DUDIN TWIN ROTOR STEPPING TURBINE Russian patent published in 2008 - IPC E21B4/02 F03B13/02 

FIELD: engines and pumps.

SUBSTANCE: invention can be used as a hydraulic turbine for producing electric power, as a pneumatic and hydraulic turbine making a drive in heading machines, as well as in drilling gas and oil holes. Twin rotor stepping turbine incorporates an asynchronous reduction gear. Inner (5) and outer (6) rotors are fitted aligned on the aligned shafts, the outer and inter rotor vanes entering their inter-vane space to come into contact with the inner rotor outer surface and the outer rotor inner surface, respectively, so as to turn the said rotors in turn one way through the designed angle from the acting working clearance which allows filling the rotors' inter-vane space via the slide valves fitted on the turbine inner and outer rotors. Note that the aforesaid rotors are rigidly linked with the aforesaid inner and outer aligned shafts of the asynchronous variable gear ratio reduction gear to allow asynchronous one-way rotation of the twin turbine inner and outer rotors.

EFFECT: smaller turbine overall sizes and higher output.

5 dwg