G - Physics – 21 – C
Patent
G - Physics
21
C
359/38, 359/44
G21C 9/00 (2006.01) G21C 15/18 (2006.01) G21D 9/00 (2006.01)
Patent
CA 1326717
Abstract In heating reactors which in particular operate according to the principle of internal natural circulation, an afterheat removal circuit is connected to an intermediate circuit via at least one flow rate regulating unit which maintains a minimum flow through the afterheat removal cooler during afterheat removal operation. The intermediate circuit connects a first heat exchanger inside the reactor to a second heat exchanger via a hot and a cold line, the cold line containing a pump. According to the invention, a controllable element of power fluidics, a so- called vortex chamber valve with three hydraulic connections for the supply, control and outlet current, is used as the flow rate regulating unit, whereby the influx pipe of the afterheat removal circuit is connected to the hot line of the intermediate circuit via an internally controllable current path of the vortex chamber valve and the hydraulic connection for the control current is connected to the cold line on the delivery side of the pump of the intermediate circuit. The invention also relates to use of the afterheat removal circuit with a vortex chamber valve in boiling water reactors or pressurized water reactors which serve to generate driving steam for steam turbo-generator units.
614208
Batheja Pramod
Gobel Andreas
Rau Peter
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
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