Installation of Diesel Generator Intake and Exhaust System
Intake system installation
In order to provide enough fresh air for diesel generator set operation, diesel engine intake should be arranged in the air circulation place outside the engine room. Diesel intake pipes for diesel generator set should be avoided as far as possible and the number of bends should be reduced, or use a large arc transition. The inner diameter of the intake pipe should not be less than 200mm, and the inner wall of the pipe should be smooth without soldering slag particles. Dust and debris should be avoided during installation. At the same time, the connecting pipe between air filter and diesel supercharger must be well sealed and no cracks and leakage should be found. The air filter inlet should be properly protected (such as a protective net) to prevent water or foreign matter from entering the diesel engine. The air inlet should be located away from all kinds of heat sources, and the exhaust gas from the exhaust pipe should not be inhaled into the intake pipe. If the air filter is installed in the engine room, the engine room must be well ventilated to ensure the normal operation of the diesel engine.
Exhaust system installation
The external exhaust pipe is made of steel pipe, and the turbocharger of the diesel engine must be flexible connected. The inner diameter of the external inlet pipe should be larger than the expansion joint, and too much bending should be avoided. The external exhaust pipe should be firmly fixed to the hull without vibration and its weight should not be applied to the expansion tube of the diesel engine. Expansion joints are not allowed to eliminate misalignment between tubes.
Note: after installation of exhaust system, diesel engine back pressure must not be greater than 6KPA, otherwise diesel engine performance will be affected.
Exhaust system must be able to prevent seawater, rain water, sundries and so on from entering the diesel engine. Due to the high surface temperature of the exhaust pipe when the diesel generator set works, the installation of the exhaust pipe should avoid approaching the flammable object.
Note: In order to prevent fire, scalded staff and other accidents. Please install heat insulation measures on the surface of the external exhaust pipe.
When several diesel generators are installed together, some problems may arise if a general external exhaust pipe is used. When several diesel generating units are working at different times, condensate water produced by diesel engine exhaust will enter the non-working diesel engine and will easily damage the diesel engine parts. Therefore, each diesel engine should use a separate exhaust system. If the exhaust system of diesel generator set needs to add exhaust muffler, the muffler should be reasonably selected and installed to minimize the back pressure of exhaust system caused by muffler installation.
