CN207832003U - Outer fin heat exchange pipe - Google Patents
Outer fin heat exchange pipe Download PDFInfo
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- CN207832003U CN207832003U CN201721824175.XU CN201721824175U CN207832003U CN 207832003 U CN207832003 U CN 207832003U CN 201721824175 U CN201721824175 U CN 201721824175U CN 207832003 U CN207832003 U CN 207832003U
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Abstract
The utility model provides a kind of outer fin heat exchange pipe, including：Heat-transfer pipe for outer fluid in separating tube；Outside heat exchange surface for extending heat-transfer pipe forms fluid channel, constrains adverse current of the extratubal fluid along heat-transfer pipe axial direction, while generating the outer fins set of flow-disturbing effect；Outer fin framing for the lateral flow for reducing heat-transfer pipe pipe lateral fluid；Heat transfer pipe outer wall is connected with multiple outer fins sets, and outer fins set is along heat-transfer pipe axial alignment, and outer fins set is equipped with hole, the axial parallel fluid channel of the hole formations of multiple outer fins sets and heat-transfer pipe；It is connected with outer fin framing around outer fins set.Complete countercurrent flow is realized, it can be achieved that small different transfer of heat between the inside and outside fluid of pipe of the outer fin heat exchange pipe of the utility model；For extratubal fluid in the micro-channel structure Jing Guo outer fins set, fin has sufficient flow-disturbing to act on, and improves convective heat-transfer coefficient；It can be used for manufacturing high-efficiency compact heat exchanger, be particularly suitable for gas gas heat-exchanging state.
Description
Technical field
The utility model is related to a kind of outer fin heat exchange pipe and its application methods, belong to high-efficiency compact heat exchanger technology neck
Domain.
Background technology
Heat exchanger is the key equipment in the various industrial productions such as electric power, chemical industry, vehicle, refrigeration, material and processing and manufacturing
Cost often occupies important share in entire construction investment, such as：In thermal power plant, boiler and other all kinds of auxiliary
Heat exchanger accounts for about 70% or so of power plant's gross investment；In petrochemical plant, heat exchanger investment can account for 40% of gross investment or more.
In recent years, the social development problem centered on the energy becomes increasingly conspicuous, and energy saving, raising efficiency improves energy conversion
Efficiency etc. becomes technical concerns focus.The especially fields such as generation of electricity by new energy, energy storage, cogeneration, distributed energy development is fast
Suddenly, in the application process of these technologies, various novel high-efficiency compact heat exchangers become active demand.Based on existing heat exchange
Device designing technique, and by the manufacturing technology level of continuous development and new manufacturing technology, the development space ten of new type heat exchanger
Divide wide.
In the new application field such as forth generation nuclear power, solar energy thermal-power-generating, naval vessel, followed as a result of novel Bretton
Ring generation mode, working medium is in gas or above-critical state always in circulation loop, need efficient gas and gas or gas with
The heat exchanger of supercritical fluid, meanwhile, for control cost and reduce volume, it is desirable that use compact heat exchanger.Due to working medium
Heat transfer system is much smaller than liquid, and in order to ensure that cycle efficieny, the duty requirements of heat exchanging device are very high.Existing compact heat exchange
Device, such as：Diffusion welding (DW) printed circuit sheet heat exchanger, cost are too high.
In the design of heat exchanger of all kinds of classics, heat exchanger tube is a kind of common exchange piece, in shell-and-tube heat exchanger, pipe
It is all widely used in the devices such as sheet heat exchanger, pipe wing heat exchanger, boiler, tube heater, still, conventional heat exchanger tube is uncomfortable
For making high-efficiency compact heat exchanger, need to be improved design.Heat transfer sheet can be extended by increasing fin in heat exchange pipe external surface
Face can increase heating surface and improve heat transfer coefficient, simultaneously to improve heat exchange property.Fin is the common strong of gas side surface
Change heat transfer type, including outer fin and inner fin.The reason of in view of processing and manufacturing technology and application aspect, outer fin heat exchange pipe
Using more convenient, cost is relatively low.The fin plane and pipe of common external finned tube are axially vertical, manage interior media flow direction
Vertical with media flow direction outside pipe, i.e., cross-current exchanges heat.For the small temperature difference (10 DEG C of ＜) heat-exchanging state, especially gas and gas
The small temperature difference of body exchanges heat, such as：Regenerator in Brayton cycle needs to realize using full countercurrent flow, at this moment, above-mentioned
External finned tube be just not suitable for, need the outer fin heat exchange pipe for developing novel countercurrent flow.
The outer fin heat exchange pipe for being presently used for full countercurrent flow in industry yet there are no open report.
Utility model content
The technical problems to be solved in the utility model be how the heat transfer of thermoexcell, realize and manage inside and outside media of both sides
Complete countercurrent flow, meets the requirement of small temperature difference heat-exchanging state, and effectively controls processing cost.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is to provide a kind of outer fin heat exchange pipe, special
Sign is, including：
For the fluid in separating tube and outside pipe, and realize by way of convection current, conduction the biography of the inside and outside fluid heat transferring of pipe
Heat pipe；
Outside heat exchange surface for extending heat-transfer pipe, forms fluid channel, and constraint extratubal fluid is inverse along heat-transfer pipe axial direction
Stream, while generating the outer fins set of flow-disturbing effect；
Outer fin framing for the lateral flow for reducing heat-transfer pipe pipe lateral fluid；
The heat transfer pipe outer wall is connected with multiple outer fins sets, and multiple outer fins sets are along heat-transfer pipe axial alignment；Outer fin
Group is equipped with hole, the axial parallel fluid channel of the hole formations of multiple outer fins sets and the heat-transfer pipe；Outer fins set periphery
It is connected with outer fin framing.
Preferably, spaced reciprocally along heat-transfer pipe axial alignment between the outer fins set.
Preferably, between the outer fins set not compartment of terrain along heat-transfer pipe axial alignment.
Preferably, the adjacent outer fins set is smaller than 5mm.
Preferably, the heat-transfer pipe is using the metal tube that can bear set point of temperature and pressure, including circular section and other sections
Facial canal or shape tube.
Preferably, the insert for enhanced heat exchange is equipped in the heat-transfer pipe.
Preferably, the outer fins set is sheet metal or strip surrounds the symmetrical structure that the heat-transfer pipe is arranged to, institute
It states sheet metal or strip surface and the heat-transfer pipe is axially parallel.
It is highly preferred that the width of the outer fins set sheet metal or strip is 3mm-20mm, thickness 0.2mm-1mm.
Preferably, the inside configuration of the outer fins set forms extension heat exchange surface and fluid channel；The outer fins set edge
The heat-transfer pipe axial segmentation is designed to different fin structures, extends heat exchange surface and fluid channel size.
Preferably, the outer fin framing is to surround the full packet that the outer fins set is arranged to by sheet metal or strip
Closed structure, the sheet metal or strip surface and the heat-transfer pipe are axially parallel.
It is highly preferred that the width of the outer fins set frame metal thin slice or strip is 3mm-20mm, thickness 0.5mm-
1.5mm。
Preferably, the shape of the outer fin framing be can periodic arrangement symmetrical structure.
Above-mentioned outer fin heat exchange pipe in use, the outer fin heat exchange pipe is processed into setting specification, and as portion
Part is installed in heat exchanger；Tube fluid is inputted from the input end of heat exchanger tube, and the outlet end of heat exchanger tube is flowed on the inside of heat exchanger tube,
Heat exchanger tube tube fluid carries out diabatic process with heat exchanger tube inner surface in flow process；Extratubal fluid outflows from the pipe of heat exchanger
Body input end inputs, and is flowed in opposite directions with tube fluid on the outside of heat exchanger tube, flows to the extratubal fluid outlet end of heat exchanger, flow over
Heat exchange tube outer fluid and heat exchanger tube outer surface, outer fins set and outer fin framing progress diabatic process in journey, heat exchanger tube,
Heat transfer process occurs between outer fins set and outer fin framing.
Preferably, the outer fin heat exchange pipe does not process outer fins set in fluid inlet and exit；The outer fin changes
The outer fins set of heat pipe and outer fin framing are in outer cover of heat exchanger body according to wall surface geometry in outer cover of heat exchanger body at wall surface
Shape processing is at fit structure.
Preferably, the tube fluid of the heat exchanger tube and extratubal fluid countercurrent flow；The outer fins set extends heat-transfer pipe
Outside heat exchange surface and flow-disturbing, form fluid channel, constraint extratubal fluid is by fluid channel along the axial adverse current of heat-transfer pipe.
Compared with prior art, outer fin heat exchange pipe provided by the utility model has the advantages that：
1, complete countercurrent flow is realized, it can be achieved that small different transfer of heat between the inside and outside fluid of pipe.
2, for extratubal fluid in the micro-channel structure Jing Guo outer fins set, fin has sufficient flow-disturbing to act on, and improves convection current
Heat transfer coefficient.
3, by arranging different outer fins set structures along heat exchanger tube axial segmentation, extended surface area and fluid channel can be changed
Size realizes variable cross-section design, optimizes the performance and manufacturing cost of heat exchanger.
4, it can be used for manufacturing high-efficiency compact heat exchanger, be particularly suitable for gas-gas heat-exchanging state.
Description of the drawings
Fig. 1 is the outer fin heat exchange pipe schematic front view that embodiment 1 provides；
Fig. 2 is the outer fin heat exchange pipe side view that embodiment 1 provides；
Fig. 3 is the outer fin heat exchange pipe side view that embodiment 2 provides；
Fig. 4 is the outer fin heat exchange pipe side view that embodiment 3 provides；
Reference sign：
1- heat-transfer pipes, the outer fins sets of 2-, the outer fin framings of 3-.
Specific implementation mode
With reference to specific embodiment, the utility model is expanded on further.
Embodiment 1
Fig. 1 is outer fin heat exchange pipe schematic front view provided in this embodiment, and the outer fin heat exchange pipe is by with lower part
Part forms：
Heat-transfer pipe 1 for two kinds of fluids in separating tube and outside pipe, and mainly realizes biography by way of convection current, conduction
Heat；
Outer fins set 2, the outside heat exchange surface for extending heat-transfer pipe 1 form fluid channel, and confinement tube lateral fluid is along biography
The axial adverse current of heat pipe 1, while generating flow-disturbing effect；
Outer fin framing 3, the lateral flow for reducing 1 pipe lateral fluid of heat-transfer pipe.
1 outer wall of heat-transfer pipe is connected with multiple outer fins sets 2, and multiple outer fins sets 2 are along 1 axial alignment of heat-transfer pipe；Outer fin
Group 2 is equipped with hole, hole formation and the axial parallel fluid channel of the heat-transfer pipe 1 of multiple outer fins sets 2；Outer fins set 2
It is peripheral to be connected with outer fin framing 3.
In conjunction with Fig. 2, outer fins set 2 is the hollow ellipse shape that sheet metal or strip are formed or similar oval frame structure.
Multiple outer fins sets 2 arrange that 2 surface of outer fins set and the heat-transfer pipe are axially parallel around heat-transfer pipe 1, and section is formed symmetrical
Petal-like structures.
The working method of above-mentioned outer fin heat exchange pipe is as follows：
Outer fin heat exchange pipe is processed into required specification according to the master-plan of heat exchanger, including the specification of heat-transfer pipe 1, outer
Fins set 2, in the specification of different zones, and is installed on heat exchanger in the specifications of different sections, outer fin framing 3 as component
In (such as：It is manufactured into the tube bank of shell-and-tube heat exchanger)；When needing smaller volume, greater compactness of heat exchanger, by above-mentioned heat transfer
The heat exchanger that pipe 1, outer fins set 2, the tube bank of outer fin framing 3 composition and other component form integrally can be directly by increasing material system
It makes (3D printing) technology and completes manufacture.
The tube fluid of every heat-transfer pipe 1 from the input end of heat-transfer pipe 1 (such as：The bobbin carriage import of shell-and-tube heat exchanger) it is defeated
Enter, flow to the outlet end of heat-transfer pipe 1 along the inside of heat-transfer pipe 1, the tube fluid of heat-transfer pipe 1 and heat-transfer pipe 1 is interior in flow process
Side surface carries out convection current diabatic process, the extratubal fluid of heat-transfer pipe 1 from the extratubal fluid input end of heat exchanger (such as：Shell-and-tube changes
The case entrances of hot device) input, along 1 outside of heat-transfer pipe and heat-transfer pipe1Tube fluid flow in opposite directions, flow to outside the pipe of heat exchanger
Fluid outlet；Extratubal fluid passes through from the fluid channel of outer fins set 2, and outer fins set 2 extends the outside heat exchange surface of heat-transfer pipe 1
And flow-disturbing, constraint extratubal fluid is by fluid channel along the axial adverse current of heat-transfer pipe；Extratubal fluid and 1 outside of heat-transfer pipe in flow process
Surface and outer fins set 2, outer fin framing 3 carry out diabatic process, heat exchanger tube 1, outer fins set 2 and outer fin framing 3 it
Between heat transfer process occurs.
Embodiment 2
The present embodiment is substantially the same with embodiment 1, difference lies in：Outer fins set 2 is that sheet metal or strip are formed
Hollow rectangle mount structure.Multiple outer fins sets 2 arrange that 2 surface of outer fins set is axially flat with the heat-transfer pipe around heat-transfer pipe 1
Row forms symmetrical structure, as shown in Figure 3.
Embodiment 3
The present embodiment is substantially the same with embodiment 1, difference lies in：Outer fins set 2 is made of sheet metal or strip, shape
At the sequentially connected strip structure of multiple hollow rings.Multiple outer fins sets 2 around heat-transfer pipe 1 arrange, 2 surface of outer fins set with
The heat-transfer pipe is axially parallel, forms symmetrical structure, as shown in Figure 4.
The above, the only preferred embodiment of the utility model, it is in any form and substantive not to the utility model
On limitation, it is noted that for those skilled in the art, in the premise for not departing from the utility model method
Under, several improvement and supplement can be also made, these are improved and supplement also should be regarded as the scope of protection of the utility model.It is all ripe
Professional and technical personnel is known, in the case where not departing from the spirit and scope of the utility model, when using disclosed above
Technology contents and the equivalent variations of a little variation, modification and evolution made, be the equivalent embodiment of the utility model；Together
When, all substantial technologicals according to the utility model to the variation, modification and evolution of any equivalent variations made by above-described embodiment,
In the range of still falling within the technical solution of the utility model.
Claims (10)
1. a kind of outer fin heat exchange pipe, which is characterized in that including：
For the fluid in separating tube and outside pipe, and realize by way of convection current, conduction the heat-transfer pipe of the inside and outside fluid heat transferring of pipe
(1)；
Outside heat exchange surface for extending heat-transfer pipe (1) forms fluid channel, and constraint extratubal fluid is along heat-transfer pipe (1) axial direction
Countercurrently, while the outer fins set (2) that flow-disturbing acts on is generated；
Outer fin framing (3) for the lateral flow for reducing heat-transfer pipe (1) pipe lateral fluid；
Heat-transfer pipe (1) outer wall is connected with multiple outer fins sets (2), and multiple outer fins sets (2) are axially arranged along heat-transfer pipe (1)
Row；Outer fins set (2) is equipped with hole, micro- parallel with the heat-transfer pipe (1) axial direction of the hole formations of multiple outer fins sets (2)
Runner；Outer fins set (2) periphery is connected with outer fin framing (3).
2. a kind of outer fin heat exchange pipe as described in claim 1, it is characterised in that：The heat-transfer pipe (1) is metal tube.
3. a kind of outer fin heat exchange pipe as described in claim 1, it is characterised in that：It is equipped with for strong in the heat-transfer pipe (1)
Change the insert of heat exchange.
4. a kind of outer fin heat exchange pipe as described in claim 1, it is characterised in that：Between the outer fins set (2) each other
Every ground along heat-transfer pipe (1) axial alignment.
5. a kind of outer fin heat exchange pipe as claimed in claim 4, it is characterised in that：The spacing of the adjacent outer fins set (2)
Less than 5mm.
6. a kind of outer fin heat exchange pipe as described in claim 1, it is characterised in that：It is not spaced between the outer fins set (2)
Ground is along heat-transfer pipe (1) axial alignment.
7. a kind of outer fin heat exchange pipe as described in claim 1, it is characterised in that：The outer fins set (2) is by metal foil
Piece or strip surround the symmetrical structure that the heat-transfer pipe (1) is arranged to, the sheet metal or strip surface and the heat-transfer pipe
(1) axial parallel.
8. a kind of outer fin heat exchange pipe as claimed in claim 1 or 7, it is characterised in that：The outer fins set (2) is along the biography
Heat pipe (1) axial segmentation is designed to different fin structures.
9. a kind of outer fin heat exchange pipe as described in claim 1, it is characterised in that：The outer fin framing (3) is by gold
Belong to thin slice or strip surrounds the full encirclement structure that the outer fins set (2) is arranged to, the sheet metal or strip surface and institute
It is axial parallel to state heat-transfer pipe (1).
10. a kind of outer fin heat exchange pipe as described in claim 1 or 9, it is characterised in that：The outer fin framing (3)
Shape be can periodic arrangement symmetrical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721824175.XU CN207832003U (en) | 2017-12-22 | 2017-12-22 | Outer fin heat exchange pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721824175.XU CN207832003U (en) | 2017-12-22 | 2017-12-22 | Outer fin heat exchange pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207832003U true CN207832003U (en) | 2018-09-07 |
Family
ID=63389000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721824175.XU Active CN207832003U (en) | 2017-12-22 | 2017-12-22 | Outer fin heat exchange pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207832003U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976101A (en) * | 2017-12-22 | 2018-05-01 | 上海发电设备成套设计研究院有限责任公司 | A kind of outer fin heat exchange pipe and its application method |
| CN110617730A (en) * | 2019-08-06 | 2019-12-27 | 杭州电子科技大学 | Heat exchanger based on fin duct jet flow and heat exchange method thereof |
| CN110726027A (en) * | 2019-10-29 | 2020-01-24 | 葛军 | Pipeline preheating equipment |
-
2017
- 2017-12-22 CN CN201721824175.XU patent/CN207832003U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976101A (en) * | 2017-12-22 | 2018-05-01 | 上海发电设备成套设计研究院有限责任公司 | A kind of outer fin heat exchange pipe and its application method |
| WO2019120278A1 (en) * | 2017-12-22 | 2019-06-27 | 上海发电设备成套设计研究院有限责任公司 | Outer fin heat exchange tube and use method therefor |
| US11118847B2 (en) | 2017-12-22 | 2021-09-14 | Shanghai Power Equipment Research Institute Co., Ltd. | Finned heat exchanger tube |
| CN107976101B (en) * | 2017-12-22 | 2023-07-14 | 上海发电设备成套设计研究院有限责任公司 | Using method of outer fin heat exchange tube |
| CN110617730A (en) * | 2019-08-06 | 2019-12-27 | 杭州电子科技大学 | Heat exchanger based on fin duct jet flow and heat exchange method thereof |
| CN110726027A (en) * | 2019-10-29 | 2020-01-24 | 葛军 | Pipeline preheating equipment |
| CN110726027B (en) * | 2019-10-29 | 2021-06-29 | 葛军 | Pipeline preheating equipment |
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