流体机械2017，Vol.45Issue(2)：32-37,6.DOI:10.3969/j.issn.1005-0329.2017.02.007
气动疏水阀冲蚀工况数值模拟及结构优化
Numerical Simulation on Erosion of Pneumatic Drain Valve and optimization on structure
徐亮亮 1王正东 1于新海 1曾聪1
作者信息
- 1. 华东理工大学 承压系统与安全教育部重点实验室,上海 200237
- 折叠
摘要
Abstract
In this paper,numerical simulations on Y type pneumatic drain valve were carried out using Eulerian-Lagrangian model.The simulation results were verified by the experimental ones.It was found that the droplet velocity close to the sealing surface exceeds the threshold values,resulting in serious erosion.To lower down the extent of erosion,a method that a collision of droplets causes a decrease in droplet velocity was proposed.In this way,a throttling unit was assembled inside the Y type pneumatic drain valve and its performance was simulated.The results showed that the maximum droplet velocity decreases by 52% and therefore the erosion is alleviated significantly.However,the flowrate declines up to 56.5% of the valve without the throttling unit.To increase the flowrate,a throttling unit with several plates featuring maze-like channel on the plates was proposed as the vale disk.The simulation results showed that the maximum droplet velocity is 78.6 m/s,46% of the value for the valve without the throttling unit.The flowrate can achieve 78.2% of the value for the valve without the throttling unit.It can be concluded that the Y type pneumatic drain valve with a disk that features maze-like channel on the plates is applicable to serious erosion operating conditions.关键词
疏水阀/CFD/冲蚀/数值模拟Key words
drain valve/CFD/erosion/numerical simulation分类
机械制造引用本文复制引用
徐亮亮,王正东,于新海,曾聪..气动疏水阀冲蚀工况数值模拟及结构优化[J].流体机械,2017,45(2):32-37,6.
