CN215114140U - Compact flue gas condenser - Google Patents
Compact flue gas condenser Download PDFInfo
- Publication number
- CN215114140U CN215114140U CN202121556278.9U CN202121556278U CN215114140U CN 215114140 U CN215114140 U CN 215114140U CN 202121556278 U CN202121556278 U CN 202121556278U CN 215114140 U CN215114140 U CN 215114140U
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- CN
- China
- Prior art keywords
- fin
- flue gas
- air distribution
- distribution plate
- heat transfer
- Prior art date
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 239000003546 flue gas Substances 0.000 title claims abstract description 36
- 238000009826 distribution Methods 0.000 claims abstract description 36
- 239000000779 smoke Substances 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to the technical field, especially, relate to a compact flue gas condenser, it comprises a plurality of finned tubes that are separated by a fixed distance and parallel arrangement each other, the finned tube includes the parent tube and is the spiral fin body that twines on the parent tube surface, the fin body is by a plurality of fin integrated into one piece, the fin includes windward side, leeward side and connects windward side and two heat transfer surfaces of leeward side, the heat transfer surface of fin all inclines to the same direction along the axial of parent tube, and the heat transfer surface of adjacent fin contacts each other, after the heat transfer surface of fin inclines, the volume of flue gas condenser can be done littleer, reduce the vortex area at the rear portion of heat exchange tube, has promoted coefficient of heat transfer; the windward side and the leeward side of the fins are provided with air distribution plates, and the air distribution plates are provided with slender flow guide holes. Through the gaps formed by the air distribution plates, the flow guide holes and the fallen fins, the flow space of the flue gas is further planned, and the vortex area on the back of the heat exchange tube is further reduced.
Description
Technical Field
The utility model relates to a heat exchanger technical field especially relates to a compact flue gas condenser.
Background
The boiler is a common energy conversion device, which transfers chemical energy released after fuel combustion or heat energy of high-temperature flue gas in industrial production to water in the boiler through a heat transfer process, so that the water is changed into high-temperature water or steam with certain heat energy after absorbing heat. For a traditional boiler, the exhaust gas temperature is generally 160-250 ℃, the exhaust gas temperature is extremely high, and a large amount of heat is contained in the exhaust gas. The traditional boiler lacks of means for effectively reducing the temperature of exhaust gas, and can not overcome the corrosion of condensed water caused by low temperature of exhaust gas, so that the heat efficiency of the traditional boiler can only reach 87-91 percent generally. Further, since the technology of the general hot water boiler is becoming mature, it is difficult to further improve the thermal efficiency thereof.
The turn-fin tube is a highly efficient heat transfer element having a turn-fin. The heat transfer area of the heat exchanger is several times to dozens of times of that of a light pipe, so that the heat transfer can be enhanced, the flow resistance is reduced, the metal consumption is reduced, and the economical efficiency and the operation reliability of the heat exchanger are improved. At present, spiral finned tubes have been widely used in various boilers.
The prior spiral finned tube condenser has larger diameter of the outer circle of the fin and difficult volume compression; after the gas flows through the circular tube, an eddy current area can be formed at the rear part of the circular tube, and high-temperature flue gas can be prevented from being attached to the outer wall of the steel tube due to the existence of the eddy current area, so that the heat transfer efficiency is reduced.
Disclosure of Invention
The utility model discloses an aim at is not enough to prior art, through the institutional advancement to the spiral finned tube, provides a modified condensation heat exchanger to obtain bigger heat transfer area in limited space, make the further turbulent flow that the burning flue gas flows simultaneously, finally reach and show the purpose that improves heat exchange efficiency.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a compact flue gas condenser comprises a plurality of finned tubes at a certain distance from and parallel arrangement each other, every the finned tube includes the parent tube and is the spiral winding at the fin body on parent tube surface, the fin body is by a plurality of fin integrated into one piece, every the fin all includes windward side, leeward side and connects two heat-transfer faces of windward side and leeward side, the axial of parent tube is all followed to same direction slope to the heat-transfer face of fin, and adjacent fin's heat-transfer face contaction, windward side, leeward side keep with parent tube axial vertical, ensure to form a plurality of narrow and small clearances between adjacent fin and parent tube.
Furthermore, among the finned tubes, the gaps between the outermost fins of the adjacent finned tubes are 2-20 mm.
Furthermore, a first air distribution plate is arranged at the top of the windward side of each fin, a second air distribution plate is arranged at the top of the leeward side of each fin, and the inner walls of the first air distribution plate and the second air distribution plate are not in contact with the fins.
Furthermore, the first air distribution plate is of a wave-shaped structure matched with the edge of the windward side, and the second air distribution plate is of a wave-shaped structure matched with the edge of the leeward side.
Furthermore, the first air distribution plate and the second air distribution plate are provided with slender flow guide holes for smoke to pass through.
The utility model has the advantages that: a compact flue gas condenser presses fins of a finned tube into a partially inclined shape through special equipment, the inclined fins are basically contacted with adjacent fins, a plurality of narrow gaps are formed among the fins, the adjacent fins and a base tube, and a boundary layer on the outer surface of a heat exchange tube is reduced, so that the heat efficiency is improved; when the flue gas flows through the inclined finned tubes, the flue gas flows in each narrow gap, so that the eddy current area at the rear part of the base tube is reduced, and the heat exchange efficiency is improved. Be provided with the air distribution plate at the windward side and the leeward side of fin, seted up long and thin water conservancy diversion hole on the top of finned tube, the water conservancy diversion hole will guide the flow of gas, the advantage of bringing of air distribution plate has: through gaps formed by the air distribution plate, the flow guide holes and the inclined fins, the flow space of the flue gas is further planned, and the vortex area on the back of the heat exchange tube is further reduced; due to the arrangement of the air distribution plate, the flue gas is more uniformly flushed in the condenser; the residence time of the flue gas in the condenser is prolonged, and the heat exchange efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of the compact flue gas condenser of the present invention.
FIG. 2 is a schematic structural view and a top view of the finned tube in FIG. 1.
Description of reference numerals:
1-finned tube; 2, a base pipe; 3-a fin body; 31-a fin; 311-windward side; 312-leeward side; 313 heat exchange surface; 41-a first grid plate; 42-a second air distribution plate; and 5-diversion holes.
Detailed Description
The following detailed description of the present invention is provided in connection with the accompanying drawings and the embodiments, and is not intended to limit the scope of the invention.
As shown in fig. 1, the fins of the finned tube are pressed into a partial lodging shape by a special device, the fins after lodging are in basic contact with adjacent fins, specifically, the compact flue gas condenser of this embodiment is composed of a plurality of finned tubes 1 which are arranged in parallel at a certain distance from each other, each finned tube 1 includes a base tube 2 and a fin body 3 spirally wound on the surface of the base tube 2, the fin body 3 is integrally formed by a plurality of fins 31, each fin 31 includes a windward surface 311, a leeward surface 312 and two heat exchange surfaces 313 connecting the windward surface 311 and the leeward surface 312, the two heat exchange surfaces 311 of the fin 31 incline in the same direction along the axial direction of the base tube 1, the heat exchange surfaces 311 of two adjacent fins 31 are in contact with each other, the windward surface 311 and the leeward surface 312 are kept perpendicular to the axial direction of the base tube 2, it is ensured that a plurality of narrow gaps can be formed between the adjacent fins 21 and the base pipe 2. The width of the outer side of the inclined fin 31 is smaller than the diameter of the outer circle of the fin 31, so that the arrangement distance of the fin tubes 1 can be reduced, and the gap between the fins 31 on the outermost side of the adjacent fin tubes 1 can be set to be 2-20mm as required, therefore, under the condition of the same heating area, the volume of the flue gas condenser can be smaller, a plurality of fin tubes 1 can form a fin tube bundle which is densely arranged, flue gas is basically divided into a plurality of narrow flowing spaces by the fins 31 and the base tube 2, the boundary layer of the outer surface of the heat exchange tube is reduced, the temperature of the flue gas can be rapidly reduced on a short flue gas flow, and the heat efficiency is improved; when the flue gas flows through the inclined fins 31, the flue gas flows in each narrow gap, so that the eddy current area at the rear part of the base tube 1 is reduced, and the heat exchange efficiency is improved. The finned tube 1 can be a high-frequency welding finned tube, a laser welding stainless steel finned tube or an extrusion type steel-aluminum composite finned tube.
In order to further improve the heat exchange efficiency, the compact flue gas condenser of this embodiment is provided with a first air distribution plate 41 on the top of the windward surface 311 of the fin 31, a second air distribution plate 42 on the top of the leeward surface 312 of the fin 31, and the inner walls of the first air distribution plate 41 and the second air distribution plate 42 are not in contact with the fin 31. As a preferred embodiment, the first wind distribution plate 41 has a wave-shaped structure matching with the edge of the windward side 311, and the second wind distribution plate 42 has a wave-shaped structure matching with the edge of the leeward side 312. Due to the arrangement of the first air distribution plate 41 and the second air distribution plate 42, the flue gas is flushed in the condenser more uniformly; the residence time of the flue gas in the condenser is prolonged, so that the heat exchange efficiency can be improved.
In order to further plan the flow space of the flue gas and reduce the vortex area on the back of the heat exchange tube, the compact flue gas condenser of the embodiment is provided with elongated guide holes 5 for the flue gas to pass through, in the first air distribution plate 41 and the second air distribution plate 42, as shown in fig. 2, the guide holes 5 of the first air distribution plate 41 are located right above the finned tube 1, and the guide holes 5 of the second air distribution plate 42 are located right below the finned tube 1.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. A compact flue gas condenser which is characterized in that: compact flue gas condenser comprises a plurality of fin tubes (1) of certain interval and parallel arrangement each other, every fin tube (1) includes parent tube (2) and is spiral winding fin body (3) on parent tube (2) surface, fin body (3) are by a plurality of fins (31) integrated into one piece, every fin (31) all include windward side (311), leeward side (312) and connect two heat transfer face (313) of windward side (311) and leeward side (312), two heat transfer face (313) of fin (31) all incline to same direction along the axial of parent tube (2), and heat transfer face (313) the mutual contact of adjacent fin (31), windward side (311), leeward side (312) all with parent tube (2) axial vertical.
2. A compact flue gas condenser according to claim 1, characterized in that: among the plurality of finned tubes (1), the gaps between the outermost fins (31) of the adjacent finned tubes (1) are 2-20 mm.
3. A compact flue gas condenser according to claim 1, characterized in that: the top of the windward side (311) of the fin (31) is provided with a first air distribution plate (41), the top of the leeward side (312) of the fin (31) is provided with a second air distribution plate (42), and the inner walls of the first air distribution plate (41) and the second air distribution plate (42) are not in contact with the fin (31).
4. A compact flue gas condenser according to claim 3 wherein: the first air distribution plate (41) and the second air distribution plate (42) are provided with slender flow guide holes (5) through which smoke can pass.
5. A compact flue gas condenser according to claim 4 wherein: the first air distribution plate (41) is of a wave-shaped structure matched with the edge of the windward side (311), and the second air distribution plate (42) is of a wave-shaped structure matched with the edge of the leeward side (312).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121556278.9U CN215114140U (en) | 2021-07-09 | 2021-07-09 | Compact flue gas condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121556278.9U CN215114140U (en) | 2021-07-09 | 2021-07-09 | Compact flue gas condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215114140U true CN215114140U (en) | 2021-12-10 |
Family
ID=79314740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121556278.9U Active CN215114140U (en) | 2021-07-09 | 2021-07-09 | Compact flue gas condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215114140U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116624869A (en) * | 2023-07-24 | 2023-08-22 | 无锡派诺尼奥工业设备有限公司 | Low nitrogen emission's grate finned tube |
-
2021
- 2021-07-09 CN CN202121556278.9U patent/CN215114140U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116624869A (en) * | 2023-07-24 | 2023-08-22 | 无锡派诺尼奥工业设备有限公司 | Low nitrogen emission's grate finned tube |
| CN116624869B (en) * | 2023-07-24 | 2023-10-03 | 无锡派诺尼奥工业设备有限公司 | Low nitrogen emission's grate finned tube |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |