CN102152072A - Method for machining porous-surface heat-exchange pipe for boiling heat-transfer equipment - Google Patents
Method for machining porous-surface heat-exchange pipe for boiling heat-transfer equipment Download PDFInfo
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- CN102152072A CN102152072A CN 201110045526 CN201110045526A CN102152072A CN 102152072 A CN102152072 A CN 102152072A CN 201110045526 CN201110045526 CN 201110045526 CN 201110045526 A CN201110045526 A CN 201110045526A CN 102152072 A CN102152072 A CN 102152072A
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Abstract
The invention discloses a method for machining a porous-surface heat-exchange pipe for boiling heat-transfer equipment, aiming at providing a heat-exchange pipe and a machining method with the advantages of simple process, convenience for machining, no falling of a machined porous surface and capability of machining various complex structural forms. The method comprises the steps of: cutting an aluminum alloy sheet according to developed dimensions of a base pipe and a porous layer of a heat-exchange pipe respectively to obtain aluminum alloy sheets which are respectively used for machining the base pipe and the porous layer and have the same dimensions as the developed dimensions of the base pipe and the porous layer of the heat-exchange pipe; respectively evening out; placing the evened-out aluminum alloy sheet for machining the porous layer in the middle of a terrace die and a hollowing die, and punching the aluminum alloy sheet for machining the porous layer by using the terrace die and the hollowing die; superposing and thermally pressing a porous layer substrate and the evened-out aluminum alloy sheet for machining the base pipe so that the porous layer substrate and the evened-out aluminum alloy sheet for machining the base pipe are integrated; and then, machining the evened-out aluminum alloy sheet for machining the base pipe into a pipe shape, and welding both the machined aluminum alloy sheets to obtain the aluminum alloy heat-exchange pipe with the porous surface.
Description
Technical field
The present invention relates to a kind of processing method of the porous surface aluminium alloy heat exchange tube that is used for boiling heat transfer equipment and the heat exchanger tube that is processed into thereof.
Background technology
At present, the most of boiling heat transfer equipment in the refrigeration system still adopt the shell-tube type structure, and heat-transfer pipe is the critical piece of shell and tube exchanger, improve the performance of heat-transfer pipe, improve the heat exchange effect of heat exchanger, save metal material, alleviating weight of equipment, is the research direction of heat transmission equipment.And for the heat conduction reinforced of phase transformation boiling heat transfer equipment being arranged, Boiling heat Transfer Enhancement on Porous Surfaces commonly used.
At present, the method for existing formation porous surface mainly adopts methods such as sintering, spraying, plating that another kind of metal dust is appended to the metal surface, complex technical process, and, owing to use another kind of metal dust to do coating, improved product cost.Simultaneously, in use metal coating comes off easily, influences the service life of equipment.And existing machining is to adopt rolling, the extrusion-processing technology of dedicated tool on special purpose machine tool, and processing mechanism is very complicated, and the shape and size in hole control difficulty is big, heat exchanger tube that can only the processing structure simple shape.
Summary of the invention
The present invention is in order to overcome weak point of the prior art, provide a kind of technology simple, easy to process, the porous surface after the processing does not come off, and can process the processing method of the porous surface heat exchanger tube that is used for boiling heat transfer equipment of various labyrinth shapes and the heat exchanger tube that is processed into thereof.
The present invention is achieved through the following technical solutions:
A kind of processing method that is used for the porous surface aluminium alloy heat exchange tube of boiling heat transfer equipment is characterized in that, comprises the steps:
(1) selects aluminum alloy plate materials according to the pipe thickness and the porous layer thickness of designed heat exchanger tube parent tube;
(2) aluminum alloy plate materials of selecting is cut according to the development size of heat exchanger tube parent tube and porous layer respectively, obtain the aluminum alloy plate materials that be used to identical with the porous layer development size with the heat exchanger tube parent tube processed the aluminum alloy plate materials of parent tube and be used to process porous layer;
(3) will be used to process the aluminum alloy plate materials of parent tube and being used to processes the aluminum alloy plate materials of porous layer and flattens respectively;
(4) aluminum alloy plate materials that being used to of will flattening afterwards processed porous layer is placed in the middle of punch and the die, uses punch and die that the aluminum alloy plate materials that is used to process porous layer is carried out punching, obtains the porous layer base material;
(5) with the porous layer base material with flatten after the aluminum alloy plate materials that is used to process parent tube overlaps to lie in and carries out hot pressing on the hot press, the aluminum alloy plate materials that makes being used to after porous layer base material and the pressing process parent tube becomes one; Hot pressing temperature is near the fusing point of aluminium alloy, and hot pressing pressure is less than the rock deformation pressure in hole on the porous layer base material;
The aluminum alloy plate materials that being used to after porous layer base material that (6) will become one and the pressing processed parent tube is processed into tubulose, afterwards axial slits is welded the aluminium alloy heat exchange tube that obtains porous surface.
A kind of heat exchanger tube is characterized in that, comprises parent tube and porous surface layer, and described parent tube is connected by hot pressing with the porous surface layer, and described parent tube and porous surface layer are aluminum alloy materials.
Described porous surface layer is positioned at the outside or inner of parent tube.
The present invention has following technique effect:
The processing method that is used for the porous surface aluminium alloy heat exchange tube of boiling heat transfer equipment of the present invention adopts the form processing of punching to form the porous surface layer, afterwards porous layer and the sheet material hot pressing that is used to process parent tube are become one, processing technology is simple, easy to process, and, thickness and porous nickel, the boiling heat transfer coefficient height.Simultaneously, porous layer is firm, does not come off, and has improved the service life of heat exchanger tube.The shape and size in hole are controlled easily, can not only process the heat exchanger tube of simple shape, also can be processed into various baroque heat exchanger tubes, have enlarged the scope of application that has the porous layer heat exchanger tube.
The heat exchanger tube that processes by method of the present invention is an aluminum alloy materials, and material is light, intensity is high, thermal conductivity is good, corrosion resistance is good, has alleviated weight of equipment, saves metal material, heat exchange effect that can the enhanced heat exchange device.
Description of drawings
Fig. 1 is the schematic diagram of heat exchanger tube of the present invention;
Fig. 2 is the cross section enlarged drawing of heat exchanger tube of the present invention;
Fig. 3 is the schematic diagram that is used to process the aluminum alloy plate materials punching of porous layer;
Fig. 4 is the schematic diagram of two-layer aluminium alloy plate hot pressing;
Fig. 5 rolls curved schematic diagram for two-layer aluminium alloy plate.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
A kind of processing method that is used for the porous surface aluminium alloy heat exchange tube of boiling heat transfer equipment comprises the steps:
(1) selects aluminum alloy plate materials according to the pipe thickness and the porous layer thickness of designed heat exchanger tube parent tube.The parent tube length of heat exchanger tube and the length of porous layer are determined according to the demand of the used heat transmission equipment heat exchange area of refrigeration system.
(2) aluminum alloy plate materials of selecting is cut according to the development size of heat exchanger tube parent tube and porous layer respectively, obtain the aluminum alloy plate materials that be used to identical with the porous layer development size with the heat exchanger tube parent tube processed the aluminum alloy plate materials of parent tube and be used to process porous layer.
(3) will be used to process the aluminum alloy plate materials of parent tube and being used to processes the aluminum alloy plate materials of porous layer and uses press to flatten respectively.
(4) afterwards as shown in Figure 3, the aluminum alloy plate materials 5 that being used to of flattening processed porous layer is placed in the middle of punch 3 and the die 4, uses punch and die that the aluminum alloy plate materials that is used to process porous layer is carried out punching, obtains porous layer base material 1.Punch and die can design according to the shape and the big or small needs in porous layer hole.
(5) as shown in Figure 4, with porous layer base material 1 with flatten after the aluminum alloy plate materials 6 that is used to process parent tube overlaps to lie in and carries out hot pressing on the hot press 7, the aluminum alloy plate materials that makes being used to after porous layer base material and the pressing process parent tube becomes one.Hot pressing temperature is near the fusing point of aluminium alloy, and hot pressing pressure is less than the rock deformation pressure in hole on the porous layer base material.
(6) as shown in Figure 5, the aluminum alloy plate materials 6 that being used to after porous layer base material 1 that will become one and the pressing processed parent tube uses bending roll machines to be bent into tubulose, if the heat exchanger tube of processing inner surface porous, a side of porous is in the inboard when bending, if be processed into the heat exchanger tube of porous outer surface, a side of porous is in the outside when bending.Afterwards axial slits is welded the aluminium alloy heat exchange tube that obtains porous surface.To carry out weld seam sealing and ruggedness test after the welding.Become parent tube 2 after being used to process aluminum alloy plate materials 6 welding of parent tube.
The porous layer that is processed into by said method at the schematic diagram of the heat exchanger tube of outer surface as depicted in figs. 1 and 2, comprise parent tube 2 and porous surface layer base material 1, described parent tube 2 and porous surface layer base material 1 are connected by hot pressing, and described parent tube and porous surface layer are aluminum alloy materials.Described porous surface layer base material 1 can be positioned at the outside of parent tube 2, also can be positioned at the inside of parent tube 2.
Claims (3)
1. a processing method that is used for the porous surface aluminium alloy heat exchange tube of boiling heat transfer equipment is characterized in that, comprises the steps:
(1) selects aluminum alloy plate materials according to the pipe thickness and the porous layer thickness of designed heat exchanger tube parent tube;
(2) aluminum alloy plate materials of selecting is cut according to the development size of heat exchanger tube parent tube and porous layer respectively, obtain the aluminum alloy plate materials that be used to identical with the porous layer development size with the heat exchanger tube parent tube processed the aluminum alloy plate materials of parent tube and be used to process porous layer;
(3) will be used to process the aluminum alloy plate materials of parent tube and being used to processes the aluminum alloy plate materials of porous layer and flattens respectively;
(4) aluminum alloy plate materials that being used to of will flattening afterwards processed porous layer is placed in the middle of punch and the die, uses punch and die that the aluminum alloy plate materials that is used to process porous layer is carried out punching, obtains the porous layer base material;
(5) with the porous layer base material with flatten after the aluminum alloy plate materials that is used to process parent tube overlaps to lie in and carries out hot pressing on the hot press, the aluminum alloy plate materials that makes being used to after porous layer base material and the pressing process parent tube becomes one;
The aluminum alloy plate materials that being used to after porous layer base material that (6) will become one and the pressing processed parent tube is processed into tubulose, afterwards axial slits is welded the aluminium alloy heat exchange tube that obtains porous surface.
2. a heat exchanger tube that uses the described processing method of claim 1 to obtain is characterized in that, comprises parent tube and porous surface layer, and described parent tube is connected by hot pressing with the porous surface layer, and described parent tube and porous surface layer are aluminum alloy materials.
3. heat exchanger tube according to claim 2 is characterized in that, described porous surface layer is positioned at the outside or inner of parent tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100455268A CN102152072B (en) | 2011-02-25 | 2011-02-25 | Method for machining porous-surface heat-exchange pipe for boiling heat-transfer equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100455268A CN102152072B (en) | 2011-02-25 | 2011-02-25 | Method for machining porous-surface heat-exchange pipe for boiling heat-transfer equipment |
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| Publication Number | Publication Date |
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| CN102152072A true CN102152072A (en) | 2011-08-17 |
| CN102152072B CN102152072B (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100455268A Expired - Fee Related CN102152072B (en) | 2011-02-25 | 2011-02-25 | Method for machining porous-surface heat-exchange pipe for boiling heat-transfer equipment |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02165832A (en) * | 1988-12-15 | 1990-06-26 | Calsonic Corp | Manufacture of tank for heat exchanger |
| CN1053119A (en) * | 1991-02-13 | 1991-07-17 | 天津大学 | Metal composite mesh on two surfaces intensify heat transfer pipe and heat transfer plate |
| CN2423559Y (en) * | 2000-06-07 | 2001-03-14 | 姜锡高 | Heat-transfer pipe |
| CN1407308A (en) * | 2001-08-06 | 2003-04-02 | 聚源株式会社 | Heat transfer component and its manufacture |
| CN1624412A (en) * | 2003-12-02 | 2005-06-08 | 日立电线株式会社 | Boiling heat-transfer tube and making method thereof |
| KR100634099B1 (en) * | 2005-10-10 | 2006-10-16 | 주식회사 두원공조 | Method processing the hole of header of heat exchanger |
-
2011
- 2011-02-25 CN CN2011100455268A patent/CN102152072B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02165832A (en) * | 1988-12-15 | 1990-06-26 | Calsonic Corp | Manufacture of tank for heat exchanger |
| CN1053119A (en) * | 1991-02-13 | 1991-07-17 | 天津大学 | Metal composite mesh on two surfaces intensify heat transfer pipe and heat transfer plate |
| CN2423559Y (en) * | 2000-06-07 | 2001-03-14 | 姜锡高 | Heat-transfer pipe |
| CN1407308A (en) * | 2001-08-06 | 2003-04-02 | 聚源株式会社 | Heat transfer component and its manufacture |
| CN1624412A (en) * | 2003-12-02 | 2005-06-08 | 日立电线株式会社 | Boiling heat-transfer tube and making method thereof |
| KR100634099B1 (en) * | 2005-10-10 | 2006-10-16 | 주식회사 두원공조 | Method processing the hole of header of heat exchanger |
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| CN102152072B (en) | 2012-11-07 |
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