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Parametric analysis on throttling components of multi-stage high pressure reducing valve

Hou, Cong wei; Qian, Jin yuan LU ; Chen, Fu qiang; Jiang, Wei kang and Jin, Zhi-jiang (2018) In Applied Thermal Engineering 128. p.1238-1248
Abstract

High pressure reducing valve (HPRV) is widely used for pressure and temperature control of heated steams in power plant and other related process engineering. The structures of throttling components inside HPRVs have important effects on the control performances. In this paper, a parametric study of throttling components in a multi-stage high pressure reducing valve (MSHPRV) is carried out, including the relative angle of inner and outer porous shrouded holes, the orifice plate thickness, the number of orifice plates and the diameter of plate holes. A numerical model is established to investigate internal flow and throttling characteristics with RNG k-ε model, and it is validated by the theoretical flux calculation. The results show... (More)

High pressure reducing valve (HPRV) is widely used for pressure and temperature control of heated steams in power plant and other related process engineering. The structures of throttling components inside HPRVs have important effects on the control performances. In this paper, a parametric study of throttling components in a multi-stage high pressure reducing valve (MSHPRV) is carried out, including the relative angle of inner and outer porous shrouded holes, the orifice plate thickness, the number of orifice plates and the diameter of plate holes. A numerical model is established to investigate internal flow and throttling characteristics with RNG k-ε model, and it is validated by the theoretical flux calculation. The results show that, the relative angle set as 180° can obtain the largest decompression pressure when steam flows through porous shrouded valve core, while the turbulence degree is the lowest. Setting one orifice plate can decrease the turbulent dissipation rate. The plate thickness has less influence on throttling effects. For ensuring the outlet flux, plate holes with smaller diameters should be chosen with a better flowing property on thermodynamic parameters. The work can be referred by the design work of throttling components in MSHPRV and it can also benefit the further research on similar HPRVs.

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Contribution to journal
publication status
published
subject
keywords
Computational fluid dynamics (CFD), Flow characteristics, Multi-stage high pressure reducing valve (MSHPRV), Structural parameters, Throttling components
in
Applied Thermal Engineering
volume
128
pages
11 pages
publisher
Elsevier
external identifiers
  • scopus:85029938380
ISSN
1359-4311
DOI
10.1016/j.applthermaleng.2017.09.081
language
English
LU publication?
yes
id
990437df-e40e-4c88-ae7a-d04078e693e6
date added to LUP
2017-10-05 10:56:13
date last changed
2018-01-07 12:20:48
@article{990437df-e40e-4c88-ae7a-d04078e693e6,
  abstract     = {<p>High pressure reducing valve (HPRV) is widely used for pressure and temperature control of heated steams in power plant and other related process engineering. The structures of throttling components inside HPRVs have important effects on the control performances. In this paper, a parametric study of throttling components in a multi-stage high pressure reducing valve (MSHPRV) is carried out, including the relative angle of inner and outer porous shrouded holes, the orifice plate thickness, the number of orifice plates and the diameter of plate holes. A numerical model is established to investigate internal flow and throttling characteristics with RNG k-ε model, and it is validated by the theoretical flux calculation. The results show that, the relative angle set as 180° can obtain the largest decompression pressure when steam flows through porous shrouded valve core, while the turbulence degree is the lowest. Setting one orifice plate can decrease the turbulent dissipation rate. The plate thickness has less influence on throttling effects. For ensuring the outlet flux, plate holes with smaller diameters should be chosen with a better flowing property on thermodynamic parameters. The work can be referred by the design work of throttling components in MSHPRV and it can also benefit the further research on similar HPRVs.</p>},
  author       = {Hou, Cong wei and Qian, Jin yuan and Chen, Fu qiang and Jiang, Wei kang and Jin, Zhi-jiang},
  issn         = {1359-4311},
  keyword      = {Computational fluid dynamics (CFD),Flow characteristics,Multi-stage high pressure reducing valve (MSHPRV),Structural parameters,Throttling components},
  language     = {eng},
  month        = {01},
  pages        = {1238--1248},
  publisher    = {Elsevier},
  series       = {Applied Thermal Engineering},
  title        = {Parametric analysis on throttling components of multi-stage high pressure reducing valve},
  url          = {http://dx.doi.org/10.1016/j.applthermaleng.2017.09.081},
  volume       = {128},
  year         = {2018},
}