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EP 2 578 800 A1 EUROPEAN PATENT

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EP 2 578 800 A1 EUROPEAN PATENT ( ep-2-578-800-a1-european-patent )

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(19) TEPZZ 5788ZZA_T (11) EP 2 578 800 A1 EUROPEAN PATENT APPLICATION published in accordance with Art. 153(4) EPC (51) Int Cl.: (12) (43) (21) (22) (84) (30) (54) (57) Date of publication: 10.04.2013 Bulletin 2013/15 Application number: 11786806.7 Date of filing: 27.05.2011 Designated Contracting States: ALATBEBGCHCYCZDEDKEEESFIFRGB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PLPTRORSSESISKSMTR Priority: 21.02.2011 JP 2011034506 28.05.2010 JP2010136574 RADIAL FLOW STEAM TURBINE F01D 1/06 (2006.01) (86) International application number: PCT/JP2011/062745 (87) International publication number: WO 2011/149111 (01.12.2011 Gazette 2011/48) (71) Applicant: Ohbo, Teruhiko Hyogo 654-0142 (JP) (72) Inventor: Ohbo, Teruhiko Hyogo 654-0142 (JP) (74) Representative: Horn Kleimann Waitzhofer Elsenheimerstrasse 65 80687 Mùˆnchen (DE) Provided is a high-efficiency, realistic, radial flow steam turbine such that the steam supply method is sim- plified, and that a sufficient amount of steam is supplied to the interior of a turbine unit which is additionally pro- vided in the axial direction. The radial flow steam turbine is equipped with a rotation shaft; a rotor disk connected to the rotation shaft; rotor blades are mounted on the rotor disk; stator disks which face the rotor disk are sup- ported by a casing by being fixed thereto; stator blades are mounted on the stator disk; and an operating steam circulation path is formed wherein the rotor blades on the rotor disk and the stator blades on the stator disk are alternately disposed in the radial direction, and wherein the flow direction of operating steam is in a radial direction which is outward with respect to the rotation shaft. Also, the radial flow steam turbine is configured in such a way that the steam supplied by a steam supply source is cir- culated as operating steam in the operating steam path, and that thereby the rotor disk and the rotation shaft are rotated. In this radial flow steam turbine, openings are provided in those areas of the rotor disk in the vicinity of the rotation shaft, with the result that an axial steam sup- ply passage is secured. Printed by Jouve, 75001 PARIS (FR) EP 2 578 800 A1

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