CN108195218B - A kind of external curve finned tube and its manufacturing method - Google Patents

A kind of external curve finned tube and its manufacturing method Download PDF

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Publication number
CN108195218B
CN108195218B CN201711427856.7A CN201711427856A CN108195218B CN 108195218 B CN108195218 B CN 108195218B CN 201711427856 A CN201711427856 A CN 201711427856A CN 108195218 B CN108195218 B CN 108195218B
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level
fin
fin body
curved section
straightway
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CN108195218A (en
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李春花
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Jiangsu Zhongdi Energy Saving Technology Co., Ltd.
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Jiangsu Zhongdi Energy Saving Technology Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
    • F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/10—Secondary fins, e.g. projections or recesses on main fins

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The present invention provides a kind of external curve finned tube and its manufacturing methods, it includes tube body and the fin positioned at tube wall, the tube body is made of metal material, the fin uses aluminium or copper material, the fin includes level-one fin body and second level fin body, the second level fin body is arranged in the level-one fin body, multiple second level fin bodies are set in each level-one fin body, multiple second level fin bodies asymmetric arrangement in the level-one fin body, multiple fins are on tube wall perpendicular to arrangement annular in shape on the direction of pipe axis, constitute multiple annulus fins sets, distance values in the multiple annulus fins set between adjacent annulus fins set are become larger in the direction along pipe axis by small, in equal-difference arrangement.

Description

A kind of external curve finned tube and its manufacturing method
Technical field
The present invention relates to a kind of heat exchanger tube, especially a kind of external curve finned tube and its manufacturing method.
Background technique
Finned tube is a kind of heat exchange element.Be in order to improve heat exchange efficiency, usually on the surface of heat exchanger tube by adding fin, Increase the external surface area (or internal surface area) of heat exchanger tube, to achieve the purpose that improve heat exchange efficiency, such a heat exchanger tube.
The type of fin is varied, wherein classifying by fin shape, finned tube can the side of being divided into finned tube (Square Finned tube), Round fin pipe, spiral fin coil (spiral finned tube), longitudinal fin (Longitudinal Finned Tube), corrugated fins pipe, spiral saw dentation finned tube (Helical Serrated Finned Tubes), needle Shape finned tube, whole plate finned tube (plate wing), internally finned tube (inner finned tube) etc..
However, the heat exchange efficiency of the finned tube of numerous fin types comprehensive can not still meet the needs of heat exchange, And above-mentioned each fin all there is a problem of such or such in production, can not meet the needs of simple process, because This makes it can satisfy the requirement of production technology, Xie Fangsheng while improving heat exchange efficiency there is an urgent need for a kind of finned tube is provided Force of labor, to meet the needs of production.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies propose a kind of heat exchange efficiency significantly improve, flow-disturbing effect it is bright It is aobvious, and structural strength is high, meets the external curve finned tube and its manufacturing method of manufacturing technique requirent.
In order to solve the above-mentioned technical problems, the present invention provides a kind of external curve finned tubes comprising tube body and is located at The fin of tube wall, the tube body are made of metal material, and the fin uses aluminium or copper material, which is characterized in that institute Stating fin includes level-one fin body and second level fin body, and the second level fin body is arranged in the level-one fin body, each Multiple second level fin bodies are set in level-one fin body, and multiple second level fin bodies asymmetric arrangement in the level-one fin body is more A fin, perpendicular to arrangement annular in shape on the direction of pipe axis, constitutes multiple annulus fins sets, institute on tube wall The distance values stated between annulus fins set adjacent in multiple annulus fins sets are become larger in the direction along pipe axis by small, In equal-difference arrangement；
The level-one fin body includes straightway and curved section, and the straightway is in contact with the tube wall and is in incline Tiltedly arrangement, the angle between tube wall is between 25-35 °, and the curved section is connected with the end of the straightway, institute It states curved section and meets following first equation:
Wherein x, y are the coordinate values at any point on the curved section, and the reference axis A of the equation is based on straightway Midpoint is the center of circle, extends to X-axis to the direction far from tube body along straightway, and straightway upper and lower ends are the reference axis of Y-axis, Middle a > 0, b > 0；
The second level fin body is arranged on the curved section of the level-one fin body, and the second level fin body meets following the Two equations:
y1=a1x1 2； (2)
Wherein x1, y1For the coordinate value at any point in the second level fin body, the reference axis B of the equation is with second level fin body Intersection point with the curved section is origin, is X with the tangent direction of the curved section1Axis, the above are Y for tangent line1The reference axis of axis, x1 For using second level fin body and curved section junction as origin, tangentially distance of the extending direction apart from the origin, y1It should for distance The height value of tangent line, a1For coefficient, value range 0.2-0.3.
Preferably, there are two second level fin bodies for setting in the level-one fin body.
Preferably, the spacing in the multiple annulus fins set between adjacent rings fins set etc. differences be 0.3cm.
The present invention also provides a kind of manufacturing methods of external spiral curve finned tube, include the following steps:
S1, selection copper alloy plate are pre-processed as raw material, and to copper alloy plate, and the pretreatment includes to described Copper alloy plate surface is derusted, and the derusting is completed in such a way that chemical reagent is reacted with the oxide of copper, the pre- place Reason further includes that the copper alloy plate surface is heat-treated and is rolled；
S2, the straightway that the level-one fin body is processed in numerically-controlled machine tool, the size of the straightway are predetermined size, The curved section of the level-one fin body is processed in numerically-controlled machine tool, which meets first equation, adds in numerically-controlled machine tool Second level fin body described in work, the second level fin body meet the second equation；
S3, when above-mentioned part after processing is completed, with abrasive machine remove feeders, overlap, attachment, piece surface is handled into light It is sliding；
S4, the detection that physical property, dimensional accuracy, straightness, surface smoothness are carried out to above-mentioned part, if above-mentioned parameter The requirement of not up to predetermined processing technology, then reject the part；
S5, the straightway that the curved section of the level-one fin body is soldered to the level-one fin body, by the second level wing Sheet body is welded on the curved section of the level-one fin body, and specific welding procedure processes welding groove to be first on part, and right Welding position carries out the pre-heat treatment, 450 degree of preheating temperature, when reaching preheating temperature, is subjected to immediately, welding process It is middle heat and keep temperature at 450 degree to welding position using grilled gun, it is heat-treated and grasps after being carried out after the completion of welding to part Make, then the weld seam of the part good to welding equipment is handled, and the splashing of face of weld and deburred is clean and spare；
S6, fin part complete welding after, it is first put into electrochemical deoiling agent and carries out oil removal treatment, after the completion with from Sub- water cleaning one time spare；
S7, by step S6 treated fin part is put into progress shot blasting on surface processing in compressed air shotblasting machine, blow away zero after the completion Part blasting media remained on surface；
S8, step S7 treated fin part is subjected to phosphorating treatment, specially in investment etching solution, and carried out Ultrasonication is taken out spare after the completion；
S9, high thermal conductivity graphite composite material is sprayed in the surface of step S8 treated fin part, forms high thermal conductivity stone Layer of ink；
S10, by step S9, treated that fin part is put into hothouse is dried；
S11, the fin part that processing is completed is installed to finned tube tube body.
In conclusion technical solution of the present invention have it is below the utility model has the advantages that
1, using curve fin body, meet curvilinear equation, heat exchange efficiency and heat transfer effect can greatly be improved, it is full Foot production heat exchange demand；
2, curve fin body meets defined curvilinear equation, can produce in batches, meet technique production requirement；
3, curve fin body includes level-one fin body and second level fin body, can be for any medium of fin surface Its flow-disturbing effect can be improved, heat exchange efficiency is enhanced；
4, the pretreatment behaviour for choosing copper alloy plate as raw material, and being derusted, be heat-treated and being rolled to copper alloy plate Make, improves the mechanical performance of fin；
5, part is processed in numerically-controlled machine tool, can guarantee that fin part meets scheduled equation and size, and be convenient for Large-scale production；
6, after part completes the process substantially, multiple parameters physical property, dimensional accuracy, straightness, table are carried out to it The detection of face finish guarantees that fin part can reach the requirement of predetermined processing technology；
7, when being subjected to fin, the pre-heat treatment first is carried out to welding position, and is continued in the welding process Heating, the improvement of this technique ensure that the coupling stiffness of welding position；
8, the surface strength that fin is substantially increased to fin progress oil removing, shot-peening, parkerized technological operation, extends Its service life.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of external curve finned tube of the invention；
Fig. 2 is the schematic diagram of external curve finned tube reference axis A of the invention；
Fig. 3 is the schematic diagram of external curve finned tube reference axis B of the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work Other embodiment belongs to the range that the present invention is protected.
As shown in Figure 1-3, a kind of external curve finned tube comprising tube body 1 and the fin 2 positioned at tube wall, it is described Tube body 1 is made of metal material, and the fin 2 uses aluminium or copper material, which is characterized in that the fin 2 includes level-one wing Sheet body 3 and second level fin body 4, the second level fin body 4 is arranged in the level-one fin body 3, in each level-one fin body 3 Multiple second level fin bodies 4, multiple second level fin bodies 4 asymmetric arrangement in the level-one fin body 3, multiple fins are set 2 on 1 outer wall of tube body perpendicular to arrangement annular in shape on the direction of pipe axis, constitute multiple annulus fins sets, the multiple circle Distance values in ring fins set between adjacent annulus fins set are become larger in the direction along pipe axis by small, are arranged in equal difference Column；
The level-one fin body 3 includes straightway 5 and curved section 6, and the straightway 5 is in contact with 1 outer wall of tube body And the angle between inclined arrangement, with 1 outer wall of tube body is the end of the curved section 6 and the straightway 5 between 25-35 ° End is connected, and the curved section 6 meets following first equation:
Wherein x, y are the coordinate values at any point on the curved section 6, and the reference axis A of the equation is based on straightway 5 Midpoint be the center of circle, the midpoint i.e. straightway is divided equally into two sections equal of midpoint, along straightway 5 to far from tube body side To X-axis is extended to, straightway upper and lower ends are the reference axis of Y-axis, wherein a > 0, b > 0；
The second level fin body 4 is arranged on the curved section 6 of the level-one fin body 3, the second level fin body 4 meet with Lower second equation:
y1=a1x1 2； (2)
Wherein x1, y1For the coordinate value at any point in the second level fin body 4, the reference axis B of the equation is with second level fin body 4 with the intersection point of the curved section 6 be origin, is X with the tangent direction of the curved section 61Axis, the above are Y for tangent line1The reference axis of axis, x1For using second level fin body 4 and 6 junction of curved section as origin, tangentially distance of the extending direction apart from the origin, y1For distance The height value of the tangent line, a1For coefficient, value range 0.2-0.3.
Preferably, there are two second level fin bodies 4 for setting in the level-one fin body 3.
Preferably, the spacing in the multiple annulus fins set between adjacent rings fins set etc. differences be 0.3cm.
The present invention also provides a kind of manufacturing methods of external spiral curve finned tube, include the following steps:
S1, selection copper alloy plate are pre-processed as raw material, and to copper alloy plate, and the pretreatment includes to described Copper alloy plate surface is derusted, and the derusting is completed in such a way that chemical reagent is reacted with the oxide of copper, the pre- place Reason further includes that the copper alloy plate surface is heat-treated and is rolled；
S2, the straightway that the level-one fin body is processed in numerically-controlled machine tool, the size of the straightway are predetermined size, The curved section of the level-one fin body is processed in numerically-controlled machine tool, which meets first equation, adds in numerically-controlled machine tool Second level fin body described in work, the second level fin body meet the second equation；
S3, when above-mentioned part after processing is completed, with abrasive machine remove feeders, overlap, attachment, piece surface is handled into light It is sliding；
S4, the detection that physical property, dimensional accuracy, straightness, surface smoothness are carried out to above-mentioned part, if above-mentioned parameter The requirement of not up to predetermined processing technology, then reject the part；
S5, the straightway that the curved section of the level-one fin body is soldered to the level-one fin body, by the second level wing Sheet body is welded on the curved section of the level-one fin body, and specific welding procedure processes welding groove to be first on part, and right Welding position carries out the pre-heat treatment, 450 degree of preheating temperature, when reaching preheating temperature, is subjected to immediately, welding process It is middle heat and keep temperature at 450 degree to welding position using grilled gun, it is heat-treated and grasps after being carried out after the completion of welding to part Make, then the weld seam of the part good to welding equipment is handled, and the splashing of face of weld and deburred is clean and spare；
S6, fin part complete welding after, it is first put into electrochemical deoiling agent and carries out oil removal treatment, after the completion with from Sub- water cleaning one time spare；
S7, by step S6 treated fin part is put into progress shot blasting on surface processing in compressed air shotblasting machine, blow away zero after the completion Part blasting media remained on surface；
S8, step S7 treated fin part is subjected to phosphorating treatment, specially in investment etching solution, and carried out Ultrasonication is taken out spare after the completion；
S9, high thermal conductivity graphite composite material is sprayed in the surface of step S8 treated fin part, forms high thermal conductivity stone Layer of ink；
S10, by step S9, treated that fin part is put into hothouse is dried；
S11, the fin part that processing is completed is installed to finned tube tube body.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.

Claims (4)

1. a kind of external curve finned tube comprising tube body and the fin positioned at tube wall, the tube body use metal material Production, the fin use aluminium or copper material, which is characterized in that the fin includes level-one fin body and second level fin body, institute It states second level fin body to be arranged in the level-one fin body, multiple second level fin bodies is set in each level-one fin body, it is multiple Second level fin body asymmetric arrangement in the level-one fin body, multiple fins are on tube wall perpendicular to pipe axis Arrangement annular in shape on direction, constitutes multiple annulus fins sets, in the multiple annulus fins set adjacent annulus fins set it Between distance values become larger in the direction along pipe axis by small, be in equal-difference arrangement；
The level-one fin body includes straightway and curved section, and the straightway is in contact with the tube wall and inclined cloth It sets, the angle between tube wall is between 25-35 °, and the curved section is connected with the end of the straightway, the song Line segment meets following first equation:
Wherein x, y are the coordinate values at any point on the curved section, and the reference axis A of the equation is based on the midpoint of straightway For the center of circle, extend to X-axis to the direction far from tube body along straightway, straightway upper and lower ends are the reference axis of Y-axis, wherein a > 0, b > 0；
The second level fin body is arranged on the curved section of the level-one fin body, and the second level fin body meets following second party Journey:
y1=a1x1 2； (2)
Wherein x1, y1For the coordinate value at any point in the second level fin body, the reference axis B of the equation is with second level fin body and institute The intersection point for stating curved section is origin, is X with the tangent direction of the curved section1Axis, the above are Y for tangent line1The reference axis of axis, x1For with Second level fin body and curved section junction are origin, tangentially distance of the extending direction apart from the origin, y1For apart from the tangent line Height value, a1For coefficient, value range 0.2-0.3.
2. a kind of external curve finned tube according to claim 1, there are two second level fins for setting in the level-one fin body Body.
3. a kind of external curve finned tube according to claim 1, adjacent rings fins set in the multiple annulus fins set Between spacing etc. differences be 0.3cm.
4. a kind of manufacturing method of external curve finned tube according to claim 3, which comprises the steps of:
S1, selection copper alloy plate are pre-processed as raw material, and to copper alloy plate, and the pretreatment includes closing to the copper Golden plate surface is derusted, and the derusting is completed in such a way that chemical reagent is reacted with the oxide of copper, and the pretreatment is also Including the copper alloy plate surface is heat-treated and is rolled；
The size of S2, the straightway that the level-one fin body is processed in numerically-controlled machine tool, the straightway are predetermined size, in numerical control The curved section of the level-one fin body is processed in lathe, which meets first equation, institute is processed in numerically-controlled machine tool Second level fin body is stated, the second level fin body meets the second equation；
S3, when above-mentioned part after processing is completed, with abrasive machine remove feeders, overlap, attachment, piece surface is handled smooth；
S4, the detection that physical property, dimensional accuracy, straightness, surface smoothness are carried out to above-mentioned part, if above-mentioned parameter does not reach To the requirement of predetermined processing technology, then the part is rejected；
S5, the straightway that the curved section of the level-one fin body is soldered to the level-one fin body, by the second level fin body It is welded on the curved section of the level-one fin body, specific welding procedure processes welding groove to be first on part, and to welding Position carries out the pre-heat treatment, 450 degree of preheating temperature, when reaching preheating temperature, is subjected to, makes immediately in welding process Heat and keep temperature at 450 degree to welding position with grilled gun, heat treatment operation after being carried out after the completion of welding to part, with The weld seam of the part good to welding equipment is handled afterwards, and the splashing of face of weld and deburred is clean and spare；
After S6, fin part complete welding, it is first put into electrochemical deoiling agent and carries out oil removal treatment, uses ionized water after the completion Cleaning one time spare；
S7, by step S6 treated fin part is put into progress shot blasting on surface processing in compressed air shotblasting machine, blow away parts list after the completion The remaining blasting media in face；
S8, step S7 treated fin part is subjected to phosphorating treatment, specially in investment etching solution, and carries out ultrasound Wave processing, takes out spare after the completion；
S9, high thermal conductivity graphite composite material is sprayed in the surface of step S8 treated fin part, forms high thermal conductivity graphite linings；
S10, by step S9, treated that fin part is put into hothouse is dried；
S11, the fin part that processing is completed is installed to finned tube tube body.
CN201711427856.7A 2017-12-26 2017-12-26 A kind of external curve finned tube and its manufacturing method Active CN108195218B (en)

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CN109655990B (en) * 2019-02-13 2021-06-08 深圳市欢庆五金科技有限公司 Processing method of optical lens adjusting elastic sheet

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JP2003214792A (en) * 2002-01-18 2003-07-30 Usui Internatl Ind Co Ltd Fin tube
JP4057406B2 (en) * 2002-10-09 2008-03-05 アスモ株式会社 Stator core, core sheet manufacturing method, and stator manufacturing method
CN1789880A (en) * 2005-12-16 2006-06-21 华南理工大学 Integral external finned tube and method for manufacturing the same
CN201229141Y (en) * 2008-04-21 2009-04-29 中国石油化工集团公司 Fin tube and external heat exchanger of the fin tube
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