Patent ID: 8777565

Claim:
A casing structure for a steam turbine, the casing structure comprising: an outer casing divided horizontally into an upper casing and a lower casing, wherein at least one of the upper casing and the lower casing is divided into at least two parts, one of the two parts being a portion including at least part of a through hole through which a rotor penetrates, the outer casing is divided into the upper casing and the lower casing on a horizontal plane through which the rotor passes, the upper casing is divided into an upper part of an end-plate cone of an end-plate cone portion and an upper block having a top panel, the lower casing is divided into a lower part of an end-plate cone of the end-plate cone portion and a lower block, and a bonding portion on an outer circumference of the end-plate cone portion is formed in an L shape.