Tree-shaped underwater fish gathering and power generation device and working method thereof

Abstract

The application discloses a tree-shaped underwater fish gathering power generation device and a working method thereof, which comprises a float, a power generation module and a load module; the load module comprises a shell, a chargeable power supply, a lifting unit, a storage box and a pressure pump; the power generation module comprises a power generation carrier, a delivery main pipe and a plurality of piezoelectric composite flexible films. The piezoelectric composite flexible films are fixed on the power generation carrier like cantilever beams, fish groups are attracted to approach the device by releasing the mixture of fish gathering elements and feed at different positions on the power generation carrier, the disturbance or collision force of water flow and fish groups on the piezoelectric composite flexible films makes the piezoelectric composite flexible films bend and deform, the piezoelectric composite flexible films generate electric current and store due to the piezoelectric effect, and the power supply can supply each release mechanism and other effective loads. The application can be used on the effective loads at the same time, and can supply power for far-sea underwater cableless detection and early warning, resource monitoring and other tasks, and can minimize the damage to marine organisms and ecology.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of underwater power supply equipment, in particular to a tree-shaped underwater fish gathering power generation device and a working method thereof. BACKGROUND

[0002] In the fields of marine scientific research, marine resource detection, and marine defense joint early warning, it is very important to have endurance and power supply when launching underwater robots, underwater sensors, underwater acoustic release devices and other payloads to perform tasks underwater. The endurance and power supply are directly related to the task cycle length and the frequency of recovery management. The existing underwater power supply system has a cable type power supply which needs a long wire cable to be connected with the mother ship, limiting the activity range of the payload in the open sea, and the energy loss increases with the length of the cable. The cable-free power supply mainly relies on the battery carried by the payload itself, and the battery charging needs to be completed on the water surface. The device needs to be recovered and released frequently during long-term task execution, which consumes additional time. How to obtain part of the energy and resources from the underwater or marine environment and convert them into electric energy to increase the endurance of the power supply battery of the payload; while utilizing the water environment, it is necessary to minimize the impact of the power generation device on the environment and ecology. These aspects are research directions with research value and application potential. The underwater power supply method needs more innovation and breakthrough. The present application uses pheromones or pheromones, feed and other more portable and economical consumables, and uses the factors such as the change of water flow caused by the movement of fish groups to propose a new concept for controllable power supply and power generation in the open sea underwater. SUMMARY

[0003] The present application solves the technical problems in the background art and provides a tree-shaped underwater fish gathering power generation device and a working method thereof.

[0004] The present application solves the above technical problems by adopting the following technical solutions:

[0005] A tree-shaped underwater fish gathering power generation device, comprising a float, a power generation module and a load module;

[0006] The float is used to provide buoyancy;

[0007] The load module comprises a shell, a chargeable power supply, a lifting unit, a storage tank and a pressure pump;

[0008] The chargeable power supply, the lifting unit, the storage tank and the pressure pump are all arranged in the shell;

[0009] The storage tank is in the shape of a needle tube, which is provided with a piston inside, and an electromagnetic valve at the outlet thereof, for storing a mixture of pheromones and feed;

[0010] The pressure pump is used to drive the piston in the storage tank, and pump the mixture of the polyfish and the feed out of the outlet of the storage tank when the electromagnetic valve is opened.

[0011] The lifting unit is used to adjust the weight of the load module, and then control the rising or sinking of the load module.

[0012] The power generation module comprises a power generation carrier, a conveying main pipe and a plurality of piezoelectric composite flexible membranes.

[0013] The power generation carrier is hollow, and the upper end of the power generation carrier is detachably connected with the float, and the lower end of the power generation carrier is fixedly connected with the shell.

[0014] The conveying main pipe is arranged in the power generation carrier, one end of the conveying main pipe is closed, and the other end of the conveying main pipe penetrates into the shell from the power generation carrier and is in close connection with the outlet of the storage tank.

[0015] A plurality of release holes are uniformly arranged on the side wall of the power generation carrier, and the release holes are communicated with the conveying main pipe through pipelines, and the mixture of the polyfish and the feed driven by the pressure pump and conveyed to the net cage through the central control hose is released through the release holes to attract the fish.

[0016] The plurality of piezoelectric composite flexible membranes are arranged on the outer wall of the power generation carrier, wherein the piezoelectric composite flexible membrane adopts a piezoelectric energy harvester and is in the form of a board strip, one end of the piezoelectric composite flexible membrane is fixedly connected with the outer wall of the power generation carrier, and the other end of the piezoelectric composite flexible membrane is a free end, and the fixed end of the piezoelectric composite flexible membrane is connected with the rechargeable power supply through a wire penetrating into the shell from the power generation carrier and penetrating out of the shell, and the piezoelectric composite flexible membrane is used to generate electric energy when being bent under stress to charge the rechargeable power supply.

[0017] As a further optimization scheme of the tree-shaped underwater polyfish power generation device, the tree-shaped underwater polyfish power generation device further comprises a signal receiver and a control module.

[0018] The signal receiver is used to receive external radio instructions and transmit the radio instructions to the control module.

[0019] The control module is electrically connected with the rechargeable power supply, the signal receiver, the lifting unit, the electromagnetic valve and the pressure pump respectively, and is used to control the working of the lifting unit, the electromagnetic valve, the pressure pump and the rechargeable power supply according to the received instructions.

[0020] As a further optimization scheme of the tree-shaped underwater polyfish power generation device, the power generation carrier is a hollow circular cylinder or a hollow regular polygonal prism with closed two ends.

[0021] As a further optimization scheme of the tree-shaped underwater polyfish power generation device, the plurality of piezoelectric composite flexible membranes form M groups of power generation units, each group of power generation units comprises N piezoelectric composite flexible membranes, and M and N are both natural numbers greater than or equal to 1.

[0022] The M groups of power generation units are uniformly arranged on the power generation carrier, and N piezoelectric composite flexible membranes in each group of power generation units are equidistantly arranged along the axis direction of the power generation carrier.

[0023] As a further optimization scheme of the tree-shaped underwater fish gathering power generation device, M is an even number greater than 1, the fixed connection positions of the piezoelectric composite flexible membranes and the power generation carrier in the 2i-1th group of power generation units are parallel to the axis of the power generation carrier, the fixed connection positions of the piezoelectric composite flexible membranes and the power generation carrier in the 2i group of power generation units are perpendicular to the axis of the main stem line, and i is an integer greater than or equal to 1 and less than or equal to M / 2.

[0024] As a further optimization scheme of the tree-shaped underwater fish gathering power generation device, the power generation carrier adopts the shape of a bionic tree trunk.

[0025] The application further discloses a working method of the tree-shaped underwater fish gathering power generation device, and the working method comprises the following processes.

[0026] In the initial state, the rechargeable power supply has preset power, the electromagnetic valve is closed, and the fish gathering agent and the feed are sealed in the storage box; during the sinking process of the tree-shaped underwater fish gathering power generation device, when the piezoelectric composite flexible membrane is bent and deformed upward due to the upward resistance of water, electric energy is generated due to the positive piezoelectric effect and is stored in the rechargeable power supply, and the pre-charging of the sinking process is completed.

[0027] In step 2, the tree-shaped underwater fish gathering power generation device reaches the designated task water depth position and stays, the signal receiver receives the signal, the control module controls the pressure pump to work, and the flow of the fish gathering agent and the feed is controlled through the electromagnetic valve to realize intermittent release and slow release.

[0028] The fish gathering agent and the feed make the fish group move back and forth between the piezoelectric composite flexible membranes, the water flow disturbance around the swimming fish group makes the cantilevered piezoelectric composite flexible membrane vibrate, in addition, the swing of the fish body touches the piezoelectric composite flexible membrane when passing through different net surfaces during the swimming process, and the underwater or bottom ocean current and turbulent flow disturbance also make the cantilevered piezoelectric composite flexible membrane vibrate to generate electric energy, which is stored.

[0029] Compared with the prior art, the application has the following technical effects:

[0030] 1. The application adopts the bionic tree structure, uses the fish gathering agent or pheromone, feed and other more portable and economical consumables, obtains part of the energy and resources from the underwater or marine environment and converts them into electric energy to increase the endurance of the effective payload power supply battery; the water environment is utilized while the influence of the power generation device on the environment and ecology is minimized, and the damage to fish is small.

[0031] 2. The application retains the basic characteristics of cableless power supply, has stronger concealment than cable equipment, the effective load has wider range when performing tasks, controllable power generation can reduce the recovery frequency and prolong the time of single continuous task execution. In addition, the bionic tree shape can also enhance the concealment.

[0032] 3. The cylindrical + tree structure of the application has simple structure, the length, size and number of piezoelectric composite flexible film can be designed and customized according to the size of the effective load and the power supply demand of the task, and the power supply can be embedded or carried on the effective load for implementation, which is conducive to the implementation of cluster survey or cluster combat with multiple effective loads. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a structural schematic diagram of the application;

[0034] Figure 2 is a sectional view schematic diagram of the application;

[0035] Figure 3 is a schematic diagram of the power generation principle of the piezoelectric composite flexible film in the application;

[0036] Figure 4 is a schematic diagram of the installation of the piezoelectric composite flexible film when the power generation carrier adopts a cylindrical shape in the application;

[0037] Figure 5 is a schematic diagram of the structure when the power generation carrier adopts a bionic tree trunk shape in the application;

[0038] Figure 6 is a schematic diagram of the bending deformation of the piezoelectric composite flexible film in the sinking process of the application under water.

[0039] In the figure, 1 is a piezoelectric composite flexible film, 2 is a load module, 3 is a power generation carrier, 4 is a float, 5 is a release hole, 6 is an electromagnetic valve at the outlet of a storage tank, 7 is a mixture of fish aggregation substance and feed in the storage tank, 8 is a piston in the storage tank, 9 is a chargeable and dischargeable power supply, 10 is a signal receiver, 11 is a control module, 12 is a shell, and 13 is a lifting unit. DETAILED DESCRIPTION

[0040] The technical solutions of the application will be further described in detail below in combination with the drawings.

[0041] The application can be implemented in many different forms, and should not be considered limited to the embodiments described herein, and the drawings are only schematic diagrams, the components are enlarged for clarity, and are not shown in actual size and proportion. Instead, these embodiments are provided in order to make the disclosure thorough and complete, and to fully express the scope of the application to those skilled in the art.

[0042] As Figure 1 ,Figure 2 The tree-shaped underwater fish gathering power generation device is characterized in that the device comprises a float, a power generation module, a load module, a signal receiver and a control module.

[0043] The float is used for providing buoyancy.

[0044] The load module comprises a shell, a chargeable power source, a lifting unit, a storage tank and a pressure pump.

[0045] The chargeable power source, the lifting unit, the storage tank and the pressure pump are arranged in the shell.

[0046] The storage tank is in the shape of a needle tube, is provided with a piston inside, and is provided with an electromagnetic valve at an outlet thereof, and is used for storing a mixture of fish gathering agents and feeds.

[0047] The pressure pump is used for driving the piston inside the storage tank, and pumps the mixture of fish gathering agents and feeds out of the outlet of the storage tank when the electromagnetic valve is opened.

[0048] The lifting unit is used for adjusting the weight of the load module, and thus controlling the rising or sinking of the load module.

[0049] The power generation module comprises a power generation carrier, a delivery main pipe and a plurality of piezoelectric composite flexible membranes.

[0050] The power generation carrier is hollow, and an upper end thereof is detachably connected with the float, and a lower end thereof is fixedly connected with the shell.

[0051] The delivery main pipe is arranged in the power generation carrier, one end of the delivery main pipe is closed, and the other end of the delivery main pipe penetrates into the shell from the power generation carrier, and is in close connection with the outlet of the storage tank.

[0052] A plurality of release holes are uniformly arranged on the side wall of the power generation carrier, and the release holes are in communication with the delivery main pipe through pipelines, and are used for releasing the mixture of fish gathering agents and feeds conveyed to the net cage through the central control hose driven by the pressure pump, so as to attract fish groups.

[0053] The plurality of piezoelectric composite flexible membranes are arranged on the outer wall of the power generation carrier, wherein the piezoelectric composite flexible membranes are in the shape of boards, one end of each of the piezoelectric composite flexible membranes is fixedly connected with the outer wall of the power generation carrier, and the other end of each of the piezoelectric composite flexible membranes is a free end, one end of each of the piezoelectric composite flexible membranes is connected with the chargeable power source through wires penetrating into the shell from the power generation carrier, and the piezoelectric composite flexible membranes are used for generating electric energy to charge the chargeable power source when being bent under stress.

[0054] The signal receiver is used for receiving external radio instructions and transmitting the radio instructions to the control module.

[0055] The control module is electrically connected to the rechargeable power supply, signal receiver, lifting unit, solenoid valve, and pressure pump, respectively, and is used to control the lifting unit, solenoid valve, pressure pump, and rechargeable power supply to work according to the received instructions.

[0056] The power generation principle of piezoelectric composite flexible membrane is as follows: Figure 3 As shown, when the piezoelectric composite flexible film is subjected to a downward external force, it will bend downward. The piezoelectric film bends along with the flexible substrate, exhibiting elongation deformation in the direction perpendicular to its thickness. This is due to the positive piezoelectric effect of the piezoelectric film. d 31 In this mode, the elongation deformation causes opposite charges to appear on the upper and lower surfaces of the piezoelectric film, i.e., the upper surface is positively charged and the lower surface is negatively charged. An electric field and potential difference are formed between the upper and lower surfaces of the piezoelectric film. This electrical energy is led out through wires and rectified by the circuit, and can be transmitted to charge the power supply in the load module. Similarly, when the piezoelectric composite flexible film is disturbed by an upward external force, the piezoelectric film has a shortening deformation perpendicular to the thickness direction. This elongation deformation causes its upper surface to be negatively charged and its lower surface to be positively charged, thus achieving the purpose of power generation. The power generation carrier can be a hollow cylinder or a hollow regular polygonal prism with sealed ends. Several piezoelectric composite flexible films form M groups of power generation units. Each group of power generation units contains N piezoelectric composite flexible films, where M is an even number greater than 1 and N is a natural number greater than or equal to 1. The M groups of power generation units are uniformly arranged circumferentially on the power generation carrier, and the N piezoelectric composite flexible films in each group of power generation units are equidistantly arranged along the axis of the power generation carrier. In the 2i-1 group of power generation units, the connection point between the piezoelectric composite flexible membrane and the power generation carrier is parallel to the axis of the power generation carrier, and the connection point between the piezoelectric composite flexible membrane and the power generation carrier in the 2i group of power generation units is perpendicular to the axis of the main line, where i is an integer greater than or equal to 1 and less than or equal to M / 2. Figure 4 As shown.

[0057] The power generation carrier can also take the shape of a biomimetic tree trunk, such as... Figure 5 As shown.

[0058] This invention discloses a method for operating the tree-shaped underwater fish-attracting power generation device, comprising the following steps:

[0059] Step 1), in the initial state, the rechargeable power supply has a preset charge, the solenoid valve is closed, and the fish-aggregating agent and feed are sealed in the storage tank; during the sinking movement of the tree-shaped underwater fish-aggregating power generation device below the water surface, when the piezoelectric composite flexible membrane bends and deforms upward due to the upward resistance of the water, electrical energy is generated due to the positive piezoelectric effect and transmitted to the rechargeable power supply for storage, such as... Figure 6 As shown, the pre-charging process is completed during the descent.

[0060] In step 2), the tree-shaped underwater fish gathering power generation device reaches the designated task water depth position and stays, after the signal receiver receives the signal, the control module controls the pressure pump to work, and the flow of fish gathering agent and feed is controlled through the electromagnetic valve to realize intermittent release and slow release;

[0061] The fish gathering agent and feed make the fish group move back and forth between the piezoelectric composite flexible membranes. The water flow disturbance around the moving fish group makes the cantilevered piezoelectric composite flexible membrane produce bending vibration. In addition, the swing of the fish body touches the piezoelectric composite flexible membrane during the swimming process, and the underwater or bottom ocean current and turbulent disturbance also make the cantilevered piezoelectric composite flexible membrane produce bending vibration to generate electric energy, which is then stored.

[0062] When the fish gathering agent and feed in the device are exhausted or the power supply is worn out to the state that needs to be repaired, the signal receiver and the control system receive the radio signal sent from the mother ship or the shore base, and then the device is controlled by the lifting unit to rise to the water surface. After the recovery and repair or replenishment of consumables are completed, it can be lowered again.

[0063] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with those in the context of the prior art, and unless defined as such, should not be interpreted to have idealized or overly formal meanings.

[0064] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A tree-shaped underwater fish gathering power generation device, characterized by, Includes a float, a power generation module, and a load module; The float is used to provide buoyancy; The load module includes a housing, a rechargeable power supply, a lifting unit, a storage tank, and a pressure pump; The rechargeable power supply, lifting unit, storage box, and pressure pump are all housed within the casing. The storage box is needle-shaped, with a piston inside and a solenoid valve at its outlet, for storing a mixture of fish polysaccharide and feed. The pressure pump is used to drive the piston inside the storage tank to pump the mixture of fish polysaccharide and feed out of the storage tank outlet when the solenoid valve is opened. The lifting unit is used to adjust the weight of the load module, thereby controlling its rise or fall. The power generation module includes a power generation carrier, a main transmission pipe, and several piezoelectric composite flexible membranes. The power generation carrier is hollow, with its upper end detachably connected to the float and its lower end fixedly connected to the shell; The main delivery pipe is installed inside the power generation carrier, with one end closed and the other end passing through the power generation carrier into the shell and then sealed to the outlet of the storage box. The sidewall of the power generation carrier is uniformly provided with several release holes, and the release holes are all connected to the main delivery pipe through pipes. They are used to release a mixture of fish polysaccharide and feed that is driven by a pressure pump and delivered to the net cage through a hollow hose, so as to attract fish. The piezoelectric composite flexible membranes are all disposed on the outer wall of the power generation carrier. The piezoelectric composite flexible membrane is a piezoelectric energy harvester, which is strip-shaped. One end is fixed to the outer wall of the power generation carrier, and the other end is a free end. The fixed end of the piezoelectric composite flexible membrane is connected to the rechargeable power supply through a wire that extends from the inside of the power generation carrier into the shell and then passes through it. This wire is used to generate electrical energy to charge the rechargeable power supply when it is bent under force.

2. The tree-shaped underwater fish-attracting power generating device according to claim 1, wherein It also includes a signal receiver and a control module; The signal receiver is used to receive external radio commands and transmit them to the control module; The control module is electrically connected to the rechargeable power supply, signal receiver, lifting unit, solenoid valve, and pressure pump, respectively, and is used to control the lifting unit, solenoid valve, pressure pump, and rechargeable power supply to work according to the received instructions.

3. The tree-shaped underwater fish-attracting power generating device according to claim 1, wherein The power generation carrier is a hollow cylinder or a hollow regular polygonal prism.

4. The tree-shaped underwater fish-attracting power generating device according to claim 3, wherein The plurality of piezoelectric composite flexible films form M groups of power generation units, each group of power generation units contains N piezoelectric composite flexible films, where M and N are natural numbers greater than or equal to 1. The M groups of power generation units are uniformly arranged circumferentially on the power generation carrier, and the N piezoelectric composite flexible films in each group of power generation units are equidistantly arranged along the axial direction of the power generation carrier.

5. The tree-shaped underwater fish-attracting power generating device according to claim 4, characterized by M is an even number greater than 1. In the (2i-1)th group of power generation units, the connection between the piezoelectric composite flexible membrane and the power generation carrier is parallel to the axis of the power generation carrier. In the (2i)th group of power generation units, the connection between the piezoelectric composite flexible membrane and the power generation carrier is perpendicular to the axis of the power generation carrier. i is an integer greater than or equal to 1 and less than or equal to M / 2.

6. The tree-shaped underwater fish-attracting power generating device according to claim 4, wherein The power generation carrier is designed in the shape of a biomimetic tree trunk.

7. A method of operating a tree-shaped underwater fish-attracting power generating device according to claim 2, characterized by, Includes the following processes: Step 1), in the initial state, the rechargeable power supply has a preset amount of power, the solenoid valve is closed, and the fish polymer and feed are sealed in the storage box; during the sinking movement of the tree-shaped underwater fish power generation device below the water surface, when the piezoelectric composite flexible membrane is bent and deformed upward due to the resistance of the water, the electrical energy generated due to the positive piezoelectric effect is transmitted to the rechargeable power supply for storage, completing the pre-charging process of the descent. Step 2) The tree-shaped underwater fish-attracting power generation device stops at the designated task depth. After the signal receiver receives the signal, the control module controls the pressure pump to work and controls the flow rate of fish-attracting agent and feed through the solenoid valve to achieve intermittent and slow release. Fish polymer and feed cause the fish to move back and forth between the piezoelectric composite flexible membranes. The water flow disturbance around the swimming fish causes the cantilevered piezoelectric composite flexible membranes to bend and vibrate. In addition, the swaying of the fish themselves during swimming, touching the piezoelectric composite flexible membranes, as well as the disturbance of ocean currents and turbulence underwater or at the bottom, all cause the cantilevered piezoelectric composite flexible membranes to bend and vibrate, generating electrical energy, which is then stored.

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