Basic knowledge of generator set
2022-02-22
Diesel generator set is a type of AC power supply equipment of self owned power station. It is a small independent power generation equipment, which uses internal combustion engine as power to drive synchronous alternator to generate electricity.
Modern diesel generator set consists of diesel engine, three-phase AC brushless synchronous generator, control box (panel), cooling water tank, coupling, fuel tank, muffler and public base. The axial direction of the flywheel housing of the diesel engine and the front end cover of the generator are directly connected by shoulder positioning, and the cylindrical elastic coupling is used to directly drive the rotation of the generator by the flywheel. The connection mode is fixed together by screws to connect the two into a steel body, so as to ensure 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 the vibration of the unit, shock absorbers or rubber damping pads are usually installed at the connection between the main components such as diesel engine, generator, water tank and electrical control box and the underframe.
Diesel generator set is composed of internal combustion engine and synchronous generator. The maximum power of internal combustion engine is limited by the mechanical load and thermal load of parts. Therefore, it is necessary to specify the maximum power of continuous operation of components, which is called rated power. The rated power of AC synchronous generator refers to the rated power output during long-term continuous operation at rated speed, Generally, the ratio between the rated output power of diesel engine and the rated output power of synchronous alternator is called matching ratio. The matching ratio is affected by many factors such as local atmospheric pressure, ambient temperature and relative humidity. For units with general requirements used on the plain, the normal matching ratio value is 1.6; The matching ratio of units with higher requirements shall be taken as.
Modern diesel generator set consists of diesel engine, three-phase AC brushless synchronous generator, control box (panel), cooling water tank, coupling, fuel tank, muffler and public base. The axial direction of the flywheel housing of the diesel engine and the front end cover of the generator are directly connected by shoulder positioning, and the cylindrical elastic coupling is used to directly drive the rotation of the generator by the flywheel. The connection mode is fixed together by screws to connect the two into a steel body, so as to ensure 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 the vibration of the unit, shock absorbers or rubber damping pads are usually installed at the connection between the main components such as diesel engine, generator, water tank and electrical control box and the underframe.
Diesel generator set is composed of internal combustion engine and synchronous generator. The maximum power of internal combustion engine is limited by the mechanical load and thermal load of parts. Therefore, it is necessary to specify the maximum power of continuous operation of components, which is called rated power. The rated power of AC synchronous generator refers to the rated power output during long-term continuous operation at rated speed, Generally, the ratio between the rated output power of diesel engine and the rated output power of synchronous alternator is called matching ratio. The matching ratio is affected by many factors such as local atmospheric pressure, ambient temperature and relative humidity. For units with general requirements used on the plain, the normal matching ratio value is 1.6; The matching ratio of units with higher requirements shall be taken as.