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Effects of orifice on pressure difference in pilot-control globe valve by experimental and numerical methods

Qian, Jin-Yuan LU ; Liu, Bu-zhan; Lei, Li-nan; Zhang, Han; Lu, An-le; Wang, Jian-Kai and Jin, Zhi-jiang (2016) In International Journal of Hydrogen Energy 41(41). p.18562-18570
Abstract
Pilot-Control Globe Valve (PCGV) can utilize pressure difference caused by fluid flow through the orifice on valve core as its power, for open and close the main valve with a small pilot valve. It has obvious advantages of energy conservation and quick response. Orifice structure on the valve core is the main component to determine the pressure difference, which is used to push the valve core. In this paper, the numerical model with User Defined Functions (UDFs) method is carried out, and the experimental device is arranged. The numerical and experimental results of valve core displacements achieve agreements. Then, analysis of pressure difference under different static pressures, inlet velocities and different orifice diameters are... (More)
Pilot-Control Globe Valve (PCGV) can utilize pressure difference caused by fluid flow through the orifice on valve core as its power, for open and close the main valve with a small pilot valve. It has obvious advantages of energy conservation and quick response. Orifice structure on the valve core is the main component to determine the pressure difference, which is used to push the valve core. In this paper, the numerical model with User Defined Functions (UDFs) method is carried out, and the experimental device is arranged. The numerical and experimental results of valve core displacements achieve agreements. Then, analysis of pressure difference under different static pressures, inlet velocities and different orifice diameters are carried out. It shows that pressure difference has no relationship with static pressure, thus PCGV can be adopted in hydrogen pipelines. Meanwhile, higher inlet velocity can turn out larger pressure difference with quicker response of PCGV. In addition, there exits an unbalanced moment, and 15 mm is the extreme diameter of the orifice for DN150 PCGV. Finally, the design method of the orifice structure in PCGV is proposed with design formulas. This work can help the precise design work of PCGV, and it can be referred by other researchers who are also deal with orifice structures in similar valves design work. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Computational fluid dynamics (CFD), Experimental verification, Pilot-control globe valve, Orifice diameter, Pressure difference, Hydrogen pipelines
in
International Journal of Hydrogen Energy
volume
41
issue
41
pages
9 pages
publisher
Elsevier
external identifiers
  • scopus:84993960930
  • wos:000385598300026
ISSN
1879-3487
DOI
10.1016/j.ijhydene.2016.08.070
language
English
LU publication?
yes
id
2b04462e-4f63-4587-b9c0-949b1e80d707
date added to LUP
2016-11-11 17:01:01
date last changed
2017-08-13 05:00:19
@article{2b04462e-4f63-4587-b9c0-949b1e80d707,
  abstract     = {Pilot-Control Globe Valve (PCGV) can utilize pressure difference caused by fluid flow through the orifice on valve core as its power, for open and close the main valve with a small pilot valve. It has obvious advantages of energy conservation and quick response. Orifice structure on the valve core is the main component to determine the pressure difference, which is used to push the valve core. In this paper, the numerical model with User Defined Functions (UDFs) method is carried out, and the experimental device is arranged. The numerical and experimental results of valve core displacements achieve agreements. Then, analysis of pressure difference under different static pressures, inlet velocities and different orifice diameters are carried out. It shows that pressure difference has no relationship with static pressure, thus PCGV can be adopted in hydrogen pipelines. Meanwhile, higher inlet velocity can turn out larger pressure difference with quicker response of PCGV. In addition, there exits an unbalanced moment, and 15 mm is the extreme diameter of the orifice for DN150 PCGV. Finally, the design method of the orifice structure in PCGV is proposed with design formulas. This work can help the precise design work of PCGV, and it can be referred by other researchers who are also deal with orifice structures in similar valves design work.},
  author       = {Qian, Jin-Yuan and Liu, Bu-zhan and Lei, Li-nan and Zhang, Han and Lu, An-le and Wang, Jian-Kai  and Jin, Zhi-jiang},
  issn         = {1879-3487},
  keyword      = {Computational fluid dynamics (CFD),Experimental verification,Pilot-control globe valve,Orifice diameter,Pressure difference,Hydrogen pipelines},
  language     = {eng},
  month        = {11},
  number       = {41},
  pages        = {18562--18570},
  publisher    = {Elsevier},
  series       = {International Journal of Hydrogen Energy},
  title        = {Effects of orifice on pressure difference in pilot-control globe valve by experimental and numerical methods},
  url          = {http://dx.doi.org/10.1016/j.ijhydene.2016.08.070},
  volume       = {41},
  year         = {2016},
}