Patent ID: 9638054
Date: 2017-05-02
CPC Classifications: F01D,F05D,F16H,H02K

Claim:
1. A steam turbine comprising: a turbine main body having blades supported rotatably; a steam channel which is connected to the turbine main body and in which steam flows; a regulating valve configured to linearly move to adjust opening/closing of the steam channel; an opening/closing drive mechanism configured to drive the regulating valve; and a lever member provided so that a longitudinal base end of the lever member is rotatably supported, a longitudinal tip of the lever member is connected to the opening/closing drive mechanism, and a longitudinal intermediate portion of the lever member is connected to the regulating valve, wherein the opening/closing drive mechanism includes: wherein the electric actuator includes: wherein one end of a tension spring acting as a forcible closing means for forcibly closing the regulating valve is attached to a portion of the lever member located closer to the longitudinal tip of the lever member than a position in which the regulating valve is connected to the lever member, wherein the conversion mechanism comprises: wherein the holding member and the electric actuator are rotated by the rotation of the lever member.