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Simulation and experiment research on high-pressure shock overshoot phenomenon of pressure reducing valve(PDF)

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

Issue:
2015年05期
Page:
72-76
Research Field:
研究与设计
Publishing date:

Info

Title:
Simulation and experiment research on high-pressure shock overshoot phenomenon of pressure reducing valve
Author(s):
ZHU Jianguo;  WEI Xuefeng;  SUN Liang
Xi’an Aerospace Propulsion Institute, Xi’an 710100, China
Keywords:
high pressure shock;  oscillation;  overshoot;  simulation analysis;  experiment research
PACS:
V434-34
DOI:
-
Abstract:
In allusion to the overshoot and oscillation phenomena of a certain forward unloading pressure reducing valve, caused by high-pressure shock, the dynamic simulation model of pressure reducing valve and pressurizing system was established with AMEsim software. The influence of valve spool opening, current-limiting orifice and pipe on exit pressure is analyzed. The technical measures of adding the current-limiting orifice in front of valve and reducing the valve spool opening are confirmed to reduce the exit pressure effectively. The engineering development problems were solved with these technical measures, which passed the evaluation by high pressure shock test and overall system test. The exit pressure of the improved valve is smooth, and has no overshoot and obvious oscillation phenomena. The results show that the technical measures are general-purpose for improving capability of resist high-

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