Axial fin flat pipe heat exchanger and manufacturing method thereof

A manufacturing method and heat exchanger technology, which are applied to manufacturing tools, tubular elements, heat exchange equipment, etc., can solve problems such as low production efficiency, and achieve the effects of improving production efficiency, reducing costs, and improving corrosion resistance.

Inactive Publication Date: 2009-02-18
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a longitudinal finned flat tube heat exchanger and its manufacturing method to solve the defect of low production efficiency in the prior art

Method used

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  • Axial fin flat pipe heat exchanger and manufacturing method thereof
  • Axial fin flat pipe heat exchanger and manufacturing method thereof
  • Axial fin flat pipe heat exchanger and manufacturing method thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0025] A flat tube heat exchanger with longitudinal fins, which is welded by a flat tube 1 and a set of rectangular fins 2. Distributed in parallel along the longitudinal direction of the heat exchanger; the material of the flat tube is steel-aluminum composite material, the water side is made of steel, and the gas side is made of aluminum cladding.

[0026] A method of manufacturing a longitudinally finned flat tube heat exchanger, comprising the following steps:

[0027] 13) Manufacture flat tube 1 and fin 2, make longitudinal fin assembly, ensure the matching of fin length, spacing, height, sheet thickness, adopt brazing and other means, cooperate with tooling and fixture to form at one time, manufacture plate for flat tube, after bending , flattening, welding and other processes to make flat tubes, and conduct leak test and pressure test on the flat tubes to ensure that they can withstand certain pressure under high temperature and high speed washing;

[0028] 14) Clean t...

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PUM

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Abstract

The invention relates to a vertical finned flat tube heat exchanger, which is composed of a flat tube (1) and a group of rectangular fins (2) through welding; the flat tube (1) is shaped as a runway which is arc at both ends and straight in the middle; and the fins (2) are distributed in parallel around the straight edge of the flat tube (1) and along the vertical direction of the heat exchanger. The manufacturing method comprises the following steps: (1), producing the flat tube (1) and the fins (2); (2), cleaning the surfaces of the flat tube (1) and the fins (2), and then coating the solder; (3), welding; (4), cleaning the brazing agent residues; (5), removing the oxides and oily substances on the weldment surface; and (6), producing a shell body, collecting and sealing the tube plate, and completing the overall assembly debugging. The invention improves the heat exchange efficiency, reduces the flue gas resistance, increases the cross-section flow area and does not easily get ash deposited and scaled, which is easy in maintenance; besides, the production efficiency is significantly improved and the corrosion resistance is good so as to reduce the costs.

Description

technical field [0001] The invention belongs to the field of heat exchangers, in particular to a flat tube heat exchanger and a manufacturing method thereof. Background technique [0002] In the petroleum, chemical and energy industries, for the technical field of recovering high-temperature corrosive dust-laden gas energy, the heat exchangers used at home and abroad are mainly shell-and-tube heat exchangers. Although the shell and tube heat exchanger technology is relatively mature, there are still some problems. [0003] Operating in an environment with high temperature, high pressure, and complex corrosive media, the corrosion damage of the heat exchanger is very serious. At present, in order to improve the anti-corrosion performance of heat exchangers at home and abroad, two methods are generally adopted. One is to use more corrosion-resistant advanced alloy materials; the other is to protect the surface of carbon steel materials or equipment, such as heat exchangers. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F1/30B23P15/26B23K35/28
Inventor 茅文焯张奎沈志勇顾平道郭玉锦邱燃
Owner DONGHUA UNIV
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