SCREW-ROTOR STEAM MACHINE Russian patent published in 1998 - IPC

FIELD: mechanical engineering. SUBSTANCE: machine has case 1 with high- pressure chamber 2 accommodating drive and driven screws 3,4 which are in mesh and are mounted on shafts 5,6. The latter are mounted in supports 7,8 and coupled through synchronizing gears 9. Chamber 2 communicates with inlet and outlet pipes 10,12. Case 1 accommodates circulating-oil chambers 18,19 separated from chamber 2 by means of seals. Machine is provided with radial and axial thrust release facilities. During thermal-to-mechanical energy conversion, desired proportions of condensate mass m₁ and coolant mass m₂, coolant volume in transfer of thermal energy to be converted into mechanical energy are maintained. These proportions are determined by adequate choice of geometry of high-pressure chamber 2 and screws 3,4. EFFECT: improved design. 8 cl, 4 dwg