CN100495616C - Switch device of parallel connection vacuum arc extinguishing chamber - Google Patents
Switch device of parallel connection vacuum arc extinguishing chamber Download PDFInfo
- Publication number
- CN100495616C CN100495616C CNB2006100519894A CN200610051989A CN100495616C CN 100495616 C CN100495616 C CN 100495616C CN B2006100519894 A CNB2006100519894 A CN B2006100519894A CN 200610051989 A CN200610051989 A CN 200610051989A CN 100495616 C CN100495616 C CN 100495616C
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- main contact
- contact
- moving
- arc extinguishing
- loop
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Abstract
The disclosed switch paralleled with a vacuum arc-extinguishing room comprises: a fixed and circular-tube movable contact vertical arranged in an insulation cover as the main loop, and a vacuum arc-extinguishing room as the auxiliary loop, wherein using both an arc striking Z-arm connected with a separation brake spring and an over-travel spring to drive the contacts and form assist loop electric connection. This invention has high contact and running reliability, and reduces size and cost.
Description
Technical field
The present invention relates to a kind of vacuum load switch, especially a kind of switching device of parallel connection vacuum arc extinguishing chamber.
Background technology
As cut-offfing the vacuum load switch that short circuit current is closed in load current and pass, two kinds of structures are arranged at present, a kind of is that isolation switch and vacuum interrupter tandem are installed, during use, isolation switch and vacuum interrupter all will bear dynamic and thermal stability electric current and operating current, and mechanical transmission structure is complicated, and cost is higher, and typical model has FZN25, FN16 etc.; Another kind is the parallel installation of isolation switch and vacuum interrupter, have only isolation switch to bear dynamic and thermal stability electric current and operating current this moment, and vacuum interrupter only plays the arc extinguishing effect when cut-offfing load current, it promptly is major loop with the isolation switch, vacuum interrupter is auxiliary blow-out circuit, this simple in structure, cost is lower.The domestic typical design at present of parallel structure is to add a vacuum interrupter at the Jing Zhuchutouchu of the common board-like isolating switch of rotating knife, after the promptly moving main contact of the isolation knife of this pattern is opened, shared space is very big, therefore, this switch generally is applied in outdoor location, common model has: FZW20, FZW16, FZW32, FZW58 etc., if be applied in the indoor switch cubicle, limited space system not only, and can not make the bus-bar room on switch cubicle top and the on-load switch chamber or the cable vault of bottom form independently compartment naturally, therefore, general indoor vacuum load switch all is designed to series-mode frame, makes complex structure, and cost improves, it is unreliable that the moving main contact of knife plate formula electrically contacts, and influences the normal operation of circuit.
Summary of the invention
Technical problem to be solved by this invention be to overcome the defective of prior art and provide a kind of simple in structure, cost is low, electrically contact bus-bar room and the on-load switch chamber of bottom or the switching device that the cable vault forms the parallel connection vacuum arc extinguishing chamber of individual compartment naturally that reliably can make switch cubicle top.
Technical problem of the present invention solves with following technical scheme:
A kind of switching device of parallel connection vacuum arc extinguishing chamber, it comprises insulating cover and the support that fixes, and is provided with tripping spring between described support and the striking connecting lever; Constitute moving main contact, the quiet main contact of major loop; Constitute the vacuum interrupter of subsidiary loop, indoor moving contact, the fixed contact of being provided with of vacuum extinction; It is characterized in that:
The quiet main contact of a, described formation major loop is fixed in the conductive seat, and the moving main contact of tubular interts in transition touch base and following conductive seat, vertical being installed in parallel in insulating cover of vacuum interrupter of major loop and subsidiary loop;
The combined floodgate of b, described moving main contact and quiet main contact is plug-type upper and lower straight path motion;
C, described moving main contact striking connecting lever and the connected excess of stroke spring moving contact that drives vacuum interrupter through connecting tripping spring contacts with fixed contact, makes main contact, striking connecting lever, being flexible coupling is electrically connected with moving contact, fixed contact formation subsidiary loop.
Described support is provided with the roller that inserts guiding for the upper and lower straight line of the moving main contact of described tubular.
Described quiet main contact and transition touch base are the plum blossom shape.
Compared with prior art, subsidiary loop vacuum interrupter and the quiet main contact that constitutes major loop and vertical being installed in parallel in insulating cover of moving main contact of tubular that the present invention uses arc extinguishing, when making this on-load switch join the cabinet use indoors, insulating cover can pass metal partion (metp) and install, and makes the bus-bar room on top and the on-load switch chamber (or cable vault) of bottom form independently compartment; The moving main contact of tubular forms by the plum blossom fingertip with quiet main contact and contacts the electrical contact reliability height; The movement locus of moving main contact branch, making process is upper and lower straight line plug-in type motion, is beneficial in the cabinet layout that cooperates with other vigour part, and horizontal space is little, has dwindled the switch cubicle size effectively; Adopt parallel structure, vacuum interrupter need not to bear the dynamic and thermal stability electric current, need not the special operating means that drives vacuum interrupter of a cover, makes designs simplification, and parts reduce, and can improve operational reliability again, guarantee normal operation circuit.
Description of drawings
Fig. 1 is a gate-dividing state contour structures stereogram of the present invention (having hidden insulating cover).
Fig. 2 is a gate-dividing state contour structures cutaway view of the present invention.
Fig. 3 touches state cutaway view constantly for moving main contact and striking connecting lever in the making process of the present invention rigidly connect.
Fig. 4 is for tripping spring in the making process of the present invention stretches, the indoor dynamic and static contact contact condition cutaway view of vacuum extinction.
Fig. 5 is overtravel spring confined state cutaway view in the making process of the present invention.
Fig. 6 is a "on" position structure cutaway view of the present invention.
Embodiment
In conjunction with the accompanying drawings the embodiment of the invention is described in further detail again below.
Shown in Fig. 1～2, the switching device of parallel connection vacuum arc extinguishing chamber comprises insulating cover 15 and the support 3 that is fixed on the insulating cover, is being installed in parallel major loop and subsidiary loop in insulating cover.
The vacuum interrupter 2 of subsidiary loop vertically places in the insulating cover 15, the fixed contact 10 of its quiet end is fixed on the insulating cover top equally, the moving contact 11 of moved end drives the moving contact 11 of realizing vacuum interrupters by striking connecting lever 4 with connected excess of stroke spring 14 and contacts with fixed contact 10, makes main contact 6, striking connecting lever 4, being flexible coupling 12 is electrically connected with moving contact 11, fixed contact 10 formation.And striking connecting lever 4 one ends and tripping spring 9 hook joint mutually, other end hook joint is on support 3, and it is the transmitting element that drives the power that the vacuum interrupter moving contact contacts with fixed contact, is again the conducting element by the connection moving contact that is flexible coupling.In the transmittance process of power, moving contact 11 is fixedlyed connected with guide post 13, and the striking connecting lever passes guide post again and leans against on the pin 17 of guide post, and excess of stroke spring 14 is enclosed within on the guide post 13.
Concrete structure of the present invention is further understood in description step by step below by dynamic structure:
1. when the moving main contact 6 of closing operation moved upward, as shown in Figure 3, the end is contact one striking connecting lever 4 earlier; 2. continue to move upward, the striking connecting lever overcomes the power of tripping spring 9 and drives excess of stroke spring 14 and the moved end of vacuum interrupter 2 and moving upward under the promotion of moving main contact, up to indoor dynamic and static contact 11,10 contacts of vacuum extinction, as shown in Figure 4, this moment, moving main contact formed the loop by the dynamic and static contact of vacuum interrupter and the top of insulating cover; If 3. moving main contact continues to move upward, as shown in Figure 5, excess of stroke spring 14 is compressed to the sidewall that striking connecting lever 4 slides to moving main contact 6, this compression process just stops, the purpose that roller 8 is set also is simultaneously a cross component force of passing to moving main contact for balance striking connecting lever except guide effect; 4. along with moving main contact continue move upward, insert in the quiet main contact 1 end of final moving main contact 6, and this moment, making process finished, as shown in Figure 6, electric current forms major loop through quiet main contact and moving main contact, the vacuum interrupter two ends are by short circuit, and vacuum interrupter does not bear loop current during operate as normal, because of the vacuum interrupter electric current very little, work hardly, and moving main contact sectional area is big, and resistance is little, so the main circuit conducting is by moving main contact operation.
Sub-switching operation is opposite with closing operation, moving main contact moves downward, at first moving main contact separates with quiet main contact, electric current was carried out the transition to vacuum interrupter and was kept continuous through striking connecting lever and moving main contact this moment, when the sidewall that moves to striking connecting lever and moving main contact when moving main contact leaves, the striking connecting lever moves downward under the effect of tripping spring and excess of stroke spring, what vacuum extinction was indoor moves, fixed contact separates, and form electric arc between the two, when moving, the separating distance of fixed contact reaches one regularly, arc extinction, arc extinguishing carries out at vacuum interrupter, reaches major loop not by the scaling loss purpose, moving subsequently main contact separates with the striking connecting lever, when moving main contact move downward with quiet main contact enough apart from the time, moving main contact stops, the separating brake process finishes.
Claims (3)
1, a kind of switching device of parallel connection vacuum arc extinguishing chamber, it comprises insulating cover (15) and the support (3) that fixes, and is provided with tripping spring (9) between described support (3) and the striking connecting lever (4); Constitute moving main contact (6), the quiet main contact (1) of major loop; Constitute the vacuum interrupter (2) of subsidiary loop, indoor moving contact (11), the fixed contact (10) of being provided with of vacuum extinction; It is characterized in that:
The quiet main contact (1) of a, described formation major loop is fixed in the conductive seat (16), the moving main contact (6) of tubular interts in transition touch base (5) and following conductive seat (7), vertical being installed in parallel in insulating cover (15) of vacuum interrupter (2) of major loop and subsidiary loop;
B, described moving main contact (6) are plug-type upper and lower straight path motion with the combined floodgate of quiet main contact (1);
C, described moving main contact (6) striking connecting lever (4) and connected excess of stroke spring (14) moving contact (11) that drives vacuum interrupter through connecting tripping spring (9) contacts with fixed contact (10), makes main contact (6), striking connecting lever (4), be flexible coupling (12) be electrically connected with moving contact (11), fixed contact (10) formation subsidiary loop.
2, the switching device of parallel connection vacuum arc extinguishing chamber according to claim 1 is characterized in that described support (3) is provided with the roller (8) that inserts guiding for the upper and lower straight line of the moving main contact (6) of described tubular.
3, the switching device of parallel connection vacuum arc extinguishing chamber according to claim 1 and 2 is characterized in that described quiet main contact (1) and transition touch base (5) are the plum blossom shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100519894A CN100495616C (en) | 2006-06-12 | 2006-06-12 | Switch device of parallel connection vacuum arc extinguishing chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100519894A CN100495616C (en) | 2006-06-12 | 2006-06-12 | Switch device of parallel connection vacuum arc extinguishing chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1885466A CN1885466A (en) | 2006-12-27 |
| CN100495616C true CN100495616C (en) | 2009-06-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100519894A Expired - Fee Related CN100495616C (en) | 2006-06-12 | 2006-06-12 | Switch device of parallel connection vacuum arc extinguishing chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100495616C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969006B (en) * | 2010-08-19 | 2013-12-18 | 中国电力科学研究院 | Method for improving converted current switching capability of ultra-high voltage alternating current open isolating switch |
| CN109755065B (en) * | 2017-11-03 | 2023-10-24 | 江苏明及电气股份有限公司 | Arc extinguishing mechanism for load switch |
| CN108010791B (en) * | 2017-11-30 | 2024-02-20 | 浙江紫光电器有限公司 | Breaking mechanism for quick breaking of arc extinguishing chamber |
| CN109637885A (en) * | 2018-12-19 | 2019-04-16 | 厦门顾德益电器有限公司 | A kind of switch spindle transmission device |
| CN110189954A (en) * | 2019-07-08 | 2019-08-30 | 许昌市威仕达电气有限公司 | Isolation earthing switch |
| CN111799125A (en) * | 2020-06-22 | 2020-10-20 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method for prolonging electric service life of isolating switch |
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2006
- 2006-06-12 CN CNB2006100519894A patent/CN100495616C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1885466A (en) | 2006-12-27 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20130612 |