Introduction to diesel generator sets

Introduction to diesel generator sets

Diesel generatorsThe diesel generator set is a power supply equipment that uses a diesel engine as power to drive an AC synchronous generator to generate electricity. Diesel generator sets are currently widely used power generation equipment in the world. They are mainly used in telecommunications, finance, national defense, hospitals, schools, commerce, industrial and mining enterprises and Emergency backup power supply for residences; independent power supply for special purposes such as mobile communications, battlefield and field operations, vehicles and ships; independent main power supply for production and life in areas where large power grids cannot be delivered or areas that are not suitable for establishing thermal power plants etc. With the continuous development of science and technology and the application of some new technologies and achievements, diesel generator sets are gradually moving from hand-started and attended ordinary units to automation (self-starting, unattended, remote control, remote signaling, telemetry), Develop in the direction of low emissions and low noise to meet the higher requirements of modern society for diesel generator sets.

Diesel generator set is a kind of internal combustion generator set, which is composed of diesel engine, AC synchronous generator, control box (screen), coupling and common base. Generally produced complete sets use a common base to connect the diesel engine and The main components such as AC synchronous generator and control box (screen) are installed together to form a whole, that is, an integrated diesel generator set. For high-power units, in addition to the diesel engine and generator being installed on a common base welded by section steel, the control Equipment such as screens, fuel tanks and water tanks need to be individually designed to facilitate movement and installation.

The flywheel housing of the diesel engine and the front end cover of the generator are directly connected to each other in the axial direction using shoulder positioning, and a cylindrical elastic coupling is used to directly drive the generator to rotate from the flywheel. This connection method is fixed together by screws, so that the two The connection into one body ensures that the concentricity of the crankshaft of the diesel engine and the rotor of the generator is within the specified range.

In order to reduce noise, the unit generally needs to be installed with a special muffler, and in special cases the unit needs to be fully shielded. In order to reduce the vibration of the unit, the connections between the main components such as the diesel engine, generator, control box and water tank and the public base are usually Equipped with vibration absorbers or rubber vibration pads. Some control boxes also adopt level 2 vibration reduction measures.