With the continuous development of the city, noise pollution has become one of the main environmental pollution factors at present. When the diesel generator set is running, it usually generates a noise of 90~128db(a). If the necessary noise reduction measures are not taken, the noise from the operation of the unit will cause serious damage to the surrounding environment. In order to protect and improve the quality of the environment, noise must be controlled. In view of the noise problem of diesel generator set operation, Recommends the following measures to make the noise emission reach the national standard (85db(a)).
1. Sound insulation measures
To ensure that the noise of diesel generators do not pass out from the channel mouth, so to set up fireproof sound insulation settings at the location of the channel. Filled with high-quality sound-absorbing rock wool, the border in the door seam at the mouth of the package felt, to play an effective sealing effect, so as to reduce and isolate the noise.
2. Wall acoustic measures
Can be based on the sound pressure level of noise generated by the operation of diesel generators, to determine whether the body around the body and the top surface to do acoustic treatment, in the diesel generator body around the body, the roof with sound-absorbing rock wool, such as the specified need can be used on the outside wall with perforated plate for acoustic body shield.
3. into the air, exhaust air muffling treatment
Diesel generator fan inlet and outlet noise is also quite large, not very good governance is also difficult to meet the relevant environmental requirements. In order to effectively reduce the inlet and outlet aerodynamic noise, so that it can meet the requirements of Class III standards, it is proposed to muffle the noise of the inlet and outlet, such as sound insulation cotton, muffling film, etc.
4. Secondary muffler
The exhaust gas pipe of diesel generator set can be installed with primary muffler and secondary muffler respectively. The primary muffler is brought by the generator set, and the secondary muffler is impedance composite muffler with a muffling capacity of more than 30dB(A).
5. Other processing measures
Through the machine tube, cable trench with sound insulation pipeline, cable through the body of the machine with ultra-fine glass wool fill cross, the implementation of soft contact to prevent solid noise wave propagation.
