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research-article

Study on the Performance of New MMC Gasket

[+] Author and Article Information
Xianjun Zhou

College of Mechanical and Electronic Engineering, China University of Petroleum (East China), No. 66, Changjiang West Road, Huangdao District, Qingdao, Shandong, China, 266580
zxjqhy@126.com

Haodong Zhai

College of Mechanical and Electronic Engineering, China University of Petroleum (East China), No. 66, Changjiang West Road, Huangdao District, Qingdao, Shandong, China, 266580
zhaihaodong518@163.com

Weipeng Wen

Shanghai Micro Electronics Equipment Co., Ltd., No. 1525, Zhangdong Road, Zhangjiang Hi-Tech Park, Pudong, Shanghai, China, 201203
wenweipeng171@163.com

Yanze Wu

College of Mechanical and Electronic Engineering, China University of Petroleum (East China), No. 66, Changjiang West Road, Huangdao District, Qingdao, Shandong, China, 266580
wuyanze0226@163.com

1Corresponding author.

ASME doi:10.1115/1.4039122 History: Received October 24, 2016; Revised January 20, 2018

Abstract

The compression-resilience performance of new MMC gasket at different temperatures was studied by compression-resilience test, and the influences on sealing performance of gasket caused by internal pressure of medium and assembly stress were studied by sealing test. Then the influences on performance of gasket caused by internal pressure of medium, bolt pre-tightening force and temperature were studied through finite element method of ANSYS. According to the results of test and numerical analysis, conclusions are as follows: The compression-resilient performance of new MMC gasket at different temperatures is good. When the metal-to-metal contact occurs between flange and gasket, the contact stress of new MMC gasket is about 50MPa. When applying loads, the limiting ring of gasket is able to bear parts of bolt loads, and when reducing loads its resilience can compensate loss of gasket stress. In this case, the stress on sealing surface of gasket remains stable so that the leakage rate can keep in a stable range. Because of its unique structure in design, the inner contact stress of new MMC gasket increases with the rise of internal pressure of medium so that in a certain range the leakage rate changes gently, which shows that the gasket has a certain self-sealing ability. Besides, the new MMC gasket is able to adapt to high temperature and fluctuation of internal pressure of medium.

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