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Containment vessel air cooling system for million-kilowatt level nuclear reactor

A technology for nuclear reactors and air-cooling systems, applied in the field of nuclear power, can solve problems such as affecting physical health and long irradiation time of control rods, and achieve the effects of ensuring physical health, simple and quick disassembly process, and reducing irradiation time.

Inactive Publication Date: 2015-05-06
LINGAO NUCLEAR POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a simple and quick disassembly, which can reduce the radiation exposure of dismantling personnel, in view of the fact that many bolts are used to fix the cover plate in the prior art, and the inconvenient disassembly makes dismantling personnel suffer from control rod radiation for a long time, which affects their health. Containment air-cooling system for million-kilowatt nuclear reactors, which can be used according to time and can well seal the inspection port

Method used

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  • Containment vessel air cooling system for million-kilowatt level nuclear reactor
  • Containment vessel air cooling system for million-kilowatt level nuclear reactor
  • Containment vessel air cooling system for million-kilowatt level nuclear reactor

Examples

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Embodiment 1

[0030] Embodiment 1, as figure 1 As shown, a containment air-cooling system for a million-kilowatt nuclear reactor includes a fan (not shown in the figure), an air duct 1, and an inspection port 11 is opened on the air duct 1, and the inspection port 11 is provided with an upward direction The outer folded edge 12, the inspection port 11 is provided with a cover plate 2 for blocking the inspection port 11, and the cover plate 2 is press-fitted on the folded edge 12 of the inspection port 11. A circle of gasket 21 is provided on the folded edge 12 of the inspection opening 11, and when the cover plate 2 closes the inspection opening 11, the sealing gasket 21 is pressed to seal the inspection opening 11. The edge of the cover plate 2 is provided with a downward turning edge 22 for enclosing the gasket. The top surface of the cover plate 2 is provided with a cover plate pressing member 3, and the cover plate pressing member 3 is detachably and rotationally connected to the air d...

Embodiment 2

[0037] Embodiment 2, as Figure 5 As shown, the second type of containment air-cooling system for a million-kilowatt nuclear reactor includes a fan and an air duct 1. An inspection port (not shown in the figure) is opened on the air duct 1, and an inspection port is provided for sealing The cover plate 2 of the inspection opening is provided with a sealing slot at the inspection opening, and the cover plate 2 is plugged into the sealing slot to seal the inspection opening, and the cover plate 2 is locked by the locking mechanism 5 .

[0038] The sealing slot is arranged along the periphery of the inspection opening of the air duct 1, and only an insertion opening for inserting the cover plate 2 into the sealing slot is left, and the opening of the sealing slot is in the opposite direction. In this embodiment, the inspection port is square, therefore, there are flanges on the three sides of the inspection port that are folded upwards, and a pressure frame 7 is provided on the f...

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Abstract

The invention discloses a containment vessel air cooling system for a million-kilowatt level nuclear reactor. The containment vessel air cooling system comprises a fan and an air duct, wherein an access hole is formed on the air duct and is provided with a cover plate used for plugging the access hole; the top surface of the cover plate is fixedly provided with a cover plate compressing piece; the cover plate compressing piece is detachably connected to the air duct in a rotating manner through a rotating mechanism and is detachably locked with the air duct through a locking mechanism which is arranged at interval to the rotating mechanism, so that the cover plate is fixed on the access hole in a sealing manner. Aiming at the defect that the cover plate in the prior art is fixed by adopting a great number of bolts and is inconvenient to disassemble, so that disassembly personnel are radiated by control rods for a long time, and the body health is influenced, the invention provides the containment vessel air cooling system for the million-kilowatt level nuclear reactor, which is easy and fast to disassemble and has good sealing performance.

Description

technical field [0001] The invention belongs to the technical field of nuclear power. The invention relates to an auxiliary device for a containment vessel of a mega-kilowatt nuclear reactor, in particular to a containment air-cooling system for a mega-kilowatt nuclear reactor. Background technique [0002] At present, in the million-kilowatt-level nuclear reactor generating units, the nuclear reactor containment of each unit has a control rod drive mechanism air cooling system (RRM). The function of the RRM system is to cool down the control rod drive mechanism power supply coil unit and position indicator. , to maintain their temperature within an acceptable range in order to ensure their normal operation. The air-cooling system mainly includes a fan and an air duct, and the air duct is provided with an inspection port. When the air-cooling system is working, the inspection port is sealed and closed by the cover plate, but the top cover of the reactor containment and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C9/004G21C15/18
CPCY02E30/30
Inventor 李书周熊颖峰恽健
Owner LINGAO NUCLEAR POWER
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