CN212898783U

CN212898783U - Fluid energy extraction device

Info

Publication number: CN212898783U
Application number: CN202020872835.7U
Authority: CN
Inventors: 张维中
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2021-04-06
Anticipated expiration: 2030-05-22

Abstract

The utility model relates to a fluid energy extraction device, which comprises a basic piece, a rudder plate, a cross frame, a first plate, a second plate and an impeller; the rudder plates are arranged on two sides of the base piece; the first plate and the second plate are arranged between the rudder plates to form a horn-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 shaft and blades, and the blades comprise a first surface and a second surface; the impeller is transversely arranged between the two rudder plates, and two ends of the impeller respectively extend out of the corresponding rudder plates; the impeller part is positioned in one side of the small opening of the horn-shaped structure, and the surfaces of the blades positioned in the impeller part, which face the side of the large opening of the horn-shaped structure, are first surfaces; the device adopts a structure of two seesaws, so that the flow velocity of fluid can be increased, the energy of the fluid can be gathered, and the efficiency of energy extraction is improved; meanwhile, under the condition that the flow rate of the fluid is high, the two seesaw structures can perform pivoting movement, so that the impact of the high-flow-rate fluid on the whole structure is reduced, and the service life and the safety of the device are improved.

Description

Fluid energy extraction device

Technical Field

The utility model relates to an energy extraction field especially relates to fluid energy extraction device.

Background

There are many designs that extract energy from fluids, such as wind, flowing water, tides, etc., by rotation of the impeller for use in generating electricity, driving device operation, or converting to other forms of energy for use and storage. However, these designs generally have the problem of insufficient energy extraction efficiency, which results in difficulty in driving the impeller at low fluid flow rates, and thus less energy can be extracted; in order to increase the energy extraction, the conventional way is to make the size of the impeller large, but this not only increases the manufacturing cost, but also increases the trouble for transportation and installation. At present, a design of arranging a bell mouth to collect fluid is provided, but the safety and the stability are not enough; the device may be damaged if an excessive fluid flow rate is encountered.

Disclosure of Invention

The utility model overcomes prior art's is not enough, provides a fluid energy extraction element that energy extraction efficiency is high, and the security is good.

In order to achieve the above purpose, the utility model adopts the technical scheme that: there is provided a fluid energy extraction device characterized by: the device comprises a base part, a plurality of rudder plates, a cross frame, a first plate, a second plate and a plurality of impellers; the rudder plates are respectively arranged on two sides of the base part and simultaneously extend towards the upper part or the lower part of the base part; the first plate and the second plate are vertically arranged between the rudder plates and form a horn-shaped structure; at least part of the transverse 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 with the corresponding impellers through brackets; each impeller is of a column type and comprises a transverse shaft and a plurality of blades, and each blade comprises a first surface and a second surface; the impeller is transversely arranged between the two rudder plates, and two ends of the impeller respectively extend out of the corresponding rudder plates; the impeller part is positioned in one side of a small opening of the horn-shaped structure, and the surfaces of the blades positioned in the impeller part, which face the side of the large opening of the horn-shaped structure, are both first surfaces or both second surfaces; one of the first plate, the second plate, the combination of the first plate and the shielding piece and the combination of the second plate and the shielding piece blocks the part of the impeller which is not positioned in the horn-shaped structure from the side close to the large opening of the horn-shaped structure.

As a preferable scheme, the transverse shaft is of a hollow structure; the blade is of a long plate structure with an arc-shaped cross section; the length direction of the blade is axially parallel to the transverse shaft, and the long edge of the blade is fixedly connected to the side surface of the transverse shaft; the first surface of the blade is a concave cambered surface, and the second surface of the blade is a convex cambered surface; the surface of the blade located in the horn-shaped structure and facing the large opening side of the horn-shaped structure is a first surface.

As a more preferable scheme, the impeller is also provided with a plurality of reinforcing pieces, and each reinforcing piece is respectively connected with two adjacent blades and a transverse shaft between the two adjacent blades; the two ends of the impeller are also provided with seal end parts which are connected with all the blades from the side surface and make the blades not exposed outside.

Preferably, the blocking member is an arc-shaped baffle plate, and is disposed on the surface of the first plate or the second plate, which is located outside the trumpet-shaped structure.

As a preferable scheme, the fixing structure further comprises a connecting part connected with the fixing structure; the connecting part and the base part are rotatably connected.

As a more preferred solution, said connecting members are uprights inserted from below and rotatably connected to the base member; two rudder plates are vertically arranged on two sides of the foundation member and extend above the foundation member; the transverse frame is of a longitudinal structure, and two ends of the transverse frame are respectively arranged on the upper parts of the two side rudder plates.

More preferably, the front ends of the first plate and the second plate are provided with weight boxes.

As a more preferable scheme, the rudder plate is provided with a notch for allowing two ends of the impeller to penetrate out.

As a further preferred solution, only one impeller is provided and is connected to the first plate.

Preferably, a belt wheel is further arranged on the transverse shaft of the impeller and is connected with the energy storage and conversion device in a transmission manner; the energy storage and conversion device is arranged on the first plate or the second plate connected with the corresponding impeller.

The beneficial technical effects of the utility model mainly lie in: the fluid energy extraction device has high energy extraction efficiency and good safety.

(1) The utility model can be used for extracting wind energy, water flow energy, tidal energy and the like and converting the extracted energy into electric energy, driving energy or energy in other forms; the utility model adopts the structure of two seesaws, which can increase the flow velocity of the fluid and gather the energy of the fluid; therefore, even at a low flow speed, the fluid can drive the impeller well, and the energy extraction efficiency is improved; meanwhile, under the condition that the flow rate of the fluid is high, the two seesaw structures can perform pivoting movement, so that the large opening of the horn-shaped structure is reduced, and the small opening of the horn-shaped structure is enlarged, the impact of the high-flow-rate fluid on the whole structure is reduced, and the safety and the service life of the device are improved.

(2) The utility model discloses a setting of impeller position has guaranteed that the fluid only strikes the face that plays the impetus to drive impeller, and all is blockked to the face that plays the hindrance effect to reduced the resistance, improved the drive efficiency of fluid to the impeller.

(3) The design that the two ends of the impeller respectively extend out of the notches of the corresponding rudder plates reduces the gaps wound by foreign matters (such as aquatic weeds, floaters rolled up by wind and the like) in the conventional design, and increases the winding difficulty of the impeller, thereby prolonging the service life of the impeller and reducing the maintenance difficulty of the impeller; meanwhile, the end closing pieces arranged at the two ends of the impeller can reduce the possibility of winding.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.

Fig. 2 is a schematic top view of a preferred embodiment of the invention.

Fig. 3 is a schematic structural view of the impeller of the present invention.

Fig. 4 is a schematic cross-sectional view taken at a-a in fig. 3.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic drawings and illustrate, by way of illustration only, the basic structure of the invention, and which therefore show only the constituents relevant to the invention. It should be noted that the terms "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1 to 4, a fluid energy extraction device comprises 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 member 7.

The base member 1 is of a plate-shaped structure and is horizontally arranged; the two rudder plates 2 are arranged in parallel, are respectively and vertically arranged on two sides of the base member 1 and extend above the base member 1; the transverse frame 3 is of a longitudinal structure, and two ends of the transverse frame are respectively arranged at the upper parts of the corresponding rudder plates 2, so that the middle part of the transverse frame 3 is positioned above the space between the two rudder plates 2; preferably, the cross frame 3 is perpendicular to both rudder plates 2.

The first plate 4 and the second plate 5 are arranged between the two rudder plates 2 and are arranged up and down to form a horn-shaped structure; the second plate 5 is pivotally connected to the upper surface of the base member 1 through a pivot base 12, and the two plates form a seesaw structure; the first plate 4 is pivotally connected to the lower surface of the cross frame 3 through a pivot base 12, and the first plate and the second plate form a seesaw structure; preferably, the pivot bases 12 are provided with stoppers 121, which ensure that the first and second plates 4, 5 will not collide with each other due to swinging and damage the device even in extreme cases where the flow rate and intensity of the fluid suddenly become large.

The impeller 6 is cylindrical and comprises a transverse shaft 61 and a plurality of blades 62; the transverse shaft 61 is of 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 axial direction of the transverse shaft 61, and the long side of the blade is fixedly connected with the side surface of the transverse shaft 61; a plurality of blades 62 are uniformly arranged along the circumferential direction of the transverse shaft 61; the blades 62 each include a first face 621 and a second face 622, wherein the first face 621 is a concave arc face, and the second face 622 is a convex arc face. Meanwhile, two ends of the impeller 6 are also provided with seal end parts 65 which are in a bowl-shaped structure; the bowl edge part of the bowl-shaped structure is connected with the tips of all the blades 62 from the side surface, so that all the blades 62 are covered from the side surface, and the blades 62 are not exposed outside; both ends of the transverse shaft 61 extend out from the bowl bottom of the bowl-shaped structure of the end closure 65 on the corresponding side. In addition, preferably, a plurality of reinforcing pieces 63 are arranged on the impeller 6; each reinforcing member 63 is of a sheet structure and is perpendicular to the transverse shaft 61, and two adjacent blades 62 and the transverse shaft 61 between the two adjacent blades are connected with the corresponding reinforcing member 63; this arrangement ensures the strength of the impeller 6 and avoids the blades 62 from bending when rotating.

The impeller 6 is transversely arranged between the two rudder plates 2, and two ends of the impeller 6 respectively extend out of the gaps of the corresponding rudder plates 2; specifically, the impeller 6 is transversely arranged at the rear side of the first plate 4 (the large opening side of the horn-shaped structure is the front side, the small opening side of the horn-shaped structure is the rear side, and the lower side is the same), and two side surfaces of the first plate 4 are respectively provided with a bracket 8; each bracket 8 is secured at one end to the side of the first plate 4 and at its other end is pivotally connected to the end of a transverse shaft 61 by conventional means. The design that the two ends of the impeller 6 respectively extend out of the gaps of the corresponding rudder plate 2 can reduce the gaps of the transverse shaft 61 of the impeller 6 wound by foreign matters (such as aquatic weeds, floaters rolled up by wind and the like) in the conventional design, and increase the difficulty of winding the impeller 6, thereby reducing the possibility of winding the impeller 6 by the foreign matters, prolonging the service life of the impeller 6 and reducing the difficulty of maintaining the impeller 6.

The impeller 6 is partially positioned in the small-opening side of the trumpet-shaped structure, and the surfaces of the blades 62 facing the large-opening side of the trumpet-shaped structure are all first surfaces 621; meanwhile, a blocking piece 9 is arranged on the upper surface of the first plate 4, and the blocking piece 9 is an arc-shaped plate protruding forwards; the parts of the impeller 6 not located in the trumpet-like structure are blocked from the front side (i.e., the side close to the large mouth of the trumpet-like structure) by the cooperation of the first plate 4 and the blocking member 9.

The connecting part 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 and the like), and the top end of which is inserted into the foundation member 1 from bottom to top and is rotatably connected with the foundation member through a conventional structure; for smooth rotation, a bearing is provided between the connecting member 7 and the base member 1.

When the device works, due to the arrangement of the rudder plates 2 on the two sides, fluid impacts the outer side surface of the rudder plate, so that the base piece 1 and the upper structure thereof rotate on a horizontal plane by taking the connecting part 7 as a rotating shaft, and the large opening of the horn-shaped structure is aligned to the fluid; the fluid enters the horn-shaped structure from the large opening and drives the impeller 6 to rotate at the small opening side of the horn-shaped structure; because the flow velocity of the fluid is increased from the large opening to the small opening, the energy of the fluid is gathered, and therefore, the impeller 6 can be well driven even under the condition of low flow velocity, and the efficiency of driving the impeller 6 by the fluid is improved. And the arrangement of the pivotal connection of the first plate 4 and the second plate 5 can cause the pivotal movement of the first plate 4 and the second plate 5 under the condition of high fluid flow rate, so that the large opening of the horn-shaped structure is reduced and the small opening is enlarged, thereby reducing the impact of high-flow-rate fluid on the whole structure. In addition, the impeller 6 is positioned to ensure that the fluid only impacts the first surface 621, which is located below the first plate 4 and acts to push the impeller 6, so that the impeller 6 rotates counterclockwise (in the direction of fig. 1); the second surface 622 which can play a role of blocking the driving of the impeller 6 and faces the fluid when rotating upwards is blocked by the first plate 4 and the blocking piece 9, so that the resistance is reduced, and the driving efficiency of the fluid to the impeller 6 is improved; the first surface 621 is a concave arc surface, which can further improve the driving efficiency.

Meanwhile, the horizontal shaft 61 of the impeller 6 is further provided with a pulley 64 which is drivingly connected with an energy storage and conversion device 10 (such as a generator) arranged above the first plate 4 and behind the blocking member 9 by a conventional structure such as a belt, so as to transmit the energy generated by the rotation of the impeller 6 to form electric energy, kinetic energy or other energy for utilization or storage.

In addition, as a preferable arrangement, the pivotal connection points of the first plate 4 and the second plate 5 are both closer to the front ends thereof, and the counterweight boxes 11 are arranged at the front ends of the first plate and the second plate, so that the counterweight on both sides of the pivot point can be adjusted by increasing or decreasing the weight of the counterweight boxes, thereby dealing with fluids of various flow rates; meanwhile, the rear end of the counterweight box 11 of the first plate 4 is tilted by adding the counterweight, so that the energy storage and conversion device 10 is lifted out of the water surface when the energy storage and conversion device is used in water, and the maintenance is convenient.

It should be noted that the impeller 6 may also be provided on the second plate 5 or two or more impellers 6 may be provided on both the first plate 4 and the second plate 5; meanwhile, the device can also adopt a hanging connection mode, namely the connecting part 7 is positioned at the top and is connected with the base part 1 from top to bottom; the rudder plate 2, the crossbars 3, the first plate 4, the second plate 5, the impellers 6 and the like are located below the base member 1.

In addition, a plurality of the device can be combined together for use through a connecting frame and the like, so that the scale of application is enlarged.

In light of the foregoing, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A fluid energy extraction device, characterized by: the device comprises a base part, a plurality of rudder plates, a cross frame, a first plate, a second plate and a plurality of impellers; the rudder plates are respectively arranged on two sides of the base part and simultaneously extend towards the upper part or the lower part of the base part; the first plate and the second plate are vertically arranged between the rudder plates and form a horn-shaped structure; at least part of the transverse 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 with the corresponding impellers through brackets; each impeller is of a column type and comprises a transverse shaft and a plurality of blades, and each blade comprises a first surface and a second surface; the impeller is transversely arranged between the two rudder plates, and two ends of the impeller respectively extend out of the corresponding rudder plates; the impeller part is positioned in one side of a small opening of the horn-shaped structure, and the surfaces of the blades positioned in the impeller part, which face the side of the large opening of the horn-shaped structure, are both first surfaces or both second surfaces; one of the first plate, the second plate, the combination of the first plate and the shielding piece and the combination of the second plate and the shielding piece blocks the part of the impeller which is not positioned in the horn-shaped structure from the side close to the large opening of the horn-shaped structure.

2. The fluid energy extraction device of claim 1, wherein: the transverse shaft is of a hollow structure; the blade is of a long plate structure with an arc-shaped cross section; the length direction of the blade is axially parallel to the transverse shaft, and the long edge of the blade is fixedly connected to the side surface of the transverse shaft; the first surface of the blade is a concave cambered surface, and the second surface of the blade is a convex cambered surface; the surface of the blade located in the horn-shaped structure and facing the large opening side of the horn-shaped structure is a first surface.

3. The fluid energy extraction device of claim 2, wherein: the impeller is also provided with a plurality of reinforcing pieces, and each reinforcing piece is respectively connected with two adjacent blades and a transverse shaft between the two adjacent blades; the two ends of the impeller are also provided with seal end parts which are connected with all the blades from the side surface and make the blades not exposed outside.

4. The fluid energy extraction device of claim 1, wherein: a baffle piece is an arc-shaped baffle plate and is arranged on the surface of the first plate or the second plate, which is positioned on the outer side of the horn-shaped structure.

5. The fluid energy extraction device as defined in any one of claims 1-4, wherein: the connecting component is connected with the fixed structure; the connecting part and the base part are rotatably connected.

6. The fluid energy extraction device of claim 5, wherein: the connecting part is a vertical rod which is inserted into the foundation piece from bottom to top and is rotatably connected with the foundation piece; two rudder plates are vertically arranged on two sides of the foundation member and extend above the foundation member; the transverse frame is of a longitudinal structure, and two ends of the transverse frame are respectively arranged on the upper parts of the two side rudder plates.

7. The fluid energy extraction device of claim 6, wherein: the front ends of the first plate and the second plate are provided with counterweight boxes.

8. The fluid energy extraction device of claim 6, wherein: the rudder plate is provided with a notch for two ends of the impeller to penetrate through.

9. The fluid energy extraction device of claim 6, wherein: only one impeller is arranged and connected with the first plate.

10. The fluid energy extraction device as defined in any one of claims 1-4, wherein: the transverse shaft of the impeller is also provided with a belt wheel which can be connected with an energy storage and conversion device in a transmission way; the energy storage and conversion device is arranged on the first plate or the second plate connected with the corresponding impeller.