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US 7,352,838 B2Granted
Reactor pressure vessel of a boiling water reactor and method for water vapor separation in a reactor pressure vessel of a boiling water reactor
AssigneeAreva Np
InventorNikolay Kolev
Life of this patent
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Abstract
A pressure vessel of a reactor has a flow space between the reactor core and a separation device for separating water from water steam. The cross-section area of the flow section of the space expands upstream of the separation device. This makes it possible to pre-separate a water-water steam mixture coming from the reactor core. Due to the pre-separation, only the central area is provided with a cyclone device, and only drying equipment is disposed near the cyclone device. The novel approach makes it possible to reduce the height of the pressure vessel of a reactor.
Claims10
A reactor configuration, comprising:
- a reactor core of a boiling water reactor;
- a separation device for steam/water separation disposed above said reactor core of the boiling water reactor;
- a flow space formed between the reactor core and said separation device;
- an internal cross-sectional area;
- and
- a flow component disposed in said flow space, said flow component having a central passage defining a flow cross-sectional area, said flow component having an entry side narrowing in a flow direction for initially reducing said flow cross-sectional area and an exit side expanding in said flow direction for increasing said flow cross-sectional area ahead of said separation device;
- said flow cross-sectional area, directly after said flow component with respect to the flow direction, being substantially defined by said internal cross-sectional area;
- and
- said separation device including a cyclone device disposed substantially only in a central region of said flow cross-sectional area.
6 more elements
Dependencies are inferred from the claim text.