1.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.

1.对涡流量计中涡的结构了如下改:涡的叶片与主轴的夹角由原来的60°减小到45,°叶片由六片增加到七片。