EP3592977B1 - Application of a turbopump to a fluid circuit, particularly to a closed circuit particularly of the rankine cycle type - Google Patents

Application of a turbopump to a fluid circuit, particularly to a closed circuit particularly of the rankine cycle type Download PDF

Info

Publication number
EP3592977B1
EP3592977B1 EP18706447.2A EP18706447A EP3592977B1 EP 3592977 B1 EP3592977 B1 EP 3592977B1 EP 18706447 A EP18706447 A EP 18706447A EP 3592977 B1 EP3592977 B1 EP 3592977B1
Authority
EP
European Patent Office
Prior art keywords
pump
turbopump
turbine
application
closed circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18706447.2A
Other languages
German (de)
French (fr)
Other versions
EP3592977A1 (en
Inventor
Philippe Pagnier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IFP Energies Nouvelles IFPEN
Enogia SA
Original Assignee
IFP Energies Nouvelles IFPEN
Enogia SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IFP Energies Nouvelles IFPEN, Enogia SA filed Critical IFP Energies Nouvelles IFPEN
Publication of EP3592977A1 publication Critical patent/EP3592977A1/en
Application granted granted Critical
Publication of EP3592977B1 publication Critical patent/EP3592977B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/04—Units comprising pumps and their driving means the pump being fluid driven
    • F04D13/043—Units comprising pumps and their driving means the pump being fluid driven the pump wheel carrying the fluid driving means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps

Definitions

  • the present invention relates to the application of a turbopump to a fluidic circuit, in particular to a closed circuit, in particular of the Rankine cycle type.
  • a turbopump is a machine which comprises a turbine and a pump (or a compressor) so that part of the energy recovered by the turbine drives the pump (or the compressor).
  • the turbine and the pump (or the compressor) are mounted at the ends of a single rotating shaft.
  • This machine is provided with lubrication bearings generally placed on the central part of the rotating shaft.
  • the turbine and the pump (or the compressor) are mounted at the ends of this rotating shaft, which requires, on the one hand, relatively long shafts and, on the other hand, a sealing system making it possible to separate the system from effluent lubrication.
  • turbopump will be used for a machine which includes both a turbine and a pump and a turbine and a compressor and the term “pump” will relate both to a pump and to a pump. a compressor.
  • the turbine and the pump are nested one inside the other in such a way that the channels of the turbine and those of the pump are also nested inside each other around the rotating shaft, this which makes it possible to significantly reduce the axial length of the machine.
  • the present invention proposes to further reduce the length of the rotating shaft and therefore the size of the turbopump.
  • the present invention relates to a turbopump comprising a fixed casing comprising a pump with a pump rotor comprising pump vanes and a turbine housing a turbine rotor carrying turbine vanes, characterized in that the turbopump comprises a rotor turbine placed coaxially around the rotor of the pump on the same plane perpendicular to the axis of said rotors.
  • the pump rotor may comprise radial fins bearing on their ends a circumferential belt.
  • the circumferential belt may carry radial turbine rotor vanes disposed coaxially and above the pump rotor vanes.
  • the radial ends of the turbine rotor blades may carry a closed circumferential band substantially coaxial with the belt.
  • the belt may include means for sealing with the fixed casing.
  • the sealing means may comprise a set of labyrinths at each end of the belt.
  • the turbopump has the characteristic of comprising a turbine which is placed on the periphery of the pump.
  • the turbine and the pump, and therefore the turbine and pump rotors are thus both coplanar, because placed on a plane perpendicular to the rotation shaft of the machine, and coaxial, since they are both in rotation. around the same axis of rotation.
  • the X axis of the orthonormal (X, Y, Z) coordinate system of the figure is both the axis of the turbine rotor and the axis of the pump rotor.
  • the turbine and pump rotors are on the same plane, parallel to the YZ plane of the orthonormal (X,Y,Z) frame, the YZ plane of the frame being orthogonal to the X axis.
  • the turbopump 10 comprises a fixed casing 12 which houses the rotating part 14 of a pump 16 (or pump rotor) and the rotating part 18 of a turbine 20 (or turbine rotor).
  • the pump rotor comprises a cylindrical shaft 22 connected at one end to a hub 24 of substantially frustoconical shape with a circumferential wall 26 concave.
  • This wall carries a multiplicity of fins 28 projecting radially from the wall and regularly spaced on the outer periphery of this wall.
  • the fins comprise a leading edge 30 at a distance from the free end of the hub 24, a trailing edge 32 at a distance from the base of the tapered hub 24, and a radial outer end 34 of curvature substantially identical to that of the wall. dished 26.
  • a curved circumferential belt 36 is placed, advantageously by hooping, on the radial ends 34 of the fins, in particular to reduce losses due to flows.
  • This pump rotor is placed in the fixed casing 12 which comprises an axial bearing 38 for receiving the shaft 22 of the pump rotor, a sealing system 39 associated with the bearing 38, an axial inlet 40 of a fluid in regard of the hub 24 and which is coaxial with the bearing while being placed upstream of the fins, and a radial fluid outlet 42 which is in communication with the downstream part of these fins.
  • This outlet 42 is advantageously in the form of a volute to direct the fluid towards the device that it must supply.
  • the pump thus comprises the shaft 22, the hub 24 with the concave wall 26, the fins 28, the belt 36, and a portion of the fixed casing with the bearing 38, the fluid inlet 40 and the fluid outlet 42.
  • the belt 36 carries, on the face opposite the belt carrying the fins 28 of the pump, a multiplicity of fins 44 projecting radially and regularly spaced around the outer circumference of this belt. These fins constitute the fins of the turbine and are coaxial and substantially in the same radial plane as the fins of the pump.
  • the blades of the turbine comprise a leading edge 46, a trailing edge 48, and a radial outer end 50 of curvature substantially identical to that of the belt.
  • a curved circumferential closed band 52 may be placed, advantageously by shrink fitting, on the radial outer ends 50 of the impeller vanes 44 coaxial with the pump vane belt.
  • the turbine rotor is thus formed by the belt 36, the blades 44 of the turbine and possibly the band 52 of the blades of the turbine being mounted on the peripheral part of the rotor of the pump, thus forming an integral part of this pump rotor. .
  • This turbine rotor is placed in the fixed casing 12 which comprises a fluid inlet 54, advantageously in the form of a volute opposite the leading edge 46, turbine blades 44 and a fluid outlet 56 facing each other. of the trailing edge 48 of these turbine blades.
  • This configuration allows direct drive of the compressor by the turbine through the blades of the turbine and the belt.
  • the turbine can operate without an electric power supply, in particular without an electric motor. It is then driven only by the fluid.
  • the pump may not be driven by a power supply. It then does not require an electric motor and is driven only by the turbine.
  • these sealing means can be a set of labyrinths 58, 60 with, as illustrated by way of example in the figure, a lamella 62 formed at each end of the belt which penetrates into grooves 64, 66.
  • one 66 of the grooves is located between the inlet 54 of the turbine and the outlet 42 of the pump and the other 64 of the grooves is located between the inlet 40 of the pump and the outlet 56 of the turbine.
  • Sealing is improved by ensuring, on the one hand, an equal pressure between the outlet of the pump 42 and the inlet of the turbine 54 (high pressure side), on the other hand, an equal pressure between the inlet of the pump 40 and the outlet of the turbine 56 (low pressure side).
  • the turbopump as described above can be used in numerous fields, such as the oil, aeronautics and automobile fields.
  • This turbopump more particularly finds its application with a closed circuit, in particular of the Rankine 68 cycle type as illustrated in the single figure.
  • This closed Rankine cycle circuit is advantageously of the ORC (Organic Rankine Cycle) type and uses an organic working fluid or mixtures of organic fluids, such as butane, ethanol, hydrofluorocarbons.
  • ORC Organic Rankine Cycle
  • closed circuit can also work with a fluid such as ammonia, water, carbon dioxide...
  • the outlet 42 of the pump is connected to a heat exchanger 70, referred to as the evaporator, through which the working fluid compressed by the pump passes and through which the working fluid emerges from this evaporator in the form of compressed vapour.
  • a heat exchanger 70 referred to as the evaporator
  • This evaporator is also traversed by a hot source 72, in liquid or gaseous form so as to be able to transfer its heat to the working fluid.
  • This hot source makes it possible to vaporize the fluid and can come from various hot sources, such as a cooling liquid from a combustion engine, an industrial process, a furnace, hot gases resulting from a combustion (fumes from an industrial process, a boiler, or a turbine, etc.), a heat flow from thermal solar collectors, etc.
  • the outlet of the evaporator is connected to the inlet 54 of the turbine 20 to admit therein the working fluid in the form of compressed vapor at high pressure, this fluid emerging through the outlet 56 of this turbine in the form of expanded vapor at low pressure.
  • the outlet 56 of the turbine is connected to a cooling exchanger 74, or condenser, which makes it possible to transform the expanded low-pressure steam that it receives into a low-pressure liquid fluid.
  • This condenser is swept by a cold source, usually a flow of ambient air or cooling water, so as to cool the expanded vapor so that it condenses and turns into a liquid.

Description

La présente invention se rapporte à l'application d'une turbopompe à un circuit fluidique, notamment à un circuit fermé en particulier de type à cycle de Rankine.The present invention relates to the application of a turbopump to a fluidic circuit, in particular to a closed circuit, in particular of the Rankine cycle type.

Généralement une turbopompe est une machine qui comprend une turbine et une pompe (ou un compresseur) de manière à ce qu'une partie de l'énergie récupérée par la turbine entraîne la pompe (ou le compresseur). Pour ce faire, la turbine et la pompe (ou le compresseur) sont montées aux extrémités d'un unique arbre de rotation.Generally a turbopump is a machine which comprises a turbine and a pump (or a compressor) so that part of the energy recovered by the turbine drives the pump (or the compressor). To do this, the turbine and the pump (or the compressor) are mounted at the ends of a single rotating shaft.

Cette machine est munie de paliers de lubrification placés généralement sur la partie centrale de l'arbre de rotation. La turbine et la pompe (ou le compresseur) sont montées aux extrémités de cet arbre de rotation ce qui nécessite, d'une part, des arbres relativement longs et, d'autre part, un système d'étanchéité permettant de séparer le système de lubrification des effluents.This machine is provided with lubrication bearings generally placed on the central part of the rotating shaft. The turbine and the pump (or the compressor) are mounted at the ends of this rotating shaft, which requires, on the one hand, relatively long shafts and, on the other hand, a sealing system making it possible to separate the system from effluent lubrication.

Pour des raisons de simplification dans la suite de la description, le terme "turbopompe" sera utilisé pour une machine qui comprend aussi bien une turbine et une pompe qu'une turbine et un compresseur et le terme "pompe" concernera aussi bien une pompe qu'un compresseur.For reasons of simplification in the rest of the description, the term "turbopump" will be used for a machine which includes both a turbine and a pump and a turbine and a compressor and the term "pump" will relate both to a pump and to a pump. a compressor.

Comme mieux décrit dans le brevet US 7 044 718 , il est déjà connu de réduire la longueur de l'arbre et par conséquent l'encombrement axial de la turbopompe.As best described in the patent US 7,044,718 , it is already known to reduce the length of the shaft and therefore the axial size of the turbopump.

Dans ce document, la turbine et la pompe sont imbriqués l'un dans l'autre de manière à ce que les canaux de la turbine et ceux de la pompe sont également imbriqués les uns dans les autres autour de l'arbre de rotation, ce qui permet de réduire d'une façon conséquente la longueur axiale de la machine.In it, the turbine and the pump are nested one inside the other in such a way that the channels of the turbine and those of the pump are also nested inside each other around the rotating shaft, this which makes it possible to significantly reduce the axial length of the machine.

De plus, le document US 4,230,564 divulgue une autre turbopompe qui comprend une turbine et une pompe, la turbine et la pompe étant imbriqués l'un dans l'autre.Additionally, the document US 4,230,564 discloses another turbopump which includes a turbine and a pump, the turbine and the pump being nested within each other.

La présente invention se propose de réduire encore d'avantage la longueur de l'arbre de rotation et donc l'encombrement de la turbopompe.The present invention proposes to further reduce the length of the rotating shaft and therefore the size of the turbopump.

Elle permet également de réduire le nombre de paliers et de simplifier les circuits de lubrification.It also makes it possible to reduce the number of bearings and to simplify the lubrication circuits.

A cet effet, la présente invention concerne une turbopompe comprenant un boîtier fixe comportant une pompe avec un rotor de pompe comprenant des ailettes de pompe et une turbine logeant un rotor de turbine portant des ailettes de turbine, caractérisée en ce que la turbopompe comprend un rotor de turbine placé coaxialement autour du rotor de la pompe sur un même plan perpendiculaire à l'axe desdits rotors.To this end, the present invention relates to a turbopump comprising a fixed casing comprising a pump with a pump rotor comprising pump vanes and a turbine housing a turbine rotor carrying turbine vanes, characterized in that the turbopump comprises a rotor turbine placed coaxially around the rotor of the pump on the same plane perpendicular to the axis of said rotors.

Le rotor de pompe peut comprendre des ailettes radiales portant sur leurs extrémités une ceinture circonférentielle.The pump rotor may comprise radial fins bearing on their ends a circumferential belt.

La ceinture circonférentielle peut porter des ailettes radiales de rotor de turbine disposées coaxialement et au-dessus des ailettes du rotor de pompe.The circumferential belt may carry radial turbine rotor vanes disposed coaxially and above the pump rotor vanes.

Les extrémités radiales des ailettes de rotor de turbine peuvent porter une bande fermée circonférentielle sensiblement coaxiale à la ceinture.The radial ends of the turbine rotor blades may carry a closed circumferential band substantially coaxial with the belt.

La ceinture peut comprendre des moyens d'étanchéité avec le boîtier fixe.The belt may include means for sealing with the fixed casing.

Les moyens d'étanchéité peuvent comprendre un jeu de labyrinthes à chaque extrémité de la ceinture.The sealing means may comprise a set of labyrinths at each end of the belt.

Les autres caractéristiques et avantages de l'invention vont apparaître à la lecture de la description qui va suivre, donnée à titre uniquement illustratif et non limitatif, et à laquelle est annexée la figure unique qui montre la turbopompe selon l'invention et son circuit associé.The other characteristics and advantages of the invention will become apparent on reading the following description, given for illustrative and non-limiting purposes only, and to which is appended the single figure which shows the turbopump according to the invention and its associated circuit. .

Sur cette figure, la turbopompe a la caractéristique de comporter une turbine qui est placée en périphérie de la pompe. La turbine et la pompe, et donc les rotors de turbine et de pompe, sont ainsi à la fois coplanaires, car placées sur un plan perpendiculaire à l'arbre de rotation de la machine, et coaxiales puisqu'elles sont toutes les deux en rotation autour du même axe de rotation. En effet, l'axe X du repère (X, Y, Z) orthonormé de la figure est à la fois l'axe du rotor de turbine et l'axe du rotor de pompe. Les rotors de turbine et de pompe sont sur un même plan, parallèle au plan YZ du repère (X,Y,Z) orthonormé, le plan YZ du repère étant orthogonal à l'axe X.In this figure, the turbopump has the characteristic of comprising a turbine which is placed on the periphery of the pump. The turbine and the pump, and therefore the turbine and pump rotors, are thus both coplanar, because placed on a plane perpendicular to the rotation shaft of the machine, and coaxial, since they are both in rotation. around the same axis of rotation. Indeed, the X axis of the orthonormal (X, Y, Z) coordinate system of the figure is both the axis of the turbine rotor and the axis of the pump rotor. The turbine and pump rotors are on the same plane, parallel to the YZ plane of the orthonormal (X,Y,Z) frame, the YZ plane of the frame being orthogonal to the X axis.

La turbopompe 10 comprend un boîtier fixe 12 qui loge la partie tournante 14 d'une pompe 16 (ou rotor de pompe) et la partie tournante 18 d'une turbine 20 (ou rotor de turbine).The turbopump 10 comprises a fixed casing 12 which houses the rotating part 14 of a pump 16 (or pump rotor) and the rotating part 18 of a turbine 20 (or turbine rotor).

Le rotor de pompe comprend un arbre cylindrique 22 relié à une extrémité à un moyeu 24 de forme sensiblement tronconique avec une paroi circonférentielle 26 concave. Cette paroi porte une multiplicité d'ailettes 28 saillantes radialement à partir de la paroi et régulièrement espacées sur le pourtour extérieur de cette paroi. Les ailettes comprennent un bord d'attaque 30 à distance de l'extrémité libre du moyeu 24, un bord de fuite 32 à distance de la base du moyeu tronconique 24, et une extrémité extérieure radiale 34 de courbure sensiblement identique à celle de la paroi concave 26.The pump rotor comprises a cylindrical shaft 22 connected at one end to a hub 24 of substantially frustoconical shape with a circumferential wall 26 concave. This wall carries a multiplicity of fins 28 projecting radially from the wall and regularly spaced on the outer periphery of this wall. The fins comprise a leading edge 30 at a distance from the free end of the hub 24, a trailing edge 32 at a distance from the base of the tapered hub 24, and a radial outer end 34 of curvature substantially identical to that of the wall. dished 26.

Comme mieux visible sur la figure, une ceinture circonférentielle courbe 36 est placée, avantageusement par frettage, sur les extrémités radiales 34 des ailettes, notamment pour réduire les pertes dues aux écoulements.As best seen in the figure, a curved circumferential belt 36 is placed, advantageously by hooping, on the radial ends 34 of the fins, in particular to reduce losses due to flows.

Ce rotor de pompe est placé dans le boîtier fixe 12 qui comprend un palier axial 38 pour la réception de l'arbre 22 du rotor de pompe, un système d'étanchéité 39 associé au palier 38, une entrée axiale 40 d'un fluide en regard du moyeu 24 et qui est coaxiale au palier en étant placé en amont des ailettes, et une sortie radiale 42 de fluide qui est en communication avec la partie avale de ces ailettes.This pump rotor is placed in the fixed casing 12 which comprises an axial bearing 38 for receiving the shaft 22 of the pump rotor, a sealing system 39 associated with the bearing 38, an axial inlet 40 of a fluid in regard of the hub 24 and which is coaxial with the bearing while being placed upstream of the fins, and a radial fluid outlet 42 which is in communication with the downstream part of these fins.

Cette sortie 42 est avantageusement en forme de volute pour diriger le fluide vers l'appareil qu'il doit alimenter.This outlet 42 is advantageously in the form of a volute to direct the fluid towards the device that it must supply.

La pompe comprend ainsi l'arbre 22, le moyeu 24 avec la paroi concave 26, les ailettes 28, la ceinture 36, et une portion du boîtier fixe avec le palier 38, l'entrée 40 de fluide et la sortie 42 de fluide.The pump thus comprises the shaft 22, the hub 24 with the concave wall 26, the fins 28, the belt 36, and a portion of the fixed casing with the bearing 38, the fluid inlet 40 and the fluid outlet 42.

La ceinture 36 porte, sur la face à l'opposé de la ceinture portant les ailettes 28 de la pompe, une multiplicité d'ailettes 44 saillantes radialement et régulièrement espacées sur le pourtour extérieur de cette ceinture. Ces ailettes constituent les ailettes de la turbine et sont coaxiales et sensiblement dans le même plan radial que les ailettes de la pompe. Les ailettes de la turbine comprennent un bord d'attaque 46, un bord de fuite 48, et une extrémité extérieure radiale 50 de courbure sensiblement identique à celle de la ceinture.The belt 36 carries, on the face opposite the belt carrying the fins 28 of the pump, a multiplicity of fins 44 projecting radially and regularly spaced around the outer circumference of this belt. These fins constitute the fins of the turbine and are coaxial and substantially in the same radial plane as the fins of the pump. The blades of the turbine comprise a leading edge 46, a trailing edge 48, and a radial outer end 50 of curvature substantially identical to that of the belt.

De manière similaire à la ceinture des ailettes de la pompe, une bande fermée circonférentielle courbe 52 peut être placée, avantageusement par frettage, sur les extrémités extérieures radiales 50 des ailettes de turbine 44 en étant coaxiale à la ceinture des ailettes de la pompe.Similar to the pump vane belt, a curved circumferential closed band 52 may be placed, advantageously by shrink fitting, on the radial outer ends 50 of the impeller vanes 44 coaxial with the pump vane belt.

Le rotor de turbine est ainsi formé par la ceinture 36, les ailettes 44 de la turbine et éventuellement la bande 52 des ailettes de la turbine en étant monté sur la partie périphérique du rotor de la pompe en formant ainsi partie intégrante de ce rotor de pompe.The turbine rotor is thus formed by the belt 36, the blades 44 of the turbine and possibly the band 52 of the blades of the turbine being mounted on the peripheral part of the rotor of the pump, thus forming an integral part of this pump rotor. .

Ce rotor de turbine est placé dans le boîtier fixe 12 qui comprend une entrée de fluide 54, avantageusement en forme de volute en regard du bord d'attaque 46, des ailettes 44 de turbine et une sortie de fluide 56 en vis-à-vis du bord de fuite 48 de ces ailettes de turbine.This turbine rotor is placed in the fixed casing 12 which comprises a fluid inlet 54, advantageously in the form of a volute opposite the leading edge 46, turbine blades 44 and a fluid outlet 56 facing each other. of the trailing edge 48 of these turbine blades.

Cette configuration permet un entraînement direct du compresseur par la turbine au travers des ailettes de la turbine et de la ceinture.This configuration allows direct drive of the compressor by the turbine through the blades of the turbine and the belt.

La force exercée par le fluide sur les ailettes de la turbine, associée à un rayon important autour du rotor de la pompe contribue à fournir un travail plus élevé que celui qui serait nécessaire pour entraîner le compresseur.The force exerted by the fluid on the blades of the turbine, combined with a large radius around the rotor of the pump contributes to providing a higher work than that which would be necessary to drive the compressor.

Selon un mode de réalisation, la turbine peut fonctionner sans alimentation électrique, notamment sans moteur électrique. Elle n'est alors entraînée que par le fluide.According to one embodiment, the turbine can operate without an electric power supply, in particular without an electric motor. It is then driven only by the fluid.

De la même manière, pour ce mode de réalisation, la pompe peut ne pas être entraînée par une alimentation électrique. Elle ne nécessite alors pas de moteur électrique et n'est entraînée que par la turbine.Likewise, for this embodiment, the pump may not be driven by a power supply. It then does not require an electric motor and is driven only by the turbine.

Ainsi, un travail résiduel est disponible sur l'arbre de la machine pour entraîner tout dispositif mécanique ou électrique, tel qu'un alternateur/générateur par exemple. Ainsi, le système n'utilise aucune alimentation électrique pour son fonctionnement et permet au contraire de récupérer une quantité d'énergie sous forme électrique.Thus, residual work is available on the shaft of the machine to drive any mechanical or electrical device, such as an alternator/generator for example. Thus, the system does not use any electrical power supply for its operation and, on the contrary, makes it possible to recover a quantity of energy in electrical form.

Il est aussi nécessaire d'assurer une étanchéité de la ceinture avec le boîtier et cela grâce à des moyens d'étanchéité disposés sur les extrémités libres de cette ceinture qui sépare la turbine de la pompe.It is also necessary to seal the belt with the casing and this by means of sealing means arranged on the free ends of this belt which separates the turbine from the pump.

Pour cela, ces moyens d'étanchéité peuvent être un jeu de labyrinthes 58, 60 avec, comme illustré à titre d'exemple sur la figure, une lamelle 62 formée à chaque extrémité de la ceinture qui pénètre dans des rainures 64, 66. L'une 66 des rainures est disposée entre l'entrée 54 de la turbine et la sortie 42 de la pompe et l'autre 64 des rainures est située entre l'entrée 40 de la pompe et la sortie 56 de la turbine.For this, these sealing means can be a set of labyrinths 58, 60 with, as illustrated by way of example in the figure, a lamella 62 formed at each end of the belt which penetrates into grooves 64, 66. one 66 of the grooves is located between the inlet 54 of the turbine and the outlet 42 of the pump and the other 64 of the grooves is located between the inlet 40 of the pump and the outlet 56 of the turbine.

L'étanchéité est améliorée en assurant d'une part, une équi-pression entre la sortie de la pompe 42 et l'entrée de la turbine 54 (côté haute pression), d'autre part, une équi-pression entre l'entrée de la pompe 40 et la sortie de la turbine 56 (côté basse pression).Sealing is improved by ensuring, on the one hand, an equal pressure between the outlet of the pump 42 and the inlet of the turbine 54 (high pressure side), on the other hand, an equal pressure between the inlet of the pump 40 and the outlet of the turbine 56 (low pressure side).

La turbopompe telle que décrite ci-dessus peut être utilisée dans de nombreux domaines, comme les domaines pétroliers, aéronautiques, automobiles.The turbopump as described above can be used in numerous fields, such as the oil, aeronautics and automobile fields.

Cette turbopompe trouve plus particulièrement son application avec un circuit fermé, en particulier de type à cycle de Rankine 68 comme illustré sur la figure unique.This turbopump more particularly finds its application with a closed circuit, in particular of the Rankine 68 cycle type as illustrated in the single figure.

Ce circuit fermé à cycle de Rankine est avantageusement de type ORC (Organic Rankine Cycle) et utilise un fluide de travail organique ou des mélanges de fluides organiques, comme du butane, de l'éthanol, des hydrofluorocarbures.This closed Rankine cycle circuit is advantageously of the ORC (Organic Rankine Cycle) type and uses an organic working fluid or mixtures of organic fluids, such as butane, ethanol, hydrofluorocarbons.

Il est bien entendu que le circuit fermé peut également fonctionner avec un fluide comme de l'ammoniac, de l'eau, du dioxyde de carbone...It is understood that the closed circuit can also work with a fluid such as ammonia, water, carbon dioxide...

Ainsi, la sortie 42 de la pompe est reliée à un échangeur de chaleur 70, dénommé évaporateur, traversé par le fluide de travail comprimé par la pompe et grâce auquel le fluide de travail ressort de cet évaporateur sous forme de vapeur comprimée.Thus, the outlet 42 of the pump is connected to a heat exchanger 70, referred to as the evaporator, through which the working fluid compressed by the pump passes and through which the working fluid emerges from this evaporator in the form of compressed vapour.

Cet évaporateur est également parcouru par une source chaude 72, sous forme liquide ou gazeuse de manière à pouvoir céder sa chaleur au fluide de travail. Cette source chaude permet de réaliser la vaporisation du fluide et peut provenir de sources chaudes variées, telles qu'un liquide de refroidissement d'un moteur à combustion, d'un processus industriel, d'un four, de gaz chauds résultant d'une combustion (fumées d'un processus industriel, d'une chaudière, ou d'une turbine, etc.), d'un flux de chaleur issu de capteurs solaires thermiques, etc.This evaporator is also traversed by a hot source 72, in liquid or gaseous form so as to be able to transfer its heat to the working fluid. This hot source makes it possible to vaporize the fluid and can come from various hot sources, such as a cooling liquid from a combustion engine, an industrial process, a furnace, hot gases resulting from a combustion (fumes from an industrial process, a boiler, or a turbine, etc.), a heat flow from thermal solar collectors, etc.

La sortie de l'évaporateur est connectée à l'entrée 54 de la turbine 20 pour y faire admettre le fluide de travail sous forme de vapeur comprimée à haute pression, ce fluide ressortant par la sortie 56 de cette turbine sous forme de vapeur détendue à basse pression.The outlet of the evaporator is connected to the inlet 54 of the turbine 20 to admit therein the working fluid in the form of compressed vapor at high pressure, this fluid emerging through the outlet 56 of this turbine in the form of expanded vapor at low pressure.

La sortie 56 de la turbine est raccordée à un échangeur de refroidissement 74, ou condenseur, qui permet de transformer la vapeur basse pression détendue qu'il reçoit en un fluide liquide basse pression. Ce condenseur est balayé par une source froide, généralement un flux d'air ambiant ou d'eau de refroidissement, de manière à refroidir la vapeur détendue pour qu'elle se condense et se transforme en un liquide.The outlet 56 of the turbine is connected to a cooling exchanger 74, or condenser, which makes it possible to transform the expanded low-pressure steam that it receives into a low-pressure liquid fluid. This condenser is swept by a cold source, usually a flow of ambient air or cooling water, so as to cool the expanded vapor so that it condenses and turns into a liquid.

Bien entendu, les différents éléments du circuit sont reliés entre eux par des conduites de circulation de fluide permettant de les relier successivement.Of course, the various elements of the circuit are interconnected by fluid circulation pipes making it possible to connect them successively.

Claims (7)

  1. Application of a turbopump to a closed circuit, the turbopump (10) comprising a fixed housing (12) containing a pump (16) with a pump rotor (14) comprising pump vanes (28) and a turbine (20) housing a turbine rotor (18) bearing turbine vanes (44), the turbine rotor (18) being positioned coaxially around the rotor of the pump (16) in the one same plane perpendicular to the axis of said rotors.
  2. Application of a turbopump to a closed circuit according to Claim 1, characterized in that the pump rotor (14) comprises radial vanes (28) bearing a circumferential shroud (36) at their radial tips.
  3. Application of a turbopump to a closed circuit according to Claim 2, characterized in that the circumferential shroud (36) bears radial turbine rotor (18) vanes (44) arranged coaxially with and above the vanes (28) of the rotor of the pump (16).
  4. Application of a turbopump to a closed circuit according to Claim 2 or 3, characterized in that the radial tips of the turbine rotor (18) vanes (44) bear a closed circumferential band (52) substantially coaxial with the shroud (36).
  5. Application of a turbopump to a closed circuit according to one of Claims 1 to 4, characterized in that the shroud (36) comprises sealing means (58, 60) for sealing with the fixed housing.
  6. Application of a turbopump to a closed circuit according to Claim 5, characterized in that the sealing means comprise a set of labyrinth seals (58, 60) positioned at each end of the shroud.
  7. Application of a turbopump to a closed circuit according to one of the preceding claims, the closed circuit being of the Rankine or ORC (Organic Rankine Cycle) type.
EP18706447.2A 2017-03-07 2018-02-12 Application of a turbopump to a fluid circuit, particularly to a closed circuit particularly of the rankine cycle type Active EP3592977B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1751848A FR3063775B1 (en) 2017-03-07 2017-03-07 TURBOPUMP FOR A FLUID CIRCUIT, IN PARTICULAR FOR A CLOSED CIRCUIT IN PARTICULAR OF THE RANKINE CYCLE TYPE
PCT/EP2018/053453 WO2018162175A1 (en) 2017-03-07 2018-02-12 Turbopump for a fluid circuit, particularly for a closed circuit particularly of the rankine cycle type

Publications (2)

Publication Number Publication Date
EP3592977A1 EP3592977A1 (en) 2020-01-15
EP3592977B1 true EP3592977B1 (en) 2022-10-19

Family

ID=59070795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18706447.2A Active EP3592977B1 (en) 2017-03-07 2018-02-12 Application of a turbopump to a fluid circuit, particularly to a closed circuit particularly of the rankine cycle type

Country Status (6)

Country Link
US (1) US10895261B2 (en)
EP (1) EP3592977B1 (en)
JP (1) JP7080895B2 (en)
CN (1) CN110382869B (en)
FR (1) FR3063775B1 (en)
WO (1) WO2018162175A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7455706B2 (en) 2020-09-04 2024-03-26 三菱重工業株式会社 pump equipment

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE466165C (en) * 1927-08-09 1928-10-01 Escher Wyss Maschf Ag Pump system with electric motor drive and an auxiliary water turbine combined with the pump impeller to form a wheel body
US2238502A (en) * 1939-01-16 1941-04-15 Muir Neil Shaw Pumping apparatus
AU1449876A (en) * 1975-06-09 1977-12-08 Richards Of Rockford Inc Aerator
GB1525342A (en) * 1977-02-14 1978-09-20 Walton Bott A Motor-pump device and a method of lifting a liquid
US4230564A (en) * 1978-07-24 1980-10-28 Keefer Bowie Rotary reverse osmosis apparatus and method
US5876610A (en) * 1997-03-19 1999-03-02 Clack Corporation Method and apparatus for monitoring liquid flow through an enclosed stream
FR2822891B1 (en) * 2001-03-29 2003-11-28 Gilbert Collombier DEVICE SUPPLIED BY A FALL OF WATER AND RECOVERING THE ENERGY OF A PART OF THIS FLOW OF WATER TO INCREASE THE PRESSURE OF THE OTHER PART OF THIS FLOW
US7044718B1 (en) 2003-07-08 2006-05-16 The Regents Of The University Of California Radial-radial single rotor turbine
EP1577493A1 (en) * 2004-03-17 2005-09-21 Siemens Aktiengesellschaft Turbomachine and rotor for a turbomachine
EP1764487A1 (en) * 2005-09-19 2007-03-21 Solvay Fluor GmbH Working fluid for a OCR-process
US7828511B1 (en) * 2008-03-18 2010-11-09 Florida Turbine Technologies, Inc. Axial tip turbine driven pump
JP2011106302A (en) * 2009-11-13 2011-06-02 Mitsubishi Heavy Ind Ltd Engine waste heat recovery power-generating turbo system and reciprocating engine system including the same
DE202010017157U1 (en) * 2010-12-30 2011-03-17 Eckert, Frank Efficiency enhancement facilities for radial turbines in ORC plants
CH705171A1 (en) * 2011-06-21 2012-12-31 Alstom Technology Ltd The turbine blade having an airfoil from composite material and method for manufacturing thereof.
DE102011107829A1 (en) * 2011-07-01 2013-01-03 Voith Patent Gmbh Pump turbine plant
JP6213194B2 (en) * 2013-11-29 2017-10-18 セントラル硝子株式会社 Method for converting thermal energy into mechanical energy, organic Rankine cycle device, and method for replacing working fluid

Also Published As

Publication number Publication date
JP2020509296A (en) 2020-03-26
WO2018162175A1 (en) 2018-09-13
CN110382869B (en) 2021-09-03
CN110382869A (en) 2019-10-25
FR3063775A1 (en) 2018-09-14
FR3063775B1 (en) 2022-05-06
US20200072222A1 (en) 2020-03-05
EP3592977A1 (en) 2020-01-15
JP7080895B2 (en) 2022-06-06
US10895261B2 (en) 2021-01-19

Similar Documents

Publication Publication Date Title
US7948105B2 (en) Turboalternator with hydrodynamic bearings
EP2743463B1 (en) Apparatus and process for generation of energy by organic Rankine cycle
KR20060019503A (en) Power generation with a centrifugal compressor
US20130097994A1 (en) Multi-fluid turbine engine
US9228588B2 (en) Turbomachine component temperature control
EP3592977B1 (en) Application of a turbopump to a fluid circuit, particularly to a closed circuit particularly of the rankine cycle type
US9039349B2 (en) Turbocompressor and system for a supercritical-fluid cycle
CN109312657A (en) Turbocharger
EP3363101B1 (en) Device for thermal insulation between a turbine of which the wheel is rotated by a hot fluid and an electricity generator with a rotor coupled to said wheel, in particular for a turbine generator
EP3359794B1 (en) Device for lubricating a bearing accepting a rotary shaft of an element of a closed circuit operating on a rankine cycle and method using such a device
KR102348113B1 (en) Waste heat recovery expander apparatus and waste heat recovery system
FR3055149A1 (en) CLOSED CIRCUIT OPERATING ACCORDING TO A RANKINE CYCLE WITH A DEVICE FOR EMERGENCY STOP OF THE CIRCUIT AND METHOD USING SUCH A CIRCUIT
RU2716633C2 (en) Screw turbine
FR3070725B1 (en) KINETIC TURBOPOMPE WITH A DEVICE FOR VARIATION OF SPEED FOR A CLOSED CIRCUIT, IN PARTICULAR A RANKINE CYCLE TYPE, IN PARTICULAR FOR A MOTOR VEHICLE
WO2019115122A1 (en) Electrically powered turbopump assembly for a closed circuit, particularly of the rankine cycle type, comprising integrated cooling
FR2531745A1 (en) METHOD AND INSTALLATION WITH THERMODYNAMIC LOOP FOR ENERGY PRODUCTION
EP3610149B1 (en) Turbopump assembly for a closed circuit, particularly of the rankine cycle type, associated with an internal combustion engine, in particular for a motor vehicle
CN217481337U (en) Coaxial turbine pump and temperature difference energy power generation system
FR2531744A1 (en) Turbine with crossed blades.
JP7471164B2 (en) Turbines for cold energy generation
CN113719324A (en) Shaft turbine pump and temperature difference energy power generation system
WO2022189712A1 (en) Tri-generation turbomachine device and vehicle comprising such a device

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20191007

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20220530

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602018041937

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1525697

Country of ref document: AT

Kind code of ref document: T

Effective date: 20221115

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20221019

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1525697

Country of ref document: AT

Kind code of ref document: T

Effective date: 20221019

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230220

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230119

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230223

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230219

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230120

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20230227

Year of fee payment: 6

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602018041937

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

26N No opposition filed

Effective date: 20230720

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20230228

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20230212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230212

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230228

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221019

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230212

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230228