机械科学与技术2017，Vol.36Issue(11)：1666-1673,8.DOI:10.13433/j.cnki.1003-8728.2017.1105
天然气井井下定压节流阀数值模拟及结构优化
Numerical Simulation and Structure Optimization of A Down-hole Throttling Valve of Constant Pressure for Gas Well
摘要
Abstract
In view of the current throttle valve can't be automatically changed according to the need to change the size of the nozzle and other issues,a new type of natural gas well down-hole constant pressure throttle valve is simulated using ANSYS,the down-hole throttle valve can control the throttle opening size automatically according to the change of inlet pressure,which makes sure that the outlet pressure of throttle valve is basically in the designed area.The pressure,velocity and temperature of the throttle valve of the throttle valve are analyzed under the normal operating pressure range and different opening size,the simulation results are consistent with the theoretical calculation ones.Through analyzing the erosion of valve core and valve seat in two phase flow gas-solid,the results show that throttle valve core cone erosion wear is the most serious,the maximum erosion rate was 4.413x10-7 kg/(m2 · s).Finally,based on the numerical simulation results,the throttle valve core and valve seat structure are optimized,the optimization results demonstrate that when the throttle valve seat angle is set toβ=10°,the valve core erosion rate is the minimal.关键词
定压节流阀/数值模拟/开度/冲蚀磨损/结构优化Key words
structure optimization/control/pressure/velocity/temperature/designed/two phase flow/optimization分类
能源科技引用本文复制引用
钟功祥,王进,蒋晓波..天然气井井下定压节流阀数值模拟及结构优化[J].机械科学与技术,2017,36(11):1666-1673,8.基金项目
省部共建“石油天然气装备”教育部重点实验室项目(2015sts03)资助 （2015sts03）
