套筒阀消能与气蚀研究及结构改进  

Research on energy dissipation and cavitation of sleeve valves and structural improvement

作　　者：张希恒[1] 吴佳丽 薛睿渊 卫钧焕 赵昕宇 ZHANG Xiheng;WU Jiali;XUE Ruiyuan;WEI Junhuan;ZHAO Xinyu(College of Petrochemical Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050

出　　处：《甘肃科学学报》2024年第5期89-95,共7页Journal of Gansu Sciences

基　　金：甘肃省青年科技基金计划(22JR5RA297)。

摘　　要：对套筒阀的消能率进行研究,建立三维模型并利用Fluent仿真软件对其进行内部流场的数值模拟,分析了传统套筒阀不同开度下的流场分布及消能效果。通过结构改进,提出一种新型的旋流式套筒阀,研究旋流式套筒阀套筒窗口切向角的变化对阀消能效果的影响,对比分析了传统套筒阀和旋流式套筒阀在各开度下的消能效果及气蚀特性。结果表明:传统套筒阀消能效果低于旋流式套筒阀,且在管壁及套筒处易发生气蚀现象;增大旋流式套筒的切向角能够提高其消能效果,且管壁及套筒处不易发生气蚀现象。综合消能率及气蚀分析,槽口切向角为30°时旋流式套筒阀消能降压效果较好,阀内含气率较低,能够防止气蚀对阀内零件及管道壁面的破坏。The purpose of this paper is to conduct research on the energy dissipation rate of sleeve valves,and establish a three-dimensional model to numerically simulate the internal flow field using.Fluent simulation software.It analyzed the flow field distribution and energy dissipation effect of traditional sleeve valves under different opening angles.Through structural improvement,a new type of swirling sleeve valve was proposed to study the impact of changes in the tangential angle of the sleeve window of the swirling sleeve valve on the energy dissipation effect of the valve.A comparative analysis was conducted on the energy dissipation effect and cavitation characteristics of traditional sleeve valves and swirling sleeve valves at various openings.The results show that the energy dissipation effect of traditional sleeve valves is lower than that of rotary sleeve valves,and cavitation phenomenon is prone to occur at the pipe wall and sleeve.Increasing the tangential angle of the swirl sleeve can improve its energy dissipation effect,and cavitation is less likely to occur at the pipe wall and sleeve.Based on comprehensive energy dissipation rate and cavitation analysis,when the tangential angle of the groove is 30°,the swirling sleeve valve has a good energy dissipation and pressure reduction effect,and the valve has a low air content,which can prevent cavitation from damaging the parts inside the valve and the pipeline wall.

关 键 词：旋流式套筒阀 切向角 数值模拟 消能率 气蚀 

分 类 号：TH134[机械工程—机械制造及自动化]