发明名称 |
Void/particulate detector |
摘要 |
Voids and particulates are detected in a flowing stream of fluid contained in a pipe by a detector which includes three transducers spaced about the pipe. A first transducer at a first location on the pipe transmits an ultrasonic signal into the stream. A second transducer detects the through-transmission of the signal at a second location and a third transducer at a third location upstream from the first location detects the back-scattering of the signal from any voids or particulates. To differentiate between voids and particulates a fourth transducer is positioned at a fourth location which is also upstream from the first location. The back-scattered signals are normalized with the through-transmission signal to minimize temperature fluctuations.
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申请公布号 |
US4542644(A) |
申请公布日期 |
1985.09.24 |
申请号 |
US19830535979 |
申请日期 |
1983.09.26 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE UNITED STATES DEPARTMENT OF ENERGY |
发明人 |
CLAYTOR, THOMAS N.;KARPLUS, HENRY B. |
分类号 |
G01F1/66;G01F1/74;G01N29/032;(IPC1-7):G01N15/06 |
主分类号 |
G01F1/66 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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