CN2139538Y - Automatic checking instrument for main circuit breaker of power locomotive - Google Patents
Automatic checking instrument for main circuit breaker of power locomotive Download PDFInfo
- Publication number
- CN2139538Y CN2139538Y CN 92233946 CN92233946U CN2139538Y CN 2139538 Y CN2139538 Y CN 2139538Y CN 92233946 CN92233946 CN 92233946 CN 92233946 U CN92233946 U CN 92233946U CN 2139538 Y CN2139538 Y CN 2139538Y
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- circuit breaker
- plate
- line
- relay
- ctc
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Abstract
The utility model relates to an automatic checking instrument for the main circuit breaker of a power locomotive, comprising an STD bus single-board computer, a controlling conversion board, a TZ contacting resistance tester, a ZC48 type megohmmeter and an A/D board. The utility model can be used for testing a main circuit breaker in operation or getting down, and the main contact of the main circuit breaker, the isolating switch, the time of a time-delay valve, a contacting resistance and a nonlinear resistor are tested. The utility model has the advantages of the realization of the automatic test work of the various technology performance indexes of the main circuit breaker, convenient operation, high precision and strong anti-jamming property.
Description
The utility model relates to a kind of main circuit breaker of electric locomotive automatic tester.
Line circuit breaker is the main supply switch of electric locomotive power circuit, also is a kind of important fender guard on the locomotive.When the locomotive major loop is short-circuited, ground connection, rectifier arm puncture; traction electric machine flashover, overload, tap changer screens and auxiliary circuit overload, short circuit, ground connection, the zero voltage protection actuating of relay etc.; all cut off the general supply of contact system and locomotive automatically by line circuit breaker; the accident that prevents enlarges, and guarantees the personal safety of locomotive equipment and bus attendant.According to the technical requirements of line circuit breaker, need its main contact turnoff time, time delay valve delay time, disconnector closing period, performances such as nonlinear resistance and contact resistance are tested.At present, these test jobs all are that the corresponding instrument and meter of manual operation detects, and time-consuming, its test result is because of the people, and is extremely inaccurate.In addition, every performance figure need test separately, can not carry out system to line circuit breaker and detect, and particularly then can't test the line circuit breaker in employing.
The purpose of this utility model is at above-mentioned shortcoming of the prior art, and provide a kind of accuracy of detection height, the automatic tester of main circuit breaker of electric locomotive flexibly easy to use, it can realize nonlinear resistance, main contact and disconnector contact resistance, main contact turnoff time to line circuit breaker, the time delay valve delay time, the automation that the disconnector closing period detects.
The purpose of this utility model is to realize like this, it is by the STD bus single board computer (SBC), the control transformation plate, TZ contact resistance tester (being called for short the TZ instrument), ZC48 type megger (abbreviation high pressure generator) and A/D plate are formed, the STD bus single board computer (SBC) is by the CPU motherboard, the CTC/PIO plate, relay board, keyboard, display unit and chopping machine are formed, the control transformation plate is controlled by relay board, the control transformation plate measures line by signal and line circuit breaker and 4 breaks, 4 close electromagnetic valve is connected, the output of control transformation plate connects the CTC/PIO plate, and the TZ instrument is connected with the control transformation plate with high pressure generator, the output of TZ instrument and high pressure generator through the A/D plate to CPU board.
In order to carry out communication, test result is sent to system's machine, this novel SIO communication interface and long line transmitter of also being provided with the system machine.
Principle of work of the present utility model is as follows: STD bus execution of program instructions, control transformation plate start 4 disconnected or 4 resistances of closing closing period, contact resistance and the nonlinear resistance of delay time that electromagnetic valve, CTC timing, TZ and high pressure generator wait the turnoff time of testing the line circuit breaker main contact, time delay valve, disconnector to line circuit breaker.
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is a functional block diagram of the present utility model.
Fig. 2 (1), 2(2), 2(3) be control transformation plate schematic circuit diagram.
The line circuit breaker main contact that Fig. 3 uses for the test nonlinear resistance disconnects decision circuitry.
Fig. 4 is a main program block diagram.
As shown in Figure 1, the utility model is made up of STD bus single board computer (SBC), control transformation plate, TZ contact resistance tester, ZC48 type megger and A/D plate.The STD bus single board computer (SBC) is made up of CPU motherboard, CTC/PIO plate, relay board, keyboard, display unit and chopping machine, and it also comprises SIO serial communication interface and long line transmitter.The cpu motherboard machine adopts Z80A, and the CTC/PIO model is TPSTD8604, and the relay board model is TPSTD8506.A/D plate model is TPSTD8402.The control transformation plate is controlled by relay board, and the control transformation plate measures line XH1-6 and D1-2 by signal and closes electromagnetic valve C with line circuit breaker and 4 outage magnet valve B, 4 respectively and be connected.The output of control transformation circuit connects the CTC/PIO plate.The TZ instrument is connected with the control transformation plate with high pressure generator.The output of TZ instrument and high pressure generator through the A/D plate to CPU board.
By Fig. 2 (1)-2(3) as can be known, the control transformation plate is by relay, the test conversion circuit, the disconnection of line circuit breaker and closed control circuit and CTC trigger circuit are formed, relay is made up of J1-7, ground connection after the end parallel connection of J1-7, the other end JD1-JD7 of J1-7 succeeds appliance plate, the test conversion circuit is controlled the conversion that the signal that links to each other with line circuit breaker measures line XH1-XH6 by the contact of relay J 1-5, and the disconnection of line circuit breaker and closed control circuit and CTC trigger circuit are the timing actuation signal power supplys that closed electromagnetic valve C and CTC by the contact control 4 outage magnet valve B and 4 of relay J 6-7.
As shown in Figure 3, high pressure generator is set up the line circuit breaker main contact disconnection decision circuitry that the test nonlinear resistance is used, it is made up of voltage comparator ic and external no part R1-8 thereof, C1-2, potential device W, the nonlinear resistance R of line circuit breaker and the circuit parallel of main contact P with connect after R1, R2 connect high pressure generator+the 2500V mouth, R2 one end ground connection, forward and reverse input end of voltage comparator ic is connected to resistance R 2 two ends by R7, R8 respectively, and the output of IC meets PIO.
Test job principle of the present utility model is as follows:
1, between the time-delay of main contact turnoff time, time delay valve and the test of the closing period of disconnector:
Relay board becomes control signal corresponding with the relevant controlling instruction of CPU executive routine, makes relay J 1, J6, J7 action, and the open contact of J1 is connected the PIO circuit.J6 or J7 action, 4 disconnected or 4 close electromagnetic valve and get electronic work, CTC picks up counting, simultaneously, the output of control transformation plate is discerned through PIO, (becoming high level by low level) touches out and the time delay valve delay time for main contact, first time that this moment, CPU read in is the main contact turnoff time, and second time is the time delay valve delay time.When (becoming low level by high level), the time that CPU reads in is the closing period of disconnector.
2, the test of main contact and disconnector contact resistance:
Relay board control control transformation plate, make relay J 1, J2, J4 action, the test conversion circuit will be connected PIO plate and TZ instrument, when PIO plate identification main contact, when disconnector all is low level, just main deenergizing device is in closed position, and the TZ instrument carries out the contact resistance test, and its test result is sent computer stored or shown through the A/D plate and prints.
3, nonlinear resistance test:
When the test nonlinear resistance,, can't test like this because main contact is in parallel with nonlinear resistance R.Therefore adopt circuit shown in Figure 3, utilize voltage comparator ic (LM311) to judge whether main contact disconnects.When the line circuit breaker main contact disconnected, the voltage signal on the nonlinear resistance R changed, and LM311 output is overturn, by PIO identification (low level becomes high level).
During the test nonlinear resistance, the low level signal line that is connected with computing machine has been cut off in J5, J6 adhesive, J5 adhesive, has connected the 2500V dc voltage circuit.The J6 adhesive makes 4 outage magnet valve adhesives.When PIO was identified as high level, after just main contact disconnected, behind delay procedure time-delay 20ms, CPU went out instruction, through the A/D plate analog quantity is converted to digital quantity again, read in to store in the computing machine or show and printed.
Fig. 4 is a flow chart, and the software program of this instrument is weaved into by the Z80 assembly language, and whole procedure adopts sub-journey function block structure, has digital filter program, has improved data precision.
The utility model can be tested the main circuit breaker in using and the main circuit breaker on ground. Test main circuit breaker main contact, isolating switch, the time of time-delay valve, contact resistance, nonlinear resistance. The utility model has the advantages that the automatic test job that can realize the every technical performance index of main circuit breaker. Easy and simple to handle, anti-interference strong, precision is high. Its application will improve the quality state information that main circuit breaker is provided with repair quality, timely of employing of main disconnected device effectively, for the electric locomotive state is repaiied and data network is laid a good foundation.
Claims (4)
1, a kind of main circuit breaker of electric locomotive automatic tester, it is characterized in that it is by the STD bus single board computer (SBC), the control transformation plate, TZ contact resistance tester (being called for short the TZ instrument), ZC48 type megger (abbreviation high pressure generator) and A/D plate are formed, the STD bus single board computer (SBC) is by the CPU motherboard, the CTC/PIO plate, relay board, keyboard, display unit and chopping machine are formed, the control transformation plate is controlled by relay board, the control transformation plate measures line by signal and line circuit breaker and 4 breaks, 4 close electromagnetic valve is connected, the output of control transformation plate connects the CTC/PIO plate, the TZ instrument is connected with the control transformation plate with high pressure generator, the output of TZ instrument and high pressure generator through the A/D plate to CPU board.
2, detector according to claim 1 is characterized in that the STD bus single board computer (SBC) also comprises SIO serial communication interface and long line transmitter.
3, detector according to claim 1 and 2, it is characterized in that the control transformation plate is by relay, the test conversion circuit, the disconnection of line circuit breaker and closed control circuit and CTC trigger circuit are formed, relay is made up of J1-7, ground connection after the end parallel connection of J1-7, the other end JD1-JD7 of J1-7 succeeds appliance plate, the test conversion circuit is controlled the conversion that the signal that links to each other with line circuit breaker measures line XH1-XH6 by the contact of relay J 1-5, and the disconnection of line circuit breaker and closed control circuit and CTC trigger circuit are the timing actuation signal power supplys that closed electromagnetic valve C and CTC by the contact control 4 outage magnet valve B and 4 of relay J 6-7.
4, detector according to claim 3, it is characterized in that high pressure generator sets up the line circuit breaker main contact used of test nonlinear resistance and disconnect decision circuitry, it is made up of voltage comparator ic and external no part R1-8 thereof, C1-2, potential device W, the nonlinear resistance R of line circuit breaker and the circuit parallel of main contact P with connect after R1, R2 connect high pressure generator+the 2500V mouth, R2 one end ground connection, forward and reverse input end of voltage comparator ic is connected to resistance R 2 two ends by R7, R8 respectively, and the output of IC meets PIO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92233946 CN2139538Y (en) | 1992-09-28 | 1992-09-28 | Automatic checking instrument for main circuit breaker of power locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92233946 CN2139538Y (en) | 1992-09-28 | 1992-09-28 | Automatic checking instrument for main circuit breaker of power locomotive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2139538Y true CN2139538Y (en) | 1993-08-04 |
Family
ID=33776145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92233946 Expired - Fee Related CN2139538Y (en) | 1992-09-28 | 1992-09-28 | Automatic checking instrument for main circuit breaker of power locomotive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2139538Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086668B (en) * | 2006-06-09 | 2010-06-16 | 空中客车德国有限公司 | Method and apparatus for testing valve control system |
| CN101672875B (en) * | 2009-10-13 | 2011-07-27 | 西安交通大学 | Detection system of pantograph carbon slide bonding resistance of electromotive |
| US8423313B2 (en) | 2007-11-29 | 2013-04-16 | Airbus Operations Gmbh | Method and apparatus for testing valve control system |
-
1992
- 1992-09-28 CN CN 92233946 patent/CN2139538Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086668B (en) * | 2006-06-09 | 2010-06-16 | 空中客车德国有限公司 | Method and apparatus for testing valve control system |
| US8423313B2 (en) | 2007-11-29 | 2013-04-16 | Airbus Operations Gmbh | Method and apparatus for testing valve control system |
| CN101672875B (en) * | 2009-10-13 | 2011-07-27 | 西安交通大学 | Detection system of pantograph carbon slide bonding resistance of electromotive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |