CN202361404U - Novel finned tube type air preheater - Google Patents
Novel finned tube type air preheater Download PDFInfo
- Publication number
- CN202361404U CN202361404U CN2011204919074U CN201120491907U CN202361404U CN 202361404 U CN202361404 U CN 202361404U CN 2011204919074 U CN2011204919074 U CN 2011204919074U CN 201120491907 U CN201120491907 U CN 201120491907U CN 202361404 U CN202361404 U CN 202361404U
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- China
- Prior art keywords
- fin
- plate body
- shell
- heat
- finned tube
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses a novel finned tube type air preheater which comprises a shell and a plurality of heat exchange devices arranged in the shell, wherein a smoke inlet is formed on the top of the shell; a smoke outlet is formed at the bottom of the shell; an air outlet is formed on the upper part of one side surface of the shell; an air inlet is formed below the other side surface of the shell; the heat exchange devices are same heat transmission tubes which are stacked with one another; the axial directions of the heat transmission tubes are same; two opened ends of each heat transmission tube are respectively connected with the smoke inlet and the smoke outlet; each heat transmission tube comprises two same finned plates; each finned plate comprises a plate body and a plurality of fins; the vertical section of each plate body is n-shaped; the fins are connected on the surfaces of the plate bodies; the opened ends of two finned plates are oppositely butted with each other to form a pipeline; and the fins are vertical to the planes of the plate bodies and respectively connected on the inner surfaces and the outer surfaces of the plate bodies. According to the novel finned tube type air preheater, equipment is relatively light in weight, relatively small in volume and relatively low in investment.
Description
Technical field
The present technique scheme belongs to heat exchange device technical field, specifically is a kind of novel finned tube regenerative air heater.
Background technology
The operation principle of air preheater is, carries out heat exchange to hot flue gas and cold air, and hot flue-gas temperature reduces, and reclaims heat, reaches discharging.The cold air temperature raises, and obtains heat, as combustion-supporting, and fuel saving, this just requires heat exchanger channels to have good heat exchange effect.In addition because the temperature of hot flue gas is very high, the highest can be greater than 1000 ℃, in addition, hot flue gas itself has very strong corrosivity, the performance of heat exchanging device under hot conditions has high requirements like this.
Summary of the invention
For the physico of the hot flue gas of being satisfied with air preheater and the heat exchange property high request to air preheater, the present technique scheme proposes a kind of new flat air preheater, and concrete technical scheme is following:
A kind of novel finned tube regenerative air heater comprises the heat exchange device in shell and the shell; The top that the bottom that the top of said shell is provided with gas approach, shell is provided with exhanst gas outlet, a side of shell be provided with air outlet slit, another side of shell below be provided with air intlet;
Said heat exchange device is a heat-transfer pipe, and heat-transfer pipe has identical a plurality of, each heat-transfer pipe mutual superposition, each heat-transfer pipe axially identical; Two openends of heat-transfer pipe gas approach respectively are connected with exhanst gas outlet;
Said heat-transfer pipe comprises two identical fin plates; Said fin plate comprises plate body and a plurality of fin, and the shape in the vertical direction cross section of plate body is " door " font, and each fin is connected the surface of plate body; The openend of two fin plates docks the formation pipeline in opposite directions; Said fin is vertical with the plate body plane, and each fin is connected to the inner surface and the outer surface of plate body;
Fin for the inner surface that is connected plate body:
The length direction of fin is consistent with the length direction of pipeline; Fin is a flat shape, and it is rectilinear form that each fin is arranged the air channel that constitutes;
Fin for the outer surface that is connected plate body:
The length direction of fin is vertical with the length direction of pipeline; The one side of fin is straight, and another side is an arc, and it is the serpentine shape that each fin is arranged the air channel that constitutes.
The cross section of the length direction of the fin of the said outer surface that is connected plate body is trapezoidal.
The two side of " door " font openend of said plate body all is provided with the bending edges outside pipeline; The bending edges of the correspondence of two fin plates is closely connected.Between the bending edges that the correspondence of two fin plates connects, be provided with sealing gasket, pass through bolted between two bending edges and the sealing gasket.
The material of said fin plate is chrome-nickel steel or aluminium alloy.Said fin plate is the overall structure of casting.
Big top is little at the bottom of being connected the fin of outer surface of plate body, and the base thickness top is thin, and intensity is high, the requirement of the pattern draft when satisfying casting.This structural strength will be much better than the fin of flat construction, and the effective heat transfer sheet area increasing of fin, fin weight saving, and the fin end face is thinner, more is difficult for dust stratification, is that of structural design improves greatly.
The arc surface of fin that constitutes the outer surface that is connected plate body in S type air channel arrangements that misplace in opposite directions laterally is the equidirectional arrangement, and spacing is equal.
Use the present technique scheme, the fluid state of heat transferring medium (flue gas or air) is better, produces flow-disturbing effect preferably.Fluid is constantly shunting and interflow in staggered array of fins, and flows along camber line all the time, makes the stroke of medium in array of fins longer, and the time of staying is longer, has improved heat exchange efficiency.This can only need fin heat exchange pipe still less under the condition of identical heat, equipment is lighter, and volume is littler, invests more economical.
Description of drawings
Fig. 1 is the profile sketch map of embodiment;
Fig. 2 is the sketch map of embodiment internal structure;
Fig. 3 is the local schematic perspective view that amplifies of the heat transfer tube configuration of embodiment;
Fig. 4 is the heat-transfer pipe schematic perspective view of embodiment;
Fig. 5 is the heat transfer tube configuration sketch map of embodiment
Fig. 6 is the fin sketch map that is connected the outer surface of plate body;
Fig. 7 be fluid the outer surface of plate body along the air channel flow trace sketch map, the direction of arrow is fluid flow direction;
Among the figure, fin plate 1, plate body 2, the fin 301 that is connected the inner surface of plate body, the fin 302 that is connected the outer surface of plate body, bending edges 4, sealing gasket 5, bolt 6; Gas approach a, exhanst gas outlet b, air intlet c and air outlet slit d.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment present technique scheme is further specified as follows:
A kind of novel finned tube plate heat-transfer pipe comprises two identical fin plates; Said fin plate comprises plate body and a plurality of fin, and the shape in the vertical direction cross section of plate body is " door " font, and each fin is connected the surface of plate body; The openend of two fin plates docks the formation pipeline in opposite directions; Said fin is vertical with the plate body plane, and each fin is connected to the inner surface and the outer surface of plate body;
Fin for the inner surface that is connected plate body:
The length direction of fin is consistent with the length direction of pipeline; Fin is a flat shape, and it is rectilinear form that each fin is arranged the air channel that constitutes;
Fin for the outer surface that is connected plate body:
The length direction of fin is vertical with the length direction of pipeline; The one side of fin is straight, and another side is an arc, and it is the serpentine shape that each fin is arranged the air channel that constitutes.
The cross section of the length direction of the fin of the said outer surface that is connected plate body is trapezoidal.
The two side of " door " font openend of said plate body all is provided with the bending edges outside pipeline; The bending edges of the correspondence of two fin plates is closely connected.Between the bending edges that the correspondence of two fin plates connects, be provided with sealing gasket, pass through bolted between two bending edges and the sealing gasket.
The material of said fin plate is chrome-nickel steel or aluminium alloy.Said fin plate is the overall structure of casting.
In this example, be connected the fin of outer surface of plate body at the bottom of big top little, the base thickness top is thin, intensity is high, the requirement of the pattern draft when satisfying casting.This structural strength will be much better than the fin of flat construction, and the effective heat transfer sheet area increasing of fin, fin weight saving, and the fin end face is thinner, more is difficult for dust stratification, is that of structural design improves greatly.The arc surface of fin that constitutes the outer surface that is connected plate body in S type air channel arrangements that misplace in opposite directions laterally is the equidirectional arrangement, and spacing is equal.
Claims (6)
1. a novel finned tube regenerative air heater is characterized in that comprising the heat exchange device in shell and the shell; The top that the bottom that the top of said shell is provided with gas approach, shell is provided with exhanst gas outlet, a side of shell be provided with air outlet slit, another side of shell below be provided with air intlet;
Said heat exchange device is a heat-transfer pipe, and heat-transfer pipe has identical a plurality of, each heat-transfer pipe mutual superposition, each heat-transfer pipe axially identical; Two openends of heat-transfer pipe gas approach respectively are connected with exhanst gas outlet;
Said heat-transfer pipe comprises two identical fin plates; Said fin plate comprises plate body and a plurality of fin, and the shape in the vertical direction cross section of plate body is " door " font, and each fin is connected the surface of plate body; The openend of two fin plates docks the formation pipeline in opposite directions; Said fin is vertical with the plate body plane, and each fin is connected to the inner surface and the outer surface of plate body;
Fin for the inner surface that is connected plate body:
The length direction of fin is consistent with the length direction of pipeline; Fin is a flat shape, and it is rectilinear form that each fin is arranged the air channel that constitutes;
Fin for the outer surface that is connected plate body:
The length direction of fin is vertical with the length direction of pipeline; The one side of fin is straight, and another side is an arc, and it is the serpentine shape that each fin is arranged the air channel that constitutes.
2. novel finned tube regenerative air heater according to claim 1 is characterized in that the cross section of length direction of the fin of the said outer surface that is connected plate body is trapezoidal.
3. novel finned tube regenerative air heater according to claim 1 is characterized in that the two side of " door " font openend of said plate body all is provided with the bending edges outside pipeline; The bending edges of the correspondence of two fin plates is closely connected.
4. novel finned tube regenerative air heater according to claim 1 is characterized in that between the bending edges that the correspondence of two fin plates connects, being provided with sealing gasket, passes through bolted between two bending edges and the sealing gasket.
5. novel finned tube regenerative air heater according to claim 1, the material that it is characterized in that said fin plate are chrome-nickel steel or aluminium alloy.
6. novel finned tube regenerative air heater according to claim 1 is characterized in that said fin plate is the overall structure of casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204919074U CN202361404U (en) | 2011-11-30 | 2011-11-30 | Novel finned tube type air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204919074U CN202361404U (en) | 2011-11-30 | 2011-11-30 | Novel finned tube type air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202361404U true CN202361404U (en) | 2012-08-01 |
Family
ID=46572588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204919074U Expired - Fee Related CN202361404U (en) | 2011-11-30 | 2011-11-30 | Novel finned tube type air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202361404U (en) |
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2011
- 2011-11-30 CN CN2011204919074U patent/CN202361404U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20141130 |
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| EXPY | Termination of patent right or utility model |