CN112628058A - Ocean energy collection device - Google Patents

Ocean energy collection device Download PDF

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Publication number
CN112628058A
CN112628058A CN202011403697.9A CN202011403697A CN112628058A CN 112628058 A CN112628058 A CN 112628058A CN 202011403697 A CN202011403697 A CN 202011403697A CN 112628058 A CN112628058 A CN 112628058A
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CN
China
Prior art keywords
piezoelectric
cavity
adjusting
adjustment
energy harvesting
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Pending
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CN202011403697.9A
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Chinese (zh)
Inventor
包斌
王泉
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Southern University of Science and Technology
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Southern University of Science and Technology
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Publication date
Application filed by Southern University of Science and Technology filed Critical Southern University of Science and Technology
Priority to CN202011403697.9A priority Critical patent/CN112628058A/en
Publication of CN112628058A publication Critical patent/CN112628058A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
    • F03B13/16—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
    • F03B13/18—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
    • F03B13/1805—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem
    • F03B13/181—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for limited rotation
    • F03B13/1815—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for limited rotation with an up-and-down movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • H02N2/185—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using fluid streams
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

The invention discloses an ocean energy collecting device which comprises a piezoelectric part, an adjusting mechanism and a floating body, wherein a cavity is arranged in the piezoelectric part, the adjusting mechanism comprises a first adjusting part and a second adjusting part, the first adjusting part is connected with the piezoelectric part, an adjusting cavity communicated with the cavity is arranged in the first adjusting part, the second adjusting part and the first adjusting part are mutually sleeved and can move up and down relative to the first adjusting part so as to be used for carrying out reciprocating compression on air in the adjusting cavity and the cavity, and the floating body is connected with the second adjusting part so as to be used for controlling the second adjusting part to move. According to the ocean energy collecting device provided by the embodiment of the invention, the use is more convenient, and the service life is longer.

Description

Ocean energy collection device
Technical Field
The invention relates to a power generation device, in particular to an ocean energy collection device.
Background
The ocean is a general term of the widest water body on the earth, contains abundant energy such as wave energy, tidal energy and the like, and how to fully convert energy in the ocean into electric energy for human use is a problem which needs to be solved urgently. Therefore, ocean energy harvesting is also becoming one of the leading-edge hot spot technologies of common interest in academia and industry.
The piezoelectric energy acquisition device is one of ocean energy acquisition devices, and mainly comprises a center frame and a plurality of cantilever beams arranged on the center frame, wherein mass blocks are arranged at the free ends of the cantilever beams, and piezoelectric bodies are arranged at the joints of the cantilever beams and the center frame. The existing piezoelectric energy collecting device has the following defects: because the cantilever beam is always subjected to the gravity action of the mass block when being statically placed, the cantilever beam and the piezoelectric body are always in a bending state, and the cantilever beam and the piezoelectric body can generate fatigue in long-time work, so that the service lives of the cantilever beam and the piezoelectric body are greatly shortened.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the ocean energy collecting device is more convenient to use and longer in service life.
The ocean energy collecting device according to the embodiment of the invention comprises:
a piezoelectric portion having a cavity therein;
the adjusting mechanism comprises a first adjusting part and a second adjusting part, the first adjusting part is connected with the piezoelectric part, an adjusting cavity communicated with the cavity is arranged in the first adjusting part, and the second adjusting part and the first adjusting part are mutually sleeved and can move up and down relative to the first adjusting part so as to be used for compressing air in the adjusting cavity and the cavity in a reciprocating manner;
the floating body is connected with the second adjusting part and used for controlling the second adjusting part to move.
The ocean energy collecting device provided by the embodiment of the invention at least has the following technical effects:
when the ocean energy collecting device provided by the embodiment of the invention is used, the piezoelectric part and/or the first adjusting part are/is arranged on the sea bottom, the floating body is floated on the sea surface, the floating body can periodically fluctuate up and down under the drive of the periodic fluctuation of sea waves, the floating body further controls the second adjusting part to move up and down in a reciprocating manner relative to the first adjusting part, the air in the adjusting cavity can be compressed in a reciprocating manner in the reciprocating movement process of the second adjusting part, the air in the cavity can extrude the inner side wall of the piezoelectric part in a reciprocating manner, and according to the piezoelectric effect, the piezoelectric part can generate electric energy when being extruded in a reciprocating manner, namely, the mechanical energy can be converted into electric energy, so as to generate electricity. According to the ocean energy acquisition device provided by the embodiment of the invention, the installation and the use are convenient, and the service life is longer compared with that of a cantilever beam type piezoelectric acquisition device.
According to some embodiments of the invention, the second adjusting part is adapted to the adjusting cavity and is slidably mounted in the adjusting cavity up and down.
According to some embodiments of the invention, the top end of the adjusting cavity is provided with a through hole, the floating body is positioned above the first adjusting part, and the floating body is provided with a connecting part which passes through the through hole and is connected with the second adjusting part.
According to some embodiments of the invention, the adjustment chamber is a vertically arranged cylindrical structure.
According to some embodiments of the invention, the top end of the inner side wall of the adjusting cavity is circumferentially provided with an annular baffle, and the connecting part penetrates through the annular baffle.
According to some embodiments of the invention, the first adjustment part is disposed at an upper end of the piezoelectric part, and a bottom end of the adjustment chamber communicates with a top end of the cavity.
According to some embodiments of the invention, an inner diameter dimension of the first regulating portion is larger than an inner diameter dimension of the piezoelectric portion.
According to some embodiments of the invention, an elastic restoring member is disposed between the second adjusting portion and the bottom end of the cavity.
According to some embodiments of the invention, the resilient return member is a spring.
According to some embodiments of the invention, the piezoelectric portion is a piezoelectric circular tube, and a piezoelectric polarization direction of the piezoelectric portion is a radial direction.
According to some embodiments of the invention, the bottom end of the piezoelectric portion is provided with a fixing portion for mounting on the seabed
According to some embodiments of the invention, the connecting portion is a vertically arranged rod-like structure.
According to some embodiments of the invention, the float is made of a foam material.
According to some embodiments of the invention, the outer side wall of the piezoelectric portion is coated with a protective layer for preventing seawater corrosion.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of the overall structure of the present invention;
reference numerals:
a piezoelectric part 100, a cavity 101, and a closing plate 102; the adjusting mechanism 200, the first adjusting part 201, the second adjusting part 202, the adjusting cavity 203, the through hole 204 and the annular baffle plate 205; a float 300, a connecting portion 301; an elastic restoring member 400; a fixing portion 500.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A marine energy harvesting device according to an embodiment of the present invention is described below with reference to fig. 1.
The ocean energy collecting device according to the embodiment of the invention, as shown in fig. 1, comprises:
a piezoelectric part 100, wherein a cavity 101 is arranged in the piezoelectric part 100;
the adjusting mechanism 200 comprises a first adjusting part 201 and a second adjusting part 202, the first adjusting part 201 is connected with the piezoelectric part 100, an adjusting cavity 203 communicated with the cavity 101 is arranged in the first adjusting part 201, and the second adjusting part 202 and the first adjusting part 201 are mutually sleeved and can move up and down relative to the first adjusting part 201 so as to be used for compressing air in the adjusting cavity 203 and the cavity 101 in a reciprocating manner;
and a float 300 connected to the second adjustment part 202 for controlling the movement of the second adjustment part 202.
When the ocean energy collecting device of the embodiment of the invention is needed, the piezoelectric part 100 and/or the first adjusting part 201 are/is arranged on the sea bottom, the floating body 300 is floated on the sea surface, the floating body 300 can periodically fluctuate under the drive of the periodic fluctuation of the sea waves, the floating body 300 further controls the second adjusting part 202 to move up and down in a reciprocating manner relative to the first adjusting part 201, the air in the adjusting cavity 203 can be compressed in a reciprocating manner in the reciprocating movement process of the second adjusting part 202, since the adjusting cavity 203 is communicated with the cavity 101 in the piezoelectric portion 100, the air in the cavity 101 can be compressed back and forth during the reciprocating movement of the second adjusting portion 202, the air in the cavity 101 can press the inner side wall of the piezoelectric portion 100 back and forth, according to the piezoelectric effect, the piezoelectric portion 100 generates electric energy when being reciprocally pressed, that is, converts mechanical energy into electric energy, thereby generating electricity. According to the ocean energy collecting device provided by the embodiment of the invention, the installation and the use are convenient, the service life is longer compared with that of a cantilever beam type piezoelectric collecting device, in addition, the inner side wall of the piezoelectric part 100 is extruded through air, the friction and the rigid collision are not easy to generate, the damage to the piezoelectric part 100 can be further reduced, and the service life can be further prolonged.
It should be noted that the ocean energy collecting device according to the embodiment of the present invention may also be used in rivers or lakes where the water surface can periodically fluctuate, and only needs to drive the floating body 300 to periodically fluctuate up and down. In this embodiment, the piezoelectric part 100 may be mounted on the seabed, the first adjustment part 201 may be mounted on the seabed, both the piezoelectric part 100 and the first adjustment part 201 may be mounted on the seabed, and the piezoelectric part 100 and/or the first adjustment part 201 may be directly mounted on the seabed, or may be mounted on the seabed through another mounting structure. Since the air in the cavity 101 needs to be compressed back and forth, the cavity 101 does not need to communicate with the outside except for the regulation chamber 203.
In some embodiments of the present invention, as shown in fig. 1, the second adjustment portion 202 is adapted to the adjustment cavity 203 and slidably mounted in the adjustment cavity 203 up and down. The floating body 300 is driven by the periodic fluctuation of the sea waves to periodically fluctuate, and the floating body 300 further drives the second adjusting part 202 to slide up and down along the inner side wall of the adjusting cavity 203, so that the air in the adjusting cavity 203 and the air in the cavity 101 are compressed in a reciprocating manner, and the operation is simple and convenient. It should be noted that the second adjustment portion 202 is adapted to the adjustment cavity 203, that is, the outer side wall of the second adjustment portion 202 is adapted to the inner side wall of the adjustment cavity 203, so that the sealing performance of the adjustment cavity 203 can be improved, and thus not only the compression effect of air can be improved, but also seawater can be prevented from entering the cavity 101. It should be noted that the second adjusting portion 202 may also be a hollow structure with an opening at one end, the inner side wall of the second adjusting portion 202 is adapted to the outer side wall of the first adjusting portion 201, the second adjusting portion 202 is sleeved outside the first adjusting portion 201 and forms a relatively sealed structure with the first adjusting portion 201, and the second adjusting portion 202 can also compress the air in the adjusting cavity 203 and the cavity 101 to and fro when moving up and down relative to the first adjusting portion 201.
In some embodiments of the present invention, as shown in fig. 1, a through hole 204 is formed at the top end of the adjustment cavity 203, a floating body 300 is positioned above the first adjustment part 201, and a connection part 301 passing through the through hole 204 and connecting the second adjustment part 202 is formed on the floating body 300. And then first regulation part 201 can be located below the sea surface, connecting part 301 is set up in the bottom of body 300, and the bottom of connecting part 301 passes through-hole 204 and connects second regulation part 202. When the sea surface rises, the floating body 300 moves upwards to drive the second adjusting part 202 to move upwards, and when the sea surface descends, the second adjusting part 202 moves downwards under the action of the bonding force of the sea water, the gravity of the second adjusting part, the gravity of the connecting part 301 and the gravity of the floating body 300, so that the air in the cavity 101 is compressed, and power generation is realized. In this case, the top end of the first adjustment part 201 may extend out of the sea surface, the top end of the first adjustment part 201 may extend to the upper side of the floating body 300 in the horizontal direction, the through hole 204 may be disposed on the first adjustment part 201 above the floating body 300 with its opening facing downward, the connection part 301 may be disposed at the upper end of the floating body 300, and the top end of the connection part 301 may pass through the through hole 204 and connect with the second adjustment part 202, in which case, the second adjustment part 202 may be located above the sea surface, thereby reducing seawater corrosion and preventing seawater from entering the cavity 101. The connecting portion 301 may be a rod-shaped structure or an elongated plate-shaped structure or a tubular structure.
In some embodiments of the present invention, as shown in FIG. 1, the conditioning chamber 203 is a vertically disposed cylindrical structure. Correspondingly, the second adjusting portion 202 is also configured to be a cylindrical structure or a flat circular plate-shaped structure, so that the stress concentration phenomenon between the second adjusting portion 202 and the adjusting cavity 203 can be reduced, and the second adjusting portion 202 can slide smoothly. Of course, the adjustment cavity 203 may have other shapes, for example, a rectangular parallelepiped structure disposed vertically.
In some embodiments of the present invention, as shown in fig. 1, the top end of the inner side wall of the adjusting cavity 203 is circumferentially provided with an annular baffle 205, and the connecting portion 301 passes through the annular baffle 205. An annular baffle plate 205 is provided to prevent the second regulating part 202 from slipping off the top end of the regulating chamber 203 during sliding.
In some embodiments of the present invention, as shown in fig. 1, the first regulating part 201 is disposed at the upper end of the piezoelectric part 100, and the bottom end of the regulating cavity 203 communicates with the top end of the cavity 101. In this case, the bottom end of the piezoelectric part 100 may be installed on the seabed, and the first adjustment part 201 may be installed on the upper end of the piezoelectric part 100 above the seabed by a set distance, so that the required length of the connection part 301 may be shorter, thereby saving materials and reducing the structural strength required for the connection part 301. The first adjustment portion 201 may be provided on one side of the piezoelectric portion 100.
In some embodiments of the present invention, the inner diameter dimension of the first adjustment part 201 is larger than the inner diameter dimension of the piezoelectric part 100. Further, the second adjustment part 202 can be prevented from sliding from the adjustment chamber 203 into the cavity 101 to damage the piezoelectric part 100.
In some embodiments of the present invention, as shown in fig. 1, an elastic restoring member 400 is disposed between the second adjusting portion 202 and the bottom end of the cavity 101. The elastic restoring member 400 not only can play a limiting role, that is, when the second adjustment portion 202 slides downwards to the set position and then continues to slide downwards, the elastic restoring member 400 is compressed to provide an upward restoring force, and the restoring force plays a role in buffering, so that not only can the second adjustment portion 202 be prevented from sliding too fast, but also the piezoelectric portion 100 can be prevented from being damaged due to the fact that the second adjustment portion 202 slides too much and the pressure in the cavity 101 is too large. When the second adjustment portion 202 slides upward to the set position and then continues to slide upward, the elastic restoring member 400 is elongated to provide a downward restoring force, which acts as a buffer, so as to prevent the second adjustment portion 202 from sliding too fast, and prevent the piezoelectric portion 100 from being damaged due to excessive negative pressure in the cavity 101 caused by excessive sliding of the second adjustment portion 202. In addition, in the initial state where the second adjustment portion 202 starts to slide downward or in the initial state where the second adjustment portion 202 starts to slide upward, the elastic restoring member 400 can provide an initial force, so that the second adjustment portion 202 can slide more smoothly.
In some embodiments of the present invention, the elastic restoring member 400 is a spring. The spring has the advantages of low price, wide source, long service life, good elastic effect and large generated elastic restoring force. It is understood that the elastic restoring member 400 may also be elastic rubber.
In some embodiments of the present invention, as shown in fig. 1, the piezoelectric portion 100 is a piezoelectric circular tube, and the piezoelectric polarization direction of the piezoelectric portion 100 is a radial direction. When the first adjustment portion 201 is disposed at the upper end of the piezoelectric portion 100, the piezoelectric portion 100 may be a piezoelectric circular tube which is vertically disposed and has a closed bottom end, and the piezoelectric polarization direction of the piezoelectric portion 100 is a radial direction. The bottom end of the cavity 101 may be closed by a closing plate 102, or may be integrally formed as a piezoelectric portion 100 whose bottom end is closed. The piezoelectric part 100 is arranged in a circular tube structure, when the inner side wall is extruded by air, the stress and deformation directions are radial, and the piezoelectric polarization direction of the piezoelectric part 100 is also radial, so that the power generation effect of the piezoelectric part 100 is better.
In some embodiments of the present invention, as shown in fig. 1, the bottom end of the piezoelectric portion 100 is provided with a fixing portion 500, and the fixing portion 500 is used for being installed on the seabed. The fixing part 500 may be horizontally disposed, and an edge of the fixing part 500 may extend in a horizontal direction. When the fixing part 500 needs to be installed, the fixing part 500 may be buried under the sea floor, a stone may be pressed against the fixing part 500, or the fixing part 500 may be directly fixed to the sea floor by a fastening member such as a bolt. The fixing portion 500 is provided to facilitate and secure the installation of the piezoelectric portion 100 on the seabed.
In some embodiments of the invention, the float 300 is made of a foam material. The foam can float on the sea surface, is low in price, wide in source and convenient to process, and is a better material for preparing the floating body 300. It should be noted that the floating body 300 may also be made of other materials, for example, wood blocks or plastics, and only needs to have a density less than that of seawater.
In some embodiments of the present invention, the outer side wall of the piezoelectric portion 100 is coated with a protective layer for preventing seawater corrosion. The protective layer isolates the piezoelectric unit 100 from seawater, thereby preventing the piezoelectric unit 100 from being corroded by seawater. The protective layer can be made of materials for preventing seawater corrosion, such as glass fiber reinforced plastics, titanium alloy and the like. In addition, the fixing portion 500, the first adjustment portion 201, the second adjustment portion 202, and the connection portion 301 may be made of a material that is resistant to seawater corrosion.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An ocean energy harvesting device, comprising:
a piezoelectric part (100), wherein a cavity (101) is arranged in the piezoelectric part (100);
the adjusting mechanism (200) comprises a first adjusting part (201) and a second adjusting part (202), the first adjusting part (201) is connected with the piezoelectric part (100), an adjusting cavity (203) communicated with the cavity (101) is arranged in the first adjusting part (201), and the second adjusting part (202) and the first adjusting part (201) are mutually sleeved and can move up and down relative to the first adjusting part (201) so as to be used for compressing air in the adjusting cavity (203) and the cavity (101) to and fro;
a float (300) connected to the second adjustment part (202) for controlling the second adjustment part (202) to move.
2. The ocean energy harvesting device of claim 1 wherein the second adjustment portion (202) is adapted to the adjustment chamber (203) and slidably mounted up and down within the adjustment chamber (203).
3. The ocean energy harvesting device according to claim 2 wherein the top end of the adjustment cavity (203) is provided with a through hole (204), the floating body (300) is positioned above the first adjustment part (201), and the floating body (300) is provided with a connecting part (301) which passes through the through hole (204) and is connected with the second adjustment part (202).
4. A marine energy harvesting device according to claim 3, wherein the conditioning chamber (203) is a vertically arranged cylindrical structure.
5. The ocean energy harvesting device of claim 4 wherein the top end of the inner side wall of the adjustment chamber (203) is circumferentially provided with an annular baffle (205), the connecting portion (301) passing through the annular baffle (205).
6. Marine energy harvesting apparatus according to any one of claims 1 to 5, characterised in that the first adjustment section (201) is provided at an upper end of the piezoelectric section (100), and a bottom end of the adjustment chamber (203) communicates with a top end of the cavity (101).
7. Marine energy harvesting device according to claim 6, characterised in that an elastic return member (400) is arranged between the second adjustment part (202) and the bottom end of the cavity (101).
8. The marine energy harvesting device of claim 7, wherein the resilient return member (400) is a spring.
9. The ocean energy harvesting device of any one of claims 1 to 5 wherein the piezoelectric portion (100) is a piezoelectric circular tube and the piezoelectric polarization direction of the piezoelectric portion (100) is radial.
10. Marine energy harvesting apparatus according to any one of claims 1 to 5, characterised in that the bottom end of the piezoelectric section (100) is provided with a fixing section (500), the fixing section (500) being for mounting on the seabed.
CN202011403697.9A 2020-12-04 2020-12-04 Ocean energy collection device Pending CN112628058A (en)

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Application Number Priority Date Filing Date Title
CN202011403697.9A CN112628058A (en) 2020-12-04 2020-12-04 Ocean energy collection device

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Application Number Priority Date Filing Date Title
CN202011403697.9A CN112628058A (en) 2020-12-04 2020-12-04 Ocean energy collection device

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CN112628058A true CN112628058A (en) 2021-04-09

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CN202011403697.9A Pending CN112628058A (en) 2020-12-04 2020-12-04 Ocean energy collection device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114370367A (en) * 2022-01-20 2022-04-19 海南大学 Multi-floater type wave power generation device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114370367A (en) * 2022-01-20 2022-04-19 海南大学 Multi-floater type wave power generation device

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