CN102706199A - Thorn convex heat exchange tube and manufacturing process of thorn convex heat exchange tube - Google Patents
Thorn convex heat exchange tube and manufacturing process of thorn convex heat exchange tube Download PDFInfo
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- CN102706199A CN102706199A CN2012101655266A CN201210165526A CN102706199A CN 102706199 A CN102706199 A CN 102706199A CN 2012101655266 A CN2012101655266 A CN 2012101655266A CN 201210165526 A CN201210165526 A CN 201210165526A CN 102706199 A CN102706199 A CN 102706199A
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- protruding
- thorn
- heat exchanger
- exchanger tube
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Abstract
The invention discloses a thorn convex heat exchange tube and a manufacturing process of the thorn convex heat exchange tube. The thorn convex heat exchange tube comprises a tube body, and the cross section of the tube body is flat. The thorn convex heat exchange tube is characterized in that a plurality of thorn convexes are axially and uniformly arranged on the inner wall of a straight surface corresponding to a long axis of the tube body along the pipe body; opposite thorn convexes on two straight surfaces are arranged in a staggered way; the arc surface corresponding to the short axis of the tube body is a smooth surface; the ratio of the height of the thorn convex to the length of the short axis of the tube body is e, wherein the e is smaller than 1 and greater than or equal to 1/6. The thorn convex heat exchange tube is high in heat exchange efficiency and long in service life and is suitable for various flow medium heat exchangers.
Description
Technical field
The present invention relates to a kind of protruding formula heat exchanger tube of thorn and manufacturing process thereof that is applicable to all kinds of flow media heat exchangers, be particularly useful in the vehicle engine exhaust gas cooling EGR.
Background technology
In the vehicle engine exhaust gas cooling EGR; In order to improve the heat exchange effect, flat tube or the U type flat tube that is provided with helical groove is installed usually, though the inner turbulence effect that forms of this type of heat exchanger tube body; Heat exchange efficiency is high; But have following problem: 1, also there is the screw thread distortion in its minor axis place, and stress is very concentrated, influences the service life of body; 2, its manufacturing process forms thread groove for elder generation on the pipe of welding fabrication, and then it is pressed into flat tube, or flat tube is bent to the U type again, forms U type flat tube.Press this weldering earlier, back, or weldering earlier, back are pressed, curved again manufacturing process makes body weld easy of crack in use, and service life is short; 3, owing to receive the restriction of weld, the degree of depth of thread groove also is restricted, and the heat exchange effect has much room for improvement.
Disclose among CN 101701779 A a kind of " multi-row pit heat exchange tube ", comprised the stainless steel body, be axially arranged with multi-row pit in the stainless steel tube surface along it, two adjacent row's groove position interlace.Under equal caliber condition; The making degree of depth of pit wants dark than the making degree of depth of the thread groove on thread groove flat tube or the U type flat tube on this heat exchanger tube; The heat exchange better effects if; But distribution and the making degree of depth of pit on body cambered surface inwall still can be restricted, and its reason is pit to be set can cause stress to concentrate equally on the cambered surface inwall, influences the service life of body.
Summary of the invention
Technical problem to be solved by this invention provides that a kind of heat exchange property is strong, the protruding formula heat exchanger tube of thorn and the manufacturing process thereof of long service life.
Technical scheme of the present invention is: this stings protruding formula heat exchanger tube; Comprise body, the body cross section is a flat, and its special character is: the major axis of said body is pairing to be faced inwall directly axially evenly to be provided with a plurality of thorns along body protruding; Face that relative thorn is protruding to be staggered directly for two; The pairing cambered surface of the minor axis of body is a smooth surface, and the protruding height of said thorn is e with the ratio of body minor axis length, 1/6≤e＜1.
Same to face adjacent two protruding spacings of thorn directly be s, s >=3.5mm.
The protruding height of said thorn is e with the ratio of body minor axis length, and 1/2≤e＜1 also can reach turbulence effect completely under the situation that the protruding number of applications of thorn reduces, significantly improve heat exchange efficiency.
The longitudinal section of said body is the U type, and said longitudinal section is the cross section along the body long axis direction.
The longitudinal section of said body is the U type, and said longitudinal section is the cross section along the body short-axis direction.
This stings the manufacturing process of protruding formula heat exchanger tube, and its special character is to comprise the steps:
1, the body stock area required according to single heat exchanger tube, the fixed a plurality of heat exchanger tube body stocks position of amount on stainless steel sheet strip forms two of flat tube surely in advance in each body stock position quantity then and faces directly and two cambered surface positions;
2, face directly two of each body stock and forge respectively on the position that to form a plurality of thorns protruding; The protruding row's multiple row that is of the same thorn of facing directly distributes; Face the protruding interlaced arrangement of relative thorn directly for two; Stinging protruding height meets the following conditions: the ratio that stings protruding height h and preformed body minor axis length d is e, 1/6≤e＜1;
3, be divided into a plurality of body stocks on the stainless steel sheet strip single;
4, typing is curled, and it is oblong flat tube that single body stock is curled into cross section;
5, welding pipe seam, the heat exchanger tube of formation flat tube shape.
Behind the welding pipe seam, the heat exchanger tube of flat tube shape is bent to the U type, form the heat exchanger tube of U type flat tube shape.
The invention has the beneficial effects as follows:
1, heat exchange property is strong.Because it is protruding that inboard wall of tube body is provided with thorn, the heat exchange area of body increases, and staggered thorn is protruding makes the gas through heat exchanger tube that turbulent phenomenon take place fully, increases substantially the coefficient of heat transfer, strengthens the heat exchange effect.
2, because that thorn is set on the inwall is protruding facing directly, reduce stress concentration degree greatly, so the making degree of depth of the groove on the protruding comparable thread groove flat tube of the making degree of depth (highly) of thorn is darker on this heat exchanger tube, the coefficient of heat transfer can improve about 20%.
3, because the pairing cambered surface of minor axis of body is a smooth surface; No thread groove or sting has protrudingly reduced stress and has concentrated, in the heat exchanger of temperature checker; The corresponding cambered surface of smooth minor axis has good thermal stress release performance, has effectively prolonged the service life of flat tube.
4, because manufacturing process adopts the mode that forging thorn earlier is protruding and typing is curled, weld the back,, prolonged service life so weld seam is not easy to crack.
Description of drawings
Fig. 1 is structural representation of the present invention (corresponding embodiment 1);
Fig. 2 is the cutaway view of A-A among Fig. 1;
Fig. 3 is the cutaway view of B-B among Fig. 1;
Fig. 4 is the protruding viewgraph of cross-section (corresponding embodiment 2) of thorn;
Fig. 5 is the structural representation (corresponding embodiment 2) of thorn convex edge axially-aligned;
Fig. 6 is structural representation of the present invention (corresponding embodiment 3);
Fig. 7 is the cutaway view of C-C among Fig. 6;
Fig. 8 is the cutaway view of D-D among Fig. 6;
Fig. 9 is structural representation of the present invention (corresponding embodiment 4).
Among the figure: body 1, face 101 directly, cambered surface 102, thorn protruding 2.
The specific embodiment
Embodiment 1:
Like Fig. 1-shown in Figure 3, this stings protruding formula heat exchanger tube, comprises stainless steel body 1, and body 1 cross section is a flat.Pairing two of the major axis of body 1 is faced 101 inwalls directly axially evenly to be provided with a plurality of thorns along body 1 protruding 2, and each is faced 101 inwalls directly and is respectively equipped with row's multiple row and stings protrudingly 2 in the present embodiment, stings protruding 2 and is Long Circle.The ratio that stings protruding 2 height h and stainless steel body 1 minor axis length d is e; 1/6≤e＜1; The same spacing of facing two adjacent on 101 thorns protruding 2 directly is s; S>=3.5mm, the minor axis length=5.7mm of present embodiment middle tube body, long axis length=12.4mm, e=1/6, the height h=0.95mm of thorn protruding 2, s=3.5mm.Two face thorn relative on 101 protruding 2 directly is staggered, and the pairing cambered surface 102 of the minor axis of body 1 is a smooth surface, and than the thread groove heat exchanger tube of same size, its coefficient of heat transfer improves 15%.
The manufacturing process that this stings protruding formula heat exchanger tube comprises the steps:
1, the body stock area required according to single heat exchanger tube, the fixed a plurality of heat exchanger tube body stocks position of amount on stainless steel sheet strip forms two of flat tube surely in advance in each body stock position quantity then and faces 101 and two cambered surface 102 positions directly;
2, face directly to forge respectively on 101 positions two of each body stock and form a plurality of thorns protruding 2; The same thorn of facing directly on 101 protruding 2 is row's multiple row and distributes; Face protruding 2 interlaced arrangement of thorn relative on 101 directly for two; Stinging protruding 2 height meets the following conditions: the ratio that stings protruding 2 height h and preformed body 1 minor axis length d is e, e=1/6;
3, be divided into a plurality of body stocks on the stainless steel sheet strip single;
4, typing is curled, and it is oblong flat tube that single body stock is curled into cross section;
5, welding pipe seam, the heat exchanger tube of formation flat tube shape.
Embodiment 2:
Like Fig. 4, shown in Figure 5, this stings protruding formula heat exchanger tube, stings half the more than or equal to minor axis length d of protruding 2 height h, less than minor axis length d, i.e. and 1/2≤e＜1, the same distance s＞3.5mm that faces two adjacent on 101 thorns protruding 2 directly.Height h=2.85mm, the s=5mm of the minor axis length=5.7mm of present embodiment middle tube body, long axis length=12.4mm, e=0.5, thorn protruding 2.Other are with embodiment 1.On the body of comparable size, the making degree of depth of thread groove is 0.8mm the most deeply; This stings protruding formula heat exchanger tube and compares with it, and the coefficient of heat transfer improves 20%.
Embodiment 3:
Like Fig. 6-shown in Figure 8, this stings protruding formula heat exchanger tube, and the cross section of body 1 is the flat of height greater than width, and the longitudinal section is the cross section along body 1 short-axis direction, is the U type.Pairing two of the major axis of body 1 is faced 101 inwalls directly axially evenly to be provided with a plurality of thorns along body 1 protruding 2, and each is faced 101 inwalls directly and is respectively equipped with row's multiple row and stings protrudingly 2 in the present embodiment, stings protruding 2 and is Long Circle.The ratio that stings protruding 2 height h and the minor axis length d of stainless steel body 1 is e; 1/6≤e＜1; The same spacing of facing two the adjacent thorns protruding 2 on 101 directly is s; S>=3.5mm, height h=3.8mm, the s=9mm of the minor axis length=5.7mm of present embodiment middle tube body, long axis length=12.4mm, e=2/3, thorn protruding 2.Two face two relative and adjacent on 101 thorns protruding 2 directly is staggered, and the pairing cambered surface 102 of the minor axis of body 1 is a smooth surface, and than the thread groove heat exchanger tube of same size, its coefficient of heat transfer improves 25%.
Its manufacturing process comprises the steps:
1, the body stock area required according to single heat exchanger tube, the fixed a plurality of heat exchanger tube body stocks position of amount on stainless steel sheet strip forms two of flat tube surely in advance in each body stock position quantity then and faces 101 and two cambered surface 102 positions directly;
2, face directly to forge respectively on 101 positions two of each body stock and form a plurality of thorns protruding 2; The same thorn of facing directly on 101 protruding 2 is row's multiple row and distributes; Face protruding 2 interlaced arrangement of thorn relative on 101 directly for two, sting protruding 2 height and meet the following conditions: the ratio that stings protruding 2 height h and preformed body minor axis length d is e=2/3;
3, be divided into a plurality of body stocks on the stainless steel sheet strip single;
4, typing is curled, and it is oblong flat tube that single body stock is curled into cross section;
5, welding pipe seam, the heat exchanger tube of formation flat tube shape;
6, the heat exchanger tube with the flat tube shape bends to the U type, forms the heat exchanger tube of U type flat tube shape.
Embodiment 4:
As shown in Figure 9, this stings protruding formula heat exchanger tube, comprises a stainless steel body 1, and the cross section of body 1 is the flat of width greater than height, and the longitudinal section is the cross section along body 1 long axis direction, is the U type.Height h=5.1mm, the s=10mm of the minor axis length=5.7mm of present embodiment middle tube body, long axis length=12.4mm, e=0.9, thorn protruding 2.Other are with embodiment 3.Than the thread groove heat exchanger tube of same size, its coefficient of heat transfer improves 25%.
Among the embodiment of the invention 1 (e=1/6, s=3.5mm), embodiment 2 (e=0.5, s=5 mm), embodiment 3 (e=2/3, s=9 mm) and the embodiment 4 (e=0.9, s=10 mm) protruding 2 degree of depth of thorn increased progressively successively, strengthened convection cell obstruction, increased heat exchange area; Stinging protruding 2 spacings increases gradually; Then on the body of equal length, sting protruding 2 production quantity and can reduce gradually, but still can realize turbulence phenomenon completely; Both having satisfied minimizing body upper stress concentrates distribution, prolongs the body requirement in service life; Significantly strengthened the heat exchange effect again, thread groove heat exchanger tube quite, comprehensive heat exchange property can improve more than 20%.
Claims (7)
1. one kind is stung protruding formula heat exchanger tube; Comprise body, the body cross section is a flat, it is characterized in that: the major axis of said body is pairing to be faced inwall directly axially evenly to be provided with a plurality of thorns along body protruding; Face that relative thorn is protruding to be staggered directly for two; The pairing cambered surface of the minor axis of body is a smooth surface, and the protruding height of said thorn is e with the ratio of body minor axis length, 1/6≤e＜1.
2. the protruding formula heat exchanger tube of thorn according to claim 1 is characterized in that: same to face adjacent two protruding spacings of thorn directly be s, s >=3.5mm.
3. the protruding formula heat exchanger tube of thorn according to claim 1 is characterized in that: the protruding height of said thorn is e with the ratio of body minor axis length, 1/2≤e＜1.
4. the protruding formula heat exchanger tube of thorn according to claim 1 is characterized in that: the longitudinal section of said body is the U type, and said longitudinal section is the cross section along the body long axis direction.
5. the protruding formula heat exchanger tube of thorn according to claim 1 is characterized in that: the longitudinal section of said body is the U type, and said longitudinal section is the cross section along the body short-axis direction.
6. the manufacturing process of the protruding formula heat exchanger tube of thorn as claimed in claim 1 is characterized in that, comprises the steps:
1), the body stock area required according to single heat exchanger tube, the fixed a plurality of heat exchanger tube body stocks position of amount on stainless steel sheet strip forms two of flat tube surely in advance in each body stock position quantity then and faces directly and two cambered surface positions;
2), face directly two of each body stock and forge respectively on the position that to form a plurality of thorns protruding; The protruding row's multiple row that is of the same thorn of facing directly distributes; Face the protruding interlaced arrangement of relative thorn directly for two; Stinging protruding height meets the following conditions: the ratio that stings protruding height h and preformed body minor axis length d is e, 1/6≤e＜1;
3), be divided into a plurality of body stocks on the stainless steel sheet strip single;
4), typing curls, it is oblong flat tube that single body stock is curled into cross section;
5), weld pipe seam, the heat exchanger tube of formation flat tube shape.
7. the manufacturing process of the protruding formula heat exchanger tube of thorn according to claim 6 is characterized in that: behind the welding pipe seam, the heat exchanger tube of flat tube shape is bent to the U type, form the heat exchanger tube of U type flat tube shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101655266A CN102706199A (en) | 2012-05-25 | 2012-05-25 | Thorn convex heat exchange tube and manufacturing process of thorn convex heat exchange tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101655266A CN102706199A (en) | 2012-05-25 | 2012-05-25 | Thorn convex heat exchange tube and manufacturing process of thorn convex heat exchange tube |
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| CN102706199A true CN102706199A (en) | 2012-10-03 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729093A (en) * | 2013-12-24 | 2015-06-24 | 罗伟强 | Water tank of heat-pump water heater |
| CN104748599A (en) * | 2013-12-30 | 2015-07-01 | 泰安鼎鑫冷却器有限公司 | High-strength and high-performance radiating tube |
| CN107957486A (en) * | 2017-12-25 | 2018-04-24 | 安徽工业大学 | A kind of experimental system for being used to detect coke water vapor reaction |
| CN110234411A (en) * | 2017-02-03 | 2019-09-13 | 维美德公司 | The method of heat-transfer pipe and manufacture heat-transfer pipe |
| CN114076301A (en) * | 2020-11-03 | 2022-02-22 | 中北大学 | Linear temperature-uniforming plate steam boiler |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR358914A (en) * | 1905-10-27 | 1906-03-12 | Charles Baudier | Cooler for internal combustion engines |
| US5172476A (en) * | 1991-08-14 | 1992-12-22 | General Motors Corporation | Method of manufacturing heat exchanger tubing |
| US5386629A (en) * | 1990-05-11 | 1995-02-07 | Showa Aluminum Kabushiki Kaisha | Tube for heat exchangers and a method for manufacturing the tube |
| CN1132552A (en) * | 1993-08-04 | 1996-10-02 | 因西尔科公司热部件部门 | Radiator tube and method and appts. for forming same |
| CN1520508A (en) * | 2001-12-18 | 2004-08-11 | 大和水箱工业有限公司 | Tube and its mfg. method, tube for heat exchanger and method for mfg. tube for heat exchanger, and heat exchanger and method for mfg. heat exchanger |
| CN101701779A (en) * | 2009-10-22 | 2010-05-05 | 锦州秀亭制管有限公司 | Multi-row pit heat exchange tube |
-
2012
- 2012-05-25 CN CN2012101655266A patent/CN102706199A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR358914A (en) * | 1905-10-27 | 1906-03-12 | Charles Baudier | Cooler for internal combustion engines |
| US5386629A (en) * | 1990-05-11 | 1995-02-07 | Showa Aluminum Kabushiki Kaisha | Tube for heat exchangers and a method for manufacturing the tube |
| US5172476A (en) * | 1991-08-14 | 1992-12-22 | General Motors Corporation | Method of manufacturing heat exchanger tubing |
| CN1132552A (en) * | 1993-08-04 | 1996-10-02 | 因西尔科公司热部件部门 | Radiator tube and method and appts. for forming same |
| CN1520508A (en) * | 2001-12-18 | 2004-08-11 | 大和水箱工业有限公司 | Tube and its mfg. method, tube for heat exchanger and method for mfg. tube for heat exchanger, and heat exchanger and method for mfg. heat exchanger |
| CN101701779A (en) * | 2009-10-22 | 2010-05-05 | 锦州秀亭制管有限公司 | Multi-row pit heat exchange tube |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729093A (en) * | 2013-12-24 | 2015-06-24 | 罗伟强 | Water tank of heat-pump water heater |
| CN104748599A (en) * | 2013-12-30 | 2015-07-01 | 泰安鼎鑫冷却器有限公司 | High-strength and high-performance radiating tube |
| CN110234411A (en) * | 2017-02-03 | 2019-09-13 | 维美德公司 | The method of heat-transfer pipe and manufacture heat-transfer pipe |
| CN110248713A (en) * | 2017-02-03 | 2019-09-17 | 维美德公司 | The method of heat-transfer pipe and manufacture heat-transfer pipe |
| US10981080B2 (en) | 2017-02-03 | 2021-04-20 | Valmet Ab | Heat transfer tube and method for manufacturing a heat transfer tube |
| CN110248713B (en) * | 2017-02-03 | 2022-04-19 | 维美德公司 | Heat transfer tube and method of manufacturing heat transfer tube |
| CN107957486A (en) * | 2017-12-25 | 2018-04-24 | 安徽工业大学 | A kind of experimental system for being used to detect coke water vapor reaction |
| CN114076301A (en) * | 2020-11-03 | 2022-02-22 | 中北大学 | Linear temperature-uniforming plate steam boiler |
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Application publication date: 20121003 |