Intelligent comprehensive protection device for fan

Abstract

The application relates to the technical field of fans and discloses a fan intelligent comprehensive protection device, which comprises a fan intelligent comprehensive protection device base, the top of the fan intelligent comprehensive protection device base is fixedly connected with a first vibration buffering mechanism, the top of the first vibration buffering mechanism is fixedly connected with a connecting plate, the center of the fan intelligent comprehensive protection device base is provided with a groove, the inside of the groove is provided with a second vibration buffering mechanism, the second vibration buffering mechanism comprises a hydraulic cylinder and a hydraulic cylinder top rod, the bottom of the hydraulic cylinder top rod is fixedly connected to the fan intelligent comprehensive protection device base, the top of the hydraulic cylinder top rod is movably connected with the hydraulic cylinder, the top surface of the hydraulic cylinder is fixedly connected with a connecting plate, and the connecting position of the hydraulic cylinder and the hydraulic cylinder top rod is provided with a sealing disc. Through the first and second vibration buffering mechanisms, the vibration resistance and stability of the fan can be greatly improved, the fan can continuously and effectively operate, and the first vibration buffering mechanism is provided with a ventilation groove, so that the vibration buffering and impact resistance of the first vibration buffering mechanism can be improved.

Description

Technical Field

[0001] This invention relates to the field of wind turbine technology, specifically to an intelligent integrated protection device for wind turbines. Background Technology

[0002] Wind energy, as a clean and renewable energy source, is receiving increasing attention from countries around the world. A wind turbine typically consists of a wind rotor, generator (including components), directional control (tail fin), tower, speed limiting safety mechanism, and energy storage device. It is commonly used in regions with abundant wind energy. The working principle of a wind turbine is relatively simple: the wind rotor rotates under the influence of wind, converting the kinetic energy of the wind into the mechanical energy of the rotor shaft; the generator then rotates and generates electricity, driven by the rotor shaft.

[0003] Application number CN202210155361.8 relates to the field of wind turbine technology and discloses a wind turbine overspeed protection device, including an installation assembly comprising a base, an installation pipe, a fixing pipe, a receiving ring, an installation component, a limiting component, a locking component, and a tensioning component. The installation pipe is fixed to the top of the base, the fixing pipe is fixed to the top of the installation pipe, the receiving ring is fixed to the inner wall of the installation pipe, the installation component is disposed on the top of the receiving ring, the limiting component is located on the top of both sides of the fixing pipe, the locking component is disposed on the limiting component, and the tensioning component is fixed inside the installation pipe. The cooperation between the installation assembly and the connecting assembly makes the disassembly and assembly of the overspeed protection device more efficient and more stable during installation, preventing it from falling off after prolonged use.

[0004] Current intelligent integrated protection devices for wind turbines are not adequate in addressing vibration reduction, and lack devices that can effectively reduce vibration and improve stability. Summary of the Invention

[0005] In view of the poor vibration reduction effect of existing technologies, the present invention provides an intelligent integrated protection device for wind turbines, which has the advantage of good vibration reduction effect.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A wind turbine intelligent integrated protection device includes a base for the wind turbine intelligent integrated protection device. The base has a cuboid structure. A first damping mechanism is fixedly connected to the top of the base. A connecting plate is fixedly connected to the top of the first damping mechanism. A groove is provided in the center of the base. A second damping mechanism is provided inside the groove. The second damping mechanism includes a hydraulic cylinder and a hydraulic cylinder push rod. The bottom of the hydraulic cylinder push rod is fixedly connected to the base. A hydraulic cylinder is movably connected to the top of the hydraulic cylinder push rod. A connecting plate is fixedly connected to the top surface of the hydraulic cylinder. A sealing plate is provided at the connection between the hydraulic cylinder and the hydraulic cylinder push rod.

[0007] Preferably, the first damping mechanism includes a first damping mechanism housing, a mounting plate is provided at the center of the first damping mechanism housing, a threaded rod is fixedly connected to the bottom of the mounting plate, a pressure sleeve is movably connected to the bottom of the threaded rod, and a plurality of limiting grooves are provided on the pressure sleeve.

[0008] Preferably, a second spring is fixedly connected to the bottom of the threaded rod. The height of the second spring is lower than that of the limiting groove. A first spring is arranged around the pressure sleeve. The toughness, diameter, and elasticity of the first spring are much greater than those of the second spring. The main function of the first spring is to contract to absorb pressure after being subjected to pressure, thereby reducing vibration. The main function of the second spring is to cooperate with the threaded rod to reduce the impact force on the bottom after being subjected to pressure, so as to avoid excessive impact force on the threaded rod, which could damage the bottom or even cause displacement after impact. Displacement will generate a large torque on the rectangular protrusion on the threaded rod. Excessive torque or too many displacements will cause permanent damage to the threaded rod and seriously affect the service life of the first damping mechanism.

[0009] Preferably, the first damping mechanism is internally provided with two threaded rods, a first spring, a pressure sleeve, a limiting groove, and a second spring. The bottom of the mounting plate is fixedly connected to two threaded rods. This design can protect the first damping mechanism to a greater extent, divide the force into two parallel spring forces, reduce the number of spring extensions and the length of the spring, extend the time for the spring to reach metal fatigue, and thus extend the service life of the first damping mechanism.

[0010] Preferably, four of the first vibration damping mechanisms are provided on the base of the intelligent integrated protection device for the wind turbine. The first vibration damping mechanisms are located at the four corners of the base, and the placement direction of the first vibration damping mechanisms is inclined at 45 degrees or 135 degrees. The placement positions of the first vibration damping mechanisms are symmetrical around the circumference. This can distribute the force on the mounting plate more evenly to the four first vibration damping mechanisms. With the force on the first vibration damping mechanisms being consistent, the compression length will be as consistent as possible. In this way, the first vibration damping mechanisms will move up and down smoothly, and the stability of the intelligent integrated protection device for the wind turbine is improved.

[0011] Preferably, the first damping mechanism is shaped like a cylinder with two sides and a cuboid with a groove in the center.

[0012] Preferably, a sponge pad is fixedly connected to the bottom surface of the threaded rod, the diameter of the second spring is larger than the diameter of the sponge pad, the second spring is disposed around the periphery of the sponge pad, and a rectangular protrusion is fixedly connected to the side of the threaded rod. The height of the rectangular protrusion is equal to one-third of the height of the limiting groove, and the width of the rectangular protrusion is equal to the width of the limiting groove. When the rectangular protrusion is engaged with the limiting groove, the amount of protrusion is equal to or greater than the amount of non-protrusion. The function of the limiting groove is to restrict the threaded rod to move downward after being subjected to force, so that it can only move in the vertical direction of the pressure sleeve and will not be displaced.

[0013] Preferably, a venting groove is provided on the side of the first damping mechanism near the limiting groove. The venting groove is rectangular at the top and semi-circular at the bottom. The main function of the venting groove is that when the first damping mechanism is subjected to force, the mounting plate moves downward and the first spring is compressed downward. Since the distance between the mounting plate and the outer shell of the first damping mechanism is very close, the air inside the first damping mechanism is compressed instantaneously. With few venting points, the mounting plate will become stiff and unable to move downward, thus failing to achieve a damping effect. With the venting groove, the compressed air will be discharged from the venting groove without affecting the damping effect. At the same time, the shape of the venting groove, with a rectangular top and a semi-circular bottom, allows for greater force on the bottom and better stability of the semi-circular groove opening, preventing groove expansion. The rectangular top can limit the speed of air entering and exiting, which can improve the damping and impact resistance. Beneficial effects

[0014] 1. In this intelligent integrated protection device for the wind turbine, a venting groove is provided on the side of the first damping mechanism near the limiting groove. The venting groove is rectangular at the top and semi-circular at the bottom. The main function of the venting groove is that when the first damping mechanism is subjected to force, the mounting plate moves downward and the first spring is compressed downward. Since the distance between the mounting plate and the outer shell of the first damping mechanism is very close, the air inside the first damping mechanism is compressed instantaneously. With few venting points, the mounting plate will become stiff and unable to move downward, thus failing to achieve a damping effect. With the venting groove, the compressed air will be discharged from the venting groove without affecting the damping effect. At the same time, the shape of the venting groove, with a rectangular top and a semi-circular bottom, provides better stability for the lower part of the groove due to the greater force it receives, preventing the groove from expanding. The rectangular top can limit the speed of air entering and leaving the groove, which can improve the damping and impact resistance.

[0015] 2. This intelligent integrated protection device for the fan has a second spring fixedly connected to the bottom of the threaded rod. The height of the second spring is lower than the limit groove. A first spring is arranged around the pressure sleeve. The toughness, diameter, and elasticity of the first spring are much greater than those of the second spring. The main function of the first spring is to contract to absorb pressure after being subjected to pressure, thereby reducing vibration. The main function of the second spring is to cooperate with the fan to reduce the impact force on the bottom after being subjected to pressure, so as to avoid excessive impact force, damage to the bottom, or even displacement after impact. Displacement will generate a large torque. Excessive torque or too many displacements will cause permanent damage and seriously affect the service life of the fan.

[0016] 3. In this intelligent integrated protection device for wind turbines, four first vibration damping mechanisms are installed on the base of the device. These mechanisms are positioned at the four corners of the base and tilted at 45 or 135 degrees. The placement of these mechanisms is symmetrical, which distributes the force on the mounting plate more evenly among the four mechanisms. With consistent force on each mechanism, the compression length is made as consistent as possible, resulting in smooth up-and-down movement and improving the stability of the intelligent integrated protection device for wind turbines.

[0017] 4. In this intelligent integrated protection device for the fan, a sponge pad is fixedly connected to the bottom surface of the threaded rod. The diameter of the second spring is larger than the diameter of the sponge pad, and the second spring is set around the periphery of the sponge pad. A rectangular protrusion is fixedly connected to the side of the threaded rod. The height of the rectangular protrusion is equal to one-third of the height of the limiting groove, and the width of the rectangular protrusion is equal to the width of the limiting groove. When the rectangular protrusion is engaged with the limiting groove, the amount of protrusion is equal to or greater than the amount of non-protrusion. The function of the limiting groove is to restrict the threaded rod to move downward under force, so that it can only move in the vertical direction of the pressure sleeve and will not be displaced. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an intelligent integrated protection device for wind turbines proposed in this invention; Figure 2 This is a schematic diagram of the first vibration damping mechanism of an intelligent integrated protection device for wind turbines proposed in this invention; Figure 3 This is a schematic diagram of the internal structure of the first vibration damping mechanism of the intelligent integrated protection device for wind turbines proposed in this invention; Figure 4 This is a schematic diagram of the internal structure of the first vibration damping mechanism of the intelligent integrated protection device for wind turbines proposed in this invention; Figure 5 This is a schematic diagram of the ventilation slot of an intelligent integrated protection device for wind turbines proposed in this invention; Figure 6This is a schematic diagram of the internal threaded rod structure of the first damping mechanism of the intelligent integrated protection device for wind turbines proposed in this invention.

[0019] In the diagram: 1. Base of the intelligent integrated protection device for the wind turbine; 2. First vibration damping mechanism; 3. Connecting plate; 4. Hydraulic cylinder; 5. Hydraulic cylinder top rod; 6. Housing of the first vibration damping mechanism; 7. Mounting plate; 8. Threaded rod; 9. First spring; 10. Pressure sleeve; 11. Limiting groove; 12. Second spring; 13. Ventilation groove; 14. Rectangular protrusion; 15. Sponge pad. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0021] Please see Figure 1-6 A wind turbine intelligent integrated protection device includes a wind turbine intelligent integrated protection device base 1. The wind turbine intelligent integrated protection device base 1 has a cuboid structure. A first damping mechanism 2 is fixedly connected to the top of the wind turbine intelligent integrated protection device base 1. A connecting plate 3 is fixedly connected to the top of the first damping mechanism 2. A groove is provided in the center of the wind turbine intelligent integrated protection device base 1. A second damping mechanism is provided inside the groove. The second damping mechanism includes a hydraulic cylinder 4 and a hydraulic cylinder top rod 5. The bottom of the hydraulic cylinder top rod 5 is fixedly connected to the wind turbine intelligent integrated protection device base 1. The top of the hydraulic cylinder top rod 5 is movably connected to the hydraulic cylinder 4. The connecting plate 3 is fixedly connected to the top surface of the hydraulic cylinder 4. A sealing plate is provided at the connection between the hydraulic cylinder 4 and the hydraulic cylinder top rod 5.

[0022] A venting groove 13 is provided on the side of the first damping mechanism 2 near the limiting groove 11. The venting groove 13 is rectangular at the top and semi-circular at the bottom. The main function of the venting groove 13 is that when the first damping mechanism is subjected to force, the mounting plate 7 moves downward and the first spring 9 is compressed downward. Since the mounting plate 7 is very close to the outer shell 6 of the first damping mechanism, the air inside the first damping mechanism 2 will be compressed instantaneously. With few venting points, the mounting plate will become stiff and unable to move downward, thus failing to achieve a damping effect. With the venting groove 13, the compressed air will be discharged from the venting groove 13 without affecting the damping effect. At the same time, the shape of the venting groove 13, with a rectangular top and a semi-circular bottom, allows for greater force on the bottom and better stability of the semi-circular groove opening, preventing groove expansion. The rectangular top can limit the speed of air in and out, which can improve the damping and impact resistance. Example

[0023] Please see Figure 1-6 A wind turbine intelligent integrated protection device, preferably, the first damping mechanism 2 includes a first damping mechanism housing 6, a mounting plate 7 is provided at the center of the first damping mechanism housing 6, a threaded rod 8 is fixedly connected to the bottom of the mounting plate 7, a pressure sleeve 10 is movably connected to the bottom of the threaded rod 8, and a plurality of limiting grooves 11 are provided on the pressure sleeve 10.

[0024] A second spring 12 is fixedly connected to the bottom of the threaded rod 8. The height of the second spring 12 is lower than that of the limiting groove 11. A first spring 9 is arranged around the pressure sleeve 10. The toughness, diameter, and elasticity of the first spring 9 are much greater than those of the second spring 12. The main function of the first spring 9 is to contract to absorb pressure after being subjected to pressure, thereby reducing vibration. The main function of the second spring 12 is to cooperate with 15 on the threaded rod 8 to reduce the impact force between 8 and the bottom of 2 after being subjected to pressure, so as to avoid excessive impact force on the threaded rod 8, which could damage the bottom of 2 or even cause displacement after impact. Displacement will generate a large torque on the rectangular protrusion 14 on the threaded rod 8. Excessive torque or too many displacements will cause permanent damage to the threaded rod 8, seriously affecting the service life of the first damping mechanism 2.

[0025] The first damping mechanism 2 is internally equipped with two threaded rods 8, a first spring 9, a pressure sleeve 10, a limiting groove 11, and a second spring 12. The bottom of the mounting plate 7 is fixedly connected to the two threaded rods 8. This design can protect the first damping mechanism 2 to the greatest extent, divide the force into two parallel spring forces, reduce the number of spring extensions and the length of the spring, extend the time for the spring to reach metal fatigue, and thus extend the service life of the first damping mechanism 2.

[0026] Four first vibration damping mechanisms 2 are installed on the base 1 of the intelligent integrated protection device for the wind turbine. The first vibration damping mechanisms 2 are located at the four corners of the base 1, and the placement direction of the first vibration damping mechanisms 2 is tilted at 45 degrees or 135 degrees. The placement positions of the first vibration damping mechanisms 2 are symmetrical around the circumference. This can distribute the force on the mounting plate 7 more evenly to the four first vibration damping mechanisms 2. The force on the first vibration damping mechanisms 2 is consistent, and the compression length will be as consistent as possible. In this way, the first vibration damping mechanisms 2 will move up and down smoothly, and the stability of the intelligent integrated protection device for the wind turbine is improved.

[0027] The first damping mechanism 2 is shaped like half of a cylinder on both sides and a cuboid with a groove in the center.

[0028] A sponge pad 15 is fixedly connected to the bottom surface of the threaded rod 8. The diameter of the second spring 12 is larger than the diameter of the sponge pad 15. The second spring 12 is set around the periphery of the sponge pad 15. A rectangular protrusion 14 is fixedly connected to the side of the threaded rod 8. The height of the rectangular protrusion 14 is equal to one-third of the height of the limiting groove 11. The width of the rectangular protrusion 14 is equal to the width of the limiting groove 11. When the rectangular protrusion 14 is engaged with the limiting groove 11, the amount of protrusion is equal to or greater than the amount of non-protrusion. The function of the limiting groove 11 is to restrict the threaded rod 8 from moving downward after being subjected to force, so that it can only move in the vertical direction of the pressure sleeve 10 and will not be displaced.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind turbine intelligent integrated protection device, comprising a wind turbine intelligent integrated protection device base (1), characterized in that, The base (1) of the intelligent integrated protection device for the wind turbine has a rectangular structure. The top of the base (1) is fixedly connected to a first damping mechanism (2). The top of the first damping mechanism (2) is fixedly connected to a connecting plate (3). The center of the base (1) is provided with a groove. The groove is provided with a second damping mechanism. The second damping mechanism includes a hydraulic cylinder (4) and a hydraulic cylinder top rod (5). The bottom of the hydraulic cylinder top rod (5) is fixedly connected to the base (1) of the intelligent integrated protection device for the wind turbine. The top of the hydraulic cylinder top rod (5) is movably connected to the hydraulic cylinder (4). The top surface of the hydraulic cylinder (4) is fixedly connected to the connecting plate (3). A sealing plate is provided at the connection between the hydraulic cylinder (4) and the hydraulic cylinder top rod (5). The first damping mechanism (2) includes a first damping mechanism housing (6), a mounting plate (7) is provided at the center of the first damping mechanism housing (6), a threaded rod (8) is fixedly connected to the bottom of the mounting plate (7), a pressure sleeve (10) is movably connected to the bottom of the threaded rod (8), and a plurality of limiting grooves (11) are provided on the pressure sleeve (10). The bottom of the threaded rod (8) is fixedly connected to a second spring (12), the height of the second spring (12) is lower than the limiting groove (11), and a first spring (9) is provided around the pressure sleeve (10). The toughness, diameter and elasticity of the first spring (9) are much greater than those of the second spring (12). The first damping mechanism (2) is equipped with two threaded rods (8), a first spring (9), a pressure sleeve (10), a limiting groove (11), and a second spring (12). The bottom of the mounting plate (7) is fixedly connected to two threaded rods (8).

2. The intelligent integrated protection device for wind turbines according to claim 1, characterized in that, Four of the first vibration damping mechanisms (2) are provided on the base (1) of the wind turbine intelligent integrated protection device. The first vibration damping mechanisms (2) are provided on the four corners of the base (1) of the wind turbine intelligent integrated protection device, and the placement direction of the first vibration damping mechanism (2) is tilted at 45 degrees or 135 degrees. The placement position of the first vibration damping mechanism (2) is circumferentially symmetrical.

3. The intelligent integrated protection device for wind turbines according to claim 2, characterized in that, The first damping mechanism (2) is shaped like half of a cylinder on both sides and a cuboid with a groove in the center.

4. The intelligent integrated protection device for wind turbines according to claim 3, characterized in that, A sponge pad (15) is fixedly connected to the bottom surface of the threaded rod (8). The diameter of the second spring (12) is larger than the diameter of the sponge pad (15). The second spring (12) is set around the sponge pad (15). A rectangular protrusion (14) is fixedly connected to the side of the threaded rod (8). The height of the rectangular protrusion (14) is equal to one-third of the height of the limiting groove (11). The width of the rectangular protrusion (14) is equal to the width of the limiting groove (11). When the rectangular protrusion (14) is engaged with the limiting groove (11), the amount of protrusion is equal to or greater than the amount of non-protrusion.

5. The intelligent integrated protection device for wind turbines according to claim 4, characterized in that, The first damping mechanism (2) has a ventilation groove (13) on its side near the limiting groove (11). The ventilation groove (13) is rectangular at the top and semi-circular at the bottom.

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