A heave type offshore wave energy power generation device

Abstract

The application discloses a heaving type offshore wave energy power generation device, a stand column body is in a double-layer hollow structure; a gas outlet is reserved at the top of the stand column body, a vertical hollow sleeve is installed at the center of the inside of the stand column body, the top of the hollow sleeve is fixed on the stand column through a rectangular strip, a spring is installed below the rectangular strip, the other end of the spring is fixed on a piston sheet, a second coil and a second permanent magnet for generating electricity are installed at the bottom of the hollow sleeve; a support pipe penetrates through the hollow sleeve, the bottom end of the support pipe is fixed on the seabed, the top end of the support pipe extends out of the hollow sleeve and is provided with a rotating blade at the top end, the rotating blade is located below the gas outlet; a first permanent magnet and a first coil for generating electricity are installed at the position where the rotating blade is connected with the support pipe; the outer wall of the stand column body is connected with a long floating body through a floating steel frame. The application converts wave energy into electric energy, does not use a generator to reduce cost, but utilizes the wave to drive the rotation of the blade and the heaving of the stand column body, converts the wave energy into electric energy according to the electromagnetic induction principle, is convenient for batch production, and generates economic benefits.

Description

TECHNICAL FIELD

[0001] The present application relates to wave energy power generation technology, in particular to a kind of offshore wave energy power generation device of heaving. BACKGROUND

[0002] Wave energy refers to the kinetic energy and potential energy possessed by the waves on the surface of the sea. Waves are everywhere, and the energy flow density is large, which is the most widely distributed clean and pollution-free renewable energy in the ocean. The wave energy density is low, and there is seasonal variation, but the total amount of energy contained in the wave energy in the vast sea area of our country is also amazing.

[0003] There are many kinds of wave energy power generation devices, and the conversion efficiency is different. There are mainly the following kinds: oscillating water column type, oscillating float type, contraction wave channel type, raft type, duck type, swing type and other wave energy power generation devices. Compared with foreign countries, the research on wave energy power generation in China started late, but in recent years, China has continuously increased the development and utilization of ocean energy, and has achieved quite good results. The energy conversion system includes hydraulic system, mechanical system, generator, air impeller and low water head water turbine.

[0004] The current wave energy power generation device can only utilize a small part of the energy of the wave, mainly considering the kinetic energy and potential energy, and most of the energy is to be developed and utilized. SUMMARY

[0005] The purpose of the present application is to solve the problems existing in the prior art, and to provide a kind of offshore wave energy power generation device of heaving.

[0006] Technical scheme: a kind of offshore wave energy power generation device of heaving of the present application, including stand column assembly, support pipe and floating steel frame;The stand column assembly includes stand column body, rotating blade and spring;The stand column body is double-layer hollow structure, and the size of the hollow structure is set according to the weight of the device, so that the power generation device can float at the position of maximum power generation efficiency;The top of the stand column body is reserved with an air outlet, and a vertical hollow sleeve is installed at the center in the stand column body, the top of the hollow sleeve is fixed on the stand column through a rectangular bar, the spring is installed below the rectangular bar, and the other end of the spring is fixed on the piston sheet, the movement range of the piston sheet does not exceed the bottom of the hollow sleeve. In the process of heaving of the stand column assembly, the vibration of the piston sheet achieves the effect of compression and air absorption, and drives the rotating blade to rotate;The second coil and the second permanent magnet for power generation are installed at the bottom of the hollow sleeve;The support pipe penetrates through the hollow sleeve, the bottom end of the support pipe is fixed to the seabed, the top end of the support pipe extends out of the hollow sleeve, and the top end is provided with a rotating blade, and the rotating blade is located below the air outlet;The first permanent magnet and the first coil for power generation are installed in the support pipe and connected with the rotating blade;The outer wall of the stand column body is connected with the long float body through the floating steel frame, and the power generation efficiency is improved by improving the stretching threshold of the piston sheet.

[0007] Further, the rectangular bars are arranged transversely with one end fixed to the inner side of the inner wall of the column body and the other end fixed to the hollow sleeve; the rectangular bars are parallel to the piston plates, the number of springs is the same as that of the rectangular plates, and each spring is installed vertically between the rectangular bar and the piston plate.

[0008] In order to prolong the service life of the device and enhance the stability of the device, the column body is made of high-quality carbon steel, and at the same time, the whole can oscillate with the waves, the column body includes an outer wall and an inner wall, and the hollow is arranged between the outer wall and the inner wall, the top of the column body is conical, and the air outlet is located at the top of the column body, the rotating blades are made of rubber material with wear resistance and corrosion resistance, and the long float is made of rubber with paint on the surface, which can resist corrosion of seawater and attachment of seaweed.

[0009] Further, the rotating blades are at least nine, and one end of each rotating blade is uniformly arranged along the outer periphery of the hollow sleeve.

[0010] Further, the rectangular bars are cuboids, but are not limited thereto, and are used to fix the hollow sleeve, so they need to have good rigidity, strength and corrosion resistance, and are made of high-quality carbon steel wrapped with rubber; the rectangular bars are uniformly arranged at an angle of 120°, and the springs are three in total and correspond to the rectangular bars one by one.

[0011] In order to make the whole power generation device oscillate smoothly with the waves, the floating steel frame is provided with two, which are symmetrically welded to the outer wall of the column body through a rotating joint, and the floating steel frame and the long float are connected through a rotating joint. The rotating joint is a common hinge structure, the rotating joint is fixed to the outer surface of the column body, and a rubber gasket is installed on the inner side to alleviate structural wear.

[0012] Beneficial effects: the power generation device in the application has simple structure, ingenious design and good economic benefits, and can independently or in batches complete power generation in near, far, deep sea or river, and the generated electric energy is clean and pollution-free. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a front view of the power generation device structure of the application;

[0014] Figure 2 is a side view of the power generation device structure of the application;

[0015] Figure 3 is a top view of the power generation device structure of the application;

[0016] Figure 4 is a cross-sectional view of the power generation device of the application;

[0017] Figure 5 is a schematic view of the rotating blade of the application;

[0018] Figure 6 This is a schematic diagram of the hollow sleeve of the present invention;

[0019] Figure 7 This is a schematic diagram of the piston plate of the present invention;

[0020] Figure 8 This is a schematic diagram of the floating steel frame of the present invention;

[0021] Figure 9 This is a schematic diagram of the rotary joint of the present invention;

[0022] Figure 10 This is a schematic diagram of typical moments (troughs) in the specific implementation process of the present invention;

[0023] Figure 11 This is a schematic diagram of typical moments (peaks) in the specific implementation process of the present invention. Detailed Implementation

[0024] The technical solution of the present invention will be described in detail below, but the scope of protection of the present invention is not limited to the embodiments described.

[0025] like Figure 1 As shown, the swaying nearshore wave energy generation device of this embodiment includes a column assembly, a support pipe 10, and a floating steel frame 12. The column assembly includes a column body 7, a rotating blade 3, and a spring 5. The column body 7 has a double-layer hollow structure. An air outlet 1 is reserved at the top of the column body 7. A vertical hollow sleeve 6 is installed at the center inside the column body 7. The top of the hollow sleeve 6 is fixed to the column by a rectangular bar 4. A spring 5 is installed below the rectangular bar 4. The other end of the spring 5 is fixed to a piston plate 8. A second coil and a second permanent magnet 9 for generating electricity are installed at the bottom inside the hollow sleeve 6. The support pipe 10 runs through the hollow sleeve 6. The bottom end of the support pipe 10 is fixed to the seabed. The top end of the support pipe 10 extends out of the hollow sleeve 6 and is equipped with a rotating blade 3. The rotating blade 3 is located below the air outlet 1. A first permanent magnet and a first coil for generating electricity are installed at the connection between the support pipe 10 and the rotating blade 3. The outer wall of the column body 7 is connected to a long float 11 through the floating steel frame 12.

[0026] During the swaying process of the column assembly, the vibration of the piston plate 8 compresses and draws in air, causing the rotating blade 3 to rotate. This rotation cuts the magnetic field lines generated by the first permanent magnet 2 embedded in the support tube 10, inducing a current in the support tube 10. The first part of the current is transmitted and stored using a high-voltage power transmission and energy storage device. The outer wall of the column body 7 is connected to the long float 11 via a floating steel frame 12, which hinders the vertical movement of the column during the stretching phase of the piston plate 8, increasing the stretching threshold of the piston plate 8 and thus improving the power generation efficiency of the first part. The hollow sleeve 6 is fixed to the column by a rectangular strip 4. A second permanent magnet 9 is installed in the second section of the hollow sleeve 6. The relative movement of the support tube 10 cuts the magnetic field lines, completing the power generation of the second part.

[0027] In this embodiment, the column body 7 is made of high-quality carbon steel. The top of the column body 7 is conical, and the air outlet 1 is located at the top of the conical column body 7. The rotating blades 3 are made of wear-resistant and corrosion-resistant rubber material. The long float 11 is made of rubber. In this embodiment, the height of the support pipe 10 and the size of the column can be adjusted according to the sea conditions.

[0028] In this embodiment, there are at least nine rotating blades 3. One end of each rotating blade 3 is evenly arranged along the outer circumference of the hollow sleeve 6. The second permanent magnet 9 and the second coil are located at the center convergence of each rotating blade 3.

[0029] In this embodiment, the three rectangular bars 4 are evenly arranged at a 120° angle. There are three springs 5, which correspond one-to-one with the rectangular bars 4. The rectangular bars 4 are cuboids, but are not limited to this and can also be other shapes. They are used to fix the hollow sleeve 6, so they need to have good rigidity, strength and corrosion resistance. They are made of high-quality carbon steel with rubber coating.

[0030] In this embodiment, there are two floating steel frames 12, which are symmetrically welded to the outer wall of the column body 7 through rotating joints 13. The floating steel frames 12 and the long float 11 are connected through rotating joints 13. The rotating joints 13 adopt a hinge structure and are fixed to the outer surface of the column body 7. Rubber pads 131 are installed on the inner side to mitigate structural wear.

[0031] The oscillating nearshore wave energy power generation device in this embodiment has two modes of motion for generating electricity: it can use waves to provide power to make the column oscillate up and down to generate electricity, and at the same time, the air pressure inside the column body 7 changes during the up and down oscillation, and the air inside the column body 7 accelerates the flow and drives the blades 3 to rotate to generate electricity.

[0032] The specific power generation principle of this invention is as follows:

[0033] In calm water, the springs 5 ​​and piston plates 8 are in their natural state. The double-layered hollow inner wall design and the long floats 11 provide buoyancy for the entire device, ensuring its stability. In wavy water, when the entire device, especially the column body 7, is located at the trough of a wave and the long floats 11 on both sides are located at the crest, the piston plates 8 move upward under the action of the waves. The air inside the column body 7 is compressed, driving the rotating blades 3 to rotate. This cuts the fixed first permanent magnet 2, generating an induced current and producing electricity. The electricity is then transmitted and stored through a high-voltage line and an energy storage device. In addition, as the column body 7 moves upward under the action of the waves, the magnetic field lines generated by the second permanent magnet 9, fixed to the supporting steel pipe, are cut by the second hollow sleeve 6 at the bottom of the column, also generating an induced current and producing electricity.

[0034] When the entire device, especially the column body 7, is located at the crest of a wave and the long floats 11 on both sides are located at the trough, the piston plate 8 loses the impact force of the wave and moves downward due to excessive compression. The air pressure inside the column body 7 is lower than the external pressure, generating an airflow from the outside to the inside of the vent, which drives the rotating blade 3 to rotate. This same principle generates electricity. Furthermore, when the column body 7 loses the impact of the wave and moves downward, the second permanent magnet 9 generates an induced current, generating electricity.

[0035] During the aforementioned reciprocating up-and-down oscillations, the floating steel frame 12 and the long float 11 can increase the amplitude of the stretching of the spring 5 plates, thereby increasing the air intake threshold and increasing power generation efficiency. When the long float 11 is at the crest of the wave, the angle between the long float 11 and the floating steel frame 12 is in a small angle range, having little impact on the vertical movement of the column body 7; when the long float 11 is at the trough of the wave, the angle between the long float 11 and the floating steel frame 12 is in a large angle range, hindering the vertical movement of the column body 7, and the spring 5 plates stretch a longer distance under the action of gravity, resulting in a larger oscillation amplitude and higher power generation efficiency.

[0036] In summary, the oscillating nearshore wave energy power generation device of the present invention converts wave energy into electrical energy. In order to reduce costs, it does not use a generator, but uses waves to drive the blades 3 to rotate and the column body 7 to sway, converting wave energy into electrical energy through the principle of electromagnetic induction. This facilitates mass production and generates economic benefits.

Claims

1. A helical nearshore wave energy generation device, characterized in that: It includes a column assembly, a support tube, and a floating steel frame; the column assembly includes a column body, rotating blades, and a spring; the column body has a double-layer hollow structure; an air outlet is reserved at the top of the column body, and a vertical hollow sleeve is installed at the center inside the column body. The top of the hollow sleeve is fixed to the column by a rectangular strip, and a spring is installed under the rectangular strip. The other end of the spring is fixed to a piston plate. A second coil and a second permanent magnet for generating electricity are installed at the bottom inside the hollow sleeve. The second permanent magnet and the second coil are located at the center convergence of each rotating blade. The support pipe runs through the hollow sleeve, with its bottom end fixed to the seabed and its top end extending out of the hollow sleeve. A rotating blade is installed at the top end of the support pipe, which is located below the air outlet. A first permanent magnet and a first coil for generating electricity are installed inside the support pipe at the connection point with the rotating blade. The outer wall of the column body is connected to a long floating body through a floating steel frame. During the swaying process of the column assembly, the piston plate compresses and draws in air, causing the rotating blades to rotate and cut the magnetic field lines generated by the first permanent magnet embedded in the support tube, thus generating an induced current; the relative vertical movement of the second permanent magnet and the support tube cuts the magnetic field lines, completing the second part of power generation.

2. The helical nearshore wave energy generation device according to claim 1, characterized in that: The rectangular strip is arranged horizontally, with one end fixed to the inner side of the inner wall of the column body and the other end fixed to the hollow sleeve; the rectangular strip is parallel to the piston plate, and the number of springs is the same as the number of rectangular plates, with each spring vertically installed between the rectangular strip and the piston plate.

3. The helical nearshore wave energy generation device according to claim 1, characterized in that: The column body is made of carbon steel as a whole, the top of the column body is conical, the air outlet is located at the top of the column body, the rotating blades are made of wear-resistant and corrosion-resistant rubber material, and the long float is made of rubber.

4. The helical nearshore wave energy generation device according to claim 2, characterized in that: The rotating blades are at least nine in number, with one end of each rotating blade evenly arranged along the outer circumference of the hollow sleeve.

5. The helical nearshore wave energy generation device according to claim 2, characterized in that: The rectangular bars are cuboids in shape and are evenly arranged at 120° angles to each other. There are three springs in total, each corresponding to one of the rectangular bars.

6. The helical nearshore wave energy generation device according to claim 1, characterized in that: Two floating steel frames are provided, which are symmetrically hinged to the outer wall of the column body through rotating joints. The floating steel frames and the long floating body are connected through rotating joints. The rotating joints are fixed to the outer surface of the column body and rubber pads are installed on the inner side.

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