CN217444284U - 35kV vacuum circuit breaker structure for reducing fault rate of opening and closing coil - Google Patents
35kV vacuum circuit breaker structure for reducing fault rate of opening and closing coil Download PDFInfo
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- CN217444284U CN217444284U CN202122944988.5U CN202122944988U CN217444284U CN 217444284 U CN217444284 U CN 217444284U CN 202122944988 U CN202122944988 U CN 202122944988U CN 217444284 U CN217444284 U CN 217444284U
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Abstract
The utility model discloses a reduce 35kV vacuum circuit breaker structure of divide-shut brake coil fault rate relates to vacuum circuit breaker technical field. The vacuum circuit breaker comprises a vacuum circuit breaker case and a fault reducing mechanism, wherein a case door is hinged to the surface of the vacuum circuit breaker case, the fault reducing mechanism comprises an intermediate relay and a time relay, a terminal bar is fixedly connected in the vacuum circuit breaker case, the intermediate relay and the time relay are both fixedly connected with the terminal bar, the intermediate relay and the time relay are both electromagnetic, the time relay is set to be 2.5s, the vacuum circuit breaker case also comprises a circuit breaker auxiliary contact-1, a circuit breaker auxiliary contact-2, a plurality of opening coils and a plurality of closing coils, the fault rate of the opening and closing coils is effectively reduced, the power loss and the casualty accidents caused by the fact that electrical faults cannot be timely cut off are reduced, and the power supply reliability and the personal safety of a power grid are improved.
Description
Technical Field
The utility model relates to a vacuum circuit breaker technical field especially relates to a reduce 35kV vacuum circuit breaker structure of divide-shut brake coil fault rate.
Background
The delayed power transmission has great influence on users, and a large amount of load is lost in a power grid. If the circuit breaker refuses to separate due to the coil fault, override tripping can be caused, large-area power failure can be caused in serious conditions, and meanwhile, the safety and the reliability of the whole power system are also greatly damaged. The power failure condition caused by the fault of the circuit breaker opening and closing coil occurs occasionally all the year round, the safe reliability of power supply is greatly reduced, and therefore the reduction of the fault rate of the circuit breaker opening and closing coil is a practical problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a reduce 35kV vacuum circuit breaker structure of divide-shut brake coil fault rate, solved the above-mentioned technical problem.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a reduce 35kV vacuum circuit breaker structure of divide-shut brake coil fault rate, includes vacuum circuit breaker machine case and trouble reduction mechanism, vacuum circuit breaker machine case surface hinge connection has the chamber door.
Preferably, the failure reduction mechanism includes an intermediate relay and a time relay.
Preferably, the vacuum circuit breaker case is internally and fixedly connected with a terminal strip, and the intermediate relay and the time relay are fixedly connected with the terminal strip.
Preferably, the intermediate relay and the time relay are both electromagnetic.
Preferably, the time relay is set to 2.5 s.
Preferably, the vacuum circuit breaker case further comprises a circuit breaker auxiliary contact-1, a circuit breaker auxiliary contact-2, a plurality of opening coils and a plurality of closing coils.
Preferably, the opening coil is connected with the auxiliary contact-1 of the circuit breaker through an intermediate relay, the closing coil is connected with the auxiliary contact-2 of the circuit breaker through an intermediate relay, the opening coil and the closing coil are both connected with an alternating current contactor, the circuit breaker auxiliary contact-1 line and the circuit breaker auxiliary contact-2 are in circuit connection with the intermediate relay and a time relay, wherein the intermediate relay is additionally in circuit connection with a time relay as a switch, and the time relay and the intermediate relay are both in circuit connection with the alternating current contactor.
Compared with the prior art, the utility model provides a pair of reduce 35kV vacuum circuit breaker structure of divide-shut brake coil fault rate has following beneficial effect:
the utility model provides a reduce 35kV vacuum circuit breaker structure of divide-shut brake coil fault rate promotes the horizontal promotion of on-the-spot safety control greatly, has set up a clear safe operation environment, and the electric power loss and the casualties accident that cause can not in time be amputated in the deduction and exemption emergence electrical fault have improved electric wire netting power supply reliability and personal safety.
Drawings
Fig. 1 is a schematic structural diagram of a vacuum circuit breaker case of the present invention;
fig. 2 is an electrical wiring diagram of the present invention.
In the figure: 1. the vacuum circuit breaker comprises a vacuum circuit breaker cabinet, 2, an intermediate relay, 3, a time relay, 4 and a cabinet door.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example (b):
referring to fig. 1-2, the utility model provides a technical solution, comprising a vacuum circuit breaker case 1 and a fault reducing mechanism, wherein a case door 4 is hinged on the surface of the vacuum circuit breaker case 1, the fault reducing mechanism comprises an intermediate relay 2 and a time relay 3, a terminal row is fixedly connected in the vacuum circuit breaker case 1, the intermediate relay 2 and the time relay 3 are both fixedly connected with the terminal row, the intermediate relay 2 and the time relay 3 are preferably electromagnetic, the time relay 3 is set to be 2.5s, the vacuum circuit breaker case 1 further comprises a circuit breaker auxiliary contact-1, a circuit breaker auxiliary contact-2, a plurality of switching-off coils and a plurality of switching-on coils, the switching-off coils are connected with the circuit breaker auxiliary contact-1 through the intermediate relay 2, the switching-on coils are connected with the circuit breaker auxiliary contact-2 through the intermediate relay 2, the opening coil and the closing coil are both connected with an alternating current contactor, a circuit breaker auxiliary contact-1 line and a circuit breaker auxiliary contact-2 circuit are connected with an intermediate relay 2 and a time relay 3, wherein the intermediate relay 2 is additionally connected with a time relay 3 as a switch in a circuit mode, and the time relay 3 and the intermediate relay 2 are both connected with the alternating current contactor in a circuit mode.
In this embodiment: in the circuit diagram, ZJ is an intermediate relay 2, DL is an auxiliary contact of a circuit breaker, TQ is a brake separating coil, HQ is a brake closing coil, SJ is a time relay, and KM is an alternating current contactor.
In order to better understand the technical scheme of the invention, the following combined experiments further illustrate.
Experiment one
The test duration is as follows: set to 4 s;
the test flow comprises the following steps: and when the relay acts for 2.5S, the node is closed, the intermediate relay acts to open the normally closed contact, the power supply of the coil is cut off, and the coil is automatically cut off by the protection device after being electrified for 2.5S.
Half year of use, comparison before and after the test data, specific test data, see the following table:
the test result is correct and accords with the expected effect;
through experimental comparison data, the average fault rate of the opening and closing coils is obviously reduced from 6.17% to 0%, the fault frequency of the opening and closing coils is zero, the improvement of the field safety management level is greatly promoted, a clear and safe operation environment is created, the power loss and casualty accidents caused by the fact that electrical faults cannot be timely removed are reduced, and the power supply reliability and the personal safety of a power grid are improved.
Experiment two
On the basis of experiment one, the utility model provides a technical scheme: the intermediate relay 2 and the time relay 3 are both electromagnetic.
In this embodiment: in order to better understand the technical scheme, the types of the intermediate relay 2 and the time relay 3 are selected and compared in combination with experiments;
therefore, the electromagnetic intermediate relay 2 is simple in arrangement, convenient to adjust, low in cost, accurate, simple to install and capable of meeting the requirements of the scheme; the electromagnetic time relay 3 is adopted, so that the volume is small, the installation is convenient, the reliability is high, the capacity is large, the cost is low, and the scheme requirements are met.
Claims (7)
1. The utility model provides a reduce 35kV vacuum circuit breaker structure of divide-shut brake coil fault rate which characterized in that: the device comprises a vacuum circuit breaker case (1) and a fault reduction mechanism, wherein a case door (4) is hinged to the surface of the vacuum circuit breaker case (1).
2. The 35kV vacuum circuit breaker structure for reducing the failure rate of the opening and closing coils according to claim 1, characterized in that: the fault reduction mechanism comprises an intermediate relay (2) and a time relay (3).
3. The 35kV vacuum circuit breaker structure for reducing the failure rate of the opening and closing coils according to claim 2, characterized in that: the vacuum circuit breaker is characterized in that a terminal bar is fixedly connected in the vacuum circuit breaker case (1), and the intermediate relay (2) and the time relay (3) are fixedly connected with the terminal bar.
4. The 35kV vacuum circuit breaker structure for reducing the failure rate of the opening and closing coils according to claim 3, characterized in that: the intermediate relay (2) and the time relay (3) are both electromagnetic.
5. The 35kV vacuum circuit breaker structure for reducing the failure rate of the opening and closing coils according to claim 4, characterized in that: the time relay (3) is set to 2.5 s.
6. The 35kV vacuum circuit breaker structure for reducing the failure rate of the opening and closing coils according to claim 5, characterized in that: the vacuum circuit breaker case (1) is characterized by further comprising a circuit breaker auxiliary contact-1, a circuit breaker auxiliary contact-2, a plurality of opening coils and a plurality of closing coils.
7. The 35kV vacuum circuit breaker structure for reducing the failure rate of the opening and closing coils according to claim 6, characterized in that: the separating brake coil is connected through auxiliary relay (2) for the circuit breaker-1, the closing coil is connected through auxiliary relay (2) for the circuit breaker-2, the separating brake coil with closing coil all connects ac contactor, auxiliary contact-1 circuit for the circuit breaker with auxiliary contact-2 circuit connection auxiliary relay (2) and time relay (3), wherein, auxiliary relay (2) extra circuit connection time relay (3) are as the switch, time relay (3) and the equal circuit connection ac contactor of intermediate relay (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122944988.5U CN217444284U (en) | 2021-11-26 | 2021-11-26 | 35kV vacuum circuit breaker structure for reducing fault rate of opening and closing coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122944988.5U CN217444284U (en) | 2021-11-26 | 2021-11-26 | 35kV vacuum circuit breaker structure for reducing fault rate of opening and closing coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217444284U true CN217444284U (en) | 2022-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122944988.5U Active CN217444284U (en) | 2021-11-26 | 2021-11-26 | 35kV vacuum circuit breaker structure for reducing fault rate of opening and closing coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217444284U (en) |
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2021
- 2021-11-26 CN CN202122944988.5U patent/CN217444284U/en active Active
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