Turbine soundproof cover
1、 Overview of turbine soundproof cover:
The sound insulation cover of a steam turbine is a professional equipment for treating steam turbine noise. As the steam turbine is the main equipment in power plants, its application is becoming increasingly widespread. However, the operation of the steam turbine generates high-intensity noise, which seriously affects the working environment of the power plant and endangers human health.
The main types of turbine noise include aerodynamic noise from the fan blades inside the exciter, friction noise between the slip ring and carbon brush, and vibration noise from the carbon brush holder. In addition, some centrifugal fans with air-cooled excitation also have significant aerodynamic noise. The installation of sound insulation covers for Lianyungang Huaneng steam turbines is currently an effective method for controlling turbine noise.
2、 Structure of turbine soundproof cover:
1. Adopting a detachable support frame, soundproof panels are installed on the support frame, which is easy to operate and saves construction time. It can be disassembled during overall maintenance, and only needs to enter the hood through the soundproof door for minor repairs.
2. The soundproofing board adopts a sandwich structure filled with sound-absorbing materials inside hot-dip galvanized steel plates. The outer layer is hot-dip galvanized steel plates, the inner layer is hot-dip galvanized perforated plates, and the middle is filled with 40kg/m3 aluminum silicate as sound-absorbing filler; And use non-woven glass fiber felt as a protective surface; Comprehensive treatment using two methods of sound absorption and insulation.
3. Install air inlet and exhaust outlet, and install fan muffler at the exhaust outlet.
4. Other components equipped include soundproof doors and windows, lighting and ventilation systems, and heat dissipation systems.
5. According to user requirements, the appearance color of the turbine soundproof cover can be selected for surface treatment such as painting.
3、 Installation effect of turbine soundproof cover:
After installing the sound insulation cover for the steam turbine produced by Lianyungang Huaneng Power Auxiliary Equipment Company, the background noise is removed and the noise level is not higher than 75dB (A).
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