CN103134069A - Novel finned tube type air preheater - Google Patents
Novel finned tube type air preheater Download PDFInfo
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- CN103134069A CN103134069A CN2011103913658A CN201110391365A CN103134069A CN 103134069 A CN103134069 A CN 103134069A CN 2011103913658 A CN2011103913658 A CN 2011103913658A CN 201110391365 A CN201110391365 A CN 201110391365A CN 103134069 A CN103134069 A CN 103134069A
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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
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Abstract
A novel finned tube type air preheater comprises an outer shell and heat exchanging components, which the heat exchanging components are arranged in the outer shell, a smoke inlet is arranged at the top of the outer shell, a smoke outlet is arranged at the bottom of the outer shell, an air outlet is arranged on the upper portion of one side face of the outer shell, an air inlet is arranged below the other side face of the outer shell, the heat exchanging components are heat transferring tubes, a plurality of heat transferring tubes are the same and are overlapped mutually, the axial direction of each heat transferring tube is the same, two opening ends of each heat transferring tube are respectively connected with the smoke inlet and the smoke outlet, each heat transferring tube comprises two same finned boards, each finned board comprises a board body and a plurality of fins, the shape of the cross section of the vertical direction of each board body is in a shape like a Chinese character 'men', each fin is connected on the surface of each board body, opening ends of the two finned boards are in oppositely butting joint to form a pipeline, each fin is perpendicular to the plane of each board body, and the fins are connected on the inner surface and the outer surface of each board body. Through the technical scheme, the novel finned tube type air preheater is light in weight, small in size and economical in investment.
Description
Technical field
The technical program belongs to heat exchange device technical field, specifically a kind of Novel fin tubular air preheater.
Background technology
The operation principle of air preheater is, hot flue gas and cold air are carried out heat exchange, 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 transfer effect.Temperature due to hot flue gas is very high in addition, the highest can be greater than 1000 ℃, in addition, hot flue gas itself has very strong corrosivity, the performance of heat exchanger under hot conditions has high requirements like this.
Summary of the invention
For the physico/chemical properties of the hot flue gas of being satisfied with air preheater and the heat exchange property high request to air preheater, the technical program proposes a kind of new flat-plate air air preheater, and concrete technical scheme is as follows:
A kind of Novel fin tubular air preheater comprises the heat exchange device in shell and shell; The top that the bottom that the top of described shell is provided with gas approach, shell is provided with exhanst gas outlet, a shell side be provided with air outlet slit, shell another side below be provided with air intlet;
Described heat exchange device is heat-transfer pipe, and heat-transfer pipe has identical a plurality of, and each heat-transfer pipe superposes mutually, each heat-transfer pipe axially identical; Two openends of heat-transfer pipe gas approach respectively are connected with exhanst gas outlet;
Described heat-transfer pipe comprises two identical fin plates; Described 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 to the surface of plate body; The openend of two fin plates docks the formation pipeline in opposite directions; Described fin is vertical with the plate body plane, and each fin is connected to inner surface and the outer surface of plate body;
Fin for the inner surface that is connected to plate body:
The length direction of fin is consistent with the length direction of pipeline; Fin is flat shape, and it is rectilinear form that each fin is arranged the air channel that consists of;
Fin for the outer surface that is connected to 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 arc, and it is the serpentine shape that each fin is arranged the air channel that consists of.
The cross section of the length direction of the fin of the described outer surface that is connected to plate body is trapezoidal.
The two side of " door " font openend of described plate body all is provided with the bending edges outside pipeline; The bending edges of the correspondence of two fin plates is closely connected.Be provided with sealing gasket between the bending edges that the correspondence of two fin plates connects, pass through bolted between two bending edges and sealing gasket.
The material of described fin plate is chrome-nickel steel or aluminium alloy.Described fin plate is the overall structure of casting.
At the bottom of being connected to the fin of outer surface of plate body, large top is little, 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 the fin of the outer surface that is connected to plate body in formation S type air channel is Heterogeneous Permutation in opposite directions, is laterally that equidirectional is arranged, and spacing equates.
Use the technical program, 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 exchange amount, equipment is lighter, and volume is less, invests more economical.
Description of drawings
Fig. 1 is the profile schematic diagram of embodiment;
Fig. 2 is the schematic diagram 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 schematic diagram of embodiment
Fig. 6 is the fin schematic diagram that is connected to the outer surface of plate body;
Fig. 7 is fluid at the outer surface of plate body along air channel flow trace schematic diagram, and the direction of arrow is fluid flow direction;
In figure, fin plate 1, plate body 2, the fin 301 that is connected to the inner surface of plate body, the fin 302 that is connected to 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
The technical program is further illustrated as follows below in conjunction with accompanying drawing and the specific embodiment:
A kind of Novel fin tube sheet heat-transfer pipe comprises two identical fin plates; Described 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 to the surface of plate body; The openend of two fin plates docks the formation pipeline in opposite directions; Described fin is vertical with the plate body plane, and each fin is connected to inner surface and the outer surface of plate body;
Fin for the inner surface that is connected to plate body:
The length direction of fin is consistent with the length direction of pipeline; Fin is flat shape, and it is rectilinear form that each fin is arranged the air channel that consists of;
Fin for the outer surface that is connected to 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 arc, and it is the serpentine shape that each fin is arranged the air channel that consists of.
The cross section of the length direction of the fin of the described outer surface that is connected to plate body is trapezoidal.
The two side of " door " font openend of described plate body all is provided with the bending edges outside pipeline; The bending edges of the correspondence of two fin plates is closely connected.Be provided with sealing gasket between the bending edges that the correspondence of two fin plates connects, pass through bolted between two bending edges and sealing gasket.
The material of described fin plate is chrome-nickel steel or aluminium alloy.Described fin plate is the overall structure of casting.
In this example, be connected to the fin of outer surface of plate body at the bottom of large 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 the fin of the outer surface that is connected to plate body in formation S type air channel is Heterogeneous Permutation in opposite directions, is laterally that equidirectional is arranged, and spacing equates.
Claims (6)
1. a Novel fin tubular air preheater, is characterized in that comprising the heat exchange device in shell and shell; The top that the bottom that the top of described shell is provided with gas approach, shell is provided with exhanst gas outlet, a shell side be provided with air outlet slit, shell another side below be provided with air intlet;
Described heat exchange device is heat-transfer pipe, and heat-transfer pipe has identical a plurality of, and each heat-transfer pipe superposes mutually, each heat-transfer pipe axially identical; Two openends of heat-transfer pipe gas approach respectively are connected with exhanst gas outlet;
Described heat-transfer pipe comprises two identical fin plates; Described 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 to the surface of plate body; The openend of two fin plates docks the formation pipeline in opposite directions; Described fin is vertical with the plate body plane, and each fin is connected to inner surface and the outer surface of plate body;
Fin for the inner surface that is connected to plate body:
The length direction of fin is consistent with the length direction of pipeline; Fin is flat shape, and it is rectilinear form that each fin is arranged the air channel that consists of;
Fin for the outer surface that is connected to 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 arc, and it is the serpentine shape that each fin is arranged the air channel that consists of.
2. Novel fin tubular air preheater according to claim 1 is characterized in that the cross section of length direction of the fin of the described outer surface that is connected to plate body is trapezoidal.
3. Novel fin tubular air preheater according to claim 1, the two side that it is characterized in that " door " font openend of described 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 fin tubular air preheater according to claim 1 is characterized in that being provided with sealing gasket between bending edges that the correspondence at two fin plates connects, passes through bolted between two bending edges and sealing gasket.
5. Novel fin tubular air preheater according to claim 1, the material that it is characterized in that described fin plate is chrome-nickel steel or aluminium alloy.
6. Novel fin tubular air preheater according to claim 1, is characterized in that described fin plate is the overall structure of casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103913658A CN103134069A (en) | 2011-11-30 | 2011-11-30 | Novel finned tube type air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103913658A CN103134069A (en) | 2011-11-30 | 2011-11-30 | Novel finned tube type air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103134069A true CN103134069A (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103913658A Pending CN103134069A (en) | 2011-11-30 | 2011-11-30 | Novel finned tube type air preheater |
Country Status (1)
| Country | Link |
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| CN (1) | CN103134069A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104654841A (en) * | 2013-11-22 | 2015-05-27 | 江苏东方成套设备制造有限公司 | Fin heat exchanger of air preheating device |
| CN107741026A (en) * | 2017-11-08 | 2018-02-27 | 江阴德耐特重工科技有限公司 | A kind of power plant's hot air heat exchange tube assembly |
-
2011
- 2011-11-30 CN CN2011103913658A patent/CN103134069A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104654841A (en) * | 2013-11-22 | 2015-05-27 | 江苏东方成套设备制造有限公司 | Fin heat exchanger of air preheating device |
| CN107741026A (en) * | 2017-11-08 | 2018-02-27 | 江阴德耐特重工科技有限公司 | A kind of power plant's hot air heat exchange tube assembly |
| CN107741026B (en) * | 2017-11-08 | 2023-12-15 | 江阴德耐特重工科技有限公司 | Hot air heat exchange tube assembly of power plant |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130605 |