Hanging pipe section anti-abrasion structure for pulverized coal fired boiler

Abstract

The utility model relates to the technical field of hanging pipes, in particular to a hanging pipe section anti-abrasion structure for a pulverized coal boiler, which comprises a first positioning pipe, a second positioning pipe, an extrusion plate, a protection plate, a hanging pipe main body, a fixing plate, a first extension rod and a second extension rod, and the second positioning pipe is arranged on one side of the first positioning pipe; when the hanging pipe main body penetrates through the first positioning pipe and the second positioning pipe, the horizontal position of the extrusion plate is adjusted, the extrusion plate drives the protection plate to move in the moving process, and the protection plate makes contact with the hanging pipe main body, so that the hanging pipe main bodies of different specifications are conveniently positioned, and the hanging pipe main bodies are prevented from shaking in the working process; friction of the pipe section of the hanging pipe body is reduced, the fixing plate can be connected through cooperation of the first extension rod and the second extension rod, and due to the fact that the fixing plate is connected with the first positioning pipe and the second positioning pipe, positioning of the bent position of the hanging pipe body can be achieved, and abrasion resistance of the pipe section of the hanging pipe body is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of hanging pipe technology, specifically to an anti-wear structure for hanging pipe sections used in pulverized coal boilers. Background Technology

[0002] After the fuel in the pulverized coal boiler is burned, it forms flue gas, which enters the tail flue through the turning chamber. This flue gas causes fly ash abrasion on the horizontal low-temperature heating surface tubes along the hanging tubes and the corner plates of the hanging tubes. In addition, the tail flue area is equipped with long telescopic soot blowers. If the soot blowing pressure is too high or the blowers are too close to the hanging tubes, they will cause damage to the hanging tubes and the horizontal low-temperature heating surface tubes near the hanging tubes. Therefore, it is necessary to install an anti-wear structure at this location.

[0003] Chinese Patent Publication No. CN219510771U discloses an anti-wear structure for the suspended pipes of a horizontal heating surface tube panel in a pulverized coal boiler, comprising: a cover plate, a long curved plate, and two long straight plates. The cover plate is fastened to the two serpentine pipes suspended by the suspended pipe, and is welded to an ear plate and a pipe clamp. The long curved plate is arranged along the direction of the suspended pipe, and its upper end is welded to the cover plate. The two long straight plates are inserted between the serpentine pipes on both sides and press against the long curved plate. Ribs are welded and installed between the two long straight plates. This patent solves the problem of wear caused by leakage in pipe sections at structural gaps due to traditional anti-wear plates laid on the suspended pipes and tube panel, which can improve unit safety, reduce maintenance investment for owners, and is easy to install.

[0004] However, the wear-resistant structure of the hanging tubes of the horizontal heating surface tube panel of this pulverized coal boiler is currently designed only for straight hanging tubes of specific specifications to achieve its positioning protection. However, when the specifications of the hanging tubes change or are damaged, the wear-resistant structure cannot continue to work effectively due to its lack of flexibility, which greatly limits its scope of application and practicality. Utility Model Content

[0005] To address the aforementioned issues, a wear-resistant structure for the suspended pipe section of a pulverized coal boiler is provided. By adjusting the horizontal position of the extrusion plate and the protective plate, the protective plate is brought into contact with the main body of the suspended pipe, facilitating the positioning of suspended pipe bodies of different specifications and preventing swaying during operation. This reduces friction in the main pipe section. A fixing plate can be connected via a first extension rod and a second extension rod. Since the fixing plate is connected to the first and second positioning pipes, positioning at the bends of the main pipe body can be achieved, enhancing the wear resistance of the main pipe section.

[0006] To address the existing technical problems, this utility model provides an anti-wear structure for a hanging pipe section of a pulverized coal boiler, comprising a first positioning pipe, a second positioning pipe, an extrusion plate, a protective plate, a hanging pipe body, a fixing plate, a first extension rod, and a second extension rod. The second positioning pipe is disposed on one side of the first positioning pipe, the extrusion plate is disposed inside the first and second positioning pipes, the protective plate is disposed on one side of the extrusion plate, the hanging pipe body is disposed on one side of the protective plate, the fixing plate is disposed on both sides of the first and second positioning pipes, the first extension rod is disposed at the bottom of the fixing plate, and the second extension rod is disposed at one end of the first extension rod.

[0007] Preferably, the surfaces of the first positioning tube and the second positioning tube that are close to each other are provided with anti-slip pads, and the first positioning tube and the second positioning tube are connected by positioning bolts, with the positioning bolts penetrating through the anti-slip pads.

[0008] Preferably, the first positioning tube has a threaded hole inside, and a lead screw passes through the threaded hole. The lead screw is connected to the extrusion plate through a working bearing.

[0009] Preferably, both the first positioning tube and the second positioning tube have symmetrically formed circular holes inside, and a guide rod connected to the extrusion plate is slidably installed inside the circular hole.

[0010] Preferably, the protective plate is made of high-strength polyester fiber material, and the thickness of the protective plate is between 0.2mm and 0.5mm.

[0011] Preferably, the end of the first extension rod away from the second extension rod is provided with a first connecting post, the end of the second extension rod away from the first extension rod is provided with a second connecting post, and the fixing plate is provided with connecting holes that can match the first connecting post and the second connecting post.

[0012] Preferably, a positioning rod is provided at one end of the first extension rod, and a U-shaped seat is provided at the bottom of the positioning rod. The U-shaped seat is connected to the second extension rod by an auxiliary screw.

[0013] The advantages of this utility model compared to the prior art are:

[0014] The first and second positioning tubes have the same structure, allowing them to be brought close together and positioned. When the main body of the hanging pipe passes through the first and second positioning tubes, the horizontal position of the extrusion plate is adjusted. During the movement of the extrusion plate, the protective plate moves and comes into contact with the main body of the hanging pipe, facilitating the positioning of hanging pipes of different specifications. This prevents the main body of the hanging pipe from shaking during operation, reduces friction in the main pipe section, and effectively protects the main pipe section. Furthermore, the first and second positioning tubes are detachable. Through the cooperation of the first and second extension rods, the fixing plate can be connected. Since the fixing plate is connected to the first and second positioning tubes, the positioning of the bending point of the main pipe can be achieved, enhancing the wear resistance of the main pipe section. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an anti-wear structure for hanging pipe sections used in pulverized coal boilers.

[0016] Figure 2 This is a schematic diagram of the back structure of a wear-resistant structure for a hanging pipe section used in a pulverized coal boiler.

[0017] Figure 3 This is a schematic diagram of the working structure of the first and second extension rods of an anti-wear structure for a hanging pipe section used in a pulverized coal boiler.

[0018] Figure 4 This is a schematic diagram of the installation structure of the first positioning pipe and the second positioning pipe of an anti-wear structure for a hanging pipe section of a pulverized coal boiler.

[0019] Figure 5 This is a partial cross-sectional view of the first positioning tube of an anti-wear structure for a hanging pipe section used in a pulverized coal boiler.

[0020] Figure 6 A wear-resistant structure for hanging pipe sections in pulverized coal boilers Figure 1 Enlarged structural diagram at point A in the middle.

[0021] The following are the labels in the diagram: 1. First positioning tube; 2. Second positioning tube; 3. Extrusion plate; 4. Protective plate; 5. Main body of the hanging pipe; 6. Fixing plate; 7. First extension rod; 8. Second extension rod; 9. Anti-slip pad; 10. Threaded hole; 11. Lead screw; 12. Guide rod; 13. Positioning rod; 14. U-shaped seat; 15. Auxiliary screw. Detailed Implementation

[0022] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0023] Please refer to the following: Figures 1 to 6 A wear-resistant structure for a hanging pipe section in a pulverized coal boiler includes a first positioning pipe 1, a second positioning pipe 2, an extrusion plate 3, a protective plate 4, a hanging pipe body 5, a fixing plate 6, a first extension rod 7, and a second extension rod 8. The second positioning pipe 2 is disposed on one side of the first positioning pipe 1. The extrusion plate 3 is disposed inside the first positioning pipe 1 and the second positioning pipe 2. The protective plate 4 is disposed on one side of the extrusion plate 3. The hanging pipe body 5 is disposed on one side of the protective plate 4. The fixing plate 6 is disposed on both sides of the first positioning pipe 1 and the second positioning pipe 2. The first extension rod 7 is disposed at the bottom of the fixing plate 6. The second extension rod 8 is disposed at one end of the first extension rod 7.

[0024] The first positioning tube 1 and the second positioning tube 2 have the same structure. They are brought close together and positioned. When the main body 5 of the hanging pipe passes through the first positioning tube 1 and the second positioning tube 2, the horizontal position of the extrusion plate 3 is adjusted. During the movement of the extrusion plate 3, the protective plate 4 moves and comes into contact with the main body 5 of the hanging pipe. This facilitates the positioning of hanging pipe bodies 5 of different specifications, prevents the main body 5 of the hanging pipe from shaking during operation, reduces the friction of the pipe sections of the main body 5, and thus effectively protects the pipe sections of the main body 5. The first positioning tube 1 and the second positioning tube 2 are detachable. The fixing plate 6 can be connected by the cooperation of the first extension rod 7 and the second extension rod 8. Since the fixing plate 6 is connected to the first positioning tube 1 and the second positioning tube 2, the positioning of the bending point of the main body 5 can be achieved, which enhances the wear resistance of the pipe sections of the main body 5.

[0025] like Figure 1 and Figure 4 As shown, anti-slip pads 9 are provided on the surfaces of the first positioning tube 1 and the second positioning tube 2 that are close to each other. The first positioning tube 1 and the second positioning tube 2 are connected by positioning bolts, and the positioning bolts pass through the anti-slip pads 9.

[0026] The anti-slip pad 9 is placed in the middle of the first positioning tube 1 and the second positioning tube 2, and connected to them under the action of the positioning bolt. During the connection process, the positioning bolt passes through the tube, which can make the first positioning tube 1 and the second positioning tube 2 more stable.

[0027] like Figure 4 and Figure 5 As shown, the first positioning tube 1 has a threaded hole 10 inside, and a lead screw 11 passes through the threaded hole 10. The lead screw 11 is connected to the extrusion plate 3 through a working bearing.

[0028] Manually rotate the lead screw 11 to make the lead screw 11 threaded into the threaded hole 10. At the same time, the lead screw 11 is connected to the extrusion plate 3 under the action of the working bearing, which can realize the kinetic energy supply of the extrusion plate 3.

[0029] like Figure 5 As shown, the first positioning tube 1 and the second positioning tube 2 are symmetrically provided with circular holes inside, and a guide rod 12 connected to the extrusion plate 3 is slidably installed inside the circular hole.

[0030] When the extrusion plate 3 moves, it drives the guide rod 12 to move. The guide rod 12 is limited by the round holes inside the first positioning tube 1 and the second positioning tube 2, which can realize the horizontal adjustment of the extrusion plate 3 and facilitate the positioning of the hanging pipe body 5 of different specifications.

[0031] like Figure 5 As shown, the protective plate 4 is made of high-strength polyester fiber material, and the thickness of the protective plate 4 is between 0.2mm and 0.5mm.

[0032] The protective plate 4 is in contact with the main body 5 of the lifting pipe. The protective plate 4 is made of high-strength polyester fiber material. The protective plate 4 has excellent wear resistance, tear resistance and corrosion resistance. It also has good elasticity and can maintain good shape stability during the lifting process.

[0033] like Figure 4 As shown, the first extension rod 7 has a first connecting post at the end away from the second extension rod 8, and the second extension rod 8 has a second connecting post at the end away from the first extension rod 7. The fixing plate 6 has connecting holes that can match the first connecting post and the second connecting post.

[0034] The fixing plate 6 is connected to the first positioning tube 1 and the second positioning tube 2. When positioning the bent pipe, the first connecting post at one end of the first extension rod 7 is connected to the threaded hole inside the fixing plate 6, and the second connecting post at one end of the second extension rod 8 is connected to the threaded hole inside the fixing plate 6 at the bend, so as to facilitate the user to assemble and disassemble the first extension rod 7 and the second extension rod 8.

[0035] like Figure 6 As shown, a positioning rod 13 is provided at one end of the first extension rod 7, and a U-shaped seat 14 is provided at the bottom of the positioning rod 13. The U-shaped seat 14 is connected to the second extension rod 8 by an auxiliary screw 15.

[0036] The first extension rod 7 is connected to the positioning rod 13, and the positioning rod 13 is connected to the U-shaped seat 14. The second extension rod 8 is inserted into the U-shaped seat 14, and the auxiliary screw 15 passes through the second extension rod 8 and the U-shaped seat 14, so that the user can control the rotation angle of the first extension rod 7 and the second extension rod 8.

[0037] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A kind of anti-abrasion structure for the pipe section of suspension tube of pulverized coal boiler, it is characterized in that, The utility model provides an improved and improved hanging pipe, including first positioning pipe (1), second positioning pipe (2), extrusion plate (3), guard board (4), pipe body (5), fixed plate (6), first extension rod (7) and second extension rod (8), second positioning pipe (2) sets up at one side of first positioning pipe (1), extrusion plate (3) sets up inside first positioning pipe (1) with second positioning pipe (2), guard board (4) sets up at one side of extrusion plate (3), pipe body (5) sets up at one side of guard board (4), fixed plate (6) sets up at both sides of first positioning pipe (1) and second positioning pipe (2), first extension rod (7) sets up at the bottom of fixed plate (6), second extension rod (8) sets up at one end of first extension rod (7).

2. The anti-abrasion structure of a hanging pipe section of a pulverized coal boiler according to claim 1, characterized in that: The mutually close surface of the first positioning pipe (1) and the second positioning pipe (2) is provided with an anti-skid washer (9), the first positioning pipe (1) and the second positioning pipe (2) are connected by positioning bolts, and the positioning bolts penetrate the anti-skid washer (9).

3. The structure for preventing abrasion of a hanging pipe section of a pulverized coal boiler according to claim 1, characterized in that: The first positioning pipe (1) is internally provided with a screw hole (10), the screw hole (10) is internally threaded with a lead screw (11), and the lead screw (11) and the extrusion plate (3) are connected by a working bearing.

4. The structure for preventing abrasion of a hanging pipe section of a pulverized coal boiler according to claim 3, characterized in that: The first positioning pipe (1) and the second positioning pipe (2) are symmetrically internally provided with a circular hole, and the circular hole is internally slidably provided with a guide rod (12) connected with the extrusion plate (3).

5. The structure for preventing abrasion of a hanging pipe section of a pulverized coal boiler according to claim 1, characterized in that: The guard board (4) is made of high-strength polyester fiber material, and the thickness of the guard board (4) is between 0.2mm and 0.5mm.

6. The structure for preventing abrasion of a hanging pipe section of a pulverized coal boiler according to claim 1, characterized in that: The first extension rod (7) is provided with a first connecting column at one end away from the second extension rod (8), the second extension rod (8) is provided with a second connecting column at one end away from the first extension rod (7), and the fixed plate (6) is provided with a connecting hole matched with the first connecting column and the second connecting column.

7. The structure for preventing abrasion of a hanging pipe section of a pulverized coal boiler according to claim 1, characterized in that: One end of the first extension rod (7) is provided with a positioning rod (13), the bottom of the positioning rod (13) is provided with a U-shaped seat (14), and the U-shaped seat (14) and the second extension rod (8) are connected by an auxiliary screw (15).

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