CN220522716U

CN220522716U - Lightning protection grounding mechanism of wind power generation equipment

Info

Publication number: CN220522716U
Application number: CN202321865316.8U
Authority: CN
Inventors: 蒋宁
Original assignee: China Power Investment Hubei Xianjuding Wind Power Generation Co ltd
Current assignee: China Power Investment Hubei Xianjuding Wind Power Generation Co ltd
Priority date: 2023-07-15
Filing date: 2023-07-15
Publication date: 2024-02-23
Anticipated expiration: 2033-07-15

Abstract

The utility model relates to a lightning protection grounding mechanism of wind power generation equipment, which comprises a generator box, a support column and a power generation mechanism, wherein the generator box is arranged at the top of the support column; the power generation mechanism comprises a power generation body, a power generation rotating shaft, a fan blade head and power generation fan blades; the generator body is arranged in the generator case; the power generation rotating shaft comprises an inner shaft, an outer shaft sleeved on the inner shaft and a first insulating layer arranged between the inner shaft and the outer shaft, one end of the inner shaft is connected with the generator body, and one end of the outer shaft, which is far away from the generator body, extends out of the generator case and is connected with a fan blade head; the power generation fan blades are uniformly arranged around the fan blade heads, lightning rods are arranged on one sides of the power generation fan blades, which are close to the power generation machine case, and are connected with the outer shafts; according to the utility model, the lightning rod is arranged at the position close to the power generation fan blade, so that the power generation fan blade can be directly protected, lightning is prevented from striking a mountain due to tip discharge, and the occurrence of faults of wind power generation equipment is reduced.

Description

Lightning protection grounding mechanism of wind power generation equipment

Technical Field

The utility model relates to the technical field of wind power generation equipment, in particular to a lightning protection grounding mechanism of wind power generation equipment.

Background

The wind power generation equipment generates power by utilizing wind energy, is an important component of the wind power industry, is also the foundation and the guarantee of the development of the wind power industry, has a simpler working principle of wind power generation, enables a wind wheel to rotate under the action of wind force, converts the kinetic energy of the wind into the mechanical energy of a wind wheel shaft, and enables a generator to rotate to generate power under the driving of the wind wheel shaft, and uses the heat energy of the working medium of the atmosphere as a generator.

Wind power generation equipment is usually installed on mountain tops or in plain areas, lightning stroke is easy to occur in thunderstorm weather, and lightning protection is needed to be achieved for the wind power generator. Most of the existing lightning rod is arranged at the top of the generator case, but due to the characteristic of lightning tip discharge, lightning often strikes the position of the fan blade, and the fan blade is usually fragile and extremely fragile.

Disclosure of Invention

Based on the expression, the utility model provides a lightning grounding mechanism of wind power generation equipment, which can directly protect the power generation fan blades by installing a lightning rod at a position close to the power generation fan blades, avoid lightning striking on a mountain due to tip discharge and reduce the occurrence of faults of the wind power generation equipment.

The technical scheme for solving the technical problems is as follows: the lightning protection grounding mechanism of the wind power generation equipment comprises a generator box, a support column and a power generation mechanism, wherein the generator box is arranged at the top of the support column; the power generation mechanism comprises a power generator body, a power generation rotating shaft, a fan blade head and power generation fan blades; the generator body is arranged in the generator case; the power generation rotating shaft comprises an inner shaft, an outer shaft sleeved on the inner shaft and a first insulating layer arranged between the inner shaft and the outer shaft, one end of the inner shaft is connected with the generator body, and one end of the outer shaft far away from the generator body extends out of the generator case and is connected with the fan blade head; the power generation fan blades are uniformly arranged around the fan blade heads, lightning rods are arranged on one sides, close to the power generation machine case, of the power generation fan blades, and the lightning rods are connected with the outer shafts.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, a grounding ring is arranged in the generator case, and one end, close to the generator body, of the outer shaft is rotatably inserted into the grounding ring; the outer side wall of the grounding ring is connected with a grounding wire.

Further, an annular electric brush groove is formed in the inner side wall of the grounding ring, an electric brush ring is arranged on the outer side wall of the outer shaft, the electric brush ring is rotatably arranged in the electric brush groove, and the electric brush ring is tightly attached to the inner side wall of the electric brush groove.

Further, the lower end of the grounding wire penetrates through the support column and is connected with the ground, and the lower end of the grounding wire is connected with a power dissipation block.

Further, one end of the outer shaft far away from the generator body stretches into the fan blade head, and the lightning rod stretches into the fan blade head and is connected with the outer shaft.

Further, a section of the inner shaft far away from the generator body stretches into the fan blade head and is connected with an insulating block, and the insulating block is embedded in the fan blade head.

Further, a second insulating layer is arranged at the joint of the outer shaft and the generator case.

Further, the end part of the lightning rod is a tip and extends out of the power generation fan blade.

Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:

according to the utility model, the lightning rod is arranged at the position close to the power generation fan blade, so that the power generation fan blade can be directly protected, lightning is prevented from striking a mountain due to tip discharge, and the occurrence of faults of wind power generation equipment is reduced.

Drawings

FIG. 1 is a schematic view of a lightning grounding mechanism of a wind power plant according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a power generation mechanism and a grounding mechanism according to an embodiment of the present utility model;

in the drawings, the list of components represented by the various numbers is as follows:

1. a generator case; 11. a second insulating layer; 2. a support column; 3. a generator body; 4. a power generation rotating shaft; 41. an inner shaft; 42. an outer shaft; 43. a first insulating layer; 44. a brush ring; 5. a fan blade head; 51. an insulating block; 6. generating fan blades; 7. a lightning rod; 8. a ground ring; 81. a brush slot; 9. a ground wire; 91. and a power dissipation block.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Examples of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.

The utility model provides a lightning protection grounding mechanism of wind power generation equipment, includes generator case 1, support column 2 and generating mechanism, and the bottom of support column 2 is fixed subaerial, and generator case 1 installs at the top of support column 2, lifts generator case 1.

The power generation mechanism comprises a power generator body 3, a power generation rotating shaft 4, a fan blade head 5 and power generation fan blades 6. The generator body 3 is mounted in the generator case 1. One section of the power generation rotating shaft 4 is connected with the power generator body 3, the other end extends out of one side of the power generator case 1 and is connected with the fan blade head 5, and the power generation fan blades 6 are uniformly arranged around the fan blade head 5. The power generation fan blades 6 rotate under the action of wind force, and drive the generator body 3 to rotate for power generation through the transmission of the fan blade heads 5 and the power generation rotating shaft 4.

Specifically, the power generation rotating shaft 4 includes an inner shaft 41, an outer shaft 12 sleeved on the inner shaft 41, and a first insulating layer 43 disposed between the inner shaft 41 and the outer shaft 42. The outer shaft 42 is used for conducting lightning, the inner shaft 41 is used for driving the generator body 3 to rotate for generating electricity, and the first insulating layer 43 is used for isolating the lightning from the generator body 3.

One end of the inner shaft 41 is connected with the generator body 3, and the outer shaft 42 and one end of the inner shaft 41 far away from the generator body 3 extend out of the generator case 1 and both extend into the fan blade heads 5. A section of the inner shaft 41, which is far away from the generator body 3, is connected with an insulating block 51, and the insulating block 51 is embedded in the fan blade head 5.

The junction of the outer shaft 42 and the generator case 1 is provided with a second insulating layer 11 to isolate the generator case 1 from lightning.

The generating fan blade 6 is close to the one side of generating machine case 1 and all is provided with lightning rod 7, and the tip of lightning rod 7 is pointed and stretches out generating fan blade 6, and lightning rod 7 is used for guiding the thunder and lightning, avoids the thunder and lightning to strike on generating fan blade 6 because of point discharge. The other ends of the lightning rods 7 extend into the blade heads 5 and are connected with the outer shafts 42, and lightning rods 7 guide lightning directly into the outer shafts 42.

In addition, a ground ring 8 is provided in the generator case 1, and one end of the outer shaft 42 near the generator body 3 is rotatably inserted into the ground ring 8. The inner side wall of the grounding ring 8 is provided with an annular brush groove 81, the outer side wall of the outer shaft 42 is provided with a brush ring 44, the brush ring 44 is rotatably arranged in the brush groove 81, and the brush ring 44 is closely attached to the inner side wall of the brush groove 81. The outer side wall of the grounding ring 8 is connected with a grounding wire 9, the lower end of the grounding wire 9 penetrates through the support column 2 and is connected with the ground, and the lower end of the grounding wire 9 is connected with a power dissipation block 91.

The lightning passes through the lightning rod 7, the outer shaft 42, the ground ring 8, the ground wire 9 and then flows into the power dissipation block 91. The lightning is dispersed into the ground through the power dissipation block 91.

According to the embodiment, the lightning rod 7 is arranged at the position close to the power generation fan blade 6, so that the power generation fan blade 6 can be directly protected, lightning is prevented from striking on a mountain due to tip discharge, and the occurrence of faults of wind power generation equipment is reduced. And this embodiment has realized the isolation of lightning arrester and generator body 3, can avoid generator body 3 to receive the influence of thunder and lightning.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. The lightning protection grounding mechanism of the wind power generation equipment is characterized by comprising a generator box, a support column and a power generation mechanism, wherein the generator box is arranged at the top of the support column; the power generation mechanism comprises a power generator body, a power generation rotating shaft, a fan blade head and power generation fan blades; the generator body is arranged in the generator case; the power generation rotating shaft comprises an inner shaft, an outer shaft sleeved on the inner shaft and a first insulating layer arranged between the inner shaft and the outer shaft, one end of the inner shaft is connected with the generator body, and one end of the outer shaft far away from the generator body extends out of the generator case and is connected with the fan blade head; the power generation fan blades are uniformly arranged around the fan blade heads, lightning rods are arranged on one sides, close to the power generation machine case, of the power generation fan blades, and the lightning rods are connected with the outer shafts.

2. The lightning protection grounding mechanism of a wind power generation device according to claim 1, wherein a grounding ring is arranged in the generator box, and one end of the outer shaft, which is close to the generator body, is rotatably inserted into the grounding ring; the outer side wall of the grounding ring is connected with a grounding wire.

3. The lightning protection grounding mechanism of a wind power generation device according to claim 2, wherein an annular brush groove is formed in the inner side wall of the grounding ring, a brush ring is arranged on the outer side wall of the outer shaft, the brush ring is rotatably arranged in the brush groove, and the brush ring is closely attached to the inner side wall of the brush groove.

4. The lightning protection grounding mechanism of a wind power generation device according to claim 2, wherein the lower end of the grounding wire penetrates through the support column and is connected with the ground, and the lower end of the grounding wire is connected with a power dissipation block.

5. The lightning grounding mechanism of a wind power plant of claim 1, wherein an end of said outer shaft remote from said generator body extends into said blade head and said lightning rod extends into said blade head and connects said outer shaft.

6. The lightning grounding mechanism of a wind power plant according to claim 1, wherein a section of said inner shaft remote from said generator body extends into said blade head and is connected to an insulating block embedded within said blade head.

7. The lightning grounding mechanism of a wind power plant of claim 1, wherein a second insulating layer is provided at a junction of said outer shaft and said generator housing.

8. The lightning grounding mechanism of a wind power plant of claim 1, wherein said lightning rod is pointed at its end and extends beyond said power blades.