Liquid acoustic waveguide tube

Details Liquid acoustic waveguide tube Liquid acoustic waveguide tube

1988-09-06

1990-09-04

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Transmitter systems

367908, G01S 1500

Patent

active

049550047

ABSTRACT:
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.

REFERENCES:
patent: 3693445 (1972-09-01), Johnson
Detection of Water Induction in Steam Turbines, Phase 3: Field Demonstration, Electric Power Research Institute (EPRI), Project 637-2, Final Report EPRI CS-4285, Sep. 1985.
Results of a Field Verification for a Turbine Water Induction Monitor, Presented at the EPRI Seminar on Fossil Plant Retrofits for Improved Heat Rate and Availability, Dec. 1-3, 1987 in San Diego, Calif.

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