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A reactor single-layer containment vessel and its construction method

A containment and reactor technology, applied in reactors, nuclear engineering, industrial buildings, etc., can solve the problems of overhaul and replacement of large equipment, high internal environmental requirements, and long arrival time of equipment, so as to reduce the weight of the structure and improve the quality of the aircraft. Impact performance and the effect of improving structural mechanical properties

Active Publication Date: 2021-08-24
CHINERGY CO LTD
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Problems solved by technology

[0004] At the same time, due to the large number of nuclear power equipment and the arrival time is often inconsistent, and the installation of equipment during the construction period has high requirements for the internal environment, it must meet the requirements of the temporary sealing of the containment and the clean area in the shell, and the follow-up large equipment also exists within the service life. Repair and Replacement Issues

Method used

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  • A reactor single-layer containment vessel and its construction method
  • A reactor single-layer containment vessel and its construction method
  • A reactor single-layer containment vessel and its construction method

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Embodiment Construction

[0029] The reactor single-layer containment vessel proposed by the present invention has a structure such as figure 1 with figure 2 As shown in , the single-layer containment vessel of the reactor is composed of the lower shell part and the upper dome part, and the shell and the dome are made of steel plate 1 and concrete structure of shear-one-way non-pull-resistant member; the steel plate 1 is set in the safe On the inner side of the shell, the shear-unidirectional non-pullout members are evenly distributed on the steel plate, and the shear-unidirectional non-pullout members are composed of stiffeners 2, pegs 3 and belt straights arranged in an oblique or orthogonal grid. The smooth shear reinforcement 4 of the threaded anchor plate is composed of the stiffener 2, the stud 3 and the smooth shear reinforcement 4 of the anchor plate with straight threads respectively welded and fixed to the steel plate 1, and the upper end of the smooth shear reinforcement 4 passes through th...

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Abstract

The invention provides a reactor single-layer containment vessel, which belongs to the technical field of nuclear power engineering structures. The containment structure includes the cylinder body and the dome, both of which adopt single-inner steel plate concrete (or single-side steel plate ultra-high performance concrete) structure, and on the outer surface of the steel plate, there are multiple diagonal or Orthogonal T-shaped stiffeners, studs and smooth shear bars with straight-threaded anchor plates are bonded with foam materials of calculated thickness on the rib flanges, stud caps, and top surfaces of shear bar anchor plates. The ribs, studs, and sides of the shear reinforcement are all coated with a thin layer of grease-like material. The dome considers the design of Yonglin combined with reserved holes, and the cover plate and the opening are connected and disassembled by ring flanges and high-strength bolts. The containment adopts a modular design and construction method, and one-sided steel plates and stiffeners can replace part of the concrete pouring formwork. Adopting the invention can ensure the pressure bearing and sealing requirements in the containment vessel, prevent external events and large aircraft collisions, and has remarkable engineering economy.

Description

technical field [0001] The invention relates to a reactor single-layer containment vessel and a construction method thereof, belonging to the technical field of nuclear power structure engineering. Background technique [0002] The containment is an extremely important structure in a nuclear power plant. Reactors, pressure vessels, evaporators, and safety-grade piping are all in the containment, which belongs to the third safety barrier of nuclear power plants. The containment is a structure related to nuclear safety, and it belongs to the anti-seismic Class I component. It must consider the temperature rise and pressure bearing and sealing performance under the internal pressure of the primary circuit accident conditions in the containment, and also consider the resistance to large commercial aircraft impacts and other external events. effect. [0003] Commonly used nuclear power plant containment shells are double-layer shell structures. The inner shell is made of pure st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04H5/02E04B7/10E04G21/00G21C13/10G21C13/087G21C13/093
CPCE04B7/10E04G21/00E04H5/02G21C13/087G21C13/0933G21C13/10Y02E30/30
Inventor 孙运轮王友刚殷雄李晓红陈岩张然李潇南
Owner CHINERGY CO LTD
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