CN202853820U - High voltage isolation switch contact finger pressure test instrument - Google Patents
High voltage isolation switch contact finger pressure test instrument Download PDFInfo
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- CN202853820U CN202853820U CN 201220479019 CN201220479019U CN202853820U CN 202853820 U CN202853820 U CN 202853820U CN 201220479019 CN201220479019 CN 201220479019 CN 201220479019 U CN201220479019 U CN 201220479019U CN 202853820 U CN202853820 U CN 202853820U
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- chip microcomputer
- high voltage
- isolation switch
- voltage isolation
- signal output
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- 238000002955 isolation Methods 0.000 title claims abstract description 13
- 238000012360 testing method Methods 0.000 title abstract description 13
- 239000004973 liquid crystal related substance Substances 0.000 claims description 10
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 230000003321 amplification Effects 0.000 abstract 3
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 3
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 230000000007 visual effect Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses a high voltage isolation switch contact finger pressure test instrument which comprises a mold which is matched with the shape of a high voltage isolation switch contact in normal using, a contact pressure sensor, an acquisition and amplification circuit, a single chip microcomputer and a display. The contact pressure sensor is detachably embedded in the mold, and one end of the sensor is exposed from the mold. A signal output end of the contact pressure sensor is connected with a signal input end of the acquisition and amplification circuit through an RS232 data line. A signal output end of the acquisition and amplification circuit is connected with a signal input end of an A/D conversion circuit in the single chip microcomputer. A signal output end of the A/D conversion circuit in the single chip microcomputer is connected with a signal input end of a processor in the single chip microcomputer. A signal output end of the processor in the single chip microcomputer is connected with the display. The high voltage isolation switch contact finger pressure test instrument can test finger pressure of a high voltage isolation switch so as to solve a heating problem of the high voltage isolation switch contact due to insufficient pressure of a contact finger of the high voltage isolation switch in advance. The high voltage isolation switch contact finger pressure test instrument has the advantages of convenient test, high accuracy and visual display.
Description
Technical field
The utility model relates to a kind of testing tool of testing high voltage isolating switch sensing finger pressure.
Background technology
At present, the high voltage isolation switch contact heating problem can cause the fusing of contact heating position, increases frequency of power cut, affects the operation of power networks structure.Find through analysis, statistics to existing high voltage isolator heating problem, the heating of disconnector fingertip accounts for more than 80% of whole heating problems, and isolating switch sensing finger pressure is not enough and contact heating that cause the contact site loose contact to cause accounts for more than 60% of disconnector fingertip heating defect, therefore, the key of minimizing high voltage isolator heating is the pressure that guarantees the disconnector fingertip.Only have at present the contact situation of judging the contact site by the contact resistance in test disconnecting link loop, judge roughly whether the pressure of disconnector fingertip is qualified, lack preventative monitoring means." Hebei Electric Power Corporation's power transmission and transformation equipment state overhauling guide rule " 9.3.1 money " checks the dynamic/static contact contact " and the testing requirement of " Hebei Electric Power Corporation's power transmission and transformation equipment state diagnosis guide rule " 11.2.2 money " isolating switch sensing finger pressure does not meet technical conditions " in order to satisfy, increase disconnector state-detection means, fill up the blind spot that to measure sensing finger pressure in the work, in the urgent need to detecting the instrument of sensing finger pressure.
The utility model content
The purpose of this utility model solves the above-mentioned problems in the prior art exactly, and a kind of high-voltage isolating switch sensing finger pressure tester device is provided, and it is simple in structure, convenient test, accurately, intuitive display.
For achieving the above object, technical solution of the present utility model is: a kind of high-voltage isolating switch sensing finger pressure tester device, the high voltage isolation switch contact shape was complementary when it comprised with normal use the mould, contact pressure sensor, collection amplifying circuit, single-chip microcomputer and display; Contact pressure sensor removably is embedded in the mould, and an end exposes mould; The signal output part of contact pressure sensor connects the signal input part that gathers amplifying circuit by the RS232 data line, the signal output part that gathers amplifying circuit connects the signal input part of A/D change-over circuit in the single-chip microcomputer, the signal output part of A/D change-over circuit connects the signal input part of single-chip microcomputer inner treater in the single-chip microcomputer, and the signal output part of single-chip microcomputer inner treater connects display.
Display described above adopts liquid crystal display.
Contact pressure sensor described above adopts piezoresistive transducer.
During use, mould of the present utility model is connected between the disconnector fingertip, display can directly show isolating switch sensing finger pressure.The utility model can the testing high voltage disconnector sensing finger pressure, in order to solve in advance the generation of the high voltage isolation switch contact heating problem that the high voltage isolator fingertip causes because of insufficient pressure.The utility model convenient test, accuracy is high, intuitive display; It is simple in structure, and volume is little, lightweight, and is easy to carry.Can according to the difference of fingertip type only more mold exchange itself get final product, use cost is low.
Description of drawings
Fig. 1 is circuit block diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
The mould 3 that the high voltage isolation switch contact shape was complementary when as depicted in figs. 1 and 2, present embodiment comprised normal use the, piezoresistive pressure sensor 2, collection amplifying circuit 7, single-chip microcomputer 8 and liquid crystal display 9.Piezoresistive transducer 2 is fixed in the mould 3.4 is fingertip, and 1 is the fingertip spring.The pressure resistance type structure that piezoresistive transducer 2 is made of variable resistance R11, variable resistance R12, variable resistance R13 and variable resistance R14, gather amplifying circuit 7 and adopt OP07 type operational amplifier U1, single-chip microcomputer 8 adopts C805lF020 type single-chip microcomputer U2, and liquid crystal display 9 is selected HSl2864 graphic dot matrix liquid crystal display U3.The signal output part of piezoresistive pressure sensor 2 is by input end 2 pin and 3 pin of RS232 data line 5 and resistance R 2 and resistance R 3 concatenation operation amplifier U1, output terminal 6 pin of operational amplifier U1 connect single-chip microcomputer U2 signal input part P1.0 pin by resistance R 5, convert the simulated pressure value to digital value by the A/D change-over circuit in the single-chip microcomputer U2, processor in single-chip microcomputer U2 converts this digital value to data that display can show again, signal output part P0.0 pin by single-chip microcomputer U2, the P0.1 pin, the P0.2 pin, the P0.3 pin, the P0.4 pin, the P0.5 pin, P0.6 pin and P0.7 pin are exported to the signal pins input end DB0 pin of graphic dot matrix liquid crystal display U3 by data bus, the DB1 pin, the DB2 pin, the DB3 pin, the DB4 pin, the DB5 pin, the DB6 pin, the DB7 pin, RS pin and R/W pin are shown by graphic dot matrix liquid crystal display U3.8 pin of operational amplifier U1 connect the end of slide rheostat R8, and 6 pin are connected to the other end of slide rheostat R8, and 1 pin connects+the 9V power supply, 4 pin connection-9V power supplys, and 2 pin connect 6 pin by resistance R 4; Center tap connection+9V the power supply of slide rheostat R8.16 pin of single-chip microcomputer U2 with are connected pin and connect respectively the input end that model is the integrated chip U4 of 74HC00, the signal output part of integrated chip U4 is connected to the E pin of liquid crystal display U3; The external crystal oscillating circuit that is formed by capacitor C 3, capacitor C 4 and crystal oscillator T of 18 pin of single-chip microcomputer U2.The resetting pin RST of liquid crystal display U3 is leaded up to capacitor C 2 ground connection, and another road meets power supply VCC by resistance R 10.
Above-described embodiment only is preferred and exemplary; those skilled in the art for example can be according to the description of this patent; adopt the operational amplifier U1 of other model; the single-chip microcomputer of other model and the liquid crystal display of other model; as long as its function can realize amplifying, AD changes and show that it is all covered by the protection domain of this patent.
Claims (3)
1. a high-voltage isolating switch sensing finger pressure tester device is characterized in that: the high voltage isolation switch contact shape was complementary when it comprised with normal use the mould, contact pressure sensor, collection amplifying circuit, single-chip microcomputer and display; Contact pressure sensor removably is embedded in the mould, and an end exposes mould; The signal output part of contact pressure sensor connects the signal input part that gathers amplifying circuit by the RS232 data line, the signal output part that gathers amplifying circuit connects the signal input part of A/D change-over circuit in the single-chip microcomputer, the signal output part of A/D change-over circuit connects the signal input part of single-chip microcomputer inner treater in the single-chip microcomputer, and the signal output part of single-chip microcomputer inner treater connects display.
2. high-voltage isolating switch sensing finger pressure tester device according to claim 1 is characterized in that: described display employing liquid crystal display.
3. it is characterized in that according to claim 1 or 2 described high-voltage isolating switch sensing finger pressure tester devices: described contact pressure sensor adopts piezoresistive transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220479019 CN202853820U (en) | 2012-09-20 | 2012-09-20 | High voltage isolation switch contact finger pressure test instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220479019 CN202853820U (en) | 2012-09-20 | 2012-09-20 | High voltage isolation switch contact finger pressure test instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202853820U true CN202853820U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220479019 Expired - Fee Related CN202853820U (en) | 2012-09-20 | 2012-09-20 | High voltage isolation switch contact finger pressure test instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202853820U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865950A (en) * | 2012-09-20 | 2013-01-09 | 保定供电公司 | Contact finger pressure test instrument of high-voltage isolation switch |
| CN104132764A (en) * | 2014-08-14 | 2014-11-05 | 中联重科股份有限公司 | Caterpillar tension measuring device and caterpillar vehicle comprising same |
| CN105575716A (en) * | 2015-12-15 | 2016-05-11 | 国家电网公司 | High voltage isolation switch with contact finger pressure test device |
-
2012
- 2012-09-20 CN CN 201220479019 patent/CN202853820U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865950A (en) * | 2012-09-20 | 2013-01-09 | 保定供电公司 | Contact finger pressure test instrument of high-voltage isolation switch |
| CN104132764A (en) * | 2014-08-14 | 2014-11-05 | 中联重科股份有限公司 | Caterpillar tension measuring device and caterpillar vehicle comprising same |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131128 Address after: 100761 West Chang'an Avenue, Beijing, No. 86, No. Patentee after: State Grid Corporation of China Patentee after: State Grid Hebei Electric Power Company Patentee after: Baoding Power Supply Branch Company, State Grid Hebei Electric Power Company Address before: 071051 No. 138 sunny north street, new urban district, Hebei, Baoding Patentee before: Baoding Power Supply Company |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20180920 |