Ocean energy collection device

Abstract

The present invention discloses an ocean energy collection device, including a piezoelectric part, an adjustment mechanism and a floating body, wherein a cavity is arranged in the piezoelectric part, the adjustment mechanism includes a first adjustment part and a second adjustment part, the first adjustment part is connected to the piezoelectric part, an adjustment cavity connected to the cavity is arranged in the first adjustment part, the second adjustment part and the first adjustment part are mutually sleeved and can move up and down relative to the first adjustment part, so as to reciprocate and compress the air in the adjustment cavity and the cavity, and the floating body is connected to the second adjustment part, so as to control the movement of the second adjustment part. The ocean energy collection device according to the embodiment of the present invention is not only more convenient to use, but also has a longer service life.

Description

Technical Field

[0001] The invention relates to a power generation device, in particular to an ocean energy collection device. Background Art

[0002] The ocean, as the most extensive body of water on Earth, contains abundant energy such as wave energy and tidal energy. How to fully convert the energy in the ocean into electrical energy for human use is an urgent problem to be solved. Therefore, ocean energy harvesting has increasingly become one of the cutting-edge hot technologies that academia and industry are paying attention to.

[0003] The piezoelectric energy harvesting device is a type of marine energy harvesting device, which mainly includes a center frame and a plurality of cantilever beams arranged on the center frame, a mass block is arranged at the free end of the cantilever beam, and a piezoelectric body is arranged at the connection between the cantilever beam and the center frame. The existing piezoelectric energy harvesting device has the following disadvantages: since the cantilever beam is always subjected to the gravity of the mass block when it is statically placed, the cantilever beam and the piezoelectric body are always in a bent state. During long-term operation, the cantilever beam and the piezoelectric body will produce fatigue, thereby greatly shortening the service life of the cantilever beam and the piezoelectric body. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an ocean energy collection device that is not only more convenient to use but also has a longer service life.

[0005] The ocean energy collection device according to an embodiment of the present invention comprises:

[0006] A piezoelectric portion, wherein a cavity is disposed in the piezoelectric portion;

[0007] The regulating mechanism comprises a first regulating part and a second regulating part, wherein the first regulating part is connected to the piezoelectric part, a regulating cavity communicating with the cavity is arranged in the first regulating part, and the second regulating part and the first regulating part are mutually sleeved and can move up and down relative to the first regulating part, so as to reciprocately compress the regulating cavity and the air in the cavity;

[0008] The floating body is connected to the second adjusting part so as to control the movement of the second adjusting part.

[0009] The ocean energy collection device according to the embodiment of the present invention has at least the following technical effects:

[0010] When it is necessary to use the ocean energy collection device of the embodiment of the present invention, the piezoelectric part and / or the first regulating part are installed on the seabed, and the float is floated on the sea surface. Driven by the periodic fluctuations of the waves, the float will rise and fall periodically, and the float will then control the second regulating part to move up and down reciprocatingly relative to the first regulating part. During the reciprocating movement of the second regulating part, the air in the regulating cavity can be reciprocatingly compressed. Since the regulating cavity is connected to the cavity in the piezoelectric part, the air in the cavity can be reciprocatingly compressed during the reciprocating movement of the second regulating part. The air in the cavity can reciprocatingly squeeze the inner wall of the piezoelectric part. According to the piezoelectric effect, the piezoelectric part will generate electrical energy when it is reciprocated and squeezed, that is, it can convert mechanical energy into electrical energy, thereby generating electricity. The ocean energy collection device according to the embodiment of the present invention is not only easy to install and use, but also has a longer service life compared to the cantilever beam piezoelectric collection device.

[0011] According to some embodiments of the present invention, the second adjustment portion is adapted to the adjustment cavity and can be installed in the adjustment cavity so as to slide up and down.

[0012] According to some embodiments of the present invention, a through hole is provided at the top of the regulating cavity, the float is located above the first regulating part, and a connecting part passing through the through hole and connected to the second regulating part is provided on the float.

[0013] According to some embodiments of the present invention, the regulating cavity is a vertically arranged cylindrical structure.

[0014] According to some embodiments of the present invention, an annular baffle is circumferentially provided at the top end of the inner side wall of the regulating chamber, and the connecting portion passes through the annular baffle.

[0015] According to some embodiments of the present invention, the first regulating portion is disposed at an upper end of the piezoelectric portion, and a bottom end of the regulating cavity is communicated with a top end of the cavity.

[0016] According to some embodiments of the present invention, an inner diameter of the first adjustment portion is greater than an inner diameter of the piezoelectric portion.

[0017] According to some embodiments of the present invention, an elastic reset member is provided between the second adjusting portion and the bottom end of the cavity.

[0018] According to some embodiments of the present invention, the elastic return member is a spring.

[0019] According to some embodiments of the present invention, the piezoelectric portion is a piezoelectric circular tube, and the piezoelectric polarization direction of the piezoelectric portion is radial.

[0020] According to some embodiments of the present invention, a fixing portion is provided at the bottom of the piezoelectric portion, and the fixing portion is used to be installed on the seabed.

[0021] According to some embodiments of the present invention, the connecting portion is a vertically arranged rod-shaped structure.

[0022] According to some embodiments of the present invention, the float is made of foam material.

[0023] According to some embodiments of the present invention, the outer wall of the piezoelectric part is coated with a protective layer, and the protective layer is used to prevent seawater corrosion.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Reference numerals:

[0028] Piezoelectric part 100, cavity 101, closing plate 102; adjustment mechanism 200, first adjustment part 201, second adjustment part 202, adjustment cavity 203, through hole 204, annular baffle 205; floating body 300, connecting part 301; elastic reset member 400; fixing part 500. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] 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", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, 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 communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Reference below Figure 1 An ocean energy collection device according to an embodiment of the present invention is described.

[0033] According to the ocean energy collection device of the embodiment of the present invention, Figure 1 As shown, including:

[0034] The piezoelectric part 100 has a cavity 101 disposed therein;

[0035] The regulating mechanism 200 includes a first regulating part 201 and a second regulating part 202. The first regulating part 201 is connected to the piezoelectric part 100. The first regulating part 201 is provided with a regulating cavity 203 communicating with the cavity 101. The second regulating part 202 and the first regulating part 201 are mutually sleeved and can move up and down relative to the first regulating part 201, so as to reciprocate and compress the air in the regulating cavity 203 and the cavity 101.

[0036] The floating body 300 is connected to the second adjusting part 202 to control the movement of the second adjusting part 202 .

[0037] When it is necessary to use the ocean energy collection device of the embodiment of the present invention, the piezoelectric part 100 and / or the first regulating part 201 are installed on the seabed, and the buoy 300 is floated on the sea surface. Driven by the periodic fluctuations of the waves, the buoy 300 will rise and fall periodically, and the buoy 300 will then control the second regulating part 202 to move up and down reciprocatingly relative to the first regulating part 201. During the reciprocating movement of the second regulating part 202, the air in the regulating chamber 203 can be reciprocatingly compressed. Since the regulating chamber 203 is connected to the cavity 101 in the piezoelectric part 100, the air in the cavity 101 can be reciprocatingly compressed during the reciprocating movement of the second regulating part 202. The air in the cavity 101 can reciprocatingly squeeze the inner wall of the piezoelectric part 100. According to the piezoelectric effect, the piezoelectric part 100 will generate electrical energy when it is reciprocated and squeezed, that is, it can convert mechanical energy into electrical energy, thereby generating electricity. The ocean energy collection device according to the embodiment of the present invention is not only easy to install and use, but also has a longer service life compared to the cantilever beam piezoelectric collection device. In addition, by squeezing the inner wall of the piezoelectric part 100 with air, friction and rigid collision are not easily generated, thereby reducing damage to the piezoelectric part 100, thereby further improving the service life.

[0038] It should be noted that the ocean energy collection device of the embodiment of the present invention can also be used in rivers or lakes where the water surface can rise and fall periodically, and it only needs to be able to drive the float 300 to rise and fall periodically. In this embodiment, the piezoelectric part 100 can be installed on the seabed, the first adjustment part 201 can be installed on the seabed, or both the piezoelectric part 100 and the first adjustment part 201 can be installed on the seabed, and the piezoelectric part 100 and / or the first adjustment part 201 can be directly installed on the seabed, or installed on the seabed through other installation structures. Since the air in the cavity 101 needs to be reciprocatedly compressed, the cavity 101 does not need to be connected to the outside world except for being connected to the adjustment chamber 203.

[0039] In some embodiments of the present invention, Figure 1As shown, the second regulating part 202 is adapted to the regulating chamber 203 and can be installed in the regulating chamber 203 so as to slide up and down. Driven by the periodic fluctuation of the waves, the floating body 300 will rise and fall periodically, and the floating body 300 will then drive the second regulating part 202 to slide up and down along the inner wall of the regulating chamber 203, thereby reciprocatingly compressing the air in the regulating chamber 203 and the cavity 101, and the operation is simple and convenient. It should be noted that the second regulating part 202 is adapted to the regulating chamber 203, that is, the outer wall of the second regulating part 202 is adapted to the inner wall of the regulating chamber 203, thereby improving the sealing performance of the regulating chamber 203, thereby not only improving the compression effect of the air, but also preventing seawater from entering the cavity 101. It should be noted that the second adjusting part 202 can also be a hollow structure with one end open, the inner wall of the second adjusting part 202 is adapted to the outer wall of the first adjusting part 201, the second adjusting part 202 is sleeved outside the first adjusting part 201 and forms a relatively sealed structure with the first adjusting part 201, and the second adjusting part 202 can also reciprocately compress the air in the adjusting chamber 203 and the cavity 101 when it moves up and down relative to the first adjusting part 201.

[0040] In some embodiments of the present invention, Figure 1 As shown, the top of the regulating cavity 203 is provided with a through hole 204, the floating body 300 is located above the first regulating part 201, and the floating body 300 is provided with a connecting part 301 passing through the through hole 204 and connected to the second regulating part 202. Then the first regulating part 201 can be located below the sea surface, the connecting part 301 is provided at the bottom of the floating body 300, and the bottom end of the connecting part 301 passes through the through hole 204 and is connected to the second regulating part 202. When the sea level rises, the floating body 300 moves upward, thereby driving the second regulating part 202 to move upward. When the sea level drops, the second regulating part 202 will move downward under the action of the cohesive force of the seawater, its own gravity, the gravity of the connecting part 301 and the gravity of the floating body 300, thereby compressing the air in the cavity 101 to achieve power generation. It should be noted that the top of the first adjusting portion 201 can also be extended out of the sea surface, and the top of the first adjusting portion 201 can be extended horizontally to above the floating body 300, and the through hole 204 is set on the first adjusting portion 201 above the floating body 300 and the opening is downward, and the connecting portion 301 is set at the upper end of the floating body 300, and the top of the connecting portion 301 passes through the through hole 204 upward and connects to the second adjusting portion 202. In this case, the second adjusting portion 202 is located above the sea surface, which can not only reduce seawater corrosion, but also prevent seawater from entering the cavity 101. The connecting portion 301 can be a rod-shaped structure or a long strip of plate-shaped structure or a tubular structure.

[0041] In some embodiments of the present invention, Figure 1As shown, the adjustment cavity 203 is a vertically arranged cylindrical structure. Accordingly, the second adjustment portion 202 is also arranged as a cylindrical structure or a flat circular plate structure, thereby reducing the stress concentration phenomenon between the second adjustment portion 202 and the adjustment cavity 203, so that the second adjustment portion 202 slides more smoothly. Of course, the adjustment cavity 203 can also be other shapes, for example, it can also be a vertically arranged rectangular parallelepiped structure.

[0042] In some embodiments of the present invention, Figure 1 As shown, an annular baffle 205 is circumferentially arranged at the top of the inner wall of the adjustment cavity 203, and the connecting portion 301 passes through the annular baffle 205. The annular baffle 205 can prevent the second adjustment portion 202 from slipping off the top of the adjustment cavity 203 during the sliding process.

[0043] In some embodiments of the present invention, Figure 1 As shown, the first adjustment part 201 is arranged at the upper end of the piezoelectric part 100, and the bottom end of the adjustment cavity 203 is connected to the top end of the cavity 101. In this case, the bottom end of the piezoelectric part 100 can be installed on the seabed, and the first adjustment part 201 is installed on the upper end of the piezoelectric part 100 at a set distance above the seabed, thereby making the required length of the connecting part 301 shorter, saving materials and reducing the structural strength required for the connecting part 301. It should be noted that the first adjustment part 201 can also be arranged on one side of the piezoelectric part 100.

[0044] In some embodiments of the present invention, the inner diameter of the first adjusting portion 201 is larger than the inner diameter of the piezoelectric portion 100 , thereby preventing the second adjusting portion 202 from sliding from the adjusting cavity 203 into the cavity 101 and damaging the piezoelectric portion 100 .

[0045] In some embodiments of the present invention, Figure 1As shown, an elastic reset member 400 is provided between the second adjustment portion 202 and the bottom end of the cavity 101. The elastic reset member 400 can not only play a limiting role, that is, when the second adjustment portion 202 slides downward to the set position and continues to slide downward, the elastic reset member 400 is compressed, thereby providing an upward restoring force, and the restoring force plays a buffering role, which can not only prevent the second adjustment portion 202 from sliding down too fast, but also prevent the second adjustment portion 202 from sliding down too much, causing excessive pressure in the cavity 101 and damaging the piezoelectric portion 100. When the second adjustment portion 202 slides upward to the set position and continues to slide upward, the elastic reset member 400 is stretched, thereby providing a downward restoring force, and the restoring force plays a buffering role, which can not only prevent the second adjustment portion 202 from sliding up too fast, but also prevent the second adjustment portion 202 from sliding up too much, causing excessive negative pressure in the cavity 101 and damaging the piezoelectric portion 100. In addition, in the initial state when the second adjusting portion 202 starts to slide downward or the initial state when it starts to slide upward, the elastic return member 400 can provide an initial force, so that the sliding of the second adjusting portion 202 is smoother.

[0046] In some embodiments of the present invention, the elastic reset member 400 is a spring. The spring is affordable, widely available, has a long service life, and has a good elastic effect, thereby generating a large elastic restoring force. It is understandable that the elastic reset member 400 can also be an elastic rubber.

[0047] In some embodiments of the present invention, Figure 1 As shown, the piezoelectric part 100 is a piezoelectric circular tube, and the piezoelectric polarization direction of the piezoelectric part 100 is radial. When the first adjustment part 201 is arranged at the upper end of the piezoelectric part 100, the piezoelectric part 100 can be a piezoelectric circular tube arranged vertically and closed at the bottom, and the piezoelectric polarization direction of the piezoelectric part 100 is radial. The bottom end of the cavity 101 can be closed by a closing plate 102, or it can be an integrally formed piezoelectric part 100 with a closed bottom. The piezoelectric part 100 is arranged as a circular tubular structure, and when the inner wall is squeezed by air, the force and deformation direction are radial, and the piezoelectric polarization direction of the piezoelectric part 100 is also radial, thereby making the power generation effect of the piezoelectric part 100 better.

[0048] In some embodiments of the present invention, Figure 1 As shown, a fixing portion 500 is provided at the bottom of the piezoelectric part 100, and the fixing portion 500 is used to be installed on the seabed. The fixing portion 500 can be arranged horizontally, and the edge of the fixing portion 500 can extend in the horizontal direction. When the fixing portion 500 needs to be installed, the fixing portion 500 can be buried below the seabed, or stones can be pressed on the fixing portion 500, or the fixing portion 500 can be directly fixed to the seabed by fasteners such as bolts. The fixing portion 500 is provided to make it more convenient and firm to install the piezoelectric part 100 on the seabed.

[0049] In some embodiments of the present invention, the floating body 300 is made of foam material. Foam can not only float on the sea surface, but also is affordable, widely available and easy to process, and is a better material for preparing the floating body 300. It should be noted that the floating body 300 can also be made of other materials, for example, it can also be made of wood or plastic, as long as the density is smaller than the density of seawater.

[0050] In some embodiments of the present invention, a protective layer is coated on the outer wall of the piezoelectric part 100, and the protective layer is used to prevent seawater corrosion. The protective layer isolates the piezoelectric part 100 from seawater, thereby preventing the piezoelectric part 100 from being corroded by seawater. The protective layer can be made of a material that is resistant to seawater corrosion, such as fiberglass and titanium alloy. In addition, the fixing part 500, the first adjusting part 201, the second adjusting part 202 and the connecting part 301 can all be made of a material that is resistant to seawater corrosion.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0052] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An ocean energy collection device, characterized in that: include: A piezoelectric portion (100), wherein a cavity (101) is provided in the piezoelectric portion (100); The regulating mechanism (200) comprises a first regulating part (201) and a second regulating part (202), wherein the first regulating part (201) is connected to the piezoelectric part (100), a regulating cavity (203) communicating with the cavity (101) is arranged in the first regulating part (201), and the second regulating part (202) and the first regulating part (201) are mutually sleeved and can move up and down relative to the first regulating part (201) so as to reciprocately compress the air in the regulating cavity (203) and the cavity (101); A floating body (300) connected to the second adjusting part (202) to control the movement of the second adjusting part (202); The second adjustment portion (202) is adapted to the adjustment cavity (203) and is installed in the adjustment cavity (203) in a manner capable of sliding up and down; A through hole (204) is provided at the top of the regulating cavity (203); the floating body (300) is located above the first regulating part (201); and a connecting part (301) is provided on the floating body (300) that passes through the through hole (204) and is connected to the second regulating part (202); An annular baffle (205) is provided at the top end of the inner side wall of the regulating cavity (203) along the circumferential direction, and the connecting portion (301) passes through the annular baffle (205); The first adjustment part (201) is arranged at the upper end of the piezoelectric part (100), and the bottom end of the adjustment cavity (203) is connected to the top end of the cavity (101); An elastic reset member (400) is provided between the second adjustment portion (202) and the bottom end of the cavity (101); The piezoelectric part (100) is a piezoelectric circular tube, and the piezoelectric polarization direction of the piezoelectric part (100) is radial.

2. The ocean energy collection device according to claim 1, characterized in that: The regulating cavity (203) is a vertically arranged cylindrical structure.

3. The ocean energy collection device according to claim 1, characterized in that: The elastic return element (400) is a spring.

4. The ocean energy collection device according to claim 1, characterized in that: A fixing part (500) is provided at the bottom end of the piezoelectric part (100), and the fixing part (500) is used for being installed on the seabed.

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