Silent diesel generator set basic design

The silent generator set is based on the basic diesel generator set, and the generator has soundproof and rainfall on the basis of the basic diesel generator set. With the price of the basic diesel generator set, this does not affect the existence and sales of mute diesel generator sets. Because the mute diesel generator sets have more advantages over the basic diesel generator set. So what is the different design scheme of mute diesel generator in production technology and basic diesel generator group? This has a diesel generator set manufacturer to explain it.
Silent diesel generator set basic design has the following:
A. Vixing design plan
Unit noise source: exhaust noise, mechanical noise, combustion noise cooling fan, exhaust passage noise, intake noise, etc. Take shock absorption and sound absorption measures, limits vibration and noise transmission to achieve low noise work.
B. Control of exhaust noise
The exhaust noise is the large portion of the energy zui in engine noise. It is the main part of the engine aerodynamic noise to suppress exhaust noise. Correctly select muzzle exhaust noise weakens 20-30 dB (a) or more; in the exhaust system The shock absorbing section is effectively isolated; the exhaust vibration is transmitted; the exhaust pipe in the mute casing is effectively separated, and the operating environment of the unit is improved, and the noise caused by the exhaust pipe.
C. Noise to noise on mechanical noise and combustion noise
Mechanical noise is mainly caused by vibration or mutual impact caused by the cycle changes of gas pressure and motion inertia during operation during operation; combustion noise refers to the combustion noise in the air; The unit performs seismic processing; the closed mute casing (all-window sealing processing), the neutral noise propagates the housing outer mute casing, absorbers most of the noise.
D. Reduce the noise of cooling fan and exhaust passage
The fan noise is composed of rotating noise and vortex noise, the exhaust passage is directly connected to the outside, the air flow rate is large, airflow noise, fan noise and mechanical noise radiates the cooling fan and the control design of the cooling fan and exhaust channel noise. Silky sound absorbing channel: consisting of air-winding grooves and exhaust noise reduction boxes or air-blown slots and one to several sets of sound absorbing baffles; exhaust sound absorbing channels: The effective area of ​​the exhaust port must meet the need for heat dissipation of the unit to avoid exhaust Increased mouthpiece and the wind noise increases and the unit high water temperature shutdown.
E. intake noise sound absorption
The inlet ventilation channel and the exhaust passage are directly connected to the outside. The flow rate of air is very large, the noise of the airflow and the noise of the unit operation are radiated outside; the airflow control air filter itself has a certain sense of sound, Inlet passages need to be soundhed: combined with air shutters + air blowing + muffle baffles or combinations of blind blinds + noise reduction boxes.