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Liquid cooling supporting tool for plug-in type connecting pipe and reactor core measuring pipe anti-deformation method

A plug-in, measuring tube technology, applied in welding equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of core measuring tube deformation, core measuring tube being easily heated, large deformation, etc., and speed up the reduction of weld seam temperature , It is not easy to be deformed by heat, and the effect of avoiding welding deformation

Active Publication Date: 2022-05-13
CHINA ERZHONG GRP DEYANG HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The reactor pressure vessel is the core equipment of the reactor, such as Figure 1 shows the schematic diagram of the upper head core measurement tube. The core measurement tube is made of nickel-based material with an outer diameter of 144mm and a wall thickness of 16mm. The core measurement The side of the tube extending into the upper head is set as an inclined groove, and the end surface of the core measuring tube on the side of the groove forms an angle of 45° with the inner surface of the upper head, and the length of the core measuring tube extending into the head is about 40 mm. The weld seam is asymmetrical with respect to the axis of the core measuring tube, and the size of the weld seam is too small to allow two welders to weld at the same time. The current welding method generally uses robots to perform one-sided climbing welding, and the left and right sides of the weld bead are alternately applied. However, during the welding process, due to the different heat of the welds on both sides, the core measuring tube is prone to large deformation due to heat, and due to the structural characteristics of the product, the shape of the core measuring tube cannot be processed after welding , resulting in low welding dimensional accuracy of the core measuring tube, unable to meet product design requirements
[0004]Therefore, there is an urgent need for a technical solution to solve the direct welding between the existing core measuring tube and the head, and the core measuring tube is easy to be heated to produce a large Deformation, technical problems that cannot meet product design requirements

Method used

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  • Liquid cooling supporting tool for plug-in type connecting pipe and reactor core measuring pipe anti-deformation method
  • Liquid cooling supporting tool for plug-in type connecting pipe and reactor core measuring pipe anti-deformation method
  • Liquid cooling supporting tool for plug-in type connecting pipe and reactor core measuring pipe anti-deformation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as Figure 2-Figure 9 As shown, the liquid-cooled support tooling for plug-in connection includes a connecting block 1, a strut 2 and four moving rods 3. A number of embedding grooves 11 are arranged on the connecting block 1, and an embedding block 31 is arranged on each moving rod 3. The embedding block 31 is slidably matched with the embedded groove 11, and the four moving rods 3 encircle and form a tapered expansion hole 4. The strut 2 includes a gradual change section 21, a prism section 22 and a thread section 23 arranged coaxially in sequence, and nuts are arranged on the thread section 23. As the adjustment piece 5, the gradual change section 21 of the strut 2 is adapted to the conical expansion hole 4, and the prism section 22 is adapted to the limit hole 12 arranged in the middle of the connecting block 1. By rotating the adjustment piece 5, the strut 2 can be adjusted along the The expansion hole 4 moves axially relative to the expansion hole 4, and the ...

Embodiment 2

[0054] Such as Figure 2-Figure 12 As shown, the structure of the supporting liquid-cooled tooling for tube-sheet welding in this embodiment is the same as that of Embodiment 1, the difference is that the connection block 1 is connected with an extension plate 6, and the extension plate 6 includes a blocking portion, and the blocking portion It can be blocked in the moving direction of the adjustment member 5 .

[0055] In the supporting liquid-cooled tooling for tube sheet welding in this embodiment, an extension plate 6 is provided on the connection block 1. The extension plate 6 is preferably L-shaped. After the extension plate 6 is connected to the connection block 1, one of the sides can be blocked by the adjustment member 5 In the direction of movement, the extension plate 6 is used to assist in limiting the relative movement direction of the strut 2 and the expansion hole 4 .

[0056] Specifically, the extension board 6 includes a first board body, a second board body ...

Embodiment 3

[0059] Such as Figure 2-Figure 12 As shown, the structure of the liquid-cooled supporting tool for plug-in connection of this embodiment is the same as that of Embodiment 1 or Embodiment 2, the difference is that each moving rod 3 is respectively provided with a liquid flow channel 7, and each liquid flow channel 7 is respectively Connected to the liquid supply mechanism 8 , temperature detection devices are installed on the inlet and outlet sides of each liquid flow channel 7 , and all temperature detection devices are connected to the controller 9 by communication, and the controller 9 is electrically connected to the liquid supply mechanism 8 .

[0060] In the liquid-cooled support tooling for plug-in connection of this embodiment, the liquid flow channel 7 includes a liquid inlet flow channel 71, a liquid outlet flow channel 72 and a communication flow channel 73, and the liquid inlet flow channel 71 and the liquid outlet flow channel 72 move along the moving rod 3 The le...

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PUM

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Abstract

The invention relates to the technical field of tube plate welding, in particular to a liquid cooling supporting tool for a plug-in type connecting tube and an anti-deformation method of a reactor core measuring tube.The liquid cooling supporting tool for the plug-in type connecting tube comprises a connecting block, a supporting rod and at least two moving rods, the connecting block is provided with an embedding groove, the end of each moving rod is provided with an embedding block, and the supporting rod is arranged in the embedding groove. The embedded block is in sliding fit with the embedded groove, all the moving rods define a conical expansion hole, the supporting rod comprises a transition section, the transition section can move in the axial direction of the expansion hole to expand the expansion hole, the moving rods are attached to the inner wall of the connecting pipe, the rigidity of the connecting pipe is improved, heat exchange transmission heat dissipation is conducted in the axial direction of the connecting pipe through a tool, and the service life of the connecting pipe is prolonged. Welding seam temperature is rapidly reduced, and welding quality is ensured; by adopting the tool to assist the welding of the reactor core measuring tube, the rigidity of the reactor core measuring tube can be improved, the temperature reduction of a welding seam between the reactor core measuring tube and the end socket can be accelerated, the welding deformation caused by overlarge circumferential temperature difference can be avoided, and the welding quality can be ensured.

Description

technical field [0001] The invention relates to the technical field of tube-sheet welding, in particular to a liquid-cooled supporting tool for plug-in connection and a method for preventing deformation of a core measuring tube. Background technique [0002] The merged Hualong No. 1 nuclear power technology is the third-generation advanced pressurized water reactor nuclear power technology independently developed by my country with completely independent intellectual property rights. It is also the mainstream in China and the most internationally competitive advanced nuclear power technology. The technical specification requirements have greatly improved the technical quality level of key parts of the nuclear island. At the same time, with the increase in the size of parts and a series of structural improvements such as integrated design, it is more difficult to control quality stability. [0003] The reactor pressure vessel is the core equipment of the reactor, such as figu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K31/00
CPCB23K31/003Y02E30/30
Inventor 郑建能朱永有刘玉平李厚彬何宏宇徐常顺李莉刘红梅常旭王黎
Owner CHINA ERZHONG GRP DEYANG HEAVY IND
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