公开(公告)号：US4350047A

公开(公告)日：1982-09-21

申请号：US188188

申请日：1980-09-18

申请人： Clarence F. Dewey, Jr. ,  David E. Wiklund

发明人： Clarence F. Dewey, Jr. ,  David E. Wiklund

IPC分类号： G01F1/32 ,  G01P5/01

CPC分类号： G01F1/3218

摘要： A vortex-shedding flowmeter comprising two stationary vortex-shedding cross-members (i.e., bluff bodies) disposed transversely to a stream of fluid. Each cross-member has a bluff face with sharp Karman vortex generating edges with independently selected edge to edge widths d of from 10 to 40% of the inside width of the conduit through which the fluid flows and lengths 1 of from 0.3 to 2.0d. The second cross-member is disposed downstream of the first cross-member a distance of from 4 to 15 times the width d of the first cross-member. Any sensor may be used in any location provided it or they sense the Karman vortices generated by co-action of the two cross-members. This flowmeter provides strong signals with a high signal to noise ratio and high Strouhal number.

摘要翻译： 涡流脱流流量计包括横向于流体流设置的两个固定的涡流脱落横向构件（即非流线形体）。 每个横向构件具有防撬面，其具有尖锐的卡门漩涡产生边缘，其独立选择的边缘宽度d为流体流过的导管内部宽度的10至40％，长度1为0.3至2.0d。 第二横向构件设置在第一横向构件的下游的距离为第一横向构件的宽度d的4至15倍。 任何传感器可以在任何位置使用，只要它们感觉到通过两个横梁的协同作用产生的卡门涡流。 该流量计提供具有高信噪比和高Strouhal数的强信号。