The impeller of a reaction turbine has a great pressure difference between the front and back. If the impeller is designed, the axial thrust of the impeller will be great, so wheel drum rotors are generally used
The strength of the blade and root of the blade can not be reached, so a rotor with a drum type is adopted to reduce the diameter of the rotor
The speed of the reaction unit is higher than 10 thousand revolutions, and the centrifugal force of the rotor is relatively large, if the impulse impeller structure is adopted,
