CN209804531U

CN209804531U - novel quick earthing switch

Info

Publication number: CN209804531U
Application number: CN201920853559.7U
Authority: CN
Inventors: 杭连根; 徐永新
Original assignee: Hyundai Heavy Industries China Electric Co Ltd
Current assignee: Hyundai Heavy Industries China Electric Co Ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2019-12-17
Anticipated expiration: 2029-06-06

Abstract

The utility model discloses a novel fast grounding switch, which comprises a shell and a vertical moving component; the vertical movement assembly is connected with the shell through a crank link mechanism, the bottom of the vertical movement assembly is connected with an insulating support plate, the bottom of the insulating support plate is sequentially connected with a contact A, B, C, the contacts A, B, C are connected with a grounding terminal through respective soft connection rows, and the grounding terminal is connected with the outer wall of the shell. The device controls the vertical movement of the insulating support plate through the crank connecting rod structure, so that the three contacts are controlled to be integrally switched on and switched off at the same time, the overall structure is simple and reliable, the action is rapid, and the safety factor is high.

Description

Novel quick earthing switch

Technical Field

The utility model relates to a novel quick earthing switch.

Background

in sulfur hexafluoride gas insulated metal enclosed switchgear, the fast grounding switch is arranged on the side of the outgoing line isolating switch of the outgoing line loop, which is close to the line, and has two functions:

1. the open-close parallel overhead line generates capacitance current due to electrostatic induction and generates inductance current due to electromagnetic induction;

2. When the insulator in the shell has creepage or arcing in the shell, the quick grounding switch quickly grounds the main circuit and utilizes the breaker to cut off the fault current.

The fast grounding switch is required to have the following two functions:

1. Simple structure and reliable operation.

2. the synchronism of closing between the contacts and enough strength.

But current quick earthing switch often the structure is complicated, and too rely on electronic component, so holistic structural stability is not strong, and the A, B, C three-phase needs to correspond and is equipped with three contact, and three contact of tradition controls ground connection respectively, causes three contact earthing time to have the interval very easily to cause unnecessary incident.

SUMMERY OF THE UTILITY MODEL

the utility model aims at solving the defects of the prior art, providing a novel quick grounding switch.

A novel quick grounding switch comprises a shell and a vertical moving component; the vertical movement subassembly pass through crank link mechanism and link to each other with the casing, the bottom of vertical movement subassembly even has insulating support plate, insulating support plate's bottom even have contact A, B, C in proper order, contact A, B, C all link to each other with ground terminal through respective flexible coupling row, flexible coupling row be the U-shaped metalwork that has the flexibility, one side of U-shaped metalwork links to each other with contact A, B, C respectively, the opposite side links to each other with ground terminal, ground terminal and the outer wall of casing link to each other.

Preferably, the crank link mechanism comprises a driving shaft and a crank arm, one end of the driving shaft extends out of the shell and is connected with the motor, the other end of the driving shaft is hinged with the upper end of the crank arm, and the lower end of the crank arm is hinged with the side wall of the vertical moving assembly.

Preferably, one side of the U-shaped metal piece is connected to the contact A, B, C through a vertical electric plate.

Preferably, the back of the vertical moving assembly is connected with a sliding block, and a vertical sliding rail matched with the sliding block is arranged in the shell.

has the advantages that:

1. The vertical movement assembly is driven to move up and down through the crank connecting rod mechanism, so that the switching-on and switching-off operations of the three contacts are completed, the overall structure is simple and reliable, the up-and-down actions of the contacts can be realized only by one action part, and the three-phase contact (contact A, B, C) is installed on the same insulating support plate, so that the switching-on synchronism is ensured, and the capacity of the rapid earthing switch for resisting the interphase electromotive force is improved.

2. through the flexible coupling row of U-shaped, can guarantee when the vertical migration subassembly moves from top to bottom, the contact keeps all the time with the good electric conductivity of ground terminal to guarantee the reliable and stable of whole device.

Drawings

FIG. 1 is a schematic diagram of a novel fast grounding switch;

Fig. 2 is a schematic diagram of the internal structure of a novel fast grounding switch;

FIG. 3 is a schematic diagram of the internal structure of a novel fast grounding switch;

1. The shell 2, the insulating support plate 21, the contact A22, the contact B23, the contact C3, the flexible connecting row 4, the crank arm 5 and the driving shaft.

Detailed Description

In order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the following embodiments and the attached drawings, and the embodiments are only used for explaining the present invention, and do not constitute the limitation to the protection scope of the present invention.

A novel quick grounding switch comprises a shell 1 and a vertical moving component; the vertical movement subassembly pass through crank link mechanism and link to each other with the casing, the bottom of vertical movement subassembly even has insulating support plate 2, insulating support plate 2's bottom even have contact A21, contact B22, contact C23 in proper order, contact A, B, C all link to each other with ground terminal through respective flexible connection row 3, flexible connection row 3 be the rectangular shape metalwork that has the flexibility, ground terminal and casing 1's outer wall link to each other.

The crank link mechanism comprises a driving shaft 5 and a crank arm 4, one end of the driving shaft 5 extends out of the shell 1 and is connected with the motor, the other end of the driving shaft 5 is hinged with the upper end of the crank arm 4, and the lower end of the crank arm 4 is hinged with the side wall of the vertical moving assembly.

The back of the vertical moving component is connected with a sliding block, and a vertical sliding rail matched with the sliding block is arranged in the shell.

The using method comprises the following steps:

1. When sensing that there is a risk in the line that requires grounding;

2. sending a control signal and connecting the motor with electricity;

3. The motor drives the rotating shaft 5 to rotate, the rotating shaft drives the crank arm 4 to rotate, the crank arm 4 drives the vertical moving assembly to move up and down, the insulating support plate 2 drives the contact A21, the contact B22 and the contact C23 to move together, and grounding operation is completed.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel quick grounding switch is characterized by comprising a shell and a vertical moving component; the vertical movement subassembly pass through crank link mechanism and link to each other with the casing, the bottom of vertical movement subassembly even has insulating support plate, insulating support plate's bottom even have contact A, B, C in proper order, contact A, B, C all link to each other with ground terminal through respective flexible coupling row, flexible coupling row be the U-shaped metalwork that has the flexibility, one side of U-shaped metalwork links to each other with contact A, B, C respectively, the opposite side links to each other with ground terminal, ground terminal and the outer wall of casing link to each other.

2. the novel quick grounding switch according to claim 1, wherein the crank-link mechanism comprises a driving shaft and a connecting lever, one end of the driving shaft extends out of the housing and is connected with the motor, the other end of the driving shaft is hinged with the upper end of the connecting lever, and the lower end of the connecting lever is hinged with the side wall of the vertical moving component.

3. The novel fast grounding switch of claim 1, wherein one side of said U-shaped metal member is connected to the contact A, B, C through vertical electrical connection plates.

4. The novel quick grounding switch of claim 1, wherein a sliding block is connected to the back of the vertical moving component, and a vertical sliding rail matched with the sliding block is arranged in the housing.