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seal contact performance analysis of soft seals on high-pressure hydrogen charge valves

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2022年第4期23卷 247-256页

作者： Zhen-hao LIN Long-jie YU Ting-feng HUA Zhi-jiang JIN Jin-yuan QIAN Institute of Process Equipment College of Energy EngineeringZhejiang UniversityHangzhou310027China State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou310027China Institute of Wenzhou Zhejiang UniversityWenzhou325036China

The charge valve is an important element in the charging port of a high-pressure hydrogen storage cylinder(HP-HSC).It is normally closed after the HP-HSC is filled with *** the seal of the charge valve is damaged,it will seriously affect the stable operation of the hydrogen supply system and may even cause safety ***,the seal performance of the charge valve is *** this paper,finite element analysis(FEA)is carried out to analyze the seal contact performance of hydrogenated nitrile rubber(HNBR)gaskets in the seal pair of a charge *** effects of different pre-compressions,seal widths,and hydrogen pressures on the seal contact performance of the charge valve are *** contact pressure on the seal surface increases with the increase of *** a pre-compression of 2.5 mm,the maximum contact pressure without and with hydrogen pressure are 68.51 and 107.38 MPa,respectively.A contact gap appears in the inner ring of the seal surface with pre-compression below 0.15 *** contact gap occurs between the entire seal surface with a seal width of1 *** contact pressure on the seal surface and the width of the separation area between the seal surfaces increase with the increase of the seal *** contact gap between the seal surfaces is zero with a width of 2.5 *** width of the separation area between the seal surfaces decreases with the decrease of the hydrogen *** width of the separation area is reduced from 0.5 mm at 35 MPa to 0.17 mm at 15 *** work can be useful for improvement of the seal performance and of the design of the charge valve used in the HP-HSC.

关键词： Charge valve seal contact performance High-pressure hydrogen storage cylinder(HP-HSC) Finite element analysis(FEA)

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