F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
F01D 3/04 (2006.01)
Patent
CA 2575682
Disclosed is a steam turbine (1) comprising an exterior housing (2) and an interior housing (3). The exterior housing (2) and the interior housing (3) are provided with a fresh steam supply duct (10). A rotor (5) that encompasses several impeller blades (7) and a thrust-compensating piston (4) is rotatably mounted within the interior housing (3). Said interior housing (3) is equipped with several guide blades (8) that are disposed such that a flow duct (9) comprising several blade stages, each of which comprises a series of impeller blades (7) and a series of guide blades (8), is formed along a specific direction of flow (11). The interior housing (3) is further equipped with a recirculation duct (14) which is embodied as a pipe that communicates between a space (15) located between the interior housing (3) and the exterior housing (2) and the flow duct (9) downstream of a blade stage. The interior housing (3) is additionally equipped with a supply duct (16) that is configured as a pipe which communicates between the space (15) located between the interior housing (3) and the exterior housing (2) and an antechamber (12) of the thrust--compensating piston located between the thrust-compensating piston (4) of the rotor (5) and of the interior housing (3).
L'invention concerne une turbine à vapeur (1) comprenant un carter extérieur (2) et un carter intérieur (3) qui présentent un conduit d'amenée de vapeur vive (10). Un rotor (5) présentant un piston d'équilibrage de poussée (4) et comprenant plusieurs aubes mobiles (7) est monté rotatif à l'intérieur du carter intérieur (3) et le carter intérieur (3) présente plusieurs aubes directrices (8) placées de façon à former, le long d'un sens d'écoulement (11), un conduit d'écoulement (9) à plusieurs étages d'aubes qui présentent respectivement une série d'aubes mobiles (7) et une série d'aubes directrices (8). Le carter intérieur (3) présente un conduit de retour (14) qui est réalisé sous forme d'un tube communicant entre, d'une part, une chambre (15) située entre le carter intérieur (3) et le carter extérieur (2) et, d'autre part, le conduit d'écoulement (9) après un étage d'aubes. Le carter intérieur (3) présente en outre un conduit d'amenée (16) qui est réalisé sous forme d'un tube communicant entre, d'une part, la chambre (15) située entre le carter intérieur (3) et le carter extérieur (2) et, d'autre part, une préchambre de piston d'équilibrage de poussée (12) située entre le piston d'équilibrage de poussée (4) du rotor (5) et le carter intérieur (3).
Deidewig Frank
Kostenko Yevgen
Myschi Oliver
Wechsung Michael
Zander Uwe
Aktiengesellschaft Siemens
Smart & Biggar
LandOfFree
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