CN219473697U

CN219473697U - Boiler ash removal mechanism of thermal power plant

Info

Publication number: CN219473697U
Application number: CN202320652953.0U
Authority: CN
Inventors: 孙彦华; 李振; 张志刚
Original assignee: Huaneng Weihai Power Generation Co Ltd
Current assignee: Huaneng Weihai Power Generation Co Ltd
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-08-04
Anticipated expiration: 2033-03-29

Abstract

The utility model discloses a boiler ash removal mechanism of a thermal power plant, which comprises a boiler body and a motor, wherein one side of the motor is provided with a shell, the interior of the shell is provided with an acoustic cavity, the acoustic cavity is internally provided with a transverse connecting shaft, the end part of the connecting shaft extends to the outer side of the shell and is connected with a motor shaft part, the end part of the connecting shaft, which is positioned in the acoustic cavity, is provided with a turntable, and one side of the shell, which is close to the turntable, is provided with a resonance tube.

Description

Boiler ash removal mechanism of thermal power plant

Technical Field

The utility model relates to the technical field of boiler ash removal, in particular to a boiler ash removal mechanism of a thermal power plant.

Background

The boiler of the thermal power plant is a medium-sized and large-sized boiler which provides specified quantity and quality steam for a steam turbine in the power plant, after long-term combustion, more coal ash and the like remain in the boiler, dust in the boiler can be adhered to the inner wall of the boiler due to longer ash cleaning period, and the dust can be condensed into a harder whole along with the accumulation of time, so that the use of the boiler is affected.

At present, most of heat-engine plant boilers perform soot blowing on a heating surface of the boiler in a steam soot blower mode; in each boiler overhaul, the tail heating surface steam soot blower is found to have abnormal serious blowing loss, the number of the tail heating surface tube replacement is increased year by year in a trend of increasing year by year, the service life of the tail heating surface and the safe operation of a unit are greatly influenced by the steam soot blower, and the production of enterprises is greatly influenced.

Disclosure of Invention

The utility model aims to provide a boiler ash removal mechanism of a thermal power plant, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a boiler deashing mechanism of thermal power plant, includes boiler body and motor, one side of motor is provided with the casing, the inside of casing is provided with the sound generation chamber, the sound generation intracavity is provided with horizontal connecting axle, the tip of connecting axle extends to the outside of casing and is connected with the motor shaft portion, the tip that the connecting axle is located the sound generation intracavity portion is provided with the carousel, one side that the casing is close to the carousel is provided with the resonance tube, the resonance tube extends to boiler body inner chamber, the bottom of casing is provided with the intake pipe, be provided with the mounting structure that is used for holding up fixed to motor and casing on the boiler body.

As a further scheme of the utility model: the middle part that resonance tube one side was kept away from to the casing is provided with the bulge, the tip of bulge is provided with the flange, the connecting axle runs through bulge and flange in proper order, just the connecting axle passes through the bearing and rotates with the bulge to be connected, just the junction of connecting axle and flange and the junction with shells inner wall are provided with the sealing washer.

As still further aspects of the utility model: the resonance tube is arranged at the eccentric position above the side wall of the shell, the side wall of the shell is provided with a sounding port communicated with the resonance tube, and the eccentric position of the surface of the turntable is provided with spouts which are distributed corresponding to the sounding port.

As still further aspects of the utility model: the spout and the sounding port are both of conical structures, and the diameter of the side, opposite to the sounding port, of the spout is small, and the diameter of the side, far away from each other, of the spout is large.

As still further aspects of the utility model: the bottom of the shell is provided with an air inlet communicated with the sound generating cavity and the air inlet pipe.

As still further aspects of the utility model: the installation structure comprises a lower fixing ring and an upper fixing ring which are fixedly connected with the boiler body, and a supporting plate which is in contact with the bottom of the motor and the bottom of the shell, wherein one end of the bottom of the supporting plate is fixedly connected with the lower fixing ring through a first clamping connector, and one end, far away from the first clamping connector, of the supporting plate is fixedly connected with the upper fixing ring through a reinforcing member.

As still further aspects of the utility model: the lower fixing ring is composed of two semicircular rings, the two semicircular rings are fixedly connected through screws, and the structure of the upper fixing ring is identical to that of the lower fixing ring.

As still further aspects of the utility model: the reinforcement includes the L template, the horizontal part of L template passes through the bottom fixed connection of screw and backup pad, the vertical portion of L template and the rear end contact of motor, just the vertical portion top lateral wall of L template is provided with the connecting plate, the tip of connecting plate is provided with the second joint, the bottom that the second joint is close to boiler body one side with first joint is provided with the bayonet socket, just the second joint passes through the outside of bayonet socket card upper fixed ring and lower fixed ring fixed head with first joint to through screw fixed connection.

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

1. the utility model uses the gas, electricity and sound to integrate, the electric energy of the motor converts the gas pressure energy in the sound generating cavity into the required acoustic energy, the acoustic energy is sent into the boiler through the resonance tube and used for removing ash in the boiler, the acoustic energy can be effectively transmitted to each part in the boiler without dead angle as energy, when the acoustic pressure is larger than the bonding strength of the fly ash deposition layer, the adhesion force of the damaged fly ash can be removed, the radiation heating surface can be effectively cleaned in time by the acoustic wave, the slag bonding prevention effect can be realized, the coke slag growth inhibition effect can be realized, the fatigue damage effect on the cooled slag layer can be realized, and the safe, efficient and energy-saving operation of the boiler can be facilitated.

2. Through the setting of mounting structure, can carry out effectual spacing fixedly to motor and casing, avoid motor and casing because of the circumstances that vibrations take place the position offset when using, improved the stability of structure greatly, and easy operation is convenient.

Drawings

Fig. 1 is a schematic structural view of a boiler ash removal mechanism of a thermal power plant.

Fig. 2 is a schematic structural view of a mounting structure in a boiler ash cleaning mechanism of a thermal power plant.

Fig. 3 is a schematic structural view of the inside of a housing in a boiler ash removal mechanism of a thermal power plant.

In the figure: 1. a boiler body; 2. a lower fixing ring; 3. an upper fixing ring; 4. a support plate; 5. a motor; 6. a housing; 7. a reinforcement; 8. a first clamping joint; 9. a semicircular ring; 10. a connecting plate; 11. an L-shaped plate; 12. a second clamping joint; 13. a resonance tube; 14. an air inlet pipe; 15. an acoustic cavity; 16. a nose; 17. a convex plate; 18. a connecting shaft; 19. a seal ring; 20. a turntable; 21. a spout; 22. and a sound producing port.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, in the embodiment of the utility model, a boiler ash cleaning mechanism of a thermal power plant comprises a boiler body 1 and a motor 5, wherein a shell 6 is arranged at one side of the motor 5, a sounding cavity 15 is arranged in the shell 6, a transverse connecting shaft 18 is arranged in the sounding cavity 15, the end part of the connecting shaft 18 extends to the outer side of the shell 6 and is connected with a shaft part of the motor 5, a raised head 16 is arranged at the middle part of one side of the shell 6 far away from a resonance tube 13, a raised plate 17 is arranged at the end part of the raised head 16, the connecting shaft 18 sequentially penetrates through the raised head 16 and the raised plate 17, the connecting shaft 18 is rotationally connected with the raised head 16 through a bearing, a sealing ring 19 is arranged at the joint of the connecting shaft 18 and the raised plate 17 and the joint of the connecting shaft and the inner wall of the shell 6, the sealing ring 19 is arranged, the sealing performance of the joint of the connecting shaft 18 and the shell 6 is increased, and the phenomenon of gas loss in the sounding cavity 15 can be effectively prevented, the end of the connecting shaft 18 positioned in the sound generating cavity 15 is provided with a rotary table 20, one side of the shell 6 close to the rotary table 20 is provided with a resonance tube 13, the resonance tube 13 extends to the inner cavity of the boiler body 1, the bottom of the shell 6 is provided with an air inlet pipe 14, the resonance tube 13 is arranged at the eccentric position above the side wall of the shell 6, the side wall of the shell 6 is provided with a sound generating opening 22 communicated with the resonance tube 13, the eccentric position on the surface of the rotary table 20 is provided with spray nozzles 21 distributed corresponding to the sound generating opening 22, the spray nozzles 21 and the sound generating opening 22 are of conical structures, the diameter of the side, opposite to the sound generating opening 22, of the spray nozzles 21 is small, the diameter of the side, far away from each other, is large, the bottom of the shell 6 is provided with an air inlet communicated with the sound generating cavity 15 and the air inlet pipe 14, because the sound generating opening 22 and the spray nozzles 21 are positioned at the eccentric position of the rotary table 20, and because the spray nozzles 21 are positioned on the rotary table 20, the sound generating opening 22 is positioned on the shell 6, the method is characterized in that when the rotary table 20 rotates along with the connecting shaft 18, the nozzle 21 rotates along with the rotary table 20, the sounding opening 22 is in a static state, when the nozzle 21 corresponds to the sounding opening 22, gas in the sounding cavity 15 is released, throttling air mass injection noise is generated, meanwhile, air mass with pressure flows out of the sounding opening 22, as the rotary table 20 rotates, the nozzle 21 and the sounding opening 22 on the rotary table 20 are gradually closed, the air outflow is gradually reduced, when the rotary table 20 rotates to 180 degrees, the nozzle 21 and the sounding opening 22 are 180 degrees different, the pressure air mass is sealed in the sounding cavity 15, no air flow flows out at the sounding opening 22, namely, the motor 5 rotates once every round to form a monopole sound source, the monopole sound source is sent into a boiler through the resonance tube 13, ash in the boiler is removed, when the rotary table 20 rotates, the nozzle 21 and the sounding opening 22 are gradually closed, the air outflow is gradually reduced, the air mass is gradually reduced, and the air flow is gradually changed from a full open cycle to a maximum value, and the maximum value is increased to a maximum value, and the maximum value is zero, and the air flow is changed in a cycle is zero.

The boiler body 1 is provided with a mounting structure for supporting and fixing the motor 5 and the shell 6, the mounting structure comprises a lower fixing ring 2 and an upper fixing ring 3 which are fixedly connected with the boiler body 1, and a supporting plate 4 which is contacted with the bottoms of the motor 5 and the shell 6, the supporting plate 4 is provided with a through hole for inserting an air inlet pipe 14, one end of the bottom of the supporting plate 4 is fixedly connected with the lower fixing ring 2 through a first clamping joint 8, one end of the supporting plate 4 far away from the first clamping joint 8 is fixedly connected with the upper fixing ring 3 through a reinforcing member 7, the lower fixing ring 2 is composed of two semicircular rings 9, the two semicircular rings 9 are fixedly connected through screws, the structure of the upper fixing ring 3 is identical with that of the lower fixing ring 2, the reinforcing member 7 comprises an L-shaped plate 11, the horizontal part of the L-shaped plate 11 is fixedly connected with the bottom of the supporting plate 4 through screws, the vertical part of the L-shaped plate 11 is contacted with the rear end of the motor 5, the side wall of the top end of the vertical part of the L-shaped plate 11 is provided with a connecting plate 10, the end part of the connecting plate 10 is provided with a second clamping connector 12, the bottom of the second clamping connector 12 and the bottom of the first clamping connector 8 are provided with bayonets close to one side of the boiler body 1, the second clamping connector 12 and the first clamping connector 8 are clamped at the outer sides of the fixing heads of the upper fixing ring 3 and the lower fixing ring 2 through bayonets and fixedly connected through screws, when the boiler is installed, the upper fixing ring and the lower fixing ring are installed on the boiler body 1, the first clamping connector 8 on the supporting plate 4 is fixedly connected with the lower fixing ring 2, then the motor 5, the shell 6 and the supporting plate 4 are installed and fixed, the L-shaped plate 11 is contacted with the supporting plate 4, the second clamping connector 12 is fixedly connected with the upper fixing ring 3, thereby realizing the effective fixing of the supporting plate 4, avoiding the situation that the motor 5 and the shell 6 are shifted in position due to vibration when in use, the stability of the structure is greatly improved, and the operation is simple and convenient.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a boiler ash removal mechanism of thermal power plant, includes boiler body (1) and motor (5), a serial communication port, one side of motor (5) is provided with casing (6), the inside of casing (6) is provided with sound generation chamber (15), be provided with horizontal connecting axle (18) in sound generation chamber (15), the tip of connecting axle (18) extends to the outside of casing (6) and is connected with motor (5) shaft portion, the tip that connecting axle (18) are located sound generation chamber (15) inside is provided with carousel (20), one side that casing (6) is close to carousel (20) is provided with resonance tube (13), resonance tube (13) extend to boiler body (1) inner chamber, the bottom of casing (6) is provided with intake pipe (14), be provided with on boiler body (1) and be used for carrying out the fixed mounting structure of holding up motor (5) and casing (6).

2. The ash removal mechanism of a boiler in a thermal power plant according to claim 1, characterized in that a raised head (16) is arranged at the middle part of one side of the shell (6) far away from the resonance tube (13), a raised plate (17) is arranged at the end part of the raised head (16), the connecting shaft (18) sequentially penetrates through the raised head (16) and the raised plate (17), the connecting shaft (18) is rotationally connected with the raised head (16) through a bearing, and a sealing ring (19) is arranged at the connecting part of the connecting shaft (18) and the raised plate (17) and the connecting part of the connecting shaft and the inner wall of the shell (6).

3. The ash removal mechanism of a boiler in a thermal power plant according to claim 1, wherein the resonance tube (13) is arranged at an eccentric position above the side wall of the shell (6), a sounding opening (22) communicated with the resonance tube (13) is arranged on the side wall of the shell (6), and nozzles (21) distributed corresponding to the sounding opening (22) are arranged at the surface eccentric position of the turntable (20).

4. A boiler ash removal mechanism for a thermal power plant according to claim 3, characterized in that the nozzle (21) and the sound outlet (22) are both in conical structures, and the nozzle (21) and the sound outlet (22) are small in diameter on the opposite side and large in diameter on the opposite side.

5. The ash removal mechanism of a boiler of a thermal power plant according to claim 1, wherein the bottom of the housing (6) is provided with an air inlet communicated with the sound generating cavity (15) and the air inlet pipe (14).

6. The ash removal mechanism of a boiler of a thermal power plant according to claim 1, wherein the installation structure comprises a lower fixing ring (2) and an upper fixing ring (3) which are fixedly connected with the boiler body (1), and a supporting plate (4) which is contacted with the bottoms of the motor (5) and the shell (6), one end of the bottom of the supporting plate (4) is fixedly connected with the lower fixing ring (2) through a first clamping connector (8), and one end, far away from the first clamping connector (8), of the supporting plate (4) is fixedly connected with the upper fixing ring (3) through a reinforcing member (7).

7. The ash removal mechanism of a boiler in a thermal power plant according to claim 6, wherein the lower fixing ring (2) is composed of two semicircular rings (9), the two semicircular rings (9) are fixedly connected through bolts, and the structure of the upper fixing ring (3) is identical to that of the lower fixing ring (2).

8. The ash removal mechanism of a boiler in a thermal power plant according to claim 6, wherein the reinforcement (7) comprises an L-shaped plate (11), the horizontal part of the L-shaped plate (11) is fixedly connected with the bottom of the supporting plate (4) through a screw, the vertical part of the L-shaped plate (11) is in contact with the rear end of the motor (5), a connecting plate (10) is arranged on the side wall of the top of the vertical part of the L-shaped plate (11), a second clamping connector (12) is arranged at the end of the connecting plate (10), a bayonet is arranged at the bottom of the second clamping connector (12) and the first clamping connector (8) close to one side of the boiler body (1), and the second clamping connector (12) and the first clamping connector (8) are clamped on the outer sides of the upper fixing ring (3) and the lower fixing ring (2) through the bayonet and are fixedly connected through the screw.