CN203163578U - Internal threaded pipe with rough internal surface - Google Patents
Internal threaded pipe with rough internal surface Download PDFInfo
- Publication number
- CN203163578U CN203163578U CN 201220671786 CN201220671786U CN203163578U CN 203163578 U CN203163578 U CN 203163578U CN 201220671786 CN201220671786 CN 201220671786 CN 201220671786 U CN201220671786 U CN 201220671786U CN 203163578 U CN203163578 U CN 203163578U
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- Prior art keywords
- riffled tube
- tooth
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- size
- projection
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- 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.)
- Expired - Lifetime
Links
- 239000013528 metallic particle Substances 0.000 claims description 5
- 238000007788 roughening Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 8
- 230000001788 irregular Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The utility model provides an internal threaded pipe with a rough internal surface. Grooves of the internal surface of the pipe form a pattern; the pattern comprises at least one tooth; and at least one part of each tooth is roughened.
Description
Technical field
The utility model relates to riffled tube, particularly, relates to for the riffled tube that conducts heat, especially seamless riffled tube.
Background technology
In heat exchanger, use seamless pipe (especially making seamless pipe by the material such as the high thermoconductivity of copper and the aluminium) heat transport fluid that circulates to transmit to carry out heat exchange heat.The inside of pipe fluting has internal thread increasing inner surface, obtaining bigger heat exchange surface area and make turbulent flow between the inner surface of heat transport fluid and pipe, thereby improves heat exchanger effectiveness.
In heat exchanger, use riffled tube but not pipe with common inner surface significantly improves heat exchanger effectiveness, thereby save the energy conservation environment.However, people are concern for the environment more and more, worries to use heat exchanger to produce potential adverse effect to environment more and more widely, thereby constantly heat exchanger effectiveness is being proposed requirements at the higher level.
The utility model content
The purpose of this utility model provides a kind of riffled tube that improves heat exchanger effectiveness.Slot into pattern on the inner surface of pipe, this pattern comprises at least one tooth.At least a portion of described at least one tooth is roughened.
Described riffled tube can be made by copper or copper alloy.
The general description of front and following detailed and explanation only are exemplary, and do not limit the utility model.
Description of drawings
Accompanying drawing is merged in the specification and constitutes the part of this specification, and accompanying drawing shows several embodiment of the present utility model, is used from specification one and explains principle of the present utility model.
Fig. 1 illustrates the longitudinal section according to the seamless riffled tube of an embodiment of the present utility model;
Fig. 2 illustrates the transverse sectional view of riffled tube shown in Figure 1;
Fig. 3 is the cutaway view according to the seamless riffled tube of an embodiment of the present utility model, and the rough inner-surface of pipe is shown;
Fig. 4 is the cutaway view according to the seamless riffled tube of another embodiment of the present utility model, and the rough inner-surface of pipe is shown.
The specific embodiment
Fig. 1 and Fig. 2 illustrate respectively according to the longitudinal section of the seamless riffled tube of an embodiment of the present utility model and transverse sectional view.Shown pipe is seamless pipe, and it is to generate (by contrast, welded pipe is made by two edges of milled sheet and welded plate) that hollow housing is made by hollow steel billet being pulled through mould, yet this pipe also can be the pipe with weld seam.The inner surface of pipe is slotted to be pattern.Though the pipe shown in Fig. 1 and Fig. 2 has internal thread, that is, and the slotted one-tenth screw thread of its inner surface, but one skilled in the art will appreciate that described inner surface also can slot into any suitable pattern, for example, the a plurality of teeth that extend along the longitudinal axis of pipe, or the helix on the inner surface of pipe.Grooved pattern illustrated in figures 1 and 2 comprises at least one tooth 1, and it comprises top 2, side surface 3 and bottom 4.Tooth 1 has increased the area of the inner surface of pipe, thereby has increased the heat exchange surface area between the inner surface of heat transport fluid and pipe, and therefore higher heat exchanger effectiveness is provided.Tooth 1 influences flowing of heat transport fluid; A part the mobile of fluid must be consistent with the spiral path that tooth 1 extends, and this causes turbulent flow in fluid, thereby has also improved heat exchanger effectiveness.
Can further improve the heat exchanger effectiveness of seamless riffled tube by a part of roughening that makes tooth 1.The rough surface of tooth 1 can further increase the contact area between the inner surface of heat transport fluid and described pipe, thereby can further improve heat exchanger effectiveness.In addition, coarse surface provides the position that more is used to form bubble, and (forming bubble is phase transition process, be the result of so-called " nucleation " process, " nucleation " usually occurs on the interface of rough walls), minute bubbles can break away from from the surface, thereby accelerated heat exchange, thereby also improved heat exchanger effectiveness.
The roughness of inner surface can be distributed on the surface of tooth 1 in any suitable manner.For example, can make whole surface (comprising top 2, side surface 3, the bottom 4) roughening of tooth 1; Only make side surface 2 roughenings of tooth 1; Perhaps make top 2 and side surface 3 roughenings.Fig. 3 and Fig. 4 illustrate two embodiment of the present utility model, and wherein at least a portion of the bottom 4 of tooth 1 is roughened, and the top 2 of tooth 1 is level and smooth with side surface 3.The rough inner surfaceization at 4 places, bottom by only making tooth 1,4 places provide more heat exchange surface and more bubble to form position (" nucleating point ") in the bottom, this has improved heat exchanger effectiveness significantly, simultaneously, because it is smooth that the top 2 of tooth 1 and side surface 3 are still, thereby make the influence that heat transport fluid is flowed minimize.
Rough surface can be taked any suitable form.Fig. 3 illustrates a kind of form, a plurality of depressions 5 that the bottom 4 of tooth 1 wherein comprises.These 5 irregular distributions on bottom surface 4 of caving in.Depression 5 can be Any shape; For example, the opening at depression 5 place, 4 plane in the bottom can be circular, square or Else Rule or irregularly shaped, described Open Side Down is tapered when extending, and makes depression 5 form spherical, taper roughly, inverted pyramid or other any regular or irregular shape.Depression 5 can be sized to: be recessed in the size (in the distribution of measured opening distance the distance between farthest 2) each other of the opening at 4 places, bottom in the scope from 0.0001mmmm to 0.01mm, and 5 the degree of depth of caving in (from the plane (that is the top of depression 5) at 4 places, bottom to caving in 5 the measured distance in bottom) at 0.0001mm mm in the scope of 0.01mm.For example, the size of the opening of depression 5 can be any value between 0.0001mm, 0.001mm, 0.005mm or these sizes.The degree of depth of depression 5 can be any value between 0.0001mm, 0.001mm, 0.005mm or these sizes.
The rough surface of aforesaid seamless riffled tube can be made by any suitable technology.For example, can make rough surface in the following manner: pipe is stretched pass the mould that its surperficial at least a portion is roughened, in order in drawing process, make at least a portion of at least one tooth be roughened.
Fig. 4 illustrates another embodiment of rough surface.A plurality of projections that the bottom 4 of tooth 1 comprises.Projection 6 distributes on bottom surface 4 brokenly.Projection 6 can be Any shape, for example, the cross section that the edge of projection 6 is parallel to the planar interception of bottom 4 can be circular, square or any other regular or irregular shape, and this cross section is tapered to the tip, makes described being recessed to form be general conical, pyramid or any other regular or irregular shape.Projection 6 can be sized to: the size of the cross section of the bases of projection 6 (in the distribution of measured cross section distance the distance between farthest 2) each other at 0.0001mmmm in the scope of 0.01mm, and the height of projection 6 at 0.0001mm in the scope of 0.01mm.For example, the size of the cross section of the bases of projection 6 can be any value between 0.0001mm, 0.001mm, 0.005mm or these sizes.The height of projection 6 can be any value between 0.0001mm, 0.001mm, 0.005mm or these sizes.
The rough surface of aforesaid seamless riffled tube can be made by any suitable technology.For example, it can be by making on the corresponding inner surface that metallic particles is sintered to.Particularly, core bar is inserted in the seamless riffled tube, remain with the gap between the inwall of seamless riffled tube and the plug; Metallic particles is filled into the part corresponding to rough surface in gap, then, will has the seamless riffled tube heating of described tube core bar and metallic particles described metallic particles is sintered to the part to be roughened of inner surface.
The inventor experimentizes to the riffled tube of 7mm, with the riffled tube that relatively has rough inner-surface and the heat exchanger effectiveness with riffled tube of smooth inner surface.Experiment shows, has the heat exchanger of the riffled tube of smooth interior surfaces with respect to use, and it is about 20% to use the heat exchanger effectiveness of the heat exchanger of above-mentioned riffled tube with rough inner-surface to improve, and this saves the energy significantly.
In the specification in front, with reference to accompanying drawing each preferred embodiment is described.Yet, it is evident that, can carry out various other modifications and variations to it, and can realize additional embodiments, and not break away from as in the scope widely of the present utility model described in the claim subsequently.For example, described riffled tube is seamless steel pipe, and still, it also can be welded pipe.This specification and accompanying drawing correspondingly should be regarded as illustrative and not restrictive.
According to specification of the present utility model and practice, those skilled in the art can know other embodiment.It only is exemplary that this specification and embodiment are considered to, and true scope of the present utility model and spirit are defined by the claims.
Claims (15)
1. a riffled tube is slotted into pattern on the inner surface of described riffled tube, and described pattern comprises at least one tooth, it is characterized in that, at least a portion of described at least one tooth is roughened.
2. riffled tube as claimed in claim 1 is characterized in that, described riffled tube is seamless.
3. riffled tube as claimed in claim 1, it is characterized in that, the coarse part of described at least one tooth comprises a plurality of depressions, the size of described a plurality of depressions is set at: the degree of depth of depression is from the scope of 0.0001mm to 0.01mm, and the size of the opening of depression is from the scope of 0.0001mm to 0.01mm.
4. riffled tube as claimed in claim 2, it is characterized in that, the coarse part of described at least one tooth comprises a plurality of depressions, the size of described a plurality of depressions is set at: the degree of depth of depression is from the scope of 0.0001mm to 0.01mm, and the size of the opening of depression is from the scope of 0.0001mm to 0.01mm.
5. riffled tube as claimed in claim 3 is characterized in that, the degree of depth of described depression is in the scope of 0.001mm to 0.005mm, and the size of the opening of described depression is in the scope of 0.001mm to 0.005mm.
6. riffled tube as claimed in claim 4 is characterized in that, the degree of depth of described depression is in the scope of 0.001mm to 0.005mm, and the size of the opening of described depression is in the scope of 0.001mm to 0.005mm.
7. riffled tube as claimed in claim 1, it is characterized in that, the coarse part of described at least one tooth comprises a plurality of projections, the size of described a plurality of projections is set at: the height of projection is from the scope of 0.0001mm to 0.01mm, projection in the size in the cross section of bases from the scope of 0.0001mm to 0.01mm.
8. riffled tube as claimed in claim 2, it is characterized in that, the coarse part of described at least one tooth comprises a plurality of projections, the size of described a plurality of projections is set at: the height of projection is from the scope of 0.0001mm to 0.01mm, projection in the size in the cross section of bases from the scope of 0.0001mm to 0.01mm.
9. riffled tube as claimed in claim 7 is characterized in that, the height of described projection is in the scope of 0.001mm to 0.005mm, and described projection is in the scope of size at 0.001mm to 0.005mm in the cross section of bases.
10. riffled tube as claimed in claim 8 is characterized in that, the height of described projection is in the scope of 0.001mm to 0.005mm, and described projection is in the scope of size at 0.001mm to 0.005mm in the cross section of bases.
11. according to each described riffled tube among the claim 1-10, it is characterized in that, described at least one tooth has top, side surface and bottom, and the top of described at least one tooth and side surface are smooth, and at least a portion of the bottom of described at least one tooth is roughened.
12., it is characterized in that described riffled tube is to be made by copper or copper alloy as each described riffled tube among the claim 1-10.
13., it is characterized in that described at least one tooth is formed at the helix on the inner surface of described riffled tube as each described riffled tube among the claim 1-10.
14. according to each described riffled tube among the claim 3-6, it is characterized in that, the coarse part of described at least one tooth is to pass mould by described riffled tube is stretched to make, and at least a portion on the surface of described mould is roughened so that at least a portion roughening of described at least one tooth.
15., it is characterized in that the coarse part of described at least one tooth is to make by the part to be roughened that metallic particles is sintered to described at least one tooth according to each described riffled tube among the claim 7-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220671786 CN203163578U (en) | 2012-12-07 | 2012-12-07 | Internal threaded pipe with rough internal surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220671786 CN203163578U (en) | 2012-12-07 | 2012-12-07 | Internal threaded pipe with rough internal surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203163578U true CN203163578U (en) | 2013-08-28 |
Family
ID=49024756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220671786 Expired - Lifetime CN203163578U (en) | 2012-12-07 | 2012-12-07 | Internal threaded pipe with rough internal surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203163578U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595370A (en) * | 2016-11-17 | 2017-04-26 | 浙江耐乐铜业有限公司 | Tube expanding deformation directional induction type internally-threaded heat transfer tube |
| CN106595371A (en) * | 2016-11-17 | 2017-04-26 | 浙江耐乐铜业有限公司 | Internally-threaded copper tube structure |
| CN106767098A (en) * | 2016-11-17 | 2017-05-31 | 浙江耐乐铜业有限公司 | A kind of high efficient heat exchanging type copper pipe structure |
-
2012
- 2012-12-07 CN CN 201220671786 patent/CN203163578U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595370A (en) * | 2016-11-17 | 2017-04-26 | 浙江耐乐铜业有限公司 | Tube expanding deformation directional induction type internally-threaded heat transfer tube |
| CN106595371A (en) * | 2016-11-17 | 2017-04-26 | 浙江耐乐铜业有限公司 | Internally-threaded copper tube structure |
| CN106767098A (en) * | 2016-11-17 | 2017-05-31 | 浙江耐乐铜业有限公司 | A kind of high efficient heat exchanging type copper pipe structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170331 Address after: No. 1, South Industrial Road, Ma Xin Industrial Zone, Huang Pu town, Zhongshan, Guangdong, China Patentee after: LUVATA ALLTOP (ZHONGSHAN) Ltd. Address before: Espoo, Finland Patentee before: Luvata Espoo OY |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |