A REMOTE MEASURING FLOW METER FOR PETROLEUM AND OTHER INDUSTRIAL APPLICATIONS

The blown venturi flow meter based on a Coanda switched venturi resist ance, has been investigated for use in petroleum and other industrial applications. It produces self-induced oscillations in the fluid at a frequency proportional to the rate of flow and the pressure waves are transmitted via the Rowing fluid and detected downstream. Experimental work has been conducted by measuring the attenuation of the waves in air flow along a 28.5 m long, 0.05 m diameter pipe downstream of the f low meter, ensuring that the remote flow metering concept is realized. Predictions of pressure pulse strength, pressure loss and frequency f or the flow meter in an oil production string have been made. Potentia l applications of this meter to nuclear fuel reprocessing and other ho stile environments have also been demonstrated. Furthermore, accuracy and limitations of the flow meter for engineering applications are con sidered.