Shengpeng Zheng
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Research Interests
Shengpeng Zheng has a total of 7 co-authors. Here are the top co-authors by number of shared publications:
- Dongyu Wang
FTXT Energy Technology Co., Ltd., Shanghai 201804, China
1 shared publication - Jiepu Li
China Special Equipment Inspection and Research Institute, Beijing 100029, China
1 shared publication - Xiang Li
Key Laboratory of Safety of Hydrogen Energy Storage and Transportation Equipment, State Administration for Market Regulation, Beijing 100029, China
1 shared publication - Xiaoping Xiao
Southwest University of Science and Technology
1 shared publication - Xin Ma
Special equipment safety supervision inspection institute of Jiangsu province, Nanjing 210036, China
1 shared publication - Yitao Liu
China Special Equipment Inspection and Research Institute, Beijing 100029, China
1 shared publication
Latest Publications
- Open Access
- 7 September 2023
- Published by MDPI AG in Applied Sciences
- Vol. 13 (18) , 10100
Research on Dynamic Sealing Performance of Combined Sealing Structure under Extreme Working Conditions
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.
- 7 September 2023
- Published by MDPI AG in Applied Sciences
- Vol. 13 (18) , 10100
Open AccessResearch on Dynamic Sealing Performance of Combined Sealing Structure under Extreme Working Conditions
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.