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现有的大多数变电站降噪材料,因降噪特性与变电站噪声频谱特征不匹配,以及耐候、耐久性不达标,很难长久限制噪声排放水平。由国网公司研发的新型吸声材料——微孔纤维复合吸声板克服了以上缺陷,该吸声板由铝纤维板和微穿孔板复合而成,具备“低频高效、宽频有效”的吸声特性,而且绿色环保、耐候耐久。微孔纤维复合吸声板加工而成的吸声壁面、消声器、声屏障和隔声罩已在多座变电站降噪工程中投入使用,将站界噪声控制在GB 12348—2008《工业企业厂界环境噪声排放标准》的限值要求之下,在城区变电站降噪领域中显示出广阔的应用前景。
Most existing substation noise-reducing materials have a long way to limit the level of noise emission because of the mismatch between the noise reduction characteristics and the substation noise spectrum characteristics and the non-compliance of weatherability and durability. The new sound-absorbing material researched and developed by State Grid Corporation - Microfiber Composite Sound Absorption Board overcomes the above defects. The sound absorption board is made of aluminum fiber board and micro-perforated board and has the characters of “low frequency, high efficiency and wide frequency effective” Sound absorption characteristics, but also green, durable weathering. Microporous fiber composite sound-absorbing panels processed sound-absorbing wall, muffler, sound barrier and noise enclosures have been put into use in a number of substation noise reduction project, the station noise control in the GB 12348-2008 “Industrial Enterprise Factory Environmental noise emission standards, ”the limit requirements, in the area of substation noise reduction shows a broad application prospects.