Engineering Introduction:    

When the diesel generating set is running, the noise of 95-110db (a) is usually produced. If no necessary noise reduction measures are taken, the noise of the unit will have a serious impact on the surrounding environment. In order to protect and improve the environmental quality, we must control the noise. Through the use of high efficient sound absorbing materials and the noise reduction and noise reduction device produced by advanced production technology, the noise reduction treatment of the inlet and outlet, the wall and exhaust system of the body, and the vibration of the body itself is carried out to ensure that the unit is fully satisfied with the state under the premise of meeting the ventilation conditions, that is, the output power is not reduced. Standards for environmental noise requirements.  

Solution:

A, the vibration isolation treatment of diesel generator, the vibration isolation of the unit generally adopts high effective damping pad, after vibration isolation treatment, the vibration of the surface of the unit is effectively separated.            

B is to reduce noise in noise propagation channels, reduce the external radiation of sound sources, and control sound insulation and sound absorption of inner walls and smallpox of computer rooms. The noise source can be effectively decaying before the outgoing room to improve the noise reduction effect of the computer room.            

1, noise treatment of cooling fan and exhaust air passage            

2.Fan noise consists of rotary noise and eddy noise.            

3.the main is to design a good exhaust sound absorption channel, the sound absorption channel can be composed of air guide tube and exhaust noise reduction box, also can be composed of sound absorption board, the length and width of the exhaust channel, and other parameters to improve the sound absorption effect.            

C 、and diesel generator noise reduction construction scheme            

According to the situation at the scene, in view of its main noise source present situation, uses the effective sound insulation, the sound absorption, the vibration reduction, the dust removal and so on comprehensive construction plan.    

One, the noise elimination and sound absorption processing of the exhaust air passage:            

1, set up a level and two stage exhaust noise elimination device inside the exhaust duct.           

2, the arc shaped sound absorption guide plate is arranged at the lower end of the exhaust duct.    

Two. The noise reduction and sound absorption guide plate of the inlet passage.            

1, set up a level and two stage exhaust noise elimination device inside the exhaust duct.      

2, the arc shaped sound absorption guide plate is arranged at the lower end of the exhaust duct.

Three, noise reduction measures in the machine room:            

1, in the generator room of the engine room, the sound absorption ceiling will be added, which can reduce the noise in the computer room and improve the sound insulation effect.      

2, adding additional sound absorbing wall to the generator room inside the computer room can reduce the noise in the computer room and improve the sound insulation effect.