Large-scale plate-fin heat exchanger core body high-temperature brazing and flexible bundling device and method

A technology of plate-fin heat exchangers and strapping devices, which can be used in auxiliary devices, welding equipment, metal processing equipment, etc., and can solve problems such as fixture deformation and pre-tightening force relaxation

Inactive Publication Date: 2021-06-04
NANJING TECH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a high-temperature brazing method for large-scale plate-fin heat exchanger cores in order to solve the problems of pre-tightening force relaxation and fixture deformation during high-temperature brazing of large-scale plate-fin heat exchanger cores. Flexible strapping device and method thereof

Method used

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  • Large-scale plate-fin heat exchanger core body high-temperature brazing and flexible bundling device and method
  • Large-scale plate-fin heat exchanger core body high-temperature brazing and flexible bundling device and method
  • Large-scale plate-fin heat exchanger core body high-temperature brazing and flexible bundling device and method

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Embodiment Construction

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] Refer Figure 1 to 5 As shown, the large-plate fin heat exchanger core of the present embodiment is a high-temperature brazing flexible strapping device including the upper splint 1, the lower pinch plate 2, the brazing unit 3, the compensation block 4, and the steel strip 5, which are combined. Removable structure.

[0033] Among them, regarding the brazing unit 3: Spread the heat exchanger core into a plurality of brazing units 3 according to the size of the heat exchanger core to be brazed, and the plurality of brazing units 3 after brazing are welded or The manual argon arc welding is welded into the core to meet the assembly requirements of different sizes of heat exchanger core.

[0034] A pre-assembled brazing unit 3 is placed between the upper splints 1 and the lower splint 2, and the three form a sandwich structure, the sandwich struct...

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Abstract

The invention discloses a large-scale plate-fin heat exchanger core body high-temperature brazing and flexible bundling device and a method. The device comprises an upper clamping plate, a lower clamping plate, a steel belt and a compensation pressing block. During brazing, a core body is split into a plurality of units according to the size of the required heat exchanger core body, the heat exchanger units are fixed in a steel belt bundling mode, uniform flexible pressure is applied, and the plurality of groups of heat exchanger units after brazing are formed through welding and splicing. According to the large-scale plate-fin heat exchanger core body high-temperature brazing and flexible bundling device and the method, flexible bundling and combined welding are combined, it is ensured that the device provides uniform flexible pressure for each unit in the brazing process, so that large-scale high-temperature brazing has higher reliability and wide application prospects.

Description

Technical field [0001] The present invention belongs to the field of welding technology, and more particularly to a large plate fin heat exchanger core high-temperature vacuum brazing combined flexible strapping device and method thereof. Background technique [0002] The plate fin heat exchangers are one of the heat exchanger, which has high heat exchange efficiency, compact structure, small size, light weight, and wide application in the fields of aerospace, petrochemical and construction machinery. The production process of the core fin heat exchanger core is complex, high technical requirements, and the assembly process before brazing is a very important link. Due to the special laminate of the heat exchanger core, the assembly before the core brazing before domestic and foreign exchangers is hand-assembled, and its assembly quality has a vital impact on subsequent vacuum brazing. [0003] The clamp used during the manufacturing process of the past plate fin refrigerator is g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K3/00B23K3/08
CPCB23K3/00B23K3/08B23K3/087
Inventor 凌祥王一川许海
Owner NANJING TECH UNIV
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