CN204943547U - A kind of air preheater - Google Patents
A kind of air preheater Download PDFInfo
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- CN204943547U CN204943547U CN201520624409.0U CN201520624409U CN204943547U CN 204943547 U CN204943547 U CN 204943547U CN 201520624409 U CN201520624409 U CN 201520624409U CN 204943547 U CN204943547 U CN 204943547U
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- Prior art keywords
- casing
- dividing plate
- flue gas
- air
- heat
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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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- Air Supply (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to a kind of air preheater, for the recycling of flue gas of heating furnace heat.This preheater comprises casing, in casing, dividing plate is set, dividing plate will be divided into upper and lower Liang Ge district in casing, upper strata flue gas flows out district and lower floor's flue gas flows into district, passes into air, realize the heat exchange between the upper and lower flue gas and air respectively in heat exchanger tube, flow out on district's internal box and dividing plate at upper strata flue gas and be distributed with deflection plate, there is air entrance and exit in the top and the bottom of whole casing, on the left of casing, have gas approach and outlet, on the right side of casing, have U-shaped tube connector.The air preheater that the application provides, have structure simple, heat exchange efficiency is high, can make full use of the heat of flue gas entrained with, has saved the energy.
Description
Technical field
The utility model relates to a kind of air preheater, for the recycling of flue gas of heating furnace heat.
Background technology
Air preheater belongs to the fuel gas heat recycling device of heating furnace or steam boiler, it is the important economized portion of equipment, common air preheater is regenerative air preheater, air preheater is divided into radiating area and heat absorption district, and heat exchanger tube generally adopts straight tube, and the temperature after heat absorption district absorbs flue gas heat of the accumulation of heat industrial media in straight tube raises, medium evaporates and rises, therefore be called evaporator section again, the heat that heat storage medium absorbs passes to air at radiating area, and realizes the object of air preheat.But conventional heat exchanger tube heat transfer area is little, fully can not absorb the heat of flue gas and cause the waste of energy, the heat that air obtains is also less, and the temperature reached after air preheat is lower, and pre-heat effect is not remarkable.
For these reasons, a kind of novel air preheater of design invention just seems particularly necessary.
Summary of the invention
This application provides a kind of air preheater, little to solve air preheater heat transfer area, air preheating temperature is lower, the problem that volume is larger.
To achieve these goals, the technological means taked of the application is as follows:
A kind of air preheater, comprise casing, be inserted with dividing plate at casing in centre, the two ends of described dividing plate are vertically fixed on the inwall of casing, and casing is equally divided into upper region and lower area by dividing plate;
On the shell of described casing, on the shell of casing, be respectively arranged with cool air inlet and hot air outlet in upper and lower both sides;
Described box house, perpendicular to the inwall of casing, is evenly placed with end to end heat exchanger tube;
The two ends of described heat exchanger tube connect with cool air inlet and hot air outlet respectively;
Described heat exchanger tube is through dividing plate;
On the homonymy sidewall of described casing, be respectively arranged with exhanst gas outlet and smoke inlet up and down;
On described casing, at the opposite side relative with exhanst gas outlet, be provided with U-shaped tube connector, the two ends of U-shaped tube connector are connected with the lower regions of casing respectively;
On the inwall in the upper region of described casing and dividing plate, the inwall perpendicular to dividing plate or casing is provided with deflection plate, and the deflection plate be positioned on inwall and dividing plate is staggered; Staggeredly be arranged so that turbulence effects is better.
The two ends up and down of described U-shaped tube connector are respectively arranged with the first smoke filtration net and the second smoke filtration net.
The flue gas of heat enters from smoke inlet, through the space of the lower partition, then through U-tube, enters dividing plate upper space, then from exhanst gas outlet out.Cold air enters from air intake, through heat exchanger tube, out from air outlet slit finally.
The object adding U-tube is the flow direction changing flue gas, allows flue gas be left to upper region from dividing plate lower area, allows flue gas and the abundant heat exchange of air.Why want that in U-tube, add filter screen is want to add deflection plate in upper region, prevents flue gas excessive in the pressure drop in upper region.
This preheater comprises casing, in casing, dividing plate is set, dividing plate will be divided into upper and lower Liang Ge district in casing, upper strata flue gas flows out district and lower floor's flue gas flows into district, passes into air, realize the heat exchange between the upper and lower flue gas and air respectively in heat exchanger tube, flow out on district's internal box and dividing plate at upper strata flue gas and be distributed with deflection plate, there is air entrance and exit in the top and the bottom of whole casing, on the left of casing, have gas approach and outlet, on the right side of casing, have U-shaped tube connector.
Adopt Flange joint between above-mentioned U-shaped tube connector and casing, be convenient to the dismounting of tube connector, in tube connector, have flue gas filter screen, be convenient to cleaning and the replacing of filter screen.
Above-mentioned bilevel heat exchanger tube is how U-shaped cascaded structure, increases heat transfer area, improves heat transfer efficiency.
Above-mentioned upper strata flue gas flows out on district's internal box and dividing plate installs deflection plate, changes flow of flue gas state, improves flue gas turbulivity, prolong smoke flowing time, improve heat transfer efficiency.
Described utility model, how U-shaped series connection heat exchanger tube, deflection plate and upper and lower two-layer series connection secondary heat exchange all improve heat transfer efficiency, under the prerequisite reaching air preheating temperature, reduce the volume of air preheater, save material.
In sum, the air preheater that the application provides, have structure simple, heat exchange efficiency is high, can make full use of the heat of flue gas entrained with, has saved the energy.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of air preheater;
In figure 1 for cool air inlet, 2 for heat exchanger tube, 3 for deflection plate, 4 for casing, 5 be the first flue gas filter screen, 6 for U-shaped tube connector, 7 be the second flue gas filter screen, 8 is hot air outlet, and 9 is smoke inlet, and 10 is dividing plate, and 11 is exhanst gas outlet.
Detailed description of the invention
Fig. 1 is a kind of structural representation of air preheater;
A kind of air preheater, comprise casing 4, be inserted with dividing plate 10 at casing 4 in centre, the two ends of described dividing plate 10 are vertically fixed on the inwall of casing 4, and casing 4 is equally divided into upper and lower two regions by dividing plate 10;
On the shell of described casing 4, on the shell of casing 4, be respectively arranged with cool air inlet 1 and hot air outlet 8 in upper and lower both sides;
Described casing 4 is inner, perpendicular to the inwall of casing 4, is evenly placed with end to end heat exchanger tube 2;
The two ends of described heat exchanger tube 2 connect with cool air inlet 1 and hot air outlet 8 respectively;
Described heat exchanger tube 2 is through dividing plate 10;
On the homonymy sidewall of described casing 4, be respectively arranged with exhanst gas outlet 11 and smoke inlet 9 up and down;
On described casing 4, at the opposite side relative with exhanst gas outlet 11, be provided with U-shaped tube connector 6, the two ends of U-shaped tube connector 6 are connected with the lower regions of casing 4 respectively;
On the inwall in the upper region of described casing 4 and dividing plate 10, the inwall perpendicular to dividing plate 10 or casing 4 is provided with deflection plate 3, and the deflection plate 3 be positioned on inwall and dividing plate is staggered, and is staggeredly arranged so that turbulence effects is better.
The two ends up and down of described U-shaped tube connector 6 are respectively arranged with the first smoke filtration net 5 and the second smoke filtration net 7.
The flue gas of heat enters from smoke inlet 10, through the space of dividing plate 10 bottom, then through U-tube 6, enters dividing plate upper space, then from exhanst gas outlet 11 out.Cold air enters from air intake 1, through heat exchanger tube 2, out from air outlet slit 8 finally.
The object adding U-tube is the flow direction changing flue gas, allows flue gas be left to upper region from dividing plate lower area, allows flue gas and the abundant heat exchange of air.Why want that in U-tube, add filter screen is want to add deflection plate in upper region, prevents flue gas excessive in the pressure drop in upper region.
This preheater comprises casing, in casing, dividing plate is set, dividing plate will be divided into upper and lower Liang Ge district in casing, upper strata flue gas flows out district and lower floor's flue gas flows into district, passes into air, realize the heat exchange between the upper and lower flue gas and air respectively in heat exchanger tube, flow out on district's internal box and dividing plate at upper strata flue gas and be distributed with deflection plate, there is air entrance and exit in the top and the bottom of whole casing, on the left of casing, have gas approach and outlet, on the right side of casing, have U-shaped tube connector.
Adopt Flange joint between above-mentioned U-shaped tube connector and casing, be convenient to the dismounting of tube connector, in tube connector, have flue gas filter screen, be convenient to cleaning and the replacing of filter screen.
Above-mentioned bilevel heat exchanger tube is how U-shaped cascaded structure, increases heat transfer area, improves heat transfer efficiency.
Above-mentioned upper strata flue gas flows out on district's internal box and dividing plate installs deflection plate, changes flow of flue gas state, improves flue gas turbulivity, prolong smoke flowing time, improve heat transfer efficiency.
Described utility model, how U-shaped series connection heat exchanger tube, deflection plate and upper and lower two-layer series connection secondary heat exchange all improve heat transfer efficiency, under the prerequisite reaching air preheating temperature, reduce the volume of air preheater, save material.
In sum, the air preheater that the application provides, have structure simple, heat exchange efficiency is high, can make full use of the heat of flue gas entrained with, has saved the energy.
Claims (1)
1. an air preheater, comprise casing (4), dividing plate (10) is inserted with in centre at casing (4), the two ends of described dividing plate (10) are vertically fixed on the inwall of casing (4), and casing (4) is equally divided into upper region and lower area by dividing plate (10); On the shell of casing (4), be respectively arranged with cool air inlet (1) and hot air outlet (8) in upper and lower both sides; In the inside of casing (4), perpendicular to the inwall of casing (4), be evenly placed with end to end heat exchanger tube (2); The two ends of described heat exchanger tube (2) connect with cool air inlet (1) and hot air outlet (8) respectively; Described heat exchanger tube (2) is through dividing plate (10); On the homonymy sidewall of described casing (4), be respectively arranged with exhanst gas outlet (11) and smoke inlet (9) up and down; On casing (4), the opposite side relative with exhanst gas outlet (11), is provided with U-shaped tube connector (6), and the two ends of U-shaped tube connector (6) are connected with the lower regions of casing (4) respectively; It is characterized in that, on the inwall in the upper region of described casing (4) and dividing plate (10), inwall perpendicular to dividing plate (10) or casing (4) is provided with deflection plate (3), and the deflection plate (3) be positioned on inwall and dividing plate is staggered; The two ends up and down of described U-shaped tube connector (6) are respectively arranged with the first smoke filtration net (5) and the second smoke filtration net (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520624409.0U CN204943547U (en) | 2015-08-18 | 2015-08-18 | A kind of air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520624409.0U CN204943547U (en) | 2015-08-18 | 2015-08-18 | A kind of air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204943547U true CN204943547U (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520624409.0U Active CN204943547U (en) | 2015-08-18 | 2015-08-18 | A kind of air preheater |
Country Status (1)
| Country | Link |
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| CN (1) | CN204943547U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112393271A (en) * | 2020-11-17 | 2021-02-23 | 连云港佑丰电力设备有限公司 | Air preheater |
| CN114459050A (en) * | 2021-12-22 | 2022-05-10 | 国能长源武汉青山热电有限公司 | Air preheater for boiler and use method thereof |
-
2015
- 2015-08-18 CN CN201520624409.0U patent/CN204943547U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112393271A (en) * | 2020-11-17 | 2021-02-23 | 连云港佑丰电力设备有限公司 | Air preheater |
| CN114459050A (en) * | 2021-12-22 | 2022-05-10 | 国能长源武汉青山热电有限公司 | Air preheater for boiler and use method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |