Fluid Energy Extraction Device

Abstract

The present invention relates to a fluid energy extraction device, comprising a base member, a rudder plate, a cross frame, a first plate, a second plate and an impeller; the rudder plates are arranged on both sides of the base member; the first plate and the second plate are arranged between the rudder plates to form a trumpet-shaped structure; the second plate is pivotally connected to the base member, and the first plate is pivotally connected to the cross frame; the impeller comprises a transverse axis and blades, and the blades comprise a first surface and a second surface; the impeller is transversely arranged between the two rudder plates, and its two ends respectively extend out of the corresponding rudder plates; the impeller part is located in the small mouth side of the trumpet-shaped structure, and the surfaces of the blades located therein facing the large mouth side of the trumpet-shaped structure are all the first surfaces; the device adopts a structure of two seesaws, which can increase the flow velocity of the fluid, gather its energy, and improve the efficiency of energy extraction; at the same time, when the fluid flow velocity is relatively large, the two seesaw structures will undergo pivoting motion, reducing the impact of the high-flow velocity fluid on the entire structure, thereby improving the service life and safety of the device.

Description

Technical Field

[0001] The present invention relates to the field of energy extraction, and in particular to a fluid energy extraction device. Background Art

[0002] There are currently many designs that extract fluids, such as wind, flowing water, tides, etc., through the rotation of impellers to generate electricity, drive device operation, or convert them into other forms of energy for utilization and storage. However, these designs generally have the problem of insufficient energy extraction efficiency, which makes it difficult to drive the impeller when the fluid flow rate is low, so less energy can be extracted; in order to increase the amount of energy extracted, the current conventional method is to increase the size of the impeller, but this not only increases the production cost, but also adds trouble to transportation and installation. There are currently designs that set up bell mouths to gather fluids, but the safety and stability are not enough; if the fluid flow rate is too high, the device may be damaged. Summary of the invention

[0003] The present invention overcomes the deficiencies of the prior art and provides a fluid energy extraction device with high energy extraction efficiency and good safety.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows: a fluid energy extraction device is provided, characterized in that it includes a base member, a rudder plate, a cross frame, a first plate, a second plate and an impeller; the rudder plates are respectively arranged on both sides of the base member and extend upward from the base member at the same time; the first plate and the second plate are arranged up and down between the rudder plates and form a trumpet-shaped structure; at least a part of the cross frame is arranged between the two rudder plates; the second plate is pivotally connected to the base member, and the first plate is pivotally connected to the cross frame; the first plate or the second plate or both are connected to the corresponding impeller through a bracket respectively; the impeller is a columnar type, including a transverse axis and a plurality of blades, and the blades include a first surface and a second surface; the impeller is transversely arranged between the two rudder plates, and its two ends extend out of the corresponding rudder plates respectively; the impeller is partially located in the small mouth side of the trumpet-shaped structure, and the surfaces of the blades located therein facing the large mouth side of the trumpet-shaped structure are all the first surface or the second surface; one of the first plate, the second plate, the combination of the first plate and the blocking member, and the combination of the second plate and the blocking member blocks the part of the impeller that is not located in the trumpet-shaped structure from the side close to the large mouth of the trumpet-shaped structure.

[0005] As a preferred embodiment, the transverse axis is a hollow structure; the blade is a long plate structure with an arc-shaped cross-section; the length direction of the blade is parallel to the axial direction of the transverse axis, and its long side is fixed to the side of the transverse axis; the first surface of the blade is a concave arc surface, and the second surface is a convex arc surface; the surfaces of the blades located in the trumpet-shaped structure facing the large mouth of the trumpet-shaped structure are all first surfaces.

[0006] As a more preferred solution, the impeller is further provided with a plurality of reinforcement members, each of which is respectively connected to two adjacent blades and the transverse axis therebetween; end caps are also provided at both ends of the impeller, which are connected to all blades from the side and prevent the blades from being exposed on their outside.

[0007] As a preferred solution, the blocking member is an arc-shaped baffle plate, which is arranged on the surface of the first plate or the second plate located outside the trumpet-shaped structure.

[0008] As a preferred solution, it also includes a connecting component connected to the fixed structure; the connecting component and the base member are rotatably connected.

[0009] As a more preferred solution, the connecting component is a vertical rod, which is inserted into the base member from bottom to top and is rotatably connected thereto; two rudder plates are provided, which are vertically arranged on both sides of the base member; and the cross frame is a longitudinal structure, with its two ends respectively arranged on the upper part of the rudder plates on both sides.

[0010] As a more preferred solution, a counterweight box is provided at the front end of the first plate and the front end of the second plate.

[0011] As a more preferred solution, the rudder plate is provided with a notch for the two ends of the impeller to pass through.

[0012] As a more preferred solution, only one impeller is provided and is connected to the first plate.

[0013] As a preferred solution, a pulley is also provided on the transverse axis of the impeller and is drivably connected to an energy storage conversion device; the energy storage conversion device is provided on the first plate or the second plate connected to the corresponding impeller.

[0014] The beneficial technical effect of the present invention mainly lies in: providing a fluid energy extraction device with high energy extraction efficiency and good safety.

[0015] (1) The present invention can be used to extract wind energy, water flow energy, tidal energy, etc. and convert them into electrical energy, driving energy or other forms of energy. The present invention adopts a two-seesaw structure, which can increase the flow rate of the fluid and gather its energy; thus, even at a lower flow rate, the fluid can drive the impeller well, thereby improving the efficiency of energy extraction; at the same time, when the fluid flow rate is high, the two seesaw structures will pivot, making the large mouth of the trumpet-shaped structure smaller and the small mouth larger, thereby reducing the impact of the high-flow fluid on the entire structure and improving the safety and service life of the device.

[0016] (2) The present invention ensures that the fluid only impacts the surface that has a driving effect on the impeller by setting the impeller position, while the surfaces that have a hindering effect are blocked, thereby reducing resistance and improving the driving efficiency of the impeller by the fluid.

[0017] (3) The design of the impeller of the present invention that the two ends of the impeller extend out of the notch of the corresponding rudder plate respectively reduces the gap that may be entangled by foreign objects (such as water plants in the water, floating objects blown up by the wind, etc.) in the conventional design, increases the difficulty of the impeller being entangled, thereby increasing the service life of the impeller and reducing the difficulty of its maintenance; at the same time, the end caps are arranged at both ends of the impeller to reduce the possibility of entanglement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic structural diagram of a preferred embodiment of the present invention.

[0020] Figure 2 It is a schematic top view of a preferred embodiment of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the impeller of the present invention.

[0022] Figure 4 yes Figure 3 Schematic diagram of the cross section at AA in the middle. DETAILED DESCRIPTION

[0023] The present invention will now be further described in detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention. It should be noted that the words "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0024] like Figure 1-4 As shown, a fluid energy extraction device includes a base member 1, a rudder plate 2, a cross frame 3, a first plate 4, a second plate 5, an impeller 6, and a connecting component 7.

[0025] The base member 1 is a plate-like structure and is arranged horizontally; two rudder plates 2 are arranged in parallel, and the two rudder plates are respectively arranged vertically on both sides of the base member 1 and extend upward from the base member 1; the cross frame 3 is a longitudinal structure, and its two ends are respectively arranged on the upper part of the corresponding rudder plates 2, so that the middle part of the cross frame 3 is located above the two rudder plates 2; preferably, the cross frame 3 and the two rudder plates 2 are arranged vertically.

[0026] The first plate 4 and the second plate 5 are arranged between the two rudder plates 2, and the two are arranged up and down to form a trumpet-shaped structure; the second plate 5

[0027] The first plate 4 is pivotally connected to the upper surface of the base member 1 through the pivot base 12, and the two form a seesaw structure;

[0028] The base 12 is pivotally connected to the lower surface of the cross frame 3, and the two also constitute a seesaw structure; preferably, the pivot base 12 is provided with a limit block 121 to ensure that the first plate 4 and the second plate 5 will not collide with each other due to swinging, causing damage to the device, even in extreme cases where the flow rate and intensity of the fluid suddenly become very large.

[0029] The impeller 6 is cylindrical, including a transverse axis 61 and a plurality of blades 62; the transverse axis 61 is a hollow structure, so that the overall weight can be reduced; each blade 62 is a long plate structure with an arc-shaped cross section; the length direction of the blade 62 is parallel to the axis of the transverse axis 61, and its long side is fixed to the side of the transverse axis 61; a plurality of blades 62 are evenly arranged along the circumference of the transverse axis 61; the blades 62 each include a first surface 621 and a second surface 622, wherein the first surface 621 is a concave arc surface, and the second surface 622 is a convex arc surface. At the same time, end caps 65 are also provided at both ends of the impeller 6, which are in a bowl-shaped structure; the bowl edge of the bowl-shaped structure is connected to the tips of all blades 62 from the side, so that all blades 62 are covered from the side, and the blades 62 are not exposed on the outside; the two ends of the transverse axis 61 respectively pass through the bowl bottom part of the bowl-shaped structure of the end cap 65 on the corresponding side. In addition, as a preference, a plurality of reinforcement members 63 are provided on the impeller 6; each reinforcement member 63 is a sheet-like structure and is perpendicular to the transverse axis 61, and two adjacent blades 62 and the transverse axis 61 therebetween are connected to the corresponding reinforcement member 63; this arrangement can ensure the strength of the impeller 6 and prevent the blades 62 from bending during rotation.

[0030] The impeller 6 is transversely arranged between the two rudder plates 2, and the two ends of the impeller 6 extend out of the corresponding notch of the rudder plate 2 respectively; specifically, the impeller 6 is transversely arranged at the rear side of the first plate 4 (the side with the large opening of the trumpet-shaped structure is the front, and the side with the small opening of the trumpet-shaped structure is the rear, the same below), and a bracket 8 is respectively arranged on the two sides of the first plate 4; one end of each bracket 8 is fixed to the side of the first plate 4, and the other end thereof is rotatably connected to the end of the horizontal axis 61 through a conventional structure. The design that the two ends of the impeller 6 extend out of the notch of the corresponding rudder plate 2 respectively can reduce the gap of the horizontal axis 61 of the impeller 6 in the conventional design to be entangled by foreign objects (such as water plants in the water, floating objects blown up by the wind, etc.), increase the difficulty of the impeller 6 being entangled, thereby reducing the possibility of the impeller 6 being entangled by foreign objects, increasing the service life of the impeller 6, and reducing the difficulty of its maintenance.

[0031] The impeller 6 is partially located inside the small mouth side of the trumpet-shaped structure, and the surfaces of the blades 62 therein facing the large mouth side of the trumpet-shaped structure are all first surfaces 621; at the same time, a blocking member 9 is provided on the upper surface of the first plate 4, and the blocking member 9 is an arc-shaped plate protruding forward; through the mutual cooperation between the first plate 4 and the blocking member 9, the part of the impeller 6 that is not located in the trumpet-shaped structure is blocked from the front side (i.e., close to the large mouth side of the trumpet-shaped structure).

[0032] The connecting component 7 is a vertical rod, the bottom end of which is arranged on a conventional fixed structure (such as a horizontal ground, a base, a workbench, etc.), and the top end of which is inserted into the base member 1 from bottom to top and is rotatably connected to it through a conventional structure; in order to ensure smooth rotation, a bearing is arranged between the connecting component 7 and the base member 1.

[0033] During operation, due to the arrangement of the rudder plates 2 on both sides, the fluid impacts the outer side thereof, so that the base member 1 and its upper structure rotate on the horizontal plane with the connecting member 7 as the rotating shaft, so that the large mouth of the trumpet-shaped structure faces the fluid; the fluid enters the trumpet-shaped structure from the large mouth, and drives the impeller 6 to rotate on its small mouth side; since the flow velocity of the fluid increases from the large mouth to the small mouth, its energy is gathered, so even at a lower flow velocity, it can drive the impeller 6 well, thereby improving the efficiency of the fluid driving the impeller 6. The arrangement of the pivotal connection between the first plate 4 and the second plate 5, when the flow velocity of the fluid is high, the first plate 4 and the second plate 5 will pivot, so that the large mouth of the trumpet-shaped structure becomes smaller and the small mouth becomes larger, thereby reducing the impact of the high-flow fluid on the entire structure. In addition, the position arrangement of the impeller 6 can ensure that the fluid only impacts the first surface 621 located below the first plate 4, which has a driving effect on the driving impeller 6, so that the impeller 6 rotates counterclockwise (with the attached Figure 1 direction); the second surface 622 which is turned upward to face the fluid and would hinder the driving of the impeller 6 is blocked by the first plate 4 and the blocking member 9, thereby reducing the resistance and improving the driving efficiency of the impeller 6 by the fluid; the first surface 621 is set as a concave arc surface, which can further improve the driving efficiency.

[0034] At the same time, a pulley 64 is also provided on the transverse axis 61 of the impeller 6, which is drivably connected to the energy storage conversion device 10 (such as a generator) provided above the first plate 4 and behind the blocking member 9 through a conventional structure such as a belt, so as to convert the energy generated by the rotation of the impeller 6

[0035] Energy is transferred to form electrical energy, kinetic energy or other energy to be utilized or stored.

[0036] In addition, as a preferred arrangement, the pivot connection points of the first plate 4 and the second plate 5 are closer to their front ends, and a weight box 11 is provided at the front ends of both. The weights on both sides of the pivot point can be adjusted by increasing or decreasing the weight of the weight box to cope with fluids of various flow rates. At the same time, by increasing the weight of the weight box 11 of the first plate 4, the rear end thereof can be tilted, thereby lifting the energy storage conversion device 10 out of water when used in water for easy maintenance.

[0037] It should be pointed out that the impeller 6 can also be arranged on the second plate 5 or two or more impellers 6 can be arranged on the first plate 4 and the second plate 5 at the same time; at the same time, the device can also adopt a hanging method, that is, the connecting component 7 is located at the top, which is connected to the base member 1 from top to bottom; the rudder plate 2, the cross frame 3, the first plate 4, the second plate 5, the impeller 6, etc. are located below the base member 1.

[0038] In addition, multiple devices of the present invention can be combined and used together through, for example, a connecting frame, so as to expand the scale of application.

[0039] The above is based on the ideal embodiment of the present invention. Through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. Fluid energy extraction device, characterized in that: The invention comprises a base member, a rudder plate, a cross frame, a first plate, a second plate and an impeller; the rudder plates are respectively arranged on both sides of the base member and extend upward from the base member; the first plate and the second plate are arranged up and down between the rudder plates and form a trumpet-shaped structure; at least a part of the cross frame is arranged between the two rudder plates; the second plate is pivotally connected to the base member, and the first plate is pivotally connected to the cross frame; the first plate or the second plate or both are respectively connected to the corresponding impeller through a bracket; the impeller is a columnar type, comprising a transverse axis and a plurality of blades, and the blades comprise a first surface and a second surface; the impeller is transversely arranged between the two rudder plates, and the two ends of the impeller extend out of the corresponding rudder plates respectively; The impeller is partially located in the small opening side of the trumpet-shaped structure, and the surfaces of the blades located therein facing the large opening side of the trumpet-shaped structure are all the first surfaces or all the second surfaces; one of the first plate, the second plate, the combination of the first plate and the blocking member, and the combination of the second plate and the blocking member blocks the part of the impeller that is not located in the trumpet-shaped structure from the side close to the large opening of the trumpet-shaped structure; It also includes a connecting component connected to the fixed structure; the connecting component and the base member are rotatably connected; The connecting member is a vertical rod, which is inserted into the base member from bottom to top and is rotatably connected thereto; two rudder plates are provided, which are vertically arranged on both sides of the base member; the cross frame is a longitudinal structure, and its two ends are respectively arranged on the upper parts of the rudder plates on both sides; The front ends of the first plate and the second plate are both provided with weight boxes.

2. The fluid energy extraction device according to claim 1, characterized in that: The transverse axis is a hollow structure; the blade is a long plate structure with an arc-shaped cross section; the length direction of the blade is parallel to the axial direction of the transverse axis, and its long side is fixed to the side of the transverse axis; the first surface of the blade is a concave arc surface, and the second surface is a convex arc surface; the surfaces of the blades located in the trumpet-shaped structure facing the large mouth of the trumpet-shaped structure are all first surfaces.

3. The fluid energy extraction device according to claim 2, characterized in that: The impeller is also provided with a plurality of reinforcing members, each of which is respectively connected to two adjacent blades and the transverse axis therebetween; end caps are also provided at both ends of the impeller, which are connected to all blades from the side and prevent the blades from being exposed on the outside.

4. The fluid energy extraction device according to claim 1, characterized in that: The blocking member is an arc-shaped baffle plate, which is arranged on the surface of the first plate or the second plate located outside the trumpet-shaped structure.

5. The fluid energy extraction device according to claim 1, characterized in that: The rudder plate is provided with a notch for the two ends of the impeller to pass through.

6. The fluid energy extraction device according to claim 1, characterized in that: Only one impeller is provided and is connected to the first plate.

7. The fluid energy extraction device according to any one of claims 1 to 4, characterized in that: A pulley is also arranged on the transverse axis of the impeller and is drivably connected to an energy storage conversion device; the energy storage conversion device is arranged on the first plate or the second plate connected to the corresponding impeller.

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