CN103851945B - Internal threaded pipe with rough internal surface - Google Patents

Internal threaded pipe with rough internal surface Download PDF

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Publication number
CN103851945B
CN103851945B CN201210523540.9A CN201210523540A CN103851945B CN 103851945 B CN103851945 B CN 103851945B CN 201210523540 A CN201210523540 A CN 201210523540A CN 103851945 B CN103851945 B CN 103851945B
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CN
China
Prior art keywords
riffled tube
scope
tooth
depression
projection
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.)
Active
Application number
CN201210523540.9A
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Chinese (zh)
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CN103851945A (en
Inventor
郎言平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
The Nobel and Daaotuo copper (Zhongshan) Co. Ltd.
Original Assignee
Nobel And Daaotuo Copper (zhongshan) Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to CN201210523540.9A priority Critical patent/CN103851945B/en
Application filed by Nobel And Daaotuo Copper (zhongshan) Co Ltd filed Critical Nobel And Daaotuo Copper (zhongshan) Co Ltd
Priority to KR1020157014860A priority patent/KR20150092151A/en
Priority to EP13786488.0A priority patent/EP2929270A1/en
Priority to US14/647,302 priority patent/US20150316329A1/en
Priority to CA2893625A priority patent/CA2893625A1/en
Priority to JP2015545714A priority patent/JP2016509661A/en
Priority to BR112015013309A priority patent/BR112015013309A2/en
Priority to MX2015007197A priority patent/MX2015007197A/en
Priority to PCT/EP2013/073110 priority patent/WO2014086543A1/en
Publication of CN103851945A publication Critical patent/CN103851945A/en
Application granted granted Critical
Publication of CN103851945B publication Critical patent/CN103851945B/en
Active legal-status Critical Current
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Classifications

    • 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
    • F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
    • F28F13/185—Heat-exchange surfaces provided with microstructures or with porous coatings
    • F28F13/187—Heat-exchange surfaces provided with microstructures or with porous coatings especially adapted for evaporator surfaces or condenser surfaces, e.g. with nucleation sites

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Metal Extraction Processes (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Powder Metallurgy (AREA)

Abstract

The invention provides an internal threaded pipe with a rough internal surface. The internal surface of the internal threaded pipe is grooved into a pattern, the pattern comprises at least one tooth, and at least one part of the at least one tooth is roughened.

Description

Riffled tube with rough inner-surface
Technical field
The present invention relates to riffled tube, in particular it relates to be used for the riffled tube for conducting heat, especially seamless riffled tube.
Background technology
In a heat exchanger, seamless pipe is used（Especially it is made up of the material of the high thermoconductivity of such as copper and aluminium seamless Pipe）To circulate heat transport fluid to carry out heat exchange heat transfer.The internal notches of pipe have internal thread to increase inner surface, with heat-carrying Larger heat exchange surface area is obtained between fluid and the inner surface of pipe and turbulent flow is manufactured, so as to improve heat exchanger effectiveness.
In a heat exchanger, the pipe using riffled tube rather than with common inner surface significantly improves heat exchanger effectiveness, from And save energy environmental protection.Even so, people's increasingly concern for the environment, worries to use heat exchanger meeting more and more widely Potential adverse effect is produced to environment, thus requirements at the higher level are proposed to heat exchanger effectiveness constantly.
The content of the invention
It is an object of the invention to provide a kind of riffled tube for improving heat exchanger effectiveness.The inner surface of pipe is slotted into figure Case, the pattern includes at least one tooth.At least a portion of at least one tooth is roughened.
Foregoing general description and following detailed description and explanation are only exemplary, and do not limit the present invention.
Brief description of the drawings
Accompanying drawing is merged in specification and constitutes the part of this specification, and accompanying drawing shows several implementations of the invention Example, is used to explain principle of the invention together with specification.
Fig. 1 shows the longitudinal section of seamless riffled tube according to an embodiment of the invention（Top figure）With horizontal section view Figure（Base map）;
Fig. 2 is the sectional view of the seamless riffled tube of an implementation method of the invention, shows the coarse interior table of pipe Face;
Fig. 3 is the sectional view of seamless riffled tube according to another embodiment of the invention, shows the coarse interior table of pipe Face.
Specific embodiment
Fig. 1 shows the longitudinal section of seamless riffled tube according to an embodiment of the invention（Top figure）With horizontal section view Figure（Base map）.Shown pipe is seamless pipe, and it is made by the way that hollow steel billet is pulled through into the hollow housing of mould generation 's（By contrast, welded pipe is made up of two edges of milled sheet and welded plate）, however, the pipe can also have weldering The pipe of seam.It is pattern that the inner surface of pipe is slotted.Although the pipe shown in Fig. 1 has internal thread, i.e. its inner surface is slotted into Screw thread, but one skilled in the art will appreciate that the inner surface can also slot into any suitable pattern, for example, along the vertical of pipe To multiple teeth that axis extends, or helix on the inside pipe surface.Grooved pattern shown in Fig. 1 includes at least one tooth 1, It includes top 2, side surface 3 and bottom 4.Tooth 1 increased the area of the inner surface of pipe, so as to increased heat transport fluid and pipe Heat exchange surface area between inner surface, is thus provided that heat exchanger effectiveness higher.Tooth 1 influences the flowing of heat transport fluid；One The flowing of segment fluid flow must be consistent with the spiral path that tooth 1 is extended, and this causes turbulent flow in a fluid, so as to also improve hot friendship Change efficiency.
The heat exchanger effectiveness of seamless riffled tube can be further improved by making the part roughening of tooth 1.Tooth 1 it is thick Rough surface can further increase the contact area between heat transport fluid and the inner surface of the pipe, so as to can further improve heat Exchange efficiency.Additionally, coarse surface provides more positions for being used to form bubble（It is phase transition process to form bubble, is institute The result of " nucleation " process of meaning, " nucleation " generally occurs on the interface of rough walls）, minute bubbles can depart from from surface, so that Heat exchange is accelerated, so as to also improve heat exchanger effectiveness.
The roughness of inner surface can be distributed on the surface of tooth 1 in any suitable manner.For example, tooth 1 can be made Whole surface（Including top 2, side surface 3, bottom 4）Roughening；Only it is roughened the side surface 2 of tooth 1；Or make 2 Hes of top Side surface 3 is roughened.Fig. 2 and Fig. 3 show two embodiments of the invention, and at least a portion of the wherein bottom 4 of tooth 1 is coarse Change, and the top 2 of tooth 1 and side surface 3 are smooth.By only making the rough inner surface at the bottom 4 of tooth 1, at bottom 4 There is provided more heat exchange surfaces and more bubble formation positions（" nucleating point "）, which significantly enhances heat exchange effect Rate, simultaneously as the top 2 of tooth 1 and side surface 3 are still smooth, so that the influence to heat transport fluid flowing is minimized.
Rough surface can take any suitable form.Fig. 2 illustrates a kind of form, and the bottom 4 of tooth therein 1 includes Multiple depressions 5.These depressions 5 are randomly distributed on bottom surface 4.Depression 5 can be any shape；For example, depression 5 is the bottom of at Opening at the plane in portion 4 can be circular, square or Else Rule or irregular shape, it is described Open Side Down extend When be tapered so that it is spherical, taper, inverted pyramid or other any rules or not that depression 5 is shaped generally as The shape of rule.Depression 5 can be sized to：The size of the opening being recessed at bottom 4（On the Zhou Yan of measured opening Farthest each other the distance between 2 points of distance）In the scope from 0.0001mmmm to 0.01mm, and depression 5 depth（From Plane where bottom 4（That is, the top of depression 5）To the distance measured by the bottom of depression 5）Arrived in 0.0001mm mm In the scope of 0.01mm.For example, the size of the opening of depression 5 can be 0.0001mm, 0.001mm, 0.005mm or these sizes Between any value.The depth of depression 5 can be any value between 0.0001mm, 0.001mm, 0.005mm or these sizes.
The rough surface of seamless riffled tube as described above can be made up of any suitable technique.For example, can be with Rough surface is made in the following manner：Pipe is set to be stretched across the mould that at least a portion on its surface is roughened, with Just cause that at least a portion of at least one tooth is roughened in drawing process.
Fig. 3 illustrates another embodiment of rough surface.Multiple projections that the bottom 4 of tooth 1 includes.Projection 6 is on bottom surface 4 Brokenly it is distributed.Projection 6 can be any shape, for example, the edge of projection 6 is parallel to the transversal of the plane interception of bottom 4 Face can be circular, square or any other regular or irregular shape, and this it is transversal towards tip gradually become Carefully, making the concave shape turns into general conical, pyramid or any other regular or irregular shape.Projection 6 can determine Size is：The size of the cross section of the bases of projection 6（Distance is farthest each other on the Zhou Yan of measured cross section 2 points The distance between）In the scope of 0.0001mmmm to 0.01mm, and projection 6 height 0.0001mm to 0.01mm scope In.For example, the size of the cross section of the bases of projection 6 can be 0.0001mm, 0.001mm, 0.005mm or these sizes it Between any value.The height of projection 6 can be any value between 0.0001mm, 0.001mm, 0.005mm or these sizes.
The rough surface of seamless riffled tube as described above can be made up of any suitable technique.For example, it can It is made with by the corresponding inner surface for being sintered to metallic particles.Specifically, core bar is inserted into seamless riffled tube In, remain with gap between the inwall and plug of seamless riffled tube；By metallic particles be filled into gap corresponding to coarse table The part in face, then, by with the heating of the seamless riffled tube of the tube core bar and metallic particles with by the metallic particles Sinter to a part to be roughened for inner surface.
Inventor tests to the riffled tube of 7mm, to compare the riffled tube and tool with rough inner-surface There is the heat exchanger effectiveness of the riffled tube of smooth inner surface.Experiment shows, relative to interior spiral shell of the use with slippery inner surface The heat exchanger of line pipe, can be improved using the heat exchanger effectiveness of the heat exchanger of the above-mentioned riffled tube with rough inner-surface About 20%, this significantly save energy.
In specification above, each preferred embodiment is described with reference to accompanying drawing.It will be apparent, however, that can be right It carries out various other modifications and variations, and can realize further embodiment, without deviating from such as in following claims Described in of the invention wider scope.For example, the riffled tube is seamless steel pipe, but, it can also be welding Pipe.The specification and drawings should correspondingly be considered as illustrative and not restrictive.
Specification of the invention and practice, those skilled in the art can know that other embodiments.This specification and Embodiment is to be considered merely as exemplary, and the true scope and spirit of the invention is defined by the claims.

Claims (14)

1. a kind of riffled tube, slots into pattern on the inner surface of the riffled tube, and the pattern includes at least one tooth, its It is characterised by, at least one tooth has top, side surface and bottom, and the top of at least one tooth and side surface are light Sliding, at least a portion of the bottom of at least one tooth is roughened, the part being roughened of at least one tooth Including the multiple depressions or multiple projections that are randomly distributed.
2. riffled tube as claimed in claim 1, it is characterised in that the riffled tube is seamless.
3. riffled tube as claimed in claim 1, it is characterised in that the multiple depression is dimensioned so as to:The depth of depression In the scope from 0.0001mm to 0.01mm, the size of the opening of depression is in the scope from 0.0001mm to 0.01mm for degree.
4. riffled tube as claimed in claim 2, it is characterised in that the multiple depression is dimensioned so as to:The depth of depression In the scope from 0.0001mm to 0.01mm, the size of the opening of depression is in the scope from 0.0001mm to 0.01mm for degree.
5. riffled tube as claimed in claim 3, it is characterised in that the depth of the depression is 0.001mm's to 0.005mm In scope, the size of the opening of the depression is in the scope of 0.001mm to 0.005mm.
6. riffled tube as claimed in claim 4, it is characterised in that the depth of described depression is in 0.001mm to 0.005mm Scope in, the size of the opening of the depression is in the scope of 0.001mm to 0.005mm.
7. riffled tube as claimed in claim 1, it is characterised in that the multiple projection is dimensioned so as to:The height of projection Degree in the scope from 0.0001mm to 0.01mm, projection the section of bases size from 0.0001mm to 0.01mm In scope.
8. riffled tube as claimed in claim 2, it is characterised in that the multiple projection is dimensioned so as to:The height of projection Degree in the scope from 0.0001mm to 0.01mm, projection the section of bases size from 0.0001mm to 0.01mm In scope.
9. riffled tube as claimed in claim 7, it is characterised in that the height of the projection is 0.001mm's to 0.005mm In scope, the projection the section of bases size in the scope of 0.001mm to 0.005mm.
10. riffled tube as claimed in claim 8, it is characterised in that the height of the projection is in 0.001mm to 0.005mm Scope in, the projection the section of bases size in the scope of 0.001mm to 0.005mm.
11. riffled tube as any one of claim 1-10, it is characterised in that the riffled tube is by copper or copper Alloy is made.
12. riffled tube as any one of claim 1-10, it is characterised in that at least one tooth is configured to Helix on the inner surface of the riffled tube.
13. riffled tube according to any one of claim 3-6, it is characterised in that at least one tooth it is thick The part of roughening is made of to be stretched across mould by by the riffled tube, and at least a portion on the surface of the mould is thick Roughening is so that at least a portion roughening of at least one tooth.
14. riffled tube according to any one of claim 7-10, it is characterised in that the quilt of at least one tooth The part of roughening is made by the way that metallic particles is sintered into the part to be roughened of at least one tooth.
CN201210523540.9A 2012-12-07 2012-12-07 Internal threaded pipe with rough internal surface Active CN103851945B (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
CN201210523540.9A CN103851945B (en) 2012-12-07 2012-12-07 Internal threaded pipe with rough internal surface
EP13786488.0A EP2929270A1 (en) 2012-12-07 2013-11-06 A grooved tube
US14/647,302 US20150316329A1 (en) 2012-12-07 2013-11-06 A grooved tube
CA2893625A CA2893625A1 (en) 2012-12-07 2013-11-06 A grooved tube
KR1020157014860A KR20150092151A (en) 2012-12-07 2013-11-06 A grooved tube
JP2015545714A JP2016509661A (en) 2012-12-07 2013-11-06 Grooved tube
BR112015013309A BR112015013309A2 (en) 2012-12-07 2013-11-06 a grooved pipe.
MX2015007197A MX2015007197A (en) 2012-12-07 2013-11-06 A grooved tube.
PCT/EP2013/073110 WO2014086543A1 (en) 2012-12-07 2013-11-06 A grooved tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210523540.9A CN103851945B (en) 2012-12-07 2012-12-07 Internal threaded pipe with rough internal surface

Publications (2)

Publication Number Publication Date
CN103851945A CN103851945A (en) 2014-06-11
CN103851945B true CN103851945B (en) 2017-05-24

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ID=49546410

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210523540.9A Active CN103851945B (en) 2012-12-07 2012-12-07 Internal threaded pipe with rough internal surface

Country Status (9)

Country Link
US (1) US20150316329A1 (en)
EP (1) EP2929270A1 (en)
JP (1) JP2016509661A (en)
KR (1) KR20150092151A (en)
CN (1) CN103851945B (en)
BR (1) BR112015013309A2 (en)
CA (1) CA2893625A1 (en)
MX (1) MX2015007197A (en)
WO (1) WO2014086543A1 (en)

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CN104197753A (en) * 2014-09-18 2014-12-10 苏州新太铜高效管有限公司 Heat exchanging tube for condenser
CN105806114A (en) * 2016-04-28 2016-07-27 汤勇 Preparation methods for novel multi-scale flat aluminum belt heat pipe
USD837356S1 (en) * 2016-09-15 2019-01-01 Ngk Insulators, Ltd. Catalyst carrier for exhaust gas purification
USD837357S1 (en) * 2016-09-15 2019-01-01 Ngk Insulators, Ltd. Catalyst carrier for exhaust gas purification
USD835769S1 (en) * 2016-09-15 2018-12-11 Ngk Insulators, Ltd. Catalyst carrier for exhaust gas purification
KR101832432B1 (en) * 2017-03-31 2018-02-26 한국과학기술원 Plate pulsating heat spreader with artificial cavities

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CN1898520A (en) * 2003-10-23 2007-01-17 沃尔弗林管子公司 Method and tool for making enhanced heat transfer surfaces

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CN1122444A (en) * 1994-07-01 1996-05-15 株式会社日立制作所 Heat exchanging tube used for refriging agent of non-co-boiling mixture and heat exchanger using same
US5682946A (en) * 1995-03-21 1997-11-04 Km Europa Metal Aktiengesellschaft Tube for use in a heat exchanger
CN1158409A (en) * 1995-06-19 1997-09-03 株式会社日立制作所 Heat exchanger
US6308775B1 (en) * 1996-03-28 2001-10-30 Km Europa Metal Ag Heat exchanger tube
CN1463353A (en) * 2001-04-17 2003-12-24 沃尔弗林管子公司 Improved heat transfer tube with grooved inner surface
CN1898520A (en) * 2003-10-23 2007-01-17 沃尔弗林管子公司 Method and tool for making enhanced heat transfer surfaces

Also Published As

Publication number Publication date
WO2014086543A1 (en) 2014-06-12
US20150316329A1 (en) 2015-11-05
CA2893625A1 (en) 2014-06-12
MX2015007197A (en) 2016-08-18
JP2016509661A (en) 2016-03-31
EP2929270A1 (en) 2015-10-14
CN103851945A (en) 2014-06-11
BR112015013309A2 (en) 2017-07-11
KR20150092151A (en) 2015-08-12

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