Fluid flow measuring device

Details Fluid flow measuring device Fluid flow measuring device

1983-08-22

1985-06-18

Miles, Tim

Measuring and testing

Volume or rate of flow

Mass flow by imparting angular or transverse momentum to the...

7386183, G01F 178

Patent

active

045234795

ABSTRACT:
A mass flow meter for fluids flowing through a conduit wherein the fluid passes through an axial flow driving impeller. A balancing impeller attached to the driving impeller by a shaft rotates in a damping fluid provides a linear torque versus rotational speed relationship. By providing a resistance torque subject to cause the driving impeller to rotate very slowly, the rate of rotation of the shaft becomes proportional to mass flow rate. According to another aspect of the invention, a float submersed within the damping fluid is attached to the shaft whereby an upward acting weight counterbalancing force is exerted. A second embodiment is disclosed including two driving impellers which provides protection for the meter from transient loads exerted by the measured fluid.

REFERENCES:
patent: 972156 (1910-10-01), Brown
patent: 3308661 (1967-03-01), Stevenson
patent: 3575052 (1971-04-01), Lenker
patent: 3613451 (1971-10-01), Scott
patent: 3815415 (1974-06-01), Wemyss et al.
patent: 4291584 (1981-09-01), Anderson
Sales brochure, BIF Company, a division of General Signal, W. Warwick, R.I., "Series 400 Shuntflo Direct Reading Steam Meter", 5/75.
Sales brochure, Cadillac Meter Company, "Cadillac Split Flow Meter", first published Jun. 1981, Port Townsend, Wash., 98368.
Sales brochure, Cadillac Meter Company, "Model HB Split Flow Meter", Oct. 1982, Port Townsend, Wash., 98368.

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