TECHNOLOGY PRINCIPLE

The vibration and noise problems of electromechanical equipment are very common. Different influencing factors such as the vibration frequency of each equipment, the layout of the piping system, and the material and structure of the wall should be comprehensively analyzed to find the dominant sound source. The thickness and density of the material to improve its airborne sound insulation effect. However, some applications have strict limits on wall thickness, load and cost. Therefore, proper design and installation are required to ensure a balance between reducing wall thickness, weight and acoustics.

The noise control of electromechanical equipment is closely related to the indoor allowable limits, including the sound pressure level LAe q and the noise evaluation value NC;

The noise control of electromechanical equipment is related to the sound power of the equipment and the relative position of the equipment to the sensitive point;

Calculate the indicators required for noise reduction measures, such as sound insulation, through the relationship between the sound source and the indoor allowable limit of sensitive points;

Sound insulation treatment: the main means of noise reduction for mechanical and electrical equipment, including sound insulation covers, pipes, walls, ceilings, floors, doors and windows;

Sound-absorbing treatment: Arrange sound-absorbing materials or sound-absorbing structures at the interface of rooms and components to reduce indoor reverberation sound, and the noise reduction can reach 6-10dB;

Muffler treatment: a necessary measure for equipment that needs ventilation such as air ducts and cooling towers. The muffler can make the airflow pass and reduce the noise.

·Vibration isolation treatment: It is a necessary measure to transmit the sound of the solid structure generated by the vibration of the water pump, air duct, and electromechanical equipment during the operation, and reduce the necessary measures for the air duct, cooling tower and other equipment that need ventilation. The muffler can make the airflow pass and reduce the noise.