Patent ID: 11933422
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A steam control valve comprising:
a casing;
a valve seat that is formed inside the casing;
a valve disc that is abuttable on the valve seat;
a valve lifting rod that is linked to the valve disc, extends in a vertical direction, and penetrates the casing;
a bushing that is provided to the casing and supports the valve lifting rod slidably;
a lever linked to an upper end of the valve lifting rod; and
an actuator that causes the lever to pivot, wherein
a box section having a downward-facing opening is provided on one end side of the lever,
the box section of the lever loosely fits an overhang section on a side of the valve lifting rod, and
an internal space of the box section of the lever is larger than the overhang section in a vertical direction and a horizontal direction by an amount corresponding to a predetermined value taking into consideration positional shifts of the bushing due to thermal expansion of the casing such that the internal space of the box section allows the overhang section to move with respect to the box section in the vertical direction, in the horizontal direction and in a direction other than the vertical direction and the horizontal direction.