CN107318732B - Anchor chain system with single-point anchoring net cage with power buffering function - Google Patents
Anchor chain system with single-point anchoring net cage with power buffering function Download PDFInfo
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- 238000004873 anchoring Methods 0.000 title claims abstract description 62
- 230000003139 buffering effect Effects 0.000 title claims abstract description 19
- 238000007667 floating Methods 0.000 claims abstract description 31
- 239000011148 porous material Substances 0.000 claims abstract description 25
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 10
- 230000005489 elastic deformation Effects 0.000 abstract description 18
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- 238000010276 construction Methods 0.000 description 5
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- 229910000831 Steel Inorganic materials 0.000 description 2
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- 238000009364 mariculture Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 231100000817 safety factor Toxicity 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 241000196171 Hydrodictyon reticulatum Species 0.000 description 1
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- 230000002349 favourable effect Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
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Abstract
The invention discloses an anchor chain system with a single-point anchoring net cage with a power buffering functionThe mooring device comprises a plurality of elastic pipes, sleeves and n-level anchor chains, wherein a mooring ring is arranged in the middle of each elastic pipe, one end of each first-level anchor chain in each n-level anchor chain is moored on a mooring foundation, and the other end of each first-level anchor chain is fixedly moored on the mooring ring of one elastic pipe; a secondary anchor chain is installed in a pore passage of the elastic pipe connected with the primary anchor chain in a penetrating manner, and two ends of the secondary anchor chain extend out of the elastic pipe and are respectively connected to a mooring ring of the elastic pipe; a third-level anchor chain is respectively installed in the elastic pipe pore passages connected with the two ends of the second-level anchor chain in a penetrating manner, and the two ends of the third-level anchor chain extend out of the elastic pipe and are respectively connected to the mooring rings of the elastic pipe; by parity of reasoning, the mutual connection of all levels of anchor chains is realized, and finally, two ends of n levels of anchor chains are moored on the floating pipe frame to form an anchor chain system. The invention has 2n‑1The mooring points are connected with the floating pipe frame, so that the stress concentration at the mooring points can be reduced, large elastic deformation can be generated, and the floating pipe frame has a power buffering function.
Description
The technical field is as follows:
the invention relates to a mariculture net cage, in particular to an anchor chain system with a power buffering function for a single-point anchoring net cage.
Background art:
the mariculture net cage is connected with the anchoring foundation on the seabed through anchor chains. The anchor chain plays the effect of mooring, fixed box with a net, and the stormy waves effect that the box with a net received is transmitted to the anchoring basis through the anchor chain. For the anchor chain system of the seawater net cage, the following two aspects are the important points of attention:
firstly, anchoring mode of anchor chain:
traditional box with a net adopts the multiple spot straight anchor method to the influence that comes from uncertain wind direction to the box with a net, if the 6 anchor methods that single case adopted, every 60 degrees set up an anchor, no matter which direction is coming the wind, all have 2 anchorages effects at least. The net cages disclosed in the Chinese patent grant publication numbers CN1176578C, CN204949099U, CN204949120U and the like are all in a typical multi-point anchoring mode. The multi-point anchoring system has the limitations of high construction difficulty, difficult guarantee of construction quality, low efficiency, high cost and difficult maintenance, and the damage phenomenon is serious under the action of larger wind wave load.
In order to comply with the development of deep water net cages, single-point anchoring systems have been developed gradually. Compared with a multi-point anchoring system, the single-point anchoring system has the characteristics of strong typhoon resistance, simple construction, cost saving and sea area resource saving, and is the main technical direction for the development of the deepwater net cage. The embodiments disclosed in chinese patent publication nos. CN104186383B, CN104604768B, CN104186381B, etc. are all intended to be typical single point anchoring.
However, a common single-point anchoring system and a net cage frame usually have only one connection point and one mooring point, which causes the connection point to be heavily loaded and stress concentration phenomenon to be serious, and although reinforcement processing is performed at the mooring point of the net cage frame, the net cage frame is still easily collapsed, broken and damaged under severe working conditions.
Secondly, the buffer function of the anchor chain:
the conventional anchor chain is formed by connecting a plurality of steel chain links, and is divided into a cast steel anchor chain, a flash welding anchor chain and a forging anchor chain according to the manufacturing method, and is divided into a chain with a link and a chain without a link according to the chain link structure. The anchor chain may be made up of several "sections" connected by links or shackles. The anchor chain has high strength, deformation of the anchor chain under the action of external force can be ignored compared with water flow displacement, no active energy consumption is caused, and the anchor chain is similar to rigid connection.
When the sea stormy waves are large, the net cage is subjected to large impact load accompanied with a high-frequency oscillation phenomenon. Because the length of the tightened anchor chain is not changed any more, the impact load has no buffering and energy dissipation, so that the net cage frame and the anchoring foundation are easy to damage under the action of large waves.
If the anchor chain can generate elastic deformation with a certain amplitude in the stress process, the anchor chain actively adapts to high-frequency oscillation and impact load, partial storm impact energy is absorbed and consumed through elastic deformation, the original size can be recovered when the storm is small, the anchor chain has a power buffering function, and the anchor chain is similar to flexible connection, so that the anchor chain is necessarily favorable for improving the safety of a net cage or an anchoring foundation.
The technical problem to be solved by the invention is as follows: the anchor chain system with the power buffering function for the single-point anchoring net cage is designed, on one hand, the anchor chain system belongs to a single-point anchoring system, but large stress concentration cannot be generated at a mooring point and a connecting part of a net cage frame, on the other hand, the anchor chain system has the power buffering function, large elastic deformation can be generated under the action of stormy waves, the net cage and an anchoring foundation can be effectively protected, and the stormy waves resistance of the net cage and the anchoring foundation can be improved.
The invention content is as follows:
in order to overcome the defects of the prior art, the invention aims to provide the anchor chain system with the power buffering function for the single-point anchoring net cage, which has the advantages of simple structure, convenience in connection, capability of greatly reducing stress concentration at the mooring point of the net cage, capability of generating large elastic deformation and power buffering effect.
The technical scheme of the invention is as follows:
the anchor chain system with the single-point anchoring net cage with the power buffering function is characterized by comprising a plurality of elastic pipes, sleeves and n-level anchor chains, wherein mooring rings are arranged in the middle of the elastic pipes, one end of each of the n-level anchor chains is moored on an anchoring foundation, and the other end of each of the n-level anchor chains is fixedly moored on the mooring ring of one elastic pipe;
a secondary anchor chain is installed in a pore passage of the elastic pipe connected with the primary anchor chain in a penetrating manner, and two ends of the secondary anchor chain extend out of the elastic pipe and are respectively connected to a mooring ring of the elastic pipe;
a third-level anchor chain is respectively installed in the elastic pipe pore passages connected with the two ends of the second-level anchor chain in a penetrating manner, and the two ends of the third-level anchor chain extend out of the elastic pipe and are respectively connected to the mooring rings of the elastic pipe;
a fourth-level anchor chain is respectively arranged in the elastic pipe pore passages connected with the two ends of the third-level anchor chain in a penetrating way, and the two ends of the fourth-level anchor chain extend out of the elastic pipe and are respectively connected to a mooring ring of the elastic pipe;
by analogy, the mutual connection of all levels of anchor chains is realized, sleeves are sleeved on the extending sections of the two sides of the elastic pipe of all levels of anchor chains except the first level of anchor chain, and finally the two ends of the n levels of anchor chains are moored on the floating pipe frame to form an anchor chain system.
The anchor chain system with the single-point anchoring net cage with the power buffering function is characterized in that the elastic pipe is made of high-strength and high-elasticity materials into a circular arc shape, a pore passage is formed in the elastic pipe, a mooring ring is arranged in the middle of the elastic pipe, and the diameter of the pore passage of the elastic pipe is larger than two times of the outer diameter of the anchor chain.
The anchor chain system with the single-point anchoring net cage with the power buffering function is characterized in that the sleeve is made of a PVC pipe, the diameter of a sleeve hole is more than twice of the outer diameter of the anchor chain, and the length of the sleeve is 20 cm-50 cm.
The anchor chain system with the power buffering function of the single-point anchoring net cage is characterized in that the total number of the anchor chain system and the floating pipe frame is 2(n-1)A mooring point, 2(n-1)The mooring points are uniformly distributed in the range of 90-degree arc length of the floating pipe frame.
The anchor chain system with the power buffering function of the single-point anchoring net cage is characterized in that the value range of n is 1< n < 10.
Compared with the prior art, the invention has the following advantages:
1. compared with the multi-point anchoring mode, the net cage using the single-point anchoring mode has the characteristics of strong typhoon resistance, simple construction, cost saving and sea area resource saving, and represents the advanced development direction of the net cage anchoring mode;
2. the elastic pipes can generate larger elastic deformation, and an anchor chain system which uses a plurality of elastic pipes cumulatively can generate larger elastic deformation under the action of wind waves, actively adapts to high-frequency oscillation and impact load, has the energy dissipation effect, can effectively protect the net cage and the anchoring foundation, and can improve the wind wave resistance of the net cage and the anchoring foundation;
3. the sliding connection of the anchor chains at all levels and the elastic tube ensures that the load is automatically and uniformly transferred among the anchor chains at all levels, so that the tension borne by the same level of anchor chain is basically equivalent, and the gradual decomposition and transfer of the tension of the anchor chain are realized;
4. the invention totally has 2(n-1)The mooring points are connected with the floating pipe frame, so that the stress concentration at the mooring points of the net cage floating pipe frame can be greatly reduced, and the safety of the net cage floating pipe frame is improved;
5. the two sides of the anchor chain which is connected with the elastic tube in a sliding way are sleeved with the plurality of sleeves, so that the friction and the mutual winding of the anchor chain at the two sides of the sliding connection can be effectively prevented, and the anchor chain is a cheap treatment measure.
Description of the drawings:
fig. 1 is a schematic view of the structure of the elastic tube of the present invention.
FIG. 2 is a schematic diagram of the structure of the mooring chain of the elastic pipe system of the present invention.
Fig. 3 is a schematic diagram of the structure of the elastic tube of the present invention deformed by force.
FIG. 4 is a schematic view of the anchor chain nested in the casing according to the present invention.
Fig. 5 is a schematic view of the structure of the anchor chain system connecting net cage of the present invention.
FIG. 6 is a schematic structural view of a tertiary hawse system of the present invention.
FIG. 7 is a schematic diagram of a four-level hawse system of the present invention.
Description of reference numerals: 1. an elastic tube; 2. a duct; 3. a mooring ring; 4. a primary anchor chain; 5. a secondary anchor chain; 6. the position after elastic deformation; 7. a sleeve; 8. anchoring a foundation; 9. netting; 10. sinking; 11. a floating pipe frame; 12. a third-level anchor chain; 13. a four-level anchor chain; A. sea level; B. a sea bed surface.
The specific implementation mode is as follows:
referring to the drawings:
the net cage is generally composed of a chain, a mooring foundation 8, a floating pipe frame 11, a netting 9, a sinker 10 and the like, wherein one end of a chain system is connected with the floating pipe frame 11, and the other end of the chain system is connected with the mooring foundation 8. The single-point anchoring system provided by the invention means that one end of an anchor chain system connected with an anchoring foundation is only provided with one mooring point, the anchoring foundation (or foundation group) is connected with an anchor chain through one mooring point, the interiors of the foundations (or foundation groups) can be connected in a complex mutual connection mode, but the foundations (or foundation groups) are finally connected with the anchor chain through one mooring point as a whole. In the single-point anchoring system, one end of the anchor chain connected with the net cage can be a mooring point, but also can be a plurality of mooring points. One end of the anchor chain system is connected with the anchoring foundation through one mooring point, and the other end of the anchor chain system is connected with the net cage through a plurality of mooring points, and the anchor chain system belongs to the category of single-point anchoring modes. Correspondingly, the multi-point anchoring system is characterized in that an anchoring foundation (or foundation group) is connected with a plurality of anchor chains through a plurality of mooring points, and the other ends of the anchor chains are connected with the net cage through a plurality of mooring points.
The single-point anchoring net cage anchor chain system with the power buffering function comprises an elastic pipe 1, a sleeve 7 and an n-level anchor chain, wherein the elastic pipe 1 is made of a high-strength and high-elasticity material, a hollow pore passage 2 is arranged in the elastic pipe 1, and a mooring ring 3 is arranged in the middle of the elastic pipe; the sleeve 7 is a hollow straight pipe with a certain length; during assembly, one end of the primary anchor chain 4 is moored on the anchoring foundation 8, and the other end of the primary anchor chain is fixedly moored on the mooring ring 3 of the elastic pipe 1; the secondary anchor chain 5 penetrates through a pore channel 2 of the elastic pipe 1 fixedly connected with the primary anchor chain 4, a plurality of sleeves 7 are sleeved on two sides of the secondary anchor chain 5, and two ends of the secondary anchor chain 5 are fixedly moored on a mooring ring 3 of the elastic pipe 1 respectively; the three-level anchor chain 12 penetrates through a pore channel 2 of the elastic pipe 1 fixedly connected with the two-level anchor chain 5, and after a plurality of sleeves 7 are sleeved on two sides of the three-level anchor chain 12, two ends of the three-level anchor chain 12 are fixedly moored on a mooring ring 3 of the elastic pipe 1 respectively; the four-level anchor chain 13 penetrates through the pore channel 2 of the elastic tube 1 fixedly connected with the three-level anchor chain 12, after the plurality of sleeves 7 are sleeved on the two sides of the four-level anchor chain 13, the two ends of the four-level anchor chain 13 are fixedly moored on the mooring ring 3 of the elastic tube 1 respectively; by analogy, the mutual connection of all levels of anchor chains is realized, finally, two ends of n levels of anchor chains are moored on the floating pipe frame 11, and the total number of the anchor chain system and the floating pipe frame 11 is 2(n-1)And n is a natural number greater than 1.
The 'primary anchor chain' provided by the invention refers to an anchor chain directly connected with the anchoring foundation 8, and only one 'primary anchor chain' in the single-point anchoring system is directly connected with the anchoring foundation 8; the 'second-level anchor chain' is an anchor chain which directly transmits the net cage load to the 'first-level anchor chain', so that the 'first-level anchor chain' is directly connected with the 'second-level anchor chain' through the elastic pipe 1; the 'third-level anchor chain' is an anchor chain which directly transmits the net cage load to the 'second-level anchor chain', so that the 'second-level anchor chain' is directly connected with the 'third-level anchor chain' through the elastic pipe 1; by analogy, the definition of "fourth-level anchor chain", "fifth-level anchor chain", etc. may be continued as shown in fig. 6 and 7. Loads are not directly transmitted between non-adjacent anchor chains, for example, the four-stage anchor chain can not directly transmit the loads to the second-stage anchor chain or the first-stage anchor chain.
The lengths of the anchor chains at the same level are the same, so that the whole anchor chain system is basically in a symmetrical state when the wind is calm and calm. As shown in fig. 7, the two tertiary anchor chains 12 are equal in length, and the four quaternary anchor chains 13 are equal in length.
If the anchor chain system uses n stages of anchor chains, the total number of the anchor chain system and the floating pipe frame 11 is 2(n-1)A mooring point. In order to allow each mooring point to be accepted reasonably and without affecting the volume of the netting, preferably these 2(n-1)The mooring points are evenly distributed within the 90-degree arc length range of the floating pipe frame 11. In practice, it is generally difficult to have an anchor chain exceeding 10, and therefore, 1 is preferable<n≤10。
The elastic tube 1 is made of high-strength and high-elasticity materials, is integrally in an arc shape, and a hollow pore channel 2 is arranged in the elastic tube 1 and is used for an anchor chain to pass through. The middle part of the elastic pipe 1 is provided with a mooring ring 3 for the fixed mooring of an anchor chain, as shown in figure 1.
When in connection, one end of one anchor chain is fixedly moored on a mooring ring 3 of the elastic pipe 1, and the other anchor chain penetrates into a pore passage 2 of the elastic pipe 1 to be in sliding connection, as shown in figure 2. The "sliding connection" means: the anchor chain can transmit the load to the elastic tube 1, but the anchor chain can also slide with the pore 2 of the elastic tube 1 as required, namely the connection point of the elastic tube 1 and the anchor chain is not fixed, and the mutual sliding and the position change can be generated at any time according to the different directions of the wind and wave load.
The elastic pipe 1 can generate larger elastic deformation after being loaded, and the position 6 of the elastic pipe 1 after being elastically deformed is basically in a symmetrical state with the mooring ring 3, as shown in figure 3. The elastic tube 1 has higher strength and elasticity, can generate larger elastic deformation when being loaded with larger load, and the anchor chain can also freely slide in the pore passage 2 of the elastic tube 1 which generates larger deformation; when the load is reduced, the elastic tube 1 can recover a certain elastic deformation; in calm weather, the elastic tube 1 substantially maintains its original shape. The elastic tube 1 has enough strength and does not generate plastic deformation, break and damage under severe working conditions; meanwhile, the elastic tube 1 has enough elasticity, can generate obvious elastic deformation under the action of large wind and wave load, realizes the power buffering function, and can maintain the anchor chain to freely slide in the elastic tube.
Assuming that the anchor chain system is provided with n levels of anchor chains, the elastic tubes 1 of n-1 levels are correspondingly matched, and assuming that the maximum elastic deformation of each level of elastic tube 1 is delta l, the maximum elastic deformation which can occur in the anchor chain system is accumulated to be (n-1) delta l. When the net cage and the anchoring foundation are subjected to large wind waves, the elastic deformation (n-1) delta l of the anchor chain inevitably absorbs and consumes large wind wave impact energy, so that the peak clipping of wind wave load on the net cage and the anchoring foundation is reduced and lagged, the dynamic buffer function is realized, and the safety of the net cage and the anchoring foundation is protected.
When the wind wave load is large, the elastic pipe 1 can generate large elastic deformation; when the wind and wave load becomes smaller or is positioned at the wave valley, the elastic pipe 1 can recover a certain deformation by utilizing the clearance time. The wind wave action is often characterized by intermittence and wave crest and wave trough, so the elastic pipe 1 can elastically extend and shorten the periodic deformation under the periodic wind wave action, can absorb and consume part of the wind wave impact energy, and has the functions of peak clipping and peak reduction on the wind wave load, thereby reducing the damage of the wind wave load to the net cage and the anchoring foundation. The traditional steel anchor chain cannot deform, larger wind and wave loads are directly transmitted to the net cage and the anchoring foundation in equal amount, and the safety threat to the net cage and the anchoring foundation is larger.
In order to make the anchor chain slide flexibly in the hole 2 of the elastic tube 1, the diameter of the hole 2 of the elastic tube 1 is preferably more than twice of the outer diameter of the anchor chain.
The sleeve pipe 7 is the cavity straight tube that has certain length, and a plurality of sleeve pipes 7 cover the hawse both sides with elastic tube 1 sliding connection, and its effect is: the friction and the mutual winding of the two sides of the sliding connection anchor chain are prevented, so that the anchor chain can maintain the effective sliding performance with the elastic tube 1, as shown in figure 4.
Under the action of large wind and wave load, the net cage generates irregular motion, and the anchor chain connected with the elastic pipe 1 in a sliding way and the pore channel 2 generate frequent sliding. If the sliding amplitude is too large, the anchor chains on the two sides can be intertwined, so that the anchor chains cannot slide freely, the tension on the two sides of the anchor chains is uneven, and a large stress concentration is generated on individual mooring points on the floating pipe frame. The two sides of the anchor chain in sliding connection are sleeved with the plurality of sleeves 7, so that the anchor chain on the two sides can be effectively prevented from being intertwined, and the method is a low-cost treatment method.
The casing 7 is generally made of PVC pipe, which is sleeved on the anchor chain and does not bear tension, and will sink to both sides of the elastic pipe 1 at a lower position under the action of its own gravity, as shown in fig. 5. Preferably, the length of the casing 7 is 20 cm-50 cm, and the diameter of the inner pore canal of the casing 7 is more than twice of the outer diameter of the anchor chain.
Multiple levels of anchor chains may be used depending on the actual requirements, and several embodiments are described below.
Example 1: the case of using the primary anchor chain 4 and the secondary anchor chain 5 is shown in FIG. 5. One end of the primary anchor chain 4 is moored on the anchoring foundation 8, and the other end is fixedly moored on the mooring ring 3 of the elastic pipe 1. The second-level anchor chain 5 penetrates through the pore channel 2 of the elastic pipe 1, and after the plurality of sleeves 7 are sleeved on two sides of the second-level anchor chain 5, two ends of the second-level anchor chain 5 are fixedly connected with the net cage floating pipe frame 11.
The resultant force of the two sides of the secondary anchor chain 5 is equal to the tension of the primary anchor chain 4, so that the tension of the secondary anchor chain 5 is less than the tension of the primary anchor chain 4. Through the interconnection of two-stage anchor chains, the stress concentration at the mooring point of the net cage floating pipe frame 11 is greatly reduced, and the safety of the net cage floating pipe frame 11 is improved.
Example 2: the case of using the primary anchor chain 4, the secondary anchor chain 5, and the tertiary anchor chain 12 is shown in fig. 6. The primary chain 4 and the secondary chain 5 are connected as in example 1. The third-level anchor chain 12 penetrates through the pore channel 2 of the elastic pipe 1 fixedly connected with the second-level anchor chain 5, and after the plurality of sleeves 7 are sleeved on two sides of the third-level anchor chain 12, two ends of the third-level anchor chain 12 are fixedly connected with the net cage floating pipe frame 11.
In the embodiment, the net cage floating pipe frame 11 has 4 mooring points, the load of the single-point anchoring system is uniformly distributed to the 4 mooring points, the stress concentration at the mooring points is obviously greatly reduced, and the safety of the net cage floating pipe frame 11 is improved.
Example 3: the case of using a four-level anchor chain is shown in FIG. 7. A primary anchor chain is added on the basis of the embodiment 2, and the connection method is the same as the above. In this embodiment, the net cage floating pipe frame 11 has 8 mooring points, and the load of the single-point anchoring system is uniformly distributed to the 8 mooring points, so that the stress concentration at the mooring points is greatly reduced, and the safety of the net cage floating pipe frame 11 is greatly improved.
Due to the sliding connection of the anchor chains at all levels and the elastic tube 1, the pulling force is uniformly transmitted among the anchor chains at all levels, so that the pulling force applied to the same level of anchor chain is basically equivalent. In this embodiment, the tension on the two tertiary anchor chains 12 is substantially equal, and the tension on the four quaternary anchor chains 13 is substantially equal.
The resultant force of each level of anchor chain is equal to the pulling force of the first level of anchor chain 4. In the present embodiment, the total force of the two sides of the secondary anchor chain 5 is equal to the tension of the primary anchor chain 4, the total force of the two tertiary anchor chains 12 is equal to the tension of the primary anchor chain 1, and the total force of the four quaternary anchor chains 13 is equal to the tension of the primary anchor chain 1.
Generally, the tensile force borne by the n-level anchor chain is smaller than that borne by the n-1-level anchor chain, so that the material sectional area of the n-level anchor chain can be reduced compared with the n-1-level anchor chain, and the purposes of saving materials and reducing manufacturing cost are achieved. Therefore, material parameters matched with the stress conditions of the anchor chains at all levels can be designed according to the stress conditions of the anchor chains at all levels, so that the safety factors of the anchor chains at all levels are basically the same, and the aim of optimizing design is fulfilled.
Correspondingly, the tensile force borne by the elastic tube 1 connected with the n-level anchor chain is smaller than the tensile force borne by the elastic tube 1 connected with the n-1-level anchor chain, so that the sectional area of the material of the elastic tube 1 connected with the n-level anchor chain can be reduced compared with that of the elastic tube 1 connected with the n-1-level anchor chain, and the purposes of saving materials and reducing the manufacturing cost are achieved. Therefore, the material parameters of the elastic tube 1 matched with the stress condition of each level of the anchor chain can be designed according to the stress condition of each level of the anchor chain, so that the safety factors of the elastic tubes 1 of each level are basically the same.
Further embodiments can be derived from the above idea, which is not exhaustive here.
The invention is comparable to the prior artCompared with the prior art, the method has the following advantages: compared with the multi-point anchoring mode, the net cage using the single-point anchoring mode has the characteristics of strong typhoon resistance, simple construction, cost saving and sea area resource saving, and represents the advanced development direction of the net cage anchoring mode; the elastic pipes can generate larger elastic deformation, and an anchor chain system which uses a plurality of elastic pipes cumulatively can generate larger elastic deformation under the action of wind waves, actively adapts to high-frequency oscillation and impact load, has the energy dissipation effect, can effectively protect the net cage and the anchoring foundation, and can improve the wind wave resistance of the net cage and the anchoring foundation; the sliding connection of each level of anchor chain and the elastic tube enables loads to be automatically and uniformly transmitted among the anchor chains, so that the tension borne by the same level of anchor chain is basically equivalent, and the gradual decomposition and transmission of the tension of the anchor chain are realized; the anchor chain system is totally 2n-1The mooring points are connected with the floating pipe frame, so that the stress concentration at the mooring points of the net cage floating pipe frame can be greatly reduced, and the safety of the net cage floating pipe frame is improved; the two sides of the anchor chain which is in sliding connection with the elastic tube are sleeved with the plurality of sleeves, so that the anchor chain on the two sides of the sliding connection can be effectively prevented from generating friction and mutual winding, and the method is a low-cost treatment measure.
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar parts; the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent.
The present invention is not limited to the above embodiments, and various other equivalent modifications, substitutions and alterations can be made without departing from the basic technical concept of the invention as described above, according to the common technical knowledge and conventional means in the field.
Claims (1)
1. The anchor chain system with the single-point anchoring net cage with the power buffering function is characterized by comprising a plurality of elastic pipes, sleeves and n-level anchor chains, wherein mooring rings are arranged in the middle of the elastic pipes, one end of each of the n-level anchor chains is moored on an anchoring foundation, and the other end of each of the n-level anchor chains is fixedly moored on the mooring ring of one elastic pipe;
a secondary anchor chain is installed in a pore passage of the elastic pipe connected with the primary anchor chain in a penetrating manner, and two ends of the secondary anchor chain extend out of the elastic pipe and are respectively connected to a mooring ring of the elastic pipe;
a third-level anchor chain is respectively installed in the elastic pipe pore passages connected with the two ends of the second-level anchor chain in a penetrating manner, and the two ends of the third-level anchor chain extend out of the elastic pipe and are respectively connected to the mooring rings of the elastic pipe;
a fourth-level anchor chain is respectively arranged in the elastic pipe pore passages connected with the two ends of the third-level anchor chain in a penetrating way, and the two ends of the fourth-level anchor chain extend out of the elastic pipe and are respectively connected to a mooring ring of the elastic pipe;
by analogy, the mutual connection of all levels of anchor chains is realized, sleeves are sleeved on the extending sections of the two sides of the elastic pipe of all levels of anchor chains except the first level of anchor chain, and finally the two ends of the n levels of anchor chains are moored on the floating pipe frame to form an anchor chain system;
the elastic pipe is made of high-strength and high-elasticity materials into an arc shape, a pore passage is arranged in the elastic pipe, a mooring ring is arranged in the middle of the elastic pipe, and the diameter of the pore passage of the elastic pipe is more than twice of the outer diameter of the anchor chain;
the sleeve is made of a PVC pipe, the diameter of a sleeve pore passage is more than twice of the outer diameter of the anchor chain, and the length of the sleeve is 20 cm-50 cm;
the anchor chain system and the floating pipe frame have 2 in total(n-1)A mooring point, 2(n-1)The mooring points are uniformly distributed in the range of 90 degrees of arc length of the floating pipe frame;
the value range of n is 1< n < 10.
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| CN201710588841.2A CN107318732B (en) | 2017-07-19 | 2017-07-19 | Anchor chain system with single-point anchoring net cage with power buffering function |
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| CN108990852B (en) * | 2018-08-27 | 2020-11-06 | 吴常文 | Sinking type snail breeding device |
| CN110583548A (en) * | 2019-10-28 | 2019-12-20 | 海南省民德海洋发展有限公司 | Anchoring system of culture facility |
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