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CSME 2022/04
Volume 43 No.2
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143-151
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Optimization of Metal Skeleton of Fishbone Gasket and Performance Test
Zhou Xianjun a, Li Jianhua a and Chen Chunlei a
aCollege of Mechanical and Electronic Engineering, China University of Petroleum (East China), No. 66, Changjiang West Road, Huangdao District, Qingdao 266580, Shandong, China.
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Abstract:
With the continuous improvement of sealing performance requirements of modern mechanical equipment, many conventional gaskets have been unable to meet their working requirements. In this paper, a new type of fishbone gasket was studied. Firstly, ANSYS finite element analysis software and orthogonal optimization were used to simulate the mechanical properties of its metal skeleton, and the optimal combination of skeleton parameters was obtained. After optimization, the compression rate of the metal skeleton increased by 10.26% and the springback rate increased by 26.98% on the original basis. Compression springback tests were carried out on universal seals testing equipment under different loads and temperatures. Data analysis showed that gasket performance was relatively stable in the test temperature range. Gasket and flange were basically compacted after gasket surface stress exceeded 40 MPa, and the lower limit of bolt preload could be determined accordingly. Gaskets had excellent sealing performance, and self-sealing structure enabled them to maintain the standard leakage rate at lower assembly stress.
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Keywords: fishbone gasket, metal skeleton, orthogonal optimization, mechanical property, leakage rate.
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*Corresponding author; e-mail:
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©
2022
CSME , ISSN 0257-9731
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