新型复合保温隔声管道包扎结构研究

Development of a Novel Composite Pipe Bandaging Structure for Heat Preservation and Sound Insulation

目前,常用的管道隔声手段通常采用管道外壁包扎隔声材料的方法。此类管道隔声包扎结构高频隔声效果较明显,但在低频,当波长大于材料厚度10倍以上时,管道与包扎材料层易产生共振而使隔声性能显著下降。提出了一种在不改变原始包扎厚度与保温性能的基础上能够显著提高低频隔声性能的双层分立式复合保温隔声包扎结构,有效解决了现有保温隔声管道包扎结构低频隔声性能差的问题。

Currently, wrapped insulation materials are generally used for pipeline insulation. This kind of pipe insulation enswathement structure is very effective in insulating high-frequency sound. However, in the case of low frequency sound, especially when the wavelength is over ten times greater than the thickness of the materials, resonance is likely to occur between the pipeline and the wrapping material layer, which will cause drastic deterioration of the sound insulation performance. This paper presents a double division type of composite insulation enswathement structure. It can improve the low frequency sound insulation performance significantly without changing the original wrapping thickness and insulation performance, which effectively solves the problem of pipe insulation enswathement with poor low-frequency sound insulation performance.