JZUS - Journal of Zhejiang University SCIENCE

Journal of Zhejiang University SCIENCE A 2013 Vol.14 No.2 P.137-146

http://doi.org/10.1631/jzus.A1200146

Numerical simulation and structure improvement of double throttling in a high parameter pressure reducing valve*

Author(s): Zhi-jiang Jin¹, Lin Wei¹, Li-long Chen², Jin-yuan Qian¹, Ming Zhang²
Affiliation(s): 1. Institute of Chemical Machinery and Process Equipment, Zhejiang University, Hangzhou 310027, China; more
Corresponding email(s): jzj@zju.edu.cn
Key Words: Numerical simulation, Pressure and temperature reducing system, Pressure reducing valve (PRV), Double throttling, Structural improvement

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Zhi-jiang Jin, Lin Wei, Li-long Chen, Jin-yuan Qian, Ming Zhang. Numerical simulation and structure improvement of double throttling in a high parameter pressure reducing valve[J]. Journal of Zhejiang University Science A, 2013, 14(2): 137-146.

@article{title="Numerical simulation and structure improvement of double throttling in a high parameter pressure reducing valve",
author="Zhi-jiang Jin, Lin Wei, Li-long Chen, Jin-yuan Qian, Ming Zhang",
journal="Journal of Zhejiang University Science A",
volume="14",
number="2",
pages="137-146",
year="2013",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1200146"
}

%0 Journal Article
%T Numerical simulation and structure improvement of double throttling in a high parameter pressure reducing valve
%A Zhi-jiang Jin
%A Lin Wei
%A Li-long Chen
%A Jin-yuan Qian
%A Ming Zhang
%J Journal of Zhejiang University SCIENCE A
%V 14
%N 2
%P 137-146
%@ 1673-565X
%D 2013
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1200146

TY - JOUR
T1 - Numerical simulation and structure improvement of double throttling in a high parameter pressure reducing valve
A1 - Zhi-jiang Jin
A1 - Lin Wei
A1 - Li-long Chen
A1 - Jin-yuan Qian
A1 - Ming Zhang
J0 - Journal of Zhejiang University Science A
VL - 14
IS - 2
SP - 137
EP - 146
%@ 1673-565X
Y1 - 2013
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1200146

Abstract
Chinese Summary
Academic Network
Reviewer Comment

Abstract: In this paper, a new pressure reducing valve (PRV) with an orifice plate is proposed. The main objective is to explain the mechanisms of pressure reduction and energy conversion in the new PRV. A numerical simulation method was used to investigate the PRV internal flow field and to analyze the throttling effects of the orifice plate and the transform of thermal parameters as outlet pressure, outlet temperature, velocity, and superheat. A structure improvement method for the valve body and orifice plate is put forward to reduce energy loss. The governing equations for internal flow numerical simulation are composed of the continuity, momentum, energy and k-ε transport equations, based on isotropic eddy viscosity theory. Different valve plug displacement models were built to describe the double throttling process. Our analysis shows that the steam pressure drops twice and the degree of superheat increases. There are also lots of eddies which clog the flow channel and disturb the steam flow in the valve cavity after the valve plug and the outlet cavity. After modifying the structure, the numerical results show a better performance of steam flow.

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References

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