Lightning protection device for a wind turbine

Abstract

The application relates to the field of wind power generation technology, in particular to a lightning protection device for a wind generating set, which comprises a flash needle, a needle seat, a cavity disc, a fixing mechanism and two nail clamping mechanisms, the fixing mechanism comprises a fixed disc and a plurality of disc pins, the fixed disc is movably arranged on the outer side of the flash needle close to one end of the needle seat, the plurality of disc pins are uniformly arranged on the fixed disc, one end of the disc pin is connected with the fixed disc, and the other end is connected with the needle seat; the two nail clamping mechanisms are oppositely arranged on the side surface of the needle seat. The fixing mechanism is arranged to realize the connection stability of the needle seat and the flash needle, the nail clamping mechanism is arranged to adhere to the upper end wall of the lightning protection part required by the generating assembly, and assembly positioning is facilitated. In use, firstly, the sleeve ring is connected with the nail disc, then the fixing screw is rotated, the bottom end screw rod of the fixing screw is lowered until abutting against the upper end wall of the lightning protection part required by the generating assembly, and the lightning protection part required by the generating assembly is positioned in combination with the nail disc, the sleeve ring and the cover ring.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, specifically to a lightning protection device for wind turbine generator sets. Background Technology

[0002] A wind turbine generator set includes a wind rotor and a generator. The wind rotor consists of blades, a hub, and reinforcement components. It has functions such as generating electricity by rotating the blades under wind power and rotating the generator head. The wind power generation power supply consists of a wind turbine generator set, a tower supporting the generator set, a battery charging controller, an inverter, a load unloader, a grid connection controller, and a battery bank. When in use, due to its high location, it often requires the use of lightning protection devices.

[0003] Existing lightning protection devices have defects: existing lightning protection devices are not easy to adjust their fixing structure according to the assembly environment, and the fixing structure cannot be well adapted and positioned with the wind power generation part structure, resulting in poor convenience of use; existing lightning protection devices cannot be disassembled at both ends of the main body, making cleaning and maintenance inconvenient, and the stability after assembly is also poor. Summary of the Invention

[0004] To address the issues of inconvenience, cross-contamination, and poor stability of existing barrier devices, this invention provides a lightning protection device for wind turbine generator sets.

[0005] This invention is achieved through the following technical solution: A lightning protection device for wind turbine generator sets includes a lightning rod, a rod base, a cavity plate, a fixing mechanism, and two nailing mechanisms. The lightning rod is made of metal. The rod base is disposed at the bottom of the lightning rod. The cavity plate is connected to the rod base. The fixing mechanism includes a fixed plate and multiple pins. The fixed plate is movably disposed on the outside of the lightning rod near the rod base. The multiple pins are evenly disposed on the fixed plate. One end of each pin is connected to the fixed plate, and the other end is connected to the rod base. Two of the aforementioned nailing mechanisms are disposed opposite to each other on the side of the needle holder. Each nailing mechanism includes two nail discs, multiple collars, multiple cover rings, and multiple fixing screws. The two nail discs are disposed opposite to each other at intervals. The collars, cover rings, and fixing screws correspond one-to-one. The ends of the collars are respectively connected to the two nail discs. The cover rings are connected between the two nail discs. The collars and cover rings form a circular fixing ring. The fixing screws are disposed on the cover rings.

[0006] Preferably, the needle holder is provided with a seat screw hole, and the bottom of the flash needle is threadedly connected to the seat screw hole.

[0007] Preferably, the flashing needle has multiple seat holes at one end near the seat screw hole; during assembly, the disc pin is connected to the needle seat through the seat holes.

[0008] Preferably, the needle holder has a seat cavity inside, and the cavity plate is rotatably disposed inside the seat cavity.

[0009] Preferably, the cavity disk is annular in shape.

[0010] Preferably, the cavity plate has a plate opening for inserting an external binding member.

[0011] Preferably, the fixed disk is annular in shape.

[0012] Preferably, the nail tray is provided with multiple tray grooves and multiple fixing screws, each tray groove corresponds to a collar, each fixing screw corresponds to a tray groove, and the end of the collar is engaged with the nail tray through the tray groove; the fixing screws are used to fasten the collar and the nail tray.

[0013] Preferably, the needle holder is further provided with a plurality of ground wire seats arranged in a ring around the center of the needle holder, and the middle part of the ground wire seats is made of metal.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention discloses a lightning arrester for wind turbine generator sets. By setting a fixing mechanism, the fixed plate is moved to the bottom part of the lightning rod, and at the same time, the pin that moves down with the fixed plate passes through the seat hole, so that the seat hole and the pin are engaged, and the fixed plate and the lightning rod are engaged, thereby achieving a stable connection between the lightning rod and the lightning rod.

[0015] This invention utilizes a nailing mechanism to fit the upper wall of the lightning protection section of the power generation assembly, facilitating assembly and positioning. In use, first connect the collar to the nail plate, then rotate the fixing screw to lower the bottom screw until it abuts against the upper wall of the lightning protection section of the power generation assembly, thus positioning the lightning protection section of the power generation assembly in conjunction with the nail plate, collar, and cover ring.

[0016] Furthermore, the seat cavity and the cavity plate move with each other. By rotating the cavity plate, the position of the disk joint on the end wall of the cavity plate is changed. Then, steel wires and other binding materials are threaded through the adjusted disk joint end to bind the disk joint, cavity plate, needle seat and wind power generation components together, thereby improving the firmness and stability of the main body assembly.

[0017] Furthermore, the middle part of the grounding base is made of metal, which facilitates the electrical connection between the top of the grounding base and the pin base, while the bottom of the grounding base can be connected to a grounding wire to facilitate lightning protection and electrical conduction. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a lightning protection device for a wind turbine generator set according to the present invention; Figure 2 This is a three-dimensional structural diagram of the cavity disc and needle seat of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the needle seat of the present invention; Figure 4 This is a three-dimensional structural diagram of the nailing mechanism of the present invention.

[0019] In the diagram, 1. Flashing needle; 2. Needle seat; 3. Seat hole; 4. Seat screw hole; 5. Seat cavity; 6. Cavity plate; 7. Plate jaw; 8. Grounding seat; 9. Fixing mechanism; 10. Fixed plate; 11. Plate pin; 12. Nail clamping mechanism; 13. Nail plate; 14. Plate groove; 15. Collar; 16. Fixing screw; 17. Cover ring; 18. Fixing screw. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to specific embodiments. These descriptions are for explanation purposes only and are not intended to limit the scope of the invention.

[0021] This invention discloses a lightning protection device for wind turbine generator sets, with reference to... Figure 1 , 2 It includes a flashing needle 1, a needle base 2, a cavity plate 6, a fixing mechanism 9, and two nailing mechanisms 12. The needle base 2 is provided with a seat screw hole 4, and the bottom of the flashing needle 1 is threadedly connected to the seat screw hole 4.

[0022] Reference Figure 3 The cavity plate 6 is connected to the needle holder 2. The needle holder 2 has a seat cavity 5 inside, and the cavity plate 6 is rotatably disposed inside the seat cavity 5. The cavity plate 6 is annular in shape. The cavity plate 6 has a plate mouth 7, which is used to thread external binding components.

[0023] The fixing mechanism includes a fixed plate 10 and multiple pins 11. The fixed plate 10 is movably disposed on the outer side of the flashing needle 1 near the needle seat 2. The multiple pins 11 are evenly disposed on the fixed plate 10. One end of the pin 11 is connected to the fixed plate 10, and the other end is connected to the needle seat 2. In this embodiment, the fixed plate 10 is annular, and there are six pins 11. The flashing needle 1 is provided with multiple seat holes 3 near the seat screw hole 4. During assembly, the pins 11 are connected to the needle seat 2 through the seat holes 3.

[0024] Reference Figure 4 Two nailing mechanisms 12 are positioned opposite each other on the side of the pin holder 2. Each nailing mechanism 12 includes two nail discs 13, multiple collars 15, multiple cover rings 17, and multiple fixing screws 18. In this embodiment, three collars 15 are provided. The two nail discs 13 are positioned opposite each other at intervals. The collars 15, cover rings 17, and fixing screws 18 correspond one-to-one. The ends of the collars 15 are connected to the two nail discs 13 respectively, and the cover rings 17 are connected between the two nail discs 13. The collars 15 and cover rings 17 form a circular fixing ring, and the fixing screws 18 are provided on the cover rings 17. The cover rings 17 are fitted and attached to the upper wall of the lightning protection part of the power generation component through the arc shape of their bottom.

[0025] The nail tray 13 is provided with multiple slots 14 and multiple fixing screws 16. The slots 14 correspond one-to-one with the collars 15, and the fixing screws 16 correspond one-to-one with the slots 14. The end of the collar 15 is engaged with the nail tray 13 through the slots 14. The fixing screws 16 are used to fasten the collars 15 and the nail tray 13.

[0026] The needle holder 2 is also provided with multiple ground wire seats 8 arranged in a ring around the center of the needle holder 2. In this embodiment, there are three ground wire seats, and the middle part of the ground wire seat 8 is made of metal.

[0027] The working principle of the lightning protection device for wind turbine generator set of the present invention is as follows: the metal material of the lightning rod 1 facilitates the conduction of lightning.

[0028] The bottom of the flashing needle 1 is threadedly connected to the needle base 2 through the seat screw hole 4, which facilitates the assembly of the flashing needle 1 and the needle base 2 and also facilitates disassembly. After disassembly, it is convenient to clean and maintain the flashing needle 1 and the needle base 2, ensuring that the body is in good condition for lightning protection. At the same time, the fixed plate 10 and the flashing needle 1 move to move to the bottom part of the flashing needle 1, and the disc pin 11, which moves down synchronously with the fixed plate 10, passes into the seat hole 3, so that the seat hole 3 and the disc pin 11 are engaged, and the fixed plate 10 is engaged with the needle base 2, improving the firmness of the assembly of the needle base 2 and the flashing needle 1.

[0029] The middle part of the grounding base 8 is made of metal, which facilitates the electrical connection between the top of the grounding base 8 and the pin seat 2. The bottom of the grounding base 8 can be connected to a grounding wire to facilitate lightning protection and conductivity of the main body. The seat cavity 5 and the cavity plate 6 are movable to each other, so that the cavity plate 6 is circular and fits into the seat cavity 5. Rotating the cavity plate 6 can change the position of the plate mouth 7 on the end wall of the cavity plate 6. Then, steel wire and other binding materials are threaded through the adjusted plate mouth 7 to bind the plate mouth 7, cavity plate 6, pin seat 2 and wind power generation components together, which improves the firmness and stability of the main body assembly. The bottom arc shape of the cover ring 17 covers and fits onto the upper wall of the lightning protection part of the power generation component. Then, the top wall of the collar 15 is fitted onto the end of the slot 14. Then, the fixing screw 16 is tightened and inserted into the nail plate 13 and collar 15 to fix the nail plate 13 and collar 15 together. Then, the fixing screw 18 is rotated to make the fixing screw 18 and the cover ring 17 threadedly connected, so that the bottom screw of the screw 18 moves down and abuts against the upper wall of the lightning protection part of the power generation component. The lightning protection part of the power generation component is assembled and positioned with the nail plate 13, collar 15 and cover ring 17, which facilitates the assembly and positioning of the main body.

[0030] This invention utilizes the metal material of the lightning rod 1 to facilitate the conduction of lightning current. The bottom of the lightning rod 1 is threadedly connected to the needle base 2 through the seat screw hole 4, which facilitates the assembly of the lightning rod 1 and the needle base 2 and also makes it easy to disassemble. After disassembly, it is convenient to clean and maintain the lightning rod 1 and the needle base 2, ensuring that the main body is in good condition for lightning protection. At the same time, the fixed plate 10 and the lightning rod 1 move together, allowing the fixed plate 10 to move to the bottom part of the lightning rod 1. Simultaneously, the disc pin 11, which moves down synchronously with the fixed plate 10, passes through the seat hole 3, so that the seat hole 3 and the disc pin 11 are engaged, and the fixed plate 10 is engaged with the needle base 2, improving the firmness of the assembly of the needle base 2 and the lightning rod 1.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the technical solution of the present invention in any way. Those skilled in the art should understand that, without departing from the spirit and principles of the present invention, the technical solution can be modified and replaced in several simple ways, and these modifications and replacements are all within the scope of protection covered by the claims.

Claims

1. A lightning protection device for wind turbine generator sets, characterized in that, The device includes a flash needle (1), a needle base (2), a cavity plate (6), a fixing mechanism (9), and two nailing mechanisms (12). The needle base (2) is located at the bottom of the flash needle (1), and the flash needle (1) is made of metal. The cavity plate (6) is connected to the needle base (2). The fixing mechanism includes a fixed plate (10) and multiple pins (11). The fixed plate (10) is movably located on the outside of the flash needle (1) near the needle base (2). The multiple pins (11) are evenly arranged on the fixed plate (10). One end of each pin (11) is connected to the fixed plate (10), and the other end is connected to the needle base (2). Two nailing mechanisms (12) are arranged opposite to each other on the side of the needle holder (2). Each nailing mechanism (12) includes two nail discs (13), multiple collars (15), multiple cover rings (17), and multiple fixing screws (18). The two nail discs (13) are arranged opposite to each other at intervals. The collars (15), cover rings (17), and fixing screws (18) correspond one-to-one. The ends of the collars (15) are connected to the two nail discs (13) respectively. The cover rings (17) are connected between the two nail discs (13). The collars (15) and cover rings (17) form a circular fixing ring. The fixing screws (18) are disposed on the cover rings (17).

2. The lightning protection device for wind turbine generator sets according to claim 1, characterized in that, The needle holder (2) is provided with a seat screw hole (4), and the bottom of the flash needle (1) is threadedly connected to the seat screw hole (4).

3. The lightning protection device for wind turbine generator sets according to claim 2, characterized in that, The flashing needle (1) has multiple seat holes (3) at one end near the seat screw hole (4); during assembly, the disc pin (11) is connected to the needle seat (2) through the seat holes (3).

4. The lightning protection device for wind turbine generator sets according to claim 1, characterized in that, The needle seat (2) has a seat cavity (5) inside, and the cavity plate (6) is rotatably disposed inside the seat cavity (5).

5. The lightning protection device for wind turbine generator sets according to claim 4, characterized in that, The cavity disk (6) is circular.

6. The lightning protection device for wind turbine generator sets according to claim 1, characterized in that, The cavity plate (6) has a plate opening (7) for inserting external binding parts.

7. The lightning protection device for wind turbine generator sets according to claim 1, characterized in that, The solid plate (10) is in the shape of a ring.

8. The lightning protection device for wind turbine generator sets according to claim 1, characterized in that, The nail tray (13) is provided with multiple slots (14) and multiple fixing screws (16). The slots (14) correspond one-to-one with the collars (15), and the fixing screws (16) correspond one-to-one with the slots (14). The end of the collar (15) is engaged with the nail tray (13) through the slots (14). The fixing screws (16) are used to fasten the collars (15) and the nail tray (13).

9. The lightning protection device for wind turbine generator sets according to claim 1, characterized in that, The needle holder (2) is also provided with a plurality of ground wire seats (8) arranged in a ring around the center of the needle holder (2), and the middle part of the ground wire seat (8) is made of metal material.

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