WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

F01D　NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g.

F01D 1/00 Non-positive-displacement machines or engines, e.g. steam turbines (wit working-fluid flows in opposite axial directions for balancing axial thrust F01D 3/02; with other than pure rotation F01D 23/00; turbines characterised by their use in special steam systems, cycles, or processes, regulating devices therefor F01K)

F01D 1/02 ・with stationary working-fluid guiding means and bladed or like rotor, {e.g. multi-bladed impulse steam turbines}(F01D 1/24 takes precedence; without stationary working-fluid guiding means F01D 1/18)

F01D 1/023 ・・{the working-fluid being divided into several separate flows (F01D 3/02 takes precedence); several seperate fluid flows being united in a single flow; the machine or engine having provision for two or more different possible fluid flow paths}

F01D 1/026 ・・{Impact turbines with buckets, i.e. impulse turbines e.g. Pelton turbines (F01D 1/16, F01D 1/34 take precedence)}

F01D 1/04 ・・traversed by the working-fluid substantially axially

F01D 1/06 ・・traversed by the working-fluid substantially radially

F01D 1/08 ・・・having inward flow

F01D 1/10 ・・having two or more stages subjected to working-fluid flow without essential intermediate pressure change, i.e. with velocity stages (F01D 1/12 takes precedence)

F01D 1/12 ・・with repeated action on same blade ring

F01D 1/14 ・・・traversed by the working-fluid substantially radially

F01D 1/16 ・・characterised by having both reaction stages and impulse stages

F01D 1/18 ・without stationary working-fluid guiding means; (F01D 1/24, F01D 1/32, F01D 1/34 take precedence; {with pressure-velocity transformation exclusively in rotor F01D 1/32})

F01D 1/20 ・・traversed by the working-fluid substantially axially

F01D 1/22 ・・traversed by the working-fluid substantially radially

F01D 1/24 ・characterised by counter-rotating rotors subjected to same working fluid stream without intermediate stator blades or the like

F01D 1/26 ・・traversed by the working-fluid substantially axially

F01D 1/28 ・・traversed by the working-fluid substantially radially

F01D 1/30 ・characterised by having a single rotor operable in either direction of rotation, e.g. by reversing of blades (combinations of machines or engines F01D 13/00)

F01D 1/32 ・with pressure velocity transformation exclusively in rotor, e.g. the rotor rotating under the influence of jets issuing from the rotor, {e.g. Heron turbines (the working fluid being a combustion products F02C 3/165; jet propulsion plants per se F02K)}

F01D 1/34 ・characterised by non-bladed rotor, e.g. with drilled holes (F01D 1/32 takes precedence; sirens G10K 7/00{impact turbines with buckets F01D 1/026; hand-held tools with a non-bladed rotor F01D 15/067})

F01D 1/36 ・・using fluid friction

F01D 1/38 ・・of the screw type

F01D 3/00 Machines or engines with axial-thrust balancing effected by working-fluid

F01D 3/02 ・characterised by having one fluid flow in one axial direction and another fluid flow in the opposite direction

F01D 3/025 ・・{with a centrally disposed radial stage}

F01D 3/04 ・axial thrust being compensated by thrust-balancing dummy piston or the like

F01D 5/00 Blades; Blade-carrying members (nozzle boxes F01D 9/02); Heating, heat-insulating, cooling or anti-vibration means on the blades or the members {special arrangements in rotors dealing with breaking off of part thereof F01D 21/045}

F01D 5/005 ・{Repairing methods or devices}

F01D 5/02 ・Blade-carrying members, e.g. rotors (rotors of non-bladed type F01D 1/34; stators F01D 9/00){selecting particular materials F01D 5/28}

F01D 5/021 ・・{for flow machines or engines with only one axial stage (for more than one stage F01D 5/06)}

F01D 5/022 ・・{with concentric rows of axial blades}

F01D 5/023 ・・{of the screw type}

F01D 5/025 ・・{Fixing blade carrying members on shafts (attachment of a member on a shaft in general F16D 1/06; for non-positive displacement pumps F04D 29/00)}

F01D 5/026 ・・{Shaft to shaft connections}

F01D 5/027 ・・{Arrangements for balancing (for balancing rotating bodies in general F16F 15/32; for compensating unbalance G01M 1/36)}

F01D 5/028 ・・{the rotor disc being formed of sheet laminae (rotor blade aggregates of unitary construction F01D 5/34)}

F01D 5/03 ・・Annular blade-carrying members having blades on the inner periphery of the annulus and extending inwardly radially, i.e. inverted rotors

F01D 5/04 ・・for radial-flow machines or engines

F01D 5/041 ・・・{of the Ljungstrom type}

F01D 5/043 ・・・{of the axial inlet- radial outlet, or vice-versa, type}

F01D 5/045 ・・・・{the wheel comprising two adjacent bladed wheel portions e.g. with interengaging blades for damping vibrations}

F01D 5/046 ・・・・{Heating, heat insulation or cooling means}

F01D 5/048 ・・・・{Form or construction}

F01D 5/06 ・・Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections {F01D 5/022, F01D 5/023 take precedence}

F01D 5/063 ・・・{Welded rotors (welding per se B23K)}

F01D 5/066 ・・・{Connecting means for joining rotor-discs or rotor-elements together, e.g. by a central bolt, by clamps}

F01D 5/08 ・・Heating, heat-insulating or cooling means {specially adapted for radial flow machines or engines F01D 5/04}

F01D 5/081 ・・・{Cooling fluid being directed on the side of the rotor disc or at the roots of the blades (F01D 5/087 takes precedence)}

F01D 5/082 ・・・・{on the side of the rotor disc}

F01D 5/084 ・・・・{the fluid circulating at the periphery of a multistage rotor, e.g. of drum type}

F01D 5/085 ・・・{cooling fluid circulating inside the rotor}

F01D 5/087 ・・・・{in the radial passages of the rotor disc}

F01D 5/088 ・・・・{in a closed cavity}

F01D 5/10 ・・Anti- vibration means {(specially adapted for radial flow machines or engines F01D 5/04)}

F01D 5/12 ・Blades ({specially adapted for radial flow machines or engines F01D 5/04}; blade roots F01D 5/30; rotors with blades adjustable in operation F01D 7/00; stator blades F01D 9/02)

F01D 5/14 ・・Form or construction (selecting particular materials, measures against erosion or corrosion F01D 5/28)

F01D 5/141 ・・・{Shape, i.e. outer, aerodynamic form (F01D 5/148 to F01D 5/20 take precedence; blade construction F01D 5/147)}

F01D 5/142 ・・・・{of the blades of successive rotor or stator blade-rows}

F01D 5/143 ・・・・・{Contour of the outer or inner working fluid flow path wall, i.e. shroud or hub contour}

F01D 5/145 ・・・・{Means for influencing boundary layers or secondary circulations (for compressors F04D 29/68)}

F01D 5/146 ・・・・{of blades with tandem configuration, split blades or slotted blades}

F01D 5/147 ・・・{Construction, i.e. structural features, e.g. of weight-saving hollow blades (F01D 5/148, F01D 5/16 and F01D 5/20 take precedence; blade shape F01D 5/141; blades with cooling or heating channels or cavities F01D 5/18; heating, heat-insulating or cooling means on blades F01D 5/18)}

F01D 5/148 ・・・{Blades with variable camber, e.g. by ejection of fluid}

F01D 5/16 ・・・for counteracting blade vibration

F01D 5/18 ・・・Hollow blades, {i.e. blades with cooling or heating channels or cavities (structure of hollow blades in general F01D 5/147)}; Heating, heat-insulating or cooling means on blades

F01D 5/181 ・・・・{Blades having a closed internal cavity containing a cooling medium, e.g. sodium}

F01D 5/182 ・・・・{Transpiration cooling}

F01D 5/183 ・・・・・{Blade walls being porous}

F01D 5/184 ・・・・・{Blade walls being made of perforated sheet laminae}

F01D 5/185 ・・・・{Liquid cooling (F01D 5/181 takes precedence)}

F01D 5/186 ・・・・{Film cooling (F01D 5/187 takes precedence)}

F01D 5/187 ・・・・{Convection cooling}

F01D 5/188 ・・・・・{with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall}

F01D 5/189 ・・・・・・{the insert having a tubular cross-section, e.g. airfoil shape}

F01D 5/20 ・・・Specially-shaped blade tips to seal space between tips and stator {(F01D 5/225 takes precedence)}

F01D 5/22 ・・Blade-to-blade connections, {e.g. for damping vibrations}

F01D 5/225 ・・・{by shrouding}

F01D 5/24 ・・・using wire or the like

F01D 5/26 ・・Antivibration means not restricted to blade form or construction or to blade-to-blade connections {or to the use of particular materials}

F01D 5/28 ・・Selecting particular materials; {Particular measures relating thereto;} Measures against erosion or corrosion

F01D 5/282 ・・・{Selecting composite materials, e.g. blades with reinforcing filaments}

F01D 5/284 ・・・{Selection of ceramic materials}

F01D 5/286 ・・・{Particular treatment of blades, e.g. to increase durability or resistance against corrosion or erosion (F01D 5/288 takes precedence)}

F01D 5/288 ・・・{Protective coatings for blades}

F01D 5/30 ・Fixing blades to rotors; Blade roots; {Blade spacers}

F01D 5/3007 ・・{of axial insertion type}

F01D 5/3015 ・・・{with side plates}

F01D 5/3023 ・・{of radial insertion type, e.g. in individual recesses}

F01D 5/303 ・・・{in a circumferential slot}

F01D 5/3038 ・・・・{the slot having inwardly directed abutment faces on both sides}

F01D 5/3046 ・・・{the rotor having ribs around the circumference}

F01D 5/3053 ・・{by means of pins}

F01D 5/3061 ・・{by welding, brazing}

F01D 5/3069 ・・{between two discs or rings}

F01D 5/3076 ・・{Sheet metal discs}

F01D 5/3084 ・・{the blades being made of ceramics}

F01D 5/3092 ・・{Protective layers between blade root and rotor disc surfaces, e.g. anti-friction layers (F01D 5/288 takes precedence)}

F01D 5/32 ・Locking, e.g. by final locking blades or keys

F01D 5/323 ・・{Locking of axial insertion type blades by means of a key or the like parallel to the axis of the rotor}

F01D 5/326 ・・{Locking of axial insertion type blades by other means}

F01D 5/34 ・Rotor-blade aggregates of unitary construction {e.g. formed of sheet laminae; (discs formed of sheet laminae F01D 5/028; Ceramic materials F01D 5/284, composite materials F01D 5/282)}

F01D 7/00 Rotors with blades adjustable in operation; Control thereof (for reversing F01D 1/30)

F01D 7/02 ・having adjustment responsive to speed

F01D 9/00 Stators (non-fluid guiding aspects of casings, regulating, controlling, or safety aspects, see the relevant groups)

F01D 9/02 ・Nozzles; Nozzle boxes; Stator blades; Guide conduits {e.g. individual nozzles (nozzle boxes F01D 9/047)}

F01D 9/023 ・・{Transition ducts between combustor cans and first stage of the turbine in gas-turbine engines; their cooling or sealings}

F01D 9/026 ・・{Scrolls for radial machines or engines}

F01D 9/04 ・・forming ring or sector

F01D 9/041 ・・・{using blades (F01D 5/148 takes precedence)}

F01D 9/042 ・・・{fixing blades to stators (fixing stator-rings in the casing or to each other F01D 25/246)}

F01D 9/044 ・・・・{permanently, e.g. by welding, brazing, casting or the like}

F01D 9/045 ・・・{for radial flow machines or engines}

F01D 9/047 ・・・{Nozzle boxes}

F01D 9/048 ・・・{for radial admission}

F01D 9/06 ・Fluid supply conduits to nozzles or the like

F01D 9/065 ・・{Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling- ,or sealing fluids (see also F01D 25/16, F01D 25/24 and F01D 25/26)}

F01D 11/00 Preventing or minimising internal leakage of working-fluid, e.g. between stages (sealings in general F16J){sealing arrangements for transition ducts of combustor cans F01D 9/023}

F01D 11/001 ・{for sealing space between stator blade and rotor}

F01D 11/003 ・{by packing rings; Mechanical seals}

F01D 11/005 ・{Sealing means between non relatively rotating elements}

F01D 11/006 ・・{Sealing the gap between rotor blades or blades and rotor}

F01D 11/008 ・・・{by spacer elements between the blades, e.g. independent interblade platforms}

F01D 11/02 ・by non-contact sealings, e.g. of labyrinth type (for sealing space between rotor blade tips and stator F01D 11/08)

F01D 11/025 ・・{Seal clearance control; Floating assembly; Adaptation means to differential thermal dilatations}

F01D 11/04 ・・using sealing fluid, e.g. steam

F01D 11/06 ・・・Control thereof

F01D 11/08 ・for sealing space between rotor blade tips and stator (specially-shaped blade tips therefor F01D 5/20)

F01D 11/10 ・・using sealing fluid, e.g. steam

F01D 11/12 ・・using a rubstrip, e.g. erodible. deformable or resiliently-biased part

F01D 11/122 ・・・{with erodable or abradable material (blades having cutting or grinding tips F01D 5/20)}

F01D 11/125 ・・・・{with a reinforcing structure}

F01D 11/127 ・・・{with a deformable or crushable structure, e.g. honeycomb}

F01D 11/14 ・・Adjusting or regulating tip-clearance, i.e distance between rotor-blade tips and stator casing (rotors with blades adjustable in operation F01D 7/00)

F01D 11/16 ・・・by self-adjusting means (F01D 11/12 takes precedence)

F01D 11/18 ・・・・using stator or rotor components with predetermined thermal response, e.g. selective insulation, thermal inertia, differential expansion

F01D 11/20 ・・・Actively adjusting tip-clearance

F01D 11/22 ・・・・by mechanically actuating the stator or rotor components, e.g. moving shroud sections relative to the rotor

F01D 11/24 ・・・・by selectively cooling-heating stator or rotor components

F01D 13/00 Combinations of two or more machines or engines (F01D 15/00 takes precedence; regulating or controlling, see the relevant groups; combinations of two or more pumps F04; fluid gearing F16H)

F01D 13/003 ・{with at least two independent shafts, i.e. cross-compound}

F01D 13/006 ・{one being a reverse turbine}

F01D 13/02 ・Working-fluid interconnection of machines or engines

F01D 15/00 Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby (regulating or controlling see the relevant groups; aspects predominantly concerning driven devices, see the relevant classes for the devices)

F01D 15/005 ・{Adaptations for refrigeration plants}

F01D 15/02 ・Adaptations for driving vehicles, e.g. locomotives (arrangement in vehicles, see the relevant vehicle classes)

F01D 15/04 ・・the vehicles being waterborne vessels

F01D 15/045 ・・・{Control thereof}

F01D 15/06 ・Adaptations for driving, or combinations with, hand-held tools or the like {control thereof}

F01D 15/062 ・・{Controlling means specially adapted therefor}

F01D 15/065 ・・{with pressure-velocity transformation exclusively in rotor}

F01D 15/067 ・・{characterised by non-bladed rotor}

F01D 15/08 ・Adaptations for driving, or combinations with, pumps

F01D 15/10 ・Adaptations for driving, or combinations with, electric generators

F01D 15/12 ・Combinations with mechanical gearing (driven by multiple engines F01D 13/00)

F01D 17/00 Regulating or controlling by varying flow (for reversing F01D 1/30; by varying rotor-blade position F01D 7/00; specially for starting F01D 19/00; shutting-down 21/00; regulating or controlling in general G05){specially adapted for hand-held tools or the like F01D 15/06}

F01D 17/02 ・Arrangement of sensing elements (sensing elements per se: see the relevant subclasses)

F01D 17/04 ・・responsive to load

F01D 17/06 ・・responsive to speed

F01D 17/08 ・・responsive to condition of working-fluid, e.g. pressure

F01D 17/085 ・・・{to temperature}

F01D 17/10 ・Final actuators (valves in general F16K){blades with variable camber F01D 5/148}

F01D 17/105 ・・{by passing part of the fluid}

F01D 17/12 ・・arranged in stator parts

F01D 17/14 ・・・varying effective cross-sectional area of nozzles or guide conduits

F01D 17/141 ・・・・{by means of shiftable members or valves obturating part of the flow path}

F01D 17/143 ・・・・・{the shiftable member being a wall, or part thereof of a radial diffuser}

F01D 17/145 ・・・・・{by means of valves, e.g. for steam turbines (valves in general F16K)}

F01D 17/146 ・・・・{by throttling the volute inlet of radial machines or engines}

F01D 17/148 ・・・・{by means of rotatable members, e.g. butterfly valves}

F01D 17/16 ・・・・by means of nozzle vanes

F01D 17/162 ・・・・・{for axial flow; i.e. the vanes turning around axes which are essentially perpendicular to the rotor centre line (F01D 17/167 takes precedence)}

F01D 17/165 ・・・・・{for radial flow; i.e. the vanes turning around axes which are essentially parallel to the rotor centre line (F01D 17/167 takes precedence)}

F01D 17/167 ・・・・・{of vanes moving in translation}

F01D 17/18 ・・・varying effective number of nozzles or guide conduits {e.g. sequentially operable valves for steam turbines}

F01D 17/20 ・Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted (sensing elements alone F01D 17/02; final actuators alone F01D 17/10)

F01D 17/205 ・・{Centrifugal governers directly linked to valves}

F01D 17/22 ・・the operation or power assistance being predominantly non-mechanical

F01D 17/24 ・・・electrical

F01D 17/26 ・・・fluid, e.g. hydraulic

F01D 19/00 Starting of machines or engines; Regulating, controlling, or safety means in connection therewith (warming-up before starting F01D 25/10; turning or inching gear F01D 25/34)

F01D 19/02 ・dependent on temperature of component parts, e.g. of turbine-casing

F01D 21/00 Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for

F01D 21/003 ・{Arrangements for testing or measuring (for measuring vibrations G01H)}

F01D 21/006 ・{Arrangements of brakes (brakes per se F16D)}

F01D 21/02 ・Shutting-down responsive to overspeed

F01D 21/04 ・responsive to undesired position of rotor relative to stator {or to breaking-off of a part of the rotor}, e.g. indicating such position

F01D 21/045 ・・{special arrangements in stators or in rotors dealing with breaking-off of part of rotor}

F01D 21/06 ・・Shutting-down

F01D 21/08 ・・Restoring position

F01D 21/10 ・responsive to unwanted deposits on blades, in working-fluid conduits or the like

F01D 21/12 ・responsive to temperature

F01D 21/14 ・responsive to other specific conditions

F01D 21/16 ・Trip gear

F01D 21/18 ・・involving hydraulic means

F01D 21/20 ・Checking operation of shut-down devices

F01D 23/00 Non-positive-displacement machines or engines with movement other than pure rotation, e.g. of endless-chain type

F01D 25/00 Component parts, details, or accessories, not provided for in, or of interest apart from, other groups

F01D 25/002 ・{Cleaning of turbomachines}

F01D 25/005 ・{Selecting particular materials}

F01D 25/007 ・{Preventing corrosion}

F01D 25/02 ・De-icing means for engines having icing phenomena

F01D 25/04 ・Antivibration arrangements

F01D 25/06 ・・for preventing blade vibration (means on blade-carrying members or blades 5/00)

F01D 25/08 ・Cooling (of machines or engines in general F01P); Heating; Heat-insulation (of blade-carrying members, of blades F01D 5/00)

F01D 25/10 ・・Heating, e.g. warming-up before starting

F01D 25/12 ・・Cooling

F01D 25/125 ・・・{of bearings}

F01D 25/14 ・・Casings modified therefor (double casings F01D 25/26)

F01D 25/145 ・・・{Thermally insulated casings}

F01D 25/16 ・Arrangement of bearings; Supporting or mounting bearings in casings (bearings per se F16C)

F01D 25/162 ・・{Bearing supports}

F01D 25/164 ・・・{Flexible supports; Vibration damping means associated with the bearing}

F01D 25/166 ・・{Sliding contact bearing (gas bearings F01D 25/22)}

F01D 25/168 ・・・{for axial load mainly}

F01D 25/18 ・Lubricating arrangements (of machines or engines in general F01M)

F01D 25/183 ・・{Sealing means}

F01D 25/186 ・・・{for sliding contact bearing}

F01D 25/20 ・・using lubrication pumps

F01D 25/22 ・・using working-fluid or other gaseous fluid as lubricant

F01D 25/24 ・Casings (modified for heating or cooling F01D 25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M){special arrangements in stators dealing with breaking-off of part of rotor F01D 21/045}

F01D 25/243 ・・{Flange connections; Bolting arrangements (F01D 25/265 takes precedence)}

F01D 25/246 ・・{Fastening of diaphragms or stator-rings}

F01D 25/26 ・・Double casings; Measures against temperature strain in casings

F01D 25/265 ・・・{Vertically split casings; Clamping arrangements therefor}

F01D 25/28 ・Supporting or mounting arrangements, e.g. for turbine casing

F01D 25/285 ・・{Temporary support structures, e.g. for testing, assembling, installing, repairing; Assembly methods using such structures}

F01D 25/30 ・Exhaust heads, chambers, or the like

F01D 25/305 ・・{with fluid, e.g. liquid injection}

F01D 25/32 ・Collecting of condensation water; Drainage {Removing solid particles}

F01D 25/34 ・Turning or inching gear

F01D 25/36 ・・using electric motors