One-way valve structure of piston for high-voltage switch, high-speed grounding switch and GIS

A one-way valve structure, high-voltage switch technology, applied in grounding switches, high-voltage/high-current switches, electric switches, etc., can solve the problems of low reliability, complex one-way valve structure, low reliability, etc. Simple, stable movement, good use reliability

Pending Publication Date: 2021-12-07
PINGGAO GRP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a piston check valve structure for a high pressure switch to solve the problems of complex structure and low reliability of the existing check valve; the purpose of the present invention is also to provide a quick grounding switch to solve The fast grounding switch in the prior art has the problem of low reliability due to the complex structure of the one-way valve; The problem of low reliability

Method used

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  • One-way valve structure of piston for high-voltage switch, high-speed grounding switch and GIS
  • One-way valve structure of piston for high-voltage switch, high-speed grounding switch and GIS
  • One-way valve structure of piston for high-voltage switch, high-speed grounding switch and GIS

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] Such as figure 1 As shown, the fast grounding switch includes a cylinder 6, the arc extinguishing gas is housed in the cylinder 6, the cylinder 6 is fixedly connected to the switch housing 4, the inner chamber of the cylinder 6 communicates with the chamber in the switch housing 4, and There is a moving contact 1, and the switch housing 4 is provided with a static contact 2, the moving contact 1 is fixedly connected with the driving mechanism transmission rod 3, and the operating mechanism transmission rod 3 is used to drive the moving contact 1 and the static contact 2 Engage or disengage to realize the closing and opening actions of the fast earthing switch.

[0102] A shielding conductor 5 is also provided at the connection between the inner chamber of the cylinder 6 and the inner chamber of the switch housing 4 , and the shielding conductor 5 is used to shield the moving contact 1 at the contact position between the cylinder 6 and the switch housing 4 .

[0103] In...

Embodiment 2

[0118] The difference between this embodiment and Embodiment 1 is that the piston in Embodiment 1 includes a rear piston body and a front piston body, a piston body for forming a one-way valve, and a rear port of the rear hole section of the rear piston body A ring of protrusions is provided at the position to form a rear limit mechanism, and a circle of protrusions is also provided at the front end opening of the front hole section of the front piston body to form a front limit mechanism to set the guiding activities at The valve ball in the guide hole is used for front and rear limit, and in this embodiment, the piston is an integral structure, the guide hole is a through hole, and the rear end of the guide hole is press-fitted with a limit ring, which is used to form a rear limit structure Cooperate with the front limit structure to limit the guide activity of the valve ball set in the guide hole.

Embodiment 3

[0120] The difference between this embodiment and Embodiment 1 is that the communication channel in Embodiment 1 is an integrated L-shaped hole, which is entirely arranged in the rear piston body, while in this embodiment, the rear piston body is adjacent to the rear hole section A vertical communication hole is provided on the ground, and a communication groove is provided on the front piston body. The notch of the communication groove faces backward and one side communicates with the front hole section of the guide hole. The communication groove is used to form a communication channel with the communication hole.

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Abstract

The invention relates to a one-way valve structure of a piston for a high-voltage switch, a high-speed grounding switch and a GIS. The GIS comprises the high-speed grounding switch, the high-speed grounding switch comprises the piston, the piston is provided with the one-way valve structure, and the one-way valve structure comprises a piston body, a valve ball and a communication channel; a guide hole is formed in the piston body, and an air inlet is formed in the front end of the guide hole; the valve ball is arranged in the guide hole in a guiding mode in the front-back direction, the valve ball has a closing position and an opening position which correspond to the two tail ends of the guide stroke of the valve ball respectively, and when the valve ball is located at the closing position, the air inlet is blocked so as to close a one-way valve; and the communication channel is provided with a front channel opening and a rear channel opening, the rear channel opening communicates with the rear side space of the piston body and used for forming an air outlet, the front channel opening communicates with the guide hole, and when the valve ball is located at the opening position, the front channel opening communicates with the air inlet. The whole one-way valve is simple, opening or closing of the one-way valve is achieved through front-back movement of the valve ball, and using reliability is good.

Description

technical field [0001] The invention relates to a piston one-way valve structure for a high-pressure switch, a fast grounding switch and a GIS. Background technique [0002] The fast earthing switch is used to isolate the earthing switch on the outgoing side of the line. It has the ability to close the short-circuit current and open and close the induced current. It is an important protection device. When the fast grounding switch breaks the induced current with a large voltage, the moving contact is prone to arc, which not only ablates the moving contact and the static contact seat, but also prolongs the breaking time. At present, according to the principle of arc extinguishing, there are two ways of blowing arc extinguishing and suction arc extinguishing. In the air blowing arc extinguishing method, the moving contact structure can compress the gas in the cylinder during the opening action, and blow out high-speed fresh SF to the fracture at the moment when the moving and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/04F15B15/14F15B15/20H01H33/22H01H31/00H01H33/46
CPCF16K15/04F15B15/1447F15B15/202H01H33/22H01H31/003H01H33/46
Inventor 樊子健贺晶晶王志刚苏戈张垒龚咪咪赵艳涛马志强秦政敏刘分张路阳史春玲崔连波李蓬
Owner PINGGAO GRP
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