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A high-barrier non-metallic diaphragm pressure reducer

A non-metallic, diaphragm-type technology, applied in the direction of safety valves, engine components, balance valves, etc., can solve the problems of poor sealing margin of external leakage, failure to meet the high reliability and high precision of spacecraft, and achieve the reduction of processing accuracy requirements , Improve the anti-pollution ability, the effect of small friction

Active Publication Date: 2017-03-15
BEIJING INST OF CONTROL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the leakage rate of pressure reducer products for spacecraft is generally close to the specified requirements, and the leakage sealing margin is poor, while the sealing structure of industrial products cannot meet the high reliability and high precision requirements of spacecraft.

Method used

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  • A high-barrier non-metallic diaphragm pressure reducer

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Such as figure 1 As shown, a high-barrier non-metallic diaphragm pressure reducer includes a valve body 1, a valve seat 2, a guide pair 3, a valve steel ball 4, an outlet nozzle 5, a connecting pressure ring 6, a non-metallic diaphragm 7, Pressure plate 8, spring seat 9, spring 10, adjusting steel ball 11, kinematic pair 12, screw 13, inlet nozzle 14 and filter assembly 15;

[0026] The upper end of the pressure plate 8 has a groove; the spring seat 9 has a groove matching the groove of the pressure plate 8;

[0027] The valve seat 2 is made of internal hot-pressed non-metallic F3, and the valve steel ball 4 is made of grade G5 steel ball, and the material is stainless steel;

[0028] With the valve body 1 as the base, the valve seat 2 is fixedly placed in the high-pressure chamber of the valve body 1;

[0029] The guide pair 3 is fixedly placed in the inner ...

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Abstract

The invention belongs to the field of pressure reducer products for spaceflights and particularly relates to a high-resistance non-metal membrane type pressure reducer. According to the high-resistance non-metal membrane type pressure reducer, automatic centering between a valve seat and a valve steel ball can be achieved, so the sealing performance of the structure is fully guaranteed; meanwhile, the pressure reducer can be assembled on a valve body as an independent component, so the relative position requirements of matching between the valve seat and the valve steel ball can be guaranteed beneficially, and reset accuracy of a product is improved; the machining accuracy requirements of the valve body are reduced; a kinematic pair is connected with a non-metal membrane and a pressure-bearing disc, and only plays a role of a push rod in the working process and transmits force to push the valve steel ball away from the valve seat; the kinematic pair and the valve steel ball are guided respectively, so the pressure reducer is good in technological performance, flexible to move, small in friction, high in valve element resetting accuracy and beneficial to improvement of valve port airtightness and dynamic performance.

Description

technical field [0001] The invention relates to a high-barrier non-metallic diaphragm pressure reducer, which belongs to the field of spacecraft pressure reducers, in particular to a high-barrier non-metallic diaphragm type pressure reducer. Background technique [0002] The main function of the spacecraft pressure reducer is to reduce the high-pressure gas medium in the gas cylinder to a low pressure, and provide a relatively constant pressure for the storage tank. [0003] There are three main failure modes of the current pressure reducer products for spacecraft: first, due to the weakened sealing ability of the valve port caused by the contamination of the valve seat, it will cause the outlet pressure to climb, and the pressure of the storage tank will increase until it ruptures; secondly, due to the material, weld Leakage caused by defects or rupture of the diaphragm will lead to an abnormal drop in cylinder pressure and affect the life of the satellite; finally, valve s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K17/32
CPCF16K17/32
Inventor 王兆立夏继霞陈君魏延明
Owner BEIJING INST OF CONTROL ENG
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