摘要:
The invention relates to an architecture for a propulsion system of a multi-engine helicopter including turboshaft engines connected to a power gearbox. Said architecture is characterized in that it includes: - at least one hybrid turboshaft engine (20) capable of operating in at least one standby mode during a stabilized coasting flight of the helicopter; - at least two chains (30, 40) for controlling each hybrid turboshaft engine (20), each chain (30, 40) including an electrical machine (31, 41) connected to the hybrid turboshaft engine (20) and being suitable for rotating a gas producer thereof; and - at least one source (33, 43) for supplying electrical power to said electrical machine (31, 41). Each reactivation chain (30, 40) is configured so as to be able to drive said turboshaft engine (20) in at least one operation mode from among a plurality of predetermined modes.
摘要:
There is provided a combined cycle power plant in which a high-pressure steam turbine and an intermediate-pressure steam turbine can operate in a state where amounts of thermal effect thereof are close to a limit value, and capable of reducing start-up time. A combined cycle power plant includes: an exhaust heat recovery boiler 20 that includes a high-pressure superheater 21a which superheats steam for a high-pressure steam turbine 31, and a reheater 22 which reheats steam for an intermediate-pressure steam turbine 32; bypass pipes 26, 27 through which steam bypasses the high-pressure superheater 21a and the reheater 22; bypass valves 104, 105 that regulate flow rates of steam which flows through the bypass pipes 26, 27; and a bypass controller 206 that controls the bypass valves 104, 105 such that a difference between thermal effect-amount margins of the turbines 31, 32 is decreased.
摘要:
Molten carbonate fuel cells are operated with a cathode inlet stream that contains a portion of a combustible gas which may be a hydrocarbon, hydrogen, or other gas that will combine with oxygen to form heat on the cathode catalyst surface. The combustible gases can be reacted in the cathode and/or in a stage that is heat integrated with the cathode. The heat generated by the combustion reaction in the cathode can be used, for example, to allow additional endothermic reactions (such as reforming) to take place in the anode portion of the fuel cell while still maintaining a desirable temperature gradient across the fuel cell. Optionally, the cathode of the fuel cell can be modified to further enhance or control the combustion within the cathode, such as by introducing an additional catalytic surface in the cathode.
摘要:
Provided is a power generator and turbine coupling method for coupling an electric power generator(10), a first turbine (20) and the second turbine (30) in this order, according to an embodiment. The method includes the assembling the power generator (10), the first turbine (20), and the second turbine (30), aligning a generator rotating body (12) of the power generator and a first turbine rotating body (22) of the first turbine, connecting the generator rotating body (12) and the first turbine rotating body (22), and connecting the first turbine rotating body (22) of the first turbine and a second turbine rotating body (32) of the second turbine. The assembling of the second turbine or the connecting of the first turbine rotating body and the second turbine rotating body is performed in parallel with or after the aligning of the generator rotating body and the first turbine rotating body.
摘要:
La machine comprend un étage basse pression (1) et un étage haute pression (2) avec deux rotors indépendants (3, 4) et des organes fixes associés (9, 10, 13, 14) de préparation de fluides combinant des moyens dits compresseur (15, 16) et des moyens dits détendeur (17, 18) et au moins une chambre de combustion (19, 20) dans un volume central délimité, axialement, par les rotors (3,4) et, latéralement, par trois parois (22, 23, 24) sensiblement cylindriques et coaxiales, délimitant deux à deux un conduit (25) extérieur reliant la sortie du compresseur (15) BP à l'entrée du compresseur (16) HP et un conduit (26) interne reliant la sortie du compresseur (16) HP à l'entrée d'une première chambre de combustion (19), dont la sortie alimente le détendeur (18) HP en gaz produits de combustion guidés à l'entrée du détendeur (17) BP, dont la sortie est en communication avec l'extérieur par au moins une ouverture (41) d'échappement des gaz de combustion.
摘要:
L'invention concerne une turbine (10) de turbocompresseur comportant un carter (14) qui délimite une chambre (16) cylindrique circulaire d'axe longitudinal (A) dans laquelle une première roue (40) est montée à rotation autour de l'axe longitudinal (A), et dont la paroi interne (42) comporte un premier orifice d'entrée (26) et un premier orifice de sortie (30), la paroi interne (48) de la chambre (16) comportant un second orifice d'entrée (28) dont la section de passage est commandée, caractérisée en ce que la chambre (16) comporte une cloison transversale (34) qui délimite de façon étanche :
un premier compartiment (36) qui loge la première roue (40), et dont la paroi interne (42) comporte le premier orifice d'entrée (26) et le premier orifice de sortie (30) ; et un second compartiment (38) qui loge une seconde roue (46) montée à rotation autour de l'axe longitudinal (A), et dont la paroi interne (48) comporte le second orifice d'entrée (28) et un second orifice de sortie (32).
摘要:
A gas turbine driven powerplant (10) having one or more compressors (20, 22) for producing a down stream air flow, a compressor heat exchanger (34) positioned down stream of the compressors (20, 22) followed by a side stream flow coolant line (50), a regenerator (58) positioned down stream of the heat exchanger (34) and side stream coolant line (50), a combustor (48) positioned down stream of the regenerator (58), one or more turbines (24, 28) positioned down stream of the combustor (48) and mechanically coupled to the compressors (20, 22), and a power turbine (32) positioned down stream of the turbines (24, 28). Combustible effluent flows through heat exchanger (34) and to combustor (48), and air discharged from the compressors (20, 22) flows through heat exchanger (34) and to coolant line (50) and regenerator (58). Heat is transferred from the compressor discharge air to the combustible effluent, thereby producing cooling air and heating the combustible effluent. Heat exchanger (34) can be a heat exchanger or a methane/steam reformer which produces a hydrogen-rich, low NOx, steam diluted combustible effluent. In alternative embodiments, power output is augmented by injecting cooled compressed air directly into the combustor (48) to increase the mass flow through the turbines (24, 28, 32), and exhaust heat is recuperated with a counter-current flow of combustible and water, or water and air, in a conventional once-through heat recovery unit (118). In further embodiments, a small portion of the cool air is combined with the recuperation water in the heat recovery unit (118) to allow vaporization of the water throughout the initial portion of the heat exchange path and form a two-phased feed of water and air to the combustor (48). Additionally, in all embodiments a portion of the cooled compressed air can be processed by a compressor/expander for providing coolant to the turbines, compressors, and auxiliary equipment.