CN201322564Y - Air preheater - Google Patents
Air preheater Download PDFInfo
- Publication number
- CN201322564Y CN201322564Y CNU2008201619659U CN200820161965U CN201322564Y CN 201322564 Y CN201322564 Y CN 201322564Y CN U2008201619659 U CNU2008201619659 U CN U2008201619659U CN 200820161965 U CN200820161965 U CN 200820161965U CN 201322564 Y CN201322564 Y CN 201322564Y
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- CN
- China
- Prior art keywords
- air
- heat
- air outlet
- casing body
- inlet port
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to an air preheater to preheat air by utilizing waste heat gases of a bell-type furnace, which comprises a casing body with heat preserving materials. The upper portion and the lower portion of the casing body are respectively provided with a flue gas inlet port and a flue gas outlet port, two clapboards are arranged inside the casing body, a plurality of heat exchanging pipes are evenly disposed between the two clapboards, the upper portion and the lower portion of one side of the casing body are provided with an air outlet port and an air inlet port, the flue gases are communicated between the two clapboards, and another clapboard is disposed in the middle of the clapboard close to the side with the air inlet port and the air outlet port to separate the air outlet port and the air inlet port. The utility model is welding free because an ordinary seamless steel pipe is utilized as the heat exchanging pipe, thereby enabling the air preheater to be simple in structure and convenient in installation, lowering costs and prolonging service life. In addition, screw heat-resistant steel sheets are arranged inside the heat exchanging pipe to enable air to be capable of fully walking along pipe walls, to absorb heat to the maximum and to raise temperature or screw fins are welded on the outer side of the pipe walls to enlarge a heat transfer area and to abundantly improve heat exchanging effects.
Description
Technical field:
The utility model relates to a kind of air heater, relates in particular to a kind of waste heat gas that utilizes bell furnace carries out preheating to air device.
Background technology:
In recent years, along with market to the sheet material of ferrous metal and non-ferrous metal bright annealing, the continuous increase of band demand, and these sheet materials, band in production process often with the form transmission of rolling, its heat treatment mainly relies on the combustion gas bell furnace for a long time, the high combustion rate burner that bell furnace adopts is when burning, be to mix with coal gas by air and the coal gas ratio regulating system air with surplus, oxygen content (volume fraction) is controlled at 3%-5% in the general gaseous mixture, realizes completing combustion.As the air themperature of sending into is high more, the efficiency of combustion of coal gas, the combustion intensity of burner is then good more, gas-fired is then safe more, the high-temperature flue gas that the air heat method of present bell furnace mostly adopts bell furnace to be produced in heating process heats by the heat transmission, this mode of heating meets the industrial policy of building a conservation-minded society that country is advocated, and avoids high-temperature flue gas a large amount of in the bell furnace directly to be discharged in the air simultaneously, produces the greenhouse effects contaminated environment.Disclose a kind of bell type annealing furnace combustion air preheater as Chinese utility model patent CN 2432221Y, it includes the housing that has smoke entrance and air ports, and internal and external casing is arranged in the housing; Circular passage between the internal and external casing constitutes air duct, and its upper and lower side is communicated with air ports respectively; Annular chamber between inner sleeve inner chamber and outer tube and the housing constitutes exhaust gases passes, and its lower end and upper end are communicated with smoke entrance respectively; Internal and external casing one among both are round tube, and another person is a finned tube, or both are finned tube.Though this technology can be carried out heat exchange in limited housing inner chamber, but because internal and external casing is finned tube, to have bigger heat exchange area in the inner chamber in order making, some finned tubes must to be welded together, have complex structure, process loaded down with trivial details and heat uneven shortcoming.
The utility model content:
The purpose of this utility model just provides a kind of novel air preheater simple in structure, easy for installation.
The utility model is to realize like this, a kind of air preheater, comprise heat exchanger tube, dividing plate and contain the housing of insulation material, be respectively arranged with gas approach and outlet up and down at described housing, it is characterized in that: two dividing plates are arranged in described housing, between described two dividing plates, some heat exchanger tubes are installed equably, side upper and lower settings at described housing has the air export and import, flue gas circulates between described two dividing plates, in centre another piece dividing plate is arranged, described air inlet and outlet are separated near the dividing plate of air inlet and outlet one side.
The utility model compared with prior art has following advantage:
1. be heat exchanger tube owing to having adopted general heat-resisting thin-walled, simple in structure, easy for installation, reduced production cost, improved service life.
2. have the heat-resisting steel disc of spiral in the heat exchanger tube, make air in the process of walking, fully, absorb heat to greatest extent, its temperature is raise along the tube wall walking.Or outside tube wall, be welded with helical fin, and increase heat transfer area, the inner air tube temperature is raise to greatest extent, flue-gas temperature is reduced to greatest extent, fully reach the heat exchange effect.
Description of drawings:
Fig. 1 is the structural representation of air preheater described in the utility model
1. housing 2. gas approach 3. insulation materials 4. dividing plates 5. heat exchanger tubes 6. air outlet slits 7. dividing plate A 8. air intlets 9. exhanst gas outlets
The specific embodiment:
As can be seen from Figure 1, a kind of air preheater, comprise heat exchanger tube 5, dividing plate 4 and the housing 1 that contains insulation material 3, being respectively arranged with gas approach 2 up and down and exporting 9 at described housing 1, it is characterized in that: two described dividing plates 4 are arranged in described housing 1, between described two dividing plates 4, some heat exchanger tubes 5 are installed equably, side upper and lower settings at described housing 1 has air outlet slit 6 and import 8, flue gas circulates between described two dividing plates 4, in centre another piece dividing plate A7 is arranged, described air outlet slit 6 and import 8 are separated near the dividing plate 4 of air outlet slit 6 and import 8 one sides.
Inwall at described air outlet slit 6 place's heat exchanger tubes 5 has flight.
The outside at described air outlet slit 6 place's heat exchanger tubes 5 is welded with helical fin equably.
Claims (3)
1. air preheater, comprise heat exchanger tube (5), dividing plate (4) and contain the housing (1) of insulation material (3), being respectively arranged with gas approach (2) up and down and exporting (9) at described housing (1), it is characterized in that: two described dividing plates (4) are arranged in described housing (1), some heat exchanger tubes (5) are installed between described two dividing plates (4) equably, side upper and lower settings at described housing (1) has air outlet slit (6) and import (8), flue gas circulates between described two dividing plates (4), in centre another piece dividing plate A (7) is arranged, described air outlet slit (6) and import (8) are separated near the dividing plate (4) of air outlet slit (6) and import (8) one sides.
2. a kind of air preheater according to claim 1 is characterized in that: the inwall of locating heat exchanger tube (5) at described air outlet slit (6) has flight.
3. a kind of air preheater according to claim 1 and 2 is characterized in that: the outside of locating heat exchanger tube (5) at described air outlet slit (6) is welded with helical fin equably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201619659U CN201322564Y (en) | 2008-10-24 | 2008-10-24 | Air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201619659U CN201322564Y (en) | 2008-10-24 | 2008-10-24 | Air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201322564Y true CN201322564Y (en) | 2009-10-07 |
Family
ID=41159944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201619659U Expired - Fee Related CN201322564Y (en) | 2008-10-24 | 2008-10-24 | Air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201322564Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213557A (en) * | 2011-04-14 | 2011-10-12 | 什邡市同佳机械有限公司 | Preheater of synthesis ammonia raw material gas |
| CN102304615A (en) * | 2011-07-11 | 2012-01-04 | 艾伯纳工业炉(太仓)有限公司 | Central heat exchanger for bright annealing bell type furnace |
| CN103884196A (en) * | 2014-03-10 | 2014-06-25 | 北京矿大节能科技有限公司 | Smoke waste heat exchanger and recovery device |
-
2008
- 2008-10-24 CN CNU2008201619659U patent/CN201322564Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213557A (en) * | 2011-04-14 | 2011-10-12 | 什邡市同佳机械有限公司 | Preheater of synthesis ammonia raw material gas |
| CN102213557B (en) * | 2011-04-14 | 2012-09-12 | 什邡市同佳机械有限公司 | Preheater of synthesis ammonia raw material gas |
| CN102304615A (en) * | 2011-07-11 | 2012-01-04 | 艾伯纳工业炉(太仓)有限公司 | Central heat exchanger for bright annealing bell type furnace |
| CN103884196A (en) * | 2014-03-10 | 2014-06-25 | 北京矿大节能科技有限公司 | Smoke waste heat exchanger and recovery device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091007 Termination date: 20131024 |