Bidirectional wave power generation device and using method thereof

Abstract

The invention provides a bidirectional wave power generation device and a using method thereof.The bidirectional wave power generation device comprises a rack, a power generator, a hub and blades, the power generator is fixed to the rack, the hub is fixed to a power input shaft of the power generator, the multiple blades are installed on the hub, the blades are rotationally connected to the hub through deflection shafts, and the blades are connected to the hub through the deflection shafts; the hub is provided with a limiting device used for limiting the blades. The blades and the hub are connected through the deflection shafts, the blades are limited through the limiting columns, the deflection directions of the blades can be automatically adjusted according to the direction of sea waves, and the blades can continuously rotate in the anticlockwise direction in the forward surging or retreating process of the sea waves; therefore, the power input shaft is continuously driven to drive the generator to generate power, power generation cost is reduced, and power generation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ocean wave power generation, and in particular to a bidirectional ocean wave power generation device and a use method thereof. Background Art

[0002] Current wave energy generation usually uses buoy compressed air to generate electricity, or uses a bidirectional wave generator set with dual turbine blades, dual one-way wheels and dual generators in each set. This type of generator set requires more parts, has a high cost and a relatively low energy conversion rate.

[0003] Since the waves are intermittent, they constantly impact the impeller blades of the generator set, causing the rotation direction of the ordinary blades to be constantly reversed, so that the ordinary generator set cannot generate electricity stably, resulting in unsatisfactory power generation efficiency. The above-mentioned complex structure of the generator set limits the application and power generation efficiency of wave power generation. Therefore, it is necessary to develop a simplified wave generator set that can make full use of the waves, reduce costs, and increase power generation per unit area. Summary of the invention

[0004] The purpose of the present invention is to provide a bidirectional wave power generation device and a method of using the same, which can enable the blades to automatically adjust the deflection direction of the blades according to the direction of the waves, thereby continuously driving the power input shaft to drive the generator to generate electricity, thereby improving the power generation efficiency.

[0005] According to one object of the present invention, the present invention provides a bidirectional wave power generation device, including a frame, a generator, a hub and blades, the generator is fixed on the frame, the hub is fixed on the power input shaft of the generator, a plurality of blades are mounted on the hub, the blades are rotatably connected to the hub via a deflection shaft, and a limiting device for limiting the blades is provided on the hub.

[0006] Furthermore, the generator can be installed on the seabed through the frame.

[0007] Furthermore, the hub is provided with four blades, and the four blades are evenly distributed on the hub.

[0008] Furthermore, the limiting device includes a limiting column.

[0009] Furthermore, the limiting column is arranged on the surface of the hub, the limiting column is fixed on the circumferential surface of the hub, and the height of the bottom end of the blade is smaller than the top height of the limiting column.

[0010] Furthermore, the rotation angle of the blade relative to the coastline is between 5° and 30°.

[0011] Furthermore, each of the blades is configured with two limiting posts, and the two limiting posts are symmetrically distributed on both sides of the blade.

[0012] Further, the deflection axis is arranged at one end of the blade, and the deflection axes of all the blades are arranged on the same side of the blade.

[0013] Furthermore, an inertia flywheel is fixed on the power input shaft.

[0014] According to another object of the present invention, the present invention provides a method for using the above-mentioned bidirectional wave power generation device, comprising the following steps:

[0015] S1, when the waves come, the waves push the blades to deflect forward around the deflection axis and are limited to a fixed angle by the limit column. Then the waves push the blades to rotate counterclockwise, and the blades drive the power input shaft to output power to the generator to generate electricity;

[0016] S2, when the waves recede, the waves push the blades to deflect backward around the deflection axis and are limited to a fixed angle by the limit column. Then the waves push the blades to rotate counterclockwise, and the blades continue to drive the power input shaft to output power to the generator to generate electricity;

[0017] S3, when the waves come again, the waves drive the blades to deflect forward around the deflection axis, and are limited to a fixed angle by the limit column. The waves will push the blades to rotate counterclockwise. In this way, the cycle of the rise and fall of the waves pushes the blades and the generator to rotate counterclockwise to generate electricity.

[0018] Furthermore, an inertial flywheel is fixed on the power input shaft. At the pause moment of the rise and fall of waves, the power input shaft is driven to rotate by the inertial flywheel arranged on the power input shaft. The blades automatically return to a straight state under the resistance of sea water to reduce the resistance to blade rotation, and the inertial flywheel is used to stabilize the generator speed.

[0019] The technical solution of the present invention connects the blades and the hub through a deflection shaft and limits the blades through limiting columns, so that the blades can automatically adjust their deflection direction according to the direction of the waves, so that the blades can continue to rotate in a counterclockwise direction during the forward or backward process of the waves, thereby continuously driving the power input shaft to drive the generator to generate electricity, reducing the cost of power generation and improving the power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the deflection shaft and blades according to an embodiment of the present invention;

[0023] In the figure: 1. frame; 2. generator; 3. hub; 4. blades; 5. deflection shaft; 6. limit column; 7. inertia flywheel; 8. power input shaft. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Example 1

[0028] like Figure 1-Figure 2 As shown,

[0029] A bidirectional sea wave power generation device comprises a frame 1, a generator 2, a hub 3 and blades 4. The generator 2 is fixed on the frame 1 and can be installed on the seabed through the frame 1.

[0030] A hub 3 is fixed on the power input shaft 8 of the generator 2 , and a plurality of blades 4 are mounted on the hub 3 . In this embodiment, four blades 4 are arranged on the hub 3 , and the four blades 4 are evenly distributed on the hub 3 .

[0031] Specifically, the blades 4 are mounted on the hub 3 via the deflection shaft 5 , and the blades 4 can rotate relative to the deflection shaft 5 and relative to the hub 3 .

[0032] In order to limit the rotation angle of the blade 4, a limiting column 6 is provided on the surface of the hub 3. The limiting column 6 is fixed on the circumferential surface of the hub 3. There are two limiting columns 6, and the two limiting columns 6 are symmetrically distributed on both sides of the blade 4. The height of the bottom end of the blade 4 is less than the top height of the limiting column 6, so that the blade 4 can be limited by the limiting column 6.

[0033] In this embodiment, the blades 4 can be rotated relative to the hub 3 via the deflection shaft 5, and the rotation angle of the blades 4 relative to the straight direction is maintained between 5° and 30° as the optimal angle.

[0034] In this embodiment, the centerline position of the limiting column 6 is parallel to the coastline, so that under the action of the waves, the two extreme positions of the blade 4 are at the same fixed angle relative to the coastline.

[0035] In this embodiment, the deflection axis 5 is arranged at one end of the blade 4 , and the deflection axes 5 of all the blades 4 are arranged on the same side of the blade 4 , so that the deflection directions of all the blades 4 are consistent.

[0036] In this embodiment, the limiting posts 6 are symmetrically arranged on both sides of the rotating end of the blade 4 . When the blade 4 rotates relative to the deflection shaft 5 , the blade 4 can rotate within the range of the two limiting posts 6 , and the blade 4 is limited by the limiting posts 6 .

[0037] like Figure 2 As shown, when the deflection axis 5 is arranged at one end of the blade 4 , the blade 4 rotates around the deflection axis 5 , and the rotation range of the blade 4 in two directions is limited by two limiting columns 6 .

[0038] In this embodiment, in order to maintain the stable operation of the generator set 2, an inertial flywheel 7 is also fixed to the power input shaft 8 of the generator 2. By setting the inertial flywheel 7, at the pause moment of the rise and fall of waves, the blades 4 can automatically restore to a straight state under the resistance of sea water. At this time, the power input shaft 8 is driven to rotate by the inertial flywheel 7 on the power input shaft 8, thereby stabilizing the rotation speed of the generator set 2.

[0039] The blade 4 of the present invention is deflected forward or backward around the hub 3 via the deflection shaft 5, and the limit position of the deflection can be limited by the limit column 6, so that the blade 4 can be at a fixed angle relative to the straight position.

[0040] When the sea waves come, the sea waves push the blades 4 to deflect forward around the deflection axis 5, and are limited to a fixed angle by the limit column 6. Then the sea waves push the blades 4 to rotate counterclockwise (from the coast to the sea), and the blades 4 drive the power input shaft 8 to output power to the generator 2 for generating electricity;

[0041] When the waves recede, the waves push the blades 4 to deflect backward around the deflection axis 5 and are limited to a fixed angle by the limit column 6. Then the waves push the blades 4 to rotate counterclockwise (from the coast to the sea), and the blades 4 continue to drive the power input shaft 8 to output power to the generator 2 for generating electricity;

[0042] When the waves come again, the waves drive the blades 4 to deflect forward around the deflection axis 5, and are limited to a fixed angle by the limit column 6. The waves will push the blades 4 to rotate counterclockwise. In this way, the cycle of the rise and fall of the waves pushes the blades 4 and the generator 2 to rotate counterclockwise to generate electricity.

[0043] At the pause moment of the rise and fall of waves, the generator 2 and the power input shaft 8 will drive the power input shaft 8 to rotate through the inertial flywheel 7 set on the power input shaft 8. The blades 4 can automatically restore to a straight state under the resistance of seawater to reduce the rotation resistance of the blades 4. A flywheel can also be installed on the generator 2 to stabilize the rotation speed of the generator 2.

[0044] The present invention connects the blades 4 and the hub 3 through a deflection shaft 5 and limits the blades 4 through a limiting column 6, so that the blades 4 can automatically adjust the deflection direction of the blades 4 according to the direction of the waves, so that the blades 4 can continue to rotate in the counterclockwise direction during the forward or backward process of the waves, thereby continuously driving the power input shaft 8 to drive the generator 2 to generate electricity, reducing the cost of power generation and improving the power generation efficiency.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bidirectional wave power generation device, characterized in that: It includes a frame, a generator, a hub and blades. The generator is fixed on the frame, the hub is fixed on the power input shaft of the generator, a plurality of blades are installed on the hub, the blades are rotatably connected to the hub through a deflection shaft, and a limiting device for limiting the blades is provided on the hub.

2. The bidirectional wave power generation device according to claim 1, characterized in that: The generator is installed on the seabed through the frame.

3. The bidirectional wave power generation device according to claim 1, characterized in that: The limiting device comprises a limiting column.

4. The bidirectional wave power generation device according to claim 3, characterized in that: The limiting column is arranged on the surface of the hub, the limiting column is fixed on the circumferential surface of the hub, and the height of the bottom end of the blade is smaller than the top height of the limiting column.

5. The bidirectional wave power generation device according to claim 4, characterized in that: Each blade is configured with two limiting posts, and the two limiting posts are symmetrically distributed on both sides of the blade.

6. The bidirectional wave power generation device according to claim 5, characterized in that: The deflection axis is arranged at one end of the blade, and the deflection axes of all the blades are arranged on the same side of the blade.

7. The bidirectional wave power generation device according to claim 1, characterized in that: The rotation angle of the blade relative to the coastline is between 5° and 30°.

8. The bidirectional wave power generation device according to claim 1, characterized in that: An inertia flywheel is fixed on the power input shaft.

9. The method for using the bidirectional wave power generation device according to claim 1, characterized in that: The steps include: S1, when the waves come, the waves push the blades to deflect forward around the deflection axis and are limited to a fixed angle by the limit column. Then the waves push the blades to rotate counterclockwise, and the blades drive the power input shaft to output power to the generator to generate electricity; S2, when the waves recede, the waves push the blades to deflect backward around the deflection axis and are limited to a fixed angle by the limit column. Then the waves push the blades to rotate counterclockwise, and the blades continue to drive the power input shaft to output power to the generator to generate electricity; S3, when the waves come again, the waves drive the blades to deflect forward around the deflection axis, and are limited to a fixed angle by the limit column. The waves will push the blades to rotate counterclockwise. In this way, the cycle of the rise and fall of the waves pushes the blades and the generator to rotate counterclockwise to generate electricity.

10. The method for using the bidirectional wave power generation device according to claim 9, characterized in that: An inertia flywheel is fixed on the power input shaft. When there is a pause when the waves rise and fall, the inertia flywheel installed on the power input shaft drives the power input shaft to rotate. The blades automatically return to a straight state under the resistance of seawater to reduce the resistance to blade rotation, and the inertia flywheel stabilizes the generator speed.

Images