| 摘要 |
PROBLEM TO BE SOLVED: To provide a supporting structure of a turbine casing capable of absorbing the displacement in the right and left direction and in an axial direction for thermal expansion without mounting a beam member as in a conventional center beam system, and capable of firm supporting. SOLUTION: In the supporting structure of a turbine casing, a fix key 6a in the axial direction is provided, which is fitted into the groove 4e on a lower face of base point curved leg parts 4c, 4d and into the groove on an upper face of a bearing pedestal 3b, and the fix key 6a in the axial direction prevents the base point curved leg parts 4c, 4d from moving in the axial direction, while allowing them to move in a direction at right angle to the axial direction along the groove 4e on the lower face and a groove 3s on the upper face. Further, center keys 51a, 51b relatively movable in the axial direction of a turbine rotor, while being prevented from relatively moving in a direction at right angle to the axial direction, are provided between both sides of a lower cabin 1 and both sides of a bearing pedestal 3a, and other curved leg parts than the base point curved leg parts are allowed to slide on a support key 7s fixed on the upper face of the bearing pedestal 3a. COPYRIGHT: (C)2010,JPO&INPIT
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