CN210535573U - Interlocking device of vacuum circuit breaker - Google Patents
Interlocking device of vacuum circuit breaker Download PDFInfo
- Publication number
- CN210535573U CN210535573U CN201922208285.9U CN201922208285U CN210535573U CN 210535573 U CN210535573 U CN 210535573U CN 201922208285 U CN201922208285 U CN 201922208285U CN 210535573 U CN210535573 U CN 210535573U
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- CN
- China
- Prior art keywords
- auxiliary switch
- relay
- circuit breaker
- rectifier bridge
- vacuum circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000004146 energy storage Methods 0.000 claims abstract description 5
- 230000000903 blocking effect Effects 0.000 claims abstract 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Abstract
The utility model relates to a vacuum circuit breaker's interlock, including combined floodgate return circuit, closed circuit and separating brake return circuit, closed circuit includes first rectifier bridge, the direct current side of first rectifier bridge concatenates current-limiting resistor and blocking relay, closed circuit includes the second rectifier bridge, the direct current side of second rectifier bridge includes two branches, first branch is including the normally open auxiliary switch of vacuum circuit breaker's that the coil of anti-tripping relay and the parallel connection and the normally open auxiliary switch of anti-tripping relay, the second branch is including the coil of the combined floodgate relay who concatenates, the energy storage state normally opens auxiliary switch, the jumper connection piece, vacuum circuit breaker's normally closed auxiliary switch, the normally closed auxiliary switch of anti-tripping relay, the normally open auxiliary switch of blocking relay and jumper connection piece parallel connection. When the vacuum circuit breaker enters the power system to operate, the jumper connecting sheet is removed, and when the locking loop is electrified, the locking closing mechanism is locked, so that the tripping-preventing mechanism works. The utility model has the characteristics of simple structure, flexible operation.
Description
Technical Field
The utility model relates to a vacuum circuit breaker's interlock.
Background
When the power system operates, the switching-on operation of the vacuum circuit breaker needs to be interlocked in multiple ways, and after the vacuum circuit breaker is switched on, the vacuum circuit breaker needs to be locked and switched on, so that the switching-on operation is prevented from being carried out again. When the vacuum circuit breaker is debugged, only the internal mechanism of the circuit breaker needs to be measured and controlled smoothly, and the internal measurement and control relation is whether the spring energy storage mechanism stores energy or not and whether the tripping mechanism can work effectively or not. The interlocking device of the existing vacuum circuit breaker is imperfect in function, lacks the function of locking and closing and is easy to cause mechanism damage.
Disclosure of Invention
In view of this, the present invention provides an interlock device for a vacuum circuit breaker, which has a complete interlock device and can effectively close a switch.
In order to achieve the above purpose, the present invention adopts an interlock device of a vacuum circuit breaker, which comprises a closing loop, a locking loop and an opening loop, the locking loop comprises a first rectifier bridge, the direct current side of the first rectifier bridge is connected in series with a current-limiting resistor and a locking relay, the closing circuit include the second rectifier bridge, the direct current side of second rectifier bridge include two branches, first branch is including the normally open auxiliary switch of vacuum circuit breaker who prevents tripping relay's coil and parallel connection and the normally open auxiliary switch of preventing tripping relay, the second branch is including the normally open auxiliary switch of the closing relay's that concatenates coil, energy storage state, the normally closed auxiliary switch of jumper connection piece, vacuum circuit breaker, the normally closed auxiliary switch of preventing tripping relay, the normally open auxiliary switch of latching relay with the normally closed auxiliary switch of jumper connection piece parallel connection. Compared with the prior art, the invention has the beneficial technical effects that: through the setting of above structure, when vacuum circuit breaker gets into the electric power system operation, the jumper connection piece is removed, the fracture only is connected by latching relay's normally open auxiliary switch this moment, it is electrified to be in the closed loop when the shutting, latching relay combined floodgate, latching relay's normally open auxiliary switch is closed, closing relay's coil place branch road just can be electrified, and then make the circular telegram of preventing tripping relay, the shutting closing mechanism and the work of preventing tripping mechanism, guarantee that vacuum circuit breaker can keep closing a floodgate steadily, on the other hand, when vacuum circuit breaker only need overhaul the debugging, by jumper connection piece short circuit latching relay's coil, vacuum circuit breaker need not the shutting closing this moment. The utility model has the characteristics of simple structure, flexible operation.
Particularly, the alternating current side of the first rectifier bridge is connected in series with a normally closed contact of a test position travel switch, and the normally closed contact of the test position travel switch is connected in parallel with a normally open switch of a working position travel switch. Through the arrangement of the structure, only when the vacuum circuit breaker is in a working position, the closing and locking functions can be achieved.
Drawings
Fig. 1 is a control schematic diagram of an embodiment of the present invention.
Detailed Description
As shown in fig. 1, an interlocking device of a vacuum circuit breaker comprises a closing loop, a locking loop and a breaking loop, wherein the locking loop comprises a first rectifier bridge V4, the direct current side of the first rectifier bridge V4 is connected in series with a current limiting resistor R1 and a locking relay Y1, the closing loop comprises a second rectifier bridge V2, the direct current side of the second rectifier bridge V2 comprises two branches, the first branch comprises a coil of a tripping-prevention relay K0, a normally-open auxiliary switch of the vacuum circuit breaker QF1 and normally-open auxiliary switches 3-5 of the tripping-prevention relay K0 which are connected in parallel, the second branch comprises a coil of a closing relay HQ and an energy storage state normally-open auxiliary switch S3 which are connected in series, the normally closed auxiliary switch S5 of the latching relay is connected in parallel with the jumper connection piece JP 8.
The alternating current side of the first rectifier bridge is connected in series with a normally closed contact of a test position travel switch S8, and the normally closed contact S8 of the test position travel switch is connected in parallel with a normally open switch of a working position travel switch S9.
Claims (2)
1. The utility model provides a vacuum circuit breaker's interlock, includes combined floodgate return circuit, shutting return circuit and separating brake return circuit, its characterized in that: the blocking circuit include first rectifier bridge, the direct current side of first rectifier bridge concatenate current-limiting resistance and blocking relay, the combined floodgate return circuit include the second rectifier bridge, the direct current side of second rectifier bridge include two branches, first branch is including the normally open auxiliary switch of vacuum circuit breaker's the normally open auxiliary switch of the coil of preventing the tripping relay and the concatenation with the normally open auxiliary switch of preventing the tripping relay, the second branch is including the normally closed auxiliary switch of the combined floodgate relay that concatenates, energy storage state normally open auxiliary switch, jumper connection piece, vacuum circuit breaker's normally closed auxiliary switch, prevents the normally closed auxiliary switch of tripping relay, the normally open auxiliary switch of blocking relay with jumper connection piece concatenation.
2. The interlock apparatus of a vacuum circuit breaker according to claim 1, wherein: the alternating current side of the first rectifier bridge is connected in series with a normally closed contact of the test position travel switch, and the normally closed contact of the test position travel switch is connected in parallel with a normally open switch of the working position travel switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922208285.9U CN210535573U (en) | 2019-12-09 | 2019-12-09 | Interlocking device of vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922208285.9U CN210535573U (en) | 2019-12-09 | 2019-12-09 | Interlocking device of vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210535573U true CN210535573U (en) | 2020-05-15 |
Family
ID=70609235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922208285.9U Expired - Fee Related CN210535573U (en) | 2019-12-09 | 2019-12-09 | Interlocking device of vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210535573U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114839526A (en) * | 2022-07-01 | 2022-08-02 | 国网辽宁省电力有限公司 | Circuit breaker characteristic test platform |
-
2019
- 2019-12-09 CN CN201922208285.9U patent/CN210535573U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114839526A (en) * | 2022-07-01 | 2022-08-02 | 国网辽宁省电力有限公司 | Circuit breaker characteristic test platform |
| CN114839526B (en) * | 2022-07-01 | 2022-09-09 | 国网辽宁省电力有限公司 | Circuit breaker characteristic test platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20200515 |