Ultrasonic liquid-in-line detector for tubes

Patent · Tue Jan 01 00:00:00 EST 1991

OSTI ID:875270

Piper, Thomas C. ^[1]

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1. Idaho Falls, ID

An apparatus and method for detecting the presence of liquid in pipes or tubes using ultrasonic techniques A first piezoelectric crystal is coupled to the outside of the pipe or tube at the location where liquid in the tube is to be detected. A second piezoelectric crystal is coupled to the outside of the pipe or tube at the same location along the tube but circumferentially displaced from the first crystal by an angle around the pipe or tube of less than 180.degree.. Liquid in the pipe or tube is detected by measuring the attenuation of an ultrasonic signal sent by the first piezoelectric crystal and received by the second piezoelectric crystal.

• Research Organization: Idaho National Laboratory (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC07-84ID12435
• Assignee: United States of Amercia as represented by United States (Washington, DC)
• Patent Number(s): H000912
• Application Number: 07/318874
• OSTI ID: 875270
• Resource Relation: Patent File Date: 1989 Mar 06
• Country of Publication: United States
• Language: English

Related Subjects

statutory invention registration
ultrasonic
liquid-in-line
detector
tubes
apparatus
method
detecting
presence
liquid
pipes
techniques
piezoelectric
crystal
coupled
outside
pipe
tube
location
detected
circumferentially
displaced
angle
180
degree
measuring
attenuation
signal
received
ultrasonic signal
piezoelectric crystal
ultrasonic liquid-in-line
ultrasonic techniques
ultrasonic technique
ultrasonic liquid
sonic signal
liquid-in-line detector
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