EP4115077A1 - Strömungsleitsystem für eine strömungskraftanlage, verfahren zur leitung einer fluidströmung mit dem strömungsleitsystem auf eine strömungskraftanlage - Google Patents
Strömungsleitsystem für eine strömungskraftanlage, verfahren zur leitung einer fluidströmung mit dem strömungsleitsystem auf eine strömungskraftanlageInfo
- Publication number
- EP4115077A1 EP4115077A1 EP21715134.9A EP21715134A EP4115077A1 EP 4115077 A1 EP4115077 A1 EP 4115077A1 EP 21715134 A EP21715134 A EP 21715134A EP 4115077 A1 EP4115077 A1 EP 4115077A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow
- rotor
- guide
- control system
- guide surface
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 123
- 238000000034 method Methods 0.000 title claims description 10
- 238000005259 measurement Methods 0.000 claims description 4
- 238000011156 evaluation Methods 0.000 claims description 2
- 238000013459 approach Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/005—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor the axis being vertical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/04—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor having stationary wind-guiding means, e.g. with shrouds or channels
- F03D3/0436—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor having stationary wind-guiding means, e.g. with shrouds or channels for shielding one side of the rotor
- F03D3/0445—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor having stationary wind-guiding means, e.g. with shrouds or channels for shielding one side of the rotor the shield being fixed with respect to the wind motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/40—Use of a multiplicity of similar components
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
Definitions
- the invention relates to a flow control system for guiding a fluid flow flowing along an inflow direction to a flow power plant with at least one left rotor with a left rotor axis oriented transversely to the inflow direction and preferably at least one right rotor arranged transversely to the inflow direction and to the left rotor axis next to the left rotor with a right rotor axis aligned along the left rotor axis.
- the flow control system is designed to deflect a portion of the fluid flow directed towards the inside (s) of the rotor or rotors onto the outside (s) of the rotor or rotors.
- the flow control system comprises at least one left guide surface aligned along the left rotor axis for directing the fluid flow to the outside of the left rotor and preferably at least one right guide surface arranged transversely to the direction of flow and the rotor axes next to the left guide surface for directing the fluid flow to the outside of the right rotor.
- the document EP 1 859 164 B1 discloses a device for utilizing wind energy, which has at least one guide surface which directs the wind for directing the wind flow onto a rotor converting the flow energy, so that the rotor, whose axis of rotation is arranged transversely to the direction of flow, is acted upon by the flow.
- the document WO 2011/098957 A1 discloses a wind generator with a vertical axis and a rotor on which a plurality of radial blades are mounted.
- a stator arranged around the rotor includes guide elements that direct the wind in and out of the rotor.
- the document DE 102014007206 A1 discloses a wind power plant with at least two essentially vertically arranged rotors.
- an inflow flow can be deflected by air guide surfaces of the rotor blades of the rotors running against the inflow flow.
- the document DE 102013 101 977 A1 describes a wind power plant with two rotors rotatable about a vertical axis and a flow control system arranged in front of it in the direction of flow for guiding the wind to the outer sides of the rotors.
- the flow control system comprises two guide surfaces, each of which comprises two guide elements.
- the guide elements are arranged to be rotatable relative to a guide element frame and displaceable relative to one another.
- the document DE 103 31 682 A1 discloses a wind power plant with at least one rotor with a vertical axis of rotation, which comprises a number of rotor blades distributed circumferentially at equal intervals around a free flow space in the area of the axis of rotation.
- a guide surface construction partially enclosing the rotor comprises a lateral flow inlet which is delimited by two guide surfaces, of which the guide surface located upstream with respect to the direction of rotation of the rotor has a concavely curved horizontal cross section, and a flow outlet which is opposite the flow inlet.
- the object of the invention is to provide a high-performance and low-maintenance flow control system for more efficient and, in particular at high flow speeds, operationally reliable use of the flow energy by a flow power plant with rotors with a rotor axis oriented transversely to the direction of flow, in particular by so-called “vertical flow power plants” create.
- the subject matter of the present invention provides a flow control system according to claim 1 and claim 2, each of which solves the technical problem.
- the object is also achieved by a flow power plant according to claim 12 and a method for guiding a fluid flow with the flow control system according to claim 13.
- Advantageous refinements result from the dependent claims.
- a flow control system is used to direct a fluid flow flowing along an inflow direction to a flow power plant with at least one left rotor with a left rotor axis oriented transversely to the inflow direction and preferably at least one right rotor arranged transversely to the inflow direction and to the left rotor axis next to the left rotor a right rotor axis aligned along the left rotor axis.
- the fluid flow can for example comprise a wind flow or a water flow. If the direction of flow is horizontal, for example, the rotor axes are preferably aligned vertically.
- the flow power plant can in particular comprise a so-called “vertical wind power plant”, for example according to the publication DE 102014007206 A1.
- the “direction of flow” refers to the direction in which the fluid flow flows towards the flow power plant before it is deflected by the flow control system.
- the term “along” is used synonymously with “essentially parallel” in the context of the invention.
- the term “transversely” is used synonymously with “essentially orthogonal” in the context of the invention. These terms should not be understood as restricting to an exact parallelism or orthogonality in the mathematical sense, but also include slight deviations of, for example, 0 ° to 20 °, in particular 0 ° to 10 °, in particular 0 ° to 5 °, from the parallelism or Orthogonality a.
- horizontal and vertical within the meaning of the invention each include slight deviations of, for example, 0 ° to 20 °, in particular 0 ° to 10 °, in particular 0 ° to 5 °, from an exact horizontality or verticality.
- the flow control system is designed to deflect a portion of the fluid flow directed towards an inside of the left rotor running counter to the flow direction to an outside of the left rotor running with the flow direction.
- the flow control system is designed to deflect a central portion of the fluid flow directed towards the inner sides of the rotors facing one another onto the outer sides of the rotors facing away from one another.
- the insides of the rotors are shielded from the fluid flow, so that the rotor blades of the rotors on the insides can run against the direction of flow without being braked by the fluid flow.
- the left rotor and the right rotor are thus efficiently driven in opposite directions to each other.
- the flow control system and the rotors can be rotatably mounted, for example as described in DE 102014 007206 A1, in order to be able to align the flow power plant to the direction of flow.
- the flow control system comprises at least one left guide surface for directing the fluid flow to the outside of the left rotor and preferably at least one right guide surface arranged transversely to the direction of flow and the rotor axes next to the left guide surface for directing the fluid flow to the outside of the right rotor.
- the right guide surface is preferably arranged horizontally next to the left guide surface transversely to the flow direction.
- the features and advantages described also relate to an embodiment without a right-hand guide surface for a flow power plant without a right-hand rotor.
- the terms “rotors”, “rotor axes” and / or “guide surfaces” used in the plural below can be replaced according to the invention by the respective singular.
- the flow control system comprises two guide element frames, each carrying a plurality of, for example two, three, four or more guide elements, the guide elements of a guide element frame interacting as a left guide surface and as a right guide surface.
- the at least one guide element frame can for example be designed as a frame around an axis that is essentially parallel to the rotor axes, in particular vertical, convexly or concavely towards the direction of flow and / or designed essentially rectangular.
- a convex or concave curvature allows a particularly low-loss deflection of the fluid flow.
- the guide elements cooperate as a guide surface when they are designed to guide the fluid flow to the outside of the rotor associated with the guide surface.
- the guide elements together to form a closed guide surface.
- the guide elements are each to adjust at least one angle of attack of the guide elements relative to the direction of flow around an element axis of rotation aligned along the rotor axes, for example 45 ° to 315 °, in particular 90 ° to 270 °, preferably 180 °, rotatable with the Connected guide element frame, and the element axes of rotation of the guide elements are spaced from one another along the guide surface transversely to the rotor axes with at least one guide element distance.
- the guide element spacing between adjacent element axes of rotation can be identical for all guide elements or different from one another.
- the guide element spacing can be selected to be so large that an opening remains between adjacent guide elements at every angle of attack.
- the guide element spacing is preferably less than or equal to a length of the guide elements along the guide surface transversely to the rotor axes, so that an opening between adjacent guide elements can be closed by a suitable setting of their angle of attack, the adjacent ones Guide elements can in particular overlap one another, for example can overlap over at least a quarter, a third or a half of the length of the guide elements.
- the element axes of rotation are preferably aligned vertically and horizontally spaced from one another along the guide surface.
- openings are provided between the individual guide elements so that fluid that has been transported by the rotors on their inside in the direction of flow behind the guide surfaces can exit through the openings. This prevents overpressure from building up behind the guide surfaces, which could hinder the movement of the rotors.
- the fluid can be sucked out of the area behind the guide surfaces through the openings of fluid flowing past in front of the guide surfaces like a water jet pump, so that a negative pressure arises behind the guide surfaces, which additionally drives the rotors.
- the pressure differences caused by the guide surfaces preferably result in flow vortices around the rotor axes, in particular within the rotors, from which kinetic energy can be withdrawn by additionally driving the rotors.
- the opening areas of the openings between the guide elements and the angle of incidence of the guide elements relative to the direction of flow can be set so that optimal pressure and pressure for efficient drive of the rotors Flow conditions are created behind the guide elements.
- the guide elements can be rotated at a high flow velocity of the fluid flow into a passage configuration in which the fluid flow can pass the guide surfaces with little flow resistance, so that the flow guide system is not damaged by too high a wind load acting on it.
- the guide elements can even generate a lift that counteracts the wind load.
- the rotatable guide elements therefore enable particularly safe operation.
- the guide elements are preferably rotatable about their element axes of rotation independently of one another.
- the guide elements are preferably connected to the at least one guide element frame in a displaceable manner transversely to the rotor axes in order to adjust the at least one guide element spacing along the guide surface.
- the element axes of rotation are preferably connected to the at least one guide element frame in a horizontally displaceable manner along the guide surface.
- the displaceable connection for example via a rail system, advantageously allows an opening area of openings between the guide elements to be set independently of the angle of incidence of the guide elements with respect to the direction of flow.
- the left guide surface and the right guide surface preferably enclose an opening angle of, for example, 0 ° to 180 °, in particular 45 ° to 135 °, preferably 60 ° to 120 °, preferably at least in a plane oriented transversely to the rotor axes a guide element frame of the left guide surface and / or the right guide surface for setting the opening angle is rotatably mounted on a bearing device about an axis of rotation aligned along the rotor axes relative to the rotors.
- the opening angle is preferably in a horizontal plane, and the axis of rotation is preferably oriented vertically.
- the term “opening angle” denotes twice the angle of attack between the guide surface and the direction of flow. This means that when the guide surface is aligned along the direction of flow, the angle of attack and the opening angle are each 0 °, and when the guide surface is oriented transversely to the direction of flow, the angle of attack is 90 ° and the angle of opening is 180 °.
- the size of the portion of the rotors can advantageously be adjusted which is shielded by the guide surfaces from direct flow by the fluid flow in the flow direction, so that the rotors are driven more or less strongly.
- a rotation frequency of the rotors can be set to a value that is optimal for efficient power generation.
- the rotors can be completely shielded at a sufficiently large opening angle, for example to stop them for maintenance purposes or to protect them from excessive flow rates.
- the at least one guide element frame of the left guide surface and / or the right guide surface is preferably mounted on a bearing device along the flow direction relative to the associated rotor to adjust a guide surface distance of the respective guide surface from the associated rotor.
- the at least one guide element frame of the left guide surface and / or the right guide surface for setting the inlet width is mounted on a bearing device transversely to the direction of flow and to the rotor axes relative to the rotors.
- the entry gap is preferably between the guide surface and a flow obstacle for the fluid flow, for example a building wall, a building roof, a subsurface of the flow power plant and / or, which is arranged transversely to the direction of flow and to the rotor axis next to the guide surface a water bed of a body of water in which the flow power plant is arranged.
- a flow obstacle for the fluid flow for example a building wall, a building roof, a subsurface of the flow power plant and / or, which is arranged transversely to the direction of flow and to the rotor axis next to the guide surface a water bed of a body of water in which the flow power plant is arranged.
- the inlet width is preferably transverse to the flow direction in a horizontal plane, and the left guide surface and / or right guide surface is preferably mounted horizontally relative to the rotors transversely to the flow direction.
- a variable portion of the fluid flow can reach the inside of the rotors through the entry gap with an adjustable width, for example in order to optimally adjust their rotation frequency.
- the entry gap is preferably at least partially, in particular completely, covered by a slat, the slat being spaced apart from the guide surfaces by a slat spacing against the direction of flow.
- the slat is preferably displaceable by an adjusting device for adjusting the slat spacing along the direction of flow relative to the guide surfaces, so that optimal pressure and flow conditions can advantageously be set behind the guide surfaces for an efficient drive of the rotors.
- the slat preferably has, in a sectional plane oriented transversely to the rotor axes, a profile which is curved about an axis oriented along the rotor axes and which can in particular be configured like a slat of a wing of an aircraft.
- the cutting plane is preferably aligned horizontally and the profile is preferably bent about a vertical axis.
- the flow control system preferably comprises at least one motorized drive device, preferably with an overload protection, for setting and preferably for locking the at least one angle of attack of the guide elements, the at least one guide element distance of the guide elements, the guide surface distance of at least one guide surface from the associated rotor, the opening angle of the Guide surfaces, the entry width of the entry gap between the guide surfaces and / or the slat spacing of the slat from the guide surfaces.
- the aforementioned variables can be set in a simple manner, in particular in an automated manner.
- the drive device preferably allows passive locking without absorbing energy, for example by means of a mechanical lock and / or a locking mechanism. This minimizes the energy consumption of the drive device.
- the overload protection which can for example comprise a slip clutch and / or a locking body clutch, advantageously prevents a Damage to the flow control system, for example due to an excessively high flow velocity of the fluid flow.
- the flow control system preferably comprises at least one sensor system for measuring the fluid flow and at least one control device communicatively connected to the sensor system and the at least one drive device for the automatic evaluation of measurement data of the sensor system and for the automatic control of the at least one drive device depending on the measurement data.
- the sensor system preferably comprises at least one sensor for measuring a flow velocity and / or flow direction of the fluid flow.
- the control device preferably comprises a computer device that can be arranged, for example, locally in the flow control system and / or remotely therefrom.
- the computer device can include, for example, a computer system (embedded PC) embedded in the flow control system and / or a network server.
- a computer system embedded PC
- network server embedded PC
- the flow control system can be automatically adapted to the fluid flow in order to ensure an efficient drive of the rotors at all times, even with changing flow conditions.
- the flow control system preferably comprises a plurality of guide surfaces arranged one above the other along the rotor axes, in particular vertically, the opening angles between guide surfaces arranged next to one another transversely to the direction of flow, the entry widths of the inlet gap between guide surfaces arranged next to one another crosswise to the direction of flow and / or the slat spacing of the slat of guide surfaces arranged next to one another transversely to the direction of flow for the guide surfaces arranged one above the other are preferably adjustable independently of one another.
- the individual guide surfaces can be made smaller and lighter and thus easier to produce, assemble and hold.
- a flow velocity of a fluid flow along the rotor axes is often not homogeneous, but depends, for example, on a vertical height above a floor. With a plurality of guide surfaces arranged one above the other, even with a non-homogeneous flow velocity ideal pressure and flow conditions for an efficient drive of the rotors can be set everywhere.
- the flow control system preferably comprises a plurality of guide elements arranged one above the other along the rotor axes, in particular vertically, the setting angles and / or the guide element spacings of the guide elements arranged one above the other preferably being adjustable independently of one another.
- the guide elements In a sectional plane oriented transversely to the rotor axes, the guide elements have an airfoil profile with a profile nose oriented counter to the fluid flow, a profile top side of the airfoil profile facing away from the fluid flow flowing along the direction of flow.
- the cutting plane In the case of a horizontal flow direction, the cutting plane is preferably oriented horizontally.
- the fluid flow is deflected, compressed and intensified particularly efficiently, in particular without turbulence, and the fluid flowing past the guide elements can generate a vacuum behind the guide surfaces on the inside of the rotors in the direction of flow behind the guide surfaces on the inside of the rotors , in particular by generating flow vortices around the rotor axes, preferably within the rotors, additionally drives.
- two flow vortices running in opposite directions can arise, which can mutually reinforce one another.
- the invention relates to a flow power plant for generating energy from a fluid flow flowing along an inflow direction with at least one left rotor with a left rotor axis oriented transversely to the inflow direction and preferably at least one right rotor with a right rotor arranged transversely to the inflow direction and to the left rotor axis next to the left rotor right rotor axis aligned along the left rotor axis.
- the flow power plant can in particular have one or more of the features of the wind power plant described in DE 102014 007206 A1.
- the flow power plant comprises a flow control system according to the invention for deflecting a portion of the fluid flow directed towards the inside (s) of the rotor or rotors to the outside (s) of the rotor or rotors, wherein the at least one left guide surface of the flow control system is arranged to direct the fluid flow to the outside of the left rotor, and preferably the at least one right guide surface of the flow control system is arranged to guide the fluid flow to the outside of the right rotor.
- the invention relates to a method for guiding a fluid flow flowing along an inflow direction with a flow control system according to the invention to a flow power plant with at least one left rotor with a left rotor axis oriented transversely to the inflow direction and preferably at least one transverse to the inflow direction and to the left rotor axis next to the left Rotor arranged right rotor with an aligned along the left rotor axis right rotor axis.
- the flow power plant can in particular have one or more of the features of the wind power plant described in DE 102014007206 A1.
- the flow control system is used according to the invention to deflect a portion of the fluid flow directed towards the inside (s) of the rotor or rotors to the outside (s) of the rotor or rotors, the at least one left guide surface of the flow control system for directing the fluid flow is used on the outside of the left rotor, and wherein preferably the at least one right guide surface of the flow control system is used to guide the fluid flow to the outside of the right rotor.
- the method according to the invention preferably comprises setting a rotation frequency of the rotor or rotors with the flow control system, in particular by setting the at least one angle of incidence of the guide elements, the at least one guide element distance of the guide elements, the guide surface distance of at least one guide surface from the associated rotor, the The opening angle of the guide surfaces, the entry width of the entry gap between the guide surfaces and / or the slat spacing of the slat from the guide surfaces.
- the method according to the invention preferably comprises compressing and / or intensifying the fluid flow through the flow control system on the outside of the rotor or on the outside of the rotors.
- the method according to the invention preferably comprises generating a negative pressure between the at least one guide surface and the rotor or rotors by means of the flow control system.
- the method according to the invention preferably comprises generating at least one flow vortex driving the rotor or the rotors by the flow control system.
- the aforementioned configurations bring about a particularly efficient use of the energy of the fluid flow to drive the rotor or rotors.
- the present invention relates in particular to a controllable flow control system for increasing the efficiency of energy systems with a vertical rotor axis (wind or water power systems).
- energy systems with two counter-rotating, vertical-axis rotors as they are also known from the document DE 10 2014007206 A1.
- the flow control system consists essentially of a plurality of controllable, aerodynamically shaped guide elements (or profiles) arranged next to one another and one above the other within a guide element frame (or frame), which is also controllable.
- the angular position of the individual profiles and the frame is dependent on the individual flow conditions (in particular on the flow velocity) on site.
- One goal is to increase the efficiency and competitiveness of energy systems with a vertical rotor axis compared to conventional systems.
- the flow is preferably not only optimally deflected onto the side of the rotor or rotors running with the flow, but also compressed and reinforced as required, which also leads to an increase in efficiency.
- the flow vortices known from fluid mechanics can be generated around the rotor axis (s) through the pressure differences generated by the flow control system and through the movement of the rotor or rotors.
- the kinetic energy of these flow vortices can then also be used and continue to drive the rotor or rotors, which once again leads to an increase in efficiency.
- a speed of the rotor or rotors can be set to a value that is optimal for efficient power generation, largely independently of the flow speed of the fluid flow impinging on the flow control system.
- the guide elements can be rotated into a passage configuration in which the fluid flow can pass the guide surfaces with little flow resistance, so that the flow control system, in particular a mast carrying the flow control system, is not too high the wind load acting on it is damaged.
- the guide elements can even generate a lift that counteracts the wind load.
- the rotatable guide elements therefore enable particularly safe operation of the flow control system and a flow power plant equipped with it.
- FIG. 1 shows a schematic cross section of a flow power plant according to the invention with a flow control system according to the invention.
- FIG. 2 shows a further schematic cross section of the flow power plant from FIG. 1 with a fluid flow driving the flow power plant.
- FIG. 3 shows a schematic cross section of a further flow power plant according to the invention with a flow control system according to the invention with a slat.
- FIG. 4 shows a further schematic cross section of the flow power plant from FIG. 1 in a flow-through configuration.
- FIG. 5 shows a further schematic cross section of the flow power plant from FIG. 1 in a braking configuration.
- FIG. 6 shows a schematic cross section of a further flow power plant according to the invention with only one rotor and with a flow control system according to the invention.
- FIG. 7 shows a perspective, schematic representation of a further flow power plant according to the invention with a flow control system according to the invention with several guide surfaces arranged one above the other.
- FIG. 1 shows a schematic cross section of a flow power plant 200 according to the invention with a flow control system 100 according to the invention.
- the flow power plant 200 is designed to generate energy from a fluid flow, in particular wind, flowing along an, for example, horizontal, flow direction A, and comprises a left rotor 210 with a left rotor axis 211 oriented transversely to flow direction A, in particular vertically, and a left rotor axis 211 transverse to Inflow direction A and to the left rotor axis 211 next to the left rotor 210 right rotor 220 with a right rotor axis 221 aligned along the left rotor axis 211.
- the flow control system 100 and the rotors 210, 220 can be rotatably mounted on a central carrier 230 around the central carrier 230 in order to be able to align the flow power plant 200 to the direction of flow A.
- a rotatable mounting is described in detail, for example, in the document DE 102014007206 A1.
- the flow control system 100 is used to deflect a central portion of the rotors 210, 220 which is directed towards the inner sides 201 of the rotors 210, 220 which face one another Fluid flow designed on the outer sides 202 of the rotors 210, 220 facing away from one another.
- the flow control system 100 comprises a left guide surface 110 for directing the fluid flow to the outside 202 of the left rotor 210 and a right guide surface 120 for the conduit, which is arranged transversely to the direction of flow A and the rotor axes 211, 212, in particular horizontally, next to the left guide surface 110 of fluid flow onto the outside 202 of the right rotor 220.
- the flow control system 100 comprises a plurality of guide elements 140, each of which interacts as one of the guide surfaces 110, 120, and in each case a guide element frame 130 carrying the guide elements 140, which can comprise, for example, a substantially rectangular frame.
- the flow control system 100 comprises, for example, two guide element frames 130, each of which carries a plurality of, for example three, guide elements 140, the guide elements 140 each of a guide element frame 130 interacting as a left guide surface 110 and a right guide surface 120.
- the guide surfaces 110, 120 are, for example, each spaced apart from the associated rotor 210, 220 by a guide element spacing d, which for both guide surfaces 110, 120 can be identical or different from one another.
- At least one guide element 140 of at least one guide surface 110, 120, in particular each guide element 140 can have an airfoil profile with a profile nose 142 aligned against the fluid flow in a section plane aligned transversely to the rotor axes 211, 221, in particular horizontal, with a profile top side 143 of the airfoil profile is preferably facing away from the fluid flow flowing in along the direction of flow A.
- the guide elements 140 are each connected to the guide element frame 130 so as to be able to rotate about an, in particular vertical, element rotation axis aligned along the rotor axes 211, 221 in order to set an angle of incidence ⁇ of the guide elements 140 with respect to the direction of flow A.
- FIG. 1 shows only the angle of incidence ⁇ of a guide element 140.
- the remaining guide elements 140 can be aligned with the same setting angle a or with setting angles a that are different from one another.
- the guide elements 140 can be aligned, for example, with an angle of incidence ⁇ that increases in the direction of flow.
- the element axes of rotation 141 of the guide elements 140 are spaced apart from one another by a guide element spacing a along the guide surface 110 120 transversely to the rotor axes 211, 221, in particular horizontally.
- only one guide element spacing a is shown in FIG.
- the distances between the element axes of rotation 141 of the remaining guide elements 140 can be identical to or different from the guide element distance a shown.
- the left guide surface 110 and the right guide surface 120 enclose an opening angle ⁇ , which is preferably variable, for example from 45 ° to 135 °, in a plane oriented transversely to the rotor axes 211, 221, in particular a horizontal plane.
- the one guide element frame 130 of the left guide surface 110 and / or the right guide surface 120 is preferably for setting the opening angle ⁇ on a bearing device (not shown) about an axis of rotation aligned along the rotor axes 211, 221, in particular vertically, relative to the rotors 210 , 220 rotatably mounted.
- an inlet gap 116 for the fluid flow with an inlet width oriented transversely to the direction of flow A and to the rotor axes 211, 221, for example horizontally, can be arranged.
- FIG. 2 shows a further schematic cross section of the flow power plant 200 from FIG. 1.
- a central part of the fluid flow directed towards the mutually facing inner sides 201 of the rotors 210, 220 is directed and compressed by the guide surfaces 110, 120 onto the outer sides 202 of the rotors 210, 220 facing away from one another.
- the resulting negative pressure in the intermediate space 240 ensures that further fluid flows from the inner sides 201 of the rotors 210, 220 into the intermediate space 240 and additionally drives the rotors 210, 220.
- flow vortices running in opposite directions to one another can occur around the rotor axes 211,
- FIG. 3 shows a schematic cross section of a further flow power plant 200 according to the invention with a flow control system 100 according to the invention.
- the flow control system 100 shown in Figure 3 differs from the flow control system 100 shown in Figure 1 in that the inlet gap 116 between the left guide surface 110 and the right guide surface 120 is at least partially, in particular completely, covered by a slat 117, wherein the slat 117 is spaced apart from the guide surfaces 110, 120 against the direction of flow A by a slat spacing, so that between the slat 117 and the guide surfaces 110, 120 fluid from the space 240 between guide surfaces 110,
- the slat 117 preferably has, in a section plane oriented transversely to the rotor axes 211, 221, in particular horizontal, a profile curved around an axis, especially vertical, oriented along the rotor axes 211, 221, in particular a slat profile known from wing construction.
- FIG. 4 shows a further schematic cross section of the flow power plant 200 from FIG. 1 in a flow configuration of the flow control system 100, with the fluid flow and the rotation of the rotors 210, 220 being outlined by arrows as in FIG.
- the guide elements 140 in FIG. 4 have a smaller angle of incidence ⁇ to the direction of flow A of the fluid flow. This can be a part of the fluid flow between the guide elements 140 and through the space 240 between guide surfaces 110, 120 and rotors 210, 220 reach the inner sides 201 of the rotors 210, 220 directly, whereby the rotors 210, 220 are driven less strongly than in the one in Figure 2 position of the guide elements 140 shown.
- a less powerful drive of the rotors 210, 220 can be advantageous, for example, if a flow velocity of the fluid flow is so high that the position of the guide elements 140 shown in FIG Overload of a generator driven by the rotors could lead.
- FIG. 5 shows a further schematic cross section of the flow power plant 200 from FIG. 1 in a braking configuration of the flow control system 100, wherein, as in FIG. 2, the fluid flow and the rotation of the rotors 210, 220 are outlined by arrows.
- the guide elements 140 in FIG. 5 have an even smaller, in particular negative, angle of incidence ⁇ to the direction of flow A of the fluid flow.
- a larger part of the fluid flow between the guide elements 140 and through the space 240 between guide surfaces 110, 120 and rotors 210, 220 is directed directly to the inner sides 201 of the rotors 210, 220, whereby the rotors 210, 220, in particular to a standstill , can be braked.
- Such a braking of the rotors 210, 220 can be advantageous, for example, to protect the rotors 210, 220 from damage caused by an excessively high flow velocity of the fluid flow and / or for maintenance work.
- FIG. 6 shows a schematic cross section of a further flow power plant 200 according to the invention with a flow control system 100 according to the invention for guiding a fluid flow flowing along a flow direction A onto the flow power plant 200.
- the flow power plant comprises a left rotor 210 with a left rotor axis 211 oriented transversely to the direction of flow A, but, in contrast to the flow power plant 200 shown in FIG. 1, no right rotor.
- the flow control system 100 is designed to deflect a portion of the fluid flow directed towards an inside 201 of the left rotor 210 running against the direction of flow A onto an outside 202 of the left rotor 210 running with the direction of flow.
- the flow control system 100 comprises a left guide surface 110 for guiding the fluid flow onto the outside 202 of the left rotor 210.
- a right guide surface and a right rotor for example a flow obstacle 250, in particular a building wall, is arranged transversely to the direction of flow A and to the left rotor axis 211 next to the left guide surface 110 and the left rotor 210, in particular horizontally next to it.
- an entry gap 116 for the fluid flow with an entry width oriented transversely to the direction of flow A and to the left rotor axis 211, for example horizontally, can be arranged.
- the left guide surface 110 can be constructed essentially exactly like the left guide surface 110 of the flow control system 100 from FIG Direction of flow A can be too curved.
- the fluid flow flowing past the sides of the guide elements 140 facing the direction of flow A sucks through the openings between the guide elements 140, in particular supported by an airfoil profile in FIG Guide elements 140, fluid out of the space 240 between the left guide surface 110, the left rotor 210 and the flow obstacle 250.
- the resulting negative pressure in the intermediate space 240 ensures that further fluid flows in from the inside 201 of the left rotor 210 into the intermediate space 240 and additionally drives the left rotor 210.
- a flow vortex can arise around the left rotor axis 211, which can transmit additional kinetic energy to the rotor 210.
- FIG. 7 shows a perspective, schematic representation of a further flow power plant 200 according to the invention with a flow control system 100 according to the invention.
- the flow power plant 200 and the flow control system 100 can essentially be constructed as shown in FIG.
- the flow power plant 200 can each comprise a plurality of, for example two, left rotors 210 and right rotors 220 arranged one above the other along the rotor axes 221, 222.
- the flow control system 100 can comprise a plurality of, for example two, left guide surfaces 110 and right guide surfaces 120 arranged one above the other along the rotor axes 221, 222.
- the opening angles between guide surfaces 110, 120 arranged next to one another transversely to the direction of flow and / or the angles of incidence of the guide elements 140 arranged one above the other for the guide surfaces 110, 120 arranged one above the other can be set independently of one another.
- the flow control system 100 can advantageously be set to flow conditions that are variable along the rotor axis 221, 222.
- the fluid flow can be stronger in a region of the flow power plant 200 that is further away from a subsurface of the flow power plant 200 than in the vicinity of the subsurface.
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- Sustainable Energy (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020105698.2A DE102020105698B3 (de) | 2020-03-03 | 2020-03-03 | Strömungsleitsystem für eine Strömungskraftanlage, Verfahren zur Leitung einer Fluidströmung mit dem Strömungsleitsystem auf eine Strömungskraftanlage |
| PCT/EP2021/055373 WO2021175941A1 (de) | 2020-03-03 | 2021-03-03 | Strömungsleitsystem für eine strömungskraftanlage, verfahren zur leitung einer fluidströmung mit dem strömungsleitsystem auf eine strömungskraftanlage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4115077A1 true EP4115077A1 (de) | 2023-01-11 |
Family
ID=75277957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21715134.9A Pending EP4115077A1 (de) | 2020-03-03 | 2021-03-03 | Strömungsleitsystem für eine strömungskraftanlage, verfahren zur leitung einer fluidströmung mit dem strömungsleitsystem auf eine strömungskraftanlage |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4115077A1 (de) |
| DE (1) | DE102020105698B3 (de) |
| WO (1) | WO2021175941A1 (de) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10331682A1 (de) | 2003-07-14 | 2005-02-10 | Gehrke, Dieter | Windkraftanlage |
| DE102005060818A1 (de) | 2005-03-15 | 2006-09-21 | Kelaiditis, Konstantin, Dr.-Ing. | Verfahren und Vorrichtung zur Nutzung der Windenergie |
| US8057159B2 (en) * | 2008-01-17 | 2011-11-15 | Chong Wun C | Twin wind turbine power system |
| ITGE20100015A1 (it) | 2010-02-09 | 2011-08-10 | Alberto Ticconi | Aerogeneratore verticale con deflettori statici e dinamici |
| WO2013120250A1 (zh) * | 2012-02-14 | 2013-08-22 | Chen Hungchi | 风能动力装置 |
| FR2991005B1 (fr) * | 2012-05-22 | 2018-06-01 | Centre National De La Recherche Scientifique | Eolienne flottante a turbines a flux transverse a regulation aerodynamique |
| DE102013101977A1 (de) | 2013-02-28 | 2014-08-28 | Dennis Patrick Steel | Turbinensystem für Windkraft mit zwei Radialturbinen und einem veränderlichen nasenförmigen Windverteiler |
| DE102014007206B4 (de) | 2014-05-19 | 2017-11-02 | Vitali Geiger | Windkraftanlage mit im wesentlichen vertikalen Rotoren |
| WO2016060636A1 (ru) * | 2014-10-13 | 2016-04-21 | Геннадий АДАМОВЫЧ | Энергетическая система управления локальными атмосферными потоками (варианты) |
| DE102016105409B4 (de) | 2016-03-23 | 2018-11-15 | Twe - Tandem Wind Energy Gmbh | Windkraftanlage und Verfahren zum Steuern einer Windkraftanlage |
-
2020
- 2020-03-03 DE DE102020105698.2A patent/DE102020105698B3/de active Active
-
2021
- 2021-03-03 EP EP21715134.9A patent/EP4115077A1/de active Pending
- 2021-03-03 WO PCT/EP2021/055373 patent/WO2021175941A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021175941A1 (de) | 2021-09-10 |
| DE102020105698B3 (de) | 2021-07-29 |
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