Method and device for the extraction of the condenser exhaust gases of a boiling water reactor
US5733520A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1996 |
| Grant date | Mar 31, 1998 |
| Priority date | — |
| Expiry date | Jan 16, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S422/903
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a boiling water reactor having two extraction systems, one in use and the other held as a backup, a method and apparatus for extracting condenser exhaust gases of the reactor include a preheater for heating condenser gases which are then used for heating a recombiner of the extraction system. Auxiliary steam from the turbine is directed to the preheater for heating the condenser gases. A bypass line bypasses a valve in the auxiliary steam pipeline from the turbine to the preheater. The operating extraction system receives heating steam through the auxiliary pipeline, while the backup extraction system has the valve in the auxiliary steam pipeline closed. The recombiner of the backup extraction system is kept heated by guiding steam through the bypass line to the preheater, where the steam expands and is thereby heated, and directing the expanded steam through a vent line to the recombiner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.