CN109506511A - A kind of structure-improved H-type finned tube - Google Patents
A kind of structure-improved H-type finned tube Download PDFInfo
- Publication number
- CN109506511A CN109506511A CN201811335798.XA CN201811335798A CN109506511A CN 109506511 A CN109506511 A CN 109506511A CN 201811335798 A CN201811335798 A CN 201811335798A CN 109506511 A CN109506511 A CN 109506511A
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- China
- Prior art keywords
- fin
- base tube
- improved
- winglet
- finned tube
- 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.)
- Pending
Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000003546 flue gas Substances 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 5
- 238000011161 development Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 2
- 230000002146 bilateral effect Effects 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 11
- 238000013517 stratification Methods 0.000 description 9
- 238000012546 transfer Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000003416 augmentation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A kind of structure-improved H-type finned tube, including a round base tube, with the fins set for being connected to base tube outer wall axially arranged along base tube, fins set includes two panels bilateral symmetry but different rectangular fins before and after flow of flue gas direction, every fin is connect by base tube side inboard groove with base tube outer wall by it, two panels fin is located at perpendicular in the same level of base tube axial direction, there is certain interval between each other, fin windward side or so respectively has a ball convex, leeward side respectively has a rectangular winglet eddy generator, the convex presence of ball can be effectively reduced crushing and prevent from forming big whirlpool turbulent flow in flow process, when fluid flow through ball it is convex nearby when, vortex in flow field can be siphoned away by the pit at the convex back side of ball, prevent bigger vortex from being formed, it can reduce resistance, and when flue gas flows through rectangular winglet eddy generator, fluid, which is formed, to be vortexed, generate disturbance , boundary layer can not sustainable development, to achieve the purpose that enhanced heat exchange.
Description
Technical field
The invention belongs to the technical field of heat exchangers that fume afterheat utilizes, and are suitable for the energy, power, refrigeration, chemical industry, smelting
The heat exchange equipment and heating equipment of the industries such as refining, petroleum, and in particular to a kind of structure-improved H-type finned tube.
Background technique
With the sustained and rapid development of China's economy, energy supply anxiety problem becomes increasingly conspicuous, and energy conservation, emission reduction, consumption reduction are
Inevitable requirement as the development of China's economy and society.Heat exchanger as power, petroleum, chemical industry, refrigeration, metallurgy or even aviation,
The important component of the industrial process such as rocket, its safe and highly efficient operation are significant.In various heat exchange equipments, pass through wing
It is common augmentation of heat transfer mode that piece, which increases heat exchange area,.
Increase heat exchange area in the big side reasonable Arrangement fin of heat exchanger thermal resistance, reduce thermal resistance, is that heat exchanger reinforcing is changed
One of the mode of heat, H-type finned tube is exactly typical example.By the optimization enhanced heat exchange of H-type finned tube, reduction flow resistance, subtract
The safe and highly efficient operation of no accretion of ash abrasion heat exchanging device is of great significance.
H-type finned tube, also known as H-type fin.It symmetrically welds together the steel disc for having circular arc among two panels with light pipe
It is formed, front shape is gained the name due to as alphabetical " H ".Research and practice have shown that H-type finned tube can dramatically increase heat exchange area,
Increase flue gas flow area, reduces cigarette speed, reduce dust stratification and abrasion.
Flue gas often carries a certain amount of flying dust, and when flue gas flows outside H-type finned-tube bundle can generate in leeward side
Air-flow separation and reflux, the region are known as being vortexed stagnation region.And the local space being vortexed the every two betweens of fins of stagnation region does not almost have
There is gas disturbance, the gas flowing of the local space is similar to plane flowing, and ash particle is difficult to flow between different fins, therefore
Easily form dust stratification.
Although H-type finned tube has good anti-dust stratification ability and abrasionproof performance, under containing grey air-flow, due to fluid itself
Viscous effect and adverse pressure gradient presence, flowing necessarily separate, and finned tube leeward side formed be vortexed stagnation region, from
And make constantly to accumulate containing the ash particle in grey air-flow in leeward side, a large amount of dust stratifications in part are caused, finned tube heat transfer effect is seriously affected
The safe and highly efficient operation of rate and heat exchanger.Traditional H-type fin has its intrinsic drawback, as quadrangle is right angle outside fins set
It will increase flow resistance；Fin windward side is consistent with leeward side gap-ratio, width is high unanimously makes windward side equal with heat exchange area
It will cause heat transfer deterioration, reduce heat exchange efficiency；Backflow phenomenon makes leeward side be easy to produce dust stratification, and dust stratification thermal coefficient is low to be caused
Heat exchange further deteriorates.
By the structural analysis to H-type finned tube, discovery when by H-type finned tube, is further exacerbated by containing grey air-flow
The formation of dust stratification.Therefore, by taking necessary structure optimization, reduce vortex stagnation region area to reduce dust stratification, be a kind of
Effective method.
Summary of the invention
To solve the problems, such as that above-mentioned industrial practical application, the present invention propose a kind of structure-improved H-type finned tube,
To improve the heat exchange property of H-type finned tube, its flow resistance is reduced, reduces flowing crushing, and mitigate the dust stratification and mill of finned tube
Damage.
In order to achieve the above objectives, the invention adopts the following technical scheme:
A kind of structure-improved H-type finned tube, including base tube and fins set；Fins set includes one group of two complete phase of size
There are the arc groove coincideing with base tube outer wall in same fin, fin inside；It is connected to outside base tube with what is axially arranged along base tube
Multiple parallel fins groups of wall；Base tube has certain length, and several parallel fins groups are connected to base along what base tube was axially arranged
Pipe outer wall；It is characterized by: taking comprising base tube axis and being divided into fin for interface perpendicular to the plane in flow of flue gas direction
Two parts, upstream are windward side, and downstream is leeward side；Fin surface windward side has a ball male structure, fin surface leeward side
With a winglet eddy generator.
Compared with prior art, present invention has the advantage that
A kind of structure-improved H-type finned tube proposed by the present invention, fin windward side or so respectively have a ball convex, and leeward side is each
There is a rectangular winglet eddy generator.The convex presence of ball can be effectively reduced crushing and prevent from forming big whirlpool turbulent flow in flow process.
When fluid flow through ball it is convex nearby when, the vortex in flow field can be siphoned away by the pit at the convex back side of ball, prevent bigger vortex from being formed, can
To reduce resistance.And when flue gas flows through rectangular winglet eddy generator, fluid, which is formed, to be vortexed, and generates disturbance, and boundary layer can not be held
Supervention exhibition, to achieve the purpose that enhanced heat exchange.This also means that the heat exchange equipment certain for heat exchange amount, takes the present invention
The structure of proposition can save steel consumption, reduce cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of a pair of of fins set and its institute's linker tube portion in the present invention；
Fig. 2 is the front view of a pair of of fins set and its institute's linker tube portion in the present invention；
Fig. 3 is the rearview of a pair of of fins set and its institute's linker tube portion in the present invention；
Fig. 4 is the side view of a pair of of fins set and its institute's linker tube portion in the present invention；
Wherein: 1 windward side；2 leeward sides.
Specific embodiment
The present invention will be described in more detail with reference to the accompanying drawings and detailed description.Following instance is conducive to corresponding skill
Art personnel are best understood from the present invention, but the invention is not limited in any way.And it will be noted that the skill of this research field
For art personnel, improvement can be made on the basis of present inventive concept, this belongs to protection scope of the present invention.
Fig. 1-4 is structural schematic diagram of the invention, includes a round base tube and a pair of of fin.
As shown, a kind of structure-improved H-type finned tube includes base tube and fins set.Substrate tube has fluid interchange work
Matter, generally liquid, and capacity of heat transmission is greater than finned outer fluid.Fins set includes one group of two identical wing of size
Piece, it is regularly arranged by certain pitch, there is the arc groove coincideing with base tube outer wall on the inside of fin, arc groove is located in fin
Between at axis, fin is symmetrical about arc groove.With the multiple parallel wings for being connected to base tube outer wall axially arranged along base tube
Piece group.Base tube has certain length, and several parallel fins groups are connected to base tube outer wall along what base tube was axially arranged.
Symmetrical H-type fin tube structure centered on the finned tube, or be non-centrosymmetrical H-type fin tube structure；When
When for non-centrosymmetrical H-type fin tube structure, arc groove inclined side setting, fin on fin is non-right about arc groove
Claim.If taking the face constituted using base tube axis and gas direction of flow as the plane of reference, which is divided into windward side for finned tube
It should meet lateral area windward at asymmetric arrangement fin with leeward side two parts and be greater than leeward lateral area, and two-part face
Product ratio should be between 1~2.
Fin uses rectangular plate structure.Relative to heat exchange flue gas stream direction, fin both ends are respectively that fin surface is met
Wind side and fin surface leeward side.
The surface shape of fin can be rectangle, parallelogram, trapezoidal or irregular quadrilateral.
It takes comprising base tube axis and fin is divided into two parts, upstream for interface perpendicular to the plane in flow of flue gas direction
For windward side, downstream is leeward side.
Fin surface windward side setting ball is convex, and ball projection is at fin width direction outside 1/3.Its height and diameter ratio
For (0.2~0.6): 1, recommend 0.4:1.Fin surface be equipped with ball it is convex can with rough air, prevent Development of Boundary Layer reduce pressure
Decreasing loss loses the particle reduced in flue gas and deposits in heat exchange surface, is conducive to heat exchanger long-time efficient operation.
Ball is convex to be improved to cylindrical structure.The shape of the base tube straight tube is cylindrical, oval tubulose, flat tube
In any one.
Rectangular winglet eddy generator is located at fin surface leeward side, is located at fin width direction 1/2.Winglet long side length
It is (0.2~0.4) with the ratio between base tube outer diameter: 1, recommend 0.3:1；The ratio between short side and long side are (0.3~0.6): 1, recommend 0.5:
1.The spacing ratio of winglet height and the parallel fins of setting is 0.5~1.0.
The angle of attack of rectangular winglet direction and gas direction of flow is 10 °~80 °.
Rectangular winglet and ball projection are placed in the same surface of fin.
Rectangular winglet can be improved to triangle winglet.
Rectangle through slot is machined on the fin of rectangular winglet root, rectangle penetrates through slot length and is equal to the long side length of rectangular winglet
Degree, perforation groove area approximately double winglet area of section, and rectangle through slot direction is consistent with rectangular winglet direction.The shape of through slot
Shape can be rectangle, arc or circle；For rectangular channel, using the long side of slot as fluting reference direction, slot direction and gas
The angle of attack of direction of flow is 10 °~80 °；Arc groove is come using secant where slot circular arc as fluting reference direction with gas
Direction is flowed into 10 °~80 °.
Through slot is capable of forming flowing and boundary layer is interrupted, and restarts boundary layer flow, so that boundary layer is thinned, part
The coefficient of heat transfer increases, and achievees the purpose that augmentation of heat transfer.When flue gas flows through fin, ball is convex, through slot and winglet generate fluid
Disturbance, to achieve the purpose that enhanced heat exchange.Especially fluid flows through rectangular winglet eddy generator, flow field heat-transfer pipe tail portion stagnation
Area significantly reduces, and flow disturbance enhancing, boundary layer is destroyed when stagnation region fluid enters main flow area, therefore the heat-exchange performance of finned tube
It can be strengthened.And the disturbance of tail portion stagnation region, purging effect is also increased, so that flying dust deposition is obviously reduced.
Above-mentioned H-type finned tube may be directly applied to flue gas waste heat recovery technique, can also be made as modular construction, answer
For occasions such as power plant's superheater, economizers.
Finally, it should be noted that being not intended to restrict the invention the foregoing is merely explanation of the invention, although to this hair
It is bright to be described in detail, it for those skilled in the art, still can be to aforementioned documented technical solution
It modifies or equivalent replacement of some of the technical features.All within the spirits and principles of the present invention, made
Any modification, equivalent substitution, improvement and etc. should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of structure-improved H-type finned tube, including base tube and fins set；Fins set includes that one group of two size is identical
Fin, have the arc groove coincideing with base tube outer wall on the inside of fin；Base tube outer wall is connected to what is axially arranged along base tube
Multiple parallel fins groups；Base tube has certain length, and several parallel fins groups are connected to base tube along what base tube was axially arranged
Outer wall；It is characterized by: taking comprising base tube axis and fin being divided into two for interface perpendicular to the plane in flow of flue gas direction
Part, upstream are windward side, and downstream is leeward side；Fin surface windward side has a ball male structure, fin surface leeward side tool
There is a winglet eddy generator.
2. a kind of structure-improved H-type finned tube according to claim 1, it is characterised in that: the surface shape of fin can
For rectangle, parallelogram, trapezoidal or irregular quadrilateral.
3. a kind of structure-improved H-type finned tube according to claim 1, it is characterised in that: on the fin of winglet root
It is machined with through slot.
4. a kind of structure-improved H-type finned tube according to claim 1, it is characterised in that: symmetrical centered on finned tube
H-type fin tube structure, or be non-centrosymmetrical H-type fin tube structure；Centered on when symmetrical H-type fin tube structure,
Arc groove is located at fin medial axis, and fin is symmetrical about arc groove；When for non-centrosymmetrical H-type fin tube structure
When, arc groove inclined side setting, fin on fin is asymmetric about arc groove.
5. a kind of structure-improved H-type finned tube according to claim 1, it is characterised in that: ball projection is in fin width
At 1/3 on the outside of direction, height is (0.2~0.6) with diameter ratio: 1.
6. a kind of structure-improved H-type finned tube according to claim 1, it is characterised in that: winglet eddy generator is located at
At fin width direction 1/2, the ratio between long side length and base tube outer diameter are (0.2~0.4): 1；The ratio between short side and long side are (0.3
~0.6): 1, it is highly 0.5~1.0 with the spacing ratio of the parallel fins of setting.
7. a kind of structure-improved H-type finned tube according to claim 1, it is characterised in that: winglet direction and gas come
The angle of attack for flowing direction is 10 °~80 °.
8. a kind of structure-improved H-type finned tube according to claim 1, it is characterised in that: winglet is placed in ball projection
The same surface of fin.
9. a kind of structure-improved H-type finned tube according to claim 1, it is characterised in that: winglet uses rectangular winglet
Or triangle winglet.
10. a kind of structure-improved H-type finned tube according to claim 3, it is characterised in that: the shape of through slot is square
Shape, arc or circle；For rectangular channel, using slot rectangle long side as fluting reference direction, fluting direction and gas incoming flow side
To the angle of attack be 10 °~80 °；Arc or circular trough are come using secant where slot circular arc as fluting reference direction with gas
Direction is flowed into 10 °~80 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811335798.XA CN109506511A (en) | 2018-11-11 | 2018-11-11 | A kind of structure-improved H-type finned tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811335798.XA CN109506511A (en) | 2018-11-11 | 2018-11-11 | A kind of structure-improved H-type finned tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109506511A true CN109506511A (en) | 2019-03-22 |
Family
ID=65748091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811335798.XA Pending CN109506511A (en) | 2018-11-11 | 2018-11-11 | A kind of structure-improved H-type finned tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109506511A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030182979A1 (en) * | 2002-03-28 | 2003-10-02 | Kabushiki Kaisha Kobe Seiko Sho(Kobe Steel, Ltd.) | Method for producing seamless tube with groved inner surface |
| CN103954161A (en) * | 2014-04-28 | 2014-07-30 | 西安交通大学 | Combined bionic anti-abrasion H-shaped fin elliptical flue gas heat exchange tube |
| CN106546119A (en) * | 2015-09-21 | 2017-03-29 | 杭州三花微通道换热器有限公司 | Fin and the heat exchanger with it |
| CN108362156A (en) * | 2018-04-09 | 2018-08-03 | 西安交通大学 | A kind of H-type finned tube that turbulator rod is combined with triangle eddy generator |
| CN108592682A (en) * | 2018-04-09 | 2018-09-28 | 西安交通大学 | A kind of geometry modified H-type finned tube |
| CN210036388U (en) * | 2018-11-11 | 2020-02-07 | 大唐(北京)能源管理有限公司 | Structure improved H-shaped finned tube |
-
2018
- 2018-11-11 CN CN201811335798.XA patent/CN109506511A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030182979A1 (en) * | 2002-03-28 | 2003-10-02 | Kabushiki Kaisha Kobe Seiko Sho(Kobe Steel, Ltd.) | Method for producing seamless tube with groved inner surface |
| CN103954161A (en) * | 2014-04-28 | 2014-07-30 | 西安交通大学 | Combined bionic anti-abrasion H-shaped fin elliptical flue gas heat exchange tube |
| CN106546119A (en) * | 2015-09-21 | 2017-03-29 | 杭州三花微通道换热器有限公司 | Fin and the heat exchanger with it |
| CN108362156A (en) * | 2018-04-09 | 2018-08-03 | 西安交通大学 | A kind of H-type finned tube that turbulator rod is combined with triangle eddy generator |
| CN108592682A (en) * | 2018-04-09 | 2018-09-28 | 西安交通大学 | A kind of geometry modified H-type finned tube |
| CN210036388U (en) * | 2018-11-11 | 2020-02-07 | 大唐(北京)能源管理有限公司 | Structure improved H-shaped finned tube |
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Address after: 100097 Floor 1-12, 120 Zizhuyuan Road, Haidian District, Beijing Applicant after: DATANG (BEIJING) ENERGY MANAGEMENT Co.,Ltd. Applicant after: DATANG ENVIRONMENT INDUSTRY GROUP Co.,Ltd. Applicant after: CHINA DATANG Corp.,Ltd. Address before: 100097 Floor 1-12, 120 Zizhuyuan Road, Haidian District, Beijing Applicant before: DATANG (BEIJING) ENERGY MANAGEMENT Co.,Ltd. Applicant before: DATANG ENVIRONMENT INDUSTRY GROUP Co.,Ltd. Applicant before: CHINA DATANG Corp.,Ltd. |