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On-line Access: 2022-05-10

Received: 2021-08-17

Revision Accepted: 2021-12-15

Crosschecked: 2022-05-11

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Jin-yuan Qian


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Journal of Zhejiang University SCIENCE A 2022 Vol.23 No.4 P.247-256


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

Author(s):  Zhen-hao LIN, Long-jie YU, Ting-feng HUA, Zhi-jiang JIN, Jin-yuan QIAN

Affiliation(s):  Institute of Process Equipment, College of Energy Engineering, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   qianjy@zju.edu.cn

Key Words:  Charge valve, Seal contact performance, High-pressure hydrogen storage cylinder (HP-HSC), Finite element analysis (FEA)

Zhen-hao LIN, Long-jie YU, Ting-feng HUA, Zhi-jiang JIN, Jin-yuan QIAN. Seal contact performance analysis of soft seals on high-pressure hydrogen charge valves[J]. Journal of Zhejiang University Science A, 2022, 23(4): 247-256.

@article{title="Seal contact performance analysis of soft seals on high-pressure hydrogen charge valves",
author="Zhen-hao LIN, Long-jie YU, Ting-feng HUA, Zhi-jiang JIN, Jin-yuan QIAN",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Seal contact performance analysis of soft seals on high-pressure hydrogen charge valves
%A Zhen-hao LIN
%A Long-jie YU
%A Ting-feng HUA
%A Zhi-jiang JIN
%A Jin-yuan QIAN
%J Journal of Zhejiang University SCIENCE A
%V 23
%N 4
%P 247-256
%@ 1673-565X
%D 2022
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A2100395

T1 - Seal contact performance analysis of soft seals on high-pressure hydrogen charge valves
A1 - Zhen-hao LIN
A1 - Long-jie YU
A1 - Ting-feng HUA
A1 - Zhi-jiang JIN
A1 - Jin-yuan QIAN
J0 - Journal of Zhejiang University Science A
VL - 23
IS - 4
SP - 247
EP - 256
%@ 1673-565X
Y1 - 2022
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A2100395

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 hydrogen. If 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 problems. Therefore, the seal performance of the charge valve is important. In 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 valve. The effects of different pre-compressions, seal widths, and hydrogen pressures on the seal contact performance of the charge valve are analyzed. The contact pressure on the seal surface increases with the increase of pre-compression. With 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 mm. The contact gap occurs between the entire seal surface with a seal width of 1 mm. The contact pressure on the seal surface and the width of the separation area between the seal surfaces increase with the increase of the seal width. The contact gap between the seal surfaces is zero with a width of 2.5 mm. The width of the separation area between the seal surfaces decreases with the decrease of the hydrogen pressure. The width of the separation area is reduced from 0.5 mm at 35 MPa to 0.17 mm at 15 MPa. This work can be useful for improvement of the seal performance and of the design of the charge valve used in the HP-HSC.




Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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