三联供项目落噪计划(国外英文资料).docVIP

三联供项目降噪方案 The acoustic ceiling panel using the 0.8 mm thick perforated aluminum plate, perforated rate acuity (22), select 32 kg/m3 centrifugal composite sound-absorbing cotton as absorption layer, and on the surface absorption cotton wrapped with glass fiber cloth. Sound absorption can reach 8-10db (A). Sound isolation of sound Windows In the corresponding position of the machine room, set up the soundproof window, this scheme adopts the second layer soundproof window. The acoustic observation window USES 5 + 5 safety clip glass + 8 thick white glass. To prevent sound insulation window form anastomosis effect and sound insulation trough, set aside a certain cavity between glass and glass, improve low frequency sound insulation performance, from the safety into consideration at the same time, in the face of the engine side, membrane glass glass design using Ann. Observation of sound insulation window using steel frame, sound insulation materials, sealing materials, white glass, safety glass clamp and decor, has high sound insulation quantity, glass and bright, clear line of sight, safe use, etc. The acoustic isolation index is greater than 35dB (A). Sound isolation from the sound door Set up the soundproof door on the corresponding position in the machine room. The diaphragm door is made of steel panel and sound insulation material and sealing material, the hinge adopts refrigerator hinge, and the door door is locked. To prevent the spread of the low-frequency noise outside the soundproof door plate inside coating damping, sound insulation layer of this kind of material can effectively prevent low frequency resonance, the use of the soundproof door to reach the best state. Sound isolation is greater than 35 dB (A). The acoustic treatment of gas generator sets Design points for sound insulation cover When designing the sound insulation, it should be noted as far as possible: (1) the light quality composite structure with good quality and sound insulation performance