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5 EP 2 578 800 A1 6 tion, if the radial flow steam turbine employs plural sets of the rotor disk and stator disk along to the axial direction, the air pressure difference can be adjusted among the steam supply routes, and the operation of the radial flow steam turbine will be stable. [0022] Next, the stage number of the rotor blades and stator blades in the radial flow steam turbine can be ad- justed. A stage of the rotor blades comprises the rotor blades arrayed annularly on concentric paths, and the multi-stage rotor blades comprises plural stages mount- ed on the rotor disk along the radial direction. The stator blades are mounted on the stator disk corresponding to the rotor blades on the rotor disk. Effect of the present invention [0023] In the conventional radial flow steam turbine in the prior art, the output can be increased only by the method in which the number of the stages in the mul- ti-stage of the rotor blades is increased because there is only one rotor disk on the rotation shaft, but this method requires very high skill and high cost. If the conventional radial flow steam turbine in the prior art employs the rotor blades on both sides of the rotor disk and plural rotor disk are added to the rotary axial disk in order to form the plural steam passages in the radial outflow direction, the only method for supplying the steam in the prior art is limited to the method forming the steam passage in the rotation shaft. Therefore, the steam will be supplied through the rotating rotation shaft, and a sufficient amount of steam cannot be supplied. The conventional radial flow steam turbine is not in actual use. On the con- trary, the radial flow steam turbine in the present invention can employ the plural sets of the turbine units including the rotor disk and the stator disk installed on the rotation shaft, and the steam can be supplied to every turbine unit via the through opening formed in the vicinity of the rotation shaft. In result, a sufficient amount of the steam can be supplied to every steam passage. [0024] The radial flow steam turbine of the present in- vention can add an arbitrary number of the turbine unit including the rotor disk and the stator disk onto the rota- tion shaft according to the steam supply ability and con- dition. Therefore, the radial flow steam turbine of the present invention can be modified according to the var- ious needs of the facility and the steam supply condition. According to the radial flow steam turbine of the present invention, the wasted heat from the diesel engine in ships, and the wasted heat from garbage disposal facilities turn into re-useable energy by converting the wasted heat energy to electric energy. Carbon oxides can be reduced by utilizing the wasted heat energy emitted from the var- ious processes in the facilities as available electric ener- gy with high efficiency. Brief description of the drawings [0025] Fig.1 is a concept figure of the first radial flow steam turbine 100 in Embodiment 1. Fig.2 is a concept figure showing a part of the dough- nut-shape hollow circular disk fixed to the rotation shaft connected by the plural rotor disk supporters. Fig. 3 is a concept figure showing the steam passage by forming the through hole as a through opening onto the rotor disk. Fig. 4 is a concept figure showing the radial flow steam turbine wherein the unit addition of the turbine unit including the rotor disk and the stator disk along to the rotation shaft. Fig.5 is a concept figure showing the radial flow steam turbine employing a single stage of the rotor blades and stator blades. Fig.6 is a concept figure of the radial flow steam tur- bine wherein the steam is supplied from single side direction. Fig.7 is a concept figure showing the conventional Ljungstrom turbine employing the different rotating direction of the rotor blades. Detailed description of the preferred embodiment [0026] Some embodiments of a radial flow steam tur- bine according to the present invention are described below with reference to the relevant drawing. Needless to add, the claims of the present invention include but are not limited to the embodiments. In each figure, the same number is used for the same component, and the same explanation is omitted appropriately. The drawing is always displaying minute details in a reduced scale, and sometimes features are emphasized to help to un- derstand this invention easily. (Embodiment 1) [0027] The first radial flow steam turbine 100 in em- bodiment 1 according to the present invention is de- scribed. [0028] Fig.1 is a concept figure of the first radial flow steam turbine 100 in Embodiment 1. Fig.1 is a drawing displaying the inside configuration from the side view. [0029] As shown in Fig.1, the first radial flow steam turbine 100 comprises a rotation shaft 10, a rotor disk 20, a stator disk 30 and a casing 40 as basic parts. Fig. 1 only shows the basic parts, so other parts such as pe- ripheral parts and pipes are omitted here in order to ex- plain simply and focus on the operation principle. [0030] The rotation shaft 10 is supported for free rota- tion by a bearing not shown in the figure. The material of rotation shaft 10 is not especially limited, but for example it is a stiff-high strength material in order to secure its stiffness for tolerating dangerous rotation speed higher than the maximum speed of rotations in the operation range for the radial flow steam turbine. There is no danger that the rotor blades crash into each other by adopting a stiff enough axis in order to suppress the occurrence of 5 10 15 20 25 30 35 40 45 50 55 4PDF Image | EP 2 578 800 A1 EUROPEAN PATENT
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