CN201615812U - Contact pressure detection device of load switch contact - Google Patents
Contact pressure detection device of load switch contact Download PDFInfo
- Publication number
- CN201615812U CN201615812U CN2009202635812U CN200920263581U CN201615812U CN 201615812 U CN201615812 U CN 201615812U CN 2009202635812 U CN2009202635812 U CN 2009202635812U CN 200920263581 U CN200920263581 U CN 200920263581U CN 201615812 U CN201615812 U CN 201615812U
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- contact
- load switch
- load cells
- signal input
- weight display
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Abstract
The utility model relates to a contact pressure detection device of a load switch contact. The contact pressure detection device is characterized in that the device comprises a weighing sensor (1) and a weighing display (2), wherein the signal output terminal of the weighing sensor (1) is electrically connected with the signal input terminal of the weighing display (2); the weighing sensor (1) consists of a pressure sensing head and a measurement circuit; the electric signal output terminal of the pressure sensing head is connected with the signal input terminal of the measurement circuit; and the signal output terminal of the measurement circuit is connected with the signal input terminal of the weighing display (2). The distance between the two end faces clamped by moving contacts is equal to that between the two end faces of a static contact of the load switch clamped by the moving contacts, so that the pressure on the weighing sensor is equal to that on the static contact of the load switch. The contact pressure detection device has the advantages of convenient operation, high work efficiency and high measurement accuracy.
Description
Technical field
The utility model relates to a kind of on-load switch contact contact pressure pick-up unit, belongs to contact pressure and measures and the electrical equipment technical field.
Background technology
At present, the on-load switch that ring main unit is used generally all is the purpose that reaches conduction by the clamp of its dynamic and static contact, contact pressure between the wherein dynamic and static contact is a very crucial technical parameter, when contact pressure is not enough, be easy to cause the situation of loose contact and the damage of dynamic and static contact, thereby influence the safe operation of electrical network.How accurately, debugged contact pressure intuitively simultaneously, because the structure of ring main unit on-load switch is very compact, its clearance between open contacts has only 10mm, makes a lot of testing tools have no way of doing it,, be this series products a difficult problem in the industry.With reference to Fig. 2, generally be to come detection contact pressure in the prior art with the old way of " lever 5+ spring balance 6+ clearance gauge ", concrete operations are as follows: pull spring balance 6, spring balance 6 hooks lever 5 surface of contact between moving contact 3 and the static contact 4 are pried open a slit, again clearance gauge is put into slit pulling gently back and forth, when sensation can just be twitched clearance gauge, the numerical value * brake leverage of contact pressure=spring balance that record this moment.There is following shortcoming in this measuring method: 1, require survey crew to use instruments such as spring balance, clearance gauge and lever to measure simultaneously, operate very inconvenient; 2, after measurement is finished, also must each measurement data be carried out record by survey crew, just can obtain a result through calculating, work efficiency is low; 3, the operate miss of the sum of errors survey crew of instrument itself causes different people often to draw different force value, and the accuracy of measurement is low.
The utility model content
The utility model technical issues that need to address, it is the purpose of this utility model, be low and measure inaccurate shortcoming, a kind of easy to operate, high efficiency and the high on-load switch contact contact pressure pick-up unit of accuracy are provided in order to overcome inconvenient operation, efficient that existing manual inspection method exists.
The purpose of this utility model can reach by following measure:
A kind of on-load switch contact contact pressure pick-up unit, its design feature is: it comprises LOAD CELLS and weight display, the signal output part of LOAD CELLS is electrically connected with the weight display signal input part; Described LOAD CELLS is made of pressure sensitive head and metering circuit, and the electrical signal of pressure sensitive head connects the signal input part of metering circuit, and the signal output part of metering circuit connects the signal input part of weight display.
In the use, described LOAD CELLS is equated by the distance between two end faces of moving contact clamping with the on-load switch static contact by the distance between two end faces of on-load switch moving contact clamping.
The purpose of this utility model can also reach by following measure:
A kind of embodiment of the present utility model is: the pressure sensitive head of described LOAD CELLS is made of elastic body and the resistance strain gage of pasting on the elasticity volume, metering circuit is arranged in the elastic body, and the signal output part of resistance strain gage is electrically connected with the signal input part of weight display by metering circuit and transmission cable.
A kind of embodiment of the present utility model is: LOAD CELLS be shaped as the notch cuttype cylindrical shape, connect into one-piece construction by a large cylinder and a small cylinder.
A kind of embodiment of the present utility model is: described weight display is provided with serial communication interface and print-out device.
During use, the large round end surface of described LOAD CELLS one side and moving contact one presses that projection contact, the roundlet end face of its opposite side and moving contact another press protruding the contact.Described LOAD CELLS is equated by the distance between two end faces of moving contact clamping with the on-load switch static contact by the distance between two end faces of moving contact clamping (large round end surface and roundlet end face).
The beneficial effects of the utility model are:
Pick-up unit described in the utility model is made of LOAD CELLS and weight display, because described LOAD CELLS equated by the distance between two end faces of moving contact clamping with the on-load switch static contact by the distance between two end faces of moving contact clamping, so the suffered pressure of LOAD CELLS is identical with the pressure that the on-load switch static contact is subjected to.During debugging, at first LOAD CELLS is sandwiched between two moving contact sheets of on-load switch moving contact, and then regulate moving contact pressure, show that on weight display the force value that meets the demands gets final product by unclamping or tighting a bolt.Simultaneously the display precision of this device is: 1/3000～1/30000 (in fact precision be 0.01 just enough).That this pick-up unit has is easy to operate, high efficiency and the high advantage of accuracy of measurement.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of the utility model specific embodiment.
Fig. 2 is the structural representation of switch contact contact pressure pick-up unit of the prior art.
Embodiment
Specific embodiment:
Referring to Fig. 1, present embodiment comprises LOAD CELLS 1 and weight display 2, and described LOAD CELLS 1 is electrically connected with weight display 2; Described LOAD CELLS 1 is equated by the distance between two end faces of moving contact clamping with the on-load switch static contact by the distance between two end faces of moving contact 3 clampings.Described LOAD CELLS 1 mainly by elastic body, paste the resistance strain gage on the elasticity volume and the metering circuit and the transmission cable that are arranged in the elastic body are formed, resistance strain gage is electrically connected with weight display by metering circuit and transmission cable.Described LOAD CELLS be shaped as the notch cuttype cylindrical shape, it connects into one-piece construction by a large cylinder 11 and a small cylinder 12.During use, the large round end surface of described LOAD CELLS one side and moving contact one presses that projection contact, the roundlet end face of its opposite side and moving contact another press protruding the contact.Weight display is provided with serial communication interface and print-out device.
In the present embodiment, two insulating press boards 32 that the moving contact 3 of described on-load switch is located at the movable contact spring outside by two moving contact sheets 31, respectively constitute, two moving contact sheets 32 and two insulating press boards 32 are set on the bolt 33 together, be arranged with insulation sleeve 34 on the bolt 33, be arranged with pressure spring 35 between insulating press boards 32 and the moving contact sheet 31.Be respectively equipped with on two moving contact sheets 31 and press 36, two of projectioies to press projection 36 mutually corresponding.Two of two moving contact sheets that described LOAD CELLS 1 is clipped in on-load switch moving contact 3 press between the projection 36, can adjust two distances between the moving contact sheet by regulating bolt 33, reach the purpose of regulating contact pressure.
Principle of work of the present utility model is as follows:
During debugging, two that at first LOAD CELLS are sandwiched the on-load switch moving contact press between the projection, and when elastic body was subjected to the pressure distortion of on-load switch moving contact, the resistance strain gage on it was out of shape thereupon, and cause resistance to change.Metering circuit is measured the foil gauge changes in resistance and is transformed to the electric signal output that is in proportion with external force.Electric signal demonstrates the size of on-load switch moving contact pressure with digital form after weight display is handled.Regulate moving contact pressure by unclamping or tighting a bolt then, on weight display, show the force value that meets the demands.
The above; it only is the preferable specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and inventive concept thereof, all belonged to protection domain of the present utility model.
Claims (4)
1. on-load switch contact contact pressure pick-up unit, it is characterized in that: it comprises LOAD CELLS (1) and weight display (2), the signal output part of LOAD CELLS (1) is electrically connected with weight display (2) signal input part; Described LOAD CELLS (1) is made of pressure sensitive head and metering circuit, and the electrical signal of pressure sensitive head connects the signal input part of metering circuit, and the signal output part of metering circuit connects the signal input part of weight display (2).
2. a kind of on-load switch contact contact pressure pick-up unit according to claim 1, it is characterized in that: the pressure sensitive head of described LOAD CELLS (1) is made of elastic body and the resistance strain gage of pasting on the elasticity volume, metering circuit is arranged in the elastic body, and the signal output part of resistance strain gage is electrically connected with the signal input part of weight display (2) by metering circuit and transmission cable.
3. a kind of on-load switch contact contact pressure pick-up unit according to claim 1 and 2 is characterized in that: LOAD CELLS (1) be shaped as the notch cuttype cylindrical shape, connect into one-piece construction by a large cylinder (11) and a small cylinder (12).
4. a kind of on-load switch contact contact pressure pick-up unit according to claim 1 and 2, it is characterized in that: described weight display (2) is provided with serial communication interface and print-out device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202635812U CN201615812U (en) | 2009-11-27 | 2009-11-27 | Contact pressure detection device of load switch contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202635812U CN201615812U (en) | 2009-11-27 | 2009-11-27 | Contact pressure detection device of load switch contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201615812U true CN201615812U (en) | 2010-10-27 |
Family
ID=43002179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202635812U Expired - Fee Related CN201615812U (en) | 2009-11-27 | 2009-11-27 | Contact pressure detection device of load switch contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201615812U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840934A (en) * | 2012-09-03 | 2012-12-26 | 柳州科路测量仪器有限责任公司 | Change-over switch contact pressure detection equipment |
| CN102954849A (en) * | 2012-11-09 | 2013-03-06 | 厦门Abb开关有限公司 | Device and method for measuring pressure of inner contact finger in moving contact of high-voltage switchgear |
| CN103063334A (en) * | 2012-12-21 | 2013-04-24 | 铜陵市晶赛电子有限责任公司 | Relay contact pressure measuring device |
| CN103217245A (en) * | 2013-03-27 | 2013-07-24 | 国家电网公司 | Clamping force measurement device used for isolating switch |
| CN105547528A (en) * | 2016-01-28 | 2016-05-04 | 天一同益电气股份有限公司 | Testing device capable of testing work pressure of plum-blossom-shaped contact |
| CN105575716A (en) * | 2015-12-15 | 2016-05-11 | 国家电网公司 | High voltage isolation switch with contact finger pressure test device |
| CN110567618A (en) * | 2019-07-29 | 2019-12-13 | 深圳供电局有限公司 | Contact engagement force detection device and platform |
| CN112390159A (en) * | 2020-11-14 | 2021-02-23 | 徐州长航科技有限公司 | Height limiter with protective cover limiting and protecting structure |
-
2009
- 2009-11-27 CN CN2009202635812U patent/CN201615812U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840934A (en) * | 2012-09-03 | 2012-12-26 | 柳州科路测量仪器有限责任公司 | Change-over switch contact pressure detection equipment |
| CN102840934B (en) * | 2012-09-03 | 2014-07-23 | 柳州科路测量仪器有限责任公司 | Change-over switch contact pressure detection equipment |
| CN102954849B (en) * | 2012-11-09 | 2015-09-09 | 厦门Abb开关有限公司 | A kind of device and method measuring sensing finger pressure in high-tension switch gear moving contact |
| CN102954849A (en) * | 2012-11-09 | 2013-03-06 | 厦门Abb开关有限公司 | Device and method for measuring pressure of inner contact finger in moving contact of high-voltage switchgear |
| CN103063334A (en) * | 2012-12-21 | 2013-04-24 | 铜陵市晶赛电子有限责任公司 | Relay contact pressure measuring device |
| CN103063334B (en) * | 2012-12-21 | 2014-07-30 | 铜陵市晶赛电子有限责任公司 | Relay contact pressure measuring device |
| CN103217245A (en) * | 2013-03-27 | 2013-07-24 | 国家电网公司 | Clamping force measurement device used for isolating switch |
| CN105575716A (en) * | 2015-12-15 | 2016-05-11 | 国家电网公司 | High voltage isolation switch with contact finger pressure test device |
| CN105575716B (en) * | 2015-12-15 | 2017-12-05 | 国家电网公司 | A kind of high voltage isolator with sensing finger pressure test device |
| CN105547528A (en) * | 2016-01-28 | 2016-05-04 | 天一同益电气股份有限公司 | Testing device capable of testing work pressure of plum-blossom-shaped contact |
| CN105547528B (en) * | 2016-01-28 | 2018-03-16 | 天一同益电气股份有限公司 | A kind of test equipment that can test Mume flower contact operating pressure |
| CN110567618A (en) * | 2019-07-29 | 2019-12-13 | 深圳供电局有限公司 | Contact engagement force detection device and platform |
| CN110567618B (en) * | 2019-07-29 | 2021-08-24 | 深圳供电局有限公司 | Contact engagement force detection device and platform |
| CN112390159A (en) * | 2020-11-14 | 2021-02-23 | 徐州长航科技有限公司 | Height limiter with protective cover limiting and protecting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20141127 |
|
| EXPY | Termination of patent right or utility model |