Vacuum stop valve under zero gravity

A zero-gravity, globe valve technology, used in lift valves, valve details, safety valves, etc., can solve problems such as small mass-to-volume ratio, small operating force, and inability to adapt to cyclic temperature changes, to ensure accurate positioning and release internal pressure. , the effect of preventing system damage

Active Publication Date: 2015-05-13
BEIJING SATELLITE MFG FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, ball valves are mostly used in vacuum globe valves, which have good sealing performance and reliable operation, but due to the limitations of sealing materials and structures, they cannot adapt to changes in cycle temperature, and when the number of operations is large, friction between rotating parts and filling sealing materials may be redundant. It is difficult to meet the cleanliness requirements of the aerospace gas system
[0004] National defense research requires a life cycle covering various mechanical environments such as ground, launch, orbit, and return stages. It not only requires small mass-to-volume ratio, wide temperature range, small operating force, rapid switching, and long working life, but also can adapt to the space environment. , Valves with multiple indicators such as ergonomics and cleanliness, the above structure cannot meet the requirements

Method used

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  • Vacuum stop valve under zero gravity
  • Vacuum stop valve under zero gravity
  • Vacuum stop valve under zero gravity

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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 , 2 As shown, the present invention consists of identification plate 1, gasket 2, screw 3, handle 4, gasket 5, nut 6, valve core 7, upper cover 8, small radial sealing ring 9, antifriction plate 10, spring 11, valve cap 12. Seal retaining ring 13, large radial sealing ring 14, axial sealing ring 15, valve body 16, the right side is the inlet, and the lower side is the outlet.

[0026] The valve core 7 and the spring 11 are installed in the valve body 16 through the valve cap 12, and the valve cap 12 and the valve body 16 are connected by threads.

[0027] The handle 4 is connected to the valve core 7 through the gasket 5 and the nut 6, and transmits the operating force of the astronaut's handle to the valve core 7, so that the valve core 7 can move back and forth axially in the valve body 16, thereby realizing the switching action of the valve...

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Abstract

The invention discloses a vacuum stop valve under zero gravity. The vacuum stop valve comprises a handle, a valve element, a spring, a valve cap and a valve body. The valve element and the spring are installed in the valve body through the valve cap. One end of the valve cap is in threaded connection with the valve body and is provided with a deep groove and a shallow groove. One end of the handle provided with tenons is placed in the grooves and is used in cooperation with the valve cap. A positioning groove is formed in the bottom end face of a threaded hole in the valve cap and is used for installation of the spring. An annular sealing groove is formed in the inner wall of a through hole of the valve cap and is used for installation of a small radial seal ring. The small radial seal ring plays a role in guiding and dust prevention and prevents the valve element from waggling in the radial direction in the axial moving process. Axial soft seat sealing is adopted for internal sealing of the vacuum stop valve, sealing force is provided by the spring, and therefore reliable sealing of multiple times of opening and closing operations can be achieved; a plunger type bi-radial seal ring and a sealing retainer ring are adopted for external sealing, the two rings are mutual backups, and therefore the reliability of the valve is improved.

Description

technical field [0001] The invention relates to a vacuum cut-off valve under zero gravity, which belongs to the technical field of aerospace valves. Background technique [0002] The aerospace gas system is a pipeline system that supplies oxygen, nitrogen, air, etc. to other systems on the spacecraft, including various solenoid valves and manual valves. Among them, the vacuum stop valve is manually operated by the astronauts, and is used for the switch control of the gas supply passage. [0003] At present, ball valves are mostly used in vacuum globe valves, which have good sealing performance and reliable operation, but due to the limitations of sealing materials and structures, they cannot adapt to changes in cycle temperature, and when the number of operations is large, friction between rotating parts and filling sealing materials may be redundant. It is difficult to meet the cleanliness requirements of the aerospace gas system. [0004] National defense research requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/00F16K1/46F16K1/32
CPCF16K1/00F16K1/46F16K17/0486F16K35/027F16K37/0008F16K41/06
Inventor 杜国飞邹丹赵健李咚咚谢文李磊磊
Owner BEIJING SATELLITE MFG FACTORY
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