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A method for forming an integral upper support structure of reactor internals

A support structure and integral technology, applied in the direction of additive processing, can solve the problems of long time period, complex welding process, large deformation, etc., and achieve the effect of shortening the manufacturing cycle, improving the forming quality, and simplifying the manufacturing process

Active Publication Date: 2021-07-20
NUCLEAR POWER INSTITUTE OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The time period of the manufacturing process is longer, the welding process is more complicated, and the amount of deformation is larger

Method used

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  • A method for forming an integral upper support structure of reactor internals
  • A method for forming an integral upper support structure of reactor internals
  • A method for forming an integral upper support structure of reactor internals

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Embodiment

[0077] In the design of the upper support structure of the existing reactor internals, based on the assembly and welding process of each component, the upper support structure is divided into an upper support flange (1), a skirt (2) and an upper support plate (3), such as figure 1 . The skirt (2) is rolled into a cylindrical structure by sheet material, and is formed by full penetration welding along the axial direction of the cylindrical structure, and then the upper support flange (1), skirt (2) and upper support plate (3) are assembled Afterwards, circumferential full-penetration welding is performed to manufacture a complete upper support structure.

[0078] The present invention is based on the electro-fusion additive manufacturing technology, and designs the upper support structure as an integral structure, that is, cancels the connecting welds between the structures and the special requirements for raw materials such as forgings and plates. Based on the electro-fusion ...

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Abstract

The invention belongs to the field of reactor structure design, and in particular relates to a method for forming an integral upper support structure for reactor internal components; The forming method of the integral upper support structure of the component integral upper support structure; the production of profiles and supporting welding materials is canceled, and the production cycle is shortened; all full-penetration welds are canceled to avoid welding deformation of the structure, The forming quality is improved; the integrally formed upper support structure is adopted, with good structural continuity and better mechanical properties; the structural material properties of the integrally formed upper support structure are uniform, especially there is no difference in material properties in the thickness direction of the structure; the manufacturing process is greatly simplified , The manufacturing cycle is greatly shortened.

Description

technical field [0001] The invention belongs to the field of reactor structure design, and in particular relates to a method for forming an integral upper support structure of reactor internal components. Background technique [0002] The upper support structure of the reactor internals is a key part of the reactor structure. The current commonly used manufacturing process is: first, the plate is coiled and welded to form the skirt, and the upper support flange and the upper support plate processed by forgings are fully welded to the skirt. The welding connection is a whole, and the required raw materials include plates, forgings and supporting welding consumables. The time period of the manufacturing process is longer, the welding process is more complicated, and the amount of deformation is larger. [0003] Electrofusion additive manufacturing technology is a 3D printing technology. Compared with traditional machining and other subtractive manufacturing technologies, it r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00B33Y10/00
Inventor 李燕张宏亮许斌罗英饶琦琦余志伟李娜张翼蒋兴钧何培峰胡雪飞李浩
Owner NUCLEAR POWER INSTITUTE OF CHINA
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