CN211648373U

CN211648373U - Lightning protection grounding device of wind driven generator

Info

Publication number: CN211648373U
Application number: CN202020226364.2U
Authority: CN
Inventors: 冯昊; 张焜; 孙含洛
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-10-09
Anticipated expiration: 2030-02-28

Abstract

The utility model discloses a lightning protection grounding device of a wind driven generator, which is connected with the rotating shaft end of the wind driven generator and is positioned in front of blades; the lightning protection device comprises a conductive track, a conductive sliding block, a conductive rod and a lightning protection component; the conductive track is an annular track and is fixed on the outer side of the rotating shaft in a surrounding mode, the conductive track is electrically connected with a grounding wire extending into the rotating shaft, and the grounding wire is grounded downwards along the whole structure of the wind driven generator; the conductive sliding block is connected on the conductive track in a sliding manner; one end of the conducting rod is fixed on one side of the conducting slide block, which is back to the blade, and is parallel to the rotating shaft; the lightning protection component is connected to the other end of the conducting rod. The utility model provides a shockproof aerogenerator's lightning grounding device through setting up conductive track and the electrically conductive slider that can relative slip, makes lightning-arrest subassembly pass through the conducting rod and installs on electrically conductive slider, when the thunderbolt produces vibrations appearing, can realize buffering through the slip of electrically conductive slider on conductive track and offset, and it is effectual to take shelter from thunder, and shock-absorbing capacity is strong.

Description

Lightning protection grounding device of wind driven generator

Technical Field

The utility model relates to a wind power generation technical field, more specifically the saying so relates to a aerogenerator lightning grounding device.

Background

With the development of wind power technology, the height of wind generating sets is also increasing. At present, the height of the novel wind generating set reaches or even exceeds 160 meters. However, wind turbine generators are usually installed in relatively open high-altitude areas or coastal areas, and are vulnerable to lightning strikes because of their height as a protruding object in these areas. In order to prevent the wind generating set from being damaged by lightning stroke, a lightning protection device is required to be arranged for the wind generating set. In use, the lightning rod does not have the function of buffering and damping, so that the wind driven generator is easily damaged in the lightning stroke process, and the requirements of people cannot be met.

Therefore, how to provide a lightning protection grounding device for a wind driven generator with good lightning protection effect and strong buffering capacity is a problem that needs to be solved urgently by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a aerogenerator lightning protection earthing device aims at solving above-mentioned technical problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a lightning protection grounding device of a wind driven generator is connected with the end of a rotating shaft of the wind driven generator and is positioned in front of blades; the method comprises the following steps: the lightning protection device comprises a conductive track, a conductive sliding block, a conductive rod and a lightning protection component;

the conductive track is an annular track and is fixed on the outer side of the rotating shaft in a surrounding mode, the conductive track is electrically connected with a grounding wire extending into the rotating shaft, and the grounding wire is grounded downwards along the whole structure of the wind driven generator;

the conductive sliding block is connected on the conductive track in a sliding mode;

one end of the conductive rod is fixed on one side of the conductive sliding block, which is back to the blade, and is parallel to the rotating shaft;

the lightning protection component is connected to the other end of the conducting rod.

Through the technical scheme, the utility model provides a shockproof aerogenerator's lightning grounding device through setting up can relative slip conductive track and electrically conductive slider, makes lightning-arrest subassembly pass through the conducting rod and installs on electrically conductive slider, when appearing thunderbolt and producing vibrations, can realize buffering through the slip of electrically conductive slider on conductive track and offset, and it is effectual to take shelter from thunder, and shock-absorbing capacity is strong.

Preferably, in the lightning protection grounding device for the wind driven generator, the lightning protection assembly comprises a rotating ring, an inner ring, an outer ring and a lightning rod; the rotating ring is rotatably connected with the end of the conducting rod; the inner ring is coaxially fixed on the outer side of the rotating ring through a plurality of first supporting rods; the outer ring is coaxially fixed on the outer side of the inner ring through a plurality of second supporting rods; the number of the lightning rods is multiple, and the lightning rods are uniformly fixed on the outer side of the outer ring. The utility model provides a lightning-arrest subassembly passes through the rotating ring and is connected with the conducting rod rotation, and buffering shock attenuation effect when can further improving the thunderbolt through the rotation of lightning-arrest subassembly can improve its lightning-arrest effect through the setting of interior outer ring and lightning rod.

Preferably, in the lightning protection grounding device for the wind power generator, the number of the first support rod and the number of the second support rod are 4. The structural stability of the connection can be effectively realized.

Preferably, in the lightning protection grounding device for the wind driven generator, the number of the lightning rods is 4. Can effectively improve the lightning protection effect.

Preferably, in the lightning protection grounding device for a wind turbine, the rotating ring, the inner ring, the outer ring, the lightning rod, the first support rod and the second support rod are all made of conductive materials. Can effectively improve lightning-arrest subassembly's electrically conductive effect.

Preferably, in the lightning protection grounding device for the wind driven generator, a connection part of the conductive rod and the rotating ring is coated with conductive lubricating oil. The smoothness of the relative movement of the conducting rod and the rotating ring is improved.

Preferably, in the lightning protection grounding device for the wind driven generator, the conductive track is coated with conductive lubricating oil. The smoothness of the relative movement of the conductive sliding block and the conductive sliding rail is improved.

Can know via foretell technical scheme, compare with prior art, the utility model discloses a lightning grounding device of aerogenerator has following beneficial effect:

1. the utility model provides a shockproof aerogenerator's lightning grounding device through setting up conductive track and the electrically conductive slider that can relative slip, makes lightning-arrest subassembly pass through the conducting rod and installs on electrically conductive slider, when the thunderbolt produces vibrations appearing, can realize buffering through the slip of electrically conductive slider on conductive track and offset, and it is effectual to take shelter from thunder, and shock-absorbing capacity is strong.

2. The utility model provides a lightning-arrest subassembly passes through the rotating ring and is connected with the conducting rod rotation, and buffering shock attenuation effect when can further improving the thunderbolt through the rotation of lightning-arrest subassembly can improve its lightning-arrest effect through the setting of interior outer ring and lightning rod.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural view provided by the present invention;

figure 2 the attached drawing is the utility model provides a lightning-arrest subassembly's front view.

Wherein:

1-a rotating shaft;

2-a blade;

3-electrically conductive tracks;

4-a conductive slider;

5-a conductive rod;

6-a lightning protection component;

61-a rotating ring;

62-inner ring;

63-outer loop;

64-a lightning rod;

65-a first support bar;

66-second support bar.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to the attached

drawings

1 and 2, the embodiment of the utility model discloses a lightning protection grounding device of a wind driven generator, which is connected with the end of a rotating shaft 1 of the wind driven generator and is positioned in front of a blade 2; the method comprises the following steps: the lightning protection device comprises a conductive track 3, a conductive slider 4, a conductive rod 5 and a lightning protection component 6;

the conductive track 3 is an annular track and is fixed on the outer side of the rotating shaft 1 in a surrounding mode, the conductive track 3 is electrically connected with a grounding wire extending into the rotating shaft 1, and the grounding wire is grounded downwards along the whole structure of the wind driven generator;

the conductive sliding block 4 is connected on the conductive track 3 in a sliding way;

one end of the conducting rod 5 is fixed on one side of the conducting slide block 4, which is back to the blade 2, and is parallel to the rotating shaft 1;

the lightning arrester assembly 6 is connected to the other end of the conductive rod 5.

In order to further optimize the above technical solution, the lightning protection assembly 6 comprises a rotating ring 61, an inner ring 62, an outer ring 63 and a lightning rod 64; the rotating ring 61 is rotatably connected with the end of the conducting rod 5; the inner ring 62 is coaxially fixed outside the rotating ring 61 through a plurality of first support rods 65; the outer ring 63 is coaxially fixed outside the inner ring 62 by a plurality of second support rods 66; the number of the lightning rods 64 is plural, and they are uniformly fixed to the outside of the outer ring 63.

In order to further optimize the above technical solution, the number of the first supporting rods 65 and the number of the second supporting rods 66 are 4.

In order to further optimize the above technical solution, the number of the lightning rods 64 is 4.

In order to further optimize the above technical solution, the rotating ring 61, the inner ring 62, the outer ring 63, the lightning rod 64, the first support rod 65 and the second support rod 66 are all made of conductive materials.

In order to further optimize the above technical solution, the connection of the conductive rod 5 and the rotating ring 61 is coated with conductive lubricant.

In order to further optimize the above technical solution, the conductive tracks 3 are coated with conductive lubricating oil.

The utility model discloses a lightning-arrest principle does:

when the rotating shaft 1 rotates, the conductive track 3 rotates along with the rotating shaft 1, the conductive slider 4 and the conductive track 3 generate relative displacement under the action of gravity, and the conductive slider 3 is always positioned below the rotating shaft 1.

When the lightning stroke strength is small, the vibration of the lightning stroke is buffered through the rotation of the rotating ring 61 relative to the conducting rod 5; when the force of the lightning strike is large, the conductive slider 4 will also slide on the conductive track 3 to further buffer the vibration of the lightning strike.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The lightning protection grounding device of the wind driven generator is characterized in that the lightning protection grounding device is connected with the end of a rotating shaft (1) of the wind driven generator and is positioned in front of a blade (2); the method comprises the following steps: the lightning protection device comprises a conductive track (3), a conductive slider (4), a conductive rod (5) and a lightning protection component (6);

the conductive track (3) is an annular track and is fixed on the outer side of the rotating shaft (1) in a surrounding mode, the conductive track (3) is electrically connected with a grounding wire extending into the rotating shaft (1), and the grounding wire is grounded downwards along the whole structure of the wind driven generator;

the conductive sliding block (4) is connected to the conductive track (3) in a sliding manner;

one end of the conductive rod (5) is fixed on one side, back to the blade (2), of the conductive sliding block (4) and is parallel to the rotating shaft (1);

the lightning protection component (6) is connected to the other end of the conducting rod (5).

2. The lightning protection grounding device of the wind driven generator according to claim 1, characterized in that the lightning protection assembly (6) comprises a rotating ring (61), an inner ring (62), an outer ring (63) and a lightning rod (64); the rotating ring (61) is rotationally connected with the end of the conducting rod (5); the inner ring (62) is coaxially fixed on the outer side of the rotating ring (61) through a plurality of first supporting rods (65); the outer ring (63) is coaxially fixed on the outer side of the inner ring (62) through a plurality of second support rods (66); the lightning rod (64) is multiple in number and is uniformly fixed on the outer side of the outer ring (63).

3. The lightning protection grounding device of the wind driven generator according to claim 2, characterized in that the number of the first support rods (65) and the number of the second support rods (66) are 4.

4. The lightning protection grounding device of the wind driven generator according to claim 2, characterized in that the number of the lightning rods (64) is 4.

5. The lightning protection grounding device of the wind driven generator according to any one of claims 2 to 4, wherein the rotating ring (61), the inner ring (62), the outer ring (63), the lightning rod (64), the first support rod (65) and the second support rod (66) are all made of conductive materials.

6. The lightning protection grounding device of the wind driven generator according to claim 2, characterized in that the connection between the conductive rod (5) and the rotating ring (61) is coated with conductive lubricant.

7. The lightning protection grounding device for the wind driven generator according to claim 1, characterized in that the conductive tracks (3) are coated with conductive lubricant.