Internal inclination angle testing device capable of analyzing influence of section diameter of O-shaped ring on high-pressure sealing performance

Abstract

An internal inclination angle testing device capable of analyzing the influence of the section diameter of an O-shaped ring on the high-pressure sealing performance comprises a cylinder, the middle lower portion of a movable cover extends into the cylinder to be connected with the cylinder, the lower portion of the movable cover is of a conical structure, and the O-shaped ring for testing is arranged in an annular sealing groove in the outer side wall of the conical structure. The movable cover is matched with a spiral groove in the inner side wall of the barrel through a protruding spiral block on the outer side wall of the middle to achieve rotation, the bottom of the barrel is communicated with an air inlet pipeline and an air outlet pipeline, an annular protrusion is arranged in the middle of the movable cover, the spiral block is arranged on the bottom side outside the annular protrusion, and the spiral face is provided with an inner inclination angle, correspondingly, spiral grooves are uniformly distributed in the cylinder body, and the characteristic angle of the spiral groove is matched with the related characteristic angle of the spiral block. The section diameter of theO-shaped ring for testing is controlled by changing the fit clearance between the sealing groove in the bottom of the movable cover and the conical surface of the barrel, and gas recovery, overpressure overflow and unloading under pressure fluctuation of the testing device are achieved through cooperation of the pressure detection meter and the valve.

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...

AI Technical Summary

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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