A net cage type fish gathering and power generation device under water and its working method

Abstract

The application discloses a net cage type underwater fish gathering and power generation device and a working method thereof, and belongs to the technical field of underwater fish gathering and power generation devices. The device comprises a load module, a connecting module and a net cage. The load module comprises a chargeable and dischargeable power supply, a storage tank and a pressure pump. The storage tank is in the shape of a needle tube, is provided with a piston in the inside, and is provided with an electromagnetic valve at the outlet. The pressure pump is used for driving the piston in the storage tank. The connecting module comprises N hollow anti-tension hoses. The net cage is made of hollow flexible net tubes, and the hollow flexible net tubes are in airtight connection with each other. One end of the hollow anti-tension hose is in airtight connection with the outlet of the storage tank, and the other end is connected with the net cage and is in airtight connection with the hollow flexible net tubes of the net cage. The hollow flexible net tubes of the net cage are uniformly provided with a plurality of release holes and a plurality of piezoelectric composite flexible membranes. The device can be carried on a vehicle or a submersible, and can provide longer power support for a long time for a far sea underwater cableless operation and a marine exploration task.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of underwater power supply equipment, in particular to a net cage type 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 existing underwater power supply system has a cable type power supply which needs a long electric 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 cableless 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, 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 great 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 change of water flow caused by fish swimming to propose a new concept for controllable power supply and power generation in the open sea. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a net cage type underwater fish gathering power generation device and a working method thereof in view of the defects involved in the background art and the application needs.

[0004] The present application adopts the following technical solutions to solve the above technical problems:

[0005] A net cage type underwater fish gathering power generation device, comprising a load module, a connection module and a net cage.

[0006] The load module is arranged on an underwater vehicle outside, and comprises a rechargeable power supply, a storage tank and a pressure pump.

[0007] The storage tank is in the shape of a needle tube, and a piston is arranged in the storage tank. An electromagnetic valve is arranged at the outlet of the storage tank for storing a mixture of pheromones and feed.

[0008] The pressure pump is used to drive the piston in the storage tank to pump out the mixture of pheromones and feed from the outlet of the storage tank when the electromagnetic valve is opened.

[0009] The connection module comprises N hollow anti-tension hoses, and N is a natural number greater than or equal to 1.

[0010] The net cage is made of hollow flexible net pipes, and each flexible net pipe is in close connection with each other;

[0011] The N hollow tensile-resistant pipes are in close connection with the outlet of the storage tank at one end and in close connection with the net cage at the other end and in close connection with the hollow flexible net pipes of the net cage;

[0012] The flexible net pipes of the net cage are uniformly provided with a plurality of release holes for releasing the mixture of the fish-attracting substance and the feed delivered to the net cage through the hollow tensile-resistant pipes driven by the pressure pump;

[0013] The flexible net pipes of the net cage are also uniformly provided with a plurality of piezoelectric composite flexible films; the piezoelectric composite flexible films are in the form of a strip and are fixed at one end to the flexible net pipes of the net cage and are free at the other end, and the fixed end of the piezoelectric composite flexible film is connected to the rechargeable power supply through the flexible net pipes of the net cage and the hollow tensile-resistant pipes of the connecting module in sequence and then penetrates out, for generating electric energy to charge the rechargeable power supply when being bent under stress.

[0014] As a further optimization scheme of the net cage-shaped underwater fish-attracting power generation device, the present application further comprises M net surfaces, M being a natural number greater than or equal to 1;

[0015] The net surface is a grid-shaped plane made of hollow flexible net pipes;

[0016] The M net surfaces are arranged in parallel in the net cage, and the hollow flexible net pipes of the M net surfaces are connected to and in close connection with the hollow flexible net pipes of the net cage;

[0017] The flexible net pipes of the net surface are uniformly provided with a plurality of release holes and a plurality of piezoelectric composite flexible films connected to the rechargeable power supply through wires.

[0018] As a further optimization scheme of the net cage-shaped underwater fish-attracting power generation device, the present application further comprises a signal receiver and a control module;

[0019] The signal receiver is used to receive external radio instructions and transmit them to the control module;

[0020] The control module is electrically connected to the electromagnetic valve, the pressure pump, the rechargeable power supply and the signal receiver, respectively, and is used to control the operation of the electromagnetic valve, the pressure pump and the rechargeable power supply according to the received instructions.

[0021] The present application also discloses a working method of the net cage-shaped underwater fish-attracting power generation device, comprising the following processes:

[0022] Step 1), in the initial state, the chargeable and dischargeable power supply in the load module has preset electric quantity, the flexible net cage is folded and stored in the inside of the underwater vehicle or submersible, the electromagnetic valve is closed, and the pheromone and feed are sealed in the storage box; when the vehicle performs a task underwater and starts to move, the net cage is unfolded in the water and is dragged at the tail of the vehicle; in the process of advancing of the vehicle, the piezoelectric composite flexible film with the flow area on the upper part of the net cage will be subjected to the resistance of the water flow, and the bending deformation occurs, and electric energy is generated due to the positive piezoelectric effect and is transmitted to the chargeable and dischargeable power supply for storage.

[0023] Step 2), after the signal receiver receives the radio signal, the control module controls the pressure pump to work, and the flow of the pheromone and the feed is controlled through the electromagnetic valve, so that intermittent release and slow release are realized.

[0024] The pheromone and the feed flow to the flexible net cage through the hollow anti-tension hose under the action of the pressure pump, are discharged through the release holes of each flexible net tube of the net cage, and attract the fish to approach.

[0025] The pheromone and the feed make the fish continuously shuttle in the inside of the flexible net cage, move back and forth between the piezoelectric composite flexible films, and the water flow disturbance around the swimming fish makes the cantilevered piezoelectric composite flexible film produce bending vibration, in addition, the swing of the fish body in the swimming process touches the piezoelectric composite flexible film through different net surfaces, and the ocean current and turbulent flow disturbance underwater or on the bottom of the sea all make the cantilevered piezoelectric composite flexible film produce bending vibration to generate electric energy, and then store the electric energy.

[0026] Compared with the prior art, the above technical scheme has the following technical effects:

[0027] 1. The present application simultaneously utilizes two factors of fish and water flow, adopts pheromone or information, feed and other more portable and economical consumables, obtains part of energy and resources from the underwater or marine environment and converts them into electric energy to increase the endurance of the effective load power supply battery; while utilizing the water environment, the influence of the power generation device on the environment and ecology is reduced as much as possible, and the damage to fish is small.

[0028] 2. The present application retains the basic characteristics of the cableless underwater power supply, is suitable for underwater cableless vehicles such as AUV, has stronger concealment compared with the cable type device, the effective load is more free in action when performing a task, and the controllable power generation design can reduce the recovery frequency and prolong the time of single continuous task execution.

[0029] 3. The net cage structure of the present application, the net cage area, the net cage content space size, the mesh size and the number of piezoelectric composite flexible films can be designed and customized according to the size of the payload and the power supply demand of the task, and the soft net cage can be folded and unfolded to facilitate embedding or carrying on the payload for power supply, which is also conducive to the implementation of cluster survey or cluster combat with multiple payloads. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The structure of the present application is shown in the figure;

[0031] Figure 2 The structure of a mesh on the net cage in the present application is shown in the figure;

[0032] Figure 3 The structure of the net surface in the net cage in the present application is shown in the figure;

[0033] Figure 4 The power generation principle of the piezoelectric composite flexible film in the present application is shown in the figure;

[0034] Figure 5 The structure of the load module in the present application is shown in the figure.

[0035] In the figure, 1-piezoelectric composite flexible film, 2-load module, 3-net cage, 4-hollow anti-tension hose, 5-net surface, 6-release hole, 7-piston of storage tank, 8-electromagnetic valve at the outlet of storage tank, 9-mixture of attractant and feed in the storage tank, 10-rechargeable power supply, 11-signal receiver, 12-control module. DETAILED DESCRIPTION

[0036] The technical solutions of the present application will be further described in detail below in combination with the drawings.

[0037] The present 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, the components are enlarged for clarity, and are not shown in actual size and proportion. Instead, these embodiments are provided to make the present disclosure thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0038] As Figure 1 shown, the present application discloses a net cage type underwater fish gathering power generation device, which comprises a load module, a connecting module and a net cage;

[0039] The load module is arranged on an underwater vehicle in the outside world, and comprises a rechargeable power supply, a storage tank and a pressure pump;

[0040] The storage tank is in the shape of a needle tube, a piston is arranged in the storage tank, and an electromagnetic valve is arranged at the outlet of the storage tank, which is used to store a mixture of attractant and feed;

[0041] 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.

[0042] The connecting module comprises N hollow anti-tension hoses, N being a natural number greater than or equal to 1;

[0043] The net cage is made of hollow flexible net pipes, and the hollow flexible net pipes are in close communication between each other;

[0044] One end of each of the N hollow anti-tension hoses is in close communication with the outlet of the storage tank, and the other end is in close communication with the net cage and the hollow flexible net pipes of the net cage;

[0045] As shown in Figure 2 The flexible net pipes of the net cage are uniformly provided with a plurality of release holes for releasing the mixture of the polyfish and the feed conveyed to the net cage by the hollow anti-tension hoses driven by the pressure pump to attract the fish school;

[0046] The flexible net pipes of the net cage are also uniformly provided with a plurality of piezoelectric composite flexible membranes; the piezoelectric composite flexible membranes are in the form of boards and are fixed at one end to the flexible net pipes of the net cage and are free at the other end, and the fixed end of the piezoelectric composite flexible membranes is connected to the rechargeable power supply through the flexible net pipes of the net cage and the hollow anti-tension hoses of the connecting module in sequence and then outwards, for generating electric energy to charge the rechargeable power supply when being bent under stress.

[0047] As shown in Figure 3 The application also comprises M net surfaces, M being a natural number greater than or equal to 1;

[0048] The net surfaces are grid-shaped planes made of hollow flexible net pipes;

[0049] The M net surfaces are arranged in parallel in the net cage, and the hollow flexible net pipes of the M net surfaces are in close communication with the hollow flexible net pipes of the net cage;

[0050] The flexible net pipes of the net surfaces are uniformly provided with a plurality of release holes and a plurality of piezoelectric composite flexible membranes connected to the rechargeable power supply through wires.

[0051] The power generation principle of the piezoelectric composite flexible membrane is shown in Figure 4 When the piezoelectric composite flexible membrane is disturbed by downward external force, it will bend downward, and the piezoelectric film will bend along with the flexible substrate board, and there will be an elongation deformation in the direction perpendicular to the thickness, because the piezoelectric film has a positive piezoelectric effect d 31The elongation deformation causes the upper surface of the piezoelectric film to have positive charge and the lower surface to have negative charge, and an electric field and a potential difference are formed between the upper and lower surfaces of the piezoelectric film. The electric energy is led out through a wire and is rectified through a circuit, and is transmitted to the power supply in the load module to charge. Similarly, when the piezoelectric composite flexible film is disturbed by an upward external force, the piezoelectric film has a shortening deformation in the direction perpendicular to the thickness, and the elongation deformation causes the upper surface to have negative charge and the lower surface to have positive charge, so that the power generation purpose can be achieved.

[0052] As shown in Figure 5 The application also comprises a signal receiver and a control module;

[0053] The signal receiver is used for receiving external radio instructions and transmitting them to the control module;

[0054] The control module is electrically connected with the electromagnetic valve, the pressure pump, the chargeable and dischargeable power supply and the signal receiver respectively, and is used for controlling the electromagnetic valve, the pressure pump and the chargeable and dischargeable power supply to work according to the received instructions.

[0055] The control module can not only control the flow of the fish aggregating substance and the feed, but also protect and feedback the overcurrent of the chargeable and dischargeable power supply. The chargeable and dischargeable power supply can receive the electric energy generated by the piezoelectric composite flexible film due to continuous bending, and can also supply electric energy for the other effective load, the signal receiver, the control system and the like.

[0056] The application also discloses a working method of the net cage-shaped underwater fish aggregating power generation device.

[0057] Step 1), in the initial state, the chargeable and dischargeable power supply in the load module has preset electric quantity, the flexible net cage is folded and stored in the interior of the underwater vehicle or the submersible, the electromagnetic valve is closed, and the fish aggregating substance and the feed are sealed in the storage box; when the vehicle performs a task and starts to move underwater, the net cage is unfolded in the water and is dragged at the tail of the vehicle; in the process of advancing, the piezoelectric composite flexible film with the pressure area of the upstream part of the net cage will be subjected to the resistance of the water flow, be bent and deformed, and generate electric energy due to the positive piezoelectric effect and transmit the electric energy to the chargeable and dischargeable power supply for storage;

[0058] Step 2), after the signal receiver receives the radio signal, the control module controls the pressure pump to work, and controls the flow of the fish aggregating substance and the feed through the electromagnetic valve, so that the intermittent release and slow release are realized;

[0059] The fish aggregating substance and the feed flow to the flexible net cage through the hollow anti-tension hose under the action of the pressure pump, are discharged through the release holes of each flexible net tube of the net cage, and attract the fish to approach;

[0060] The polyfish and the feed make the fish swim in the flexible net cage, and the fish swim back and forth between the piezoelectric composite flexible films. The water flow disturbance around the swimming fish generates bending vibration of the cantilevered piezoelectric composite flexible film. In addition, the swing of the fish body touches the piezoelectric composite flexible film during swimming, and the underwater or bottom current and turbulent disturbance also make the cantilevered piezoelectric composite flexible film generate bending vibration to generate electric energy, which is stored.

[0061] The mesh of the net cage can be set larger, so that the fish can freely enter and exit in all directions around the periphery of the net cage, without the need to capture and release the fish from the cage opening, which can minimize the impact on marine life and ecology.

[0062] 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 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 in an idealized or overly formal sense unless otherwise defined.

[0063] 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 net cage type fish gathering and power generating apparatus under water, characterized by, The device comprises a load module, a connecting module and a net cage. The load module is arranged on an underwater vehicle, and comprises a rechargeable power source, a storage tank and a pressure pump. The storage tank is in the shape of a needle tube, and is provided with a piston inside and an electromagnetic valve at the outlet. The pressure pump is used to drive the piston inside the storage tank, and pump the mixture of attractant and feed out of the outlet of the storage tank when the electromagnetic valve is opened. The connecting module comprises N hollow anti-tension hoses, where N is a natural number greater than or equal to 1. The net cage is made of hollow flexible net tubes, and the hollow flexible net tubes are in close communication. One end of each of the N hollow anti-tension hoses is connected to the outlet of the storage tank, and the other end is connected to the net cage and in close communication with the hollow flexible net tubes of the net cage. The hollow flexible net tubes of the net cage are uniformly provided with a plurality of release holes for releasing the mixture of attractant and feed delivered by the pressure pump through the hollow anti-tension hoses to the net cage to attract fish. The hollow flexible net tubes of the net cage are also uniformly provided with a plurality of piezoelectric composite flexible membranes.

2. The net-cage type underwater fish aggregating power generating apparatus according to claim 1, characterized by The piezoelectric composite flexible membranes are in the shape of boards, and one end is fixed to the hollow flexible net tubes of the net cage, and the other end is free. The piezoelectric composite flexible membranes are connected to the rechargeable power source through wires passing through the hollow flexible net tubes of the net cage and the hollow anti-tension hoses of the connecting module. The device also comprises M net surfaces, where M is a natural number greater than or equal to 1. The net surfaces are in the shape of grid planes made of hollow flexible net tubes.

3. The net-cage type underwater fish aggregating power generating apparatus according to claim 1, wherein The M net surfaces are arranged in parallel in the net cage, and the hollow flexible net tubes of the M net surfaces are connected to and in close communication with the hollow flexible net tubes of the net cage. The hollow flexible net tubes of the net surfaces are uniformly provided with a plurality of release holes and a plurality of piezoelectric composite flexible membranes connected to the rechargeable power source through wires. The device also comprises a signal receiver and a control module.

4. The method of operating a net-cage like underwater fish-attracting and power generating apparatus according to claim 3, characterized in that, The signal receiver is used to receive external radio signals and transmit them to the control module. The control module is electrically connected to the electromagnetic valve, the pressure pump, the rechargeable power source and the signal receiver, and is used to control the operation of the electromagnetic valve, the pressure pump and the rechargeable power source according to the received signals. The device comprises the following processes: Step 1): In the initial state, the rechargeable power source in the load module has a preset amount of electricity, the flexible net cage is folded and stored inside the underwater vehicle or submersible, the electromagnetic valve is closed, and the attractant and feed are sealed in the storage tank; when the vehicle is executing a task underwater and starts to move, the net cage is deployed in the water and is dragged at the tail of the vehicle; during the forward movement of the vehicle, the piezoelectric composite flexible membranes on the upper part of the net cage with the area of the flow will be subjected to the resistance of the water flow, and will be bent and deformed, and will generate electric energy due to the positive piezoelectric effect and will be stored in the rechargeable power source; Step 2): After the signal receiver receives the radio signal, the control module controls the operation of the pressure pump, and controls the flow of the attractant and feed through the electromagnetic valve to achieve intermittent release and slow release. Polyfish and feed under the action of pressure pump through the hollow anti-pulling hose to the flexible net cage, through the release hole of each flexible net tube of the net cage, the fish group is attracted to the flexible net cage; Polyfish and feed make the fish group constantly shuttle in the flexible net cage, and constantly move back and forth between each piezoelectric composite flexible film. The water flow disturbance around the swimming fish group makes the cantilevered piezoelectric composite flexible film produce bending vibration. In addition, the swing of the fish body touches the piezoelectric composite flexible film during swimming through different net surfaces, and the underwater or bottom ocean current and turbulent disturbance also make the cantilevered piezoelectric composite flexible film produce bending vibration to generate electric energy, which is stored.

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