Rotary kinetic fluid motors or pumps – Plural runners supported for relative motion or on separate... – Serially spaced in working fluid flow path
Patent
1990-12-20
1992-01-07
Kwon, John T.
Rotary kinetic fluid motors or pumps
Plural runners supported for relative motion or on separate...
Serially spaced in working fluid flow path
415108, 415134, F01D 1302
Patent
active
050785710
ABSTRACT:
In this multi-cylinder steam turbine, compensation is provided for the axial thermal expansion, from the bearing housing (5) of the medium pressure partial turbine (1), of the low pressure part of the shafting (4) by the low pressure steam feed pipe (15, 16) rigidly connected to the medium pressure partial turbine (1) being rigidly connected to the inner casing (11, 12) of the two-casing low pressure partial turbines (2, 3). Because of the equal temperatures, the part of the shafting (4) mentioned and the low pressure steam feed pipes (15, 16) expand equally so that the axial clearances between the nozzle guide vane and rotor blade rings of the low pressure partial turbines (2, 3) are also substantially retained. The otherwise conventional connecting elements between the medium pressure partial turbines and the low pressure partial turbines with their associated sealing problems on the outer casings disappear.
REFERENCES:
patent: 1684082 (1928-09-01), Allen
patent: 2992809 (1961-07-01), Herbage
patent: 3594095 (1971-07-01), Trassel et al.
patent: 3773431 (1973-11-01), Bellati
patent: 4029432 (1977-06-01), Meylan
patent: 4326832 (1982-04-01), Ikeda et al.
patent: 4744726 (1988-05-01), Remberg
"Moderne westdeutsch Gross-Dampfturbinen", pp. 173-181, 1958, Konstruktion, Author: A. Leitner.
BBC Brown Boveri AG
Kwon John T.
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