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Direct-acting sealing device and circuit breaker and gas-filled cabinet using the device

A sealing device and circuit breaker technology, which is applied in the fields of gas-filled cabinets, circuit breakers, and direct-acting sealing devices, can solve the problems of poor dynamic sealing performance and easy damage.

Active Publication Date: 2020-07-28
XUJI GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the deficiencies in the existing metal bellows sealing technology, the purpose of the present invention is to provide a direct motion sealing device to solve the problem of poor dynamic sealing performance and easy damage in the existing metal bellows sealing technology; in addition, the present invention also provides A circuit breaker and an inflatable cabinet using the device are provided

Method used

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  • Direct-acting sealing device and circuit breaker and gas-filled cabinet using the device
  • Direct-acting sealing device and circuit breaker and gas-filled cabinet using the device
  • Direct-acting sealing device and circuit breaker and gas-filled cabinet using the device

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Effect test

specific Embodiment 1

[0066] The specific embodiment 1 of the inflatable cabinet of the present invention includes a circuit breaker, the circuit breaker includes an air box and an insulating pull rod 4, a sealing plate 1 is provided on the air box, and a mounting hole is provided on the sealing plate 1, and a direct moving Sealing means. Such as figure 1 As shown, the direct-moving sealing device of the circuit breaker includes a sleeve 3, and the sleeve 3 is provided with a perforation. There is a lip seal ring on each side to achieve the purpose of axial dynamic sealing. The lip-shaped sealing ring used in this embodiment is a U-shaped sealing ring 6 , which has a low coefficient of friction and is suitable for occasions where the insulating pull rod 4 reciprocates. The U-shaped sealing ring 6 constitutes a direct-acting sealing ring, and the open ends of the two U-shaped sealing rings 6 are all facing the inside of the air box, which can ensure the airtightness of the air box when the insulat...

specific Embodiment 2

[0073] The specific embodiment 2 of the inflatable cabinet of the present invention differs from the specific embodiment 1 of the inflatable cabinet of the present invention only in that: figure 2 As shown, the sleeve 23 has an integral structure, and the sleeve 23 is provided with an annular boss for blocking and matching with the sealing plate 21 and a sealing ring positioning surface facing the side of the second retaining ring 27 .

specific Embodiment 3

[0074] The specific embodiment 3 of the inflatable cabinet of the present invention differs from the specific embodiment 1 of the inflatable cabinet of the present invention only in that: image 3 As shown, both the first retaining ring 32 and the second retaining ring 37 are engaged with the sleeve 33 through the elastic retaining ring 38 .

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Abstract

The invention discloses a direct-acting sealing device, and a circuit breaker and a gas-insulated switch cabinet using the same, and belongs to the technical field of air cabinet sealing devices. Thedirect-acting sealing device comprises a sleeve which is radially moved along a mounting hole of a sealing plate and is axially positioned and assembled on the sealing plate along the mounting hole ofthe sealing plate; a pull rod through hole in sliding seal fit with an insulating pull rod is arranged in the sleeve; the sleeve is provided with a sleeve stop piece in stop fit with the sealing plate in an axial direction of the mounting hole; the sleeve stop piece and the sleeve are in stop fit in the axis direction of the mounting hole, so that the sleeve can be axially positioned and assembled on the sealing plate along the mounting hole of the sealing plate; and the sleeve is sleeved with a mounting hole sealing ring hermetically assembled between the sleeve and the hole wall of the mounting hole of the sealing plate. According to the device, the sealing performance of an axial reciprocating motion of the insulating pull rod can be ensured, and the sealing performance during axial and radial run-out can be realized; and therefore, the problems that an existing metal corrugated pipe sealing technology is poor in dynamic sealing performance and easy in damage are solved.

Description

technical field [0001] The invention relates to the technical field of air cabinet sealing devices, in particular to a direct-acting sealing device, a circuit breaker and an inflatable cabinet using the device. Background technique [0002] Gas insulated switchgear is a kind of switchgear that utilizes gas insulation, and its essential feature is that the primary element is sealed in a low pressure gas insulating 6 , N 2 / SF 6 Mixed gas, N 2 etc.) inside the box, it is not affected by the external environment. Its outstanding advantages are product miniaturization, full working condition operation, high reliability and high safety. Among them, the sealing reliability is to give full play to the advantages of gas insulated switchgear and ensure gas A key factor for the long-term operational reliability of insulated switchgear. [0003] For gas-insulated switchgear, there are three types of sealing links, namely: welding seal, static seal and dynamic seal. Among them, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02B13/035H02B13/045H02B1/28
CPCF16J15/3276H02B1/28H02B13/035H02B13/045
Inventor 王帮田孙鹏程王军委王其中李树昆张志彬李仲夏喻会永武兴坛王洋洋穆俊超
Owner XUJI GRP
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