CN219264278U

CN219264278U - Anti-coking device for circulating fluidized bed boiler

Info

Publication number: CN219264278U
Application number: CN202223517772.1U
Authority: CN
Inventors: 周新明; 许杰; 温超; 张伟林
Original assignee: Inner Mongolia North Mengxi Power Generation Co ltd
Current assignee: Inner Mongolia North Mengxi Power Generation Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-06-27
Anticipated expiration: 2032-12-28

Abstract

The utility model discloses an anti-coking device for a circulating fluidized bed boiler, which comprises a heat exchanger, wherein a slag notch is formed in the bottom of the heat exchanger, two baffle plates are slidably arranged at the bottom of the heat exchanger, the baffle plates are matched with the slag notch, a sliding structure is arranged on one side of the heat exchanger, a pushing structure is arranged on the sliding structure, and a linkage structure is arranged on the pushing structure.

Description

Anti-coking device for circulating fluidized bed boiler

Technical Field

The utility model relates to the technical field of boiler coking prevention, in particular to an anti-coking device for a circulating fluidized bed boiler.

Background

The utility model provides a circulating fluidized bed boiler has adopted high-efficient, energy-conserving, low pollution's outer circulating fluidized bed boiler coal-fired new technology, it has the wide adaptability of fuel, combustion efficiency is high, high-efficient desulfurization, NOX emission is low, simple structure, a great deal of advantages such as convenient operation, it has adopted the clean coal combustion technology that degree of industrialization is highest, in circulating fluidized bed boiler use, if bed temperature is too high or there is high temperature open flame locally, can form the coking when exceeding the material ash fusion point, perhaps when the limestone feed volume is very high or the inherent ash fusion point of fire coal is lower, produce low ash fusion point coking easily, coking is too much can influence the use of boiler, in the prior art, the patent of bulletin number CN217785127U discloses a circulating fluidized bed boiler anti-coking device, be equipped with spiral heat exchange tube in the heat exchanger, can clear up spiral heat exchange tube's outside lime-ash through clean up, drive mechanism drives clean up mechanism, can guarantee in spiral heat exchange tube work in-process constantly scrape sediment treatment, prevent the lime-ash adhesion that the temperature reduces from influencing heat exchange efficiency in spiral heat exchange tube's the outside, but some problems take place in the use:

when the cleaning mechanism scrapes the slag to the spiral heat exchange tube, the scraped slag can directly fall on the inner wall of the bottom of the heat exchanger, and because the heat exchanger is of a closed structure, the slag is difficult to clean out from the heat exchanger, and the slag can be piled up at the bottom of the heat exchanger over time, so that the use of the heat exchanger is affected.

Disclosure of Invention

The utility model aims to provide an anti-coking device for a circulating fluidized bed boiler, 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 an anti-coking device for circulating fluidized bed boiler, includes the heat exchanger, slag notch has been seted up to the bottom of heat exchanger, and two baffle baffles of slidable mounting in the bottom of heat exchanger, baffle and slag notch looks adaptation, and sliding construction is installed to one side of heat exchanger, installs the promotion structure on the sliding construction, installs the linkage structure on the promotion structure;

the pushing structure comprises a fixed plate, two connecting rods are rotatably arranged on the fixed plate, a movable shaft is movably arranged on the connecting rods, a sliding rod is arranged on the movable shaft, the sliding rod is slidably arranged on the heat exchanger, a push plate is arranged on the sliding rod, a telescopic plate is slidably arranged on the push plate and is in contact with the inner wall of the heat exchanger, a limit bar is arranged on the push plate, and the limit bar is slidably arranged on the inner wall of the heat exchanger.

Preferably, the linkage structure comprises a fixed block, the fixed block is arranged on the push plate, two rotating rods are rotatably arranged on the fixed block, a connecting block is rotatably arranged on the rotating rods, and the connecting block is arranged on the baffle plate.

Preferably, the sliding structure comprises a retention block, the retention block is arranged on the heat exchanger, a retention chute is formed in the retention block, a sliding block is arranged in the retention chute in a sliding mode, the sliding block is arranged on the fixing plate, a limit column is arranged on the sliding block in a sliding mode, and the limit column is arranged on the inner wall of the retention chute.

Preferably, the sliding hole is formed in the sliding block, the limiting column is slidably mounted in the sliding hole, the limiting column is sleeved with the limiting spring, one end of the limiting spring is mounted on the inner wall of the retention chute, and the other end of the limiting spring is mounted on the sliding block.

Preferably, the fixed block is provided with two rotating shafts, the connecting block is provided with a fixed shaft, the rotating rod is provided with two rotating holes, and the rotating shafts and the fixed shaft are respectively and rotatably arranged in the two rotating holes.

Preferably, the connecting rod is provided with a movable hole, the movable shaft is movably arranged in the movable hole, one side of the heat exchanger is provided with a limiting hole, the sliding rod is slidably arranged in the limiting hole, the inner wall of the other side of the heat exchanger is provided with a limiting groove, and the limiting strip is slidably arranged in the limiting groove.

Preferably, the push plate is provided with a movable groove, and the expansion plate is slidably arranged in the movable groove.

Preferably, two T-shaped sliding grooves are formed in the bottom of the heat exchanger, T-shaped sliding blocks are arranged on the two baffle plates, and the two T-shaped sliding blocks are respectively and slidably arranged in the two T-shaped sliding grooves.

Compared with the prior art, the utility model has the beneficial effects that: through setting up of baffle, slag notch and push pedal isotructure down, the slag notch has been seted up down in the bottom of heat exchanger, make things convenient for the lime-ash to drop out from the slag notch down, be equipped with the baffle on the slag notch down, be the closed condition when using the heat exchanger and avoid the heat exchanger when using outside high-temperature ash gas to run out the heat exchanger, when need clear up the lime-ash, upwards promote the fixed plate and compress limit spring, the fixed plate upwards slides the one end that drives the connecting rod and rotates and upwards move, the other end is the arc motion and drives movable axial middle slip, thereby drive the slide bar to middle slip be close, and then drive the push pedal to middle slip and be close, the expansion plate slides on the push pedal, the bottom of expansion plate is contacted with the inner wall of heat exchanger all the time under the effect of gravity, push pedal pushes away down the slag notch, because the limiting effect of T type spout, the push pedal drives the one end of dwang to both sides slip when sliding to the centre, thereby drive two baffles to slide to both sides and open and drop into outside the heat exchanger with the lime-ash, thereby clean up, convenient and fast.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a sliding structure;

FIG. 3 is an internal cross-sectional view of the heat exchanger;

FIG. 4 is a cross-sectional view of a push plate coupled to a heat exchanger;

FIG. 5 is a cross-sectional view of the connection of the push plate to the expansion plate;

fig. 6 is a schematic structural view of the linkage structure.

In the figure, 1, a heat exchanger, 2, a baffle plate, 3, a retention block, 31, a limit column, 32, a limit spring, 33, a sliding block, 34, a retention chute, 35, a sliding hole, 4, a fixed plate, 41, a connecting rod, 42, a limit hole, 43, a sliding rod, 44, a push plate, 45, a limit bar, 46, a movable shaft, 47, a limit groove, 48, a telescopic plate, 49, a movable groove, 410, a movable hole, 5, a fixed block, 51, a rotating rod, 52, a connecting block, 53, a rotating hole, 54, a rotating shaft, 55, a fixed shaft, 6, a slag notch, 7, a T-shaped sliding block, 8 and a T-shaped chute.

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. 1-6, the present utility model provides a technical solution: the utility model provides an anti-coking device for circulating fluidized bed boiler, includes heat exchanger 1, and slag notch 6 has been seted up to the bottom of heat exchanger 1, and two baffle baffles 2 are installed to the bottom sliding motion of heat exchanger 1, and baffle baffles 2 and slag notch 6 looks adaptation, and sliding structure is installed to one side of heat exchanger 1, installs the pushing structure on the sliding structure, installs the linkage structure on the pushing structure; the pushing structure comprises a fixed plate 4, two connecting rods 41 are rotatably arranged on the fixed plate 4, a movable shaft 46 is movably arranged on the connecting rods 41, a sliding rod 43 is arranged on the movable shaft 46, the sliding rod 43 is slidably arranged on the heat exchanger 1, a push plate 44 is arranged on the sliding rod 43, a telescopic plate 48 is slidably arranged on the push plate 44, the telescopic plate 48 is contacted with the inner wall of the heat exchanger 1, a limit strip 45 is arranged on the push plate 44, the limit strip 45 is slidably arranged on the inner wall of the heat exchanger 1, when ash is required to be cleaned, the fixed plate 4 is pushed upwards, the fixed plate 4 slides upwards to drive one end of the connecting rod 41 to rotate and move upwards, the other end moves in an arc shape to drive the movable shaft 46 to slide towards the middle, so as to drive the sliding rod 43 to slide towards the middle and further drive the push plate 44 to slide towards the middle, and as the telescopic plate 48 slides on the push plate 44, the bottom of the telescopic plate 48 is always contacted with the inner wall of the heat exchanger 1 under the action of gravity, so that ash falling on the inner wall of the heat exchanger 1 is pushed towards the slag outlet 6.

Referring to fig. 6, in the present utility model, the linkage structure includes a fixed block 5, the fixed block 5 is mounted on a push plate 44, two rotating rods 51 are rotatably mounted on the fixed block 5, a connecting block 52 is rotatably mounted on the rotating rods 51, the connecting block 52 is mounted on a baffle plate 2, when the push plate 44 slides towards the middle, one end of the rotating rod 51 can be driven to rotate on the connecting block 52 and slide towards two sides, thereby driving the connecting block 52 to slide towards two sides, further driving the two baffle plate 2 to slide towards two sides and open to expose a slag notch 6, and ash is directly pushed to the slag notch 6 by a telescopic plate 48 to fall outside the heat exchanger 1, so that the ash is cleaned up, and the present utility model is convenient and fast.

Referring to fig. 2, in the present utility model, the sliding structure includes a fixing block 3, the fixing block 3 is mounted on the heat exchanger 1, a fixing chute 34 is provided on the fixing block 3, a sliding block 33 is slidably mounted in the fixing chute 34, the sliding block 33 is mounted on the fixing plate 4, a limit post 31 is slidably mounted on the sliding block 33, the limit post 31 is mounted on an inner wall of the fixing chute 34, the fixing chute 34 and the limit post 31 play a certain limiting role on the sliding block 33, so that the sliding block 33 can vertically move up and down, thereby driving the fixing plate 4 to vertically move up and down, and further enabling a push plate 44 to slide toward the middle or both sides to push ash out of the heat exchanger 1.

Referring to fig. 2, in the present utility model, a sliding hole 35 is formed on a sliding block 33, a limit post 31 is slidably mounted in the sliding hole 35, a limit spring 32 is sleeved on the limit post 31, one end of the limit spring 32 is mounted on the inner wall of a retention chute 34, the other end of the limit spring 32 is mounted on the sliding block 33, when a fixing plate 4 is pushed upwards, the limit spring 32 is compressed to the limit spring 32, after ash is pushed out of the heat exchanger 1, the fixing plate 4 is released, the limit spring 32 rebounds to drive the fixing plate 4 to restore to the original position, so as to drive a push plate 44 to restore to the original position, and further, a baffle plate 2 approaches to the middle until the slag notch 6 is blocked together, so as to prevent high-temperature ash from escaping when the heat exchanger 1 works.

Referring to fig. 6, in the present utility model, two rotation shafts 54 are installed on the fixed block 5, a fixed shaft 55 is installed on the connection block 52, two rotation holes 53 are opened on the rotation rod 51, the rotation shafts 54 and the fixed shaft 55 are respectively rotatably installed in the two rotation holes 53, and the rotation holes 53 enable the rotation rod 51 to rotate to open or close the baffle plate 2 to both sides.

Referring to fig. 2, in the present utility model, a movable hole 410 is formed on a connecting rod 41, a movable shaft 46 is movably mounted in the movable hole 410, a limiting hole 42 is formed on one side of the heat exchanger 1, a sliding rod 43 is slidably mounted in the limiting hole 42, a limiting groove 47 is formed on the inner wall of the other side of the heat exchanger 1, a limiting bar 45 is slidably mounted in the limiting groove 47, a fixed plate 4 slides upward to drive one end of the connecting rod 41 to rotate and move upward, and due to the limiting action of the limiting hole 42, the other end of the connecting rod 41 moves in an arc shape to drive the movable shaft 46 to slide toward the middle, the limiting hole 42 and the limiting groove 47 play a certain limiting action on a push plate 44, so that the push plate 44 can slide horizontally.

Referring to fig. 5, in the present utility model, a movable groove 49 is formed on a push plate 44, a telescopic plate 48 is slidably mounted in the movable groove 49, the telescopic plate 48 slides on the push plate 44, and under the action of gravity, the bottom of the telescopic plate 48 can always contact with the inner wall of the heat exchanger 1, so as to push ash falling on the inner wall of the heat exchanger 1 to the slag outlet 6.

Referring to fig. 1 and 6, in the utility model, two T-shaped sliding grooves 8 are formed in the bottom of a heat exchanger 1, T-shaped sliding blocks 7 are mounted on two baffle plates 2, the two T-shaped sliding blocks 7 are respectively and slidably mounted in the two T-shaped sliding grooves 8, the T-shaped sliding blocks 7 and the T-shaped sliding grooves 8 play a certain limiting role on the baffle plates 2, when a push plate 44 slides towards the middle, one end of a rotating rod 51 can be driven to rotate on a connecting block 52 and slide towards two sides, so that the connecting block 52 is driven to slide towards two sides, and further the two baffle plates 2 are driven to slide towards two sides to open a slag notch 6 to expose, so that slag falls outside the heat exchanger 1.

The working principle of the utility model is as follows: when ash is required to be cleaned, the fixed plate 4 is pushed upwards and compressed to the limit spring 32, the fixed plate 4 slides upwards to drive one end of the connecting rod 41 to rotate and move upwards, the other end of the connecting rod 41 moves in an arc shape to drive the movable shaft 46 to slide towards the middle due to the limit function of the limit hole 42, so as to drive the sliding rod 43 to slide towards the middle and further drive the push plate 44 to slide towards the middle, the bottom of the telescopic plate 48 always contacts with the inner wall of the heat exchanger 1 due to the sliding of the telescopic plate 48 on the push plate 44 under the action of gravity, ash falling on the inner wall of the heat exchanger 1 is pushed to the lower slag hole 6, the push plate 44 slides towards the middle and simultaneously drives one end of the rotating rod 51 to rotate on the connecting block 52 and slide towards two sides due to the limit function of the T-shaped chute 8, so as to drive the connecting block 52 to slide towards two sides, and then drive two baffle baffles 2 to slide to both sides and open and expose lower cinder notch 6, the lime-ash is directly pushed to lower cinder notch 6 by expansion plate 48 and falls into outside heat exchanger 1, thereby clean up the lime-ash, convenient and fast, loosen fixed plate 4, spacing spring 32 resilience drives fixed plate 4 and slides down and resumes the normal position, thereby drive the one end of connecting rod 41 and rotate and slide down, the other end is arc motion and drives loose axle 46 to both sides slip, thereby drive push pedal 44 to both sides slip, push pedal 44 to both sides slip drives fixed block 5 to both sides slip, thereby drive the one end of dwang 51 to the centre slip be close to, and then drive two baffle baffles 2 to the centre slip be close until closing together and block lower cinder notch 6, prevent that the high temperature ash gas from running out when using heat exchanger 1.

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

Claims

1. An anti-coking device for a circulating fluidized bed boiler, which comprises a heat exchanger (1), and is characterized in that: a slag notch (6) is formed in the bottom of the heat exchanger (1), two baffle plates (2) are slidably mounted at the bottom of the heat exchanger (1), the baffle plates (2) are matched with the slag notch (6), a sliding structure is mounted on one side of the heat exchanger (1), a pushing structure is mounted on the sliding structure, and a linkage structure is mounted on the pushing structure;

the pushing structure comprises a fixed plate (4), two connecting rods (41) are rotatably arranged on the fixed plate (4), a movable shaft (46) is movably arranged on the connecting rods (41), a sliding rod (43) is arranged on the movable shaft (46), the sliding rod (43) is slidably arranged on the heat exchanger (1), a push plate (44) is arranged on the sliding rod (43), a telescopic plate (48) is slidably arranged on the push plate (44), the telescopic plate (48) is in contact with the inner wall of the heat exchanger (1), a limiting strip (45) is arranged on the push plate (44), and the limiting strip (45) is slidably arranged on the inner wall of the heat exchanger (1).

2. An anti-coking device for a circulating fluidized bed boiler according to claim 1, characterized in that: the linkage structure comprises a fixed block (5), the fixed block (5) is arranged on a push plate (44), two rotating rods (51) are rotatably arranged on the fixed block (5), connecting blocks (52) are rotatably arranged on the rotating rods (51), and the connecting blocks (52) are arranged on a baffle plate (2).

3. An anti-coking device for a circulating fluidized bed boiler according to claim 1, characterized in that: the sliding structure comprises a fixing block (3), the fixing block (3) is arranged on the heat exchanger (1), a fixing sliding groove (34) is formed in the fixing block (3), a sliding block (33) is arranged in the fixing sliding groove (34), the sliding block (33) is arranged on the fixing plate (4), a limiting column (31) is arranged on the sliding block (33) in a sliding mode, and the limiting column (31) is arranged on the inner wall of the fixing sliding groove (34).

4. An anti-coking device for a circulating fluidized bed boiler according to claim 3, characterized in that: the sliding hole (35) is formed in the sliding block (33), the limiting column (31) is slidably mounted in the sliding hole (35), the limiting spring (32) is sleeved on the limiting column (31), one end of the limiting spring (32) is mounted on the inner wall of the retaining chute (34), and the other end of the limiting spring (32) is mounted on the sliding block (33).

5. An anti-coking device for a circulating fluidized bed boiler according to claim 2, characterized in that: two rotating shafts (54) are arranged on the fixed block (5), a fixed shaft (55) is arranged on the connecting block (52), two rotating holes (53) are formed in the rotating rod (51), and the rotating shafts (54) and the fixed shaft (55) are respectively and rotatably arranged in the two rotating holes (53).

6. An anti-coking device for a circulating fluidized bed boiler according to claim 1, characterized in that: a movable hole (410) is formed in the connecting rod (41), a movable shaft (46) is movably mounted in the movable hole (410), a limiting hole (42) is formed in one side of the heat exchanger (1), a sliding rod (43) is slidably mounted in the limiting hole (42), a limiting groove (47) is formed in the inner wall of the other side of the heat exchanger (1), and a limiting strip (45) is slidably mounted in the limiting groove (47).

7. An anti-coking device for a circulating fluidized bed boiler according to claim 1, characterized in that: the push plate (44) is provided with a movable groove (49), and the expansion plate (48) is slidably arranged in the movable groove (49).

8. An anti-coking device for a circulating fluidized bed boiler according to claim 1, characterized in that: two T-shaped sliding grooves (8) are formed in the bottom of the heat exchanger (1), T-shaped sliding blocks (7) are arranged on the two baffle plates (2), and the two T-shaped sliding blocks (7) are respectively and slidably arranged in the two T-shaped sliding grooves (8).