Measuring and testing – Volume or rate of flow – By measuring thrust or drag forces
Patent
1979-10-22
1981-09-29
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
By measuring thrust or drag forces
G01F 128
Patent
active
042915848
ABSTRACT:
A turbine flow meter is disclosed of the type including a turbine rotor disposed in a fluid flow passage, the turbine receiving the fluid flow to be measured and mounted so as to restrain rotary movement in reaction to the change of momentum imposed on the fluid by the turbine rotor blades. A reactive force sensing arrangement measures the force acting on the turbine rotor blades and generates signals, related to the rate of fluid flow. These signals are combined with downstream pressure and temperature signals to provide a mass rate of flow output signal. The turbine rotor is disposed downstream from a shielding stator positioned such that upon increasing fluid flow and resultant advancing rotary position of the turbine rotor, a lesser proportion of the total fluid flow in the passage is intercepted by the turbine rotor. The net result is a linearizing of the relationship between the fluid flow and the reactive force acting on the turbine rotor. A coil spring acts to resist the rotary movement of the turbine rotor while silicone sleeve bearings are employed to damp the rotary motion of the turbine rotor.
REFERENCES:
patent: 2422762 (1947-06-01), Williams
patent: 2483190 (1949-09-01), Evans
patent: 2714310 (1955-08-01), Jennings
patent: 3241367 (1966-03-01), Moss
patent: 3290937 (1966-12-01), Matthews
patent: 3308662 (1967-03-01), Maurer
patent: 3407657 (1968-10-01), Maurer
patent: 3807229 (1974-04-01), Chiles
patent: 3943891 (1976-03-01), Kinugawa
Goldstein Herbert
The Bendix Corporation
Wells Russel C.
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