CN101368800A - Axial fin flat pipe heat exchanger and manufacturing method thereof - Google Patents
Axial fin flat pipe heat exchanger and manufacturing method thereof Download PDFInfo
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- CN101368800A CN101368800A CNA2008102003583A CN200810200358A CN101368800A CN 101368800 A CN101368800 A CN 101368800A CN A2008102003583 A CNA2008102003583 A CN A2008102003583A CN 200810200358 A CN200810200358 A CN 200810200358A CN 101368800 A CN101368800 A CN 101368800A
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- pipe heat
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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
The invention belongs to field of heat exchangers, particularly relate to a kind of flat pipe heat exchanger and manufacture method thereof.
Background technology
In industries such as oil, chemical industry and the energy, at the technical field that reclaims high temperature corrosion dusty gas energy, the heat exchanger that uses is mainly based on shell-and-tube heat exchanger both at home and abroad.Though the shell-and-tube heat exchanger technology is comparatively ripe, also has some problems.
Move in high temperature, high pressure, corrosive medium complex environment, the corrosion failure of heat exchanger is very serious.Both at home and abroad for improving the antiseptic property of heat exchanger, generally all be to adopt two kinds of approach at present, one is for adopting more corrosion resistant senior alloy material; It two is that carbon steel material or equipment are carried out surfacecti proteon, carries out the organic coating protection as the heat exchanging device, protects with the chemical ni-p plating method, also has ways such as carbon steel material being carried out making after aluminising is protected again heat exchanger.These two kinds of approach all come with some shortcomings or defective, and it is excessive to improve material quality method one-time investment, and applied environment has certain limitation; Coating, coating, infiltration layer plating leakage are serious, and adhesive force is low, easily aging defective such as peel off, and decay resistance does not have obvious raising; Can not integral body carry out coating for Heavy Weight, big, the baroque equipment of surface area.At present to use more in selection be stainless steel, pure nickel to heat exchanger, or even the titanium material, and the stainless steel heat transfer efficiency is low, though pure nickel, titanium can overcome above defective, it costs an arm and a leg, and must make the cost of manufacture raising of heat exchanger.
Its structure of traditional heat exchangers comprises heat exchanger tube and fin.Its processing technology is generally heat exchanger tube and puts the aluminium fin, heat exchanger tube expand then so that fin fixedly forms, the welding of employing or riveting process are also arranged with fin and heat exchanger tube combination, this technology mode, there is the extra thermal resistance that combines between fin and the heat exchanger tube, and integral rigidity is poor, the conductivity of heat performance is bad, has influenced the raising of heat exchanger Energy Efficiency Ratio; For increasing heat exchange area, developed ripple and calking fin successively, but laying dust fouling easily on complex process and the fin.
In welding sequence, all be to adopt vacuum brazing, workpiece is in the vacuum, and mainly by heat radiation, production efficiency is lower.
Summary of the invention
Technical problem to be solved by this invention provides a kind of axial fin flat pipe heat exchanger and manufacture method thereof, to solve the low defective of production efficiency in the prior art.
A kind of axial fin flat pipe heat exchanger is welded by flat tube (1) and one group of rectangular fin (2), and flat tube (1) is the runway shape of straight line in the middle of two circular arc, and fin (2) distributes around flat tube (1) straight section and along the parallel longitudinal of heat exchanger.
The material of described flat tube (1) is the steel aluminium composite material, and the water side is the steel material, and the gas side is an aluminum cladding.
A kind of manufacture method of axial fin flat pipe heat exchanger may further comprise the steps:
7) make flat tube (1) and fin (2);
8) surface of cleaning flat tube (1) and fin (2) is removed oxide, the dust in the marmite and is hindered wetting and mobile dirt, and the coated with aluminum powder solder
9) simmering and bending steel plate argon arc method for brazing welding flat tube (1) and fin (2) are adopted in welding;
10) clean the brazing flux residue;
11) adopt nitric acid or hydrofluoric acid is washed, nitric acid, potassium bichromate passivation are removed the oxide on surface, will clean out for weld seam and both sides welding slag thereof, splash; Use gasoline and remove dirts such as oil stain, the aqueous slkali of then using 3-5% when greasy dirt is serious is oil removal, and rinses well with water purification.
12) housing is made, and tube sheet connects and sealing, and the overall package debugging is finished.
Scolder in the described step 2 is the aluminium powder scolder.
Cleaning brazing flux residue in the described step 4 is for to clean with warm water.
Beneficial effect
The present invention utilize longitudinal fin make high temperature corrosion gas along flat tube axial direction and fin in the same way direction flow, reduced flue gas resistance, increase the section circulation area, be difficult for ash deposit and slag buildup, easy to maintenance, and augmentation of heat transfer, improve heat exchange efficiency.Use simmering and bending steel plate argon arc method for brazing that welding quality is had clear improvement, weld defect significantly reduces, and weld strength strengthens, and production efficiency significantly improves; Adopt steel-aluminum composite plate material flat tube, not only improved corrosion resistance, avoided using the material of high price simultaneously, reduced cost.
Description of drawings
Fig. 1 is an axial fin flat pipe heat exchanger manufacture craft flow chart;
Fig. 2 is a longitudinal fin flat tube heat exchange element structural representation;
Fig. 3 is a longitudinal fin flat tube heat exchange element transverse cross-sectional view.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
A kind of axial fin flat pipe heat exchanger is welded by flat tube 1 and one group of rectangular fin 2, and flat tube 1 is the runway shape of straight line in the middle of two circular arc, and fin 2 distributes around flat tube 1 straight section and along the parallel longitudinal of heat exchanger; The material of described flat tube is the steel aluminium composite material, and the water side is the steel material, and the gas side is an aluminum cladding.
A kind of manufacture method of axial fin flat pipe heat exchanger may further comprise the steps:
13) make flat tube 1 and fin 2, make the longitudinal fin assembly, guarantee finned length, spacing, highly, coupling that sheet is thick, adopt means such as soldering, cooperate the frock clamp one-shot forming, make flat tube sheet material, through technologies such as bending, flattening, welding, make flat tube, and flat tube is carried out leak test, pressure testing, guarantee to wash away at high temperature, at a high speed and bear certain pressure down;
14) use mechanical means, chemical etching or electrochemical etching method to clean the surface of flat tube 1 and fin 2, remove oxide, the dust in the marmite and hinder wetting and mobile dirt, and coated with solder;
15) simmering and bending steel plate argon arc method for brazing welding flat tube 1 and fin 2 are adopted in welding;
16) clean the brazing flux residue with warm water;
17) use the metal cleaning agent to remove the oxide and the oily material on weldment surface;
18) after weldment is come out of the stove, carry out experiments such as pressure testing, leak test, check rate of deposition, and make housing, connect and the tube sheet sealing, the overall package debugging is finished.
Claims (5)
1. axial fin flat pipe heat exchanger is characterized in that: be welded by flat tube (1) and one group of rectangular fin (2), flat tube (1) is the runway shape of straight line in the middle of the circular arc of two, and fin (2) distributes around flat tube (1) straight section and along the parallel longitudinal of heat exchanger.
2. axial fin flat pipe heat exchanger as claimed in claim 1 is characterized in that: the material of described flat tube (1) is the steel aluminium composite material, and the water side is the steel material, and the gas side is an aluminum cladding.
3. the manufacture method of an axial fin flat pipe heat exchanger is characterized in that: may further comprise the steps
1) makes flat tube (1) and fin (2);
2) surface of cleaning flat tube (1) and fin (2) is removed oxide, the dust in the marmite and is hindered wetting and mobile dirt, and the coated with aluminum powder solder
3) simmering and bending steel plate argon arc method for brazing welding flat tube (1) and fin (2) are adopted in welding;
4) clean the brazing flux residue;
5) adopt nitric acid or hydrofluoric acid is washed, nitric acid, potassium bichromate passivation are removed the oxide on surface, will clean out for weld seam and both sides welding slag thereof, splash; Use gasoline and remove dirts such as oil stain, the aqueous slkali of then using 3-5% when greasy dirt is serious is oil removal, and rinses well with water purification.
6) housing is made, and tube sheet connects and sealing, and the overall package debugging is finished.
4. the manufacture method of axial fin flat pipe heat exchanger as claimed in claim 3, it is characterized in that: the scolder in the described step 2 is the aluminium powder scolder.
5. the manufacture method of axial fin flat pipe heat exchanger as claimed in claim 3, it is characterized in that: the cleaning brazing flux residue in the described step 4 is for to clean with warm water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102003583A CN101368800A (en) | 2008-09-24 | 2008-09-24 | Axial fin flat pipe heat exchanger and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102003583A CN101368800A (en) | 2008-09-24 | 2008-09-24 | Axial fin flat pipe heat exchanger and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101368800A true CN101368800A (en) | 2009-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008102003583A Pending CN101368800A (en) | 2008-09-24 | 2008-09-24 | Axial fin flat pipe heat exchanger and manufacturing method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862876A (en) * | 2010-06-29 | 2010-10-20 | 浙江金宸三普换热器有限公司 | Buffer type lashing bar for heat exchanger during brazing |
| CN102350623A (en) * | 2011-08-31 | 2012-02-15 | 金龙精密铜管集团股份有限公司 | Manufacturing method for aluminum alloy heat exchanger |
| CN102360743A (en) * | 2011-06-08 | 2012-02-22 | 上海东润换热设备制造有限公司 | Plate-fin heat exchanger of transformer and manufacturing method for plate-fin heat exchanger |
| CN103721965A (en) * | 2013-11-25 | 2014-04-16 | 青岛盛嘉信息科技有限公司 | Treatment process of aluminium alloy after brazing |
| CN104493449A (en) * | 2014-11-26 | 2015-04-08 | 浙江康盛热交换器有限公司 | Air cooling refrigerator and freezer serpentine parallel flow condenser manufacture process |
| CN106239077A (en) * | 2016-08-16 | 2016-12-21 | 安徽天祥空调科技有限公司 | A kind of air-conditioning heat exchanger heat exchange fin and preparation method thereof |
| CN106271488A (en) * | 2016-08-31 | 2017-01-04 | 贵州永红航空机械有限责任公司 | A kind of processing method of titanium alloy shell and tube combustion oil cooler |
| WO2018054319A1 (en) * | 2016-09-22 | 2018-03-29 | 杭州三花微通道换热器有限公司 | Heat exchanger core and heat exchanger having same |
| CN110686549A (en) * | 2019-11-05 | 2020-01-14 | 张科华 | Multi-runner rectangular fin flat tube and heat exchanger |
-
2008
- 2008-09-24 CN CNA2008102003583A patent/CN101368800A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862876A (en) * | 2010-06-29 | 2010-10-20 | 浙江金宸三普换热器有限公司 | Buffer type lashing bar for heat exchanger during brazing |
| CN102360743A (en) * | 2011-06-08 | 2012-02-22 | 上海东润换热设备制造有限公司 | Plate-fin heat exchanger of transformer and manufacturing method for plate-fin heat exchanger |
| CN102350623A (en) * | 2011-08-31 | 2012-02-15 | 金龙精密铜管集团股份有限公司 | Manufacturing method for aluminum alloy heat exchanger |
| CN103721965A (en) * | 2013-11-25 | 2014-04-16 | 青岛盛嘉信息科技有限公司 | Treatment process of aluminium alloy after brazing |
| CN104493449A (en) * | 2014-11-26 | 2015-04-08 | 浙江康盛热交换器有限公司 | Air cooling refrigerator and freezer serpentine parallel flow condenser manufacture process |
| CN106239077A (en) * | 2016-08-16 | 2016-12-21 | 安徽天祥空调科技有限公司 | A kind of air-conditioning heat exchanger heat exchange fin and preparation method thereof |
| CN106271488A (en) * | 2016-08-31 | 2017-01-04 | 贵州永红航空机械有限责任公司 | A kind of processing method of titanium alloy shell and tube combustion oil cooler |
| WO2018054319A1 (en) * | 2016-09-22 | 2018-03-29 | 杭州三花微通道换热器有限公司 | Heat exchanger core and heat exchanger having same |
| CN110686549A (en) * | 2019-11-05 | 2020-01-14 | 张科华 | Multi-runner rectangular fin flat tube and heat exchanger |
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Open date: 20090218 |