Wind driven generator cabin with shock absorption and noise reduction functions

Abstract

The invention belongs to the technical field of wind driven generators, and particularly relates to a shock absorption and noise reduction wind driven generator cabin which comprises a cabin shell, a heat dissipation piece is arranged on one side face of the cabin shell, two arc-shaped blocks are fixedly connected to the bottom face of the cabin shell, and the bottom faces of the two arc-shaped blocks are jointly and fixedly connected with a connecting base. The inner ring of the connecting base is connected with a threaded connecting ring, the bottom end of the threaded connecting ring is fixedly connected with an annular rubber damping pad, and two sets of spring vibration isolators are fixedly installed on the inner bottom wall of the cabin shell. Through the arrangement of the connecting base and the annular rubber damping pad, vibration transmitted downwards by the cabin shell can be buffered, direct impact on a tower drum is reduced, the damping table can be jointly supported through the two spring vibration isolators and the two air pressure dampers arranged in the cabin shell, and compared with traditional single rubber pad damping equipment, the damping equipment has the advantages that the damping efficiency is improved, and the damping effect is better. According to the combined damping structure, the damping performance can be enhanced, and noise generated by vibration can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind power generators, in particular to a shock-absorbing and noise-reducing wind power generator nacelle. BACKGROUND

[0002] With the continuous growth of global demand for clean energy, wind power generation, as a clean and renewable energy acquisition method, has been widely applied and developed. The working principle of a wind power generator is to capture wind energy through wind blades and convert it into mechanical energy, which in turn drives the generator to generate electricity. In this process, the wind power generator nacelle, as a key component, contains core equipment such as generators and gearboxes. However, when the wind power generator is running, the high-speed rotation of the blades causes strong friction and interaction with the air, which can cause significant vibration. At the same time, the generator, gearbox and other equipment in the nacelle can also produce vibration during operation due to the meshing and rotation of mechanical components. These vibrations not only reduce the stability of the equipment, but also shorten the service life of the equipment. Moreover, the noise generated by the vibration can affect the surrounding environment and residents' lives, especially when the wind farm is close to residential areas or ecological protection areas, the noise problem is more prominent.

[0003] Currently, the wind power generator nacelle usually installs equipment in a rigid connection manner, which makes the vibration easily transmitted and amplified between components. Traditional rubber pad shock-absorbing equipment has limited shock-absorbing and noise-reducing effect in complex operating environments, making it difficult to meet the increasingly stringent environmental protection requirements and equipment stability. Moreover, the current noise reduction technology mainly focuses on installing sound insulation materials on the inner wall of the nacelle. However, this method can only reduce the propagation of noise and cannot fundamentally reduce the generation of noise, thereby reducing the shock-absorbing and noise-reducing effect of the nacelle. Therefore, the present application provides a shock-absorbing and noise-reducing wind power generator nacelle. SUMMARY

[0004] The present application provides a shock-absorbing and noise-reducing wind power generator nacelle to solve the problem that the current wind power generator nacelle usually installs equipment in a rigid connection manner, which makes the vibration easily transmitted and amplified between components. Traditional rubber pad shock-absorbing equipment has limited shock-absorbing and noise-reducing effect in complex operating environments, making it difficult to meet the increasingly stringent environmental protection requirements and equipment stability. Moreover, the current noise reduction technology mainly focuses on installing sound insulation materials on the inner wall of the nacelle. However, this method can only reduce the propagation of noise and cannot fundamentally reduce the generation of noise, thereby reducing the shock-absorbing and noise-reducing effect of the nacelle.

[0005] The present application provides a shock-absorbing and noise-reducing wind power generator nacelle, comprising: a nacelle shell; a connecting assembly for connecting the nacelle shell and the tower drum; a shock-absorbing platform arranged in the nacelle shell for installing a generator gearbox; A damping assembly is arranged in the cabin shell and used to connect the cabin shell and the damping platform.

[0006] In one possible design, the connecting assembly comprises: An arc-shaped block, one end of which is connected to the outer wall of the cabin shell; A connecting seat arranged below the arc-shaped block and connected to the other end of the arc-shaped block, the inner ring of the connecting seat being connected with a threaded connecting ring; A ring-shaped rubber damping pad arranged below the connecting seat and connected to the bottom end of the connecting seat and the bottom end of the threaded connecting ring respectively.

[0007] In one possible design, the damping assembly comprises: A spring shock absorber arranged in the cabin shell, one end of which is connected to the inner bottom wall of the cabin shell and the other end of which is connected to the damping platform; A gas pressure shock absorber arranged in the cabin shell, one end of which is connected to the inner bottom wall of the cabin shell and the other end of which is connected to the damping platform.

[0008] In one possible design, opposite sides of the damping platform are respectively provided with damping support plates, the damping support plates being formed with limiting blocks, and opposite inner walls of the cabin shell are respectively provided with limiting seats, the limiting seats being provided with limiting grooves facing the limiting blocks, the inner walls of the limiting grooves being in sliding fit with the surfaces of the limiting blocks.

[0009] In one possible design, opposite ends of the limiting grooves are respectively provided with rubber buffer pads, and the limiting blocks are located between the two rubber buffer pads.

[0010] In one possible design, the upper surface of the damping platform is fixedly connected with a mounting carrier plate, and the upper surface of the mounting carrier plate is provided with a plurality of threaded mounting grooves.

[0011] In one possible design, one side of the cabin shell is provided with a heat dissipation member, and the heat dissipation member comprises: A heat dissipation cover arranged at one side of the cabin shell; A heat dissipation support plate installed in the heat dissipation cover; A heat dissipation fan installed on the heat dissipation support plate; A protective mesh plate installed at the air outlet of the heat dissipation cover.

[0012] In one possible design, a partition plate is arranged between the heat dissipation member and the damping platform, the partition plate is provided with circularly arranged ventilation holes, and a circular sound-absorbing plate is fixedly installed on the partition plate.

[0013] In one possible design, the inner wall of the cabin shell is provided with a plurality of arc-shaped sound-absorbing plates, and the arc-shaped sound-absorbing plates are located at one side of the heat dissipation member.

[0014] In one possible design, one end of the cabin shell is fixedly provided with an end plate, and a connecting hole is formed in one side of the end plate.

[0015] The beneficial effects of the present application are as follows: The shock-absorbing and noise-reducing wind turbine cabin of the present application can buffer the downward vibration transmitted by the cabin shell, reduce the direct impact on the tower, and support the shock-absorbing platform through the two groups of spring shock absorbers and two groups of air pressure shock absorbers arranged inside the cabin shell. Compared with the traditional single rubber pad shock-absorbing device, this combined shock-absorbing structure can reduce the influence of the vibration of the equipment above the shock-absorbing platform on the shock-absorbing platform, improve the stability of the equipment operation inside the cabin shell, and limit the excessive shaking of the shock-absorbing platform and absorb part of the vibration energy when the shock-absorbing platform is displaced due to vibration, thereby reducing the noise generated by the vibration and improving the noise reduction effect.

[0016] The shock-absorbing and noise-reducing wind turbine cabin of the present application can buffer the downward vibration transmitted by the cabin shell, reduce the direct impact on the tower, and support the shock-absorbing platform through the two groups of spring shock absorbers and two groups of air pressure shock absorbers arranged inside the cabin shell. Compared with the traditional single rubber pad shock-absorbing device, this combined shock-absorbing structure can reduce the influence of the vibration of the equipment above the shock-absorbing platform on the shock-absorbing platform, improve the stability of the equipment operation inside the cabin shell, and limit the excessive shaking of the shock-absorbing platform and absorb part of the vibration energy when the shock-absorbing platform is displaced due to vibration, thereby reducing the noise generated by the vibration and improving the noise reduction effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0018] Figure 1 is a front view of the structure of the present application; Figure 2 is a front view of the structure of the present application; Figure 3 is a front view of the structure of the present application; Figure 4 is a front view of the structure of the present application; Figure 5 is a front view of the structure of the present application; Figure 6 is a front view of the structure of the present application; Figure 4 is an enlarged schematic view of the structure at A in the present application.

[0019] Reference signs: 1, cabin shell; 2, heat dissipation piece; 201, heat dissipation cover; 202, heat dissipation support plate; 203, heat dissipation fan; 204, protective mesh plate; 3, arc-shaped block; 4, connecting seat; 5, threaded connecting ring; 6, annular rubber shock pad; 7, shock pad; 8, pneumatic shock absorber; 9, spring shock absorber; 10, partition plate; 11, circular sound-absorbing plate; 12, sound-absorbing top plate; 13, air inlet mesh plate; 14, second sound-insulating side plate; 15, first sound-insulating side plate; 16, ventilation hole; 17, limiting seat; 18, shock support plate; 19, rubber buffer pad; 20, limiting groove; 21, limiting block; 22, arc-shaped sound-absorbing plate; 23, mounting carrier plate; 24, threaded mounting groove; 25, end plate; 26, connecting hole; 27, fixing hole; 28, air inlet hole. DETAILED DESCRIPTION

[0020] The technical solutions of the present application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] The technical solutions of the present application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Figures 1-6 The shock-absorbing and noise-reducing wind turbine cabin provided in the embodiments of the present application will be described below.

[0022] Referring to Figures 1-6 The shock-absorbing and noise-reducing wind turbine cabin provided in the embodiments of the present application includes a cabin shell 1. The cabin shell 1 adopts a structure of double-layer steel plates with sound-absorbing cotton sandwiched therebetween. This design can prevent the noise generated by the operation of the generator, gear box and other equipment inside the cabin from being transmitted outward. One side surface of the cabin shell 1 is provided with a heat dissipation piece 2. The bottom surface of the cabin shell 1 is fixedly connected with two arc-shaped blocks 3. The bottom surfaces of the two arc-shaped blocks 3 are jointly fixedly connected with a connecting seat 4. The inner ring of the connecting seat 4 is connected with a threaded connecting ring 5. The bottom end of the threaded connecting ring 5 is fixedly connected with an annular rubber shock pad 6. The inner bottom wall of the cabin shell 1 is fixedly installed with two groups of spring shock absorbers 9. The top ends of the two groups of spring shock absorbers 9 are jointly fixedly installed with a shock pad 7. Through the arrangement of the two groups of spring shock absorbers 9 and two groups of pneumatic shock absorbers 8, the shock pad 7 can be jointly supported. Compared with the traditional single rubber pad shock-absorbing equipment, this combined shock-absorbing structure can reduce the influence of the vibration of the equipment above the shock pad 7 on the shock pad 7, thereby improving the stability of the operation of the equipment inside the cabin shell 1.

[0023] The inner wall of the cabin shell 1 is fixedly installed with two limiting seats 17, the outer surface of the damping table 7 is fixedly connected with two damping support plates 18, the inner walls of the two limiting seats 17 are both fixedly connected with two rubber buffer pads 19, the two damping support plates 18 are respectively located between the two groups of rubber buffer pads 19, through the cooperation of the limiting seat 17 and the damping support plate 18, and simultaneously using the limiting groove 20 and the limiting block 21, the displacement of the damping table 7 can be controlled, the excessive shaking of the damping table 7 is limited, and the rubber buffer pad 19 plays a buffering role and can absorb part of the vibration energy. The inner top wall of the cabin shell 1 is fixedly installed with a sound-absorbing top plate 12, the inner wall of the cabin shell 1 is fixedly installed with two first sound-insulating side plates 15, the inner wall of the cabin shell 1 is fixedly installed with two second sound-insulating side plates 14, through the first sound-insulating side plate 15 and the second sound-insulating side plate 14, and simultaneously using the sound-absorbing top plate 12, the noise inside the cabin shell 1 can be blocked and absorbed from multiple directions, noise reflection is reduced, and the intensity of noise propagation outward can be more effectively reduced.

[0024] In the embodiment, the heat dissipation piece 2 includes a heat dissipation cover 201 fixedly embedded on one side of the cabin shell 1, the inner wall of the heat dissipation cover 201 is fixedly installed with a heat dissipation support plate 202, the inner circle of the heat dissipation support plate 202 is fixedly installed with a heat dissipation fan 203, and the inner circle of the heat dissipation cover 201 is threadedly connected with a protective mesh plate 204. The heat dissipation piece 2 is composed of the heat dissipation cover 201, the heat dissipation support plate 202, the heat dissipation fan 203 and the protective mesh plate 204. The airflow generated by the operation of the heat dissipation fan 203 takes away the heat in the cabin shell 1 at the same time, disrupts the propagation path of noise, reduces noise aggregation, and the protective mesh plate 204 plays a role in blocking external debris. Two air inlet holes 28 are formed in the outer surface of the cabin shell 1, the inner walls of the two air inlet holes 28 are both fixedly connected with air inlet mesh plates 13. Through the setting of the air inlet holes 28, external air can circulate and dissipate heat. The inner wall of the cabin shell 1 is fixedly connected with a partition plate 10 located on the right side of the damping table 7. The outer surface of the partition plate 10 is provided with annularly arranged ventilation holes 16. One side of the partition plate 10 is fixedly installed with a circular sound-absorbing plate 11 located on one side of the heat dissipation piece 2. Through the setting of the partition plate 10 and the ventilation holes 16, the gas during ventilation can circulate, improving the heat dissipation and ventilation effect inside the cabin shell 1. The use of the circular sound-absorbing plate 11 can reduce the wind noise during heat dissipation.

[0025] In the embodiment, the inner walls of the two limiting seats 17 are each provided with two limiting grooves 20, the sides of the two shock-absorbing supporting plates 18 away from each other are each fixedly connected with a limiting block 21, the sides of the two limiting blocks 21 away from each other are respectively in sliding connection with the inner walls of the two limiting grooves 20, the upper surface of the shock-absorbing platform 7 is fixedly connected with two mounting plates 23, the upper surfaces of the two mounting plates 23 are each provided with a plurality of threaded mounting grooves 24, one end of the nacelle shell 1 is fixedly provided with an end plate 25, the side of the end plate 25 is provided with a connecting hole 26, through the limiting grooves 20 and the limiting blocks 21, the shock-absorbing supporting plates 18 are limited, the stable shock-absorbing work is ensured, through the mounting plates 23 and the threaded mounting grooves 24, the generator and the gear box and other equipment can be conveniently installed and fixed.

[0026] In the embodiment, the side of the connecting seat 4 and the side of the annular rubber shock-absorbing pad 6 are each provided with a plurality of fixing holes 27, and the plurality of fixing holes 27 are arranged in a ring shape, the upper surface of the annular rubber shock-absorbing pad 6 is in contact with the bottom surface of the connecting seat 4, the inner wall of the nacelle shell 1 is fixedly connected with a plurality of arc-shaped sound-absorbing plates 22, each arc-shaped sound-absorbing plate 22 is located on one side of the heat dissipation piece 2, the bottom surface of the shock-absorbing platform 7 is provided with two groups of air pressure shock absorbers 8, the bottom ends of the two groups of air pressure shock absorbers 8 are fixedly installed with the inner bottom wall of the nacelle shell 1, through the plurality of fixing holes 27, the tower drum can be connected and installed, and through the two groups of air pressure shock absorbers 8, part of the vibration energy can be absorbed, the noise generated by the vibration can be reduced, and the noise reduction effect is improved.

[0027] The working principle and use process of the present application are as follows: first, the connecting seat 4 and the annular rubber shock-absorbing pad 6 are connected and installed with the tower drum, when the wind turbine operates and generates vibration, the annular rubber shock-absorbing pad 6 plays a buffering role, reduces the direct impact on the tower drum, then the two groups of spring shock absorbers 9 and the two groups of air pressure shock absorbers 8 inside the nacelle shell 1 can jointly support the shock-absorbing platform 7, can reduce the influence of the vibration of the equipment above the shock-absorbing platform 7 on the shock-absorbing platform 7, and improve the equipment operation stability of the nacelle shell 1, when the shock-absorbing platform 7 is displaced due to vibration, the rubber buffer pad 19 can play a buffering role, limit the excessive shaking of the shock-absorbing platform 7, and absorb part of the vibration energy; Then the sound-absorbing roof 12, the first sound-insulating side plate 15 and the two second sound-insulating side plates 14 inside the nacelle shell 1 can absorb the noise propagated inside the nacelle shell 1, reduce noise reflection, and can block the noise inside the nacelle shell 1 in multiple directions, reduce the strength of the noise outward propagation, and the plurality of arc-shaped sound-absorbing plates 22 and the circular sound-absorbing plate 11 can absorb and reduce the wind noise formed by the heat dissipation inside the nacelle shell 1, so as to reduce the wind noise during heat dissipation.

[0028] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0029] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0030] In this application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0031] In this application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0032] Although the embodiments of the application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as a limitation of the application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the application.

Claims

1. A wind turbine nacelle with vibration and noise reduction, characterized in that: include: nacelle shell; A connecting assembly, used for connecting the nacelle shell and the tower; a vibration damping platform, provided in the nacelle shell, for mounting a generator gearbox; A shock absorbing assembly is provided in the cabin shell and is used to connect the cabin shell and the shock absorbing platform.

2. The vibration-reducing and noise-reducing wind turbine nacelle according to claim 1, characterized in that: The connection component includes: an arc-shaped block, one end of which is connected to the outer wall of the nacelle shell; A connecting seat is provided below the arc-shaped block and connected to the other end of the arc-shaped block, wherein the inner ring of the connecting seat is connected to a threaded connecting ring; An annular rubber shock-absorbing pad is arranged below the connecting seat and is respectively connected to the bottom end of the connecting seat and the bottom end of the threaded connecting ring.

3. The vibration-reducing and noise-reducing wind turbine nacelle according to claim 2, characterized in that: The shock absorbing assembly comprises: a spring isolator, disposed in the nacelle shell, with one end connected to the inner bottom wall of the nacelle shell and the other end connected to the shock absorbing platform; A pneumatic shock absorber is arranged in the cabin shell, one end of which is connected to the inner bottom wall of the cabin shell, and the other end of which is connected to the shock absorbing platform.

4. The vibration-reducing and noise-reducing wind turbine nacelle according to any one of claims 1 to 3, characterized in that: Shock-absorbing support plates are respectively provided on the opposite sides of the shock-absorbing platform, and a limiting block is formed on the shock-absorbing support plates. A limiting seat is respectively installed on the opposite inner walls of the cabin shell, and the limiting seat has a limiting groove facing the limiting block, and the inner wall of the limiting groove slides with the surface of the limiting block.

5. The vibration-reducing and noise-reducing wind turbine nacelle according to claim 4, characterized in that: The two opposite ends of the limiting groove are respectively provided with rubber buffer pads, and the limiting block is located between the two rubber buffer pads.

6. The vibration-reducing and noise-reducing wind turbine nacelle according to claim 4, characterized in that: The upper surface of the vibration-damping platform is fixedly connected with a mounting plate, and the upper surface of the mounting plate is provided with a plurality of threaded mounting grooves.

7. The wind turbine nacelle with vibration and noise reduction according to claim 4, characterized in that: A heat sink is provided on one side of the nacelle shell, and the heat sink includes: a heat dissipation cover, provided on one side of the nacelle shell; A heat dissipation support plate is installed in the heat dissipation cover; A heat dissipation fan is installed on the heat dissipation support plate; A protective screen is installed at the air outlet of the heat dissipation cover.

8. The vibration-reducing and noise-reducing wind turbine nacelle according to claim 7, characterized in that: A partition is provided between the heat sink and the vibration-damping platform. Ventilation holes arranged in a ring are provided on the partition. A circular sound-absorbing plate is fixedly mounted on the partition.

9. The vibration-reducing and noise-reducing wind turbine nacelle according to claim 7, characterized in that: The inner wall of the nacelle shell is provided with a plurality of arc-shaped sound-absorbing panels, and the arc-shaped sound-absorbing panels are all located on one side of the heat dissipation element.

10. The vibration-reducing and noise-reducing wind turbine nacelle according to claim 1, characterized in that: An end plate is fixedly mounted on one end of the nacelle shell, and a connecting hole is opened on one side of the end plate.

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