Dual-mode self-powered sensing device based on wave energy

Abstract

The utility model relates to the technical field of renewable energy power generation, in particular to a dual-mode self-powered sensing device based on wave energy. The turbine is located in the center and provided with a rotating shaft and blades. The water collecting bin is smoothly connected with the closing-in section so that fluid in the water collecting bin can impact blades of the turbine through the closing-in section. A coil is arranged on the turntable; the electromagnets are arranged on the two sides of the coil so that magnetic induction lines generated by the magnets can be cut when the coil rotates to generate induction current, an electrode layer is arranged on the outer wall of each closing-in section, and the two symmetrically-arranged electrode layers on the outer walls of the closing-in sections are connected to the positive electrode and the negative electrode of the storage battery respectively. According to the device, the friction nanometer sensing module is used for converting ocean wave energy into electric signals, the wave vibration amplitude, frequency and direction are reflected, and the accuracy is high. In addition, the device can convert wave kinetic energy and potential energy into mechanical energy of the device for power generation by applying the electromagnetic induction principle, self-energy supply of the device is achieved, frequent replacement and recovery of batteries are not needed, and the labor cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to renewable energy power generation technical field, concretely points to a kind of double mode self-powered sensing device based on wave energy. BACKGROUND

[0002] To help "double carbon" realization, the state implements incentive policies such as tax reduction and fee reduction, innovation encouragement, financial support in the field of marine energy development, aiming to promote the rapid development of marine energy development and utilization, and vigorously develop the "blue path" to achieve the "double carbon" target.However, at present, wave energy ocean monitoring sensing device is generally bulky, and the equipment construction cost is high.Meanwhile, there are long information transmission emission cycle, limited information emission range and other disadvantages.In addition, most sensing devices rely on battery power, and the battery service life is short, and the battery needs to be replaced regularly after the battery power is consumed, which consumes high labor cost.

[0003] To solve the above problems, the present application is proposed. SUMMARY

[0004] The present application proposes a double mode self-powered sensing device based on wave energy, which collects wave energy of marine environment, integrates friction nanosensing technology, acts as a sea signal buoy, and uses electromagnetic induction power generation to realize self-powered device, with the advantages of simple structure, low construction cost, easy maintenance and the like.

[0005] The double mode self-powered sensing device based on wave energy of the present application includes friction nanogeneration and electromagnetic generation two modes.When the device swings with waves, the deionized water and PTFE material in the friction nanosensing module rub against each other, and the electrons are constantly transferred between the copper electrodes, generating alternating current pulses with different waveforms, amplitudes and widths in the circuit, which can intuitively reflect the amplitude, frequency and direction of ocean wave vibration, acting as a sea signal buoy.

[0006] At the same time, in the electromagnetic generation module, the deionized water converts the kinetic energy and potential energy of wave energy into mechanical energy of the turbine inside the device, drives the circular turntable coaxial with the turbine to rotate, makes the copper coil on it rotate to cut the magnetic induction line, generates electromotive force, realizes self-powered device, meets the energy demand of sea signal sensing and transmitting high-frequency signals to satellite.

[0007] The technical scheme of the present application is as follows: a double mode self-powered sensing device based on wave energy, the double mode self-powered sensing device comprises: a turbine, a water collecting bin, a closing section, an outer shell, a plurality of electromagnets, a plurality of coils, a turntable and a storage battery.

[0008] The turbine is located at the center, and the turbine has a rotating shaft and a plurality of blades.

[0009] The water collecting chamber is arranged at the outer periphery of the turbine; the water collecting chamber is connected with the converging section smoothly so that the fluid in the water collecting chamber can impact the blades of the turbine through the converging section;

[0010] The rotating disc is provided with a plurality of coils, and the rotating disc is drivingly connected with the turbine so that the rotating disc and the coils can rotate under the driving of the turbine;

[0011] The plurality of electromagnets are arranged at two sides of the coils so that the coils can cut the magnetic induction lines generated by the electromagnets to generate induced current when the coils rotate, and the coils are electrically connected with the battery so as to store the electric energy generated by electromagnetic induction into the battery;

[0012] Each converging section outer wall is provided with an electrode layer, and the electrode layers of the two symmetrically arranged converging section outer walls are connected to the positive and negative poles of the battery respectively.

[0013] Preferably, the number of the tapered water collecting chambers, the blades of the turbine and the converging sections are equal.

[0014] Preferably, the side wall of the converging section is a polytetrafluoroethylene layer, and the electrode layer is a copper film.

[0015] Preferably, from the outer periphery to the center, the volume of the water collecting chamber gradually decreases, and the volume of the converging section gradually decreases.

[0016] Preferably, the rotating disc is drivingly connected with the turbine through a connecting shaft.

[0017] Preferably, a baffle is arranged on each of the upper and lower sides of the turbine, so as to form a closed structure isolated from the fluid between the baffle and the shell, and the plurality of electromagnets, the plurality of coils and the rotating disc are arranged in the closed structure.

[0018] Preferably, the electrode layer is in a ring structure and covers the two side walls of the converging section.

[0019] Preferably, the coils are electrically connected with the battery through a rectifier, so that the current is first rectified by the rectifier.

[0020] The electrode layers of the two symmetrically arranged converging section outer walls are connected to the positive and negative poles of the battery through a rectifier, so that the current is first rectified by the rectifier.

[0021] The specific structure of the device is as follows: the center of the device is a spherical shell, and four water collecting bins are uniformly distributed around the spherical shell. The water collecting bins are filled with a proper amount of deionized water. The collecting sections connected with the water collecting bins are made of polytetrafluoroethylene (PTFE material), and the outer wall of the collecting sections is pasted with copper film. The PTFE material of the collecting sections, the copper film and the deionized water form a friction nano sensing module. A battery is arranged between two adjacent collecting sections and connected with the copper films on both sides through wires.

[0022] Inside the spherical shell, a turbine is installed on a connecting shaft at the center of the device and is provided with four blades. A circular baffle is installed on each of the upper and lower sides of the turbine with the connecting shaft as the center, so as to form a closed structure with the water collecting bins and the center of the device, thereby playing a role of isolating the deionized water. A plurality of magnets are installed on the outer sides of the upper and lower circular baffles, and a placing plate is arranged on each of the upper and lower sides of the spherical shell, and the same number of magnets as those on the circular baffles are installed on the placing plates.

[0023] A circular turntable is installed at each end of the connecting shaft and located between the circular baffles and the placing plates, and a plurality of copper coils are uniformly distributed on the circular turntable. The copper coils on the circular turntable, the magnets on the upper and lower circular baffles and the magnets on the placing plates form an electromagnetic power generation module.

[0024] When the device is in operation, the device is fixed on the channel by an anchor chain. When the device is excited by wave energy, the deionized water in the water collecting bins shakes with the waves and is separated from the PTFE material of the collecting sections to generate friction. Since the PTFE material of the collecting sections and the deionized water are different in the order of friction electricity sequence, when they are in contact and friction, a positive friction charge is induced on the surface of the deionized water, and an equal amount of negative friction charge is obtained on the surface of the PTFE material. In the two symmetrical collecting sections, when the device floats with the sea waves and appears a potential energy difference, the water storage capacity of the two symmetrical water collecting bins is different, the contact area of the collecting section at the downward inclined end with the deionized water is larger, and the potential difference is formed between the electrode Cu film pasted on the outer wall of the PTFE material, the Cu film at the downward inclined end has a lower potential, the current direction is from the Cu film with higher potential to the Cu film with lower potential, and the battery starts to be charged. When there is no wind wave on the sea level, the device fluctuates weakly, or the deionized water originally concentrated in a water collecting bin flows back, the deionized water completely covers the two symmetrical collecting sections again, and there is no electrostatic induction process between the Cu film pasted on the surface of the PTFE material of the collecting section, so that no current is generated. The device repeatedly performs the above process on the sea surface, different electric signals are generated in the face of complex sea conditions, the electric signals are analyzed through the friction nano sensing principle, and the amplitude, frequency and direction of the ocean wave vibration are directly reflected.

[0025] Meanwhile, the deionized water impacts the turbine blades in the water collecting bin during the movement, drives the turbine to rotate at high speed, the turbine drives the circular turntable coupled with the connecting shaft to rotate, the four pairs of copper coils on the circular turntable rotate, cut the magnetic induction lines formed between the magnets on the placing plate and the circular partition plate, generate induced electromotive force in the copper coils, and store the induced electromotive force into the storage battery, so that the device is self-powered.

[0026] The device has the following beneficial effects:

[0027] 1. The device converts the ocean wave energy into electrical signals by using the friction nano sensing module, reflects the wave vibration amplitude, frequency and direction, and has high accuracy. In addition, the device can also convert the wave kinetic energy and potential energy into mechanical energy of the device by using the electromagnetic induction principle, realize self-power supply of the device, and does not need to frequently replace and recycle the battery, thereby reducing the labor cost.

[0028] 2. The device is simple to manufacture, compact and light in structure, and low in construction cost. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a transverse sectional view of a dual-mode self-powered sensing device based on wave energy provided by the embodiment of the present application.

[0030] Figure 2 is a longitudinal sectional view of a dual-mode self-powered sensing device based on wave energy provided by the embodiment of the present application.

[0031] Figure 3 is a charge transfer process diagram of a dual-mode self-powered sensing device based on wave energy provided by the embodiment of the present application.

[0032] Figure 4 is a circuit diagram of a dual-mode self-powered sensing device based on wave energy provided by the embodiment of the present application.

[0033] LIST OF REFERENCE NUMERALS

[0034] 2.1, first water collecting bin; 2.2, second water collecting bin; 3, closing section; 4, spherical shell; 5, connecting shaft; 6, copper film; 7, turbine; 8.1, first magnet; 8.2, second magnet; 8.3, third magnet; 8.4, fourth magnet; 9, circular partition plate; 10, circular turntable; 11, bearing; 12, placing plate; 13.1, first copper coil, 13.2, second copper coil; 14, deionized water; 15, rectifier. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present application more clear and explicit, the present application is further described in detail below with reference to the drawings and examples.

[0036] Those skilled in the art will appreciate that the following examples are intended to be illustrative only and are not intended to limit the scope of the present application. Unless specific technical or conditions are mentioned, those of ordinary skill in the art will understand that the techniques or conditions described in the literature or those that are otherwise commonly used are intended. When the manufacturer of the reagent or instrument is not mentioned, it is a conventional product that can be obtained by purchase.

[0037] Those skilled in the art will appreciate that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. In this disclosure, "a" or "an" can mean "one or more" unless indicated otherwise. It will be further understood that the terms "includes," "including," "comprises" and / or "comprising," when used in this disclosure, specify the presence of stated features, integers, steps, operations, elements, and / or components but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element, or intervening elements can be present. In addition, "connected" as used herein can include wirelessly connected.

[0038] In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and like terms, which indicate an orientation or positional relationship based on the orientation or position shown in the drawings, are used only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] In addition, the terms "first," "second," "third," etc., are used herein only to describe various tenninates and do not imply or connote relative importance or a specific number of tenninates so indicated. Thus, a feature limited to "first," "second," or "third" can explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of "a plurality of" is two or more, unless specifically defined otherwise.

[0040] In the present application, unless specifically stated and limited otherwise, the terms "mounting," "connection," "connecting," "fixed," and the like, are used broadly and encompass both direct and indirect mounting, connection, connecting, and the like, as well as mechanical and electrical connections, and the like. In addition, the terms "mounting," "connection," "connecting," "fixed," and the like, can include wired and wireless connections, and the like. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

[0041] In the present application, unless specifically defined and limited otherwise, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.

[0042] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification.

[0043] Those skilled in the art can understand that, unless otherwise defined, all terms used herein, including technical terms and scientific terms, have the same meaning as the general understanding of those skilled in the art to which the present application belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have meanings consistent with those in the context of the prior art, and should not be interpreted with idealized or overly formal meanings unless defined as such.

[0044] As Figures 1-2 As shown in the figure, the wave energy-based dual-mode self-powered sensing device of the present application adopts a closed symmetrical structure similar to a cross. The center of the device is a spherical shell 4. The center of the spherical shell 4 is a connecting shaft 5. A turbine 7 is installed on the connecting shaft 5. The turbine 7 has four blades. Four water collection tanks are symmetrically distributed around the device. The water collection tank contains a proper amount of deionized water 14. The side of the water collection tank close to the center is connected with a converging section 3. The converging section 3 is made of PTFE material. The outer wall of the converging section 3 is pasted with a copper film 6. The PTFE material of the converging section 3, the copper film 6 and the deionized water 14 form a solid-liquid interface friction nano sensing module. A storage battery 1 is arranged between the symmetrically arranged first water collection tank 2.1 and the second water collection tank 2.2 and the converging section 3, and is connected with the copper film 6 at both ends through wires.

[0045] It should be noted that the PTFE material of the closing section 3 and the deionized water 14 are different in the order of triboelectric series, when the deionized water 14 is in contact with the PTFE material, the deionized water 14 surface induces a positive triboelectric charge, and the PTFE material surface obtains an equal negative triboelectric charge.

[0046] It should be noted that the water collecting chamber is designed in a tapered structure, which can increase the kinetic energy of the deionized water 14. The water collecting chamber is connected with the closing section 3 in sequence, and the transition is smooth without additional resistance increase, which can enhance the impact force on the turbine 7. The water flow outlet of the closing section 3 is tangent to the blade of the turbine 7, which improves the utilization efficiency of wave energy.

[0047] As shown in Figure 2 The center of the connecting shaft 5, on both sides of the turbine 7, a circular partition 9 is installed, which forms a closed structure with the water collecting chamber 2 and the center part of the device, so as to isolate the deionized water 14 and avoid its interference with the electromagnetic power generation module. A plurality of magnets are installed on the outer side of each of the upper and lower circular partitions 9, and the number can be four.

[0048] A storage plate 12 is arranged on each of the upper and lower sides in the spherical shell 4, and a plurality of magnets with the same number as the circular partition 9 are installed thereon. The first magnet 8.1, the second magnet 8.2, the third magnet 8.3 and the fourth magnet 8.4 are symmetrically distributed about the circular turntable 10. The upper surface of the first magnet 8.1 and the lower surface of the second magnet 8.2 are magnetically different. The other magnets are consistent with the first magnet 8.1 and the second magnet 8.2 in the vertical direction.

[0049] A circular turntable 10 is installed at each end of the connecting shaft 5, which is located between the circular partition 9 and the storage plate 12. A plurality of copper coils, such as the first copper coil 13.1 and the second copper coil 13.2, are uniformly distributed on the circular turntable 10. The copper coils on the circular turntable 10 and the magnets 8 on the upper and lower circular partitions 9 and the magnets on the storage plate 12 form an electromagnetic power generation module.

[0050] It should be noted that the first copper coil 13.1 and the second copper coil 13.2 mentioned in the above embodiment are designed as four pairs, which can be expanded to a plurality of numbers.

[0051] The symmetric magnet mentioned in the above embodiment is designed as eight pairs, which can be expanded to a plurality of numbers.

[0052] The working principle of the device is as follows:

[0053] Figure 3 It is a charge transfer process diagram of solid-liquid interface friction nano sensor module. The device floats on the sea surface, and when it is excited by wave energy, the deionized water 14 shakes back and forth in the water collecting chamber, and the PTFE material of the closing section 3 is in contact with the deionized water 14.

[0054] As Figure 3 (a) shows that the device is in the central balanced position, and the deionized water 14 is approximately evenly distributed in the symmetrical water collecting tanks 2.1, 2.2, and the liquid surface covers the symmetrical converging sections 3. There is no electrostatic induction process between the Cu film 6 adhered to the PTFE material of the converging section 3, and no current is generated in the device.

[0055] As Figure 3 (b) shows that the device tilts to one end (such as the second water collecting tank 2.2) with the wave, and the deionized water 14 flows to the second water collecting tank 2.2 due to the potential energy difference. The water distribution in the first water collecting tank 2.1 and the second water collecting tank 2.2 is not uniform, which leads to different contact areas between the deionized water 14 and the two symmetrical converging sections 3. The converging section 3 at the downward tilting end has a larger contact area with the deionized water 14, and the deionized water 14 induces a positive charge, and the PTFE material surface of the converging section 3 induces a negative charge. The electrostatic induction effect occurs between the two symmetrical Cu films 6. The Cu film 6 at the downward tilting end has a lower potential, and the current direction is from the Cu film 6 with a higher potential to the Cu film 6 with a lower potential, which starts to charge the battery.

[0056] With the fluctuation of the wave, when the device tilts to the other end, the deionized water 14 flows in the opposite direction of the above-mentioned flow trend. As Figure 3 (c) shows that during the flow of the deionized water 14 to the first water collecting tank 2.1, the deionized water 14 completely covers the two symmetrical converging sections 3 again, and there is no electrostatic induction process and no current between the Cu films 6 at this time. As Figure 3 (d) shows that when most of the deionized water 14 enters the symmetrical first water collecting tank 2.1, a greater potential difference is formed between the Cu films 6 through the electrostatic induction effect, and the charging of the battery 1 continues.

[0057] With the movement of the device with the wave, the deionized water 14 in the device circulates through the above process, which makes the device continuously generate an alternating current output signal. The potential difference and the conduction current have a stable linear relationship with the amplitude, frequency, and direction of the wave vibration. Through the electric signal information, the ocean environment monitoring can be realized, which is helpful for the utilization and comprehensive management of marine resources.

[0058] In the electromagnetic power generation module, the device swings with the wave, and the potential energy and kinetic energy of the wave are converted into the kinetic energy of the deionized water 14 in the water collecting tank. The deionized water 14 impacts the single blade of the turbine 7, driving the turbine 7 to rotate at high speed. The rotation of the turbine 7 drives the circular turntable 10 coupled with the connecting shaft 5 to rotate, and the copper coil on the circular turntable 10 rotates, cutting the magnetic induction lines formed between the magnets at the circular partition 9 and the placement plate 12, generating an induced electromotive force in the copper coil, and storing it in the battery 1.

[0059] As Figure 4 The current generated in the solid-liquid interface friction nano-sensing module and the electromagnetic power generation module can be first adjusted by the rectifier 15 and then transmitted to the storage battery 1.

[0060] The storage battery 1 provides power for the signal transmission elements of the device, realizing self-power supply of the device.

[0061] Further, in order to ensure that the device does not run out of marks under the influence of air flow, sea waves and ocean currents, the bottom of the device can be connected to the anchor sunk in the seabed through the anchor chain.

Claims

1. A dual mode self-powered sensing device based on wave energy, characterized in that, The dual-mode self-powered sensing device comprises a turbine, a water collecting bin, a closing section, a shell, a plurality of electromagnets, a plurality of coils, a rotating disc, and a battery. The turbine is located at the center and has a rotating shaft and a plurality of blades. The water collecting bin is arranged at the outer periphery of the turbine and is connected to the closing section in a smooth manner so that the fluid in the water collecting bin can impact the blades of the turbine through the closing section. The rotating disc is provided with a plurality of coils and is drivingly connected to the turbine so that the rotating disc and the coils can rotate under the driving of the turbine. The plurality of electromagnets are arranged on both sides of the coils so that the coils can cut the magnetic induction lines generated by the electromagnets when the coils rotate to generate induced current. The coils are electrically connected to the battery so that the electric energy generated by electromagnetic induction can be stored in the battery.

2. The wave energy based dual mode self-powered sensing device of claim 1, wherein, Each closing section is provided with an electrode layer on the outer wall, and the electrode layers on the outer walls of the two symmetrically arranged closing sections are respectively connected to the positive and negative electrodes of the battery.

3. The wave energy based dual mode self-powered sensing device of claim 1, wherein, The number of the water collecting bin, the blades of the turbine, and the closing section are equal.

4. The wave energy based dual mode self-powered sensing device of claim 1, wherein, The side wall of the closing section is a polytetrafluoroethylene layer, and the electrode layer is a copper film.

5. The wave energy based dual mode self-powered sensing device of claim 1, wherein, From the outer periphery to the center, the volume of the water collecting bin gradually decreases, and the volume of the closing section gradually decreases.

6. The wave energy based dual mode self-powered sensing device of claim 1, wherein, The rotating disc is drivingly connected to the turbine through a connecting shaft.

7. The wave energy based dual mode self-powered sensing device of claim 3, wherein, A baffle is arranged on each of the upper and lower sides of the turbine so as to form a closed structure between the baffle and the shell, which is isolated from the fluid, and the plurality of electromagnets, the plurality of coils, and the rotating disc are arranged in the closed structure.

8. The wave energy based dual mode self-powered sensing device of claim 1, wherein, The electrode layer is in a ring structure. The coils are electrically connected to the battery through a rectifier so that the current first passes through the rectifier for rectification. The electrode layers on the outer walls of the two symmetrically arranged closing sections are connected to the positive and negative electrodes of the battery through a rectifier so that the current first passes through the rectifier for rectification.

Images