The structure of swirler in swirlmeter is changed.The corner dimension between inlet blades and basic shaft is changed into 45 from 60 and inlet blades into seven from six.

对旋进旋涡中旋涡发生结构进了如下改进:将旋涡发生片与主轴夹角由原来60°减小到45,°将片由六片增加到七片。