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US 2002/0162518 A1Published application
High pressure steam water injector comprising an axial drain
AssigneeCommissariat a l'Energie Atomique
InventorsPatrick Dumaz, Bertrand Duc
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Abstract
The steam injector is characteristic in its high pressure and improved start-up. It uses an axial drain (10) positioned in the centre of the neck (5) downstream from the mixing chamber (4) and inserted in the diffuser (7) for the purpose of narrowing the section of the neck (5) and evacuating a large part of the steam which has not been condensed. The axial drain (10) may be mounted so that it is axially mobile. Application to the water supply for steam generators in pressurized water nuclear reactors.
Claims4
High pressure steam injector comprising:
- a steam inlet (1) leading into:
- a steam nozzle (2) leading into:
- a mixing chamber (4);
- a ring-shaped entry chamber 3;
- a neck (5) positioned at the exit of the mixing chamber (4);
- a diffuser (7) positioned at the exit of neck (5), and
- an outlet (8) positioned downstream from the diffuser (7),
- characterized in that it comprises an axial drain (10) formed of an evacuation duct to reduce the section of the neck (5) and to evacuate some of the steam and evacuate it towards the outside (9).
5 more elements
Dependencies are inferred from the claim text.