Abstract: An actuation system includes a driving ring configured to rotate and having a groove on an internal face facing a central point of the driving ring; at least a linkage attached with a first end to an inside of the groove; and at least a lever arm attached to a second end of the at least a linkage. At least a portion of the at least a linkage stays inside the groove when the driving ring rotates.

Abstract: A turboexpander-compressor system includes an expander configured to expand an incoming gas, a first set of moveable inlet guide vanes configured to control a pressure of the incoming gas, a compressor configured to compress a gas received from the expander, a shaft configured to support and rotate an expander impeller and a compressor impeller, a second set of moveable inlet guide vanes attached to the compressor and configured to control a pressure of the gas input into the compressor, and a controller configured to acquire information about a rotating speed of the shaft, a pressure and a temperature of the incoming gas, a pressure and a temperature of the gas output from the expander, and to control the second set of moveable inlet guide vanes to maximize a ratio between the rotating speed of the shaft and a drop of an enthalpy across the expander, in off-design conditions.

Abstract: A tool is provided. The tool comprises an interchangeable cutting portion and a holder to which the interchangeable cutting portion is adapted to be replaceably mounted. The interchangeable cutting portion comprises a first part with at least one cutting edge and a second part for connection to the holder, the second part being provided with a conical external abutment surface and an external cylindrical screw thread. The holder is provided with an internal cylindrical screw thread, to which the external screw thread is removably screwed, and a conical internal abutment surface, the conical external abutment surface and the conical internal abutment surface being mutually engageable for positioning the cutting portion and the holder relative to one another.

Abstract: A method for assembling turbomachinery having combined particle separation device and flow regulating device is provided. The turbomachinery includes a casing; a compressor attached to an inside of the casing, the compressor having a shaft supported by bearings; and a cooling system mounted inside the casing and configured to cool the bearings of the compressor with a cooling fluid. The cooling system includes a particle separation device configured to separate particles from the cooling fluid, and a flow regulation device that fluidly communicates with the particle separation device without contacting the particle separation device. The flow regulation device is disposed adjacent to the particle separation device within a wall of the casing.

Abstract: A power plant including a thermal machine, an inlet duct for delivering a combustive first fluid in said thermal machine, a ventilation circuit for delivering a cooling second fluid to said thermal machine, the first and/or the second fluid including water therein, and a water recovery device connected with the inlet duct and/or the ventilation circuit for condensing and collecting said water from the first and/or the second fluid, the water recovery device being associated with at least one heat exchanger thermally connected with the inlet duct and/or the ventilation circuit for cooling said first and/or said second fluid beyond the dew point thereof, the water recovery device further including connecting means for delivering the water condensed from the first and/or the second fluid to a water using device.

Abstract: An actuated rotary valves for reciprocating compressors used in oil and gas industry, the valve including a stator with a stator opening, a rotor with a rotor opening, and an actuation mechanism. The actuation mechanism is configured to receive a rotation motion and to actuate the rotor to perform first an axial translation moving away from the stator and then a rotation. The actuation mechanism includes an outer shaft configured to receive the rotation motion, and an inner shaft inside the outer shaft and configured to rotate the rotor. The outer shaft is configured to rotate a predetermined angular displacement while pushing the rotor away from the stator before engaging the inner shaft to rotate together with the rotor.

Abstract: A gas turbine, computer software and a method for controlling an operating point of the gas turbine that includes a compressor, a combustor and at least a turbine is provided. The method comprises: determining an exhaust pressure at an exhaust of the turbine; measuring a compressor pressure discharge at the compressor; determining a turbine pressure ratio based on the exhaust pressure and the compressor pressure discharge; calculating a primary to lean-lean mode transfer threshold reference curve as a function of the turbine pressure ratio, where the primary to lean-lean mode transfer threshold curve includes points at which an operation of the gas turbine is changed between a primary mode to a lean-lean mode; and controlling the gas turbine to change between the primary mode and the lean-lean mode.

Abstract: A method for controlling a plurality of machines and at least a first assembly; the plurality of machines comprises at least a first machine and a second machine; the first assembly is associated with the first and second machines and is arranged to provide a first auxiliary function to the first and second machines; control is carried out by at least a first and a second controllers; the first and the second controllers are associated respectively to the first and second machines and are arranged to control a main function of each of the first and the second machines; the first and the second controllers are associated with the first assembly and are arranged to control an auxillary function of the first assembly; the first and the second controllers maintain a dialog between each other to assure that only one controller controls the first assembly at a time.

Abstract: A closed loop system for producing energy using an Organic Rankine Cycle (ORC) and an ORC fluid, comprising a first solar power source (52) configured to heat an ORC liquid to a saturated ORC liquid, a second solar power source (70) fluidly connected to the first solar power source and configured to vaporize the saturated ORC liquid to become ORC vapor, and a turbo-machine (54) configured to receive ORC vapor and produce mechanical energy by expanding the ORC vapor.

Abstract: An automatic valve comprising a valve seat with first gas flow passages extending there through, and a valve guard having second gas flow passages extending there through. Sealing rings are arranged between the valve guard and the valve seat. A removable seat plate is removably connected to the valve seat and is provided with apertures matching with the first gas flow passages of the valve seat. The sealing rings are resiliently biased by resilient members against the removable seat plate to close the valve. The seat plate and the rings are made of non-metallic material.

Abstract: A torsional mode damping controller system is connected to a converter or placed inside the converter. The converter is driving a drive train including an electrical machine and a non-electrical machine. The controller system includes a first input interface configured to receive a first digital signal from a first phase lock device or a first dynamic observer, a second input interface configured to receive a second digital signal from a second phase lock device or a second dynamic observer, and a controller connected to the first and second input interfaces. The controller is configured to receive the first and second digital signals, compare the first digital signal with the second digital signal, generate control data for a rectifier and/or an inverter of the converter, and send the control data to the rectifier and/or to the inverter.

Abstract: A rotor blade is disclosed herein. The rotor blade comprises a nominal surface profile substantially in accordance with Cartesian coordinates X, Y and Z as set forth in TABLE 1. Wherein X and Y are distances in millimeters which, when connected by smooth, continuing arcs, define airfoil profile sections at each distance Z in millimeters. The airfoil profile sections at the Z distances being joined smoothly with one another to form a complete airfoil shape.

Abstract: Methods, devices and systems capable of performing a hot restart of a compressor driven by a turbine are provided. The turbine has a high speed shaft and a low speed shaft connected to the compressor. A base slow roll speed at which a speed of the low speed shaft is in a slow roll range is maintained at the high speed shaft for a predetermined time. Then, when a vibration amplitude of the compressor is larger than a vibration limit, the maintaining is repeated. Otherwise, a set speed of the high speed shaft is increased, until a current speed of the low speed shaft reaches a minimum operating speed. If, while increasing the set speed, the vibration amplitude becomes larger than the vibration limit, the maintaining is repeated.

Abstract: A method and system for power generation including a turboexpander with at least two expansion stages, the turboexpander being connected to a power generation unit, is provided. The system includes a controller configured to control (i) an angle of a first inlet guide vane provided at an inlet of a first expansion stage of the turboexpander for maintaining an inlet pressure of the first expansion stage in a predetermined range, and (ii) an angle of a second inlet guide vane provided at an inlet of a second expansion stage of the turboexpander. The controller is configured to determine a highest power from determined powers of the power generation unit and a corresponding angle of the second inlet guide vane and to adjust the angle of the second inlet guide vane independent of the angle of the first inlet guide vane to achieve the highest power.

Abstract: A centering device includes a pivoting part configured to pivot around a first axis that extends along an axial direction of a hole formed in the pivoting part; a roller attached to a first end of the pivoting part and configured to rotate; a rod attached to a second end of the pivoting part and configured to move along a second axis; a spring mechanism enclosing a part of the rod and configured to apply a biasing force to the pivoting part; and a rod housing configured to receive an end of the rod and to allow the rod to freely move through the rod housing.

Abstract: Systems and methods for assuring a safe working condition of a dry gas seal when a pump/compressor is in a standstill condition. A small booster compressor is added to boost the pressure of an intermediate buffer gas injected into the chamber between a primary seal and a secondary seal of the dry gas seal. Control components detect when the barrier gas pressure drops below a preconfigured value and when detected, closes a valve in a line to a flare safe area and turns on the compressor. The boosted intermediate buffer gas, Nitrogen or dry air, slows the flow of untreated process gas through the primary seal of the dry gas seal and prevents icing of the primary seal.

Abstract: An aeroderivative gas turbine, including a gas generator, a gas generator rotor, a power turbine section, and a slow turning device, wherein said slow turning device is designed and arranged to keep said rotor in rotary motion after turbine shut-down.

Abstract: A method for controlling the combustion in a gas turbine including measuring, with one or more probes situated adjacent to the combustion chamber of the turbine, the amplitude of the pressure oscillations inside the combustion chamber and the persistence time or cycle of the same oscillations, evaluating the behavior under fatigue conditions of the combustion chamber, by constructing the Wohler curve for a certain material which forms the combustion chamber for a predefined combustion frequency and for the amplitude and cycle values of the pressure oscillations measured, measuring the cumulative damage to the combustion chamber during functioning under fatigue conditions of the turbine using the Palmgren-Miner hypothesis and exerting protection actions of the turbine if the cumulative damage value measured is exceeded.

Abstract: A turbomachine includes a compressor having a cartridge that is configured to slide in and out of an external casing. The turbomachine further includes an electrical motor having a motor shaft configured to be connected to the compressor shaft. A conduit is configured to extend through the statoric part of the compressor or the motor, from a first magnetic bearing to the second magnetic bearing. The conduit includes conduit electrical cables provided inside the conduit and extending from a first end of the conduit to a second end of the conduit; and electrical cables connecting one of the first and second magnetic bearings to an external connector via the conduit electrical cables of the conduit.

Abstract: Gas turbine, computer readable medium, and method for controlling an operating point of the gas turbine that includes a compressor, a combustor and a turbine is provided. The method includes determining a turbine pressure ratio, calculating a primary to lean-lean mode transfer threshold reference curve as a function of the turbine pressure ratio, determining at a first time when an exhaust temperature associated with the operating point is higher than an exhaust temperature of the primary to lean-lean mode transfer threshold reference curve for the same turbine pressure ratio, and changing, after a predetermined time after the first time, a split fuel quantity from a first value to a second value if the exhaust temperature associated with the operating point remains higher than the exhaust temperature of the primary to lean-lean mode transfer threshold reference curve.