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A contact characteristic analysis system for high-pressure gas sealing

A technology of contact characteristics and high-pressure gas, which is applied in liquid tightness measurement using liquid/vacuum degree, by measuring the increase and deceleration rate of fluid, testing of machine/structural components, etc., can solve problems such as analysis of contact characteristics of unsealable parts

Active Publication Date: 2021-11-23
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing test system in China is not mature enough to effectively realize the detection of sealing performance and the analysis of the contact characteristics of seals in a high-pressure hydrogen environment.

Method used

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  • A contact characteristic analysis system for high-pressure gas sealing
  • A contact characteristic analysis system for high-pressure gas sealing
  • A contact characteristic analysis system for high-pressure gas sealing

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Experimental program
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Embodiment Construction

[0023] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0024] like figure 1 As shown, a contact characteristic analysis system for high-pressure gas sealing in the present invention includes a high-pressure cylinder 3 connected by a bolt connector 2 and its cover 8 , and a seal 9 is provided between the top end surface of the high-pressure cylinder 3 and the cylinder cover 8 . The bottom of the high-pressure cylinder 3 has a hydrogen inlet / outlet 5 for hydrogen filling and release, and the hydrogen inlet / outlet 5 is connected to a pressure gauge 4 for pressure detection, pressure feedback and overpressure / underpressure alarm. The outer wall of the cylinder cover 8 is provided with an annular sealing groove, the sealing member 6 to be tested is arranged in the annular sealing groove, a shape memory alloy detection module 7 is arranged around the sealing member 6 to be tested, and the inner wall of th...

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Abstract

The invention discloses a contact characteristic analysis system for high-pressure gas sealing, which includes a leak detection point, a bolt connection piece, a high-pressure cylinder, a pressure gauge, a hydrogen gas inlet / outlet port, a seal to be tested, a shape memory alloy detection module, and a cylinder cover ,Seals. In the present invention, a shape memory alloy detection module is added to the sealing surface of the seal to be tested, and a heating block, an upper cushion, a shape memory alloy, an inner distance measuring piece, a lower cushion, a support block, a compression spring, and an outer distance measuring piece are used together. Using the temperature deformation memory effect of the shape memory alloy, the deformation of the seal to be tested during the system test is recorded, and then the deformation and contact of the seal to be tested in the high-pressure hydrogen environment are obtained through the deformation of the shape memory alloy and the compression spring. The magnitude of the stress realizes the analysis of the contact characteristics of the seal to be tested.

Description

technical field [0001] The invention belongs to the technical field of high-pressure gas sealing, and in particular relates to a contact characteristic analysis system for high-pressure gas sealing. Background technique [0002] The shortage of energy resources and environmental degradation caused by excessive reliance on fossil fuels are serious and urgent problems faced by countries all over the world. Countries all over the world are actively promoting the development of clean, environmentally friendly and efficient energy. Due to its various sources, high energy conversion rate, no pollution, zero emissions, storability, and renewable advantages, hydrogen energy has become a secondary energy source with great development prospects. Using hydrogen energy as the next generation energy carrier is expected to solve the problem of energy supply. , safety and cleanliness are the key issues. In view of this, all countries in the world are stepping up the planning and developme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00G01M3/26
CPCG01M3/26G01M13/00
Inventor 郭飞黄毅杰王文虎项冲张兆想程甘霖谭磊贾晓红王玉明
Owner TSINGHUA UNIV