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Water curtain/foamed aluminum composite noise reduction method and noise reduction device

A foamed aluminum and foamed aluminum plate technology, applied in the field of noise reduction, can solve the problems of unstable noise reduction, and achieve the effects of easy processing and disassembly, stable noise reduction effect, and high weather resistance.

Pending Publication Date: 2021-06-29
清研特材科技(洛阳)有限公司
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Problems solved by technology

[0005] In order to achieve the noise reduction of wind turbines above the water surface in offshore wind farms, improve the noise reduction effect, and solve the problem of unstable noise reduction caused by the influence of airflow and water flow on the bubble curtain, the invention proposes a water curtain / foam aluminum composite noise reduction Noise method and noise reduction device

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  • Water curtain/foamed aluminum composite noise reduction method and noise reduction device
  • Water curtain/foamed aluminum composite noise reduction method and noise reduction device
  • Water curtain/foamed aluminum composite noise reduction method and noise reduction device

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Embodiment Construction

[0028] The technical scheme of the present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0029] The present invention proposes a water curtain / foam aluminum composite noise reduction method, which makes water flow on the uneven surface of the foam aluminum plate standing on the sea to form a water curtain, and realizes the noise reduction of the foam aluminum porous material and the water curtain noise reduction compound. The following embodiments are specific devices for realizing the aforementioned methods.

[0030] see figure 1 and figure 2 , is an embodiment of a water curtain / foam aluminum composite noise reduction device of the present invention. This embodiment includes foamed aluminum boards and piping systems arranged on the foamed aluminum boards. The aperture of the foamed aluminum boards 2 is 0.1-5mm and the thickness is 5-50mm. Two transition pipes 52 extending in the up and down...

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Abstract

The invention discloses a water curtain / foamed aluminum composite noise reduction method. According to the method, water flows on the uneven surfaces of foamed aluminum plates vertically placed on the sea surface to form a water curtain, and the water curtain with a good noise reduction effect is compounded with a foamed aluminum porous material, so that the noise reduction effect can be further improved. The porous structure on the uneven surface of the foamed aluminum can promote the water flow to collide with the foamed aluminum to form more small bubbles, so that the sound absorption effect of the water curtain is further enhanced. The foamed aluminum plates support the water curtain flowing on the surface of the foamed aluminum plates, so that the noise reduction effect is stabilized, and the influence of airflow and water flow on the water curtain is weakened. The foamed aluminum plates are of a composite structure of aluminum and air holes, and the metal material of the foamed aluminum plates is resistant to seawater corrosion, high in specific strength and high in weather resistance. The water curtain utilizes water resources in seawater, so that a composite noise reduction device is suitable for being applied to offshore wind plants with long service life and low cost.

Description

technical field [0001] The invention belongs to the technical field of noise reduction, and in particular relates to a noise reduction method and a noise reduction device applied to a wind turbine above the water surface of an offshore wind farm. Background technique [0002] There are many noise sources in offshore wind farms, which seriously endanger the health of marine life and nearby workers. There are two main sources of noise: (1) The wind turbine drives the gears to rotate mechanically through the rotation of the turbine blades, thereby generating electricity. During the process of the gears meshing with each other, huge vibrations will be generated, resulting in huge noise; (2) ) a lot of noise generated during foundation construction of offshore wind turbines. The impact of noise generated by offshore wind farms on marine animals cannot be underestimated. This problem needs to be effectively alleviated by reducing the noise level. At present, there are mainly thr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/162G10K11/16
CPCG10K11/162G10K11/161
Inventor 杨倩倩邵星海刘源曹磊陈明
Owner 清研特材科技(洛阳)有限公司
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