Wear-resistant structure of flow passage

Abstract

The application relates to a wear-resistant structure of a flow passage component, and relates to the technical field of high-temperature material conveying and industrial fluid transmission.The wear-resistant structure comprises a flow passage component base body, a main wear-resistant layer and a fixing assembly, and the main wear-resistant layer is attached to the fluid contact surface of the flow passage component base body.The application is characterized in that the flow passage component base body is made of a high-temperature-resistant alloy material, the main wear-resistant layer is made of a ceramic matrix composite material and is attached to the fluid contact surface of the base body, when high-temperature fluid containing abrasive particles flows through, the main wear-resistant layer directly contacts the fluid, the high-hardness characteristic of the ceramic matrix composite material resists the scouring and friction of the fluid, and the flow passage component base body is made of a high-temperature-resistant alloy material to withstand a high-temperature environment and provide mechanical support for the overall structure.The application solves the problem of insufficient wear resistance of the existing flow passage component, avoids the easy wearing and peeling of a single metal material or a common coating, prolongs the service life of the flow passage component, reduces the replacement frequency, and reduces the equipment operation and maintenance cost.

Description

Technical Field

[0001] This application relates to the technical fields of high-temperature material conveying and industrial fluid transmission, and in particular to a wear-resistant structure for flow passage components. Background Technology

[0002] Flow-through components are key parts in equipment for conveying high-temperature materials and industrial fluids. They are widely used in pipelines, valves, pumps, and other devices in metallurgy, chemical industry, and building materials. These components come into direct contact with high-temperature fluids and media containing abrasive particles, and must withstand the scouring, friction, and high-temperature erosion of the media. Existing flow-through components have several limitations: First, their wear resistance is insufficient. Most flow-through components use a single metal material or a simple coating structure, which is prone to surface wear and peeling under the scouring of fluids containing hard particles, leading to a shortened service life, frequent replacements, and increased equipment maintenance costs. Second, their structural design is unreasonable. The wear-resistant layer is not firmly bonded to the substrate, and under high-temperature conditions, it is prone to thermal expansion and contraction mismatch, resulting in cracking and peeling, affecting the stability of equipment operation. Furthermore, they lack targeted protective structures. The fluid contact surfaces of flow-through components are all of uniform wear-resistant specifications, without reinforcing protection for critical areas with high scouring intensity, leading to excessively rapid local wear and premature failure of the overall structure. Therefore, there is an urgent need for a wear-resistant structure for flow components that is reliable, has excellent wear resistance, and is suitable for high-temperature and complex working conditions, in order to solve the problems existing in the current technology. Utility Model Content

[0003] The purpose of this application is to provide a wear-resistant structure for flow passage components, which has the characteristics of reliable structure, excellent wear resistance, and adaptability to high temperature and complex working conditions.

[0004] This application provides a wear-resistant structure for a flow-through component, employing the following technical solution: It includes a flow-through component substrate, a main wear-resistant layer, and a fixing component. The main wear-resistant layer is fitted onto the fluid contact surface of the flow-through component substrate. The fixing component is distributed circumferentially along the flow-through component substrate and penetrates the main wear-resistant layer to connect with the flow-through component substrate. The flow-through component substrate is made of a high-temperature resistant alloy material, and the main wear-resistant layer is a ceramic matrix composite material. A transition bonding layer is provided on the side of the main wear-resistant layer near the flow-through component substrate, and the transition bonding layer is tightly bonded to both the flow-through component substrate and the main wear-resistant layer. Reinforcing wear-resistant blocks are provided at the fluid inlet end, outlet end, and inner side of the bend of the flow-through component substrate. The reinforcing wear-resistant blocks are embedded inside the main wear-resistant layer, and the surface of the reinforcing wear-resistant blocks is flush with the surface of the main wear-resistant layer. By adopting the above technical solutions, the substrate of the flow-through component is made of a high-temperature resistant alloy material, which can withstand high-temperature environments and provide stable mechanical support for the overall structure, preventing deformation or damage to the substrate caused by high temperatures. The main wear-resistant layer is a ceramic matrix composite material that adheres to the fluid contact surface of the substrate, directly resisting the scouring and friction of high-temperature fluids containing abrasive particles. This solves the problems of insufficient wear resistance and easy wear and peeling of existing flow-through components made of single metal materials or ordinary coatings, extending the service life of the flow-through component and reducing maintenance costs. The transition bonding layer is placed between the main wear-resistant layer and the substrate of the flow-through component and is tightly bonded, which can enhance the connection stability between the two, while buffering the thermal expansion and contraction stress caused by material differences at high temperatures, preventing the main wear-resistant layer from cracking or falling off, ensuring the stability of structural operation, and solving the problem of weak bonding between the wear-resistant layer and the substrate in existing flow-through components. The fluid inlet, outlet, and inner side of the bend of the flow-through component are reinforced with wear-resistant blocks, which are embedded in the main wear-resistant layer and kept flush with the surface. This can provide targeted reinforcement and protection for critical areas with high scouring intensity, avoid premature failure of the overall structure due to excessive local wear, and solve the problem of lack of targeted protection in existing flow-through components.

[0005] Preferably, the fixing component includes a wear-resistant bolt and a locking nut. The threaded portion of the wear-resistant bolt passes through the main wear-resistant layer and the transition adhesive layer in sequence and is threadedly connected to the flow-through component substrate. The locking nut cooperates with the wear-resistant bolt to press the main wear-resistant layer.

[0006] By adopting the above technical solution, the fixing component includes wear-resistant bolts and locking nuts. The wear-resistant bolts penetrate the main wear-resistant layer and the transition bonding layer and are threadedly connected to the substrate of the flow-through component. The locking nuts, together with the wear-resistant bolts, compress the main wear-resistant layer, thereby further strengthening the connection between the main wear-resistant layer and the substrate through mechanical fixing. This prevents the wear-resistant layer from shifting or falling off due to long-term fluid erosion. The wear-resistant bolts themselves have wear-resistant properties, preventing the fixing components from becoming weak points in wear, and improving the overall structural robustness and reliability.

[0007] Preferably, the surface of the main wear-resistant layer is provided with a plurality of guide grooves.

[0008] By adopting the above technical solution, several flow guide grooves are provided on the surface of the main wear-resistant layer, which can guide the fluid to flow in an orderly manner on the surface of the wear-resistant layer, reduce the local strong scouring caused by the chaotic fluid flow, reduce the local wear rate of the main wear-resistant layer, help improve the wear resistance of the main wear-resistant layer, and at the same time optimize the fluid transmission state and reduce flow resistance.

[0009] Preferably, the guide channels are opened along the fluid flow direction and are evenly spaced.

[0010] By adopting the above technical solution, the guide channels are opened along the fluid flow direction and are evenly distributed, which can more accurately guide the fluid to flow smoothly in the preset direction, minimize the generation of turbulence, further reduce the local scouring intensity of turbulence on the main wear-resistant layer, and extend the service life of the main wear-resistant layer; the evenly distributed structure can also ensure that the fluid is subjected to balanced force, avoid the decrease in transmission efficiency caused by local fluid accumulation, and improve the overall fluid transmission efficiency.

[0011] Preferably, the reinforced wear-resistant block is made of silicon carbide ceramic material, and the reinforced wear-resistant block is fixed to the main wear-resistant layer by a high-temperature adhesive.

[0012] By adopting the above technical solution, the reinforced wear-resistant block is made of silicon carbide ceramic material, which has better hardness and wear resistance than the main wear-resistant layer. It can more effectively withstand the strong abrasive effect of turbulent fluid in critical areas and enhance the protective effect. By fixing it to the main wear-resistant layer with a high-temperature adhesive, the connection stability between the reinforced wear-resistant block and the main wear-resistant layer can be enhanced, preventing it from loosening or falling off under the flushing of fluid, and ensuring the long-term effectiveness of protection in critical areas.

[0013] Preferably, the flow-through component substrate has a heat dissipation channel inside, the heat dissipation channel extends axially along the flow-through component substrate, and both ends of the heat dissipation channel are respectively connected to the outside of the flow-through component substrate.

[0014] By adopting the above technical solution, a heat dissipation channel is provided inside the substrate of the flow component, which extends along the axial direction of the substrate and connects with the outside. This can quickly dissipate the high-temperature heat absorbed by the substrate, reduce the working temperature of the substrate, main wear-resistant layer and transition bonding layer of the flow component, avoid the degradation of the material performance of each component due to high temperature, adapt to high temperature and complex working conditions, reduce the impact of high temperature on the structural connection stability, and extend the overall service life of the flow component.

[0015] Preferably, the head of the wear-resistant bolt is provided with a protective cap, which covers the locking nut and is in contact with the surface of the main wear-resistant layer.

[0016] By adopting the above technical solution, the head of the wear-resistant bolt is equipped with a protective cap, which covers the locking nut and is attached to the surface of the main wear-resistant layer. This can shield the fixing components, prevent the fluid from directly scouring and corroding the wear-resistant bolt and locking nut, prevent the fixing components from wearing out and failing, and extend the service life of the fixing components. The protective cap is attached to the surface of the main wear-resistant layer, which can prevent the fixing components from bulging and forming turbulence, and does not interfere with the smooth flow of fluid, thus ensuring the fluid transmission efficiency.

[0017] Preferably, the transition bonding layer is made of nickel-based alloy powder metallurgy material, and the thickness of the transition bonding layer is less than the thickness of the main wear-resistant layer.

[0018] By adopting the above technical solution, the transition bonding layer is made of nickel-based alloy powder metallurgy material. Its material properties are compatible with the substrate of the flow component and the main wear-resistant layer, which can further enhance the bonding effect among the three and improve the connection stability. The thickness of the transition bonding layer is less than that of the main wear-resistant layer. While fully utilizing the buffering thermal stress and enhancing the bonding effect, it will not occupy too much space or hinder heat transfer, nor will it affect the main wear-resistant layer from performing its main wear-resistant function, thus achieving an optimized balance between function and structure.

[0019] In summary, this application includes at least one of the following beneficial technical effects: 1. This wear-resistant structure for a flow-through component utilizes a high-temperature resistant alloy as the component substrate and a ceramic matrix composite material as the main wear-resistant layer, which is bonded to the fluid contact surface of the substrate. When a high-temperature fluid containing abrasive particles flows through, the main wear-resistant layer directly contacts the fluid. The high hardness of the ceramic matrix composite material resists the scouring and friction of the fluid, while the high-temperature resistant alloy material of the flow-through component substrate withstands the high-temperature environment and provides mechanical support for the overall structure. This solves the problem of insufficient wear resistance in existing flow-through components, avoids the easy wear and peeling of single metal materials or ordinary coatings, and extends the lifespan of the flow-through component. Extends the service life of flow components, reduces replacement frequency, and lowers equipment operation and maintenance costs. A transition bonding layer is placed between the main wear-resistant layer and the flow component substrate, adhering tightly to both. Made of nickel-based alloy powder metallurgy material, the transition bonding layer buffers the thermal expansion stress of the flow component substrate and the main wear-resistant layer under high-temperature conditions, preventing stress concentration. This solves the problem of "weak bonding between the wear-resistant layer and the substrate, leading to cracking and detachment at high temperatures" in existing flow components, improving the bonding stability between the main wear-resistant layer and the flow component substrate, and ensuring the stability of equipment operation.

[0020] 2. This wear-resistant structure for a flow-through component uses fixing components distributed circumferentially along the base of the flow-through component. Wear-resistant bolts penetrate the main wear-resistant layer and the transition bonding layer, connecting them to the base with threads. Locking nuts tighten the main wear-resistant layer. During installation, the threads of the wear-resistant bolts and locking nuts securely fix the main wear-resistant layer and the transition bonding layer to the base of the flow-through component, preventing fluid erosion from causing displacement of the wear-resistant layer. The wear-resistant bolts themselves possess wear-resistant properties, preventing the fixing components from becoming weak points in wear, further strengthening the connection between the main wear-resistant layer and the base, supplementing the fixing effect of the transition bonding layer, preventing the wear-resistant layer from falling off, and improving the overall reliability of the structure. Through strengthening… Wear-resistant blocks are located at the fluid inlet, outlet, and inner side of the bend in the flow-through component substrate. They are embedded in the main wear-resistant layer and have a flush surface. Made of silicon carbide ceramic, they are fixed to the main wear-resistant layer with a high-temperature adhesive. The fluid tends to flow turbulently at the inlet, outlet, and inner side of the bend, resulting in higher erosion intensity than other areas. The reinforced wear-resistant blocks made of silicon carbide ceramic can withstand stronger abrasion and work in synergy with the main wear-resistant layer to solve the problem of existing flow-through components "lacking targeted protection and prone to excessive local wear in key areas". They provide enhanced protection for high-erosion areas, preventing excessive local wear from causing premature failure of the overall structure and extending the overall service life of the flow-through component. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present application. Figure 2 This is a side view of the structure of this application; Figure 3 This is a partial cross-sectional structural diagram of this application; Figure 4 for Figure 2 A partially enlarged structural diagram; Figure 5 This is an enlarged structural schematic diagram of the fixed component of this application.

[0022] In the picture: 1. Flow component substrate; 2. Main wear-resistant layer; 3. Fixing component; 31. Wear-resistant bolt; 32. Locking nut; 33. Protective cap; 4. Transition bonding layer; 5. Reinforced wear-resistant block; 6. Flow guide groove; 7. Heat dissipation channel. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0024] Example 1: A wear-resistant structure for a flow passage component, referring to... Figure 1 , Figure 3 , Figure 4 and Figure 5The system includes a flow-through component substrate 1, a main wear-resistant layer 2, and a fixing component 3. The main wear-resistant layer 2 is fitted onto the fluid contact surface of the flow-through component substrate 1. The fixing component 3 is distributed circumferentially along the flow-through component substrate 1 and penetrates the main wear-resistant layer 2 to connect with the flow-through component substrate 1. The flow-through component substrate 1 is made of a high-temperature resistant alloy, and the main wear-resistant layer 2 is made of a ceramic matrix composite material. A transition bonding layer 4 is provided on the side of the main wear-resistant layer 2 near the flow-through component substrate 1, and the transition bonding layer 4 is tightly bonded to both the flow-through component substrate 1 and the main wear-resistant layer 2. Reinforcing wear-resistant blocks 5 are provided at the fluid inlet end, outlet end, and inside the bend of the flow-through component substrate 1. The reinforcing wear-resistant blocks 5 are embedded inside the main wear-resistant layer 2, and the surface of the reinforcing wear-resistant blocks 5 is flush with the surface of the main wear-resistant layer 2. The fixed component 3 includes a wear-resistant bolt 31 and a locking nut 32. The threaded part of the wear-resistant bolt 31 passes through the main wear-resistant layer 2 and the transition bonding layer 4 in sequence and is threadedly connected to the flow component substrate 1. The locking nut 32 cooperates with the wear-resistant bolt 31 to press the main wear-resistant layer 2. The flow component substrate 1 is made of high-temperature resistant alloy material, which can withstand high-temperature environment and provide stable mechanical support for the overall structure, avoiding deformation or damage to the substrate caused by high temperature. The main wear-resistant layer 2 is a ceramic matrix composite material and is attached to the fluid contact surface of the substrate. It can directly resist the scouring and friction of high-temperature fluid containing abrasive particles, solve the problem of insufficient wear resistance and easy wear and peeling of existing flow components made of single metal material or ordinary coating, extend the service life of flow components and reduce operation and maintenance costs. The transition bonding layer 4 is placed between the main wear-resistant layer 2 and the flow component substrate 1 and is tightly bonded to enhance the connection stability between the two. At the same time, it buffers the thermal expansion and contraction stress caused by material differences at high temperatures, prevents the main wear-resistant layer 2 from cracking or falling off, ensures the structural operation stability, and solves the problem of the existing flow component wear-resistant layer not being firmly bonded to the substrate. The fluid inlet, outlet, and inner side of the bend of the flow-through component substrate 1 are provided with reinforced wear-resistant blocks 5, which are embedded in the main wear-resistant layer 2 and kept flush with the surface. This can provide targeted reinforcement and protection for key areas with high scouring intensity, avoid premature failure of the overall structure due to excessive local wear, and solve the problem of lack of targeted protection in existing flow-through components. The fixing component 3 includes wear-resistant bolts 31 and locking nuts 32. The wear-resistant bolts 31 penetrate the main wear-resistant layer 2 and the transition bonding layer 4 and are threadedly connected to the flow-through component substrate 1. The locking nuts 32 press the main wear-resistant layer 2, and the connection between the main wear-resistant layer 2 and the substrate is further strengthened by mechanical fixing, preventing the wear-resistant layer from shifting or falling off due to long-term fluid scouring. The wear-resistant bolts 31 themselves have wear-resistant properties, preventing the fixing components from becoming weak points of wear, and improving the overall structural strength and reliability.

[0025] Reference Figure 1 , Figure 3 and Figure 4The surface of the main wear-resistant layer 2 is provided with several guide grooves 6. The guide grooves 6 are opened along the fluid flow direction and are evenly spaced. The presence of several guide grooves 6 on the surface of the main wear-resistant layer 2 can guide the fluid to flow orderly on the surface of the wear-resistant layer, reduce the local strong scouring caused by fluid flow chaos, reduce the local wear rate of the main wear-resistant layer 2, and help improve the wear resistance of the main wear-resistant layer 2. At the same time, it optimizes the fluid transmission state, reduces flow resistance, and the guide grooves 6 are opened along the fluid flow direction and are evenly spaced, which can more accurately guide the fluid to flow smoothly in the preset direction, minimize the generation of turbulence, further reduce the local scouring intensity of turbulence on the main wear-resistant layer 2, and extend the service life of the main wear-resistant layer 2. The evenly distributed structure can also ensure the fluid force balance, avoid the decrease in transmission efficiency caused by local fluid accumulation, and improve the overall fluid transmission efficiency.

[0026] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The reinforced wear-resistant block 5 is made of silicon carbide ceramic and is fixed to the main wear-resistant layer 2 with a high-temperature adhesive. A heat dissipation channel 7 is provided inside the flow-through component substrate 1, extending axially along the substrate 1, with both ends connected to the outside of the substrate 1. The reinforced wear-resistant block 5, made of silicon carbide ceramic, has superior hardness and wear resistance compared to the main wear-resistant layer 2, enabling it to more effectively withstand the strong abrasive effects of turbulent fluid in critical areas and enhance protection. The high-temperature adhesive fixation to the main wear-resistant layer 2 further increases its durability. The connection stability between the wear-resistant block 5 and the main wear-resistant layer 2 is strengthened to prevent them from loosening or falling off under fluid scouring, ensuring the long-term effectiveness of protection for critical areas. The heat dissipation channel 7 is provided inside the flow component substrate 1 and extends along the axial direction of the substrate and communicates with the outside. It can quickly dissipate the high-temperature heat absorbed by the substrate, reduce the working temperature of the flow component substrate 1, the main wear-resistant layer 2 and the transition bonding layer 4, avoid the degradation of the material performance of each component due to high temperature, adapt to high temperature and complex working conditions, reduce the impact of high temperature on the structural connection stability, and extend the overall service life of the flow component.

[0027] Reference Figure 1 , Figure 4 and Figure 5The head of the wear-resistant bolt 31 is provided with a protective cap 33, which covers the locking nut 32 and is in contact with the surface of the main wear-resistant layer 2. The transition bonding layer 4 is made of nickel-based alloy powder metallurgy material, and the thickness of the transition bonding layer 4 is less than the thickness of the main wear-resistant layer 2. The protective cap 33 on the head of the wear-resistant bolt 31, which covers the locking nut 32 and is in contact with the surface of the main wear-resistant layer 2, can shield the fixing component 3, prevent fluid from directly scouring and corroding the wear-resistant bolt 31 and the locking nut 32, prevent the fixing component from wearing and failing, and extend the service life of the fixing component 3; the protective cap 33 and the main wear-resistant layer 2 are in contact with the surface of the main wear-resistant layer 2. The surface bonding of layer 2 avoids the formation of turbulence due to protrusions of fixed components, does not interfere with the smooth flow of fluid, and ensures fluid transmission efficiency. The transition bonding layer 4 is made of nickel-based alloy powder metallurgy material, whose material properties are compatible with the substrate 1 of the flow-through component and the main wear-resistant layer 2, which can further enhance the bonding effect among the three and improve the connection stability. The thickness of the transition bonding layer 4 is less than that of the main wear-resistant layer 2. While fully utilizing the buffering thermal stress and enhancing the bonding effect, it will not occupy too much space or hinder heat transfer, nor will it affect the main wear-resistant layer 2 from performing its main wear-resistant function, thus achieving an optimized balance between function and structure.

[0028] In this embodiment, by setting the flow-through component substrate 1 to be made of a high-temperature resistant alloy material, and the main wear-resistant layer 2 to be a ceramic matrix composite material that is attached to the fluid contact surface of the substrate, when a high-temperature fluid containing abrasive particles flows through, the main wear-resistant layer 2 directly contacts the fluid. The high hardness of the ceramic matrix composite material resists the scouring and friction of the fluid, while the flow-through component substrate 1, made of a high-temperature resistant alloy material, withstands the high-temperature environment and provides mechanical support for the overall structure. This solves the problem of insufficient wear resistance in existing flow-through components, avoids the easy wear and peeling of single metal materials or ordinary coatings, and extends the service life of the flow-through component. Extends service life, reduces replacement frequency, and lowers equipment operation and maintenance costs. A transition bonding layer 4 is placed between the main wear-resistant layer 2 and the flow component substrate 1, and is tightly bonded to both. It is made of nickel-based alloy powder metallurgy material. Under high-temperature conditions, the flow component substrate 1 and the main wear-resistant layer 2 are prone to thermal expansion and contraction differences due to their different materials. The transition bonding layer 4 can buffer the thermal expansion stress of the two, avoid stress concentration, and solve the problem of "the wear-resistant layer and the substrate are not firmly bonded, and are prone to cracking and falling off at high temperatures" in existing flow components. It improves the bonding stability between the main wear-resistant layer 2 and the flow component substrate 1, and ensures the stability of equipment operation.

[0029] The implementation principle of this application embodiment is as follows: The flow component substrate 1 is made of high-temperature resistant alloy material, which serves as the main structural body to provide mechanical support and withstand the high-temperature environment during fluid transmission; the main wear-resistant layer 2 is a ceramic matrix composite material, which is attached to the fluid contact surface of the flow component substrate 1. When a high-temperature fluid containing abrasive particles flows through, the main wear-resistant layer 2 directly contacts the fluid, using the high hardness of the ceramic matrix composite material to resist the scouring and friction of the fluid, thus preventing the flow component substrate 1 from being directly worn, forming the first layer of core protection; the transition bonding layer 4 is located between the main wear-resistant layer 2 and the flow component substrate 1, and is made of nickel-based alloy powder metallurgy material. On the one hand, it achieves a stable bond between the two through close adhesion, and on the other hand, under high-temperature conditions, it can buffer the thermal expansion and contraction stress caused by the material difference between the flow component substrate 1 and the main wear-resistant layer 2, avoiding stress concentration that could cause the main wear-resistant layer 2 to crack or fall off, thus ensuring the stability of the core protective layer. Meanwhile, the thickness of the transition bonding layer 4 is less than that of the main wear-resistant layer 2. While playing a buffering role, it does not affect the wear-resistant main function of the main wear-resistant layer 2, and also avoids hindering heat transfer. The fixing component 3 is distributed circumferentially along the flow-through component substrate 1. During installation, the threaded portion of the wear-resistant bolt 31 passes through the main wear-resistant layer 2 and the transition bonding layer 4 in sequence, forming a threaded connection with the flow-through component substrate 1. Then, through the cooperation of the locking nut 32 and the wear-resistant bolt 31, the main wear-resistant layer 2 and the transition bonding layer 4 are tightly pressed onto the flow-through component substrate 1. The mechanical fixing method supplements the bonding effect of the transition bonding layer 4, preventing the main wear-resistant layer 2 from shifting or falling off due to long-term fluid erosion. At the same time, the wear-resistant bolt 31 itself has wear-resistant properties, avoiding the need for fixing. The components become the weak points of wear in the structure, further strengthening the overall structural integrity; the protective cap 33 is set on the head of the wear-resistant bolt 31, covering the locking nut 32 and adhering to the surface of the main wear-resistant layer 2. When the fluid flows, the protective cap 33 can shield the head of the wear-resistant bolt 31 and the locking nut 32, preventing the fluid from directly scouring and eroding the fixing component 3, and preventing the fixing component from wearing out and failing; at the same time, the protective cap 33 is flush with the surface of the main wear-resistant layer 2, which can prevent the fixing component from protruding and forming turbulence, and does not interfere with the smooth flow of the fluid; the fluid inlet end, outlet end and the inside of the bend of the flow component base 1 are prone to turbulent flow due to the change of fluid flow direction, and the scouring intensity is much higher than other areas, so reinforced wear-resistant blocks 5 are set at these locations.The reinforced wear-resistant block 5 is made of silicon carbide ceramic and is embedded inside the main wear-resistant layer 2 with its surface flush with the main wear-resistant layer 2. It is firmly fixed to the main wear-resistant layer 2 with a high-temperature adhesive. When turbulent fluid washes over these areas, the reinforced wear-resistant block 5 can withstand stronger abrasion and works in conjunction with the main wear-resistant layer 2 to form targeted protection, preventing premature failure of the overall structure due to excessively rapid local wear in critical areas. The surface of the main wear-resistant layer 2 has several guide grooves 6, which are evenly spaced and opened along the direction of fluid flow. When the fluid flows over the surface of the main wear-resistant layer 2, the guide grooves 6 can guide the fluid to flow smoothly in a fixed direction, reducing the formation of fluid residue on the surface of the wear-resistant layer. Turbulence reduces the local scouring intensity of the main wear-resistant layer 2, which not only helps to improve the wear resistance of the main wear-resistant layer 2, but also optimizes the fluid transmission path and improves the transmission efficiency. The flow component substrate 1 is provided with a heat dissipation channel 7, which extends along the axial direction of the flow component substrate 1 and is connected to the outside at both ends. Under high temperature conditions, the heat absorbed by the flow component substrate 1 can be exchanged with the outside air through the heat dissipation channel 7, and the internal heat can be quickly discharged, reducing the working temperature of the flow component substrate 1, the main wear-resistant layer 2 and the transition bonding layer 4. This avoids the degradation of the material properties of each component due to high temperature, and ensures that the structure can still stably perform its wear-resistant protection function under high temperature and complex working conditions.

Claims

1. A wear-resistant structure for a flow-through component, comprising a flow-through component substrate (1), a main wear-resistant layer (2), and a fixing assembly (3), characterized in that: The main wear-resistant layer (2) is attached to the fluid contact surface of the flow-through component substrate (1). The fixing component (3) is distributed circumferentially along the flow-through component substrate (1) and the fixing component (3) penetrates the main wear-resistant layer (2) and is connected to the flow-through component substrate (1). The flow-through component substrate (1) is made of high-temperature resistant alloy material, and the main wear-resistant layer (2) is made of ceramic matrix composite material. The main wear-resistant layer (2) is provided with a transition bonding layer (4) on the side close to the flow-through component substrate (1). The transition bonding layer (4) is tightly attached to the flow-through component substrate (1) and the main wear-resistant layer (2) respectively. The fluid inlet end, outlet end and the inner side of the bend of the flow-through component substrate (1) are provided with reinforced wear-resistant blocks (5). The reinforced wear-resistant blocks (5) are embedded in the main wear-resistant layer (2), and the surface of the reinforced wear-resistant blocks (5) is flush with the surface of the main wear-resistant layer (2).

2. The wear-resistant structure for a flow-through component according to claim 1, characterized in that: The fixing component (3) includes a wear-resistant bolt (31) and a locking nut (32). The threaded part of the wear-resistant bolt (31) passes through the main wear-resistant layer (2) and the transition bonding layer (4) in sequence and is threadedly connected to the flow component substrate (1). The locking nut (32) cooperates with the wear-resistant bolt (31) to press the main wear-resistant layer (2).

3. The wear-resistant structure for a flow-through component according to claim 1, characterized in that: The surface of the main wear-resistant layer (2) is provided with several guide grooves (6).

4. The wear-resistant structure for a flow-through component according to claim 3, characterized in that: The guide groove (6) is opened along the fluid flow direction and the guide groove (6) is evenly spaced.

5. The wear-resistant structure for a flow-through component according to claim 1, characterized in that: The reinforced wear-resistant block (5) is made of silicon carbide ceramic material, and the reinforced wear-resistant block (5) is fixed to the main wear-resistant layer (2) by a high-temperature adhesive.

6. The wear-resistant structure for a flow-through component according to claim 1, characterized in that: The flow-through component base (1) is provided with a heat dissipation channel (7) inside. The heat dissipation channel (7) extends along the axial direction of the flow-through component base (1), and both ends of the heat dissipation channel (7) are respectively connected to the outside of the flow-through component base (1).

7. The wear-resistant structure for a flow-through component according to claim 2, characterized in that: The head of the wear-resistant bolt (31) is provided with a protective cap (33), which covers the locking nut (32) and is in contact with the surface of the main wear-resistant layer (2).

8. The wear-resistant structure for a flow-through component according to claim 1, characterized in that: The transition bonding layer (4) is made of nickel-based alloy powder metallurgy material, and the thickness of the transition bonding layer (4) is less than the thickness of the main wear-resistant layer (2).

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