CN222484232U

CN222484232U - Novel enclosed bus structure for cable branch box

Info

Publication number: CN222484232U
Application number: CN202420368210.5U
Authority: CN
Inventors: 杜文镇; 高超; 袭禄祥; 薛潇龙
Original assignee: Shandong Taikai Electrical Co ltd
Current assignee: Shandong Taikai Electrical Co ltd
Priority date: 2024-02-28
Filing date: 2024-02-28
Publication date: 2025-02-14
Anticipated expiration: 2034-02-28

Abstract

The utility model discloses a novel closed busbar structure for a cable branch box, which comprises a main busbar, a connecting copper bar and an insulating protective plate. The main busbar is arranged directly above a circuit breaker, and three phases are arranged front to back. The main busbar is fixedly connected to the inner side of the insulating protective plate through an insulator support. The insulating protective plate comprises an upper protective plate and a lower protective plate. The upper protective plate is fixedly connected to a box body, and the insulator support is fixedly arranged on the inner side of the upper protective plate. The upper end of the connecting copper bar is fixedly connected to the main busbar through bolts, and the lower end thereof is connected to the incoming line end of the circuit breaker. The lower end of the upper protective plate is fixedly connected to the upper end of the front panel of the circuit breaker housing, and the upper end of the lower protective plate is fixedly connected to the lower end of the front panel of the circuit breaker through bolts. The structural design of the device is more reasonable, the adapter part is eliminated, and the cost is reduced. The new structural design is conducive to heat dissipation, and the temperature rise requirement of the cable branch box is met.

Description

Novel enclosed bus structure for cable branch box

Technical Field

The utility model relates to the field of breaker equipment, in particular to a novel enclosed bus structure for a cable branch box.

Background

At present, in the cable branch box, the wiring end adopts the bus bar hooking technique that does not punch behind the circuit breaker, and the circuit breaker does not punch through special adapter and articulates in the generating line openly, directly links to each other with main generating line structure through the copper bar with traditional circuit breaker, has increased a female overlap joint position, has increased the internal resistance of branch box, leads to calorific capacity increase, as shown in fig. 2.

In the structure, the main busbar is sealed in an insulating way, the surface of the main busbar is provided with the adapter, the surface of the adapter is provided with the circuit breaker, a plurality of elements are required to be stacked on the same horizontal plane, the positions are limited, the heat productivity of each element cannot be effectively emitted, heat accumulation and temperature rise are caused.

Disclosure of utility model

In order to solve the problems, the utility model provides a novel enclosed bus structure for a cable branch box, which has the characteristics of simple structural design, safety, reliability and good heat dissipation effect.

In order to achieve the aim of the utility model, the technical scheme adopted by the utility model is as follows:

A novel closed bus structure for cable branch box, it includes main bus bar, connect copper bar, insulating backplate, main bus bar sets up directly over the circuit breaker, arrange around the three phases, main bus bar supports with insulating backplate inboard fixed connection through the insulator, insulating backplate includes backplate and lower backplate, it is inboard at backplate with box fixed connection to go up the backplate, the insulator supports fixed setting, connect copper bar upper end and main bus bar fixed connection through the bolt, its lower extreme and circuit breaker inlet wire end are connected, the lower extreme and the circuit breaker casing front panel upper end fixed connection of going up the backplate, the upper end of lower backplate passes through bolt and circuit breaker front panel lower extreme fixed connection.

Further, the connecting copper bars are bent plates which are bent twice, the upper ends of the connecting copper bars are parallel to each other, and the lower ends of the connecting copper bars are fixedly connected with the wiring terminals of the circuit breaker.

Further, the upper guard plate comprises a top plate, a front panel and a bending plate which are integrally connected, the top plate is arranged above the main bus bar, the front panel protrudes forwards, the position of the front panel is closer to the front position than that of the circuit breaker, the heat dissipation space of the main bus bar is ensured, the lower end of the bending plate is flush with the front panel of the circuit breaker shell, and the bending plate is fixedly connected with the upper end of the circuit breaker shell through a bolt.

The utility model has the advantages that the device is structurally improved on the basis of the structure of a traditional enclosed bus, an adapter part is omitted, the circuit breaker is directly connected with a main bus bar above through a connecting copper bar, the limitation of the adapter structure is avoided, the specifications of the main bus bar and a branch copper bar can be properly increased, the current-carrying capacity is increased, the circuit breaker and the main bus bar are arranged up and down, the heat dissipation is facilitated, insulating guard plates are arranged at the upper and lower copper bar positions of the main bus bar and the circuit breaker, the artificial electric shock risk is reduced, the structure can realize various functions of an original enclosed bus system, ensure the heat dissipation effect, avoid the heating problem and meet the temperature rise requirement of a cable branch box.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model.

Fig. 2 is a schematic diagram of a conventional circuit breaker connection structure.

1-Main bus bar, 2-connection copper bar, 3-insulator support, 4-circuit breaker, 5-lower guard board, 6-top board, 7-front panel and 8-bending plate.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

The novel enclosed bus structure for the cable branch box comprises a main bus bar, a connecting copper bar and an insulating guard board, wherein the main bus bar 1 is arranged right above a circuit breaker 4, three phases of the main bus bar are fixedly arranged inside the cable branch box body in a front-back mode, the main bus bar is fixedly connected with the inner side of the insulating guard board through an insulator support 3, the insulating guard board comprises an upper guard board and a lower guard board 5, the upper guard board is fixedly connected with the box body, the insulator support 3 is fixedly arranged on the inner side of the upper guard board, the upper end of the connecting copper bar 2 is fixedly connected with the main bus bar 1 through a bolt, the lower end of the connecting copper bar is connected with the inlet wire end of the circuit breaker 4, the lower end of the upper guard board is fixedly connected with the upper end of the front panel of the circuit breaker 4, and the upper end of the lower guard board is fixedly connected with the lower end of the front panel of the circuit breaker through a bolt.

The circuit breaker casing is provided with threaded connection hole, conveniently fixes with upper and lower backplate tip.

Further, the connecting copper bars 2 are bent plates bent twice, because the three-phase main bus bars are spaced front and back, the bending angles of the three connecting copper bars are different, the upper end parts of the three connecting copper bars are parallel to each other, and the lower ends of the three connecting copper bars are fixedly connected with the wiring terminals of the circuit breaker.

Further, the upper guard plate comprises a top plate 6, a front panel 7 and a bending plate 8 which are integrally connected, the top plate is arranged above the main bus bar 1, the front panel protrudes forwards, the position of the front panel is closer to the front position than that of the circuit breaker, the heat dissipation space of the main bus bar in the upper guard plate is ensured, the lower end of the bending plate 8 is flush with the front panel of the circuit breaker shell, and the lower end of the bending plate is fixedly connected with the upper end of the circuit breaker shell through bolts.

The device is structurally improved based on the traditional enclosed bus, an adapter part is omitted, the cost is reduced, the circuit breaker is directly connected with the main bus above through the connecting copper bars, the limitation of the adapter structure is avoided, the specifications of the main bus and the branch copper bars can be properly increased, the current-carrying capacity is increased, the circuit breaker and the main bus are arranged up and down, heat dissipation is facilitated, insulating guard plates are arranged at the positions of the main bus and the upper and lower copper bars of the circuit breaker, the artificial electric shock risk is reduced, various functions of an original enclosed bus system can be realized, the heat dissipation effect is ensured, the heating problem can be avoided, and the temperature rise requirement of a cable branch box is met.

The foregoing is merely a preferred embodiment of the utility model, and it should be noted that modifications could be made by those skilled in the art without departing from the principles of the utility model, which modifications would be considered to be within the scope of the utility model without inventive faculty.

Claims

1. A novel closed bus structure for a cable branch box is characterized by comprising a main bus bar, a connecting copper bar and an insulating guard plate, wherein the main bus bar is arranged right above a circuit breaker and arranged front and back in three phases, the main bus bar is fixedly connected with the inner side of the insulating guard plate through an insulator support, the insulating guard plate comprises an upper guard plate and a lower guard plate, the upper guard plate is fixedly connected with a box body, the insulator support is fixedly arranged on the inner side of the upper guard plate, the upper end of the connecting copper bar is fixedly connected with the main bus bar through a bolt, the lower end of the connecting copper bar is connected with a wire inlet end of the circuit breaker, the lower end of the upper guard plate is fixedly connected with the upper end of a front panel of a circuit breaker shell, and the upper end of the lower guard plate is fixedly connected with the lower end of the front panel of the circuit breaker through a bolt.

2. The novel enclosed busbar structure for a cable branch box according to claim 1, wherein the connecting copper bars are bent plates bent twice, the upper ends of the connecting copper bars are parallel to each other, and the lower ends of the connecting copper bars are fixedly connected with the wiring terminals of the circuit breaker.

3. The novel enclosed busbar structure for a cable branch box according to claim 1, wherein the upper guard plate comprises a top plate, a front panel and a bending plate which are integrally connected, the top plate is arranged above the main busbar, the front panel protrudes forwards, the lower end of the bending plate is flush with the front panel of the circuit breaker shell, and the bending plate is fixedly connected with the upper end of the circuit breaker shell through bolts.