|Table of Contents|

Analysis for leakage fault of solenoid valve and its improvement(PDF)

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

Issue:
2018年05期
Page:
43-47
Research Field:
研究与设计
Publishing date:

Info

Title:
Analysis for leakage fault of solenoid valve and its improvement
Author(s):
GAO Man;  WANG Zhiyong;  LI Xiaoming
Xi'an Aerospace Propulsion Institute,Xi'an 710100,China
Keywords:
solenoid valve;  leakage;  simulation calculation;  improvement measure
PACS:
V432-34
DOI:
-
Abstract:
In view of the sealing instability of the solenoid valve seat, which occurred in the engine test and after its shutdown, two fault modes were found out.Simulation calculation for structural strength, dynamic characteristics and the flow field of the solenoid valve is carried out.In combination with the relevant test results, the effect of assembly stress and movement process on the sealing performance of the product is analyzed.It is found that the main reasons for the instability of the solenoid valve seat seal is the inappropriate assembly stress which causes uneven deformation of the sealing surface of the valve seat, and the impact and lateral fluid strength which lead to a deviation of the sealing block after outage of the solenoid valve, resulting in leakage increase of the seal.Accordingly, the corresponding improvement measures are put forward and verified by hot-fire test.

References:

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