CN211011339U

CN211011339U - Pressurized internal circulation fluidized bed boiler

Info

Publication number: CN211011339U
Application number: CN201922167099.5U
Authority: CN
Inventors: 王克东; 聂立辉; 李宝
Original assignee: Datang Yuncheng Power Generation Co Ltd
Current assignee: Datang Yuncheng Power Generation Co Ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-07-14
Anticipated expiration: 2029-12-06

Abstract

The utility model discloses a pressurized internal circulation fluidized bed boiler, which comprises a boiler, a smoke exhaust pipe and a gear, wherein one side of the boiler is fixedly connected with a feeding pipe through a bolt; the utility model discloses a through being equipped with the connecting plate, blast pipe and dust removal filter core, and the flue gas enters into the pipe of discharging fume in the boiler through the blast pipe, and atmospheric pressure blows the connecting plate rebound, can plug up the pipe of discharging fume, the flue gas rebound is after the dust removal of dust removal filter core, the dust falls into the dust collection box, can take out the clearance at any time, and the fan takes out clean flue gas to the boiler from the pipe upper portion of discharging fume, fuel burning in the boiler provides oxygen, and the flue gas temperature of the pipe upper portion of discharging fume is very high, not only can get rid of dust and toxic gas in the flue gas, avoid the flue gas to cause the pollution to the environment, ensure human health, and can bring the heat in the flue gas back to the boiler, the energy has been saved, avoid causing the waste of the energy.

Description

Pressurized internal circulation fluidized bed boiler

Technical Field

The utility model relates to the technical field of boilers, in particular to a pressurized internal circulation fluidized bed boiler.

Background

The circulating fluidized bed boiler is the clean coal combustion technology with the highest industrialization degree, the circulating fluidized bed boiler adopts fluidized combustion, the main structure comprises a combustion chamber and a circulating return furnace, the biggest difference with the bubbling fluidized bed combustion technology is that the running wind speed is high, the heterogeneous reaction processes such as combustion, desulfurization and the like are enhanced, the boiler capacity can be expanded to the large capacity acceptable by the power industry, at present, the circulating fluidized bed boiler well solves the basic problems such as thermology, mechanics, materials and the like and the engineering problems such as expansion, abrasion, over temperature and the like, and becomes the advanced technology of the utilization of the difficult-to-burn solid fuel energy, but the current fluidized bed boiler has some defects, such as:

the flue gas that fluidized bed boiler discharged among the prior art directly discharges in the air through simple filtration, and the flue gas after the coal burning not only contains a large amount of dust particles, and toxic gas in addition not only causes certain environmental pollution, brings certain harm to human health, and the flue gas moderate temperature after burning is very high moreover, if direct evacuation, causes the waste of the energy.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pressurization inner loop fluidized bed boiler to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a pressurized internal circulation fluidized bed boiler comprises a boiler, a smoke exhaust pipe and a gear, wherein a feeding pipe is fixedly connected to one side of the boiler through a bolt, support plates are fixedly connected to the two sides of the inner wall of the boiler through bolts, a plurality of first through holes are formed in the upper surface of each support plate, a slag discharge port is fixedly connected to the bottom end of one side of the boiler through a bolt, an exhaust pipe is fixedly connected to the position, close to the top end, of the other side of the boiler, the other end of the exhaust pipe is fixedly connected with the smoke exhaust pipe through a bolt, the exhaust pipe is communicated with the boiler and the smoke exhaust pipe, a connecting plate is rotatably connected to the position, close to the exhaust pipe, of one side of the inner wall of the smoke exhaust pipe through a pin shaft and a nut, a dust removal filter element is fixedly connected to the two sides, the utility model discloses a boiler, including motor case, motor case inner wall, shaft coupling fixedly connected with bull stick, bull stick one end is passed the pipe of discharging fume passes through bolt fixedly connected with gear, just the bull stick with the pipe of discharging fume passes through the bearing and rotates the connection, the pipe inner wall upper surface of discharging fume is close to one end department welding and has the spring, the welding of the spring other end has the rack, just the rack with gear engagement, the pipe opposite side of discharging fume is close to top department and passes through bolt fixedly connected with brace table, bolt fixedly connected with fan is passed through to the brace table upper surface, the fan input runs through the pipe of discharging fume, the fan other end passes through flange and bolt sealing connection has the gas-supply pipe, the other end of gas-supply pipe runs through the boiler, the gas vent has.

Preferably, the lower surface of the inner wall of the smoke exhaust pipe is spliced with a dust collecting box, the upper surface of the dust collecting box is provided with a groove, one side of the dust collecting box is welded with a handle, and the dust collecting box is connected with the smoke exhaust pipe in a sliding mode.

Preferably, the boiler and the smoke exhaust pipe are fixedly connected with the ground through bolts, an opening is formed in one side of the motor box, and an access door is hinged to one side of the opening.

Preferably, the positions, close to the bottom end, of two sides of the inner wall of the smoke exhaust pipe are fixedly connected with limiting plates through bolts, the limiting plates are connected with the racks in an inserting mode, and the racks are connected with the limiting plates in a sliding mode.

Preferably, one fourth of the circumference of the gear is meshed with the rack, the length of the rack is 10-20CM, and the dust removal filter element is of a U-shaped structure.

Preferably, a cap is welded at the top end of the smoke exhaust pipe, the cap is of a triangular cone structure, and the diameter of the first through hole is 0.5-1 CM.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model is provided with the connecting plate, the exhaust pipe and the dust removal filter element, smoke in the boiler enters the exhaust pipe through the exhaust pipe, the air pressure blows the connecting plate to move upwards, the exhaust pipe can be blocked, the smoke moves downwards and is removed dust through the dust removal filter element, dust falls into the dust collection box and can be extracted and cleaned at any time, the motor drives the rotating rod and the gear to rotate, when the rack is meshed with the gear, the gear can drive the rack to move downwards and push the connecting plate open, clean smoke moves upwards and is discharged, when the gear is not meshed with the rack, the rack moves upwards under the action of the spring tension, the connecting plate continues to block the exhaust pipe, and the fan pumps the clean smoke into the boiler from the upper part of the exhaust pipe, oxygen is provided for fuel combustion in the boiler, and the smoke temperature of the upper part of the exhaust pipe is very high, can the energy can be saved, when the flue gas of tub upper portion of discharging fume is not enough to provide oxygen for the boiler, the outside extraction air can be followed to the fan, and the air is through tub upper portion of discharging fume, also can be through preliminary preheating, can bring back to the boiler with exhaust partly heat in the boiler, not only can get rid of dust and toxic gas in the flue gas, avoid the flue gas to cause the pollution to the environment, ensure human health, and can bring back to the boiler with the heat in the flue gas, the energy has been saved, avoid causing the waste of the energy.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

FIG. 2 is a schematic view of the top cross-sectional structure of the dust collecting box of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 1;

fig. 4 is an enlarged schematic view of a portion B in fig. 1.

In the figure: 1-a boiler; 2-a feeding pipe; 3-a support plate; 4-a first via; 5-a slag discharge port; 6-an exhaust pipe; 7-a cap; 8-connecting plates; 9-smoke exhaust pipe; 10-a dust removal filter element; 11-a second via; 12-dust collection box; 13-a handle; 14-a groove; 15-a spring; 16-gas transmission pipe; 17-a support table; 18-a fan; 19-a limiting plate; 20-a rack; 21-a motor box; 22-a motor; 23-a gear; 24-rotating rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a pressurized internal circulation fluidized bed boiler comprises a boiler 1, a smoke exhaust pipe 9 and a gear 23, wherein one side of the boiler 1 is fixedly connected with a feeding pipe 2 through a bolt, coal is conveyed to a supporting plate 3 in the boiler 1 from the feeding pipe 2 to be combusted, two sides of the inner wall of the boiler 1 are fixedly connected with the supporting plate 3 through bolts, the upper surface of the supporting plate 3 is provided with a plurality of first through holes 4, ash slag generated after the coal is combusted leaks to the lower part of the boiler 1 from the first through holes 4 and is discharged through a slag discharge port 5, the bottom end of one side of the boiler 1 is fixedly connected with a slag discharge port 5 through a bolt, the other side of the boiler 1 close to the top end is fixedly connected with an exhaust pipe 6 through a bolt, the other end of the exhaust pipe 6 is fixedly connected with the smoke exhaust pipe 9 through a bolt, the exhaust pipe 6 is communicated with the boiler 1 and the smoke exhaust pipe 9, one side of the, the dust removal filter core 10 is fixedly connected to two sides of the inner wall of the smoke exhaust pipe 9 through bolts, the dust removal filter core 10 is specifically a dust removal filter core with the model of ODX-20, a second through hole 11 is formed in the lower surface of the inner wall of the dust removal filter core 10, smoke generated by combustion in the boiler 1 enters the smoke exhaust pipe 9 through the exhaust pipe 6, the air pressure blows the connecting plate 8 to move upwards and block the smoke exhaust pipe 9, the smoke moves downwards and is dedusted by the dust removal filter core 10, dust falls into the dust collecting box 12, the other side of the smoke exhaust pipe 9 close to the top end is fixedly connected with a motor box 21 through bolts, the upper surface of the inner wall of the motor box 21 is fixedly connected with a motor 22 through bolts, the motor 22 is specifically a motor with the model of YE2-802, the power output end of the motor 22 is fixedly connected with a rotating rod 24 through a coupler, one end of the, the rotating rod 24 is rotatably connected with the smoke exhaust pipe 9 through a bearing, a spring 15 is welded on the position, close to one end, of the upper surface of the inner wall of the smoke exhaust pipe 9, a rack 20 is welded on the other end of the spring 15, the rack 20 is meshed with the gear 23, the motor 22 drives the rotating rod 24 to rotate, so that the gear 23 is driven to rotate, the gear 23 drives the rack 20 to move downwards, the connecting plate 8 is pushed downwards to open, clean smoke is exhausted through an exhaust port in the top end of the smoke exhaust pipe 9, a support table 17 is fixedly connected to the position, close to the top end, of the other side of the smoke exhaust pipe 9 through a bolt, a fan 18 is fixedly connected to the upper surface of the support table 17 through a bolt, the fan 18 is specifically 4-72 in type, the input end of the fan 18 penetrates through the smoke exhaust pipe 9, the other end of the fan 18 is hermetically connected with, the method is characterized in that a fan 18 pumps clean flue gas into the boiler 1 from the upper part of a smoke exhaust pipe 9 to provide oxygen for fuel combustion in the boiler 1, the temperature of the flue gas at the upper part of the smoke exhaust pipe 9 is very high, energy can be saved, when the flue gas at the upper part of the smoke exhaust pipe 9 is not enough to provide oxygen for the boiler, the fan 18 can pump air from the outside, and the air can be preheated preliminarily to bring part of heat exhausted from the boiler back into the boiler 1 when passing through the upper part of the smoke exhaust pipe 9, an exhaust port is formed in the top end of one side of the smoke exhaust pipe 9, a dust collecting box 12 is inserted into the lower surface of the inner wall of the smoke exhaust pipe 9, a groove 14 is formed in the upper surface of the dust collecting box 12, a handle 13 is welded to one side of the dust collecting box 12, the dust collecting box 12 is connected with the smoke exhaust pipe 9 in, boiler 1 and exhaust pipe 9 all pass through bolt and ground fixed connection, the opening has been seted up to motor case 21 one side, and opening one side articulates there is the access door for overhauing motor 22, exhaust pipe 9 inner wall both sides are close to bottom department through bolt fixedly connected with limiting plate 19, just limiting plate 19 with rack 20 pegs graft, just rack 20 with limiting plate 19 sliding connection plays spacing effect to rack 20, prevents that rack 20 from taking place the skew in the removal process, the fourth of gear 23 girth with rack 20 meshes, rack 20 length size is 10-20CM, dust removal filter core 10 is U type structure, and when rack 20 and gear 23 mesh, gear 23 can drive rack 20 downstream, and when gear 23 and rack 20 do not mesh, rack 20 is under the effect of spring 15 pulling force, upward movement, exhaust pipe 9 welding has top block 7, the rain-proof function is achieved, the cap 7 is of a triangular cone structure, and the diameter of the first through hole 4 is 0.5-1 CM.

The working principle is as follows: when the coal dust collector is used, coal is conveyed to the supporting plate 3 through the feeding pipe 2 to be combusted, combusted ash and slag are discharged through the slag discharge port 5, smoke generated by combustion enters the smoke discharge pipe 9 through the exhaust pipe 6, the fan 18 extracts clean and qualified smoke on the upper portion of the smoke discharge pipe 9 and outside air and conveys the smoke and the outside air into the boiler 1 through the air conveying pipe 16 to provide oxygen required for fuel combustion, when the smoke enters the smoke discharge pipe 9, air pressure blows the connecting plate 8 to move upwards to block the smoke discharge pipe 9, after the smoke moves downwards and is dedusted by the dedusting filter element 10, dust falls into the dust collecting box 12 through the second through hole 11, the dust collecting box 12 can be extracted and cleaned at any time, the motor 22 is electrically connected with an external power supply, the motor 22 drives the rotating rod 24 and the gear 23 to rotate, when the rack 20 is meshed with the gear 23, the gear 23 can drive the rack 20 to move downwards, the connecting plate 8 is pushed open, clean flue gas moves upwards and is discharged, when the gear 23 is not meshed with the rack 20, the rack 20 moves upwards under the action of the tension force of the spring 15, the connecting plate 8 continuously plugs the exhaust pipe 9, the fan 18 pumps the clean flue gas into the boiler 1 from the upper part of the exhaust pipe 9 to provide oxygen for fuel combustion in the boiler 1, the temperature of the flue gas at the upper part of the exhaust pipe 9 is very high, energy can be saved, when the flue gas at the upper part of the exhaust pipe 9 is insufficient to provide oxygen for the boiler 1, the fan 18 can pump air from the outside, and the air can be preliminarily preheated when passing through the upper part of the exhaust pipe 9, so that part of heat discharged from the boiler 1 can be brought back to the boiler 1, dust and toxic gas in the flue gas can be removed, the pollution of the flue gas to the environment is avoided, and the health of a human body is ensured, and can bring the heat in the flue gas back to the boiler 1, save the energy, avoid causing the waste of the energy.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A pressurized internal circulating fluidized bed boiler, comprising a boiler (1), a smoke exhaust pipe (9) and a gear (23), characterized in that: the boiler is characterized in that a feeding pipe (2) is fixedly connected to one side of a boiler (1) through bolts, supporting plates (3) are fixedly connected to the two sides of the inner wall of the boiler (1) through bolts, a plurality of first through holes (4) are formed in the upper surface of each supporting plate (3), a slag discharge port (5) is fixedly connected to the bottom end of one side of the boiler (1) through bolts, an exhaust pipe (6) is fixedly connected to the position, close to the top end, of the other side of the boiler (1), the other end of the exhaust pipe (6) is fixedly connected to the exhaust pipe (9) through bolts, the exhaust pipe (6) is communicated with the boiler (1) and the exhaust pipe (9), a connecting plate (8) is rotatably connected to the position, close to the exhaust pipe (6), of one side of the inner wall of the exhaust pipe (9) through a pin, the dust removal filter element (10) is characterized in that a second through hole (11) is formed in the lower surface of the inner wall of the dust removal filter element (10), the other side of the smoke exhaust pipe (9) is close to the top end and is fixedly connected with a motor box (21) through a bolt, the upper surface of the inner wall of the motor box (21) is fixedly connected with a motor (22) through a bolt, the power output end of the motor (22) is fixedly connected with a rotating rod (24) through a coupler, one end of the rotating rod (24) penetrates through the smoke exhaust pipe (9) and is fixedly connected with a gear (23) through a bolt, the rotating rod (24) is rotatably connected with the smoke exhaust pipe (9) through a bearing, a spring (15) is welded at the position, close to one end, of the upper surface of the inner wall of the smoke exhaust pipe (9), a rack (20) is welded at the other end of the, the utility model discloses a boiler, including supporting bench (17), fan (18) input run through pipe (9) of discharging fume, the fan (18) other end has gas-supply pipe (16) through flange and bolt sealing connection, the other end of gas-supply pipe (16) runs through boiler (1), the gas vent has been seted up on pipe (9) one side top of discharging fume.

2. A pressurized internally circulating fluidized bed boiler according to claim 1, characterized in that: the dust collection box is characterized in that a dust collection box (12) is inserted into the lower surface of the inner wall of the smoke exhaust pipe (9), a groove (14) is formed in the upper surface of the dust collection box (12), a handle (13) is welded on one side of the dust collection box (12), and the dust collection box (12) is connected with the smoke exhaust pipe (9) in a sliding mode.

3. A pressurized internally circulating fluidized bed boiler according to claim 1, characterized in that: boiler (1) and tub (9) of discharging fume all pass through bolt and ground fixed connection, the opening has been seted up to motor case (21) one side, and opening one side articulates there is the access door.

4. A pressurized internally circulating fluidized bed boiler according to claim 1, characterized in that: the two sides of the inner wall of the smoke exhaust pipe (9) close to the bottom end are fixedly connected with limiting plates (19) through bolts, the limiting plates (19) are connected with the racks (20) in an inserting mode, and the racks (20) are connected with the limiting plates (19) in a sliding mode.

5. A pressurized internally circulating fluidized bed boiler according to claim 1, characterized in that: one quarter of the circumference of the gear (23) is meshed with the rack (20), the length of the rack (20) is 10-20CM, and the dust removal filter element (10) is in a U-shaped structure.

6. A pressurized internally circulating fluidized bed boiler according to claim 1, characterized in that: the top end of the smoke exhaust pipe (9) is welded with a cap (7), the cap (7) is of a triangular cone structure, and the diameter of the first through hole (4) is 0.5-1 CM.