A reinforced and deformation-resistant circulating fluidized bed boiler center cylinder

Abstract

This utility model relates to the field of circulating fluidized bed boiler technology, specifically to a reinforced and deformation-resistant circulating fluidized bed boiler center cylinder, including a first center cylinder and a splicing assembly; a second center cylinder is disposed on the bottom surface of the first center cylinder. This utility model incorporates a connecting ring, which constrains the radial expansion and contraction of the first and second center cylinders through a ring structure, reducing deformation of the first and second center cylinders due to pressure, temperature, or weight, thereby improving the structural strength and stability of the assembled first and second center cylinders of the circulating fluidized bed boiler.

Description

Technical Field

[0001] This utility model relates to the field of circulating fluidized bed boiler technology, specifically to a reinforced and deformation-resistant circulating fluidized bed boiler center cylinder. Background Technology

[0002] The central cylinder of a circulating fluidized bed boiler is the core internal component of the boiler's cyclone separator. Its core function is to optimize the flue gas flow field within the separator, ensure gas-solid separation efficiency, and directly affect the circulating combustion effect and operational stability of the CFB boiler.

[0003] In the prior art, Chinese patent publication number CN222503833U discloses a central cylinder for a circulating fluidized bed boiler. This patent involves inserting multiple sets of arc plates into slots via insert rods, and installing protective plates and anti-expansion rings on the arc plates. The protective plates and anti-expansion rings pass through stop blocks via through slots. Simultaneously, a swinging pull plate compresses a spring, causing a movable block to retract. Rotating the protective plates and anti-expansion rings causes the stop blocks to insert into the mounting slots, fixing the arc plates. When it is necessary to remove the protective plates and anti-expansion rings, the pull plate is swung, causing the compression spring to pop out the movable block, which then ejects the protective plates and anti-expansion rings, facilitating transportation and easy disassembly when parts are damaged.

[0004] However, in the above scheme, since the central cylinder needs to be spliced ​​and installed during use, multiple gaps will be left after the splicing. During use, high-temperature flue gas may leak from the splicing gaps, affecting the boiler's thermal efficiency and reducing the structural strength of the central cylinder. Utility Model Content

[0005] The purpose of this invention is to provide a reinforced and deformation-resistant circulating fluidized bed boiler center cylinder to solve the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A reinforced and deformation-resistant circulating fluidized bed boiler center cylinder includes a first center cylinder and a splicing assembly. A second center cylinder is disposed on the bottom surface of the first center cylinder. The splicing assembly is disposed on the bottom surface of the first center cylinder and is used to splice the first center cylinder and the second center cylinder. The splicing assembly includes a connecting ring disposed on the bottom surface of the first center cylinder. A first splicing groove is formed on the top surface of the connecting ring, and the first splicing groove is fixedly sleeved with the first center cylinder. A second splicing groove is formed on the bottom surface of the connecting ring, and the second splicing groove is fixedly sleeved with the second center cylinder. Annular blocks are fixedly sleeved on the outer circular walls of the first center cylinder and the second center cylinder, and annular reinforcing ribs are provided between the two annular blocks. Mounting rings are fixedly sleeved on the outer circular walls of the first center cylinder and the second center cylinder, and connecting blocks are fixedly installed on the top surface of the upper mounting ring and the bottom surface of the lower mounting ring, respectively.

[0007] Preferably, the outer circular walls of the first central cylinder and the second central cylinder are respectively fixedly sleeved with fixing rings, the outer circular wall of the fixing ring is provided with an installation groove, and the inner circular wall of the installation groove is fixedly sleeved with a connecting rib.

[0008] Preferably, a plurality of reinforcing rings are fixedly sleeved on the inner circular walls of the first central cylinder and the second central cylinder, and a plurality of connecting plates are fixedly installed on the sides of the two reinforcing rings that are close to each other.

[0009] Preferably, the inner circular walls of the first central cylinder and the second central cylinder are provided with wear-resistant layers, and the wear-resistant layers are fixedly sleeved with the reinforcing ring.

[0010] Preferably, the inner circular wall surface of the second central cylinder is provided with a heat-resistant layer, and the heat-resistant layer is fixedly sleeved with the wear-resistant layer.

[0011] Preferably, the inner circular wall surface of the connecting ring is provided with a wear-resistant and heat-resistant coating.

[0012] Preferably, the wear-resistant layer and the interior of the connecting ring are provided with a corrosion-resistant coating.

[0013] Compared with the prior art, the present invention has the following beneficial effects: Equipped with a connecting ring, during use, the first central cylinder is placed inside the first splicing groove, and the second central cylinder is pushed upward into the second splicing groove for fixation, so that the first and second central cylinders are installed together through the connecting ring. Then, the gaps between the first and second central cylinders and the connecting ring are filled and polished. After that, the annular block and annular reinforcing rib are installed on the first and second central cylinders for reinforcement. The annular structure constrains the radial expansion and contraction of the first and second central cylinders, reducing the deformation of the first and second central cylinders caused by pressure, temperature or weight, thereby improving the structural strength and stability of the first and second central cylinders after assembly in the circulating fluidized bed boiler. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the annular reinforcing rib in this utility model; Figure 3 This is a schematic diagram of the heat-resistant layer in this utility model; Figure 4 This is a schematic diagram of the reinforcing ring in this utility model; Figure 5 This is a schematic diagram of the structure of the fixing ring in this utility model; Figure 6 This is a schematic diagram of the connecting ring in this utility model.

[0015] Reference numerals: 1. First central cylinder; 2. Second central cylinder; 3. Connecting ring; 4. First splicing groove; 5. Second splicing groove; 6. Reinforcing ring; 7. Connecting plate; 8. Wear-resistant layer; 9. Fixing ring; 10. Mounting groove; 11. Connecting rib; 12. Heat-resistant layer; 13. Mounting ring; 14. Connecting block; 15. Annular block; 16. Annular reinforcing rib. Detailed Implementation

[0016] 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. Example 1

[0017] refer to Figures 1-6This embodiment describes a reinforced and deformation-resistant circulating fluidized bed boiler center cylinder, comprising a first center cylinder 1 and a splicing assembly. A second center cylinder 2 is disposed on the bottom surface of the first center cylinder 1; the splicing assembly is disposed on the bottom surface of the first center cylinder 1 and is used to splice the first center cylinder 1 and the second center cylinder 2.

[0018] The splicing assembly includes a connecting ring 3, which is disposed on the bottom surface of the first central cylinder 1. A first splicing groove 4 is formed on the top surface of the connecting ring 3, and the first splicing groove 4 is fixedly sleeved with the first central cylinder 1. A second splicing groove 5 is formed on the bottom surface of the connecting ring 3, and the second splicing groove 5 is fixedly sleeved with the second central cylinder 2. Annular blocks 15 are fixedly sleeved on the outer circular walls of the first central cylinder 1 and the second central cylinder 2, respectively. Annular reinforcing ribs 16 are provided between the two annular blocks 15. Mounting rings 13 are fixedly sleeved on the outer circular walls of the first central cylinder 1 and the second central cylinder 2, respectively. Connecting blocks 14 are fixedly installed on the top surface of the upper mounting ring 13 and the bottom surface of the lower mounting ring 13, respectively.

[0019] By setting a connecting ring 3, when assembling the first central cylinder 1 and the second central cylinder 2, the first central cylinder 1 is first placed inside the first splicing groove 4 on the connecting ring 3, and the second central cylinder 2 is fixed by pushing it upward into the inside of the second splicing groove 5 on the connecting ring 3, so that the first central cylinder 1 and the second central cylinder 2 are installed together through the connecting ring 3. Then, the gaps generated between the first central cylinder 1, the second central cylinder 2 and the connecting ring 3 are filled and ground to eliminate the gaps generated by splicing and make them flush with the first central cylinder 1 and the second central cylinder 2, avoiding weld protrusion. Then, the annular block 15 and the annular reinforcing rib 16 are installed on the first central cylinder 1 and the second central cylinder 2 for reinforcement. The annular structure constrains the radial expansion and contraction of the first central cylinder 1 and the second central cylinder 2, reducing the deformation of the first central cylinder 1 and the second central cylinder 2 caused by pressure, temperature or weight, thereby improving the structural strength and stability of the first central cylinder 1 and the second central cylinder 2 after assembly of the circulating fluidized bed boiler, and suppressing the deformation or vibration of the first central cylinder 1 and the second central cylinder 2 during use. Example 2

[0020] refer to Figures 1-6 Based on Embodiment 1 above, in the reinforced and deformation-resistant circulating fluidized bed boiler central cylinder described in this embodiment, fixing rings 9 are fixedly sleeved on the outer circular walls of the first central cylinder 1 and the second central cylinder 2, respectively. An installation groove 10 is formed on the outer circular wall of the fixing ring 9, and a connecting rib 11 is fixedly sleeved on the inner circular wall of the installation groove 10. By setting the connecting rib 11, the fixing rings 9, the installation groove 10, and the connecting rib 11 can improve the structural strength of the first central cylinder 1 and the second central cylinder 2, preventing deformation or damage when the first central cylinder 1 and the second central cylinder 2 are subjected to force, and further improving the structural strength of the first central cylinder 1 and the second central cylinder 2 during use.

[0021] Several reinforcing rings 6 are fixedly fitted onto the inner circular walls of the first central cylinder 1 and the second central cylinder 2. Several connecting plates 7 are fixedly installed on the sides of the two reinforcing rings 6 that are close to each other. By setting the reinforcing rings 6, the reinforcing rings 6 and the connecting plates 7 can provide support inside the first central cylinder 1 and the second central cylinder 2, preventing the first central cylinder 1 and the second central cylinder 2 from easily deforming when heated.

[0022] The inner circular walls of the first central cylinder 1 and the second central cylinder 2 are provided with wear-resistant layers 8. The wear-resistant layers 8 are fixedly sleeved with the reinforcing ring 6. By providing the wear-resistant layers 8, the wear-resistant layers 8 have a highly efficient anti-wear effect. When high-speed fluid or solid particles scour the inside of the first central cylinder 1 and the second central cylinder 2, the wear-resistant layers 8 can withstand the friction and scouring, preventing the first central cylinder 1 or the second central cylinder 2 from being worn through.

[0023] The inner circular wall of the second central cylinder 2 is provided with a heat-resistant layer 12, which is fixedly sleeved with the wear-resistant layer 8. By providing the heat-resistant layer 12, the second central cylinder 2 is installed at the outlet of the circulating fluidized bed boiler. The heat-resistant layer 12 inside the second central cylinder 2 has the function of heat insulation and high temperature resistance, preventing the second central cylinder 2 from being softened and deformed by high temperature.

[0024] The inner circular wall of the connecting ring 3 is provided with a wear-resistant and heat-resistant coating to reduce the wear and high temperature of the connecting ring 3 and prevent damage to the connecting ring 3 from affecting the assembly between the first central cylinder 1 and the second central cylinder 2. The wear-resistant layer 8 and the interior of the connecting ring 3 are provided with a corrosion-resistant coating to avoid contact with corrosive media, which would cause the connecting ring 3 and the wear-resistant layer 8 to be chemically corroded and damaged.

[0025] refer to Figures 1-6As shown, the working principle of this utility model is as follows: By setting the connecting ring 3, when assembling the first center cylinder 1 and the second center cylinder 2, the first center cylinder 1 is first placed inside the first splicing groove 4 on the connecting ring 3, and the second center cylinder 2 is fixed by pressing it upward into the inside of the second splicing groove 5 on the connecting ring 3, so that the first center cylinder 1 and the second center cylinder 2 are installed together by the connecting ring 3. Then, the gaps between the first center cylinder 1, the second center cylinder 2 and the connecting ring 3 are filled and polished to eliminate the gaps generated by the splicing and make them flush with the first center cylinder 1 and the second center cylinder 2, avoiding weld protrusion. Then, the annular block 15 and the annular reinforcing rib 16 are installed on the first center cylinder. The first central cylinder 1 and the second central cylinder 2 are reinforced. The radial expansion and contraction of the first central cylinder 1 and the second central cylinder 2 are constrained by the ring structure, which reduces the deformation of the first central cylinder 1 and the second central cylinder 2 caused by pressure, temperature or weight. The fixing ring 9, the mounting groove 10 and the connecting rib 11 installed on the outside of the first central cylinder 1 and the second central cylinder 2 can improve the structural strength of the first central cylinder 1 and the second central cylinder 2, and prevent the first central cylinder 1 and the second central cylinder 2 from easily deforming or being damaged when subjected to force. This improves the structural strength and stability of the first central cylinder 1 and the second central cylinder 2 after assembly of the circulating fluidized bed boiler, and suppresses the deformation or vibration of the first central cylinder 1 and the second central cylinder 2 during use.

[0026] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A reinforced, deformation tolerant, circulating fluidized bed boiler central cylinder, characterized by: It includes a first central tube (1) and a splicing assembly; a second central tube (2) is provided on the bottom surface of the first central tube (1); the splicing assembly is provided on the bottom surface of the first central tube (1) and is used to splice the first central tube (1) and the second central tube (2); The splicing assembly includes a connecting ring (3), which is disposed on the bottom surface of the first central cylinder (1). A first splicing groove (4) is provided on the top surface of the connecting ring (3), and the first splicing groove (4) is fixedly sleeved with the first central cylinder (1). A second splicing groove (5) is provided on the bottom surface of the connecting ring (3), and the second splicing groove (5) is fixedly sleeved with the second central cylinder (2). Annular blocks (15) are fixedly sleeved on the outer circular walls of the first central cylinder (1) and the second central cylinder (2). Annular reinforcing ribs (16) are provided between the two annular blocks (15). Mounting rings (13) are fixedly sleeved on the outer circular walls of the first central cylinder (1) and the second central cylinder (2). Connecting blocks (14) are fixedly installed on the top surface of the upper mounting ring (13) and the bottom surface of the lower mounting ring (13).

2. A reinforced, deformation tolerant, circulating fluidized bed boiler central cylinder according to claim 1, characterized in that: The outer circular walls of the first central cylinder (1) and the second central cylinder (2) are respectively fixedly sleeved with fixing rings (9). The outer circular wall of the fixing ring (9) is provided with an installation groove (10), and the inner circular wall of the installation groove (10) is fixedly sleeved with a connecting rib (11).

3. A reinforced, deformation tolerant, circulating fluidized bed boiler central cylinder according to claim 1, characterized in that: A number of reinforcing rings (6) are fixedly sleeved on the inner circular wall surfaces of the first central cylinder (1) and the second central cylinder (2), and a number of connecting plates (7) are fixedly installed on the side of the two reinforcing rings (6) that are close to each other.

4. A reinforced, deformation tolerant, circulating fluidized bed boiler central cylinder according to claim 3, characterized in that: The inner circular walls of the first central cylinder (1) and the second central cylinder (2) are provided with wear-resistant layers (8), and the wear-resistant layers (8) are fixedly sleeved with the reinforcing ring (6).

5. A reinforced, deformation tolerant, circulating fluidized bed boiler central cylinder according to claim 4, characterized in that: The inner circular wall of the second central cylinder (2) is provided with a heat-resistant layer (12), and the heat-resistant layer (12) is fixedly sleeved with the wear-resistant layer (8).

6. A reinforced, deformation tolerant, circulating fluidized bed boiler central cylinder according to claim 1, characterized in that: The inner circular wall of the connecting ring (3) is provided with a wear-resistant and heat-resistant coating.

7. A reinforced, deformation tolerant, circulating fluidized bed boiler central cylinder according to claim 4, characterized in that: The wear-resistant layer (8) and the interior of the connecting ring (3) are provided with a corrosion-resistant coating.

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