Generator Hydrogen Cooler For Custom Design For Power Plant

Generator Hydrogen Cooler for Custom Design for Power Plant

When the generator is running, the hydrogen absorbs the heat generated by the stator windings, stator core and rotor windings and other components and the temperature rises. High-temperature hydrogen enters the hydrogen cooler and exchanges heat with the coolant (usually water) flowing in the cooler. The coolant absorbs the heat of the hydrogen gas and increases its temperature, while the hydrogen gas is cooled down, thus realizing the cooling of the generator.
The cooled hydrogen is then sent back to the generator through the pipeline to continue to absorb heat, and so on, forming a closed hydrogen cooling cycle system. At the same time, the coolant continuously circulates under the action of the coolant circulation pump to take away the absorbed heat to maintain the cooling effect of the cooler.

Advantages
Hydrogen density is small, only 7% of the air, in the generator seat hydrogen pressure 0.4MPa, its density is only 50% of the air, can greatly reduce the ventilation loss; has a high thermal conductivity, about 7 times that of the air, the surface heat transfer coefficient of about 1.35 times that of the air, which can effectively improve the cooling efficiency, so that the generator has a larger output capacity per unit of volume of the effective material; Hydrogen cooling is a closed Hydrogen cooling is a closed circulation system, the machine is clean and dust-free for a long time, which can reduce the maintenance cost; the machine is oxygen-free and dust-free, which is conducive to prolonging the life of the insulation; the hydrogen density is low and the closed circulation is in the seat welded with medium-thickness steel plate, which makes the ambient noise smaller; the hydrogen oxygen content in the generator is less than 2%, which makes the risk of fire small in the case of breakdown of the windings.