Fluid energy conversion apparatus and engineering machine

Abstract

The present application relates to the technical field of energy conversion devices, and discloses a fluid energy conversion apparatus and an engineering machine. The fluid energy conversion apparatus comprises a rotating body, at least one first blade component, and at least one first limiting portion. The rotating body is used for outputting rotational mechanical energy. The first blade component has a first surface and a first axis. The first blade component rotates about the first axis and is connected to the rotating body, and an included angle is formed between the first axis and an axial direction of the rotating body. The first limiting portion is capable of limiting the first blade component, such that the first surface is in a flow-facing state. The foregoing configuration can improve fluid energy conversion efficiency, thereby further increasing the utilization rate of fluid energy.

Description

Fluid energy conversion devices and engineering machinery Technical Field

[0001] This application relates to the field of energy conversion equipment technology, specifically to fluid energy conversion devices and engineering machinery. Background Technology

[0002] In related technologies, fluid energy converts mechanical energy into electrical energy through kinetic energy conversion devices. For example, wind energy uses wind turbines to capture airflow to drive blades to rotate and generate electricity. Water flow energy (such as hydropower and tidal energy) converts the kinetic energy of water flow into mechanical energy through water turbines, which then drive generators to generate electricity. Both technologies rely on fluid motion to drive rotors, and the core lies in energy transfer efficiency and equipment design optimization.

[0003] However, the components used for fluid energy conversion have low conversion efficiency, making it impossible to further improve the utilization rate of fluid energy. Summary of the Invention

[0004] This application provides a fluid energy conversion device and engineering machinery, which can improve the fluid energy conversion efficiency and further improve the utilization rate of fluid energy.

[0005] On the one hand, this application provides a fluid energy conversion device, including a rotating body, at least one first blade component and at least one first limiting part, the specific scheme of which is as follows.

[0006] The rotating body is used to output rotational mechanical energy; the first blade component has a first surface and a first axis, the first blade component rotates around the first axis and is connected to the rotating body, the first axis is set at an angle to the axial direction of the rotating body; the first limiting part can limit the first blade component so that the first surface is in the upstream state.

[0007] Beneficial effects: By rotatably arranging at least one first blade component around a first axis on a rotating body, and by limiting the first blade component to keep it in the flow-facing state, a driving force is provided for the rotating body. When the first blade component is in the non-flow-facing state, the fluid acts on the surface of the first blade component opposite to the first surface. At this time, the first limiting part does not limit the first blade component, allowing the first blade component to rotate under the force of the fluid, thereby reducing the force of the fluid on the first blade component and reducing the resistance of the first blade component to the rotating body. This improves the conversion efficiency of fluid energy and further enhances the utilization rate of fluid energy.

[0008] In one alternative embodiment, the first blade component is provided with an offset rotating shaft portion at a first end along the first axis, the rotating shaft portion rotating about the first axis and connected to the rotating body, and the first limiting portion being used to limit a portion at the first end that is away from the rotating shaft portion.

[0009] In one alternative embodiment, at least one second limiting portion is further included, and the first blade component rotates between the first limiting portion and the second limiting portion.

[0010] In an optional embodiment, the system further includes a linkage, wherein the number of the first blade components is at least two, the linkage is rotatably connected to the rotating body about the first axis, the first blade components are provided at both ends of the linkage along the first axis, the two first blade components on the linkage are centrally symmetrically arranged, and the center of symmetry of the two first blade components is located on the rotation axis of the linkage, and the first limiting part and the second limiting part are located on the linkage.

[0011] In one optional embodiment, a first buffer is provided on the first limiting part, and a second buffer is provided on the second limiting part.

[0012] In one optional embodiment, a third buffer is provided on the part of the rotating body that contacts the first buffer, and a fourth buffer is provided on the part of the rotating body that contacts the second buffer. The first buffer, the second buffer, the third buffer, and the fourth buffer are all embedded with magnetic elements.

[0013] The first buffer and the third buffer are arranged in a mutually exclusive manner, and the second buffer and the fourth buffer are arranged in a mutually exclusive manner.

[0014] In an alternative implementation, a synchronizer is further included, the synchronizer comprising:

[0015] A first shaft is rotatably mounted on the rotating body, and the first shaft is provided with a first meshing tooth and a first limiting part;

[0016] The second shaft is rotatably mounted on the rotating body, and the second shaft is provided with a second meshing tooth and a second limiting part;

[0017] An intermediate wheel is rotatably mounted on the rotating body and meshes with both the first meshing tooth and the second meshing tooth;

[0018] The first blade component is connected to at least one of the first shaft and the second shaft.

[0019] In an optional embodiment, a third limiting part is further included. The first blade component includes a first blade body, a first connecting shaft, and a second connecting shaft. The first blade component has a second axis. The first connecting shaft is rotatably connected to the first blade body. The first connecting shaft and the second connecting shaft are rotatably connected around the second axis. The second connecting shaft is fixedly connected to the rotating body. The third limiting part can restrict the first connecting shaft from rotating synchronously with the linkage. The second axis is perpendicular to the first axis.

[0020] Alternatively, it may include a third limiting part, wherein a third connecting shaft is rotatably provided on the rotating body along the second axis, the rotating shaft part is rotatably connected to the third connecting shaft, and the third limiting part can limit the axis of the rotating shaft part from being perpendicular to the axis of the rotating body, wherein the second axis is perpendicular to the axis of the rotating body.

[0021] In one optional embodiment, the rotating body has a receiving shell, the receiving shell is provided with at least one receiving cavity, the receiving cavity is provided with an opening and a limiting ring, the limiting ring is rotatable around the rotating body, the limiting ring is provided with a notch and a limiting groove, the notch is connected to the opening and the limiting groove;

[0022] In the folded state, the first blade component is located inside the accommodating cavity; in the unfolded state, at least a portion of the first blade component is located outside the accommodating cavity; in the first position, the limiting ring can limit the rotation of the first blade component around the second axis; in the second position, the limiting groove allows the first blade component to switch between the unfolded and folded states through the notch.

[0023] In one alternative embodiment, a storage housing is further included, which is coaxially sleeved on the rotating body, and the receiving shell is slidable along the axial direction of the rotating body and is located inside the storage housing.

[0024] In an optional embodiment, a filter cover is further included. There are multiple first blade components located inside the filter cover. The multiple first blade components are arranged in two first blade groups. Each first blade group includes multiple first blade components. The multiple first blade components in each first blade group are arranged at intervals along the circumference of the rotating body. The two first blade groups are arranged at intervals along the axial direction of the rotating body.

[0025] The first blade component includes a first part and a second part located on both sides of the first axis, wherein the area of ​​the first part is larger than the area of ​​the second part.

[0026] In any one of the first blade groups, a counterweight is provided on the second part of the first blade component, so that the second parts of the first blade components in the two first blade groups are arranged close to each other.

[0027] In one optional embodiment, the rotating body is provided with at least one rotating rod, the rotating rod is arranged parallel to the rotating body at a distance, at least one second blade component is rotatably disposed on the rotating rod, the second blade component has a third surface, and at least one fourth limiting part is provided on the rotating rod;

[0028] The fourth limiting part can limit the second blade component, so that the third surface is in the face of the flow.

[0029] And / or, multiple rotating bodies are provided, and the multiple rotating bodies are spaced apart along the axial direction of the rotating bodies, and the rotation directions of any two adjacent rotating bodies are opposite.

[0030] On the other hand, this application also provides an engineering machine, including: the fluid energy conversion device in any of the above embodiments.

[0031] Overview of the attached figures Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this application, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 is a schematic diagram of a fluid energy conversion device according to an embodiment of this application;

[0034] Figure 2 is a schematic diagram of a fluid energy conversion device according to an embodiment of this application from another perspective;

[0035] Figure 3 is a schematic diagram of another fluid energy conversion device according to an embodiment of this application;

[0036] Figure 4 is a magnified view of part A in Figure 3;

[0037] Figure 5 is a schematic diagram of another fluid energy conversion device according to an embodiment of this application;

[0038] Figure 6 is a schematic diagram of another fluid energy conversion device according to an embodiment of this application;

[0039] Figure 7 is a schematic diagram of another fluid energy conversion device according to an embodiment of this application;

[0040] Figure 8 is a magnified view of part B in Figure 7;

[0041] Figure 9 is a schematic diagram of the structure of the first buffer, the second buffer, the third buffer, and the fourth buffer in another fluid energy conversion device according to an embodiment of this application;

[0042] Figure 10 is a schematic diagram of another fluid energy conversion device according to an embodiment of this application;

[0043] Figure 11 is a magnified view of part C in Figure 10;

[0044] Figure 12 is a schematic diagram of the fluid energy conversion device in Figure 10 in a folded state;

[0045] Figure 13 is a magnified view of part D in Figure 12;

[0046] Figure 14 is a schematic diagram of another fluid energy conversion device according to an embodiment of this application;

[0047] Figure 15 is a schematic diagram of the fluid energy conversion device in Figure 14 in a folded state;

[0048] Figure 16 is a schematic diagram of the fluid energy conversion device in Figure 14 with the housing shell removed in the folded state;

[0049] Figure 17 is a schematic diagram of the fluid energy conversion device in Figure 14 with the housing shell removed in the deployed state;

[0050] Figure 18 is a schematic diagram of the structure of the two synchronizers in the fluid energy conversion device in Figure 15;

[0051] Figure 19 is a schematic diagram of the structure of a synchronizer in Figure 14;

[0052] Figure 20 is a schematic diagram of another synchronizer in Figure 14;

[0053] Figure 21 is a schematic diagram of another fluid energy conversion device according to an embodiment of this application;

[0054] Figure 22 is a structural schematic diagram of the fluid energy conversion device in Figure 21 from another perspective;

[0055] Figure 23 is a magnified view of a portion of point E in Figure 22;

[0056] Figure 24 is a schematic diagram of the folded state of the fluid energy conversion device in Figure 21;

[0057] Figure 25 is a magnified view of part F in Figure 24;

[0058] Figure 26 is a schematic diagram of another fluid energy conversion device according to an embodiment of this application;

[0059] Figure 27 is a schematic diagram of the fluid energy conversion device in Figure 26 in its folded state;

[0060] Figure 28 is a schematic diagram of another fluid energy conversion device according to an embodiment of this application;

[0061] Figure 29 is a structural schematic diagram of another state of the fluid energy conversion device in Figure 28;

[0062] Figure 30 is a schematic diagram of another fluid energy conversion device according to an embodiment of this application;

[0063] Figure 31 is a schematic diagram of the structure of the fluid energy conversion device in Figure 30, showing the removal of the filter cover.

[0064] Figure 32 is a schematic diagram of another fluid energy conversion device according to an embodiment of this application;

[0065] Figure 33 is a schematic diagram of another fluid energy conversion device according to an embodiment of this application;

[0066] Figure 34 is a schematic diagram of another fluid energy conversion device according to an embodiment of this application;

[0067] Figure 35 is a schematic diagram of another fluid energy conversion device according to an embodiment of this application;

[0068] Figure 36 is a magnified view of a portion of point G in Figure 35;

[0069] Figure 37 is a schematic diagram of the first side of the blade component in another embodiment of the fluid energy conversion device of this application;

[0070] Figure 38 is a schematic diagram of another fluid energy conversion device according to an embodiment of this application.

[0071] Explanation of reference numerals in the attached drawings: 1. Rotating body; 2. First blade component; 3. First limiting part; 4. Second limiting part; 5. Linkage device; 6. Synchronizer; 7. Third limiting part; 8. Receiving shell; 9. Storage shell; 91. Rotating bearing; 10. Filter cover; 11. Third buffer component; 12. Fourth buffer component; 13. Third connecting shaft; 14. First part; 15. Second part; 16. Counterweight; 17. Rotating rod; 18. Second blade component; 19. Fourth limiting part; 20. Detection module; 21. First surface; 22. Rotating shaft part; 23. 1. First blade body; 231. Stop bar; 232. Hand stop; 24. First connecting shaft; 25. Second connecting shaft; 31. First buffer component; 41. Second buffer component; 51. Guide roller; 61. First shaft body; 611. First meshing tooth; 62. Second shaft body; 621. Second meshing tooth; 63. Intermediate wheel; 81. Accommodating cavity; 82. Opening; 821. Second arc-shaped part; 83. Limiting ring; 831. Limiting groove; 832. Notch; 84. Cover plate; 841. First arc-shaped part; 101. Reset buffer component; 1a, Rotating body; 2a, Blade component; 3a, Connecting assembly; 4a, Detection module; 21a, First surface; 22a, Second surface; 23a, First axis; 211a, First part; 212a, Second part; 2121a, Extension; 221a, First limiting groove; 222a, Second limiting groove; 223a, Reinforcing layer; 224a, Buffer sheet; 31a, Buffer ring; 32a, Connector. Detailed Implementation

[0072] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0073] It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and 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 of this application. The terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. The terms "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, wherein the acceptable deviation range is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where an acceptable deviation range for approximate parallelism can be, for example, within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where an acceptable deviation range for approximate perpendicularity can also be, for example, within 5°. "Equal" includes absolute equality and approximate equality, where an acceptable deviation range for approximate equality can be, for example, a difference between the two equal items being less than or equal to 5% of either one. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0074] In related technologies, fluid energy converts mechanical energy into electrical energy through kinetic energy conversion devices. For example, wind energy uses wind turbines to capture airflow to drive blades to rotate and generate electricity. Water flow energy (such as hydropower and tidal energy) converts the kinetic energy of water flow into mechanical energy through water turbines, which then drive generators to generate electricity. Both technologies rely on fluid motion to drive rotors, and the core lies in energy transfer efficiency and equipment design optimization.

[0075] However, the components used for fluid energy conversion have low conversion efficiency, making it impossible to further improve the utilization rate of fluid energy.

[0076] To address the aforementioned technical problems, this application provides a fluid energy conversion device and engineering machinery, which can improve fluid energy conversion efficiency and further enhance the utilization rate of fluid energy.

[0077] The embodiments of this application are described below with reference to Figures 1 to 32.

[0078] According to an embodiment of this application, a fluid energy conversion device is provided, as shown in Figures 1 to 5, including a rotating body 1, at least one first blade component 2 and at least one first limiting part 3, the specific scheme of which is as follows.

[0079] It should be noted that the fluid energy conversion device provided in this application can be a device that uses the fluid energy of water for energy conversion, a device that uses the fluid energy of wind for energy conversion, or any other energy conversion device that uses fluid energy. The arrows in Figures 1 to 3 indicate the direction of fluid energy flow.

[0080] As shown in Figures 1 to 5, the rotating body 1 is used to output rotational mechanical energy. Specifically, the rotating body 1 can be a solid shaft, such as a metal shaft, or a hollow tube, such as a steel pipe or a plastic pipe; it can also be other objects that can rotate, and the shape does not necessarily have to be regular, such as a column with a square or polygonal cross-section. When the rotating body 1 is a hollow tube, it can be fitted onto other shafts to rotate.

[0081] As shown in Figures 1 and 5, the number of first blade components 2 can be one or more. The first blade component 2 can be any one of metal blades, plastic blades, or composite material blades (such as blades with an internal metal skeleton and an external lightweight and high-strength material, such as carbon fiber composites, especially with metal components used at the edges where the blades cooperate with other components to enhance strength). The first blade component 2 has a first surface 21 and a first axis. The first blade component 2 rotates around the first axis and is connected to the rotating body 1. The first axis and the axis of the rotating body 1 are set at an angle. Specifically, the first axis and the axis of the rotating body 1 can be located in the same plane, or they can be located in two different planes, and the two different planes are parallel or intersecting. In detail, the angle between the first axis and the axis of the rotating body 1 can be any angle from 30° to 90°, preferably 90°.

[0082] Specifically, the first blade component 2 can be rotatably connected to the rotating body 1, or it can be rotatably connected to the intermediate component, which in turn is connected to the rotating body 1. Alternatively, the first blade component 2 can be fixedly connected to the intermediate component, with the intermediate component rotatably connected to the rotating body 1 around a first axis. For example, as shown in Figures 3 and 4, the rotating body 1 includes a central shaft and a rotating shaft sleeved on the central shaft. The first blade component 2 is mounted on the rotating shaft, and a fixed transverse blade shaft is mounted on this rotating shaft to provide the axis of rotation for the first blade component 2. The first blade component 2, with its specially optimized design, can be sleeved on the blade shaft and rotate freely. A rotating bearing is installed inside the rotating shaft sleeved on the central shaft, in which case the blade shaft and bearing are not visible.

[0083] More specifically, as shown in Figures 1 to 3, the first blade component 2 is plate-shaped; as shown in Figures 3 and 5, the first blade component 2 is arc-shaped, the first surface 21 is concave, and the surface opposite to the first surface 21 is convex. Specifically, the first surface 21 is slightly concave, and the surface opposite to the first surface 21 is slightly convex.

[0084] As shown in Figures 1 to 5, the number of first limiting parts 3 matches the number of first blade components 2. Specifically, the first limiting parts 3 can be any object that can limit the first blade components 2, such as blocks or plates. The first limiting parts 3 can be set on the rotating body 1, or on other parts or components fixed on the rotating body 1, as long as they can limit the first blade components 2.

[0085] Specifically, as shown in Figures 1 to 5, the first limiting part 3 is a block fixed on the rotating body 1.

[0086] The first limiting part 3 can limit the first blade component 2, so that the first surface 21 is in the flow-facing state.

[0087] It should be noted that the center of gravity of the first blade component 2 does not coincide with the axis of rotation of the first blade component 2, or the areas of the portions of the first blade component 2 located on both sides of the first axis are different; each first blade component 2 has its own first axis.

[0088] Operating principle of fluid energy conversion device: As shown in Figure 1, the first limiting part 3 can limit the first blade component 2 to the first surface 21 in the face-flow state. By using the force of the fluid on the first surface 21, the first blade component 2 is pushed to rotate around the axis of the rotating body 1, thereby driving the rotating body 1 to rotate and output rotational mechanical energy.

[0089] When the rotation axis (i.e., the first axis) of the first blade component 2 overlaps with the flow direction of the fluid and continues to rotate, the second surface of the first blade component 2 opposite to the first surface 21 is in the flow-facing state. Under the action of the fluid, the first blade component 2 rotates, reducing the effective contact area between the second surface and the fluid, thereby reducing the force of the fluid on the first blade component 2 and thus reducing the resistance to the rotating body 1.

[0090] When the rotation axis (i.e., the first axis) of the first blade component 2 overlaps with the flow direction of the fluid again and continues to rotate, the first blade component 2 rotates by its own weight and / or the driving force of the fluid acting on the first surface 21, and rotates to the position where the first limiting part 3 limits it, thus being in the flow-facing state, and starting the next cycle.

[0091] In this embodiment, at least one first blade component 2 is rotatably arranged on the rotating body 1 around a first axis, and the first limiting part 3 can limit the first blade component 2 to keep it in the flow-facing state, thereby providing driving force for the rotating body 1. When the first blade component 2 is in the non-flow-facing state, the fluid acts on the surface of the first blade component 2 opposite to the first surface 21. At this time, the first limiting part 3 does not limit the first blade component 2, so that the first blade component 2 rotates under the action of the fluid, thereby reducing the force of the fluid on the first blade component 2, thereby reducing the resistance of the first blade component 2 to the rotating body 1, thereby improving the conversion efficiency of fluid energy and further improving the utilization rate of fluid energy.

[0092] Taking wind energy conversion as an example, when the first blade component 2 rotates to the downwind semicircle, it naturally droops. Under the pressure of the wind and the obstruction of the first limiting part 3, it pushes the rotation axis of the first blade component 2 to rotate backward. When it reaches the upwind semicircle, the first blade component 2 is blown up by the wind. Under the action of the first limiting part 3 and the wind, the plane of the first blade component 2 is in a horizontal running state. It can rely on the characteristics of the first blade component 2 being a lightweight, high-strength, thin sheet material to generate less resistance to run against the wind. As a result, the entire rotating body 1 rotates due to the torque imbalance, thus completing the conversion of wind kinetic energy. The conversion of hydropower and other fluid kinetic energy is the same.

[0093] In a specific embodiment, as shown in FIG14, the first blade component 2 is provided with an offset rotating shaft portion 22 at the first end along the first axis. The rotating shaft portion 22 rotates around the first axis and is connected to the rotating body 1. As shown in FIG21, the first limiting portion 3 is used to limit the portion at the first end that is away from the rotating shaft portion 22. In this state, the force exerted by the first limiting portion 3 on the first blade component 2 is minimal.

[0094] It should be noted that the above-mentioned "offset" refers to the fact that the central axis of the rotating shaft 22 does not coincide with the center of gravity of the first blade.

[0095] In this embodiment, as shown in Figures 14 and 21, the offset rotating shaft 22 rotates around the first axis and is connected to the rotating body 1, which facilitates the rapid switching of the first blade component 2 between the oncoming and non-oncoming states, improves the switching speed, and reduces the force on the first limiting part 3.

[0096] In one embodiment, as shown in Figures 1 to 5, the fluid energy conversion device further includes at least one second limiting part 4, and the first blade component 2 rotates between the first limiting part 3 and the second limiting part 4; the number of second limiting parts 4 matches the number of first blade components 2. Specifically, the second limiting part 4 can be any object that can limit the first blade component 2, such as a block or plate. The second limiting part 4 can be set on the rotating body 1 or on other parts, as long as it can limit the first blade component 2.

[0097] Specifically, as shown in Figures 1 to 3, the second limiting part 4 is a block fixed on the rotating body 1; as shown in Figures 4 and 5, the second limiting part 4 is a plate-shaped block disposed on the rotating body 1.

[0098] Specifically, as shown in Figure 4, the first blade component 2 can be extended at its inner end to form a stop 232. The stop 232 contacts and limits the second lateral limiting part 4, and the stop 232 can also contact and limit the first vertical limiting part 3.

[0099] It should be noted that the first limiting part 3 can restrict the first blade component 2 to have an angle between the first surface 21 and the flow direction of the fluid between 60° and 110°. Preferably, the angle between the first surface 21 and the flow direction of the fluid is 90°. At this time, the effective flow-facing area of ​​the first blade component 2 is the largest, and the force exerted by the fluid on the first blade component 2 is the largest. The second limiting part 4 can restrict the first blade component 2 to have an angle between the first surface 21 and the flow direction of the fluid between -30° and 30°. Preferably, the angle between the first surface 21 and the flow direction of the fluid is 0°. At this time, the effective flow-facing area of ​​the first blade component 2 is the smallest, and the force exerted by the fluid on the first blade component 2 is the smallest, that is, the resistance to the rotating body 1 is the smallest.

[0100] In specific use, as shown in Figures 1 to 5, when the rotation axis (i.e., the first axis) of the first blade component 2 overlaps with the flow direction of the fluid and continues to rotate, the second surface of the first blade component 2 opposite to the first surface 21 is in the flow-facing state. Under the action of the fluid, the first blade component 2 rotates and rotates to the position where the second limiting part 4 limits it, so as to reduce the effective contact area between the second surface and the fluid, thereby reducing the force of the fluid on the first blade component 2 and thus reducing the resistance to the rotating body 1.

[0101] In this embodiment, by providing the second limiting part 4, the first blade component 2 can rotate between the first limiting part 3 and the second limiting part 4. The second limiting part 4 can prevent the first blade component 2 from oscillating back and forth when the effective flow area with the fluid is at its minimum, thereby reducing the force on the first blade component 2 and improving the energy conversion efficiency.

[0102] In one embodiment, as shown in Figures 6 to 8, the fluid energy conversion device further includes a linkage 5, and the number of first blade components 2 is at least two. The linkage 5 is rotatably connected to the rotating body 1 around a first axis. Both ends of the linkage 5 along the first axis are provided with first blade components 2. The two first blade components 2 on the linkage 5 are centrally symmetrically arranged, and the center of symmetry of the two first blade components 2 is located on the rotation axis of the linkage 5. The first limiting part 3 and the second limiting part 4 are located on the linkage 5.

[0103] Specifically, as shown in Figure 6, the linkage 5 is a metal frame connecting the two first connecting parts, or it can be other types of connecting parts; Figure 7 shows a scheme in which four linkages 5 are arranged sequentially along the axis of the rotating body 1. In this figure, the rotating body 1 is a sleeve shaft, and two linkages 5 are set on each sleeve shaft, and the rotation directions of the two sleeve shafts are opposite, so as to reduce torque damage to the central stationary shaft and improve service life.

[0104] In a specific structure, as shown in Figure 5, two first blade components 2 are connected by a central rotating shaft (not shown in the figure) to form a whole. The central rotating shaft rotates through the rotating body 1, and the axis of the central rotating shaft coincides with the first axis. The two first blade components 2 rotate together in the above stages, which is called linkage. This structure still conforms to its operating law, thereby simplifying the structure, enhancing stability, and improving conversion efficiency.

[0105] Specifically, as shown in Figure 8, the rotating body 1 is also provided with a reset buffer component 101, which has the tendency to reset the linkage 5 to the position where the first blade component 2 is in the flow-facing state. Specifically, the reset buffer component 101 is a torsion spring, or it can be other types of buffer components.

[0106] In this embodiment, during the rotation of the rotating body 1, the two first blade components 2 are synchronously aligned with the flow direction of the fluid. Then, when it rotates, the linkage 5 enables the two first blade components 2 to rotate synchronously, preventing either first blade component 2 from failing to rotate due to insufficient driving force, thereby improving the stability, reliability and continuity of the equipment operation.

[0107] In one embodiment, as shown in Figures 8 and 9, a first buffer 31 is provided on the first limiting part 3, and a second buffer 41 is provided on the second limiting part 4. Specifically, the first buffer 31 and the second buffer 41 are elastic rubber or other blocks with elastic deformation capabilities.

[0108] In this embodiment, as shown in FIG8, by providing a first buffer block on the first limiting part 3 and a second buffer block on the second limiting part 4, damage to the first limiting part 3 and the second limiting part 4 can be avoided when limiting the first blade component 2, and vibration damage to the rotating body 1 can be avoided, which would affect the rotational balance of the rotating body 1 and reduce the energy conversion efficiency.

[0109] In one embodiment, as shown in Figures 8 and 9, a third buffer 11 is provided on the part of the rotating body 1 that contacts the first buffer 31 by means of pasting, welding or other methods, and a fourth buffer 12 is provided on the part of the rotating body 1 that contacts the second buffer 41 by means of pasting, welding or other methods. Magnetic elements are embedded in the first buffer 31, the second buffer 41, the third buffer 11 and the fourth buffer 12. The first buffer 31 and the third buffer 11 are arranged in a repulsive manner, and the second buffer 41 and the fourth buffer 12 are arranged in a repulsive manner.

[0110] Specifically, the magnetic component can be a permanent magnet or an electromagnet, preferably an electromagnet. The magnitude of the magnetic force can be adjusted by an intelligent system according to the direction and speed of the rotating body 1, as well as the direction, energy intensity and speed of the fluid, resulting in better shock absorption. As shown in Figure 9, magnetic components are embedded on the two opposite surfaces of the first buffer 31 and the third buffer 11, and magnetic components are embedded on the two opposite surfaces of the second buffer 41 and the fourth buffer 12.

[0111] The contact surfaces of the two interacting magnetic components can even be brought close together and firmly attached. The contact surfaces will not produce a violent impact and will instantly change to a positive and negative pole attraction setting until the first axis of the two first blade components 2 is parallel to the direction of fluid energy and is about to enter the next stage. Then, they will immediately change back to a like pole repulsion setting and be bounced away by the fluid action, which will further improve efficiency and enhance stability.

[0112] In this embodiment, as shown in Figure 9, by setting the first buffer 31, the second buffer 41, the third buffer 11, and the fourth buffer 12 to all be magnetic components; the first buffer 31 and the third buffer 11 are arranged to repel each other, and the second buffer 41 and the fourth buffer 12 are arranged to repel each other, which can achieve better shock absorption, with a simple structure and good effect.

[0113] In one embodiment, as shown in Figures 14 to 20, the fluid energy conversion device further includes a synchronizer 6. As shown in Figures 18 to 20, the synchronizer 6 includes a first shaft 61, a second shaft 62, and an intermediate wheel 63. The first shaft 61 is rotatably mounted on the rotating body 1 by means of bearings or bushings. The first shaft 61 is provided with a first meshing tooth 611 and a first limiting part 3. Specifically, the first meshing tooth 611 can be an incomplete gear (i.e., only a portion of the meshing teeth).

[0114] As shown in Figures 18 to 20, the second shaft 62 is rotatably mounted on the rotating body 1 by means of bearings or bushings. The second shaft 62 is provided with a second meshing tooth 621 and a second limiting part 4. Specifically, the second meshing tooth 621 can be an incomplete gear.

[0115] As shown in Figures 18 to 20, the intermediate wheel 63 is rotatably mounted on the rotating body 1 by means of bearings or bushings, and meshes with both the first meshing tooth 611 and the second meshing tooth 621. Specifically, there can be multiple intermediate wheels 63. Correspondingly, there are multiple first meshing teeth 611 on the first shaft 61, which correspond one-to-one with the intermediate wheels 63, and multiple second meshing teeth 621 on the second shaft 62, which correspond one-to-one with the intermediate wheels 63. More specifically, there are two first meshing teeth 611, two second meshing teeth 621, and two intermediate wheels 63.

[0116] As shown in Figures 18 to 20, at least one of the first shaft 61 and the second shaft 62 is connected to the first blade component 2; specifically, the first blade component 2 is connected to either the first shaft 61 or the second shaft 62, or both the first shaft 61 and the second shaft 62 are connected to the first blade component 2 to achieve synchronous rotation.

[0117] In practical use, when the rotating body 1 is rotating, the two first blade components 2 are synchronously aligned with the flow direction of the fluid and then rotate on their own. The intermediate wheel 63 in the synchronizer 6 causes the first shaft 61 and the second shaft 62 to rotate synchronously in the same direction, which enables the two first blade components 2 to rotate synchronously in the same direction.

[0118] As shown in Figure 18, the intermediate wheel 63 can retract inward and disengage from the first meshing tooth 611 and the second meshing tooth 621, so that the blades on the first shaft 61 and the second shaft 62 can have an angle that folds simultaneously.

[0119] In this embodiment, as shown in Figures 18 to 20, a synchronizer 6 is set to connect the two first blade components 2, so as to achieve synchronous rotation in the same direction, thereby preventing either of the first blade components 2 from failing to rotate due to insufficient driving force, and improving the stability and reliability of the equipment operation.

[0120] In some embodiments not shown, the first shaft 61 and the second shaft 62 can be driven by components such as chains or belts and other various means to achieve synchronization.

[0121] In one embodiment, as shown in Figures 10 and 11, the fluid energy conversion device further includes a third limiting part 7. As shown in Figure 11, the first blade component 2 includes a first blade body 23, a first connecting shaft 24, and a second connecting shaft 25. The first blade component 2 has a second axis, that is, each first blade component 2 has its own first axis. The first connecting shaft 24 is rotatably connected to the first blade body 23, and the first connecting shaft 24 and the second connecting shaft 25 are rotatably connected around the second axis through a rotating shaft. The second connecting shaft 25 is fixedly connected to the rotating body 1 by welding. The third limiting part 7 can restrict the first connecting shaft 24 from rotating synchronously with the linkage 5, wherein the second axis is perpendicular to the first axis.

[0122] Specifically, as shown in Figure 11, a stop bar 231 (or other structure) is provided on the first blade body 23, which engages with the rotatable third limiting part 7 on the linkage 5. The third limiting part 7 is specifically a U-shaped block or other limiting structure that is rotatably connected to the linkage 5. The unfolded state of the first blade body 23 is shown in Figure 11, and the folded state of the first blade body 23 is shown in Figures 12 and 13. As can be seen in Figure 13, in the folded state, the stop bar 231 is separated from the third limiting part 7.

[0123] In specific use, as shown in Figures 10 and 11, when energy conversion using fluid energy is required, the first blade body 23 is rotated around the second axis to the unfolded state, and the third limiting part 7 (U-shaped block) is operated to limit the baffle 231 of the first blade body 23, so that the first blade component 2 remains stable in the unfolded state, and then energy conversion is performed; as shown in Figures 12 and 13, when energy conversion is no longer required, the third limiting part 7 is operated to release the baffle 231 of the first blade body 23, so that the first blade body 23 can be folded, thereby facilitating the storage and transportation of the fluid energy conversion device.

[0124] In one embodiment, as shown in Figures 14 to 17, the rotating body 1 has a housing 8, which can be a plastic housing, a metal housing, or a housing made of other materials. As shown in Figures 14 and 15, the housing 8 is provided with at least one housing cavity 81, and the housing cavity 81 is also provided with a cover plate 84. The cover plate 84 is connected to the opening 82 of the housing cavity 81 by means of hinge or snap-fit.

[0125] As shown in Figures 14 and 15, a first arc-shaped portion 841 is provided on the edge of the cover plate 84, and a second arc-shaped portion 821 is provided on the edge of the opening 82 of the accommodating cavity 81. The first arc-shaped portion 841 and the second arc-shaped portion 821 are correspondingly arranged to limit the movement of the first connecting shaft 24. Specifically, rolling bearings or the like are provided at the parts of the first connecting shaft 24 that mate with the first arc-shaped portion 841 and the second arc-shaped portion 821 to reduce wear.

[0126] As shown in Figure 15, the first blade component 2 is in the folded state and is located in the accommodating cavity 81; as shown in Figure 14, the first blade component 2 is in the unfolded state, and the first arc-shaped part 841 and the second arc-shaped part 821 limit the first connecting shaft 24 to prevent it from rotating around the second axis.

[0127] In one embodiment, the fluid energy conversion device further includes a third limiting part 7 (not shown in the figure; specifically, the third limiting part 7 can be a limiting groove 831), as shown in Figures 21 to 25. A third connecting shaft 13 is rotatably provided on the rotating body 1 along the second axis through the cooperation of bearings or bushings. The rotating shaft part 22 is rotatably connected to the third connecting shaft 13. The third limiting part 7 can restrict the axis of the rotating shaft part 22 from being perpendicular to the axis of the rotating body 1, that is, the third limiting part 7 can make the first blade component 2 in an unfolded state and keep it stable; wherein, the second axis is perpendicular to the axis of the rotating body 1.

[0128] Specifically, as shown in Figure 21, the rotating body 1 is provided with two sets of first blade components 2, which are spaced apart along the axial direction of the rotating body 1. The upper set folds downward and the lower set folds upward, and the two sets of first blade components 2 are arranged in a cross-shaped manner in the folded state.

[0129] It should be noted that the third limiting part 7 can be any type of component, as long as it can restrict the first connecting shaft 24 and the second connecting shaft 25 to be coaxial.

[0130] In a specific embodiment, as shown in Figures 21 to 25, the rotating body 1 has a housing shell 8, which can be a plastic shell, a metal shell, or a shell made of other materials. As shown in Figure 21, the housing shell 8 is provided with at least one housing cavity 81 (four in the figure). The housing cavity 81 is provided with an opening 82 and a limiting ring 83. The limiting ring 83 can rotate around the rotating body 1. The limiting ring 83 is provided with a notch 832 and a limiting groove 831. The notch 832 connects the opening 82 and the limiting groove 831. The limiting groove 831 is a third limiting part 7 (not marked in the figure).

[0131] As shown in Figures 15 and 27, the first blade component 2 is located inside the accommodating cavity 81 in the folded state; as shown in Figures 14, 21 and 26, the first blade component 2 is located outside the accommodating cavity 81 in the unfolded state; as shown in Figure 21, the limiting ring 83 is in the first position state, which can limit the rotation of the first blade component 2 around the second axis; as shown in Figure 25, the limiting groove 831 is in the second position state, and the first blade component 2 switches between the unfolded state and the folded state through the notch 832.

[0132] Specifically, a cover plate 84 is provided on the accommodating cavity 81. The cover plate 84 is connected to the opening 82 of the accommodating cavity 81 by means of hinge or snap-fit. A rolling bearing is provided at the part of the first blade component 2 that contacts the limiting groove 831 to reduce wear.

[0133] More specifically, a second limiting part 4 is provided on the inner side wall of the limiting ring 83, as shown in Figure 23. In the first position state, the second limiting part 4 can limit the first blade component 2. As shown in Figure 25, in the second position state, the limiting ring 83 can be offset from the first blade component 2, which facilitates the folding of the first blade component 2. In Figures 23 and 25, the first limiting part 3 is located in the lower space inside the limiting ring 83 and is not visible in the figure.

[0134] In this embodiment, as shown in Figures 21 to 25, by coaxially sleeved with a housing shell 8 on the rotating body 1 and providing a housing cavity 81 on the housing shell 8, it is convenient to store the first blade component 2; at the same time, the limiting ring 83 is provided with a limiting groove 831 and a notch 832, which allows the rotating shaft part 22 of the first blade component 2 to enter the limiting groove 831 through the notch 832, thereby realizing the switching of the first blade component 2 from a folded state to an unfolded state.

[0135] In one embodiment, as shown in Figures 26 to 29, the fluid energy conversion device further includes a housing 9. Specifically, the housing 9 can be a plastic housing, a metal housing, or a housing made of other materials. The housing 9 is coaxially fixedly sleeved on the rotating body 1, and the accommodating shell 8 can slide along the axial direction of the rotating body 1 and is located inside the housing 9.

[0136] The structures of the embodiments shown in Figures 21 to 29 are particularly suitable for applications such as retractable portable or vehicle-mounted, ship-mounted (without the bottom external support) wind energy utilization (power generation, etc.).

[0137] Specifically, a rotating bearing 91 is embedded in the end of the housing 9. The rotating bearing 91 is rotatably connected to the housing 8 of the rotating body 1, and the housing 8 and the rotating bearing 91 are slidably connected along the axial direction of the rotating body 1.

[0138] In this embodiment, by providing a storage housing 9, the accommodating shell 8 is slidably stored inside the storage housing 9. When stored, the volume of the fluid energy conversion device can be reduced, making it easier to carry and store.

[0139] In one embodiment, as shown in FIG30, the fluid energy conversion device further includes a filter cover 10, which can be a frame, mesh structure, etc., made of plastic, metal or other materials, and its exterior can be covered with a fishing net, etc.; there are multiple first blade components 2, which are located inside the filter cover 10, as shown in FIG31. The multiple first blade components 2 are arranged in two first blade groups, and each first blade group includes multiple first blade components 2. The multiple first blade components 2 in each first blade group are arranged at intervals along the circumference of the rotating body 1; wherein, preferably, the rotating bodies 1 of the two first blade groups are not connected, so that the two first blade groups rotate in opposite directions, that is, coaxially opposite rotation, to balance the torque.

[0140] As shown in Figure 31, the first blade component 2 includes a first part 14 and a second part 15 located on both sides of the first axis. The area of ​​the first part 14 is larger than the area of ​​the second part 15, that is, the weight of the first part 14 is greater than the weight of the second part 15. A counterweight 16 is provided on the second part 15 of the upper first blade component 2, so that the second part 15 on the first blade component 2 in the two first blade groups is set close to each other, that is, the weight of the second part 15 after adding the counterweight 16 is greater than the weight of the first part 14.

[0141] In this embodiment, by setting a counterweight 16 on the second part 15 of the first blade component 2, the weight of the second part 15 is increased, so that the second parts 15 of the first blade component 2 in the two first blade groups are set close together, thereby reducing the distance between the two first blade groups and reducing the volume of the filter cover 10. It can be applied to the upper surface of an object (such as a new energy vehicle) to obtain the conversion of fluid energy.

[0142] The embodiment shown in Figure 31 is particularly suitable for hydroelectric conversion. Its rotating body 1 includes a central shaft column that can stand on the underwater structure foundation, and a rotating shaft that is fitted around the central shaft column can rotate around the central shaft column. The rotating shaft is equipped with a fixed transverse blade shaft. Considering the characteristics of the hydroelectric conversion scenario, such as large water flow energy, slow flow velocity and stable operation, the first blade component 2 can be designed to be short and sturdy. The first blade component 2 can rotate freely on the blade shaft. The first blade component 2 is blocked by the horizontally set and vertically set first limit member 3 and / or second limit member 4, and can only rotate freely within the angle range between them. Its collision contact point can be equipped with shock absorbers, shock absorbers and rubber pads and other vibration reduction and noise reduction measures, thereby completing the hydroelectric conversion process. A detection module 20 can be installed on the top of the central shaft column 31 to apply intelligent control technology. The two blades are arranged in a coaxial and reversed manner. A counterweight 16 is set on the second part 15 of the first blade component 2 located at the top. The counterweight 16 is set on the narrow side so that the wide side of the blade naturally faces upward. Compared with the ordinary standard form, it is inverted. This is conducive to the installation of a spherical protective net frame. Covering it with a fishing net can reduce the entanglement of foreign objects and weeds, and can also prevent fish from being injured and protect the structure. It can also be placed upside down on offshore drilling platforms, etc., to generate electricity using ocean currents.

[0143] In one embodiment, as shown in FIG32, at least one rotating rod 17 is fixedly provided on the rotating body 1 by welding, bolting, or other means. The rotating rod 17 is arranged parallel to the rotating body 1 at intervals. At least one second blade component 18 is rotatably provided on the rotating rod 17 by means of bearing or bushing. The second blade component 18 has a third surface. At least one fourth limiting part 19 is provided on the rotating rod 17. The fourth limiting part 19 can limit the second blade component 18 so that the third surface is in the flow-facing state. Specifically, the structure of the rotating body 1 can be that a rotating shaft is fitted outside the central shaft column, a fixed horizontal rod shaft is set on this rotating shaft and connected to a vertical rod shaft, and a vertical blade (i.e., the second blade component 18) is connected to the vertical rod shaft. The axis of rotation of the second blade component 18 is the vertical rod shaft. The first blade component 2 is set on the horizontal rod shaft, and the horizontal rod shaft provides the axis of rotation of the first blade component 2. At this time, the horizontal rod shaft plays a role in limiting the second blade component 18, similar to the blocking effect of the first limiting part 3 on the first blade component 2. The horizontally arranged first blade component 2 and the vertically arranged second blade component 18, the two arrangement forms of blade components, can work together to form a process that causes the rotating shaft to rotate, thus completing the kinetic energy conversion.

[0144] Specifically, the fourth limiting part 19 can be any object, such as a block or plate, that can limit the second blade component 18.

[0145] In this embodiment, by providing the second blade component 18, the conversion of fluid energy can be further improved.

[0146] In one embodiment, as shown in Figures 30 and 31, a detection module 20 is provided on the rotating body 1. The detection module 20 is used to detect information such as the flow rate and direction of the fluid, and is connected to the intelligent control module of the fluid energy conversion device to control the operating parameters of the fluid energy conversion device.

[0147] In one embodiment, as shown in Figures 21, 26 and 27, the fluid energy conversion device further includes a speed regulating device, a generator, a battery, a power output port and a bracket, etc. The rotating body 1 is connected to the motor drive, and the bracket can be a folding bracket for easy storage and carrying. The rotating body 1 is rotatably connected to the bracket, and the bracket is used to fix the rotating body 1 or the housing 9.

[0148] In one embodiment, as shown in Figures 7 and 31, multiple rotating bodies 1 are provided, and the multiple rotating bodies 1 are spaced apart along the axial direction of the rotating bodies 1. Any two adjacent rotating bodies 1 rotate in opposite directions, that is, they rotate coaxially to balance the torque.

[0149] According to an embodiment of this application, another aspect provides an engineering machine, including: a fluid energy conversion device and a generator assembly as described in any of the above embodiments, wherein the rotating body 1 is drive-connected to the input shaft of the generator.

[0150] Specifically, engineering machinery includes equipment with power generation capabilities, such as hydroelectric generator sets and wind turbine generator sets; there are also other applications besides power generation, such as directly driving energy storage equipment to avoid secondary conversion; and even directly driving vehicles and ships, etc.

[0151] In this embodiment, since the engineering machinery includes a fluid energy conversion device and has the same technical effect as the fluid energy conversion device, it will not be described in detail here.

[0152] As shown in Figures 33 and 34, which correspond to the schematic diagrams of the embodiments shown in Figures 35 and 38 respectively, the blades can be arranged vertically. Figure 33 is a back view of the embodiment facing the fluid kinetic energy; Figure 34 is a diagram of a multi-blade combination that can operate continuously. The rotating body 1a can be structured such that a central shaft column 101a is fitted with a rotatable rotating shaft 102a, on which a laterally extending rod shaft 7a is fixedly mounted. The laterally extending rod shaft 7a constitutes a connecting assembly 3a, which is then connected to a vertically extending rod shaft 7b. At least one vertically extending blade component 2a is mounted on this vertically extending rod shaft 7b as the blade axis (i.e., the blade's rotation axis). A rotatable connecting bearing 5a is connected to the narrow side of the plane of the vertically arranged blade component 2a, dividing the plane of the vertically arranged blade component 2a into a narrow section and a wide section. This allows the blade component 2a to rotate freely around the vertically extending rod shaft 7b, which serves as the blade axis, and is hindered by the laterally extending rod shaft 7a. Its rotation range is 180°, and the blades opposite it (or those at other angles) are rotated by the same structure. As shown in Figure 34, taking wind energy conversion as an example, when rotating on the downwind working surface, the blade component 2a... At the beginning position 43a, the blade component 2a is subjected to wind force and is blocked by the laterally extending shaft 7a, which pushes the laterally extending shaft 7a to move backward. When the blade component 2a rotates to the end position 44a, the blade component 2a is more easily lifted by the wind and flips itself. However, after the blade quickly flips 180°, its narrow face is still blocked by the laterally extending shaft 7a, causing the blade component 2a to still be pushed backward by the wind force. When the blade component 2a rotates to the windward side, whether at the beginning position 41a or the end position 42a, it can be subjected to wind force. The plane of the blade component 2a naturally remains parallel to the wind direction, with the narrow face in front and the wide face behind. Therefore, the blade generates less resistance and runs against the wind. As a result, the rotation shaft 102a of the entire rotating body 1a rotates due to torque imbalance. Then, through the transmission device, it drives the application equipment to complete the kinetic energy conversion. This process is also applicable to the conversion and utilization of water energy and other fluids.

[0153] Some further embodiments of this application are described below with reference to Figures 35 to 38.

[0154] According to an embodiment of this application, a fluid energy conversion device is provided, as shown in FIG35, including a rotating body 1a, at least one blade component 2a and at least one connecting component 3a, the specific scheme of which is as follows.

[0155] It should be noted that the fluid energy conversion device provided in this application can be a device that uses the fluid energy of water for energy conversion, a device that uses the fluid energy of wind for energy conversion, or any other energy conversion device with fluid energy. The arrow in Figure 35 indicates the direction of fluid energy flow. As shown in Figure 35, the rotating body 1a is used to output rotational mechanical energy. Specifically, the rotating body 1a can be a solid shaft, such as a metal shaft, as shown in Figures 35 and 38. The rotating body 1a can also be a hollow tube, such as a steel pipe or a plastic pipe. It can also be other objects that can rotate, and their shape is not necessarily regular, such as a column with a square or polygonal cross-section.

[0156] As shown in Figure 35 or Figure 38, the number of first blade components 2a can be one or more. The first blade component 2a can be any one of metal blades, plastic blades, composite material blades (such as blades with an internal metal skeleton and an external lightweight high-strength material, such as carbon fiber composites, especially at the interface, such as the slot or the shaft connection, which can be a metal component), preferably high-strength plastic blades, carbon fiber blades, lightweight alloy blades, etc. The blade component 2a has a first axis 23a and a first surface 21a and a second surface 22a arranged opposite to each other. The first axis 23a is parallel to the axial distance of the rotating body 1a. At least one first limiting groove 221a is provided on the second surface 22a. Specifically, the first limiting groove 221a can be straight or curved, and its cross-section can be rectangular, semi-circular, etc. Preferably, the first limiting groove 221a is straight and its cross-section is semi-circular.

[0157] Specifically, the cross-section of the blade component 2a along the first axis 23a can be spindle-shaped, i.e. pointed at both ends. Preferably, the thickness of the blade component 2a is greatest at the first axis 23a.

[0158] The first axis 23a and the axis of the rotating body 1a can be set parallel or at an angle. The angle is preferably between 0° and 30°. Specifically, the angle between the first axis 23a and the axis of the rotating body 1a is any one or any two of the following values: 5°, 10°, 15°, 20°, 25° and 30°.

[0159] As shown in Figure 35, the connecting component 3a can be a rod, frame, etc., and can be made of metal or alloy. One end of the connecting component 3a is rotatably connected to the blade component 2a around the first axis 23a via a rotating shaft. The other end of the connecting component 3a is connected to the rotating body 1a by welding or bolting, or other methods such as bonding. For example, high-strength adhesive can be used for bonding.

[0160] Specifically, as shown in Figure 35, the part of the connecting component 3a that mates with the first limiting groove 221a is adapted to the shape of the first limiting groove 221a.

[0161] As shown in Figure 35, the connecting component 3a engages with the lower limit of the first limiting groove 221a, so that the first surface 21a is in the flow-facing state. Specifically, during the revolution of the blade component 2a around the axis of the rotating body 1a and the rotation of the blade component 2a around the first axis 23a, a part of the connecting component 3a enters the first limiting groove 221a to prevent the blade component 2a from rotating.

[0162] More specifically, there are multiple blade components 2a and multiple connecting components 3a. Multiple blade components 2a can be rotatably arranged on one connecting component 3a around the first axis 23a. Alternatively, as shown in Figure 35, there are multiple blade components 2a and multiple connecting components 3a, with one blade component 2a rotatably arranged on one connecting component 3a around the first axis 23a. Preferably, there are multiple blade components 2a and multiple connecting components 3a, with one blade component 2a rotatably arranged on one connecting component 3a around the first axis 23a.

[0163] It should be noted that the center of gravity of the blade component 2a does not coincide with the first axis 23a. This scheme is used when the rotation axis is arranged horizontally. Alternatively, as shown in Figures 35 and 37, the areas of the portions of the blade component 2a located on both sides of the first axis 23a are different. Each blade component 2a has its own first axis 23a. This situation can be applied to situations where the rotation axis is arranged in any direction.

[0164] Operating principle of the fluid energy conversion device: As shown in Figure 35, the connecting component 3a can limit the blade component 2a to be in the face of the first surface 21a. By using the force of the fluid on the first surface 21a, the blade component 2a is driven to revolve around the axis of the rotating body 1a, thereby driving the rotating body 1a to rotate and output rotational mechanical energy.

[0165] As shown in Figure 35, when the blade component 2a is subjected to fluid energy, the connecting assembly 3a disengages from the first limiting groove 221a and rotates 180° (at this time, the first surface 21a of the blade component 2a may not be parallel to the fluid direction and may have a certain angle). The second surface 22a on the blade component 2a, which is opposite to the first surface 21a, is in the flow-facing state. Subsequently, the first surface 21a and the second surface 22a of the blade component 2a are always in a state parallel or nearly parallel to the fluid direction under the support of fluid energy. This reduces the effective contact area between the second surface 22a and the fluid, thereby reducing the force exerted by the fluid on the blade component 2a and thus reducing the resistance to the rotating body 1a.

[0166] As shown in Figure 35, the connecting component 3a then enters the first limiting groove 221 to limit the blade component 2a and prevent the blade component 2a from rotating relative to the connecting component 3a. As the blade component 2a continues to revolve around the axis of the rotating body 1a, the blade component 2a is in the flow-facing state. During the flow-facing process, the blade component 2a may suddenly flip over due to the instability of the fluid and start the next cycle.

[0167] In this embodiment, as shown in Figures 35 to 38, by providing a first limiting groove 221a on the blade component 2a, the blade component 2a and the connecting assembly 3a are rotatably connected around the first axis 23a. The connecting assembly 3a is connected to the rotating body 1a. Through the cooperation of the connecting assembly 3a and the first limiting groove 221a, the first surface 21a of the blade component 2a is in a flow-facing state, thereby providing driving force for the rotating body 1a. As the blade component 2a revolves around the axis of the rotating body 1a, the second surface 22a of the blade component 2a (may suddenly) be in a flow-facing state. The fluid acts on the second surface 22a, and the blade component 2a rapidly rotates around the first axis 23a. When the blade rotates 180°, during the process of facing the flow, the blade component 2a may suddenly flip over due to the instability of the fluid (during the process of facing the flow, the first surface 21a of the blade component 2a always has an angle between the direction of the fluid energy and the direction of the fluid energy, which is between 0° and 90° and 180°. If the blade does not flip over during the process, it will definitely flip over naturally at the end). At this time, under the action of the fluid, the first surface 21a and the second surface 22a of the blade component 2a are always in a state that is close to parallel to the direction of the fluid, thereby reducing the force of the fluid on the blade component 2a, thereby reducing the resistance of the blade component 2a to the rotating body 1a, thereby improving the conversion efficiency of fluid energy and further improving the utilization rate of fluid energy.

[0168] Meanwhile, as shown in Figure 35, the first limiting groove 221a can cooperate with the connecting component 3a, thereby increasing the contact area between the blade component 2a and the connecting component 3a when the blade component 2a is in the upstream state, improving the stability of the blade component 2a relative to the connecting component 3a, reducing the swaying amplitude or deformation of the blade component 2a relative to the connection, and thus improving the conversion and utilization rate of fluid energy.

[0169] In a specific embodiment, as shown in FIG37, the portions of the first surface 21a located on both sides of the first axis 23a are the first part 211a and the second part 212a. The area of ​​the first part 211a is larger than the area of ​​the second part 212a. Along the direction perpendicular to the first surface 21a, the orthographic projection of the first limiting groove 221a on the first surface 21a is located on the first part 211a.

[0170] In specific use, as shown in Figure 35, when the first surface 21a is in the flow-facing state, since the area of ​​the first part 211a is larger than the area of ​​the second part 212a, the first limiting groove 221a can be in a cooperating state with the connecting component 3a to limit the blade component 2a and prevent the blade component 2a from rotating around the first axis 23a.

[0171] In this embodiment, as shown in Figures 35 and 37, a first part 211a and a second part 212a located on both sides of the first axis 23a are used. The area of ​​the first part 211a is larger than that of the second part 212a. Along the direction perpendicular to the first surface 21a, the orthographic projection of the first limiting groove 221a on the first surface 21a is located on the first part 211a. This allows the force exerted by the fluid on the first part 211a to be greater than the force exerted by the fluid on the second part 212a when the first surface 21a of the blade component 2a is in the flow-facing state. The first limiting groove 221a can be used for limiting engagement with the connecting component 3a. The structure is simple and easy to manufacture.

[0172] In one embodiment, as shown in Figures 35 and 36, a second limiting groove 222a is also provided on the second surface 22a. Specifically, the second limiting groove 222a can be straight or curved, and its cross-section can be rectangular, semi-circular, or other shapes. Preferably, the second limiting groove is straight and its cross-section is semi-circular. Along the direction perpendicular to the first surface 21a, the orthographic projection of the second limiting groove 222a on the first surface 21a is located on the second part 212a. The shape of the second limiting groove 222a is adapted to the shape of the connecting component 3a.

[0173] As shown in Figures 35 and 36, the connecting component 3a can be matched with the second limiting groove 222a to limit the first surface 21a to be parallel to the fluid flow direction.

[0174] In specific use, as shown in Figure 35, when the first surface 21a of the blade component 2a changes from the flow-facing state to the non-flow-facing state, the blade component 2a will rotate 180°. The second limiting groove 222a can limit the blade component 2a to prevent the rotation of the blade component 2a from exceeding 180°, so that the first surface 21a is in the flow-facing state, thereby increasing the resistance of the fluid to the blade component 2a revolving around the rotating body 1a, thereby reducing the conversion and utilization rate of fluid energy.

[0175] Meanwhile, as shown in Figure 35, the second limiting groove 222a can cooperate with the connecting component 3a to increase the contact area between the blade component 2a and the connecting component 3a, improve the stability of the blade component 2a relative to the connecting component 3a, and reduce the swaying amplitude or deformation of the blade component 2a relative to the connection, thereby improving the conversion and utilization rate of fluid energy.

[0176] In one embodiment, as shown in FIG38, the edge of the second part 212a is provided with an extension 2121a. Specifically, the extension 2121a can be of any shape, such as square, triangular, trapezoidal, or a streamlined shape conforming to fluid dynamics. The second limiting groove 222a extends to and through the extension 2121a. In specific use, as shown in FIG38, the provision of the extension 2121a can further increase the contact area between the second part 212a and the connecting component 3a, improve the stability of the blade component 2a relative to the connecting component 3a, and reduce the swaying amplitude or deformation of the blade component 2a relative to the connection, thereby improving the conversion and utilization rate of fluid energy.

[0177] In one embodiment, as shown in FIG38, the extension 2121a is tapered in the direction away from the blade component 2a, such as trapezoidal or triangular, which can reduce the material used in the blade component 2a and reduce the cost of the blade component 2a.

[0178] In one embodiment, as shown in FIG36, a reinforcing layer 223a is embedded in both the first limiting groove 221a and the inner wall surface of the first limiting groove 221a. Specifically, the reinforcing layer 223a can be a profile that matches the groove surface of the first limiting groove 221a or the groove surface of the second limiting groove 222a to enhance the strength of the first limiting groove 221a or the second limiting groove 222a and to enhance the service life of the blade component 2a.

[0179] The reinforcing layer 223a can be a metal layer, such as an iron sheet layer or an aluminum sheet layer, or it can be another wear-resistant material layer, such as a wear-resistant plastic sheet layer.

[0180] In one embodiment, as shown in FIG36, at least one buffer sheet 224a is provided on the inner wall surface of the first limiting groove 221a and the second limiting groove 222a; specifically, the buffer sheet 224a can be a sheet body with elastic compression deformation, such as a rubber sheet or a polyurethane foam block. At least one buffer ring 31a is provided on the connecting assembly 3a; specifically, the buffer ring 31a is a ring body with elastic compression deformation, such as a rubber ring or a polyurethane foam ring.

[0181] In this embodiment, as shown in FIG36, by providing a buffer sheet 224a and a buffer ring 31a, the contact impact force between the connecting component 3a and the first limiting groove 221a or the second limiting groove 222a can be reduced, thereby reducing abnormal noise and vibration. In some embodiments not shown, the buffer sheet 224a can be a magnetic sheet, and a corresponding magnetic sheet can also be provided on the connecting component 3a to repel the magnetic sheet located in the first limiting groove 221a or the second limiting groove 222a, forming a buffer structure. Specifically, the magnetic sheet can be an electromagnet.

[0182] In one embodiment, as shown in Figures 35 and 38, there are multiple blade components 2a and multiple connecting components 3a. The multiple blade components 2a are arranged circumferentially around the rotating body 1a at intervals, and the multiple connecting components 3a are arranged circumferentially around the rotating body 1a at intervals, and are connected to the multiple blade components 2a one-to-one.

[0183] In this embodiment, as shown in Figures 35 and 38, by setting multiple blade components 2a and multiple connecting components 3a, multiple driving forces are formed on the rotating body 1a, thereby increasing the rotational speed and output torque of the rotating body 1a.

[0184] In one embodiment, as shown in Figures 35 and 38, the connecting component 3a includes a plurality of connectors 32a. Specifically, the connectors 32a are metal rods. The plurality of connectors 32a are arranged at intervals along the axial direction of the rotating body 1a, and are all rotatably connected to the blade component 2a about the first axis 23a through a shaft. The blade component 2a is provided with a plurality of first limiting grooves 221a at intervals along the axial direction of the rotating body 1a, so as to perform corresponding limiting cooperation with the plurality of connectors 32a.

[0185] Specifically, as shown in Figures 35 and 38, multiple connectors 32a in each connecting assembly 3a can be connected by connecting rods to enhance the deformation resistance of the connecting assembly 3a.

[0186] In this embodiment, as shown in Figures 35 and 38, the connecting assembly 3a includes multiple connecting members 32a. These connecting members 32a are spaced apart along the axial direction of the rotating body 1a and are all rotatably connected to the blade component 2a about a first axis 23a via a shaft. The blade component 2a is provided with multiple first limiting grooves 221a spaced apart along the axial direction of the rotating body 1a to provide corresponding limiting engagement with the connecting members 32a, thereby increasing the contact area between the blade component 2a and the connecting assembly 3a and enhancing the stability of the blade component 2a relative to the connecting assembly 3a. In one embodiment, as shown in Figure 38, a detection module 4a is provided on the rotating body 1a. The detection module 4a is used to detect information such as the flow velocity and direction of the fluid and is connected to the control module of the fluid energy conversion device to control the operating parameters of the fluid energy conversion device.

[0187] The rotating body 1a has a central shaft sleeved with a rotatable rotating shaft, and a metal rod-shaped connector 32a is fixedly mounted on this rotating shaft. Then, the blade shaft of the vertically extending blade component 2a is connected. The blade shaft provides the axis of rotation for the blade component 2a. The blade component 2a can enclose the vertically extending blade shaft internally, and at the junction, the horizontally extending rod-shaped connector 32a is received by a first limiting groove 221a. During operation, the connector 32a and the first limiting groove 221a undergo self-rotation and collide at their ends. Buffer rings 31a are installed at each contact point; these rings can be made of adhesive. Pads are used to reduce vibration and noise (specific applications may include appropriate buffers, shock absorbers, etc.), which strengthens and stabilizes the function of each component. The diagram below shows the omnidirectional blades, which allow it to operate continuously in any wind direction. A detection module 4a is set at the top of the central shaft for intelligent control technology. The first limiting groove 221a can be extended on the narrow side to the same length as the wide side, which increases the torque on the narrow side of the blade component 2a, protects the structure, and enhances stability. An extension 2121a is set at the corresponding position of the blade to reinforce it and distribute the force evenly.

[0188] According to an embodiment of this application, in another aspect, an engineering machinery is provided, including the fluid energy conversion device in any of the above embodiments. Specifically, the engineering machinery is equipment with power generation function, such as a hydroelectric generator set, a wind turbine generator set, etc.

[0189] In this embodiment, since the engineering machinery includes a fluid energy conversion device and has the same technical effects as the fluid energy conversion device, it will not be described in detail here. Although embodiments of this application have been described with reference to the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A fluid energy conversion device, characterized in that, include: Rotating body (1), the rotating body (1) is used to output rotational mechanical energy; At least one first blade component (2), the first blade component (2) having a first surface (21) and a first axis, the first blade component (2) rotating about the first axis and connected to the rotating body (1), the first axis being set at an angle to the axial direction of the rotating body (1); At least one first limiting part (3) is provided, which can limit the first blade component (2) so that the first surface (21) is in the flow-facing state.

2. The fluid energy conversion device according to claim 1, characterized in that, The first blade component (2) has an offset rotating shaft portion (22) at its first end along the first axis. The rotating shaft portion (22) rotates around the first axis and is connected to the rotating body (1). The first limiting portion (3) is used to limit the portion at the first end that is away from the rotating shaft portion (22).

3. The fluid energy conversion device according to claim 2, characterized in that, It also includes at least one second limiting part (4), and the first blade component (2) rotates between the first limiting part (3) and the second limiting part (4).

4. The fluid energy conversion device according to claim 3, characterized in that, It also includes a linkage (5), the number of first blade components (2) is at least two, the linkage (5) is rotatably connected to the rotating body (1) around the first axis, the linkage (5) is connected to the first blade components (2) at both ends along the first axis, the two first blade components (2) on the linkage (5) are centrally symmetrically arranged, and the center of symmetry of the two first blade components (2) is located on the rotation axis of the linkage (5), and the first limiting part (3) and the second limiting part (4) are located on the linkage (5).

5. The fluid energy conversion device according to claim 4, characterized in that, The first limiting part (3) is provided with a first buffer (31), and the second limiting part (4) is provided with a second buffer (41).

6. The fluid energy conversion device according to claim 5, characterized in that, A third buffer (11) is provided at the part of the rotating body (1) that contacts the first buffer (31), and a fourth buffer (12) is provided at the part of the rotating body (1) that contacts the second buffer (41). The first buffer (31), the second buffer (41), the third buffer (11) and the fourth buffer (12) are all equipped with magnetic components. The first buffer (31) is disposed in opposition to the third buffer (11), and the second buffer (41) is disposed in opposition to the fourth buffer (12).

7. The fluid energy conversion device according to claim 3, characterized in that, It also includes a synchronizer (6), which comprises: A first shaft (61) is rotatably mounted on the rotating body (1), and a first meshing tooth (611) and a first limiting part (3) are provided on the first shaft (61); The second shaft (62) is rotatably mounted on the rotating body (1), and the second shaft (62) is provided with a second meshing tooth (621) and a second limiting part (4); The intermediate wheel (63) is rotatably mounted on the rotating body (1) and meshes with both the first meshing tooth (611) and the second meshing tooth (621); The first blade component (2) is connected to at least one of the first shaft (61) and the second shaft (62).

8. The fluid energy conversion device according to any one of claims 4 to 6, characterized in that, It also includes a third limiting part (7). The first blade component (2) includes a first blade body (23), a first connecting shaft (24), and a second connecting shaft (25). The first blade component (2) has a second axis. The first connecting shaft (24) is rotatably connected to the first blade body (23). The first connecting shaft (24) and the second connecting shaft (25) are rotatably connected around the second axis. The second connecting shaft (25) is fixedly connected to the rotating body (1). The third limiting part (7) can restrict the first connecting shaft (24) from rotating synchronously with the linkage (5). The second axis is perpendicular to the first axis. Alternatively, it may include a third limiting part (7), on which a third connecting shaft (13) is rotatably provided along the second axis, the rotating shaft part (22) is rotatably connected to the third connecting shaft (13), and the third limiting part (7) can restrict the axis of the rotating shaft part (22) from being perpendicular to the axis of the rotating body (1), wherein the second axis is perpendicular to the axis of the rotating body (1).

9. The fluid energy conversion device according to claim 8, characterized in that, The rotating body (1) has a housing (8), and the housing (8) is provided with at least one housing cavity (81). The housing cavity (81) is provided with an opening (82) and a limiting ring (83). The limiting ring (83) is rotatable around the rotating body (1). The limiting ring (83) is provided with a notch (832) and a limiting groove (831). The notch (832) connects the opening (82) and the limiting groove (831). In this configuration, the first blade component (2) is located inside the accommodating cavity (81) in the folded state; in the unfolded state, at least a portion of the first blade component (2) is located outside the accommodating cavity (81); the limiting ring (83) is in a first position state, which can limit the rotation of the first blade component (2) around the second axis; and in the second position state, the limiting groove (831) allows the first blade component (2) to switch between the unfolded and folded states through the notch (832).

10. The fluid energy conversion device according to claim 9, characterized in that, It also includes a storage housing (9), which is coaxially sleeved on the rotating body (1), and the accommodating shell (8) can slide along the axial direction of the rotating body (1) and is located inside the storage housing (9).

11. The fluid energy conversion device according to any one of claims 1 to 3, characterized in that, It also includes a filter cover (10), there are multiple first blade components (2) and they are located inside the filter cover (10). The multiple first blade components (2) are arranged in two first blade groups. Each first blade group includes multiple first blade components (2). The multiple first blade components (2) in each first blade group are arranged circumferentially at intervals along the rotating body (1). The two first blade groups are arranged axially at intervals along the rotating body (1). The first blade component (2) includes a first part (14) and a second part (15) located on both sides of the first axis, wherein the area of ​​the first part (14) is larger than the area of ​​the second part (15). In any one of the first blade groups, a counterweight (16) is provided on the second part (15) of the first blade component (2), so that the second part (15) on the first blade component (2) in the two first blade groups is positioned close to each other.

12. The fluid energy conversion device according to any one of claims 1 to 6, characterized in that, At least one rotating rod (17) is provided on the rotating body (1), the rotating rod (17) is arranged parallel to the rotating body (1) at intervals, at least one second blade component (18) is rotatably provided on the rotating rod (17), the second blade component (18) has a third surface, and at least one fourth limiting part (19) is provided on the rotating rod (17). The fourth limiting part (19) can limit the second blade component (18) so that the third surface is in the flow-facing state; And / or, multiple rotating bodies (1) are provided, and the multiple rotating bodies (1) are spaced apart along the axial direction of the rotating body (1), and the rotation directions of any two adjacent rotating bodies (1) are opposite.

13. An engineering machinery, characterized in that, include: The fluid energy conversion device as described in any one of claims 1 to 12.

14. A fluid energy conversion device, characterized in that, include: A rotating body (1a) is used to output rotational mechanical energy; At least one blade component (2a) has a first axis (23a) and a first surface (21a) and a second surface (22a) disposed opposite to each other. The first axis (23a) is axially spaced from the rotating body (1a), and at least one first limiting groove (221a) is provided on the second surface (22a). At least one connecting component (3a), one end of which is rotatably connected to the blade component (2a) about the first axis (23a), and the other end of which is connected to the rotating body (1a); The connecting component (3a) engages with the lower limit of the first limiting groove (221a) to make the first surface (21a) be in a flow-facing state.

15. The fluid energy conversion device according to claim 14, characterized in that, The portions of the first surface (21a) located on both sides of the first axis (23a) are the first part (211a) and the second part (212a). The area of ​​the first part (211a) is larger than the area of ​​the second part (212a). Along the direction perpendicular to the first surface (21a), the orthographic projection of the first limiting groove (221a) on the first surface (21a) is located on the first part (211a).

16. The fluid energy conversion device according to claims 15 to 16, characterized in that, The second surface (22a) is also provided with a second limiting groove (222a). Along the direction perpendicular to the first surface (21a), the orthographic projection of the second limiting groove (222a) on the first surface (21a) is located on the second part (212a); wherein, the connecting component (3a) can be limited and cooperated with the second limiting groove (222a) to make the first surface (21a) parallel to the fluid flow direction.

17. The fluid energy conversion device according to claim 16, characterized in that, The second part (212a) has an extension (2121a) on its edge, and the second limiting groove (222a) extends to the extension (2121a) and penetrates the extension (2121a).

18. The fluid energy conversion device according to claim 17, characterized in that, The extension (2121a) is tapered in the direction away from the blade component (2a).

19. The fluid energy conversion device according to any one of claims 16 to 18, characterized in that, The inner wall surfaces of the first limiting groove (221a) and the first limiting groove (221a) are both embedded with a reinforcing layer (223a).

20. The fluid energy conversion device according to any one of claims 16 to 18, characterized in that, At least one buffer piece (224a) is provided on the inner wall surface of the first limiting groove (221a) and the second limiting groove (222a); and / or, at least one buffer ring (31a) is provided on the connecting assembly (3a).

21. The fluid energy conversion device according to any one of claims 14 to 18, characterized in that, There are multiple blade components (2a) and multiple connecting assemblies (3a). The multiple blade components (2a) are arranged circumferentially around the rotating body (1a), and the multiple connecting assemblies (3a) are arranged circumferentially around the rotating body (1a) and are connected to the multiple blade components (2a) one by one.

22. The fluid energy conversion device according to any one of claims 14 to 18, characterized in that, The connecting assembly (3a) includes a plurality of connectors (32a), which are arranged at axial intervals along the rotating body (1a) and are all rotatably connected to the blade component (2a) about the first axis (23a). The blade component (2a) is provided with a plurality of first limiting grooves (221a) spaced apart along the axial direction of the rotating body (1a) to correspond and limit the fit with the plurality of connecting parts (32a).

23. An engineering machinery, characterized in that, include: The fluid energy conversion device as described in any one of claims 14 to 22.

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