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Generator set noise reduction control


Noise control governance, the crew is to ensure generating set ventilated environment is the premise of reducing the output power and normal operation, with efficient sound-absorbing materials and noise silencer of inlet and exhaust passage and exhaust system, through the sound attenuation, sound insulation, sound absorption, noise reduction processing technical means such as vibration isolation, noise emissions meet the national environmental protection standard. Therefore, the noise control of industrial equipment such as fixed generator set is effectively realized.

Relevant laws and regulations

From the law of the People's Republic of China on the prevention and control of environmental noise pollution, urban regional environmental noise standards of the People's Republic of China: this standard specifies the city of 5 kinds of regional environmental noise peak, apply to the urban areas, rural life area can reference standards 


 ■ Urban environmental noise standard
 

Class  

Day Night  

Applicable area

 0  50db  40db  

Sanatorium, senior villa area, high hotel area and other special needs quiet area 

 1  55db  45db

The area that is dominated by residential and cultural institutions 

 2  60db  50db

Residential, commercial, industrial mixed areas 

 3  65db  55db  

Industrial zone

 4  70db  55db

The main road of the city and the inland waterway through the city 

The principle of noise 

The main noise sources of generator sets are shown in the figure:



 

 Major noise reduction measures 

○  Smoke noise measures: equipped with resistance industrial muffler and resistant residential muffler
○  Wind and exhaust noise reduction measures: add wind and exhaust channel to the corner, set up wind and exhaust noise reduction box;
○   Inside of the machine room: use a special brick wall and the laying of sound insulation board, and add the defense door
○   Increase the base quality of the unit or the isolation trench as a vibration isolation treatment. 


Noise reduction engineering drawing

 

Specific site implementation drawings can be contacted by the wall and the local branch offices, can be designed according to the actual situation on the site.