CN204373484U - Non-centrosymmetry H type fin tube structure and finned tube heat-exchanging tube bundle thereof - Google Patents
Non-centrosymmetry H type fin tube structure and finned tube heat-exchanging tube bundle thereof Download PDFInfo
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- CN204373484U CN204373484U CN201420819072.4U CN201420819072U CN204373484U CN 204373484 U CN204373484 U CN 204373484U CN 201420819072 U CN201420819072 U CN 201420819072U CN 204373484 U CN204373484 U CN 204373484U
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- fin
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- base tube
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Abstract
A kind of non-centrosymmetry H type fin tube structure and finned tube heat-exchanging tube bundle thereof, finned tube comprises base tube portion and fin part, base tube portion comprises at least one foundation pipe, fin part comprises some fins set be axially welded on preset space length along base tube on the outer wall of base tube, each fins set comprises the quadrangle fin that two panels is positioned at least one foundation pipe both sides, every sheet fin is connected with base tube outer wall by the groove of inner side, two panels fin is in the same plane, leave the gap being more than or equal to zero each other, or in connection status; Quadrangle fin is positioned at windward side area and is greater than and is positioned at leeward side area; The heat exchange property being positioned at windward side due to fin is better than the heat exchange property of leeward side, and windward side part is than the more difficult generation flow separation of leeward side part, eddy current and fouling phenomenon; Therefore the utility model overall heat exchange performance is improved, windward side can not produce fouling phenomenon, and the dust stratification total amount of leeward side reduces, and is not only suitable for the flue gas enhanced heat exchange of fuel-firing gas-firing, is more suitable for the enhanced heat exchange containing grey air-flow flue gas.
Description
Technical field
The utility model relates to a kind of H type finned tube, is specifically related to a kind of non-centrosymmetry H type fin tube structure and finned tube heat-exchanging tube bundle thereof, in the various types of heat transmission equipment being applicable to the industries such as the energy, oil, chemical industry, smelting and firing equipment.
Background technology
The energy is the important foundation of economy and social progress, along with the lasting of AND ENERGY RESOURCES CONSUMPTION IN CHINA is risen, many societies and environmental problem highlight day by day, and energy-saving and emission-reduction have become a long-range policy and the strategic decision of China's economy and social development, are also very urgent tasks.
Heat exchanger is the important composition parts of the power-equipments such as boiler.Solve the problem such as enhanced heat exchange, dust stratification wearing and tearing of heat exchanger, for improve the utilization ratio of the energy, heat exchanger service life most important.
Adopting fin to increase heat exchange area, is one of effective ways of enhanced heat exchange.Thus, people develop H type finned tube.
H type finned tube, also known as H type extended surface tube, the basis of square finned tube developing, is the finned tube that the rectangle steel disc with circular arc in the middle of two panels is welded together to form with light pipe symmetrically, because its front shape is similar to letter " H ", therefore be called H type finned tube.The wing coefficient of H type finned tube is higher, heat transfer property is better, and have stronger from deashing ability, therefore the structure of heat transmission equipment can effectively be reduced, reduce dust stratification wearing and tearing, reduce flow resistance, improve exchange capability of heat, be widely used in waste heat boiler, station boiler and various industrial heat exchange device.
In traditional H type finned tube, each fins set is symmetrical about connected base tube axis centre, and it is all identical with area with the shape of leeward side that fin is positioned at windward side.
In actual production practice, enter in the flue gas of heat exchanger and often carry solid particulate matter tiny in a large number, be called flying dust.When flue gas flows in H type finned-tube bundle, obvious flow separation and recirculating zone can be there is at finned tube leeward side.The contact area of windward side flue gas stream and base tube and fin is greater than leeward side, and the leeward side fin heat exchange property that flow separation easily occurs is lower, easily produces fouling phenomenon.Because the thermal conductivity factor of dust stratification is very low, along with the increase of dust stratification degree, the heat exchange property of finned tube worsens further, and the performance driving economy of heat exchanger significantly reduces, and even also there will be the serious consequences such as heat transmission equipment blocking.
Summary of the invention
In order to solve above-mentioned prior art Problems existing, the purpose of this utility model is to provide a kind of non-centrosymmetry H type fin tube structure and finned tube heat-exchanging tube bundle thereof, improve the heat transfer property of H type finned tube, alleviate the fouling phenomenon of H type finned tube, reduce the material consumption of heat transmission equipment.
In order to achieve the above object, the utility model have employed following technical scheme:
A kind of non-centrosymmetry H type fin tube structure, comprise base tube portion 1 and fin part 2, described base tube portion 1 comprises at least one foundation pipe, described fin part 2 is some fins set be axially connected to preset space length along base tube on the outer wall of base tube, wherein each fins set comprises the quadrangle fin that two panels is positioned at least one foundation pipe both sides, the groove matched with the outer wall of base tube is provided with inside every sheet fin, fin is connected with base tube outer wall by groove, two panels fin is in on the same plane of base tube axes normal, leave the gap being more than or equal to zero each other, or in connection status, the entirety that described fins set and base tube form is H type along the radial section of base tube, when base tube quantity is one, get the base tube axis by being connected with fins set, and be interface perpendicular to the plane that flue gas carrys out flow path direction, quadrangle fin is divided into windward side part and leeward side part, when base tube quantity be two and above time, getting one with each base tube axis being parallel and with the equal straight line of head and the tail two base tube axial line distance is boost line, crossing this boost line, to get the plane carrying out flow path direction perpendicular to flue gas be interface, quadrangle fin is divided into windward side part and leeward side part, the fin area of described windward side part is greater than the fin area of leeward side part.
Described base tube shape is round shape, any one in ellipticity and flat tube shape.
Describedly often to be parallel to each other between adjacent two fins set.
Gap between the two panels fin that described fins set comprises is less than base tube external diameter.
The shape of described fin is rectangle, parallelogram, trapezoidal or irregular quadrilateral, wherein parallelogram, trapezoidal or irregular quadrilateral fin Metal Distribution more level off to base tube, fin efficiency is higher, when fin shape is parallelogram, trapezoidal or irregular quadrilateral, fin minor face and flue gas carry out flow path direction 45 ° ~ 90 ° range.
Connected mode between described fins set and base tube is flash-butt welding or soldering.
The base tube number that described and each fins set is connected shows as the form of non-centrosymmetry double H-type finned tube when being 2.
The described fin area of the windward side part of fin of often organizing with the scope of the ratio n of the fin area of leeward side part is: 1<n<2.
A kind of finned tube heat-exchanging tube bundle, be made up of many non-centrosymmetry H type fin tube structures described above, the arrangement mode of described many non-centrosymmetry H type fin tube structures is in-line arrangement, is staggered in arrangement, and any one in unequal-interval layout.
Compared to the prior art comparatively, the utility model has following advantage:
In non-centrosymmetry H type fin tube structure provided by the utility model, fin is greater than its area in leeward side part at the area of windward side part.When flue gas flows in H type finned-tube bundle, obvious flow separation and recirculating zone can be there is at finned tube leeward side.The contact area of windward side flue gas stream and base tube and fin is greater than leeward side, and the leeward side fin heat exchange property that flow separation easily occurs is lower, easily produces fouling phenomenon.Due in non-centrosymmetry H type fin tube structure provided by the utility model, fin is greater than its area in leeward side part at the area of windward side part.Therefore it is identical and when using same base tube bundle in fin area, the non-centrosymmetry H type fin tube structure that the utility model provides, relative to traditional centrosymmetric H type finned tube, larger fin area is had to be positioned at heat exchange property good and not easily produce the windward side of dust stratification.The heat exchange property of overall heat exchanger is improved, and dust stratification amount reduce.
For the heat transmission equipment that total heat exchange amount is fixing, the non-centrosymmetry H type fin tube structure adopting the utility model to provide replaces traditional H type finned tube, volume and the steel consumption of equipment can be greatly reduced, and the manufacturing process difficulty of non-centrosymmetrical novel H type finned tube and traditional H type finned tube similar, therefore the total manufacturing cost of heat transmission equipment also corresponding decline.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment one.
Fig. 2 is the front view of the utility model embodiment one.
Fig. 3 is the top view of the utility model embodiment one.
Fig. 4 is the left view of the utility model embodiment one.
Fig. 5 is the structural representation of the utility model embodiment two.
Fig. 6 is the front view of the utility model embodiment two.
Fig. 7 is the structural representation of the utility model embodiment three.
Fig. 8 is the front view of the utility model embodiment three.
Fig. 9 is the structural representation of the utility model embodiment four.
Figure 10 is the front view of the utility model embodiment four.
Figure 11 is the structural representation of the utility model embodiment five.
Figure 12 is the front view of the utility model embodiment five.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment one
Fig. 1 is the structural representation of the utility model embodiment one, and the shape of fin is rectangle, and base tube quantity is one.
As shown in Figure 1, non-centrosymmetry H type fin tube structure comprises base tube portion 1 and fin part 2.The heat-exchange working medium of flowing is had in base tube portion 1.Fin part 2 comprises multiple fins set be made up of left quadrangle fin 2a and right quadrangle fin 2b, and fins set is parallel to each other and with a determining deviation along on the outer wall being disposed axially in base tube portion 1 in base tube portion 1.
Fig. 2 is the front view of the utility model embodiment one.
Get by base tube 1 axis, and be interface perpendicular to the plane Ω that flue gas carrys out flow path direction, left quadrangle fin 2a is divided into left windward side part 2aa and left leeward side part 2ab, right quadrangle fin 2b is divided into right windward side part 2ba and right leeward side part 2bb, wherein the area of left windward side part 2aa is greater than the area of left leeward side part 2ab, and the area of right windward side part 2ba is greater than the area of right leeward side part 2bb.The area sum of left windward side part 2aa and right windward side part 2ba is denoted as S
a, the area sum of left leeward side part 2ab and right windward side part 2bb is denoted as S
b, then S
awith S
bthe scope of ratio n be: 1<n<2.
Fig. 3 is the top view of the utility model embodiment one.
Fig. 4 is the left view of the utility model embodiment one, and visible fin is longer than the length of leeward side part in the length of windward side part.
It is the situation of rectangle that non-centrosymmetry H type fin tube structure involved by the utility model is not merely defined in fin in embodiment one, fin shape can also be the arbitrary quadrilaterals such as trapezoidal, parallelogram, but fin must be greater than at the area of windward side part the area that it is positioned at leeward side part.The utility model embodiment four shown in the utility model embodiment three, Fig. 9,10 shown in the utility model embodiment two, Fig. 7,8 as shown in Fig. 5,6.
Embodiment two
Fig. 5 is the structural representation of the utility model embodiment two, and fin shape is trapezoidal, and Fig. 6 is the front view of the utility model embodiment two.Fin minor face and flue gas carry out flow path direction 45 ° ~ 90 ° range.
Embodiment three
Fig. 7 is the structural representation of the utility model embodiment three, and fin shape is right-angled trapezium, and Fig. 8 is the front view of the utility model embodiment three.Fin is positioned at windward side minor face and flue gas carrys out flow path direction 45 ° ~ 90 ° range.
Embodiment four
Fig. 9 is the structural representation of the utility model embodiment four, and fin shape is parallelogram, and Figure 10 is the front view of the utility model embodiment four.Fin minor face and flue gas carry out flow path direction 45 ° ~ 90 ° range.
Embodiment five
In non-centrosymmetry H type fin tube structure involved by the utility model, and often organize the base tube number that fin is connected and can also be greater than 1, when for twice, show as the form of double H-type finned tube.Figure 11 is the structural representation of non-centrosymmetry double H-type finned tube in the utility model embodiment five.
As shown in figure 11, non-centrosymmetry double H-type finned tube comprises base tube portion 1 and fin part 2.Base tube portion 1 comprises the first base tube 1a and the second base tube 1b, has the heat-exchange working medium of flowing in the first base tube 1a and the second base tube 1b.Fin part 2 comprises multiple fins set be made up of left quadrangle fin 2a and right quadrangle fin 2b, and fins set is parallel to each other and with a determining deviation along on the outer wall being disposed axially in base tube portion 1 in base tube portion 1.
Figure 12 is the front view of the utility model embodiment five.
Get and base tube the one 1a axis and the second base tube 1b axis being parallel, and the straight line α equal with the second base tube 1b axial line distance with the first base tube 1a axis.Crossing straight line α, to get the plane Ω carrying out flow path direction perpendicular to flue gas be interface, left quadrangle fin 2a is divided into left windward side part 2aa and left leeward side part 2ab, right quadrangle fin 2b is divided into right windward side part 2ba and right leeward side part 2bb, wherein the area of left windward side part 2aa is greater than the area of left leeward side part 2ab, and the area of right windward side part 2ba is greater than the area of right leeward side part 2bb.The scope of the area of right windward side part 2ba and the area ratio n of right leeward side part 2bb is: 1<n<2.
Equally, the fin shape of non-centrosymmetry double H-type finned tube also can be trapezoidal, parallelogram or irregular quadrilateral, and quadrangle fin minor face and flue gas carry out flow path direction 45 ° ~ 90 ° range.
Claims (9)
1. a non-centrosymmetry H type fin tube structure, it is characterized in that: comprise base tube portion (1) and fin part (2), described base tube portion (1) comprises at least one foundation pipe, described fin part (2) is some fins set be axially connected to preset space length along base tube on the outer wall of base tube, wherein each fins set comprises the quadrangle fin that two panels is positioned at least one foundation pipe both sides, the groove matched with the outer wall of base tube is provided with inside every sheet fin, fin is connected with base tube outer wall by groove, two panels fin is in on the same plane of base tube axes normal, leave the gap being more than or equal to zero each other, or in connection status, the entirety that described fins set and base tube form is H type along the radial section of base tube, when base tube quantity is one, get the base tube axis by being connected with fins set, and be interface perpendicular to the plane that flue gas carrys out flow path direction, quadrangle fin is divided into windward side part and leeward side part, when base tube quantity be two and above time, getting one with each base tube axis being parallel and with the equal straight line of head and the tail two base tube axial line distance is boost line, crossing this boost line, to get the plane carrying out flow path direction perpendicular to flue gas be interface, quadrangle fin is divided into windward side part and leeward side part, the fin area of described windward side part is greater than the fin area of leeward side part.
2. non-centrosymmetry H type fin tube structure according to claim 1, is characterized in that: described base tube shape is round shape, any one in ellipticity and flat tube shape.
3. non-centrosymmetry H type fin tube structure according to claim 1, is characterized in that: be describedly often parallel to each other between adjacent two fins set.
4. non-centrosymmetry H type fin tube structure according to claim 1, is characterized in that: the gap between the two panels fin that described fins set comprises is less than base tube external diameter.
5. non-centrosymmetry H type fin tube structure according to claim 1, it is characterized in that: the shape of described fin is rectangle, parallelogram, trapezoidal or irregular quadrilateral, wherein parallelogram, trapezoidal or irregular quadrilateral fin Metal Distribution more level off to base tube, fin efficiency is higher, when fin shape is parallelogram, trapezoidal or irregular quadrilateral, fin minor face and flue gas carry out flow path direction 45 ° ~ 90 ° range.
6. non-centrosymmetry H type fin tube structure according to claim 1, is characterized in that: the connected mode between described fins set and base tube is flash-butt welding or soldering.
7. non-centrosymmetry H type fin tube structure according to claim 1, is characterized in that: the form showing as non-centrosymmetry double H-type finned tube when the base tube number that described and each fins set is connected is 2.
8. non-centrosymmetry H type fin tube structure according to claim 1, is characterized in that: the described fin area of the windward side part of fin of often organizing with the scope of the ratio n of the fin area of leeward side part is: 1<n<2.
9. a finned tube heat-exchanging tube bundle, it is characterized in that: be made up of many non-centrosymmetry H type fin tube structures many described in any one of claim 1 to 8, the arrangement mode of described many non-centrosymmetry H type fin tube structures is in-line arrangement, be staggered in arrangement, and any one in unequal-interval layout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420819072.4U CN204373484U (en) | 2014-12-19 | 2014-12-19 | Non-centrosymmetry H type fin tube structure and finned tube heat-exchanging tube bundle thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420819072.4U CN204373484U (en) | 2014-12-19 | 2014-12-19 | Non-centrosymmetry H type fin tube structure and finned tube heat-exchanging tube bundle thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204373484U true CN204373484U (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420819072.4U Withdrawn - After Issue CN204373484U (en) | 2014-12-19 | 2014-12-19 | Non-centrosymmetry H type fin tube structure and finned tube heat-exchanging tube bundle thereof |
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| Country | Link |
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| CN (1) | CN204373484U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501639A (en) * | 2014-12-19 | 2015-04-08 | 西安交通大学 | Non-centrosymmetrical H-shaped finned tube and finned tube heat exchange tube bundle |
| CN107167017A (en) * | 2017-05-02 | 2017-09-15 | 哈尔滨理工大学 | A kind of H type ribbed pipe type economizers of new structure |
-
2014
- 2014-12-19 CN CN201420819072.4U patent/CN204373484U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501639A (en) * | 2014-12-19 | 2015-04-08 | 西安交通大学 | Non-centrosymmetrical H-shaped finned tube and finned tube heat exchange tube bundle |
| CN107167017A (en) * | 2017-05-02 | 2017-09-15 | 哈尔滨理工大学 | A kind of H type ribbed pipe type economizers of new structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150603 Effective date of abandoning: 20160504 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |