Air bag structure of deep sea aquaculture net cage

Abstract

The invention relates to the technical field of aquaculture, in particular to an air bag structure of a deep sea aquaculture net cage, which comprises a net cage frame and a floating body, the net cage frame comprises a base frame at the bottom end and a corridor frame at the top end; the floating body comprises a transverse air bag and a vertical air bag, and the transverse air bag is horizontally fixed in the base frame; the two ends of the vertical air bag are hinged to the base frame and the corridor frame respectively. The net cage has the beneficial effects that the transverse air bags are horizontally mounted, so that the net cage can emerge from the water surface when the immersion depth is small. Therefore, great convenience is brought to installation. One end of the vertical air bag is hung on the base frame, buoyancy acts on the base frame, and the net cage body is dragged in water by the buoyancy generated by the air bag. When waves pass through the vertical air bags at different times, the air bags are not stressed at the same time, wave force is eliminated independently through floating and swinging, and a multi-point independent shock absorber is formed. And the net cage has better stability in the wave period.

Description

Technical Field

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

[0002] Deep-sea aquaculture has a long history. Compared with the aquaculture environment in the bay, the water exchange in the open sea is better, the water quality is better, and there are fewer pests and diseases. However, aquaculture in the open sea is more risky. The biggest risk of deep-sea aquaculture is typhoons and the waves brought by typhoons. The impact of waves on seawater also decreases with the increase of the depth of seawater. Scientific research has shown that the deeper the water depth, the smaller the impact of waves. The impact is very small when the water depth reaches 8 meters, and there is basically no impact when it exceeds 12 meters. Therefore, the safest area for the depth of marine aquaculture water should be below 8 meters. Considering the difficulty and cost of building aquaculture equipment, and the fact that marine fish are basically active in an area within 30 meters, the height of the aquaculture cage should be 15 to 20 meters as the most economical and practical solution. The cage floats on the water. There is still a lot of space from 6 meters to 15 meters during typhoons and big waves. If it is 20 meters, the space is even larger. During this period, the fish will choose comfortable waters on their own. The function of aquaculture cages is to provide a stable growth space for farmed fish without being affected by waves. When there are big waves, fish will dive into the waveless area on their own initiative, so 6 to 20 meters is the safest area.

[0003] In order to manufacture high-strength and cost-effective deep-sea aquaculture cages, existing 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

[0004] The technical problem to be solved by the present invention is to provide an air bag structure for a deep-sea aquaculture cage which does not require a deep-water dock for transportation and installation and has good stability during waves.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: to provide an air bag structure of a deep-sea aquaculture cage, comprising a cage frame and a floating body, wherein the cage frame comprises a base frame at the bottom and a corridor frame at the top; The floating body comprises a transverse airbag and a vertical airbag. The transverse airbag is horizontally fixed inside the base frame; two ends of the vertical airbag are respectively dynamically connected to the base frame and the corridor frame.

[0006] Furthermore, in the airbag structure of the above-mentioned deep-sea aquaculture cage, steel plates are provided at both ends of the vertical airbag, and the two ends of the vertical airbag are respectively hinged to the base frame and the corridor frame through corresponding steel plates.

[0007] Furthermore, in the above-mentioned air bag structure of the deep-sea aquaculture cage, the horizontal cross-section of the cage frame is a square, and the side length of the cage frame is 42 meters.

[0008] Furthermore, in the air bag structure of the above-mentioned deep-sea aquaculture cage, the transverse air bag is of a long strip type, and the length of the transverse air bag is 10 meters and the diameter is 1.6 meters.

[0009] Furthermore, in the air bag structure of the above-mentioned deep-sea aquaculture cage, the vertical air bag has a length of 15-20 meters and a diameter of 1.2 meters.

[0010] Furthermore, in the airbag structure of the above-mentioned deep-sea aquaculture cage, the transverse airbag adopts a double-layer structure, with an inner layer of butyl rubber and an outer layer of polyurethane material.

[0011] Furthermore, in the above-mentioned airbag structure of the deep-sea aquaculture cage, the total buoyancy of the transverse airbags is greater than 1.2 times the dead weight of the cage frame, so as to make the draft depth of the cage frame ≤1.2 meters.

[0012] Furthermore, in the airbag structure of the above-mentioned deep-sea aquaculture cage, the corridor frame at the top includes a limiting frame, and the vertical airbags are suspended inside the limiting frame in a one-to-one correspondence.

[0013] Furthermore, in the above-mentioned airbag structure of the deep-sea aquaculture cage, the surface of the limiting frame is coated with a polyurethane wear-resistant layer.

[0014] The beneficial effect of the present invention is that the transverse airbag of the present invention is installed horizontally, so that when the draft is shallow, the net cage can float on the water surface. This greatly facilitates installation. 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A side view of a partial structure of an air bag structure of a deep-sea aquaculture cage according to a specific embodiment of the present invention; Figure 2 It is a top view of a partial structure of a base frame of an air bag structure of a deep-sea aquaculture cage according to a specific embodiment of the present invention; Figure 3 It is a structural schematic diagram of a transverse airbag of an airbag structure of a deep-sea aquaculture cage according to a specific embodiment of the present invention; Description of labels: 1. Base frame; 2. Corridor frame; 21. Limit frame; 3. Vertical airbag; 4. Horizontal airbag. DETAILED DESCRIPTION

[0016] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0017] Please refer to Figure 1 , Figure 2 and Figure 3 The present invention provides an air bag structure for a deep-sea aquaculture cage, comprising a cage frame and a floating body, wherein the cage frame comprises a base frame 1 at the bottom and a corridor frame 2 at the top; The floating body includes a transverse airbag 4 and a vertical airbag 3. The transverse airbag 4 is horizontally fixed inside the base frame 1; the two ends of the vertical airbag 3 are dynamically connected to the base frame 1 and the corridor frame 2 respectively.

[0018] The beneficial effect of the present invention is that the transverse airbag of the present invention is installed horizontally, so that when the draft is shallow, the net cage can float on the water surface. This greatly facilitates installation. 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.

[0019] Furthermore, in the airbag structure of the above-mentioned deep-sea aquaculture cage, a first steel plate and a second steel plate are respectively provided at the upper and lower ends of the vertical airbag 3, a first connecting rod is provided between the first steel plate and the base frame 1, and the two ends of the first connecting rod are respectively hinged to the steel plate and the base frame 1, a second connecting rod is provided between the second steel plate and the corridor frame 2, and the two ends of the second connecting rod are respectively hinged to the second steel plate and the corridor frame 2.

[0020] It can be seen from the above description that the provision of the steel plate makes the suspension of the vertical airbag more firm and stable.

[0021] Furthermore, in the above-mentioned air bag structure of the deep-sea aquaculture cage, the horizontal cross-section of the cage frame is a square, and the side length of the cage frame is 42 meters.

[0022] Furthermore, in the air bag structure of the above-mentioned deep-sea aquaculture cage, the transverse air bag 4 is long and has a length of 10 meters and a diameter of 1.6 meters.

[0023] Furthermore, in the air bag structure of the above-mentioned deep-sea aquaculture cage, the vertical air bag 3 is 15-20 meters long and 1.2 meters in diameter.

[0024] Furthermore, in the airbag structure of the above-mentioned deep-sea aquaculture cage, the total buoyancy of the transverse airbags 4 is greater than 1.2 times the deadweight of the cage frame, so as to make the draft depth of the cage frame ≤1.2 meters.

[0025] As can be seen from the above description, the above arrangement is convenient for installation, and the cage can be assembled in an area where the water depth exceeds 2 meters at high tide. When the tide exceeds 1.2 meters, the cage floats on the water surface, greatly reducing the limitation of the site. The cost of the site will also be greatly reduced.

[0026] Furthermore, in the airbag structure of the above-mentioned deep-sea aquaculture cage, the corridor frame at the top includes a limiting frame 21, and the vertical airbags 3 are suspended inside the limiting frame 21 in a one-to-one correspondence.

[0027] As can be seen from the above description, the vertical airbag is just limited by the limit frame in the inflated state, and the surface of the limit frame has anti-corrosion and anti-friction measures to ensure the service life of the vertical airbag. The swing amplitude of the vertical airbag is limited. The vertical 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.

[0028] Furthermore, in the above-mentioned air bag structure of the deep-sea aquaculture cage, the surface of the limiting frame 21 is coated with a polyurethane wear-resistant layer.

[0029] As can be seen from the above description, the surface of the frame is protected by wear-resistant rubber of the same material as the airbag, so that the airbag can be protected from being worn when in contact with it.

[0030] Embodiment 1 Please refer to Figure 1 , Figure 2 and Figure 3 , an air bag structure of a deep-sea aquaculture cage, comprising a cage frame and a float, wherein the cage frame comprises a base frame 1 at the bottom and a corridor frame 2 at the top; The floating body includes a transverse airbag 4 and a vertical airbag 3. The transverse airbag 4 is horizontally fixed inside the base frame 1; the two ends of the vertical airbag 3 are dynamically connected to the base frame 1 and the corridor frame 2 respectively.

[0031] a. Horizontal airbags 4: This set of airbags is installed horizontally. The airbags are installed in the bottom frame of the cage and are restricted within the frame and cannot move. It is designed based on the fact that there will be no wave impact below 10 meters below the water surface. The weight and force of the cage can be calculated through design, and the corresponding number of airbags are installed to ensure that there is enough buoyancy for the cage to float on the water surface.

[0032] For example, the weight of the cage is 400 tons, the side length of the cage is 42 meters, the thickness of the frame is 2 meters, and the total length of the bottom frame of the cage is 4×42 meters, plus the horizontal 40✕2 meters in the middle equals 250 meters.

[0033] If you install a 10-meter-long horizontal airbag, you can install 24 of them. The diameter of the horizontal airbag is 1.6 meters. Each airbag can generate 20 tons of buoyancy, so 24 horizontal airbags can generate 480 tons of buoyancy. This buoyancy is enough to float the cage on the water. The airbag is installed horizontally, and the draft depth is only 1.2 meters, and the cage can float on the water. This greatly facilitates the installation, and you can choose to assemble the cage 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. The sea area basically has a tidal range of more than 2 meters, so it is easy to choose a good installation location, which greatly reduces the restrictions on the site. The cost of the site will also be greatly reduced.

[0034] With the bottom airbag installation plan, we also need to solve the airbag installation plan when the cage is operating normally. The cage is suspended in the water, and the working platform is about 2 meters above the water surface. This is a normal operation.

[0035] b. Vertical airbag 3: The upper and lower ends of the vertical airbag 3 are respectively provided with a first steel plate and a second steel plate, a first connecting rod is provided between the first steel plate and the base frame, and the two ends of the first connecting rod are respectively hinged to the steel plate and the base frame, a second connecting rod is provided between the second steel plate and the corridor frame 2, and the two ends of the second connecting rod are respectively hinged to the second steel plate and the corridor frame 2.

[0036] One end of the vertical airbag is hung on the base frame, and the buoyancy acts on the base frame, which makes the balance better when waves act. The independently suspended vertical airbag has its hanging point placed on the bottom frame, and the main body of the cage is dragged in the water by the buoyancy generated by the vertical airbag.

[0037] The time when waves pass through the vertical airbags is different. Each vertical airbag is not stressed at the same time. The wave force is eliminated by floating and swaying alone, forming a multi-point independent shock absorber. The cage is more stable during waves.

[0038] Because the volume and length of the airbag will change when it is inflated, there is a margin for the length after the airbag is installed. It cannot be tied too tightly when hanging, so there is a gap for swinging. The airbag will swing when it is hit by waves. Through repeated experiments, we have made adjustments to the upper structure of the cage. First, the length of our airbag is lengthened, and the length of the airbag is basically the same as the main height of the cage. The airbag is suspended on the bottom of the cage.

[0039] When the cage enters the seawater from the bottom frame, the long suspension airbag on the side will immediately provide buoyancy. When diving, the pressure of the airbag on the side is controlled, and the airbag slowly discharges gas, so the cage can sink steadily and slowly without a large tilt angle. Similarly, when the cage needs to float to the surface, the airbag on the side is inflated, and the cage will slowly rise.

[0040] If you want to float the cage out of the water, when the side suspension airbag of the cage rises to a certain height, add air to the small airbag on the bottom frame, and the cage will float out of the water smoothly. By using the long airbag, the existing problems in the cage lifting operation are completely solved.

[0041] In the present invention, the walkway of the corridor frame will be exposed about 2 meters above the water surface, and the top of the vertical airbag is about 0.5 meters away from the walkway. A limit frame 21 is designed at a position 2.5 meters below the walkway platform. The surface of the limit frame is protected by wear-resistant rubber made of the same material as the airbag. In this way, the vertical airbag can be protected when it contacts it and will not be worn. The vertical airbag itself and the frame are not fixedly connected, and the swing amplitude of the airbag is controlled. Furthermore, 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 cage has better stability during waves.

[0042] 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. An air bag structure for a deep-sea aquaculture cage, characterized in that: It comprises a net cage frame and a floating body, wherein the net cage frame comprises a base frame at the bottom and a corridor frame at the top; The floating body comprises a transverse airbag and a vertical airbag. The transverse airbag is horizontally fixed inside the base frame; two ends of the vertical airbag are respectively dynamically connected to the base frame and the corridor frame.

2. The air bag structure of the deep sea aquaculture cage according to claim 1, characterized in that: A first steel plate and a second steel plate are respectively provided at the upper and lower ends of the vertical airbag, a first connecting rod is provided between the first steel plate and the base frame, and the two ends of the first connecting rod are respectively hinged to the steel plate and the base frame, a second connecting rod is provided between the second steel plate and the corridor frame, and the two ends of the second connecting rod are respectively hinged to the second steel plate and the corridor frame.

3. The air bag structure of the deep sea aquaculture cage according to claim 1, characterized in that: The horizontal cross-section of the cage frame is a square, and the side length of the cage frame is 42 meters.

4. The air bag structure of the deep sea aquaculture cage according to claim 1, characterized in that: The transverse airbag is in the shape of a long strip, with a length of 10 meters and a diameter of 1.6 meters.

5. The air bag structure of the deep sea aquaculture cage according to claim 1, characterized in that: The vertical airbag has a length of 15-20 meters and a diameter of 1.2 meters.

6. The air bag structure of the deep sea aquaculture cage according to claim 1, characterized in that: The total buoyancy of the transversely placed airbags is greater than 1.2 times the deadweight of the cage frame, and is used to ensure that the draft depth of the cage frame is ≤1.2 meters.

7. The air bag structure of the deep sea aquaculture cage according to claim 1, characterized in that: The corridor frame at the top includes a limiting frame, and the vertical airbags are suspended inside the limiting frame in a one-to-one correspondence.

8. The air bag structure of the deep sea aquaculture cage according to claim 7, characterized in that: The surface of the limiting frame is coated with a polyurethane wear-resistant layer.

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