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All-welded zero-leakage-rate pressure reducing valve

A pressure reducing valve, fully welded technology, applied in the direction of valve lift, valve details, valve devices, etc., can solve the problems of complex structure, large volume, heavy quality, etc., and achieve high assembly accuracy, good quality consistency, and long service life Effect

Pending Publication Date: 2021-03-26
SHANGHAI INST OF SPACE PROPULSION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of complex structure, high cost, large volume and heavy weight existing in the existing inflation valve, especially in the field of weapons that require quick response and convenient operation, the purpose of the present invention is to provide a fully welded zero-leakage decompression valve valve

Method used

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  • All-welded zero-leakage-rate pressure reducing valve
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  • All-welded zero-leakage-rate pressure reducing valve

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Embodiment Construction

[0023] Preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. In the figure, 1-upper valve body, 2-lower valve body, 3-inlet joint, 4-lock nut I, 5-pressing part, 6-spool, 7-valve stem, 8-positioning block, 9- Guide block, 10-auxiliary spring, 11-metal diaphragm, 12-diaphragm support, 13-main spring, 14-spring seat, 15-lock nut II, 16-adjusting screw, 17-filter.

[0024] Such as figure 1 with figure 2 As shown in the embodiment, the device includes: upper valve body 1, lower valve body 2 and inlet joint 3, filter screen 17, lock nut I4, pressing member 5, valve core 6, valve stem 7, positioning block 8, Guide block 9, auxiliary spring 10, metal diaphragm 11, diaphragm support 12, main spring 13, spring seat 14, lock nut II15 and adjusting screw 16. The inlet joint 3 and the lower valve body 2 are first threadedly connected, and the filter screen 17 is compressed and fixed at the same time. Wherein the metal di...

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Abstract

The invention discloses an all-welded zero-leakage-rate pressure reducing valve. An inlet is formed in the left side, and an outlet is formed in the right side; the pressure reducing valve is composedof an upper valve body, a lower valve body, an inlet connector, a filter screen, a locking nut I, a pressing piece, a valve element, a valve rod, a positioning block, a guide block, an auxiliary spring, a metal diaphragm, a diaphragm support, a main spring, a spring seat, a locking nut II and an adjusting screw; the inlet connector and the lower valve body are connected through threads, and meanwhile the filter screen is pressed and fixed; the metal diaphragm is pressed by the upper valve body and the lower valve body and is supported by the diaphragm support for the main body; one end of theauxiliary spring is supported by the positioning block and the guide block, and the other end of the auxiliary spring supports the valve rod and applies auxiliary spring force to the metal diaphragmthrough the valve rod; meanwhile, the valve rod is guided by the positioning block and the guide block; a matching surface between the positioning block and the guide block is a conical surface; one end of the main spring is supported by the spring seat, and the main spring force is applied to the metal diaphragm through the diaphragm support; and the main spring force is adjusted through the adjusting screw and is locked and fixed through the locking nut II.

Description

technical field [0001] The invention relates to the application of machinery in the fields of aerospace vehicles, trains, etc., and in particular to a fully welded zero-leakage pressure reducing valve. Background technique [0002] Pressure reducing valves are currently widely used in aerospace, automobile, train and other fields, and are mainly used to adjust the gas pressure of gas cylinders (or gas sources). [0003] The traditional structure of the pressure reducing valve is mostly fixed by thread tightening or mechanical locking. This structure often makes the valve complex in structure, large in size, unstable in performance, low in reliability, and short in life. In-orbit service requirements. [0004] The purpose of the present invention is to avoid the deficiencies of the above-mentioned prior art, and adopt a fully welded zero-leakage valve structure, thereby providing a new lightweight and highly reliable fully-welded zero-leakage pressure reducing valve, so as t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/02F16K1/32F16K1/36F16K27/02F16K27/10F16K31/126
CPCF16K1/02F16K1/32F16K1/36F16K31/1262F16K27/02F16K27/102
Inventor 徐营章红莉陆冰陈红朱利敏汪俊龙袁卫成
Owner SHANGHAI INST OF SPACE PROPULSION