|Table of Contents|

Matching optimization design of U-E metal seal structure considering flange deformation (PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2023年03期
Page:
115-122
Research Field:
目次
Publishing date:

Info

Title:
Matching optimization design of U-E metal seal structure considering flange deformation
Author(s):
WANG Chenwei;  YAN Fangqi;  LI Zhijun;  CHANG Tao;  CHEN Jianhua
(Xi'an Aerospace Propulsion Institute, Xi'an 710100, China)
Keywords:
metal seal;  flange deformation;  specific-pressure;  matching optimization
PACS:
V261.34
DOI:
-
Abstract:
Aiming at the seal leakage problem of liquid rocket engine caused by large diameter flange deflection, high temperature and high pressure, the flange deformation was analyzed and the specific-pressure of the U-E metal seal was illustrated by employing the Walters method and virtual simulation experiment. Further, the match of main and secondary height of U-E seal was designed. On this basis, the cross-section of U-E seal was optimized by orthogonal experiment with the obtained flange deformation. The results show that the seal reduction decreases and the springback increases caused by flange deflection; the specific-pressure of present U-E seal is not appropriate and is improved with the method of both increasing seal compression and the height difference of the main and secondary seal, as well as implementing the structure optimization of seal by orthogonal experiment. The optimized structure is tested and validated.

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