CN220229253U - Self-cleaning tubular air preheater - Google Patents
Self-cleaning tubular air preheater Download PDFInfo
- Publication number
- CN220229253U CN220229253U CN202321940965.XU CN202321940965U CN220229253U CN 220229253 U CN220229253 U CN 220229253U CN 202321940965 U CN202321940965 U CN 202321940965U CN 220229253 U CN220229253 U CN 220229253U
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- Prior art keywords
- washing liquid
- heat exchange
- inlet
- pipeline
- self
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- 238000004140 cleaning Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 111
- 238000005406 washing Methods 0.000 claims abstract description 74
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000003546 flue gas Substances 0.000 claims abstract description 25
- 238000011010 flushing procedure Methods 0.000 claims description 40
- 239000000779 smoke Substances 0.000 claims description 20
- 239000012530 fluid Substances 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 23
- 239000007921 spray Substances 0.000 abstract description 11
- 238000013461 design Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 19
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model belongs to the technical field of structural design of tubular air preheaters, and particularly relates to a self-cleaning tubular air preheater which comprises a tubular box, wherein a left sealing plate and a right sealing plate are respectively connected to the left end and the right end of the tubular box, an air inlet and an air outlet are respectively connected to the left sealing plate and the right sealing plate, a plurality of heat exchange tubes are connected between the left sealing plate and the right sealing plate, a flue gas inlet and a flue gas outlet are respectively arranged at the left end and the right end of the side wall of the tubular box, a liquid outlet is arranged at the bottom of the side wall of the tubular box, a plurality of washing liquid pipelines and a plurality of washing liquid pipelines are connected to the inner side wall of the tubular box, a plurality of washing liquid spray heads are connected to the washing liquid pipelines, a main washing liquid pipeline is connected to the washing liquid spray heads, and the main washing liquid pipeline is connected to the washing liquid inlet. The utility model can prevent the heat exchange tube from being blocked, and has convenient cleaning and maintenance operations.
Description
Technical Field
The utility model relates to a self-cleaning tubular air preheater, and belongs to the technical field of structural design of tubular air preheaters.
Background
The air preheater is a heating surface for preheating air before entering a boiler to a certain temperature through internal cooling fins by flue gas in a boiler tail flue, and is equipment for improving the heat exchange performance of the boiler and reducing energy consumption. Air preheaters are generally classified into plate type, rotary type and tubular type. Among them, the tubular air preheater is widely used in utility boilers and industrial boilers because of its advantages of good sealability, high heat transfer efficiency, easy manufacture and processing, etc. The traditional tubular air preheater comprises a tube box, wherein a plurality of middle tube plates are arranged in the tube box, and a plurality of heat exchange tubes are connected between the middle tube plates. When in use, the flue gas passes through the preheater up and down along the heat exchange tube, and the air transversely passes through the preheater to complete heat conduction. Because the flue gas passes through the heat exchange tube, the heat exchange tube is easy to be blocked by smoke dust and difficult to clean.
Therefore, the utility model patent of Chinese patent No. CN202223592852.3 discloses a tubular air preheater capable of being efficiently cleaned and maintained, which comprises a box body, wherein the middle part of the left end and the middle part of the right end of the box body are respectively communicated with a flue gas inlet and a flue gas outlet, the tubular air preheater further comprises two groups of rotating shafts, a plurality of groups of dust collecting plates and a plurality of groups of flow pipes, the left part of the box body is provided with an air inlet chamber, the middle part of the box body is provided with a preheating chamber, the right part of the box body is provided with an exhaust chamber, the two groups of rotating shafts are respectively rotatably arranged at the upper part and the lower part of the air inlet chamber, the plurality of groups of dust collecting plates are respectively rotatably arranged on the circumferential side walls of the two groups of rotating shafts, dust collecting nets are respectively arranged on each group of dust collecting plates, the left end and the right end of the preheating chamber are respectively communicated with a plurality of groups of mounting holes, the plurality of flow pipes are respectively arranged in the preheating chamber, and the left side of the top end and the right side of the preheating chamber are respectively communicated with an air inlet and an air outlet.
Although the dust collecting plate can be used for collecting dust to reduce the dust accumulation probability in the heat exchange tube, dust still passes through the heat exchange tube and can still cause the blockage phenomenon of the heat exchange tube, and when the heat exchange tube is blocked, equipment is required to be disassembled, and then the heat exchange tube can be cleaned and maintained, so that the operation is very inconvenient.
Disclosure of Invention
According to the defects in the prior art, the technical problems to be solved by the utility model are as follows: the self-cleaning tubular air preheater can prevent the heat exchange tube from being blocked and is convenient for cleaning and maintaining the heat exchange tube.
The self-cleaning type tubular air preheater comprises a pipe box, wherein the left end and the right end of the pipe box are respectively connected with a left sealing plate and a right sealing plate, an air inlet and an air outlet are respectively connected to the left sealing plate and the right sealing plate, a plurality of heat exchange pipes are connected between the left sealing plate and the right sealing plate, the left end and the right end of each heat exchange pipe are respectively communicated with the air inlet and the air outlet, the left end and the right end of the side wall of the pipe box are respectively provided with a smoke inlet and a smoke outlet, the bottom of the side wall of the pipe box is provided with a liquid outlet, the inner side wall of the pipe box is connected with a plurality of washing liquid pipelines and a plurality of washing liquid pipelines, each washing liquid pipeline is connected with a main washing liquid pipeline, each washing liquid pipeline is connected with a washing liquid inlet, each washing liquid pipeline is connected with a plurality of spray heads, and each washing liquid pipeline is connected with a main washing liquid pipeline, and the main washing liquid pipeline is connected with a washing liquid inlet.
Preferably, a plurality of clapboards perpendicular to the heat exchange tubes are connected in the tube box, and a smoke steering opening is arranged between each clapboard and the inner side wall of the tube box.
Preferably, the branch washing liquid pipelines and the branch flushing liquid pipelines are uniformly distributed in the pipe box in a staggered way.
Preferably, the pipe box is provided with an access hole, and a sealing cover is connected to the corresponding access hole.
Preferably, the main washing liquid pipeline is annular, and the main washing liquid pipeline is connected to the inner side wall of the pipe box, and the washing liquid inlet extends out of the pipe box.
Preferably, the main flushing fluid pipeline is annular, and the main flushing fluid pipeline is connected to the inner side wall of the pipe box, and the flushing fluid inlet extends out of the pipe box.
Working principle and process:
when the device is used, air enters through the air inlet, then enters the air outlet through the heat exchange pipe, then reaches a destination through the air outlet, meanwhile, high-temperature flue gas enters the pipe box through the flue gas inlet, and heat exchange is carried out between the high-temperature flue gas and the air through the heat exchange pipe, so that the air is preheated, and the flue gas after heat exchange is discharged to the next working procedure through the flue gas outlet; because the high-temperature flue gas only flows from the outside of the heat exchange tube, the heat exchange tube is not easy to be blocked because clean air is only passed through the heat exchange tube, when the heat exchange tube is used for producing external bonding smoke dust, a washing liquid inlet is firstly opened, washing liquid enters a main washing liquid pipeline through the washing liquid inlet and then enters each washing liquid pipeline, then sprayed through each washing liquid spray nozzle, the sprayed washing liquid is combined with the smoke dust bonded outside the heat exchange tube, so that the bonded smoke dust is dissolved, then a flushing liquid inlet is opened, the flushing liquid enters the main flushing liquid pipeline through the flushing liquid inlet and then enters each flushing liquid pipeline, then the flushing liquid is sprayed through each flushing liquid spray nozzle to flush the heat exchange tube, and the generated waste liquid is discharged through a liquid outlet.
Compared with the prior art, the utility model has the following beneficial effects:
according to the self-cleaning tubular air preheater disclosed by the utility model, only air and no smoke are introduced into the heat exchange tube, so that the heat exchange tube cannot be blocked; when the external smoke dust of the heat exchange tube is adhered, the exterior of the heat exchange tube can be cleaned and maintained only by opening the washing liquid inlet and the flushing liquid inlet, equipment is not required to be disassembled, and the operation is very convenient.
Drawings
FIG. 1 is a cross-sectional view of the present utility model;
FIG. 2 is a schematic diagram showing the distribution of the branch washing liquid pipeline and the branch flushing liquid pipeline according to the present utility model.
In the figure: 1. an air inlet; 2. a main flushing fluid pipe; 3. a left sealing plate; 4. a flue gas inlet; 5. a tube box; 6. an access opening; 7. sealing cover; 8. a partition plate; 9. a heat exchange tube; 10. a flue gas outlet; 11. an air outlet; 12. a right sealing plate; 13. a flushing fluid inlet; 14. a main wash liquid conduit; 15. a washing liquid inlet; 16. a liquid outlet; 17. a branch washing liquid pipeline; 18. a washing liquid spray head; 19. a branch flushing liquid pipeline; 20. a flushing liquid spray head.
Detailed Description
Embodiments of the utility model are further described below with reference to the accompanying drawings:
example 1:
as shown in fig. 1 and 2, the self-cleaning tubular air preheater according to the present utility model comprises a tubular case 5, wherein the left and right ends of the tubular case 5 are respectively connected with a left sealing plate 3 and a right sealing plate 12, the left sealing plate 3 and the right sealing plate 12 are respectively connected with an air inlet 1 and an air outlet 11, a plurality of heat exchange tubes 9 are connected between the left sealing plate 3 and the right sealing plate 12, the left and right ends of the heat exchange tubes 9 are respectively communicated with the air inlet 1 and the air outlet 11, the left and right ends of the side wall of the tubular case 5 are respectively provided with a flue gas inlet 4 and a flue gas outlet 10, the bottom of the side wall of the tubular case 5 is provided with a liquid outlet 16, the inner side wall of the tubular case 5 is connected with a plurality of washing liquid pipelines 17 and a plurality of washing liquid pipelines 19, each washing liquid pipeline 17 is connected with a plurality of washing liquid spray heads 18, each washing liquid pipeline 17 is connected with a main washing liquid pipeline 14, the main washing liquid pipeline 14 is connected with a washing liquid inlet 15, each washing liquid pipeline 19 is connected with a plurality of washing liquid spray heads 20, and each washing liquid pipeline 19 is connected with a main washing liquid pipeline 2, and the main washing liquid pipeline 2 is connected with a washing liquid inlet 13.
Working principle and process:
when the device is used, air enters through the air inlet 1, then enters the air outlet 11 through the heat exchange tube 9, then reaches a destination through the air outlet 11, meanwhile, high-temperature flue gas enters the tube box 5 through the flue gas inlet 4, and heat exchange is carried out between the high-temperature flue gas and the air through the heat exchange tube 9, so that the preheating of the air is realized, and the flue gas after heat exchange is discharged to the next working procedure through the flue gas outlet 10; because the high-temperature flue gas only flows from the outside of the heat exchange tube 9, clean air only passes through the heat exchange tube 9, the heat exchange tube 9 is not easy to block, when the heat exchange tube 9 is used for producing time to cause the outside of the heat exchange tube 9 to adhere to smoke dust, the washing liquid inlet 15 is firstly opened, the washing liquid enters the main washing liquid pipeline 14 through the washing liquid inlet 15 and then enters each washing liquid pipeline 17, then the washing liquid is sprayed through each washing liquid spray nozzle 18, the sprayed washing liquid is combined with the smoke dust adhered to the outside of the heat exchange tube 9, so that the adhered smoke dust is dissolved, then the flushing liquid inlet 13 is opened, the flushing liquid enters the main flushing liquid pipeline 2 through the flushing liquid inlet 13 and then enters each flushing liquid pipeline 19, then the flushing liquid is sprayed through each flushing liquid spray nozzle 20, the washing liquid on the heat exchange tube 9 is flushed, the generated waste liquid is discharged through the liquid drain port 16, and the flushing liquid can be preferentially selected as hot water, and the flushing effect is better.
Compared with the prior art, the utility model has the following beneficial effects:
according to the self-cleaning tubular air preheater disclosed by the utility model, only air and no smoke are introduced into the heat exchange tube 9, so that the heat exchange tube 9 is not blocked; when the external smoke dust of the heat exchange tube 9 is adhered, the exterior of the heat exchange tube 9 can be cleaned and maintained only by opening the washing liquid inlet 15 and the flushing liquid inlet 13, the equipment is not required to be disassembled, and the operation is very convenient.
Example 2:
as shown in fig. 1 and 2, on the basis of example 1,
preferably, the tube box 5 is internally connected with a plurality of baffle plates 8 which are vertical to the heat exchange tubes 9, a smoke steering opening is arranged between each baffle plate 8 and the inner side wall of the tube box 5, the baffle plates 8 can increase the stability of the heat exchange tubes 9 on one hand, and can prolong the travelling path of smoke on the other hand, the heat exchange time of the smoke and the air is prolonged, and the heat exchange efficiency is improved;
preferably, the branch washing liquid pipelines 17 and the branch flushing liquid pipelines 19 are uniformly distributed in the pipe box 5 in a staggered way, so that the structural layout is reasonable and the application effect is good;
preferably, the pipe box 5 is provided with an access hole 6, the corresponding access hole 6 is connected with a sealing cover 7, the arrangement of the access hole 6 is convenient for the maintenance of the inner structure of the pipe box 5 on one hand, and is convenient for observing the smoke dust bonding condition of the outer surface of the heat exchange pipe 9 on the other hand, and also can observe the smoke dust cleaning condition of the outer surface of the heat exchange pipe 9;
preferably, the main washing liquid pipeline 14 is annular, the main washing liquid pipeline 14 is connected to the inner side wall of the pipe box 5, and the washing liquid inlet 15 extends out of the pipe box 5, so that the structure layout is reasonable, and the application effect is good;
preferably, the main flushing fluid pipeline 2 is annular, and the main flushing fluid pipeline 2 is connected on the inside wall of the pipe box 5, and the flushing fluid inlet 13 stretches out of the pipe box 5, so that the structure layout is reasonable, and the application effect is good.
Specifically described are: in the description of the present utility model, the azimuth or positional relationship indicated by the terms "left", "right", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and do not require that the present utility model must be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.
Claims (6)
1. A self-cleaning tubular air preheater is characterized in that: including pipe case (5), both ends are connected with left shrouding (3) and right shrouding (12) respectively about pipe case (5), be connected with air inlet (1) and air outlet (11) on left shrouding (3) and right shrouding (12) respectively, be connected with a plurality of heat exchange tubes (9) between left shrouding (3) and right shrouding (12), both ends communicate air inlet (1) and air outlet (11) respectively about heat exchange tube (9), both ends are equipped with flue gas inlet (4) and flue gas outlet (10) respectively about the lateral wall of pipe case (5), the lateral wall bottom of pipe case (5) is equipped with leakage fluid dram (16), be connected with a plurality of washing liquid pipelines (17) and branch flushing liquid pipeline (19) on the inside wall of pipe case (5), all be connected with a plurality of washing liquid shower nozzles (18) on each branch washing liquid pipeline (17), all be connected with main washing liquid pipeline (14) each branch washing liquid pipeline (17), main washing liquid pipeline (14) are connected with washing liquid inlet (15), all be connected with flushing liquid (20) on each branch flushing liquid pipeline (19), all be connected with main flushing liquid (2) flushing liquid (19).
2. A self-cleaning tubular air preheater as set forth in claim 1, wherein: the inside of the tube box (5) is connected with a plurality of partition boards (8) which are vertical to the heat exchange tubes (9), and a smoke steering opening is arranged between each partition board (8) and the inner side wall of the tube box (5).
3. A self-cleaning tubular air preheater as set forth in claim 1, wherein: the branch washing liquid pipelines (17) and the branch flushing liquid pipelines (19) are uniformly distributed in the pipe box (5) in a staggered way.
4. A self-cleaning tubular air preheater as set forth in claim 1, wherein: the pipe box (5) on be equipped with access hole (6), correspond access hole (6) and be connected with sealed lid (7).
5. A self-cleaning tubular air preheater as set forth in any one of claims 1-4, wherein: the main washing liquid pipeline (14) is annular, the main washing liquid pipeline (14) is connected to the inner side wall of the pipe box (5), and the washing liquid inlet (15) extends out of the pipe box (5).
6. A self-cleaning tubular air preheater as set forth in claim 5, wherein: the main flushing fluid pipeline (2) is annular, the main flushing fluid pipeline (2) is connected to the inner side wall of the pipe box (5), and the flushing fluid inlet (13) extends out of the pipe box (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321940965.XU CN220229253U (en) | 2023-07-21 | 2023-07-21 | Self-cleaning tubular air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321940965.XU CN220229253U (en) | 2023-07-21 | 2023-07-21 | Self-cleaning tubular air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220229253U true CN220229253U (en) | 2023-12-22 |
Family
ID=89178120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321940965.XU Active CN220229253U (en) | 2023-07-21 | 2023-07-21 | Self-cleaning tubular air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220229253U (en) |
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2023
- 2023-07-21 CN CN202321940965.XU patent/CN220229253U/en active Active
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| GR01 | Patent grant |