CN103411744B - Electric eddy transducer dynamic calibration device - Google Patents
Electric eddy transducer dynamic calibration device Download PDFInfo
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- CN103411744B CN103411744B CN201310321585.2A CN201310321585A CN103411744B CN 103411744 B CN103411744 B CN 103411744B CN 201310321585 A CN201310321585 A CN 201310321585A CN 103411744 B CN103411744 B CN 103411744B
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Abstract
Electric eddy transducer dynamic calibration device, involving vibrations platform, inductive disks, standard acceler, and governor motion is installed, base and support bar; The position adjusting mechanism that governor motion comprises the installing plate for installing current vortex sensor and drives installing plate to move up and down is installed, position adjusting mechanism comprises upper bracket, undersetting, connect adjusting screw(rod) and the scale of upper bracket and undersetting, and drive adjusting screw(rod) to rotate with the knob making undersetting move up and down; Adjusting screw(rod) is parallel with scale, and scale top is fixedly connected with upper bracket, and scale is slidably connected with undersetting; Upper bracket is rotatable to be installed on support bar, and upper bracket is provided with the locking mechanism of its position of locking, and undersetting is slidably rotatable to be installed on support bar, and undersetting is provided with the latch mechanism of its position of locking, and installing plate is fixed on undersetting.The present invention has can make current vortex sensor accurately aim at test platform, the advantage that calibration accuracy is high.
Description
Technical field
The present invention relates to a kind of measurement field tests, particularly a kind of means of alignment of current vortex sensor.
Background technology
Current vortex sensor is a kind of non-cpntact measurement probe, is widely used in the overall machine vibration monitoring system of the industries such as oil, chemical industry, generating.
No. 201120564333.9, Chinese patent, discloses a kind of electric eddy transducer dynamic calibration equipment based on accelerometer check system, comprises fixed support, support bracket fastened pillar is fixed wtih upper strata disk and lower floor's disk; Upper strata disk is arranged the retaining sleeve for clamping current vortex sensor, actuating vibration table fixed by lower floor's disk, actuating vibration table is arranged normal voltage accelerometer, circular test platform is fixed on standard piezoelectric accelerometer upper end, and circular test platform is corresponding with the retaining sleeve on the disk of upper strata.The checking procedure of this calibration equipment is: the distance of adjustment current vortex sensor and test platform, make current vortex sensor be in static characteristics linear center to recheck, then actuating vibration table is started, actuating vibration table vibrates, and the acceleration signal of standard piezoelectric accelerometer pickup is exported to measuring amplifier by charge amplifier and shown after quadratic integral.Then current vortex sensor vibration monitor system display data and measuring amplifier are shown data record respectively, and finally carry out data processing.The shortcoming of this current vortex sensor calibration equipment is:
1, due to the change of DC voltage that the change of calibrated distance will cause when current vortex sensor is installed, and strict demand is had to installation DC voltage when calibrating.If calibrated distance is inaccurate, then will there is deviation in corresponding DC voltage, cause calibration accuracy low or calibrate unsuccessfully.And the calibrated distance of current vortex sensor and test platform regulates the experience relying on user completely in this calibration equipment, do not have special regulating device, make current vortex sensor corresponding with the position of test platform inaccurate, precision is low, regulates loaded down with trivial details.
2, once can only verify a current vortex sensor, the efficiency of verification is low.
Summary of the invention
In order to overcome existing current vortex sensor calibrating installation, to there is current vortex sensor corresponding with test platform inaccurate, the shortcoming that calibration accuracy is low, the invention provides one can make current vortex sensor accurately aim at test platform, the calibrating installation of the current vortex sensor that calibration accuracy is high.
Electric eddy transducer dynamic calibration device, involving vibrations platform, is fixed on the inductive disks on jigging platform moving coil, the standard acceler be fixedly connected with inductive disks, with the installation governor motion being provided with current vortex sensor, the support bar of base and connection base and installation governor motion.
It is characterized in that: described installation governor motion comprises the position adjusting mechanism that the installing plate for installing current vortex sensor moves up and down with the installing plate described in driving, described position adjusting mechanism comprises upper bracket, undersetting, connect adjusting screw(rod) and the scale of upper bracket and undersetting, and drive adjusting screw(rod) to rotate with the knob making undersetting move up and down; Adjusting screw(rod) is parallel with scale, and scale top is fixedly connected with upper bracket, and scale is slidably connected with undersetting; Upper bracket is rotatable to be installed on support bar, and upper bracket is provided with the locking mechanism of its position of locking, and undersetting is slidably rotatable to be installed on support bar, and undersetting is provided with the latch mechanism of its position of locking, and installing plate is fixed on undersetting.
Further, described installing plate is provided with the mounting hole of multiple current vortex sensor, mounting hole is uniformly distributed, there is in mounting hole the keeper of fixing current vortex sensor, installing plate to be positioned at above inductive disks and parallel with inductive disks, and all current vortex sensors are all positioned at the induction region of inductive disks.Keeper comprises the locating sleeve of fixing current vortex sensor and the trip bolt of lock in place cover position.
Further, described base comprises pedestal, support the back-up block of pedestal and make the vertical adjusting bolt of pedestal level, in pedestal, there is accommodating cavity, shaking table is positioned at accommodating cavity and has distance with accommodating cavity inwall, pedestal is evenly distributed with the horizontal adjustment bolt regulating calibrating installation position, all horizontal adjustment bolt all push against in shaking table surface.
Further, knob is the index dial fixing with adjusting screw(rod), and upper bracket is fixed with the shaft collar corresponding with index dial, and shaft collar is provided with datum line, index dial circumferentially have scale mark.Index dial and shaft collar and scale are combined into a micrometer caliper, and scale is equivalent to the fixing scale of micrometer caliper, and index dial and shaft collar are equivalent to the movable mark of micrometer caliper, thus can the position of location and installation plate accurately.
Further, latch mechanism comprises handle and clamping piece, handle is articulated with undersetting, handle is fixed with cam, clamping piece compresses to support bar by cam, spring is had, spring deformation when clamping piece is pressed in support bar by cam, spring-return deformation during cam release clamping piece between clamping piece and undersetting.
Further, clamping piece is fixed with screw, undersetting is provided with and holds the accommodating cavity of this screw, and described spring housing to be connected on screw and between screw and undersetting.
Further, the surface of contact of clamping piece and support bar is arc surface, is plane with the surface of contact of cam.
Further, inductive disks is fixed on supporting seat, and standard acceler is installed on supporting seat, and supporting seat and jigging platform moving coil are fixed by screw.
Further, upper bracket has the through hole with support bar clearance fit, upper bracket is provided with the locking mechanism of locking upper bracket and post position, locking mechanism comprises the tie down screw being arranged in upper bracket, the movable pinch part engaged with tie down screw and the fixed retaining member with tie down screw clearance fit, fixed retaining member is placed in upper bracket, and upper bracket has and allows movable pinch part along the axial translation of tie down screw and limit its locating part rotated.Movable latch gripping members and fixed retaining member are with the surface of contact of support bar the cambered surface coordinated with support bar.
Supporting seat in use, first by normal acceleration and be arranged on supporting seat lower end, then is fixed on jigging platform moving coil, then inductive disks is arranged on supporting seat by the present invention.Install before current vortex sensor, unclamp tie down screw and swing handle makes cam discharge clamping piece, support bar with governor motion clearance fit is installed.Rotating installation governor motion makes installing plate away from inductive disks region, current vortex sensor to be calibrated is put into locating sleeve, screws holding screw, and the current vortex sensor in locating sleeve is clamped.Then rotate and governor motion is installed, alignd with the center of inductive disks in the center of installing plate.Then select tie down screw, movable latch gripping members is to the direction translational near fixed retaining member, until fixed retaining member and the common clamping brace bar of movable latch gripping members, now, upper bracket and support bar are fixed.Then selection dial, index dial drives adjusting screw(rod) to rotate, and installing plate and undersetting move up or down, and reads the DC voltage that current vortex sensor exports, makes installation voltage reach setting.Then select handle, clamping piece is pressed in support bar by cam, and undersetting and support bar are fixed.Last Vibration on Start-up platform, starts to carry out dynamic calibration to current vortex sensor.
Beneficial effect of the present invention is:
1, shaft collar, index dial and scale form a micrometer caliper, and can regulate the calibrated distance between current vortex sensor and inductive disks accurately, precision is high.
2, shaking table is positioned at base, can the horizontal level of fine adjustment calibrating installation by horizontal adjustment bolt, make that inductive disks is good with the centering of installing plate, installing plate plane is parallel with inductive disks plane, ensure all current vortex sensors all in the region that inductive disks covers, ensure the precision of calibration.
3, clamping piece and support bar are that face contacts, and because clamping piece has certain length, support bar can be kept when therefore clamping piece and support bar are fitted completely uprightly not tilt, and the contact area of clamping piece and support bar is large, good stability.
4, installing plate has multiple mounting hole, once can calibrate multiple current vortex sensor, the efficiency of calibration is high.
Accompanying drawing explanation
Fig. 1 is normal axomometric drawing of the present invention.
Fig. 2 is the normal axomometric drawing of opposite side of the present invention.
Fig. 3 is front elevation of the present invention.
Fig. 4 is the schematic diagram of installing plate.
Fig. 5 is the schematic diagram installing governor motion.
Fig. 6 is the schematic diagram of clamping piece and support bar.
Fig. 7 is the schematic diagram of locking mechanism.
Fig. 8 is the schematic diagram that inductive disks is arranged on jigging platform moving coil.
Embodiment
As Figure 1-3, electric eddy transducer dynamic calibration device, involving vibrations platform 1, base, be fixed on the inductive disks 2 on shaking table 1 moving-coil, the standard acceler 3 be fixedly connected with inductive disks 2, and the installation governor motion being provided with current vortex sensor, and the support bar 4 connecting base and installation governor motion.Be fixed by screws on base bottom support bar 4.
Described installation governor motion comprises the position adjusting mechanism that the installing plate 5 for installing current vortex sensor moves up and down with the installing plate 5 described in driving, described installing plate 5 is provided with the mounting hole of multiple current vortex sensor 6, mounting hole is uniformly distributed, there is in mounting hole the keeper of fixing current vortex sensor 6, installing plate 5 to be positioned at above inductive disks 2 and parallel with inductive disks 2, and all current vortex sensors 6 are all positioned at the induction region of inductive disks 2.Keeper comprises the trip bolt 52 that the locating sleeve 51 of fixing current vortex sensor 6 and lock in place overlap 51 positions, as shown in Figure 4.
Described base comprises pedestal 71, support the back-up block 72 of pedestal 71 and make the vertical adjusting bolt 73 of pedestal 71 level, there is in pedestal 71 accommodating cavity A, shaking table 1 is positioned at accommodating cavity A and has distance with accommodating cavity inwall, pedestal 71 is evenly distributed with the horizontal adjustment bolt 74 regulating calibrating installation position, all horizontal adjustment bolt 74 all push against in shaking table 1 surface.As shown in Figure 1, 2, pedestal is annular, and shaking table is cylindrical.Certainly, pedestal also can be other shapes, as long as its accommodating cavity and shaking table adaptation, is not limited to the citing of the present embodiment.Installing plate 5 can be made to change with the correspondence position of inductive disks 2 by regulating horizontal adjustment bolt 74.When installing plate 5 center not with the center of inductive disks 2 on time, by the position regulating horizontal adjustment bolt can adjust installing plate 5, make installing plate center aim at inductive disks center.
By regulating vertical adjusting bolt 74 to regulate installing plate 5 and the depth of parallelism of inductive disks 2, ensure that the precision that current vortex sensor is calibrated.
As shown in Figure 5, described position adjusting mechanism comprises upper bracket 81, undersetting 82, connects adjusting screw(rod) 83 and the scale 84 of upper bracket 81 and undersetting 82, and drives adjusting screw(rod) 83 to rotate the knob making undersetting 82 upper and lower translation; Adjusting screw(rod) 83 is parallel with scale 84, and scale 84 top is fixedly connected with upper bracket 81, and scale 84 is slidably connected with undersetting 82; Upper bracket 81 is rotatable to be installed on support bar 4, and undersetting 82 is slidably rotatable to be installed on support bar 4, and undersetting 82 is provided with the latch mechanism of its position of locking, and installing plate 5 is fixed on undersetting 82.
Undersetting 82 is fixed with the threaded collar 85 engaged with adjusting screw(rod) 83.When adjusting screw(rod) 83 rotates, threaded collar 85 drive undersetting 82 along adjusting screw(rod) 83 axially upwards or move down.
Knob is the index dial 86 fixing with adjusting screw(rod) 83, and the resolution of index dial is 0.02 millimeter.Upper bracket is fixed with the shaft collar 87 corresponding with index dial 86, and shaft collar 87 is provided with datum line, index dial 86 circumferentially have scale mark.Index dial 86 and shaft collar 87 and scale 84 are combined into a micrometer caliper, scale 84 is equivalent to the fixing scale of micrometer caliper, the resolution of scale is 1 millimeter, index dial 86 and shaft collar 87 are equivalent to the movable mark of micrometer caliper, thus can the position of location and installation plate 5 accurately.Scale 84 and adjusting screw(rod) 83 be arranged in parallel, can ensure the depth of parallelism between upper bracket 81 and undersetting 82, improve the degree of accuracy of position.
Index dial 86 is fixed on the top of adjusting screw(rod) 83 by bearing pin 811, a pair thrust bearing 88 is provided with between adjusting screw(rod) 83 and upper bracket 81, thrust bearing 88 and adjusting screw(rod) 83 interference fit, thrust bearing 88 passes through nut 89 and pad 810 axial location, as shown in Figure 5.
As shown in Figure 6, latch mechanism comprises handle 91 and clamping piece 92, handle 91 is articulated with undersetting 82, handle 91 is fixed with cam 93, clamping piece 92 compresses to support bar 4 by cam 93, have spring 94 between clamping piece 92 and undersetting 82, spring 94 deformation when clamping piece 92 is pressed in support bar 4 by cam 93, when cam 93 discharges clamping piece 92, spring 94 recovers deformation.Clamping piece 92 is fixed with screw 95, undersetting 82 is provided with and holds the accommodating cavity B of this screw 95, and described spring 94 to be socketed on screw 95 and between screw 95 and undersetting 82.Cam 93 is fixed on the hinge axis 97 of handle 91 by pin 96.Undersetting 82 is provided with handle end cap 98, and handle end cap 98 pairs of hinge axis 97 play positioning action.
Clamping piece 92 is arc surface with the surface of contact of support bar 4, is plane with the surface of contact of cam 93.
As shown in Figure 7, upper bracket 81 has the through hole with support bar 4 clearance fit, upper bracket 81 is provided with the locking mechanism of locking upper bracket 81 and support bar 4 position, locking mechanism comprises the tie down screw 101 being arranged in upper bracket 81, the movable pinch part 102 engaged with tie down screw 101 and the fixed retaining member 103 with tie down screw 101 clearance fit, fixed retaining member 103 is fixed in upper bracket 81, and upper bracket 81 has and allows movable pinch part 102 along the axial translation of tie down screw 101 and limit its locating part rotated.Movable pinch part 102 and fixed retaining member 103 are with the surface of contact of support bar 4 cambered surface coordinated with support bar 4.Fixed retaining member 103 is offered the cylindrical hole with tie down screw 101 clearance fit.Movable pinch part 102 has the right cylinder of cutting plane for side, and this cutting plane coordinates the locating part as limiting movable latch gripping members 102 and rotating with upper bracket.
Support bar 4 top is provided with the boss 41 coordinated with the via clearance of upper bracket 81, and the diameter of boss 41 is less than the diameter of support bar 4.The effect of boss is, even if locking mechanism lost efficacy, the step between boss 41 and support bar 4 also can hold up upper bracket 81, avoids upper bracket 81 directly landing, damages current vortex sensor.
As shown in Figure 8, inductive disks 2 is fixed on supporting seat 21, and standard acceler 3 is installed on supporting seat 21, and supporting seat 21 is fixed by screw 22 with jigging platform moving coil 11.
Supporting seat in use, first by normal acceleration and be arranged on supporting seat lower end, then is fixed on shaking table 1 moving-coil, then inductive disks 2 is arranged on supporting seat by the present invention.Install before current vortex sensor 6, unclamp tie down screw 101 and swing handle makes cam 93 discharge clamping piece 92.Rotating installation governor motion makes installing plate 5 away from inductive disks 2 region, current vortex sensor 6 to be calibrated is put into locating sleeve 51, screws holding screw, and the current vortex sensor 6 in locating sleeve 51 is clamped.Then rotate and governor motion is installed, alignd with the center of inductive disks 2 in the center of installing plate 5.Then select tie down screw 101, movable pinch part 102 is to the direction translational near fixed retaining member 103, until movable pinch part 102 and fixed retaining member 103 clamping brace bar 4, now, upper bracket 81 is fixed with support bar 4.Then selection dial 86, index dial 86 drives adjusting screw(rod) 83 to rotate, and installing plate and undersetting 82 move up or down, and reads the DC voltage that current vortex sensor exports, makes installation voltage reach setting.Then select handle, clamping piece 92 is pressed in support bar 4 by cam 93, and undersetting 82 is fixed with support bar 4.Last Vibration on Start-up platform 1, starts to carry out dynamic calibration to current vortex sensor.
Beneficial effect of the present invention is:
1, shaft collar, index dial and scale form a micrometer caliper, and can regulate the calibrated distance between current vortex sensor and inductive disks accurately, precision is high, convenient and reliable operation.
2, shaking table is positioned at base, can the horizontal level of fine adjustment calibrating installation by horizontal adjustment bolt, make that inductive disks is good with the centering of installing plate, installing plate plane is parallel with inductive disks plane, ensure all current vortex sensors all in the region that inductive disks covers, ensure the precision of calibration.
3, clamping piece and support bar are that face contacts, and because clamping piece has certain length, support bar can be kept when therefore clamping piece and support bar are fitted completely uprightly not tilt, and the contact area of clamping piece and support bar is large, good stability.
4, installing plate has multiple mounting hole, once can calibrate multiple current vortex sensor, the efficiency of calibration is high.
Content described in this instructions embodiment is only enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also and conceive the equivalent technologies means that can expect according to the present invention in those skilled in the art.
Claims (7)
1. electric eddy transducer dynamic calibration device, involving vibrations platform, is fixed on the inductive disks on jigging platform moving coil, the standard acceler be fixedly connected with inductive disks, with the installation governor motion being provided with current vortex sensor, the support bar of base and connection base and installation governor motion; It is characterized in that: described installation governor motion comprises the position adjusting mechanism that the installing plate for installing current vortex sensor moves up and down with the installing plate described in driving, described position adjusting mechanism comprises upper bracket, undersetting, connect adjusting screw(rod) and the scale of upper bracket and undersetting, and drive adjusting screw(rod) to rotate with the knob making undersetting move up and down; Adjusting screw(rod) is parallel with scale, and scale top is fixedly connected with upper bracket, and scale is slidably connected with undersetting; Upper bracket is rotatable to be installed on support bar, and upper bracket is provided with the locking mechanism of its position of locking, and undersetting is slidably rotatable to be installed on support bar, and undersetting is provided with the latch mechanism of its position of locking, and installing plate is fixed on undersetting;
Described installing plate is provided with the mounting hole of multiple current vortex sensor, mounting hole is uniformly distributed, have the keeper of fixing current vortex sensor in mounting hole, installing plate to be positioned at above inductive disks and parallel with inductive disks, and all current vortex sensors are all positioned at the induction region of inductive disks;
Described base comprises pedestal, support the back-up block of pedestal and make the vertical adjusting bolt of pedestal level, in pedestal, there is accommodating cavity, shaking table is positioned at accommodating cavity and has distance with accommodating cavity inwall, pedestal is evenly distributed with the horizontal adjustment bolt regulating calibrating installation position, all horizontal adjustment bolt all push against in shaking table surface.
2. electric eddy transducer dynamic calibration device as claimed in claim 1, it is characterized in that: knob is the index dial fixing with adjusting screw(rod), upper bracket is fixed with the shaft collar corresponding with index dial, and shaft collar is provided with datum line, index dial circumferentially have scale mark.
3. electric eddy transducer dynamic calibration device as claimed in claim 2, it is characterized in that: latch mechanism comprises handle and clamping piece, handle is articulated with undersetting, handle is fixed with cam, clamping piece compresses to support bar by cam, spring is had, spring deformation when clamping piece is pressed in support bar by cam, spring-return deformation during cam release clamping piece between clamping piece and undersetting.
4. electric eddy transducer dynamic calibration device as claimed in claim 3, is characterized in that: clamping piece is fixed with screw, and undersetting is provided with the accommodating cavity holding this screw, and described spring housing to be connected on screw and between screw and undersetting.
5. electric eddy transducer dynamic calibration device as claimed in claim 4, is characterized in that: the surface of contact of clamping piece and support bar is arc surface, is plane with the surface of contact of cam.
6. electric eddy transducer dynamic calibration device as claimed in claim 5, it is characterized in that: inductive disks is fixed on supporting seat, standard acceler is installed on supporting seat, and supporting seat and jigging platform moving coil are fixed by screw.
7. electric eddy transducer dynamic calibration device as claimed in claim 6, it is characterized in that: upper bracket has the through hole with support bar clearance fit, upper bracket is provided with the locking mechanism of locking upper bracket and post position, locking mechanism comprises the tie down screw being arranged in upper bracket, the movable pinch part engaged with tie down screw and the fixed retaining member with tie down screw clearance fit, fixed retaining member is placed in upper bracket, and upper bracket has and allows movable pinch part along the axial translation of tie down screw and limit its locating part rotated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310321585.2A CN103411744B (en) | 2013-07-26 | 2013-07-26 | Electric eddy transducer dynamic calibration device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310321585.2A CN103411744B (en) | 2013-07-26 | 2013-07-26 | Electric eddy transducer dynamic calibration device |
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| CN103411744A CN103411744A (en) | 2013-11-27 |
| CN103411744B true CN103411744B (en) | 2016-01-13 |
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| CN110057523A (en) * | 2019-05-27 | 2019-07-26 | 中国工程物理研究院总体工程研究所 | A kind of more of broadband simultaneously pushes away pilot system |
| CN110375630B (en) * | 2019-07-23 | 2021-02-09 | 杭州申昊科技股份有限公司 | Adjusting structure of eddy current sensor |
| CN113074767A (en) * | 2021-03-30 | 2021-07-06 | 宁夏计量质量检验检测研究院 | Eddy current sensor dynamic and static integrated calibrating device |
| CN113074768B (en) * | 2021-03-30 | 2023-05-09 | 宁夏计量质量检验检测研究院 | Dynamic and static continuous calibration method for electric vortex sensor |
| CN113074769B (en) * | 2021-03-30 | 2022-05-03 | 宁夏计量质量检验检测研究院 | Control system for detecting dynamic and static indexes of eddy current sensor |
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