CN202002533U - Heat transfer pipe, falling film evaporator heat transfer pipe and falling film evaporator - Google Patents
Heat transfer pipe, falling film evaporator heat transfer pipe and falling film evaporator Download PDFInfo
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- CN202002533U CN202002533U CN 201020601219 CN201020601219U CN202002533U CN 202002533 U CN202002533 U CN 202002533U CN 201020601219 CN201020601219 CN 201020601219 CN 201020601219 U CN201020601219 U CN 201020601219U CN 202002533 U CN202002533 U CN 202002533U
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- transfer pipe
- heat
- heat transfer
- falling film
- film evaporator
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Abstract
The utility model provides a heat transfer pipe, which comprises a plurality of fins projected out of the outer surface of the pipe wall of the heat transfer pipe. The heat transfer pipe has good liquid discharge performance, good liquid film perturbation promotion performance and sufficient artificial core gasification performance and also simultaneously has good moisture performance, so liquid can be fast and uniformly paved on the surface, the heat transfer quantity and the evaporation quantity are greatly improved, the heat transfer area can be further reduced, and the cost is reduced. The utility model also provides a falling film evaporator heat transfer pipe and a falling film evaporator, and the falling film evaporator heat transfer pipe and the falling film evaporator comprise the heat transfer pipe.
Description
Technical field
The utility model relates to a kind of heat-transfer pipe, falling film evaporator heat-transfer pipe and falling film evaporator.
Background technology
The energy is the important substance basis of economic growth and social progress, with three big pillars of material, information formation modernized society.The energy is not only the power of the national economic development, and is the index of weighing overall national strength and living standards of the people and national civilized development degree.Industries such as oil, chemical industry, power, metallurgy, refrigeration are the pillar industries of China, also are the conventional industries of high energy consumption, and its energy consumption accounts for 40% of total energy consumption.In these high energy consumption industry, the height of heat exchanger heat-transfer performance directly affects the energy consumption level of industrial system.In various dissimilar heat exchangers, shell and tube exchanger is simple because of making, cost is low, applicability is strong and advantage such as convenient operating maintenance is used the most general.Yet the shell and tube exchanger of China's industrial system use at present is to adopt traditional segmental baffle plain tube structure more than 90%.This type of heat exchanger volume is huge, and the material consumption is many, and the energy consumption of procedures system is also high, demands urgently improving.Exploring new enhanced heat transfer mechanism and develop augmentation of heat transfer technology efficiently, is the some effective that improves heat exchanger heat transfer usefulness, and this remains the hot research problem in current thermal conduction study field.
Evaporation is common operating process in the above-mentioned high energy consumption industry, and the heat transfer of raising evaporimeter and evaporation efficiency are for reducing equipment investment and energy-saving and cost-reducing all significant.The falling film evaporation technology belongs to thin film evaporation, because its wall liquid film undergoes phase transition and the ripple effect of liquid film, thereby has higher heat transfer coefficient and in aspect extensive uses such as desalinization, petrochemical industry, refrigeration, usings energy source.Yet the heat-transfer pipe of these falling film evaporators uses plain tube or low ribbed pipe etc. substantially at present.In the evaporimeter actual motion, in the low heat loads scope, the surperficial liquid film of plain tube or low ribbed pipe etc. is difficult to seethe with excitement, thereby must the special boiling enhanced pipe of employing.More to various existing intensify heat transfer pipes both at home and abroad at present in the heat and mass transfer mechanism research of falling film evaporation process.Research contents comprises: flow pattern, the outer liquid of pipe stream and produce the mobile influence of gaseous exchange and the influence of various structure and operating parameter heat exchanging etc. outside film forming feature, the pipe between pipe.Particularly aspect augmentation of heat transfer research, the foreign scholar has carried out experimental study to R134a, R123 etc. at the heat transfer property of Turbo-CII pipe, GEWA-SC pipe, Finned pipe and the falling film evaporation of Turbo-B pipe.The result shows, the contrast plain tube, and the augmentation of heat transfer performance obviously improves, but still has tangible weak point.
Because intensify heat transfer pipe is all single at condensation or boiling heat transfer process exploitation at present, the heat-transfer pipe of enforcing condensation has good discharge opeing and promotes the performance of liquid film disturbance, but can not provide sufficient artificial gasification core, the heat-transfer pipe of enhanced water evaporation is on the contrary again, and the reinforcement of Heat Transfer in Evaporating Falling Film mass transfer needs the comprehensive raising of two aspect performances.In addition, the heat-transfer pipe that is used for falling film evaporator also needs to have good wettability, and liquid is evenly spread out rapidly from the teeth outwards.
The utility model content
The utility model aims to provide a kind of heat-transfer pipe, can not have good discharge opeing concurrently to solve existing heat-transfer pipe, promotes the liquid film disturbance and the problem of the performance of sufficient artificial gasification core is provided.
For achieving the above object, the utility model provides a kind of heat-transfer pipe, comprises a plurality of fins that protrude on the heat-transfer pipe outer surface of tube wall, forms the passage of fluid flow between a plurality of fins and the heat-transfer pipe outer surface of tube wall.
Further, form the minitype channel of the U type of fluid flow between a plurality of fins and the heat-transfer pipe outer surface of tube wall.
Further, the structure of a plurality of fins on the heat-transfer pipe outer surface of tube wall is identical.
Further, the fin on the heat-transfer pipe outer surface of tube wall along the heat-transfer pipe axial direction in the shape of a spiral shape be distributed on the heat-transfer pipe outer surface of tube wall.
Further, the fin on the heat-transfer pipe outer surface of tube wall is evenly distributed on the heat-transfer pipe outer surface of tube wall.
Further, fin is a umbrella, and fin comprises: be arranged on the wing root and the apex of the wing that links to each other with the wing root on the outer surface of tube wall, the wing root is a column, and the apex of the wing is a ball-crown body.
Further, the end face of the apex of the wing is circular parabolic surface.
Further, apex of the wing end face circular radius is 0.4-1.0mm, and adjacent apex of the wing end face distance of center circle is from being 0.8-2.0mm, and the height of fin is 0.4-2.0mm.
Further, heat-transfer pipe is the heat-transfer pipe of falling film evaporator.
The utility model also provides a kind of falling film evaporator heat-transfer pipe and falling film evaporator, and this falling film evaporator heat-transfer pipe and falling film evaporator comprise foregoing heat-transfer pipe.
Owing to adopted the structure that forms the fluid flow passage between a plurality of fin heat transfer pipe outer surface of tube wall that protrude on the heat-transfer pipe outer surface of tube wall, improved the heat and mass transfer performance of evaporimeter, increased artificial activation core, compare with common intensify heat transfer pipe, can improve Heat Transfer in Evaporating Falling Film coefficient 20%-50%.
In addition, because heat-transfer pipe has adopted the umbrella fin, destroyed the stability in liquid heat transfer boundary layer, the thickness of attenuate fluid heat transferring detention layer, heat-transfer pipe also has good wettability simultaneously, liquid is evenly spread out rapidly from the teeth outwards, promoted the even distribution of surperficial liquid film, thereby improve the Heat Transfer in Evaporating Falling Film performance of umbrella fin heat transfer pipe.Heat transfer tube configuration of the present utility model is simple, low cost of manufacture.The umbrella fin heat transfer pipe adopts the mechanical stitch one-shot forming, does not have the cutting to metal in the process, the stock utilization height.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 has schematically shown the structure according to the surface of heat-transfer pipe of the present utility model; And
Fig. 2 has schematically shown the axial cutaway view according to heat-transfer pipe of the present utility model.
The specific embodiment
Describe the utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As shown in Figure 1, heat-transfer pipe comprises a plurality of fins 1 that protrude on heat-transfer pipe tube wall 5 outer surfaces, form the fluid flow passage between a plurality of fins 1 and heat-transfer pipe tube wall 5 outer surfaces, for example form the crisscross miniature tunnel 4 that is the U type between umbrella fin end face and the heat-transfer pipe wall, a plurality of fin 1 is processed to form by mechanical stitch, for evaporation of liquid provides sufficient artificial activation core, improved boiling heat transfer coefficient.
Preferably, form the minitype channel 4 of the U type of fluid flow between a plurality of fins 1 and heat-transfer pipe tube wall 5 outer surfaces, passage also can be other shape, and passage 4 has improved boiling heat transfer coefficient for evaporation of liquid provides sufficient artificial activation core; Simultaneously, the space between the umbrella shape fin 1 helps liquid and in time replenishes evaporation in the admission passage 4, and this gas-liquid has further strengthened the disturbance of liquid film in the umbrella fin heat transfer pipe surface channel 4 inside and outside processes of sucking.
Preferably, the structure of a plurality of fins 1 on heat-transfer pipe tube wall 5 outer surfaces is identical, convenient processing and manufacture, and the structure of fin 1 also can be different certainly.
Preferably, the fin 1 on heat-transfer pipe tube wall 5 outer surfaces along the heat-transfer pipe axial direction in the shape of a spiral shape be distributed on heat-transfer pipe tube wall 5 outer surfaces.Increased the area of heat exchange, heat transfer efficiency is higher, and spiral distribution makes easy to process simultaneously.
Preferably, the fin 1 on heat-transfer pipe tube wall 5 outer surfaces is evenly distributed on heat-transfer pipe tube wall 5 outer surfaces.
Preferably, fin 1 is a umbrella, and fin 1 comprises: be arranged on the wing root 3 and the apex of the wing 2 that links to each other with wing root 3 on tube wall 5 outer surfaces, wing root 3 is a column, and the apex of the wing 2 is a ball-crown body.Liquid can evenly spread out on the apex of the wing 2 ball-crown body surfaces rapidly under capillary effect.Therefore, heat output and evaporation capacity are greatly improved, also can further reduce heat transfer area, reduce cost.
Preferably, the end face of the apex of the wing 2 is circular parabolic surface.Tube surface is the parabolic surface with continuous fracture, its viscous flow bottom can produce periodic disturbance and separated flow when fluid flow through, destroyed the stability in fluid heat transferring boundary layer, the thickness of attenuate fluid heat transferring detention layer has improved the convection transfer rate of umbrella fin 1 heat-transfer pipe.
Preferably, the apex of the wing 2 end face circular radius are 0.4-1.0mm, and the adjacent apex of the wing 2 end face distance of center circle are from being 0.8-2.0mm, and the height of fin 1 is 0.4-2.0mm.Such heat-transfer pipe has improved boiling heat transfer coefficient for evaporation of liquid provides sufficient artificial activation core; Simultaneously, the space between the fin 1 helps the timely additional evaporation in the tunnel that enters of liquid.
Preferably, heat-transfer pipe is the heat-transfer pipe of falling film evaporator.Heat-transfer pipe is greatly improved the heat output of falling film evaporator and evaporation capacity, also can further reduce heat transfer area.
The utility model also provides a kind of falling film evaporator, comprises foregoing heat-transfer pipe.The heat output and the evaporation capacity of this falling film evaporator are greatly improved, and also can further reduce heat transfer area, reduce cost.
The utility model also is applied to the heat and mass equipment of the evaporation and heat-exchange process of falling film type, can improve the heat output and the evaporation capacity of heat and mass equipment greatly.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. a heat-transfer pipe is characterized in that, comprises a plurality of fins that protrude on the described heat-transfer pipe outer surface of tube wall, forms the passage of fluid flow between described a plurality of fins and the described heat-transfer pipe outer surface of tube wall.
2. heat-transfer pipe according to claim 1 is characterized in that, forms the minitype channel (4) of the U type of fluid flow between described a plurality of fins and the described heat-transfer pipe outer surface of tube wall.
3. heat-transfer pipe according to claim 1 is characterized in that the structure of described a plurality of fins is identical.
4. heat-transfer pipe according to claim 1 is characterized in that, described a plurality of fins along the heat-transfer pipe axial direction in the shape of a spiral shape be distributed on the described heat-transfer pipe outer surface of tube wall.
5. heat-transfer pipe according to claim 1 is characterized in that, described fin is evenly distributed on the described heat-transfer pipe outer surface of tube wall.
6. according to each described heat-transfer pipe in the claim 1 to 5, it is characterized in that described fin is a umbrella, described fin comprises: be arranged on the wing root and the apex of the wing that links to each other with described wing root on the outer surface of tube wall, described wing root is a column, and the described apex of the wing is a ball-crown body.
7. heat-transfer pipe according to claim 6 is characterized in that, the end face of the described apex of the wing is circular parabolic surface.
8. heat-transfer pipe according to claim 6 is characterized in that, described apex of the wing end face circular radius is 0.4-1.0mm, and described adjacent apex of the wing end face distance of center circle is from being 0.8-2.0mm, and the height of described fin is 0.4-2.0mm.
9. a falling film evaporator heat-transfer pipe is characterized in that, comprises each described heat-transfer pipe in the claim 1 to 8.
10. a falling film evaporator is characterized in that, comprises each described heat-transfer pipe in the claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020601219 CN202002533U (en) | 2010-11-10 | 2010-11-10 | Heat transfer pipe, falling film evaporator heat transfer pipe and falling film evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020601219 CN202002533U (en) | 2010-11-10 | 2010-11-10 | Heat transfer pipe, falling film evaporator heat transfer pipe and falling film evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202002533U true CN202002533U (en) | 2011-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020601219 Expired - Lifetime CN202002533U (en) | 2010-11-10 | 2010-11-10 | Heat transfer pipe, falling film evaporator heat transfer pipe and falling film evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202002533U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466424A (en) * | 2010-11-10 | 2012-05-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Heat transfer pipe, falling film evaporator, and falling film evaporator heat transfer pipe |
| CN108592683A (en) * | 2018-05-02 | 2018-09-28 | 珠海格力电器股份有限公司 | Heat exchange tube, heat exchanger and heat pump unit |
-
2010
- 2010-11-10 CN CN 201020601219 patent/CN202002533U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466424A (en) * | 2010-11-10 | 2012-05-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Heat transfer pipe, falling film evaporator, and falling film evaporator heat transfer pipe |
| CN108592683A (en) * | 2018-05-02 | 2018-09-28 | 珠海格力电器股份有限公司 | Heat exchange tube, heat exchanger and heat pump unit |
| CN108592683B (en) * | 2018-05-02 | 2020-12-08 | 珠海格力电器股份有限公司 | Heat exchange tube, heat exchanger and heat pump unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111005 |
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| CX01 | Expiry of patent term |