Water-power engineering water turbine blade anti-abrasion protection structure

Abstract

The utility model relates to the technical field of hydroelectric engineering, in particular to a hydroelectric engineering water turbine blade anti-abrasion protection structure which comprises a blade and an anti-abrasion assembly, the surface of the blade is fixedly connected with the anti-abrasion assembly, and the anti-abrasion assembly comprises a bonding layer fixedly connected to the surface of the blade. The surface of the bonding layer is fixedly connected with a wear-resisting piece, the wear-resisting piece is made of a ceramic material, the interior of the wear-resisting piece is fixedly connected with a buffer layer, and the surface of the wear-resisting piece is fixedly connected with protrusions. By arranging the anti-abrasion assembly, high-speed scouring and impacting of silt and impurities can be effectively resisted, the abrasion-resistant service life is prolonged, impact force can be absorbed and dispersed, transmission of the impact force to the blade is reduced, the risk that stress concentration is generated in the blade is reduced, the blade base body structure is protected, the abrasion degree is further reduced, and the service life of the blade is prolonged. The anti-abrasion performance of the blade is improved from multiple dimensions of material abrasion resistance, buffering and damping, fluid mechanics optimization and the like.

Description

Technical Field

[0001] This utility model relates to the field of hydropower engineering technology, and in particular to a wear-resistant protection structure for turbine blades in hydropower engineering. Background Technology

[0002] In hydropower projects, the turbine, as a key piece of equipment converting water energy into mechanical energy, has blades whose performance directly affects its operating efficiency and service life. However, during actual operation, turbine blades are constantly subjected to the scouring and impact of silt and impurities in the water flow, making them highly susceptible to wear. As wear intensifies, the shape and size of the blades change, leading to a decrease in the turbine's hydraulic efficiency and increased operating costs. Furthermore, severe wear can trigger fatigue failure of the blades, or even cause blade breakage and other safety accidents, posing a significant threat to the stable operation of the hydropower project.

[0003] Existing devices mostly use a single surface coating for protection, which is easily peeled off under the impact of high-speed water flow and silt, and the protective effect is not long-lasting. Existing devices lack targeted protection for critical vulnerable parts such as blade edges, and cannot monitor blade wear in real time, making it difficult to take maintenance measures in advance. Utility Model Content

[0004] The purpose of this invention is to solve the problems of the lack of durable protection effect and lack of wear monitoring in existing devices, and to propose a wear protection structure for turbine blades in hydropower projects.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a wear-resistant protective structure for turbine blades in hydropower engineering, comprising blades and wear-resistant components, wherein the wear-resistant components are fixedly connected to the surface of the blades, the wear-resistant components include an adhesive layer fixedly connected to the surface of the blades, a wear-resistant sheet is fixedly connected to the surface of the adhesive layer, the wear-resistant sheet is made of ceramic material, a buffer layer is fixedly connected to the inside of the wear-resistant sheet, and protrusions are fixedly connected to the surface of the wear-resistant sheet.

[0006] Furthermore, a protective component is attached to the surface of the blade edge, the protective component including a slot formed on the blade edge.

[0007] Furthermore, a locking strip is attached to the inner wall of the slot, and the locking strip is made of stainless steel.

[0008] Furthermore, a protective sleeve is fixedly connected to the surface of the card strip, and the protective sleeve is made of highly wear-resistant rubber material.

[0009] Furthermore, the surface of the protective sleeve abuts against the surface of the wear-resistant sheet, and the blade has an open layer inside.

[0010] Furthermore, the blade has an internal cavity, and a pressure sensor is fixedly connected to the inner wall of the cavity.

[0011] Furthermore, there are six blades in total, and a water turbine is fixedly connected to the bottom end of each of the six blades.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, by setting up anti-wear components, the adhesive layer can firmly adhere the wear-resistant sheet to the blade surface, ensuring that the protective structure and the blade form a stable whole, preventing the wear-resistant sheet from falling off under the impact of water flow. The wear-resistant sheet can effectively resist the high-speed scouring and impact of mud, sand and impurities, and improve the wear resistance life. When the wear-resistant sheet is impacted, the buffer layer can absorb and disperse the impact force, reduce the transmission of the impact force to the blade, reduce the risk of stress concentration inside the blade, and protect the blade matrix structure. The protrusions on the surface of the wear-resistant sheet are distributed in a streamlined array, which on the one hand can disturb the water flow boundary layer, reduce the direct contact area between mud and sand and the wear-resistant sheet, and reduce the probability of wear; on the other hand, it can change the movement trajectory of impurities in the water flow, causing them to impact the wear-resistant sheet at a smaller angle, further reducing the degree of wear. The wear resistance performance of the blade is improved from multiple dimensions such as material wear resistance, buffering and shock absorption, and fluid dynamics optimization.

[0014] 2. In this utility model, by setting a protective component, the locking strip can be tightly embedded in the slot, providing a stable installation base for the protective sleeve and preventing the protective sleeve from shifting or falling off under the action of water flow. The protective sleeve can not only effectively absorb the impact energy of impurities in the water flow, but also adapt to the complex shape of the blade edge through its own elastic deformation, forming a comprehensive protective wrap around the easily worn part of the blade edge. The protective sleeve and the surface of the wear-resistant plate are tightly abutted, filling the joint gap of the blade surface protection, preventing mud and sand in the water flow from entering the gap and causing local wear to intensify, forming a continuous and complete protective system. The hollow layer inside the blade provides installation space for the pressure sensor. The pressure sensor monitors the pressure change of the blade under the impact of water flow in real time. When the blade surface wear causes abnormal water flow pressure distribution, the sensor transmits data to the monitoring system. The operation and maintenance personnel can predict the degree of blade wear and potential risks in advance based on the data, and take timely maintenance measures to achieve dynamic monitoring and intelligent early warning of blade wear. The protective component and the pressure sensor work together to strengthen the protection capability of the blade edge and build a wear monitoring mechanism to ensure the safe and stable operation of the turbine blade. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional front view of a wear-resistant protective structure for turbine blades in hydropower engineering.

[0016] Figure 2This utility model provides a side view of a wear-resistant protective structure for turbine blades in hydropower projects.

[0017] Figure 3 This utility model provides a schematic diagram of a turbine blade structure for an anti-wear protection structure for turbine blades in hydropower projects.

[0018] Figure 4 This utility model provides a structural schematic diagram of the wear-resistant component in the wear-resistant protection structure for turbine blades in hydropower projects;

[0019] Figure 5 This utility model presents a schematic diagram of the internal structure for wear protection in a hydroelectric turbine blade wear protection structure.

[0020] Legend:

[0021] 1. Blade; 2. Wear-resistant component; 21. Adhesive layer; 22. Wear-resistant sheet; 23. Buffer layer; 24. Protrusion; 3. Protective component; 31. Slot; 32. Clip; 33. Protective sleeve; 34. Empty layer; 35. Pressure sensor; 4. Water turbine. Detailed Implementation

[0022] Please see Figure 1-5 This utility model provides a technical solution: a wear-resistant protective structure for turbine blades in hydropower projects, including blades 1 and wear-resistant components 2, wherein the wear-resistant components 2 are fixedly connected to the surface of blades 1.

[0023] The following section will explain the specific settings and functions of its anti-wear component 2 and protective component 3.

[0024] In this embodiment: the wear-resistant component 2 includes an adhesive layer 21 fixedly connected to the surface of the blade 1, a wear-resistant sheet 22 fixedly connected to the surface of the adhesive layer 21, the wear-resistant sheet 22 is made of ceramic material, a buffer layer 23 is fixedly connected inside the wear-resistant sheet 22, and a protrusion 24 is fixedly connected to the surface of the wear-resistant sheet 22.

[0025] The aforementioned components achieve the following effects: by setting the adhesive layer 21, a strong chemical and physical bond can be formed between the blade 1 and the wear-resistant plate 22, allowing the wear-resistant plate 22 to adhere tightly to the surface of the blade 1. This allows it to withstand long-term water flow impact without falling off, ensuring the integrity of the protective structure. The wear-resistant plate 22 can effectively resist the scouring and impact of hard particles such as mud, sand, and gravel, significantly reducing the wear rate of the blade surface and extending the service life of the blade.

[0026] Specifically, a protective component 3 is attached to the surface of the edge of the blade 1, and the protective component 3 includes a slot 31 formed on the edge of the blade 1.

[0027] The effect achieved by the above components is as follows: by setting the slot 31 to be precisely machined along the edge contour of the blade 1, it provides a positioning reference for the installation of the protective component 3, ensuring that the protective sleeve 33 can accurately cover the easily worn area of ​​the blade edge, while limiting the installation position of the clip 32 to prevent it from shifting under the impact of water flow.

[0028] Specifically, a card strip 32 is attached to the inner wall of the card slot 31, and the card strip 32 is made of stainless steel.

[0029] The effect achieved by the above components is as follows: by setting the stainless steel clip 32 and the slot 31 to be installed in an interference fit manner, it can be tightly embedded in the slot 31, providing a stable support frame for the protective sleeve 33, enhancing the overall structural strength of the protective component 3, and making it stable in a high-speed water flow environment.

[0030] Specifically, a protective sleeve 33 is fixedly connected to the surface of the card strip 32, and the protective sleeve 33 is made of high wear-resistant rubber material.

[0031] The effects achieved by the above components are as follows: by setting the protective sleeve 33 made of highly wear-resistant rubber material, the friction with impurities in the water flow can be increased, effectively absorbing impact energy; at the same time, it can be deformed to fit tightly into the complex curved surface of the blade edge, forming a flexible wrapping protection for the blade edge, preventing sharp impurities from directly contacting the blade surface and causing wear.

[0032] Specifically, the surface of the protective sleeve 33 abuts against the surface of the wear-resistant sheet 22, and a hollow layer 34 is provided inside the blade 1.

[0033] The effect achieved by the above components is that by setting the protective sleeve 33 to fit tightly against the wear-resistant plate 22, the connection gap of the blade surface protection is filled, forming a continuous protective surface, preventing mud and sand in the water flow from entering the gap and causing local wear.

[0034] Specifically, a hollow layer 34 is provided inside the blade 1, and a pressure sensor 35 is fixedly connected to the inner wall of the hollow layer 34.

[0035] The effect achieved by the above components is as follows: by setting pressure sensor 35, the pressure distribution of the blade under the action of water flow is monitored in real time. When the blade surface changes shape due to wear, which causes abnormal water flow pressure, the sensor can quickly capture pressure change data and transmit it to the monitoring system, so that maintenance personnel can grasp the wear status of the blade in time and realize early warning and accurate location of wear.

[0036] Specifically, there are six blades 1 in total, and the bottom of the six blades 1 is fixedly connected to the water turbine 4.

[0037] The effects achieved by the above components are as follows: by setting six blades 1 evenly distributed around the circumference of the turbine 4, a highly efficient hydraulic conversion structure is formed, which rotates in coordination under the drive of water flow to convert water energy into mechanical energy; the wear-resistant component 2 and the protection component 3 protect each blade, ensure the consistency of the performance of each blade, ensure the stable operation of the turbine 4, and improve the power generation efficiency.

[0038] Working principle: By setting the anti-wear component 2, the adhesive layer 21 can firmly attach the wear-resistant sheet 22 to the surface of the blade 1, ensuring that the protective structure and the blade form a stable whole, preventing the wear-resistant sheet 22 from falling off under the impact of water flow. The wear-resistant sheet 22 can effectively resist the high-speed scouring and impact of mud and impurities, and improve the wear resistance life. When the wear-resistant sheet 22 is impacted, the buffer layer 23 can absorb and disperse the impact force, reduce the transmission of the impact force to the blade 1, reduce the risk of stress concentration inside the blade, and protect the blade matrix structure. The protrusions 24 on the surface of the wear-resistant sheet 22 are distributed in a streamlined array. On the one hand, they can disturb the water flow boundary layer, reduce the direct contact area between mud and sand and the wear-resistant sheet 22, and reduce the probability of wear. On the other hand, they can change the movement trajectory of impurities in the water flow, so that they impact the wear-resistant sheet 22 at a smaller angle, further reducing the degree of wear. The wear resistance performance of the blade is improved from multiple dimensions such as material wear resistance, buffering and shock absorption, and fluid dynamics optimization.

[0039] By setting the protective component 3, the retaining strip 32 can be tightly embedded in the retaining groove 31, providing a stable installation base for the protective sleeve 33 and preventing the protective sleeve 33 from shifting or falling off under the action of water flow. The protective sleeve 33 can not only effectively absorb the impact energy of impurities in the water flow, but also adapt to the complex shape of the blade edge through its own elastic deformation, forming a complete protective wrap around the easily worn part of the blade edge. The protective sleeve 33 is tightly abutted against the surface of the wear-resistant plate 22, filling the joint gap of the blade surface protection, preventing mud and sand in the water flow from entering the gap and causing local wear to intensify, forming a continuous and complete protective system. The hollow layer 34 inside the blade 1 provides installation space for the pressure sensor 35. The pressure sensor 35 monitors the pressure changes of the blade under the impact of water flow in real time. When the wear of the blade surface causes abnormal water flow pressure distribution, the sensor transmits the data to the monitoring system. The operation and maintenance personnel can predict the degree of blade wear and potential risks in advance based on the data and take timely maintenance measures to achieve dynamic monitoring and intelligent early warning of blade wear. The protection component 3 and the pressure sensor 35 work together to strengthen the protection capability of the blade edge and build a wear monitoring mechanism to ensure the safe and stable operation of the turbine blade.

Claims

1. A wear protection structure for a water turbine blade of a hydroelectric project, comprising a blade (1) and a wear protection assembly (2), characterized in that: The surface of the blade (1) is fixedly connected with an anti-abrasion assembly (2), the anti-abrasion assembly (2) comprises an adhesive layer (21) fixedly connected to the surface of the blade (1), the surface of the adhesive layer (21) is fixedly connected with a wear-resistant sheet (22), the wear-resistant sheet (22) is made of ceramic material, the inside of the wear-resistant sheet (22) is fixedly connected with a buffer layer (23), and the surface of the wear-resistant sheet (22) is fixedly connected with a protrusion (24).

2. The anti-abrasion protection structure for the water turbine blade of a hydropower project according to claim 1, characterized in that: The surface of the edge of the blade (1) is clamped and connected with a protection assembly (3), the protection assembly (3) comprises a clamping groove (31) formed in the edge of the blade (1).

3. A wear protection structure for water turbine blades of a hydroelectric project according to claim 2, characterized in that: The inner wall of the clamping groove (31) is clamped and connected with a clamping strip (32), and the clamping strip (32) is made of stainless steel material.

4. A wear protection structure for water turbine blades of a hydroelectric project according to claim 3, characterized in that: The surface of the clamping strip (32) is fixedly connected with a protective sleeve (33), and the protective sleeve (33) is made of high-wear-resistant rubber material.

5. A wear protection structure for water turbine blades of a hydroelectric project according to claim 4, characterized in that: The surface of the protective sleeve (33) abuts against the surface of the wear-resistant sheet (22), and the inside of the blade (1) is provided with an empty layer (34).

6. A wear protection structure for water turbine blades of a hydroelectric project according to claim 1, characterized in that: The inside of the blade (1) is provided with an empty layer (34), and the inner wall of the empty layer (34) is fixedly connected with a pressure sensor (35).

7. A wear protection structure for water turbine blades of a hydroelectric project according to claim 1, characterized in that: The blade (1) has six blades in total, and the bottom ends of the six blades (1) are fixedly connected with a water turbine (4).

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