Liquid acoustic waveguide tube

Details Liquid acoustic waveguide tube Liquid acoustic waveguide tube

G - Physics

01

N

349/37

G01N 29/02 (2006.01) F01K 13/00 (2006.01) F22B 37/38 (2006.01) G01N 29/032 (2006.01) G01N 29/22 (2006.01) G01N 29/24 (2006.01) G01V 1/00 (2006.01)

Patent

CA 1315385

ABSTRACT OF THE INVENTION A monitor for detecting the presence of liquid in a fluid supply conduit wherein the fluid has at least a liquid phase, and wherein bubbles may form in the fluid, is shown to include an ultrasonic signal transmitter for generating and transmitting an ultrasonic signal, an ultrasonic signal receiver, means for attaching the transmitter and receiver to the conduit, and a waveguide which confines a portion of the fluid so that the ultrasonic signal is guided to the receiver when liquid is present in the confined portion. The waveguide also tends to exclude bubbles from the confined portion. The waveguide may include a cylinder positioned in the conduit between the transmitter and the receiver and which has a plurality of openings to allow the ingress and egress of liquid.

609049

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