|
Steam turbine protection valves are part of the overall rotating
equipment protection system and include trip, trip throttle and
non-return valves. Steam turbine protection valves prevent
damage to rotating equipment that could be caused by an
emergency operating condition, or in the worst case,
catastrophic destruction because of overspeed.
A control valve is part of the turbine governor system that
regulates the operating speed of the turbine by controlling the
amount of steam admitted into the unit. Control valves can be
designed with hydraulic or pneumatic actuators that respond to
an electric output signal developed by the turbine governor in
response to the load requirement of the driven equipment.
Single or multiple control valves are available, depending on
the power output of the turbine.
 |
|
