Flexible deep sea truss aquaculture net cage

Abstract

The invention belongs to the technical field of mariculture, and particularly relates to a flexible deep sea truss aquaculture net cage which comprises a flexible net cage system, a stock bin barrel system is arranged in the middle of the flexible net cage system, and an overwater suspension corridor assembly is arranged between the top end of the flexible net cage system and the top end of the stock bin barrel system. An anchor cable system is arranged on the outer side of the circumference of the flexible net cage system. By designing the flexible net cage system, the weight of the culture net cage is increased by filling viscoplastic filling materials through the bottom annular thick supporting pipes and the stand columns, the gravity center of the net cage is reduced, and the safety of the culture net cage in the putting process and the stability in actual operation are improved; other supporting pipes, supporting pieces, stand columns in the stock bin barrel system and transverse annular supporting pipes are filled with seawater, net cage throwing is assisted, and balance weight is simple; due to the integral structural design, the net cage has seawater corrosion resistance, is firm in structure, can bear the impact of large waves and seawater, has certain water permeability and can keep the circulation of seawater.

Description

Technical Field

[0001] The present invention relates to the technical field of marine aquaculture, and in particular to a flexible deep-sea truss aquaculture cage. Background Art

[0002] At present, aquaculture is facing increasingly severe challenges. Due to excessive aquaculture density and overfishing in offshore aquaculture areas, resources are gradually depleted, leading to ecological environmental degradation and declining aquaculture benefits. This situation has prompted deep-sea fishery aquaculture to gradually become an important direction for the development of aquaculture. Deep-sea and deep-sea areas have rich natural resources and broad space, which can effectively alleviate the pressure on offshore resources and provide sustainable aquaculture conditions. As a result, deep-sea and deep-sea fishery aquaculture is becoming an important trend in the aquaculture industry, representing a new frontier for the development of marine fisheries. However, in the vast deep sea environment far away from the land, the aquaculture cages will be in harsh sea conditions, which puts forward stringent requirements on the performance of the aquaculture cages: the materials used in the aquaculture cages need to be resistant to seawater corrosion and be able to ensure long-term normal use without damage in the harsh environment of the deep sea; the structure of the aquaculture cages needs to be able to withstand the impact of waves and ocean currents and maintain normal operation, so its structure needs to be strong and reliable; the aquaculture cages will produce large deformations under the impact of seawater, so the aquaculture cages need to have good deformation ability to ensure that the overall structure will not be damaged under the impact of surges; the aquaculture cages need to have a certain water permeability to ensure the normal circulation of seawater and avoid the formation of dead water areas in the cages, thereby affecting the aquaculture efficiency.

[0003] In the current marine aquaculture field, aquaculture facilities that generally use all-steel structures as the main trusses of the cages are widely used. However, the construction cost and operation and maintenance costs of such cages are high, and the corrosion resistance to seawater is poor, which makes them susceptible to corrosion during long-term use, thereby losing structural performance. At the same time, due to the high structural rigidity of such space cages, high requirements for installation and hoisting equipment, complex construction process, and high difficulty in operation, it has greatly restricted its large-scale promotion and application in the harsh environment of deep sea. Summary of the invention

[0004] Based on the existing technical problems existing in the background technology, the present invention proposes a flexible deep-sea truss aquaculture cage.

[0005] A flexible deep-sea truss aquaculture cage proposed in the present invention comprises a flexible cage system, a silo barrel system is arranged in the middle of the flexible cage system, and an above-water suspended corridor assembly is arranged between the top of the flexible cage system and the top of the silo barrel system, and an anchor cable system is arranged on the outer side of the circumference of the flexible cage system;

[0006] The silo barrel system includes a plurality of columns and a plurality of transverse annular support tubes, and the plurality of columns are fixedly plugged with the plurality of transverse annular support tubes, the plurality of columns are distributed at equal angles with the transverse annular support tube as the center, the plurality of transverse annular support tubes are passed through the plurality of columns and are distributed at equal distances, and the plurality of columns and the plurality of transverse annular support tubes form a frame of the silo barrel system;

[0007] The flexible net cage system comprises a plurality of columns, a plurality of support tubes, a plurality of support members, a plurality of bottom annular thin support tubes and a bottom longitudinal support tube, and the upper and lower ends of the columns are fixedly connected with support tubes, and a support member is fixedly arranged between two adjacent columns, a plurality of the bottom annular thin support tubes and a plurality of bottom longitudinal support tubes are combined into the bottom of the flexible net cage system, a plurality of the support tubes and a plurality of columns are combined into the frame of the flexible net cage system, and a plurality of fixed connection members are fixedly arranged on the columns;

[0008] The anchor cable system includes a plurality of hemp ropes, a plurality of chains, a plurality of trapezoidal building blocks and a plurality of counterweight blocks, wherein one end of the hemp rope is fixedly connected to the column, one end of the chain is fixedly connected to the hemp rope, and the other end of the chain is fixedly connected to the trapezoidal building block, and a plurality of the counterweight blocks are fixedly connected to the chain and are equidistantly distributed along the length thereof;

[0009] The above-water suspended corridor assembly comprises a surrounding corridor and six branch corridors, wherein the surrounding corridor is located at the top of the flexible cage system, and the bottom end of the surrounding corridor is fixedly connected to the tops of a plurality of columns, and the two ends of the branch corridor are respectively fixedly connected to the surrounding corridor and the transverse annular support pipe at the top of the silo barrel system, and the six branch corridors are distributed at equal angles around the silo barrel system, and the surrounding corridor and the branch corridor are both formed by a plurality of main poles and a plurality of cross bars fixedly connected, and the plurality of cross bars are distributed between the plurality of main poles at equal distances.

[0010] Preferably, the support tube comprises a top annular thick support tube and a bottom annular thick support tube, the bottom annular thick support tube is located at the outer ring of the bottom annular thin support tube, and the top annular thick support tube is located at the bottom end of the surrounding corridor.

[0011] Preferably, a plurality of bottom longitudinal support tubes with equal angles are fixedly installed between the bottom thick annular support tube and the transverse annular support tube located at the bottom end of the silo barrel system, and a plurality of bottom thin annular support tubes are fixedly installed between the plurality of bottom longitudinal support tubes.

[0012] Preferably, the support members include oblique support members, transverse support members and net support members, the transverse support members are fixedly connected to the columns, the net support members are located on both sides of the transverse support members, and the net support members are fixedly connected to the fixed connecting members arranged on the columns, the inner layer of the net support members is laid on the inner side of the flexible net box system and between the top of the bottom annular thin support tube and the inner side of the bottom annular thick support tube and the outer side of the transverse annular support tube, the outer layer of the net support members is laid on the outer side of the flexible net box system and its bottom end, and a casing system is arranged between several of the oblique support members and the transverse support members.

[0013] Preferably, the bottom annular thick support tube and the columns are filled with viscoplastic filling material, and the oblique support tubes, transverse support tubes, bottom annular thin support rods, bottom longitudinal support tubes, and the columns and transverse annular support tubes of the silo barrel system are filled with seawater.

[0014] Preferably, the sleeve system includes a plurality of flexible sleeves, a transverse sleeve, a plurality of oblique sleeves and a sleeve connecting component, and the plurality of flexible sleeves are located at the four corners of the transverse sleeve, the transverse sleeve is fixedly sleeved with the transverse support member, the oblique sleeve is fixedly installed at the connection between the column and the support pipe, the two ends of the oblique support member are respectively sleeved with the flexible sleeve and the oblique sleeve, and sleeve connecting components are fixedly installed on the outside of the plurality of flexible sleeves and the transverse sleeve.

[0015] Preferably, the columns, transverse annular support tubes, columns, support tubes, water suspended corridor components, fixed connection members, oblique support members, transverse support members, bottom annular thin support tubes, flexible sleeves, transverse sleeves, oblique sleeves, sleeve connecting members and bottom longitudinal support tubes are all made of HDPE.

[0016] Preferably, the hemp rope is made of high-strength polypropylene monofilament cable, and the net support body is made of special polyester monofilament and polyethylene twisted net.

[0017] Preferably, the flexible sleeve includes an oblique sleeve, a block, a spherical sleeve, a spherical block and a flexible filling material, the spherical sleeve is located at the four corners of the transverse sleeve and is fixedly connected to the transverse sleeve, and one end of the oblique sleeve is fixedly connected to the spherical block, one end of the oblique support member is located inside the oblique sleeve, the block is fixedly installed with one end of the oblique support member, the block is located inside the oblique sleeve, the flexible filling material is filled inside the oblique sleeve, and the flexible filling material is filled between the block and the oblique sleeve and between the spherical block and the oblique sleeve.

[0018] The beneficial effects of the present invention are:

[0019] 1. A flexible deep-sea truss aquaculture cage proposed in the present invention designs a flexible cage system, wherein a frame of the aquaculture cage is formed by support pipes, support members, bottom annular thin support pipes, bottom longitudinal support pipes and columns provided with fixed connecting members, wherein a viscoplastic filling material is poured through the bottom annular thick support pipe and the columns to increase the weight of the aquaculture cage, lower the center of gravity of the cage, improve the safety of the aquaculture cage during the release process and the stability in actual operation, and prevent the aquaculture cage from being overturned by the impact of waves and ocean currents, and the viscoplastic filling material has a certain hardness and rigidity, and at the same time has a certain flexibility and ductility, and can be deformed to a certain extent to protect the overall structure of the cage from being destroyed, and the remaining support pipes, support members, columns in the silo barrel system and the transverse annular support pipe are poured with seawater to assist the cage release and the counterweight is simple; in addition, the overall structural design makes the cage resistant to seawater corrosion, firm in structure, able to withstand the impact of large waves and seawater, and has a certain water permeability, can maintain the fluidity of seawater, avoid water pollution in the cage, and can effectively prevent farmed animals from escaping to the wild environment.

[0020] 2. A flexible deep-sea truss aquaculture cage proposed in the present invention has a designed HDPE truss system. By adopting the HDPE truss, compared with the traditional steel truss structure, the cage has good corrosion resistance and moisture resistance, and has high tensile strength, can withstand large tension and pressure, and can better adapt to the harsh environment in the ocean. In addition, the high-density polyethylene material is relatively light, which can reduce the weight of the cage and reduce the difficulty of installation. A casing system is designed to effectively protect the truss joints, enhance the safety of key nodes, and reduce the risk of damage to weak links. Then, the design of the flexible casing at the node improves the flexibility and stability of the cage, and has a certain bending and deformation ability when the cage is faced with the impact of waves and ocean currents, which can effectively improve the overall structural stability of the cage and reduce the risk of cage damage and fish escape. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a flexible deep-sea truss aquaculture cage according to the present invention;

[0022] Figure 2 It is a three-dimensional structural schematic diagram of a flexible cage system of a flexible deep-sea truss aquaculture cage according to the present invention;

[0023] Figure 3 It is an enlarged structural schematic diagram of a casing system of a flexible deep-sea truss aquaculture cage according to the present invention;

[0024] Figure 4 It is a structural schematic diagram of a flexible casing of a flexible deep-sea truss aquaculture cage according to the present invention;

[0025] Figure 5This is a schematic diagram of the structure inside a casing connection component of a flexible deep-sea truss aquaculture cage according to the present invention;

[0026] Figure 6 This is a schematic structural diagram of an above-water suspended corridor assembly of a flexible deep-sea truss aquaculture cage according to the present invention;

[0027] Figure 7 This is a schematic diagram of an external grid model of a flexible deep-sea truss aquaculture cage of the present invention;

[0028] Figure 8 It is a partial grid schematic diagram of a cage watershed section of a flexible deep-sea truss aquaculture cage of the present invention;

[0029] Fig. 9 This is a schematic diagram of the structural deflection of a flexible deep-sea truss aquaculture cage under the most unfavorable working conditions of the present invention.

[0030] In the figure: 1 silo barrel system, 11 upright column, 12 horizontal annular support pipe;

[0031] 2 flexible cage system, 21 upright column, 22 support pipe, 221 top annular thick support pipe, 222 bottom annular thick support pipe, 23 support member, 231 oblique support member, 232 transverse support member, 233 net support member, 24 bottom annular thin support pipe, 25 water suspended corridor assembly, 251 surrounding corridor, 252 branch corridor, 253 main pole, 254 cross bar, 26 bottom longitudinal support pipe;

[0032] 3 anchor cable system, 31 hemp rope, 32 chain, 33 trapezoidal building blocks, 34 counterweight blocks;

[0033] 4. Fix the connecting components;

[0034] 5 casing system, 51 flexible casing, 511 oblique casing, 512 block, 513 spherical casing, 514 spherical block, 515 flexible filling material, 52 transverse casing, 53 oblique casing, 54 casing connecting component. DETAILED DESCRIPTION

[0035] Reference Figure 1-6A flexible deep-sea truss aquaculture cage, comprising a flexible cage system 2, a silo barrel system 1 is arranged in the middle of the flexible cage system 2, and an above-water suspended corridor assembly 25 is arranged between the top of the flexible cage system 2 and the top of the silo barrel system 1, an anchor cable system 3 is arranged on the outer side of the circumference of the flexible cage system 2, the flexible cage system 2 is mainly used to carry the cultured organisms, the anchor cable system 3 is mainly used to fix the cage, the casing system 5 is mainly used to protect the connection between the column 21 and the support 23 to improve the safety of the key nodes and the overall stability of the cage, the connection of the anchor cable system 3 is generally controlled by a ship crane to penetrate and fix it on the seabed, so that the entire cage is fixed at a specified position, and the anti-disturbance ability of the cage during use can be improved;

[0036] The silo barrel system 1 includes a plurality of columns 11 and a plurality of transverse annular support tubes 12, and the plurality of columns 11 are fixedly plugged with the plurality of transverse annular support tubes 12, the plurality of columns 11 are distributed at equal angles with the transverse annular support tube 12 as the center, the plurality of transverse annular support tubes 12 are penetrated on the plurality of columns 11 and distributed at equal distances, and the plurality of columns 11 and the plurality of transverse annular support tubes 12 form a frame of the silo barrel system 1;

[0037] The flexible cage system 2 includes a plurality of columns 21, a plurality of support tubes 22, a plurality of support members 23, a plurality of bottom annular thin support tubes 24 and a bottom longitudinal support tube 26, and the upper and lower ends of the columns 21 are fixedly connected with the support tubes 22, and a support member 23 is fixedly arranged between two adjacent columns 21, a plurality of bottom annular thin support tubes 24 and a plurality of bottom longitudinal support tubes 26 are combined into the bottom of the flexible cage system 2, a plurality of support tubes 22 and a plurality of columns 21 are combined into the frame of the flexible cage system 2, a plurality of fixed connection members 4 are fixedly arranged on the columns 21, the silo barrel system 1 is connected to the flexible cage system 2 through the bottom longitudinal support tube 26 and the branch corridor 252, and the internal structure of the silo barrel system 1 can be modified according to different operation requirements and working conditions;

[0038] The anchor cable system 3 includes a plurality of hemp ropes 31, a plurality of chains 32, a plurality of trapezoidal blocks 33 and a plurality of counterweights 34, wherein one end of the hemp rope 31 is fixedly connected to the column 21, one end of the chain 32 is fixedly connected to the hemp rope 31, the other end of the chain 32 is fixedly connected to the trapezoidal block 33, a plurality of counterweights 34 are fixedly connected to the chain 32 and are evenly distributed along the length thereof, a fishing boat is used to pull the trapezoidal block 33 away, so that the hemp rope 31 and the chain 32 are as tight as possible, and then they are allowed to sink naturally, and the trapezoidal block 33 penetrates downward and is fixed to the sea. The trapezoidal blocks 33 provide tensile and lateral resistance through close contact and anchoring with the seabed, inhibit the displacement of the cage, and resist the disturbance of the cage position by external hydrodynamic force by enhancing the bonding force and friction between the trapezoidal blocks 33 and the seabed, so as to ensure that the cage is fixed at the designated position; under static water conditions, the counterweight block 34 in the anchor cable system 3 increases the total weight and sinking force of the cage, offsets part of the buoyancy of the cage, inhibits the influence of external force on the cage, and ensures that the cage is stable at the designated position without drifting or tilting;

[0039] The water suspended corridor assembly 25 includes a surrounding corridor 251 and six branch corridors 252. The surrounding corridor 251 is located at the top of the flexible cage system 2, and the bottom end of the surrounding corridor 251 is fixedly connected to the tops of several columns 21. The two ends of the branch corridors 252 are respectively fixedly connected to the surrounding corridor 251 and the transverse annular support pipe 12 at the top of the silo barrel system 1. The six branch corridors 252 are distributed at equal angles around the silo barrel system 1, and the surrounding corridor 251 and the branch corridors 252 are both fixedly connected by several main poles 253 and several cross bars 254. The several cross bars 254 are equidistantly distributed between the several main poles 253. During cleaning or daily maintenance, the current cage can be cleaned and maintained along the water suspended corridor assembly 25.

[0040] In the present invention, a plurality of bottom longitudinal support tubes 26 with equal angles are fixedly installed between the bottom annular thick support tube 222 and the transverse annular support tube 12 located at the bottom end of the silo barrel system 1, and a plurality of bottom annular thin support tubes 24 are fixedly installed between the plurality of bottom longitudinal support tubes 26;

[0041] A plurality of bottom longitudinal support tubes 26 with equal angles are fixedly installed between the inner side of the circumference of the bottom annular thick support tube 222 and the transverse annular support tube 12 located at the bottom end of the silo barrel system 1, and a plurality of bottom annular thin support tubes 24 are fixedly installed between the plurality of bottom longitudinal support tubes 26;

[0042] The support members 23 include oblique support members 231, transverse support members 232 and net support members 233. The oblique support members 231 and transverse support members 232 are arranged on the side of the cage to reinforce the overall structure and assist in resisting the impact of external forces such as waves and ocean currents, thereby ensuring the stability of the cage structure. The net support members 233 surround and wrap the frame of the flexible cage system 2. The net support members 233 have strong water permeability, which helps to prevent water pollution and provide good growth conditions for the breeding environment, while effectively preventing the escape of farmed animals. The transverse support members 232 are fixedly connected to the columns 21, and the net support members 233 are located on both sides of the transverse support members 232. The net support members 233 are fixedly connected to the fixed connection members 4 arranged on the columns 21, and the inner layer of the net support members 233 is laid on the inner side and bottom of the flexible cage system 2. The outer layer of the net support member 233 is laid on the outside and the bottom of the flexible cage system 2 between the top of the annular thin support tube 24 and the inner side of the bottom annular thick support tube 222 and the outer side of the transverse annular support tube 12. The net support member 233 is attached to the inner and outer sides of the cage body. There is no net support member 233 on the top surface of the cage. When the cage is operating normally, the water does not completely cover the cage. The water suspended corridor assembly 25 and the top annular thick support tube 221 are above the water surface. This part can prevent the farmed fish from jumping out. Therefore, there is no net support member 233 wrapped on the top surface, and only the side and bottom surfaces of the cage are wrapped with the net support member 233. A casing system 5 is arranged between one end of the plurality of inclined support members 231 and the transverse support member 232, and a casing system 5 is also arranged at the other end of the inclined support member 231 and the connection between the column 21 and the support tube 22;

[0043] The bottom annular thick support pipe 222 and the column 21 are perfused with viscoplastic filling material, and the oblique support pipe 231, the transverse support pipe 232, the bottom annular thin support rod 24, the bottom longitudinal support pipe 26, and the column 11 and the transverse annular support pipe 12 of the silo barrel system 1 are perfused with seawater;

[0044] The casing system 5 includes a plurality of flexible casings 51, a transverse casing 52, a plurality of oblique casings 53 and a casing connecting member 54. The design of the flexible casing 51 enhances the flexibility of the structure, so that the cage can bend accordingly under the impact of waves and currents, rather than maintaining rigidity, thereby improving the overall flexibility of the cage, and the plurality of flexible casings 51 are located at the four corners of the transverse casing 52, the transverse casing 52 is fixedly sleeved with the transverse support member 232, the oblique casing 53 is fixedly installed at the connection between the column 21 and the support pipe 22, the two ends of the oblique support member 231 are respectively sleeved with the flexible casing 51 and the oblique casing 53, the plurality of flexible casings 51 and the transverse casing 52 are fixedly installed with casing connecting members 54, and the casing connecting members 5 4 The lattice design can reduce the weight of the components while ensuring the structural stability. When the column 21 is vertically displaced due to the impact of waves during the normal operation of the cage, the oblique support member 231 will follow the column 21 to undergo corresponding displacement changes because the oblique support member 231 is fixedly connected to the column 21. At this time, the flexible filling material 515 in the flexible sleeve 51 will provide a certain thrust and pull force to give the oblique support member 231 a certain buffer, thereby ensuring the normal operation of the cage; the spherical block 514 can provide a certain angle of rotation for the oblique support member 231, further enhancing the overall flexibility of the cage and reducing the risk of damage caused by external forces during use;

[0045] The columns 11, the transverse annular support tube 12, the columns 21, the support tube 22, the floating corridor assembly 25, the fixed connection member 4, the oblique support member 231, the transverse support member 232, the bottom annular thin support tube 24, the flexible sleeve 51, the transverse sleeve 52, the oblique sleeve 53, the sleeve connection member 54 and the bottom longitudinal support tube 26 are all made of HDPE. HDPE has excellent corrosion resistance and leakage resistance, and has high tensile strength. It not only has good economy, but also has the characteristics of stable and reliable interfaces. As an electrical insulator, HDPE can resist the corrosion of acids, alkalis and salts, and will not rust or become electrically Chemical corrosion phenomenon; HDPE components have good sealing and low permeability, which can ensure the durability of the cage; HDPE is flexible, that is, it can bend with the action of waves instead of maintaining rigidity, and has strong tensile strength and excellent flexibility. The truss structure can give full play to the tensile and compressive properties of HDPE pipes and improve the bearing capacity of the structure; the truss system can make the structure have a larger span, and the material of the HDPE pipe truss is relatively light, which can reduce the deadweight of the structure, which is conducive to the normal use of the cage, and is easy to carry and install, with low requirements for manpower and equipment. It can also withstand a certain degree of bending during installation, reducing the difficulty of installation;

[0046] The hemp rope 31 is made of high-strength polypropylene monofilament cable, and the net support 233 is made of special polyester monofilament and polyethylene twisted net;

[0047] The flexible sleeve 51 includes an oblique sleeve 511, a block 512, a spherical sleeve 513, a spherical block 514 and a flexible filling material 515. The spherical sleeve 513 is located at the four corners of the transverse sleeve 52 and is fixedly connected to the transverse sleeve 52, and one end of the oblique sleeve 511 is fixedly connected to the spherical block 514. One end of the oblique support 231 is located inside the oblique sleeve 511, and the block 512 is fixedly installed with one end of the oblique support 231. The block 512 is located inside the oblique sleeve 511, and the flexible filling material 515 is filled. The flexible filling material 515 is filled inside the oblique sleeve 511, and between the block 512 and the oblique sleeve 511 and between the spherical block 514 and the oblique sleeve 511. The flexible filling material 515 can alleviate the displacement of the oblique support member 231 under the impact of waves, increase the flexibility and bending deformation ability of the structure, remove part of the impact force of the waves, and improve the safety of the node. The design of the flexible filling material 515 can effectively reduce the rigidity of the flexible deep-sea flexible cage system 2 and reduce the possibility of damage to the overall structure of the cage.

[0048] Working principle: A flexible cage system is designed, and the frame of the aquaculture cage is formed by a support tube 22, a support member 23, a bottom annular thin support tube 24, a bottom longitudinal support tube 26 and a column 21 with a fixed connection member 4. Viscoplastic filling material is poured through the bottom annular thick support tube 222 and the column 21 to increase the weight of the aquaculture cage, lower the center of gravity of the cage, improve the safety of the aquaculture cage during the release process and the stability in actual operation, and prevent the aquaculture cage from being overturned by the impact of waves and ocean currents. The viscoplastic filling material has a certain hardness and rigidity, and at the same time At the same time, it has a certain flexibility and ductility, and can be deformed to a certain extent to protect the overall structure of the cage from being damaged. The remaining support pipes 22, support members 23, columns 11 in the silo barrel system 1, and transverse annular support pipes 12 are filled with seawater to assist in the placement of the cage and the counterweight is simple. In addition, the overall structural design makes the cage resistant to seawater corrosion, with a strong structure, able to withstand the impact of large waves and seawater, and has a certain water permeability, which can maintain the fluidity of seawater, avoid water pollution in the cage, and effectively prevent farmed animals from escaping to the wild environment;

[0049] By designing a HDPE truss system, the HDPE truss has good corrosion resistance and moisture resistance compared to the traditional steel truss structure, and has high tensile strength, can withstand large tension and pressure, can better adapt to the harsh environment in the ocean, and the high-density polyethylene material is relatively light, which can reduce the weight of the cage and reduce the difficulty of installation; a casing system is designed to effectively protect the truss connection, enhance the safety of key nodes, and reduce the risk of damage to weak links. Then, the design of the flexible casing 51 at the node improves the flexibility and stability of the cage, and has a certain bending and deformation ability when the cage is faced with the impact of waves and ocean currents, which can effectively improve the overall structural stability of the cage and reduce the risk of cage damage and fish escape.

[0050] Reference Figure 7-Figure 9 A flexible deep-sea truss aquaculture cage. In order to further analyze the reliability of the flexible deep-sea truss aquaculture cage, the fluid-solid coupling numerical modeling and analysis of the flexible deep-sea truss aquaculture cage are now carried out. By establishing a finite element model of the cage, the deformation and stress of the cage in actual work are simulated according to the seawater flow rate of the actual water conditions of the cage entering the water, including the following steps:

[0051] Step 1: Based on the above cage structure layout, the cage perimeter is planned to be 197.82m, the underwater height is about 10m, and the total water capacity is 30960m 3 , referring to the provisions of "Polyethylene (PE) Pipe System for Water Supply" (GB / T13663.2-2018), the selected round pipe sizes are shown in the following table.

[0052] Table 1 Main structure dimensions of cage

[0053]

[0054] Step 2: Use finite element software to establish the geometric model of the flexible deep-sea truss aquaculture cage, such as Figure 7 As shown, it includes a silo barrel system 1, a flexible net cage system 2 and an anchor cable system 3. After completion, the geometric model is meshed, and the temporary support of the onshore assembly condition is simulated by giving corresponding constraints. Finally, an inertial force in the same direction as the structural gravity acceleration is applied to the model to simulate the dead weight of the structure. The maximum stress of the structure occurs at the intersection of the upper layer of the silo barrel platform, the walkway and the silo barrel platform column. The maximum stress is 14.58MPa, which is lower than the design value of the tensile strength of the material used, 22MPa. The maximum deflection of the structure occurs in the middle of the walkway, with a value of 705.87mm and a deflection-span ratio of 0.025.

[0055] Step 3: The seawater velocity range of the actual working water area of ​​the cage is 2.0m / s~2.3m / s. In order to simulate the deformation and stress of the cage in actual operation, the cage watershed is solved using fluid simulation software, such as Figure 8-9 As shown in the figure, a watershed with a height, length and width of 14.6m*154.9m*154.9m is obtained through Boolean operation, and the watershed is meshed, and the boundary conditions of the watershed are set. The positive surface of the watershed on the x-axis is the velocity inlet, the negative direction of the x-axis is the pressure outlet, and the remaining surfaces of the watershed are walls. In order to simulate the most unfavorable working conditions of the cage in actual operation, a water flow velocity of 3m / s is used to analyze the deformation and structural stress of the cage under the most unfavorable working conditions. Under the flow velocity of 3m / s, the force on the cable is 87.266KN, which is less than the breaking strength of the cable of 1185KN. The maximum deformation of the main structure of the cage is 2.98m, which occurs at the main pole position of the crosswalk. The maximum deflection of the crosswalk is 2.98m, and the deflection-span ratio is 0.1049. The maximum stress of the remaining parts is lower than the material strength limit.

[0056] Through the simulation analysis of the above-mentioned flexible deep-sea truss aquaculture cage using finite element software, it can be seen that the stress on each structure of the cage under different working conditions is less than the tensile strength limit of the material, and there is sufficient safety margin, which further verifies the reliability of the cage.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flexible deep-sea truss aquaculture cage, comprising a flexible cage system (2), characterized in that: A silo barrel system (1) is arranged in the middle of the flexible net cage system (2), and an above-water suspended corridor assembly (25) is arranged between the top of the flexible net cage system (2) and the top of the silo barrel system (1), and an anchor cable system (3) is arranged on the outer side of the circumference of the flexible net cage system (2); The silo barrel system (1) comprises a plurality of columns (11) and a plurality of transverse annular support tubes (12), wherein the plurality of columns (11) are fixedly plugged with the plurality of transverse annular support tubes (12), the plurality of columns (11) are distributed at equal angles with the transverse annular support tube (12) as the center of the circle, the plurality of transverse annular support tubes (12) are passed through the plurality of columns (11) and are distributed at equal distances, and the plurality of columns (11) and the plurality of transverse annular support tubes (12) form a frame of the silo barrel system (1); The flexible cage system (2) comprises a plurality of columns (21), a plurality of support tubes (22), a plurality of support members (23), a plurality of bottom annular thin support tubes (24) and a bottom longitudinal support tube (26), wherein the upper end and the lower end of each column (21) are fixedly connected to the support tube (22), a support member (23) is fixedly arranged between two adjacent columns (21), the plurality of bottom annular thin support tubes (24) and the plurality of bottom longitudinal support tubes (26) are combined to form the bottom of the flexible cage system (2), and the plurality of support tubes (22) and the plurality of columns (21) are combined to form A frame of a flexible cage system (2), wherein the column (21) is fixedly provided with a plurality of fixed connection components (4); the anchor cable system (3) comprises a plurality of hemp ropes (31), a plurality of chains (32), a plurality of trapezoidal building blocks (33) and a plurality of counterweight blocks (34); one end of the hemp rope (31) is fixedly connected to the column (21), one end of the chain (32) is fixedly connected to the hemp rope (31), the other end of the chain (32) is fixedly connected to the trapezoidal building block (33), and a plurality of the counterweight blocks (34) are fixedly connected to the chain (32) and are evenly distributed along the length thereof; The above-water suspended corridor assembly (25) comprises a surrounding corridor (251) and a plurality of branch corridors (252); the surrounding corridor (251) is located at the top of the flexible cage system (2), and the bottom end of the surrounding corridor (251) is fixedly connected to the tops of a plurality of upright columns (21); the two ends of the branch corridor (252) are respectively fixedly connected to the surrounding corridor (251) and the transverse annular support pipe (12) at the top of the silo barrel system (1); the plurality of branch corridors (252) are distributed at equal angles around the silo barrel system (1), and the surrounding corridor (251) and the branch corridor (252) are both formed by a plurality of main rods (253) and a plurality of cross rods (254) that are fixedly connected; and the plurality of cross rods (254) are distributed between the plurality of main rods (253) at equal distances.

2. A flexible deep-sea truss aquaculture cage according to claim 1, characterized in that: The support tube (22) comprises a top annular thick support tube (221) and a bottom annular thick support tube (222), wherein the bottom annular thick support tube (222) is located at the outer ring of the bottom annular thin support tube (24), and the top annular thick support tube (221) is located at the bottom end of the surrounding corridor (251), and the multiple branch corridors (252) are preferably six branch corridors (252).

3. A flexible deep-sea truss aquaculture cage according to claim 2, characterized in that: A plurality of bottom longitudinal support tubes (26) with equal angles are fixedly installed between the bottom annular thick support tube (222) and the transverse annular support tube (12) located at the bottom end of the silo barrel system (1), and a plurality of bottom annular thin support tubes (24) are fixedly installed between the plurality of bottom longitudinal support tubes (26).

4. A flexible deep-sea truss aquaculture cage according to claim 3, characterized in that: The support member (23) comprises an oblique support member (231), a transverse support member (232) and a net support member (233); the transverse support member (232) is fixedly connected to the column (21); the net support member (233) is located on both sides of the transverse support member (232); and the net support member (233) is fixedly connected to a fixed connection component (4) provided on the column (21); the inner layer of the net support member (233) is laid on the inner side of the flexible net cage system (2) and between the top of the bottom annular thin support tube (24) and the inner side of the bottom annular thick support tube (222) and the outer side of the transverse annular support tube (12); the outer layer of the net support member (233) is laid on the outer side of the flexible net cage system (2) and its bottom end; and a sleeve system (5) is provided between a plurality of the oblique support members (231) and the transverse support members (232).

5. A flexible deep-sea truss aquaculture cage according to claim 4, characterized in that: The bottom annular thick support tube (222) and the column (21) are filled with viscoplastic filling material, and the oblique support tube (231), the transverse support tube (232), the bottom annular thin support rod (24), the bottom longitudinal support tube (26), and the column (11) and the transverse annular support tube (12) of the silo barrel system (1) are filled with seawater.

6. A flexible deep-sea truss aquaculture cage according to claim 4, characterized in that: The sleeve system (5) comprises a plurality of flexible sleeves (51), a transverse sleeve (52), a plurality of oblique sleeves (53) and a sleeve connecting member (54), wherein the plurality of flexible sleeves (51) are located at the four corners of the transverse sleeve (52), the transverse sleeve (52) is fixedly sleeved with the transverse support member (232), the oblique sleeve (53) is fixedly installed at the connection between the column (21) and the support pipe (22), the two ends of the oblique support member (231) are respectively sleeved with the flexible sleeve (51) and the oblique sleeve (53), and the sleeve connecting member (54) is fixedly installed on the outer sides of the plurality of flexible sleeves (51) and the transverse sleeve (52).

7. A flexible deep-sea truss aquaculture cage according to claim 6, characterized in that: The upright column (11), the transverse annular support tube (12), the upright column (21), the support tube (22), the floating corridor assembly (25), the fixed connection member (4), the oblique support member (231), the transverse support member (232), the bottom annular thin support tube (24), the flexible sleeve (51), the transverse sleeve (52), the oblique sleeve (53), the sleeve connection member (54) and the bottom longitudinal support tube (26) are all made of HDPE.

8. The flexible deep-sea truss aquaculture cage according to claim 4, characterized in that: The hemp rope (31) is made of high-strength polypropylene monofilament cable, and the net support (233) is made of special polyester monofilament and polyethylene twisted net.

9. The flexible deep-sea truss aquaculture cage according to claim 6, characterized in that: The flexible sleeve (51) comprises an oblique sleeve (511), a block (512), a spherical sleeve (513), a spherical block (514) and a flexible filling material (515); the spherical sleeve (513) is located at the four corners of the transverse sleeve (52) and is fixedly connected to the transverse sleeve (52); one end of the oblique sleeve (511) is fixedly connected to the spherical block (514); one end of the oblique support member (231) is located Inside the oblique sleeve (511), the clamping block (512) is fixedly installed with one end of the oblique support member (231); the clamping block (512) is located inside the oblique sleeve (511); the flexible filling material (515) is filled inside the oblique sleeve (511); and the flexible filling material (515) is filled between the clamping block (512) and the oblique sleeve (511) and between the spherical clamping block (514) and the oblique sleeve (511).

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