Steam valve driving apparatus, steam valve apparatus, and steam turbine plant
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United States of America Patent
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Jun 14, 2022
Grant Date -
Nov 19, 2020
app pub date -
Mar 9, 2020
filing date -
May 14, 2019
priority date (Note) -
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Abstract
The steam valve driving apparatus according to an embodiment is a steam valve driving apparatus regulating open and close position of a valve body. The steam valve driving apparatus includes: a plurality of hydraulic cylinders that presses the valve body in an opening direction. Each of the hydraulic cylinders includes: a piston rod extending outward from a piston in the opening direction; and an open-side cylinder chamber arranged in the opposite side of the piston with respect to the piston and to which hydraulic oil is supplied. The hydraulic cylinder is disposed on a side opposite to the valve body with respect to a closing spring pressing the valve body in a closing direction.
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