旋流型管壁取样分配器整流特性分析

为克服管壁取样测量气液两相流体流量方法中环状流不均匀稳定的缺点,在旋流叶片下游采用整流元件将旋流形成的环状流整改成液膜厚度均匀稳定的环状流型,增强取样的代表性,并在整流器下游增设了两个取样位置,以确定装置最佳取样位置。分析表明,在取样位置1处形成的环状流比较均匀稳定;随着流量的增大,均匀环状流稳定流动的时间延长。本实验装置存在最小正常工作范围:气相折算速度为30.50 m/s,液相折算速度为0.08 m/s。当流量超过这一特定值时,流型整改效果良好。

Rectifying Properties Analysis on Swirled Sampler along the Circumference

In order to overcome annular flow uneven unstable defection in the pipe wall sampling measurement of gas-liquid two-phase fluid flow method,in the downstream of swirl vanes rectifier element was used to making the annular flow into liquid film thickness uniform and stable,enhanced the representation of sampling,and in downstream of rectifier element two additional sampling locations was used to determine the optimum sampling position.Analysis showed that,in the sampling position 1 the annular flow was uniform and stable,as the flow increased,uniform annular flow steady flow in a longer time.The experimental device has a minimal normal operating range： gas equivalant velocity was 30.50 m/s,the liquid equivalant l velocity was 0.08 m/s.When the flow exceeded the specified value,the flow corrective effect was good.