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Guide and buffer device of moving contact

A buffer device and moving contact technology, which is applied to contacts, high-voltage air circuit breakers, electrical components, etc., can solve problems such as the impact on the life of the operating mechanism and transmission system, and achieve the effect of improving the service life

Active Publication Date: 2014-01-29
CHINA XD ELECTRIC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing problem is: when the moving arc contact is in the opening operation, the moving arc contact changes from a moving state to a static state, which is mainly realized by the operating mechanism and the transmission system. The life of the system has a greater impact on the

Method used

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  • Guide and buffer device of moving contact
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  • Guide and buffer device of moving contact

Examples

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] see Figure 1 to Figure 8 Shown, wherein the single-phase valve 3 is a circular ring (structure such as Figure 7 ), there are evenly distributed holes 41 on the piston 4 (structure such as Figure 4 ), while the single-phase valve 3 moves left and right along the limit step 11 of the installation part 110 of the moving arc contact 1 and the bottom surface 12 of the step hole 40 of the piston 4 along the moving arc contact 1 on the side of the opening direction of the piston 4; the piston The ring 7 is composed of two O-rings and a guide ring sleeved on the outer circumference of the two O-rings (structure such as figure 2 ), installed in the groove 42 of the piston 4, it not only has the function of guiding and sealing the gas, but also can reduce the friction effect, and the single-phase valve 3, the piston 4, and the piston ring 7 are assembled c...

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PUM

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Abstract

The invention provides a guide and buffer device of a moving contact, comprising a moving arcing contact, a guide cylinder, a check valve, a piston and a guide holder, wherein the guide cylinder is of a round cylinder shape and is fixed in the guide holder; an installing part is concavely arranged on the moving arcing contact, the check valve and the piston are installed on the installing part of the moving arcing contact, the moving arcing contact penetrates through the guide cylinder and the guide holder, the check valve and the piston are positioned in the guide cylinder; a groove is formed on the circumference of the piston, a piston ring is installed in the groove, the piston ring is abutted against the inner wall of the guide cylinder; the piston and the moving arcing contact are fixedly connected, a step hole is concavely formed on one side surface of the piston, the distance between the bottom surface of the step hole and a spacing step of the installing part is greater than the thickness of the check valve; the check valve is of an annular shape, the outer diameter of the check valve is less than the diameter of the step hole; the check valve is installed between the bottom surface of the step hole and the spacing step of the installing part; and a plurality of holes penetrating through the step hole are formed on the piston. The invention not only achieves the buffer effect, but also is favorable for prolonging the service life of a transmission system and an operating mechanism.

Description

【Technical field】 [0001] The invention relates to a moving device for a moving arc contact in a gas-insulated high-voltage switchgear. 【Background technique】 [0002] The commonly used structure in the prior art is that the moving arc contact is guided by a guide ring during its movement, but the movement impact of the moving arc contact is relatively large during the movement. The existing problem is: when the moving arc contact is in the opening operation, the moving arc contact changes from a moving state to a static state, which is mainly realized by the operating mechanism and the transmission system. The life of the system has a greater impact. 【Content of invention】 [0003] The purpose of the present invention is to provide a guiding and buffering device for a moving contact, which can reduce the impact force of the moving arcing contact in the process of changing from a moving state to a speed of zero during the opening operation. [0004] In order to achieve th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H1/50H01H33/42
Inventor 张猛程立吕军玲徐刚刘琨
Owner CHINA XD ELECTRIC CO LTD
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