How to reduce noise in generator room?
2022-04-22
Diesel generator sets used indoors are generally placed in special machine rooms. In order not to bring noise pollution to the surrounding environment, noise reduction treatment needs to be carried out in the machine room. According to Raines' summary, there are three common methods.
The noise reduction of the machine room needs to deal with the causes of noise respectively, mainly including the following methods:
1. Noise reduction of air inlet and exhaust: the air inlet and exhaust channels of the machine room are made into sound insulation walls respectively, and silencing sheets are set in the air inlet and exhaust channels. There is a certain distance in the channel for buffering, which can reduce the intensity of sound source radiation from the machine room to the outside.
2. Control of mechanical noise: the top and surrounding walls of the machine room are paved with sound absorption and insulation materials with high sound absorption coefficient, which are mainly used to eliminate indoor reverberation and reduce the sound energy density and reflection intensity in the machine room. In order to prevent the noise from radiating outward through the gate, set fire sound insulation iron door.
3. Control of smoke exhaust noise: the smoke exhaust system is equipped with a special secondary silencer on the basis of the original primary silencer, which can ensure the effective control of smoke exhaust noise of the unit. If the length of the smoke exhaust pipe exceeds 10m, the pipe diameter shall be increased to reduce the exhaust back pressure of the generator set. The above treatment can improve the noise and back pressure of the generator set. Through noise reduction treatment, the noise of the generator set in the machine room can meet the requirements of users outdoors.
In addition, we should also note that the abnormal sound of the generator set is sometimes a signal of failure. For example, the continuous metal knocking sound is that the piston crown strikes the cylinder head; The sound of "drink" or "hiss" may represent the air leakage of the piston ring. Some small noises occur frequently. We should start to pay attention to and analyze the source.
The noise reduction of the machine room needs to deal with the causes of noise respectively, mainly including the following methods:
1. Noise reduction of air inlet and exhaust: the air inlet and exhaust channels of the machine room are made into sound insulation walls respectively, and silencing sheets are set in the air inlet and exhaust channels. There is a certain distance in the channel for buffering, which can reduce the intensity of sound source radiation from the machine room to the outside.
2. Control of mechanical noise: the top and surrounding walls of the machine room are paved with sound absorption and insulation materials with high sound absorption coefficient, which are mainly used to eliminate indoor reverberation and reduce the sound energy density and reflection intensity in the machine room. In order to prevent the noise from radiating outward through the gate, set fire sound insulation iron door.
3. Control of smoke exhaust noise: the smoke exhaust system is equipped with a special secondary silencer on the basis of the original primary silencer, which can ensure the effective control of smoke exhaust noise of the unit. If the length of the smoke exhaust pipe exceeds 10m, the pipe diameter shall be increased to reduce the exhaust back pressure of the generator set. The above treatment can improve the noise and back pressure of the generator set. Through noise reduction treatment, the noise of the generator set in the machine room can meet the requirements of users outdoors.
In addition, we should also note that the abnormal sound of the generator set is sometimes a signal of failure. For example, the continuous metal knocking sound is that the piston crown strikes the cylinder head; The sound of "drink" or "hiss" may represent the air leakage of the piston ring. Some small noises occur frequently. We should start to pay attention to and analyze the source.
