Measuring and testing – Volume or rate of flow – System
Patent
1975-12-19
1977-03-01
Gill, James J.
Measuring and testing
Volume or rate of flow
System
73198, 73231M, G01F 186
Patent
active
040096149
ABSTRACT:
A method and apparatus for monitoring two-phase flow is provided that is particularly related to the monitoring of transient two-phase (liquid-vapor) flow rates such as may occur during a pressurized water reactor core blow-down. The present invention essentially comprises the use of flanged wire screens or similar devices, such as perforated plates, to produce certain desirable effects in the flow regime for monitoring purposes. One desirable effect is a measurable and reproducible pressure drop across the screen. The pressure drop can be characterized for various known flow rates and then used to monitor nonhomogeneous flow regimes. Another useful effect of the use of screens or plates in nonhomogeneous flow is that such apparatus tends to create a uniformly dispersed flow regime in the immediate downstream vicinity. This is a desirable effect because it usually increases the accuracy of flow rate measurements determined by conventional methods.
REFERENCES:
patent: 1917710 (1933-07-01), Groetken
patent: 2896084 (1959-07-01), MacDonald
Sheppard John D.
Tong Long S.
Carlson Dean E.
Deckelmann Louis M.
Gill James J.
The United States of America as represented by the United States
Zachry David S.
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