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US 4,730,500 AGranted
Vortex generating mass flowmeter
AssigneeVortran Corporation
InventorNathaniel Hughes
Life of this patent
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Abstract
One or more rods are employed in the flow passage of the above-described flowmeter as the drag-producing bluff body. Conveniently, the rods can also serve as probes for sensing the pressure in the flow passage. In the preferred embodiment, one rod is radially oriented upstream of the restriction and another rod is radially oriented at an angle to the first rod within the restriction. The rods have hollow interiors connected to a .DELTA.P transducer. The first rod has a chamfered end facing upstream.
Claims27
A vortex generating flowmeter comprising:
- a first port;
- a second port;
- a flow measurement passage between the ports;
- a restriction formed in the flow passage between the first and second ports, the restriction comprising a converging-diverging nozzle;
- a rod producing drag in the passage between the restriction and the second port;
- and
- means for sensing gas pressure in the vicinity of the rod.
4 more elements
Dependencies are inferred from the claim text.