Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1987-01-28
1988-04-05
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
G01F 132
Patent
active
047350946
ABSTRACT:
A dual bluff body vortex flowmeter includes a flow passage having first and second ends and a vortex-responsive sensor disposed in the passageway between its ends. A parallel pair of circularly cylindrical bluff bodies are disposed one each between the sensor and the two ends of the passage. The downstream portion of each bluff body faces towards the sensor, so that the sensor is responsive to vortices shed from either the first or second bluff body, when fluid flows in the passage from the first to second end, or from the second to the first, respectively. The sensor is preferably a piezoelectric device mounted in a cantilever beam disposed between the first and second bluff bodies and connected to the interior wall of the flow passage. The use of circularly cylindrical bluff bodies allows flows to be measured which have rates significantly lower than those measurable with conventional bluff body flowmeters, since the circularly cylindrical bluff bodies can be manufactured with smaller but more uniform dimensions than conventional bluff bodies.
REFERENCES:
patent: 2813424 (1957-11-01), Liepmann et al.
patent: 3564915 (1971-02-01), Tomota et al.
patent: 3572117 (1971-03-01), Rodely
patent: 3587312 (1971-06-01), McMurtrie et al.
patent: 3638037 (1972-01-01), McMurtrie
patent: 3722275 (1973-03-01), Rodely et al.
patent: 3732731 (1973-05-01), Fussell, Jr.
patent: 3796095 (1974-03-01), Fussell, Jr.
patent: 3823610 (1974-07-01), Fussell, Jr.
patent: 3903742 (1975-09-01), Colton
patent: 3948098 (1976-04-01), Richardson et al.
patent: 3956928 (1976-05-01), Barrera
patent: 3972232 (1976-08-01), Miller et al.
patent: 4047432 (1977-09-01), Fussell, Jr.
patent: 4069708 (1978-01-01), Fussell, Jr.
patent: 4085614 (1978-04-01), Curran et al.
patent: 4088020 (1978-05-01), Sgourakes et al.
patent: 4161878 (1976-09-01), Fussell, Jr.
patent: 4258565 (1981-03-01), Sawayama et al.
patent: 4380935 (1983-04-01), Sgourakes et al.
patent: 4457181 (1984-07-01), Marsh
patent: 4520678 (1985-06-01), Koziol et al.
patent: 4523477 (1985-06-01), Miller
patent: 4627294 (1986-09-01), Lew
patent: 4627295 (1986-09-01), Matsubara
P. W. Bearman, "On Vortex Street Wakes", 28 J. Fluid Mec. (Part 4) 625-641 (1967).
G. Eiffel, The Resistance of the Air and Aviation, (Houghton Mifflin Co., 1913), pp. 2-21, 54-62, 120.
A. Roshko, "On the Drag and Shedding Frequency of Two-Dimensional Bluff Bodies", National Advance Committee for Aeronautics Tech. Note 3169 (Jul., 1954).
Goldstein Herbert
Universal Vortex, Inc.
LandOfFree
Dual bluff body vortex flowmeter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dual bluff body vortex flowmeter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual bluff body vortex flowmeter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2227204