Published March 20, 1987 | Version v1
Patent Metadata-only

Installation and process for measuring void fraction in pipes carrying a fluid

Creators

Description

This installation is made by a radiation source and a detector in the opposite side of the pipe. A shield absorber is moved periodically to obturate the collimator of the source with a modulation frequency. The signal processing is used to transform the time representation in a frequency representation

Availability note (English)

Available from Institut National de la Propriete Industrielle, Paris (France).

Abstract (French)

Installation de mesure du taux de vide dans une canalisation vehiculant un fluide. Elle comprend un bloc source renfermant une source de rayonnement, un detecteur delivrant un signal qui est fonction du rayonnement recu. Un ecran absorbant le rayonnement est apte a etre anime d'un mouvement periodique de maniere a obturer le collimateur de chacune desdites sources avec une frequence determinee dite frequence de modulation. Des moyens de traitement du signal delivre par le detecteur transforment la representation en fonction du temps en une representation en frequence

Additional details

Additional titles

Original title (French)
Installation et procede de mesure du taux de vide dans une canalisation vehiculant un fluide

Publishing Information

Imprint Pagination
31 p.
IPC:
Int. Cl. G01n23/12; G21c17/02.
IPC
Int. Cl. G01n23/12; G21c17/02.
Patent number
FR patent document 2587490/A/

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
19033121
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
FLUID FLOW; GAMMA DETECTION; GAMMA SOURCES; PWR TYPE REACTORS; REACTOR COOLING SYSTEMS; ROTATION; SHIELDS; TWO-PHASE FLOW; VOID FRACTION
Descriptors DEC
COOLING SYSTEMS; DETECTION; ENRICHED URANIUM REACTORS; POWER REACTORS; RADIATION DETECTION; RADIATION SOURCES; REACTOR COMPONENTS; REACTORS; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Secondary number(s)
FR patent application 8513891.