DEVICE AND METHOD FOR COOLING A RESERVOIR ZONE OF A TWO-FLOW TURBINE

摘要

1. A steam turbine (10) containing! turbine rotor (20); ! the side (12) facing the generator having the first step (26) with the first reaction, the turbine side (14) having the first step (34) with the second reaction not equal to the first reaction; and! a tubular part (18) located between the side (12) facing the generator and the side (14) of the turbine, while an annular gap (22) is formed between the turbine rotor (20) and the tubular part (18), the difference between the first reaction and the second reaction capable of causing steam flow (46) through the annular gap (22) to reduce the temperature of the turbine rotor (20). ! 2. The steam turbine (10) according to claim 1, in which the first stage (26) on the side facing the generator contains! a plurality of nozzles of the first stage (26) with a side facing the generator; and! a plurality of first blades (30) with the sides facing the generator located at the turbine rotor (20). ! 3. A steam turbine (10) according to claim 2, in which the turbine rotor (20) has at least one through hole configured to direct the steam stream (46) from the first stage (26) with the side facing the generator in the annular clearance (22). ! 4. A steam turbine (10) according to claim 2, in which the first blades (30) with the sides facing the generator have at least one through hole configured to direct steam flow (46) from the first stage (26) with facing the generator side in the annular gap (22). ! 5. A steam turbine (10) according to claim 1, in which the first stage (34) on the turbine side includes a plurality of blades (38) on the turbine side located at the turbine rotor (20). ! 6. A steam turbine (10) according to claim 5, in which the turbine rotor (20) has at least one through hole configured to