CN207753444U - A kind of device for taking precautions against VD4 vacuum circuit breaker Burnout of Closing Coil - Google Patents
A kind of device for taking precautions against VD4 vacuum circuit breaker Burnout of Closing Coil Download PDFInfo
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- CN207753444U CN207753444U CN201721383405.3U CN201721383405U CN207753444U CN 207753444 U CN207753444 U CN 207753444U CN 201721383405 U CN201721383405 U CN 201721383405U CN 207753444 U CN207753444 U CN 207753444U
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Abstract
The utility model is related to control loop fields, more particularly to a kind of device for taking precautions against VD4 vacuum circuit breaker Burnout of Closing Coil, including reclosing instruction CHJ, closing by hand instruction SHJ, distant place reclosing command YHJ, combined floodgate guard relay HBJ, breaker auxiliary contact DL1, closing coil HQ and time relay sj 1, it is connected in series with combined floodgate guard relay HBJ after the reclosing instruction CHJ, closing by hand instruction SHJ and distant place reclosing command YHJ parallel connections, combined floodgate guard relay HBJ is connected in series with breaker auxiliary contact DL1, closing coil HQ；The coil of time-delay relay is in parallel with open circuit closing coil HQ, and the contact series of time-delay relay are between DL1 and coil HQ.The utility model has the advantage of：It can effectively prevent VD4 type vacuum circuit breaker Burnout of Closing Coil.Practicability is high, transformation is simple, provides guarantee to prevent Burnout of Closing Coil and improving overhaul efficiency, has certain promotional value and realistic meaning.
Description
Technical field
The utility model is related to control loop field more particularly to a kind of strick precaution VD4 vacuum circuit breaker Burnout of Closing Coil
Device.
Background technology
In recent years during riverhead power plant VD4 types vacuum circuit breaker breaking-closing operating, there is showing for divide-shut brake coil burnout
As in rising trend.After Burnout of Closing Coil, breaker does not close, and leads to the equipment evening power transmission such as motor, transformer, influences electricity
The normal production of factory.Switching winding, which is burnt, can cause breaker inseparable, need operations staff to be operated to on-site manual, not only shadow
Ring working efficiency, in some instances it may even be possible to expand accident range and cause more serious loss.
Fig. 1 is the VD4 type vacuum circuit breaker shutting-brake control loops of our factory, and CHJ attaches most importance to reclosing command, and SHJ is closing by hand
Instruction, YHJ are distant place reclosing command, and HBJ is combined floodgate guard relay, and DL1 is breaker auxiliary contact, and HQ is closing coil,
Its operation principle is as follows：After reclosing command is sent out, combined floodgate guard relay HBJ excitations, normal opened contact HBJ, which is closed, to be realized certainly
It keeps, keeps closing circuit constantly on, breaker, which is realized, to close a floodgate.
The reason for causing Burnout of Closing Coil common has following several：
(1) breaker mechanism failure.If mechanism body bite or mismate, even if closing circuit is intact but mechanical latching
It does not unlock, can still result in breaker closing failure, closing iron core overload causes Burnout of Closing Coil.
(2) breaker trip position is not in place.After normal combined floodgate, breaker normally closed contact DL1 disconnects cut-out closing circuit,
If the contact is not opened or arcing, closing contactor continues excitation by reclosure loop reform, and closing coil is long charged and burns
It ruins.
(3) control device failure is protected.If the closing relay for sending out the protection control device of reclosing command is faulty, such as
Contact adhesion causes reclosing command that cannot exit in time, keeps closing coil long charged and burns.
(4) power switch capacity declines or closing circuit resistance is bigger than normal, so that combined floodgate moment coil both end voltage is not achieved dynamic
Work value causes coil long charged and burns.
(5) in the electromagnetic operating mechanism with closing contactor, if closing contactor breaks down, cannot break in time
It opens, closing contactor coil burnout can be caused, it is too long and burn to also result in closing coil conduction time.
Utility model content
The technical issues of the utility model solves is, in the prior art during VD4 types vacuum circuit breaker breaking-closing operating,
The phenomenon that divide-shut brake coil burnout occur is in rising trend.After Burnout of Closing Coil, breaker does not close, and leads to motor, becomes
The equipment evening power transmission such as depressor, influences the normal production of power plant.Switching winding, which is burnt, can cause breaker inseparable, need to run people
Member operates to on-site manual, not only influences working efficiency, in some instances it may even be possible to expand accident range and cause more serious loss.
To solve the above problems, we have proposed a kind of device for taking precautions against VD4 vacuum circuit breaker Burnout of Closing Coil, it can be with
It effectively prevent VD4 type vacuum circuit breaker Burnout of Closing Coil.Practicability is high, transformation is simple, to prevent Burnout of Closing Coil and carrying
High overhaul efficiency provides guarantee, has certain promotional value and realistic meaning.
To realize that the demand, the utility model are achieved through the following technical solutions above-mentioned purpose：A kind of strick precaution VD4 is true
The device of empty breaker closing coil burnout, including reclosing instruction CHJ, closing by hand instruction SHJ, distant place reclosing command YHJ,
Combined floodgate guard relay HBJ, breaker auxiliary contact DL1, closing coil HQ and time relay sj 1, the reclosing instruction
CHJ, closing by hand instruction SHJ and distant place reclosing command YHJ are connected with combined floodgate guard relay HBJ, combined floodgate guard relay
HBJ is connected in series with breaker auxiliary contact DL1, closing coil HQ；The coil of time-delay relay and breaking closing coil HQ are simultaneously
Connection, the contact series of time-delay relay are between DL1 and coil HQ.
Further, a kind of device for taking precautions against VD4 vacuum circuit breaker Burnout of Closing Coil, the combined floodgate guard relay
HBJ is 5 foot relays.
Further, it is a kind of take precautions against VD4 vacuum circuit breaker Burnout of Closing Coil device, it is described between relay SJ1 when
Between adjustable extent be 0.1s-99h.
Further, a kind of device for taking precautions against VD4 vacuum circuit breaker Burnout of Closing Coil, the closing coil HQ are 220V
Electromagnet for controlling switch, resistance be 80 Ω ± 5%, 20 DEG C.
Further, a kind of device for taking precautions against VD4 vacuum circuit breaker Burnout of Closing Coil, the device are wholy set in control
In babinet, heat emission hole is provided on control cabinet.
A kind of device for taking precautions against VD4 vacuum circuit breaker Burnout of Closing Coil provided by the utility model, to prevent closing line
Circle HQ is long charged and burns, and certain change and innovation have been done to VD4 type vacuum circuit breaker shutting-brake control loops.It improves
Closing circuit of circuit breaker afterwards is as shown in Fig. 2, following is technical step analysis：
(1) under normal circumstances, after breaker closing instruction is sent out, closing coil HQ is encouraged simultaneously with time relay sj 1
Magnetic, breaker closing.
(2) there are abnormal conditions, when not disconnected reliably such as auxiliary contact DL1, the normally closed of time relay delayed start-up connects
Point SJ1 is disconnected, and cuts off closing circuit of circuit breaker, closing coil HQ dead electricity.
(3) monitoring system report " control loop template " is reminded operations staff to come to check, and is done further by service personnel
Processing.
It is to be noted that the time setting of the time relay should consider VD4 vacuum circuit breakers characteristic, protective device
And the requirement of reclosing device, if setting valve may make breaker complete to close too close to the closing time of breaker
Closing circuit has been disconnected before lock；If setting valve is too big, can not ensure that closing circuit can be cut off under mechanism abnormal conditions in time.
The beneficial effects of the utility model are：It can effectively prevent VD4 type vacuum circuit breaker Burnout of Closing Coil.It is practical
Property it is high, transformation is simple, and guarantees is provided to prevent Burnout of Closing Coil and improving overhaul efficiency, have certain promotional value with
Realistic meaning.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described.It is clear that the accompanying drawings in the following description is this reality
Without creative efforts, may be used also for those of ordinary skill in the art with some novel embodiments
With obtain other attached drawings according to these attached drawings.
Fig. 1 is closing circuit of circuit breaker schematic diagram in the prior art；
Fig. 2 is the utility model closing circuit of circuit breaker schematic diagram.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described.Obviously, it is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Embodiment 1:
A kind of device for taking precautions against VD4 vacuum circuit breaker Burnout of Closing Coil, including reclosing instruction CHJ, closing by hand refer to
Enable SHJ, distant place reclosing command YHJ, combined floodgate guard relay HBJ, breaker auxiliary contact DL1, closing coil HQ and time after
Electric appliance SJ1, the reclosing instruction CHJ, closing by hand instruct SHJ and distant place reclosing command YHJ and combined floodgate guard relay HBJ
It is connected, combined floodgate guard relay HBJ is connected in series with breaker auxiliary contact DL1, closing coil HQ；The line of time-delay relay
Circle is in parallel with open circuit closing coil HQ, and the contact series of time-delay relay are between DL1 and coil HQ.
The combined floodgate guard relay HBJ is 5 foot relays.
The time adjustable extent of described relay SJ1 is 0.1s-99h.
The closing coil HQ be 220V electromagnet for controlling switch, resistance be 80 Ω ± 5%, 20 DEG C.
The device is wholy set in control cabinet body, and heat emission hole is provided on control cabinet.
A kind of device for taking precautions against VD4 vacuum circuit breaker Burnout of Closing Coil provided in this embodiment, to prevent closing coil
HQ is long charged and burns, and certain change and innovation have been done to VD4 type vacuum circuit breaker shutting-brake control loops.It is improved
Closing circuit of circuit breaker is as shown in Fig. 2, following is technical step analysis：
(1) under normal circumstances, after breaker closing instruction is sent out, closing coil HQ is encouraged simultaneously with time relay sj 1
Magnetic, breaker closing.
(2) there are abnormal conditions, when not disconnected reliably such as auxiliary contact DL1, the normally closed of time relay delayed start-up connects
Point SJ1 is disconnected, and cuts off closing circuit of circuit breaker, closing coil HQ dead electricity.
(3) monitoring system report " control loop template " is reminded operations staff to come to check, and is done further by service personnel
Processing.
It is to be noted that the time setting of the time relay should consider VD4 vacuum circuit breakers characteristic, protective device
And the requirement of reclosing device, if setting valve may make breaker complete to close too close to the closing time of breaker
Closing circuit has been disconnected before lock；If setting valve is too big, can not ensure that closing circuit can be cut off under mechanism abnormal conditions in time.
The advantageous effect of the present embodiment is：It can effectively prevent VD4 type vacuum circuit breaker Burnout of Closing Coil.Practicability
Height, transformation simply, to prevent Burnout of Closing Coil and improving overhaul efficiency provide guarantee, with certain promotional value and now
Sincere justice.
Claims (5)
1. a kind of device for taking precautions against VD4 vacuum circuit breaker Burnout of Closing Coil, it is characterised in that：Including reclosing instruction CHJ, hand
Dynamic reclosing command SHJ, distant place reclosing command YHJ, combined floodgate guard relay HBJ, breaker auxiliary contact DL1, closing coil HQ
With time relay sj 1, the reclosing instruction CHJ, closing by hand instruction SHJ and distant place reclosing command YHJ and holding of closing a floodgate
Relay HBJ is connected, and combined floodgate guard relay HBJ is connected in series with breaker auxiliary contact DL1, closing coil HQ；Delay
The coil of relay is in parallel with open circuit closing coil HQ, and the contact series of time-delay relay are between DL1 and coil HQ.
2. taking precautions against the device of VD4 vacuum circuit breaker Burnout of Closing Coil as described in claim 1, it is characterised in that：The conjunction
Lock guard relay HBJ is 5 foot relays.
3. taking precautions against the device of VD4 vacuum circuit breaker Burnout of Closing Coil as described in claim 1, it is characterised in that：Described
The time adjustable extent of relay SJ1 is 0.1s-99h.
4. taking precautions against the device of VD4 vacuum circuit breaker Burnout of Closing Coil as described in claim 1, it is characterised in that：The conjunction
Brake cable circle HQ is 220V electromagnet for controlling switch, and resistance is 80 Ω ± 5% under the conditions of 20 DEG C.
5. taking precautions against the device of VD4 vacuum circuit breaker Burnout of Closing Coil as described in claim 1, it is characterised in that：The device
It is wholy set in control cabinet body, heat emission hole is provided on control cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721383405.3U CN207753444U (en) | 2017-10-25 | 2017-10-25 | A kind of device for taking precautions against VD4 vacuum circuit breaker Burnout of Closing Coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721383405.3U CN207753444U (en) | 2017-10-25 | 2017-10-25 | A kind of device for taking precautions against VD4 vacuum circuit breaker Burnout of Closing Coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207753444U true CN207753444U (en) | 2018-08-21 |
Family
ID=63145548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721383405.3U Active CN207753444U (en) | 2017-10-25 | 2017-10-25 | A kind of device for taking precautions against VD4 vacuum circuit breaker Burnout of Closing Coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207753444U (en) |
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2017
- 2017-10-25 CN CN201721383405.3U patent/CN207753444U/en active Active
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