CN202816835U - Closing circuit for breaker - Google Patents
Closing circuit for breaker Download PDFInfo
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- CN202816835U CN202816835U CN 201220407116 CN201220407116U CN202816835U CN 202816835 U CN202816835 U CN 202816835U CN 201220407116 CN201220407116 CN 201220407116 CN 201220407116 U CN201220407116 U CN 201220407116U CN 202816835 U CN202816835 U CN 202816835U
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- 238000011982 device technology Methods 0.000 abstract 1
- 230000007774 longterm Effects 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 8
- 238000013024 troubleshooting Methods 0.000 description 8
- 230000005611 electricity Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 101000821981 Homo sapiens Sarcoma antigen 1 Proteins 0.000 description 1
- 102100021466 Sarcoma antigen 1 Human genes 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model relates to the electrical device technology field, particularly to a closing circuit for a breaker. The closing circuit comprises a closing button, closing coils, a time switch arranged between the closing button and the closing coils, and a time-delay controller parallelly connected with the time switch and the closing coils, wherein the time switch is a normally closed contact that is controlled to switch on/off by the time-delay controller; the time-delay controller starts timing after being electrified; and when the time reaches the preset threshold, the time switch is controlled to switch off. With the above embodiment, a fault processing part is added to the conventional breaker closing loop, thereby realizing fault processing at a relatively low cost. To stop the power supply of the closing coils makes it impossible that the closing coils are burnt out due to the long-term conduction.
Description
Technical field
Electric equipment technical field under the utility model relates in particular to a kind of closing circuit of circuit breaker.
Background technology
Circuit breaker is the visual plant in a kind of electric power system, along with the popularizing of Microcomputer Protection, the problem of breaker control circuit and Microcomputer Protection and automation equipment compatibility is constantly come out in recent years.Comparatively commonly because the circuit breaker operation mechanism fault causes the damage such as combined floodgate tripping coil, contactor, controller and protective device to cause maintenance cost and maintenance workload to increase, also safe and reliable power supply is brought impact simultaneously.
It is more that the LW8-35 type circuit breaker CT14 type mechanism closing coil of at present scene use burns out defective, especially easily send out in transmission process, be illustrated in figure 1 as the schematic diagram of closing circuit of circuit breaker in the prior art, wherein, "+", "-" represent the closing circuit electric power polarity, DK is DC power supply switch, HAN is the combined floodgate button, K gathers for comprising the normally closed contacts such as low pressure locking, DL is auxiliary switch for circuit breaker (contact is normally closed), HQ is closing coil, and the main cause of closing coil scaling loss is because the coil electrification time surpasses permissible value, overheated burning out.According to shown in Figure 1, the DC power supply switch of closing DK, press closing by hand button HAN, the closing circuit transient switching, closing coil HQ gets electric, the mechanism of circuit breaker finishes combined floodgate, after combined floodgate was finished, combined floodgate button HAN returned, and the normally closed contact of auxiliary switch for circuit breaker DL disconnects, the closing circuit outage, if but combined floodgate button closing time is long or stick together, the auxiliary switch DL of circuit breaker lost efficacy and switched simultaneously, and then the closing circuit ON time overflows, HQ overflows conduction time, easily causes HQ to burn out defective and occurs.The reason that causes the charged duration of coil to overflow is complicated, there are on the whole operations staff's misoperation, breaker mechanism auxiliary switch to switch the reasons such as bad, the result of these reasons can cause the closing circuit of circuit breaker ON time to overflow, thereby the closing coil electrification time overflows, and finally burns out.
Address the above problem in the prior art and basically all adopt temperature sensor to obtain the temperature of closing coil; judge whether to disconnect the electrical connection of closing coil according to temperature; and this mode cost is higher; and the antijamming capability of sensor components and parts is not very stable a little less than, so that protection was lost efficacy.
The utility model content
In order solving in the prior art breaker closing coil protect cost height to be controlled complicated problem, to have proposed closing circuit of circuit breaker of the present utility model, can effectively reduce monitoring cost.
The utility model embodiment provides a kind of closing circuit of circuit breaker, comprises,
The combined floodgate button, closing coil;
Between described combined floodgate button and closing coil, also comprise a time switch, also be parallel with a delay controller with described clock switch and closing coil;
Wherein said clock switch is the normally closed contact that is subject to delay controller control conducting or disconnection, and described delay controller begins timing after energising, controls described clock switch and disconnect when the time arrives predetermined threshold value.
Further aspect according to the closing circuit of a kind of circuit breaker described in the utility model, also comprise alarm unit, described alarm unit is connected with described delay controller, when the normally closed contact of delay controller switch opening time, sends alarm signal by described alarm unit.
Further aspect according to the closing circuit of a kind of circuit breaker described in the utility model also comprises auxiliary switch, is connected between combined floodgate button and the closing coil, and the normally closed contact of auxiliary switch disconnects after the complete combined floodgate of closing coil.
According to the in addition further aspect of the closing circuit of a kind of circuit breaker described in the utility model, described closing circuit comprises that also the normally closed contact set is connected between auxiliary switch and the combined floodgate button.
According to the in addition further aspect of the closing circuit of a kind of circuit breaker described in the utility model, described clock switch is connected on the series winding loop of auxiliary switch and closing coil.
By above-described embodiment, in existing closing circuit of circuit breaker, added the troubleshooting parts, realized troubleshooting with very low cost, disconnect the power supply of closing coil, so that closing coil can not cause owing to conduction time is long the problem of coil burnout.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, consists of the application's a part, does not consist of restriction of the present utility model.In the accompanying drawings:
Figure 1 shows that the schematic diagram of closing circuit of circuit breaker in the prior art;
The closing circuit structural representation of a kind of circuit breaker that Fig. 2 provides for the utility model embodiment;
Figure 3 shows that the further structural representation of a kind of closing circuit of circuit breaker of the utility model embodiment;
Fig. 4 a is depicted as the connected mode schematic diagram of a kind of delay controller of the utility model;
Fig. 4 b is depicted as the connected mode schematic diagram of the another kind of delay controller of the utility model;
Figure 5 shows that the structural representation of the utility model embodiment delay controller.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment is clearer, below in conjunction with embodiment and accompanying drawing, embodiment is described in further details to the utility model.At this, the utility model be used for is explained in illustrative examples of the present utility model and explanation thereof, but not as to restriction of the present utility model.
The closing circuit structural representation of a kind of circuit breaker that provides for the utility model embodiment such as Fig. 2.
Comprise combined floodgate button 101, closing coil 102;
Between described combined floodgate button 101 and closing coil 102, also comprise a time switch 103, also be parallel with a delay controller 104 at described clock switch 103 and closing coil 102.
Wherein said clock switch 103 is for being subject to the normally closed contact of delay controller 104 control conductings or disconnection, described delay controller 104 begins timing after energising, when the time arrives predetermined threshold value, controlling described clock switch 103 disconnects, clock switch 103 in the parallel circuits because this moment, delay controller 104 disconnected, therefore do not affect the "on" position of this delay controller 104, this delay controller 104 is also in running order, when trouble shooting, this delay controller 104 is controlled described clock switch 103 to described clock switch 103 output control signals and is returned to normally off.
Also comprise alarm unit 105 in the closing circuit of this circuit breaker, described alarm unit 105 is connected with described delay controller 104, when the normally closed contact of delay controller switch 104 opening time 103, send alarm signal by described alarm unit 105, described alarm unit can be notified by modes such as sound, light, electricity and break down in operating personnel's closing circuit, may be the phenomenons such as the long or auxiliary switch for circuit breaker of combined floodgate button closing time does not switch, perhaps can also be by wired or wireless communication unit notice remote equipment.
In described closing circuit, can also comprise auxiliary switch 106, be connected between combined floodgate button 101 and the closing coil 102 that the normally closed contact of auxiliary switch 106 disconnects after closing coil 102 complete combined floodgates.
Described auxiliary switch 106 can be connected between clock switch 103 and the closing coil 102, perhaps is connected between clock switch 103 and the combined floodgate button 101.
Described closing circuit comprises that also normally closed contact set 107 is connected between auxiliary switch 106 and the combined floodgate button 101.
By above-described embodiment, in existing closing circuit of circuit breaker, added the troubleshooting parts, realized troubleshooting with very low cost, disconnect the power supply of closing coil, so that closing coil can not cause owing to conduction time is long the problem of coil burnout.
Be illustrated in figure 3 as the further structural representation of a kind of closing circuit of circuit breaker of the utility model embodiment.
Comprise DC power supply switch 201, combined floodgate button 202, clock switch 203, normally closed contact set 204, auxiliary switch 205, closing coil 206, delay controller 207.
In the present embodiment, clock switch 203, normally closed contact set 204, auxiliary switch 205, closing coil 206 be series relationship, and described delay controller 207 and clock switch 203, normally closed contact gather 204, auxiliary switch 205, closing coil 206 are in parallel.
Wherein, clock switch 203 is normally closed contact, and the control that is subject to delay controller 207 can folding.
When dc switch 201 is connected, closing circuit of circuit breaker just can be according to user's purpose work, and when operating personnel press combined floodgate button 202, closing circuit is by the normally closed contact transient switching of clock switch 203, closing coil 206 gets electric, and the mechanism of circuit breaker finishes feed motion.When the closing circuit conducting, with clock switch 203, normally closed contact set 204, auxiliary switch 205, the delay controller 207 of closing coil 206 parallel connections also electric work, this delay controller 207 can comprise the timer of a countdown, perhaps also can be common timer, when predetermined threshold value is arrived in the timer timing, for example 2 seconds, then control switch 203 normally closed contact opening time, this is because after the closing circuit conducting, if combined floodgate button 202 and auxiliary switch 205 can't disconnect if there is fault, then closing coil 206 will cause owing to conduction time is long and burn, in the present embodiment when closing circuit reaches 2 seconds conduction time, just think it to be that combined floodgate button 202 and auxiliary switch 205 break down, by switch 203 normally closed contact opening time, then can be so that closing circuit disconnect, closing coil 206 loses power supply, thereby can realize preventing that closing coil 206 long-time energisings from causing the problem of burning.
After the described clock switch 203 of delay controller 207 controls disconnects normally closed contact, because combined floodgate button 202 also is in malfunction, may be to bond or can't rebound, then be in conducting state at combined floodgate button 202 places always, and delay controller 207 and clock switch 203, normally closed contact set 204, auxiliary switch 205, closing coil 206 parallel connections, clock switch 203 above this moment, normally closed contact set 204, auxiliary switch 205, the series circuit that closing coil 206 consists of disconnects, but delay controller 207 can also keep power supply, this delay controller 207 can pass through the LED lamp, buzzer, perhaps send alarm signal by communication module to far-end, break down with prompting operation person's closing circuit, when trouble shooting, described delay controller 207 can also reset clock switch 203, so that the contact of clock switch 203 returns to normally off, certainly, the recovery of this clock switch 203 can use the means such as spring retainer common in the prior art to realize control, also can be artificial reparation.
In other embodiments, the connected mode of delay controller 207 can also be shown in Fig. 4 a, delay controller 207 is in parallel with the series circuit that clock switch 203 and closing coil consist of, when combined floodgate button 202 and auxiliary switch 205 break down, delay controller 207 is by the connection of timer switch opening time 203, so that closing coil 206 dead electricity.
Perhaps can also be depicted as such as Fig. 4 b the example structure figure of another kind of breaker closing circuit, clock switch 203 is connected between auxiliary switch 205 and the closing coil 206, when combined floodgate button 202 and auxiliary switch 205 fault, 207 control time of delay controller switch 203 disconnects, so that closing coil 206 dead electricity.
Be illustrated in figure 5 as the structural representation of the utility model embodiment delay controller, comprising normally closed contact 1,2, normal opened contact 3,4, power supply contact 5,6, actuation coil 501, transmission mechanism 502, timer 503, described power supply contact 5,6 must be electric after the closing circuit conducting, actuation coil 501 is getting the electric rear transmission mechanism 502 startup timers 503 that pass through, and timer 503 beginning timing are when the clock pointer of described timer 503 moves to the precalculated position, connect the contact in precalculated position, this moment normally closed contact 1,2 disconnect normal opened contact 3,4 closures, closing circuit disconnects, the closing coil dead electricity, thus the closing coil long superheating phenomenon that causes conduction time can be protected; After the closing coil dead electricity, described actuation coil 501 returns, and automatically resets by the clock pointer of transmission mechanism 502 with timer 503, and normally closed contact 1,2 recovers normally offs at this moment, and described normal opened contact 3,4 recovers normally opens.In the utility model, do not limit the concrete structure of delay controller and clock switch, in the above-described embodiments, timer also can adopt the mode of electronic timer, and corresponding logic is judged chip, when timing during to the scheduled time, change normally closed contact 1,2 and normal opened contact 3,4 state.
By the utility model embodiment, the troubleshooting parts in existing closing circuit of circuit breaker, have been added, realize troubleshooting with very low cost, disconnected the power supply of closing coil, so that closing coil can not cause owing to conduction time is long the problem of coil burnout.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; and be not used in and limit protection range of the present utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. the closing circuit of a circuit breaker is characterized in that comprising,
The combined floodgate button, closing coil;
Between described combined floodgate button and closing coil, also comprise a time switch, also be parallel with a delay controller with described clock switch and closing coil;
Wherein said clock switch is the normally closed contact that is subject to delay controller control conducting or disconnection, and described delay controller begins timing after energising, controls described clock switch and disconnect when the time arrives predetermined threshold value.
2. the closing circuit of a kind of circuit breaker according to claim 1, it is characterized in that, also comprise alarm unit, described alarm unit is connected with described delay controller, when the normally closed contact of delay controller switch opening time, send alarm signal by described alarm unit.
3. the closing circuit of a kind of circuit breaker according to claim 1 is characterized in that, also comprises the auxiliary switch of circuit breaker, is connected between combined floodgate button and the closing coil, and the normally closed contact of auxiliary switch disconnects after the complete combined floodgate of closing coil.
4. the closing circuit of a kind of circuit breaker according to claim 1 is characterized in that, described closing circuit comprises that also the normally closed contact set is connected between auxiliary switch and the combined floodgate button.
5. the closing circuit of a kind of circuit breaker according to claim 3 is characterized in that, described clock switch is connected between auxiliary switch and the closing coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407116 CN202816835U (en) | 2012-08-16 | 2012-08-16 | Closing circuit for breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407116 CN202816835U (en) | 2012-08-16 | 2012-08-16 | Closing circuit for breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202816835U true CN202816835U (en) | 2013-03-20 |
Family
ID=47875678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220407116 Expired - Fee Related CN202816835U (en) | 2012-08-16 | 2012-08-16 | Closing circuit for breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202816835U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106057595A (en) * | 2016-07-21 | 2016-10-26 | 华自科技股份有限公司 | Power switch device of breaker exit circuit |
| CN106158443A (en) * | 2016-08-03 | 2016-11-23 | 国网山西省电力公司大同供电公司 | The control device of a kind of switching on chopper and control method |
-
2012
- 2012-08-16 CN CN 201220407116 patent/CN202816835U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106057595A (en) * | 2016-07-21 | 2016-10-26 | 华自科技股份有限公司 | Power switch device of breaker exit circuit |
| CN106057595B (en) * | 2016-07-21 | 2018-09-11 | 华自科技股份有限公司 | The power switch device of breaker outlet loop |
| CN106158443A (en) * | 2016-08-03 | 2016-11-23 | 国网山西省电力公司大同供电公司 | The control device of a kind of switching on chopper and control method |
| CN106158443B (en) * | 2016-08-03 | 2018-01-30 | 国网山西省电力公司大同供电公司 | A kind of control device and control method of switching on breaker |
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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: 20130320 Termination date: 20190816 |
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| CF01 | Termination of patent right due to non-payment of annual fee |