阅读说明：本技术 一种球形纳米摩擦发电机单元及基于该发电机单元的网箱 (Spherical nanometer friction generator unit and net cage based on same ) 是由 刘恒序 李锦蓝 陈海龙 孔凡凯 郑雄波 刘鸣 闫锋 于 2020-05-19 设计创作，主要内容包括：本发明属于海洋发电及深海水产养殖技术领域,具体涉及一种球形纳米摩擦发电机单元及基于该发电机单元的网箱。本发明利用养殖网箱在海水中易受波浪振荡影响的特点,将球形纳米摩擦发电机单元安置于网箱网衣上,通过球形纳米摩擦发电机单元有效吸收低频波浪能,实现网箱养殖过程中的自供电,充分利用波浪能发电的同时可在一定程度上消减深海养殖网箱在恶劣环境下的振荡幅度,提高深海养殖网箱的稳定性。本发明的球形纳米摩擦发电机单元采用创新性双层结构,增大了纳米摩擦面积,且内部球壳通过安装转轴装置,可绕转轴自由转动,使内部球壳内层空间中的硅胶球在外部空间中硅胶球摩擦滚动的带动下滚动,进一步促进了纳米摩擦效果,提高了发电效率。(The invention belongs to the technical field of ocean power generation and deep sea aquaculture, and particularly relates to a spherical nano friction generator unit and a net cage based on the generator unit. According to the invention, by utilizing the characteristic that the aquaculture net cage is susceptible to wave oscillation in seawater, the spherical nano friction generator unit is arranged on the net cage, low-frequency wave energy is effectively absorbed by the spherical nano friction generator unit, self power supply in the net cage aquaculture process is realized, the wave energy is fully utilized to generate electricity, the oscillation amplitude of the deep sea aquaculture net cage in a severe environment can be reduced to a certain extent, and the stability of the deep sea aquaculture net cage is improved. The spherical nano friction generator unit adopts an innovative double-layer structure, the nano friction area is increased, the inner spherical shell can freely rotate around the rotating shaft by installing the rotating shaft device, and the silica gel ball in the inner layer space of the inner spherical shell is driven to roll by the friction rolling of the silica gel ball in the outer space, so that the nano friction effect is further promoted, and the generating efficiency is improved.)

1. A spherical nano friction generator unit characterized in that: comprises a hollow outer spherical shell and an inner spherical shell; the inner spherical shell is arranged inside the outer spherical shell, and the upper end and the lower end of the inner spherical shell are respectively connected with the outer spherical shell through connecting devices; the connecting device is positioned on the common axis of the outer spherical shell and the inner spherical shell, one end of the connecting device is fixed at the inner side of the outer spherical shell, and the other end of the connecting device is connected with the inner spherical shell through the rotating shaft device; the inner side of the outer spherical shell, the outer side and the inner side of the inner spherical shell are coated with nano friction material coatings, a first friction ball is arranged between the inner side of the outer spherical shell and the outer side of the inner spherical shell, and a second friction ball is arranged in the inner spherical shell.

2. A spherical nano-friction generator unit according to claim 1, characterized in that: the first friction ball and the second friction ball are both silica gel balls.

3. Spherical nano-friction generator unit according to claim 1 or 2, characterized in that: the first friction ball and the second friction ball are the same in size, and the radius of the first friction ball is slightly smaller than the radius difference between the outer spherical shell and the inner spherical shell.

4. A net cage based on spherical nanometer friction generator unit, its characterized in that: comprises a net cage frame and a double-layer netting; the double-layer netting comprises an inner netting and an outer netting; the meshes of the external netting are larger than those of the internal netting, and a cable is arranged in the external netting; each net knot of the external net is provided with a spherical nano friction generator unit; the spherical nano friction generator unit comprises a hollow outer spherical shell and an inner spherical shell; the inner spherical shell is arranged inside the outer spherical shell, and the upper end and the lower end of the inner spherical shell are respectively connected with the outer spherical shell through connecting devices; the connecting device is positioned on the common axis of the outer spherical shell and the inner spherical shell, one end of the connecting device is fixed at the inner side of the outer spherical shell, and the other end of the connecting device is connected with the inner spherical shell through the rotating shaft device; the inner side of the outer spherical shell, the outer side and the inner side of the inner spherical shell are coated with nano friction material coatings, a first friction ball is arranged between the inner side of the outer spherical shell and the outer side of the inner spherical shell, and a second friction ball is arranged in the inner spherical shell.

5. The net cage based on spherical nanometer friction generator unit of claim 4, characterized in that: the outer spherical shell of the spherical nano friction generator unit is connected with one end of a flexible rope, and the other end of the flexible rope is connected with a net knot of an external netting through a closed spherical hinge; cables are arranged inside the flexible rope and the closed spherical hinge; the length of the flexible rope is slightly less than 1/2 of the side length of the mesh of the outer netting.

6. The net cage based on spherical nano-friction generator unit according to claim 4 or 5, characterized in that: the first friction ball and the second friction ball are both silica gel balls.

7. The net cage based on spherical nano-friction generator unit according to claim 4 or 5, characterized in that: the first friction ball and the second friction ball are the same in size, and the radius of the first friction ball is slightly smaller than the radius difference between the outer spherical shell and the inner spherical shell.

8. The net cage based on spherical nanometer friction generator unit of claim 6, characterized in that: the first friction ball and the second friction ball are the same in size, and the radius of the first friction ball is slightly smaller than the radius difference between the outer spherical shell and the inner spherical shell.

Technical Field

The invention belongs to the technical field of ocean power generation and deep sea aquaculture, and particularly relates to a spherical nano friction generator unit and a net cage based on the generator unit.

Background

Nano materials: the nano-scale structural material, referred to as nano-material (nanometer material) for short, refers to a material having at least one dimension in a three-dimensional space in a nanometer size (0.1-100nm) or composed of them as basic units, which is approximately equivalent to a dimension in which 10-100 atoms are closely arranged. Since its size is already close to the coherence length of the electrons, its properties vary greatly due to self-organization by strong coherence. Moreover, its dimensions are close to the wavelength of light, and, in addition, it has the special effect of having a large surface, so that it often exhibits properties different from those exhibited by the substance in its bulk state. By utilizing the characteristics of the nano material, the low-frequency energy in the wave energy can be fully utilized.

The nanometer friction generator comprises: the two polymer films plated with the metal electrodes are bonded together to form a device, the device is mechanically deformed under the action of external force to cause mutual friction between the two polymer films, potential difference is formed according to a surface layer with positive polarity in a friction electrode sequence, the two metal electrodes are used as an electric energy output end of a generator, induced charges can be generated on the surface through electrostatic induction, and the induced charges flow through an external circuit under the driving of the triboelectric potential to form current.

With the rapid development of the scientific and technological level and the increasing improvement of the living standard of people, the development and utilization of ocean resources by human beings are continuously increased. The development of the mariculture industry is the basis for guaranteeing the supply of high-quality protein and meeting the increasing nutritional diet requirements of people. In recent years, the ecological environment of the offshore culture water area faces a serious challenge due to the reduction of fish quality caused by the increasingly saturated offshore shallow water cage culture. The development of deep-sea cage culture has important significance for expanding culture sea areas, reducing environmental pressure and improving marine product quality.

The deep sea aquaculture net cage is mainly characterized in that the offshore distance is long, and the problem of energy supply becomes an important reason for restricting the automation of the deep sea aquaculture net cage. The construction difficulty of the long-distance power transmission and transmission is higher, the cost is high, and compared with the prior art, the power supply by using ocean energy (such as wave energy) has great advantages. The existing wave power generation device mainly adopts hydraulic transmission matched with an electromagnetic generator, and has the disadvantages of large size, high manufacturing cost and high installation and maintenance difficulty; and the intermediate links in the power generation process are complex, so that the defects of insufficient sea condition utilization, low wave energy utilization efficiency, small power generation power and instability are generally existed.

Disclosure of Invention

The invention aims to provide a spherical nano friction generator unit which is light in weight, small in motion resistance in water waves and easy to array.

The purpose of the invention is realized by the following technical scheme: comprises a hollow outer spherical shell and an inner spherical shell; the inner spherical shell is arranged inside the outer spherical shell, and the upper end and the lower end of the inner spherical shell are respectively connected with the outer spherical shell through connecting devices; the connecting device is positioned on the common axis of the outer spherical shell and the inner spherical shell, one end of the connecting device is fixed at the inner side of the outer spherical shell, and the other end of the connecting device is connected with the inner spherical shell through the rotating shaft device; the inner side of the outer spherical shell, the outer side and the inner side of the inner spherical shell are coated with nano friction material coatings, a first friction ball is arranged between the inner side of the outer spherical shell and the outer side of the inner spherical shell, and a second friction ball is arranged in the inner spherical shell.

The present invention may further comprise:

the first friction ball and the second friction ball are both silica gel balls.

The first friction ball and the second friction ball are the same in size, and the radius of the first friction ball is slightly smaller than the radius difference between the outer spherical shell and the inner spherical shell.

The invention also aims to provide a net cage based on the spherical nano friction generator unit.

The purpose of the invention is realized by the following technical scheme: comprises a net cage frame and a double-layer netting; the double-layer netting comprises an inner netting and an outer netting; the meshes of the external netting are larger than those of the internal netting, and a cable is arranged in the external netting; each net knot of the external net is provided with a spherical nano friction generator unit; the spherical nano friction generator unit comprises a hollow outer spherical shell and an inner spherical shell; the inner spherical shell is arranged inside the outer spherical shell, and the upper end and the lower end of the inner spherical shell are respectively connected with the outer spherical shell through connecting devices; the connecting device is positioned on the common axis of the outer spherical shell and the inner spherical shell, one end of the connecting device is fixed at the inner side of the outer spherical shell, and the other end of the connecting device is connected with the inner spherical shell through the rotating shaft device; the inner side of the outer spherical shell, the outer side and the inner side of the inner spherical shell are coated with nano friction material coatings, a first friction ball is arranged between the inner side of the outer spherical shell and the outer side of the inner spherical shell, and a second friction ball is arranged in the inner spherical shell.

The present invention may further comprise:

the outer spherical shell of the spherical nano friction generator unit is connected with one end of a flexible rope, and the other end of the flexible rope is connected with a net knot of an external netting through a closed spherical hinge; cables are arranged inside the flexible rope and the closed spherical hinge; the length of the flexible rope is slightly less than 1/2 of the side length of the mesh of the outer netting.

The first friction ball and the second friction ball are both silica gel balls.

The first friction ball and the second friction ball are the same in size, and the radius of the first friction ball is slightly smaller than the radius difference between the outer spherical shell and the inner spherical shell.

The invention has the beneficial effects that:

according to the invention, by utilizing the characteristic that the aquaculture net cage is susceptible to wave oscillation in seawater, the spherical nano friction generator unit is arranged on the net cage, low-frequency wave energy is effectively absorbed by the spherical nano friction generator unit, self power supply in the net cage aquaculture process is realized, the wave energy is fully utilized to generate electricity, the oscillation amplitude of the deep sea aquaculture net cage in a severe environment can be reduced to a certain extent, and the stability of the deep sea aquaculture net cage is improved. The spherical nano friction generator unit adopts an innovative double-layer structure, the nano friction area is increased, the inner spherical shell can freely rotate around the rotating shaft by installing the rotating shaft device, and the silica gel ball in the inner layer space of the inner spherical shell is driven to roll by the friction rolling of the silica gel ball in the outer space, so that the nano friction effect is further promoted, and the generating efficiency is improved.

Compared with the traditional mode that the electromagnetic generator collects wave energy, the wave energy power generation system adopts the mode of arraying the wave energy power generation units, achieves the overall power generation effect by simultaneously working each power generation unit, can adjust the number of the power generation units, and is flexible and convenient. Wherein, each power generation unit is small in volume, simple in installation, convenient in disassembly and convenient in maintenance of the whole device. Compared with the traditional mode that the electromagnetic generator collects wave energy, the spherical nano friction generator unit provided by the invention has the advantages of simple structure, low cost, suitability for ocean low-frequency wave environment, high wave energy utilization rate, high power generation efficiency, no direct contact with seawater, long service life and small maintenance difficulty.

Drawings

Fig. 1 is a schematic structural diagram of a net cage based on a spherical nano friction generator unit according to the invention.

Fig. 2 is a cross-sectional view of a spherical nano-friction generator unit of the present invention.

Fig. 3 is an overall effect diagram of the connection of the spherical nano friction generator unit and the net in the invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

The invention provides a spherical nano friction generator unit, and provides a self-powered net cage based on the spherical nano friction generator unit by combining with a net of a culture net cage. A net cage based on spherical nanometer friction generator units mainly comprises three parts: a cylindrical net cage frame, a double-layer net and a spherical nano friction generator unit. The net cage frame is formed by welding an upper annular pipe, a lower annular pipe and four vertical rods which are symmetrically arranged in an annular shape in the middle; the double-layer netting consists of four arc-shaped double-layer netting on the side wall and a netting bottom; the spherical nanometer friction generator unit is a totally enclosed sphere structure with a silica gel sphere inside and is connected with the netting through a rope and hinge combined device. The invention utilizes a multi-point arranged spherical friction nano generator structure attached to the netting to collect wave energy, realizes high-efficiency collection of low-frequency waves and irregular waves, and converts the wave energy into electric energy to be provided to the aquaculture net cage monitoring system. Realizes the automatic control of the self-supply of energy and the culture process.

The cylindrical net cage frame is used for connecting the netting and transmitting the converted electric energy. The double-layer netting not only plays a role of preventing cultured organisms from escaping from the traditional netting, but also serves as a carrier for bearing the spherical nano friction generator and a carrier for power transmission. The spherical nanometer friction generator unit is a main body for capturing wave energy to generate electricity.

The net cage frame consists of an upper annular pipe, four middle cylindrical vertical rods and a lower annular pipe; the double-layer netting consists of four arc-shaped double-layer netting on the side wall and a netting bottom; the spherical nano friction generator unit is a totally enclosed sphere structure with a built-in silica gel sphere.

The net cage frame is of a cylindrical structure formed by welding the upper circular ring-shaped pipe, four symmetrically arranged vertical rods in the middle and the bottom circular ring-shaped pipe, and is stable in structure and forms a large breeding space. The side net of the double-layer netting consists of an inner layer netting and an outer layer netting. Wherein, the mesh of the internal common netting is smaller, which can effectively prevent the escape of the cultured organisms; the external power generation netting has larger meshes and stronger flexibility, can bear a plurality of spherical nano friction generators, and can be internally provided with cables for installing the spherical nano friction generator units and transmitting the generated power. The spherical nanometer friction generator unit is characterized in that two spaces are formed by an inner spherical shell and an outer spherical shell, two built-in silica gel balls are respectively positioned in the two spaces and are in contact with the nanometer friction coating, and all the spherical nanometer friction generator units are positioned on the outer side of the external netting.

The utility model provides a spherical nanometer friction generator unit, overall structure comprises two different hollow spherical shells that scribble nanometer friction material of size, two silica gel balls that the size is the same, connecting device and pivot mechanism. Wherein, the less hollow spherical shell of radius passes through connecting device to be settled inside the great spherical shell of radius, and connecting device comprises two parts that length is the same, is located inside and outside two spherical shell intermediate layer regions and all is located the common axis of two spherical shells, is used for connecting the upper end and the lower extreme of inside and outside two spherical shells respectively to form inside and outside spherical shell intermediate region and inside spherical shell internal region two-layer uniform space. The connecting device is characterized in that one end of the connecting device is connected with the upper end or the lower end inside the external spherical shell in an adhesive mode, the other end of the connecting device is connected with the rotating shaft device at the upper end or the lower end of the internal spherical shell in an adhesive mode, the rotating shaft device is connected with the upper end and the lower end of the internal spherical shell in an adhesive mode, and the internal spherical shell can freely rotate around the rotating shaft. The two silica gel balls with the same size are respectively positioned in the inner and outer spherical shell intermediate layers and the inner spherical shell inner layer, the size of the silica gel ball is slightly smaller than the radius difference of the two spherical shells, and the silica gel ball can freely roll in the inner and outer spherical shell intermediate layers and the inner spherical shell inner layer. The hollow spherical shells coated with the nano friction materials and different in size are characterized in that the nano friction material coatings are respectively positioned on the inner side of the outer spherical shell, the outer side of the inner spherical shell and the inner side of the inner spherical shell. And fully rubbing with silica gel balls respectively positioned in the inner layer area and the outer layer area.

Each spherical nanometer friction generator unit is arranged on the net of the aquaculture net cage through a device combining a rope and a hinge. Wherein, a plurality of spherical nanometer friction generator units arranged in the vertical direction are a generating group, and a plurality of generating groups on the same arc-shaped netting form a generating group. The whole power generation system is composed of four power generation groups. And each power generation unit operates independently.

Each net joint of the external power generation netting is provided with a closed spherical hinge structure which is connected with the net rope at the net joint in an adhesive way. And the spherical hinge structure is glued with a waterproof flexible rope which can be internally provided with a cable, and the other end of the flexible rope is glued with a spherical nano friction generator unit. The spherical hinge can drive the flexible rope to flexibly twist in a large angle and is used for enhancing the oscillation effect of the spherical nano friction power generation unit; the whole structure is internally communicated, and a cable is arranged in the whole structure and used for transmitting the electric energy generated by the spherical nano friction generator.

The tail end of the spherical hinge at the net knot is connected with a cable arranged in the net rope of the netting, and the connecting part adopts a structure of combining a sealing washer in a threaded manner, so that the airtightness of the device can be effectively guaranteed, and meanwhile, the spherical nano friction generator is convenient to disassemble and replace, and the inspection and maintenance of the power generation device are facilitated.

The waterproof flexible rope is used as an anchoring device of the spherical nano friction generator and a power transmission carrier device of the spherical nano friction generator. The length of the generator is slightly less than 1/2 of the side length of the mesh of the power generation netting, so that collision between spherical nanometer friction generator units connected with adjacent net knots can be avoided.

The invention utilizes the characteristic that the submersible net cage and the netting are easy to vibrate by the impact of waves in deep sea to arrange and combine the novel spherical nano friction engine on the netting in a multi-point array. With the impact of sea waves, the netting drives the spherical nano friction generator attached to the netting to oscillate, and absorbed wave energy is converted into electric energy through the spherical nano friction generator. The high-efficiency conversion of low-frequency wave energy can be realized, and the self-powered effect of the aquaculture net cage can be realized by a simple and convenient power generation device through effectively utilizing the net cage structure.

According to the invention, a new ocean energy collection technology is applied to an ocean culture platform, the spherical nano friction generator unit is arranged on the net cover of the net cage by utilizing the characteristic that the culture net cage is easily influenced by wave oscillation in seawater, low-frequency wave energy is effectively absorbed by the spherical nano friction generator unit to supply power to devices (such as a culture net cage monitoring system) in the culture net cage, self-power supply in the process of net cage culture is realized, the wave energy is fully utilized to generate power, the oscillation amplitude of the deep sea culture net cage in a severe environment can be eliminated to a certain extent, and the stability of the deep sea culture net cage is improved.

The spherical nano friction generator unit enhances the nano friction power generation effect, and adopts an innovative double-layer structure to increase the nano friction area. And the inner spherical shell can freely rotate around the rotating shaft by installing the rotating shaft device. Therefore, the silica gel ball in the inner space of the inner spherical shell can roll under the driving of the friction rolling of the silica gel ball in the outer space, the nano friction effect is further promoted, and the power generation efficiency is improved.

Compared with the traditional mode that the electromagnetic generator collects wave energy, the wave energy power generation system adopts the mode of arraying the wave energy power generation units, achieves the overall power generation effect by simultaneously working each power generation unit, can adjust the number of the power generation units, and is flexible and convenient. Wherein, each power generation unit is small in volume, simple in installation, convenient in disassembly and convenient in maintenance of the whole device.

Compared with the traditional mode that the electromagnetic generator collects wave energy, the spherical nano friction generator unit provided by the invention has the advantages of simple structure, low cost, suitability for ocean low-frequency wave environment, high wave energy utilization rate, high power generation efficiency, no direct contact with seawater, long service life and small maintenance difficulty.

As shown in fig. 1, the overall power generation apparatus is divided into four power generation groups. A plurality of spherical nanometer friction generator units arranged in the vertical direction are taken as a power generation group, and a plurality of power generation groups on the same arc-shaped net form a power generation group.

As shown in fig. 2, the nano friction power generation unit has two spaces formed by two spherical shells inside and outside, and two silica gel balls with the same size are respectively located in the two spaces. When the spherical nanometer friction generator moves along with waves, the silica gel ball in the external space is fully rubbed with the nanometer friction coatings on the inner sides of the external spherical shells and the nanometer friction coatings on the outer sides of the internal spherical shells, and drives the other silica gel ball in the internal space to roll and fully rub with the nanometer friction coatings on the inner sides of the internal spherical shells to continuously generate electric energy.

As shown in figure 3, a closed spherical hinge structure is arranged at each net joint of the external power generation netting and is glued with the net ropes at the net joints. The spherical hinge structure is glued with a waterproof flexible rope, and the other end of the flexible rope is glued with a spherical nano friction generator. The spherical hinge can drive the flexible rope to flexibly twist at a large angle, the whole structure is internally communicated, the built-in cable can transmit electric energy generated by the spherical nano friction generator, the spherical nano friction generator can fully oscillate along with wave oscillation, and the silica gel ball and the inner wall coating which are specially treated in the spherical nano friction generator are enabled to generate electricity through friction. Wave energy is fully utilized by means of wave motion, and electric energy is continuously generated.

As shown in fig. 3, the tail end of the spherical hinge at the net node is connected with a cable arranged in the net rope of the netting, and the connecting part adopts a structure of combining a sealing washer by threads, so that the tightness of the device is effectively ensured, partial disassembly and replacement of the spherical nano friction generator can be realized, and the inspection and maintenance of the power generation device are facilitated.

A cylindrical net cage frame of a net cage based on a spherical nano friction generator unit is composed of an upper annular pipe 1-1, four cylindrical vertical rods 1-2 and a lower annular pipe 1-3; the double-layer netting consists of four arc-shaped double-layer netting on the side wall and a netting bottom; the spherical nano friction generator unit is a totally enclosed sphere structure with a built-in silica gel sphere.

The net cage frame is of a cylindrical structure formed by welding the upper circular ring-shaped pipe, four symmetrically arranged vertical rods in the middle and the bottom circular ring-shaped pipe, and is stable in structure and forms a large breeding space. The side net of the double-layer netting consists of an inner layer netting and an outer layer netting. Wherein, the 2-1 mesh of the internal common netting is smaller, which can effectively prevent the escape of the cultured organisms; the external power generation netting 2-2 has larger meshes and thicker net ropes, has stronger waterproofness and flexibility, can bear a plurality of spherical nano friction generators, and is internally provided with a cable for installing the spherical nano friction generator units and transmitting the generated power. The spherical nanometer friction generator unit is characterized in that two spaces are formed by an inner spherical shell and an outer spherical shell, the two built-in silica gel balls are respectively positioned in the two spaces, and all spherical nanometer friction generator units which are in contact with the nanometer friction coating are positioned outside the outer netting.

A spherical nanometer friction generator unit is composed of two hollow spherical shells 4-1 and 4-2 with different sizes and coated with nanometer friction materials, two silica gel balls 7-1 and 7-2 with the same size, a connecting device 6-1 and a rotating shaft device 6-2. The hollow spherical shell 4-2 with the smaller radius is arranged inside the spherical shell 4-1 with the larger radius through a connecting device, and the connecting device 6-1 consists of two parts with the same length, is positioned in the middle layer area of the inner spherical shell and the outer spherical shell and is positioned on the common axis of the two spherical shells and is respectively used for connecting the upper end and the lower end of the inner spherical shell and the outer spherical shell, so that two layers of uniform spaces of the middle area A of the inner spherical shell and the middle area B of the inner spherical shell are formed. The connecting device is characterized in that one end of the connecting device is connected with the upper end or the lower end in the outer spherical shell in a gluing mode, the other end of the connecting device is connected with a rotating shaft device 6-2 at the upper end or the lower end of the inner spherical shell in a gluing mode, the rotating shaft device 6-2 is connected with the upper end and the lower end of the inner spherical shell in a gluing mode, and the inner spherical shell can freely rotate around a rotating shaft. The two silica gel balls with the same size are respectively positioned in the inner spherical shell intermediate layer A and the outer spherical shell intermediate layer B and the inner spherical shell inner layer B, the size of the silica gel ball is slightly smaller than the difference of the radiuses of the two spherical shells, and the silica gel ball can freely roll in the inner spherical shell intermediate layer A and the outer spherical shell intermediate layer A and the inner spherical shell inner layer B. The hollow spherical shells coated with the nano friction materials and different in size are characterized in that the nano friction material coatings are respectively positioned on the inner side 5-1 of the outer spherical shell, the outer side 5-2 of the inner spherical shell and the inner side 5-3 of the inner spherical shell.

Each net joint of the external power generation netting is provided with a special spherical hinge 8-1 structure which is connected with the net rope at the net joint in an adhesive way. And the spherical hinge structure is glued with a flexible rope 8-2 with a special structure, and the other end of the flexible rope with the special structure is glued with a spherical nano friction generator. The cable is arranged in the whole structure and used for transmitting electric energy generated by the spherical nano friction generator, the spherical nano friction generator can freely oscillate along with sea waves, wave energy is fully utilized, and the electric energy is collected and converted into electric energy.

Each net joint of the external power generation netting is provided with a closed spherical hinge 8-1 structure which is connected with the net rope at the net joint in an adhesive way. And the spherical hinge structure is glued with a waterproof flexible rope 8-2 which can be internally provided with a cable, and the other end of the flexible rope is glued with a spherical nano friction generator unit. The spherical hinge can drive the flexible rope to flexibly twist in a large angle and is used for enhancing the oscillation effect of the spherical nano friction power generation unit, so that the wave energy is fully utilized and collected and converted into electric energy; the interior of the whole structure is communicated, and a cable is arranged in the whole structure, so that the electric energy generated by the spherical nano friction generator unit can be transmitted to the power generation netting, and the electric energy is collected to supply power for the aquaculture net cage monitoring system.

Under the action of waves, the multi-point spherical nano friction generator attached to the power generation net swings along with the wave oscillation, and the silica gel ball and the coating on the inner wall of the hollow spherical shell which are specially treated inside generate relative friction motion, so that low-frequency irregular wave energy is converted into electric energy. When a plurality of spherical nanometer friction generators of the array work together, stable current is generated to supply power to devices in the aquaculture net cage (such as a monitoring system of the aquaculture net cage), so that the aquaculture net cage devices are self-powered and tend to be automatic.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.