Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1996-07-31
1998-04-07
Dougherty, Elizabeth L.
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
G01F 132
Patent
active
057366470
ABSTRACT:
A vortex flowmeter detector is attached to or detachable from a vortex generation body for measurement of flow rate. The vortex flowmeter detector comprises a cylindrical oscillation tube having a bottom and a vortex detection part which is fixed by a fixing flange of the oscillation tube, wherein the oscillation tube is detachably inserted into a hole which is open to the vortex generation body at one end thereof, and the oscillation tube is fixed by a flange. An alternate pressure caused by a Karman vortex is introduced from both sides of the vortex generation body into the hole so as to oscillate the oscillation tube. This oscillation is received by a spring plate by way of an element cover, and it is transmitted to piezoelectric elements which are stuck to two chamfers of an elastic base material.
REFERENCES:
patent: 4625564 (1986-12-01), Murakami et al.
patent: 4627295 (1986-12-01), Matsubara et al.
patent: 4706503 (1987-11-01), Kamentser
patent: 4854177 (1989-08-01), Phipps et al.
Imai Shinsuke
Matsubara Naoki
Takai Ken-ichi
Tanimoto Jun
Artis Jewel
Dougherty Elizabeth L.
Oval Corporation
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