CN216054477U

CN216054477U - A vacuum circuit breaker open brake control circuit for on colliery

Info

Publication number: CN216054477U
Application number: CN202023157140.XU
Authority: CN
Inventors: 杨杰
Original assignee: Huaibei Mining Co Ltd
Current assignee: Huaibei Mining Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-03-15
Anticipated expiration: 2031-09-30

Abstract

The utility model discloses a brake-separating control circuit of a vacuum circuit breaker for a coal mine, which comprises a monitoring module, an alarm module and a load module, wherein the alarm module is connected with the load module in series; by adopting the scheme of the utility model, the safety benefit is as follows: after improvement, once the tripping circuit is disconnected, the circuit can accurately and timely give an alarm, so that the problem that the circuit breaker cannot reliably trip in case of accident tripping is avoided, the safety and reliability of the circuit breaker are ensured, and the circuit breaker is applied to a plurality of power supply control circuits, plays a remarkable safety protection effect and fully embodies the safety protection effect of the circuit breaker; economic benefits are as follows: after the application, compared with the prior art, the loss caused by a plurality of accidents is effectively avoided, the damage of accessories is correspondingly reduced, and the loss can be reduced by more than 8 ten thousand yuan per year when the application is carried out at 4 and 5 places.

Description

A vacuum circuit breaker open brake control circuit for on colliery

Technical Field

The utility model belongs to the field of coal mining, and particularly relates to a switching-off control circuit of a vacuum circuit breaker for a coal mine.

Background

In the control circuit of the coal mine power supply incoming line and bus segmented circuit breaker, in order to ensure the completeness of a tripping circuit of the circuit breaker, a switching-on position relay KCC (or a tripping circuit monitoring relay) is generally arranged, once the tripping circuit is disconnected, an alarm can be given in time, and the situation that the circuit breaker cannot reliably trip when in accident tripping is avoided, so that the safety of the circuit breaker is ensured.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a brake-opening control circuit of a vacuum circuit breaker for a coal mine, which can alarm before and after the brake is closed.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a vacuum circuit breaker separating brake control circuit for on colliery, includes monitoring module, alarm module and load module, wherein, alarm module and load module series connection, and the series branch of alarm module and load module is connected in parallel with between the branch road that monitoring module is located, and the parallel connection between monitoring branch road and the alarm branch road.

The utility model discloses a vacuum circuit breaker opening control circuit used on a coal mine, wherein an alarm module comprises a tripping circuit relay KCC, a first circuit breaker auxiliary contact QF1, a second circuit breaker auxiliary contact QF2, a change-over switch SA and a diode VD, wherein a series branch of the change-over switch SA and the first circuit breaker auxiliary contact QF1 is connected in parallel with a series branch of the tripping circuit relay KCC and the second circuit breaker auxiliary contact QF2, and a series branch of the change-over switch SA and the first circuit breaker auxiliary contact QF1 is connected in series with a series branch of the tripping circuit relay KCC and the second circuit breaker auxiliary contact QF2 and a load module.

The utility model discloses a switching-off control circuit of a vacuum circuit breaker used on a coal mine, wherein one end of a diode VD is connected with a lead between a transfer switch SA and a first breaker auxiliary contact QF1, and the other end of the diode VD is connected with a lead between a tripping circuit relay KCC and a second breaker auxiliary contact QF2 (the VD needs to select a diode with high reverse voltage and large rated current).

The utility model discloses a brake-separating control circuit of a vacuum circuit breaker for a coal mine, wherein a load module comprises a coil YT, and the type of the coil YT is MZS-25.

The utility model discloses a vacuum circuit breaker opening control circuit used in a coal mine, wherein a monitoring module comprises a power supply monitoring relay KT, and the power supply monitoring relay KT adopts a relay with a model of DZB-12B (in order to prevent false alarm caused by control power supply disappearance, a relay KT with a power supply monitoring function can be added on the side of a control power supply).

By adopting the scheme of the utility model, the safety benefit is as follows: after improvement, once the tripping circuit is disconnected, the circuit can accurately and timely give an alarm, so that the problem that the circuit breaker cannot reliably trip in case of accident tripping is avoided, the safety and reliability of the circuit breaker are ensured, and the circuit breaker is applied to a plurality of power supply control circuits, plays a remarkable safety protection effect and fully embodies the safety protection effect of the circuit breaker; economic benefits are as follows: after the application, compared with the prior art, the loss caused by a plurality of accidents is effectively avoided, the damage of accessories is correspondingly reduced, and the loss can be reduced by more than 8 ten thousand yuan per year when the application is carried out at 4 and 5 places.

The utility model will be explained in more detail below with reference to the drawings and examples.

Drawings

The contents of the description and the references in the drawings are briefly described as follows:

FIG. 1 is a schematic view of the present invention;

Detailed Description

The following description of the embodiments of the present invention, with reference to the accompanying drawings, will be made in further detail to explain embodiments of the present invention, such as the shapes, structures, mutual positions and connection relationships of the components, the functions and working principles of the components, the manufacturing process, and the operation and use method, so as to help those skilled in the art to more completely, accurately and deeply understand the concept and technical solutions of the present invention.

FIG. 1 is a schematic view of the present invention; the brake-separating control circuit of the vacuum circuit breaker used for the coal mine as shown in the figure 1 comprises a monitoring module, an alarm module and a load module, wherein the alarm module is connected with the load module in series; the alarm module comprises a tripping circuit relay KCC, a first breaker auxiliary contact QF1, a second breaker auxiliary contact QF2, a change-over switch SA and a diode VD, wherein a series branch of the change-over switch SA and the first breaker auxiliary contact QF1 is connected in parallel with a series branch of the tripping circuit relay KCC and the second breaker auxiliary contact QF2, and a series branch of the change-over switch SA and the first breaker auxiliary contact QF1 is connected in series with a series branch of the tripping circuit relay KCC and the second breaker auxiliary contact QF2 and a load module; one end of a diode VD is connected with a wire between the transfer switch SA and the first breaker auxiliary contact QF1, and the other end of the diode VD is connected with a wire between the trip circuit relay KCC and the second breaker auxiliary contact QF 2; the load module comprises a coil YT, and the model of the coil YT is MZS-25; the monitoring module comprises a power supply monitoring relay KT, and the power supply monitoring relay KT adopts a relay of a model DZB-12B.

The KCC is connected in series through QF2 and YT when the circuit breaker is in a tripped state. Because the resistance of KCC is about 10k omega usually, and the resistance of YT is 100-200 omega, so the most of the power voltage is applied to the two ends of KCC, YT can not move; when the YT loop is disconnected, the KCC normally closed contact returns due to disappearance of voltage at two ends of KCC, and an alarm signal is sent; when the circuit breaker is in a closing state, KCC is connected in series through VD, QF1 and YT, and the same function can be completed.

The utility model has been described above with reference to the accompanying drawings, it is obvious that the utility model is not limited to the specific implementation in the above-described manner, and it is within the scope of the utility model to apply the inventive concept and solution to other applications without substantial modification.

Claims

1. The utility model provides a vacuum circuit breaker open brake control circuit for on colliery which characterized in that: the monitoring system comprises a monitoring module, an alarm module and a load module, wherein the alarm module is connected with the load module in series, a series branch of the alarm module and the load module is connected with a branch where the monitoring module is located in parallel, and the monitoring branch is connected with an alarm branch in parallel.

2. The vacuum circuit breaker opening control circuit for the coal mine according to claim 1, wherein the alarm module comprises a trip circuit relay KCC, a first breaker auxiliary contact QF1, a second breaker auxiliary contact QF2, a transfer switch SA, a diode VD, wherein a series branch of the transfer switch SA and the first breaker auxiliary contact QF1 is connected in parallel with a series branch of the trip circuit relay KCC and the second breaker auxiliary contact QF2, and a series branch of the transfer switch SA and the first breaker auxiliary contact QF1 is connected in series with a series branch of the trip circuit relay KCC and the second breaker auxiliary contact QF2 and a load module.

3. The breaking control circuit of the vacuum circuit breaker for the coal mine according to claim 2, wherein one end of the diode VD is connected to a wire between the transfer switch SA and the first breaker auxiliary contact QF1, and the other end of the diode VD is connected to a wire between the trip circuit relay KCC and the second breaker auxiliary contact QF 2.

4. The breaking control circuit of the vacuum circuit breaker for the coal mine as claimed in claim 1, wherein the load module comprises a coil YT, the coil YT being of the type MZS-25.

5. The tripping control circuit for a vacuum circuit breaker in a coal mine as set forth in claim 1, wherein said monitoring module comprises a power supply monitoring relay KT, which is a DZB-12B type relay.