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Cutter type isolating valve for maintaining open state of cutter based on medium pressure

A technology of open state and medium pressure, applied in the directions of sliding valves, valve devices, engine components, etc., can solve problems such as excess objects, and achieve the effect of avoiding chip removal and ensuring the flow path.

Active Publication Date: 2015-05-20
NO 11 INST OF NO 6 ACADEMY OF CHINA AEROSPACE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem that the existing cutter-type isolation valve will produce excess when the cutter is positioned, the present invention provides a cutter-type isolation valve that maintains the open state of the cutter based on medium pressure. The cutter of the isolation valve of the present invention Use medium pressure to maintain the position of the cutter, and use different sealing diameters to achieve the purpose of medium pressure to position the cutter

Method used

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  • Cutter type isolating valve for maintaining open state of cutter based on medium pressure

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Embodiment Construction

[0014] Such as figure 1 The igniter isolation valve shown is composed of a housing 1, a cutter 2, and a thin-walled nozzle 3, wherein the structure of the cutter is as follows: the front section 21 of the cutter, the channel 25 and the rear section 24 of the cutter are connected in sequence, and the front section of the cutter The medium action area 22 of 21 is smaller than the medium action area 23 of the cutter rear section 24 .

[0015] In order to bounce back when the cutter is positioned, the cutter also includes a buffer boss 4, which is fixed on the housing 1, and the contact end between the buffer boss 4 and the rear section of the cutter is a metal thin-walled tube 5. One end of the metal thin-walled tube 5 contacting the rear section of the cutter adopts an inner closing structure.

[0016] Principle of the present invention:

[0017] The liquid oxygen kerosene engine ignition agent isolation adopts the medium pressure to maintain the position structure design of t...

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Abstract

The invention relates to a cutter type isolating valve for maintaining an open state of a cutter based on medium pressure. The cutter type isolating valve comprises a shell and a cutter which is arranged in the shell, wherein the cutter comprises a cutter front section, a passage and a cutter rear section which are connected in sequence; and the medium acting area of the cutter front section is less than the medium acting area of the cutter rear section. According to the cutter type isolating valve, the technical problem that extra material is produced during cutter positioning of the conventional cutter type isolating valve is solved; the position of the cutter of the isolating valve is maintained by using the medium pressure; and the aim of positioning the cutter by using the medium pressure is fulfilled by using different sealing diameters.

Description

technical field [0001] The invention relates to a cutter-type isolation valve that maintains the open state of the cutter based on medium pressure, which can avoid some disadvantages of the traditional isolation valve such as chip loss when the cutter is positioned. Background technique [0002] The igniter isolation valve is an important part of the engine igniter. In order to reliably seal the igniter, the igniter isolation valve adopts a knife-type structure, but the existing knife-type isolation valve uses a cone wedge to maintain the position of the knife , prone to chipping problems. Contents of the invention [0003] In order to solve the technical problem that the existing cutter-type isolation valve will produce excess when the cutter is positioned, the present invention provides a cutter-type isolation valve that maintains the open state of the cutter based on medium pressure. The cutter of the isolation valve of the present invention The position of the cutter ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K3/26F16K3/314F16K3/30
Inventor 谢宁雷恒程亚威陈维宇冯军华贾景卫王志永
Owner NO 11 INST OF NO 6 ACADEMY OF CHINA AEROSPACE SCI & TECH