A method for forming integral compression structure of reactor internals

A compacted structure and integral technology, applied in the direction of additive processing, can solve the problems of large welding deformation, complex welding process, large processing deformation, etc., to shorten the manufacturing cycle, improve the forming quality, and have no difference in material properties. Effect

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 manufacturing process takes a long time period, the welding process is more complicated, and the welding deformation is large. When processing a large number of through holes, the processing cycle is long and the processing deformation is large.

Method used

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  • A method for forming integral compression structure of reactor internals
  • A method for forming integral compression structure of reactor internals
  • A method for forming integral compression structure of reactor internals

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Experimental program
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Embodiment

[0076] In the compression structure design of the existing reactor internals, based on the assembly and welding process of each component, the compression structure is divided into an upper support flange (1), a skirt tube (2) and a lower support plate (3), such as attached figure 1 . The skirt (2) is rolled into a cylindrical structure by sheet metal, 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 lower support plate (3) are assembled Afterwards, circumferential full-penetration welding is carried out, and then multi-layer radially uniformly distributed flow-through holes (4) are processed to manufacture a complete compacting structure.

[0077] The present invention is based on the electro-fusion additive manufacturing technology, and designs the compression structure as an integral structure, that is, cancels the connection welds between the structures and the special re...

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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 compression structure of reactor internals; the purpose of the invention is to provide a method for forming an integral compression structure of reactor internals in view of the deficiencies in the prior art; cancel The production of profiles and supporting welding materials is shortened, and the production cycle is shortened; all full-penetration welds are eliminated, welding deformation of the structure is avoided, and the forming quality is improved; the process of processing a large number of flowing water holes is eliminated, avoiding The processing deformation of the structure; the integrally formed compression structure is adopted, the structural continuity is good, and the mechanical properties are better; the structural material properties of the integrally formed compression structure are uniform, especially there is no difference in the 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 integrated compression structure of reactor internal components. Background technique [0002] The compression structure of the reactor internals is a key part of the reactor structure. At present, the commonly used manufacturing process is: first, the plate is rolled and welded to form the skirt, and the upper support flange and the lower support plate processed by forgings are fully welded to the skirt. The welded connection is integrated, and multi-layer flow holes distributed uniformly in the radial direction are processed. The required raw materials include plates, forgings and supporting welding materials. The time period of this manufacturing process is longer, the welding process is more complicated, and the amount of welding deformation is larger. When processing a large number of through holes, the processing cycle is longer an...

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 饶琦琦张宏亮许斌罗英余志伟陈训刚李庆刘晓王留兵蒋兴钧何培峰胡雪飞
Owner NUCLEAR POWER INSTITUTE OF CHINA
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