|Table of Contents|

Influence of low temperature environment on the regulation characteristics of gas pressure reducing valve(PDF)

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

Issue:
2020年06期
Page:
82-89
Research Field:
研究与设计
Publishing date:

Info

Title:
Influence of low temperature environment on the regulation characteristics of gas pressure reducing valve
Author(s):
TIAN Chuan1; LIAN Yingqi2; LEI Xiaofei2; LUO Daliang2
(1.Xi'an Military Representative Bureau of Air Force Equipment, Xi'an 710043, China; 2.Xi'an Aerospace Propulsion Institute, Xi'an 710100, China)
Keywords:
pressure reducing valve(PRV);  low temperature;  outlet pressure;  pressure peak
PACS:
V432
DOI:
-
Abstract:
The gas pressure reducing valve is the key module of the orbital and attitude control engine, and its characteristic of outlet pressure directly affects the thrust performance and working reliability of the engine system.Through the influence analysis of the PRV in low temperature environment, there are three factors affecting the stress and regulation characteristics of the valve spool.The low-temperature dynamic characteristics of the PRV under the influence of three factors are simulated, and the relative change trend of the starting pressure peak and the steady-state outlet pressure of the PRV are obtained in low temperature environment.It is considered that the starting pressure peak and the steady-state outlet pressure of the valve increase with the decrease of temperature.The change of diaphragm characteristics in low temperature environment is the main factor affecting the change of outlet pressure.Through the fitting function of the starting pressure peak value and the steady-state outlet pressure of the PRV in low temperature environment, the low-temperature starting peak value and steady-state outlet pressure can be estimated to meet the requirements of the engine system parameter design in low tempserature environment.

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