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《Lubrication Engineering》 2009-06
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Application of Preload Disc Spring in the High-pressure Hydrogenation Heat Exchanger

Cheng Xuejun Li Yingli Man Yanru Zhu Honglin(Refinery of Daqing Petrochemical Company,Daqing Heilongjiang 163711,China)  
The leakage causes of high-pressure heat exchangers in the refinery hydrocracking unit were analyzed,showing that the bolt preload is not enough causes frequent leakage of high-pressure heat exchanger.The preload disc spring was applied to compensate for the bolt preload.The results show that the preload disc can compensate for the relaxation of the bolt preload for the system fluctuations.This way can completely solve the leakage of high-pressure heat exchanger.
【CateGory Index】: TH135
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