Offshore wind plant blade comprehensive detection device

Abstract

The utility model discloses a comprehensive detection device for blades of an offshore wind plant, which comprises an outer casing, and columns are fixed at the bottom end of the outer casing. The device has the advantages that through the design of the monitoring camera and the heat preservation layer, the monitoring camera can replace an unmanned aerial vehicle, workers can conveniently check the conditions of the blades at any time, whether the blades are damaged or not can be found in time, and it can be ensured that the device cannot be damaged due to changes of the offshore temperature through the heat preservation layer; through the design of a temperature sensor and a temperature controller, the temperature sensor is arranged in the blade, the temperature sensor can be protected, the temperature sensor cannot generate errors due to other problems, and meanwhile it can be ensured that the temperature sensor can detect whether the blade is frozen or not; when the blades are frozen, data can be transmitted to the temperature controller, and the alarm is started through the temperature controller, so that the alarm reminds a worker that the blades are frozen.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, and particularly relates to a comprehensive detection device for blades of an offshore wind farm. Background Art

[0002] The blade is an important component of a wind turbine. Its design, manufacture, and operating status will directly affect the performance and power generation efficiency of the whole machine. It is known as the "soul" of the wind turbine. In the early days, the power capacity of wind turbines was very small, and most of them used wooden blades. A whole wooden square with good strength was used as the blade longitudinal beam to bear the forces and bending moments that the blade must withstand during operation. However, wooden blades are not easy to be twisted and formed, and their strength is not high. They are also easy to corrode in a humid environment. In addition, as the blade size increases, wooden blades are increasingly unable to meet the requirements of large and medium-sized wind turbines. Therefore, wooden blades have gradually been replaced by other materials. In modern times, the blades of wind turbines began to adopt a structural form with steel pipes or profiled steels as longitudinal beams, steel plates as rib beams, filled with foam plastics inside, and covered with glass-reinforced skins outside. The steel beam structure bears most of the loads, and the fiberglass skin forms the aerodynamic shape. The cross-sections of the steel pipes and profiled steels of the blade longitudinal beam gradually become smaller from the blade root to the blade tip, so as to meet the requirements of the twisted blade and reduce the blade weight.

[0003] At present, the comprehensive detection device for blades of an offshore wind farm mainly uses drones to detect the offshore blades. By observing whether there are damages on the blades through drones, but the method of using drones cannot observe the blades of the offshore wind farm at any time, making it impossible to timely detect the damages of the blades. Moreover, the temperature change in the sea is large, which will cause damages to the device due to the large temperature change. At the same time, the existing comprehensive detection device for blades of an offshore wind farm usually judges whether the blades are frozen by using the relationship characteristics and experience between the wind speed and the unit operation data after the blades of the wind turbine are frozen. However, this method depends on the data detected by the unit itself. Once the sensors of the unit fail or the data is interfered, it will cause misjudgment, making it impossible to timely replace the damaged part of the device. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] The technical problem to be solved by the utility model is to provide a comprehensive detection device for blades of an offshore wind farm with a monitoring function and capable of monitoring temperature in view of the current situation of the prior art.

[0006] (2) Technical Solutions

[0007] The utility model is realized through the following technical solutions: The utility model provides a comprehensive detection device for blades of an offshore wind farm, including an outer housing. A column is fixed at the bottom end of the outer housing. Reflective stickers are arranged in the middle of the column. A support disc is arranged at the bottom end of the column. A base is fixed in the middle of the bottom end of the support disc. An anti-corrosion layer is coated on the outer side of the base. A monitoring camera is fixed at the top end of the outer housing. A heat preservation layer is fixed around the inner part of the outer housing. A support plate is arranged inside the outer housing. A small generator is installed on one side of the support plate on the outer housing. A temperature controller is arranged above the small generator. A wire is arranged on one side of the small generator on the support plate. An alarm is arranged on the other side of the wire. The other side of the small generator is connected to a rotating shaft. Three blades are evenly arranged on the other side of the rotating shaft. A warning sticker is arranged in the middle of the blade. A blade tip is arranged at the top end of the blade. A thickening piece is fixed on the inner side of the blade. A main beam cap is arranged on one side of the thickening piece on the blade. A waist plate is installed in the middle of the inner side of the blade. A temperature sensor is fixed at the top end of the waist plate. A blade root is arranged at the bottom end of the blade.

[0008] Further, the outer housing is made of steel material. The outer housing is bolted to the column. The outer housing is welded to the monitoring camera. The housing of the monitoring camera is made of steel material.

[0009] By adopting the above technical solutions, the outer housing is made of steel because steel materials have the advantages of corrosion resistance, high strength, and light weight, and are suitable for manufacturing the foundation of high towers and large wind turbines. The monitoring camera can supervise the condition of the blades in real time, ensuring that the staff can timely discover whether there are problems with the blades.

[0010] Further, the column is made of steel material. The column is welded to the support disc. The support disc is made of fiberglass material. The support disc is welded to the base. The base is made of fiberglass material.

[0011] By adopting the above technical solutions, the support disc and the base are made of fiberglass material because fiberglass materials are light in weight and not easily corroded, have good damping performance, and are not easily vibrated, which can ensure the overall stability of the device. The support disc can provide a foothold for the staff and facilitate the staff to observe the device at a close distance.

[0012] Further, the base is coated with the anti-corrosion layer. The column is bonded to the reflective sticker. The outer housing is bolted to the support plate. The support plate is welded to the small generator. The outer housing is bolted to the heat preservation layer. The heat preservation layer is made of glass fiber material.

[0013] By adopting the above technical solution, the thermal insulation layer is made of fiberglass material because it has the advantages of good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength, which can improve the service life of the device at sea. The small generator can provide power for the alarm.

[0014] Furthermore, the outer housing is bolted to the rotating shaft, the rotating shaft is bolted to the blade, and the warning sticker is adhered to the blade.

[0015] By adopting the above technical solution, the warning sticker can provide a warning to others. At the same time, the rotating shaft can ensure the rotation of the blade, and the blade can drive the rotation of the rotating shaft.

[0016] Furthermore, the blade is welded to the blade tip, the blade root is bolted to the rotating shaft, the blade is welded to the waist plate, and the blade root is formed on the blade.

[0017] By adopting the above technical solution, the waist plate can ensure the normal rotation of the blade. At the same time, the waist plate can ensure the stability of the middle part of the blade. The blade tip is designed with a stainless steel screw, which is installed at the tip or middle of the blade, equivalent to a lightning rod, playing the role of attracting lightning and avoiding direct lightning strikes on the blade tip, thereby realizing lightning protection for the device.

[0018] Furthermore, the small generator is electrically connected to the wire, the wire is electrically connected to the alarm, the blade is welded to the main beam cap, the thickening piece is formed on the blade, the waist plate is bolted to the temperature sensor, and the thickening piece is made of liquid epoxy resin material.

[0019] By adopting the above technical solution, the temperature sensor can transmit the temperature of the blade to the inside of the temperature controller. The thickening piece made of double liquid epoxy resin material can ensure that the blade is not easily broken.

[0020] (III) Beneficial effects

[0021] The present utility model has the following beneficial effects compared with the prior art:

[0022] 1. To solve the problem that the existing comprehensive detection device for offshore wind farm blades observes whether there is damage to the blades through drones, but the method using drones cannot observe the blades of offshore wind farms at any time, making it impossible to detect blade damage in a timely manner, and the large temperature change at sea will cause damage to the device due to the large temperature change. The utility model designs a monitoring camera and a heat preservation layer. The monitoring camera can replace the drone and facilitate the staff to check the condition of the blades at any time, and can detect whether there is damage to the blades in a timely manner. The heat preservation layer can ensure that the device will not be damaged due to the change of sea temperature and extend the service life of the device;

[0023] 2. To solve the problem that the existing comprehensive detection device for offshore wind farm blades usually judges whether the blades are frozen by using the relationship characteristics and experience between the wind speed after the blades of the wind turbine are frozen and the operation data of the unit. However, this method depends on the data detected by the unit itself. Once the sensor of the unit fails or the data is interfered, it will cause misjudgment and the damaged part of the device cannot be replaced in a timely manner. The utility model designs a temperature sensor and a temperature controller. The temperature sensor is arranged inside the blade to protect the temperature sensor so that the temperature sensor will not produce errors due to other problems. At the same time, it can ensure that the temperature sensor can detect whether the blade is frozen. When the blade is frozen, the data can be transmitted to the temperature controller, and the alarm is started through the temperature controller, so that the alarm reminds the staff that the blade is frozen. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the front view of a comprehensive detection device for offshore wind farm blades according to the utility model;

[0025] Figure 2 is the structural schematic diagram of the outer casing of a comprehensive detection device for offshore wind farm blades according to the utility model;

[0026] Figure 3 is the structural schematic diagram of the blade of a comprehensive detection device for offshore wind farm blades according to the utility model.

[0027] The description of the reference numerals is as follows:

[0028] 1. Temperature controller; 2. Heat preservation layer; 3. Outer casing; 4. Monitoring camera; 5. Blade; 6. Small generator; 7. Electric wire; 8. Alarm; 9. Support plate; 10. Rotating shaft; 11. Waist plate; 12. Warning sticker; 13. Column; 14. Reflective sticker; 15. Base; 16. Support disc; 17. Anticorrosion layer; 18. Blade tip; 19. Temperature sensor; 20. Blade root; 21. Thickening piece; 22. Main beam cap. DETAILED DESCRIPTION OF THE INVENTION

[0029] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0030] As Figures 1 - 3 shown, a comprehensive detection device for blades of an offshore wind farm in this embodiment includes an outer casing 3. The outer casing 3 is made of steel because steel materials have the advantages of corrosion resistance, high strength, and light weight, and are suitable for manufacturing the foundations of high towers and large wind turbine generators. The monitoring camera 4 can monitor the condition of the blade 5 in real time, ensuring that the staff can promptly discover whether there are problems with the blade 5. A pillar 13 is fixed at the bottom end of the outer casing 3. A reflective sticker 14 is arranged in the middle of the pillar 13. A support disc 16 is arranged at the bottom end of the pillar 13. A base 15 is fixed in the middle of the bottom end of the support disc 16. An anti-corrosion layer 17 is applied to the outside of the base 15. The monitoring camera 4 is fixed at the top end of the outer casing 3. A heat-insulating layer 2 is fixed around the inside of the outer casing 3. A support plate 9 is arranged inside the outer casing 3. A small generator 6 is installed on one side of the support plate 9 on the outer casing 3. The small generator 6 can provide power for the alarm 8. A temperature controller 1 is arranged on the top of the small generator 6. A wire 7 is arranged on one side of the small generator 6 on the support plate 9. The alarm 8 is arranged on the other side of the wire 7. The small generator 6 is connected to a rotating shaft 10 on the other side. Three blades 5 are evenly arranged on the other side of the rotating shaft 10. A warning sticker 12 is arranged in the middle of the blade 5. A blade tip 18 is arranged at the top end of the blade 5. A thickening piece 21 is fixed inside the blade 5. A main beam cap 22 is arranged on one side of the thickening piece 21 on the blade 5. A waist plate 11 is installed in the middle of the inside of the blade 5. A temperature sensor 19 is fixed at the top of the waist plate 11. The temperature sensor 19 can transmit the temperature of the blade 5 to the inside of the temperature controller 1. A blade root 20 is arranged at the bottom end of the blade 5.

[0031] As Figures 1 - 3As shown, in this embodiment, the outer casing 3 is made of steel material. The outer casing 3 is bolted to the column 13. The outer casing 3 is welded to the monitoring camera 4. The outer shell of the monitoring camera 4 is made of steel material. The column 13 is made of steel material. The column 13 is welded to the support disc 16. The support disc 16 is made of fiberglass material. The reason why the support disc 16 and the base 15 are made of fiberglass material is that fiberglass material is lightweight and not easily corroded, has good damping performance, and is not easily vibrated, which can ensure the overall stability of the device. The support disc 16 can provide a foothold for the staff and facilitate the staff to observe the device at a close distance. The support disc 16 is welded to the base 15. The base 15 is made of fiberglass material and is coated with an anti-corrosion layer 17. The column 13 is bonded to the reflective sticker 14. The outer casing 3 is bolted to the support plate 9. The support plate 9 is welded to the small generator 6. The outer casing 3 is bolted to the insulation layer 2. The insulation layer 2 is made of glass fiber material.

[0032] As Figures 1 - 3 shown, in this embodiment, the outer casing 3 is bolted to the rotating shaft 10. The rotating shaft 10 is bolted to the blade 5. The warning sticker 12 is bonded to the blade 5. The blade 5 is welded to the blade tip 18. The blade root 20 is bolted to the rotating shaft 10. The blade 5 is welded to the waist plate 11. The waist plate 11 can ensure the normal rotation of the blade 5. At the same time, the waist plate 11 can ensure the stability of the middle part of the blade 5. The small generator 6 is electrically connected to the wire 7. The wire 7 is electrically connected to the alarm 8. The blade 5 is welded to the main beam cap 22. The thickening piece 21 is formed on the blade 5. The waist plate 11 is bolted to the temperature sensor 19. The thickening piece 21 is made of liquid epoxy resin material.

[0033] The specific implementation process of this embodiment is as follows: When in use, when the wind blows across the front and back of the blade 5, a lift force will be generated due to the pressure difference, causing the wind turbine to rotate and pass through the gearbox, thereby driving the rotor of the wind power generator, converting the kinetic energy of the wind into the kinetic energy of the generator rotor, and then converting the kinetic energy of the rotor into electrical energy output. A small part of the electrical energy is supplied to the small generator 6, so that the small generator 6 can ensure the normal operation of the temperature controller 1, the alarm 8 and the monitoring camera 4. The temperature of the blade 5 can be monitored through the temperature sensor 19. When the temperature is too low and the blade 5 freezes, the alarm 8 can be made to sound an alarm. At the same time, the monitoring camera 4 can record the state of the blade 5 at any time. The staff can observe the blade 5 of the device through the monitoring camera 4 without using a drone for detection.

[0034] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A comprehensive detection device for blades of offshore wind farms, characterized in that: The invention comprises an outer casing (3), a column (13) is fixed at the bottom end of the outer casing (3), a reflective sticker (14) is arranged in the middle of the column (13), a supporting disc (16) is arranged at the bottom end of the column (13), a base (15) is fixed in the middle of the bottom end of the supporting disc (16), an anti-corrosion layer (17) is applied on the outer side of the base (15), a monitoring camera (4) is fixed at the top end of the outer casing (3), a heat preservation layer (2) is fixed around the inside of the outer casing (3), a support plate (9) is arranged inside the outer casing (3), a small generator (6) is installed on one side of the outer casing (3) located on the support plate (9), a temperature controller (1) is arranged at the top end of the small generator (6), and the support plate (9) An electric wire (7) is arranged on one side of the small generator (6), an alarm (8) is arranged on the other side of the electric wire (7), a rotating shaft (10) is connected to the other side of the small generator (6), three blades (5) are evenly arranged on the other side of the rotating shaft (10), a warning sticker (12) is arranged in the middle of the blade (5), a blade tip (18) is arranged at the top of the blade (5), a thickening sheet (21) is fixed on the inner side of the blade (5), a main beam cap (22) is arranged on the blade (5) on one side of the thickening sheet (21), a waist plate (11) is installed in the middle of the inner side of the blade (5), a temperature sensor (19) is fixed at the top of the waist plate (11), and a blade root (20) is arranged at the bottom of the blade (5).

2. According to claim 1, a comprehensive detection device for offshore wind farm blades is characterized in that: The outer casing (3) is made of steel material, the outer casing (3) is bolted to the column (13), the outer casing (3) is welded to the monitoring camera (4), and the outer shell of the monitoring camera (4) is made of steel material.

3. The offshore wind farm blade comprehensive detection device according to claim 1, characterized in that: The column (13) is made of steel, the column (13) is welded to the supporting disc (16), the supporting disc (16) is made of glass fiber reinforced plastic, the supporting disc (16) is welded to the base (15), and the base (15) is made of glass fiber reinforced plastic.

4. The offshore wind farm blade comprehensive detection device according to claim 1, characterized in that: The base (15) is fully coated with the anti-corrosion layer (17), the column (13) is bonded to the reflective tape (14), the outer casing (3) is bolted to the support plate (9), the support plate (9) is welded to the small generator (6), the outer casing (3) is bolted to the insulation layer (2), and the insulation layer (2) is made of glass fiber material.

5. The offshore wind farm blade comprehensive detection device according to claim 1, characterized in that: The outer casing (3) is bolted to the rotating shaft (10), the rotating shaft (10) is bolted to the blade (5), and the warning sticker (12) is bonded to the blade (5).

6. The offshore wind farm blade comprehensive detection device according to claim 1, characterized in that: The blade (5) is welded to the blade tip (18), the blade root (20) is bolted to the rotating shaft (10), and the blade (5) is welded to the waist plate (11).

7. The offshore wind farm blade comprehensive detection device according to claim 1, characterized in that: The small generator (6) is electrically connected to the electric wire (7), the electric wire (7) is electrically connected to the alarm (8), the blade (5) is welded to the main beam cap (22), the thickening sheet (21) is formed on the blade (5), the waist plate (11) is bolted to the temperature sensor (19), and the thickening sheet (21) is made of liquid epoxy resin.

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