Title:
MEASURING DEVICE FOR VELOCITY OF FLOW OF FLUID
Document Type and Number:
Japanese Patent JPS6140512
Kind Code:
A
Abstract:
Disclosed is an apparatus for overcoming acoustic path angle limitations and transducer coupling problems when an ultrasonic flow measurement method is used to measure water velocity in annular regions such as the downcomer of a nuclear steam generator. In accordance with one embodiment, two axially spaced ultrasonic transducers are coupled perpendicularly to the outer surface of a shell and align respectively with two 45 DEG reflecting surfaces on a structure which is inserted into the downcomer during shutdown. The acoustic path between reflecting surfaces is essentially in line with the fluid flow as desired for best sensitivity and accuracy. Acoustic performance is optimized and transducer mounting is simplified by having the transducers perpendicular to the shell surface. Other embodiments are disclosed for measuring the average flow velocity by angling the acoustic path across the annular region of the downcomer.
Inventors:
JIEIMUZU REO MAKUSHIEIN
Application Number:
JP16039985A
Publication Date:
February 26, 1986
Filing Date:
July 22, 1985
Export Citation:
Assignee:
WESTINGHOUSE ELECTRIC CORP
International Classes:
G01F1/66; G01P5/24; G01P5/00; (IPC1-7): G01F1/66; G01P5/00
Attorney, Agent or Firm:
Michiteru Soga
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