CN105674784A - H-shaped heat exchange pipe - Google Patents
H-shaped heat exchange pipe Download PDFInfo
- Publication number
- CN105674784A CN105674784A CN201610110622.9A CN201610110622A CN105674784A CN 105674784 A CN105674784 A CN 105674784A CN 201610110622 A CN201610110622 A CN 201610110622A CN 105674784 A CN105674784 A CN 105674784A
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- Prior art keywords
- base tube
- fin
- tube
- opening
- fins
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/04—Tubular elements of cross-section which is non-circular polygonal, e.g. rectangular
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides an H-shaped heat exchange pipe which comprises a base pipe and multiple sets of fins. The multiple sets of fins are arranged on the base pipe at intervals in the axis direction of the base pipe, and each set of fins is parallel to the cross section of the base pipe. Each set of fins includes two fins, wherein the two fins are symmetric about the face where the axis of the base pipe is located. The cross section of the base pipe is rectangular. The fins are rectangular. A first opening and a second opening are formed between every two fins, wherein the first opening and the second opening are symmetric about the face where the axis of the base pipe is located. A finned pipe is provided so that the function of heat transfer strengthening can be met, and meanwhile dust accumulation can be relieved to a great extent.
Description
Technical field
The invention belongs to field of heat exchangers, particularly relate to a kind of heat exchanger component-H type heat exchanger tube.
Background technology
Along with the high speed development of modern social economy, the mankind are increasing to the demand of the energy. But the traditional energy storage levels such as coal, oil, natural gas constantly reduce, day by day in short supply, cause rising steadily of price, the problem of environmental pollution that conventional fossil fuel causes simultaneously is also further serious, the raising of these development that all significantly limit society and human life quality. Therefore to the saving energy, heat transfer enhancement technology is at development, and finned tube is also commonly used in field of heat exchange. Fin in currently available technology is all one and is integrally provided on base tube, although serve the function of augmentation of heat transfer hence with finned tube, but under certain operating conditions, the gas converting heat aspect of such as flue gas heat exchange, also impurity, or collection ash phenomenon occurs, cause that the coefficient of heat transfer declines, therefore the present invention is directed to the situation that currently available technology occurs, it is proposed that a kind of new heat exchanger tube.
Summary of the invention
It is desirable to provide the finned tube of a kind of energy-conserving and environment-protective, both can meet the function of augmentation of heat transfer, collection ash can also be reduced simultaneously to a great extent.
To achieve these goals, technical scheme is as follows: a kind of H type finned tube, described H type finned tube includes base tube and fin, described fin is many groups, described many group fins are spaced apart and arranged on described base tube along the axis direction of described base tube, and described often group fin is parallel to the cross section of described base tube, described often group fin includes two fins, two described fins are symmetrical along the face at the axis place of base tube, it is characterized in that, the shape of cross section of described base tube is rectangle, described fin shape is rectangle, the first opening and the second opening is formed between said two fin, described first opening and the second opening are symmetrical along the face at the axis place of base tube.
As preferably, the cross section of described base tube is square.
As preferably, described first opening is positioned at the top of described base tube.
As preferably, described second opening is positioned at the bottommost of described base tube pipe.
As preferably, described substrate tube arranges inner fin, and described inner fin connects the diagonal angle of rectangle, and described inner fin is divided into multiple passage aisle by internal for base tube 1, arranges intercommunicating pore, so that adjacent passage aisle communicates with each other on inner fin.
As preferably, described base tube cross section is square, and described intercommunicating pore is circular, and the described foursquare interior length of side is L, the radius r of described intercommunicating pore, and the distance between the intercommunicating pore center of circle adjacent on described same fin is l, meets following relation:
L/L*10=a*ln (r/L*10)+b;
Wherein ln is logarithmic function, a, and b is parameter, 1.45 < a < 1.62,2.89 <b < 3.10;
0.33<l/L<0.39;
0.13<r/L<0.18;
30mm < L < 140mm;
5mm<r<19mm。
As preferably, 14mm < l < 43mm.
Compared with prior art, present invention have the advantage that:
1) provide the square tube heat exchanger tube of a kind of Novel structure, by arranging the first opening and the second opening on heat exchanger tube, reduce collection ash.
2) it is set to rectangle by heat exchanger tube base tube and fin, it is achieved the synergy of heat exchanger tube base tube and fin shape, augmentation of heat transfer
3) by offering intercommunicating pore at substrate tube, while ensureing to improve heat exchange efficiency, the flow resistance in base tube is decreased.
4) present invention passes through test of many times, when ensureing that heat exchange amount is maximum and flow resistance meets requirement, obtains an optimum heat exchanger tube optimum results, and has been verified by test, thus demonstrating the accuracy of result.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of H type finned tube of the present invention;
Fig. 2 is the side-looking structural representation of H type finned tube of the present invention;
Fig. 3 is base tube cross-sectional structure schematic diagram of the present invention;
Fig. 4 is inner fin intercommunicating pore distribution schematic diagram of the present invention;
Fig. 5 is inner fin intercommunicating pore stagger arrangement distribution schematic diagram of the present invention;
Fig. 6 is square dimensions schematic diagram in base tube of the present invention.
Accompanying drawing labelling is as follows:
1 base tube, 2 first openings, 3 second openings, 4 first fins, 5 second fins, 6 inner fins, 7 intercommunicating pores, 8 passage aisles.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
The invention discloses a kind of finned tube, described finned tube includes base tube and the transverse fin being arranged on base tube thereof, and the cross section of described base tube is rectangle, and described fin shape is rectangle.
By arranging rectangular fin and rectangle base tube so that base tube is identical with fin shape so that heat exchange field reaches to work in coordination with, the distribution arrangement of heat, transmission quantity reach circumferential essentially identical, thus further augmentation of heat transfer.
As preferably, Fig. 1 illustrates the cross sectional representation of a kind of H type finned tube. as shown in Figure 1, H type finned tube includes base tube 1 and fin 4, 5, described fin 4, 5 are many groups, described many group fins 4, 5 are spaced apart and arranged on described base tube 1 along the axis direction (namely on the centerline direction of base tube) of described base tube 1, and described often group fin 4, 5 cross sections being parallel to described base tube 1, described often group fin includes the first fin 4 and the second fin 5, the first described fin 4 and the second fin 5 are along first symmetry at the axis place of base tube 1, the shape of cross section of described base tube 1 is rectangle, the first described fin 4 and the second fin 5 are shaped as rectangle, said two fin 4, the first opening 2 and the second opening 3 is formed between 5, described first opening 2 and the second opening 3 are along second symmetry at the axis place of base tube 1.
As preferably, described first and second vertical.
By arranging the first opening 2 and the second opening 3, it is possible to reduce the collection ash on heat exchanger tube. Simultaneously as the shape of base tube and fin is all rectangle, it is possible to reach shape and adapt, further augmentation of heat transfer.
As preferably, the width W of described first opening 2 and the second opening 3 is 6-8mm.
As preferably, the cross section of described base tube 1 is square.
As preferably, as it is shown in figure 1, described first opening 2 is positioned at the top of described base tube. Described second opening is positioned at the bottommost of described base tube pipe. Namely the first opening 2 and the second opening 3 are symmetrical above and below along the horizontal plane at base tube 1 axis place.
Fig. 2 illustrates axial direction (namely on length direction) multiple (many groups) fin 4,5 interval along base tube 1 and arranges.
As preferably, along the flow direction of base tube fluid, the adjacent fins group continuous minimizing spaced apart on the axial direction of base tube 1. Because the fluid in base tube constantly absorbs heat along flow direction, and temperature is more and more higher, and heat absorption capacity also can be deteriorated accordingly, therefore by arranging the distance change between fins set, it is possible to farthest absorb heat. Accordingly, exothermic process there is also this problem.
As preferably, along the flow direction of base tube fluid, the amplitude of the adjacent fins group continuous minimizing spaced apart on the axial direction of base tube 1 constantly increases. Being found through experiments, this kind arranges the heat exchange amount that can improve about 10%.
Spacing between adjacent fins group is 5-20mm, spacing herein be with the relative face of adjacent fins group between distance.
As preferably, described base tube 1 is internal arranges inner fin 6, and described inner fin 6 connects the rectangular diagonal angle of base tube 1, as shown in Figure 3. Described inner fin 6 is divided into multiple passage aisle 8 by internal for base tube 1, arranges intercommunicating pore 7, so that adjacent passage aisle 8 communicates with each other on inner fin.
By arranging inner fin 6, it is divided into multiple passage aisle 8, further augmentation of heat transfer by internal for base tube 1, but the pressure of corresponding fluid flowing increases. By arranging intercommunicating pore 7, ensure the connection between adjacent passage aisle 8, so that fluid in the big passage aisle of pressure can to flowing in the little passage aisle of contiguous pressure, solve each problem that small flow channels pressure is uneven and local pressure is excessive of inside of condensation end, thus having promoted the fluid abundant flowing in heat exchanger channels, simultaneously by the setting of intercommunicating pore 7, also reduce the pressure within base tube 1, improve heat exchange efficiency, also improve the service life of base tube 1 simultaneously.
Preferably, the flow direction of fluid in base tube 1, the area of described intercommunicating pore 7 constantly increases.
Described intercommunicating pore 7 is circular configuration, and the flow direction of fluid in base tube 1, the radius of described circular configuration constantly increases.
Because the flow direction of fluid in base tube 1, fluid in base tube 1 constantly absorbs heat and even evaporates, hence in so that the pressure of base tube 1 constantly increases, and because the existence of intercommunicating pore 7 so that the pressure distribution within base tube 1 is more and more uniform, and therefore the area of intercommunicating pore needs very big, constantly become big by arranging, so that when ensureing inside heat pipe pressure all even pressure, increase heat exchange area by the change of intercommunicating pore area, thus improving heat exchange efficiency.
Preferably, the flow direction of fluid in base tube 1, the amplitude that the area of described intercommunicating pore 7 constantly increases is continuously increased. By such setting, also it is consistent with the Changing Pattern of flowing pressure, reduces while flow resistance further, improve heat exchange efficiency. By such setting, by being test it is found that the heat exchange efficiency of raising about 8%, resistance is held essentially constant simultaneously.
Preferably, the flow direction of fluid in base tube 1, the distributed quantity of intercommunicating pore 7 gets more and more, it is preferred that, the amplitude that described intercommunicating pore quantity constantly increases is continuously increased.
Reduce principle by the Distribution Principle of above-mentioned quantity with area identical, compared with identical with intercommunicating pore quantity, reduce circulation area by distributed number.
Finding in actual experiment, the area of intercommunicating pore 7 can not be too small, and too small words can cause the increase of flow resistance, thus causing weakening of heat exchange, the area of intercommunicating pore 7 can not be excessive, and area is excessive, can cause the minimizing of heat exchange area, thus reducing heat transfer effect. Equally, the cross-sectional area of base tube 1 can not be excessive, and the excessive heat exchanger tube causing being distributed in tube plate structure unit length is very few, again result in heat transfer effect to be deteriorated, base tube 1 flow area can not be too small, and too small meeting causes that flow resistance increases, thus causing that heat transfer effect is deteriorated. Therefore the distance between intercommunicating pore 7 with base tube 1 cross-sectional area and adjacent intercommunicating pore 7 thereof must is fulfilled for certain requirement.
Therefore, the present invention is thousands of the numerical simulations by multiple various sizes of heat exchanger tubes and test data, under meeting industrial requirements pressure-bearing situation (below 10MPa), when realizing maximum heat exchange amount, the dimensionally-optimised relation of the best base tube summed up.
The present invention is base tube cross section is carry out under square dimensionally-optimised.
The described foursquare interior length of side (namely the foursquare outer length of side deducts wall thickness) is L, the radius r of described intercommunicating pore, and the distance between intercommunicating pore adjacent on described same fin is l, meets following relation:
L/L*10=a*ln (r/L*10)+b;
Wherein ln is logarithmic function, a, and b is parameter, 1.45 < a < 1.62,2.89 <b < 3.10;
0.33<l/L<0.39;
0.13<r/L<0.18;
30mm < L < 140mm;
5mm<r<19mm。
Wherein, l is equal to the distance between adjacent intercommunicating pore 7 center of circle. Distance between the intercommunicating pore center of circle that left and right as shown in Figure 4,5 is adjacent and neighbouring.
It is preferred that, 14mm < l < 43mm.
Preferably, along with the increase of r/L, described a, b increases.
As preferably, a=1.55, b=3.03.
As preferably, as shown in Figure 4,5, each inner fin arranging multiple rows of intercommunicating pore 7, as it is shown in figure 5, the plurality of intercommunicating pore 7 is staggered arrangement structure. Connect structure by staggered arrangement, it is possible to improve heat exchange further, reduce pressure.
As preferably, the material of base tube is albronze, and the mass percent of the component of described albronze is as follows: 3.7%Cr, 3.3%Ag, 2.2%Mn, 1.25%Zr, 1.23%Ce, 1.25%Ti, 2.46%Si, all the other are Cu, Al, and the ratio of Cu, Al is (8.53-10.23): 1.12.
The manufacture method of albronze is: adopt vacuum metallurgy melting, and argon for protecting pouring becomes circle base, through 820 DEG C of Homogenization Treatments, at 640 DEG C, adopts and is hot extruded into bar, then then through after 565 DEG C of solution hardening, carry out artificial aging process at 230 DEG C.
After tested, above-mentioned alloy has significantly high heat conductivity, and heat conductivity is more than 250W/ (m*k).
By increasing the ratio of copper in albronze, it is greatly increased the heat resistance of alloy, also carries heavy alloyed anti-corrosion property energy simultaneously.
Base tube and fin can be integrally manufactured, it is also possible to split manufacture, base tube and fin can also be different materials, for instance base tube is above-mentioned albronze, and fin then can adopt other alloys, and wherein other alloys are composed as follows:
The following Ni30% of mass percent;Cr20%; Al6%; C0.03%; B0.016%; Co2%; Ti3%; Nb0.1%; La0.2%; Ce0.2%; Fe surplus.
The manufacture method of alloy is: becomes ingot by composition smelting and pouring according to electrothermal alloy in vaccum sensitive stove, then at 1200 DEG C-900 DEG C, alloy pig forge hot is become bar, be rolled into dish material at 1200 DEG C-900 DEG C, then become the silk material of different size in room temperature cold-drawn.
After tested, above-mentioned alloy has significantly high heat conductivity.
As preferably, described base tube 1 and finned outer apply anticorrosive coat.
As preferably, described anticorrosive coat is to be generated by anticorrosive paint, and anticorrosive paint is become to be grouped into by following: zinc flake 8.3%, and aluminium oxide is 8%, boric acid is 7.3%, and acrylic acid is 0.7%, and wetting dispersing agent is 0.4%, thickening agent is 0.15%, and defoamer is 0.23%, the water of surplus.
A kind of method preparing above-mentioned water-based anticorrosive paint, the method is implemented according to following steps,
A, by coating gross mass percentage ratio, weigh respectively a certain amount of water, 0.4% wetting dispersing agent and 0.23% defoamer, then admixed together, it is sufficiently stirred for so as to dissolve and make coating mixed liquor A 1, in mixed liquor A 1, add the flake metal powder of account for coating gross mass 8.3% again, stir and make coating mixed liquor A 2;
B, by coating gross mass percentage ratio, weigh 7.3% boric acid, form mixed liquor, join the water of 20%～40% fully dissolves and make mineral acid mixed liquid B 1, adding the oxidate powder of 8% again in mixed liquid B 1, stirring makes mineral acid mixed liquid B 2 to without precipitation;
C, by coating gross mass percentage ratio, weigh the acrylic acid of 0.7%, join in the water of 5%～15%, stir and make reducing agent mixed liquor C;
D, by coating gross mass percentage ratio, weigh the thickening agent hydroxyethyl cellulose of 0.15%, join in the water of 2.5%～15%, stirring to dissolve be translucent shape and without gel occur namely stop stirring making thickening agent mixed liquor D;
E, the mineral acid mixed liquid B 2 of preparation is joined in coating mixed liquor A 2, it is subsequently adding the 1/5～1/2 of reducing agent mixed liquor C amount of preparation, add thickening agent mixed liquor D while stirring, add the water of surplus, continue stirring 30～90 minutes, until coating mixed liquor uniformity soilless sticking granule, finally add remaining reducing agent mixed liquor C, it is stirred for 10～40 minutes, to obtain final product.
This kind of coating is applied over finned tube surface by spraying, brushing, dip-coating, dries 10～60 minutes for 80 ± 10 DEG C, and 280 ± 40 DEG C solidify sintering 30～60 minutes, form good anti-corrosion coating.
Described wetting dispersing agent is the SA-20 in peregal series, and described thickening agent selects hydroxyethyl cellulose; Tributyl phosphate selected by described defoamer.
Although the present invention discloses as above with preferred embodiment, but the present invention is not limited to this. Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (7)
1. a H type finned tube, described H type finned tube includes base tube and fin, described fin is many groups, described many group fins are spaced apart and arranged on described base tube along the axis direction of described base tube, and described often group fin is parallel to the cross section of described base tube, described often group fin includes two fins, two described fins are symmetrical along the face at the axis place of base tube, it is characterized in that, the shape of cross section of described base tube is rectangle, described fin shape is rectangle, the first opening and the second opening is formed between said two fin, described first opening and the second opening are symmetrical along the face at the axis place of base tube.
2. H type finned tube as claimed in claim 1, the cross section of described base tube is square.
3. the H type finned tube described in claim 1, it is characterised in that described first opening is positioned at the top of described base tube.
4. the H type finned tube described in claim 1, it is characterised in that described second opening is positioned at the bottommost of described base tube pipe.
5. H type finned tube as claimed in claim 1, described substrate tube arranges inner fin, and described inner fin connects the diagonal angle of rectangle, and described inner fin is divided into multiple passage aisle by internal for base tube 1, inner fin arranges intercommunicating pore, so that adjacent passage aisle communicates with each other.
6. H type finned tube as claimed in claim 5, described base tube cross section is square, and described intercommunicating pore is circular, the described foursquare interior length of side is L, the radius r of described intercommunicating pore, the distance between the intercommunicating pore center of circle adjacent on described same fin is l, meets following relation:
L/L*10=a*ln (r/L*10)+b;
Wherein ln is logarithmic function, a, and b is parameter, 1.45 < a < 1.62,2.89 <b < 3.10;
0.33<l/L<0.39;
0.13<r/L<0.18;
30mm < L < 140mm;
5mm<r<19mm。
7. H type finned tube as claimed in claim 6,14mm < l < 43mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610110622.9A CN105674784B (en) | 2016-02-29 | 2016-02-29 | H-shaped heat exchange pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610110622.9A CN105674784B (en) | 2016-02-29 | 2016-02-29 | H-shaped heat exchange pipe |
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| Publication Number | Publication Date |
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| CN105674784A true CN105674784A (en) | 2016-06-15 |
| CN105674784B CN105674784B (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610110622.9A Active CN105674784B (en) | 2016-02-29 | 2016-02-29 | H-shaped heat exchange pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106558350A (en) * | 2016-11-25 | 2017-04-05 | 中国核动力研究设计院 | A kind of inner fin heat exchanger |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1677044A (en) * | 2005-03-17 | 2005-10-05 | 西安交通大学 | Forced heat exchange tube |
| CN201034430Y (en) * | 2007-07-20 | 2008-03-12 | 哈尔滨鑫北源电站设备制造有限公司 | Power boiler H-shaped coal economizer |
| CN201514143U (en) * | 2009-03-23 | 2010-06-23 | 张家港市华东电站锅炉部件制造有限公司 | Fin of H-shaped fin heat exchange tube |
| JP2014020580A (en) * | 2012-07-12 | 2014-02-03 | Panasonic Corp | Fin tube type heat exchanger |
-
2016
- 2016-02-29 CN CN201610110622.9A patent/CN105674784B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1677044A (en) * | 2005-03-17 | 2005-10-05 | 西安交通大学 | Forced heat exchange tube |
| CN201034430Y (en) * | 2007-07-20 | 2008-03-12 | 哈尔滨鑫北源电站设备制造有限公司 | Power boiler H-shaped coal economizer |
| CN201514143U (en) * | 2009-03-23 | 2010-06-23 | 张家港市华东电站锅炉部件制造有限公司 | Fin of H-shaped fin heat exchange tube |
| JP2014020580A (en) * | 2012-07-12 | 2014-02-03 | Panasonic Corp | Fin tube type heat exchanger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106558350A (en) * | 2016-11-25 | 2017-04-05 | 中国核动力研究设计院 | A kind of inner fin heat exchanger |
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| CN105674784B (en) | 2017-05-10 |
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Address after: 410000, No. 258, Zhong Xiang Road, Tianxin District, Hunan, Changsha Applicant after: Liu Yanghe Address before: 266602 Shandong province Qingdao city qutangxia Road No. 36 B Applicant before: Liu Yanghe |
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Effective date of registration: 20190621 Address after: 221699 East of Hanxing Road and South of Kunming Road, Peixian Economic Development Zone, Xuzhou City, Jiangsu Province Patentee after: Xuzhou Zhonglun Photovoltaic Material Co., Ltd. Address before: 410000 No. 258, Xiang Fu Middle Road, Tianxin District, Changsha, Hunan Patentee before: Liu Yanghe |