CN205351378U - Variable flue cross -section air heater - Google Patents
Variable flue cross -section air heater Download PDFInfo
- Publication number
- CN205351378U CN205351378U CN201521143761.9U CN201521143761U CN205351378U CN 205351378 U CN205351378 U CN 205351378U CN 201521143761 U CN201521143761 U CN 201521143761U CN 205351378 U CN205351378 U CN 205351378U
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- CN
- China
- Prior art keywords
- flue gas
- air preheater
- air heater
- box
- cigarette board
- 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.)
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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 variable flue cross -section air heater, including the air heater body, be equipped with the entry smoke -box on the upper portion of air heater body, the entry smoke -box is equipped with high temperature flue gas entry, is equipped with the wind pressure potentiometre in high temperature flue gas entrance, the entry smoke -box is equipped with with air heater body juncture and cuts the cigarette board, cuts the cigarette board and locates the inside of cutting cigarette board shell, is equipped with and cuts the lead screw that the cigarette board is connected at the inside of cutting cigarette board shell, the upside that cuts the cigarette board, and the one end of lead screw is connected with servo motor's output, the wind pressure potentiometre pass through the wire with servo motor and be connected. The utility model discloses on tubular air heater's basis, install one set of variable flue cross -section device additional in tube bank flue gas entrance, reach the circulation large tracts of land that changes the quantity of flue gas through the tube bank and change the flue gas promptly, make intraductal flue gas speed hold in appropriate numerical range, improve heat exchange efficiency, prevent the jam of intraductal deposition.
Description
Technical field
This utility model relates to boiler plant technical field, specifically a kind of flue variable cross section air preheater.
Background technology
Air preheater is exactly that the flue gas in boiler back end ductwork passes through the internal fin heating surface by the air preheat before entrance boiler to uniform temperature.For improving the heat exchange performance of boiler, reduce energy expenditure.The air preheater that Industrial Boiler is conventional is tubular air preheater, and its main heat transfer parts are thin-wall steel tubes；Tubular air preheater is many, and in cube, steel pipe is vertically staggered each other, and two ends are welded on lower perforated plate；Tubular air preheater is at bobbin carriage built with sagging plate, and flue gas is along steel pipe down through preheater, and air, then laterally across preheater, completes heat conduction.When exhaust gas volumn as relatively low in boiler load reduces, when being restrained by air preheater, flow velocity reduces, and makes heat transfer effect reduce, easily dust stratification blocking in pipe.
Utility model content
The purpose of this utility model is in that to provide a kind of flue variable cross section air preheater, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, this utility model provides following technical scheme:
A kind of flue variable cross section air preheater, including air preheater body, is provided with entrance smoke-box on the top of air preheater body, and entrance smoke-box is provided with high-temperature flue gas entry, is provided with blast potentiometer at high-temperature flue gas entry place；Described entrance smoke-box and air preheater body intersection are provided with a section cigarette plate, cut cigarette plate and are located at the inside cutting cigarette plate shell, cutting the inside of cigarette plate shell, are cutting the screw mandrel that upside is provided with and section cigarette plate is connected of cigarette plate, and one end of screw mandrel is connected with the outfan of servomotor；Described blast potentiometer is connected by wire with servomotor.
As further program of the utility model: being additionally provided with hot-blast outlet and cold air inlet on described air preheater body, hot-blast outlet is located at the top of cold air inlet.
As further program of the utility model: the pipeline side, lower section of described air preheater body is provided with low-temperature flue gas outlet.
Compared with prior art, this utility model is on the basis of tubular air preheater, a set of flue variable section device is installed additional at tube bank smoke inlet place, blast potentiometer detects that the rotation of the change generation corresponding electric potential signal control servomotor of exhaust gas volumn cuts cigarette Board position again through screw mandrel adjustment thus adjusting the quantity blocking tube bank, reach to change flue gas and namely changed circulation husband's area of flue gas by the quantity restrained, the velocity of flue gas in pipe is made to be maintained in suitable numerical range, improve heat exchange efficiency, it is prevented that dust stratification blocking in pipe.
Accompanying drawing explanation
Fig. 1 is the structural representation of flue variable cross section air preheater.
In figure: 1-air preheater body, 2-entrance smoke-box, 3-blast potentiometer, 4-servomotor, 5-screw mandrel, 6-cut cigarette plate shell, 7-cuts cigarette plate, the outlet of 8-high-temperature flue gas entry, 9-low-temperature flue gas, 10-hot-blast outlet, 11-cold air inlet.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the model state of this utility model protection.
Refer to Fig. 1, in this utility model embodiment, a kind of flue variable cross section air preheater, including air preheater body 1, be provided with entrance smoke-box 2 on the top of air preheater body 1, entrance smoke-box 2 is provided with high-temperature flue gas entry 8, is provided with blast potentiometer 3 at high-temperature flue gas entry 8 place；Described entrance smoke-box 2 is provided with air preheater body 1 intersection and cuts cigarette plate 7, cut cigarette plate 7 and be located at the inside cutting cigarette plate shell 6, cutting the inside of cigarette plate shell 6, cutting the screw mandrel 5 that upside is provided with and section cigarette plate 7 is connected of cigarette plate 7, one end of screw mandrel 5 is connected with the outfan of servomotor 4；Described blast potentiometer 3 is connected by wire with servomotor 4.Being additionally provided with hot-blast outlet 10 and cold air inlet 11 on described air preheater body 1, hot-blast outlet 10 is located at the top of cold air inlet 11.The pipeline side, lower section of described air preheater body 1 is provided with low-temperature flue gas outlet 9.In use, when blast potentiometer 3 perceive current potential change time, pass to servomotor 4 by wire, control servomotor 4 and rotate so that screw mandrel 5 rotates, screw mandrel 5 rotates to drive and cuts a cigarette plate 7 and move, and by cutting a cigarette plate 7, flue cross section is adjusted.
This utility model is on the basis of tubular air preheater, a set of flue variable section device is installed additional at tube bank smoke inlet place, blast potentiometer detects that the rotation of the change generation corresponding electric potential signal control servomotor of exhaust gas volumn cuts cigarette Board position again through screw mandrel adjustment thus adjusting the quantity blocking tube bank, reach to change flue gas and namely changed the circulation large area of flue gas by the quantity restrained, the velocity of flue gas in pipe is made to be maintained in suitable numerical range, improve heat exchange efficiency, it is prevented that dust stratification blocking in pipe.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and when without departing substantially from spirit of the present utility model or basic feature, it is possible to realize this utility model in other specific forms.Therefore, no matter from which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above, it is intended that all changes in the implication of the equivalency dropping on claim and scope included in this utility model.Any accompanying drawing labelling in claim should be considered as the claim that restriction is involved.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but not each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should be made as a whole by those skilled in the art, and the technical scheme in each embodiment through appropriately combined, can also form other embodiments that it will be appreciated by those skilled in the art that.
Claims (3)
1. a flue variable cross section air preheater, including air preheater body, it is characterised in that be provided with entrance smoke-box on the top of air preheater body, entrance smoke-box is provided with high-temperature flue gas entry, is provided with blast potentiometer at high-temperature flue gas entry place；Described entrance smoke-box and air preheater body intersection are provided with a section cigarette plate, cut cigarette plate and are located at the inside cutting cigarette plate shell, cutting the inside of cigarette plate shell, are cutting the screw mandrel that upside is provided with and section cigarette plate is connected of cigarette plate, and one end of screw mandrel is connected with the outfan of servomotor；Described blast potentiometer is connected by wire with servomotor.
2. a kind of flue variable cross section according to claim 1 air preheater, it is characterised in that being additionally provided with hot-blast outlet and cold air inlet on described air preheater body, hot-blast outlet is located at the top of cold air inlet.
3. a kind of flue variable cross section according to claim 1 air preheater, it is characterised in that the pipeline side, lower section of described air preheater body is provided with low-temperature flue gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521143761.9U CN205351378U (en) | 2015-12-31 | 2015-12-31 | Variable flue cross -section air heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521143761.9U CN205351378U (en) | 2015-12-31 | 2015-12-31 | Variable flue cross -section air heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205351378U true CN205351378U (en) | 2016-06-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521143761.9U Active CN205351378U (en) | 2015-12-31 | 2015-12-31 | Variable flue cross -section air heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205351378U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109464891A (en) * | 2018-12-28 | 2019-03-15 | 启明星宇节能科技股份有限公司 | A kind of flue gas speed regulation device |
| CN115200014A (en) * | 2022-07-01 | 2022-10-18 | 北京兴达奇热工控制设备有限公司 | Air-gas double-preheating blast furnace gas radiation pipe combustion system |
-
2015
- 2015-12-31 CN CN201521143761.9U patent/CN205351378U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109464891A (en) * | 2018-12-28 | 2019-03-15 | 启明星宇节能科技股份有限公司 | A kind of flue gas speed regulation device |
| CN115200014A (en) * | 2022-07-01 | 2022-10-18 | 北京兴达奇热工控制设备有限公司 | Air-gas double-preheating blast furnace gas radiation pipe combustion system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |