Abrasion-proof device for heating surface of supercritical circulating fluidized bed boiler

Abstract

The utility model discloses an anti-abrasion device for a heating surface of a supercritical circulating fluidized bed boiler, and relates to the technical field of boilers. The device comprises a combustion barrel, wherein a crushing mechanism and an ash cleaning mechanism are arranged on the combustion barrel; the smashing mechanism comprises a smashing box arranged at the top of the combustion barrel in a communicating mode, a first rotating shaft is rotationally connected into the smashing box, a hollow rod is rotationally connected to the outer wall of the first rotating shaft, a first gear is fixedly connected to the outer wall of the first rotating shaft, and an inner gear is fixedly connected to the outer wall of the first rotating shaft. The ash removal mechanism comprises a first sliding groove formed in the combustion barrel. By arranging the smashing mechanism, the problems that combustion materials of a traditional device are large in mass, impact towards the inner wall of the combustion barrel at a high speed under the influence of various factors such as gravity and airflow in the combustion process, strong impact force can be generated when the combustion materials collide with the inner wall, and the inner wall of the combustion barrel is seriously impacted and abraded continuously are solved.

Description

Technical Field

[0001] This utility model belongs to the field of boiler technology, and in particular relates to an anti-wear device for the heating surface of a supercritical circulating fluidized bed boiler. Background Technology

[0002] Supercritical circulating fluidized bed boilers have been widely used in the modern energy field due to their significant advantages such as high efficiency, cleanliness, and strong fuel adaptability. In the power generation industry, they have become one of the key equipment for achieving efficient power generation and environmental emission reduction. They can effectively burn various types of coal, including some low-quality coal, which greatly improves the utilization efficiency of coal resources.

[0003] However, in the use of existing anti-wear devices for the heating surfaces of supercritical circulating fluidized bed boilers, the combustion material of traditional devices has a large mass. During the combustion process, it is affected by gravity, airflow and other factors, and rushes towards the inner wall of the combustion chamber at high speed. When it collides with the inner wall, it will generate a strong impact force, which will continuously cause serious impact wear on the inner wall of the combustion chamber. Utility Model Content

[0004] The purpose of this invention is to provide a wear-resistant device for the heating surface of a supercritical circulating fluidized bed boiler. By setting up a crushing mechanism, it solves the problem that the combustion material of traditional devices has a large mass and, during the combustion process, is affected by gravity, airflow and other factors, rushes towards the inner wall of the combustion chamber at high speed. When it collides with the inner wall, it generates a strong impact force, which continuously causes serious impact wear on the inner wall of the combustion chamber.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a wear-resistant device for the heating surface of a supercritical circulating fluidized bed boiler, including a combustion barrel, on which a crushing mechanism and a ash-removing mechanism are provided;

[0007] The pulverizing mechanism includes a pulverizing box connected to the top of the combustion barrel. A rotating shaft is rotatably connected inside the pulverizing box. A hollow rod is rotatably connected to the outer wall of the rotating shaft. A gear is fixedly connected to the outer wall of the rotating shaft. An internal gear is fixedly connected to the outer wall of the rotating shaft. The ash removal mechanism includes a sliding groove formed on the combustion barrel.

[0008] Furthermore, an air inlet is connected to the top of the combustion chamber, and a blower is fixedly connected inside the air inlet. An air outlet is also connected to the top of the combustion chamber.

[0009] Furthermore, a second rotating shaft is rotatably connected to the internal gear, and a gear is fixedly connected to the outer wall of the second rotating shaft. The gear meshes with the first gear and with the internal gear.

[0010] Furthermore, a motor frame is fixedly connected to the front side of the crushing box, and a motor is fixedly connected inside the motor frame. The output shaft of the motor is fixedly connected to a rotating shaft through a coupling.

[0011] Furthermore, a fixing frame 1 is fixedly connected to the outer wall of the hollow rod, and a plurality of crushing rods 1 are fixedly connected to the fixing frame 1. A fixing frame 2 is fixedly connected to the outer wall of the rotating shaft 1, and a crushing rod 2 is fixedly connected to the fixing frame 2.

[0012] Furthermore, a collection box is slidably connected inside the first chute, and a handle is fixedly connected to the outer wall of the collection box. A second chute is provided on the combustion barrel, and a combustion plate is slidably connected inside the second chute.

[0013] 1. By setting up a crushing mechanism and starting the motor on the motor frame, the combustible material is placed in the crushing box. When the motor rotates, the first rotating shaft will also rotate, and the hollow rod on the first rotating shaft will also rotate. This will drive the gear on the second rotating shaft. When the gear rotates, the first gear will also rotate. At this time, the internal gear and the first gear rotate in the same direction. Thus, the first rotating shaft and the hollow rod also rotate in the same direction. Due to the size difference between the first gear and the internal gear, there is a speed difference when the first and second fixed frames rotate. When the first and second fixed frames rotate, they will drive the first and second crushing rods to rotate simultaneously, which will crush the combustible material. The crushed combustible material will become fine, which will reduce the wear on the combustion barrel and thus achieve the effect of preventing wear on the combustion barrel. After the combustible material is crushed into fine particles, the mass and inertia of the particles are significantly reduced, and the impact force generated when colliding with the inner wall of the combustion barrel is also reduced accordingly, thereby reducing the wear on the combustion barrel caused by impact.

[0014] 2. By setting up an ash-cleaning mechanism, the burning material falls onto the combustion plate as it burns. As the material continues to burn, it turns into ash. The fully burned material falls from the combustion plate into the collection box. As combustion continues, the collection box will fill up. Then, the handle can be pulled, and the collection box will be pulled out from the first slide. The ash in the collection box can then be emptied. The combustion plate can then be pulled out from the second slide for cleaning. This ensures that the combustion efficiency will not be affected during the next combustion, and facilitates timely ash removal. This prevents excessive ash accumulation in the combustion chamber, which would affect the combustion effect and ventilation. It also makes ash disposal more convenient and reduces environmental pollution.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial cross-sectional view of the crushing mechanism of this utility model;

[0019] Figure 3 This is a partial structural schematic diagram of the combustion plate of this utility model;

[0020] Figure 4 This is a partial structural schematic diagram of the slide groove of this utility model;

[0021] Figure 5 This utility model Figure 2 A magnified structural diagram of A in the diagram.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Combustion barrel; 101. Air inlet; 102. Blower; 103. Air outlet; 2. Crushing mechanism; 211. Crushing box; 212. Shaft 1; 213. Hollow rod; 214. Gear 1; 215. Internal gear; 216. Shaft 2; 217. Gear; 218. Motor frame; 219. Motor; 2110. Fixing frame 1; 2111. Crushing rod 1; 2112. Fixing frame 2; 2113. Crushing rod 2; 3. Ash removal mechanism; 311. Slide 1; 312. Collection box; 313. Handle; 314. Slide 2; 315. Combustion plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-5As shown, this utility model is a wear-resistant device for the heating surface of a supercritical circulating fluidized bed boiler, including a combustion chamber 1. A pulverizing mechanism 2 and a ash-removing mechanism 3 are installed on the combustion chamber 1. The pulverizing mechanism 2 includes a pulverizing box 211 connected to the top of the combustion chamber 1. A rotating shaft 212 is rotatably connected inside the pulverizing box 211. A hollow rod 213 is rotatably connected to the outer wall of the rotating shaft 212. A gear 214 is fixedly connected to the outer wall of the rotating shaft 212. An internal gear 215 is fixedly connected to the outer wall of the rotating shaft 212. An air inlet 101 is connected to the top of the combustion chamber 1. A blower 102 is fixedly connected inside the air inlet 101. An air outlet 103 is connected to the top of the combustion chamber 1. A rotating shaft 216 is rotatably connected inside the internal gear 215. A gear 217 is fixedly connected to the outer wall of the rotating shaft 216. Gear 217 meshes with gear 214, gear 217 meshes with internal gear 215, a motor frame 218 is fixedly connected to the front side of the crushing box 211, a motor 219 is fixedly connected inside the motor frame 218, the output shaft of the motor 219 is fixedly connected to the rotating shaft 212 through a coupling, a fixing frame 2110 is fixedly connected to the outer wall of the hollow rod 213, a number of crushing rods 2111 are fixedly connected to the fixing frame 2110, a fixing frame 2112 is fixedly connected to the outer wall of the rotating shaft 212, and a crushing rod 2113 is fixedly connected to the fixing frame 2112. By setting the crushing mechanism 2, the mass and inertia of the particles are significantly reduced after the combustion material is crushed into fine particles, and the impact force generated when colliding with the inner wall of the combustion barrel is also reduced accordingly, thereby reducing the wear of the combustion barrel caused by the impact.

[0026] The ash removal mechanism 3 includes a first chute 311 on the combustion barrel 1, a collection box 312 slidably connected in the first chute 311, a handle 313 fixedly connected to the outer wall of the collection box 312, a second chute 314 on the combustion barrel 1, and a combustion plate 315 slidably connected in the second chute 314. By setting up the ash removal mechanism 3, it is easy to clean the ash in a timely manner, thereby avoiding excessive accumulation of ash in the combustion barrel, which would affect the combustion effect and ventilation. At the same time, it also makes the ash disposal more convenient and reduces environmental pollution.

[0027] A specific application of this embodiment is as follows: During use, the motor 219 on the motor frame 218 is started. Then, the burning material is placed in the crushing box 211. When the motor 219 rotates, the first rotating shaft 212 also rotates, and the hollow rod 213 on the first rotating shaft 212 also rotates. This drives the gear 217 on the second rotating shaft 216. When the gear 217 rotates, the first gear 214 also rotates. At this time, the internal gear 215 and the first gear 214 rotate in the same direction. Therefore, the first rotating shaft 212 and the hollow rod 213 also rotate in the same direction. Due to the size difference between the first gear 214 and the internal gear 215, there is a speed difference when the first fixed frame 2110 and the second fixed frame 2112 rotate. When the first fixed frame 2110 and the second fixed frame 2112 rotate, they drive the crushing rod 2111 and the powder... Simultaneously rotating the second crushing rod 2113, the burning material is pulverized. The pulverized material becomes fine, thus reducing wear on the combustion chamber 1 and preventing wear. As the burning material falls, it lands on the combustion plate 315. As the burning material continues to burn, it turns into ash. The fully burned material falls from the combustion plate 315 into the collection box 312. As the burning continues, the collection box 312 will fill up. Then, the handle 313 can be pulled, and the collection box 312 will be pulled out from the first chute 311. The ash in the collection box 312 can then be emptied. The combustion plate 315 can then be pulled out from the second chute 314 and cleaned, so that the combustion efficiency will not be affected in the next combustion.

[0028] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A supercritical circulating fluidized bed boiler heating surface anti-erosion device, characterized in that: It includes a combustion barrel (1), and the combustion barrel (1) is provided with a crushing mechanism (2) and a dust removal mechanism (3); The crushing mechanism (2) includes a crushing box (211) connected to the top of the combustion barrel (1). A rotating shaft (212) is rotatably connected inside the crushing box (211). A hollow rod (213) is rotatably connected to the outer wall of the rotating shaft (212). A gear (214) is fixedly connected to the outer wall of the rotating shaft (212). An internal gear (215) is fixedly connected to the outer wall of the rotating shaft (212). The ash removal mechanism (3) includes a sliding groove (311) opened on the combustion barrel (1).

2. A supercritical circulating fluidized bed boiler heating surface anti-erosion device according to claim 1, characterized in that, The top of the combustion chamber (1) is connected to an air inlet (101), a blower (102) is fixedly connected inside the air inlet (101), and the top of the combustion chamber (1) is connected to an air outlet (103).

3. A supercritical circulating fluidized bed boiler heating surface anti-erosion device according to claim 2, characterized in that, The inner gear (215) is rotatably connected to a second shaft (216), and a gear (217) is fixedly connected to the outer wall of the second shaft (216). The gear (217) meshes with the first gear (214), and the gear (217) meshes with the inner gear (215).

4. A supercritical circulating fluidized bed boiler heating surface anti-erosion device according to claim 3, characterized in that, A motor frame (218) is fixedly connected to the front side of the crushing box (211), and a motor (219) is fixedly connected inside the motor frame (218). The output shaft of the motor (219) is fixedly connected to the rotating shaft (212) through a coupling.

5. A supercritical circulating fluidized bed boiler heating surface anti-erosion device according to claim 4, characterized in that, The outer wall of the hollow rod (213) is fixedly connected to a fixing frame (2110), and a plurality of crushing rods (2111) are fixedly connected to the fixing frame (2110).

6. A supercritical circulating fluidized bed boiler heating surface anti-erosion device according to claim 5, characterized in that, The outer wall of the rotating shaft (212) is fixedly connected to the fixing frame (2112), and the crushing rod (2113) is fixedly connected to the fixing frame (2112).

7. A supercritical circulating fluidized bed boiler heating surface anti-erosion device according to claim 6, characterized in that, A collection box (312) is slidably connected inside the chute (311), and a handle (313) is fixedly connected to the outer wall of the collection box (312).

8. A supercritical circulating fluidized bed boiler heating surface anti-erosion device according to claim 7, characterized in that, The combustion barrel (1) is provided with a second sliding groove (314), and a combustion plate (315) is slidably connected in the second sliding groove (314).

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