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Sealing structure based on non-return stop valve

A technology of one-way stop valve and sealing structure, which is applied in the direction of valve shell structure, lift valve, valve details, etc., can solve the problems of one-way valve structure imbalance, sealing failure, etc., and achieve the effect of increasing thickness

Inactive Publication Date: 2014-07-30
BEIJING XINGSHI HUARONG TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the technical problem to be solved by the present invention is to provide a sealing structure based on a one-way stop valve to solve the problem of structural imbalance in the one-way valve after multiple fillings of the low-temperature medium sealing structure, resulting in sealing failure. question

Method used

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  • Sealing structure based on non-return stop valve
  • Sealing structure based on non-return stop valve
  • Sealing structure based on non-return stop valve

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Embodiment Construction

[0030] Certain terms are used, for example, in the description and claims to refer to particular components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. As mentioned throughout the specification and claims, "comprising" is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect. In addition, the term "coupled" herein includes any direct and indirect electrical coupling means. Therefore, if it is described that a first device is coupled to a second device, it means that the first device may be directly elect...

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Abstract

The invention discloses a sealing structure based on a non-return stop valve. The sealing structure comprises a stop valve clack, a stop valve sealing ring, a fastening bolt, a non-return valve rod and a cavity, wherein the stop valve clack is in fit and fixed connection with the stop valve sealing ring, and a fixing groove used for fixing the fastening bolt is formed in a direction facing to the cavity; a through hole for arranging the fastening bolt in a penetrating manner is formed in the center position of the stop valve sealing ring, and is formed between the stop valve clack and the non-return valve rod in a close fit manner; the non-return valve rod is in tight fit with the stop valve sealing ring, and a fixing hole for fixing the fastening bolt is formed in the non-return valve rod; the fastening bolt is used for fixing the non-return valve rod, the stop valve sealing ring and the stop valve clack in a tight fit manner; a tapered cavity structure shrinking towards a port direction is formed in the port of the cavity. The sealing structure provided by the invention solves the problem of sealing failure due to structure unbalance of the non-return valve of a low-temperature medium sealing structure after repeated filling and sealing.

Description

technical field [0001] The invention relates to the field of sealing structures, and more particularly relates to a sealing structure based on a one-way stop valve. Background technique [0002] At present, the sealing structure (sealing device) is widely used in aviation, aerospace, military, industrial and other fields. For common industrial applications, the sealing structure can be used for the storage, storage, and transportation of low-temperature media. The low-temperature medium can be: LNG (Liquefied Natural Gas, liquefied natural gas), liquid nitrogen, liquid argon and other media. [0003] Usually, the sealing structure applied to the above-mentioned low-temperature medium, its filling equipment is sealed with a one-way valve plus a lip-shaped energy-storage seal ring structure, and the one-way valve relies on a polytetrafluoroethylene gasket or a polytrifluoroethylene gasket under the condition of internal pressure. Vinyl gasket for sealing. [0004] However, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/06F16K1/38F16K27/02
CPCF16K1/38F16K1/46F16K15/06F16K27/0209F16K27/0254
Inventor 郑颖建
Owner BEIJING XINGSHI HUARONG TECH DEV
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