Modularized deep sea aquaculture net cage

Abstract

The invention relates to the technical field of aquaculture, in particular to a modular deep sea aquaculture net cage which sequentially comprises a top limiting platform, a middle truss and a modular bottom bearing frame from top to bottom. The modularized bottom bearing frame comprises a plurality of frame modules which are connected through bolts and welded to form a shape like a Chinese character'tian '. A long-strip-shaped transverse air bag is arranged in the frame module, the total buoyancy of the transverse air bag is 1.2 times larger than the dead weight of the modularized deep-sea aquaculture net cage, and the transverse air bag is used for enabling the draft depth of the modularized deep-sea aquaculture net cage to be smaller than or equal to 1.2 m. The net cage has the advantages that the transversely-arranged air bags are horizontally installed, so that the net cage can emerge from the water surface when the immersion depth is small. Therefore, great convenience is brought to installation.

Description

Technical Field

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

[0002] Deep-sea fish farming is an important part of the maritime granary. Through a large number of experiments, we found that near-shallow sea farming is very risky during typhoons. The actual water depth of the HDPE suspended cage imported from abroad is between 6 and 7 meters. Because the net has no support frame, the net is cone-shaped underwater, and the net is propped open by hanging sinkers. When the ocean tide speeds up, the net will deform, and the activity space will be squeezed and deformed smaller. The fish farmed in the net will squeeze each other, especially during typhoons. The waves are large and the surface flow rate is greater, which will cause the net to be severely deformed. The attachments on the net will scratch the fish, causing mutual squeezing and friction injuries. Because of high-density farming, there are more bacteria in the water body, and the water temperature is very high, which is easy to be infected and lead to large-scale death. In this case, the fish are passively injured. There is nowhere to hide because the space is compressed. Through experimental data and observation of the living habits of fish. Fish can naturally avoid collisions. At the same time, the fish themselves are not affected by the waves, and the waves only affect a certain depth of the sea surface. It will not cause harm and threat to the fish. Waves and typhoons will only damage the farming equipment. During a typhoon, the waves will increase the drag force on the cage. If the cage is weak, it will be deformed or even destroyed. The net is the part that is subject to greater force. The tide pushes and pulls the net, which is fixed to the cage structure by cables. The tension is transmitted to the main structure of the cage. Therefore, in the construction and design of the main structure of the cage, as long as the destructive force of the typhoon and the force of the tide are fully considered and sufficient margin is left in the design, the safety of the cage is guaranteed.

[0003] Spatial structure is a very mature building structure, which is widely used in the construction of large stations. The maximum span can exceed 400 meters. And the manufacturing technology has national standards and industry standards.

[0004] The net is woven with polymer materials and has good stress resistance. The measured data proves that the tension caused by the water flow rate will not damage the net. The net transfers the force to the truss. As long as the strength of the main structure is guaranteed, the safety of the aquaculture cage is guaranteed. The net is mainly bitten off by marine organisms in the ocean, or worn off by sharp shellfish, so preventing friction is more important.

[0005] The main body of the aquaculture cage is to support the hanging of the net and provide a stable space for the farmed fish. The net is fixed to the truss frame by cables, and the space is stable after the net is fixed. In this way, during typhoon waves, the fish can move freely without casualties. In reality, when the waves are big, it is calm 8 meters underwater, which has no impact on the safety of aquaculture.

[0006] The impact of waves will be about six meters. There will be no fish in this water depth range, and the fish will automatically enter the stable water layer. Therefore, the water depth for aquaculture should be below 6 meters to within 20 meters. There is no danger in these areas. The overall height of our cage can be 15 meters to 20 meters according to the water depth. The cage is suspended in the water and can float in the waves, which is conducive to absorbing the drag force of wind and waves.

[0007] In order to manufacture high-strength and cost-effective modular deep-sea aquaculture cages, existing modular deep-sea aquaculture cages have the following problems: First, the floating problem during transportation from the construction base to the aquaculture base after the cages are built. Second, the suspension scheme during normal operation of the cages during the fish farming process. Third, the swing control problem of the suspension system in waves. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a modular deep-sea aquaculture cage to solve the problems of poor wave resistance, deformation of the net, high installation cost, etc. of traditional cages.

[0009] In order to solve the above technical problems, the technical solution adopted by the present invention is: to provide a modular deep-sea aquaculture cage, which comprises, from top to bottom, a top limiting platform, an intermediate truss and a modular bottom load-bearing frame; The modular bottom load-bearing frame includes a plurality of frame modules connected by bolts and welded to form a field shape; a long horizontal air bag is arranged in the frame module, and the total buoyancy of the horizontal air bag is greater than 1.2 times the dead weight of the modular deep-sea aquaculture cage, so as to make the draft depth of the modular deep-sea aquaculture cage ≤1.2 meters.

[0010] Furthermore, in the above-mentioned modular deep-sea aquaculture cage, the interior of the modular deep-sea aquaculture cage is divided into four independent aquaculture zones by a cross-shaped detachable partition.

[0011] Furthermore, in the above-mentioned modular deep-sea aquaculture cage, the cross-shaped detachable partition adopts a high-strength polyethylene mesh, and the net of each partition is independently installed and fixed by quick buckles.

[0012] Furthermore, the above-mentioned modular deep-sea aquaculture cage also includes a side vertically suspended air bag, and the side vertically suspended air bag is suspended between the top limiting platform and the modular bottom load-bearing frame.

[0013] Furthermore, in the above-mentioned modular deep-sea aquaculture cage, the top limiting platform includes a steel grid limiting frame, and the side vertically suspended airbags are suspended inside the steel grid limiting frame in a one-to-one correspondence through steel cables.

[0014] Furthermore, in the above-mentioned modular deep-sea aquaculture cage, the steel cable is connected to the steel grid limiting frame through a spring.

[0015] Furthermore, in the above-mentioned modular deep-sea aquaculture cage, the surface of the steel grid limiting frame is coated with a polyurethane wear-resistant layer, the thickness of the polyurethane wear-resistant layer is ≥5 mm, and the surface of the polyurethane wear-resistant layer is provided with anti-slip textures.

[0016] Furthermore, in the above-mentioned modular deep-sea aquaculture cage, the intermediate truss is composed of a grid assembled from bolt balls and steel pipes, and the bolt balls are treated with hot-dip galvanizing for corrosion protection.

[0017] Furthermore, in the above-mentioned modular deep-sea aquaculture cage, the diameter of the steel pipe is 80 mm.

[0018] Furthermore, in the above-mentioned modular deep-sea aquaculture cage, the frame module is 10.5 meters long, 2 meters wide, and 1.6 meters high, and the transverse airbag is 10 meters long and 1.6 meters in diameter.

[0019] The beneficial effect of the present invention is that in the modular deep-sea aquaculture cage of the present invention, the transverse airbag is installed horizontally, so that the draft depth is shallow and the cage can float on the water surface. This greatly facilitates installation, and the cage can be assembled in an area with a water depth of more than 2 meters at high tide. When the tide exceeds 1.2 meters, the cage floats on the water surface, and our sea areas basically have a tidal range of more than 2 meters. We can easily choose a good installation location, which greatly reduces the restrictions on the site. The cost of the site will also be greatly reduced. The weight of the polymer airbag is much smaller than that of the steel structure (steel cylinder), and no deep-water dock is required for transportation and installation, and the site cost is reduced by 60%. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a modular bottom load-bearing frame of a modular deep-sea aquaculture cage according to a specific embodiment of the present invention; Figure 2 It is a partial structural schematic diagram of a side vertically suspended air bag of a modular deep-sea aquaculture cage according to a specific embodiment of the present invention; Figure 3 It is a schematic structural diagram of a transverse air bag of a modular deep-sea aquaculture cage according to a specific embodiment of the present invention; Description of labels: 1. Modular bottom load-bearing frame; 2. Horizontal airbag; 3. Top limit platform; 31. Steel grid limit frame; 4. Side vertical suspension airbag. DETAILED DESCRIPTION

[0021] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0022] Please refer to Figure 1 , Figure 2 and Figure 3 , the present invention provides a modular deep-sea aquaculture cage, which comprises, from top to bottom, a top limiting platform 3, an intermediate truss and a modular bottom load-bearing frame 1; The modular bottom load-bearing frame 1 includes a plurality of frame modules connected by bolts and welded to form a field shape; a long horizontal air bag 2 is arranged in the frame module, and the total buoyancy of the horizontal air bag 2 is greater than 1.2 times the dead weight of the modular deep-sea aquaculture cage, so as to make the draft depth of the modular deep-sea aquaculture cage ≤1.2 meters.

[0023] The beneficial effect of the present invention is that the transverse airbag of the present invention is installed horizontally, so that the draft is shallow and the cage can float on the water surface. This greatly facilitates installation, and the cage can be assembled in an area with a water depth of more than 2 meters at high tide. When the tide exceeds 1.2 meters, the cage floats on the water surface, and our sea areas basically have a tidal range of more than 2 meters. We can easily choose a good installation location, which greatly reduces the restrictions on the site. The cost of the site will also be greatly reduced. The weight of the polymer airbag is much smaller than that of the steel structure (steel cylinder), and no deep-water dock is required for transportation and installation, and the site cost is reduced by 60%.

[0024] Furthermore, in the above-mentioned modular deep-sea aquaculture cage, the interior of the modular deep-sea aquaculture cage is divided into four independent aquaculture zones by a cross-shaped detachable partition.

[0025] Furthermore, in the above-mentioned modular deep-sea aquaculture cage, the cross-shaped detachable partition adopts a high-strength polyethylene mesh, and the net of each partition is independently installed and fixed by quick buckles.

[0026] Furthermore, the above-mentioned modular deep-sea aquaculture cage also includes a side vertically suspended airbag 4, and the side vertically suspended airbag 4 is suspended between the top limiting platform 3 and the modular bottom load-bearing frame 1.

[0027] One end of the vertical airbag of the present invention is hung on the base frame, and the buoyancy acts on the base frame. The main body of the net cage is dragged in the water by the buoyancy generated by the airbag. The time when the wave passes through the vertical airbag is different, and each airbag is not subjected to force at the same time. The wave force is eliminated by floating and swinging alone, forming a multi-point independent shock absorber. The stability of the net cage is better during waves.

[0028] Furthermore, in the above-mentioned modular deep-sea aquaculture cage, the top limiting platform 3 includes a steel grid limiting frame 31, and the side vertical suspension airbags 4 are suspended inside the steel grid limiting frame 31 in a one-to-one correspondence through steel cables.

[0029] As can be seen from the above description, the side vertical suspension airbag is connected by a steel cable and a steel grid limit frame, and the swing space above is limited, so the front end of the airbag is fixed. The airbag can still swing, but the swing amplitude is very small, so there will not be a lot of inertia, and a spring can be designed to buffer and return to the original position.

[0030] Furthermore, in the above-mentioned modular deep-sea aquaculture cage, the steel cable is connected to the steel grid limiting frame through a spring.

[0031] As can be seen from the above description, the provision of a spring can buffer the swing of the side vertical suspension airbag and promote its return to its original position as soon as possible.

[0032] Furthermore, in the above-mentioned modular deep-sea aquaculture cage, the surface of the steel grid limiting frame is coated with a polyurethane wear-resistant layer, the thickness of the polyurethane wear-resistant layer is ≥5 mm, and the surface of the polyurethane wear-resistant layer is provided with anti-slip textures.

[0033] As can be seen from the above description, the side vertically suspended airbag is just limited by the steel grid limit frame in the inflated state, and the surface of the steel grid limit frame has anti-corrosion and anti-friction measures to ensure the service life of the airbag. The swing amplitude of the side vertically suspended airbag is limited. The airbag can swing, but the amplitude is limited, so it will not hit the truss structure of the net box, ensuring that the truss structure of the net box will not be damaged.

[0034] Furthermore, in the above-mentioned modular deep-sea aquaculture cage, the intermediate truss is composed of a grid assembled from bolt balls and steel pipes, and the bolt balls are treated with hot-dip galvanizing for corrosion protection.

[0035] From the above description, it can be seen that the main body of the net box is made on a modular bottom load-bearing frame, which is connected to the frame through bolt balls. They are first connected together with bolts, and then the connection parts are welded with argon arc welding technology after all the bottoms are connected. This ensures the reliability of the connection, and then the welding positions are treated with anti-corrosion.

[0036] Furthermore, in the above-mentioned modular deep-sea aquaculture cage, the diameter of the steel pipe is 80 mm. Furthermore, in the above-mentioned modular deep-sea aquaculture cage, the frame module is 10.5 meters long, 2 meters wide, and 1.6 meters high. The frame module is 10.5 meters long, 2 meters wide, and 1.6 meters high. The length of the transverse airbag 2 is 10 meters and the diameter is 1.6 meters.

[0037] Embodiment 1 Please refer to Figure 1 , Figure 2 and Figure 3 , a modular deep-sea aquaculture cage, comprising, from top to bottom, a top limiting platform 3, an intermediate truss and a modular bottom load-bearing frame 1; The modular bottom load-bearing frame 1 includes a plurality of frame modules connected by bolts and welded to form a field shape; a long horizontal air bag 2 is arranged in the frame module. The total buoyancy of the horizontal air bag 2 is greater than 1.2 times the dead weight of the cage frame, and is used to make the draft depth of the cage frame ≤1.2 meters.

[0038] The interior of the modular deep-sea aquaculture cage is divided into four independent aquaculture zones by a cross-shaped detachable partition. The cross-shaped detachable partition is made of high-strength polyethylene mesh, and the mesh of each zone is independently installed and fixed by quick buckles.

[0039] The modular deep-sea aquaculture cage further includes a side vertical suspension airbag 4, which is suspended between the top limiting platform 3 and the modular bottom load-bearing frame 1. The top limiting platform 3 includes a steel grid limiting frame 31, and the side vertical suspension airbag 4 is suspended in the steel grid limiting frame 31 in a one-to-one correspondence through steel cables. The steel cables are connected to the steel grid limiting frame 31 through springs.

[0040] The surface of the steel grid limiting frame 31 is covered with a polyurethane wear-resistant layer, the thickness of the polyurethane wear-resistant layer is ≥5 mm, and the surface of the polyurethane wear-resistant layer is provided with anti-slip textures.

[0041] The intermediate truss is composed of a grid composed of bolt balls and steel pipes, the bolt balls are treated with hot-dip galvanizing for corrosion protection, and the steel pipe has a diameter of 80 mm.

[0042] The frame module has a length of 10.5 meters, a width of 2 meters, and a height of 1.6 meters. The transverse airbag 2 has a length of 10 meters and a diameter of 1.6 meters.

[0043] The modular deep-sea aquaculture cage of the present invention is convenient for automobile transportation, and the frame has a position connected to the main structure of the cage. After the frame is transported to the site, the frame is first assembled and leveled, and the main structure of the cage can be assembled on the frame.

[0044] The frame module is provided with airbag hanging points and anchor chain connection points, and the hanging point spacing is 3 meters. The anchor chain connection points are distributed at the four corners of the bottom frame and the midpoint of the edge line, and each connection point is equipped with an adjustable tensioning device. The net box is controlled in a relatively fixed position through multiple anchors. The steel pipe has little resistance to water, while the net and airbag have greater resistance to water. The resistance of the net to water and the resistance of the airbag to water are separate. The resistance of the airbag to water is directly applied to the crossbeam of the base frame through the steel cable. The net is installed on the main structure and is transmitted to the base frame through the truss structure steel pipe of the net box, making the net box stable and durable.

[0045] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A modular deep-sea aquaculture cage, characterized in that: From top to bottom, it includes: top limit platform, middle truss and modular bottom load-bearing frame; The modular bottom load-bearing frame includes a plurality of frame modules connected by bolts and welded to form a field shape; a long horizontal air bag is arranged in the frame module, and the total buoyancy of the horizontal air bag is greater than 1.2 times the dead weight of the modular deep-sea aquaculture cage, so as to make the draft depth of the modular deep-sea aquaculture cage ≤1.2 meters.

2. The modular deep-sea aquaculture cage according to claim 1, characterized in that: The interior of the modular deep-sea aquaculture cage is divided into four independent aquaculture zones by a cross-shaped detachable partition.

3. The modular deep-sea aquaculture cage according to claim 2, characterized in that: The cross-shaped detachable partition is made of high-strength polyethylene mesh, and the mesh of each partition is installed independently and fixed by quick buckles.

4. The modular deep-sea aquaculture cage according to claim 1, characterized in that: It also includes a side vertical suspension airbag, which is suspended between the top limiting platform and the modular bottom load-bearing frame.

5. The modular deep-sea aquaculture cage according to claim 4, characterized in that: The top limiting platform comprises a steel grid limiting frame, and the side vertically suspended airbags are suspended inside the steel grid limiting frame in a one-to-one correspondence through steel cables.

6. The modular deep-sea aquaculture cage according to claim 5, characterized in that: The steel cable is connected to the steel grid limiting frame through a spring.

7. The modular deep-sea aquaculture cage according to claim 6, characterized in that: The surface of the steel grid limiting frame is covered with a polyurethane wear-resistant layer, the thickness of the polyurethane wear-resistant layer is ≥5 mm, and the surface of the polyurethane wear-resistant layer is provided with anti-slip textures.

8. The modular deep-sea aquaculture cage according to claim 1, characterized in that: The intermediate truss is composed of a grid assembled from bolt balls and steel pipes, and the bolt balls are treated with hot-dip galvanizing for corrosion protection.

9. The modular deep-sea aquaculture cage according to claim 8, characterized in that: The steel pipe has a diameter of 80 mm.

10. The modular deep-sea aquaculture cage according to claim 1, characterized in that: The frame module is 10.5 meters long, 2 meters wide and 1.6 meters high. The transverse airbag is 10 meters long and 1.6 meters in diameter.

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