基于多层六边形MAM的变压器降噪方法设计

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摘要城市变压器的噪声治理是输变电工程中亟需解决的问题。本文对某110kV变压器的噪声频谱进行分析，得到变压器噪声主频的分布特性。利用不同类型薄膜声学超材料隔声能力的互补性，设计了一种基于多层六边形薄膜型声学超材料的复合隔声结构。该隔声结构具有体积小、隔声性能强的特点。采用有限元法对六边形薄膜声学超材料建立仿真模型，研究分析薄膜厚度与预应力对其隔声性能的影响，结合分析结果对该材料进行优化。在此基础上，建立复合隔声结构的有限元仿真模型。仿真结果表明，该种复合隔声结构在变压器噪声的主频点均具有较高的声传递损失，最低可达20.4dB左右，能很好地阻断变压器噪声传播。

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	谢泽龙1
	杨廷方1
	刘寒遥2
	周慧康1
	王润璞1
	单淞译1
	周强辉1

关键词 ：变压器, 薄膜型声学超材料, 复合隔声结构, 噪声

Abstract：Noise control of urban transformer is an urgent problem to be solved in power transmission and transformation projects. This paper analyzes the noise spectrum of a 110kV transformer, and obtains the distribution characteristics of the main frequency of transformer noise. A composite sound insulation structure based on multilayer hexagonal membrane-type acoustic metamaterial is designed by taking advantage of the complementarity of sound insulation ability of different types of membrane-type acoustic metamaterials. The sound insulation structure has the characteristics of small volume, strong sound insulation performance and good impact resistance. The finite element method is used to establish the simulation model of the hexagonal membrane-type acoustic metamaterial, and the influence of the thickness and prestress of the film on its sound insulation performance is studied and analyzed. The material is optimized based on the analysis results. On this basis, the finite element simulation model of composite sound insulation structure is established. The simulation results show that the composite sound insulation structure has high sound transmission loss at the main frequency of transformer noise, and the lowest is about 20.4dB, which can block the transmission of transformer noise.

Key words： transformers membrane-type acoustic metamaterial composite sound insulation material noise

收稿日期: 2022-08-25 出版日期: 2024-01-28

引用本文:

谢泽龙1，杨廷方1，刘寒遥2，周慧康1，王润璞1，单淞译1，周强辉1. 基于多层六边形MAM的变压器降噪方法设计[J]. 振动与冲击, 2024, 43(2): 201-207.
XIE Zelong1,YANG Tingfang1,LIU Hanyao2,ZHOU Huikang1,WANG Runpu1,SHAN Songyi1,ZHOU Qianghui1. Transformer noise reduction method based on multilayer hexagond membrane-type acoustic metamaterial . JOURNAL OF VIBRATION AND SHOCK, 2024, 43(2): 201-207.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2024/V43/I2/201

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