Advanced

Mach number analysis on multi-stage perforated plates in high pressure reducing valve

Qian, Jin Yuan LU ; Zhang, Ming; Lei, Li Nan; Chen, Fu Qiang; Chen, Li Long; Wei, Lin and Jin, Zhi Jiang (2016) In Energy Conversion and Management 119. p.81-90
Abstract

High pressure reducing valve (HPRV) is a key device for the pressure control of high temperature and pressure steam in industrial processes. Perforated plate is used as the throttling element to ensure the suitable pressure of steam and reduce aerodynamic noise inside HPRV and the linked pipelines. Mach number is the parameter to reflect the compressibility of steam flow. Higher Mach number may cause serious aerodynamic noise of steams flow, waste large amount of energy and do harm to the valves and pipelines. In this paper, Mach number on multi-stage perforated plates inside a novel HPRV and the linked pipelines is investigated. Mach number in reversible isentropic process is analyzed and the design method of multi-stage perforated... (More)

High pressure reducing valve (HPRV) is a key device for the pressure control of high temperature and pressure steam in industrial processes. Perforated plate is used as the throttling element to ensure the suitable pressure of steam and reduce aerodynamic noise inside HPRV and the linked pipelines. Mach number is the parameter to reflect the compressibility of steam flow. Higher Mach number may cause serious aerodynamic noise of steams flow, waste large amount of energy and do harm to the valves and pipelines. In this paper, Mach number on multi-stage perforated plates inside a novel HPRV and the linked pipelines is investigated. Mach number in reversible isentropic process is analyzed and the design method of multi-stage perforated plates in HPRV is proposed. Then, the RNG k-ϵ model combining with compressible gas is established, and the Mach number simulation of single perforated plate and multi-stage perforated plates is carried out in software Fluent 6.3. Meanwhile, Mach number inside HPRV is also presented, and the pressure ratio of perforated plate is also investigated. It can be found that under higher pressure ratio, the influence area of the last perforated plate becomes larger, and the energy loss in perforated plate is larger than the valve core. Furthermore, there exists a limited pressure ratio of every stage perforated plate, and it is better to keep the pressure ratio of every stage perforated plate larger than 0.5. This work presents the function of perforated plates in HPRV for throttling and reducing aerodynamic noises, and it can benefit the researchers who are dealing with multi-stage perforated plates design for valves and pipelines.

(Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Compressible steam, Computational Fluid Dynamics (CFD), High pressure reducing valve (HPRV), Mach number (Ma), Perforated plate, Pressure ratio
in
Energy Conversion and Management
volume
119
pages
10 pages
publisher
Elsevier
external identifiers
  • scopus:84963805225
ISSN
0196-8904
DOI
10.1016/j.enconman.2016.04.029
language
English
LU publication?
no
id
5edfa12d-4858-4c3a-ba6e-e1ec29584994
date added to LUP
2016-11-11 17:07:13
date last changed
2017-07-23 05:20:14
@article{5edfa12d-4858-4c3a-ba6e-e1ec29584994,
  abstract     = {<p>High pressure reducing valve (HPRV) is a key device for the pressure control of high temperature and pressure steam in industrial processes. Perforated plate is used as the throttling element to ensure the suitable pressure of steam and reduce aerodynamic noise inside HPRV and the linked pipelines. Mach number is the parameter to reflect the compressibility of steam flow. Higher Mach number may cause serious aerodynamic noise of steams flow, waste large amount of energy and do harm to the valves and pipelines. In this paper, Mach number on multi-stage perforated plates inside a novel HPRV and the linked pipelines is investigated. Mach number in reversible isentropic process is analyzed and the design method of multi-stage perforated plates in HPRV is proposed. Then, the RNG k-ϵ model combining with compressible gas is established, and the Mach number simulation of single perforated plate and multi-stage perforated plates is carried out in software Fluent 6.3. Meanwhile, Mach number inside HPRV is also presented, and the pressure ratio of perforated plate is also investigated. It can be found that under higher pressure ratio, the influence area of the last perforated plate becomes larger, and the energy loss in perforated plate is larger than the valve core. Furthermore, there exists a limited pressure ratio of every stage perforated plate, and it is better to keep the pressure ratio of every stage perforated plate larger than 0.5. This work presents the function of perforated plates in HPRV for throttling and reducing aerodynamic noises, and it can benefit the researchers who are dealing with multi-stage perforated plates design for valves and pipelines.</p>},
  author       = {Qian, Jin Yuan and Zhang, Ming and Lei, Li Nan and Chen, Fu Qiang and Chen, Li Long and Wei, Lin and Jin, Zhi Jiang},
  issn         = {0196-8904},
  keyword      = {Compressible steam,Computational Fluid Dynamics (CFD),High pressure reducing valve (HPRV),Mach number (Ma),Perforated plate,Pressure ratio},
  language     = {eng},
  month        = {07},
  pages        = {81--90},
  publisher    = {Elsevier},
  series       = {Energy Conversion and Management},
  title        = {Mach number analysis on multi-stage perforated plates in high pressure reducing valve},
  url          = {http://dx.doi.org/10.1016/j.enconman.2016.04.029},
  volume       = {119},
  year         = {2016},
}