Introduction to the noun of generator set

Torque torque of generator set

The torque output from the external flywheel of the generator set is called torque, referred to as torque, and the unit is Nm (Nm) or kilogram meter (kgf.m). It refers to the heat generated by the combustion of fuel after mixing with air in the cylinder, causing the gas to expand and perform work, overcome the friction resistance torque of each part and the torque consumed by driving auxiliary devices (such as fuel injection pumps, cooling water pumps, lighting generators, etc.), and finally passes through the crankshaft to the flywheel to provide the torque used.

The force required by the generator set to drive the diesel engine chassis and towing the farm tools is transmitted to the flywheel, which becomes the counter torque that hinders the rotation of the flywheel, which is usually called the load of the diesel engine. In actual work, the torque transmitted from the flywheel of the generator set should be equal to the load of the diesel engine.

Vibration isolation structure

The diesel generator set adopts a welded base structure and is made of cold welding with medium-thick steel plates and boiler steel plates. The welded end covers at both ends support the ground-insulated tiltable block bearings. A stepped gasket is set between the base foot and the base plate (top plate) so that the load of the base is concentrated on both ends of the foundation, distributed symmetrically on both sides, and quickly attenuated to the middle. The stress distribution of the generator foot is reviewed and adjusted on site to ensure the load distribution at both ends of the stator base, so as to improve the bearing stiffness of the end cover bearing connected to the stator base to reduce the vibration of the unit.

Cooler technology

The diesel generator set intercooler is part of the boost system. When the air is compressed by a high proportion, it will produce very high heat generation, which will reduce the air expansion density and will also cause damage to the engine temperature too high. In order to achieve higher volume efficiency, it is necessary to cool the high-temperature air before injection into the cylinder. This requires the installation of a radiator. The principle is similar to a water tank radiator, which disperses high-temperature and high-pressure air into many small pipes, and the air outside the pipe flows through at high speed, thereby achieving the purpose of cooling (the gas temperature can be reduced from 150 degrees Celsius to about 50 degrees Celsius). Since this radiator is located between the diesel generator set and the turbocharger, it is also called a central cooler, referred to as an intercooler for short. The working principle diagram of the turbocharger, red is high-temperature exhaust gas, and blue is fresh air.