Ultrasonic fluid flow measurement method and apparatus
Abstract
An apparatus for measuring the flow of a fluid in a pipe using ultrasonic waves. The apparatus comprises an ultrasonic generator, a lens for focusing the sound energy produced by the generator, and means for directing the focused energy into the side of the pipe through an opening and in a direction close to parallel to the long axis of the pipe. A cone carries the sound energy to the lens from the generator. Depending on the choice of materials, there may be a quarter-wave, acoustic impedance matching section between the generator and the cone to reduce the reflections of energy at the cone boundary. The lens material has an acoustic impedance similar to that of the cone material but a different sonic velocity so that the lens can converge the sound waves in the fluid. A transition section between the lens and the fluid helps to couple the energy to the fluid and assures it is directed as close to parallel to the fluid flow direction as possible. 3 figures.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 5433718
- Patent Number(s):
- 5251490
- Application Number:
- PPN: US 7-832567
- Assignee:
- PTO; EDB-94-047018
- DOE Contract Number:
- AC09-89SR18035
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 7 Feb 1992
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; FLOWMETERS; DESIGN; FLUID FLOW; MEASURING METHODS; ULTRASONIC WAVES; MEASURING INSTRUMENTS; METERS; SOUND WAVES; 440800* - Miscellaneous Instrumentation- (1990-)
Citation Formats
Kronberg, J W. Ultrasonic fluid flow measurement method and apparatus. United States: N. p., 1993.
Web.
Kronberg, J W. Ultrasonic fluid flow measurement method and apparatus. United States.
Kronberg, J W. Tue .
"Ultrasonic fluid flow measurement method and apparatus". United States.
@article{osti_5433718,
title = {Ultrasonic fluid flow measurement method and apparatus},
author = {Kronberg, J W},
abstractNote = {An apparatus for measuring the flow of a fluid in a pipe using ultrasonic waves. The apparatus comprises an ultrasonic generator, a lens for focusing the sound energy produced by the generator, and means for directing the focused energy into the side of the pipe through an opening and in a direction close to parallel to the long axis of the pipe. A cone carries the sound energy to the lens from the generator. Depending on the choice of materials, there may be a quarter-wave, acoustic impedance matching section between the generator and the cone to reduce the reflections of energy at the cone boundary. The lens material has an acoustic impedance similar to that of the cone material but a different sonic velocity so that the lens can converge the sound waves in the fluid. A transition section between the lens and the fluid helps to couple the energy to the fluid and assures it is directed as close to parallel to the fluid flow direction as possible. 3 figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 12 00:00:00 EDT 1993},
month = {Tue Oct 12 00:00:00 EDT 1993}
}