Gas drive combined valve suitable for middle-high pressure difference sealing detection

A gas-driven combination valve and sealing detection technology, which is applied to valve details, multi-way valves, valve devices, etc., can solve the problems of limiting the service life of the air-tightness detection detection range, and achieve improved service life, pressure resistance, The effect of reducing loss

Inactive Publication Date: 2015-12-02
NINGBO QINGYING ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional slide valve structure limits the detection range and service life of the air tightness test, which has become a major shortcoming of the dry test.

Method used

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  • Gas drive combined valve suitable for middle-high pressure difference sealing detection
  • Gas drive combined valve suitable for middle-high pressure difference sealing detection
  • Gas drive combined valve suitable for middle-high pressure difference sealing detection

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing and embodiment the patent of the present invention is further described.

[0019] This preferred embodiment is figure 1 To such as image 3 It is a gas-driven combination valve suitable for medium and high pressure differential pressure seal detection, including valve seat 7, valve body 6, valve core 3, spring 2, valve cover 1, special plug 4 and air circuit system, etc. The whole valve is normally in a closed state, and the spring 2 is kept slightly stressed. When the valve body needs to be opened, the gas enters the combination valve through the air passage hole 5 on the side wall of the valve body, contacts the upper wall of the valve core 3, and the spring 2 is compressed by force, and the special plug 4 moves up with the valve core 3 and contacts with the valve seat 7. The small end faces are separated and contacted, and the gas flows into the cavity of the valve body along with the air intake path in the valve seat ...

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Abstract

The invention discloses a gas drive combined valve suitable for middle-high pressure difference sealing detection, and belongs to the field of valves. The gas drive combined valve comprises a valve seat, a valve body, a valve element, a valve deck, a specially-made plug and the like. The valve body is provided with a control gas path and connected with the valve seat through screws. The valve seat is provided with three side wall gas paths and three bottom gas paths. The valve element is arranged in the valve body and makes the combined valve normally closed under the effect of spring force. Gas is charged into the control gas path to eject the valve element open, so that the valve element is separated from the valve seat. Gas is charged into the valve body through a gas inlet path of the valve seat and then enters the other two gas outlet paths of the valve seat. The combined valve is simple and ingenious in structure; traditional linear contact sealing is changed into surface contact sealing, so that the effect is better; besides, the combined valve is low in cost, convenient to maintain, long in service life, wide in detection pressure range and suitable for various high-precision gas tightness detection instruments and devices.

Description

technical field [0001] The present invention relates to the field of airtight detection, in particular to a gas-driven combination valve applicable to medium and high pressure sealing detection, which can increase the detection pressure range of airtightness detection, and the normally closed state can also increase the service life of the valve . Background technique [0002] With the development of industrialization, the traditional water testing method has exposed its disadvantages, and dry air tightness testing has become a development trend. However, the traditional slide valve structure limits the detection range and service life of the air tightness test, which has become a major shortcoming of the dry test. Therefore, it has become an important research topic for technicians in this industry to develop a high-service life gas-driven combined valve suitable for various pressure ranges. Contents of the invention [0003] The technical problem to be solved by the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K11/07F16K31/122F16K27/04
CPCF16K11/07F16K27/041F16K31/1221
Inventor 王贤成陈虔炜陈明豪沈超杰曹佳辉
Owner NINGBO QINGYING ELECTRONICS TECH CO LTD
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