A heat surface anti-abrasion protection device for a circulating fluidized bed boiler
Patent Information
- Application Number
- CN202522519803.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-11-27
AI Technical Summary
[0004]为了克服上述缺陷，本实用新型提供了一种用于循环流化床锅炉的受热面防磨防护装置，解决了在实际的使用过程中，由于安装了水平与竖直格栅板会对循环流化床锅炉内部的水冷管造成一定阻碍，导致水冷管的拆卸与安装较为困难，从而不便对水冷管进行维护与更换的问题
1、该用于循环流化床锅炉的受热面防磨防护装置，通过设置水平格栅板、第二竖直格栅板、限位孔、限位柱、斜面板、圆柱、螺杆与拉簧，当需要将水冷管进行拆卸时，转动旋钮带动螺杆转动，由于螺杆螺纹连接在盒体上，因此当螺杆转动的同时会进行移动，螺杆会带动移动板与斜面板往靠近圆柱的方向进行移动，斜面板会对圆柱进行挤压，从而使得两个圆柱相互靠近，圆柱会带动连接条、活动板与限位柱进行移动，活动板会将拉簧拉伸，且限位柱会脱离限位孔的内部从而解除第二竖直格栅板的固定状态，此时即可将水平格栅板旋转打开解除水冷管的固定状态，即可将水冷管进行拆卸；当需要安装水冷管时，将水冷管放置在弧面槽的内部，并将水平格栅板旋转关闭使得水冷管位于弧形槽的内部，此时反向转动旋钮带动螺杆转动，螺杆会带动移动板与斜面板往远离圆柱的方向进行移动，从而使得拉簧复位并拉动活动板运动，活动板会带动限位柱运动并使得两个限位柱相互远离，当限位柱插接至限位孔内部即可对第二竖直格栅板、水平格栅板与水冷管进行固定，完成水冷管的安装工作，该装置采用了可旋转打开的格栅板，从而能够避免格栅板对水冷管造成阻碍，便于对水冷管进行拆卸与安装，从而便于对水冷管进行维护与更换；
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Figure CN224872448U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of circulating fluidized bed boilers, specifically a wear-resistant protective device for the heating surface of a circulating fluidized bed boiler. Background Technology
[0002] For a long time, the wear of the heating surfaces inside circulating fluidized bed boilers has been a problem that has plagued many users. Leaks and tube ruptures of boiler heating surfaces occur frequently. Traditional passive anti-wear measures can only alleviate but not eliminate wear. Because a large amount of material (including waste rock) participates in the circulation when the boiler is working, the high-speed flowing material (including waste rock) particles constantly scour the heating surfaces, causing severe wear. This results in different wear conditions in different areas inside the furnace, and may even cause tube ruptures and leaks.
[0003] The currently used thermally conductive grid anti-wear technology is an active anti-wear technology. It involves installing alloy plates along the horizontal and vertical directions on the heated surfaces of the water-cooled tubes inside the furnace, forming a mesh grid. After installation, the grid plates can block the formation of high-speed material adhering to the wall, optimize the surface flow field of the heated surface, eliminate local eddies, reduce the velocity of the gas-solid two-phase flow adhering to the wall, and reduce the cutting force of material particles (including waste rock) on the heated surface, thereby effectively controlling wear and leakage of the heated surface. However, in actual use, the installation of horizontal and vertical grid plates can obstruct the water-cooled tubes inside the circulating fluidized bed boiler, making disassembly and installation of the water-cooled tubes difficult, thus hindering maintenance and replacement. Utility Model Content
[0004] To overcome the above-mentioned defects, this utility model provides a wear-resistant protection device for the heating surface of a circulating fluidized bed boiler. It solves the problem that in actual use, the installation of horizontal and vertical grid plates will obstruct the water-cooled pipes inside the circulating fluidized bed boiler, making it difficult to disassemble and install the water-cooled pipes, and thus inconvenient to maintain and replace them.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant and protective device for the heating surface of a circulating fluidized bed boiler, comprising a base plate, a box body fixedly connected to one side of the base plate, a screw threadedly connected to the box body, a movable plate rotatably connected to one end of the screw, two inclined plates fixedly connected to the movable plate, two second telescopic rods fixedly connected to the top and bottom of the inner wall of the box body, a movable plate fixedly connected to one end of the two second telescopic rods, a tension spring sleeved on the second telescopic rods, and a connecting strip fixedly connected to the movable plate; A cylinder is fixedly connected to the connecting strip, a limiting post is fixedly connected to the movable plate, a first vertical grid plate is hinged to the base plate, three horizontal grid plates are fixedly connected to one side of the first vertical grid plate, a second vertical grid plate is fixedly connected to one end of the three horizontal grid plates, two limiting plates are fixedly connected to one side of the second vertical grid plate, limiting holes are opened on the limiting plates, and several arc grooves are opened on the base plate, with water cooling pipes installed inside the arc grooves.
[0006] As a further embodiment of this utility model: one end of the tension spring is fixedly connected to the inside of the box, and the other end of the tension spring is fixedly connected to the movable plate.
[0007] As a further embodiment of this utility model: the limiting post penetrates the box body and extends to the outside of the box body, and a knob is fixedly connected to the end of the screw away from the moving plate.
[0008] As a further embodiment of this utility model: a plurality of arc-shaped grooves are provided on the horizontal grid plate, and the water-cooling pipe is located inside the arc-shaped grooves.
[0009] As a further embodiment of this utility model: two first telescopic rods are fixedly connected to the movable plate, and the end of the first telescopic rod away from the movable plate is fixedly connected to the inner wall of the box.
[0010] As a further embodiment of this utility model: the movable plate is located inside the box body, and the cylinder is in contact with the inclined panel.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This anti-wear protection device for the heating surface of a circulating fluidized bed boiler consists of a horizontal grating plate, a second vertical grating plate, limiting holes, limiting posts, inclined plates, cylinders, screws, and tension springs. When the water-cooled pipes need to be disassembled, turning the knob drives the screw to rotate. Since the screw is threaded onto the housing, it moves as it rotates. The screw drives the moving plate and inclined plate to move closer to the cylinder. The inclined plate presses against the cylinder, causing the two cylinders to move closer together. The cylinder then moves the connecting strip, the movable plate, and the limiting posts. The movable plate stretches the tension spring, and the limiting posts disengage from the limiting holes, releasing the second vertical grating plate from its fixed state. At this point, the horizontal grating plate can be rotated open to release the water-cooled pipes from their fixed state. The water-cooling pipe can be disassembled. When the water-cooling pipe needs to be installed, place it inside the arc groove and rotate the horizontal grid plate to close it so that the water-cooling pipe is inside the arc groove. At this time, rotate the knob in the opposite direction to drive the screw to rotate. The screw will drive the moving plate and the inclined plate to move away from the cylinder, thereby causing the tension spring to reset and pull the movable plate to move. The movable plate will drive the limit post to move and make the two limit posts move away from each other. When the limit post is inserted into the limit hole, the second vertical grid plate, the horizontal grid plate and the water-cooling pipe can be fixed, and the installation of the water-cooling pipe is completed. The device uses a rotatable grid plate, which can avoid the grid plate from obstructing the water-cooling pipe, making it easy to disassemble and install the water-cooling pipe, and thus making it easy to maintain and replace the water-cooling pipe. 2. This anti-wear protection device for the heating surface of a circulating fluidized bed boiler, consisting of an inclined plate, a screw, a cylinder, and a limiting post, allows for easy disassembly of the water-cooled pipes. When the water-cooled pipes need to be disassembled, rotating the knob drives the screw to rotate. Since the screw is threaded onto the housing, it moves as it rotates, causing the moving plate and inclined plate to move closer to the cylinder. The inclined plate then presses against the cylinder, bringing the two cylinders closer together. The cylinder then moves the connecting strip, the movable plate, and the limiting post. The movable plate stretches the tension spring, and the limiting post disengages from the limiting hole, releasing the second vertical grid plate from its fixed position. At this point, the horizontal grid plate can be rotated open to release the water-cooled pipes from their fixed position, allowing for disassembly. The device allows the two limiting posts to move synchronously and approach each other by rotating the knob, enabling them to disengage from the limiting hole simultaneously, thus facilitating the disassembly of the water-cooled pipes. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the open structure of the horizontal grating plate of this utility model; Figure 3 This is a structural schematic diagram of the cross-section of the box body of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram at point A; In the diagram: 1. Base plate; 2. First vertical grid plate; 3. Water cooling pipe; 4. Box body; 5. Arc groove; 6. Horizontal grid plate; 7. Arc groove; 8. Second vertical grid plate; 9. Limiting plate; 10. Limiting hole; 11. Screw; 12. Knob; 13. Moving plate; 14. First telescopic rod; 15. Slanted panel; 16. Limiting post; 17. Movable plate; 18. Second telescopic rod; 19. Tension spring; 20. Connecting strip; 21. Cylinder. Detailed Implementation
[0013] The technical solution of this patent will be further described in detail below with reference to specific embodiments.
[0014] like Figure 1-4 As shown, this utility model provides a technical solution: a wear-resistant protective device for the heating surface of a circulating fluidized bed boiler, including a base plate 1, a box 4 fixedly connected to one side of the base plate 1, a screw 11 threadedly connected to the box 4, a movable plate 13 rotatably connected to one end of the screw 11, two inclined plates 15 fixedly connected to the movable plate 13, the inclined surface design of the inclined plates 15 has a guiding function, which facilitates the inclined plates 15 to squeeze and push the cylinder 21, ensuring the normal operation of subsequent work, one end of the tension spring 19 is fixedly connected to the inside of the box 4, and the other end of the tension spring 19 is fixedly connected to the movable plate 17.
[0015] Two second telescopic rods 18 are fixedly connected to the top and bottom of the inner wall of the box body 4. A movable plate 17 is fixedly connected to one end of each second telescopic rod 18. A tension spring 19 is sleeved on the second telescopic rod 18. When the tension spring 19 is reset, it can pull the movable plate 17 to move. The movable plate 17 will drive the limiting post 16 to move and make the limiting post 16 insert into the limiting hole 10 to fix the second vertical grid plate 8, the horizontal grid plate 6 and the water cooling pipe 3, thereby facilitating the installation of the water cooling pipe 3. A connecting strip 20 is fixedly connected to the movable plate 17. A cylinder 21 is fixedly connected to the connecting strip 20. A limiting post 16 is fixedly connected to the movable plate 17. The limiting post 16 passes through the box body 4 and extends to the outside of the box body 4. A knob 12 is fixedly connected to the end of the screw 11 away from the moving plate 13. Because of the knob 12, the screw 11 can be easily rotated by rotating the knob 12, thereby improving the ease of operation.
[0016] A first vertical grid plate 2 is hinged to the base plate 1. Three horizontal grid plates 6 are fixedly connected to one side of the first vertical grid plate 2. A second vertical grid plate 8 is fixedly connected to one end of the three horizontal grid plates 6. Two limiting plates 9 are fixedly connected to one side of the second vertical grid plate 8. Limiting holes 10 are opened on the limiting plates 9. Several arc-shaped grooves 7 are opened on the horizontal grid plates 6. The water cooling pipe 3 is located inside the arc-shaped grooves 7.
[0017] Several arc-shaped grooves 5 are provided on the base plate 1. Water cooling pipes 3 are installed inside the arc-shaped grooves 5. Two first telescopic rods 14 are fixedly connected to the movable plate 13. Because of the first telescopic rods 14, when the movable plate 13 moves, the first telescopic rods 14 can support and limit the movable plate 13, thereby improving the stability of the movable plate 13. The end of the first telescopic rod 14 away from the movable plate 13 is fixedly connected to the inner wall of the box body 4. The movable plate 13 is located inside the box body 4, and the cylinder 21 is in contact with the inclined plate 15.
[0018] The working principle of this utility model is as follows: When it is necessary to disassemble the water-cooling pipe 3, turn the knob 12 to drive the screw 11 to rotate. Since the screw 11 is threadedly connected to the box 4, it will move while rotating. The screw 11 will drive the moving plate 13 and the inclined plate 15 to move closer to the cylinder 21. The inclined plate 15 will squeeze the cylinder 21, so that the two cylinders 21 will move closer to each other. The cylinder 21 will drive the connecting strip 20, the movable plate 17 and the limiting post 16 to move. The movable plate 17 will stretch the tension spring 19, and the limiting post 16 will disengage from the inside of the limiting hole 10, thereby releasing the fixed state of the second vertical grid plate 8. At this time, the horizontal grid plate 6 can be rotated open to release the fixed state of the water-cooling pipe 3, and the water-cooling pipe 3 can be disassembled. When water-cooling pipe 3 needs to be installed, place water-cooling pipe 3 inside the arc groove 5, and rotate the horizontal grid plate 6 to close it so that water-cooling pipe 3 is located inside the arc groove 7. At this time, rotate the knob 12 in the opposite direction to drive the screw 11 to rotate. The screw 11 will drive the moving plate 13 and the inclined plate 15 to move away from the cylinder 21, so that the tension spring 19 will be reset and pull the movable plate 17 to move. The movable plate 17 will drive the limiting post 16 to move and make the two limiting posts 16 move away from each other. When the limiting post 16 is inserted into the limiting hole 10, the second vertical grid plate 8, the horizontal grid plate 6 and the water-cooling pipe 3 can be fixed, and the installation of water-cooling pipe 3 is completed.
[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0020] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.
Claims
1. A wear-resistant protective device for the heating surface of a circulating fluidized bed boiler, comprising a base plate (1), characterized in that: A box body (4) is fixedly connected to one side of the base plate (1). A screw rod (11) is threaded onto the box body (4). A movable plate (13) is rotatably connected to one end of the screw rod (11). Two inclined plates (15) are fixedly connected to the movable plate (13). Two second telescopic rods (18) are fixedly connected to the top and bottom of the inner wall of the box body (4). A movable plate (17) is fixedly connected to one end of the two second telescopic rods (18). A tension spring (19) is sleeved on the second telescopic rod (18). A connecting strip (20) is fixedly connected to the movable plate (17). A cylinder (21) is fixedly connected to the connecting strip (20), a limiting post (16) is fixedly connected to the movable plate (17), a first vertical grid plate (2) is hinged to the base plate (1), three horizontal grid plates (6) are fixedly connected to one side of the first vertical grid plate (2), a second vertical grid plate (8) is fixedly connected to one end of the three horizontal grid plates (6), two limiting plates (9) are fixedly connected to one side of the second vertical grid plate (8), a limiting hole (10) is opened on the limiting plate (9), and several arc grooves (5) are opened on the base plate (1), and water cooling pipes (3) are installed inside the arc grooves (5).
2. The anti-wear protection device for the heating surface of a circulating fluidized bed boiler according to claim 1, characterized in that: One end of the tension spring (19) is fixedly connected to the inside of the box (4), and the other end of the tension spring (19) is fixedly connected to the movable plate (17).
3. The anti-wear protection device for the heating surface of a circulating fluidized bed boiler according to claim 1, characterized in that: The limiting post (16) penetrates the box (4) and extends to the outside of the box (4), and a knob (12) is fixedly connected to the end of the screw (11) away from the moving plate (13).
4. The anti-wear protection device for the heating surface of a circulating fluidized bed boiler according to claim 1, characterized in that: The horizontal grid plate (6) has several arc-shaped grooves (7), and the water-cooling pipe (3) is located inside the arc-shaped grooves (7).
5. The anti-wear protection device for the heating surface of a circulating fluidized bed boiler according to claim 1, characterized in that: Two first telescopic rods (14) are fixedly connected to the movable plate (13), and the end of the first telescopic rod (14) away from the movable plate (13) is fixedly connected to the inner wall of the box (4).
6. The anti-wear protection device for the heating surface of a circulating fluidized bed boiler according to claim 1, characterized in that: The movable plate (13) is located inside the box (4), and the cylinder (21) is in contact with the inclined plate (15).