Today, we'll discuss the generation of exhaust noise and fan noise in
diesel generator sets. Speaking of noise, what kind of sound can be considered noise? Unpleasant sounds are mostly characterized by clatter and harshness. Diesel generator sets are noisy, often disrupting people's lives and work, becoming a burden. How are exhaust noise and fan noise generated in these diesel generator sets? Today, we'll focus on this issue.
The main components of exhaust noise include: combustion noise in the diesel high-pressure combustion chamber, low-frequency pulsating noise caused by periodic exhaust, noise generated by air column resonance within the exhaust duct, noise generated by high-speed airflow through valve clearances and curved ducts driven by pressure waves within the duct, vortex noise, and regenerative noise caused by the exhaust system. The frequency of noise increases significantly with increasing airflow velocity. Diesel combustion generates structural vibration and noise, including combustion noise, cooling fan and exhaust noise, intake noise, and generator noise.
Fan noise in generator sets is primarily composed of vortex noise and rotational noise. Rotational noise is caused by the periodic turbulence of fan blades as they slice through the air, while eddy current noise is generated by vortexes due to gas viscosity, which form when the airflow separates from the rotating blades. Generator noise primarily consists of electromagnetic noise generated by magnetic field fluctuations between the stator and rotor, and mechanical noise caused by the rotation of rolling bearings. The noise level in the machine room ranges from 80dB to 90dB. Generator noise includes electromagnetic noise caused by magnetic field pulsations between the stator and rotor, and mechanical noise caused by the rotation of rolling bearings. The noise level in the machine room ranges from 80dB to 90dB.
Diesel generator noise control projects typically consider three factors: price and production process efficiency. Manufacturers typically aim to achieve optimal noise reduction at the lowest possible cost. A preliminary muffler installation plan can be determined based on noise characteristics, leading to a precise and comprehensive solution. High-precision machining and rigorous on-site installation ensure the ultimate noise reduction goal.
更多资讯关注：
http://www.360fadianjizu.com/