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Nuovo Pignone Tecnologie Srl

Nuovo Pignone Srl

Michele D'Ercole

Antonio Asti

Giovanni Tonno

Mariateresa Paci

Jesse Floyd Stewart

Luciano Mei

Craig Allen Bielek

Matteo Berti

Ya-Tien Chiu

Stefano Francini

Paolo Del Turco

Massimiliano Mariotti

Antonio Baldassarre

Andrea Ronchieri

Stefano Cioncolini

Simone Bei

Alberto Ceccherini

Simone Billi

Alessandro Szorenyi

Alessandro Russo

Giacomo Landi

Stefania Della Gatta

Marco Ulivi

Massimo Betti

Francesco Maria Orgero

Allesandro Russo

Paola Del Turco

Stefano Cei

Jesse F Stewart

A gas turbine fuel nozzle for a combustor of a gas turbine engine comprises a sleeve with an internal duct for premixed fuel gas flow; it further comprises a flame ionization sensor located on the sleeve externally to the duct; typically, the combustor has a single annular-shaped chamber.

Gas turbine fuel nozzle with integrated flame ionization sensor and gas turbine engine

A compressed-air energy-storage system, comprising: a variable-nozzle expander configured to receive an airflow at a first pressure and partially expand said airflow at a second pressure, said second pressure being lower than said first pressure, expansion of said airflow in said variable-nozzle expander producing useful mechanical power; a heat generator component configured to receive a fuel and a partially expanded airflow from the variable-nozzle expander; and a turbine configured to receive combustion gas from the heat generator component and expand the combustion gas producing useful mechanical power.

Compressed-air energy-storage system

Method, system and axial multistage expander including a casing and a plurality of stages. A stage includes a stator part connected to the casing and having plural statoric airfoils, and a rotor part configured to rotate relative to the stator part and having plural rotoric airfoils. The axial multistage expander also includes a support mechanism connected to the casing and configured to rotatably support the rotor part. Rotoric airfoils of at least one stage of the plurality of stages are configured to rotate with a speed different from rotoric airfoils of the other stages. The stator part, the rotor part and the support mechanism of the plurality of stages are provided inside the casing.

Geared axial multistage expander device, system and method

A vessel of a heat storage and release apparatus, the vessel comprises a shell comprising a metallic material, the shell having an elongated shape with a first end region and a second end region remote from the first end region, and an internal surface defining a cavity configured to contain a heat storage and release device and to guide gas-flow; a first opening through the shell for a flow of gas at high temperature and high pressure, the first opening being located in the first end region; a second opening through the shell for a flow of gas at low temperature and high pressure, the second opening being located in the second end region; and a lining of thermally insulating material adjacent to the internal surface and only partially covering the internal surface, the lining being located at least in the first end region.

Vessel of a heat storage and release apparatus, heat storage and release assembly, and energy production plant

A method is described for controlling load variations in a gas turbine. The method comprises reducing the flow of gaseous fuel entering the combustor to a predefined minimum value, if an increase is observed in the rotation regime of said turbine above a predefined maximum value and a total reduction in the load, activating a selective feeding sequence of the burners if the turbine is operating in normal functioning or premixed flame mode, modifying the angulation of the adjustable stator vanes, in order to reduce the speed rate of the compressor, and opening one or more anti-surge valves and one or more overboard bleeds, in order to reduce the air flow at the inlet of the combustor.

Method for controlling the load variations in a gas turbine

A nozzle segment is disclosed that includes a first platform configured to be connected with a casing of a gas turbine engine, a second platform configured to be connected with the casing, the second platform being disposed apart from the first platform in a radial direction of the gas turbine engine, and a plurality of blades disposed between the first and second platforms and connected thereto, a portion of an inside surface of the first platform or the second platform being scalloped so as to increase a throat area of the nozzle segment in order to increase the nozzle segment's mass flow rate handling capability.

Turbine inlet guide vane with scalloped platform and related method

A method and apparatus are described for controlling the combustion in a gas turbine. The method includes measuring, with one or two calorimeters, the temperature, calorific value and relative density of a gaseous fuel in order to determine the Wobbe index, comparing the Wobbe index value measured with a predefined Wobbe index value for the gaseous fuel and regulating the temperature of the gaseous fuel with at least one heat exchanger in order to reach the predefined Wobbe index value. The method may also include using a second gaseous fuel, having a different Wobbe index from the gaseous fuel, or a fuel obtained by mixing the gaseous fuel and the second gaseous fuel, according to arbitrary proportions and variable with time.

Method and apparatus for controlling the combustion in a gas turbine

Growing community of inventors

Florence, Italy

Michele D'Ercole