Noise analysis of Perkins diesel generator Set

In order to control the noise effectively, firstly, the generation and distribution of the unit noise are analyzed, so as to adopt the noise control technology. According to the working principle of gas turbine generator set, the noise generation is very complicated.

According to the causes and locations, the noise of the gas turbine generator set can include the following parts:

(1) smoke exhaust noise;

(2) mechanical noise;

(3) combustion noise;

(4) Cooling fan and exhaust noise;

(5) intake noise;

(6) generator noise.

According to its propagation path, it can be summarized into the following types of noise

a. Smoke exhaust noise of internal combustion engine. Smoke exhaust noise is a kind of high-temperature and high-speed pulsating air flow noise. It is the part with the largest energy and the most components in the unit noise. It is much higher than the intake noise and the mechanical noise radiated by the body, and it is the most important part in the total noise of the unit, and also the focus of noise control. Its fundamental frequency is the ignition frequency of the internal combustion engine.

b. Intake noise. That is, the intake noise of the box, the intake noise mainly includes the mechanical noise of the unit, the generator noise and the airflow noise. Since the intake is passive and the location is far from the main noise source, the noise level is relatively low compared with other locations, and the required noise reduction is small.

c. Exhaust noise. The exhaust noise is mainly composed of exhaust noise, air flow noise, fan noise, mechanical noise and combustion noise of internal combustion engine. There are many noise sources and high noise level here. Moreover, the unit adopts strong exhaust air to cool down, which increases the outward propagation of noise, so the noise control here is relatively difficult.

Jiangsu Meao Power Technology Co., Ltd. is an important manufacturer of diesel generators. The company mainly manufactures and sells diesel generator sets with power of 3-3000kW, mobile power station of 24-600kW, Marine emergency diesel generator set of 24-800kW, gas generator set, heavy oil generator set and all kinds of imported series, special series (trailer, static speaker, mobile lighthouse, container, etc.) diesel generator At the same time, we are engaged in generator set maintenance and after-sale service of generator set accessories.