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Small integrated high-pressure pneumatic control valve

A high-pressure gas and small-scale technology, applied in the field of small integrated high-pressure air-controlled valves, can solve problems such as difficulty in adapting to large-vibration dynamic environments and complex structure of air-controlled stop valves, and achieve enhanced adaptability to large-vibration dynamic environments and shorten the axial direction. The effect of cantilever length and strong adaptability to mechanical environment

Active Publication Date: 2021-02-19
XIAN AEROSPACE PROPULSION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that the structure of the existing air-operated stop valve is relatively complicated and it is difficult to adapt to the large-vibration dynamic environment, the present invention provides a small integrated high-pressure air-operated valve

Method used

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  • Small integrated high-pressure pneumatic control valve
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  • Small integrated high-pressure pneumatic control valve

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Embodiment Construction

[0031] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] Such as figure 1 As shown, a small integrated high-pressure air control valve includes a housing 1, a valve core 2, a spring 3, a spring seat 4 and a sealing assembly 5. The present invention is a normally closed high-pressure air control stop valve. When ventilating, the valve core 2 It is opened by overcoming the resistance; after degassing, the valve core 2 returns under the force of the spring 3 and closes reliably.

[0033] The housing 1 is provided with an inlet flow channel 11, a medium channel 13, a mounting cavity 14, a spring cavity 15 and a control cavity 16 which are sequentially connected and coaxial from the left end face to the right end face; the connection between the inlet flow channel 11 and the medium channel 13 is the first A tapered surface, matched with the valve core 2, is used to block t...

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Abstract

The invention provides a small integrated high-pressure pneumatic control valve, and solves the problems that an existing pneumatic control stop valve is relatively complex in structure and difficultto adapt to a large-vibration-force environment. The small integrated high-pressure pneumatic control valve comprises a shell, a valve element, a spring, a spring seat and a sealing assembly; an inletflow channel, a medium channel, a mounting cavity, a spring cavity and a control cavity which are sequentially communicated are formed in the shell; an outlet flow channel communicated with the medium channel is formed in the side wall of the shell; the valve core comprises a first blocking section, a second blocking section, a third blocking section and a fourth blocking section which are coaxially arranged in sequence; the first blocking section is located at the joint between the inlet flow channel and the medium channel; the second blocking section is arranged in the medium channel; the third blocking section is arranged in the mounting cavity, and a sealing assembly is arranged between the third blocking section and the mounting cavity; the fourth blocking section is arranged in thespring cavity, and an external thread is arranged at one end close to the control cavity; a small end of the spring seat is provided with a threaded hole connected with the fourth blocking section, and the outer circular surface of a large end is axially provided with a plurality of notches which are uniformly distributed along the circumference; an annular limiting boss is arranged on the springcavity; and the spring sleeves the fourth blocking section.

Description

technical field [0001] The invention relates to a high-pressure air control valve, in particular to a small integrated high-pressure air control valve for controlling medium on-off. Background technique [0002] In the high-pressure medium control system, air-operated shut-off valves are generally used to control the on-off of the main channel medium. The valve is open for ventilation and closed for degassing, has simple control, can be used repeatedly, and has a wide range of flow control. [0003] At present, most of the shells used in commonly used air-operated globe valves are split structures, including the medium chamber shell and the control chamber shell, which are connected into one body through threads or flanges. Two dynamic sealing structures are required to seal the medium and gas respectively, which makes the structure of this kind of air-operated globe valve relatively complicated, and because the medium chamber shell and the control chamber shell are connect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/04F16K1/36F16K1/32F16K1/46
CPCF16K17/04F16K1/36F16K1/32F16K1/46
Inventor 高曼谢宁陈维宇李小明雷恒冯军华李小龙
Owner XIAN AEROSPACE PROPULSION INST
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