Abrasion-proof beam for water cooling wall of boiler

Abstract

The utility model discloses a boiler water cooling wall anti-abrasion beam which comprises an anti-abrasion beam body, first-level anti-abrasion lining plates are evenly arranged on the anti-abrasion beam body, a second-level step type dredging assembly is installed on one side of each first-level anti-abrasion lining plate, and arc-shaped guide plates are evenly arranged on the second-level step type dredging assembly. According to the utility model, the structure of the device is optimized, and when the device is used, on one hand, the two-stage stepped dredging assembly is additionally arranged on the first-stage anti-abrasion lining plate, and the wall-attached materials are blocked layer by layer to reduce the speed through the stepped structural design formed by arranging the arc-shaped guide plates and are dredged to the inner side of the boiler to continue to participate in internal circulation; and on the other hand, airflow in the horizontal direction in the furnace and vortex generated by ash powder push a hollow rotating disc provided with anti-fan blades in the three-stage energy consumption base to rotate, the combination of a guide structure and an energy consumption structure is beneficial to reducing erosive wear of fly ash and particulate matter to the water cooling wall, and the anti-wear protection performance is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of boiler water-cooled wall structure, specifically to a boiler water-cooled wall anti-wear beam. Background Technology

[0002] Boiler water-cooled walls are an important component of boilers. They are mainly composed of densely packed tubes arranged around the furnace. They play a crucial role in heat absorption, furnace wall protection, and maintaining safe operation. Wear-resistant beams are often installed in the easily worn areas of the boiler water-cooled walls. These areas include the lower part of the furnace, the burner area, the flue gas turning area, the gaps between the water-cooled wall tubes, and high-temperature areas. The purpose of installing wear-resistant beams is to reduce the erosion and wear of the water-cooled walls by fly ash and particulate matter, extend the service life of the water-cooled walls, and ensure the safe and stable operation of the boiler.

[0003] As disclosed in application number 201820656456.7, a boiler water-cooled wall anti-wear beam structure includes at least one anti-wear beam, each anti-wear beam being independently arranged on the inner side wall of the boiler water-cooled wall. Each anti-wear beam includes a contact portion and a support portion integrally formed with the contact portion. The first side of the contact portion is fixedly connected to the inner side wall of the boiler water-cooled wall, and the second side of the contact portion is integrally formed with the support portion. This boiler water-cooled wall anti-wear beam structure effectively slows down the descent speed of coal ash particles, allowing some coal ash particles to temporarily stop descending along the water-cooled wall tube, concentrating wear control at the upper opening of the anti-wear beam and reducing the degree of wear on the boiler water-cooled wall. However, it still suffers from a single anti-wear protection structure, unable to cope with damage caused by fly ash and airflow impact. The pressure-resistant buffering effect of the boiler water-cooled wall anti-wear beam is poor, affecting its service life. Based on this, we propose a novel boiler water-cooled wall anti-wear beam. Utility Model Content

[0004] The purpose of this utility model is to provide a wear-resistant beam for boiler water-cooled walls to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a boiler water-cooled wall anti-wear beam, comprising an anti-wear beam body, on which a primary anti-wear liner is uniformly arranged; a secondary stepped guide assembly is installed on one side of the primary anti-wear liner; an arc-shaped guide plate is uniformly arranged on the secondary stepped guide assembly; an assembly plate is screwed between the arc-shaped guide plate and the primary anti-wear liner; damper cylinders are fixed at both ends of the bottom of the assembly plate; a piston body is slidably connected inside the damper cylinder; energy dissipation holes are uniformly arranged on the piston body; a piston rod is connected to the output end of the damper cylinder; a rubber composite spring is connected between the piston rod and the arc-shaped guide plate; a tertiary energy dissipation seat is welded to the bottom of the assembly plate; a hollow turntable is rotatably connected inside the tertiary energy dissipation seat; and anti-fan blades are uniformly fixed inside the hollow turntable.

[0006] Preferably, the primary wear-resistant liner has an alumina copper welding layer on the side away from the secondary stepped guide component, which improves the robustness of the primary wear-resistant liner during the welding and assembly of the boiler water-cooled wall.

[0007] Preferably, the arc-shaped guide plates are arranged in a stepped manner in the vertical direction of the two-stage stepped diversion assembly.

[0008] Preferably, the damper cylinders are symmetrically distributed at both ends of the assembly plate.

[0009] Preferably, the outer wall of the hollow turntable is uniformly welded with guide sliders, and the interior of the three-stage energy-consuming base is provided with an annular guide cavity that is slidably connected to the guide sliders.

[0010] Preferably, the guide slider is movably connected with balls that contact the inner wall of the annular guide cavity, thereby reducing the frictional resistance during the movement of the guide slider.

[0011] Preferably, the material of the primary wear-resistant liner is a rare earth wear-resistant alloy plate.

[0012] Preferably, the outer walls of the arc-shaped guide vane and the fan blades are coated with a tungsten carbide coating, which optimizes the wear resistance of the arc-shaped guide vane and the fan blades.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) The water-cooled wall anti-wear beam of the boiler is equipped with a two-stage stepped guide component, which optimizes the structure of the water-cooled wall anti-wear beam. On the one hand, the two-stage stepped guide component installed on the first-stage anti-wear liner, through the stepped structure design of the arc-shaped guide plate, blocks and slows down the wall-adhering material layer by layer, and guides it to the inside of the boiler to continue to participate in the internal circulation. On the other hand, the horizontal airflow in the furnace and the vortex generated by the ash powder drive the hollow turntable with anti-fan blades inside the third-stage energy-consuming seat to rotate. The combination of this guide structure and energy-consuming structure is conducive to reducing the scouring and wear of fly ash and particulate matter on the water-cooled wall and improving the anti-wear protection performance. Furthermore, by combining the passive anti-wear structure formed by the first-stage anti-wear liner and the active guide energy-consuming anti-wear structure composed of the second-stage stepped guide component and the third-stage energy-consuming seat on the water-cooled wall anti-wear beam structure, it is conducive to achieving efficient and comprehensive wear protection.

[0015] (2) The anti-wear beam of the water-cooled wall of the boiler is equipped with damper cylinders, which optimizes the performance of the anti-wear beam structure. The arc-shaped guide plate can guide the flow of flue gas and fly ash, avoid the fly ash from concentrating on a certain area, and its arc-shaped appearance design can reduce the direct impact of fly ash and particulate matter, disperse the flue gas flow direction, and reduce local wear. Furthermore, by adding a damper cylinder, piston body and rubber composite spring to the arc-shaped guide plate to form a buffer structure, the impact force loss can be reduced. Specifically, when fly ash applies impact and vibration force, the piston rod will compress the rubber composite spring and push the piston body to move inside the damper cylinder, pushing the viscous fluid through the energy dissipation hole on the piston body. Since the fluid has high viscosity, the flow of the fluid will be subject to the resistance caused by friction. At this time, the vibration kinetic energy is converted into heat energy through viscous resistance and dissipated. Then, the damping force is generated by the viscous characteristics of the fluid to assist in energy dissipation and buffer protection. This is beneficial to improve the impact resistance of the arc-shaped guide plate and prevent it from deforming or falling off due to flue gas impact. Attached Figure Description

[0016] Figure 1 This is a top view sectional structural diagram of the present invention;

[0017] Figure 2 This is a side view of the first-level wear-resistant liner of this utility model.

[0018] Figure 3 This is a front view cross-sectional structural diagram of the three-stage energy-consuming base of this utility model;

[0019] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0020] Figure 5 This is a partial cross-sectional view of the damper cylinder of this utility model.

[0021] In the diagram: 1. Primary wear-resistant liner; 2. Secondary stepped guide assembly; 3. Arc-shaped guide plate; 4. Tertiary energy-consuming seat; 5. Assembly plate; 6. Annular guide cavity; 7. Hollow turntable; 8. Guide slider; 9. Ball bearing; 10. Anti-fan blade; 11. Piston rod; 12. Rubber composite spring; 13. Damper cylinder; 14. Piston body; 15. Energy-consuming hole; 16. Wear-resistant beam body. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] Please see Figure 1-5 An embodiment of this utility model is provided: a boiler water-cooled wall anti-wear beam, including an anti-wear beam body 16, a primary anti-wear liner 1 uniformly arranged on the anti-wear beam body 16, and a secondary stepped guide component 2 installed on one side of the primary anti-wear liner 1.

[0024] In use, the wear-resistant beam body 16 is set as a ring structure assembled from the first-level wear-resistant liner 1, and the first-level wear-resistant liner 1 is then evenly welded to the wear-prone areas of the boiler water-cooled wall. This split structure makes it easy to flexibly adjust the wear-resistant area according to the needs of the wear-prone areas, thus improving its applicability.

[0025] The secondary stepped diversion component 2 is uniformly provided with arc-shaped guide plates 3, and an assembly plate 5 is installed between the arc-shaped guide plates 3 and the primary wear-resistant liner 1 by screws;

[0026] Both ends of the bottom of the assembly plate 5 are fixed with damper cylinders 13. The inside of the damper cylinder 13 is slidably connected to a piston body 14. Energy dissipation holes 15 are evenly arranged on the piston body 14. The output end of the damper cylinder 13 is connected to a piston rod 11. A rubber composite spring 12 is connected between the piston rod 11 and the arc-shaped guide plate 3.

[0027] In use, the arc-shaped guide plate 3 can guide the flow of flue gas and fly ash, preventing fly ash from concentrating and scouring a certain area. Its arc-shaped appearance design can reduce the direct impact of fly ash and particulate matter, disperse the flow direction of flue gas, and reduce local wear. Furthermore, by adding a damper cylinder 13, piston body 14, and rubber composite spring 12 to the arc-shaped guide plate 3 to form a buffer structure, the impact force loss can be reduced. Specifically, when fly ash applies impact or vibration force, the piston rod 11 will compress the rubber composite spring 12 and push the piston body 14 to move inside the damper cylinder 13, pushing the viscous fluid through the energy dissipation hole 15 on the piston body 14. Since the fluid has high viscosity, the flow of the fluid will be subject to resistance caused by friction. At this time, the vibration kinetic energy is converted into heat energy through viscous resistance and dissipated. In turn, the damping force is generated by the viscous characteristics of the fluid to assist in energy dissipation and buffer protection. This is beneficial to improve the impact resistance of the arc-shaped guide plate 3 and prevent deformation or detachment due to flue gas impact.

[0028] The bottom of the assembly plate 5 is welded with a three-stage energy-consuming base 4. The interior of the three-stage energy-consuming base 4 is rotatably connected to a hollow turntable 7. The interior of the hollow turntable 7 is uniformly fixed with anti-fan blades 10.

[0029] In use, on the one hand, the secondary stepped guide component 2 installed on the primary wear-resistant liner 1, through the stepped structure design formed by the arc-shaped guide plates 3, blocks and slows down the wall-adhering material layer by layer, and guides it to the inside of the boiler to continue to participate in the internal circulation. On the other hand, the horizontal airflow in the furnace and the vortex generated by the ash powder drive the hollow turntable 7 with anti-fan blades 10 arranged inside the tertiary energy-consuming seat 4 to rotate. The combination of this guide structure and energy-consuming structure helps to reduce the scouring and wear of fly ash and particulate matter on the water-cooled wall and improve the wear-resistant protection performance.

[0030] An alumina copper welding layer is provided on the side of the primary wear-resistant liner 1 away from the secondary stepped drainage component 2, which improves the robustness of the primary wear-resistant liner 1 during the welding and assembly of the boiler water-cooled wall.

[0031] The arc-shaped guide plate 3 is arranged in a stepped manner in the vertical direction of the secondary stepped diversion component 2;

[0032] The damper cylinders 13 are symmetrically distributed at both ends of the assembly plate 5;

[0033] The outer wall of the hollow turntable 7 is uniformly welded with guide sliders 8, and the interior of the three-stage energy-consuming base 4 is provided with an annular guide slide cavity 6 that is slidably connected to the guide sliders 8.

[0034] The guide slider 8 is uniformly connected with balls 9 that are in contact with the inner wall of the annular guide slide cavity 6, which reduces the frictional resistance when the guide slider 8 moves.

[0035] The material of the first-level wear-resistant liner 1 is a rare earth wear-resistant alloy plate;

[0036] The outer walls of the arc-shaped guide vane 3 and the fan blade 10 are coated with tungsten carbide, which optimizes the wear resistance of the arc-shaped guide vane 3 and the fan blade 10.

[0037] In this embodiment, during use: First, the secondary stepped guide component 2 installed on the primary wear-resistant liner 1, through the stepped structure design formed by the arc-shaped guide plates 3, blocks and slows down the wall-adhering material layer by layer, and guides it to the inside of the boiler to continue participating in the internal circulation. Second, the horizontal airflow in the furnace and the vortex generated by the ash powder drive the hollow turntable 7 with anti-fan blades 10 arranged inside the tertiary energy-consuming seat 4 to rotate. The combination of this guide structure and energy-consuming structure helps to reduce the scouring and wear of fly ash and particulate matter on the water-cooled wall and improve the wear-resistant protection performance. Furthermore, by combining the passive wear-resistant structure formed by the primary wear-resistant liner 1 and the active guide energy-consuming wear-resistant structure formed by the secondary stepped guide component 2 and the tertiary energy-consuming seat 4 on the water-cooled wall wear-resistant beam structure, it is beneficial to achieve efficient and comprehensive wear-resistant protection. The arc-shaped guide plates 3 can guide the flow of flue gas and fly ash, avoiding fly ash... Concentrated flushing of a specific area, and its arc-shaped design can reduce the direct impact of fly ash and particulate matter, disperse the flue gas flow direction, and reduce local wear. Furthermore, by adding a damper cylinder 13, piston body 14, and rubber composite spring 12 to the arc-shaped guide plate 3 to form a buffer structure, the impact force loss can be reduced. Specifically, when fly ash applies impact and vibration force, the piston rod 11 will compress the rubber composite spring 12 and push the piston body 14 to move inside the damper cylinder 13, pushing the viscous fluid through the energy dissipation hole 15 on the piston body 14. Due to the high viscosity of the fluid, the flow of the fluid will be subject to resistance from friction. At this time, the vibration kinetic energy is converted into heat energy through viscous resistance and dissipated. In turn, the damping force generated by the viscous characteristics of the fluid is used to assist in energy dissipation and buffer protection. This is beneficial to improve the impact resistance of the arc-shaped guide plate 3 and prevent deformation or detachment due to flue gas impact.

[0038] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wear-resistant beam for a boiler water-cooled wall, characterized in that, The system includes a wear-resistant beam body (16), on which a primary wear-resistant liner (1) is evenly arranged. A secondary stepped guide assembly (2) is installed on one side of the primary wear-resistant liner (1). An arc-shaped guide plate (3) is evenly arranged on the secondary stepped guide assembly (2). An assembly plate (5) is installed between the arc-shaped guide plate (3) and the primary wear-resistant liner (1) by screws. Damper cylinders (13) are fixed at both ends of the bottom of the assembly plate (5). A piston body (14) is slidably connected inside. Energy dissipation holes (15) are evenly arranged on the piston body (14). A piston rod (11) is connected to the output end of the damper cylinder (13). A rubber composite spring (12) is connected between the piston rod (11) and the arc-shaped guide plate (3). A three-stage energy dissipation seat (4) is welded to the bottom of the assembly plate (5). A hollow turntable (7) is rotatably connected inside the three-stage energy dissipation seat (4). Anti-fan blades (10) are evenly fixed inside the hollow turntable (7).

2. The anti-wear beam for a boiler water-cooled wall according to claim 1, characterized in that: An alumina copper welding layer is provided on the side of the primary wear-resistant liner (1) away from the secondary stepped drainage component (2).

3. The anti-wear beam for a boiler water-cooled wall according to claim 1, characterized in that: The arc-shaped guide plate (3) is arranged in a stepped manner in the vertical direction of the secondary stepped diversion component (2).

4. The anti-wear beam for a boiler water-cooled wall according to claim 1, characterized in that: The damper cylinders (13) are symmetrically distributed at both ends of the assembly plate (5).

5. The anti-wear beam for a boiler water-cooled wall according to claim 1, characterized in that: The hollow turntable (7) has guide sliders (8) uniformly welded to its outer side wall, and the three-stage energy-consuming seat (4) has an annular guide cavity (6) that is slidably connected to the guide sliders (8).

6. The anti-wear beam for a boiler water-cooled wall according to claim 5, characterized in that: The guide slider (8) is uniformly and movably connected with balls (9) that are in contact with the inner wall of the annular guide slide cavity (6).

7. The anti-wear beam for a boiler water-cooled wall according to claim 1, characterized in that: The material of the first-level wear-resistant liner (1) is a rare earth wear-resistant alloy plate.

8. The anti-wear beam for a boiler water-cooled wall according to claim 1, characterized in that: The outer walls of the arc-shaped guide plate (3) and the fan blades (10) are coated with tungsten carbide.

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