Torsional vibration convective inertia force flowmeter

Details Torsional vibration convective inertia force flowmeter Torsional vibration convective inertia force flowmeter

Filed on

1987-08-24

Date issued

1989-11-14

Examiner

Tokar, Michael J.

Patent Class

Measuring and testing

SubClass

Volume or rate of flow

SubSubClass

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

Other Related Categories

7386138, G01F 178, G01F 184

Type

Patent

Status

active

Patent number

048799106

Description

ABSTRACT:
This invention discloses flowmeters comprising a plurality of flow passage conduits disposed in a generally axisymmetric arrangement about an axis intermediate the inlet and outlet ports of the flowmeter, which flow passage conduits are subjected to torsional vibrations about the axis of axisymmetry, wherein the time rate of flow of materials moving through the plurality of flow passage conduits is determined from the attenuation of the torsional vibrations caused by the convective momentum transfer of the moving materials that carries away the momentum associated with the torsional vibrations or from the difference in the torsional vibratory motions between the upstream and downstream halves of the combination of the flow passage conduits, which difference in the torsional vibratory motions arises from the convective inertia forces of the materials moving through the flow passage conduits acting in two opposing directions in the two halves of the combination of the flow passage conduits.

REFERENCES:
Danfoss Massflo.RTM. Massflowmeter series Mass 1000/1100 catalog, 5/1/86.

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