Prevent air compressor noise and axial fan noise from propagating along this exhaust vent

The air compressor room noise control is mainly proposed for the unit ventilation and vents, the engine room air inlet, the air outlet and the doors and windows. According to the normal operation requirements of the compressor, the temperature in the equipment room must not exceed 45e. After the noise is controlled, the temperature in the equipment room should be lower than 45e to ensure the normal operation of the unit. Inlet and outlet to ensure ventilation and cooling of the equipment room, the six axial fans on the original wall must be fully activated. In addition, according to the heat balance calculation, the lower air inlet needs to be enlarged, and a direct air inlet is required, for a total of five. A three-stage axial flow fan is equipped with an axial flow fan type resistive muffler, which prevents air compressor noise and axial fan noise from propagating along the exhaust vent.

The existing windows on the doors and windows are all replaced with standard sound insulation windows, double-layer 5mm thick glass plates, the total thickness is 200-280mm, the inner layer is inclined, and the sound absorption structure is surrounded. The two main doors of the 1# compressor room are all replaced with soundproof doors with soundproof windows on the doors. The exhaust port of the two cooling towers of the open-air pumping station and the cooling tower are designed and installed with a cooling tower muffler. The muffler is a waterproof ring-shaped resistive structure with a ring-shaped muffler, a perforated plate cover, filled with waterproof ultra-fine glass wool, and designed for noise reduction. 10dB(A) or more.

Ensure normal air intake and heat dissipation. The sound absorbing layer of the air venting passage and the barrier are filled with waterproof ultra-fine glass wool; the outer shell and the skeleton are composed of 1.5 mm thick steel plate; the barrier thickness is 70 mm. Acoustic measurement and evaluation After the noise control is implemented according to the above method, the noise reduction effect is obtained. The result measured at 1m at the west gate is that the equivalent sound level at night is 50.0dB, and the equivalent sound level is 52.3dB. In line with the requirements of the standard of cockroaches in the noise standard of industrial enterprises (GB12348-90), it passed the acceptance of the environmental protection department. The use of the completion in the past two years shows that the noise control engineering design is economically reasonable and has achieved the intended purpose, and all aspects of the enterprise and society are satisfactory.