| 摘要 |
PURPOSE: To provide an inexpensive improved steam turbine having a simple configuration by attaching an extraction pipe to an inner cylinder and constituting a casing alignment and extraction device by a load plate, a flexible plate, alignment lugs, and stiffening gussets. CONSTITUTION: A load in the direction of alignment between an outer cylinder 14 and an inner cylinder 16 is generated due to a difference in friction, imbalance in pressure, reaction of an inlet pipe, and external disturbance such as earthquake, etc., causes reaction in alignment lugs 34a, 34b, and is transmitted to a load plate 30, an extraction pipe 28, and the inner cylinder 16 so that the extraction pipe 28 only reacts for the load. A load in the direction of crossing causes reaction in alignment lugs 34c, 34d and is transmitted to the load plate 30, a flexible plate 32, the extraction pipe 28, and the inner cylinder 16. Consequently, casing alignment and extraction for retrofit of the inner cylinder are enabled by a simple configuration and using an inexpensive material by constituting this steam turbine as mentioned above and ventilating steam from which moisture is removed into a selected section between the outer and inner cylinders.
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