CN209822546U - Insulating plate assembly of circuit breaker grounding switch - Google Patents

Abstract

The utility model discloses a circuit breaker earthing switch insulation board assembly, which comprises a backboard and side boards fixed on the left and right sides of the backboard, wherein the side boards are perpendicular to the backboard; the side plates comprise a first straight plate section, an arc-shaped plate section and a second straight plate section which are sequentially distributed from top to bottom, and the concave surface of the arc-shaped plate section faces to the direction of the other side plate; the back plate is provided with a grounding contact mounting plate which is used for mounting a grounding contact, and the back plate further comprises a groove formed in the bottom of the back plate, and the groove is located right below the grounding contact mounting plate; the back plate, the side plate and the grounding contact mounting plate are all made of insulating materials. An object of the utility model is to provide a circuit breaker earthing switch insulation board subassembly to there is the problem of potential safety hazard in the insulation board of vacuum circuit breaker among the solution prior art, realizes reducing the potential safety hazard, improves ground contact's insulating security's purpose.

Description

Insulating plate assembly of circuit breaker grounding switch

Technical Field

The utility model relates to a circuit breaker field, concretely relates to circuit breaker earthing switch insulating board subassembly.

Background

Vacuum circuit breakers are promising power switching devices in the low-voltage and medium-voltage fields, and are switching apparatuses using vacuum as an insulating and arc-extinguishing medium. Gas molecules in vacuum are very rare, and the probability of collision between electrons and molecules is very small, so that the insulating strength of the vacuum circuit breaker is very high. Compared with other types of circuit breakers, the vacuum circuit breaker has the advantages of safety, reliability, long service life, small maintenance workload, no environmental pollution and the like. The grounding switch is a mechanical grounding device which releases static electricity of the maintained equipment and a return circuit and ensures the personal safety of maintenance personnel during power failure maintenance. It can withstand a certain time of current in abnormal situations (such as short-circuits) but does not pass load current in normal situations. Which is usually part of an isolating switch. When the circuit of the circuit breaker needs to be overhauled, the circuit breaker is in the opening position, and the disconnecting switches on the two sides are both opened and are in the opening state. And the grounding switch is switched on and is used for grounding in normal work. So as to ensure the safety of equipment and maintenance personnel.

The existing vacuum circuit breaker generally has three or more grounding contacts, two adjacent grounding contacts are separated by an insulating plate to avoid short circuit, the insulating plate is independent or fixedly connected or hinged on the inner wall of the switch device, and the grounding position and the inner wall of the switch device (vacuum circuit breaker) still have conduction risk.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a circuit breaker earthing switch insulation board subassembly to there is the problem of potential safety hazard in the insulation board of vacuum circuit breaker among the solution prior art, realizes reducing the potential safety hazard, improves ground contact's insulating security's purpose.

The utility model discloses a following technical scheme realizes:

a circuit breaker grounding switch insulating board assembly comprises a back board and side boards fixed on the left side and the right side of the back board, wherein the side boards are perpendicular to the back board; the side plates comprise a first straight plate section, an arc-shaped plate section and a second straight plate section which are sequentially distributed from top to bottom, and the concave surface of the arc-shaped plate section faces to the direction of the other side plate; the back plate is provided with a grounding contact mounting plate which is used for mounting a grounding contact, and the back plate further comprises a groove formed in the bottom of the back plate, and the groove is located right below the grounding contact mounting plate; the back plate, the side plate and the grounding contact mounting plate are all made of insulating materials.

The utility model provides a there is the problem of potential safety hazard in the insulation board to among the prior art vacuum circuit breaker, the utility model provides a circuit breaker earthing switch insulation board subassembly, backplate are used for fixing the inner wall at vacuum circuit breaker, connect the ground contact mounting panel on it for carry out erection joint with ground contact, wherein the connected mode between ground contact mounting panel and the ground contact use current arbitrary connected mode can, like bolted connection, joint, centre gripping etc. all can. The left side and the right side of the back plate are provided with the side plates, so that the left side and the right side of the back plate are coated with the ground contacts through the side plates on the two sides, and the adjacent ground contacts are fully isolated. Because each ground contact is located in one application, for two adjacent ground contacts, two side plates are used for blocking the two adjacent ground contacts, and compared with a traditional single-block insulation mode, the anti-fleeing and short-circuit-preventing effect is obviously better. This application also has double-deck isolation between ground contact and the vacuum circuit breaker inner wall owing to there is the existence of backplate and ground contact mounting panel, therefore the risk of switching on between ground contact and the circuit breaker inner wall is showing and is reducing, and ground contact's insulating security has showing and improves. The curb plate includes from last first straight plate section, cowl section, the straight plate section of second that down distributes in proper order in this application, the concave surface of cowl section is towards another curb plate place orientation, and consequently the cowl section on two blocks of curb plates expands to the outside respectively, and the space between two blocks of curb plates of this region obviously increases, and this kind of setting is in order to give the installation space that the ground contact of connection on the ground contact mounting panel is wider, the workman's installation and the dismantlement operation of being convenient for, this kind of setting also can be further simultaneously improve the safe distance between ground contact and the curb plate, reduces the potential safety hazard. In addition, the bottom of the back plate is provided with the groove, the groove is positioned right below the grounding contact mounting plate, and the groove can be used for improving heat dissipation firstly, so that more heat can be dissipated and overflowed outwards in the grounding maintenance process; and earth conductor that ground contact is connected can pass through the recess card is at the circuit breaker inner wall, if set up common cable buckle isotructure at the circuit breaker inner wall, and the recess of this application can make earth conductor just can reach the inner wall of circuit breaker in short distance and block and establish to avoided earth conductor to stack winding problem in a mixed and disorderly manner in backplate, curb plate place around the space that forms, ensured that earth conductor can lead to the circuit breaker inner wall as early as possible and carry out regularly.

The grounding contact mounting plate is fixed on the back plate through bolts. This bolt can also extend like the lateral wall of circuit breaker, and then fix ground contact mounting panel, backplate in this application simultaneously on the circuit breaker inner wall through this bolt. Preferably, the bolt can also be used to simultaneously connect the ground contacts.

The groove is square, a plurality of parallel connecting rods are fixed between two opposite side walls of the groove, and the connecting rods are also made of insulating materials. When the length of the grounding wire is too long, the grounding wire can be wound on the connecting rod for a plurality of circles and then passes through the groove, or the grounding wire can be wound around a plurality of connecting rods in sequence to realize the consumption of the length of the grounding wire, so that the problem that the grounding wire is stacked in a mess and wound is further avoided.

The connecting rods are distributed at equal intervals.

A plurality of upward convex cylinders are uniformly distributed on the connecting rod along the axis direction of the connecting rod. The cylinder can carry on spacingly to passing or winding the earth conductor on the connecting rod for the stable distribution of an earth conductor avoids the horizontal slip between two adjacent cylinders, thereby further improves the stability to earth conductor.

The first straight plate section and the second straight plate section are both corrugated plates. Firstly, the corrugated plates are used as a first straight plate section and a second straight plate section, so that the surface areas of two sides of the first straight plate section and the second straight plate section can be obviously increased, and the heat dissipation effects of the first straight plate section and the second straight plate section are improved; secondly can also improve the ability that first straight plate section, the straight plate section of second anti external force impact and destruction, prolong the life of this application.

The back plate and the side plate are integrally formed. Such as being integrally formed during the injection molding process.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1. the utility model relates to a circuit breaker earthing switch insulating board subassembly comes from left and right sides cladding ground contact through the curb plate of both sides, ensures the abundant isolation between the adjacent ground contact. Because each ground contact is located in one application, for two adjacent ground contacts, two side plates are used for blocking the two adjacent ground contacts, and compared with a traditional single-block insulation mode, the anti-fleeing and short-circuit-preventing effect is obviously better.

2. The utility model relates to a circuit breaker earthing switch insulating board subassembly owing to have the existence of backplate and ground contact mounting panel, also has double-deck isolation between ground contact and the vacuum circuit breaker inner wall, therefore the risk of switching on between ground contact and the circuit breaker inner wall is showing and is reducing, and ground contact's insulating security has to show and is showing the improvement.

3. The utility model relates to a circuit breaker earthing switch insulating board subassembly, the arc plate section on two blocks of curb plates expands to the outside respectively, and the space between two blocks of curb plates of this region obviously increases, and the workman's installation of being convenient for is operated with the dismantlement, and the safe distance between improvement ground contact that also can be further simultaneously and the curb plate reduces the potential safety hazard.

4. The utility model relates to a circuit breaker earthing switch insulation board subassembly can make earth conductor just can reach the inner wall of circuit breaker in short distance and block and establish to avoided earth conductor to stack winding problem in a mixed and disorderly in the space that backplate, curb plate center on formation, ensured that earth conductor can cause the circuit breaker inner wall as early as possible and carry out regularly.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a front view of embodiment 1 of the present invention;

fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.

Reference numbers and corresponding part names in the drawings:

1-back plate, 2-first straight plate section, 3-arc plate section, 4-second straight plate section, 5-grounding contact mounting plate, 6-groove, 7-bolt, 8-connecting rod and 9-cylinder.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Example 1:

the insulating plate assembly of the grounding switch of the circuit breaker shown in fig. 1 and 2 comprises a back plate 1 and side plates fixed at the left and right sides of the back plate 1, wherein the side plates are perpendicular to the back plate 1; the back plate 1 and the side plates are both made of insulating materials; the side plates comprise a first straight plate section 2, an arc-shaped plate section 3 and a second straight plate section 4 which are sequentially distributed from top to bottom, and the concave surface of the arc-shaped plate section 3 faces the direction of the other side plate; the back plate 1 is provided with a grounding contact mounting plate 5, the grounding contact mounting plate 5 is used for mounting a grounding contact, the back plate further comprises a groove 6 formed in the bottom of the back plate 1, and the groove 6 is located right below the grounding contact mounting plate 5. The ground contact mounting plate 5 is fixed on the back plate 1 through bolts 7. The back plate 1 and the side plates are integrally formed.

Example 2:

as shown in fig. 3, in the insulating plate assembly of the ground switch of the circuit breaker, based on embodiment 1, the groove 6 is square, a plurality of parallel connecting rods 8 are fixed between two opposite side walls of the groove 6, and the connecting rods 8 are also made of insulating materials. The connecting rods 8 are distributed at equal intervals. A plurality of upward convex columns 9 are uniformly distributed on the connecting rod 8 along the axis direction of the connecting rod. The first straight plate section 2 and the second straight plate section 4 are both corrugated plates.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (7)

1. The circuit breaker grounding switch insulating board assembly is characterized by comprising a back board (1) and side boards fixed on the left side and the right side of the back board (1), wherein the side boards are perpendicular to the back board (1); the back plate (1) and the side plates are both made of insulating materials; the side plates comprise a first straight plate section (2), an arc-shaped plate section (3) and a second straight plate section (4) which are sequentially distributed from top to bottom, and the concave surface of the arc-shaped plate section (3) faces to the direction of the other side plate; the back plate (1) is provided with a grounding contact mounting plate (5), the grounding contact mounting plate (5) is used for mounting a grounding contact, the back plate further comprises a groove (6) formed in the bottom of the back plate (1), and the groove (6) is located under the grounding contact mounting plate (5).

2. A disconnector earthing switch insulating board assembly according to claim 1, characterized in that the earthing contact mounting plate (5) is fixed to the back-plate (1) by means of bolts (7).

3. A disconnector earthing switch insulating-board assembly according to claim 1, characterized in that the recess (6) is square, that between the opposite side walls of the recess (6) are fixed a number of parallel connecting rods (8), said connecting rods (8) also being made of insulating material.

4. A disconnector earthing switch insulating-plate assembly according to claim 3, characterized in that several tie-rods (8) are equally spaced.

5. A disconnector earthing switch insulating board assembly according to claim 3, characterized in that the connecting rod (8) has a plurality of upwardly protruding cylinders (9) uniformly distributed along its axis.

6. A disconnector earthing switch insulating board assembly according to claim 1, characterized in that the first straight section (2) and the second straight section (4) are corrugated plates.

7. A disconnector earthing switch insulating board assembly according to claim 1, characterized in that the back plate (1), side plates are integrally formed.