CN101604601B - Quick trip breaker with function of pneumatic actuation trip - Google Patents
Quick trip breaker with function of pneumatic actuation trip Download PDFInfo
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- CN101604601B CN101604601B CN200910143586A CN200910143586A CN101604601B CN 101604601 B CN101604601 B CN 101604601B CN 200910143586 A CN200910143586 A CN 200910143586A CN 200910143586 A CN200910143586 A CN 200910143586A CN 101604601 B CN101604601 B CN 101604601B
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- trip
- support ledge
- breaking units
- pole breaking
- contact
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H2077/025—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with pneumatic means, e.g. by arc pressure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
- H01H71/0235—Contacts and the arc extinguishing space inside individual separate cases, which are positioned inside the housing of the circuit breaker
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
- H01H77/102—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement
Abstract
The invention relates to a quick trip breaker with the function of pneumatic actuation trip, which comprises a plurality of single-stage breaking units and an operation mechanism with a shared trip rod, wherein each of the single-stage breaking units comprises a shell, a contact device, an arc control device, a wiring device, an over-current trip device and a pneumatic trip device consisting of actuation mechanisms and transmission mechanisms. One single-stage breaking unit is provided with one or two sets of transmission mechanisms in coupled connection with the actuation mechanisms of the single-stage breaking unit, so the transmission mechanisms can be shared by two adjacent breaking units, and the trip action of the actuation mechanisms of the two adjacent breaking units can be transmitted to the shared trip rod of the operation mechanism through a contact arm. One single-stage breaking unit is provided with one or two sets of actuation mechanisms which can transmit the trip action of the stage breaking unit to the transmission mechanism on the connection side synchronously. The breaker has the function of quick trip, and can improve breaking capacity to the maximum, simplify assembly, make the action more reliable, and provide convenience for on-site maintenance.
Description
Technical field
The present invention relates to a kind of quick trip breaker, the improved circuit breaker that particularly a kind of gases at high pressure energy realization rapid-releasing that forms by means of contact disjunction short circuit current trips with function of pneumatic actuation trip.
Background technology
Transformation along with development of electric power industry and urban and rural power grids; Development in the intelligent building in city, rural urbanization construction, industrial automation control etc.; All higher specification requirement has been proposed China's circuit breaker; The direction that China's circuit breaker forward " miniaturization, modularization, multi-functional, accessory moduleization, high breaking, low noise, reliable operation, progressively realize intelligent " requires develops, and wherein the most basic is the reliability that will improve circuit breaker.Consider that there be improving not to the utmost of existing design kind, specification and aspect of performance in China's circuit breaker and apply the present situation of using; The user is in the practical engineering application of using multiple low-voltage electrical apparatus; Unavoidable some irrational deviations that exist; For this reason, more require the circuit breaker product working hard aspect the reliability of improvement own during fabrication.
The action of contact of breaker closed and disconnected was accomplished by electric the cooperation with mechanical mechanism, and in mechanical mechanism, free tripping mechanism is the key of getting in touch between realization transmission mechanism and the contact system.During the free tripping mechanism snap close, transmission mechanism can drive contact system and move together under the effect of release external force, makes dynamic/static contact closed.When tripping operation, external force collision trip shaft makes it turn over an angle, and snap close is untied, and transmission mechanism and contact system break away from, and dynamic/static contact separates disconnection under main force's spring action.As everyone knows; In power and distribution supply cable; The one pole of prior art or multipole circuit breaker all have certain protection, and overcurrent trip trip gear for example, its trip gear that adopts mainly contain as the electromagnetic tripping apparatus of the short-circuit protection of circuit with as the thermal release device of overload protection.The circuit breaker overload or short-circuit protection is normally carried out through a release; But under some special operating conditions; Especially when short circuit current is very big; Use traditional dropout mode to utilize the spring operating mechanism of circuit breaker to come breaking-off contact, this method overlong time, people have begun to realize by the mode that the gases at high pressure energy of contact disjunction short circuit current formation is threaded off the performance requirement of circuit breaker rapid-releasing tripping operation at present.
The patent No. is that the patent of invention of ZL92111503.2 discloses a kind of circuit breaker that utilizes overvoltage actuation trip principle rapid-releasing; Utilize air chamber to collect the gases at high pressure that contact disjunction short circuit current forms; Promote piston and drive bar to hit snap close; Four connecting rods of circuit breaker operation mechanism are disintegrated, reach the purpose of the quick disjunction of circuit breaker.It is characterized in that: between two one pole trippers, be provided with separator; On separator, be provided with pressure actuator; Pressure actuator comprises the piston in cavity, cylinder and the cylinder.The separator of this prior art and the structure of actuating device are very complicated with design, are not easy to make and assembling.
The patent No. is that the patent of invention of ZL03145501.8 discloses a kind of circuit breaker that above-mentioned pneumatic actuation structure has been carried out simplification; Be prone to problem saturated and that the disjunction class is difficult to improve from the disjunction protective capability that solves prior art; It is characterized in that: on contact apparatus, be provided with the opening flange, described opening flange and the spatial communication that produces storing high pressure gas; Corresponding position at base is provided with rotating shaft; Described rotating shaft has the stressed member that disposes relatively with said opening flange, and stressed member is accepted the pressure gas stream of crossing from the opening flange effusion of contact apparatus, and transmits revolving force through rotating shaft; Go to drive the touch part action, make the quick disjunction of circuit breaker.The solution that this patent proposes has solved the problem of rapid-releasing well, and makes structure obtain further optimization, but also has the drawback on assembling and the property made.
Circuit breaker is divided into single-pole circuit breaker or multipole circuit breaker according to the type of power equipment or the needs of power distribution circuit, and multipole circuit breaker is divided into plurality of specifications such as two utmost points open circuit, three-pole breaker, four-pole circuit breaker.Technical development along with the versatility problem of the parts between the circuit breaker that solves different numbers of poles; People can become a multipole circuit breaker with a plurality of standard one pole breaking units composite assemblies; But multipole circuit breaker is before dispatching from the factory, to have assembled completion at present, and people hope that being assemblied with of circuit breaker is beneficial to on-the-spot maintenance.But; The air pressure tripping mechanism of above-mentioned two kinds of prior aries can not be applicable in the on-the-spot maintenance that realizes circuit breaker of the use of circuit breaker; Patent of invention with ZL03145501.8 is an example; The rotating shaft of the transmission tripping force of its trip gear is arranged on the base, and the stressed member in this rotating shaft and the flange on the contact apparatus disposes relatively, the touch part in the said rotating shaft and the snap close of operating system dispose relatively, and the action of touch part touches locker makes circuit breaker tripping.The installing mechanism of this relative configuration requires part to have very high precision; And require in the production debug process of multipole circuit breaker, to accomplish; In case this debugging is accomplished; Just do not allow dismounting, otherwise can be because of the change of the flange on the contact apparatus and the rigging position between the stressed member in the rotating shaft, and possibly cause that the dropout of said rotating shaft moves malfunctioning.Though adopting air pressure dropout mode is to improve the breaking capacity of circuit breaker and the effective means of tripping operation speed; Yet; When making the dropout trip system aggregate erection of circuit breaker of prior art; Can satisfy the synchronous disjunction/closure of a plurality of one pole breaking units, can satisfy again a plurality of one pole breaking units collaborative work the very high assembly reliability requirement that must satisfy, must carry out design improvement to existing mechanism.
Summary of the invention
The objective of the invention is to overcome the defective of prior art; A kind of quick trip breaker of optimizing function of pneumatic actuation trip is provided; Have the reliability height, be easy to manufacturing and assembling, simple in structure, advantage such as trip speed is fast; And its air pressure tripping mechanism can be applicable to the assembly unit requirement of multipole circuit breaker.
To achieve these goals, the present invention has adopted following technical scheme.
A kind of quick trip breaker with function of pneumatic actuation trip, it comprises: carry out the operating mechanism 1 of on/off tasks, a base and a lid through at least one standard one pole breaking units 36 of a shared release lever 17 controls for one; The number of said one pole breaking units 36 equals the number of poles of circuit breaker; Described each one pole breaking units 36 comprises housing 35, contact apparatus 45, arc-control device 25, first termination, second termination 55 and the electromagnetic tripping apparatus.Described contact apparatus 45 comprises that one is with double-break bridge-type moving contact 32, first fixed contact 190 and second fixed contact 230; Said moving contact 32 is installed in contact and supports on 33; Contact support 33 directly is of coupled connections with operating mechanism 1, and first fixed contact 190 is connected with first termination, second termination 55 respectively with second fixed contact 230.Described arc-control device 25 comprises by what said housing 35 formed and is positioned near the arc control device 20 and the arc-chute 24 that is installed in arc control device 20 the contact apparatus 45.
Described one pole breaking units 36 also comprises the pneumatic trip gear that is made up of actuating mechanism 2 and transmission mechanism 3.Described actuating mechanism 2 is arranged on the said one pole breaking units 36, it comprise be arranged on inner chambers 201 in the housing 35 and that communicate with said arc control device 20, be complementary with said inner chamber 201 and can be along the piston 16 of the axial-movement of inner chamber 201.Described transmission mechanism 3 is arranged on the said one pole breaking units 36; It comprises first support ledge 29, second support ledge 27, drive link 10 and back-moving spring 18, and said drive link 10 is installed on described first support ledge 29 and second support ledge 27 pivotally.The bottom of described drive link 10 is provided with first drive mechanism 15 and second drive mechanism 14; Wherein first drive mechanism 15 is of coupled connections with the piston 16 of the actuating mechanism 2 of described one pole breaking units 36, and second drive mechanism 14 is used to provide the piston of the actuating mechanism on another the adjacent one pole breaking units with said circuit breaker to be of coupled connections.The top of described drive link 10 is provided with the contact arm 11 that a shared release lever 17 with operating mechanism 1 is of coupled connections; When circuit breaker received heavy current impact, moving contact 32 received the effect of electrodynamic repulsion force, simultaneously with first fixed contact 190, second fixed contact 230 is scolded out and produce huge energy; Space internal gas pressure with arc control device 20 is raise rapidly; These gases at high pressure promote piston 16, make first drive mechanism 15 and/or second drive mechanism 14 rotational around drive link 10, drive contact arm 11 simultaneously and rotate; Touch said shared release lever 17 and produce the action of threading off, trigger action mechanism 1 each one pole breaking units of control circuit breaker is realized the disjunction tripping operation simultaneously.
Described drive link 10 is integrally formed by the body of rod 13, first axle journal 131, second axle journal 132, first drive mechanism 15, second drive mechanism 14, contact arm 11; Perhaps, described drive link 10 is pressed the various combination split and is shaped by the body of rod 13, first axle journal 131, second axle journal 132, first drive mechanism 15, second drive mechanism 14, contact arm 11.The diameter of described first axle journal 131 and second axle journal 132 is all less than the diameter of the said body of rod 13 so that the body of rod 13 respectively and first axle journal 131, second axle journal 132 between the joint portion form two shaft shoulders; Dead eye on first support ledge 29 on described first axle journal 131 and the one pole breaking units 36 pivots and cooperates installation, and the dead eye pivot on second support ledge 27 on second axle journal 132 and the one pole breaking units 36 cooperates installation; The end face of described two shaft shoulders respectively with described first support ledge 29 on the end face, the end face of dead eye on second support ledge 27 of dead eye be slidingly matched, with the axial motion of constraint drive link 10.
Described first support ledge 29 and second support ledge 27 are arranged on the sidewall of housing 35 of described one pole breaking units 36; Described sidewall is near a side of adjacent one pole breaking units, can be coupled with the actuating mechanism on the adjacent one pole breaking units and is connected so that be installed in second drive mechanism 14 on the drive link 10 on first support ledge 29 and second support ledge 27.Described first drive mechanism 15 and second drive mechanism 14 are respectively the block-shaped protrusion of diameter less than the diameter of said piston 16, and the end face of described block-shaped protrusion is a sphere.
One end of described back-moving spring 18 is connected with drive link 10, and the other end is connected with the housing 35 of one pole breaking units 36; The direction of shared release lever 17 that the elastic force action direction of described back-moving spring 18 and contact arm 11 on the drive link 10 leave described operating mechanism 1 is consistent.Described back-moving spring 18 is a kind of in torsion spring, extension spring or the stage clip.
The lateral surface of described second support ledge 27 be provided with second support ledge 27 on the groove 271 that connects of dead eye; Its width is less than the diameter of second axle journal 132 on the drive link 10; The time can produce strain and expand and broaden when said groove 271 receives the external force expansion, so that described second axle journal 132 can be through pack into dead eye or from dead eye, unload of groove 271.
The housing 35 of described first support ledge 29, second support ledge 27 and one pole breaking units 36 is integrally formed; Or in described first support ledge 29 or second support ledge 27 one integrally formed with described housing 35, and another is the independent component that is fixed on the said housing 35.The housing 35 of perhaps described first support ledge 29, second support ledge 27, one pole breaking units 36 is the independent component of three splits, and first support ledge 29 and second support ledge 27 are fixed on respectively on the described housing 35.The described mode that installs and fixes be bonding, riveted joint, screw connect or clamping in a kind of.
On the sidewall of the housing 35 of described one pole breaking units 36, be provided with a cover actuating mechanism 2; Or on two sidewalls of the housing 35 of described one pole breaking units 36, be equiped with two cover actuating mechanisms 2 symmetrically.
Description of drawings
Fig. 1 is a partial schematic diagram with quick trip breaker embodiment of function of pneumatic actuation trip of the present invention.
Fig. 2 is the A-A cutaway view of Fig. 1 embodiment.
Fig. 3 is the sketch map of the drive link part of the quick trip breaker with function of pneumatic actuation trip of the present invention.
Fig. 4 is the sketch map of the pneumatic actuation mechanism of the quick trip breaker with function of pneumatic actuation trip of the present invention.
Embodiment
Specify the embodiment with quick trip breaker of function of pneumatic actuation trip of the present invention below in conjunction with accompanying drawing 1-4.Circuit breaker of the present invention is not limited to the specific descriptions of following examples.
Embodiment with quick trip breaker of function of pneumatic actuation trip of the present invention as shown in Figure 1 is a three-pole breaker that is combined by three standard one pole breaking units 36.Obviously, the number of described one pole breaking units 36 can be by the number of poles requirement apolegamy combination of user to circuit breaker.Circuit breaker of the present invention comprises operating mechanism 1, base (not shown) and lid (not shown); Described operating mechanism 1, base and lid can be supported the one pole breaking units 36 of the different numbers of apolegamy assembling within the specific limits, dress up a utmost point circuit breaker or two utmost point circuit breakers or three-pole breaker (Fig. 1) or four-pole circuit breaker like optional combo.
The operating mechanism 1 of circuit breaker of the present invention is the common component that a plurality of one pole breaking units 36 of control are carried out the on/off task synchronously.The so-called on/off task of carrying out is meant the input of execution one pole breaking units 36 and the on/off task of the main circuit between the output.Shown in Fig. 1 or 2; Described one pole breaking units 36 is standard separate units, and it comprises housing 35, arc-control device 25, contact apparatus 45, overcurrent release device (not shown), the first termination (not shown) and second termination 55.Described contact apparatus 45 comprises a bridge-type moving contact with first moving contact 21 and second moving contact 22 32, first fixed contact 190, second fixed contact 230.First moving contact 21 and second moving contact 22 are arranged on the two ends of said moving contact 32 symmetrically; Said moving contact 32 is installed in contact and supports on 33; Contact support 33 directly is of coupled connections with operating mechanism 1, so that moving contact 32 is made disjunction/closed action under the control of operating mechanism 1.On first fixed contact 190, be provided with first fixed contact 19; On second fixed contact 230, be provided with second fixed contact 23; When moving contact 32 is done disjunction/closed action, described first moving contact 21 and second moving contact 22 respectively with described first fixed contact 19 and second fixed contact 23 disjunction/closure synchronously.First fixed contact 190 is connected with second termination 55 with the first termination (not shown) respectively with second fixed contact 230.Common contact apparatus 45 can be set to one or more according to the needs of user's one utmost point or multipole circuit breaker, and Fig. 1 is a three-pole breaker.Described arc-control device 25 is separately positioned near the contact, comprises housing 35 arc control device 20 that form and the arc-chute 24 that is installed in the arc control device 20 by one pole breaking units 36.
Pneumatic trip gear of the present invention is like Fig. 1, shown in 2 and 4, and described one pole breaking units 36 also comprises the pneumatic trip gear that is made up of actuating mechanism 2 and transmission mechanism 3.Described actuating mechanism 2 comprise in the housing 35 that is arranged on said one pole breaking units 36 and the inner chamber 201 that communicates with said arc control device 20 and be complementary with said inner chamber 201 and can be along the piston 16 of the axial-movement of inner chamber 201.Described transmission mechanism 3 comprises first support ledge 29 that is formed on the said one pole breaking units 36, be formed on second support ledge 27, drive link 10 and back-moving spring 18 on the said one pole breaking units 36.Described drive link 10 is installed on described first support ledge 29 and second support ledge 27 pivotally.
Further specify below circuit breaker of the present invention pressure actuator transmission mechanism structure and with mechanism's annexation of actuating mechanism.Shown in Fig. 1 to 4, drive link 10 is a rod-shaped elements, and described drive link 10 is by the described body of rod 13, first axle journal 131, second axle journal 132, first drive mechanism 15, second drive mechanism 14 and contact arm 11 integrally formed forming.Specifically; Interlude at drive link 10 is the body of rod 13; Body of rod two ends are first axle journal 131 and second axle journal 132, are provided with first drive mechanism 15 and second drive mechanism 14 in the bottom of the said body of rod 13, are provided with contact arm 11 and spring eye 12 on the top of second axle journal 132.First drive mechanism 15 of described drive link 10 bottoms is of coupled connections with the piston 16 of the actuating mechanism 2 of described one pole breaking units 36, and described second drive mechanism 14 is used for providing the piston with the actuating mechanism of another adjacent one pole breaking units of circuit breaker to be of coupled connections.
As stated, a preferred scheme of the present invention is like Fig. 1,3, shown in 4, and described drive link 10 is integrally formed by the body of rod 13, first axle journal 131, second axle journal 132, first drive mechanism 15, second drive mechanism 14, contact arm 11.Another program of alternative described preferred version is: described drive link 10 is pressed the various combination split and is formed by the body of rod 13, first axle journal 131, second axle journal 132, first drive mechanism 15, second drive mechanism 14, contact arm 11; For example: contact arm 11 is shaped with the body of rod 13 splits shaping, first drive mechanism 15 and/or 14 splits of second drive mechanism, and then the element that split is shaped is fixedly connected.Obviously, the scheme of integrally formed preferred version score body formation has advantage of simple structure.
The diameter of described first axle journal 131 and second axle journal 132 is less than the diameter of the said body of rod 13; Thereby the joint portion in the joint portion between first axle journal 131 and the body of rod 13, between second axle journal 132 and the body of rod 13 forms a shaft shoulder respectively; The end face of two shaft shoulders respectively with described first support ledge 29, second support ledge 27 on the end face of dead eye be slidingly matched, with the axial motion of constraint drive link 10.Dead eye on first support ledge 29 on described first axle journal 131 and the one pole breaking units 36 pivots and cooperates installation; Dead eye on second support ledge 27 on described second axle journal 132 and the one pole breaking units 36 pivots and cooperates installation; With the radial motion of constraint drive link 10, the drive link 10 after constraint is installed on first support ledge 29 and second support ledge 27 thus rotates only.Described first support ledge 29 and second support ledge 27 are formed on the same sidewall of housing 35 of described one pole breaking units 36; Described sidewall is the sidewall near a side of adjacent one pole breaking units, thereby has guaranteed that second drive mechanism 14 on the drive link 10 can realize being of coupled connections with the actuating mechanism on the adjacent one pole breaking units.
On the lateral surface of described second support ledge 27, be provided with groove 271.Dead eye on the groove 271 and second support ledge 27 connects fully, and the width of groove 271 can not freely be deviate from described dead eye to guarantee second axle journal 132 less than the diameter of second axle journal 132 on the drive link 10.The width of said groove 271 is meant the width in the radial direction of the dead eye of groove 271 on second support ledge 27; When groove 271 receives the external force of broad ways expansion; Described width can produce strain and expand and broaden, and second axle journal 132 that is beneficial on the said drive link 10 can be through pack into dead eye or from dead eye, unload of groove 271.The method of the described expansion external force of a kind of preferred generation is: when drive link 10 is installed, pushes described second axle journal 132 and get in the groove 271, broaden until groove 271 compressive deformations, and make second axle journal 132 get into dead eye; When unloading drive link 10, described second strength 132 is pulled outwardly from described groove 271, broaden until groove 271 compressive deformations, and second axle journal 132 is deviate from from groove 271.
One end of described back-moving spring 18 is connected with spring eye 12 on the drive link 10; Mounting groove 26 on the housing 35 of the other end and one pole breaking units 36 is connected; The direction of the shared release lever 17 of the contact arm 11 leave operation mechanisms 1 on the elastic force action direction of back-moving spring 18 and the drive link 10 is consistent; So the shared release lever 17 that touches operating mechanisms 1 at the contact arm of described drive link 10 11 makes in the process of circuit breaker trip; The elastic force that described back-moving spring 18 storage power, the power that makes 2 of described actuating mechanisms pass to drive link 10 need overcome back-moving spring 18 could trigger the circuit breaker tripping tripping operation; Air pressure in actuating mechanism 2 returns to just often; The elastic force of back-moving spring 18 can be ordered about the piston 16 of drive link 10 and actuating mechanism automatically and got back to initial position; The elastic force of back-moving spring 18 can make actuating mechanism 2 and transmission mechanism 3 return to initial condition in other words, i.e. state before the circuit breaker trip.The back-moving spring 18 of the embodiment that Fig. 1 provides is torsion springs, the imagination of being not difficult, and back-moving spring 18 can also be a kind of in extension spring or the stage clip.
Shown in Fig. 3 and 4, first drive mechanism 15 on the drive link 10 and second drive mechanism 14 be shaped as block-shaped protrusion.The diameter of said block-shaped protrusion should be less than the diameter of piston 16, to guarantee that block-shaped protrusion can stretch into inner chamber 201 and be of coupled connections with said piston 16.The end face of said block-shaped protrusion is a sphere, to guarantee that in drive link 10 rotating process the end face of block-shaped protrusion remains steadily with the contacting of end face of piston 16.
Embodiment shown in Figure 1; On two sidewalls of the housing 35 of described one pole breaking units 36, be respectively equipped with two sets of transmission mechanism 3; Promptly two first support ledge 29 are respectively formed on two sidewalls of housing 35 of one pole breaking units 36; Two second support ledge 27 are respectively formed on two sidewalls of housing 35 of one pole breaking units 36; Make on two sidewalls of one pole breaking units 36 and can be equipped with two transmission mechanisms 3 symmetrically, the advantage of the structure of this symmetric arrangement is to simplify assembly process, makes each stressed unanimity in the stressed member left and right sides.Another alternative scheme is only to establish a sets of transmission mechanism on the one pole breaking units 36; Promptly one first support ledge 29 and one second support ledge 27 are formed on the sidewall of housing 35 of said one pole breaking units 36; Its advantage is the unitized production of being convenient to one pole breaking units 36; That is to say that a multipole circuit breaker only needs a kind of identical standard one pole breaking units 36 just can satisfy the requirement of composite assembly.
Fig. 1 and 4 provides a preferred embodiment; Its first support ledge 29 and second support ledge 27 all are formed on the sidewall of shell 35 of one pole breaking units 36; Promptly first support ledge 29 and second support ledge 27 are integrally formed with the shell 35 of one pole breaking units 36; Its advantage is simple in structure, installs easily, is convenient to manufacture.Certainly alternative scheme is: described first support ledge 29 and/or second support ledge 27 are fixed on the form of independent component on the sidewall of shell 35 of one pole breaking units 36; That its form that installs and fixes can adopt is bonding, riveted joint, screw connects or clamping in a kind of, its advantage is can unload at any time to hang empty first support ledge 29 and/or second support ledge 27.
Embodiment shown in Figure 1, its one pole breaking units 36 are provided with two cover actuating mechanisms 2.Obviously, that cover actuating mechanism in the outside of one pole breaking units 36 that is in the avris of multipole circuit breaker is to hang empty (promptly not using).The unitized production that this is convenient to one pole breaking units 36 that is to say, a multipole circuit breaker only needs a kind of identical standard one pole breaking units 36 just can satisfy the composite assembly requirement.Obviously; Another alternative scheme is; Only establish a cover actuating mechanism 2 on the one pole breaking units 36; Its advantage is can overcome in the one pole breaking units of the avris of multipole circuit breaker outermost actuating mechanism to hang empty problem, but its actuating mechanism 2 or be arranged on the left side of one pole breaking units 36, or is arranged on open circuit 36 right side of one pole.
The present invention selectively makes up adjacent one pole breaking units 36, and when selecting combination that adjacent one pole breaking units is arranged, described second drive mechanism 14 is of coupled connections with the piston of described adjacent one pole breaking units; When selecting not with adjacent one pole breaking units assembly unit, described second drive mechanism 14 is hung empty, promptly do not take place and other parts between be of coupled connections.Transmission mechanism 3 is arranged on the one pole breaking units 36 with second drive mechanism 14 being used to provide be coupled with the piston of adjacent one pole breaking units is connected, make that selectively being assembled into required multipole circuit breaker by a plurality of one pole breaking units becomes possibility.The contact arm 11 on the top of described drive link 10 is of coupled connections with the shared release lever 17 of operating mechanism 1.When one pole breaking units 36 and/or adjacent one pole breaking units receive heavy current impact; Moving contact 32 receives the effect of electrodynamic repulsion force; Simultaneously with first fixed contact 190, second fixed contact 230 is scolded out and produce huge energy, wherein most ofly absorbed, and discharge a large amount of gas by arc control device 20; This gas raises the space internal gas pressure with arc control device 20 rapidly; These gases at high pressure promote piston 16, make first drive mechanism 15 and/or second drive mechanism 14 rotational around drive link 10, drive the body of rod 13 simultaneously and rotate with contact arm 11; The rotation of contact arm 11 touches shared release lever 17 and produces the action of threading off, thereby trigger action mechanism 1 sends the dropout action and controls each one pole breaking units and realize the disjunction tripping operation simultaneously.Such disconnection principle often is shorter than the time of being threaded off by electromagnetic tripping apparatus, can improve the breaking capacity of circuit breaker to greatest extent.The present invention has solved the background technology patent well must be according to the trouble of the actual installation position debugging of contact apparatus when rotating shaft is installed; Not only make two stressed members in the rotating shaft can guarantee simultaneously with two contact apparatus on sensing part be of coupled connections well; And the number of poles of circuit breaker can be selected assembly unit without restriction by the isolation needs that the user safeguarded, tested and overhauled its using electricity system.This shows that circuit breaker of the present invention is compared with traditional circuit breaker that can not make up, and has not only simplified assembling, makes action more reliable, and can obviously practice thrift manufacturing cost, circulation sale cost and the customer using cost of product.
Claims (10)
1. quick trip breaker with function of pneumatic actuation trip, it comprises:
Operating mechanism (1), a base and a lid of controlling at least one one pole breaking units (36) execution on/off task through a shared release lever (17);
The number of said one pole breaking units (36) equals the number of poles of circuit breaker;
Described each one pole breaking units (36) comprises housing (35), contact apparatus (45), arc-control device (25), first termination, second termination (55) and electromagnetic tripping apparatus;
Described contact apparatus (45) comprises that one is with double-break bridge-type moving contact (32), first fixed contact (190) and second fixed contact (230); Said bridge-type moving contact (32) is installed in the contact support (33); Contact supports (33) and operating mechanism (1) directly to be of coupled connections, and first fixed contact (190) is connected with first termination, second termination (55) respectively with second fixed contact (230);
Described arc-control device (25) comprises by what said housing (35) formed and is positioned near the arc control device (20) the contact apparatus (45) and is installed in the arc-chute (24) of arc control device (20);
It is characterized in that:
Described one pole breaking units (36) also comprises the pneumatic trip gear that is made up of actuating mechanism (2) and transmission mechanism (3);
Described actuating mechanism (2) is arranged on the said one pole breaking units (36), it comprise be arranged on inner chamber (201) in the housing (35) and that communicate with said arc control device (20), be complementary with said inner chamber (201) and can be along the piston (16) of the axial-movement of inner chamber (201);
Described transmission mechanism (3) is arranged on the said one pole breaking units (36); It comprises first support ledge (29), second support ledge (27), drive link (10) and back-moving spring (18), and said drive link (10) is installed on described first support ledge (29) and second support ledge (27) pivotally;
The bottom of described drive link (10) is provided with first drive mechanism (15) and second drive mechanism (14); Wherein the piston (16) of the actuating mechanism (2) of first drive mechanism (15) and described one pole breaking units (36) is of coupled connections, and second drive mechanism (14) is used to provide the piston of the actuating mechanism on another the adjacent one pole breaking units with said circuit breaker to be of coupled connections;
The top of described drive link (10) is provided with the contact arm (11) that a shared release lever (17) with operating mechanism (1) is of coupled connections; When circuit breaker receives heavy current impact; Bridge-type moving contact (32) receives the effect of electrodynamic repulsion force; Scold out with first fixed contact (190), second fixed contact (230) simultaneously and produce huge energy, make to have arc control device the space internal gas pressure of (20) raises rapidly, gases at high pressure promote piston (16); Make first drive mechanism (15) and/or second drive mechanism (14) rotational around drive link (10); Drive contact arm (11) simultaneously and rotate, touch said shared release lever (17) and produce the action of threading off, trigger action mechanism (1) each one pole breaking units of control circuit breaker is realized the disjunction tripping operation simultaneously.
2. the quick trip breaker with function of pneumatic actuation trip according to claim 1 is characterized in that:
Described drive link (10) is integrally formed by the body of rod (13), first axle journal (131), second axle journal (132), first drive mechanism (15), second drive mechanism (14), contact arm (11);
The diameter of described first axle journal (131) and second axle journal (132) is all less than the diameter of the said body of rod (13) so that the body of rod (13) respectively and first axle journal (131), second axle journal (132) between the joint portion form two shaft shoulders;
Dead eye on first support ledge (29) on described first axle journal (131) and the one pole breaking units (36) pivots and cooperates installation, and the dead eye pivot on second support ledge (27) on second axle journal (132) and the one pole breaking units (36) cooperates installation;
The end face of described two shaft shoulders respectively with described first support ledge (29) on the end face, the end face of dead eye on second support ledge (27) of dead eye be slidingly matched, with the axial motion of constraint drive link (10).
3. the quick trip breaker with function of pneumatic actuation trip according to claim 1 is characterized in that:
Described drive link (10) is pressed the various combination split by the body of rod (13), first axle journal (131), second axle journal (132), first drive mechanism (15), second drive mechanism (14), contact arm (11) and is shaped.
4. the quick trip breaker with function of pneumatic actuation trip according to claim 1 is characterized in that
Described first support ledge (29) and second support ledge (27) are arranged on the sidewall of housing (35) of described one pole breaking units (36);
Described sidewall is near a side of adjacent one pole breaking units, can be coupled with the actuating mechanism on the adjacent one pole breaking units and is connected so that be installed in second drive mechanism (14) on the drive link (10) on first support ledge (29) and second support ledge (27).
5. the quick trip breaker with function of pneumatic actuation trip according to claim 1 is characterized in that:
One end of described back-moving spring (18) is connected with drive link (10), and the other end is connected with the housing (35) of one pole breaking units (36);
The direction of shared release lever (17) that the elastic force action direction of described back-moving spring (18) and contact arm (11) on the drive link (10) leave described operating mechanism (1) is consistent;
Described back-moving spring (18) is a kind of in torsion spring, extension spring or the stage clip.
6. according to claim 1,2 or 4 described quick trip breakers, it is characterized in that with function of pneumatic actuation trip:
The lateral surface of described second support ledge (27) is provided with groove (271);
Dead eye on described groove (271) and second support ledge (27) connects;
The width of said groove (271) is less than the diameter of second axle journal (132) on the drive link (10);
The time can produce strain and expand and broaden when said groove (271) receives the external force expansion, so that described second axle journal (132) can be through groove (271) pack into dead eye or from dead eye, unload.
7. according to claim 1 or 4 described quick trip breakers with function of pneumatic actuation trip, it is characterized in that: the housing (35) of described first support ledge (29), second support ledge (27) and one pole breaking units (36) is integrally formed; Or in described first support ledge (29) or second support ledge (27) one integrally formed with described housing (35); And another is for being fixed on the independent component on the said housing (35), the described mode that installs and fixes is bonding, riveted joint, screw connects or clamping in a kind of.
8. according to the quick trip breaker described in claim 1 or 4, it is characterized in that with function of pneumatic actuation trip:
The housing (35) of described first support ledge (29), second support ledge (27), one pole breaking units (36) is the independent component of three splits; First support ledge (29) and second support ledge (27) are fixed on respectively on the described housing (35), the described mode that installs and fixes be bonding, riveted joint, screw connect or clamping in a kind of.
9. the quick trip breaker with function of pneumatic actuation trip according to claim 1 is characterized in that: on the sidewall of the housing (35) of described one pole breaking units (36), be provided with a cover actuating mechanism (2); Or on two sidewalls of the housing (35) of described one pole breaking units (36), be equiped with two cover actuating mechanisms (2) symmetrically.
10. the quick trip breaker with function of pneumatic actuation trip according to claim 1; It is characterized in that: described first drive mechanism (15) and second drive mechanism (14) are respectively the block-shaped protrusion of diameter less than the diameter of said piston (16), and the end face of described block-shaped protrusion is a sphere.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910143586A CN101604601B (en) | 2009-06-05 | 2009-06-05 | Quick trip breaker with function of pneumatic actuation trip |
| PCT/CN2010/000707 WO2010139186A1 (en) | 2009-06-05 | 2010-05-19 | Quick trip breaker with function of pneumatic actuation trip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910143586A CN101604601B (en) | 2009-06-05 | 2009-06-05 | Quick trip breaker with function of pneumatic actuation trip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101604601A CN101604601A (en) | 2009-12-16 |
| CN101604601B true CN101604601B (en) | 2012-10-03 |
Family
ID=41470280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910143586A Active CN101604601B (en) | 2009-06-05 | 2009-06-05 | Quick trip breaker with function of pneumatic actuation trip |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101604601B (en) |
| WO (1) | WO2010139186A1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101604601B (en) * | 2009-06-05 | 2012-10-03 | 上海诺雅克电气有限公司 | Quick trip breaker with function of pneumatic actuation trip |
| US8471657B1 (en) * | 2011-12-06 | 2013-06-25 | Eaton Corporation | Trip mechanism and electrical switching apparatus including a trip member pushed by pressure arising from an arc in an arc chamber |
| CN103094014B (en) * | 2013-01-21 | 2015-07-01 | 贵州长征开关制造有限公司 | Pneumatic and electromagnet integrated protection device used for circuit breaker |
| JP6253317B2 (en) * | 2013-09-05 | 2017-12-27 | 三菱電機株式会社 | Circuit breaker |
| CN104134589B (en) * | 2014-07-17 | 2016-01-20 | 正泰集团股份有限公司 | A kind of low-voltage circuit breaker with residual current trip gear |
| CN105118747B (en) * | 2015-09-24 | 2018-06-08 | 厦门宏发开关设备有限公司 | A kind of drop-away reset device of breaker |
| CN108072802A (en) * | 2016-11-18 | 2018-05-25 | 浙江正泰电器股份有限公司 | Has double-break leak(age) test circuit |
| CN111226301B (en) * | 2017-10-20 | 2022-07-19 | 三菱电机株式会社 | Circuit breaker |
| US10236145B1 (en) * | 2017-11-22 | 2019-03-19 | Carling Technologies, Inc. | High voltage DC circuit breaker with double break contacts |
| CN108288570B (en) * | 2017-12-22 | 2024-02-13 | 上海诺雅克电气有限公司 | Tripping device of circuit breaker |
| US10504668B1 (en) * | 2018-08-06 | 2019-12-10 | Carling Technologies, Inc. | Circuit breaker with snap action contacts |
| CN109950103B (en) * | 2019-04-28 | 2023-10-31 | 乐清市赛翔电气有限公司 | Circuit breaker operating mechanism and circuit breaker |
| CN113963978B (en) * | 2020-07-20 | 2023-01-10 | 上海良信电器股份有限公司 | Rotary switch |
| CN114792613B (en) * | 2022-03-30 | 2023-07-25 | 中群电气有限公司 | Overload quick recovery circuit breaker |
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| US3631369A (en) * | 1970-04-27 | 1971-12-28 | Ite Imperial Corp | Blowoff means for circuit breaker latch |
| US5103198A (en) * | 1990-05-04 | 1992-04-07 | Merlin Gerin | Instantaneous trip device of a circuit breaker |
| CN1071784A (en) * | 1991-10-15 | 1993-05-05 | 梅兰日兰公司 | Range of molded case low voltage circuit breakers |
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| US4521756A (en) * | 1983-12-08 | 1985-06-04 | Eaton Corporation | Circuit breaker having increased contact opening velocity at trip operation |
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| CN101604601B (en) * | 2009-06-05 | 2012-10-03 | 上海诺雅克电气有限公司 | Quick trip breaker with function of pneumatic actuation trip |
-
2009
- 2009-06-05 CN CN200910143586A patent/CN101604601B/en active Active
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2010
- 2010-05-19 WO PCT/CN2010/000707 patent/WO2010139186A1/en active Application Filing
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| US2967917A (en) * | 1958-04-23 | 1961-01-10 | Fed Pacific Electric Co | Circuit breakers |
| US3631369A (en) * | 1970-04-27 | 1971-12-28 | Ite Imperial Corp | Blowoff means for circuit breaker latch |
| US5103198A (en) * | 1990-05-04 | 1992-04-07 | Merlin Gerin | Instantaneous trip device of a circuit breaker |
| CN1071784A (en) * | 1991-10-15 | 1993-05-05 | 梅兰日兰公司 | Range of molded case low voltage circuit breakers |
| CN1482643A (en) * | 2002-09-12 | 2004-03-17 | 浙江正泰电器股份有限公司 | Low-voltage circuit breaker with rapid lock-jumping function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101604601A (en) | 2009-12-16 |
| WO2010139186A1 (en) | 2010-12-09 |
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Application publication date: 20091216 Assignee: ZHEJIANG CHINT ELECTRICS Co.,Ltd. Assignor: SHANGHAI NOARK ELECTRIC Co.,Ltd. Contract record no.: X2021330000593 Denomination of invention: Fast tripping circuit breaker with pneumatic actuation tripping function Granted publication date: 20121003 License type: Common License Record date: 20211025 |
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