Archimedes type ocean energy collecting device and hydrological monitoring station

Abstract

The invention relates to the field of new energy power generation, in particular to an Archimedes type ocean energy collecting device and a hydrological monitoring station. The device comprises a floating body and a set of thin plate contact separation type TENG. The floating body is installed below a water body and can move up and down along with fluctuation, and then the thin plate loaded in the floating body is driven to make contact with the separation type TENG to generate power. The floating body comprises a silo, a floating barrel and an elastic annular waterproof belt connecting the silo and the floating barrel. The silo is upwards inserted into the buoy, and the waterproof belt is connected with the buoy and the silo to form a closed columnar cavity. The thin plate contact separation type TENG is installed in the columnar cavity and comprises a fixing mechanism, a connecting rod, a plurality of circular friction discs and a plurality of electrode discs. The friction discs and the electrode discs are alternately arranged in parallel in the axial direction of the columnar cavity. The friction disc and the electrode disc are respectively fixed on the buoy and the silo; the problem that an existing friction nanometer generator is not suitable for application scenes such as deep water is solved.

Description

Technical Field

[0001] The present invention relates to the field of renewable energy power generation, and in particular to an Archimedean ocean energy collection device and a hydrological monitoring station. Background Art

[0002] In the context of the increasingly severe energy crisis, traditional energy sources such as oil, coal, natural gas and other high-quality low-entropy energy can no longer meet human demand for energy use, and the exploration of renewable energy has become one of the important challenges for sustainable energy development. At present, people are in urgent need of some alternative energy sources such as wind energy, ocean energy and other green energy in nature.

[0003] There is a lot of energy (including potential energy and kinetic energy) below the sea level. Existing electromagnetic generators have a good response to high frequencies and are suitable for generating electricity using wave energy in high velocity areas, but have a poor response to low frequencies in low velocity areas. Based on this, technicians have developed new friction nanogenerators (TENGs), which are a new type of generator that uses the frictional electrification effect between materials to generate electricity. This type of generator can generate electricity using low-frequency wave energy, and can therefore be widely used in small devices that need to be self-powered.

[0004] Considering that the generator usually needs to deploy rotating structures such as impellers and wind cups to drive the friction material to rotate and generate electricity, the waterproof and sealing performance of the equipment is relatively insufficient. Once water enters the generator, it may cause failure. Therefore, existing friction nanogenerators usually need to be deployed above the water body or in shallow water areas. This limits the application of such generators in special scenarios. Summary of the invention

[0005] In order to solve the problem that the existing friction nanogenerator is not suitable for application scenarios such as deep water, the present invention provides an Archimedean ocean energy collection device and a hydrological monitoring station.

[0006] The technical solution provided by the present invention includes the following contents:

[0007] An Archimedean ocean energy collection device includes a floating body and a group of thin-plate contact-separation TENGs contained therein. The floating body is installed below the water body and can move with the fluctuations, thereby driving the thin-plate contact-separation TENG loaded inside the floating body to generate electricity.

[0008] Specifically, the floating body includes a silo, a buoy, and an elastic annular waterproof belt connecting the two. The silo is a cylindrical structure with an opening upward, and includes a first cavity therein. The buoy is a cylindrical structure with an opening upward, and includes a second cavity therein. The size of the second cavity is larger than the silo, and the silo is inserted upward into the second cavity in the buoy. The upper edge of the waterproof belt is sealed with the buoy, and the lower edge is sealed with the silo, thereby forming a closed columnar chamber in the buoy. The columnar chamber is pre-pressurized to maintain the initial shape of the floating body.

[0009] The thin plate contact separation type TENG is installed in a cylindrical chamber, which includes a fixing mechanism, a connecting rod, and multiple circular friction discs and electrode discs. A friction layer is arranged on the surface of the friction disc, and an electrode layer is arranged on the surface of the electrode disc. The friction layer and the electrode layer are made of two materials with different electronegativity. The friction disc and the electrode disc are respectively arranged alternately and parallelly along the axial direction of the cylindrical chamber. In the present invention, a through hole is provided in the center of the friction disc and the electrode disc, and the through hole on one disc body is larger than that on the other. The top end of the connecting rod is fixedly connected to the top inside the float, and the other end is inserted into the through hole of the friction disc and the electrode disc, and is fixedly connected to a disc body with a smaller through hole. The disc bodies with larger through holes in the friction disc and the electrode disc are respectively connected in the silo by fixing mechanisms. In the scheme of the present invention, the outer diameter of the connecting rod is smaller than the diameter of the through hole in the disc body with a larger through hole, thereby allowing the corresponding disc body to move up and down along the axial direction of the connecting rod.

[0010] The silo of the Archimedean ocean energy collection device provided by the present invention is fixedly connected to a base below the water body. In the entire device, the buoyancy of the combination of the float, the connecting rod, and the friction disk or electrode disk connected thereto in the water body is greater than the gravity. When the float moves with the waves in the water body, it drives the friction disk and the electrode disk in the thin plate contact separation type TENG to contact and separate, so that charge transfer occurs between the electrode layer and the friction layer, and then generates electrical energy output on the electrode disk.

[0011] As a further improvement of the present invention, the annular waterproof belt is made of silicone, rubber, resin or other wear-resistant flexible film materials.

[0012] As a further improvement of the present invention, the silo and the buoy are both barrel-shaped, and the first cavity and the second cavity therein are cylindrical.

[0013] and / or

[0014] An annular base with a size larger than the inner diameter of the second cavity in the buoy is provided at the bottom of the silo.

[0015] and / or

[0016] A straw hat-shaped floating platform is arranged on the top of the buoy; the outer diameter of the floating platform is larger than the outer diameter of the buoy.

[0017] As a further improvement of the present invention, the buoy is made of lightweight material.

[0018] and / or

[0019] An air cavity is provided in the side wall and / or the top buoy of the buoy to provide lift underwater.

[0020] As a further improvement of the present invention, each friction disk in the thin-plate contact separation type TENG is fixedly connected to the float through a connecting rod, and each electrode disk is fixedly connected to the silo through a fixing mechanism.

[0021] or

[0022] Each electrode disk in the thin-plate contact-separation TENG is fixedly connected to the float through a connecting rod, and each friction disk is fixedly connected to the silo through a fixing mechanism.

[0023] As a further improvement of the present invention, the friction discs or electrode discs are arranged at equal intervals on the connecting rod; the electrode discs or friction discs are arranged at equal intervals on the fixing mechanism; and the distance between any two adjacent friction discs is equal to the distance between any two adjacent electrode discs.

[0024] As a further improvement of the present invention, a one-way air valve connected to the internal columnar chamber is further provided in the silo or float. The one-way air valve is used to pressurize the columnar chamber to pre-adjust the initial positions of each friction disk and the adjacent electrode disk in the thin plate contact separation TENG, and make each friction disk and each electrode disk close to but not in contact in the initial state.

[0025] As a further improvement of the present invention, both the front and back sides of the friction disc are provided with friction layers, and the friction layers are made of dielectric materials, including FEP, PVDF, and PETT.

[0026] and / or

[0027] The electrode disk has electrode layers on both the front and back sides, and the electrode layers are made of conductive materials, including gold, silver, copper, iron, aluminum, and any other single metal or alloy material.

[0028] and / or

[0029] In the thin-plate contact separation type TENG, the electrode layers on the upper surfaces of each electrode layer are electrically connected to each other to form a first electrode, and the electrode layers on the lower surfaces of each electrode layer are electrically connected to each other to form a second electrode. The first electrode and the second electrode serve as the power output ports of the thin-plate contact separation type TENG.

[0030] As a further improvement of the present invention, the electrode layer comprises a copper film electrode and a nylon layer thereon.

[0031] and / or

[0032] The copper film electrode is also pre-charged with surface charge in the form of high voltage discharge.

[0033] The present invention also includes a hydrological monitoring station, which is used to monitor hydrological data in the water body. The hydrological detection station includes: an energy storage device, a variety of hydrological monitoring sensors, a communication module, a data processing module, a storage module, and an Archimedean ocean energy collection device as described above. On the one hand, the Archimedean ocean energy collection device serves as an energy harvesting device, which is used to directly power hydrological monitoring sensors, communication modules, and data processing modules, or to charge the energy storage device for indirect power supply. On the other hand, it serves as a state detection mechanism for water body wave energy, which is used to record a corresponding state signal when the output of the thin plate contact separation TENG exceeds a preset amplitude or frequency threshold; the state signal is used for hydrological analysis.

[0034] The technical solution provided by the present invention has the following beneficial effects:

[0035] The present invention provides a novel Archimedean ocean energy collection device comprising a floating body and a thin plate contact-separation TENG, wherein the buoy and silo in the floating body can circulate and approach with the ups and downs of the waves, thereby driving the thin plate contact-separation TENG inside the floating body to operate and generate electricity. Compared with conventional wave energy conversion devices, the product of the present invention can be completely immersed in water and has excellent concealment.

[0036] In addition, the ocean energy collection device provided by the present invention can not only be used to collect wave energy for power generation, but can also be used as a sensor system for underwater environment monitoring and data collection, and can be used to design and manufacture special self-powered hydrological monitoring equipment, thereby extending the service life of such equipment and reducing its maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the structure of the Archimedean ocean energy collection device after assembly provided in Example 1 of the present invention.

[0038] Figure 2 A schematic diagram of the half-section structure of the Archimedean ocean energy collection device provided in Example 1 of the present invention along a vertical plane.

[0039] Figure 3 This is a schematic diagram of the structure of the Archimedean ocean energy collection device after the annular waterproof belt is pulled out according to Example 1 of the present invention.

[0040] Figure 4 This is a schematic structural diagram of the silo and buoy parts of the Archimedean ocean energy collection device of Example 1 of the present invention.

[0041] Figure 5This is a structural explosion diagram of the Archimedean ocean energy collection device of Example 1 of the present invention.

[0042] Figure 6 This is a structural assembly diagram of the thin-plate contact-separation type TENG in Example 1 of the present invention.

[0043] Figure 7 It is a cross-sectional view of an Archimedean ocean energy collection device using a sleeve as a fixing mechanism in Example 1 of the present invention.

[0044] Figure 8 This is a cross-sectional view of an Archimedean ocean energy collection device using a vertical rod as a fixing mechanism in Example 1 of the present invention.

[0045] Fig. 9 It is a cross-sectional view of an Archimedean ocean energy collection device using a bracket as a fixing mechanism in Example 1 of the present invention.

[0046] Fig.10 This is a schematic diagram of the structure of the Archimedean ocean energy collection device with a one-way valve provided in Example 1 of the present invention.

[0047] The markings in the figure are:

[0048] 1. Floating body; 2. Thin plate contact separation TENG; 11. Silo; 12. Floating cylinder; 13. Annular waterproof belt; 21. Friction disk; 22. Electrode disk; 23. Connecting rod; 24. Fixing mechanism; 111. Annular base; 120. One-way air valve; 121. Floating platform. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0051] Example 1

[0052] This embodiment provides an Archimedean ocean energy collection device, such as Figure 1 and Figure 2As shown, it includes a float 1 and a group of thin-plate contact-separation type TENG 2 installed inside the float 1. A prominent advantage of the Archimedean ocean energy collection device of this embodiment is that it is a submersible friction nanogenerator. When used, the float 1 is installed below the water body and can move with the fluctuations, thereby driving the thin-plate contact-separation type TENG 2 loaded inside the float 1 to generate electricity. Since the generator can be completely hidden underwater, it can be applied to certain special application scenarios.

[0053] Specifically, Figure 3 As shown, the floating body 1 provided in this embodiment includes a silo 11, a buoy 12, and an annular waterproof belt 13 connecting the two. Figure 4 As shown, the silo 11 is a cylindrical structure with an opening upward, and includes a first cavity therein. The buoy 12 is a cylindrical structure with an opening upward, and includes a second cavity therein. The size of the second cavity is larger than the silo 11. In this embodiment, the silo 11 is inserted upward into the second cavity in the buoy 12. The connection between the two is equivalent to putting a large barrel (buoy 12) upside down on a small barrel (silo 11). It should be particularly noted that the scheme of the present invention does not limit the shape of the silo 11 and the buoy 12. In the specific scheme of this embodiment, the silo 11 and the buoy 12 are both barrel-shaped, and the first cavity and the second cavity therein are cylindrical. In other embodiments, the silo 11 and the buoy 12 may also adopt a barrel-shaped structure of a square barrel or other shapes. As long as the shapes of the two are similar, the silo 11 is allowed to be inserted into the buoy 12 and can be freely lifted and lowered. In addition, when the shape of the float 1 changes, the shapes of the electrode disk 22 and the friction disk 21 in the thin-plate contact-separation TENG 2 installed therein should also be adaptively adjusted.

[0054] In addition, in a more optimized solution of this embodiment, an annular base 111 having a size larger than the inner diameter of the second cavity in the buoy 12 is provided at the bottom of the silo 11. The annular base 111 serves as a counterweight for the silo 11, lowering the center of gravity of the silo 11 so that the silo 11 can maintain an upward opening as much as possible underwater. The annular base 111 and the body of the silo 11 can be an integrated structure or a detachable split structure. In actual products, the annular base 111 should be a solid structure and made of a relatively high-density material, such as metal or stone.

[0055] In the floating body 1 of the Archimedean ocean energy collection device provided in this embodiment, the silo 11 needs to remain sunken when in use, while the buoy 12 should remain floating when in use. Therefore, in a more optimized solution of this embodiment, a straw hat-shaped floating platform 121 is provided on the top of the buoy 12; the outer diameter of the floating platform 121 is larger than the outer diameter of the buoy 12. Figure 4It can be seen that the floating platform 121 in this embodiment includes a hat-brimmed annular plate and a hemispherical protrusion located on the annular plate. The functions of the floating platform 121 in this embodiment include two points: on the one hand, it increases the volume of the float 12 and increases the buoyancy of the float 12 and the load thereon under water. In order to enhance this effect, the float 12 and the floating platform 121 in this embodiment should be made of lightweight materials, such as light wood or various types of foamed resin materials, etc. In addition, when necessary, a hollow air cavity can be set in the side wall of the float 12 and / or the top of the floating platform 121, which is used to further increase the lift of the float 12 part under water. On the other hand, the contact area of ​​the float 12 with the water body in the vertical direction is increased by the annular plate in the floating platform 121, so that the float 12 can more effectively absorb the kinetic energy and potential energy in the water body, and float and dive with the flow of the water body.

[0056] The annular waterproof belt 13 in the floating body 1 provided in this embodiment is made of a flexible waterproof film with elasticity, and can be made of silicone, rubber, resin or other wear-resistant flexible film materials. Figure 3 It can be seen that the upper edge of the waterproof belt in the floating body 1 is sealed to the buoy 12, and the lower edge is sealed to the silo 11. The annular waterproof belt 13 can connect the upper buoy 12 and the lower silo 11 as a whole, thereby forming a closed columnar chamber in the floating body 1. In this combined state, when the buoy 12 descends relative to the silo 11, the annular waterproof belt 13 is compressed, folded and stored in the interlayer space between the buoy 12 and the silo 11, and the volume of the columnar cavity in the floating body 1 becomes smaller. When the buoy 12 rises relative to the silo 11, the annular waterproof belt 13 is fully or partially unfolded, and the space of the columnar cavity becomes larger. In particular, in the Archimedean ocean energy collection device provided in this embodiment, the columnar chamber is pre-pressurized to maintain the initial shape of the floating body 1.

[0057] The thin-plate contact-separation type TENG 2 of this embodiment is installed in a columnar chamber in the floating body 1. Figure 5As shown, the thin plate contact separation type TENG 2 includes a fixing mechanism 24, a connecting rod 23, and a plurality of circular friction discs 21 and electrode discs 22. A friction layer is provided on the surface of the friction disc 21, and an electrode layer is provided on the surface of the electrode disc 22. The friction layer and the electrode layer are made of two materials with different electronegativity. In the scheme of this embodiment, the fixing mechanism 24 fixes each friction disc 21 on the silo 11 in the floating body 1, and the connecting rod 23 fixes the electrode disc 22 on the buoy 12 in the floating body 1. And each friction disc 21 and electrode disc 22 in this embodiment are arranged alternately and parallelly along the axial direction of the columnar chamber. The structure composed of all friction discs 21 and electrode discs 22 is recorded as a disc array. Then, along the axial direction of the connecting rod 23, each friction disc 21 and each electrode disc 22 are respectively located at the odd and even positions of the disc array.

[0058] It should be noted that: in the scheme of this embodiment, the friction disc 21 and the electrode disc 22 are respectively connected to different components that can move relatively in different floating bodies 1, the purpose of which is to enable the friction disc 21 and the electrode disc 22 to achieve frequent contact and separation with the lifting and lowering movement of the buoy 12 and the silo 11. For this reason, the connection relationship between the friction disc 21 and the electrode disc 22 and the silo 11 and the buoy 12 in this embodiment is not unique. In other embodiments, it is also possible to choose to fix each electrode disc 22 on the silo 11 in the floating body 1 through a fixing mechanism 24, and to fix the friction disc 21 on the buoy 12 in the floating body 1 using a connecting rod 23.

[0059] The following describes the Archimedean ocean energy collection device in this embodiment with the structure that the friction disc 21 is connected to the buoy 12 through the connecting rod 23, and the electrode disc 22 is connected to the silo 11 through the fixing mechanism 24:

[0060] Combination Figure 5 and Figure 6 It can be seen that in the thin plate contact separation type TENG 2, the friction disk 21 and the electrode disk 22 are coaxial and alternately distributed in the cylindrical cavity of the float 1. In a more optimized scheme, the friction disk 21 is arranged at equal intervals on the connecting rod 23; the electrode disk 22 is arranged at equal intervals on the fixing mechanism 24; and the spacing between any two adjacent friction disks 21 is equal to the spacing between any two adjacent electrode disks 22. This enables each friction disk 21 to synchronously contact the lower surface or upper surface of the adjacent electrode disk 22 when the buoy 12 drives the friction disk 21 to rise or fall, avoiding the phase difference in the power output of each electrode disk 22. The center of the friction disk 21 and the electrode disk 22 in the disk array is provided with a through hole, and the size of the through hole on each electrode disk 22 is larger than the through hole on the friction disk 21. The top of the connecting rod 23 is fixedly connected to the top of the inside of the buoy 12, and the bottom end passes through the through holes in all friction disks 21 and electrode disks 22 in sequence.

[0061] In addition, the outer diameter of the connecting rod 23 in this embodiment matches the size of the through hole in the friction disc 21, and the two are assembled by interference fit, welding, etc., or fixedly connected by other fasteners. The outer diameter of the connecting rod 23 is smaller than the size of the through hole in the electrode disc 22, so the electrode disc 22 can move up and down along the connecting rod 23. When the friction disc 21 and the connecting rod 23 are connected by fasteners, one feasible solution is that the designer sets an external thread at the installation position corresponding to each friction disc 21 in the connecting rod 23, and then fixes each friction disc 21 on the connecting rod 23 in turn by nuts, etc. And during the installation of the friction disc 21, the electrode disc 22 is alternately sleeved between adjacent friction discs 21.

[0062] In the solution of this embodiment, a variety of solutions are provided for fixing the electrode disk 22 in the silo 11 through the fixing mechanism 24, specifically including:

[0063] Scenario 1:

[0064] like Figure 7 As shown, the size of each electrode disk 22 is appropriately enlarged, and the diameter of the electrode disk 22 is made larger than the diameter of the friction disk 21. Then a sleeve with an inner diameter greater than or equal to the outer diameter of the electrode disk 22 and smaller than the inner diameter of the silo 11 is used as a fixing mechanism 24, and each electrode disk 22 and the friction disk 21 are placed in the sleeve, and each electrode disk 22 and the sleeve are fixed along the outer periphery of the electrode disk 22, so that each electrode disk 22 includes a fixed spacing. In this scheme, the electrode disk 22 and the sleeve can be fixedly connected by interference fit or welding, or corresponding fasteners can be set on the electrode disk 22 and the inside of the sleeve to fix the two. For example, the technician can drill a hole on the edge of the electrode disk 22, and then set a connecting ear extending outward at a corresponding position on the inner wall of the collar, and fasten the electrode disk 22 to the collar by screws or other similar fasteners. Finally, the sleeve is fixed in the center of the silo 11.

[0065] Scenario 2:

[0066] like Figure 8 As shown, the electrode disc 22 is a disc larger than the friction disc 21, and each electrode disc 22 and the friction disc 21 are alternately and coaxially arranged in sequence. Then, two vertical rods connected to the bottom of the silo 11 and extending upward are used as fixing mechanisms 24, and the portion of the electrode disc 22 that exceeds the friction disc 21 is passed through each electrode disc 22, and the vertical rods are fixedly connected to the electrode disc 22.

[0067] Solution 3:

[0068] like Fig. 9As shown, the electrode disk 22 is a circular disk of the same size as the friction disk 21 , and at least one bracket is arranged in the edge of each electrode disk 22 . Each bracket constitutes a fixing mechanism 24 and fixes each electrode disk 22 to the inner wall of the silo 11 .

[0069] In the scheme of this embodiment, the friction disc 21 includes a substrate and a friction layer attached to the front and back sides of the substrate, and the electrode disc 22 includes a substrate and an electrode layer attached to the front and back sides of the substrate. The substrates of the friction disc 21 and the electrode disc 22 can be made of lightweight and high-strength insulating materials, such as PET (polyethylene terephthalate), PE (polyethylene), PVC (polyvinyl chloride), PC (polycarbonate) and other resin materials. The friction layer is made of a dielectric material with strong electronegativity. Commonly used dielectric materials are fluorine-containing resin materials, including: FEP (fluorinated isopropylene), PVDF (polyvinylidene fluoride), PETT (polytetrafluoroethylene), etc.

[0070] Electrode layers are provided on both the front and back sides of the electrode disk 22, and the electrode layers are made of conductive materials. In this embodiment, the conductive materials used for the electrode layer include: gold, silver, copper, iron, aluminum and any other single metal or alloy material. In the thin plate contact separation type TENG 2, the electrode layers on the upper surfaces of each electrode layer are electrically connected to each other to form a first electrode, and the electrode layers on the lower surfaces of each electrode layer are electrically connected to each other to form a second electrode. The first electrode and the second electrode serve as the power output port of the thin plate contact separation type TENG 2.

[0071] The silo 11 of the Archimedean ocean energy collection device provided in this embodiment is fixedly connected to a base below the water body. In the entire device, the buoyancy of the combination of the buoy 12, the connecting rod 23 and the friction disc 21 or the electrode disc 22 connected thereto in the water body is greater than the gravity. Specifically, the working principle of the Archimedean ocean energy collection device in this embodiment is as follows:

[0072] The silo 11 in the floating body 1 can be fixed to the seabed or other underwater facilities by cables, etc. The cables will limit the vertical movement of the silo 11. The buoy 12 is fixedly connected to the silo 11 by an annular waterproof belt 13. The special connection structure of the two allows the buoy 12 to move up and down relative to the silo 11 in an appropriate range. Since the overall buoyancy of the buoy 12 is greater than the gravity, the buoy 12 will tend to float up and away from the silo 11 in a natural state, but when the buoy 12 is impacted downward by the water in the waves, the buoy 12 will move downward and close to the silo 11. It can be seen that below the water surface, as long as the water is in a non-stationary state, the buoy 12 will rise and fall relative to the silo 11.

[0073] On this basis, considering that the friction disk 21 in the thin plate contact separation type TENG 2 in this embodiment is fixed on the float 12, and the electrode disk 22 is fixed on the silo 11, the relative movement between the float 12 and the silo 11 will cause the friction disk 21 and the electrode disk 22 in the contact separation type TENG to frequently contact and separate. In the thin plate contact separation type TENG 2 of this embodiment, the charge amount of the first electrode and the second electrode in the initial state is evenly distributed. Assuming that each friction plate moves downward to contact the first electrode of each electrode disk 22 and detaches, a charge transfer will occur between the first electrode and the friction layer on the upper surface of the friction disk 21, which will cause a charge difference between the first electrode and the second electrode and generate electrical energy output. Assuming that each friction plate moves upward to contact the second electrode of each electrode disk 22 and detaches, a charge transfer will also occur between the second electrode and the friction layer on the lower surface of the friction disk 21, which will cause a charge difference between the first electrode and the second electrode and generate electrical energy output. It can be seen that as long as the buoy 12 rises and falls relative to the silo 11 under hydraulic drive, the thin-plate contact separation type TENG 2 can generate stable power output. In particular, in a more optimized solution of this embodiment, the copper film electrode is also pre-charged with surface charge in the form of high-voltage discharge to improve the output of the thin-plate contact separation type TENG 2 in the initial stage.

[0074] Further analysis of the working principle of the Archimedean ocean energy collection device in this embodiment shows that the frequency and amplitude of the alternating current generated by the device are related to the frequency and amplitude of the impact received by the float 1 underwater. Therefore, the device can actually also detect hydrological data and be used to monitor the fluctuation frequency and amplitude of the water body.

[0075] As can be seen from the above, the columnar cavity between the silo 11 and the buoy 12 in this embodiment is pre-pressurized to position the entire floating body 1. On this basis, a more optimized solution of this embodiment is to further provide a one-way air valve 120 in the silo 11 or the buoy 12 that communicates with the internal columnar cavity. Fig.10 As shown, the one-way air valve 120 is set at the top of the float 12. The technician can charge the columnar chamber through the one-way air valve 120 to pre-adjust the initial position of each friction disk 21 and the adjacent electrode disk 22 in the thin plate contact separation TENG 2, and make each friction disk 21 and each electrode disk 22 close to each other but not in contact in the initial state. In this way, the energy conversion efficiency of the thin plate contact separation TENG 2 can be appropriately improved, so that as long as the water body finds a slight fluctuation, the thin plate contact separation TENG 2 can generate electrical energy output.

[0076] The friction layer and the electrode layer in this embodiment generate electrical energy output through frequent basic separation. During long-term use, the electrode layer and the friction layer will wear out. In order to reduce the wear of the two and increase the service life of the device, this embodiment provides an additional nylon layer on the copper film electrode of the electrode layer. The nylon material of the nylon layer is in direct contact with the FEP material in the friction layer. Both nylon and FEP are flexible materials with strong toughness, which allow a certain degree of deformation, thereby extending the service life of the friction layer and the electrode layer.

[0077] Example 2

[0078] On the basis of the scheme in Example 1, this embodiment further provides a hydrological monitoring station for monitoring hydrological data in a water body. The hydrological monitoring station includes: an energy storage device, a variety of hydrological monitoring sensors, a communication module, a data processing module, and an Archimedean ocean energy collection device as in Example 1. On the one hand, the Archimedean ocean energy collection device serves as an energy harvesting device for directly powering hydrological monitoring sensors, communication modules, and data processing modules, or for charging the energy storage device to achieve indirect power supply. On the other hand, as a state detection mechanism for water body wave energy, it is used to record a corresponding state signal when the output of the thin plate contact separation type TENG 2 exceeds a preset amplitude or frequency threshold; the state signal detected by the data processing model is stored in the storage module in the form of a work log, and is regularly sent to other devices for relevant personnel to analyze the hydrological conditions in the installation area of ​​the hydrological monitoring station.

[0079] In the hydrological monitoring station of this embodiment, the floating body 1 in the Archimedean ocean energy collection device is a good waterproof container, so the energy storage device, communication module, data processing module and storage module can be installed in the floating body 1.

[0080] In traditional hydrological monitoring stations, batteries need to be installed to power the equipment. The battery life is limited, so maintenance personnel are required to replace the batteries regularly, which results in high equipment maintenance costs. In order to reduce maintenance costs, technicians have also installed solar power generation floats 1 and other devices near related equipment, but the stability of solar power generation equipment when used on the sea surface is insufficient. The Archimedean ocean energy collection device in this embodiment is very suitable for use in this scenario. The ocean energy collection device can not only use the wind and waves or fluid energy such as tides and ocean currents in the ocean to generate a stable power supply, but can also be used as a sensor to monitor data on water fluctuations. Powerful performance and strong practicality

[0081] The above-described embodiment only expresses one implementation mode of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the attached claims.

Claims

1. An Archimedean ocean energy collection device, characterized in that: The method comprises a floating body and a group of thin-plate contact-separation TENGs contained therein; The floating body comprises a silo, a buoy, and an elastic annular waterproof belt connecting the two; the silo is a cylindrical structure with an opening upward, and comprises a first cavity therein; the buoy is a cylindrical structure with an opening upward, and comprises a second cavity therein; the size of the second cavity is larger than that of the silo, and the silo is inserted upward into the second cavity of the buoy; the upper edge of the annular waterproof belt is sealed to the buoy, and the lower edge is sealed to the silo, thereby forming a closed columnar chamber in the floating body; the columnar chamber is pre-pressurized to maintain the initial shape of the floating body; The thin plate contact separation type TENG is installed in the columnar chamber, and includes a fixing mechanism, a connecting rod, and multiple friction discs and electrode discs; a friction layer is arranged on the surface of the friction disc, and an electrode layer is arranged on the surface of the electrode disc, and the friction layer and the electrode layer are made of two materials with different electronegativity; the friction disc and the electrode disc are respectively arranged alternately and parallelly along the axial direction of the columnar chamber; a through hole is arranged in the center of each of the friction disc and the electrode disc, and the through hole on one disc body is larger than the other; the top end of the connecting rod is fixedly connected to the top of the inside of the float, and the other end is inserted into the through hole of the friction disc and the electrode disc, and is fixedly connected to the disc body with a smaller through hole; the disc bodies with larger through holes in the friction disc and the electrode disc are respectively connected to the silo through the fixing mechanism; the outer diameter of the connecting rod is smaller than the through hole diameter in the disc body with larger through hole; thereby allowing the corresponding disc body to move up and down along the axial direction of the connecting rod; The silo is fixedly connected to a base below the water body, and the buoyancy of the combination of the float, the connecting rod and the friction disk or electrode disk connected thereto in the water body is greater than the gravity; when the float moves with the waves in the water body, the friction disk and the electrode disk in the thin plate contact-separation TENG are driven to contact and separate, so that charge transfer occurs between the electrode layer and the friction layer, and electric energy output is generated on the electrode disk.

2. The Archimedean ocean energy collection device according to claim 1, characterized in that: The annular waterproof belt is made of silica gel, rubber, resin or other wear-resistant flexible film materials.

3. The Archimedean ocean energy collection device according to claim 1, characterized in that: The silo and the buoy are both barrel-shaped, and the first cavity and the second cavity therein are cylindrical; and / or The bottom of the silo is provided with an annular base having a size larger than the inner diameter of the second cavity in the buoy; and / or A straw hat-shaped floating platform is provided on the top of the floating cylinder; the outer diameter of the floating platform is larger than the outer diameter of the floating cylinder.

4. The Archimedean ocean energy collection device according to claim 3, characterized in that: The buoy is made of lightweight materials; and / or An air cavity for providing lift underwater is provided in the side wall and / or the floating platform on the top of the buoy.

5. The Archimedean ocean energy collection device according to claim 1, characterized in that: Each friction disk in the thin-plate contact-separation TENG is fixedly connected to the buoy through the connecting rod, and each electrode disk is fixedly connected to the silo through the fixing mechanism; or Each electrode disk in the thin-plate contact-separation TENG is fixedly connected to the buoy through the connecting rod, and each friction disk is fixedly connected to the silo through the fixing mechanism.

6. The Archimedean ocean energy collection device according to claim 5, characterized in that: The friction discs or electrode discs are arranged at equal intervals on the connecting rod; the electrode discs or friction discs are arranged at equal intervals on the fixing mechanism; and the distance between any two adjacent friction discs is equal to the distance between any two adjacent electrode discs.

7. The Archimedean ocean energy collection device according to claim 1, characterized in that: The silo or float is also provided with a one-way air valve connected to the internal columnar chamber; the one-way air valve is used to pressurize the columnar chamber to pre-adjust the initial positions of each friction disk and adjacent electrode disk in the thin plate contact separation TENG, and make each friction disk and each electrode disk close but not in contact in the initial state.

8. The Archimedean ocean energy collection device according to claim 1, characterized in that: The front and back sides of the friction disc are both provided with friction layers, and the friction layers are made of dielectric materials; the dielectric materials include: FEP, PVDF, PETT; and / or The electrode disk has electrode layers on both the front and back sides, and the electrode layers are made of conductive materials; the conductive materials include: gold, silver, copper, iron, aluminum and any other single metal or alloy material; and / or In the thin-plate contact-separation type TENG, the electrode layers on the upper surfaces of each electrode layer are electrically connected to each other to form a first electrode, and the electrode layers on the lower surfaces of each electrode layer are electrically connected to each other to form a second electrode; the first electrode and the second electrode serve as power output ports of the thin-plate contact-separation type TENG.

9. The Archimedean ocean energy collection device according to claim 8, characterized in that: The electrode layer comprises a copper film electrode and a nylon layer thereon; and / or The copper film electrode is also pre-charged with surface charges in the form of high voltage discharge.

10. A hydrological monitoring station, used for monitoring hydrological data in a water body, characterized in that: It includes: An energy storage device, a variety of hydrological monitoring sensors, a communication module, a data processing module, a storage module, and an Archimedean ocean energy collection device as described in any one of claims 1 to 9; the Archimedean ocean energy collection device, on the one hand, serves as an energy harvesting device for directly powering the hydrological monitoring sensors, communication modules, and data processing modules, or for charging the energy storage device for indirect power supply; on the other hand, serves as a state detection mechanism for water wave energy, for recording a corresponding state signal when the output of the thin plate contact-separation TENG exceeds a preset amplitude or frequency threshold; the state signal is used for hydrological analysis.

Images