Single HP-MP internal stator for a steam turbine with controlled

Details Single HP-MP internal stator for a steam turbine with controlled Single HP-MP internal stator for a steam turbine with controlled

1990-04-26

1992-09-22

Look, Edward K.

Rotary kinetic fluid motors or pumps

Casing and spaced housing with space vented to working fluid

415114, 415116, 415177, 60653, 60677, 60679, F01D 514

Patent

active

051492474

ABSTRACT:
The HP-MP steam turbine body has a single internal stator surrounding both the HP and the MP portions of the rotor. The internal stator co-operates with the external stator to define axial positioning means for the internal stator and to define a thermal screen for an inter-stator space which is swept with steam taken from one of the last stages of the HP stream. The portions of the internal stator which surround all of the expansion of the HP stream and the hot stages of the MP stream are steam-conditioned in optimum manner, thereby making it possible to reduce the temperature gradient which the internal stator has to withstand, and also the temperature of the fastenings for both of the stators. The internal stator is simple in structure, the dimensioning of the HP-MP body is optimized, as are the fastenings, and the temperature control of the stators.

REFERENCES:
patent: 1773909 (1930-08-01), Korb
patent: 2796231 (1957-06-01), Hertl
patent: 2823891 (1958-02-01), Baker et al.
patent: 3746463 (1973-07-01), Stock et al.
patent: 3754836 (1973-08-01), Bocter et al.
patent: 3773431 (1973-11-01), Bellati et al.
patent: 4053254 (1977-10-01), Chaplin et al.
patent: 4362464 (1982-12-01), Stock
patent: 4628693 (1986-12-01), Riollet
patent: 4844688 (1989-07-01), Clough et al.
patent: 4893983 (1990-01-01), McGreehan

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