The gas generator is composed of a gas engine, a generator, a control cabinet, etc. the gas engine and the generator are installed on the same steel chassis. Set to Iguchi Banoike, natural gas, coal mine gas, water gas, refinery tail gas, methane gas, coke oven gas, blast furnace gas and other combustible gas as fuel, start quickly, the economy is good, especially because the demand for high quality of life in the city, the gas turbine has been widely used in telecommunications, post office, bank, library, hospital Hotel and other departments.
The noise generated by the operation of the unit brings serious noise pollution to the urban environment, affects the normal work and life of the people, and limits the wide application of the gas generator set. In order to solve the problem of noise pollution of gas generator set, the paper puts forward a set of measures to reduce the noise of the unit, and promote the popularization and application of gas generator set.
1, sound source analysis
Gas engine noise is the main noise source of gas generator set, and the noise of gas engine can be divided into aerodynamic noise, combustion noise, mechanical noise, exhaust noise and vibration noise. The aerodynamic noise mainly includes the air vibration noise caused by the intake, exhaust and fan rotation. The cylinder head vibration by pressure cylinder formed by the body noise radiated noise of the cylinder piston is burning; impact, the impact of vibration noise motion of gas distribution mechanism, jet system and other components are called mechanical noise.
2, transformation design
Based on the working principle of the gas generator set, it is difficult to use the method to reduce the noise of the noise source, so it is necessary to effectively block the way of noise transmission. The core of the technology is to reduce the noise pollution surface by using the law of natural attenuation of the sound wave. There are several methods to reduce noise, such as sound absorption, sound insulation and noise propagation.
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