Hydrogen is one of the gases with the lowest specific density, so ventilation loss is low. The fan on the generator rotor in the turbine generator set has high mechanical efficiency. The thermal conductivity of hydrogen is high, which can dissipate quickly. Generator heat and improve high cooling efficiency. Hydrogen does not support combustion. The oxygen content of the generator is less than 2%, so the risk of fire is very low if the generator winding fails.
The generator of the turbogenerator group must therefore be cooled by hydrogen.
A generator whose stator and/or rotor are cooled by hydrogen. There are mainly all hydrogen cooling and stator windings with internal water cooling, the rotor winding and stator core are hydrogen cooled (water hydrogen),and the stator windings and rotor windings with internal water cooling, the stator core is hydrogen cooled (water hydrogen). ).
The windings and iron core of the generator generate heat during operation. In order to avoid burns due to excessive temperature, coolants include air, water, hydrogen, oil, freon, etc. , among which hydrogen is the most widely used because hydrogen has the advantages of good thermal conductivity (thermal conductivity is 8.4 times that of air), low density and diffusion fast. It has a good cooling effect and is easy to carry. and can be recycled.
Must be less than 2.5%. The generator stator cooling water is regulated. The hydrogen content standard should be less than 2.5%, otherwise it will affect normal use. This machine refers to a dimechanical device that converts other forms of energy into electrical energy. steam turbine, diesel engine or other mechanical drive.