|Table of Contents|

Static mechanical characteristics of turbopump seal assembly in liquid rocket engine(PDF)

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

Issue:
2017年03期
Page:
17-21
Research Field:
研究与设计
Publishing date:

Info

Title:
Static mechanical characteristics of turbopump seal assembly in liquid rocket engine
Author(s):
XU Yunfei1;  2;  LIU Li1;  XU Xuejun1;  2;  LI Feng1;  2;  HUANG Daoqiong1;  2;  DUAN Jie3
1. Xi’an Aerospace Propulsion Institute, Xi’an 710100, China; 2. National Key Laboratory of Science and Technology on Liquid Rocket Engine, Xi’an 710100, China; 3. Academy of Aerospace Propulsion Technology, Xi’an 710100, China
Keywords:
liquid rocket engine;  seal assembly;  static mechanical characteristic;  sealing pressure distribution;  finite element method
PACS:
V434.21-34
DOI:
-
Abstract:
To rise the checking qualification rate of seal in turbopump end face in liquid rocket engine, the static mechanical characteristics of seal assembly is analyzed. The contact analysis model of seal assembly was set up with FEM. The simulating calculation for fit tolerance of graphite ring, bias of spring stiffness and checking pressure was performed to get the variation law of end-face deformation and sealing pressure distribution. The result indicates that the end face height difference of graphite ring upper surface is 7.2 μm at fit tolerance of 0.13 mm, the biggest different value of pressure distribution on end faces of moving ring and static ring is 0.1 MPa, which is caused by bias of spring stiffness, and the pressure distribution of sealing end-face appears in circular shape in the process of sealing checking.

References:

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Last Update: 1900-01-01