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What are the good ways to reduce the noise of diesel generators?
Browse: Release Date: 2019-12-25
What are the good ways to reduce the noise of diesel generators?
The principle of noise reduction treatment in diesel generator room is to reduce noise in the intake and exhaust channels and exhaust system by using high-efficiency sound-absorbing materials and noise reduction and noise reduction devices under the premise of ensuring the ventilation conditions of the diesel generator set without reducing the output power. Make the noise emission meet the national standard (85dba) diesel generator rental.
The most fundamental way to reduce the noise of a generator is to start with the sound source and use some conventional noise reduction techniques; such as mufflers, sound insulation, sound absorption, and vibration isolation are the most effective methods.
1. Reduce exhaust noise. Exhaust noise is the main noise source of the unit, which is characterized by high noise level, fast exhaust speed and difficult management. The use of a special impedance composite muffler can generally reduce the exhaust noise by 40-60dba diesel generators for rent.
2. Reduce axial fan noise. When reducing the cooling fan noise of the generator set, two issues must be considered, one is the pressure loss allowed by the exhaust passage. The second is the required amount of noise reduction. For the above two points, a resistive sheet muffler can be selected.
What are the good ways to reduce the noise of diesel generators?
3.Isolation, sound absorption and vibration isolation of machine room
(1) Sound insulation in the computer room. After the unit's exhaust noise and cooling fan noise are reduced, the remaining main noise sources are diesel engine mechanical noise and combustion noise. The method adopted is to remove all the windows except the necessary internal observation windows connected to the observation room. All holes and holes must be tightly closed. The sound insulation of the brick wall must be above 40dba. Engine room doors and windows are leased by fireproof soundproof doors and windows diesel generators.
(2) Intake and exhaust. After the sound insulation of the computer room, the ventilation and heat dissipation problems in the computer room must be solved. The air inlet should be set on the same line as the generator set and the air outlet. The air inlet should be equipped with a resistive sheet muffler. Because the pressure loss of the air inlet is also within the allowable range, the air volume in and out of the machine room can be naturally balanced, and the ventilation and cooling effect is obvious.
(3) Sound absorption processing. Five walls except the ground in the equipment room can be used for sound absorption. According to the spectral characteristics of the generator set, a perforated plate resonance sound absorption structure is adopted.
(4) The exchange of indoor air and the sound insulation of the machine room will prevent the air in the machine room from being convected when the closed-type water-cooled generator is shut down, and the high temperature in the room cannot be lowered in time. , Coupled with a resistive sheet muffler can solve the problem of diesel generator rental.
(5) Vibration isolation of the unit. Before installation of the generator set, vibration isolation shall be strictly performed in accordance with the relevant information provided by the manufacturer to avoid long-distance transmission of structural sound and continuous radiation of air sound during transmission, which cannot achieve the noise level at the factory boundary. For the existing generating units that require treatment due to exceeding the standard, the vibration of the ground near the unit must be measured. If the vibration is obvious, the generator unit must be isolated from vibration.
From this, it can be seen that after effectively reducing the noise, in order to make the environment of the computer room more beautiful and practical, the sound absorption layer on the wall and ceiling is usually decorated with micro-hole aluminum-plastic punching boards, and the lighting system is reasonably configured, etc. . As a result, the noise of the engine room is effectively reduced, and a good noise reduction effect is achieved, and the diesel generator is rented.
Generator rental -Sichuan Chengtianyi Electromechanical Equipment Co., Ltd. is a company specializing in leasing and selling diesel generators and leasing and selling electromechanical equipment. The company has a wide range of generators and comprehensive services. .