Research on Dynamic Sealing Performance of Combined Sealing Structure under Extreme Working Conditions
Source abstract
Abstract
This study investigates the sealing performance of a combined sealing structure under extremely high and low temperature conditions, considering potential issues like high-temperature aging and low-temperature brittle fracture, which can lead to sealing failure. EPDM rubber underwent uniaxial compression tests at high, low, and normal temperatures, then the sealing performance under extreme working conditions was compared with that under normal temperature conditions. Additionally, the influences of gasket parameters and gas pressure on the sealing performance were analyzed. The result shows that compared with the normal temperature conditions, the maximum von Mises stress is reduced by 65% and the effective sealing length and the maximum contact pressure is reduced by 40% under the high temperature conditions, while the maximum von Mises stress is increased by 7 times and the maximum contact pressure is increased by a remarkable 7 times under the low temperature conditions. In the range of 10–100 MPa, the increase in gas pressure aggravates the O-ring stress concentration and improves the sealing performance relatively. When the thickness of gasket is 0.85–1.05 mm, the stress concentration of the O-ring is lighter and the sealing performance is better.
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Research context
OpenAlex topics: Tribology and Wear Analysis · Tribology and Lubrication Engineering · Mechanical stress and fatigue analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Manufacturing Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
China Special Equipment Inspection & Research Institute, Beijing 100029, China
Key Laboratory of Safety of Hydrogen Energy Storage and Transportation Equipment for State Market Regulation, Beijing 100029, China
Special Equipment Safety Supervision Inspection Institute of Jiangsu Province, Nanjing 210036, China
FTXT Energy Technology Co., Ltd., Shanghai 201804, China
Funding
National Key Research and Development program of China · Science and Technology Program of CSEI · CSEI secondary discipline
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