Inspection unmanned aerial vehicle for wind turbine generator

Abstract

The utility model discloses an inspection unmanned aerial vehicle for a wind turbine generator, which comprises an unmanned aerial vehicle body and a plurality of propellers mounted at the unmanned aerial vehicle body, the propellers are mounted at a plurality of driving shafts of the unmanned aerial vehicle body, a detection module for inspection is mounted at the bottom end of the unmanned aerial vehicle body, and the inspection unmanned aerial vehicle further comprises a fixed wing and a shield group; the fixed wings are additionally arranged to guide airflow and prevent the airflow from forming vortexes around the fuselage, then the streamline-shaped unmanned aerial vehicle body shape is combined, the good flow guide effect is achieved, the stability of the unmanned aerial vehicle body located around the wind wheel is guaranteed, the propeller protection covers are additionally arranged at the propellers, and therefore direct interference of the airflow to the lift force of the propellers is reduced, and the stability of the unmanned aerial vehicle is improved. Therefore, the good self-stability can be kept even if the wind wheel is located around the wind wheel.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of wind power inspection equipment, and in particular relates to a wind turbine generator unit inspection unmanned aerial vehicle. BACKGROUND

[0002] The wind turbine generator unit is a system for converting the kinetic energy of wind into electric energy, and comprises a wind wheel and a generator. The wind wheel comprises blades, a hub, reinforcing members and the like. The wind turbine generator unit has the functions of rotating the blades to generate electricity and rotating the generator head. The wind power generation power supply comprises a wind turbine generator unit, a tower for supporting the wind turbine generator unit, a battery charging controller, an inverter, a load shedding device, a grid-connected controller and a battery pack.

[0003] Due to the high height of the wind wheel, an unmanned aerial vehicle is currently used for maintenance. The unmanned aerial vehicle photographs and identifies damage and rotating postures on the surface of the wind wheel through a camera module, and feeds back to the identification system in the background to record and feed back whether the wind wheel is normally operating or needs to be maintained.

[0004] However, the traditional inspection unmanned aerial vehicle lacks wind resistance, and when it moves to the surrounding of the wind wheel, vortexes are generated due to rotation around the wind wheel, thereby affecting the stability of the unmanned aerial vehicle.

[0005] A Chinese patent with the authorization announcement number CN214002041U discloses an unmanned aerial vehicle for wind tower inspection, which comprises an electrically controlled unmanned aerial vehicle body, a voltage stabilizing module, a voltage regulating module, a photoelectric switch, a control circuit and a receiving circuit. A support rod is installed at the upper end of the unmanned aerial vehicle body, and the photoelectric switch is annularly distributed and installed at the upper end of the support rod. The voltage stabilizing module, the voltage regulating module and the control circuit are installed in the element compartment of the unmanned aerial vehicle body and are electrically connected with the control circuit board of the unmanned aerial vehicle body. The receiving circuit is installed in the remote control box of the unmanned aerial vehicle body. When the unmanned aerial vehicle body moves around the wind tower and approaches the safe distance of the wind tower, the control circuit automatically keeps the unmanned aerial vehicle temporarily hovering or slows down the movement speed, and the ground operator is prompted through wireless to control the distance between the unmanned aerial vehicle and the wind tower in the opposite direction. After the distance is appropriate, the unmanned aerial vehicle body is controlled by the ground operator again, which brings convenience to the operation of the ground operator and prevents the unmanned aerial vehicle body from colliding with the wind tower as much as possible.

[0006] The above technical solution has the following defects:

[0007] Although it has certain detection functions, when it moves to the surrounding of the wind wheel, it still cannot overcome the vortex effect and still affects the stable position of the unmanned aerial vehicle. UTILITY MODEL CONTENTS

[0008] The utility model provides a kind of inspection unmanned aerial vehicle for wind turbine, including unmanned aerial vehicle body and the several propellers installed at unmanned aerial vehicle body, the propeller is installed at the several drive shafts of unmanned aerial vehicle body, the bottom end of unmanned aerial vehicle body is equipped with detection module for inspection, the bottom end of unmanned aerial vehicle body is also equipped with support located outside detection module;

[0009] Further comprising fixed wing and shroud group;

[0010] The number of the fixed wing is two, and the two fixed wings are respectively installed on the left and right sides of the unmanned aerial vehicle body through the connecting pieces.

[0011] The shroud group includes several propeller shrouds corresponding to the number of propellers, the middle part of the propeller shroud is fixed with a positioning cap adapted to the drive shaft through several annularly distributed connecting rods, and the several propeller shrouds are fixed to the top of the unmanned aerial vehicle body through the positioning plate.

[0012] Further, the angle between the outer edge of the unmanned aerial vehicle body is provided with a guide groove, and the guide grooves on the same side are communicated through the communication grooves formed in the inner wall of the unmanned aerial vehicle body.

[0013] Further, the connecting piece includes a fitting plate adapted to the angle between the outer edge of the unmanned aerial vehicle body and a clamping block clamped with the guide groove, and the clamping block is fixed to the side of the fitting plate away from the fixed wing.

[0014] Further, the bottom surface of the positioning plate is fitted with the top end of the unmanned aerial vehicle body, the covering part is a slope, and the bottom surface of the positioning plate and the center of the top end of the unmanned aerial vehicle body are both provided with screw grooves, and the two screw grooves are fixed through a screw rod.

[0015] The positioning plate has several flared arms, and each flared arm is inserted into the fixed slot formed in the side of the propeller shroud.

[0016] Further, the diameter of the opening at the top of the propeller shroud is greater than that of the opening at the bottom, and the outer wall of the propeller shroud is an arc surface, and the inner wall of the propeller shroud is fixed with a gauze net located at the top of the propeller.

[0017] Further, the middle part of the gauze net is provided with a central groove for the drive shaft to penetrate, the bottom end of the positioning cap is provided with a groove in contact with the drive shaft, and the groove and the drive shaft are magnetically attracted.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. According to the need, the fixed wing can be added to guide the airflow, avoid the airflow to form vortex around the fuselage, and combined with the streamline shape of the unmanned aerial vehicle body, good flow guiding effect is achieved, and the stability of the unmanned aerial vehicle body around the wind wheel is ensured.

[0020] 2. By adding a propeller guard to the propeller, the direct interference of airflow on the propeller lift can be reduced;

[0021] This allows it to maintain good stability even when it is around the wind turbine. Attached Figure Description

[0022] Fig. 1 This is a schematic diagram of the UAV body and the protective cover assembly separated.

[0023] Fig. 2 This is a schematic diagram of the fixed wing in this utility model.

[0024] In the diagram: 1. UAV body; 2. Propeller; 3. Support frame; 4. Detection module; 5. Angle groove; 6. Flow guide groove; 7. Locking block; 8. Adhesive plate; 9. Fixed wing; 10. Positioning plate; 11. Fixing slot; 12. Propeller cover; 13. Mesh; 14. Positioning cap. Detailed Implementation

[0025] To facilitate understanding of this utility model, the device of this utility model will be described more fully below with reference to the accompanying drawings. Embodiments of the device are shown in the drawings. However, this device can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example

[0028] like Figs. 1-2 As shown, this embodiment provides an inspection drone for wind turbine units, including a drone body 1 and four propellers 2 installed on the drone body 1. The propellers 2 are installed on the four drive shafts of the drone body 1. It should be noted that the number of drive shafts corresponds to the number of propellers 2. In order to reduce wind resistance and increase power, the number can be increased to an even number such as six or eight according to actual needs, which will not be elaborated here.

[0029] The bottom end of the unmanned aerial vehicle body 1 is provided with a detection module 4 for inspection, which includes a gimbal high-definition camera, an infrared thermal imager, a laser radar, an IMU and an AI intelligent analysis system, can efficiently complete the detection work of the wind turbine, including blade, nacelle, tower surface defect AI intelligent analysis, can identify 5mm level defects and other functions, combined with flight control navigation and data processing technology, the unmanned aerial vehicle can automatically detect the blade surface damage and rotating attitude anomaly in complex environment, the above functions are embodied in the technical field, and details are not repeated here, the bottom end of the unmanned aerial vehicle body 1 is also provided with a support 3 outside the detection module 4, which is used to complete the landing function;

[0030] The number of fixed wings 9 is two, which can be made of carbon fiber material. The two fixed wings 9 are respectively installed on the left and right sides of the unmanned aerial vehicle body 1 through connecting pieces. Specifically, the connecting piece includes a fitting plate 8 matched with the angle groove 5 at the outer end of the unmanned aerial vehicle body 1 and a clamping block 7 clamped with the flow guide groove 6. The clamping block 7 is fixed on the side of the fitting plate 8 away from the fixed wing 9. A rubber pad is fixedly sleeved at the clamping block 7 to fill the gap between the flow guide groove 6, which can increase stability and prevent airflow from flowing into the fixed wing 9 to cause oscillation. The addition of the fixed wing 9 can increase the stability of the unmanned aerial vehicle body 1 as a whole. It should be noted that the position of the fixed wing 9 should not block the same side propeller 2.

[0031] The shroud group includes a plurality of propeller shrouds 12 corresponding to the number of propellers 2. The diameter of the top opening of the propeller shroud 12 is greater than that of the bottom opening, and the outer wall of the propeller shroud 12 is arc-shaped to reduce the wind resistance coefficient. The inner wall of the propeller shroud 12 is fixedly provided with a gauze screen 13 located at the top of the propeller 2. The middle part of the propeller shroud 12 is fixedly provided with a positioning cap 14 matched with the driving shaft through four annularly distributed connecting rods. The four propeller shrouds 12 are fixed to the top of the unmanned aerial vehicle body 1 through the positioning plate 10. The bottom surface of the positioning plate 10 is matched with the top end of the unmanned aerial vehicle body 1, and the covered part is a slope. Screw grooves are formed in the center of the bottom surface of the positioning plate 10 and the top end of the unmanned aerial vehicle body 1, and the two screw grooves are fixed by a screw rod.

[0032] A central groove is formed in the middle part of the gauze screen 13 for the driving shaft to penetrate. A recess is formed in the bottom end of the positioning cap 14 to contact the driving shaft. Magnets are embedded in the ends of the recess and the driving shaft in contact with each other, and the magnets are of opposite magnetic poles. The magnets can be adsorbed and stabilized by magnetic force.

[0033] The positioning plate 10 has a plurality of flared arms. Each flared arm is inserted into a fixed insertion slot 11 formed in the side of the propeller shroud 12 to establish a connection relationship between the propeller shrouds 12 and ensure the stability of the whole. Rubber pads can also be added to increase the connection strength.

[0034] In detail, the flow guide grooves 6 are arranged at the corners of the outer edge of the UAV body 1, and the flow guide grooves 6 on the same side are communicated through the communication grooves arranged on the inner wall of the UAV body 1, which can guide the airflow encountered on the front side to reduce the shaking of the fuselage when the fixed wing 9 is not installed.

[0035] It should be noted that the structure of the utility model can be implemented in various different forms, and is not limited to the embodiments, and any equivalent transformation made by those skilled in the art using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, such as loading and unloading of other articles, is included in the protection scope of the utility model.

Claims

1. An inspection drone for a wind turbine, comprising a drone body and a number of propellers mounted at the drone body, characterized in that: The propeller is installed at the driving shaft of the unmanned aerial vehicle body, the bottom end of the unmanned aerial vehicle body is provided with a detection module for inspection, and the bottom end of the unmanned aerial vehicle body is also provided with a bracket outside the detection module. Further comprising a fixed wing and a shroud group; The fixed wing is provided with two fixed wings, and the two fixed wings are respectively installed on the left and right sides of the unmanned aerial vehicle body through connecting pieces. The shroud group comprises a plurality of propeller shrouds corresponding to the number of propellers, the middle part of the propeller shroud is fixed with a positioning cap matched with the driving shaft through a plurality of annular connecting rods, and the plurality of propeller shrouds are fixed on the top of the unmanned aerial vehicle body through a positioning plate.

2. The inspection drone for wind turbines as in claim 1, wherein: The angle between the outer edge of the unmanned aerial vehicle body is provided with a guide groove, and the guide grooves on the same side are communicated through the communication grooves provided on the inner wall of the unmanned aerial vehicle body.

3. The inspection drone for wind turbines of claim 2, wherein: The connecting piece comprises a fitting plate matched with the recess of the angle of the outer edge of the unmanned aerial vehicle body and a clamping block clamped with the guide groove, and the clamping block is fixed on the side of the fitting plate away from the fixed wing.

4. The inspection drone for wind turbines of claim 1, wherein: The bottom surface of the positioning plate is matched with the top end of the unmanned aerial vehicle body, the covering part is a slope, and the bottom surface of the positioning plate and the center of the top end of the unmanned aerial vehicle body are provided with screw grooves, and the two screw grooves are fixed through a screw rod. The positioning plate has a plurality of flared arms, and each flared arm is inserted into the fixed slot on the side of the propeller shroud.

5. The inspection drone for wind turbines of claim 1, wherein: The diameter of the top opening of the propeller shroud is greater than that of the bottom opening, and the outer wall of the propeller shroud is an arc surface, and the inner wall of the propeller shroud is fixed with a gauze net on the top of the propeller.

6. The inspection drone for wind turbines of claim 5, wherein: The middle part of the gauze net is provided with a central groove for the driving shaft to penetrate, the bottom end of the positioning cap is provided with a recess in contact with the driving shaft, and the recess and the driving shaft are magnetically attracted.

Images