Fluid power generation device

Abstract

The application provides a fluid power generation device, which comprises a magnetic ring, a first magnetic ring and a second magnetic ring being concentrically arranged, and the magnetic poles of the first end of the first magnetic ring and the first end of the second magnetic ring being oppositely arranged; a fluid pipeline being arranged between the first magnetic ring and the second magnetic ring, the fluid pipeline being in the form of a ring concentric with the first magnetic ring, the fluid pipeline being made of a non-conductive material, the fluid pipeline being internally provided with a metal fluid made of a non-magnetic material, the fluid pipeline being provided with a power transmission part electrically connected with the metal fluid and capable of being electrically connected with the outside; a first magnetic part being movably arranged in the fluid pipeline along the circumference of the fluid pipeline; the fluid pipeline being arranged outside a rotating fan blade, and the rotating fan blade being provided with a second magnetic part magnetically attracted to the first magnetic part. Through the technical scheme, the problem of poor power generation stability of the fluid power generation device using magnetic fluid power generation in the related art can be solved.

Description

Technical Field

[0001] This invention relates to the field of fluid power generation technology, and more specifically, to a fluid power generation device. Background Technology

[0002] With the continuous development of the economy and society, the demand for energy is increasing. However, since traditional major energy sources such as coal and oil are not renewable, this has led to energy crises of varying degrees.

[0003] In related technologies, the rotating blades of a fluid-driven power generation device are rotated, and then the magnetic induction principle is used to generate electricity. Prior art document CN102146883A provides a high-power magnetohydrodynamic (MHD) generator system for wind power generation. It utilizes blades to capture wind energy and rotate, thereby driving a magnet fixedly connected to the blades to rotate. The magnetic field of the rotating magnet passes through a magnetohydrodynamic (MHD) fluid in the power generation channel. The power generation channel is a ring structure coaxial with the blades. The MHD fluid cuts the magnetic induction lines generated by the rotating magnet, and the MHD fluid generates an induced electromotive force in the radial direction of the power generation channel, realizing the conversion of wind energy into electrical energy.

[0004] However, in related technologies that utilize magnetohydrodynamic (MHD) power generation, the MHD is prone to precipitation and aggregation, resulting in uneven distribution of the MHD within the power generation channel and affecting the stability of power generation. Summary of the Invention

[0005] This invention provides a fluid power generation device to solve the problem of poor power generation stability in fluid power generation devices that utilize magnetohydrodynamic power generation in related technologies.

[0006] This invention provides a fluid power generation device, comprising: a magnetic ring including a first magnetic ring and a second magnetic ring concentrically arranged, the first end of the first magnetic ring and the first end of the second magnetic ring being opposite to each other, and the magnetic poles of the first ends of the first magnetic ring and the first ends of the second magnetic ring being opposite; a fluid pipe located between the first magnetic ring and the second magnetic ring, the fluid pipe being an annular structure concentrically arranged with the first magnetic ring, the fluid pipe being made of a non-conductive material, a non-magnetic metal fluid being disposed inside the fluid pipe, and the fluid pipe being provided with a power transmission part electrically connected to the metal fluid and capable of being electrically connected to the outside; a first magnetic element being movably disposed within the fluid pipe along the circumference of the fluid pipe; and a rotating fan blade, the fluid pipe surrounding the outside of the rotating fan blade, the rotating fan blade being provided with a second magnetic element magnetically attracted to the first magnetic element.

[0007] Furthermore, the distance between the first magnetic ring and the second magnetic ring is adjustable.

[0008] Furthermore, the fluid power generation device also includes: a drive unit, which is drivenly connected to the first magnetic ring and / or the second magnetic ring to drive the first magnetic ring and the second magnetic ring to move relative to each other; a speed measuring and detection unit, which can detect the rotational speed of the rotating fan blades; and a control unit, which is electrically connected to the drive unit and the speed measuring and detection unit, and the control unit can control the operation of the drive unit according to the speed measuring and detection unit.

[0009] Furthermore, the driving component includes a double-ended lead screw motor, which includes a body and two lead screw heads disposed on the body. One lead screw head is driven and connected to a first magnetic ring, and the other lead screw head is driven and connected to a second magnetic ring.

[0010] Furthermore, the fluid power generation device also includes: a guide post disposed on one of the first magnetic ring and the second magnetic ring; a guide cylinder disposed on the other of the first magnetic ring and the second magnetic ring, the guide cylinder having a guide hole, and the guide post being movably inserted through the guide hole along the axis of the guide hole.

[0011] Furthermore, the fluid power generation device includes a plurality of first magnetic elements, which are spaced apart circumferentially along the fluid pipe; a plurality of second magnetic elements are provided on the rotating fan blades, and the plurality of second magnetic elements are arranged in a one-to-one correspondence with the plurality of first magnetic elements; and / or, the density of the first magnetic elements is the same as the density of the metal fluid.

[0012] Furthermore, the power transmission section includes positive and negative conductors spaced apart, both of which extend circumferentially along the fluid conduit.

[0013] Furthermore, the fluid power generation device also includes a spoke support and a rotating shaft. The spoke support is fixedly connected to the fluid pipe, and the rotating shaft is rotatably installed through the spoke support. The rotating fan blades are connected to the rotating shaft.

[0014] Furthermore, the fluid power generation device also includes: a first end cap disposed on the rotating shaft and engaging with the spoke support to limit the position of the rotating shaft on the spoke support; and / or, a second end cap disposed on the rotating shaft and engaging with the rotating fan blades to limit the position of the rotating fan blades on the rotating shaft.

[0015] Furthermore, the fluid power generation device also includes: a frame having an upward-facing assembly slot, the inner wall of which is an arc-shaped structure adapted to the outer wall of the fluid pipe, the fluid pipe being installed in the assembly slot; and / or a sealing cover having a through hole on the side wall of the fluid pipe communicating with its inner cavity, the sealing cover being placed over the through hole.

[0016] According to the technical solution of this invention, the fluid power generation device includes a magnetic ring, a fluid channel, a first magnetic component, and a rotating fan blade. The rotating fan blade is driven to rotate by the fluid, which in turn drives a second magnetic component to rotate coaxially. The second magnetic component uses magnetic attraction to drive the first magnetic component to rotate coaxially. The first magnetic component moves circumferentially within the fluid channel, pushing the metallic fluid within the channel to flow circumferentially. This causes the flowing metallic fluid to cut the magnetic induction lines generated by the magnetic ring, generating an induced electromotive force in the radial direction of the magnetic ring. This achieves the conversion of the fluid's mechanical energy into electrical energy. Furthermore, since the power transmission section is electrically connected to both the metallic fluid and the external environment, it can supply the induced electromotive force of the metallic fluid to the external power source. Therefore, by indirectly driving the metallic fluid to cut the magnetic induction lines, and because the metallic fluid is a liquid form of metallic matter, it does not experience sedimentation or aggregation. This ensures that the metallic fluid is uniformly distributed within the fluid channel, and the induced electromotive force is uniformly distributed circumferentially, resulting in stable power generation by the fluid power generation device. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of a fluid power generation device provided according to an embodiment of the present invention is shown;

[0019] Figure 2 A schematic diagram of the structure of the fluid pipe, the first magnetic component, and the rotating fan blade of the fluid power generation device provided according to an embodiment of the present invention is shown.

[0020] Figure 3 A partially enlarged view of the front view of a fluid power generation device provided according to an embodiment of the present invention is shown;

[0021] Figure 4 A partially enlarged cross-sectional view of a fluid power generation device provided according to an embodiment of the present invention is shown;

[0022] Figure 5 A schematic diagram of the rotating fan blades and bearings of a fluid power generation device provided according to an embodiment of the present invention is shown;

[0023] Figure 6 A force analysis diagram of the first magnetic component of a fluid power generation device provided according to an embodiment of the present invention is shown.

[0024] The above figures include the following reference numerals:

[0025] 10. Magnetic ring; 11. First magnetic ring; 12. Second magnetic ring;

[0026] 20. Fluid pipeline; 21. Metallic fluid; 22. Transmission section; 221. Positive conductor; 222. Negative conductor;

[0027] 30. First magnetic component;

[0028] 40. Rotate the fan blades; 41. The blades;

[0029] 51. Drive components; 511. Double-ended lead screw motor; 52. Speed ​​measuring and detection components;

[0030] 61. Guide post; 62. Guide cylinder;

[0031] 71. Spoke support; 72. Rotating shaft; 73. First end cap; 74. Second end cap; 75. Frame; 751. Assembly slot; 76. Sealing cap; 77. Bearing;

[0032] F p The driving force indirectly acting on the first magnetic component as the fan blades rotate;

[0033] F. The Ampere force of the first magnetic component during power generation;

[0034] F n The magnetic attraction between the first magnetic component and the second magnetic component;

[0035] F c Centrifugal force of the first magnetic component;

[0036] F g The gravity of the first magnetic component;

[0037] v, the linear velocity of the first magnetic component. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] like Figures 1 to 6As shown, this embodiment of the invention provides a fluid power generation device, which includes a magnetic ring 10, a fluid pipe 20, a first magnetic element 30, and a rotating fan blade 40. The magnetic ring 10 includes a first magnetic ring 11 and a second magnetic ring 12 arranged concentrically. The first end of the first magnetic ring 11 is arranged opposite to the first end of the second magnetic ring 12, and the magnetic poles of the first end of the first magnetic ring 11 and the first end of the second magnetic ring 12 are opposite. The fluid pipe 20 is located between the first magnetic ring 11 and the second magnetic ring 12. The fluid pipe 20 is a ring structure arranged concentrically with the first magnetic ring 11. The fluid pipe 20 is made of a non-conductive material. A metal fluid 21 made of a non-magnetic material is disposed inside the fluid pipe 20. The fluid pipe 20 is provided with a power transmission part 22 that is electrically connected to the metal fluid 21 and can be electrically connected to the outside. The first magnetic element 30 is movably disposed inside the fluid pipe 20 along the circumference of the fluid pipe 20. The fluid pipe 20 surrounds the outside of the rotating fan blade 40. The rotating fan blade 40 is provided with a second magnetic element that magnetically engages with the first magnetic element 30.

[0040] The fluid power generation device provided in this embodiment includes a magnetic ring 10, a fluid channel, a first magnetic element 30, and a rotating fan blade 40. The rotating fan blade 40 is driven to rotate by the fluid, and the rotating fan blade 40 drives the second magnetic element to rotate coaxially. The second magnetic element drives the first magnetic element 30 to rotate coaxially by magnetic attraction. The first magnetic element 30 moves circumferentially in the fluid channel and pushes the metal fluid 21 in the fluid channel to flow circumferentially in the fluid channel. As a result, the flowing metal fluid 21 cuts the magnetic induction lines generated by the magnetic ring 10, and the metal fluid 21 generates an induced electromotive force in the radial direction of the magnetic ring 10, realizing the conversion of the mechanical energy of the fluid into electrical energy. Since the power transmission unit 22 is electrically connected to the metal fluid 21 and the outside world, the power transmission unit 22 can supply the induced electromotive force of the metal fluid 21 to the outside world for power consumption. Therefore, by indirectly driving the metal fluid 21 to cut the magnetic induction lines through the fluid, since the metal fluid 21 is a liquid form of metallic material, the metal fluid 21 will not produce deposition and aggregation phenomena, so that the metal fluid 21 is evenly distributed in the fluid pipe, and the induced electromotive force of the metal fluid 21 is evenly distributed in the circumferential direction of the fluid pipe, so that the fluid power generation device generates electricity stably.

[0041] It should be noted that, in the case of the first magnetic ring 11 and the second magnetic ring 12 made of multiple spaced individual magnets, the magnetic field strength generated by the first magnetic ring 11 and the second magnetic ring 12 is unevenly distributed in the circumferential direction of the fluid pipe 20 due to the gaps between adjacent individual magnets, resulting in fluctuations in the current generated by cutting magnetic induction lines. In this embodiment, however, the first magnetic ring 11 and the second magnetic ring 12 are made of a single-sided annular magnet, ensuring a uniform distribution of the magnetic field strength generated by the first magnetic ring 11 and the second magnetic ring 12 in the circumferential direction of the fluid pipe 20. This results in a stable and uninterrupted current generated by cutting magnetic induction lines, enabling the fluid power generation device to generate electricity stably.

[0042] Furthermore, since the first magnetic ring 11, the second magnetic ring 12, and the fluid pipe 20 are concentrically arranged, and the fluid pipe 20 is located between the first magnetic ring 11 and the second magnetic ring 12, the direction of the magnetic induction lines generated by the magnetic ring 10 at the fluid pipe 20 is the same as the axial direction of the fluid pipe 20, that is, perpendicular to the flow direction of the metal fluid 21. This can enhance the potential generated by the flowing metal fluid 21 and improve the power generation efficiency of the fluid power generation device.

[0043] It should be noted that fluids include wind and water flow. The rotating fan blades 40 are used to receive water flow or wind power to obtain rotational power. The power generation rate of the fluid power generation device refers to the conversion rate of mechanical energy of the fluid into electrical energy.

[0044] In this embodiment, the first magnetic ring 11, the second magnetic ring 12, and the first magnetic component 30 are all made of permanent magnets (such as rubidium, iron, boron magnets or rare earth magnets), which can enhance the magnetic field strength of the fluid pipe 20 and make the flow rate of the metal fluid 21 faster. The metal fluid 21 can be made of mercury solution or amalgam (such as silver amalgam or gold amalgam), which reduces the power generation internal resistance and fluid resistance of the metal fluid 21 in the fluid power generation device.

[0045] Specifically, according to the principle of electromagnetic induction:

[0046]

[0047] Where I is the current, B is the magnetic field strength, L is half the radial dimension of the fluid pipe 20, v is the flow velocity of the metal fluid 21, and R is the internal resistance of the metal fluid 21. Since the resistivity of the magnetic fluid (Fe3O4) is 4*10⁻⁶... -5 The resistivity of metallic fluid 21 (gold amalgam) is 3.6 × 10⁻⁶ Ω / m. -7 The resistivity of the metal fluid 21 (gold amalgam) is much smaller than that of the magnetic fluid (Fe3O4) under the same power generation conditions, which allows the metal fluid 21 to generate a larger current than the magnetic fluid (Fe3O4).

[0048] Under laminar flow conditions, according to the Nikuradse experimental equations:

[0049]

[0050] Where λ is the coefficient of friction and Re is the Reynolds number, a dimensionless number.

[0051] According to Reynolds' equation:

[0052]

[0053] Among them, v c Let ρ be the flow velocity, d be the diameter of the fluid pipe 20, and u be the fluid viscosity. The density of the high-density magnetic fluid is 4.9 g / cm³. 3 The viscosity of the high-density magnetofluid is between 5 Pa*s and 8 Pa*s, and the density of mercury is 13.59 g / cm³. 3 Mercury has a viscosity of 1.526 MPa*s, indicating that its coefficient of friction is much lower than that of the magnetohydrodynamic fluid. This means that the viscosity and fluid resistance of the metal fluid 21 are both lower than those of the magnetohydrodynamic fluid. Furthermore, during power generation, the magnetohydrodynamic fluid, influenced by Ampere's force, easily separates, deposits, and adheres to the pipe wall, reducing its flow velocity and the change in magnetic flux generated by the flowing fluid, thus lowering the power generation efficiency. Compared to magnetohydrodynamic power generation, using metal fluid 21 reduces heat generation and friction during the process, thereby improving the power generation efficiency of the fluid power generation device.

[0054] Furthermore, compared to winding coils cutting magnetic field lines, in this embodiment, metal fluid is used to cut magnetic field lines, which can reduce the volume. Under the same volume conditions, the metal liquid is equivalent to countless metal wires cutting magnetic field lines in parallel, which enables the power transmission section 22 to output a larger current and improve the power generation efficiency of the fluid power generation device.

[0055] In this embodiment, the distance between the first magnetic ring 11 and the second magnetic ring 12 is adjustable. When the flow rate of the fluid changes, the flow rate of the metal fluid 21 changes synchronously. By adjusting the distance between the first magnetic ring 11 and the second magnetic ring 12, the magnetic induction intensity generated by the magnetic ring 10 at the fluid pipe 20 can be changed, so that the potential generated by the metal fluid 21 after the speed change is not affected by the speed change, thereby improving the power generation stability of the fluid power generation device.

[0056] like Figure 6 As shown, F p F is the driving force indirectly acting on the first magnetic component 30 to rotate the fan blade 40, and F is the Ampere force of the first magnetic component 30 during power generation. n For the magnetic attraction between the first magnetic element 30 and the second magnetic element, F c For the centrifugal force of the first magnetic component 30, F gThe gravity of the first magnetic component 30.

[0057] According to Ampere's law:

[0058] F = BIL

[0059] Where F represents the Ampere force, B represents the magnetic field strength, I represents the current, and L represents the radial distance between the positive and negative conductors 221 and 222 in the fluid pipe 20. Since the Ampere force F flows in the opposite direction to the flow of the metallic fluid 21, when the current I is constant, the greater the distance between the first magnetic ring 11 and the second magnetic ring 12, the smaller the magnetic field strength B, the smaller the Ampere force F, and the smaller the resistance experienced by the rotating fan blade 40. Therefore, when the fluid velocity is low, increasing the distance between the first magnetic ring 11 and the second magnetic ring 12 can reduce the resistance experienced by the rotating fan blade 40, allowing the rotating fan blade 40 to rotate normally and enabling the fluid power generation device to generate electricity normally.

[0060] According to Newton's principles of mechanics, centrifugal force can be known as follows:

[0061]

[0062] Among them, F c Let m be the centrifugal force of the first magnetic component 30, v be the mass of the first magnetic component 30, v be the linear velocity of the rotation of the first magnetic component 30, and r be the distance between the first magnetic component 30 and its rotation axis.

[0063] When the centrifugal force F c The magnetic attraction F between the first magnetic component 30 and the second magnetic component is equal to... n At this time, the fluid power generation device reaches its maximum power generation efficiency, and the flow velocity v of the first magnetic component 30 is... c for:

[0064]

[0065] At this point, the first magnetic component 30 reaches an equilibrium state, and is only subject to its own gravity and the frictional force between itself and the fluid pipe 20. By adjusting the distance between the first magnetic ring 11 and the second magnetic ring 12, the rotational speed of the first magnetic component 30 is maintained at v under the drive of fluids with different flow rates. c To maintain the fluid power generation device at maximum power generation efficiency.

[0066] Specifically, when the fluid velocity decreases, the velocity of the metal fluid 21 decreases synchronously. By shortening the distance between the first magnetic ring 11 and the second magnetic ring 12, the magnetic induction intensity generated by the magnetic ring 10 at the fluid pipe 20 is increased, so that the potential generated by the decelerated metal fluid 21 is not affected by the deceleration. When the fluid velocity increases, the velocity of the metal fluid 21 increases synchronously. By increasing the distance between the first magnetic ring 11 and the second magnetic ring 12, the magnetic induction intensity generated by the magnetic ring 10 at the fluid pipe 20 is reduced, so that the potential generated by the accelerated metal fluid 21 is not affected by the acceleration.

[0067] like Figure 1 As shown, the fluid power generation device also includes a drive unit 51, a speed measuring and detection unit 52, and a control unit. The drive unit 51 is driven to the first magnetic ring 11 and / or the second magnetic ring 12 to drive the first magnetic ring 11 and the second magnetic ring 12 to move relative to each other. The speed measuring and detection unit 52 can detect the rotational speed of the rotating fan blade 40. The control unit is electrically connected to the drive unit 51 and the speed measuring and detection unit 52, and the control unit can control the operation of the drive unit 51 according to the speed measuring and detection unit 52. Since the flow velocity of the metal fluid 21 and the rotational speed of the rotating fan blade 40 are linearly related, that is, the flow velocity of the metal fluid 21 is equal to the angular velocity of the rotation of the rotating fan blade 40 multiplied by the distance of the metal fluid 21 from the rotational axis of the rotating fan blade 40, the flow velocity of the metal fluid 21 sealed in the fluid pipe 20 can be known by detecting the rotational speed of the rotating fan blade 40 through the speed measuring device 52. Then, when the flow velocity of the fluid changes, the control device controls the drive device 51 to drive the first magnetic ring 11 and the second magnetic ring 12 according to the flow velocity of the metal fluid 21, changing the distance between the first magnetic ring 11 and the second magnetic ring 12, so that the potential generated by the metal fluid 21 after the speed change is not affected by the speed change, improving the power generation stability of the fluid power generation device, obtaining the maximum energy conversion efficiency, being compatible with extreme environments, and realizing high-efficiency power generation under different environments.

[0068] like Figure 1 As shown, the driving component 51 includes a double-ended lead screw motor 511. The double-ended lead screw motor 511 includes a body and two lead screw heads disposed on the body. One lead screw head is drivenly connected to the first magnetic ring 11, and the other lead screw head is drivenly connected to the second magnetic ring 12. By using the above-mentioned double-ended lead screw motor 511, when adjusting the distance between the first magnetic ring 11 and the second magnetic ring 12, the first magnetic ring 11 and the second magnetic ring 12 can be made to move synchronously in opposite directions, ensuring that the distance between the first magnetic ring 11 and the fluid pipe 20 is equal to the distance between the second magnetic ring 12 and the fluid pipe 20. This ensures that the direction of the magnetic induction lines generated by the magnetic ring 10 at the fluid pipe 20 is not affected by the change in the distance between the first magnetic ring 11 and the second magnetic ring 12.

[0069] In this embodiment, the double-ended lead screw motor 511 has a self-locking and braking function, which enables the double-ended lead screw motor 511 to prevent relative movement between the first magnetic ring 11 and the second magnetic ring 12 when there is no power supply. This keeps the distance between the first magnetic ring 11 and the second magnetic ring 12 fixed and avoids external interference from affecting the distance between the first magnetic ring 11 and the second magnetic ring 12.

[0070] In this embodiment, the first magnetic ring 11 and the second magnetic ring 12 are provided with worm grooves corresponding to the lead screw head. The lead screw head and the worm groove are threaded together, so that the rotating lead screw head drives the first magnetic ring 11 and the second magnetic ring 12 to move through the threaded engagement.

[0071] like Figure 1 As shown, the fluid power generation device also includes a guide post 61 and a guide cylinder 62. The guide post 61 is disposed on one of the first magnetic ring 11 and the second magnetic ring 12, and the guide cylinder 62 is disposed on the other of the first magnetic ring 11 and the second magnetic ring 12. The guide cylinder 62 has a guide hole, and the guide post 61 is movably inserted through the guide hole along its axis. When adjusting the distance between the first magnetic ring 11 and the second magnetic ring 12, the guide hole guides the guide post 61, ensuring that the first magnetic ring 11 moves only relative to the second magnetic ring 12 in its axial direction. This stabilizes the relative movement between the first magnetic ring 11 and the second magnetic ring 12, making the adjustment of the distance between the first magnetic ring 11 and the second magnetic ring 12 stable and reliable, thereby improving the power generation stability of the fluid power generation device.

[0072] In this embodiment, the fluid power generation device includes a plurality of first magnetic elements 30, which are spaced apart circumferentially along the fluid pipe 20. A plurality of second magnetic elements are provided on the rotating fan blade 40, and each of the second magnetic elements corresponds one-to-one with one of the first magnetic elements 30. When the second magnetic elements drive the metal fluid 21 in the fluid pipe 20 to flow through the first magnetic elements 30, the aforementioned one-to-one correspondence between the second magnetic elements and the first magnetic elements 30 ensures that the driving force on the metal fluid 21 is uniformly distributed circumferentially in the fluid pipe 20, resulting in a uniform distribution of the metal fluid 21 and its flow velocity, thus enabling the fluid power generation device to generate electricity stably.

[0073] In this embodiment, the number of first magnetic elements 30, the number of second magnetic elements, and the number of blades 41 of the rotating fan blade 40 are equal, and the multiple first magnetic elements 30 are arranged symmetrically with respect to the rotation center of the rotating fan blade 40, which can balance the forces and make the fluid power generation device generate electricity stably.

[0074] In this embodiment, the density of the first magnetic component 30 is the same as the density of the metal fluid 21. When the first magnetic component 30 pushes the metal fluid 21 to flow in the fluid pipe 20, since the density of the first magnetic component 30 is the same as the density of the metal fluid 21, the centrifugal force generated by the first magnetic component 30 and the metal fluid 21 is evenly distributed in the circumferential direction of the fluid pipe 20, avoiding shaking of the fluid pipe 20, avoiding collisions and friction between the fluid pipe 20 and the rotating fan blade 40, reducing frictional resistance, and improving the stability and power generation rate of the fluid power generation device.

[0075] In this embodiment, the first magnetic element 30 pushes the metal fluid 21 to flow in the fluid pipe 20, and at the same time, the first magnetic element 30 can also clean the inner cavity of the fluid pipe 20.

[0076] like Figure 2 As shown, the power transmission section 22 includes a positive conductor 221 and a negative conductor 222 spaced apart, both extending circumferentially along the fluid conduit 20. Because the flowing metallic fluid 21 generates an induced electromotive force in the radial direction of the magnetic ring 10, and the positive conductor 221 and negative conductor 222 are located at opposite ends of the fluid conduit 20 in the radial direction, the induced electromotive force generated by the metallic fluid 21 can produce a current flowing from the negative conductor 222 to the positive conductor 221 or from the positive conductor 221 to the negative conductor 222. The direction of the current flow is determined by the direction of the metallic fluid 21 and the direction of the magnetic field generated by the magnetic ring 10 at the fluid conduit 20.

[0077] In this embodiment, positive wire 221 and negative wire 222 are used to output current. Compared with multiple brushes alternately contacting the charged blades, the output current may have interruptions or fluctuations during the alternation of two brushes. In this embodiment, the contact between the brushes and the rotating fan blades 40 can avoid additional resistance, improve the energy conversion rate, and reduce the maintenance frequency.

[0078] like Figure 1 As shown, the fluid power generation device also includes a spoke support 71 and a rotating shaft 72. The spoke support 71 is fixedly connected to the fluid pipe 20, and the rotating shaft 72 is rotatably mounted through the spoke support 71. The rotating fan blade 40 is connected to the rotating shaft 72. The spoke support 71 supports the fluid pipe 20, improving its stability and preventing collisions and friction between the fluid pipe 20 and the rotating fan blade 40, thus reducing frictional resistance. Mounting the rotating fan blade 40 on the rotating shaft 72 reduces its rotational resistance, thereby improving the stability and power generation rate of the fluid power generation device.

[0079] like Figure 5As shown, the fluid power generation device also includes a bearing 77. The inner ring of the bearing 77 is fitted onto the rotating shaft 72 and connected to the rotating shaft 72. The spoke support 71 is fitted onto the outer ring of the bearing 77 and connected to the outer ring of the bearing 77. The bearing 77 provides rotational support and reduces the resistance of the rotating fan blade 40.

[0080] Therefore, compared to traditional magnetohydrodynamic (MHD) power generation, which requires overcoming wind resistance from redundant mechanisms, frictional resistance from its own weight, frictional force from rotor bearings, frictional resistance between the magnetohydrodynamic fluid and the pipe wall, and frictional force from brushes, in this embodiment, the fluid power generation device only needs to overcome the frictional force of the bearing 77 and the frictional resistance between the metal fluid 21 and the pipe wall of the fluid pipe 20. Furthermore, the frictional resistance of the metal fluid 21 is less than that of traditional magnetohydrodynamic (MHD), which greatly improves the energy conversion efficiency.

[0081] In this embodiment, the speed measuring device 52 is mounted on the spoke support 71.

[0082] like Figure 1 As shown, the fluid power generation device also includes a first end cap 73, which is disposed on the rotating shaft 72 and engages with the spoke support 71 to limit the position of the rotating shaft 72 on the spoke support 71. During the rotation of the fan blade 40, the first end cap 73 limits the position of the rotating shaft 72 on the spoke support 71, preventing the rotating shaft 72 from falling off the spoke support 71 and improving the structural reliability of the fluid power generation device.

[0083] like Figure 1 As shown, the fluid power generation device also includes a second end cap 74, which is disposed on the rotating shaft 72 and engages with the rotating fan blade 40 to limit the position of the rotating fan blade 40 on the rotating shaft 72. During the rotation of the rotating fan blade 40, the second end cap 74 restricts the position of the rotating fan blade 40 on the rotating shaft 72, preventing the rotating fan blade 40 from becoming loose and falling off the rotating shaft 72, thereby improving the structural reliability of the fluid power generation device.

[0084] like Figure 1 As shown, the fluid power generation device also includes a frame 75, which has an upward-opening mounting groove 751. The inner wall of the mounting groove 751 is an arc-shaped structure adapted to the outer wall of the fluid pipe 20, and the fluid pipe 20 is installed in the mounting groove 751. The frame 75 supports the fluid pipe 20 and the spoke support 71, improving the stability of the fluid pipe 20 and the rotating fan blades 40, and enhancing the structural reliability of the fluid power generation device.

[0085] like Figure 1As shown, the fluid power generation device also includes a sealing cover 76. A through hole communicating with the inner cavity of the fluid pipe 20 is provided on the side wall of the fluid pipe 20, and the sealing cover 76 is placed over the through hole. The sealing cover 76 is opened, and metallic fluid 21 is filled into the fluid pipe 20 through the through hole. After filling, the sealing cover 76 seals the metallic fluid 21 inside the fluid pipe 20 to prevent oxidation and deterioration, thereby improving the service life of the fluid power generation device.

[0086] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0087] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0088] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0089] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0090] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0091] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A fluid power generation device, characterized in that, The fluid power generation device includes: The magnetic ring (10) includes a first magnetic ring (11) and a second magnetic ring (12) arranged concentrically. The first end of the first magnetic ring (11) is arranged opposite to the first end of the second magnetic ring (12), and the magnetic poles of the first end of the first magnetic ring (11) and the first end of the second magnetic ring (12) are opposite. The first magnetic ring (11) and the second magnetic ring (12) are made of a ring magnet with a whole surface. A fluid conduit (20) is located between the first magnetic ring (11) and the second magnetic ring (12). The fluid conduit (20) is a ring structure concentrically arranged with the first magnetic ring (11). The fluid conduit (20) is made of a non-conductive material. A metal fluid (21) made of a non-magnetic material is disposed inside the fluid conduit (20). The fluid conduit (20) is provided with a power transmission part (22) that is electrically connected to the metal fluid (21) and can be electrically connected to the outside. A first magnetic element (30) is movably disposed within the fluid conduit (20) along the circumference of the fluid conduit (20); Rotate the fan blade (40), the fluid pipe (20) surrounds the outside of the rotating fan blade (40), and the rotating fan blade (40) is provided with a second magnetic element that magnetically engages with the first magnetic element (30); The distance between the first magnetic ring (11) and the second magnetic ring (12) is adjustable.

2. The fluid power generation device according to claim 1, characterized in that, The fluid power generation device also includes: A driving element (51) is drivingly connected to the first magnetic ring (11) and / or the second magnetic ring (12) to drive the first magnetic ring (11) and the second magnetic ring (12) to move relative to each other; The speed measuring device (52) is capable of detecting the rotational speed of the rotating fan blade (40); The control unit is electrically connected to the drive unit (51) and the speed detection unit (52), and the control unit can control the drive unit (51) to work according to the speed detection unit (52).

3. The fluid power generation device according to claim 2, characterized in that, The driving component (51) includes a double-headed lead screw motor (511), which includes a body and two lead screw heads disposed on the body. One of the lead screw heads is driven to be connected to the first magnetic ring (11), and the other lead screw head is driven to be connected to the second magnetic ring (12).

4. The fluid power generation device according to claim 1, characterized in that, The fluid power generation device also includes: A guide post (61) is disposed on one of the first magnetic ring (11) and the second magnetic ring (12); A guide cylinder (62) is disposed on the other of the first magnetic ring (11) and the second magnetic ring (12). The guide cylinder (62) has a guide hole, and the guide post (61) is movably inserted through the guide hole along the axis of the guide hole.

5. The fluid power generation device according to any one of claims 1 to 4, characterized in that, The fluid power generation device includes a plurality of first magnetic elements (30), which are spaced apart circumferentially along the fluid pipe (20). The rotating fan blade (40) is provided with a plurality of second magnetic elements, which are arranged in a one-to-one correspondence with the plurality of first magnetic elements (30); and / or, The density of the first magnetic component (30) is the same as the density of the metal fluid (21).

6. The fluid power generation device according to any one of claims 1 to 4, characterized in that, The power transmission section (22) includes a positive conductor (221) and a negative conductor (222) spaced apart, both of which extend circumferentially along the fluid conduit (20).

7. The fluid power generation device according to any one of claims 1 to 4, characterized in that, The fluid power generation device also includes a spoke support (71) and a rotating shaft (72). The spoke support (71) is fixedly connected to the fluid pipe (20), and the rotating shaft (72) is rotatably inserted through the spoke support (71). The rotating fan blade (40) is connected to the rotating shaft (72).

8. The fluid power generation device according to claim 7, characterized in that, The fluid power generation device also includes: A first end cap (73) is disposed on the rotating shaft (72) and engages with the spoke support (71) to limit the position of the rotating shaft (72) on the spoke support (71); and / or, The second end cap (74) is disposed on the rotating shaft (72) and engages with the rotating fan blade (40) to limit the position of the rotating fan blade (40) on the rotating shaft (72).

9. The fluid power generation device according to any one of claims 1 to 4, characterized in that, The fluid power generation device also includes: The frame (75) has an upward-opening mounting slot (751), the inner wall of which is an arc-shaped structure adapted to the outer wall of the fluid conduit (20), the fluid conduit (20) being installed within the mounting slot (751); and / or, The sealing cap (76) is provided on the side wall of the fluid pipe (20) and has a through hole that communicates with its inner cavity. The sealing cap (76) is placed on the through hole.

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