An experimental device for testing sealing performance under temperature-controllable high-pressure gas
A technology for sealing performance and testing experiments, which is applied in the use of liquid/vacuum for liquid tightness measurement, and by detecting the appearance of fluid at the leak point. The accuracy of volume measurement needs to be improved, and the leakage channel cannot be guaranteed, so as to shorten the charging and discharging time, improve the charging and discharging efficiency, and achieve the effect of stable pressure.
Active Publication Date: 2020-06-02
TSINGHUA UNIV
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Problems solved by technology
However, the current sealing performance testing devices for sealing rings have the following deficiencies: 1. The service environment of the sealing rings for hydrogen storage containers cannot be completely simulated—either they cannot be used in a high-pressure hydrogen environment, or they cannot be tested at different temperatures; 2. , The accuracy of leakage measurement needs to be improved: it cannot be guaranteed that the leakage channel is only at the test seal
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[0021] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.
[0022] The present invention will be further described in detail below with reference to the accompanying drawings and examples (illustrated by O-ring and hydrogen gas), but the embodiment of the present invention is not limited to this one.
[0023] like figure 1 and figure 2 As shown, an experimental device for testing sealing performance under temperature-controllable high-pressure gas includes an experimental box 3 and a sealing end cover 2. The experimental box 3 is a cylindrical rotary pressure vessel, and the bottom of the box is provided with cylindrical protrusions to Reduce the volume of sealed gas, shorten the filling and deflation time, and provide space for the temperature control device on the inner wall.
[0024] The sealing end cover 2 includes a cylindrical cover and a conical boss on the bottom of the cover. The top of the e...
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The invention discloses a sealing ring sealing performance test experiment device under controllable temperature and high pressure hydrogen, which comprises a leak detecting port, a sealing end cover,an experiment box body, a threaded pipeline interface, a heat exchange medium inlet, a heat exchange medium outlet, a test sealing ring, a hydrogen sensor, an outer seal, a cooling / heating shell anda cooling / heating cylinder, wherein the experiment box body is fixed on a working table; the sealing end cover and the experiment box body are fixedly connected; the gas cavity of the experiment box body is U-shaped; cooling and heating media are circulated through inner / outer medium tanks to realize temperature control in the experiment box; and the waist part of the box body is provided with a pressure-controlled pressure-stabilized pipe interface connected with an external pressure-stabilized system and a safety valve, thereby ensuring the pressure in the box is stable and avoiding safety accidents due to excessive pressure inside the box.
Description
technical field [0001] The invention belongs to the technical field of high-pressure gas sealing, and in particular relates to an experimental device for testing sealing performance under high-pressure gas with temperature controllability. Background technique [0002] In order to solve the problems of environmental pollution and energy consumption brought by the traditional automobile industry, the development of hydrogen energy and hydrogen fuel cell vehicles has received great attention from all over the world. In addition to hydrogen production, hydrogen transport, hydrogenation, and hydrogen use, hydrogen storage is also a major research topic in the development of hydrogen energy. At present, high-pressure gaseous hydrogen storage is the most commonly used hydrogen storage method. However, due to the high pressure of the high-pressure hydrogen storage medium, the specificity of the hydrogen medium (flammable and explosive, which has a certain impact on the performance...
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IPC IPC(8): G01M3/22
CPCG01M3/22
Inventor 郭飞吴凡项冲米尔阿地力江·阿木提黄毅杰贾晓红王玉明索双富李永健黄伟峰
Owner TSINGHUA UNIV