CN210425883U

CN210425883U - Power plant boiler capable of utilizing flue gas to dry fuel

Info

Publication number: CN210425883U
Application number: CN201920479749.7U
Authority: CN
Inventors: 王永佳; 王学同; 张庆国; 王泽民
Original assignee: Huadian Electric Power Research Institute Co Ltd
Current assignee: Huadian Electric Power Research Institute Co Ltd
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2020-04-28
Anticipated expiration: 2029-04-10

Abstract

The utility model discloses an available flue gas carries out power boiler that fuel was dried, including boiler body and the pipe of discharging fume, the intercommunication has the pipe of discharging fume on the boiler body, and the one end flange sealing connection of pipe and flue gas recovery pipe of discharging fume, and inside the other end of flue gas recovery pipe extended to the buggy jar, be welding sealing connection between flue gas recovery pipe and the buggy jar, and the bottom of flue gas recovery pipe and the one end flange sealing connection of ripple expansion hose, and the other end and the fall way flange sealing connection of ripple expansion hose, the buggy jar bottom is linked together with the intake pipe through communicating pipe, and welded connection has the magnet ring on the inner wall of buggy jar, and the inside fixed welding in bottom of buggy jar has the screen cloth. This power boiler that fuel was dried is carried out to usable flue gas blows the buggy constantly for the buggy is continuous to flow and float, thereby can make the buggy be heated repeatedly, drying efficiency is high, and flue gas heat recovery is effectual, and the practicality is strong.

Description

Power plant boiler capable of utilizing flue gas to dry fuel

Technical Field

The utility model relates to a power boiler technical field specifically is a power boiler that usable flue gas carries out fuel drying.

Background

When the power plant boiler is burnt, the discharged waste contains a large amount of heat, so that the heat is discharged without being utilized, and energy waste is caused. In order to carry out heat energy recovery and utilization, the discharged waste gas is used for drying the fuel, the existing drying device cannot fully dry the fuel, the heat energy is not fully utilized, the practicability is not strong, the use requirements of people cannot be met, and in view of the defects existing in the prior art, the existing drying device needs to be further improved, so that the existing drying device has higher practicability and can meet the practical use condition.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an usable flue gas carries out power boiler that fuel was dried to solve that what above-mentioned background art provided can not be to the abundant drying of fuel, heat utilization is not abundant, the not strong problem of practicality.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an available flue gas carries out power boiler that fuel was dried, includes boiler body and the pipe of discharging fume, its characterized in that: the boiler body is communicated with a smoke exhaust pipe, the smoke exhaust pipe is in flange seal connection with one end of a smoke gas recovery pipe, the other end of the smoke gas recovery pipe extends into the coal powder tank, the smoke gas recovery pipe is in welded seal connection with the coal powder tank, the bottom end of the smoke gas recovery pipe is in flange seal connection with one end of a corrugated telescopic hose, and the other end of the corrugated telescopic hose is in flange seal connection with a lifting pipe; the bottom end of the pulverized coal tank is communicated with the air inlet pipe through a communicating pipe, the inner wall of the pulverized coal tank is connected with a magnet ring in a welding mode, and a screen is fixedly welded inside the bottom of the pulverized coal tank; the lifting pipe is connected with the lifting rod through a sealed movable joint and communicated with the lifting rod; the top end surface of the magnet ring is welded and connected with a rack, a wall body of the lifting rod is provided with a through hole, and the lifting rod is welded and connected with a gear meshed with the rack; the communicating pipe is hermetically welded with the boiler body and the air inlet pipe, and the air inlet pipe is welded with the boiler body and communicated with the boiler body.

Preferably, the number of the elevator pipes is 3, and the elevator pipe at the bottommost end is a hollow cylindrical structure with an open top end and a closed bottom end, and the rest 2 elevator pipes are hollow cylindrical structures with open two ends.

Preferably, the end of the lifting rod welded with the gear is made of a magnetic material, the end of the lifting rod is mutually exclusive with the magnet ring, and the lifting rod is of a hollow structure.

Preferably, the number of magnet rings and elevator pipe is the same, and magnet ring is the ring structure to the interval between 2 adjacent magnet rings and the lifter is unanimous.

Preferably, the length of the rack is consistent with the distance between the adjacent 2 magnet rings, and the rack is perpendicular to the magnet rings.

Preferably, be connected with 4 lifter on the fall way, and 4 lifter evenly distributed.

Compared with the prior art, the beneficial effects of the utility model are that: this power boiler that usable flue gas carries out fuel drying is provided with the buggy jar, before carrying out the drying to the buggy, let in the buggy jar, high temperature flue gas after the filtration can let in to the flue gas recovery intraductal, when the flue gas recovery intraductal flows, can drive the fall way and constantly go up and down, the fall way can drive the lifter limit and go up and down the limit rotatory, when going up and down, can constantly stir accumulational buggy, the flue gas can be followed the blowout in the lifter wall body simultaneously, like this when rotatory, can constantly blow the buggy, make the continuous flow of buggy and float, thereby can make the buggy be heated repeatedly, drying efficiency is high, flue gas heat recovery is effectual, therefore, the clothes hanger is strong in practicability.

Drawings

Fig. 1 is a schematic overall front structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic top view of a pulverized coal tank according to an embodiment of the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 2.

In the figure: 1. boiler body, 2, smoke exhaust pipe, 3, flue gas recovery pipe, 4, pulverized coal jar, 5, ripple expansion hose, 6, elevator pipe, 7, lifter, 8, sealed movable joint, 9, through-hole, 10, gear, 11, rack, 12, magnet ring, 13, communicating pipe, 14, intake pipe, 15, screen cloth.

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. 1-3, the present invention provides a technical solution: a power plant boiler capable of utilizing flue gas to dry fuel comprises a boiler body 1 and a flue gas exhaust pipe 2, the boiler body 1 is communicated with the flue gas exhaust pipe 2, the flue gas exhaust pipe 2 is in flange seal connection with one end of a flue gas recovery pipe 3, the other end of the flue gas recovery pipe 3 extends into a pulverized coal tank 4, the flue gas recovery pipe 3 is in welding seal connection with the pulverized coal tank 4, the bottom end of the flue gas recovery pipe 3 is in flange seal connection with one end of a corrugated telescopic hose 5, the other end of the corrugated telescopic hose 5 is in flange seal connection with a lifting pipe 6, the bottom end of the pulverized coal tank 4 is communicated with an air inlet pipe 14 through a communicating pipe 13, a magnet ring 12 is welded on the inner wall of the pulverized coal tank 4, and a screen 15 is fixedly welded inside the bottom of the pulverized coal tank 4; the lifting pipe 6 is connected with the lifting rod 7 through a sealing movable joint 8, and the lifting pipe 6 is communicated with the lifting rod 7; the top end surface of the magnet ring 12 is welded and connected with a rack 11, the wall body of the lifting rod 7 is provided with a through hole 9, and the lifting rod 7 is welded and connected with a gear 10 meshed with the rack 11; the communicating pipe 13 is welded with the boiler body 1 and the air inlet pipe 14 in a sealing way, and the air inlet pipe 14 is welded with the boiler body 1 and communicated with the boiler body.

The number of fall way 6 is 3, and the fall way 6 of bottommost is the top and is the opening form, the hollow cylindrical structure of bottom for the closed form, and all the other 2 fall ways 6 are the hollow cylindrical structure of both ends for the opening form, 3 fall way 6 and ripple expansion tube 5 make up into the top and are the opening form like this, the hollow cylindrical structure of bottom for the closed form, flue gas in flue gas recovery tube 3 flows in ripple expansion tube 5 and fall way 6 like this, because the flue gas can't be discharged, the fall way 6 of bottommost has been assaulted to high pressure flue gas, and drive its perpendicular downstream, and then fall way 6 is when removing, tensile ripple expansion tube 5, and lifter 7 can with 6 synchronous motion of fall way, and is rational in infrastructure.

Be connected with 4 lifter 7 on every

fall way

6, and 7 evenly distributed of 4 lifter, the welding of lifter 7 has the one end of gear 10 to be the magnetism material, and 7 this ends of lifter and magnet ring 12 repel each other, and lifter 7 is hollow structure, when 7 perpendicular downstream of lifter, the magnet ring 12 with its below draws close gradually, like this when both are close, the perpendicular upwards restoration of magnetic repulsion drive lifter 7, and then lifter 7 is kept away from with magnet ring 12 again, lifter 7 is under the drive of fall way 6, and under the magnetic repulsion, can be perpendicular reciprocating motion in the certain limit, and then can turn over the buggy, can carry out abundant drying to the buggy.

The length of the rack 11 is consistent with the distance between the upper and lower adjacent 2 magnet rings 12, and the rack 11 and the magnet rings 12 are perpendicular to each other, so that the gear 10 can keep a meshed state with the rack 11 all the time when moving along with the lifting rod 7, and the rack 11 is designed vertically, so that the lifting rod 7 also moves vertically.

Magnet rings 12 are consistent with 6 numbers of elevator tube, and magnet rings 12 are the ring form structure to the interval between 2 magnet rings 12 adjacent from top to bottom and lifter 7 is unanimous, and like this lifter 7 on elevator tube 6 when quiescent condition, can not produce magnetic action with magnet rings 12 of its top and below, has guaranteed that lifter 7 only can produce magnetic action with magnet rings 12 of its below when removing.

The working principle is as follows: when the coal dust drying device is used, coal dust to be dried is introduced into the coal dust tank 4, when the coal dust in the boiler body 1 is combusted, generated smoke is discharged from the smoke exhaust pipe 2, the smoke can be introduced into the smoke recovery pipe 3 after being filtered in the smoke exhaust pipe 2, the smoke flows at a high speed in the smoke recovery pipe 3 and impacts the lifting pipe 6 at the bottommost end to drive the lifting pipe 6 to vertically move downwards, so that the lifting rods 7 can synchronously move, when the lifting rods 7 move, the gears 10 on the lifting rods 7 are meshed with the racks 11, so that the lifting rods 7 rotate while vertically moving, the smoke simultaneously flows into the lifting rods 7 when impacting the lifting pipes 6 and is sprayed out from the through holes 9 on the lifting rods 7, and the coal dust can be blown up due to the fact that the lifting rods 7 can rotate to spray out gas, so that the coal dust cannot be accumulated together and can be uniformly contacted with heat, when the lifting rod 7 descends, and when the distance between the lifting rod 7 and the magnet ring 12 below the lifting rod is short, the lifting rod rebounds and rises under the action of magnetic repulsion, so that the pulverized coal can be dried fully, the pulverized coal falls into the communicating pipe 13 through the screen 15 after being dried, and the high-speed gas in the air inlet pipe 14 can wrap the dried pulverized coal and then is introduced into the boiler body 1 together.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents may be substituted for elements thereof without departing from the scope of the invention.

Claims

1. The utility model provides an available flue gas carries out power boiler that fuel was dried, includes boiler body (1) and tub (2) of discharging fume, its characterized in that: the boiler is characterized in that a smoke exhaust pipe (2) is communicated with the boiler body (1), the smoke exhaust pipe (2) is in flange sealing connection with one end of a smoke recovery pipe (3), the other end of the smoke recovery pipe (3) extends into the coal powder tank (4), the smoke recovery pipe (3) is in welding sealing connection with the coal powder tank (4), the bottom end of the smoke recovery pipe (3) is in flange sealing connection with one end of a corrugated telescopic hose (5), and the other end of the corrugated telescopic hose (5) is in flange sealing connection with a lifting pipe (6); the bottom end of the pulverized coal tank (4) is communicated with an air inlet pipe (14) through a communicating pipe (13), the inner wall of the pulverized coal tank (4) is connected with a magnet ring (12) in a welding mode, and a screen (15) is fixedly welded inside the bottom of the pulverized coal tank (4); the lifting pipe (6) is connected with the lifting rod (7) through a sealing movable joint (8), and the lifting pipe (6) is communicated with the lifting rod (7); the top end surface of the magnet ring (12) is welded and connected with a rack (11), the wall body of the lifting rod (7) is provided with a through hole (9), and the lifting rod (7) is welded and connected with a gear (10) meshed with the rack (11); the communicating pipe (13) is hermetically welded with the boiler body (1) and the air inlet pipe (14), and the air inlet pipe (14) is welded with the boiler body (1) and communicated with the boiler body.

2. A power plant boiler capable of utilizing flue gas for fuel drying according to claim 1, characterized in that: the number of fall way (6) is 3, and the fall way (6) of bottommost be the hollow cylindrical structure that the top is the opening form, the bottom is closed form to remaining 2 fall ways (6) are the hollow cylindrical structure that both ends are the opening form.

3. A power plant boiler capable of utilizing flue gas for fuel drying according to claim 1, characterized in that: the lifting rod (7) is welded with one end of the gear (10) and is made of magnetic materials, the end of the lifting rod (7) is mutually exclusive with the magnet ring (12), and the lifting rod (7) is of a hollow structure.

4. A power plant boiler capable of utilizing flue gas for fuel drying according to claim 1, characterized in that: the number of the magnet rings (12) is the same as that of the lifting pipes (6), the magnet rings (12) are of a circular ring structure, and the distance between every two adjacent magnet rings (12) and the lifting rod (7) is consistent.

5. The power plant boiler capable of utilizing flue gas for fuel drying according to claim 4, characterized in that: the length of the rack (11) is consistent with the distance between the adjacent 2 magnet rings (12), and the rack (11) is perpendicular to the magnet rings (12).

6. A power plant boiler capable of utilizing flue gas for fuel drying according to claim 1, characterized in that: the lifting pipe (6) is connected with 4 lifting rods (7), and the 4 lifting rods (7) are uniformly distributed.