| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a steam turbine casing which can prevent steam leak from a flange part of a casing without enhancing a material specification of a bolt or the casing, nor increasing a bolt size even if a steam condition is increased in pressure and temperature. <P>SOLUTION: The steam turbine casing 5 is a steam turbine casing of a divided sturcture. The steam turbine casing includes: the flange part attached to the casing; the bolt penetrated into a hole provided in the flange part; a seal ring attached to an inner surface of the hole provided in the flange part to be matched with a matching surface of the casing; and a nut attached to both ends of the bolt. Moreover, the bolt and the nut fasten the seal ring. <P>COPYRIGHT: (C)2013,JPO&INPIT |
