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Steam cavity structure and pressure vessel of double-chamber cylindrical supercritical water-cooled reactor

A pressure vessel and supercritical technology, which is applied to reactors, cooling devices, and greenhouse gas reduction, can solve the problems of increased manufacturing and installation difficulty, poor stability, and affecting reactor efficiency, so as to achieve low manufacturing and installation difficulty and improve efficiency , good structural stability

Active Publication Date: 2016-05-25
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a double-chamber cylindrical supercritical water-cooled reactor steam chamber structure to overcome the existing defects of poor steam chamber structure stability, increased manufacturing and installation difficulty, and affecting reactor efficiency

Method used

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  • Steam cavity structure and pressure vessel of double-chamber cylindrical supercritical water-cooled reactor
  • Steam cavity structure and pressure vessel of double-chamber cylindrical supercritical water-cooled reactor
  • Steam cavity structure and pressure vessel of double-chamber cylindrical supercritical water-cooled reactor

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Effect test

Embodiment 1

[0036] like figure 1 As shown in the figure, the steam chamber structure of the double-chamber cylindrical supercritical water-cooled reactor is mainly composed of a cylindrical body 1 and an upper cavity plate 2 and a lower cavity plate 3 arranged in the cylindrical body 1. The upper cavity plate 2 and the lower cavity plate 3 are composed of The space between the two is enclosed by the cylinder 1 to form a cavity, the cylinder 1 is a cantilever structure, and the upper cavity plate 2 is directly connected to the cylinder wall of the cylinder 1 .

[0037]The cylinder body 1 can adopt a variety of existing methods, such as hooks, cantilever tubes, axial protrusions, etc., to form a cantilever structure. The cantilever structure is adopted, and the cantilever is used to hang in the pressure vessel during installation. The installation process is very convenient, and the cylinder body 1 only needs to be hoisted to the installation table in the pressure vessel. In addition, the ...

Embodiment 2

[0039] like figure 1 As shown, in this embodiment, on the basis of Embodiment 1, the cylindrical body 1 is designed into two parts, a flange 101 and a main cylindrical body 102 , and the flange 101 is arranged on the top of the main cylindrical body 102 . In this embodiment, the flange 101 is preferably used as the cantilever of the cylinder 1. The flange 101 has a simple structure and is easy to manufacture, and the flange 101 is in surface contact with the mounting platform in the pressure vessel, which makes the structure of the present invention more stable.

Embodiment 3

[0041] like figure 1 and figure 2 As shown, in this embodiment, on the basis of Embodiment 1, the upper cavity plate 2 is preferably connected to the cylinder wall of the cylinder body 1 by cold-fitting pins. The cold-fitting pins have high connection positioning accuracy and small deformation, and are installed by cold-fitting pins. The upper cavity plate 2 can obtain higher installation accuracy, and the cold-loading pin is a detachable structure, which is convenient for maintenance.

[0042] The upper cavity plate 2 and the lower cavity plate 3 are provided with moderator holes 6 , and the cylinder wall of the cylinder body 1 is provided with a steam outlet 8 . The moderator hole 6 is used to pass the moderator pipe on the fuel assembly, so that the moderator can enter the interior of the fuel assembly. The steam outlet 8 is used to discharge the steam accumulated in the cavity.

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Abstract

The invention discloses a double-chamber cylinder supercritical water cooled reactor steam chamber structure which mainly comprises a cylinder (1), and an upper chamber plate (2) and a lower chamber plate (3) which are arranged in the cylinder (1), wherein the space between the upper chamber plate (2) and the lower chamber plate (3) is surrounded by the cylinder (1) to form a chamber; the cylinder (1) has a cantilever-type structure; and the upper chamber plate (2) is directly connected with the wall of the cylinder (1). The double-chamber cylinder supercritical water cooled reactor steam chamber structure has the advantages of being good in structural stability and low in manufacture and installation difficulty, and not influencing the efficiency of a reactor. The invention also discloses a supercritical water cooled reactor pressure vessel with the steam chamber structure.

Description

technical field [0001] The invention relates to the field of nuclear industry, in particular to a supercritical water-cooled reactor internal component. Background technique [0002] Supercritical water-cooled reactor (SCWR) is a kind of reactor with water as coolant, and its outlet water state is above the critical point (374℃, 22.1MPa). Due to the high operating temperature and pressure, and considering the limitations of existing materials and manufacturing levels, the supercritical water-cooled reactor needs to be designed as a multi-process structure. Under this design, the steam chamber becomes an important structure for the collection of supercritical water at the outlet of the water-cooled reactor. At the same time, the steam chamber must also be equipped with a diversion device for each process coolant. [0003] Currently, only in the EU supercritical water-cooled reactor design scheme, steam chambers for multi-pass structures have been proposed. However, the stea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C15/16
CPCY02E30/30
Inventor 范恒张宏亮杜华周禹慕殿鹏李娜李宁
Owner NUCLEAR POWER INSTITUTE OF CHINA