CN219693293U - Boiler air preheater with automatic ash removal and heat transfer enhancement functions - Google Patents
Boiler air preheater with automatic ash removal and heat transfer enhancement functions Download PDFInfo
- Publication number
- CN219693293U CN219693293U CN202320764596.7U CN202320764596U CN219693293U CN 219693293 U CN219693293 U CN 219693293U CN 202320764596 U CN202320764596 U CN 202320764596U CN 219693293 U CN219693293 U CN 219693293U
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- CN
- China
- Prior art keywords
- heat exchange
- air
- connecting box
- preheater
- heat transfer
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- 238000004140 cleaning Methods 0.000 claims abstract description 20
- 239000000779 smoke Substances 0.000 claims abstract description 8
- 238000005192 partition Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002956 ash Substances 0.000 description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 9
- 239000003546 flue gas Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000002918 waste heat Substances 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
- Air Supply (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to the technical field of heat exchange equipment and discloses a boiler air preheater with automatic ash removal and heat transfer enhancement functions, which comprises a preheater shell, wherein an air inlet and an air outlet are formed in one side of the preheater shell, an air guide channel is formed in one side of the preheater shell, the bottom of the preheater shell is connected with a connecting box, the connecting box is communicated with the interior of the preheater shell, a smoke outlet is formed in one side of the connecting box, a plurality of heat exchange tubes are arranged in the preheater shell, mounting columns are movably arranged in the heat exchange tubes, a plurality of cleaning rings are fixed on the mounting columns at equal intervals, the cleaning rings and the inner wall of the heat exchange tubes are respectively extended into the connecting box, the lower ends of the mounting columns are fixedly provided with the same connecting frame, and a reciprocating lifting mechanism is arranged in the preheater shell. According to the utility model, the heat exchange tube is actively cleaned, the cleaning effect is improved, ash is not adhered to the inner wall of the heat exchange tube, and the heat transfer efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of heat exchange equipment, and particularly relates to a boiler air preheater with automatic ash removal and heat transfer enhancement functions.
Background
The air preheater is an important component of waste heat recovery equipment in a boiler flue gas system, flue gas heat energy is transferred to cold air by a flue gas pipe wall, however, ash content in boiler flue gas is large, when flue gas and air are used for heat exchange, ash accumulation phenomenon is easy to occur, even coal ash blockage occurs, flue gas dredging is hindered, and the flue gas temperature of a boiler is too high, so that the heat exchange efficiency of equipment is affected.
The retrieved CN209431457U discloses a boiler air preheater with automatic ash removal and heat transfer enhancement functions, and relates to the technical field of heat exchanger manufacturing, comprising the use of an external thread pipe as a heat exchange pipe; an ash removing spring is inserted into the heat exchange tube; the flow of the high-temperature flue gas in the pipe is regulated by using a control valve, so that periodic fluctuation is realized, and the interpolation ash removal spring is driven to vibrate; two flow guide plates with different structural sizes are used for improving the distribution condition of an air flow field in the air steering room. Compared with the prior art, the utility model has the advantages of simple structure and strong applicability, can effectively avoid the ash accumulation phenomenon, improves the heat exchange efficiency of cold and hot fluid and improves the flow field distribution, and compared with the traditional air preheater.
But the present inventors have found that this technical solution still has at least the following drawbacks:
in the above patent, the spring is arranged in the heat exchange tube, the inner wall of the heat exchange tube is cleaned by utilizing the deformation of the spring, the cleaning effect is poor, and the spring is required to be cleaned after being adhered with ash for a long time, so that the spring is inconvenient to clean.
The present utility model has been made in view of this.
Disclosure of Invention
Therefore, the utility model aims to provide the boiler air preheater with the functions of automatically removing ash and enhancing heat transfer, so as to solve the problem that the inner wall of the heat exchange tube is inconvenient to clean in the prior art.
Based on the above purpose, the utility model provides the boiler air preheater with automatic ash removal and enhanced heat transfer functions.
The utility model provides an automatic deashing and heat transfer function's boiler air heater strengthens, includes the pre-heater casing, pre-heater casing one side is equipped with air inlet, gas outlet, and one side is equipped with the air duct in the pre-heater casing, the air is got into the back by the air duct and is discharged by the gas outlet again, be equipped with the division board between air inlet, the gas outlet in the pre-heater casing, and pre-heater casing upper portion is equipped with into the mouth of cigarette, pre-heater casing bottom is connected with the spread box, and the spread box is linked together with pre-heater casing inside, spread box one side is equipped with out the mouth of cigarette, the arrangement is equipped with a plurality of heat exchange tubes in the pre-heater casing, all move about in the heat exchange tube and be equipped with the erection column, equally spaced a plurality of clearance rings on the erection column, clearance ring and heat exchange tube inner wall, the erection column lower extreme all extends to the spread box in, and a plurality of erection column lower extreme is fixed with same connecting frame, connecting frame one side is fixed with the connecting rod, the bar groove is opened to connecting rod one side, and the other end passes the bar groove, be equipped with lifting mechanism in the pre-heater casing, reciprocating lifting mechanism is used for driving the connecting rod through reciprocating lifting and lifting.
As a preferred embodiment of the present utility model, an upper mounting plate and a lower mounting plate are respectively fixed at the upper side and the lower side in the preheater shell, two ends of a plurality of heat exchange tubes are respectively fixed between the upper mounting plate and the lower mounting plate, and the heat exchange tubes penetrate through the partition plate.
In a preferred embodiment of the present utility model, both ends of one side of the connection frame are provided with a first guide post in a penetrating and sliding manner, and both ends of the first guide post are fixed to the inner wall of the connection box.
As a preferred embodiment of the utility model, the reciprocating lifting mechanism comprises a rotating shaft, the rotating shaft is arranged in the air guide channel, a plurality of fan blades are arranged at the upper end of the rotating shaft, the lower end of the rotating shaft penetrates through the bottom of the preheater shell and is fixedly provided with a reciprocating screw rod, a moving block is sleeved on the reciprocating screw rod, a telescopic clamping block is arranged on one side of the moving block, a reset spring is arranged between the telescopic clamping block and the moving block, and the telescopic clamping block is matched with one end of the connecting rod.
As a preferable implementation mode of the utility model, the air guide channel is internally fixed with the air collecting cover, and the fan blades are arranged at the gathering end of the air collecting cover.
As a preferable implementation mode of the utility model, a fixed plate is fixed on one side of the connecting box, the lower end of the reciprocating screw rod is rotatably arranged on the fixed plate, a plurality of guide pins are fixed on the fixed plate, and the guide pins penetrate through the moving block and are in sliding connection with the moving block.
As a preferable implementation mode of the utility model, the outer wall of the cleaning ring is in a chamfer structure, a second guide post is fixed on one side of the connecting box, and the second guide post penetrates through the connecting rod and is connected with the connecting rod in a sliding way.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, the plurality of cleaning rings arranged in the heat exchange tube are matched with the connecting frame and the reciprocating lifting mechanism, so that after the device is started, smoke enters through the smoke inlet and passes through the plurality of heat exchange tubes and is discharged through the smoke outlet, the heat exchange tubes are heated at the moment, air enters through the air inlet and is discharged through the air outlet after passing through the air guide channel, the air is preheated, and during operation, the connecting frame is driven to reciprocate in the connecting box by the reciprocating lifting mechanism, so that the plurality of cleaning rings scrape the inner wall of the heat exchange tubes, the active cleaning of the heat exchange tubes is realized, the cleaning effect is improved, the inner wall of the heat exchange tube is free from adhering soot, and the heat transfer efficiency is improved.
The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.
Drawings
In the drawings:
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic plan sectional view of the present utility model;
FIG. 3 is a schematic perspective view of a heat exchange tube according to the present utility model;
FIG. 4 is a schematic view of a cleaning ring and a connecting frame of the present utility model;
FIG. 5 is a schematic view of a purge ring according to the present utility model;
fig. 6 is a schematic diagram of a three-dimensional structure of a moving block and a reciprocating screw of the present utility model.
In the figure: 1. a preheater housing; 2. an air outlet; 3. an air inlet; 4. a smoke inlet; 5. a smoke outlet; 6. a connection box; 7. a heat exchange tube; 8. an air guide channel; 9. a wind collecting hood; 10. a rotating shaft; 11. a moving block; 12. a reciprocating screw rod; 13. a connection frame; 14. an upper mounting plate; 15. a lower mounting plate; 16. a mounting column; 17. a first guide post; 18. a connecting rod; 19. a second guide post; 20. cleaning the ring; 21. a fan blade; 23. a guide pin; 24. a fixing plate; 25. and (5) a telescopic clamping block.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model.
As shown in fig. 1 to 6, an automatic ash removal and heat transfer enhancement function boiler air preheater comprises a preheater shell 1, one side of the preheater shell 1 is provided with an air inlet 3 and an air outlet 2, one side in the preheater shell 1 is provided with an air guide channel 8, air enters from the air inlet 3 and is discharged from the air outlet 2 through the air guide channel 8, a partition plate is arranged between the air inlet 3 and the air outlet 2 in the preheater shell 1, an air inlet 4 is arranged on the upper portion of the preheater shell 1, the bottom of the preheater shell 1 is connected with a connecting box 6, the connecting box 6 is communicated with the inside of the preheater shell 1, one side of the connecting box 6 is provided with an air outlet 5, a plurality of heat exchange tubes 7 are arranged in the preheater shell 1, mounting columns 16 are movably arranged in the heat exchange tubes 7, a plurality of cleaning rings 20 are fixed on the mounting columns 16, the inner walls of the cleaning rings 20 and the heat exchange tubes 7 are all extended into the connecting box 6, the lower ends of the plurality of the mounting columns 16 are fixedly provided with the same connecting frame 13, one side of the connecting frame 13 is fixedly provided with a connecting rod 18, one side of the connecting box 6 is provided with a strip, the other end of the connecting rod 18 penetrates through the strip-shaped ring 20, the outer wall of the connecting box 1 is used for driving the lifting mechanism to lift the cleaning mechanism in the reciprocating mechanism, and the lifting mechanism is used for lifting the lifting mechanism to lift the cleaning mechanism to realize the lifting mechanism, and the lifting mechanism is used for lifting the lifting and lifting the cleaning mechanism is used for lifting and lifting the cleaning mechanism.
An upper mounting plate 14 and a lower mounting plate 15 are respectively fixed on the upper side and the lower side in the preheater shell 1, two ends of a plurality of heat exchange tubes 7 are respectively fixed between the upper mounting plate 14 and the lower mounting plate 15, and the heat exchange tubes 7 penetrate through the partition plates.
The both ends of connecting frame 13 one side all run through the slip and are equipped with first guide post 17, and first guide post 17 both ends all are fixed in the inner wall of junction box 6.
The reciprocating lifting mechanism comprises a rotating shaft 10, the rotating shaft 10 is arranged in an air guide channel 8, a plurality of fan blades 21 are arranged at the upper end of the rotating shaft 10, a reciprocating screw rod 12 is fixed at the lower end of the rotating shaft 10, a moving block 11 is sleeved on the reciprocating screw rod 12, a telescopic clamping block 25 is arranged on one side of the moving block 11, a reset spring is arranged between the telescopic clamping block 25 and the moving block 11, the telescopic clamping block 25 is matched with one end of a connecting rod 18, when air passes through the air guide channel 8, the fan blades 21 drive the rotating shaft 10 to rotate, the moving block 11 is driven to lift through the reciprocating screw rod 12, when the moving block 11 moves upwards, the telescopic clamping block 25 drives the connecting rod 18 to lift, the connecting rod 18 is extruded and retracted after rising to the tail end, the connecting rod 18 is released to freely fall, and the connecting frame 13 is improved to drive a plurality of mounting columns 16 to move downwards, so that the cleaning ring 20 scrapes the inside the heat exchange tube 7.
The air guide channel 8 is internally fixed with the air gathering cover 9, the fan blades 21 are arranged at the gathering end of the air gathering cover 9, the air gathering cover 9 concentrates the air flow, the wind speed is improved, and the fan blades 21 rotate rapidly.
A fixed plate 24 is fixed on one side of the connecting box 6, the lower end of the reciprocating screw rod 12 is rotatably arranged on the fixed plate 24, a plurality of guide pins 23 are fixed on the fixed plate 24, the guide pins 23 penetrate through the moving block 11 and are in sliding connection with the moving block, a second guide column 19 is fixed on one side of the connecting box 6, and the second guide column 19 penetrates through the connecting rod 18 and is in sliding connection with the connecting rod 18.
The implementation principle of the boiler air preheater with the automatic ash removal and heat transfer enhancement functions in the embodiment is as follows: during operation, flue gas enters through the flue inlet 4 and then is discharged through the flue outlet 5 after passing through the plurality of heat exchange tubes 7, at this time, the heat exchange tubes 7 are heated, air enters through the air inlet 3 and is discharged through the air outlet 2 after passing through the air guide channel 8, air is preheated, when the air passes through the air guide channel 8, the fan blades 21 drive the rotating shaft 10 to rotate through the flow rate of the air collecting cover 9 clamping blocks, the reciprocating screw rod 12 drives the moving block 11 to lift, when the moving block 11 moves upwards, the telescopic clamping block 25 drives the connecting rod 18 to lift, after the connecting rod 18 rises to the tail end, the telescopic clamping block 25 is extruded and retracted, the connecting rod 18 is released and falls freely, at this time, the connecting frame 13 is lifted to drive the plurality of mounting columns 16 to move downwards, so that the cleaning ring 20 scrapes and cleans the inside of the heat exchange tubes 7, and the moving block 11 continues to squeeze one end of the connecting rod 18 and holds in the lower part of the connecting rod, and reciprocates in this way, and continuously cleans the heat exchange tubes 7.
Claims (7)
1. The utility model provides an automatic deashing and reinforce boiler air heater of heat transfer function, includes pre-heater casing (1), its characterized in that, pre-heater casing (1) one side is equipped with air inlet (3), gas outlet (2), and one side is equipped with air guide channel (8) in pre-heater casing (1), the air is got into the back by air inlet (3) and is discharged by gas outlet (2) through air guide channel (8) again, be equipped with the division board between air inlet (3), gas outlet (2) in pre-heater casing (1), and pre-heater casing (1) upper portion is equipped with into smoke inlet (4), pre-heater casing (1) bottom is connected with connecting box (6), connecting box (6) are linked together with pre-heater casing (1) inside, connecting box (6) one side is equipped with out smoke outlet (5), pre-heater casing (1) internal arrangement is equipped with a plurality of heat exchange tubes (7), all be equipped with erection column (16) in the heat exchange tube (7) movably, a plurality of equal rings (20) of fixed with distance on erection column (16), clearance ring (20) and heat exchange tube (7) inner wall (16) are equipped with connecting box (16) and are all fixed to be connected with connecting box (13) one side (13) under the same, connecting box (13), one side of the connecting box (6) is provided with a bar-shaped groove, the other end of the connecting rod (18) penetrates through the bar-shaped groove, a reciprocating lifting mechanism is arranged in the preheater shell (1) and is used for driving the connecting frame (13) to reciprocate through the connecting rod (18).
2. The boiler air preheater with automatic ash removal and heat transfer enhancement functions according to claim 1, wherein an upper mounting plate (14) and a lower mounting plate (15) are respectively fixed on the upper side and the lower side in the preheater shell (1), two ends of the plurality of heat exchange tubes (7) are respectively fixed between the upper mounting plate (14) and the lower mounting plate (15), and the heat exchange tubes (7) penetrate through the partition plates.
3. The boiler air preheater with automatic ash removal and heat transfer enhancement functions according to claim 1, wherein the two ends of one side of the connecting frame (13) are provided with first guide posts (17) in a penetrating and sliding manner, and the two ends of the first guide posts (17) are fixed on the inner wall of the connecting box (6).
4. The boiler air preheater with automatic ash removal and heat transfer enhancement functions according to claim 1, wherein the reciprocating lifting mechanism comprises a rotating shaft (10), the rotating shaft (10) is arranged in an air guide channel (8), a plurality of fan blades (21) are arranged at the upper end of the rotating shaft (10), the lower end of the rotating shaft (10) penetrates through the bottom of the preheater shell (1) and is fixedly provided with a reciprocating screw rod (12), a moving block (11) is sleeved on the reciprocating screw rod (12), a telescopic clamping block (25) is arranged on one side of the moving block (11), a reset spring is arranged between the telescopic clamping block (25) and the moving block (11), and the telescopic clamping block (25) is matched with one end of a connecting rod (18).
5. The boiler air preheater with automatic ash removal and heat transfer enhancement functions according to claim 4, wherein a wind collecting cover (9) is fixed in the air guide channel (8), and the fan blades (21) are arranged at the gathering end of the wind collecting cover (9).
6. The boiler air preheater with automatic ash removal and heat transfer enhancement functions according to claim 4, wherein a fixing plate (24) is fixed on one side of the connecting box (6), the lower end of the reciprocating screw rod (12) is rotatably arranged on the fixing plate (24), a plurality of guide pins (23) are fixed on the fixing plate (24), and the guide pins (23) penetrate through the moving block (11) and are in sliding connection with the moving block.
7. The boiler air preheater with automatic ash removal and heat transfer enhancement functions according to claim 1, wherein a circle of outer wall of the cleaning ring (20) is of a chamfer structure, a second guide post (19) is fixed on one side of the connecting box (6), and the second guide post (19) penetrates through the connecting rod (18) and is in sliding connection with the connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320764596.7U CN219693293U (en) | 2023-04-10 | 2023-04-10 | Boiler air preheater with automatic ash removal and heat transfer enhancement functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320764596.7U CN219693293U (en) | 2023-04-10 | 2023-04-10 | Boiler air preheater with automatic ash removal and heat transfer enhancement functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219693293U true CN219693293U (en) | 2023-09-15 |
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ID=87966437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320764596.7U Active CN219693293U (en) | 2023-04-10 | 2023-04-10 | Boiler air preheater with automatic ash removal and heat transfer enhancement functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219693293U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118517954A (en) * | 2024-07-24 | 2024-08-20 | 满洲里达赉湖热电有限公司 | Ash removing device for heat pipe wall |
-
2023
- 2023-04-10 CN CN202320764596.7U patent/CN219693293U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118517954A (en) * | 2024-07-24 | 2024-08-20 | 满洲里达赉湖热电有限公司 | Ash removing device for heat pipe wall |
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