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Lubrication scheme of flow control valve used in space(PDF)

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

Issue:
2012年04期
Page:
49-54
Research Field:
研究与设计
Publishing date:

Info

Title:
Lubrication scheme of flow control valve used in space
Author(s):
CHEN Zhan;  WANG Ke-li;  HE Wei-tao;  QI Zeng-qiang
Xi’an Aerospace Propulsion Institute, Xi’an 710100, China
Keywords:
flow control valvelubrication schemeion-gilding
PACS:
V434-34
DOI:
-
Abstract:
Since there are many movement components in the flow control valve which works in the pressure of less than 10-11 Pa, the liquid-lubrication is unsuitable for it. The valve pintle is marinated in the propellant (N2O4 and MON-1), so there is no mature solve scheme at present. In this paper, a lubrication scheme for the movement components of the valve is presented, in which the pairs of movement components that do not contact with propellant are made up of self-lubrication material or are wrapped up in a solid lubrication film; as for the the lubrication of the valve pintle, three methods are proposed such as physical vapor deposition diamond-like carbon (DLC) film, TiN-Au compound film and pure Au film. A brand-new ion-gilding scheme for the pintle lubrication was chosen according to the results of the tests and the comparison.

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Last Update: 1900-01-01