Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1987-12-16
1990-03-27
Williams, Hezron E.
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
7386122, G01F 132
Patent
active
049110195
ABSTRACT:
This invention discloses a vortex sensor for detecting vortices generated by a bluff body immersed in a fluid stream, which vortex sensor comprises an elongated or planar member receiving fluid dynamic forces associated with the vortices and a transducer connected thereto, wherein at least one extremity of the elongated or planar member is secured to the wall structure of the flow passage, while the other unsecured extremity of the elongated or planar member or an extension thereof is connected to the force receiving member of a transducer. The secured extremity of the elongated or planar member contributes to a high resonance frequency thereof well above the vortex shedding frequency ranges, while the other unsecured extremity contributes to a high sensitivity in the vortex sensing as that extremity connected to the transducer transmits all of the stress and/or strain generated by the fluid dynamic forces associated with the vortices to the force receiving member of the transducer.
REFERENCES:
patent: 3116639 (1964-01-01), Bird
patent: 4048854 (1977-09-01), Herzl
patent: 4069708 (1978-01-01), Fussell, Jr.
patent: 4181020 (1980-01-01), Herzl
patent: 4727756 (1988-03-01), Lew
Bell Robert P.
Williams Hezron E.
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