How to reduce noise of Volvo diesel generator set

Diesel generator sets usually produce a lot of noise when they are in use. These noises belong to noise pollution, which will bring a lot of troubles to the residents near the generator room. Therefore, how to reduce the noise of diesel generator sets when they are in use becomes a necessary condition. What are the causes of the noise?

How to achieve noise isolation processing of diesel generator set

1, diesel generator room access soundproof: in line with the convenience of diesel generator set in, out and room personnel convenient to set up one or two soundproof doors, with metal frame, with high excellent soundproof material, the thickness of 8cm to 12cm is appropriate.

2. Sound insulation of the air inlet system: silencer groove and sound insulation wall are set up on the air inlet surface, and forced air inlet method is selected to adhere to the fresh air required by the normal operation of the unit.

3. Sound insulation of exhaust system. In order to reduce the ambient temperature of the generator to a maximum extent, a muffler groove and a sound partition wall are set on the exhaust surface.

4, flue noise suppression system: in the smoke pipe outside the machine room equipment two-stage damping muffler, in order to reduce the engine exhaust noise, but also do not affect the emission of exhaust gas.

5, sound absorbing wall and sound absorbing top, equipment suction cup sound material in the machine room, to prevent noise from the top of the machine room and rebound, reduce the number of room noise decibels.

Causes of noise in diesel generator sets

1, the cylinder sends the rhythmic crisp metal tapping sound the static fuel supply timing of the injection pump is too early, adjust the static fuel supply advance Angle of the injection pump.

2. The cylinder sends out a low and unclear knocking sound. The static fuel supply timing of the fuel injection pump is too late.

3. There is a slight and sharp sound when running, especially when running at idle speed, it is clear that the piston pin and the small head bushing hole of the connecting rod are too large. Check whether the inner hole of the connecting rod bushing is worn, if any, replace the connecting rod.

4, running in the cylinder outside the wall to hear the impact, with the diesel engine temperature rise and reduce the gap between the piston and the cylinder liner is too large, replace the piston or replace the cylinder liner according to wear.

5, running, crankcase issued a crash sound when the diesel engine from 1000r/min suddenly reduce the speed of the heavy and powerful impact sound connecting rod bearing wear to match the gap is too large, disassemble the bearing, when necessary to replace the bearing.

6, diesel engine idle, hear the crankshaft before and after channeling collision sound crankshaft thrust bearing wear, axial clearance is too large, resulting in crankshaft before and after channeling check the axial clearance and thrust bearing wear degree, replace thrust bearing when necessary.

7, the cylinder head at the rhythm of the slight tapping sound valve spring broken, or tappet bending, or push rod sleeve wear or valve damage, replace the damaged parts, and adjust the valve clearance

8, diesel engine in the operation of the cylinder head issued a heavy and even, rhythmic knocking sound, with fingers gently pinch the cylinder head cover nut has the feeling of collision.

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.