An inner inclination angle test device that can analyze the influence of the cross-sectional diameter of the o-ring on the high-pressure sealing performance
A technology of high-pressure sealing and testing equipment, which is applied in the direction of machine sealing ring testing, liquid tightness measurement using liquid/vacuum degree, and measurement of fluid growth and deceleration rates, etc., which can solve the difficult and difficult analysis of rubber O-rings Section diameter selection increase and other issues
Active Publication Date: 2021-08-17
TSINGHUA UNIV +1
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Problems solved by technology
However, the current test device mainly realizes the analysis of the influence of the diameter change of different rubber O-rings. The test device for the influence of the cross-sectional diameter of the O-ring on the high-pressure sealing performance is not mature enough, resulting in the rubber O-rings with different cross-sectional diameters. The analysis of the highest sealing medium pressure is difficult, which adds difficulties to the selection of the cross-sectional diameter of the rubber O-ring for high-pressure hydrogen
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[0032] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.
[0033] refer to figure 1 , figure 2 , image 3 , an internal inclination angle test device that can analyze the influence of the cross-sectional diameter of the O-ring on the high-pressure sealing performance, including a cylinder 5 and its movable cover 4, the middle and lower part of the movable cover 4 extends into the cylinder 5 and connects with the cylinder 5, and the movable The lower part of the cover 4 is a conical structure, and the corresponding inner wall of the cylinder body 5 is a conical surface structure matching the conical structure. The O-ring 7 for testing is arranged in the annular sealing groove on the outer wall of the conical structure. The rotation is realized by the cooperation of the protruding spiral block on the outer wall of the middle part with the spiral groove on the inner wall of the cylinder body 5 , and the...
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An internal inclination angle testing device that can analyze the influence of the cross-sectional diameter of the O-ring on the high-pressure sealing performance. The O-ring is set in the annular sealing groove on the outer wall of the conical structure. The movable cover rotates through the cooperation of the spiral block on the outer wall of the middle part and the spiral groove on the inner wall of the cylinder. For the air pipeline, the middle part of the movable cover is an annular protrusion, and the spiral block is arranged on the bottom side outside the annular protrusion. The spiral surface has an inner inclination angle. Match the characteristic angles associated with the helical block. The invention realizes the control of the cross-section diameter of the O-ring for testing by changing the matching gap between the sealing groove at the bottom of the movable cover and the cone surface of the cylinder, and realizes the gas recovery, overpressure overflow and pressure fluctuation of the test device through the cooperation of the pressure detection gauge and the valve. Down unloading.
Description
technical field [0001] The invention belongs to the technical field of high-pressure gas sealing, and in particular relates to an inner inclination angle testing device capable of analyzing the influence of the section diameter of an O-ring on the high-pressure sealing performance. Background technique [0002] The sealing part is an indispensable and important part of the high-pressure hydrogen storage container, and it is often the weakest link, especially in the high-pressure hydrogen environment, its use conditions are more severe. High-pressure hydrogen sealing technology is an essential key technology to ensure the safe and reliable use of high-pressure hydrogen storage containers. The quality of the sealing effect directly affects whether the high-pressure hydrogen storage container can maintain the required internal pressure and the possibility of hydrogen leakage, and then It affects the life safety of relevant operators and the property safety of equipment. Theref...
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IPC IPC(8): G01M3/26G01M13/005
CPCG01M3/26G01M13/005
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