Abstract: Systems and methods for controlling a clearance between a rotor and a stator of a steam turbine during transient operations rely upon heating or cooling a shell support structure of the steam turbine that supports the stator of the steam turbine. Selectively heating or cooling the shell support structure makes it possible for thermal growth/contraction rates and magnitudes of the shell support structure to better match the thermal growth/contraction rates and magnitudes of a bearing support structure of the steam turbine during transient operations. As a result, the clearance between the rotor and the stator of the steam turbine can be maintained.

Abstract: Systems and methods for controlling a clearance between a rotor and a stator of a steam turbine during transient operations rely upon heating or cooling a shell support structure of the steam turbine that supports the stator of the steam turbine. Selectively heating or cooling the shell support structure makes it possible for thermal growth/contraction rates and magnitudes of the shell support structure to better match the thermal growth/contraction rates and magnitudes of a bearing support structure of the steam turbine during transient operations. As a result, the clearance between the rotor and the stator of the steam turbine can be maintained.

Abstract: The present application provides a turbine rotor and blade assembly for a steam turbine. The turbine rotor and blade assembly may include a rotor, a number of buckets positioned about the rotor, and a locking blade positioned about the rotor. The locking blade may include a multi-piece configuration.

Abstract: A method of monitoring a power generation system that includes a steam turbine that is coupled to a gas turbine engine. The method includes calculating, by a control system, a gas turbine engine power output that is based at least in part on a predefined power generation system power output and a predefined steam turbine power output. The power generation system is operated to generate a power output that is approximately equal to the predefined power generation system power output. A signal indicative of a sensed operating power output of the gas turbine engine is transmitted from a sensor to the control system. A condition of the steam turbine is determined based at least in part on the sensed operating gas turbine engine power output and the calculated gas turbine engine power output.

Abstract: The present application provides a turbine rotor and blade assembly for a steam turbine. The turbine rotor and blade assembly may include a rotor, a number of buckets positioned about the rotor, and a locking blade positioned about the rotor. The locking blade may include a multi-piece configuration.

Abstract: A method of monitoring a power generation system that includes a steam turbine that is coupled to a gas turbine engine. The method includes calculating, by a control system, a gas turbine engine power output that is based at least in part on a predefined power generation system power output and a predefined steam turbine power output. The power generation system is operated to generate a power output that is approximately equal to the predefined power generation system power output. A signal indicative of a sensed operating power output of the gas turbine engine is transmitted from a sensor to the control system. A condition of the steam turbine is determined based at least in part on the sensed operating gas turbine engine power output and the calculated gas turbine engine power output.

Abstract: A method is provided for fabricating a seal ring. The method includes positioning a mount assembly adjacent to at least one of an inner diameter and an outer diameter of an annular seal ring, and securing the annular seal ring to the mounting assembly. The method also includes forming at least one of an admission side hook and a steam joint side hook in the annular seal ring.

Abstract: A bearing assembly includes a thrust bearing casing surrounding a rotating shaft at a location intermediate ends of the rotating shaft, the rotating shaft including an active side shaft thrust plate and an inactive side shaft thrust plate, each of the active side and the inactive side shaft thrust plate affixed to and extending radially from the rotating shaft, wherein the active side shaft thrust plate receives a substantially larger axial force compared to the inactive side shaft thrust plate during operation of the rotating shaft; a first thrust bearing between the thrust bearing casing and the active side shaft thrust plate; and a second thrust bearing between the thrust bearing casing and the inactive side shaft thrust plate. The first thrust bearing and the second thrust bearing are of a different type, e.g., a tilting pad bearing and a land bearing including a tapered land and/or flat land.

Abstract: Systems and methods of detecting and correcting the undesirable operation of a turbine by monitoring one or more sensor devices, where each sensor device monitors one or more operating parameter values associated with various turbine components. If any of the sensor devices detects that a particular operating parameter associated with one or more turbine components is operating in a range of unacceptable risk, then corrective action is taken which may include opening and or closing one or more of the steam valves associated with an inlet pipe until that particular operating parameter of the turbine is no longer operating in a range of unacceptable risk.

Abstract: A method is provided for fabricating a seal ring. The method includes positioning a mount assembly adjacent to at least one of an inner diameter and an outer diameter of an annular seal ring, and securing the annular seal ring to the mounting assembly. The method also includes forming at least one of an admission side hook and a steam joint side hook in the annular seal ring.

Abstract: Systems and methods of detecting and correcting the undesirable operation of a turbine by monitoring one or more sensor devices, where each sensor device monitors one or more operating parameter values associated with various turbine components. If any of the sensor devices detects that a particular operating parameter associated with one or more turbine components is operating in a range of unacceptable risk, then corrective action is taken which may include opening and or closing one or more of the steam values associated with an inlet pipe until that particular operating parameter of the turbine is no longer operating in a range of unacceptable risk.