|Table of Contents|

An application of sealing material for high-temperature resistance valve core in valve(PDF)

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

Issue:
2018年05期
Page:
61-65
Research Field:
工艺与材料
Publishing date:

Info

Title:
An application of sealing material for high-temperature resistance valve core in valve
Author(s):
WANG Lijun1;  2;  HUANG Aiqing1;  2;  TANG Meifang1;  2
1.Shanghai Institute of Space Propulsion, Shanghai 201112, China; 2.Shanghai Engineering Research Center of Space Engine, Shanghai 201112, China
Keywords:
PFA;  valve core;  high-temperature resistance material;  performance test
PACS:
V250.2-34
DOI:
-
Abstract:
Two experiments are conducted to meet the requirements of deep space exploration technology for high-temperature environment of valves.The sealing material PFA for high-temperature resistance valve core was chosen by means of valve action test at normal temperature, thermal cycling test in 10～90 ℃, thermal cycling test in 0～100 ℃and flow resistance test.The valve made from PFA successfully passed the thermal cycling test in -15～135 ℃, vacuum thermal test in -15～135 ℃, mechanical test and life test of 500 000 times.Its performance parameters such as spool stroke, leak rate and response characteristic stable in the experiment, which prove that the valve core sealing material can meet the high-temperature environmental requirements of deep space exploration technology for valves.This research can also provide a reference for design of other high-temperature valves.

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Last Update: 1900-01-01