| 摘要 |
In a turbine of the type in which the cylinder or stator casing is supported by a vertical wall, vertical motion at the rotor centerline, due to thermal expansion, is caused mainly by expansion of the stator casing. If the casing is effectively fixed at the bottom, as in prior structures, the thermal expansion of the casing adds to the expansion of the rest of the supporting structure. The disclosed support structure introduces flexibility into the supporting wall along the lower portion of the casing, thereby causing the expansion of the casing to be subtracted from the expansion of the rest of the supporting structure.
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