Advanced

Transient simulation of valve core movement of pilot-control globe valve in vertical pipelines

Qian, Jinyuan LU ; Zhu, Yinfa; Liu, Buzhan; Lu, Anle and Jin, Zhijiang (2016) In Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering 34(1). p.51-65
Abstract

A novel pilot-control globe valve, which can be used in vertical pipelines with a lower driving energy consumption, is proposed. A governing equation for valve core motion is obtained through a theoretical analysis of the forces applied on the valve core. A 3D simulation of valve core motion is conducted in Fluent by using User Defined Function (UDF) to involve different spring stiffness, steady state displacements, impact speeds and transient state displacements. The results show that there are different opening modes for different spring stiffness. For smaller spring stiffness, the valve is subject to a quicker response to flow to ensure it can work properly; however, this can more easily result in a higher impact speed. With the... (More)

A novel pilot-control globe valve, which can be used in vertical pipelines with a lower driving energy consumption, is proposed. A governing equation for valve core motion is obtained through a theoretical analysis of the forces applied on the valve core. A 3D simulation of valve core motion is conducted in Fluent by using User Defined Function (UDF) to involve different spring stiffness, steady state displacements, impact speeds and transient state displacements. The results show that there are different opening modes for different spring stiffness. For smaller spring stiffness, the valve is subject to a quicker response to flow to ensure it can work properly; however, this can more easily result in a higher impact speed. With the increasing of spring stiffness, the steady displacement of the core reduces especially beyond a turning point. Besides, the numerical transient displacements with 0.9 and 1.1 times the spring stiffness show good agreement with those obtained from a theoretical analysis. It is found out that the real spring design point should have 0.9 times the spring stiffness determined by the theoretical analysis. This paper provides a reference for designing and application of pilot-control globe valves or other valves with similar structures.

(Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Pilot-control globe valve, Spring stiffness, Transient simulation, Valve core movement, Vertical pipeline
in
Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering
volume
34
issue
1
pages
6 pages
publisher
Editorial Department of Drainage and Irrigation Machinery Engineering
external identifiers
  • scopus:84961839185
ISSN
1674-8530
DOI
10.3969/j.issn.1674-8530.15.0206
language
English
LU publication?
no
id
4cb17e09-de08-476f-a209-96888838bc47
date added to LUP
2016-11-11 17:10:23
date last changed
2017-01-01 08:39:28
@article{4cb17e09-de08-476f-a209-96888838bc47,
  abstract     = {<p>A novel pilot-control globe valve, which can be used in vertical pipelines with a lower driving energy consumption, is proposed. A governing equation for valve core motion is obtained through a theoretical analysis of the forces applied on the valve core. A 3D simulation of valve core motion is conducted in Fluent by using User Defined Function (UDF) to involve different spring stiffness, steady state displacements, impact speeds and transient state displacements. The results show that there are different opening modes for different spring stiffness. For smaller spring stiffness, the valve is subject to a quicker response to flow to ensure it can work properly; however, this can more easily result in a higher impact speed. With the increasing of spring stiffness, the steady displacement of the core reduces especially beyond a turning point. Besides, the numerical transient displacements with 0.9 and 1.1 times the spring stiffness show good agreement with those obtained from a theoretical analysis. It is found out that the real spring design point should have 0.9 times the spring stiffness determined by the theoretical analysis. This paper provides a reference for designing and application of pilot-control globe valves or other valves with similar structures.</p>},
  author       = {Qian, Jinyuan and Zhu, Yinfa and Liu, Buzhan and Lu, Anle and Jin, Zhijiang},
  issn         = {1674-8530},
  keyword      = {Pilot-control globe valve,Spring stiffness,Transient simulation,Valve core movement,Vertical pipeline},
  language     = {eng},
  month        = {01},
  number       = {1},
  pages        = {51--65},
  publisher    = {Editorial Department of Drainage and Irrigation Machinery Engineering},
  series       = {Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering},
  title        = {Transient simulation of valve core movement of pilot-control globe valve in vertical pipelines},
  url          = {http://dx.doi.org/10.3969/j.issn.1674-8530.15.0206},
  volume       = {34},
  year         = {2016},
}