WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

F02C　GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; gas-turbine combustion chambers F23R; using gas turbines in compression refrigeration plants F25B 11/00; using gas-turbine plants in vehicles, see the relevant vehicle classes)

F02C 1/00 Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid (by the use of combustion product F02C 3/00, F02C 5/00)

F02C 1/002 ・{using an auxiliary fluid}

F02C 1/005 ・・{being recirculated}

F02C 1/007 ・{combination of cycles}

F02C 1/02 ・the working fluid being an unheated pressurised gas

F02C 1/04 ・the working fluid being heated indirectly {(in a fluidised-bed combustor F02C 3/205)}

F02C 1/05 ・・characterised by the type or source of heat, e.g. using nuclear or solar energy

F02C 1/06 ・・・using reheated exhaust gas (F02C 1/08 takes precedence)

F02C 1/08 ・・Semi-closed cycles

F02C 1/10 ・・Closed cycles

F02C 1/105 ・・・{construction; details}

F02C 3/00 Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C 5/00)

F02C 3/02 ・using exhaust-gas pressure in a pressure exchanger to compress combustion-air (pressure exchangers per se F04F 13/00)

F02C 3/04 ・having a turbine driving a compressor (power transmission arrangements F02C 7/36; control of working fluid flow F02C 9/16)

F02C 3/045 ・・having compressor and turbine passages in a single rotor-module (F02C 3/073 takes precedence)

F02C 3/05 ・・・the compressor and the turbine being of the radial flow type

F02C 3/055 ・・the compressor being of the positive-displacement type

F02C 3/06 ・・the compressor comprising only axial stages (F02C 3/10 takes precedence)

F02C 3/062 ・・・{the turbine being of the radial-flow type}

F02C 3/064 ・・・{the compressor having concentric stages}

F02C 3/067 ・・・having counter-rotating rotors (F02C 3/073 takes precedence)

F02C 3/073 ・・・the compressor and turbine stages being concentric

F02C 3/08 ・・the compressor comprising at least one radial stage (F02C 3/10 takes precedence)

F02C 3/085 ・・・{the turbine being of the radial-flow type (radial-radial) (F02C 3/05 takes precedence)}

F02C 3/09 ・・・of the centripetal type

F02C 3/10 ・・with another turbine driving an output shaft but not driving the compressor

F02C 3/103 ・・・{the compressor being of the centrifugal type}

F02C 3/107 ・・with two or more rotors connected by power transmission

F02C 3/113 ・・・with variable power transmission between rotors

F02C 3/13 ・・having variable working fluid interconnections between turbines or compressors or stages of different rotors {(controlling flow ratio between different flows of multi-flow jet-propulsion plant, e.g. ducted fan F02K 3/075)}

F02C 3/14 ・characterised by the arrangement of the combustion chamber in the plant (combustion chambers per se F23R; F02C 3/205 takes precedence)

F02C 3/145 ・・{the combustion chamber being in the reverse flow-type}

F02C 3/16 ・・the combustion chambers being formed at least partly in the turbine rotor {or in an other rotating part of the plant}

F02C 3/165 ・・・{the combustion chamber contributes to the driving force by creating reactive thrust}

F02C 3/20 ・using a special fuel, oxidant, or dilution fluid to generate the combustion products

F02C 3/205 ・・{in a fluidised-bed combustor (in combination with a steam cycle see F01K 23/061; fluidised-bed apparatus in general B01J 8/18; fluidised-bed combustors in general F23C 11/02)}

F02C 3/22 ・・the fuel or oxidant being gaseous at standard temperature and pressure (F02C 3/28 takes precedence)

F02C 3/24 ・・the fuel or oxidant being liquid at standard temperature and pressure

F02C 3/26 ・・the fuel or oxidant being solid or pulverulent, e.g. in slurry or suspension

F02C 3/28 ・・・using a separate gas producer for gasifying the fuel before combustion

F02C 3/30 ・・Adding water, steam or other fluids {for influencing combustion, e.g. to obtain cleaner exhaust gases (F02C 7/141, F02C 7/30, F01D 21/00, F01K 21/04, F23D 11/10 take precedence)}

F02C 3/305 ・・・{Increasing the power, speed, torque or efficiency of a gas turbine or the thrust of a turbojet engine by injecting or adding water, steam or other fluids (F01K 21/04 takes precedence)}

F02C 3/32 ・Inducing air flow by fluid jet, e.g. ejector action

F02C 3/34 ・with recycling of part of the working fluid, i.e. semi-closed cycles with combustion products in the closed part of the cycle

F02C 3/36 ・Open cycles

F02C 3/365 ・・{a part of the compressed air being burned, the other part being heated indirectly (in a fluidised-bed combustor F02C 3/205)}

F02C 5/00 Gas-turbine plants characterised by the working fluid being generated by intermittent combustion

F02C 5/02 ・characterised by the arrangement of the combustion chamber in the chamber in the plant (combustion chambers per se F23R)

F02C 5/04 ・・the combustion chambers being formed at least partly in the turbine rotor

F02C 5/06 ・the working fluid being generated in an internal-combustion gas generated of the positive-displacement type having essentially no mechanical power output (internal-combustion engines with prolonged expansion using exhaust gas turbines F02B)

F02C 5/08 ・・the gas generator being of the free-piston type

F02C 5/10 ・the working fluid forming a resonating or oscillating gas column, i.e. the combustion chambers having no positively actuated valves, e.g. using Helmholtz effect

F02C 5/11 ・・using valveless combustion chambers

F02C 5/12 ・the combustion chambers having inlet or outlet valves, e.g. Holzwarth gas-turbine plants

F02C 6/00 Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus (aspects predominantly concerning such apparatus, see the relevant classes for the apparatus); Adaptations of gas- turbine plants for special use

F02C 6/003 ・{Gas-turbine plants with heaters between turbine stages}

F02C 6/006 ・{Open cycle gas-turbine in which the working fluid is expanded to a pressure below the atmospheric pressure and then compressed to atmosperic pressure}

F02C 6/02 ・Plural gas-turbine plants having a common power output

F02C 6/04 ・Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output (F02C 6/18 takes precedence; {for a fluidised-bed combustor F02C 3/205})

F02C 6/06 ・・providing compressed gas (F02C 6/10 takes precedence)

F02C 6/08 ・・・the gas being bled from the gas-turbine compressor

F02C 6/10 ・・supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant

F02C 6/12 ・・・Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure

F02C 6/14 ・Gas-turbine plants having means for storing energy, e.g. for meeting peak loads

F02C 6/16 ・・for storing compressed air

F02C 6/18 ・Using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants (using waste heat as source of energy for refrigeration plants F25B 27/02; using the waste heat of a gasturbine for steam generation or in a steam cycle see F01K 23/10)

F02C 6/20 ・Adaptations of gas-turbine plants for driving vehicles

F02C 6/203 ・・{the vehicles being waterborne vessels}

F02C 6/206 ・・{the vehicles being airscrew driven}

F02C 7/00 Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C 1/00 to F02C 6/00; Air intakes for jet-propulsion plants (controlling F02C 9/00)

F02C 7/04 ・Air intakes for gas-turbine plants or jet-propulsion plants

F02C 7/042 ・・having variable geometry

F02C 7/045 ・・having provisions for noise suppression

F02C 7/047 ・・Heating to prevent icing

F02C 7/05 ・・having provisions for obviating the penetration of damaging objects or particles

F02C 7/052 ・・・with dust-separation devices

F02C 7/055 ・・・with intake grids, screens or guards

F02C 7/057 ・・Control or regulation (conjointly with fuel supply control F02C 9/50, with nozzle area control F02K 1/16)

F02C 7/06 ・Arrangements of bearings (bearings F16C); Lubricating ({of turbo machines F01D 25/18; of machines or} engines in general F01M)

F02C 7/08 ・Heating air supply before combustion, e.g. by exhaust gases

F02C 7/10 ・・by means of regenerative heat-exchangers

F02C 7/105 ・・・of the rotary type (rotary heat exchangers per se F28D)

F02C 7/12 ・Cooling of plants (of component parts, see the relevant subclasses, e.g. F01D; cooling of engines in general F01P)

F02C 7/125 ・・{by partial arc admission of the working fluid or by intermittent admission of working and cooling fluid}

F02C 7/14 ・・of fluids in the plant, {e.g. lubricant or fuel (F02C 7/185 takes precedence)}

F02C 7/141 ・・・of working fluid

F02C 7/143 ・・・・before or between the compressor stages

F02C 7/1435 ・・・・・{by water injection}

F02C 7/16 ・・characterised by cooling medium

F02C 7/18 ・・・the medium being gaseous, e.g. air {(F02C 7/125 takes precedence)}

F02C 7/185 ・・・・{Cooling means for reducing the temperature of the cooling air or gas}

F02C 7/20 ・Mounting or supporting of plant; Accomodating heat expansion or creep

F02C 7/22 ・Fuel supply systems

F02C 7/222 ・・{Fuel flow conduits, e.g. manifolds}

F02C 7/224 ・・Heating fuel before feeding to the burner

F02C 7/228 ・・Dividing fuel between various burners

F02C 7/232 ・・Fuel valves {(control of fuel supply by means of fuel metering valves F02C 9/263)}; Draining valves or systems (valves in general F16K)

F02C 7/236 ・・Fuel delivery systems comprising two or more pumps

F02C 7/2365 ・・・{comprising an air supply system for the atomisation of fuel}

F02C 7/24 ・Heat or noise insulation (air intakes having provisions for noise suppression F02C 7/045; turbine exhaust heads, chambers, or the like F01D 25/30; silencing nozzles of jet-propulsion plants F02K 1/00)

F02C 7/25 ・・Fire protection or prevention (in general A62)

F02C 7/26 ・Starting; Ignition

F02C 7/262 ・・Restarting after flame-out

F02C 7/264 ・・Ignition

F02C 7/266 ・・・Electric (sparking plugs H01T)

F02C 7/268 ・・Starting drives for the rotor, {acting directly on the rotor of the gas turbine to be started}

F02C 7/27 ・・・Fluid drives (turbine starters F02C 7/277)

F02C 7/272 ・・・・generated by cartridges

F02C 7/275 ・・・Mechanical drives

F02C 7/277 ・・・・the starter being a {separate} turbine

F02C 7/28 ・Arrangement of seals

F02C 7/30 ・Preventing corrosion {or unwanted deposits} in gas-swept spaces

F02C 7/32 ・Arrangement, mounting, or driving, of auxiliaries

F02C 7/36 ・Power transmission arrangements between the different shafts of the gas turbine plant, or between the gas-turbine plant and the power user ({F02C 3/107 to F02C 3/13 and}F02C 7/32 take precedence; couplings for transmitting rotation F16D; gearing in general F16H)

F02C 9/00 Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants (controlling air intakes F02C 7/057; controlling turbines F01D; controlling compressors F04D 27/00; controlling in general G05)

F02C 9/16 ・Control of working fluid flow (F02C 9/48 takes precedence; control of air-intake flow F02C 7/057)

F02C 9/18 ・・by bleeding, bypassing or acting on variable working fluid interconnections between turbines or compressors or their stages {(F02C 3/113 takes precedence)}

F02C 9/20 ・・by throttling; by adjusting vanes

F02C 9/22 ・・・by adjusting turbine vanes

F02C 9/24 ・・Control of the pressure level in closed cycles

F02C 9/26 ・Control of fuel supply (F02C 9/48 takes precedence; fuel valves F02C 7/232)

F02C 9/263 ・・{by means of fuel metering valves}

F02C 9/266 ・・{specially adapted for gas turbines with intermittent fuel injection}

F02C 9/28 ・・Regulating systems responsive to plant or ambient parameters, e.g. temperature, pressure, rotor speed (F02C 9/30 to F02C 9/38, F02C 9/44 take precedence)

F02C 9/285 ・・・{Mechanical command devices linked to the throttle lever}

F02C 9/30 ・・characterised by variable fuel pump output

F02C 9/32 ・・characterised by throttling of fuel (F02C 9/38 takes precedence)

F02C 9/34 ・・・Joint control of separate flows to main and auxiliary burners

F02C 9/36 ・・characterised by returning of fuel to sump (F02C 9/38 takes precedence)

F02C 9/38 ・・characterised by throttling and returning of fuel to sump

F02C 9/40 ・・specially adapted to the use of a special fuel or a plurality of fuels

F02C 9/42 ・・specially adapted for the control of two or more plants simultaneously

F02C 9/44 ・・responsive to the speed of aircraft, e.g. Mach number control, optimisation of fuel consumption

F02C 9/46 ・・Emergency fuel control

F02C 9/48 ・Control of fuel supply conjointly with another control of the plant (with nozzle section control F02K 1/17)

F02C 9/50 ・・with control of working fluid flow

F02C 9/52 ・・・by bleeding or by-passing the working fluid

F02C 9/54 ・・・by throttling the working fluid, by adjusting vanes

F02C 9/56 ・・with power transmission control

F02C 9/58 ・・・with control of a variable-pitch propeller