Lightning protection eyebolt of wind-driven generator

Abstract

The utility model discloses a lightning protection eyebolt for a wind-driven generator, which particularly relates to the technical field of bolts and comprises an eyebolt part for mounting the wind-driven generator. A lightning protection conduction piece is arranged outside the eyebolt piece; the conduction piece comprises a conductive column, a packaging cylinder is arranged on the rear side of the conductive column, a conductive rod used for being connected with the conductive column is installed in the front end of the packaging cylinder, a connecting wire used for being connected with a grounding wire is installed at the rear end of the conductive rod, and the rear end of the connecting wire penetrates through the packaging cylinder and extends out of the rear end of the packaging cylinder. According to the utility model, the conductive column is connected with the eyebolt piece, so that the conductive column can conduct high-voltage current on the eyebolt piece to the conductive rod, and then the high-voltage current is conducted to a grounding wire through the connecting lead on the conductive rod, so that lightning current on the eyebolt piece can be conducted and dispersed to the ground; damage of thunder and lightning to the wind-driven generator is avoided, and then the use performance of the wind-driven generator is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of bolt technology, and more specifically to a lightning protection lifting ring bolt for a wind turbine. Background Technology

[0002] Wind turbines, as clean and renewable energy utilization devices, play a vital role in modern power systems. They convert wind energy into electricity, providing society with a significant amount of green power. Among the components, eye bolts are a key connecting part. They are mainly used to connect various components of the wind turbine, such as between the tower and the nacelle, and between the nacelle and the blade mounting brackets. These connections need to possess high strength and high reliability to ensure that the wind turbine can withstand various complex loads during long-term operation, including wind force, gravity, and centrifugal force.

[0003] As shown in the prior art disclosed in CN117307421A, although the prior art achieves the lightning protection effect through the main lightning rod and the first lightning rod ball, after a thunderstorm, rainwater falls into the porous storage box, causing the water-absorbing sponge to absorb the rainwater. The water-absorbing sponge becomes heavier after absorbing the rainwater, and under the action of gravity, it presses down on the load-bearing rope. At this time, since the load-bearing rope is wound on the rotating rod, the rotating rod will rotate as the load-bearing rope is stretched. At the same time, the main pull rope wound in the same direction will also lengthen. The lightning rod is hinged, and without the pull of the main pull rope, it will tilt, opening up like a flower, exposing multiple main lightning rods and secondary lightning rods. With the addition of multiple lightning rods, the lightning protection effect is increased. When the thunderstorm stops, due to the material of the water-absorbing sponge, the water will be quickly lost. Without the action of gravity, the spring seat will rotate, causing the rotating rod to rotate, thus folding the whole back to its original position. However, the lightning protection mechanism in this technical solution is connected by connecting flanges and fixing bolts. When lightning strikes the wind turbine, without proper lightning protection measures, the huge current and high voltage generated by the lightning may be conducted to the electrical equipment through the lifting eye bolts, thereby affecting the performance of the wind turbine. Utility Model Content

[0004] To overcome the aforementioned deficiencies in the prior art, this utility model provides a lightning protection eye bolt for wind turbines. By connecting the conductive post to the eye bolt, the conductive post can conduct the high-voltage current on the eye bolt to the conductive rod, and then conduct it to the grounding wire via the connecting wire on the conductive rod. In this way, the lightning current on the eye bolt can be conducted and dispersed into the ground, preventing lightning from damaging the wind turbine and ensuring the performance of the wind turbine, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lightning protection lifting eye bolt for a wind turbine generator, comprising a lifting eye bolt component for installing a wind turbine generator;

[0006] The lifting eye bolt is externally equipped with a conductive element for lightning protection;

[0007] The conductive component includes a conductive post, and a packaging cylinder is provided on the rear side of the conductive post. A conductive rod for connecting the conductive post is installed inside the front end of the packaging cylinder, and a connecting wire for connecting a grounding wire is installed at the rear end of the conductive ring. The rear end of the connecting wire passes through the packaging cylinder and extends to the outside of the rear end of the packaging cylinder.

[0008] In a preferred embodiment, the eye bolt includes a screw seat, a screw rod, and an eye head, wherein the screw rod is located at the bottom of the screw seat and the eye head is located at the top of the screw seat;

[0009] The screw seat has an internal mounting cavity, and the rear side of the screw seat has a mounting hole that communicates with the mounting cavity. The conductive post is located inside the mounting cavity, and the conductive rod is located inside the mounting hole.

[0010] In a preferred embodiment, a fixing ring is installed inside the mounting hole. The fixing ring is sleeved on the outside of the front end of the conductive rod, and the rear end of the fixing ring passes through the mounting hole and extends to the rear side of the screw seat.

[0011] The outer side of the encapsulation cylinder is rotatably connected to a movable ring, and an assembly ring is sleeved on the outside of the movable ring. The front end of the assembly ring is sleeved on the outside of the fixed ring, and the assembly ring is threadedly connected to the fixed ring.

[0012] In a preferred embodiment, an annular groove is provided on one side of the outer side of the encapsulation cylinder corresponding to the movable ring, and a positioning ring is provided inside the annular groove, with the outer side of the positioning ring fixed to the inner wall of the movable ring.

[0013] In a preferred embodiment, the top of the screw seat is provided with a connecting seat, and the top of the connecting seat is provided with a fastening bolt. The bottom end of the fastening bolt passes through the connecting seat and extends into the interior of the screw seat. The fastening bolt is threadedly connected to the screw seat.

[0014] A connecting plate is installed on the rear side of the connecting seat, and a protective shell is installed at the bottom of the connecting plate. The protective shell is sleeved on the outside of the assembly ring, the fixing ring, and the sealing cylinder.

[0015] In a preferred embodiment, the bottom of the connecting seat is equipped with a plurality of limiting posts arranged in a circular array, and a limiting groove is opened on one side of the top of the screw seat corresponding to the limiting posts, and the bottom end of the limiting posts extends into the limiting groove.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] 1. By connecting the conductive column to the lifting eye bolt, the conductive column can conduct the high voltage current on the lifting eye bolt to the conductive rod, and then conduct it to the grounding wire through the connecting wire on the conductive rod. In this way, the lightning current on the lifting eye bolt can be conducted and dispersed into the ground, avoiding damage to the wind turbine by lightning, and thus ensuring the performance of the wind turbine.

[0018] 2. The assembly ring and the fixed ring are connected by threads, allowing the outer assembly ring to be separated from the fixed ring for disassembly of the transmission component. When the inner assembly ring contacts the fixed ring, the transmission component can be assembled, thereby improving the convenience of disassembling and assembling the transmission component.

[0019] 3. Secure the connector with bolts and fit the protective shell on the connector onto the outside of the conductive component. This protective shell shields the conductive component from external impacts, preventing damage and ensuring its performance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a rear view of the screw of this utility model;

[0022] Figure 3 This is an exploded view of the screw seat of this utility model;

[0023] Figure 4 This is a side sectional view of the fixing ring of this utility model;

[0024] Figure 5 This is a side sectional view of the assembly ring of this utility model.

[0025] The attached diagram is labeled as follows: 1. Conductive post; 2. Encapsulation cylinder; 3. Conductive rod; 4. Connecting wire; 5. Screw seat; 6. Screw; 7. Lifting eye head; 8. Mounting cavity; 9. Mounting hole; 10. Fixed ring; 11. Moving ring; 12. Assembly ring; 13. Ring groove; 14. Positioning ring; 15. Connecting seat; 16. Fastening bolt; 17. Connecting plate; 18. Protective shell; 19. Limiting post; 20. Limiting groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Refer to the instruction manual appendix Figure 1-5 This utility model provides a lightning protection eye bolt for wind turbine generators, including an eye bolt component for installing wind turbine generators; the eye bolt component includes a screw seat 5, a screw rod 6, and an eye head 7, the screw rod 6 is located at the bottom of the screw seat 5, and the eye head 7 is located at the top of the screw seat 5; the screw seat 5 has an installation cavity 8 inside, and an installation hole 9 communicating with the installation cavity 8 is opened on the rear side of the screw seat 5, the conductive post 1 is located inside the installation cavity 8, and the conductive rod 3 is located inside the installation hole 9.

[0028] The equipment on the wind turbine is assembled and fixed by the screw 6 on the screw seat 5, and then the equipment is lifted and transported by the lifting eye head 7. Subsequently, the conductive post 1 and conductive rod 3 on the conductive component are assembled and fixed by the mounting cavity 8 and mounting hole 9. This facilitates the conduction of the huge current generated by lightning to the outside through the conductive component, so as to avoid damage to the wind turbine by lightning strike.

[0029] To prevent lightning from damaging wind turbines, the enormous current generated by lightning needs to be kept away from the wind turbines, such as... Figure 1-4 As shown, the external part of the lifting eye bolt is provided with a conductive component for lightning protection; the conductive component includes a conductive post 1, and a sealing cylinder 2 is provided on the rear side of the conductive post 1. A conductive rod 3 for connecting the conductive post 1 is installed inside the front end of the sealing cylinder 2, and a connecting wire 4 for connecting the grounding wire is installed at the rear end of the conductive ring. The rear end of the connecting wire 4 passes through the sealing cylinder 2 and extends to the outside of the rear end of the sealing cylinder 2.

[0030] By connecting the conductive post 1 to the eye bolt, the conductive post 1 can conduct the high-voltage current on the eye bolt to the conductive rod 3, and then conduct it to the grounding wire through the connecting wire 4 on the conductive rod 3. In this way, the lightning current on the eye bolt can be conducted and dispersed into the ground, thereby preventing lightning from damaging the wind turbine.

[0031] In order to facilitate the individual replacement of damaged transmission components or lifting eye bolts, it is necessary to facilitate the disassembly of both, such as... Figure 3-5 As shown, a fixing ring 10 is installed inside the mounting hole 9. The fixing ring 10 is sleeved on the outside of the front end of the conductive rod 3, and the rear end of the fixing ring 10 passes through the mounting hole 9 and extends to the rear side of the screw seat 5. A movable ring 11 is rotatably connected to the outside of the encapsulation cylinder 2, and an assembly ring 12 is sleeved on the outside of the movable ring 11. The front end of the assembly ring 12 is sleeved on the outside of the fixing ring 10, and the assembly ring 12 is threadedly connected to the fixing ring 10.

[0032] When assembling the conductive rod 3 and connecting it to the conductive post 1, the operator inserts the encapsulation cylinder 2 into the fixing ring 10 and gradually rotates the assembly ring 12, which is threadedly connected to the fixing ring 10. This allows the encapsulation cylinder 2 to be installed and fixed, ensuring the stability of the connection between the conductive rod 3 and the conductive post 1. The encapsulation cylinder 2 has an annular groove 13 on one side corresponding to the movable ring 11. The annular groove 13 has a positioning ring 14 inside, and the positioning ring 14 is fixed to the inner wall of the movable ring 11. This allows the movable ring 11 to rotate freely through the movable connection between the positioning ring 14 and the annular groove 13, avoiding the operation of the assembly ring 12 from causing the encapsulation cylinder 2 to rotate as well. This improves the convenience of rotating the assembly ring 12.

[0033] When disassembling the conductive rod 3 and separating it from the conductive post 1, the assembly ring 12 is rotated to separate from the fixing ring 10, thereby removing the unrestricted encapsulation cylinder 2, separating the conductive component from the lifting eye bolt component, and thus realizing the individual replacement of the conductive component and the lifting eye bolt component.

[0034] At the same time, to prevent external collisions from causing impact damage to the transmission components, it is necessary to shield and protect the transmission components, such as... Figure 2 and 3 As shown, the top of the screw seat 5 is provided with a connecting seat 15, and the top of the connecting seat 15 is provided with a fastening bolt 16. The bottom end of the fastening bolt 16 passes through the connecting seat 15 and extends into the interior of the screw seat 5. The fastening bolt 16 is threadedly connected to the screw seat 5. A connecting plate 17 is installed on the rear side of the connecting seat 15, and a protective shell 18 is installed on the bottom end of the connecting plate 17. The protective shell 18 is sleeved on the outside of the assembly ring 12, the fixing ring 10, and the encapsulation cylinder 2. The protective shell 18 is placed outside the encapsulation cylinder 2, and then the connecting seat 15 is fixed to the top of the screw seat 5 by the fastening bolt 16. To ensure the stability of the protective shell 18 and improve its protective effect on the conductive components, the connecting seat 15 is equipped with multiple limiting posts 19 arranged in a circular array at its bottom. A limiting groove 20 is formed on one side of the screw seat 5 corresponding to the limiting posts 19, with the bottom end of each limiting post 19 extending into the limiting groove 20. This allows the connecting seat 15 to be fixed by the engagement of the limiting posts 19 and the limiting groove 20, ensuring the stability of the connecting seat 15 and preventing rotation and misalignment of the conductive components. This, in turn, ensures the protective effect of the protective shell 18 on the conductive components.

[0035] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lightning protection hanger bolt for a wind energy generator, characterized in that: The invention discloses a lifting ring bolt for wind power generator installation. The lifting ring bolt is externally provided with a lightning protection conducting element. The conducting element comprises an electrically-conductive column (1), the rear side of which is provided with an encapsulation cylinder (2), the front end of which is internally provided with an electrically-conductive rod (3) for connecting the electrically-conductive column (1), and the rear end of which is provided with a connecting wire (4) for connecting a grounding wire, the rear end of which penetrates through the encapsulation cylinder (2) and extends to the rear end outside of the encapsulation cylinder (2).

2. The lightning protection hanger bolt for a wind turbine generator according to claim 1, wherein: The lifting ring bolt comprises a screw seat (5), a screw rod (6) and a lifting ring head (7), the screw rod (6) is arranged at the bottom of the screw seat (5), and the lifting ring head (7) is arranged at the top of the screw seat (5). The screw seat (5) is internally provided with an installation cavity (8), and the rear side of the screw seat (5) is provided with an installation hole (9) in communication with the installation cavity (8), the electrically-conductive column (1) is arranged in the installation cavity (8), and the electrically-conductive rod (3) is arranged in the installation hole (9).

3. The lightning protection hanger bolt for a wind turbine generator according to claim 2, wherein: The installation hole (9) is internally provided with a fixing ring (10), the fixing ring (10) is sleeved on the front end outside of the electrically-conductive rod (3), and the rear end of the fixing ring (10) penetrates through the installation hole (9) and extends to the rear side of the screw seat (5). The encapsulation cylinder (2) is externally rotatably connected with a movable ring (11), and the movable ring (11) is externally sleeved with an assembly ring (12), the assembly ring (12) is sleeved on the outside of the fixing ring (10), and the assembly ring (12) is threadedly connected with the fixing ring (10).

4. The lightning protection hanger bolt for a wind turbine generator according to claim 3, wherein: The encapsulation cylinder (2) is externally provided with a ring groove (13) corresponding to one side of the movable ring (11), and the ring groove (13) is internally provided with a positioning ring (14), and the positioning ring (14) is fixedly connected with the inner wall of the movable ring (11) on the outside.

5. The lightning protection hanger bolt for a wind turbine generator according to claim 3, wherein: The screw seat (5) is provided with an adapter seat (15) at the top, and the adapter seat (15) is provided with a fastening bolt (16) at the top, the bottom end of the fastening bolt (16) penetrates through the adapter seat (15) and extends to the inside of the screw seat (5), and the fastening bolt (16) is threadedly connected with the screw seat (5). The rear side of the adapter seat (15) is provided with an adapter plate (17), and the bottom end of the adapter plate (17) is provided with a protective shell (18), the protective shell (18) is sleeved on the outside of the assembly ring (12), the fixing ring (10) and the encapsulation cylinder (2).

6. A lightning protection hanger bolt for a wind turbine generator according to claim 5, wherein: The bottom of the adapter seat (15) is provided with a plurality of limiting columns (19) arranged in an annular array, and the top of the screw seat (5) is provided with a limiting groove (20) corresponding to one side of the limiting column (19), and the bottom end of the limiting column (19) extends to the inside of the limiting groove (20).

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