Honeycomb type anti-wear assembly for boiler water walls

Abstract

The utility model provides a kind of honeycomb type anti-abrasion assembly for boiler water-cooled wall, including the anti-abrasion unit of several for being installed on water-cooled wall, the anti-abrasion unit is regular polygon structure, and several anti-abrasion units are spliced to form honeycomb structure, and the anti-abrasion unit is made of high-temperature-resistant, wear-resistant material.The utility model is spliced into honeycomb structure by using several regular polygon anti-abrasion units, replaces the traditional whole castable layer.This modular design gives anti-abrasion layer excellent overall structural stability and impact resistance, even if single unit damage also cannot affect the whole, fundamentally avoids the risk of large-area peeling, and honeycomb structure realizes dead angle protection, and protection effect is more comprehensive and reliable.

Description

Technical Field

[0001] This utility model relates to the field of anti-wear technology for boiler water-cooled walls, and in particular to a honeycomb anti-wear component for boiler water-cooled walls. Background Technology

[0002] Currently, wear protection for boiler heating surfaces commonly involves using refractory castables to completely cover easily worn areas. This material, with its high temperature resistance and high hardness, can effectively resist wear in a short period, and is therefore widely used in power plants.

[0003] However, castable refractory materials have poor resistance to bursting and are prone to bursting and detachment under the continuous scouring of high-temperature, high-speed material flows. Once local detachment occurs, not only will the heated surface substrate be exposed, but new eddies will also form at the detachment site, further exacerbating wear in that area. Therefore, relying solely on castable refractory materials for protection has significant technical shortcomings; the detachment problem is difficult to avoid and seriously affects the reliability and service life of the boiler. Utility Model Content

[0004] This invention proposes a honeycomb anti-wear component for boiler water-cooled walls, which solves the problems of easy cracking and falling off that exist in the existing anti-wear measures that use refractory castable to cover the wear-prone areas.

[0005] The technical solution of this utility model is implemented as follows: This utility model provides a honeycomb anti-wear component for boiler water-cooled walls, including several anti-wear units installed on the water-cooled wall. The anti-wear units are regular polygonal structures, and several anti-wear units are spliced ​​together to form a honeycomb structure. The anti-wear units are made of high-temperature resistant and wear-resistant materials.

[0006] Preferably, the bottom surface of the anti-wear unit is provided with a boss, and the side wall of the boss is an arc surface that fits against the outer wall of the water-cooled wall tube.

[0007] Specifically, the anti-wear unit has a through hole at the center of its top surface, and a connector is installed in the through hole. The bottom end of the connector is welded and fixed to the water-cooled wall fins.

[0008] Preferably, the through hole is a threaded hole, and the connector is a bolt.

[0009] Preferably, the sidewall of the anti-wear unit is provided with protrusions or grooves that cooperate with the sidewalls of adjacent anti-wear units, and adjacent anti-wear units are engaged by the protrusions or grooves on the sidewalls.

[0010] Optionally, the wear-resistant unit is welded and fixed to the water-cooled wall.

[0011] Preferably, the wear-resistant unit has a regular hexagonal structure.

[0012] Preferably, the high-temperature resistant and wear-resistant material includes ceramic materials.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) This utility model replaces the traditional integral castable layer by splicing several regular polygonal anti-wear units into a honeycomb structure. This modular design gives the anti-wear layer excellent overall structural stability and impact resistance. Even if a single unit is damaged, it will not affect the whole, fundamentally avoiding the risk of large-area detachment. At the same time, the honeycomb structure achieves protection without dead angles, and the protection effect is more comprehensive and reliable. (2) By setting a boss with a fitting arc surface on the bottom surface of the anti-wear unit, the anti-wear unit can be tightly attached to the outer wall of the water-cooled wall tube. This design greatly enhances the bonding between the anti-wear component and the heated surface, reduces the installation gap, and effectively eliminates the hidden danger of eddy currents and aggravated wear caused by poor fitting. (3) This utility model achieves the dual guarantee of mechanical fastening and welding reinforcement by opening a through hole in the center of the anti-wear unit and using the method of welding and fixing the connector; the bottom end of the connector is welded to the fin, forming a strong anchoring force, ensuring that the entire anti-wear component can maintain extremely high connection strength and working stability under the harsh working conditions of high temperature and high speed scouring, and eliminating the problem of falling off. (4) By setting a snap-fit ​​structure with protrusions or grooves on the side wall of the anti-wear unit, the adjacent units can interlock and be accurately positioned during assembly, which not only simplifies the installation process, but also effectively enhances the integrity and mechanical properties of the honeycomb array. (5) This utility model selects a regular hexagon as the shape of the anti-wear unit, which makes the single structure more stable and can achieve the most effective dense arrangement within a limited area, maximizing structural stability; it is made of high temperature and wear-resistant materials such as ceramics, which ensures that the anti-wear unit body has excellent performance to cope with the high temperature, corrosion and scouring environment inside the boiler, and ensures the long-term effectiveness of protection from the material source. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a top view of the honeycomb anti-wear component of this utility model arranged on a water-cooled wall; Figure 2 This is a side sectional view of the honeycomb anti-wear component of this utility model arranged on a water-cooled wall; Figure 3 This is a schematic diagram of the assembly of the anti-wear component and the connector in an embodiment of this utility model; Figure 4 This is a cross-sectional view of the interlocking and splicing of multiple anti-wear units in an embodiment of this utility model; In the diagram: 1. Anti-wear unit; 2. Boss; 3. Arc surface; 4. Through hole; 5. Connector; 6. Water-cooled wall fin; 7. Protrusion; 8. Groove; 9. Water-cooled wall tube. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] Reference Figure 1 This utility model provides a honeycomb anti-wear component for boiler water-cooled walls, including several anti-wear units 1 installed on the water-cooled wall. The anti-wear unit 1 is a regular polygonal structure, and several anti-wear units 1 are spliced ​​together to form a honeycomb structure. The anti-wear unit 1 is made of high temperature resistant and wear-resistant material.

[0018] This invention replaces the traditional monolithic castable layer with a honeycomb structure formed by splicing several regular polygonal wear-resistant units 1. This modular design gives the wear-resistant layer excellent overall structural stability and impact resistance. Even if a single unit is damaged, it will not affect the whole, fundamentally avoiding the risk of large-area detachment. At the same time, the honeycomb structure achieves protection without dead angles, making the protection effect more comprehensive and reliable.

[0019] Preferably, the bottom surface of the anti-wear unit 1 is provided with a boss 2, and the side wall of the boss 2 is an arc surface 3 that fits against the outer wall of the water-cooled wall tube 9. By providing a boss 2 with a fitting arc surface 3 on the bottom surface of the anti-wear unit 1, each anti-wear unit 1 can be tightly attached to the outer wall of the water-cooled wall tube 9. This design greatly enhances the bonding between the anti-wear component and the heated surface, reduces the installation gap, and effectively eliminates the hidden danger of eddy currents and aggravated wear caused by poor fit.

[0020] In this embodiment, the boss 2 and the anti-wear unit 1 body are an integral structure. In specific implementation, the boss 2 and the anti-wear unit 1 body can also be designed as separate structures, and fixedly connected by welding or other methods, depending on the situation.

[0021] Specifically, a through hole 4 is provided at the center of the top surface of the anti-wear unit 1, and a connector 5 is installed in the through hole 4. The bottom end of the connector 5 is welded and fixed to the water-cooled wall fin 6. Preferably, the through hole 4 is a screw hole, the connector 5 is a bolt, and the top end of the through hole 4 is provided with a stepped hole that matches the top end of the bolt. By providing a through hole 4 at the center of the anti-wear unit 1 and using the connector 5 for welding and fixing, a dual guarantee of mechanical fastening and welding reinforcement is achieved. The bottom end of the connector 5 is welded to the fin, forming a strong anchoring force, ensuring that the entire anti-wear assembly can maintain extremely high connection strength and working stability under harsh working conditions of high temperature and high speed erosion, and eliminating the problem of detachment.

[0022] Preferably, the sidewall of the anti-wear unit 1 is provided with a protrusion 7 or a groove 8 that mates with the sidewall of an adjacent anti-wear unit 1, and adjacent anti-wear units 1 are engaged by the protrusion 7 or groove 8 on the sidewall. By providing the engaging structure of the protrusion 7 or groove 8 on the sidewall of the anti-wear unit 1, adjacent units can interlock and be accurately positioned during assembly, which not only simplifies the installation process but also effectively enhances the integrity and mechanical performance of the cellular array.

[0023] Optionally, the wear-resistant unit 1 is welded and fixed to the water-cooled wall.

[0024] Preferably, the wear-resistant unit 1 is a regular hexagonal structure (regular hexagonal prism structure). In specific implementation, other regular polygonal structures can also be used. The regular hexagonal structure used in this embodiment is the most stable single structure and can achieve the most effective dense arrangement within a limited area, maximizing structural stability.

[0025] To ensure that the bottom of the bolt of each anti-wear unit 1 can be welded to the middle of the water-cooled wall fin 6, the inscribed circle diameter of the regular hexagonal anti-wear unit 1 needs to be an even multiple of the sum of the outer diameter of the water-cooled wall tube 9 and the width of the water-cooled wall fin 6. In this embodiment, the inscribed circle diameter of the regular hexagonal anti-wear unit 1 is twice the sum of the outer diameter of the water-cooled wall tube 9 and the width of the water-cooled wall fin 6.

[0026] In order to ensure that each pair of adjacent anti-wear units 1 can be stably engaged, in this embodiment, each of the six sidewalls of the regular hexagonal anti-wear unit 1 is alternately arranged with protrusions 7 and grooves 8.

[0027] Preferably, the high-temperature resistant and wear-resistant material includes ceramic materials. Considering high-temperature resistance, wear resistance, thermal shock resistance, thermal conductivity, machinability, and cost-effectiveness, honeycomb ceramics are the best and most feasible material choice to achieve the purpose of this invention. In specific implementation, other materials can also be flexibly selected according to the actual situation, such as metals or alloys (heat-resistant stainless steel, high-temperature alloys, etc.), other non-metallic high-performance materials (silicon carbide composite materials, silicon nitride sintered bodies, etc.), or traditional refractory bricks, etc.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A honeycomb anti-wear component for boiler water-cooled walls, characterized in that, It includes several anti-wear units (1) installed on the water-cooled wall. The anti-wear unit (1) is a regular polygonal structure. Several anti-wear units (1) are spliced ​​together to form a honeycomb structure. The anti-wear unit (1) is made of high temperature resistant and wear-resistant materials.

2. A honeycomb anti-wear component for boiler water-cooled walls as described in claim 1, characterized in that, The bottom surface of the anti-wear unit (1) is provided with a boss (2), and the side wall of the boss (2) is an arc surface (3) that fits against the outer wall of the water-cooled wall tube (9).

3. A honeycomb anti-wear assembly for boiler water-cooled walls as described in claim 1 or 2, characterized in that, The wear-resistant unit (1) has a through hole (4) at the center of its top surface. A connector (5) is installed in the through hole (4). The bottom end of the connector (5) is welded and fixed to the water-cooled wall fin (6).

4. A honeycomb anti-wear component for boiler water-cooled walls as described in claim 3, characterized in that, The through hole (4) is a screw hole, and the connector (5) is a bolt.

5. A honeycomb anti-wear component for boiler water-cooled walls as described in claim 1, characterized in that, The side wall of the anti-wear unit (1) is provided with a protrusion (7) or groove (8) that cooperates with the side wall of the adjacent anti-wear unit (1). The adjacent anti-wear units (1) are connected by the protrusion (7) and groove (8) of the side wall.

6. A honeycomb anti-wear assembly for boiler water-cooled walls as described in claim 1, characterized in that, The wear-resistant unit (1) is welded and fixed to the water-cooled wall.

7. A honeycomb anti-wear assembly for boiler water-cooled walls as described in claim 1, characterized in that, The wear-resistant unit (1) has a regular hexagonal structure.

8. A honeycomb anti-wear component for boiler water-cooled walls as described in claim 1, characterized in that, The high-temperature resistant and wear-resistant materials include ceramic materials.

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