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Effects of operating parameters on flow force characteristics in a conical throttle valve

Beibei Li (School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, China and Center of Urban Emergency Technology and Equipment, China University of Mining and Technology, Xuzhou, China)
Ruirui Li (School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, China)
Xiumei Liu (School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, China and Center of Urban Emergency Technology and Equipment, China University of Mining and Technology, Xuzhou, China)
Qiao Zhao (College Student Innovation Training Center, China University of Mining and Technology, Xuzhou, China)
Jichao Ma (School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, China)
Jie He (School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 25 January 2022

Issue publication date: 2 March 2022

124

Abstract

Purpose

Flow force is one of the crucial factors affecting the performance of conical throttle valves. The purpose of this paper is to determine the relationship between the flow force and operating parameters of the conical throttle valve.

Design/methodology/approach

The flow force of the throttle valve can be obtained by the difference between the axial force and static pressure on the valve spool. In this paper, the internal fluid is divided into two regions and the axial force and static pressure are obtained, respectively. In addition, a two-dimensional axisymmetric simulation model and experimental test are carried out to validate the results of the flow force.

Findings

It can be seen that the theoretical, simulation and experimental results exhibit high agreement with each other and the error between them decreases with the increase in the size of the opening. The curves of pressure distribution reveal that the pressure on the spool first decreases then increases when it reaches the minimum pressure at the orifice. Additionally, the minimum pressure decreases with the increase of opening and pressure difference. The results also indicate that the increase in the size of the opening and inlet pressure has a positive effect on the flow force. However, the increase in outlet pressure has a negative effect on the flow force.

Originality/value

In this paper, the flow force calculation model of conical throttle valve is established and the influence of operating parameters on the flow force of conical throttle valve is studied.

Keywords

Acknowledgements

This research was funded by the National Natural Science Foundation of China (Grant No. 51875559), the Fundamental Research Funds for the Central Universities (Grant No. 2015XKMS024), and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

Citation

Li, B., Li, R., Liu, X., Zhao, Q., Ma, J. and He, J. (2022), "Effects of operating parameters on flow force characteristics in a conical throttle valve", Industrial Lubrication and Tribology, Vol. 74 No. 2, pp. 251-257. https://doi.org/10.1108/ILT-12-2020-0452

Publisher

:

Emerald Publishing Limited

Copyright © 2022, Emerald Publishing Limited

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