Double-layer large guide vane with surfacing

Abstract

The utility model provides a double-layer large guide vane with surfacing, which relates to the technical field of hydroelectric machinery and comprises a vane main body, a connecting surface is arranged on the surface of the vane main body, a guide vane shaft is arranged on one side of the vane main body, a shaft positioning pin groove is arranged at the top of the guide vane shaft, and a positioning hole is arranged at the top of the guide vane shaft. The blade body is provided with the circular groove and the blade positioning pin groove, the guide blade shaft penetrates into the blade body and is fixed through the positioning pin, connection is stable, fluid impact force can be effectively dispersed, and the risk that the blade body is damaged due to impact is reduced. The section of the blade body is drop-shaped, the fluid dynamics principle is met, the impact force of fluid on the guide blade can be reduced, and abrasion is reduced. The reinforcing ribs are arranged in the blade body and welded, the overall structural strength of the blade body is enhanced, the impact resistance of the blade body is improved, and deformation and damage caused by impact are reduced. The guide vane shaft is designed to be step-shaped, the front end positioning hole has specific depth and outer diameter, accurate positioning is provided for installation and fixation of the guide vane, and stable operation is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of hydroelectric machinery technology, and in particular to a double-layer large guide vane with overlay welding. Background Technology

[0002] According to Chinese Patent No. CN214836831U, this utility model belongs to the field of water turbine technology, specifically a water turbine with eccentric flat guide vanes. It includes a rotating shaft, a fixed plate, and telescopic rods. Multiple guide vanes are arranged on the outer wall of the middle section of the rotating shaft, and the fixed plate is arranged on the outer walls of both ends of the rotating shaft. A giant bearing is arranged inside the cavity of the fixed plate, and both ends of the rotating shaft are located within the inner ring of the giant bearing. Multiple telescopic rods are arranged between the outer walls of both ends of the rotating shaft and the inner ring of the giant bearing. When water flows and impacts the guide vanes, the guide vanes rotate, and the resulting power is transmitted to the equipment requiring power through the rotating shaft. When gravel in the water hits the guide vanes, the impact force is transmitted to the rotating shaft, and the telescopic rods and springs on the rotating shaft are compressed, thereby reducing the destructive force of the gravel on the guide vanes and improving their service life.

[0003] The aforementioned prior art and related documents have the following technical problems:

[0004] 1. When the guide vane operates in a high-speed fluid, it will be subjected to the impact and corrosion of the fluid, which will also cause wear and corrosion on the surface of the guide vane and the guide vane shaft, reducing its service life and performance. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a double-layered large guide vane with weld overlay.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a double-layer large guide vane with overlay welding, comprising a blade body, the surface of the blade body having a connecting surface, a guide vane shaft on one side of the blade body, a shaft positioning pin groove on the top of the guide vane shaft, and a positioning hole on the top of the guide vane shaft.

[0007] Preferably, the surface of the guide vane shaft is provided with a first weld overlay, a second weld overlay, and a third weld overlay, and the first weld overlay, the second weld overlay, and the third weld overlay are respectively heat-treated with the surface of the guide vane shaft.

[0008] Preferably, a circular groove is provided on one side of the guide vane shaft, and the circular groove is cut.

[0009] Preferably, a positioning pin strip is provided on one side of the shaft positioning pin groove, and the positioning pin strip is engaged with the shaft positioning pin groove.

[0010] Preferably, the surface of the blade body is provided with a cut edge, and the blade body and the cut edge are connected by bolts.

[0011] Preferably, the guide vane shaft has a blade positioning pin groove inside, and the blade positioning pin groove is positioned and connected to the guide vane shaft.

[0012] Preferably, a reinforcing rib is provided on one side of the blade body, and the reinforcing rib is welded to the blade body.

[0013] Beneficial effects

[0014] In this invention, the blade body features a circular groove and a blade positioning pin groove. The guide vane shaft passes through and is fixed by the positioning pin, ensuring a stable connection and effectively dispersing fluid impact force, reducing the risk of impact damage to the blade body. The blade body has a teardrop-shaped cross-section, conforming to fluid dynamics principles, which reduces the impact force of the fluid on the guide vane and minimizes wear. Reinforcing ribs are welded inside the blade body, enhancing its overall structural strength, improving its impact resistance, and reducing deformation and damage caused by impact. The parallelism tolerance between the connecting surface and the cut edge of the blade body and the guide vane shaft is only 0.1mm, ensuring the stability and smoothness of the guide vane during operation and reducing additional impact and wear caused by fluid turbulence. The guide vane shaft is designed in a stepped shape, with a specific depth and outer diameter for the front positioning hole, providing precise positioning for the installation and fixation of the guide vane and ensuring stable operation.

[0015] In this invention, a stepped weld overlay is applied to the surface of the guide vane shaft, followed by heat treatment to achieve a smooth, seamless surface. The weld overlay enhances the wear resistance and corrosion resistance of the guide vane shaft surface, and the heat treatment further optimizes its performance, extending the service life of the guide vane shaft. After heat treatment and cooling, an anti-corrosion coating is applied, followed by an easily removable coating. The anti-corrosion coating effectively resists fluid corrosion, while the easily removable coating can be conveniently removed when necessary, facilitating subsequent maintenance and treatment, further protecting the outer surface of the guide vane and improving its corrosion resistance. Attached Figure Description

[0016] Figure 1 This is an isometric view of the present invention;

[0017] Figure 2 This is a top view of the present invention;

[0018] Figure 3 This is a diagram of the internal structure of the present invention;

[0019] Figure 4 This is a cross-sectional view of the present invention.

[0020] Legend:

[0021] 1. Blade body; 2. Guide vane shaft; 3. First weld overlay; 4. Second weld overlay; 5. Third weld overlay; 6. Positioning hole; 7. Shaft positioning pin groove; 8. Positioning pin strip; 9. Connecting surface; 10. Cut edge; 11. Circular groove; 12. Reinforcing rib; 13. Blade positioning pin groove. Detailed Implementation

[0022] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0023] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1:

[0025] Reference Figure 1-4 A double-layered large guide vane with weld overlay includes a blade body 1. The surface of the blade body 1 is provided with a connecting surface 9. A guide vane shaft 2 is provided on one side of the blade body 1. The surface of the guide vane shaft 2 is provided with a first weld overlay 3, a second weld overlay 4, and a third weld overlay 5. The first weld overlay 3, the second weld overlay 4, and the third weld overlay 5 are respectively heat-treated with the surface of the guide vane shaft 2. A circular groove 11 is provided on one side of the guide vane shaft 2. The circular groove 11 is cut. A shaft positioning pin groove 7 is provided on the top of the guide vane shaft 2. A positioning pin strip 8 is provided on one side of the shaft positioning pin groove 7. The positioning pin strip 8 is snapped into the shaft positioning pin groove 7. A chamfered edge 10 is provided on the surface of the blade body 1. The blade body 1 is bolted to the chamfered edge 10. A blade positioning pin groove 13 is provided inside the guide vane shaft 2. The blade positioning pin groove 13 is positioned and connected to the guide vane shaft 2. A reinforcing rib 12 is provided on one side of the blade body 1. The reinforcing rib 12 is welded to the blade body 1. A positioning hole 6 is provided on the top of the guide vane shaft 2.

[0026] The blade body 1 features a circular groove 11 and a blade positioning pin groove 13. The guide vane shaft 2 is inserted and fixed by the positioning pin, ensuring a stable connection. This effectively disperses the fluid impact force, reducing the risk of impact damage to the blade body 1. The blade body 1 has a teardrop-shaped cross-section, conforming to fluid dynamics principles and further reducing the impact force of the fluid on the guide vane, thus minimizing wear. Reinforcing ribs 12 are welded inside the blade body 1, enhancing its overall structural strength and impact resistance, reducing deformation and damage caused by impact. The parallelism tolerance between the connecting surface 9 and the cut edge 10 on the surface of the blade body 1 and the guide vane shaft 2 is only 0.1mm, ensuring the stability and smoothness of the guide vane during operation and reducing additional impact and wear caused by fluid turbulence. The guide vane shaft 2 is designed in a stepped shape, with a specific depth and outer diameter for the front positioning hole, providing precise positioning for the installation and fixation of the guide vane and ensuring stable operation. The surface of the guide vane shaft 2 is provided with a first weld overlay 3, a second weld overlay 4, and a third weld overlay 5. Heat treatment after the stepped surface weld overlays makes the surface smooth and seamless, enhancing the wear resistance and corrosion resistance of the guide vane shaft 2 surface. Heat treatment further optimizes its performance and extends the service life of the guide vane shaft 2. After heat treatment and cooling, an anti-corrosion coating is applied, followed by an easily removable coating. The anti-corrosion coating effectively resists fluid corrosion, while the easily removable coating can be easily removed when necessary, facilitating subsequent maintenance and treatment, further protecting the outer surface of the guide vane and improving its corrosion resistance. Specific Implementation Example 2:

[0028] Reference Figure 1-4 Temperature and corrosion sensors are embedded inside the blade body 1 to monitor parameters such as stress, temperature, and corrosion level of the guide vane in real time during operation. Data is transmitted to the control system via a wireless transmission module. Once an anomaly is detected, timely adjustments or repairs are taken, enabling intelligent monitoring and early warning of the guide vane's operating status and ensuring the safe and stable operation of the equipment.

[0029] In summary:

[0030] The blade body 1 features a circular groove 11 and a blade positioning pin groove 13. The guide vane shaft 2 is inserted and fixed by the positioning pin, ensuring a stable connection. This design effectively disperses the fluid impact force, reducing the risk of impact damage to the blade body 1. The blade body 1 has a teardrop-shaped cross-section, conforming to fluid dynamics principles and reducing the impact force of the fluid on the guide vane, thus minimizing wear. Reinforcing ribs 12 are welded inside the blade body 1, enhancing its overall structural strength and impact resistance, reducing deformation and damage caused by impact. The parallelism tolerance between the connecting surface 9 and the cut edge 10 on the surface of the blade body 1 and the guide vane shaft 2 is only 0.1mm, ensuring the stability and smoothness of the guide vane during operation and reducing additional impact and wear caused by fluid turbulence. The guide vane shaft 2 is designed in a stepped shape, with a specific depth and outer diameter for the front positioning hole, providing precise positioning for the installation and fixation of the guide vane and ensuring stable operation.

[0031] The guide vane shaft 2 is constructed with a first weld overlay 3, a second weld overlay 4, and a third weld overlay 5, respectively. The stepped surface is then heat-treated to achieve a smooth, seamless surface. This weld overlay enhances the wear resistance and corrosion resistance of the guide vane shaft 2 surface, and the heat treatment further optimizes its performance, extending the service life of the guide vane shaft 2. After heat treatment and cooling, an anti-corrosion coating is applied, followed by an easily removable coating. The anti-corrosion coating effectively resists fluid corrosion, while the easily removable coating can be conveniently removed when necessary, facilitating subsequent maintenance and treatment, further protecting the outer surface of the guide vane and improving its corrosion resistance.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A double-layered large guide vane with weld overlay, comprising a blade body (1), characterized in that: The blade body (1) has a connecting surface (9) on its surface, a guide vane shaft (2) is provided on one side of the blade body (1), a shaft positioning pin groove (7) is provided on the top of the guide vane shaft (2), and a positioning hole (6) is provided on the top of the guide vane shaft (2).

2. A double-layered large guide vane with weld overlay as described in claim 1, characterized in that: The surface of the guide vane shaft (2) is provided with a first weld (3), a second weld (4) and a third weld (5), and the first weld (3), the second weld (4) and the third weld (5) are respectively heat-treated with the surface of the guide vane shaft (2).

3. A double-layered large guide vane with weld overlay as described in claim 1, characterized in that: The guide vane shaft (2) has a circular groove (11) on one side, and the circular groove (11) is cut.

4. A double-layered large guide vane with weld overlay as described in claim 1, characterized in that: The shaft positioning pin groove (7) has a positioning pin strip (8) on one side, and the positioning pin strip (8) is engaged with the shaft positioning pin groove (7).

5. A double-layered large guide vane with weld overlay as described in claim 1, characterized in that: The blade body (1) has a cut edge (10) on its surface, and the blade body (1) and the cut edge (10) are connected by bolts.

6. A double-layered large guide vane with weld overlay as described in claim 1, characterized in that: The guide vane shaft (2) is provided with a blade positioning pin groove (13) inside, and the blade positioning pin groove (13) is positioned and connected to the guide vane shaft (2).

7. A double-layer large guide vane with weld overlay as described in claim 1, characterized in that: The blade body (1) has a reinforcing rib (12) on one side, and the reinforcing rib (12) is welded to the blade body (1).

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