Air cooling: Air cooling is the use of fan air supply, with cold air against the Cummins diesel generator winding end, Cummins diesel generator stator and rotor for blowing heat dissipation, cold air absorb heat into hot air, in the stator and rotor between the initial convergence of breath, in the core of the air duct discharge, through the cooler for cooling. The cooled air is then sent to the generator by the fan for internal circulation to achieve the purpose of heat dissipation. The machine generally uses air cooling for medium and small synchronous Cummins diesel generators.
Hydrogen cooling: Hydrogen cooling is the use of hydrogen as a cooling medium, the heat dissipation performance of hydrogen is better than the heat dissipation performance of air, and most large steam turbine Cummins diesel generators use hydrogen cooling.
Water cooling: Water cooling is the use of stator, rotor double water cooling method. Cold water of the stator water system The external water system flows through the water pipe to the water inlet ring installed on several stator seats, flows through the insulated pipe to each coil, absorbs heat, and then summarizes through the insulated water pipe to the water outlet ring installed on the frame, and then drains into the external water system of the generator for cooling.
The cooling of the rotor water system first enters the water inlet support installed on the side shaft end of the exciter, and then flows into the center hole of the rotating shaft, flows along several meridian holes to the water collection tank, and then flows to each coil through the insulated pipe. After absorbing heat, the cold water flows into the outlet water tank through the insulation pipe, and then flows through the drainage holes on the outer edge of the outlet water tank to the outlet support, and then leads out from the outlet main pipe. Because the heat dissipation performance of water is much higher than that of air and hydrogen, Cummins diesel generators in new large and medium-sized power plants generally use water cooling.
Post time: Nov-27-2023