Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L9/00—Rigid pipes
  • F16L9/22—Pipes composed of a plurality of segments

Definitions

• the present invention relates to deep water pumping devices.
• the present invention relates to pipes, or risers, allowing the routing of water from great depths to the surface.
• the pipe must be able to allow the rise of a large volume of water, typically several tens or even hundreds of thousands of cubic meters per hour, from great depths, for example several hundred meters. This rise is carried out using pumping means located on the surface, for example pumps lowering the level of the water in the pipe relative to sea level, or else located deep in the pipe.
• Application WO 2019/097151 describes a pipe for pumping water from great depths, which has a greater length than the previous pipes, and which can be installed more easily.
• the present invention aims to solve the various technical problems mentioned above.
• the present invention aims to provide a device for pumping water from great depths, with a pipe having a significant length and high mechanical stability, and which can be installed more easily.
• a device for pumping water from great depths comprising a plurality of longitudinal elements assembled together to form a pipe inside which the pumped water circulates in great depth.
• Each longitudinal element comprises a wall, forming a section of said pipe, said wall being prestressed in tension, for example longitudinally and/or circumferentially, when the water is not pumped into the pipe.
• the wall may have a thickness less than or equal to 5 cm, preferably less than 3 cm, or even 1 cm. Preferably, the wall may have a thickness of between 3 and 4 mm.
• the pipe according to the present invention comprises a wall which is prestressed.
• the purpose of the prestressing is to limit the overall stresses that the wall will undergo when the pipe is going to be used to pump water.
• a depression is created inside it which causes stresses in the wall.
• the wall is designed to be prestressed before pumping the water into the pipe.
• the stresses created by the interior depression of the pipe which are centripetal stresses, will be balanced, in the material of the wall, by the prestress which is a centrifugal prestress.
• the stresses exerted in the material of the wall oppose each other to lead to a lower final stress, limiting the risks of deformation, or even crushing, of the wall.
• said prestressing for example radial or centrifugal, is chosen to be substantially greater than or equal, in amplitude, to the depression created inside to pump the water with the device, so as to balance the pressures exerted on the wall when water is pumped with the device.
• each longitudinal element comprises an individual frame, for example in the form of a crinoline, said wall being mounted on, and in particular inside, the frame.
• the purpose of the reinforcement is to provide a stable mechanical support, to create the prestress of the wall.
• the reinforcements are configured to connect together in a sealed manner
• said longitudinal elements for example, comprise end portions with sealing means configured to cooperate with the end portions of the adjacent reinforcements.
• the reinforcements can also be used to allow the assembly, in particular sealed, of the longitudinal elements together, and to allow the mounting of the longitudinal elements on an external supporting structure.
• the wall of each longitudinal element is prestressed with respect to the reinforcement.
• the reinforcement constituting a stable mechanical support for the longitudinal element, it can be used as a support to create centrifugal or radial prestressing in the wall.
• the device comprises circumferential pre-stressing means of the wall, for example turnbuckles, and/or longitudinal pre-stressing means of the wall, for example tie rods, said circumferential and/or longitudinal pre-stressing means being mounted between the reinforcement and the wall.
• the circumferential or longitudinal prestressing means are mounted between the reinforcement and the wall, and make it possible to exert a stress on the wall by resting on the reinforcement.
• the circumferential or longitudinal prestressing means will be mounted between the reinforcement and the wall, and will be configured to be able to reduce their length, so as to create a centrifugal or radial prestress. , or a longitudinal or axial prestress in the wall.
• the prestressing means preferably circumferential, comprise an elastic means, for example spring washers mounted in the turnbuckles, to allow deformation of the prestressed wall, when water is pumped with the device.
• an elastic means for example spring washers mounted in the turnbuckles, to allow deformation of the prestressed wall, when water is pumped with the device.
• the elastic means allows the prestressing means to deform under the effect of an external constraint: this in particular allows the wall to deform under the effect of the constraints linked to the internal depression of the pipe during pumping some water.
• the deformation of the wall during the establishment of the initial prestressing is not fixed, but can on the contrary change when the wall undergoes the stresses due to the difference in hydraulic pressure which come to balance the prestressing.
• the wall can regain its initial shape, or geometry or dimension, before the prestressing, when water is pumped with the device, thanks to the elastic means of the prestressing means.
• the elastic means allow, thanks to their deformation, the prestressed wall to deform under the effect of the stresses linked to the suction water when pumping. The pre-stress and the depression stresses compensating each other, the wall can then regain its initial shape, and undergo few mechanical stresses.
• the frame comprises at least two, preferably three, longitudinal means, for example bars, connecting the end portions of the frame together, and at least two, preferably four or more, means devices, for example cores, connecting the longitudinal means together.
• the armature is thus formed of bars and toroids forming like a cage surrounding, or surrounded by, the wall.
• the reinforcement makes it possible to provide a multitude of support points for the prestressing means, distributed over the periphery of the wall.
• the device also comprises a support structure, and the longitudinal elements are mounted individually in a fixed manner on the support structure, preferably by the upper or lower end of their frame.
• the device for pumping water from great depths comprises on the one hand a support structure, for example comprises at least, preferably three or more, cables, and on the other hand a plurality of longitudinal elements forming the pipe inside which circulates the water pumped from great depth.
• the longitudinal elements are individually mounted integrally on the supporting structure, preferably by their upper or lower end, and are interconnected by sealing means.
• the pipe is made from longitudinal elements secured individually to a supporting structure.
• the pipe is therefore no longer a one-piece pipe formed from a single piece, but is formed by the assembly, via sealing means, of a plurality of longitudinal elements.
• each longitudinal element is mounted integrally on the supporting structure, so that the sealing means have no mechanical function, which makes it possible to give them a longer service life and greater efficiency.
• such a structure is easier to install in particular, since it is possible to successively mount, for example in situ on the platform or on the boat, the various longitudinal elements on the supporting structure as and when it is submerged.
• the support structure comprises at least two, preferably three or more, cables, distributed over the periphery of the longitudinal elements.
• the support structure is formed here of several cables, for example steel, distributed over the periphery of the longitudinal elements.
• a support structure has the advantage of being flexible, and therefore of being able, for example, to be wound on a reel in order to facilitate its storage and transport, while having sufficient mechanical properties to support the weight of the various longitudinal elements.
• the cables of the supporting structure can be unwound and the longitudinal elements of the pipe be mounted therein as they go along.
• each longitudinal element comprises a fixing assembly making it possible to mount the individual reinforcement on the supporting structure.
• the pipe section is formed from an aluminum alloy, steel or even composite materials.
• Such a prestressed section of pipe makes it possible to guarantee the shape of the pipe, despite the pressure due to the difference in height of water created inside the pipe to pump the cold water. It is then possible to control the flow of water circulating in the pipe with the depression applied at the top of the pipe. In addition, a better mechanical strength of the pipe as a whole is also obtained, which can thus better withstand the various stresses exerted on it. Finally, with a rigid structure, the flow of water circulating in the pipe remains constant all along the pipe.
• the pipe section may comprise mechanical reinforcement means, for example one or more hoops mounted on an outer peripheral surface of the pipe section.
• the hoops make it possible to reduce the thickness of the pipe section, and therefore the weight of the pipe section, while still having the same mechanical properties thanks to the reinforcement of the hoops.
• the pipe section may comprise thermal insulation means, for example a nanoporous material placed on the inner or outer peripheral surface of the section.
• the fixing assembly is mounted on the individual frame by first pivot connections, preferably two diametrically opposed on the periphery of the individual frame.
• the pivot connections between the individual frame and the mounting assembly provide some flexibility in driving. Indeed, the supporting structure, formed of cables, can be deformed to a certain extent according to the stresses which it undergoes, whereas the longitudinal elements of the pipe are rigid.
• the pivot connections make it possible to provide a degree of freedom, albeit limited, at the level of the junctions between adjacent longitudinal elements. It is thus possible to obtain deviations between the axes of two adjacent individual reinforcements, which can be of the order of 5°, which remains small but which, given the number of longitudinal elements, can result in a significant curvature of the pipe. in general.
• Such freedom, even small makes it possible to better withstand, or even resist, certain of the stresses undergone by driving.
• the fixing assembly comprises a first peripheral element with means for fixing to the supporting structure, for example cable ties and optionally stiffeners.
• the fixing assembly also comprises a second peripheral element mounted between the individual frame and the first peripheral element, and mounted on the first peripheral element by second pivot links, preferably two diametrically opposed links, the second links pivot between the first peripheral element and the second peripheral element and the first pivot connections between the second peripheral element and the individual frame being distributed over the periphery of the longitudinal element.
• second pivot links preferably two diametrically opposed links
• two pivot axes of the individual frame are provided with respect to the support structure.
• a first axis is obtained by two pivot links mounted between the second peripheral element and the first peripheral element secured to the supporting structure, and a second axis, preferably perpendicular to the first, is obtained by two pivot links mounted between the individual frame and the second peripheral element.
• a degree of freedom is then obtained between two adjacent individual reinforcements which is greater and which allows orientation, albeit small, in any direction in space in order to respond to the external constraints which apply to the pipe.
• the individual armature comprises an upper end portion and a lower end portion, the diameter of the inner peripheral surface of the upper end portion is greater than the diameter of the outer peripheral surface of the upper end portion.
• lower end portion, the upper end portion extending, longitudinally, beyond the wall forming the pipe section so as to be able to surround the outer peripheral surface of the lower end portion of an adjacent longitudinal element in order to to form, with said outer peripheral surface of the lower end portion of the adjacent longitudinal element, two cylindrical bearing surfaces facing each other between which the sealing means are arranged.
• the interlocking between the two individual armatures is not done by force but on the contrary with a large clearance between the two facing surfaces.
• the two facing surfaces can then form bearing surfaces for the sealing means which are then easier to install.
• the sealing means comprise flexible strips and/or one or more water-inflatable seals and/or one or more bellows seals.
• the joints are provided to allow both a certain freedom of movement of the adjacent individual reinforcements between them, but also to resist the various pressures undergone as the depth is important.
• several types of seals can be combined in order to limit leaks between the inside and the outside of the pipe. In fact, such leaks would lead to the heating of the water conveyed inside the pipe and therefore to reduce the efficiency of the system.
• the device also comprises a ballast mounted at a lower end of the supporting structure.
• the ballast makes it possible to avoid raising the lower end of the pipe too much, in order to try to pump the water to the greatest depth, and therefore the coldest possible.
• the device also comprises a support on which the support structure is retained by an upper end.
• the support can be a platform or a boat, or a part of a platform or a boat.
• the support comprises means for driving the supporting structure, for example at least two, or even three or more winches, preferably without lateral offset.
• the support comprises at least one pump in fluid communication with the inside of the pipe and opening out to a determined distance below the water level in the pipe at rest, for example between 3 and 4 meters below the water level at rest.
• the pump makes it possible to circulate the water inside the entire pipe, by sucking in only the surface part.
• the device may comprise at least one pump mounted on a lower part of the pipe and/or of the supporting structure.
• the water is drawn inside the pipe by a pump located at the bottom thereof and which causes the circulation of cold water towards the inside and towards the top of the pipe.
• the pipe has a total length greater than or equal to 150 meters, preferably greater than or equal to 500 meters, preferably greater than or equal to 1000 meters, and an internal diameter greater than or equal to 1 meter, preferably greater than or equal to 2 meters, preferably greater than or equal to 4 meters.
• the pipe comprises a number of longitudinal elements greater than or equal to 10, preferably greater than or equal to 25, more preferably greater than or equal to 40.
• Figure 1 schematically shows a deep water pumping device according to the invention
• Figure 2 shows, in perspective, a longitudinal element according to the present invention
• FIG. 3 Figure 3 is a schematic representation in section of the upper end of the longitudinal element shown in Figure 2;
• Figure 4 is a schematic sectional representation of the fixing of a longitudinal element on the supporting structure and of its junction with the adjacent longitudinal element;
• FIG. 5 schematically represents a first example of circumferential prestressing means according to the present invention.
• FIG. 6 Figure 6 schematically shows a second example of circumferential prestressing means according to the present invention.
• FIG. 1 schematically illustrates a device 1 for pumping water at great depth according to the present invention.
• the device 1 comprises a support 2 on which is mounted a pipe 4 via a support structure 6.
• the pipe 4 is formed of a plurality of longitudinal elements 8 each comprising a pipe section, or wall, 10.
• the pipe 4 is therefore formed by assembling the different pipe sections 10 of the different longitudinal elements 8.
• the supporting structure 6 may comprise one or more cables 11, preferably three or even more cables 11, for example made of steel, distributed around the pipe 4.
• the use of cables makes it possible to have a supporting structure 6 which can be rolled up, for example on a reel, for its storage and its transport: one then obtains a supporting structure 6 which is compact and easy to handle, despite its length.
• each longitudinal element 8 comprises a section of pipe, or wall, 10, for example of cylindrical shape, an individual reinforcement 13 and a fixing assembly 12 arranged in the upper part of the individual reinforcement 13. Furthermore, in order to seal the pipe 4, the longitudinal elements 8 are interconnected by sealing means 14.
• the pipe section 10 is a rigid section, for example made of composite material, steel or aluminum alloy.
• the section 10 is made of steel in order to present a high mechanical strength for a low weight.
• the latter may comprise a thinner steel wall reinforced by one or more hoops 16 extending over the outer peripheral surface of the section 10 and distributed over the length of the section 10.
• one or more longitudinal elements for example those located on the side of the surface of the water, may also comprise a coating of thermally insulating material, for example of nanoporous material. The water pumped from a great depth can thus remain cold during its ascent along the pipe 4, which increases the efficiency of the thermodynamic cycle in which it is used.
• the fixing assembly 12 makes it possible to fix the longitudinal element 8, and more particularly the individual reinforcement 13, on the cables 11 of the supporting structure 6.
• the weight of the pipe 4 is carried regularly on the supporting structure 6, so as to avoid weight constraints between the various longitudinal elements 8 between them, and also allow, as described below, a certain mobility of the longitudinal elements 8 between them.
• the fixing assembly 12 comprises a first peripheral element 18 which is fixed to the supporting structure 6.
• the first peripheral element 18 can thus have an annular shape extending around the individual reinforcement 13, with fixing means to the carrier structure 6.
• the fixing means can for example be notches configured to cooperate with a cable clamp 20 so as to mount the first peripheral element 18 integrally on the cables 11 of the carrier structure 6 (see figure 4). More specifically, the notches may comprise a semi-cylindrical recess and the cable clamp 20 may also have a semi-cylindrical recess so that, when the cable clamp 20 is mounted in the notch, for example by screws 22, a cylindrical hole is obtained in which the cable 11 of the support structure 6 is clamped. The first peripheral element 18 is therefore mounted integrally with the supporting structure 6.
• Stiffeners 24 can also be provided on the first peripheral element 18, in the continuity of the fixing means 20, in order to limit the curvature of the cable 11 at the outlet of the fixing means 20.
• the stiffener 24 can be a slender element, for example in the form of a cone, one end of which is mounted on the first peripheral element 18 and the other end of which is in contact with the cable 11.
• the stiffener 24 can deform between its two ends, but less pronounced than the cable 11 of the support structure 6, in order to always leave the cable 11 a certain flexibility while limiting the curvature of the latter in the immediate vicinity of the fixing means. This limits any degradation of the cable 11.
• the fixing assembly 12 may also comprise a second peripheral element 26 mounted between the individual reinforcement 13 and the first peripheral element 18.
• the second peripheral element 26 may thus have the shape of a torus, for example hollow, extending around the individual armature 13.
• the second peripheral element 26 makes it possible to make the mechanical connection between the individual armature 13 and the first peripheral element 18, while allowing rotations of the individual armature 13 with respect to the first peripheral element 18 in any direction in space.
• the second peripheral element 26 comprises two first pivot links 28 mounted along a first pivot axis which is illustrated horizontally in Figure 3.
• the two first pivot links 28 are mounted between the individual frame 13 and the second peripheral element 26: they allow a degree of freedom in rotation of the individual frame 13 with respect to the second peripheral element 26 along the first pivot axis.
• the second peripheral element 26 also comprises two second pivot links 30 mounted along a second pivot axis which is illustrated vertically in Figure 3.
• the two second pivot links 30 are mounted between the second peripheral element 26 and the first peripheral element 18, with a second pivot axis which is perpendicular to the first axis of pivot while remaining in a plane substantially perpendicular to the general longitudinal direction of the pipe 4, that is to say in the plane of the first peripheral element 18.
• the second pivot connections make it possible to have a degree of freedom in rotation of the second peripheral element 26, and therefore of the individual armature 13, relative to the first peripheral element 18, along the second pivot axis.
• sealing means 14 are arranged between the pipe sections 10.
• the individual reinforcements 13 of the longitudinal elements 8 can comprise a portion of upper end 32 and a lower end portion 34, the upper end portion 32 having a diameter of an inner peripheral surface which is greater than the diameter of an outer peripheral surface of the lower end portion 34.
• upper end extends longitudinally beyond the pipe section 10 so as to be able to surround the outer peripheral surface of the lower end portion 34 of an adjacent longitudinal element 8 .
• the inner peripheral surface of the upper end portion 32 and the outer peripheral surface of the adjacent lower end portion 34 form two cylindrical surfaces facing each other between which seals can be mounted, for example flexible slats.
• the flexible slats make it possible to limit the circulation of water between the inside and the outside of the pipe 4, while allowing the two adjacent individual reinforcements 13 to have a certain degree of freedom in rotation with respect to each other. 'other.
• the reinforcement individual 13 of the upper longitudinal element 8 is not force-fitted in the upper end portion 32 of the lower longitudinal element 8.
• a pipe 4 is thus obtained which can be particularly long, while having a fixed diameter thanks to the rigid pipe sections 10.
• the device 1 also comprises a ballast 40.
• the ballast 40 has the general shape of a hollow cylinder.
• the hollow cylinder is closed at its lower end and open at its upper end so as to be able to place more or fewer ballast elements therein depending on the configuration of the device.
• the ballast 40 is mounted on the device 1 thanks to the cables 11 of the support structure 6 which are fixed to the upper end of the hollow cylinder. The ballast therefore makes it possible to stretch the support structure 6 in order to pump the water to the greatest possible depth.
• the lower end of the ballast 40 may also have a thinner thickness, in order to facilitate the flow of cold water towards the inside of the pipe 4.
• the device 1 also comprises a pipe head 42.
• the pipe head 42 allows the connection between the pipe 4 and the support 2 in which the cold water is pumped.
• the pipe head thus comprises a pipe section 10 and a fixing assembly 12 which is not necessarily arranged at one of the ends of the section 10 but which makes it possible to fix the section 10 to the supporting structure 6 like the sections of the longitudinal elements 8.
• the driving head 42 also comprises a pumping zone 44 which can be in the form of a hollow cylinder, the internal diameter of which corresponds to the external diameter of the fixing assembly 12 of the driving head 42
• the fixing assembly 12 is positioned in a sealed manner in the pumping zone 44, in order to prevent the water surrounding the pipe head 42, from infiltrating into the pumping zone 44.
• the pumping zone 44 extends above the upper end of the section 10 and above the level of the water at rest. This prevents water does not enter the pumping zone 44 from above, for example under the effect of the swell.
• the pumping zone 44 also comprises a connecting opening with pumping means 46.
• the connecting opening is arranged above the fixing assembly 12 and below the level of the water at rest. The distance between the connecting opening and the sea level defines the maximum difference in height AH that can be obtained when pumping the water leaving the pipe 4 in the pumping zone 44.
• the pipe 4, with its ballast 40 and its pipe head 44, are mounted on the support 2 which supports the carrier structure 6. More specifically, the cables 11 of the carrier structure 6 are unwound from reels 48 arranged on the support 2 and driven by winches 50, in particular vertical winches without lateral offset, up to a deflection pulley 52. Such winches are known and in particular marketed by the company Imeca.
• winches 50 without lateral offset make it possible to use downstream deflection pulleys 52 which are fixed on the support, and which can therefore lower the supporting structure 6 from the same point. Such a configuration notably facilitates the installation of the pipe 4 as described below.
• the longitudinal elements 8 can also include means for prestressing the pipe section 10. Such prestressing means are therefore intended to create, in the pipe section 10, an initial centrifugal stress which will be compensated, during operation, with the centripetal stress created by the internal suction of the pipe 4.
• the individual reinforcement 13 of the longitudinal elements 8 comprises various means intended to serve as a support for the prestressing means.
• the individual reinforcement 13 can thus comprise longitudinal means 54, for example cylindrical tubes, extending between the upper end portion 32 and the lower end portion 34 of the individual reinforcement 13.
• the longitudinal means 54 are preferably uniformly distributed around the periphery of the pipe section 10, and can be three, four, five or even six in number.
• the longitudinal means 54 make it possible to maintain fixed and stable the distance between the lower end portion 34 and the upper end portion 32 of the individual frame 13.
• the longitudinal means 54 can also serve as a support for peripheral supports and /or prestressing means.
• the individual armature 13 may also comprise peripheral means 56, for example in the form of toroids, extending around the pipe section 10, in planes parallel to those of the end portions 32, 34.
• the peripheral means 56 are in particular mounted on the longitudinal means 54, for example cross the longitudinal means 54, to surround the pipe section 10.
• the peripheral means 56 are preferably uniformly distributed between the lower end portion 34 and the lower end portion upper end 32 of the individual reinforcement 13, and can be two, three, four or even five in number. Peripheral means 56 serve as a support for prestressing means.
• the individual reinforcement 13 with its longitudinal 54 and peripheral 56 means form a kind of cylindrical cage, or crinoline, surrounding the pipe section 10 and on which it is then possible to mount prestressing means for pre - constrain the section of pipe 10.
• the longitudinal element 8 can comprise circumferential prestressing means 58, and longitudinal prestressing means 60 (see FIG. 4).
• the longitudinal prestressing means 60 make it possible to create a tensile stress which extends along the axial direction of the pipe section 10.
• the longitudinal prestressing means 60 therefore make it possible to stretch the pipe section 10 in the direction of its length.
• the pipe section 10 may already comprise, at a first end, for example at the upper end, a peripheral collar 62 intended to rest on a shoulder 64 of one of the portions of end of the individual armature 13, for example of the upper end portion 32.
• the peripheral collar 62 thus makes it possible to block the pipe section 10 on the end portion of the individual armature 13, and prevents the section from pipe 10 to slide inside the individual reinforcement 13.
• the pipe section 10 is also mounted, by its second end opposite the first end, to the other end portion of the individual reinforcement 13, for example at the lower end portion 34, by a longitudinal prestressing means 60 making it possible to adjust the distance between the end of the pipe section 10 and the end portion of the individual reinforcement 13.
• the longitudinal prestressing means 60 can thus be a tie rod in engagement, on one side, in a thread of the pipe section 10 and, on the other side, with a bolt positioned in abutment on the end portion of the individual reinforcement 13.
• a tie rod in engagement, on one side, in a thread of the pipe section 10 and, on the other side, with a bolt positioned in abutment on the end portion of the individual reinforcement 13.
• circumferential prestressing means 58 make it possible to create a tensile stress which extends along the centrifugal or radial direction of the pipe section 10.
• the circumferential prestressing means 58 therefore make it possible to stretch the pipe section 10 circumferentially.
• circumferential prestressing means 58 are mounted, by a first end, on the peripheral means 56 of the individual reinforcement 13, and, by a second end opposite the first end, on the pipe section 10.
• the circumferential prestressing means 58 are also distributed around the periphery of the pipe section 10.
• the circumferential prestressing means 58 make it possible to adjust the distance between the peripheral surface of the pipe section 10 and the peripheral means 56 of the armature individual 13.
• FIGS 5 and 6 illustrate two embodiments of a peripheral prestressing means 58 made in the form of a turnbuckle.
• the peripheral prestressing means 58 thus comprise a body in two parts: a first part 66 secured to the pipe section 10, and a second part 68 secured to the peripheral means 56.
• An elastic means 70 such as spring washers, is positioned between the two parts 66, 68 of the body of the peripheral prestressing means 58, in order to be able to modify the spacing between the two parts 66, 68 of the body according to the amplitude of the forces exerted between the two parts 66, 68 of the body.
• the peripheral prestressing means 58 may comprise a means of attachment to the pipe section 10 having a determined minimum area of contact with the pipe section 10.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)
• Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=74669109

Family Applications (1)

Country Status (3)

Family Cites Families (3)

• 2020
  • 2020-12-22 FR FR2013959A patent/FR3118116B1/fr active Active
• 2021
  • 2021-12-14 WO PCT/EP2021/085610 patent/WO2022136015A1/fr unknown
  • 2021-12-14 EP EP21839416.1A patent/EP4267874A1/de active Pending

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