Title:
COOLING MECHANISM FOR REACTOR VESSEL WALL
Document Type and Number:
Japanese Patent JP3126550
Kind Code:
B2
Abstract:
PURPOSE: To equalize the circumferential distribution of temperature in a cooling channel and restrain the occurrence of a circumferential drift in a cooling mechanism for a reactor vessel wall.
CONSTITUTION: A core 1 is contained in a reactor vessel 4, whose interior is separated into a high-temperature plenum 2 and a low-temperature plenum 3. A low-temperature fluid for cooling the wall of the reactor vessel 4 flow in an ascending channel 6 and a descending channel 7 and stays in a staying layer 8. In a cooling mechanism for a reactor vessel wall where liner plates 9, 10 and 11 installed inside along the wall of the reactor vessel 4 separate the channels 7 and 8 and the staying layer 8, a partition 5 is installed in the upper part of the descending channel 7 to narrow the descending flow of low- temperature fluid. The ratio of the narrowed width α of the descending flow of a low-temperature fluid to that D of the descending channel is set at 0.5 to 1.
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Inventors:
Kengo Iwashige
Application Number:
JP14333293A
Publication Date:
January 22, 2001
Filing Date:
June 15, 1993
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G21C15/02; (IPC1-7): G21C15/02
Domestic Patent References:
| JP261594A | ||||
| JP63115094A | ||||
| JP3287094A |
Attorney, Agent or Firm:
Katsuo Ogawa (2 outside)