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Low-temperature valve testing device

A test device and cryogenic valve technology, applied in the direction of measuring device, fluid tightness test, machine/structural component test, etc., can solve problems such as service life reduction, long stud, leakage, etc., to reduce torque, reduce The effect of length

Active Publication Date: 2014-05-07
ZHANGJIAGANG FURUI SPECIAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pressure test tooling of the traditional cryogenic valve is to add two flanges at the inlet and outlet of the ball valve. The flange is provided with a slot and a gasket. The inlet and outlet ends of the cryogenic valve are in the slot and contact with the gasket. The studs connect the two flanges so that differential pressure is generated between the flanges and the inlet and outlet ends of the cryogenic valve to achieve sealing; in this way, the studs are usually longer, and the sealing gasket is difficult to compress evenly, which is prone to leakage
The length of the stud is long, so it is easy to generate additional torque on the cryogenic valve, resulting in a decrease in service life, and the sealing effect is guaranteed

Method used

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Embodiment Construction

[0016] The present invention will be described in further detail below through specific examples.

[0017] Such as figure 1 , 2 As shown, a test device for a cryogenic valve 11 includes a first sealing support plate 1, a second sealing support plate 4, a first connecting plate 3 and a second connecting plate 6, an outlet stopper assembly and an inlet stopper sleeve Hole assembly, the first sealing support plate 1 and the second sealing support plate 4 are flanges, on which are provided test medium through holes, the test medium through holes are provided with connectors 8, the test medium through holes and the cryogenic valve The inner cavity of 11 is connected; the first sealing support plate 1 is provided with an inlet slot 13 that cooperates with the outlet edge of the cryogenic valve 11, and a sealing ring 9 is arranged in the outlet slot 10; the second sealing support The plate surface of the plate 4 is provided with an inlet slot 13 that matches the inlet edge of the c...

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Abstract

The invention discloses a low-temperature valve testing device which comprises a first sealing supporting plate, a second sealing supporting plate, a first connecting plate, a second connecting plate, an outlet stopping block component and an inlet stopping block component. When the testing device is used, the first connecting plate and the second connecting plate are mounted on the periphery of the outlet end of a low-temperature valve and the periphery of the inlet end of the low-temperature valve in a sleeved mode and are stopped and supported by the outlet stopping block component and the inlet stopping block component, the first connecting plate and the first sealing supporting plate are fixed through a fastener, and the second connecting plate and the second sealing supporting plate are fixed through a fastener. The testing device solves the problem that according to an existing testing device, leakage easily happens, the torque is reduced by shortening the length of a stud, the sealing performance of the low-temperature valve and the sealing supporting plates is good, and normal operation of a low-temperature valve test is guaranteed.

Description

technical field [0001] The invention relates to a test device for a cryogenic valve. The cryogenic valve is used in pipelines of low-temperature medium such as liquid oxygen, liquid argon, liquid nitrogen and liquefied natural gas (LNG), and plays a role of cutting off and connecting the low-temperature medium gas. . Background technique [0002] The sealing performance of cryogenic valves is one of the main indicators for evaluating the quality of valves, so it needs to be tested for sealing before leaving the factory. The pressure test tooling of the traditional cryogenic valve is to add two flanges at the inlet and outlet of the ball valve. The flange is provided with a slot and a gasket. The inlet and outlet ends of the cryogenic valve are in the slot and contact with the gasket. The studs connect the two flanges so that differential pressure is generated between the flanges and the inlet and outlet ends of the cryogenic valve to achieve sealing; in this way, the studs ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/00
Inventor 伍国东胡晨曦王瑞东周晓会张宏豫张飞
Owner ZHANGJIAGANG FURUI SPECIAL EQUIP CO LTD
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