How is diesel generator muffled

As a kind of mechanical and electrical equipment to convert the chemical energy of fuel into electric energy, diesel generator set in the degree of modernization gradually improved today, especially with the rapid development of network and communication business, the reliability requirements for power supply equipment is also increasingly enhanced, here we want to focus on the introduction of diesel generator noise causes and solutions.

When the rotational speed of a diesel generator set is 1500rpm, 105 decibels of noise will be generated one meter away from the diesel generator set. In order to prevent noise from coming out of the machine room, the noise reduction project should include the following steps.

First, the machine room out of the entrance of sound absorption and sound insulation processing.

Two, inlet and exhaust air system and exhaust gas discharge system design of muffler air groove.

Three, the exhaust pipe for sound insulation bandage.

This can not only reduce the heat of the diesel generator set into the room, but also reduce the vibration of the unit when working, so as to reduce the noise.

The noise of diesel generator can be divided into three parts: mechanical noise, combustion noise and air dynamic noise.

The first part: mechanical noise is mainly caused by the collision and friction between the moving parts of crankshaft, connecting rod, gear and other components. The control of mechanical noise should be taken at the time of design. For example, the cylinder diameter is reduced, the stroke cylinder diameter ratio is increased, the calibrated speed is reduced, and the low noise diesel generator is developed.

Part Two: Combustion noise from direct injection combustion chambers is often the main source of noise from diesel generators. The combustion noise can be reduced effectively by changing the advance Angle of nozzle.

Part Three: Air dynamic noise can be divided into exhaust, intake and fan noise, generally exhaust noise is the main noise. Sound levels can reach 115-128dBA at 0.5 m from the exhaust port. This noise is most effectively treated with a muffler. The muffler can be combined with the filter.

Jiangsu Meao Power Technology Co., Ltd. is an important manufacturer of diesel generators. The company mainly manufactures and sells diesel generator sets with power of 3-3000kW, mobile power station of 24-600kW, Marine emergency diesel generator set of 24-800kW, gas generator set, heavy oil generator set and all kinds of imported series, special series (trailer, static speaker, mobile lighthouse, container, etc.) diesel generator At the same time, we are engaged in generator set maintenance and after-sale service of generator set accessories.