Research on Generator Rental Noise Source Identification and Noise Reduction

Research on Generator Rental Noise Source Identification and Noise Reduction

Generator rentals are often used as backup power sources in shopping malls, residences, construction sites, subways, hospitals, exhibitions, bridge construction projects, factories, industrial and mining, oil fields, institutions, campuses and military industries. The noise control of the generator set is beneficial to reducing environmental noise and To protect the physical and mental health of users, especially in first-tier cities, taking Shenzhen as an example, noise control has been very strict in recent years. Construction sites that exceed noise control standards will be restricted and even required to stop work for rectification. Take a 40 kW diesel generator set For example, we used an analysis method that combined acoustic scanning and subjective evaluation to identify the main noise sources of the generator set, and further confirmed the noise sources with the help of finite element analysis. By adding reinforcement ribs, we proposed the structure of the motor junction box Improvement plan. The test results show that at 0 and 75 percent load, the noise of the generator set is reduced by 2.4 dB(A) and 2.2 dB(A) respectively, effectively reducing the noise of the generator set. The research results provide optimization directions for generator set noise reduction .

Generators are rented as temporary power sources even for mining, field construction site operations, road traffic maintenance, bridge construction, etc. in downtown areas far away from the crowd. However, the speed of sound propagation is very fast and can be felt even from a long distance, and the unit is working Large noise will be generated during the process, causing very serious noise pollution problems. Therefore, it is necessary to identify the noise source of the diesel generator set and take corresponding noise reduction measures to control the noise of the diesel generator set and reduce the noise pollution in the surrounding environment. All are of great significance, not only reducing noise pollution for users, but also giving the city a quiet construction environment.