STEAM TURBINE Russian patent published in 2017 - IPC F01D25/26 

FIELD: turbines.

SUBSTANCE: disclosed is steam turbine (100), which may contain turbine section (101), containing rotor (102). Around turbine (100) inner housing (122) is arranged, having upstream end (130), downstream end (132) and outlet hole (134) located at downstream end (132) and providing possibility of waste steam outlet from inner housing (122). Around inner housing (122) outer housing (120) is located, having upstream end (130), downstream end (132) and outlet hole (140) located next to outer housing (120) downstream end (130). Between inner housing (122) and outer housing (120) through channel (144) is passing, through which waste steam passes in direction upstream from inner housing outlet hole (134) to outer housing outlet hole (140). In flow passage (144) between inner housing (122) and outer housing (120) dividing element (160, 260) can be located. Dividing element (160, 260), located in flow passage (144) between inner housing (122) and outer housing (120) directly behind outer housing outlet hole (140), comprises partition, passing in circumferential direction along arc from approximately 160° to approximately 220°, and provides waste steam direction to flow passage (144) lower part (164).

EFFECT: by selecting angular length in circumferential direction efficient control over housings temperature expansion is enabled.

4 cl, 4 dwg