CN104101246A - Heat exchange inner thread pipe and production method thereof - Google Patents
Heat exchange inner thread pipe and production method thereof Download PDFInfo
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- CN104101246A CN104101246A CN201410291116.5A CN201410291116A CN104101246A CN 104101246 A CN104101246 A CN 104101246A CN 201410291116 A CN201410291116 A CN 201410291116A CN 104101246 A CN104101246 A CN 104101246A
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- riffled tube
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Abstract
The invention discloses a heat exchange inner thread pipe and a production method thereof. Spiral threads are arranged on the inner wall of the inner thread pipe, and thread teeth of the same spiral thread are up-and-down wavy. The inner surface area of the inner thread pipe is further increased, the heat exchange efficiency is improved, and meanwhile, since the heights of the thread teeth of the single spiral thread are different, the circulation of a heat transfer medium is subjected to interference, and the heat transfer efficiency is increased.
Description
Technical field
The invention belongs to heat exchange tubing technical field, relate in particular to design and the production method of riffled tube.
Background technology
Due to good heat conductive performance, copper, aluminium alloy light pipe are always as heat converter structure material.Along with material technology progress, the heat exchanger structure materials such as copper riffled tube, aluminium riffled tube, copper aluminum composite pipes, copper aluminium compound thread pipe have been there is.Common riffled tube is as high-end product, and inwall has groove and groove with helical angle, utilizes the inside pipe wall layer of internal layer to contact heat absorption with cold-producing medium, and outer field aluminum pipe is as heat radiation object.Compare light pipe, common riffled tube utilizes inner wall trench to increase heat exchange area, has improved heat exchange efficiency, and can greatly improve tubing pressure withstanding degree with the groove of helical angle, there are very strong anti-leakage ability and anti-vibration fatigue rupture intensity, use safer.It is limited that but this common riffled tube inner surface increases degree, and the heat exchange efficiency of raising is also relatively limited.。
Summary of the invention
Goal of the invention: for the problem and shortage of above-mentioned existing existence, a kind of Novel hot exchange riffled tube and production method thereof have been the object of this invention is to provide, increased to a greater extent the internal surface area of riffled tube, improved heat exchange efficiency, thread height due to wall scroll spiral thread differs simultaneously, thereby interference effect is played in the circulation to heat transfer medium, accelerate heat transfer efficiency.
Technical scheme: for achieving the above object, the present invention by the following technical solutions: a kind of heat exchange riffled tube, described riffled tube inwall is provided with spiral thread, and the thread of same spiral thread is the corrugated that height rises and falls.
The helical angle of described spiral thread is that 0～40 °, addendum angle are that 5～60 °, tooth depth are 0.03～0.3mm.
The difference in height of the thread of described spiral thread is within the scope of 0～0.3mm.
The external diameter of described riffled tube is 5～15mm, and wall thickness is 0.25～1.0mm.
Material selection aluminum pipe, copper pipe, aluminium-alloy pipe or the copper alloy tube of described riffled tube.
The present invention also provides a kind of production method of above-mentioned heat exchange riffled tube, successively through corrugated thread forming, annealing, sizing, closing quotation, minute travelling expenses around with the deoiling step that homogenizes, wherein, corrugated thread forming adopts pipe rotary press modelling mode or the moulding of metal tooth welding manner with pressure:
Described pipe spinning mode, adopts spinning machine to carry out spinning processing to pipe material inner wall, and the spinning steel ball in described spinning machine is more than 3, and spinning steel ball size is 4～30mm, and spinning speed is 1000～50000r/min.
Described metal tooth welding manner with pressure, comprises the following steps (1) and adopts aluminium strip to press tooth to process, and forms groove on aluminium strip; (2) by pressing the aluminium strip after tooth is processed to carry out forming processes, form internal thread pipe; (3) then the place, gap of pipe is welded, finally by crossing shaping and heat treatment step, obtain internal thread aluminium pipe finished product.
Described riffled tube needs to draw by draw-gear in process of production, and this draw-gear is that crawler type, handstand dish are, upright disc type or V-type slot type.
The temperature of described annealing steps is 150～600 ℃, and adopts well formula annealing furnace, Horizental annealer, bell type annealing furnace or online annealing unit.
The temperature of the described oil removing that homogenizes is 150～6000 ℃
Beneficial effect: compared with prior art, the present invention has the following advantages: the inwall of heat exchange tubing arranges spiral thread, thread height due to wall scroll spiral thread when improving heat exchange internal surface area differs, thereby when increasing heat exchange area, the circulation of heat transfer medium is played to interference effect, accelerate heat transfer efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of heat exchange riffled tube of the present invention;
Fig. 2 is spiral thread profile of tooth of the present invention cross section enlarged drawing.
Wherein, α, addendum angle, h, tooth depth, i, end ancient piece of jade, round, flat and with a hole in its centre thickness, j, external diameter.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment is only not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
As illustrated in fig. 1 and 2, a kind of Novel internal thread pipe provided by the invention, is called again heat-exchange corrugated riffled tube, and inwall has spiral thread, and helical angle is 0～40 °, and addendum angle is 5～60 °, and tooth depth is 0.03～0.30mm; Same screw thread tooth depth is different, and height rises and falls, and is corrugated, and ripple rises and falls between 0-0.3mm; Different screw threads, flute profile is different; Different screw threads, tooth depth is different, and tooth depth difference is between 0-0.3mm; Different screw threads, addendum angle is different, and addendum angle difference is between 0-40 °; The number of teeth is the characteristics such as 0-100.This heat-exchange corrugated riffled tube can be copper pipe, aluminum pipe, copper alloy tube, aluminium alloy compo pipe or copper aluminum composite pipes.
The production method of above-mentioned heat-exchange corrugated riffled tube comprises that ripple thread forming, annealing, sizing, closing quotation, minute travelling expenses are around, the oil removing that homogenizes, packing warehouse-in treatment process; Ripple thread forming can be by being welded into pipe after pipe rotary press modelling or metal tooth with pressure.While adopting pipe rotary press modelling method, in spinning process, steel ball is more than 3, and spinning steel ball size is 4～30mm, and spinning rotating speed is 1,000～50,000 r/min; If while being welded into pipe method after employing metal tooth with pressure, concrete steps are as follows: take production specification as Φ 7.0 X 0.50+0.18-48Z (diameter 7mm, thickness 0.5mm, 18 ° of ditch angle of groove inclinations, 48 teeth, tooth depth 0.18mm) internal thread aluminium pipe is example, introduce in detail the processing method of internal thread aluminium pipe of the present invention: raw material adopts the 3003 type aluminum alloy strips that thickness is 0.5mm, aluminium strip width 22mm, first by high-precision pressure tooth machine, on aluminium strip, extruded with 18 ° of inclinations angle, the groove of tooth depth 0.18mm.Press the pressure tooth mould of tooth machine to have corresponding tooth depth, the number of teeth and helical angle, the aluminium riffled tube of production different model needs to change different moulds.Press the aluminium strip after tooth to enter HFI welding production line, by aluminium strip process shaped device volume place internal thread pipe originally, then weld weld seam through HFI welding.Finally carry out crator processing, concrete steps are by a modification bar, this modification masthead end is provided with scraper, this modification bar is slowly screwed in pipe, and control gap between scraper and internal thread in technological requirement, in the process screwing in again, internally the crator at surface weld place strikes off processing, guarantees that throat depth is consistent with tooth depth.Then pipe, by 3 groups of barrel rolls and 3 groups of edger rolls, is aligned and sizing.Welding is annealed online to pipe later, becomes soft state to be convenient to rolling annealing tubes.By finishing machine (being also called rewinding machine), carry out the finishing of product and flaw detection, rolling.Finally utilize well formula annealing furnace to carry out annealing in process, with the cleaning agent inside and outside scavenging duct and lubricating oil.
Ripple thread forming draw-gear is crawler type, handstand dish, upright disc type, V-type slot type; Annealing is by well formula annealing furnace, Horizental annealer, bell type annealing furnace or online annealing unit technique, and annealing temperature is 150～600 °; Homogenizing and removing oil temperature is 150～600 °.
Claims (9)
1. a heat exchange riffled tube, is characterized in that: described riffled tube inwall is provided with spiral thread, and the thread of same spiral thread is the corrugated that height rises and falls.
2. heat exchange riffled tube according to claim 1, is characterized in that: the helical angle of described spiral thread is that 0～40 °, addendum angle are that 5～60 °, tooth depth are 0.03～0.3mm.
3. heat exchange riffled tube according to claim 2, is characterized in that: the difference in height of the thread of described spiral thread is within the scope of 0～0.3mm.
4. heat exchange riffled tube according to claim 3, is characterized in that: the external diameter of described riffled tube is 5～15mm, and wall thickness is 0.25～1.0mm.
5. according to the arbitrary described heat exchange riffled tube of claim 1～4, it is characterized in that: material selection aluminum pipe, copper pipe, aluminium-alloy pipe or the copper alloy tube of described riffled tube.
6. the production method of the arbitrary described heat exchange riffled tube of claim 1～5, it is characterized in that: successively through corrugated thread forming, annealing, sizing, closing quotation, minute travelling expenses around with the deoiling step that homogenizes, wherein, corrugated thread forming adopts pipe rotary press modelling mode or the moulding of metal tooth welding manner with pressure:
Described pipe spinning mode, adopt spinning machine to carry out spinning processing to pipe material inner wall, spinning steel ball in described spinning machine is more than 3, spinning steel ball size is 4～30mm, spinning speed is 1000～50000r/min, described metal tooth welding manner with pressure, comprises the following steps (1) and adopts aluminium strip to press tooth to process, and forms groove on aluminium strip; (2) by pressing the aluminium strip after tooth is processed to carry out forming processes, form internal thread pipe; (3) then the place, gap of pipe is welded, finally by crossing shaping and heat treatment step, obtain internal thread aluminium pipe finished product.
7. the production method of heat exchange riffled tube according to claim 6, is characterized in that: described riffled tube needs to draw by draw-gear in process of production, and this draw-gear is that crawler type, handstand dish are, upright disc type or V-type slot type.
8. the production method of heat exchange riffled tube according to claim 6, is characterized in that: the temperature of described annealing steps is 150～600 ℃, and adopts well formula annealing furnace, Horizental annealer, bell type annealing furnace or online annealing unit.
9. the production method of heat exchange riffled tube according to claim 6, is characterized in that: described in the homogenize temperature of oil removing be 150～6000 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410291116.5A CN104101246A (en) | 2014-06-26 | 2014-06-26 | Heat exchange inner thread pipe and production method thereof |
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| CN201410291116.5A CN104101246A (en) | 2014-06-26 | 2014-06-26 | Heat exchange inner thread pipe and production method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107303635A (en) * | 2016-04-19 | 2017-10-31 | 贺尔碧格传动技术控股有限公司 | The manufacture method and sliding sleeve of the sliding sleeve of synchronous hand gear device assembly |
| CN108362157A (en) * | 2017-11-19 | 2018-08-03 | 江阴伊克赛特汽车饰件有限公司 | A kind of automobile intersection internal thread tubular type moulding |
| CN108555046A (en) * | 2018-05-16 | 2018-09-21 | 宁波金田铜管有限公司 | The ultra dense degree internal thread straight trough copper pipe of one kind and its process mould |
| CN114963486A (en) * | 2022-06-08 | 2022-08-30 | 常州瑞博节能新材有限公司 | Female screw pipe produced by composite aluminum strip and manufacturing method thereof |
| WO2023087957A1 (en) * | 2021-11-18 | 2023-05-25 | 格朗吉斯铝业（上海）有限公司 | Aluminum pipe, manufacturing method therefor, and full aluminum heat exchanger |
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| US6098420A (en) * | 1998-03-31 | 2000-08-08 | Sanyo Electric Co., Ltd. | Absorption chiller and heat exchanger tube used the same |
| CN101025348A (en) * | 2006-02-22 | 2007-08-29 | 威兰德-沃克公开股份有限公司 | Structured heat exchanger and method for its production |
| JP2010249484A (en) * | 2009-04-20 | 2010-11-04 | Mitsubishi Electric Corp | Heat exchanger and refrigerating cycle device |
| CN102716936A (en) * | 2012-05-03 | 2012-10-10 | 张起成 | Method for producing internal screw thread aluminum pipe for heat exchanging |
| CN103433323A (en) * | 2013-08-05 | 2013-12-11 | 江苏天潭科技材料有限公司 | Production method of internal thread aluminum pipe |
| CN204007278U (en) * | 2014-06-26 | 2014-12-10 | 江苏天潭科技材料有限公司 | A kind of heat exchange riffled tube |
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2014
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6098420A (en) * | 1998-03-31 | 2000-08-08 | Sanyo Electric Co., Ltd. | Absorption chiller and heat exchanger tube used the same |
| CN101025348A (en) * | 2006-02-22 | 2007-08-29 | 威兰德-沃克公开股份有限公司 | Structured heat exchanger and method for its production |
| JP2010249484A (en) * | 2009-04-20 | 2010-11-04 | Mitsubishi Electric Corp | Heat exchanger and refrigerating cycle device |
| CN102716936A (en) * | 2012-05-03 | 2012-10-10 | 张起成 | Method for producing internal screw thread aluminum pipe for heat exchanging |
| CN103433323A (en) * | 2013-08-05 | 2013-12-11 | 江苏天潭科技材料有限公司 | Production method of internal thread aluminum pipe |
| CN204007278U (en) * | 2014-06-26 | 2014-12-10 | 江苏天潭科技材料有限公司 | A kind of heat exchange riffled tube |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107303635A (en) * | 2016-04-19 | 2017-10-31 | 贺尔碧格传动技术控股有限公司 | The manufacture method and sliding sleeve of the sliding sleeve of synchronous hand gear device assembly |
| CN108362157A (en) * | 2017-11-19 | 2018-08-03 | 江阴伊克赛特汽车饰件有限公司 | A kind of automobile intersection internal thread tubular type moulding |
| CN108555046A (en) * | 2018-05-16 | 2018-09-21 | 宁波金田铜管有限公司 | The ultra dense degree internal thread straight trough copper pipe of one kind and its process mould |
| WO2023087957A1 (en) * | 2021-11-18 | 2023-05-25 | 格朗吉斯铝业（上海）有限公司 | Aluminum pipe, manufacturing method therefor, and full aluminum heat exchanger |
| CN114963486A (en) * | 2022-06-08 | 2022-08-30 | 常州瑞博节能新材有限公司 | Female screw pipe produced by composite aluminum strip and manufacturing method thereof |
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Application publication date: 20141015 |
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