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Analysis and improvement measures of noise reduction performance of assembled transformer room gate

At present, the main transformer room gate of the prefabricated substation in use generally has the problem of sound leakage. If the noise prevention is not handled well, it will cause the substation noise to disturb the people and affect the construction of a harmonious society. In this paper, the cause of sound leakage is analyzed first. The sound leakage is mainly caused by the deformation and manufacturing error of the gate, the thin shell structure of the gate , and the sound leakage of the air inlet louver. Then, improvement measures are proposed on this basis. The noise reduction performance was optimized by improving the rigidity of the gate body, using multiple gate slits, and using a rotary air intake system. Finally, a new assembly-type substation main transformer room gate was designed accordingly. And a detailed description of the gate structure is presented. After adopting this design, the sound absorption and sound insulation performance of the main transformer room gate of the prefabricated substation has been greatly improved, the ventilation and heat removal performance has been significantly improved as well.