Welcome to visit The Chinese Journal of Process Engineering, Today is

The Chinese Journal of Process Engineering ›› 2025, Vol. 25 ›› Issue (3): 241-248.DOI: 10.12034/j.issn.1009-606X.224257

• Research Paper • Previous Articles     Next Articles

Effect of solid phase volume fraction on cavitation characteristics of O-type ball valve

Zhaonian ZHOU1,  Binbin WU2,  Tingfeng HUA1,  Zhaotong WANG1,  Zhijiang JIN1,3,  #br# Wenqing LI4*,  Jinyuan QIAN1   

  1. 1. Institute of Process Equipment, College of Energy Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China 2. Shanghai Koko Valves Co., Ltd., Shanghai 201802, China 3. Institute of Wenzhou, Zhejiang University, Wenzhou, Zhejiang 325036, China 4. State Key Laboratory of Fluid Power & Mechatronic Systems, Zhejiang University, Hangzhou, Zhejiang 310027, China
  • Received:2024-08-16 Revised:2024-09-26 Online:2025-03-28 Published:2025-03-28

固相体积分数对O型球阀空化特性的影响

周兆年1， 吴斌彬2， 华霆锋1， 王照彤1， 金志江1,3， 李文庆4*， 钱锦远1   

  1. 1. 浙江大学能源工程学院化工机械研究所，浙江 杭州 310027 2. 上海科科阀门集团有限公司，上海 201802 3. 浙江大学温州研究院，浙江 温州 325036 4. 浙江大学流体动力基础件与机电系统全国重点实验室，浙江 杭州 310027
  • 通讯作者: 钱锦远 qianjy@zju.edu.cn
  • 基金资助:
    国家自然科学基金面上项目;国家资助博士后研究人员计划

RichHTML

PDF

Abstract: The O-type ball valve serves as an important fluid control equipment in the coal chemical industry. However, during the operation process, cavitation phenomenon is very easy to occur inside the ball valve which will greatly affect production safety. The working medium of the ball valve is a fluid containing solid particles, and the volume fraction of particles will affect the cavitation, but the mechanism of how the fraction of particles affect cavitation is not clear. In order to solve this problem, numerical simulation is used to investigate the effect of solid phase volume fraction on cavitation in ball valve under different ball angles. The degree of cavitation in the ball valve can be illuminated by the pressure, cavitation number, and gas phase volume fraction on the valve ball outlet section. The results show that when the ball angle is 30° and 45°, there is no cavitation in the valve under any solid phase volume fraction. However, when the ball angle is 60°, different solid phase volume fractions have different effects on cavitation. When the solid phase volume fraction increases from 0% to 10%, the cavitation degree in the ball valve is gradually weakened. When the solid phase volume fraction increased from 10% to 20%, cavitation in the valve gradually increased. In addition, it is interesting that when the valve ball angle reaches 75°, cavitation in the ball valve will be promoted by any solid phase volume fraction. A lot of work has been done in this work to reveal the influence mechanism of solid phase volume fraction and ball valve angles on cavitation characteristics of O-type ball valves, and some useful results have been obtained, which has a certain guiding on controlling the working environment and multi-phase flow simulation of O-type ball valves.

Key words: O-type ball valve, cavitation, solid-phase volume, Mixture model, cavitation number, multiphase flow

摘要： O型球阀是煤化工行业中重要的流体控制设备，在工作过程中，球阀内部容易发生空化现象。球阀工质为含有固相颗粒的流体，颗粒的体积分数会对空化产生影响但机制尚不明确。针对这一问题，使用数值模拟的手段，探究了不同阀球转角下，固相体积分数对球阀内空化的影响。结果表明，当阀球转角为30°以及45°时，阀内并无空化发生；阀球转角为60°时，低浓度的颗粒会削弱阀内的空化程度，而浓度大于10%的颗粒会促进空化发生；阀球转角为75°时，不同浓度的颗粒均会促进阀内的空化。本工作揭示了固相体积分数对O型球阀空化特性的影响机理，对于控制O型球阀工作环境以及多相流仿真方面具有一定的指导作用。

关键词: O型球阀, 空化, 固相体积, Mixture模型, 空化数, 多相流