CN113701178B - Steam soot blowing system of boiler flue - Google Patents
Steam soot blowing system of boiler flue Download PDFInfo
- Publication number
- CN113701178B CN113701178B CN202110836984.7A CN202110836984A CN113701178B CN 113701178 B CN113701178 B CN 113701178B CN 202110836984 A CN202110836984 A CN 202110836984A CN 113701178 B CN113701178 B CN 113701178B
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- driving rod
- steam
- driving
- hammer
- pipe group
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- 239000004071 soot Substances 0.000 title claims abstract description 20
- 238000007664 blowing Methods 0.000 title claims abstract description 17
- 238000004140 cleaning Methods 0.000 claims abstract description 48
- 238000010009 beating Methods 0.000 claims abstract description 10
- 238000013016 damping Methods 0.000 claims abstract description 5
- 239000007921 spray Substances 0.000 claims description 8
- 210000004209 hair Anatomy 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 239000002781 deodorant agent Substances 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 15
- 239000000428 dust Substances 0.000 description 10
- 230000001680 brushing effect Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002893 slag 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
- 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)
- Cleaning In General (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention discloses a steam soot blowing system of a boiler flue, which comprises a bracket arranged outside the flue, wherein a hollow driving rod extending into the flue is arranged on the bracket, the upper part of the driving rod is connected with a first driving mechanism for driving the driving rod to rotate and a steam generating device communicated with the driving rod, and the lower part of the driving rod is provided with a first jet pipe group and a second jet pipe group which are communicated with the driving rod and distributed up and down; be located between first jet stack and the second jet stack on the actuating lever and be equipped with the mounting bracket, be equipped with the dwang on the mounting bracket and drive dwang pivoted second actuating mechanism, the both sides of dwang are equipped with first hammer and the second hammer of beating respectively, and the both sides of mounting bracket still are connected with first vibrating plate and second vibrating plate respectively through damping spring, and first hammer and first vibrating plate cooperation hammering are beaten to the second hammer and second vibrating plate cooperation hammering. The invention has the characteristics of comprehensive and thorough cleaning, high working efficiency and small damage to the boiler.
Description
Technical Field
The invention relates to a boiler treatment device of a thermal power plant, in particular to a steam soot blowing system of a boiler flue.
Background
During operation of the boiler, a large amount of ash is generated after combustion of the fuel. Part of the ash is left in the hearth and discharged in a slag discharge mode, and the other part of the ash enters the tail flue together with the high-temperature airflow. When the ash-carrying flue gas flows through each heat exchange surface of the tail flue, part of ash particles can be deposited on the heat exchange surfaces to form accumulated ash. For the heat exchange surface in the boiler, the most direct harm of accumulated ash is shown in reducing the heat exchange efficiency, and because the heat conductivity coefficient of ash is small, once the accumulated ash is accumulated on the convection heat exchange surface, the heat resistance of the heating surface is increased, the heat transfer is deteriorated, and the boiler efficiency is reduced.
The existing device for cleaning the heat exchange surface of the boiler generally adopts a steel brush to do reciprocating motion to clean the heat exchange surface in the boiler or adopts a vibrating hammer to hammer the heating surface, so that the heat exchange surface is integrally vibrated to achieve the aim of ash removal; the steel brush is adopted to clean the deposited dust on the heating surface, the cleaning surface is limited, and the cleaning is difficult to clean for parts such as smaller channel surfaces, curved surfaces and the like, so that dead angles are easy to clean, and the cleaning is not thorough; the accumulated ash on the heating surface is cleaned by adopting a hammering mode, the vibration position is single, the workload is large, the working efficiency is low, and the damage to the heating surface of the boiler is large. Therefore, the existing device for cleaning the deposited ash of the boiler by using the steel brush has the problems of incomplete and thorough cleaning, and the device for cleaning the deposited ash of the boiler by using hammering has the problems of single vibration position, low working efficiency and large damage to the boiler.
Disclosure of Invention
The invention aims to provide a steam soot blowing system of a boiler flue. The invention has the characteristics of comprehensive and thorough cleaning, high working efficiency and small damage to the boiler.
The technical scheme of the invention is as follows: the steam soot blowing system of the boiler flue comprises a bracket arranged outside the flue, wherein a hollow driving rod extending into the flue is arranged on the bracket, the upper part of the driving rod is connected with a first driving mechanism for driving the driving rod to rotate and a steam generating device communicated with the driving rod, and the lower part of the driving rod is provided with a first jet pipe group and a second jet pipe group which are communicated with the driving rod and distributed up and down; be located between first jet stack and the second jet stack on the actuating lever and be equipped with the mounting bracket, be equipped with the dwang on the mounting bracket and drive dwang pivoted second actuating mechanism, the both sides of dwang are equipped with first hammer and the second hammer of beating respectively, and the both sides of mounting bracket still are connected with first vibrating plate and second vibrating plate respectively through damping spring, and first hammer and first vibrating plate cooperation hammering are beaten to the second hammer and second vibrating plate cooperation hammering.
In the steam soot blowing system of the boiler flue, a fixing plate is fixedly connected to the driving rod above the first jet pipe group, an electric push rod for driving a mounting frame is arranged on the fixing plate, and the mounting frame is connected with the driving rod in an up-down sliding mode.
In the steam soot blowing system of the boiler flue, the U-shaped frames are arranged on two sides of the bottom of the mounting frame, the pushing air cylinder facing the inner wall of the flue is arranged on the U-shaped frames, and the cleaning brush component is connected to the pushing air cylinder.
In the foregoing steam soot blowing system of a boiler flue, the cleaning brush subassembly includes the mount pad of being connected with the piston rod that promotes the cylinder, is equipped with intermeshing's worm and worm wheel in the mount pad, and the worm wheel is driven through step motor and hold-in range, and the both ends of worm are equipped with the screw rod that the screw thread opposite direction is equipped with respectively, and equal threaded connection has the brush board on the screw rod, all is equipped with the spout on the both sides wall of U type frame, and the cooperation is connected with the slider on the spout, and the tip and the slider rotation of screw rod are connected.
In the steam soot blowing system of the boiler flue, bristles are arranged on the outer end face and the two side faces of the brush plate.
In the steam soot blowing system of the boiler flue, the first driving mechanism and the second driving mechanism are driven by a driving motor, a belt and a belt pulley.
In the steam soot blowing system of the boiler flue, a plurality of fixed shaft sleeves are arranged on the rotating rod, and the first striking hammer and the second striking hammer are arranged between the adjacent fixed shaft sleeves through movable shaft sleeves.
In the steam soot blowing system of the boiler flue, the soot adhering films and the cleaning brushes are distributed on the outer side walls of the first vibrating plate and the second vibrating plate at intervals.
In the foregoing steam soot blowing system for a boiler flue, the first jet pipe group and the second jet pipe group are distributed around the driving rod in the circumferential direction, the nozzles of the first jet pipe group are distributed obliquely downward in the vertical direction, and the nozzles of the second jet pipe group are distributed uniformly obliquely in the circumferential direction.
In the steam soot blowing system of the boiler flue, the bottom of the driving rod is rotationally connected with the soot receiving disc, the object placing disc is arranged above the soot receiving disc, the odor removing agent is arranged in the object placing disc, and the surface of the object placing disc is provided with the air holes.
Compared with the prior art, the first jet pipe group, the second jet pipe group, the first vibrating plate, the second vibrating plate and the brush plate can rotate, and the first vibrating plate, the second vibrating plate and the brush plate can move up and down, so that the cleaning position can be changed according to actual conditions, the comprehensive and thorough dust removal work can be performed on the inner wall of the flue, and the working efficiency is high; during cleaning, the ash deposited on the heating surface of the inner wall of the boiler is loosened and falls off to a certain extent by the steam of the first jet pipe group, then the first vibrating plate, the second vibrating plate, the first beating hammer and the second beating hammer are matched for hammering and brushing, so that the cleaning efficiency of the refractory ash deposited is greatly improved, and finally the second jet pipe group sprays the steam again, so that ash deposited on the heating surface is concentrated in an ash receiving tray, the ash is prevented from being attached to the heating surface again, the cleaning is thorough, and the secondary ash deposition is avoided;
further, the first vibrating plate and the second vibrating plate are respectively hammered back and forth through the first beating hammer and the second beating hammer, so that the first vibrating plate and the second vibrating plate are contacted with the heating surface to cause vibration of the heating surface, the vibration receiving surface is wide, the buffering effect is achieved, and the damage to the heating surface of the boiler is weakened. Therefore, the invention has the characteristics of comprehensive and thorough cleaning, high working efficiency and small damage to the boiler.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic structural view of the mounting bracket;
FIG. 3 is a schematic illustration of the connection of the rotary lever to the first and second hammers;
FIG. 4 is a schematic structural view of a cleaning brush assembly;
fig. 5 is a schematic structural view of the second vibration plate.
The marks in the drawings are: 1. a bracket; 11. a driving rod; 12. a first driving mechanism; 121. a driving motor; 122. a belt; 123. a belt pulley; 13. a steam generating device; 14. a first jet stack; 15. a second jet stack; 2. a mounting frame; 21. a rotating lever; 22. a first hammer; 23. a second striking hammer; 24. a damping spring; 25. a first vibration plate; 26. a second vibration plate; 261. an ash sticking film; 262. cleaning a hairbrush; 27. fixing the shaft sleeve; 28. a movable shaft sleeve; 3. a fixing plate; 31. an electric push rod; 32. a U-shaped frame; 33. a pushing cylinder; 34. a cleaning brush assembly; 4. a mounting base; 41. a worm; 42. a worm wheel; 43. a stepping motor; 44. a synchronous belt; 45. a screw; 46. brushing a plate; 47. a chute; 48. a slide block; 49. brushing; 5. an ash receiving tray; 51. a storage tray; 52. ventilation holes; 6. and (5) a flue.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not intended to be limiting.
Examples
As shown in fig. 1-5, a steam soot blowing system of a boiler flue comprises a bracket 1 arranged outside a flue 6, wherein a hollow driving rod 11 extending into the flue 6 is arranged on the bracket 1, a first driving mechanism 12 for driving the driving rod 11 to rotate and a steam generating device 13 communicated with the driving rod 11 are connected to the upper part of the driving rod 11, and a first jet pipe group 14 and a second jet pipe group 15 which are communicated with the driving rod 11 and distributed up and down are arranged at the lower part of the driving rod 11; the driving rod 11 is provided with a mounting frame 2 between the first jet pipe group 14 and the second jet pipe group 15, the mounting frame 2 is provided with a rotating rod 21 and a second driving mechanism for driving the rotating rod 21 to rotate, two sides of the rotating rod 21 are respectively provided with a first striking hammer 22 and a second striking hammer 23, two sides of the mounting frame 2 are also respectively connected with a first vibrating plate 25 and a second vibrating plate 26 through damping springs 24, the first striking hammer 22 is in hammering fit with the first vibrating plate 25, and the second striking hammer 23 is in hammering fit with the second vibrating plate 26.
The driving rod 11 is fixedly connected with a fixing plate 3 above the first jet pipe group 14, an electric push rod 31 for driving the mounting frame 2 is arranged on the fixing plate 3, and the mounting frame 2 is connected with the driving rod 11 in an up-down sliding mode.
The bottom both sides of mounting bracket 2 all are equipped with U type frame 32, are equipped with the promotion cylinder 33 towards flue 6 inner wall on the U type frame 32, are connected with cleaning brush subassembly 34 on the promotion cylinder 33.
The cleaning brush assembly 34 comprises a mounting seat 4 connected with a piston rod of the pushing cylinder 33, a worm 41 and a worm wheel 42 which are meshed with each other are arranged in the mounting seat 4, the worm wheel 42 is driven by a stepping motor 43 and a synchronous belt 44, two ends of the worm 41 are respectively provided with a screw 45 with opposite screw threads, brush plates 46 are connected to the screw 45 in a threaded mode, sliding grooves 47 are formed in two side walls of the U-shaped frame 32, sliding blocks 48 are connected to the sliding grooves 47 in a matched mode, and the end portions of the screw 45 are connected with the sliding blocks 48 in a rotating mode.
The brush plate 46 is provided with bristles 49 on the outer end surface and both side surfaces. The brush hair 49 on the outer end surface of the brush plate 46 is used for cleaning the dust deposit on the outer surface of the heated surface, the brush hair 49 on the two sides of the brush plate 46, the volume of the brush plate 46 is smaller than that of the first vibration plate 25 and the second vibration plate 26, the brush plate 46 can be penetrated into some narrow and concave positions, and the side surfaces of the narrow heated surface, particularly the gaps of the calandria, can be cleaned more thoroughly, deeply and comprehensively.
The first driving mechanism 12 and the second driving mechanism are driven by a driving motor 121, a belt 122 and a belt pulley 123. This is a structure common in the prior art and is therefore not described in detail herein.
The rotating rod 21 is provided with a plurality of fixed shaft sleeves 27, and the first striking hammer 22 and the second striking hammer 23 are arranged between the adjacent fixed shaft sleeves 27 through movable shaft sleeves 28. When the rotating rod 21 rotates, the first striking hammer 22 and the second striking hammer 23 can move between the two adjacent fixed shaft sleeves 27 to a certain extent through the movable shaft sleeves 28, so that the vibrating plate is hammered at different positions, key vibration points of the vibrating plate can deviate back and forth, the vibration receiving points on the heating surface are more uniform, and ash removal is more comprehensive.
The outer side walls of the first vibration plate 25 and the second vibration plate 26 are respectively provided with an ash adhering film 261 and a cleaning brush 262 at intervals. The ash sticking film 261 can be closely attached to the heating surface under the hammering action of the beating hammer, accumulated ash is removed, cleaning dead angles are reduced, the cleaning hairbrush 262 can enter between heat exchange calandria, cleaning of the heat exchange surface is further conducted, cleaning positions are enlarged, and good ash cleaning effect is achieved.
The first jet pipe group 14 and the second jet pipe group 15 are distributed around the drive rod 11 in the circumferential direction, the nozzles of the first jet pipe group 14 are distributed obliquely downward in the vertical direction, and the nozzles of the second jet pipe group 15 are distributed uniformly obliquely in the circumferential direction. The spray pipes of the first spray pipe group 14 are all distributed downwards in an inclined mode in the vertical direction, so that the air flow reaches all corners in the boiler, the cleaning range is wide, the cleaning dead angles are reduced, the spray heads of the second spray pipe group 15 are uniformly inclined at the same angle in the circumferential direction, the sprayed air flow forms annular air flow, and the cleaned accumulated ash is convenient to fall into the ash receiving tray 5 below in a concentrated mode, so that the diffusion is avoided.
The bottom of the driving rod 11 is rotatably connected with an ash receiving disc 5, an object placing disc 51 is arranged above the ash receiving disc 5, a deodorant is arranged in the object placing disc 51, and air holes 52 are formed in the surface of the object placing disc 51. The ash receiving tray 5 is arranged to receive the ash deposited from the first jet stack 14, the first vibration plate 25, the second vibration plate 26 and the brush plate 46, and the tray 51 is arranged to hold a deodorizing agent such as activated carbon, etc., to remove odor, and to prevent the ash deposited in the ash receiving tray 5 from escaping.
The working process comprises the following steps: when the boiler flue cleaning device is used, the driving wheels can be arranged to facilitate the movement of the bracket 1, the driving rod 11 extends into the flue to perform cleaning work, the driving rod 11 is driven by the first driving mechanism to rotate, so that the first jet pipe group 14, the second jet pipe group 15 and the mounting frame 2 connected with the driving rod 11 rotate along with the driving rod, and the rotatable steam impact, vibration cleaning and brushing plate 46 brush the inner wall of the boiler flue are formed, so that the cleaning is convenient and comprehensive, the cleaning of a wider dust cleaning area can be realized without frequent adjustment, the cleaning device is more practical, and the working efficiency is high;
the driving rod 11 is of a hollow structure, the steam generating device 13 is connected with the driving rod 11 through a steam pipe, the steam generating device 13 can adopt a device commonly used in the prior art, steam generated by the steam generating device 13 is sprayed to a heat exchange surface through the driving rod 11, the first jet pipe group 14 and the second jet pipe group 15, the steam sprayed by the first jet pipe group 14 firstly causes certain looseness and falling of accumulated dust on the heat exchange surface, then the second driving mechanism drives the rotating rod 21 to swing back and forth to drive the first beating hammer 22 and the second beating hammer 23 to respectively hammer the first vibrating plate 25 and the second vibrating plate 26 back and forth, the first vibrating plate 25 and the second vibrating plate 26 are contacted with the heat exchange surface again to cause the vibration of the heat exchange surface to drop dust, and in the vibration process, the dust adhering film 261 can be tightly attached to the heat exchange surface to remove the adhered dust, the cleaning brush 262 and the brush 46 can enter between the heat exchange surface to clean the heat exchange pipes deeply, the cleaning positions are enlarged, dead angles are reduced, and good dust cleaning effects are achieved; and the steam sprayed by the first jet pipe group 14 is matched, so that the dropping of deposited ash is quickened, and the ash removal effect is improved;
meanwhile, the electric push rod 31 drives the mounting frame 2 to move up and down, the vibration positions of the first vibration plate 25 and the second vibration plate 26 are adjusted, heating surfaces at different height positions are treated, the cleaning brush assembly 34 is utilized to brush the heat-exchanging surfaces up and down, the loosened dust deposit brush is treated, further, the cleaning brush assembly 34 can adjust the brushing deep position of the cleaning brush assembly 34 under the pushing of the pushing cylinder 33, and the stepping motor 43 is utilized to rotate the screw rods 45 at two sides through the structures of the worm wheel 42 and the worm 41, and as the screw threads at two ends of the screw rods 45 are opposite in direction, the rotation of the screw rods 45 enables the two sliding blocks 48 to be close to or far away from each other, and the brushing position is flexible;
finally, the second jet flow pipe group 15 sprays swirl steam to centralize ash cleaned on the heating surface into the ash receiving tray 5, so as to avoid secondary ash accumulation.
Claims (10)
1. A steam soot blowing system of a boiler flue, characterized in that: the device comprises a bracket (1) arranged outside a flue (6), wherein a hollow driving rod (11) extending into the flue (6) is arranged on the bracket (1), a first driving mechanism (12) for driving the driving rod (11) to rotate and a steam generating device (13) communicated with the driving rod (11) are connected to the upper part of the driving rod (11), and a first jet pipe group (14) and a second jet pipe group (15) which are communicated with the driving rod (11) and distributed up and down are arranged at the lower part of the driving rod (11); be located between first jet stack (14) and second jet stack (15) on actuating lever (11) and be equipped with mounting bracket (2), be equipped with dwang (21) on mounting bracket (2) and drive dwang (21) pivoted second actuating mechanism, the both sides of dwang (21) are equipped with first hammer (22) and second hammer (23) of beating respectively, the both sides of mounting bracket (2) are still connected with first vibrating plate (25) and second vibrating plate (26) respectively through damping spring (24), first hammer (22) and first vibrating plate (25) cooperation hammering, second hammer (23) and second vibrating plate (26) cooperation hammering.
2. A steam sootblowing system for a boiler stack according to claim 1, characterized in that: the driving rod (11) is fixedly connected with a fixing plate (3) above the first jet flow pipe group (14), an electric push rod (31) for driving the mounting frame (2) is arranged on the fixing plate (3), and the mounting frame (2) is connected with the driving rod (11) in an up-down sliding mode.
3. A steam sootblowing system for a boiler stack according to claim 2, characterized in that: the cleaning device is characterized in that U-shaped frames (32) are arranged on two sides of the bottom of the mounting frame (2), a pushing cylinder (33) facing the inner wall of the flue (6) is arranged on each U-shaped frame (32), and a cleaning brush assembly (34) is connected to each pushing cylinder (33).
4. A steam sootblowing system for a boiler stack according to claim 3, characterized in that: the cleaning brush assembly (34) comprises a mounting seat (4) connected with a piston rod of the pushing cylinder (33), a worm (41) and a worm wheel (42) which are meshed with each other are arranged in the mounting seat (4), the worm wheel (42) is driven by a stepping motor (43) and a synchronous belt (44), screw rods (45) with opposite screw threads are respectively arranged at two ends of the worm (41), brush plates (46) are connected to the screw rods (45) in a threaded mode, sliding grooves (47) are respectively arranged on two side walls of the U-shaped frame (32), sliding blocks (48) are connected to the sliding grooves (47) in a matched mode, and the end portions of the screw rods (45) are connected with the sliding blocks (48) in a rotating mode.
5. A steam sootblowing system for a boiler stack as recited in claim 4 wherein: the outer end face and the two side faces of the brush plate (46) are respectively provided with brush hairs (49).
6. A steam sootblowing system for a boiler stack according to claim 1, characterized in that: the first driving mechanism (12) and the second driving mechanism are driven by a driving motor, a belt and a belt pulley.
7. A steam sootblowing system for a boiler stack according to claim 1, characterized in that: the rotary rod (21) is provided with a plurality of fixed shaft sleeves (27), and the first striking hammer (22) and the second striking hammer (23) are arranged between the adjacent fixed shaft sleeves (27) through movable shaft sleeves (28).
8. A steam sootblowing system for a boiler stack according to claim 1, characterized in that: the dust-sticking films (261) and the cleaning brushes (262) are distributed on the outer side walls of the first vibrating plate (25) and the second vibrating plate (26) at intervals.
9. A steam sootblowing system for a boiler stack according to claim 1, characterized in that: the first jet pipe group (14) and the second jet pipe group (15) are distributed on the periphery of the driving rod (11) according to the circumferential direction, the spray pipes of the first jet pipe group (14) are distributed downwards in an inclined mode in the vertical direction, and the spray heads of the second jet pipe group (15) are uniformly inclined at the same angle in the circumferential direction.
10. A steam sootblowing system for a boiler stack according to claim 1, characterized in that: the bottom of the driving rod (11) is rotationally connected with an ash receiving disc (5), an object placing disc (51) is arranged above the ash receiving disc (5), a deodorant is arranged in the object placing disc (51), and ventilation holes (52) are formed in the surface of the object placing disc (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110836984.7A CN113701178B (en) | 2021-07-23 | 2021-07-23 | Steam soot blowing system of boiler flue |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110836984.7A CN113701178B (en) | 2021-07-23 | 2021-07-23 | Steam soot blowing system of boiler flue |
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| Publication Number | Publication Date |
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| CN113701178A CN113701178A (en) | 2021-11-26 |
| CN113701178B true CN113701178B (en) | 2024-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110836984.7A Active CN113701178B (en) | 2021-07-23 | 2021-07-23 | Steam soot blowing system of boiler flue |
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| CN115900071B (en) * | 2022-12-29 | 2024-06-11 | 西安热工研究院有限公司 | Large-capacity variable double-flue arranged boiler device |
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| CN113701178A (en) | 2021-11-26 |
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