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System for testing fatigue performance of material in low-temperature liquid hydrogen environment

A fatigue performance test, liquid hydrogen technology, applied in the analysis of materials, the use of repetitive force/pulse force testing of material strength, measurement devices, etc., can solve problems such as material fatigue, and achieve the effect of avoiding hydrogen leakage

Pending Publication Date: 2022-07-22
EAST CHINA UNIV OF SCI & TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a material fatigue performance testing system in a low-temperature liquid hydrogen environment, aiming to solve the technical problems in the prior art in testing the fatigue performance of materials in a low-temperature liquid hydrogen environment

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  • System for testing fatigue performance of material in low-temperature liquid hydrogen environment
  • System for testing fatigue performance of material in low-temperature liquid hydrogen environment
  • System for testing fatigue performance of material in low-temperature liquid hydrogen environment

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Embodiment Construction

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] like Figures 1 to 7 As shown, the present embodiment provides a low-temperature liquid hydrogen environment material fatigue performance testing system, including a jacket cover 4, a hydrogen sensor is arranged on the inner top of the jacket cover 4; a frame 7, a liquid hydrogen sensor are arranged inside the jacket cover 4 Tank 5 and liquid nitrogen tank 6; the rack 7 is provided with a loading mechanism 1 and a liquid hydrog...

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Abstract

The invention discloses a material fatigue performance test system in a low-temperature liquid hydrogen environment, and relates to the technical field of mechanical performance test platforms, the system mainly comprises a jacket cover, and a hydrogen sensor is arranged at the top in the jacket cover; a rack, a liquid hydrogen tank and a liquid nitrogen tank are arranged in the jacket cover; a loading mechanism and a liquid hydrogen containing mechanism are arranged on the rack, the loading mechanism is connected with the rack, and the bottom of the loading mechanism extends into the liquid hydrogen containing mechanism; the liquid hydrogen tank and the liquid nitrogen tank are both communicated with the liquid hydrogen containing mechanism; and the loading mechanism is used for providing tension or pressure for the sample. A cooling groove is formed in the liquid hydrogen containing mechanism and located around the sealing gasket, the cooling groove is communicated with the thermostat, the temperature around the sealing gasket is kept through the thermostat, the sealing gasket is prevented from being in effect due to the too low temperature, and therefore hydrogen leakage is avoided. The jacket cover is used for guaranteeing test safety when hydrogen leaks, the hydrogen sensor is used for monitoring whether hydrogen leaks or not, and if leakage occurs in the test, gas in the jacket cover can be discharged to a specific environment.

Description

technical field [0001] The invention relates to the technical field of mechanical performance testing platforms, in particular to a fatigue performance testing system for materials in a low temperature liquid hydrogen environment. Background technique [0002] Hydrogen energy is considered to be a promising secondary energy source, which can be obtained through primary energy, secondary energy and industrial fields, and has the advantages of clean low carbon, high calorific value, and high conversion rate. The characteristics of large reserves, zero pollution and high efficiency of hydrogen energy will become a key part of China's construction of a diversified energy system. However, when the structural metal is used in the hydrogen environment for a long time, the hydrogen embrittlement phenomenon will inevitably occur, which will lead to the decline of the mechanical properties of the metal and the reduction of the service life. This poses a huge safety hazard to the tran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/32G01N3/02
CPCG01N3/32G01N3/02G01N2203/0073G01N3/08G01N2203/0069G01N2203/0228
Inventor 张显程涂善东刘利强谈建平孙彬涵石俊秒王润梓王继
Owner EAST CHINA UNIV OF SCI & TECH
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