不同开度下多层套筒调节阀流道流动特性分析

Analysis of Flow Characteristics of Multi-layer Sleeve Control Valve at Different Openings

通过数值模拟方法对工业系统中的多层套筒调节阀进行了全面地研究和分析。通过仿真分析评估了该阀门的降压特性、速度特性、湍动能变化规律和空化特性。结果显示,该阀门具备出色的降压和流量控制能力。然而,在高开度时存在流量超过设计范围的潜在风险。此外,观察到阀门不同位置的湍动能变化规律存在差异,特别是第三级套筒位置的湍动能波动较大,这可能导致高剪切力的流体对壁面造成损伤。同时,空化特性分析表明,开度变化对阀门不同位置的空化程度产生不同影响。此外,当气相含量较高时,对阀门壁面的损伤更为严重。综上所述,本文研究结果为该阀门的设计和优化提供了重要参考。

In this paper,a comprehensive study and analysis of the multi-layer sleeve control valve in industrial systems were conducted using numerical simulation methods.The pressure-reducing characteristics,velocity characteristics,turbulence energy variations,and cavitation characteristics of the valve were evaluated through simulation analysis.The results demonstrate that the valve possesses excellent pressure-reducing and flow control capabilities.However,there is a potential risk of exceeding the design range of flow at high openings.Furthermore,variations in turbulence energy were observed at different positions of the valve,particularly significant fluctuations were observed at the third-stage sleeve position.This may cause damage to the wall surface due to high shear forces of the fluid.Additionally,the cavitation characteristic analysis indicates that changes in the opening degree have different effects on the cavitation level at different positions of the valve.Moreover,when the gas phase content is high,the damage to the valve wall surface becomes more severe.In conclusion,our research provides important references for the design and optimization of this valve.