CN219163255U

CN219163255U - Breaker of normal pressure cabinet

Info

Publication number: CN219163255U
Application number: CN202223445810.7U
Authority: CN
Inventors: 彭平; 凌永捷; 刘叶旺
Original assignee: Shuangying Electric Technology Co ltd
Current assignee: Shuangying Electric Technology Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-06-09
Anticipated expiration: 2032-12-22

Abstract

The utility model relates to the technical field of circuit breakers and discloses a normal pressure cabinet circuit breaker, which comprises a main body frame, wherein a main grounding switch is arranged at the bottom of the main body frame, an A-phase circuit breaker, a B-phase circuit breaker and a C-phase circuit breaker are respectively arranged on three interfaces at the bottom of the main grounding switch, a disconnecting switch is arranged at the bottom of the main body frame, the disconnecting switch is connected with the main grounding switch, and three moving contacts are arranged at the bottom of the main body frame. The isolating switch is connected with the main grounding switch, so that the main shafts of the isolating switch and the main grounding switch are respectively matched and completed by one moving contact, the operating mechanism of the load switch is improved by adopting the operating mechanism of the existing novel environment-friendly cabinet, the cost is greatly reduced, and meanwhile, the moving contact is processed by adopting an integrated copper block, and the isolating switch has the characteristics of small volume, stable rigidity, stable electric conduction and the like, is more practical, and is suitable for wide popularization and use.

Description

Breaker of normal pressure cabinet

Technical Field

The utility model belongs to the technical field of circuit breakers, and particularly relates to a normal pressure cabinet circuit breaker.

Background

The circuit breaker is a switching device capable of switching on and off a current under normal circuit conditions and switching on and off a current under abnormal circuit conditions within a predetermined time, and is classified into a high-voltage circuit breaker and a low-voltage circuit breaker according to its use range, and the high-low voltage boundary line is more fuzzy, and is generally called a high-voltage electrical appliance of 3KV or more.

Parts such as mechanical lock catches are arranged in the current breaker switch structure for the normal pressure cabinet, so that the whole size of the switch is large, the occupied area is large, the mechanical transmission of opening and closing is complex, and the whole conductivity is unstable.

The present utility model has been made in view of this.

Disclosure of Invention

In order to solve the technical problems, the utility model adopts the basic conception of the technical scheme that:

the normal pressure cabinet circuit breaker comprises a main body frame, wherein a main grounding switch is arranged at the bottom of the main body frame, an A three-phase circuit breaker, a B three-phase circuit breaker and a C three-phase circuit breaker are respectively arranged on three interfaces at the bottom of the main grounding switch, an isolating switch is arranged at the bottom of the main body frame and connected with the main grounding switch, three moving contacts are arranged at the bottom of the main body frame and are respectively connected with the A three-phase circuit breaker, the B three-phase circuit breaker and the C three-phase circuit breaker.

As a preferred implementation mode of the utility model, the top of the main body frame is provided with the SMC lining board, and both sides of the SMC lining board are provided with soft connection.

As a preferred embodiment of the utility model, all three moving contacts are processed by adopting an integrated copper block.

In a preferred embodiment of the present utility model, a vacuum bulb is disposed at a bottom position of the SMC liner plate, and the vacuum bulb is located directly above the moving contact.

As a preferred embodiment of the present utility model, a grounding copper bar is disposed at one side of the bottom of the main body frame.

As a preferred embodiment of the present utility model, the intervals among the a-phase circuit breaker, the B-phase circuit breaker and the C-phase circuit breaker are all 160MM.

Compared with the prior art, the utility model has the following beneficial effects:

the circuit breaker structure comprises a main body frame, a main grounding switch, an A-phase circuit breaker, a B-phase circuit breaker, a C-phase circuit breaker, moving contacts, an SMC lining board, a grounding copper bar, soft connection, vacuum bubbles and a disconnecting switch, wherein the distances among the A-phase circuit breaker, the B-phase circuit breaker and the C-phase circuit breaker are 160MM, three moving contacts are respectively connected with the A-phase circuit breaker, the B-phase circuit breaker and the C-phase circuit breaker, the disconnecting switch is connected with the main grounding switch, so that a main shaft for separating the disconnecting switch from the main grounding switch is respectively completed by matching one moving contact, an operating mechanism of a load switch is improved by adopting the operating mechanism of the existing novel environment-friendly cabinet, the cost is greatly reduced, and meanwhile, the arranged moving contacts are processed by adopting integrated copper blocks, and the circuit breaker has the characteristics of small size, stable rigidity, stable electric conduction and the like.

The utility model has small whole volume of the switch, is used for the high-voltage inflatable cabinet of more than 40.5KV, greatly reduces the volume and the occupied area of the switch cabinet, has the characteristics of economy and practicability, has integrated design of the switch, has small number of parts, does not have mechanical lock catches, has very simple mechanical transmission, directly pushes the main shaft of the vacuum circuit breaker to open and close by the magnetic field generated by exciting current of the opening and closing coil to move, reduces the direct driving of a transmission link for opening and closing the switch, has excellent switching characteristics, and has good control of the switching-on speed, the initial and final pressure ratio of the contact spring and good absorption of the residual switching-on work.

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.

Drawings

In the drawings:

FIG. 1 is a schematic view of the main frame of the present utility model;

FIG. 2 is a schematic view of the back structure of the main frame of the present utility model;

fig. 3 is a schematic side view of the main frame of the present utility model.

In the figure: 1. a main body frame; 2. a phase A circuit breaker; 3. a phase B circuit breaker; 4. a C-phase breaker; 5. a moving contact; 6. SMC lining board; 7. a grounding copper bar; 8. soft connection; 9. vacuum soaking; 10. and an isolating switch.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model.

As shown in fig. 1 to 3

The normal pressure cabinet circuit breaker comprises a main body frame 1, wherein a main grounding switch is arranged at the bottom of the main body frame 1, an A three-phase circuit breaker 2, a B three-phase circuit breaker 3 and a C three-phase circuit breaker 4 are respectively arranged on three interfaces at the bottom of the main grounding switch, a disconnecting switch 10 is arranged at the bottom of the main body frame 1, the disconnecting switch 10 is connected with the main grounding switch, three moving contacts 5 are arranged at the bottom of the main body frame 1, the three moving contacts 5 are respectively connected with the A three-phase circuit breaker 2, the B three-phase circuit breaker 3 and the C three-phase circuit breaker 4, and main shafts of the disconnecting switch 10 and the main grounding switch are respectively completed by matching one moving contact 5.

In the concrete embodiment, three moving contacts 5 are all processed by adopting an integrated copper block, and the three moving contacts have the characteristics of small volume, stable rigidity, stable electric conduction and the like, the SMC lining board 6 is installed at the top position of the main body frame 1, the flexible connection 8 is arranged at two sides of the SMC lining board 6, the vacuum bubble 9 is arranged at the bottom position of the SMC lining board 6, and the vacuum bubble 9 is positioned right above the moving contacts 5.

Further, a grounding copper bar 7 is arranged on one side of the bottom of the main body frame 1, and the distances among the three-phase circuit breaker A2, the three-phase circuit breaker B3 and the three-phase circuit breaker C4 are 160MM.

The implementation principle of the normal pressure cabinet circuit breaker of the embodiment is as follows: the circuit breaker structure comprises a main body frame 1, a main grounding switch, an A-phase circuit breaker 2, a B-phase circuit breaker 3, a C-phase circuit breaker 4, a moving contact 5, an SMC lining board 6, a grounding copper bar 7, a soft connection 8, a vacuum bulb 9 and a disconnecting switch 10, wherein the distances among the A-phase circuit breaker 2, the B-phase circuit breaker 3 and the C-phase circuit breaker 4 are 160MM, the three moving contacts 5 are respectively connected with the A-phase circuit breaker 2, the B-phase circuit breaker 3 and the C-phase circuit breaker 4, the disconnecting switch 10 is connected with the main grounding switch, so that a main shaft separating the disconnecting switch 10 from the main grounding switch is respectively completed by matching one moving contact 5, an operating mechanism of a load switch is improved by adopting an operating mechanism of the existing novel environment-friendly cabinet, the cost is greatly reduced, the whole volume of the switch is small, the volume and the occupied area of the high-voltage air-inflation cabinet above 40.5KV are greatly reduced, the economical and practical characteristics are achieved, and meanwhile, the set moving contact 5 adopts an integrated copper block, the volume, the small volume and the steel stability are stable, and the electric conductivity are stable.

Claims

1. The normal pressure cabinet circuit breaker comprises a main body frame, and is characterized in that a main grounding switch is arranged at the bottom of the main body frame, an A-phase circuit breaker, a B-phase circuit breaker and a C-phase circuit breaker are respectively arranged on three interfaces at the bottom of the main grounding switch, an isolating switch is arranged at the bottom of the main body frame and connected with the main grounding switch, three moving contacts are arranged at the bottom of the main body frame and are respectively connected with the A-phase circuit breaker, the B-phase circuit breaker and the C-phase circuit breaker.

2. The normal pressure cabinet circuit breaker according to claim 1, wherein the three moving contacts are all processed by adopting an integrated copper block.

3. The normal pressure cabinet circuit breaker according to claim 1, wherein the top of the main body frame is provided with an SMC lining board, and both sides of the SMC lining board are provided with flexible connections.

4. A normal pressure cabinet circuit breaker according to claim 3, characterized in that the bottom position of the SMC lining plate is provided with a vacuum bulb, which is located directly above the moving contact.

5. The atmospheric cabinet circuit breaker according to claim 1, wherein a side of the bottom of the main body frame is provided with a grounding copper bar.

6. The atmospheric cabinet circuit breaker according to claim 1, wherein the spacing between the a, B and C three-phase circuit breakers is 160MM.