A wind turbine noise control device

Abstract

The utility model discloses a wind generating set noise control device, and its technical scheme main points are: including wind driven generator body, the bottom surface fixed mounting of wind driven generator body has the base, the top of wind driven generator body is provided with machine cabin shell, through setting up the box, when discovering that the fairwater and machine cabin shell rub and produce the abnormal sound, can start the water pump and take out the lubricating oil in the box through second connecting pipe, flexible pipe and first connecting pipe, make the lubricating oil that takes out enter the inside of connecting ring, the inside of connecting ring is provided with a plurality of lubricating holes, when the lubricating oil enters the inside of connecting ring, just flow to the gap between machine cabin shell and fairwater through the water outlet pipe in the lubricating hole, thereby lubricating the contact surface between machine cabin shell and fairwater, thereby reduce the sound that rubs between machine cabin shell and fairwater and produces, make the noise that rubs between machine cabin shell and fairwater and produces obtain control, prolong the service life of machine cabin shell and fairwater.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine generator technology, and specifically to a wind turbine generator noise control device. Background Technology

[0002] A wind turbine is a system that converts the kinetic energy of wind into electrical energy. A wind turbine consists of a wind rotor and a generator. The wind rotor contains blades, a hub, and reinforcement components. It generates electricity by rotating the blades under wind power and by rotating the generator head. The wind power supply consists of the wind turbine, the tower supporting the generator, a battery charging controller, an inverter, a load unloader, a grid connection controller, and a battery bank. When a wind turbine generates electricity, it must ensure that the output frequency is constant.

[0003] For example, Chinese patent CN221003001U discloses a wind turbine generator set. This patent utilizes a wireless vibration sensing structure to monitor the vibration and internal equipment status of the wind turbine generator set in real time, understand the unit's operating status, promptly detect abnormal vibrations, prevent unit failures, and improve the unit's safety and stability. The wireless vibration sensing structure also enables remote monitoring, facilitating real-time data acquisition for maintenance personnel to perform fault diagnosis and maintenance management. The upper and lower blades, along with the lifting assembly, allow the upper blades to extend into the lower blades, reducing the risk of blade detachment due to equipment failure and improving equipment safety. However, in this design, since the nacelle and fairing of the wind turbine generator are installed together, friction between the nacelle and fairing generates noise when the nacelle and blades rotate, which can potentially affect the unit's lifespan over time. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a noise control device for wind turbine generator sets, which solves the problem that when the nacelle and the fairing of a wind turbine generator are installed together, friction between the nacelle and the fairing generates noise, which can easily affect the service life of the generator set in the long run.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A noise control device for a wind turbine generator set includes: a wind turbine generator body, a base fixedly mounted on the bottom surface of the wind turbine generator body, a nacelle shell disposed on the top surface of the wind turbine generator body, a mounting block disposed inside the nacelle shell, a shroud disposed at one end of the nacelle shell, and a plurality of blades disposed on the outer circular wall surface of the shroud shell; and a lubrication assembly disposed on the top surface of the nacelle shell for lubricating the space between the nacelle shell and the shroud shell, the lubrication assembly including: a housing disposed on the top surface of the nacelle shell, with a mounting block fixedly mounted on one side of the housing. The enclosure is equipped with a connecting block, and mounting holes are provided on one side of the connecting block and one side of the housing. A second connecting pipe is fixedly sleeved on the inner circular wall of the mounting hole. The second connecting pipe extends into the interior of the housing and is fixedly sleeved with a water pump. A telescopic pipe is fixedly installed at one end of the second connecting pipe, and a first connecting pipe is fixedly installed at one end of the telescopic pipe. A connecting ring is provided at one end of the engine compartment shell. The connecting ring has a hollow structure. Two guide plates are fixedly installed on the bottom surface of the connecting ring. Several lubrication holes are provided on the inner circular wall of the connecting ring, and water outlet pipes are fixedly sleeved on the inner circular wall of the lubrication holes.

[0007] In order to add lubricating oil to the inside of the housing, as a noise control device for wind turbine generator sets according to this utility model, preferably, a liquid inlet is provided on one side of the housing, a connection port is provided on the top surface of the nacelle shell, a connecting plate is provided inside the connection port, the top surface of the connecting plate is fixedly installed to the bottom surface of the housing, support plates are fixedly installed on both sides of the mounting block, an electric push rod is fixedly installed on the top surface of the support plate, and the top surface of the telescopic shaft of the electric push rod is fixedly installed to the bottom surface of the connecting plate.

[0008] In order to detect the water level of the lubricating oil inside the housing, as a noise control device for wind turbine generator sets according to this utility model, preferably, a water level detector is fixedly installed on one side of the inside of the housing.

[0009] To prevent impurities from entering the interior of the housing through the inlet pipe, as a noise control device for wind turbine generator sets according to this utility model, preferably, an inlet pipe is fixedly sleeved on the inner circular wall of the inlet hole, and the outer circular wall of the inlet pipe is threaded, with a threaded cap connected to the threaded outer circular wall of the inlet pipe.

[0010] In order to reduce the noise generated when the connecting plate comes into contact with the nacelle shell inside the connection port, as a noise control device for wind turbine generator set of this utility model, preferably, a rubber sleeve is fixedly fitted on the outer wall surface of the connecting plate.

[0011] To avoid noise generated by contact between the connecting ring and the guide fairing, as a noise control device for wind turbine generator sets according to this utility model, preferably, a rubber strip is fixedly sleeved on the inner circular wall of the connecting ring.

[0012] In order to fix the base in the required position, as a noise control device for wind turbine generator sets according to this utility model, preferably, a rubber layer is fixedly installed on the bottom surface of the base, and a number of fixing holes are respectively opened on the top surface of the base and the rubber layer.

[0013] In summary, the present invention has the following main advantages:

[0014] By designing a housing, when abnormal noise is detected due to friction between the fairing and the nacelle shell, a water pump can be activated to extract lubricating oil from the housing through the second connecting pipe, the telescopic pipe, and the first connecting pipe. The extracted lubricating oil then enters the interior of the connecting ring, which has multiple lubrication holes. Once the lubricating oil enters the connecting ring, it flows through the water outlet pipe within the lubrication holes to the gap between the nacelle shell and the fairing, thereby lubricating the contact surfaces between them. This reduces the noise generated by friction between the nacelle shell and the fairing, controls the noise generated by friction between the nacelle shell and the fairing, and extends the service life of both the nacelle shell and the fairing. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the flow guide structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the cabin shell structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the mounting block structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the box structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the water level detector of this utility model.

[0021] Reference numerals: 1. Wind turbine body; 2. Base; 3. Fixing port; 4. Rubber layer; 5. Nacelle shell; 6. Connection port; 7. Connecting plate; 8. Shield; 9. Blade; 10. Mounting block; 11. Housing; 12. Liquid inlet; 13. Liquid inlet pipe; 14. Threaded cap; 15. Connecting block; 16. Mounting hole; 17. Telescopic pipe; 18. First connecting pipe; 19. Second connecting pipe; 20. Water pump; 21. Water level detector; 22. Connecting ring; 23. Lubrication hole; 24. Water outlet pipe; 25. Rubber strip; 26. Shield; 27. Support plate; 28. Electric push rod; 29. ​​Rubber sleeve. Detailed Implementation

[0022] 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.

[0023] Example 1

[0024] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A noise control device for a wind turbine generator set includes a wind turbine generator body 1, a base 2 fixedly mounted on the bottom surface of the wind turbine generator body 1, a nacelle shell 5 disposed on the top surface of the wind turbine generator body 1, an installation block 10 disposed inside the nacelle shell 5, a guide vane 8 disposed at one end of the nacelle shell 5, and a plurality of blades 9 disposed on the outer circular wall surface of the guide vane 8; and a lubrication assembly disposed on the top surface of the nacelle shell 5 for lubricating the space between the nacelle shell 5 and the guide vane 8, the lubrication assembly including a housing 11. The housing 11 is located on the top surface of the cabin shell 5. A connecting block 15 is fixedly installed on one side of the housing 11. Mounting holes 16 are provided on both sides of the connecting block 15 and the housing 11. A second connecting pipe 19 is fixedly sleeved on the inner circular wall of the mounting hole 16. The second connecting pipe 19 extends into the interior of the housing 11 and is fixedly sleeved with a water pump 20. A telescopic pipe 17 is fixedly installed at one end of the second connecting pipe 19, and a first connecting pipe 18 is fixedly installed at one end of the telescopic pipe 17. A connecting ring 22 is provided at one end of the cabin shell 5. The connecting ring 22 has a hollow structure. Two guide plates 26 are fixedly installed on the bottom surface of the connecting ring 22. Several lubrication holes 23 are opened on the inner circular wall of the connecting ring 22. Water outlet pipes 24 are fixedly sleeved on the inner circular wall of the lubrication holes 23. By setting a housing 11, the inside of the housing 11 stores lubricating oil. When abnormal noise is found caused by friction between the guide shield 8 and the engine compartment shell 5, the water pump 20 can be started to draw out the lubricating oil in the housing 11 through the second connecting pipe 19, the telescopic pipe 17 and the first connecting pipe 18, so that the drawn lubricating oil enters the engine compartment. The lubricating oil enters the interior of the connecting ring 22, which has multiple lubrication holes 23. When the lubricating oil enters the interior of the connecting ring 22, it flows through the water outlet pipe 24 in the lubrication hole 23 to the gap between the nacelle shell 5 and the fairing 8, thereby lubricating the contact surface between the nacelle shell 5 and the fairing 8. This reduces the noise generated by the friction between the nacelle shell 5 and the fairing 8, controls the noise generated by the friction between the nacelle shell 5 and the fairing 8, and extends the service life of the nacelle shell 5 and the fairing 8.

[0025] Example 2

[0026] Based on the above embodiment 1, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A liquid inlet 12 is provided on one side of the housing 11, and a connection port 6 is provided on the top surface of the engine compartment shell 5. A connecting plate 7 is provided inside the connection port 6. The top surface of the connecting plate 7 is fixedly installed to the bottom surface of the housing 11. Support plates 27 are fixedly installed on both sides of the mounting block 10. An electric push rod 28 is fixedly installed on the top surface of the support plate 27. The top surface of the telescopic shaft of the electric push rod 28 is fixedly installed to the bottom surface of the connecting plate 7. By setting the electric push rod 28, the electric push rod 28 can be activated, causing the telescopic shaft of the electric push rod 28 to move downward and bring the housing 11 back to the engine compartment shell. Inside 5, the telescopic tube 17 extends, allowing lubricating oil to be added to the inside of the housing 11 through the inlet port 12. This prevents interference with lubrication between the engine compartment shell 5 and the fairing 8. After adding the oil, the electric push rod 28 is activated to raise the housing 11 back to its original position. A water level detector 21 is fixedly installed on one side of the inside of the housing 11. By setting the water level detector 21, the water level detector 21 can detect the water level of the lubricating oil inside the housing 11, allowing for timely addition when the water level is too low. An inlet pipe 13 is fixedly sleeved on the inner circular wall of the inlet port 12, allowing the oil to enter. The outer wall of pipe 13 is threaded, and a threaded cap 14 is threadedly connected to the outer wall of inlet pipe 13. By setting the threaded cap 14, after adding lubricating oil to the inside of housing 11 through inlet pipe 13, the threaded cap 14 can be screwed onto inlet pipe 13 to prevent impurities from entering the inside of housing 11 through inlet pipe 13. A rubber sleeve 29 is fixedly fitted on the outer wall of connecting plate 7. By setting the rubber sleeve 29, when the guide shroud 8 and blade 9 rotate, the rubber sleeve 29 can lower the connecting plate 7 and the engine compartment 5 inside the connection port 6. To prevent noise from being generated during contact, a rubber strip 25 is fixedly fitted onto the inner circular wall of the connecting ring 22. By setting the rubber strip 25, noise generated during contact between the connecting ring 22 and the guide shield 8 can be avoided. A rubber layer 4 is fixedly installed on the bottom surface of the base 2. Several fixing holes 3 are respectively opened on the top surface of the base 2 and the rubber layer 4. In this solution, the electric push rod 28 and the water pump 20 are powered and controlled by the power supply system and control system inside the engine compartment shell 5. This power supply and control method is existing technology, so it will not be described in detail in this solution.

[0027] Working principle: Please refer to Figures 1-6As shown, by setting the housing 11, the electric push rod 28 can be activated first, causing the telescopic shaft of the electric push rod 28 to move downwards and bring the housing 11 back into the engine compartment 5. At this time, the telescopic tube 17 extends, and then lubricating oil can be added into the housing 11 through the liquid inlet 12. After adding, the electric push rod 28 is activated to raise the housing 11 to its original position. The water level detector 21 can detect the water level of the lubricating oil in the housing 11. When the water level is too low, it can be added in time. When abnormal noise is found caused by the friction between the guide shield 8 and the engine compartment 5, the water pump 20 can be activated to pump the lubricating oil in the housing 11 through the second connection. Pipe 19, telescopic pipe 17 and first connecting pipe 18 are pulled out, allowing the extracted lubricating oil to enter the interior of connecting ring 22. Multiple lubrication holes 23 are opened inside the connecting ring 22. After the lubricating oil enters the interior of the connecting ring 22, it flows through the water outlet pipe 24 in the lubrication hole 23 to the gap between the nacelle shell 5 and the fairing 8, thereby lubricating the contact surface between the nacelle shell 5 and the fairing 8, reducing the noise generated by the friction between the nacelle shell 5 and the fairing 8, controlling the noise generated by the friction between the nacelle shell 5 and the fairing 8, and extending the service life of the nacelle shell 5 and the fairing 8.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A noise control device for a wind turbine generator set, characterized in that, include: A wind turbine body (1) is provided with a base (2) fixedly installed on the bottom surface of the wind turbine body (1), and a nacelle shell (5) is provided on the top surface of the wind turbine body (1). An installation block (10) is provided inside the nacelle shell (5), and a flow guide (8) is provided at one end of the nacelle shell (5). Several blades (9) are provided on the outer circular wall surface of the flow guide (8). A lubrication assembly is disposed on the top surface of the nacelle shell (5) for lubricating the nacelle shell (5) and the fairing (8). The lubrication assembly includes: a housing (11) disposed on the top surface of the nacelle shell (5), a connecting block (15) fixedly installed on one side of the housing (11), and mounting holes (16) provided on one side of the connecting block (15) and one side of the housing (11). A second connecting pipe (19) is fixedly sleeved on the inner circular wall of the mounting hole (16), and the second connecting pipe (19) extends to... A water pump (20) is fixedly fitted inside the housing (11). A telescopic pipe (17) is fixedly installed at one end of the second connecting pipe (19). A first connecting pipe (18) is fixedly installed at one end of the telescopic pipe (17). A connecting ring (22) is provided at one end of the cabin shell (5). The connecting ring (22) is a hollow structure. Two guide plates (26) are fixedly installed on the bottom surface of the connecting ring (22). Several lubrication holes (23) are opened on the inner circular wall of the connecting ring (22). A water outlet pipe (24) is fixedly fitted on the inner circular wall of the lubrication hole (23).

2. The wind turbine generator noise control device according to claim 1, characterized in that: A liquid inlet hole (12) is provided on one side of the housing (11), and a connection port (6) is provided on the top surface of the engine compartment shell (5). A connecting plate (7) is provided inside the connection port (6). The top surface of the connecting plate (7) is fixedly installed with the bottom surface of the housing (11). Support plates (27) are fixedly installed on both sides of the mounting block (10). An electric push rod (28) is fixedly installed on the top surface of the support plate (27). The top surface of the telescopic shaft of the electric push rod (28) is fixedly installed with the bottom surface of the connecting plate (7).

3. The wind turbine generator noise control device according to claim 1, characterized in that: A water level detector (21) is fixedly installed on one side of the inside of the box (11).

4. The wind turbine generator noise control device according to claim 2, characterized in that: The inner circular wall of the liquid inlet hole (12) is fixedly sleeved with a liquid inlet pipe (13), and the outer circular wall of the liquid inlet pipe (13) is threaded, and the outer circular wall of the liquid inlet pipe (13) is threadedly connected with a threaded cap (14).

5. A wind turbine generator noise control device according to claim 2, characterized in that: A rubber sleeve (29) is fixedly fitted onto the outer wall of the connecting plate (7).

6. The wind turbine generator noise control device according to claim 1, characterized in that: A rubber strip (25) is fixedly sleeved on the inner circular wall of the connecting ring (22).

7. A wind turbine generator noise control device according to claim 1, characterized in that: A rubber layer (4) is fixedly installed on the bottom surface of the base (2), and a number of fixing holes (3) are respectively opened on the top surface of the base (2) and the rubber layer (4).

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