CN105499430A - Processing method of inner finned tube of boiler - Google Patents
Processing method of inner finned tube of boiler Download PDFInfo
- Publication number
- CN105499430A CN105499430A CN201510892483.5A CN201510892483A CN105499430A CN 105499430 A CN105499430 A CN 105499430A CN 201510892483 A CN201510892483 A CN 201510892483A CN 105499430 A CN105499430 A CN 105499430A
- Authority
- CN
- China
- Prior art keywords
- stock
- aluminum fin
- steel pipe
- aluminum
- finned tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a processing method of an inner finned tube, and belongs to the technical field of heat-exchange equipment. The processing method comprises the following steps: (1) manufacturing aluminum fins; (2) processing the surfaces of the aluminum fins; (3) aligning the two semicolumnar aluminum fins and grooves to form a round; (4) conducting internal derusting and sand blasting processing; (5) enabling a cylindrical steel pipe to be in complete contact with the aluminum fins in the cylindrical steel pipe and be compressed and shrunk through the compression of a spinning machine; and (6) after the processing is completed, checking the processed inner finned tubes. According to the method, provided by the invention, the thermal resistance between the aluminum fins and the external steel pipe is smaller, and the synthetized aluminum finned tubes are higher in heat exchange performance.
Description
Technical field
The present invention relates to a kind of processing method of internally finned tube, particularly a kind of processing method of boiler internally finned tube, belongs to technical field of heat exchange equipment.
Background technology
Boiler all occupies very important status in the industries such as oil, chemical industry, medicine, metallurgy, electric power, food, along with the industrial development of China, to the utilization of the energy, exploitation and the requirement of saving improve constantly, the industrial energy-conservation important component part becoming the enterprise development matter of fundamental importance, therefore also strengthens day by day to the demand of efficient boiler.How designing heat exchange efficiency high, the efficient boiler that flow resistance is little, is the main target that research and development person pursue.Interior finned tube boiler is the effective form improving boiler heat exchange efficiency, and boiler internally finned tube take water as cooling medium, horizontally plunders outside internally finned tube, makes the high-temperature gas in pipe obtain the heat transmission equipment cooled.In the aluminium finned tube of existing use, in order to increase rate of heat exchange, the pressure of burner can be utilized under normal circumstances to strengthen the mobility of air, if can improve heat exchange efficiency from the design and manufacture of aluminium finned tube will be conducive to the lifting of boiler service efficiency quality, the thermal resistance in existing processing method between inner fin and outer tube is one of factor affecting heat transfer efficiency.
Summary of the invention
Object of the present invention is for providing a kind of processing method of boiler internally finned tube.
For realizing object of the present invention, have employed following technical scheme: a kind of processing method of boiler internally finned tube, comprises the following steps:
(1) making of aluminum fin-stock, aluminum fin-stock adopts one-time cast-forming or extruded, and described aluminum fin-stock is semicolumn pectinate texture;
(2) aluminum fin-stock surface is processed, remove burr, and clear up cutting object and the burr of fin, polish smooth, guarantee the surface cleaning of aluminum fin-stock, cut according to the requirement length of design drawing, 45 degree of grooves are cut in aluminum fin-stock one end, make two semicolumn aluminum fin-stock combine formation 90 degree of grooves;
(3) by two semicolumn aluminum fin-stock alignment, groove aligns, and forms a circle;
(4) according to drawing requirement by steel pipe in sawing machine blanking, and deburr, then steel pipe is delivered in sand blasting room and is carried out inner circle rust cleaning blasting treatment;
(5) tubing spinning machine is debugged, change the mould of processing aluminum finned tube, adjustment tubing spinning machine cylinder pressure, the concentricity of adjustment mould, make its feed mechanism point-blank, complete the test of tubing spinning machine, the steel pipe assembled is put on tubing spinning machine stock shelf, by the compression of machine, outer round steel pipe is fully contacted with the aluminum fin-stock in it, compression, the draw;
(6), after machining, the internally finned tube of processing is checked.
Positive Advantageous Effects of the present invention is: under the more existing aluminum fin-stock equal conditions of aluminum finned tube that method of the present invention makes, pipe heat exchange efficiency exceeds more than 5 percentage points, effectively can improve the heat exchange efficiency of boiler, under equal heat exchange index, more existing boiler volume is less, materials are less, method provided by the invention makes the thermal resistance between aluminum fin-stock and outer pipe less, and the aluminium finned tube of synthesis has good heat exchange property.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the comb of aluminum fin-stock of the present invention.
Fig. 2 is the schematic diagram of aluminium finned tube end.
Schematic diagram when Fig. 3 is the draw of the present invention.
Detailed description of the invention
In order to explain enforcement of the present invention more fully, provide embodiment of the present invention, these embodiments are only to elaboration of the present invention, do not limit the scope of the invention.
Elaboration detailed further to invention by reference to the accompanying drawings, is respectively labeled as in accompanying drawing: 1: outer round steel pipe; 5: comb; 6: aliform; 7: roll; 8 rolled pieces, 9:45 degree groove.As shown in drawings, a kind of processing method of boiler internally finned tube, comprises the following steps:
(1) making of aluminum fin-stock, aluminum fin-stock adopts one-time cast-forming or extruded, and described aluminum fin-stock is semicolumn pectinate texture;
(2) aluminum fin-stock surface is processed, remove burr, and clear up cutting object and the burr of fin, polish smooth, guarantee the surface cleaning of aluminum fin-stock, cut according to the requirement length of design drawing, 45 degree of grooves are cut in aluminum fin-stock one end, make two semicolumn aluminum fin-stock combine formation 90 degree of grooves;
(3) by two semicolumn aluminum fin-stock alignment, groove aligns, and forms a circle;
(4) according to drawing requirement by steel pipe in sawing machine blanking, and deburr, then steel pipe is delivered in sand blasting room and is carried out inner circle rust cleaning blasting treatment;
(5) tubing spinning machine is debugged, change the mould of processing aluminum finned tube, adjustment tubing spinning machine cylinder pressure, the concentricity of adjustment mould, make its feed mechanism point-blank, complete the test of tubing spinning machine, the steel pipe assembled is put on tubing spinning machine stock shelf, by the compression of machine, outer round steel pipe is fully contacted with the aluminum fin-stock in it, compression, the draw;
(6), after machining, the internally finned tube of processing is checked.
(1) making of aluminum fin-stock, aluminum fin-stock adopts one-time cast-forming, and described aluminum fin-stock is semicolumn pectinate texture, and comb is also provided with little fin;
(2) aluminum fin-stock surface is processed, remove burr, and clear up cutting object and the burr of fin, polish smooth, guarantee the surface cleaning of aluminum fin-stock, cut according to the requirement length of design drawing, 45 degree of grooves will be cut in aluminum fin-stock one end, make two semicolumn aluminum fin-stock combine formation 90 degree of grooves;
(3) by two semicolumn aluminum fin-stock alignment, groove aligns, and forms a circle;
(4) in the middle of two aluminum fin-stock combined, install the aluminium sheet of the thick 5mm of equal length additional;
(5) according to drawing requirement by steel pipe in sawing machine blanking, and deburr, then steel pipe is delivered in sand blasting room and is carried out inner circle rust cleaning blasting treatment;
(6) assemble two aluminum fin-stock and aluminium sheet are inserted together be installed in steel pipe;
(7) tubing spinning machine is debugged, change the mould of processing aluminum finned tube, adjustment tubing spinning machine cylinder pressure, the concentricity of adjustment mould, make its feed mechanism point-blank, complete the test of tubing spinning machine, the steel pipe assembled is put on tubing spinning machine stock shelf, by the compression of machine, outer round steel pipe is fully contacted with the aluminum fin-stock in it, compression, the draw;
(8), after machining, the internally finned tube of processing is checked;
The present invention's aluminum molding insert inserted in steel pipe is provided with the rib of pectination arrangement, extend to flue gas center, high-temperature flue gas is divided into flue gas thin layer, efficiently reduce the thermograde from mainstream smoke to wall, continuously destroy the flow boundary layer at wall and flue gas center, enhance heat convection, significantly weaken the obstruction of incoagulable gas layer to steam condensation heat transfer simultaneously, condensation need not can be there is on pectination fin in the steam in mainstream smoke through thicker incoagulable gas layer, effectively expand condensation heat transfer area, the flat profiled member of aluminum of inserting between the top of simultaneously pectination rib destroys middle high-temperature area, flue gas is made to produce flow-disturbing, destroy the Temperature Distribution pattern progressively reduced to wall main flow temperature from sectional axis that flue gas circulating face exists completely, efficiently reduce the thermograde from mainstream smoke to wall, rectilinear not contour fin can tear condensate film effectively simultaneously, enhance the cooling energy recovery of steam in flue gas, under the return water temperature condition of floor heating 30 DEG C, the low heat value efficiency of full premix hot-water boiler can reach more than 106%, substantially increase the thermal efficiency of boiler, simultaneously, condensation water absorbs the part CO2 in flue gas, NOx, the pernicious gases such as SOx, effectively reduce pollutant emission.
After detailed description embodiments of the present invention, the personage being familiar with this technology can be well understood to, do not departing under above-mentioned claim and spirit and can carry out various change and amendment, all above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all belong to the scope of technical solution of the present invention, and the present invention is not also limited to the embodiment of example in description.
Claims (1)
1. a processing method for boiler internally finned tube, is characterized in that comprising the following steps:
(1) making of aluminum fin-stock, aluminum fin-stock adopts one-time cast-forming or extruded, and described aluminum fin-stock is semicolumn pectinate texture;
(2) aluminum fin-stock surface is processed, remove burr, and clear up cutting object and the burr of fin, polish smooth, guarantee the surface cleaning of aluminum fin-stock, cut according to the requirement length of design drawing, 45 degree of grooves are cut in aluminum fin-stock one end, make two semicolumn aluminum fin-stock combine formation 90 degree of grooves;
(3) by two semicolumn aluminum fin-stock alignment, groove aligns, and forms a circle;
(4) according to drawing requirement by steel pipe in sawing machine blanking, and deburr, then steel pipe is delivered in sand blasting room and is carried out inner circle rust cleaning blasting treatment;
(5) tubing spinning machine is debugged, change the mould of processing aluminum finned tube, adjustment tubing spinning machine cylinder pressure, the concentricity of adjustment mould, make its feed mechanism point-blank, complete the test of tubing spinning machine, the steel pipe assembled is put on tubing spinning machine stock shelf, by the compression of machine, outer round steel pipe is fully contacted with the aluminum fin-stock in it, compression, the draw;
(6), after machining, the internally finned tube of processing is checked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510892483.5A CN105499430A (en) | 2015-12-08 | 2015-12-08 | Processing method of inner finned tube of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510892483.5A CN105499430A (en) | 2015-12-08 | 2015-12-08 | Processing method of inner finned tube of boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105499430A true CN105499430A (en) | 2016-04-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510892483.5A Pending CN105499430A (en) | 2015-12-08 | 2015-12-08 | Processing method of inner finned tube of boiler |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6070657A (en) * | 1994-03-24 | 2000-06-06 | Hoval Interliz Ag | Heat exchanger tube for heating boilers |
| CN2614340Y (en) * | 2003-04-09 | 2004-05-05 | 张慧君 | A heat exchange finned tube |
| EP1457751A1 (en) * | 2003-03-13 | 2004-09-15 | Lg Electronics Inc. | Heat exchanger and fabrication method thereof |
| CN102581583A (en) * | 2011-01-14 | 2012-07-18 | 浙江宏天铜业有限公司 | Copper heat tube with high-tooth fins and production technology of copper heat tube |
| CN202522118U (en) * | 2012-03-16 | 2012-11-07 | 广东美的制冷设备有限公司 | Aluminum pipe finned heat exchanger and production mold for same |
| CN103003655A (en) * | 2010-07-13 | 2013-03-27 | 古河Sky株式会社 | Internally grooved aluminum alloy heat transfer pipe |
| CN103447364A (en) * | 2013-09-11 | 2013-12-18 | 宁波婷微电子科技有限公司 | Manufacturing technology of car-carried refrigerator heat exchange tube |
| CN103477178A (en) * | 2011-11-14 | 2013-12-25 | 崔诚桓 | Heat exchange pipe and manufacturing method thereof |
-
2015
- 2015-12-08 CN CN201510892483.5A patent/CN105499430A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6070657A (en) * | 1994-03-24 | 2000-06-06 | Hoval Interliz Ag | Heat exchanger tube for heating boilers |
| EP1457751A1 (en) * | 2003-03-13 | 2004-09-15 | Lg Electronics Inc. | Heat exchanger and fabrication method thereof |
| CN2614340Y (en) * | 2003-04-09 | 2004-05-05 | 张慧君 | A heat exchange finned tube |
| CN103003655A (en) * | 2010-07-13 | 2013-03-27 | 古河Sky株式会社 | Internally grooved aluminum alloy heat transfer pipe |
| CN102581583A (en) * | 2011-01-14 | 2012-07-18 | 浙江宏天铜业有限公司 | Copper heat tube with high-tooth fins and production technology of copper heat tube |
| CN103477178A (en) * | 2011-11-14 | 2013-12-25 | 崔诚桓 | Heat exchange pipe and manufacturing method thereof |
| CN202522118U (en) * | 2012-03-16 | 2012-11-07 | 广东美的制冷设备有限公司 | Aluminum pipe finned heat exchanger and production mold for same |
| CN103447364A (en) * | 2013-09-11 | 2013-12-18 | 宁波婷微电子科技有限公司 | Manufacturing technology of car-carried refrigerator heat exchange tube |
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Application publication date: 20160420 |
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