Brazing process and device of tube-shell type heat exchanger

A shell-and-tube heat exchanger and brazing process technology, applied in auxiliary devices, manufacturing tools, metal processing and other directions, can solve the problems of poor seam filling performance, uneven flow of molten liquid brazing material, and difficulty in popularization and application. , to improve work efficiency, shorten brazing time, and improve the effect of caulking

Pending Publication Date: 2020-07-10
CENT OF EXCELLENCE FOR ADVANCED MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The molten liquid brazing material flows unevenly, and the gap filling performance is poor; this makes it difficult to popularize and apply the induction heating method in the manufacture of shell-and-tube heat exchangers for automotive engine oil cooling

Method used

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  • Brazing process and device of tube-shell type heat exchanger
  • Brazing process and device of tube-shell type heat exchanger
  • Brazing process and device of tube-shell type heat exchanger

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Embodiment Construction

[0036] Below, the present invention will be further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of not conflicting, the various embodiments described below or the technical features can be combined arbitrarily to form new embodiments. .

[0037] like Figure 1-4 As shown, this embodiment provides a brazing process for a shell-and-tube heat exchanger. The brazing process is used to melt the brazing filler metal 13 between the tube sheet 11 and the heat exchange tube 12, and to assist lifting by mechanical vibration. The flow uniformity of the brazing filler metal 13 is improved to improve the caulking effect of the brazing filler metal 13 .

[0038] The brazing process of the shell-and-tube heat exchanger in this embodiment is suitable for brazing the core assembly 10 of the shell-and-tube heat exchanger. The core assembly 10 includes a tube sheet 11 and a heat exchange tube 12. On the ...

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PUM

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Abstract

The invention discloses a brazing process and device of a tube-shell type heat exchanger, and relates to the manufacturing field tube-shell type heat exchangers. The brazing process of the tube-shelltype heat exchanger includes the following steps that a workpiece to be brazed is placed, specifically, a core assembly of the tube-shell type heat exchanger to be brazed is placed on a worktable, sothat a part to be brazed of the core assembly is located below an induction coil; the core assembly includes tube plates and heat exchange pipes; brazing filler metal is placed, specifically, the brazing filler metal is placed in counter bores at the ends of mounting through holes of the tube plates; induction heating is carried out, specifically, the induction coil is energized, and the part to be brazed is subjected to induction heating; and vibration is carried out, specifically, the worktable is driven to vibrate to cause mechanical vibration of the core assembly; and the brazing device ofthe tube-shell type heat exchanger includes the worktable, an induction heating device and a vibration device. According to the brazing process and device of the tube-shell type heat exchanger, the brazing time can be shortened, the filling effect of liquid brazing filler metal can further be improved, a brazing joint with good brazing condition is formed, and the working efficiency is significantly improved.

Description

technical field [0001] The invention relates to the field of manufacturing shell-and-tube heat exchangers, in particular to a brazing process and device for shell-and-tube heat exchangers. Background technique [0002] The shell-and-tube heat exchanger is an early and widely used heat exchanger in the industry. It has a strong structure, is easy to manufacture, and is easy to clean. It can adapt to a large range of heat transfer, fluid type, pressure and temperature. , so the adaptability is extremely strong, and it has been widely used in industrial fields such as petrochemical industry, aerospace, automobile ships, nuclear power and refrigeration. [0003] A shell-and-tube heat exchanger usually includes a shell, a tube plate at the end and a heat exchange tube. There are installation through holes on the tube plate, and the heat exchange tube is inserted into the installation through hole. Generally, welding or brazing is used. The heat exchange tube is connected to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/002B23K3/00B23K3/08B23K101/14
CPCB23K1/002B23K1/0008B23K3/00B23K3/08B23K2101/14
Inventor 李军温树文张书彦张鹏姚宾叶
Owner CENT OF EXCELLENCE FOR ADVANCED MATERIALS
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