Research Progress on Low-temperature Flange Sealing Technology for Chemical Pipelines
The use of colder nitrogen and helium gas can cool the BOG generated on LNG ships back into LNG,and the sealing of low-temperature flowing gas has always been a major problem.Based on the reliquefaction project,this article mainly analyzes the factors that affect the sealing effect of flanges in pipelines,and debugs and discusses the selection of flange gaskets and improvement of sealing methods under low temperature conditions.It is found that the leakage rate of low-temperature flanges is greatly reduced by adding low-temperature compensation disc springs and optimizing bolt pretightening force.This review aims to provide some guidance for low-temperature fluid sealing on ships.
万方数据
维普
