Today we will talk about the generation of exhaust noise and fan noise of diesel generator sets. When it comes to noise, what kind of sound can be called noise? Most of the unpleasant sounds are loud and harsh. There are many noises in the diesel generator set, which often affect people's life and work and become a burden. How do these diesel generator set exhaust noise and fan noise come about? Let's focus on it today.
The main components of exhaust noise are as follows: high-pressure combustion noise of diesel in the combustion chamber, low-frequency pulsating noise caused by periodic exhaust, gas column resonance noise in the exhaust pipe, Helmholtz resonance resonance noise of cylinder, noise generated by high-speed air flow through valve clearance and zigzag pipe, vortex noise, and regeneration noise generated by the exhaust system under the excitation of pressure waves in the pipe. As the airflow speed increases, the noise frequency significantly increases. Combustion noise, cooling fan and exhaust noise, intake noise, and generator noise are the structural vibrations and noise generated during the combustion process of diesel.
The noise of the unit fan is composed of eddy current noise and rotational noise, and rotational noise is caused by periodic disturbances caused by the cutting air flow of the fan blades. Vortex noise is the vortex flow caused by the viscosity of the gas when the airflow separates on the rotating blade section. When the diesel generator set works normally, it needs enough air flow to create good heat dissipation conditions for the unit, otherwise the unit cannot guarantee its performance. Generator noise includes electromagnetic noise caused by magnetic field pulsation between the stator and rotor, as well as mechanical noise generated by rolling bearing rotation. The noise in the machine room ranges from 80db to 90db.
In the noise control project of diesel generator set, three aspects are usually considered: one is the price cost, and the second is the production process efficiency. Usually, manufacturers hope to achieve the best noise reduction effect with the least amount of money. The generator manufacturer Jiangsu Starlight Electricity Equipments Co.,Ltd. has preliminarily determined the plan of installing a sound absorption and insulation cover with a muffler based on the noise characteristics, and designed an accurate and complete plan. After high-precision processing and on-site installation according to strict requirements, the noise reduction task was finally completed.
Jiangsu Starlight Power Generation Equipment Co., Ltd. was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. The company has a registered capital of 218.88 million yuan. The company covers an area of 86,000 square meters and a building area of 55,000 square meters. There are more than 660 employees, including 456 professional technicians and 106 senior technicians. It has 46 sales and service outlets nationwide. The main products are diesel engines, generator sets, and diesel generators, providing users with a one-stop service of design, supply, debugging and maintenance at any time. Starlight has always insisted on using first-class talents, building first-class enterprises, manufacturing first-class products, creating first-class services, and making every effort to build a first-class domestic enterprise. If any question please feel free to visit our website https://www.dieselgeneratortech.com/ or send email to email@example.com.