Turbocurrent generator

Abstract

A turbine current generator (1) of the type including a stator and a rotor includes: a hollow support column (2) which can be engaged within a pipe or conduit for conveying fluid, particularly a fluid conveying conduit originating from drilling or exploration in an oil field; a hollow rotating column (3) which is rotatably and coaxially engaged within the hollow support column (2) and defines a corresponding conveying cylindrical chamber (4) for fluid, the hollow support column (2) and the hollow rotating column (3) defining at least a cylindrical gap (5); one or more magnetic or electromagnetic components (6) operable The hollow rotating column (3) is engaged with the hollow support column (2) and / or the hollow rotating column (3) to generate at least one current during the rotation of the hollow rotating column (3) within the hollow support column (2); one or more impellers (7) are arranged in the conveying cylindrical chamber (4) of the hollow rotating column according to their positions aligned along the longitudinal axis (X) of the hollow rotating column (3), the impellers (7) being engaged within the hollow rotating column (3) so as to rotate integrally with the hollow rotating column under the action of the fluid flowing through the hollow rotating column (3) and acting on each impeller (7).

Description

Technical Field

[0001] This invention relates to a turbine current generator. Background Technology

[0002] This invention relates to the field of extracting energy from moving fluids to power measurement systems, sensors, and / or similar electrical / electronic devices, either directly or via a storage system.

[0003] Therefore, the present invention is suitable for use in the petroleum industry, particularly in the exploitation and exploration of oil fields, and also suitable for use in any other field where fluid movement is conceived, such as, for example, in elevated canals or in fluid distribution systems that may also be under pressure.

[0004] It is well known that various processes and devices exist for recovering electrical energy from commonly used sources in the environment. One example of such a device can be found in turbines and / or impellers used to convert the kinetic energy of a moving fluid into electrical energy.

[0005] A current generator is known from document CN201902238U, which provides an impeller submerged in a fluid flowing inside a pipe.

[0006] Reference CN107575334 describes a current generator housed outside a pipe from which fluid flows, extracting energy to be converted into electrical energy. Each current generator is equipped with one or more impellers located within a reference pipe immersed in the flowing fluid. Each impeller is connected to a corresponding current generator by means of a shaft passing through the pipe from the inside out.

[0007] Document US2014117669 also describes and illustrates different solutions for current generators, in which the main body and some components are housed outside a reference pipe, while the associated impellers are arranged inside the pipe to be driven by the fluid flowing in the pipe. Again, in this case, the shaft of each impeller passes through the associated pipe from the inside out.

[0008] Similarly, an impeller for a current generator is known from document CN201874727U. The impeller is arranged inside a pipe through which fluid passes, and the pipe is provided with a shaft passing through the pipe from the inside to the outside.

[0009] Reference GB201218534 describes a current generator that provides one or more impellers arranged in series inside a pipe in which fluid flows. Components for converting kinetic / mechanical energy into electrical energy are also arranged inside or integrated into the pipe. In fact, some of the basic components of the current generator are mounted on the rotor of the impeller, while other components are arranged on the corresponding stators, which enclose the impellers inside the corresponding pipe.

[0010] Although known current generators offer various solutions for converting the kinetic / mechanical energy of fluid moving within a pipe into electrical energy, the applicant has found that these current generators are not without drawbacks and can be improved in various aspects, primarily concerning the use of current generators in situations where fluids are pumped at high pressures (approximately 700 bar) and high temperatures (approximately 200°C) (flowing within conduits and pipes with reduced cross-sections (not exceeding 20 mm), the overall sealing of conduits and pipes at the point where the current generator is installed, the overall dimensions of conduits and pipes at the point where the current generator is installed, and the overall dimensions of the current generator.

[0011] Specifically, the applicant found that known current generators are not well-suited for operation in environments characterized by high pressure and high temperature, such as those where people must work normally during oil field extraction and exploration.

[0012] In fact, all known solutions with the current generator located outside the pipe and its corresponding impeller arranged inside the pipe suffer from severe sealing problems at the intersection of the drive shaft in the pipe wall, which is especially serious under high pressure.

[0013] Furthermore, these current generators are particularly bulky because they require a suitable transmission mechanism between the impeller and the main impeller components located outside the pipe, which also increases the overall size of the pipe. Summary of the Invention

[0014] The main objective of this invention is to provide a current generator that can solve the problems encountered in the prior art.

[0015] Another object of the present invention is to provide a current generator that is suitable for effective operation even under high voltage (e.g., about 700 bar) and high temperature (e.g., about 200°C).

[0016] Another object of the present invention is to provide a compact current generator that can be housed inside a pipe, even a small pipe, for example, a pipe with a cross-section of no more than 20 mm.

[0017] Another object of the present invention is to provide a current generator that can ensure the overall dimensions of the pipe to which it is assembled.

[0018] These specific and further objectives are substantially achieved by a turbine current generator, as expressed and described in the embodiments of this application below.

[0019] For example, a description of a preferred, but not unique, embodiment of the turbine current generator according to the present invention will now be reported. Attached Figure Description

[0020] The following description will refer to the accompanying drawings, which are for illustrative purposes only and are therefore not limiting, wherein:

[0021] Figure 1 is a front view of the turbine current generator according to the present invention;

[0022] Figure 2 is a cross-sectional view of the turbine current generator taken along plane II-II of Figure 1;

[0023] Figure 3 is another front view of the turbine current generator in Figures 1 and 2;

[0024] Figure 4 is a cross-sectional view of the turbine current generator taken along plane IV-IV of Figure 3;

[0025] Figure 5 is a schematic perspective view of a flexible layered structure used to support the multiple windings present in the generators of Figures 1 to 4.

[0026] Figure 6 is a schematic cross-sectional view of the flexible layered structure of Figure 5, shown relative to the hollow support column of the generator in Figures 1 to 4, to form the stator of the generator;

[0027] Figures 7 to 11 This is a schematic view of a portion of the flexible layered structure, in which a series of conductive traces of the generator windings shown in Figures 1 to 4 can be seen. Detailed Implementation

[0028] Referring to the accompanying drawings, the number 1 generally indicates a turbine current generator according to the present invention.

[0029] Turbine current generators are types that include both a stator and a rotor.

[0030] In detail, the current generator 1 includes a hollow support column 2, which can be engaged within a pipe or conduit for conveying fluid (not shown, as this is known), particularly a pressurized fluid conveying conduit originating from drilling and / or exploration in an oil field.

[0031] The current generator 1 also includes a hollow rotating cylinder 3, which is rotatably and coaxially engaged within a hollow support cylinder 2 and defines a corresponding delivery cylindrical chamber 4 for fluid.

[0032] As shown in Figures 2 and 4, the hollow support column 2 and the hollow rotating column 3 at least partially define at least one cylindrical gap 5, which is formed between the hollow support column 2 and the hollow rotating column 3.

[0033] The electric generator 1 further includes a magnetic or electromagnetic component 6 operatively engaged with the hollow support column 2 and / or the hollow rotating column 3 to generate at least an electric current during the rotation of the hollow rotating column 3 within the hollow support column 2.

[0034] Referring again to Figures 2 and 4, the current generator 1 is provided with at least one impeller 7, which is arranged in the conveying cylindrical chamber 4 of the hollow rotating cylinder 3 along a position aligned with the longitudinal axis X of the hollow rotating cylinder 3.

[0035] According to the embodiments shown in Figures 2 and 4, the current generator 1 is provided with a plurality of impellers 7, which are arranged in the conveying cylindrical chamber 4 of the hollow rotating cylinder 3 along a position aligned with the longitudinal axis X of the hollow rotating cylinder 3.

[0036] Advantageously, the impeller 7 is engaged within the hollow rotating cylinder 3 so as to rotate integrally with the hollow rotating cylinder under the action of a fluid that flows through the conveying cylindrical chamber 4 of the hollow rotating cylinder 3 and acts on each impeller 7.

[0037] In detail, each impeller 7 is fixed to the inner surface 3a of the hollow rotating cylinder 3 by a corresponding peripheral portion 7a so as to rotate the hollow cylinder 3 when the impeller rotates due to the flow of fluid in the conveying cylindrical chamber 4.

[0038] Referring again to Figures 2 and 4, the turbine current generator 1 includes at least one flow rectifier 8 arranged in the conveying cylindrical chamber 4 of the hollow rotating cylinder 3. Preferably, it includes multiple flow rectifiers 8 arranged in the conveying cylindrical chamber 4 of the hollow rotating cylinder 3.

[0039] The impeller 7 and rectifier 8 are arranged alternately so that they alternate along the longitudinal extension direction of the hollow rotating cylinder 3.

[0040] The turbine current generator 1 further includes a static support shaft 9 that extends axially within the delivery cylindrical chamber 4 of the hollow rotating cylinder 3.

[0041] The impeller 7 is rotatably coupled to the static support shaft 9 so that it can rotate integrally with the hollow rotating column 3 about the longitudinal axis X of the hollow rotating column.

[0042] Alternatively, each flow rectifier 8 is fixed to a static support shaft 9, such that each flow rectifier, together with the static support shaft, remains stationary relative to the impeller 7 and the hollow rotating cylinder 3.

[0043] As shown in Figures 2 and 4, the static support shaft 9 is connected to the first support handle 10 and the second support handle 11 at its ends 9a and 9b, respectively. The first support handle and the second support handle define the inlet 4a and outlet 4b of the conveying cylindrical chamber 4 of the hollow rotating cylinder 3.

[0044] Specifically, each support handle 10, 11 includes a generally cylindrical body 10a, 11a, in which a plurality of support members 10b, 11b extend radially and converge in a central circular seat 10c, 11c, into which the relevant ends 9a, 9b of the static support shaft 9 are inserted.

[0045] The support members 10b and 11b of the first support handle 10 and the second support handle 11 are interleaved with the corresponding conveying openings 10d and 11d (Figure 4). The advancing fluid freely enters the conveying cylindrical chamber 4 through the conveying openings and exits from the conveying cylindrical chamber.

[0046] As shown in Figures 2 and 4, the turbine current generator 1 includes a first bearing 12 operatively located between a first support shank 11, a hollow support column 2, and a hollow rotating column 3, and a second bearing 13 operatively located between the second support shank 11, the hollow support column 2, and the hollow rotating column 3. Bearings 12 and 13 are of a type designed to ensure insulation of the cylindrical gap 5 relative to the delivery cylindrical chamber 4 of the hollow rotating column 3, the bearings partially defining the cylindrical gap 5.

[0047] Specifically referring to the aforementioned magnetic or electromagnetic component 6, the first magnetic or electromagnetic component 6a, preferably multiple first magnetic or electromagnetic components 6a, are bonded to, for example, by adhesive bonding within the cylindrical gap 5, and are particularly fixed to the inner surface 2a of the hollow support column 2.

[0048] According to Figure 5 to Figure 11 In the preferred embodiment of the invention shown, the first magnetic component or the first ferromagnetic component 6a includes a plurality of windings 6c (FIGs 5, 7 and 8), each winding having a generally flat structure.

[0049] In detail, each winding 6c includes a series of conductive traces 6d that define a layered and flexible printed circuit.

[0050] Advantageously, the conductive traces 6d of each winding 6c extend substantially parallel to each other, with generally orthogonal connection portions 6e.

[0051] In addition, the conductive traces 6d of each winding 6c extend in a concentrated manner on at least two superimposed planes or layers.

[0052] Preferably, the conductive traces 6d of each winding 6c are incorporated in or supported by the flexible layered structure 16, which may also be cylindrical or semi-cylindrical in shape.

[0053] Advantageously, the flexible layered structure 16 supporting the conductive trace 6d of the winding 6c can be constructed using a winding or coiling structure with overlapping structural portions (Figures 5 and 6). In this way, the flexible layered structure has high mechanical strength under pressure and significantly simplifies the assembly steps of the electric generator 1.

[0054] In order to insulate the winding 6c, especially at the overlapping part of the structure, at least one insulating varnish is appropriately applied to the conductive trace 6d of the winding 6c, and thus at least one insulating varnish is applied to both sides of the flexible layered structure 16.

[0055] According to a preferred configuration of the invention, the conductive traces 6d of each winding 6c are grouped on a corresponding structural sector 16a of the flexible layered structure 16, each of the corresponding structural sectors having a generally rectangular shape.

[0056] like Figure 7 and Figure 8 As can be seen, the structural sectors 16a of the flexible layered structure 16 are arranged side by side along the corresponding long side 16b.

[0057] According to this embodiment, each winding 6c extends from one of the sides (preferably the long side 16b) of a corresponding structural sector 16a of the flexible layered structure 16, the winding extending from the periphery 16c of the structural sector toward the central region 16d of the structural sector, generally parallel to the corresponding periphery of the structural sector 16a.

[0058] At the central region 16d of the corresponding structural sector 16a of the flexible layered structure 16, the corresponding winding 6c extends from one plane or one layer to another plane or another layer, in which the winding extends from the central region 16d of the corresponding structural sector 16a to the periphery 16c of the corresponding structural sector 16a, approximately parallel to the periphery of the corresponding structural sector 16a.

[0059] like Figure 7 and Figure 8As can be seen, the windings 6c of each structural sector 16a of the flexible layered structure 16 are connected in series or in parallel with each other through the corresponding connecting bridges 6f.

[0060] Refer to Figure 5 and Figure 7-11 The flexible layered structure 16 includes at least one generally flat electrical connection attachment 16e, and one or more electrical connection traces 6g extending along the electrical connection attachment for connecting the winding 6c to at least another component of the electric generator 1.

[0061] According to a preferred solution of the invention, the flexible layered structure 16 includes at least one film made of an insulating material, for example, a polyimide that is stable in a temperature range between -269°C and 400°C.

[0062] The flexible layered structure 16 also has two copper layers, one on the top and one on the bottom.

[0063] According to a preferred solution of the present invention, the polyimide layer has a thickness of not less than 17 μm, while each of the two copper layers has a thickness of not less than 25 μm.

[0064] The thinnest flexible layered structure 16 has a thickness of not less than 0.067 mm.

[0065] Advantageously, the flexible layered structure 16 is positioned in the columnar gap 5 along the winding or coiling structure (Figures 5 and 6) and is preferably fixed to the inner surface 2a of the hollow support column 2 by gluing.

[0066] Alternatively, two or more flexible layered structures 16 with different circumferences can be provided, the flexible layered structures being fixed, with the widest flexible layered structure fixed against the inner surface 2a of the hollow support column 2, and the narrowest flexible layered structure fixed against the widest flexible layered structure.

[0067] Advantageously, the hollow support column 2 of the stator of the generator 1, which together with the flexible layered structure 16, is made of a ferromagnetic material that is suitable for processing or sintering into a simple shape with a low saturation level compared to the main magnet, such as some iron-based and nickel-based magnetic metal alloys or metal alloys with high permeability.

[0068] Alternatively, the hollow support column 2 can also be made of plastic material to limit iron loss when the turbine's productivity is particularly low.

[0069] The second magnetic component or the second electromagnetic component 6b engages with the hollow rotating cylinder 3 so as to face the cylindrical gap 5 at the first magnetic component or the first electromagnetic component 6a.

[0070] According to a preferred solution of the present invention, the second magnetic component or the second ferromagnetic component 6b includes a plurality of permanent magnets, which are preferably fixed to the outer surface 3b of the hollow rotating cylinder 3 by adhesive bonding.

[0071] Each permanent magnet has a generally parallelepiped shape, preferably with a rectangular base and is housed in a corresponding seat obtained on the outer surface 3b of the hollow rotating cylinder 3.

[0072] Each permanent magnet is advantageously divided into multiple parts along its longitudinal or axial extension direction in order to reduce losses due to eddy currents.

[0073] Preferably, the permanent magnet is made of a material with a low thermal coefficient, such as samarium cobalt, for example.

[0074] To ensure the positioning of the permanent magnet on the hollow rotating cylinder 3 even during high rotational speeds, a hoop or housing structure with a cylindrical outer surface (not shown in the figures) can be provided.

[0075] Alternatively, in order to give the permanent magnet an integral cylindrical surface without structural discontinuities, a resin or similar material that enables the hollow rotating cylinder 3 and the permanent magnet assembly to have a continuous cylindrical outer surface can be applied, thereby minimizing any resistance to rotor rotation from any fluid present in the gap 5.

[0076] The hollow rotating cylinder 3 acts as a flow guide for magnetic flow, supported by a permanent magnet.

[0077] Advantageously, the hollow rotating cylinder 2 is made of a ferromagnetic material that can withstand mechanical loads and the erosion of chemical reagents.

[0078] Preferably, the hollow rotating cylinder 2 is made of a ferromagnetic material with a relative permeability greater than 100, so as to provide sufficient flow path for the permanent magnet contained therein and achieve a low magnetomotive force drop.

[0079] In detail, the hollow rotating cylinder 2 is made of stainless steel or, for example, a nickel alloy, a material that allows for appropriate trade-offs between thickness and magnetic saturation levels and suitable mechanical properties.

[0080] Regarding the arrangement of the first magnetic component 6a and the second magnetic component 6b, it should be considered that, for the purposes of this invention, it is not excluded that, in any way, permanent magnets are applied to the inner surface 2a of the hollow support column 2 and the windings are arranged on the hollow rotating column 3, or that corresponding windings are applied to the hollow support column 2 and the hollow rotating column 3.

[0081] According to an advantageous aspect of the invention, the cylindrical gap 5 is hermetically insulated relative to the conveying cylindrical chamber 4 of the hollow rotating cylinder 3 and is at least partially occupied by a dielectric fluid (preferably dielectric oil).

[0082] As shown in Figures 2 and 4, the cylindrical gap 5 includes at least one connecting channel 14, which has a first connecting port 14a converging in the cylindrical gap 5 and a second connecting port 14b converging in the delivery chamber 4 at the outlet 4b and the second support handle 11.

[0083] In detail, the cylindrical gap 5 is provided with a plurality of connection channels 14, each of which has a first connection port 14a and a second connection port 14b.

[0084] Pressure compensation device 15 is operatively arranged in each connection channel 14.

[0085] Specifically, each compensation device 15 includes at least one compensation chamber 15a, which is in fluid communication with a corresponding connection channel 14 between a first connection port 14a and a second connection port 14b, and the at least one compensation chamber is operatively occupied by at least one compensation piston 15b.

[0086] Each compensation device 15 is designed to reduce the overall volume of the column gap 5 as the pressure in the conveying column chamber 4 of the hollow rotating column 3 increases.

[0087] In this way, each compensation device 15 maintains a constant pressure difference between the cylindrical gap 5 and the conveying cylindrical chamber 4 of the hollow rotating cylinder 3, which is preferably between -1 bar and +1 bar, or even more preferably approximately equal to 0 bar.

[0088] The current generator according to the present invention solves the problems observed in the known art and achieves important advantages.

[0089] First, the aforementioned current generator is suitable for effective operation even under high pressure (e.g., about 700 bar) and high temperature (e.g., about 200°C).

[0090] Furthermore, the structural design of the aforementioned turbine current generator significantly reduces the overall size of the generator itself, making it very compact.

[0091] Finally, it should be considered that the structural design of the aforementioned generator allows it to be applied inside the intended pipes and / or conduits, thereby avoiding any sealing problems that would normally arise due to mechanical bodies and / or transmissions passing through these pipes.

Claims

1. A turbine current generator (1) comprising a stator and a rotor, the current generator (1) comprising: Hollow support column (2), which can be joined inside a pipe or conduit for conveying fluid, A hollow rotating column (3) is rotatably and coaxially engaged within the hollow support column (2) and defines a corresponding cylindrical chamber (4) for conveying fluid, the hollow support column (2) and the hollow rotating column (3) defining a cylindrical gap (5). One or more magnetic or electromagnetic components (6) are operatively engaged with the hollow support column (2) and / or the hollow rotating column (3) to generate an electric current during rotation of the hollow rotating column (3) within the hollow support column (2); At least one impeller (7) is arranged in the conveying cylindrical chamber (4) of the hollow rotating cylinder (3) along a position aligned with the longitudinal axis (X) of the hollow rotating cylinder (3). The impeller (7) engages within the hollow rotating cylinder (3) so as to rotate integrally with the hollow rotating cylinder under the action of a fluid flowing through the hollow rotating cylinder (3) and acting on each impeller (7). The cylindrical gap (5) is at least partially occupied by a dielectric fluid, and the cylindrical gap (5) is hermetically insulated relative to the conveying cylindrical chamber (4) of the hollow rotating cylinder (3). The cylindrical gap (5) includes at least one connecting channel (14) communicating with the conveying cylindrical chamber (4) of the hollow rotating cylinder (3), and at least one pressure compensation device (15) is operably arranged in the connecting channel (14) to reduce the overall volume of the cylindrical gap (5) when the pressure in the conveying cylindrical chamber (4) of the hollow rotating cylinder (3) increases.

2. The turbine current generator (1) according to claim 1, wherein, The pressure compensation device (15) of the cylindrical gap (5) maintains the pressure difference between the cylindrical gap and the conveying cylindrical chamber (4) of the hollow rotating column (3) basically constant, and the pressure difference is between -1 bar and 1 bar.

3. The turbine current generator (1) according to claim 2, wherein, The compensation device includes: At least one compensation chamber (15a) is in fluid communication with the connecting channel (14) of the cylindrical gap (5); At least one compensation piston (15b) is operably arranged within the compensation chamber (15a) to change the overall volume of the cylindrical gap (5).

4. The turbine current generator (1) according to claim 1, wherein, A first magnetic component or a first electromagnetic component (6a) engages within the cylindrical gap (5) to the inner surface (2a) of the hollow support column (2), and a second magnetic component or a second electromagnetic component (6b) engages with the hollow rotating column (3) to face the cylindrical gap (5) at the location of the first magnetic component or the first electromagnetic component (6a).

5. The turbine current generator (1) according to claim 4, wherein, The first magnetic component or the first electromagnetic component (6a) includes a plurality of windings (6c), each winding having a generally flat structure.

6. The turbine current generator (1) according to claim 5, wherein, Each winding (6c) of the first magnetic component or the first electromagnetic component (6a) includes a series of conductive traces (6d) defining a layered and flexible printed circuit. The conductive traces (6d) of each winding (6c) extend generally parallel to each other, and each winding (6c) has a connection portion (6e) that is generally orthogonal to the conductive traces (6d).

7. The turbine current generator (1) according to claim 6, wherein, The conductive trace (6d) of each winding (6c) extends over at least two superimposed planes or layers.

8. The turbine current generator (1) according to claim 7, wherein, The conductive traces (6d) of each winding (6c) are incorporated in or supported by a flexible layered structure (16) that can switch between a flat construction and a cylindrical or semi-cylindrical construction.

9. The turbine current generator (1) according to claim 8, wherein, The flexible layered structure (16) supporting the conductive trace (6d) of the winding (6c) has a winding or coiling structure with superimposed structural portions.

10. The turbine current generator (1) according to claim 8, wherein, The conductive traces (6d) of each winding (6c) are grouped on the corresponding structural sector (16a) of the flexible layered structure (16), each of the corresponding structural sectors having a generally rectangular shape, and the structural sectors (16a) of the flexible layered structure (16) are arranged side by side along the corresponding long side (16b).

11. The turbine current generator (1) according to claim 10, wherein, Each winding (6c) extends from one of the sides of the corresponding structural sector (16a) of the flexible layered structure (16), and each winding (6c) extends generally parallel to the periphery of the corresponding structural sector (16a) from the outer periphery (16c) of the corresponding structural sector toward the central region (16d) of the corresponding structural sector. Correspondingly, the corresponding winding (6c) extends from one plane or layer to another plane or layer, in which the corresponding winding extends generally parallel to the periphery of the corresponding structural sector (16a) from the central region (16d) of the corresponding structural sector (16a) to the outer periphery (16c) of the corresponding structural sector (16a).

12. The turbine current generator (1) according to claim 11, wherein, The windings (6c) of each structural sector (16a) of the flexible layered structure (16) are electrically connected in series or in parallel through corresponding connecting bridges (6f).

13. The turbine current generator (1) according to claim 8, wherein, The flexible layered structure (16) includes at least one generally flat electrical connection accessory (16e) for connecting the winding (6c) to at least another component of the turbine current generator (1), with one or more electrical connection traces (6g) extending along the electrical connection accessory.

14. The turbine current generator (1) according to any one of claims 4 to 13, wherein, The second magnetic component or the second electromagnetic component (6b) includes a plurality of permanent magnets, which are glued to the outer surface (3b) of the hollow rotating cylinder (3).

15. The turbine current generator (1) according to claim 14, wherein, Each permanent magnet has a generally parallelepiped shape, each permanent magnet has a rectangular base and is housed in a corresponding seat obtained on the outer surface (3b) of the hollow rotating cylinder (3), and each permanent magnet is divided into multiple parts along its longitudinal or axial extension direction.

16. The turbine current generator (1) according to claim 1, the turbine current generator comprising a plurality of impellers (7) arranged in a delivery cylindrical chamber (4) of the hollow rotating cylinder (3) along a position aligned with the longitudinal axis (X) of the hollow rotating cylinder (3), the impellers (7) engaging within the hollow rotating cylinder (3) so as to rotate integrally with the hollow rotating cylinder under the action of a fluid, the fluid flowing through the hollow rotating cylinder (3) and acting on each impeller (7).

17. The turbine current generator (1) according to claim 16, the turbine current generator further comprising a plurality of flow rectifiers (8) arranged in the delivery cylindrical chamber (4) of the hollow rotating cylinder (3), the impeller (7) and the rectifiers (8) being arranged alternately along the longitudinal extension direction of the hollow rotating cylinder (3).

18. The turbine current generator (1) according to claim 17, the turbine current generator further comprising at least one static support shaft (9) extending axially within the delivery cylindrical chamber (4) of the hollow rotating cylinder (3), the impeller (7) being rotatably engaged on the static support shaft (9) so as to rotate integrally with the hollow rotating cylinder (3) about the longitudinal axis (X) of the hollow rotating cylinder.

19. The turbine current generator (1) according to claim 18, wherein, Each flow rectifier (8) is fixed on the static support shaft (9) such that each flow rectifier and the static support shaft remain stationary when the impeller (7) and the hollow rotating column (3) rotate.

20. The turbine current generator (1) according to claim 18 or 19, wherein, The static support shaft (9) is engaged at its ends (9a, 9b) with the first and second support handles (10, 11), which define the inlet (4a) and outlet (4b) of the delivery cylindrical chamber (4) of the hollow rotating cylinder (3), respectively.

21. The turbine current generator (1) according to claim 20, further comprising: The first bearing (12) is operatively located between the first support handle (10), the hollow support column (2) and the hollow rotating column (3); The second bearing (13), which is operatively located between the second support handle (11), the hollow support column (2) and the hollow rotating column (3), the first bearing (12) and the second bearing (13) ensure the insulation of the cylindrical gap (5) relative to the conveying cylindrical chamber (4) of the hollow rotating column (3).

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