Power generation equipment with noise reduction function

Abstract

The utility model discloses power generation equipment with a noise reduction function, which comprises a generator shell, one end of the generator shell is connected with a wind power generation fan blade through a safety rack, a sealing cover is fixed on the central end face of the wind power generation fan blade through a bolt, and the inner circumference of the generator shell is fixedly connected with a sound absorption ring. Sound absorption holes distributed at equal intervals are formed in the inner circumference of the sound absorption ring, a buffer part is fixedly connected between every two rows of sound absorption holes, each sound absorption hole comprises a cavity, wave protrusions and grooves, the wave protrusions are arranged on the circumferential inner walls of the sound absorption holes at equal intervals, and the grooves are formed in the inner walls, close to the positions between every two wave protrusions, of the sound absorption holes at equal intervals. According to the utility model, the sound wave reflection and refraction area is enlarged, the friction and collision strength between sound waves and the inner walls of the sound absorption holes is increased, the energy loss of the sound waves is increased, the noise reduction quality is improved, and the cavities connected through the sound absorption cotton are arranged on one sides of the sound absorption holes, so that the sound waves resonate in the cavities, and the energy loss of the sound waves is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of power generation equipment, in particular to a power generation equipment with a noise reduction function. Background Art

[0002] Wind power generation is a renewable energy generation method that converts wind energy into electrical energy. Wind power generation uses wind rotors (also called wind turbines or wind turbines) to rotate through wind energy, driving generators to generate electricity. The basic principle of wind power generation is to convert the kinetic energy of wind into mechanical energy, and then convert it into electrical energy through the generator. The main components of wind power generation include wind rotors, generators, control systems and transmission systems. Wind turbines are usually installed on high towers to obtain higher wind energy. The wind rotor receives the energy of the wind, drives the generator to generate electricity by rotating, and then transmits it to the power grid through the transmission system for power supply. Wind power generation is clean and renewable, does not produce greenhouse gases and other pollutants, and is environmentally friendly. With the advancement of technology and the reduction of costs, wind power generation has become one of the main sources of energy in many parts of the world.

[0003] After searching, the Chinese patent application number 2020101696701 discloses a noise reduction wind turbine, in which the radiator is arranged on the support rod of the wind turbine, and the support rod is provided with a radiator auxiliary heat dissipation device. The radiator auxiliary heat dissipation device includes an air blowing heat dissipation mechanism; the air blowing heat dissipation mechanism is located above the radiator in the vertical direction; the air blowing heat dissipation mechanism includes a blower, a noise reduction hood and a first conical hair dryer, and the wide end of the first conical hair dryer is arranged toward the radiator; the air outlet end of the blower is connected to the narrow end of the first conical hair dryer; the inner side wall of the noise reduction hood is provided with a sound insulation cavity, and the noise reduction hood is provided with sound-absorbing cotton in the sound insulation cavity. A noise reduction wind turbine in the above patent has the following shortcomings:

[0004] Although the overall device reduces the noise of the blower, the noise caused by the fan blades driving the generator set during the power generation process is not effectively eliminated, and the noise problem of power generation still exists. Therefore, there is an urgent need for a power generation equipment with noise reduction function. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a power generation device with noise reduction function.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A power generation device with a noise reduction function comprises a generator shell, one end of the generator shell is connected to a wind power generation blade through a safety frame, and a sealing cover is fixed to the central end surface of the wind power generation blade by bolts, the inner circumference of the generator shell is fixedly connected to a sound absorbing ring, and the inner circumference of the sound absorbing ring is provided with sound absorbing holes distributed at equal distances, and a buffer is fixedly connected between every two rows of sound absorbing holes.

[0008] As a further solution of the utility model: the sound absorbing hole includes a cavity, a wave protrusion and a groove, and the wave protrusion is arranged at equal distances on the circumferential inner wall of the sound absorbing hole.

[0009] As a further solution of the utility model: the grooves are opened at equal distances in the inner wall of the sound absorbing hole between every two wave protrusions.

[0010] As a further solution of the utility model: the cavity is arranged in the inner wall of the sound absorbing ring close to the outer circumference of each sound absorbing hole, and each cavity is connected by sound absorbing cotton.

[0011] As a further solution of the utility model: the buffer member includes a flexible frame, an elastic net and a support frame, and the support frame is welded to the circumferential inner wall of the sound absorbing ring between every two groups of sound absorbing holes.

[0012] As a further solution of the utility model: the flexible frame is welded to the top and both sides of the support frame, and the elastic net is arranged on the outer surface of the flexible frame.

[0013] As a further solution of the utility model: a soundproof cover is fixed to the back side of the generator housing by bolts.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] When the generator set in the generator shell is working, the generated sound waves enter each sound-absorbing hole. At this time, the sound waves are reflected and refracted multiple times, and the sound-absorbing holes are provided with wave protrusions and grooves, which effectively expand the sound wave reflection and refraction area, increase the friction and collision intensity between the sound waves and the inner wall of the sound-absorbing holes, greatly increase the sound wave energy loss, and effectively improve the quality of noise reduction. At the same time, a cavity connected by sound-absorbing cotton is provided on one side of the sound-absorbing hole, so that the sound waves resonate in the cavity, increase the energy loss of the sound waves, and improve the sound absorption effect.

[0016] When the generator set is working, the buffer is close to the generator set, and the vibration generated by the generator set is transmitted through the flexible frame and weakened by the elastic net, which effectively plays a role in shock absorbing the generator set. In the meantime, when the sound waves are transmitted from the sound-absorbing holes, the elastic nets around the buffer will be weakened again when they collide with them, which greatly improves the noise reduction efficiency and quality of the overall structure.

[0017] The top of the flexible frame of the utility model adopts an equidistant diamond structure, which effectively promotes the fitting and supporting effect between the flexible frame and the generator set.

[0018] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. The utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of a power generation device with noise reduction function proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the back structure of a power generation device with noise reduction function proposed by the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of a generator housing in a power generation device with noise reduction function proposed by the utility model;

[0022] Figure 4 This is a structural schematic diagram of a buffer component in a power generation device with a noise reduction function proposed by the utility model;

[0023] Figure 5 This is a schematic diagram of the partial cross-sectional structure of a sound-absorbing hole in a power generation device with noise reduction function proposed by the utility model.

[0024] In the figure: 1. generator shell; 2. wind turbine blades; 3. safety frame; 4. sealing cover; 5. sound insulation cover; 6. sound absorbing ring; 7. sound absorbing hole; 701. cavity; 702. wave protrusion; 703. groove; 8. buffer; 801. flexible frame; 802. elastic net; 803. support frame. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0027] A power generation device with noise reduction function, such as Figure 1 , Figure 2 , Figure 3, Figure 4 and Figure 5 As shown, it includes a generator shell 1, one end of the generator shell 1 is connected to a wind turbine blade 2 through a safety frame 3, and a sealing cover 4 is fixed to the central end surface of the wind turbine blade 2 by bolts, the inner circumference of the generator shell 1 is fixedly connected to a sound absorbing ring 6, and the inner circumference of the sound absorbing ring 6 is provided with sound absorbing holes 7 distributed at equal distances, and a buffer 8 is fixedly connected between every two rows of sound absorbing holes 7, and a sound insulation cover 5 is fixed to the back of the generator shell 1 by bolts;

[0028] Here, the structure and principle of the wind turbine generator set are technologies known to those skilled in the art and will not be elaborated in this case.

[0029] In order to solve the noise generated by the generator set during wind power generation, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the sound-absorbing hole 7 includes a cavity 701, a wave protrusion 702 and a groove 703, and the wave protrusion 702 is equidistantly arranged on the inner wall of the circumference of the sound-absorbing hole 7, and the groove 703 is equidistantly opened in the inner wall of the sound-absorbing hole 7 close to every two wave protrusions 702, and the cavity 701 is arranged in the inner wall of the sound-absorbing ring 6 close to the outer circumference of each sound-absorbing hole 7, and each cavity 701 is connected by sound-absorbing cotton;

[0030] When the generator set in the generator shell 1 is working, the generated sound waves enter each sound-absorbing hole 7. At this time, the sound waves are reflected and refracted multiple times, and the sound-absorbing hole 7 is provided with wave protrusions 702 and grooves 703, which effectively expand the sound wave reflection and refraction area, so that the friction and collision intensity between the sound wave and the inner wall of the sound-absorbing hole 7 is increased, which greatly increases the sound wave energy loss and effectively improves the quality of noise reduction. At the same time, a cavity 701 connected by sound-absorbing cotton is provided on one side of the sound-absorbing hole 7, so that the sound wave resonates in the cavity, increases the energy loss of the sound wave, and improves the sound absorption effect.

[0031] In order to make the generator set work, the generator set should be effectively damped, such as Figure 3 and Figure 4 As shown, the buffer member 8 includes a flexible frame 801, an elastic net 802 and a support frame 803, and the support frame 803 is welded to the inner wall of the circumference of the sound absorbing ring 6 between each two groups of sound absorbing holes 7, the flexible frame 801 is welded to the top and both sides of the support frame 803, and the elastic net 802 is arranged on the outer surface of the flexible frame 801;

[0032] The top of the flexible frame 801 adopts an equidistant diamond structure, which effectively promotes the fitting and supporting effect between the flexible frame 801 and the generator set;

[0033] When the generator set is working, the buffer 8 is close to the generator set, and the vibration generated by the generator set is transmitted through the flexible frame 801 and weakened by the elastic net 802, which effectively plays a role in shock absorbing the generator set. In the meantime, when the sound waves are transmitted from the sound-absorbing holes 7, the elastic net 802 colliding with the buffer 8 will be weakened again, which greatly improves the noise reduction efficiency and quality of the overall structure.

[0034] Working principle: when the generator set in the generator shell 1 is working, the generated sound waves enter each sound-absorbing hole 7. At this time, the sound waves are reflected and refracted multiple times, and the sound-absorbing hole 7 is provided with wave protrusions 702 and grooves 703, which effectively expand the sound wave reflection and refraction area, so that the friction and collision intensity between the sound wave and the inner wall of the sound-absorbing hole 7 is increased, and the sound wave energy loss is greatly increased; when the generator set is working, the buffer 8 is close to the generator set, and the vibration generated by the generator set is transmitted through the flexible frame 801, and the vibration is weakened by the elastic net 802. In the meantime, when the sound wave is transmitted from the sound-absorbing hole 7, the elastic net 802 that collides with the buffer 8 will be weakened again.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A power generation device with noise reduction function, comprising a generator housing (1), characterized in that: One end of the generator housing (1) is connected to a wind turbine blade (2) via a safety frame (3), and a sealing cover (4) is fixed to a central end surface of the wind turbine blade (2) via bolts; a sound absorbing ring (6) is fixedly connected to the inner circumference of the generator housing (1), and the inner circumference of the sound absorbing ring (6) is provided with sound absorbing holes (7) distributed at equal distances, and a buffer (8) is fixedly connected between every two rows of sound absorbing holes (7).

2. The power generation equipment with noise reduction function according to claim 1, characterized in that: The sound absorbing hole (7) comprises a cavity (701), a wave protrusion (702) and a groove (703), and the wave protrusion (702) is arranged at equal distances on the circumferential inner wall of the sound absorbing hole (7).

3. The power generation equipment with noise reduction function according to claim 2, characterized in that: The grooves (703) are opened at equal distances in the inner wall of the sound absorbing hole (7) close to each two wave protrusions (702).

4. The power generation equipment with noise reduction function according to claim 2, characterized in that: The cavities (701) are arranged in the inner wall of the sound absorbing ring (6) close to the outer circumference of each sound absorbing hole (7), and each cavity (701) is connected by sound absorbing cotton.

5. The power generation equipment with noise reduction function according to claim 1, characterized in that: The buffer member (8) comprises a flexible frame (801), an elastic net (802) and a support frame (803), and the support frame (803) is welded to the inner wall of the circumference of the sound absorbing ring (6) between each two groups of sound absorbing holes (7).

6. The power generation equipment with noise reduction function according to claim 5, characterized in that: The flexible frame (801) is welded to the top and both sides of the support frame (803), and the elastic net (802) is arranged on the outer surface of the flexible frame (801).

7. The power generation equipment with noise reduction function according to claim 1, characterized in that: A soundproof cover (5) is fixed to the back side of the generator housing (1) by means of bolts.

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