Vortex flowmeter bluff body

Details Vortex flowmeter bluff body Vortex flowmeter bluff body

G - Physics

01

F

73/125

G01F 1/32 (2006.01)

Patent

CA 1190414

VORTEX FLOWMETER BLUFF BODY ABSTRACT OF THE DISCLOSURE A vortex flowmeter utilizes a bluff body or bar which creates vortices that are sufficiently stable and of sufficient strength to provide for pressure signals that are easily sensed, and at the same time achieves satisfactory linearity between the frequency of the vortices and the rate of flow past the sensor. The flowmeter is designed so that the same sensor arrangement for sensing the frequency of vortex generation can be used for flowmeters designed for a wide range of pipe or line sizes. By utilizing the cross section geometry of the bluff body or bar disclosed herein, the section of the body that is used for mounting the sensor is the same width, which is the critical dimension for sensor mounting, for line sizes from two inches (5.08 cm) to eight inches (20.32 cm) inclusive and line sizes from one inch (2.54 cm) to one and one-half inches (3.81 cm) inclusive. The ability to have a standard sensor for a number of different meter sizes reduces inventories and manufacturing costs, and also makes service of sensors easier. The flowmeter of the present invention not only permits the interchangeability of sensors across a wide range of pipe sizes, but also has good linearity, is easy to manufacture, and continues to operate reliably after extensive usage.

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