28 June 2015 to 2 July 2015
JW Marriott Starr Pass Resort
Etc/GMT-7 timezone

Series Supply of Cryogenic Venturi Tube Flowmeters for the ITER Project

1 Jul 2015, 14:30
15m
Tucson Ballroom GH ()

Tucson Ballroom GH

Contributed Oral Presentation CEC-15 - Instrumentation and Controls C3OrG - Cryogenic Instrumentation and Control Systems

Speaker

Mr Jérôme ANDRE (CEA-SBT, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France)

Description

In the framework of the ITER project, the CEA-SBT has been contracted to supply 277 venturi tube flowmeters to measure the distribution of helium in the superconducting magnets of the ITER tokamak. Six sizes of Venturi tube have been designed so as to span a measurable helium flowrate range from 0.1 g/s to 400 g/s. They operate, in nominal conditions, either at 4K or at 300K, and in a nuclear and magnetic environment. Due to the cryogenic conditions and the large number of venturi tubes to be supplied, an individual calibration of each venturi tube would be too expensive and time consuming. Studies have been performed to produce a design which will offer high repeatability in manufacture, reduce the geometrical uncertainties and improve the final helium flowrate measurement accuracy. On the instrumentation side, technologies for differential and absolute pressure transducers able to operate in applied magnetic fields need to be identified and validated. The complete helium mass flow measurement chain will be qualified in four test benches: - A helium loop at room temperature to insure the qualification of a statistically relevant number of venturi tubes operating at 300 K. - A supercritical helium loop for the qualification of venturi tubes operating at cryogenic temperature (a modification to the HELIOS test bench). - A dedicated vacuum vessel to check the helium leak tightness of all venturi tubes. - A magnetic test bench to qualify different technologies of pressure transducer in applied magnetic fields up to 100mT.

Primary author

Mr Jérôme ANDRE (CEA-SBT, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France)

Co-authors

Mr Eric ERCOLANI (CEA-SBT, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France) Mr Jean-Marc PONCET (CEA-SBT, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France) Mr Jean-YVES JOURNEAUX (ITER International Organisation, 13115 Saint Paul lez Durance, France) Dr Nicholas CLAYTON (ITER International Organisation, 13115 Saint Paul lez Durance, France)

Presentation Materials

There are no materials yet.
Your browser is out of date!

If you are using Internet Explorer, please use Firefox, Chrome or Edge instead.

Otherwise, please update your browser to the latest version to use Indico without problems.

×