CN107202334B - Boiler horizontal flue bottom deposition clearance system - Google Patents
Boiler horizontal flue bottom deposition clearance system Download PDFInfo
- Publication number
- CN107202334B CN107202334B CN201710575036.6A CN201710575036A CN107202334B CN 107202334 B CN107202334 B CN 107202334B CN 201710575036 A CN201710575036 A CN 201710575036A CN 107202334 B CN107202334 B CN 107202334B
- Authority
- CN
- China
- Prior art keywords
- ash
- shoveling
- dust
- horizontal flue
- ash shoveling
- 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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- 230000008021 deposition Effects 0.000 title claims description 6
- 239000000428 dust Substances 0.000 claims abstract description 94
- 239000004071 soot Substances 0.000 claims abstract description 33
- 238000007664 blowing Methods 0.000 claims description 28
- 238000004804 winding Methods 0.000 claims description 7
- 239000013013 elastic material Substances 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 7
- 239000003546 flue gas Substances 0.000 abstract description 7
- 238000003756 stirring Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000002956 ash Substances 0.000 description 63
- 230000005540 biological transmission Effects 0.000 description 5
- 241000208125 Nicotiana Species 0.000 description 3
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000010882 bottom ash Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
- F23J1/06—Mechanically-operated devices, e.g. clinker pushers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
- F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention aims to provide a dust collection and removal system at the bottom of a horizontal flue of a boiler, which is used for removing dust collected in the horizontal flue. The system comprises a horizontal flue, an ash shoveling device, a soot blower and a control system; the bottom end of the horizontal flue is provided with an ash shoveling moving groove; the beneficial effects of the invention are as follows: the dust shoveling device can thoroughly remove dust accumulated at the bottom end of the horizontal flue and push the dust to the soot blower; the soot blower can stir and float dust, so that the dust enters the dust collector at the rear end of the horizontal flue along with the flue gas flow in the horizontal flue.
Description
Technical Field
The invention relates to the technical field of flue cleaning devices, in particular to a boiler horizontal flue bottom dust deposit cleaning system.
Background
The horizontal flue of exhaust-heat boiler flue gas outlet is responsible for discharging the flue gas that produces in the boiler, and with the extension of time, can form a large amount of deposition in the flue bottom, and the existence of bottom deposition can make the flow area of flue reduce, and the velocity of flow of flue gas increases, shortens the life of flue and spare part.
Disclosure of Invention
The invention aims to provide a dust collection and removal system at the bottom of a horizontal flue of a boiler, which is used for removing dust collected in the horizontal flue.
The technical scheme adopted for solving the technical problems is as follows:
the system comprises a horizontal flue, an ash shoveling device, a soot blower and a control system; the bottom end of the horizontal flue is provided with an ash shoveling moving groove;
the ash shoveling device comprises an ash shoveling driving mechanism and an ash shoveling executing mechanism, the ash shoveling driving mechanism is arranged below the bottom end of the horizontal flue, the ash shoveling executing mechanism is positioned in the horizontal flue, an ash shoveling driving member is arranged at the lower end of the ash shoveling executing mechanism, and the ash shoveling driving member penetrates through the ash shoveling moving groove to be connected with the power output end of the ash shoveling driving mechanism;
the soot blower comprises a soot collecting tank, a dust winding mechanism and a dust blowing and floating mechanism, wherein the dust winding mechanism is arranged in the soot collecting tank, and an air outlet of the dust blowing and floating mechanism is communicated with the soot collecting tank;
the control system is electrically connected with the ash shoveling device and the ash blowing device respectively.
Further, the control system comprises a frequency converter, and the frequency converter is electrically connected with a driving motor of the dust blowing and floating mechanism.
Further, the ash shoveling executing mechanism is provided with an ash shoveling auxiliary mechanism.
Further, the ash shoveling executing mechanism comprises an ash shoveling plate, the rear end of the ash shoveling plate is hinged with a pull rod, and the lower end of the pull rod penetrates through the ash shoveling moving groove and is detachably connected with the ash shoveling driving mechanism.
Further, the ash shoveling auxiliary mechanism is arranged at the lower part of the front side of the ash shoveling plate and comprises an impeller, and an ash shoveling blade is arranged at the edge of the impeller.
Further, a pressure sensor is arranged at the bottom end of the inner cavity of the horizontal flue, and the pressure sensor is electrically connected with the control system.
Further, a brush is arranged in the dust shoveling moving groove, and the brush is made of elastic materials.
The beneficial effects of the invention are as follows:
according to the invention, whether the horizontal flue needs dust shoveling and soot blowing treatment or not can be automatically detected through the pressure sensor; the dust shoveling device can thoroughly remove dust accumulated at the bottom end of the horizontal flue and push the dust to the soot blower; the soot blower can stir and float dust in and out, so that the dust enters the dust collector at the rear end of the horizontal flue along with the flue gas flow in the horizontal flue;
the technical scheme of the invention has the advantages that: the ash shoveling executing mechanism can drive the ash shoveling plate to horizontally topple and erect by using the pull rod, so that the obstruction of the ash shoveling plate to the flow of a flue can be reduced; the ash shoveling auxiliary mechanism arranged in the ash shoveling device can break up the dust which is coagulated into blocks and scrape off the tobacco tar which is adhered to the inner cavity wall of the horizontal flue; the frequency converter that the dust in the soot blower blows and floats the mechanism setting can realize that the gas outlet that the dust blows and floats the mechanism spouts the air current of change to album ash tray, realizes blowing the effect to the dust better.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B;
in the figure: 1. a dust shoveling moving groove; 2. a base; 3. a screw rod; 4. driving a sliding block; 5. a dust shoveling driving motor; 6. executing a transmission rod; 7. an ash shoveling plate; 8. a pull rod; 9. an auxiliary ash shoveling impeller; 10. an auxiliary dust-shoveling blade; 11. an ash collecting groove; 12. a winding driving motor; 13. a hoisting impeller; 14. a nozzle; 15. an induced draft fan; 16. a blowing and floating driving motor; 17. a pressure sensor; 18. and a horizontal flue.
Detailed Description
As shown in fig. 1 to 3, a boiler horizontal flue bottom ash deposition removal system comprises a horizontal flue 18, an ash shoveling device, a soot blowing device and a control system; the dust shoveling device and the soot blower are both arranged on the horizontal flue 18, the dust shoveling device is used for shoveling dust and pushing the dust to the soot blower, deposited dust is blown up again by means of the soot blower, and deposited dust is carried out of the flue by means of hot smoke flowing in the horizontal flue 18 and finally enters the dust removing device at the outlet end of the horizontal flue 18.
The horizontal flue 18 comprises a dust shoveling moving groove 1, wherein the dust shoveling moving groove 1 penetrates through the bottom of the horizontal flue 18, and is used for passing through the dust shoveling device when the dust shoveling device works; two rows of parallel multilayer brushes are transversely arranged in the dust shoveling moving groove 1, and the brushes are made of elastic materials, so that smooth passing of the dust shoveling device can be ensured, and meanwhile dust in the horizontal flue 18 cannot fall off through the dust shoveling moving groove 1.
The dust shoveling device is used for shoveling dust deposited in the horizontal flue 18 and pushing the deposited dust to the soot blowing device, and comprises a dust shoveling driving mechanism, a dust shoveling executing mechanism and a dust shoveling auxiliary mechanism. The dust shoveling driving mechanism is used for driving the dust shoveling executing mechanism to move, and is arranged at the outer side of the bottom end of the horizontal flue 18 and comprises a driving base 2, a screw rod 3, a screw nut, a driving sliding block 4 and a dust shoveling driving motor 5; the device is characterized in that the driving base 2 is fixedly arranged at the bottom end of the horizontal flue 18, a driving sliding groove is formed in the upper end face of the driving base 2, two ends of the screw rod 3 are rotatably arranged at two ends of the driving base 2, the ash shoveling driving motor 5 is arranged at one end of the driving base 2, the power output end of the ash shoveling driving motor 5 is fixedly connected with the power input end of the screw rod 3, the screw rod 3 is in threaded connection with the screw rod, the driving sliding block 4 is fixedly connected with the screw rod, and two ends of the driving sliding block 4 are slidably arranged in the driving sliding groove.
The ash shoveling executing mechanism comprises an executing transmission rod 6, an ash shoveling plate 7 and a pull rod 8, wherein the lower end of the executing transmission rod 6 penetrates through the ash shoveling moving groove 1 and is fixedly connected with the upper end of the driving sliding block 4, the upper end of the executing transmission rod 6 is positioned in the horizontal flue 18, and the lower end of the ash shoveling plate 7 is hinged with the upper end of the executing transmission rod 6. The rear side end of the driving sliding block 4 is provided with a hanging buckle, the lower end of the pull rod 8 is provided with a hook, the hook is connected with the hanging buckle in a matched mode, and the upper end of the pull rod 8 is hinged to the rear side of the ash shoveling plate 7. When the ash shoveling works, the hook is connected with the hanging buckle, and the pull rod 8 is erected to drive the ash shoveling plate 7 to be erected; when the ash is not required to be shoveled, the hanging buckle and the hanging hook are detached, the pull rod 8 drives the ash shoveling plate 7 to horizontally topple, and therefore the obstruction of the ash shoveling plate 7 to the flue circulation can be reduced.
The ash shoveling auxiliary mechanism is arranged at the lower part of the front side of the ash shoveling plate 7 and comprises an auxiliary driving motor and an auxiliary ash shoveling impeller 9, the auxiliary driving motor is fixedly arranged at the front side of the ash shoveling plate 7, and a power output shaft of the auxiliary driving motor is fixedly connected with a rotating shaft of the auxiliary ash shoveling impeller 9; the auxiliary ash shoveling impeller 9 comprises an impeller rotating shaft and blades, and an auxiliary ash shoveling blade 10 is arranged at the outer ends of the blades along the axial direction of the impeller rotating shaft; when the auxiliary ash shoveling impeller 9 rotates, the blades can break up the agglomerated dust, and the auxiliary ash shoveling blade 10 can scrape off the tobacco tar adhered to the inner cavity wall of the horizontal flue 18.
The soot blower comprises a soot collecting groove 11, a dust winding mechanism and a dust blowing and floating mechanism, wherein the soot collecting groove 11 is positioned at the bottom end of the horizontal flue 18 and is used for collecting dust pushed by the soot shoveling device, and a soot collecting bottom plate is arranged at the bottom end of the soot collecting groove 11. The dust winding mechanism is arranged on the dust collecting bottom plate and is used for stirring dust in the dust collecting groove 11 so as to realize better blowing of the dust blowing and floating mechanism. The dust hoisting mechanism comprises a hoisting driving motor 12 and a hoisting impeller 13, the hoisting driving motor 12 is arranged on the lower side of the dust collecting bottom plate, the hoisting impeller 13 is arranged on the upper side of the dust collecting bottom plate, and the power output end of the hoisting driving motor 12 is connected with the power input end of the hoisting impeller 13; the winch impeller 13 comprises a winch driving chassis and a stirring shaft, and the stirring shaft is provided with a plurality of stirring shafts which are uniformly arranged on the driving chassis.
The dust blowing and floating mechanism comprises a nozzle 14 (an air outlet), an induced draft fan 15 and a blowing and floating driving motor 16, wherein the nozzle 14 is arranged on the dust collecting bottom plate, the nozzle 14 is communicated with the inner cavity of the dust collecting groove 11, and the nozzle 14 is provided with a plurality of nozzles which are uniformly arranged at the periphery of the dust collecting bottom plate; the nozzle 14 is used for blowing air flow into the ash collecting tank 11 to blow and float dust in the ash collecting tank 11, and the blown and floated dust enters the rear end dust removing device along with the flue gas flow in the horizontal flue 18; the rear end of the nozzle 14 is communicated with an air outlet of the induced draft fan 15 through a pipeline, and the power input end of the induced draft fan 15 is connected with the power input end of the blowing and floating driving motor 16.
The control system is used for detecting dust accumulation in the horizontal flue 18 and realizing intelligent control of the device, and comprises a pressure sensor 17, a frequency converter, a controller, a motor driving module, a control board and an alarm; the pressure sensor 17 is arranged at the bottom end of the inner cavity of the horizontal flue 18, the upper end face of the pressure sensor 17 is flush with the bottom end of the inner cavity of the horizontal flue 18, when dust in the horizontal flue 18 is gradually accumulated, the accumulated dust presses the pressure sensor 17, when the pressure reaches a certain value, the pressure sensor 17 sends a trigger signal to the controller, the controller starts the dust shoveling device and the soot blowing device to work after receiving the trigger signal, and simultaneously starts the alarm to send an alarm signal. The frequency converter is electrically connected with the blowing and floating driving motor 16 and is used for realizing the pulse work of the blowing and floating driving motor 16 so as to achieve the air flow which is sprayed out of the nozzle 14 and realize the better blowing and floating effect on dust. The controller adopts a PLC, the signal input end of the controller is respectively and electrically connected with the control board and the pressure sensor 17, and the control board is used for realizing the work of a manual control device of a worker; the signal output end of the controller is electrically connected with the frequency converter, the motor driving module and the alarm respectively; the motor driving module is respectively electrically connected with the dust shoveling driving motor, the auxiliary driving motor and the blowing floating driving motor.
The invention can automatically detect whether the horizontal flue 18 needs dust shoveling and soot blowing treatment or not through the pressure sensor 17; the dust shoveling device can thoroughly remove dust accumulated at the bottom end of the horizontal flue 18 and push the dust to the soot blower; the soot blower can stir and float the dust, so that the dust enters the dust removing device at the rear end of the horizontal flue 18 along with the flue gas flow in the horizontal flue 18. The technical scheme of the invention has the advantages that: the ash shoveling executing mechanism can drive the ash shoveling plate 7 to horizontally topple and erect by using the pull rod 8, so that the obstruction of the ash shoveling plate 7 to the flue flow can be reduced; the ash shoveling auxiliary mechanism arranged in the ash shoveling device can break up the dust which is condensed into blocks and scrape off the tobacco tar which is adhered to the inner cavity wall of the horizontal flue 18; the frequency converter that the dust in the soot blower blows and floats the mechanism setting can realize that nozzle 14 spouts the air current of change to album ash tray 11, realizes blowing the effect to the dust better.
Other than the technical features described in the specification, all are known to those skilled in the art.
While the foregoing description of the embodiments of the present invention has been presented with reference to the drawings, it is not intended to limit the scope of the invention, and on the basis of the technical solutions of the present invention, various modifications or variations can be made by those skilled in the art without the need of inventive effort, and still remain within the scope of the invention.
Claims (3)
1. The ash deposition removing system at the bottom of the horizontal flue of the boiler comprises the horizontal flue and is characterized by also comprising an ash shoveling device, a soot blowing device and a control system; the bottom end of the horizontal flue is provided with an ash shoveling moving groove;
the ash shoveling device comprises an ash shoveling driving mechanism and an ash shoveling executing mechanism, the ash shoveling driving mechanism is arranged below the bottom end of the horizontal flue, the ash shoveling executing mechanism is positioned in the horizontal flue, an ash shoveling driving member is arranged at the lower end of the ash shoveling executing mechanism, and the ash shoveling driving member penetrates through the ash shoveling moving groove to be connected with the power output end of the ash shoveling driving mechanism;
the soot blower comprises a soot collecting tank, a dust winding mechanism and a dust blowing and floating mechanism, wherein the dust winding mechanism is arranged in the soot collecting tank, and an air outlet of the dust blowing and floating mechanism is communicated with the soot collecting tank;
the control system is electrically connected with the ash shoveling device and the ash blowing device respectively;
the control system comprises a frequency converter, and the frequency converter is electrically connected with a driving motor of the dust blowing and floating mechanism;
the ash shoveling executing mechanism is provided with an ash shoveling auxiliary mechanism;
the ash shoveling executing mechanism comprises an ash shoveling plate, the rear end of the ash shoveling plate is hinged with a pull rod, and the lower end of the pull rod penetrates through the ash shoveling moving groove to be detachably connected with the ash shoveling driving mechanism;
the ash shoveling auxiliary mechanism is arranged at the lower part of the front side of the ash shoveling plate and comprises an impeller, and an ash shoveling blade is arranged at the edge of the impeller.
2. The ash removal system for the bottom of a horizontal flue of a boiler according to claim 1, wherein a pressure sensor is installed on the bottom end of the inner cavity of the horizontal flue, and the pressure sensor is electrically connected with the control system.
3. The system for removing deposited ash from the bottom of a horizontal flue of a boiler according to claim 1, wherein a brush is arranged in the ash shoveling moving groove, and the brush is made of elastic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710575036.6A CN107202334B (en) | 2017-07-14 | 2017-07-14 | Boiler horizontal flue bottom deposition clearance system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710575036.6A CN107202334B (en) | 2017-07-14 | 2017-07-14 | Boiler horizontal flue bottom deposition clearance system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107202334A CN107202334A (en) | 2017-09-26 |
| CN107202334B true CN107202334B (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710575036.6A Active CN107202334B (en) | 2017-07-14 | 2017-07-14 | Boiler horizontal flue bottom deposition clearance system |
Country Status (1)
| Country | Link |
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| CN (1) | CN107202334B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107869725B (en) * | 2017-11-09 | 2019-04-02 | 山东金力特管业有限公司 | A kind of flue cleaning system |
| CN108039253B (en) * | 2017-12-11 | 2020-08-18 | 湖南顶立科技有限公司 | Enameled wire depainting system |
| CN107855326B (en) * | 2017-12-12 | 2023-07-14 | 福州大学 | Flue descaling system and working method thereof |
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|---|---|---|---|---|
| JP2000154908A (en) * | 1990-12-28 | 2000-06-06 | Worldwide Patent Licensing Co Llc | Method and arrangement for removing ash containing water from pit |
| CN101672479A (en) * | 2009-07-29 | 2010-03-17 | 东方锅炉（集团）股份有限公司 | Sweeping device for dust deposit in flue |
| CN201785353U (en) * | 2010-07-21 | 2011-04-06 | 河北钢铁股份有限公司邯郸分公司 | Dust collector for small flue duct of coke oven |
| CN202561779U (en) * | 2012-05-16 | 2012-11-28 | 东南大学 | Dust cleaning device for heat exchange pipe of boiler flue |
| CN203469703U (en) * | 2013-09-11 | 2014-03-12 | 湖南麓南脱硫脱硝科技有限公司 | Ash removing and dust pre-removing device applicable to SCR (Selective Catalytic Reduction) denitrification system |
| CN104180379A (en) * | 2014-09-01 | 2014-12-03 | 华电电力科学研究院 | Soot blowing method and device for Pi-shaped boiler horizontal smoke channel |
| CN205269918U (en) * | 2015-12-21 | 2016-06-01 | 福州大学 | Traveling electrode electrostatic precipitator's polar plate ash removal device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102016476B (en) * | 2008-05-13 | 2016-12-07 | 煤烟技术股份公司 | Utilize the method that the condition in power boiler burner hearth measured by soot blower |
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2017
- 2017-07-14 CN CN201710575036.6A patent/CN107202334B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000154908A (en) * | 1990-12-28 | 2000-06-06 | Worldwide Patent Licensing Co Llc | Method and arrangement for removing ash containing water from pit |
| CN101672479A (en) * | 2009-07-29 | 2010-03-17 | 东方锅炉（集团）股份有限公司 | Sweeping device for dust deposit in flue |
| CN201785353U (en) * | 2010-07-21 | 2011-04-06 | 河北钢铁股份有限公司邯郸分公司 | Dust collector for small flue duct of coke oven |
| CN202561779U (en) * | 2012-05-16 | 2012-11-28 | 东南大学 | Dust cleaning device for heat exchange pipe of boiler flue |
| CN203469703U (en) * | 2013-09-11 | 2014-03-12 | 湖南麓南脱硫脱硝科技有限公司 | Ash removing and dust pre-removing device applicable to SCR (Selective Catalytic Reduction) denitrification system |
| CN104180379A (en) * | 2014-09-01 | 2014-12-03 | 华电电力科学研究院 | Soot blowing method and device for Pi-shaped boiler horizontal smoke channel |
| CN205269918U (en) * | 2015-12-21 | 2016-06-01 | 福州大学 | Traveling electrode electrostatic precipitator's polar plate ash removal device |
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| CN107202334A (en) | 2017-09-26 |
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