Ceramic fiber composite structure for wear layer of power plant boiler cyclone separator

Abstract

The utility model relates to the technical field of cyclone separator wear -resistant layer structure, and disclose power plant boiler cyclone separator wear -resistant layer ceramic fibre composite structure, including setting on the inner lining of cylinder inner wall, the inner lining includes a plurality of composite spare that assemble, this power plant boiler cyclone separator wear -resistant layer ceramic fibre composite structure, through setting up the inner lining of by a plurality of composite spare assemble on the cylinder inner wall, through the wear -resistant contact layer to the solid particle in high -temperature airflow is defended to and through the heat -insulating layer insulates high temperature, protects the cylinder.

Description

Technical Field

[0001] This utility model relates to the technical field of wear-resistant layer structure of cyclone separators, specifically to the ceramic fiber composite structure of wear-resistant layer of cyclone separators for power plant boilers. Background Technology

[0002] A cyclone separator is a device used for separating gas-solid or liquid-solid systems. Its working principle is based on the rotational motion caused by the tangential introduction of airflow, which throws solid particles or liquid droplets with large inertial centrifugal force toward the outer wall surface and separates them. During the use of a cyclone separator, it is found that the high-temperature airflow containing particles introduced by the tangential airflow will directly contact and collide with the intermediate cylinder. The inner wall of the intermediate cylinder will be constantly subjected to collisions and erosion by high-speed solid particles. Over time, this will cause the intermediate cylinder to be worn through. Moreover, the high temperature will weaken the metal strength of the intermediate cylinder, significantly aggravating the wear effect of high-speed solid particles on the intermediate cylinder, making it easier to be worn through.

[0003] Therefore, we proposed a ceramic fiber composite structure for the wear-resistant layer of a power plant boiler cyclone separator to address the problems mentioned above. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in the operation of existing cyclone separators, the inner wall of the intermediate cylinder is constantly subjected to collisions and erosion by high-speed solid particles, which over a long period of time will cause the intermediate cylinder to be worn through. In addition, high temperature will weaken the metal strength of the intermediate cylinder, significantly aggravating the wear effect of high-speed solid particles on the intermediate cylinder, making it easier to be worn through.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a ceramic fiber composite structure for the wear-resistant layer of a cyclone separator for power plant boilers, comprising: an inner lining disposed on the inner wall of the cylinder, wherein the inner lining comprises multiple assembled composite components;

[0006] The composite component includes a thermal insulation layer, on which a wear-resistant contact layer is provided. Both the thermal insulation layer and the wear-resistant contact layer are configured as annular structures. The inner and outer annular surfaces of the wear-resistant contact layer are provided with splicing grooves, and adjacent wear-resistant contact layers are assembled through the splicing grooves.

[0007] The first and second annular protective blocks are installed on the inner wall of the cylinder, and both the first and second annular protective blocks are assembled in contact with the composite component.

[0008] Furthermore, a conical tube is provided at the bottom of the cylinder, and a connecting cover is provided below the conical tube. A first connecting flange is provided at the bottom of the conical tube and the top of the connecting cover. A first connecting bolt is provided on the two first connecting flanges, and a first nut is provided at one end of the first connecting bolt. The two first connecting flanges are connected and fixed together by the first connecting bolt and the first nut. An ash hopper is provided below the connecting cover, and a second connecting flange is provided at the bottom of the connecting cover and the top of the ash hopper. A second connecting bolt is provided on the two second connecting flanges, and a second nut is provided at one end of the second connecting bolt. The two second connecting flanges are connected and fixed together by the second connecting bolt and the second nut.

[0009] Furthermore, a steel fiber reinforced heat insulation layer is provided on the inner wall of the cone.

[0010] Furthermore, a first adapter groove is provided on the first annular protective block, and a second adapter groove is provided on the second annular protective block. The first adapter groove is adapted to the thermal insulation layer and the wear-resistant contact layer, and the second adapter groove is adapted to the wear-resistant contact layer.

[0011] Furthermore, countersunk bolts are provided on the splicing groove of the inner annular surface of the thermal insulation layer, and a first threaded hole adapted to the countersunk bolts is provided on the thermal insulation layer. A first mounting bolt, a second mounting bolt, and a third mounting bolt are provided on the outer surface of the cylinder. A second threaded hole adapted to the first mounting bolt is provided on the thermal insulation layer. A third threaded hole adapted to the second mounting bolt is provided on the first annular protective block, and a fourth threaded hole adapted to the third mounting bolt is provided on the second annular protective block.

[0012] Furthermore, an air inlet pipe is provided on the cylinder.

[0013] Furthermore, a central air outlet pipe is provided at the center of the cylinder.

[0014] The beneficial effects of this utility model are as follows: by providing an inner lining composed of multiple composite parts on the inner wall of the cylinder, the wear-resistant contact layer resists solid particles in the high-temperature airflow, and the heat insulation layer isolates the high temperature, thus protecting the cylinder. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the wear-resistant ceramic fiber composite structure of the cyclone separator for power plant boilers according to this utility model.

[0016] Figure 2 This is a cross-sectional schematic diagram of the wear-resistant ceramic fiber composite structure of the cyclone separator for power plant boilers according to this utility model.

[0017] Figure 3 This is a utility model Figure 2 A magnified schematic diagram of the local structure A;

[0018] Figure 4 This is a utility model Figure 2 A magnified schematic diagram of the local structure B;

[0019] Figure 5 This is a partial structural schematic diagram of the ceramic fiber composite structure of the wear-resistant layer in the cyclone separator for power plant boilers of this utility model;

[0020] Figure 6 This is a partial cross-sectional schematic diagram of the wear-resistant ceramic fiber composite structure of the cyclone separator for power plant boilers according to this utility model.

[0021] The names corresponding to each mark in the diagram:

[0022] 1. Cylinder body; 2. Composite component; 21. Thermal insulation layer; 22. Wear-resistant contact layer; 221. Assembly groove; 3. First annular protective block; 31. First adapter groove; 4. Second annular protective block; 41. Second adapter groove; 5. Conical cylinder; 6. Connecting cover; 7. First connecting flange; 8. First connecting bolt; 9. First nut; 10. Ash hopper; 11. Second connecting flange; 12. Second connecting bolt; 13. Second nut; 14. Countersunk bolt; 15. First mounting bolt; 16. Second mounting bolt; 17. Third mounting bolt; 18. Air inlet pipe; 19. Central air outlet pipe. Detailed Implementation

[0023] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0024] Embodiments of this utility model:

[0025] like Figures 1-6 As shown, this utility model provides a wear-resistant ceramic fiber composite structure for a cyclone separator in a power plant boiler, including a first annular protective block 3 and a second annular protective block 4, as well as an inner lining disposed on the inner wall of the cylinder 1. The inner lining includes multiple assembled composite components 2. An air inlet pipe 18 is provided on the cylinder 1, through which a high-temperature airflow containing solid particles is introduced, which will directly contact the inner lining composed of multiple assembled composite components 2 for protection. A central air outlet pipe 19 is provided at the center of the cylinder 1, through which the airflow after particle separation is discharged.

[0026] Composite component 2 includes a thermal insulation layer 21 made of ceramic fiber. A wear-resistant contact layer 22 is provided on the thermal insulation layer 21. The wear-resistant contact layer 22 is made of corundum. Both the thermal insulation layer 21 and the wear-resistant contact layer 22 are set as annular structures. The inner and outer annular surfaces of the wear-resistant contact layer 22 are provided with splicing grooves 221. Adjacent wear-resistant contact layers 22 are assembled through the splicing grooves 221. The cross-section of the wear-resistant contact layer 22 is a Z-shaped structure. Through this setting, the gap between the wear-resistant contact layers 22 can be set as a multi-segment gap, forming a staggered stepped structure. The heat flow needs to turn multiple times, which can effectively block the heat flow.

[0027] The first annular protective block 3 and the second annular protective block 4 are disposed on the inner wall of the cylinder 1. Both the first annular protective block 3 and the second annular protective block 4 are in contact with the composite component 2 and assembled together. The first annular protective block 3 is provided with a first adapter groove 31, and the second annular protective block 4 is provided with a second adapter groove 41. The first adapter groove 31 is adapted to the thermal insulation layer 21 and the wear-resistant contact layer 22, and the second adapter groove 41 is adapted to the wear-resistant contact layer 22. Through this arrangement, the exposed thermal insulation layer 21 of the inner lining can be protected.

[0028] like Figures 1-6 As shown, a cone 5 is provided at the bottom of the cylinder 1. A steel fiber reinforced heat insulation layer is provided on the inner wall of the cone 5. A connecting cover 6 is provided below the cone 5. A first connecting flange 7 is provided at the bottom of the cone 5 and the top of the connecting cover 6. A first connecting bolt 8 is provided on the two first connecting flanges 7. A first nut 9 is provided at one end of the first connecting bolt 8. The two first connecting flanges 7 are connected and fixed together by the first connecting bolt 8 and the first nut 9. A ash hopper 10 is provided below the connecting cover 6. A second connecting flange 11 is provided at the bottom of the connecting cover 6 and the top of the ash hopper 10. A second connecting bolt 12 is provided on the two second connecting flanges 11. A second nut 13 is provided at one end of the second connecting bolt 12. The two second connecting flanges 11 are connected and fixed together by the second connecting bolt 12 and the second nut 13.

[0029] Countersunk bolts 14 are provided on the splicing groove 221 of the inner annular surface of the thermal insulation layer 21. A first screw hole adapted to the countersunk bolt 14 is opened on the thermal insulation layer 21. A first mounting bolt 15, a second mounting bolt 16, and a third mounting bolt 17 are provided on the outer surface of the cylinder 1. A second screw hole adapted to the first mounting bolt 15 is opened on the thermal insulation layer 21. A third screw hole adapted to the second mounting bolt 16 is opened on the first annular protective block 3. A fourth screw hole adapted to the third mounting bolt 17 is opened on the second annular protective block 4. With this arrangement, the structural components can be replaced according to actual needs.

Claims

1. A ceramic fiber composite structure for the wear-resistant layer of a cyclone separator in a power plant boiler, characterized in that, include: A liner is provided on the inner wall of the cylinder (1), the liner comprising a plurality of assembled composite parts (2); The composite component (2) includes a thermal insulation layer (21), on which a wear-resistant contact layer (22) is provided. Both the thermal insulation layer (21) and the wear-resistant contact layer (22) are configured as annular structures. The inner and outer annular surfaces of the wear-resistant contact layer (22) are provided with splicing grooves (221), and adjacent wear-resistant contact layers (22) are assembled through the splicing grooves (221). The first annular protective block (3) and the second annular protective block (4) are set on the inner wall of the cylinder (1). The first annular protective block (3) and the second annular protective block (4) are both assembled in contact with the composite component (2).

2. The ceramic fiber composite structure for the wear-resistant layer of a power plant boiler cyclone separator according to claim 1, characterized in that: The bottom of the cylinder (1) is provided with a cone (5), and a connecting cover (6) is provided below the cone (5). The bottom of the cone (5) and the top of the connecting cover (6) are both provided with first connecting flanges (7). The two first connecting flanges (7) are provided with first connecting bolts (8). One end of the first connecting bolts (8) is provided with a first nut (9). The two first connecting flanges (7) are connected and fixed together by the first connecting bolts (8) and the first nut (9). The bottom of the connecting cover (6) is provided with a ash hopper (10), and the bottom of the connecting cover (6) and the top of the ash hopper (10) are both provided with second connecting flanges (11). The two second connecting flanges (11) are provided with second connecting bolts (12). One end of the second connecting bolts (12) is provided with a second nut (13). The two second connecting flanges (11) are connected and fixed together by the second connecting bolts (12) and the second nut (13).

3. The ceramic fiber composite structure for the wear-resistant layer of a power plant boiler cyclone separator according to claim 2, characterized in that: A steel fiber reinforced heat insulation layer is provided on the inner wall of the cone (5).

4. The ceramic fiber composite structure for the wear-resistant layer of a power plant boiler cyclone separator according to claim 1, characterized in that: The first annular protective block (3) has a first adapter groove (31) and the second annular protective block (4) has a second adapter groove (41). The first adapter groove (31) is adapted to the thermal insulation layer (21) and the wear-resistant contact layer (22), and the second adapter groove (41) is adapted to the wear-resistant contact layer (22).

5. The ceramic fiber composite structure for the wear-resistant layer of a power plant boiler cyclone separator according to claim 1, characterized in that: Countersunk bolts (14) are provided on the splicing groove (221) of the inner annular surface of the thermal insulation layer (21). A first screw hole adapted to the countersunk bolt (14) is provided on the thermal insulation layer (21). A first mounting bolt (15), a second mounting bolt (16), and a third mounting bolt (17) are provided on the outer surface of the cylinder (1). A second screw hole adapted to the first mounting bolt (15) is provided on the thermal insulation layer (21). A third screw hole adapted to the second mounting bolt (16) is provided on the first annular protective block (3). A fourth screw hole adapted to the third mounting bolt (17) is provided on the second annular protective block (4).

6. The ceramic fiber composite structure for the wear-resistant layer of a power plant boiler cyclone separator according to claim 1, characterized in that: An air inlet pipe (18) is provided on the cylinder (1).

7. The ceramic fiber composite structure for the wear-resistant layer of a power plant boiler cyclone separator according to claim 1, characterized in that: A central air outlet pipe (19) is provided at the center of the cylinder (1).

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