Culture net cage based on offshore wind turbine foundation and tensioning method therefor

Abstract

Provided are a culture net cage based on an offshore wind turbine foundation and a tensioning method therefor. The culture net cage comprises a frame foundation, wherein netting is provided on the bottom surface and the side surfaces of the frame foundation. The netting has an initial state and a tensioned state. The length and the width of the frame foundation are L1 and L2. The length of the netting in the initial state is Ld1, and Ld1=(1.05-1.1)L1. The width of the netting in the initial state is Ld2, Ld2 is the original width of the netting, and Ld2=(0.9-0.95)L2. The length of the netting in the tensioned state is La1, and La1=L1. The width of the netting in the tensioned state is La2, and La2=L2.

Description

Mariculture net cage based on offshore wind power foundation and tensioning method thereof

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 2024109920116, filed on July 23, 2024, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of offshore wind power, in particular to a mariculture net cage based on offshore wind power foundation and a tensioning method thereof. BACKGROUND

[0004] The mode of combining offshore wind power with mariculture is a new way of comprehensive utilization of the sea, which effectively integrates two independent industries to achieve resource sharing and complementary advantages. By utilizing the space of offshore wind farms, mariculture facilities are set up in the gaps or surrounding areas, maximizing the use of marine space resources. For example, the foundation structure of a wind turbine can be designed to simultaneously support the supports of a mariculture net cage.

[0005] However, when the net cage is arranged in the jacket, especially in the deep sea, the net cover is not easy to tension, resulting in that after marine organisms grow on the net cover, the entire net cover cannot be automatically cleaned by a net cleaning robot due to its loose state, and only divers can be sent to clean it under the sea. In addition, the easily deformed net cover will deform with the increase of seawater flow rate, affecting the cultivation volume and the living space of fish, leading to the death of fish. SUMMARY

[0006] Embodiments of the present disclosure aim to at least partially solve one of the technical problems in the related art.

[0007] To this end, embodiments of the present disclosure propose a mariculture net cage based on offshore wind power foundation, which reasonably utilizes marine space resources and ensures mariculture effect.

[0008] The mariculture net cage based on offshore wind power foundation of the embodiments of the present disclosure comprises a frame foundation, the bottom surface and multiple side surfaces of the frame foundation are each provided with a net cover, the net cover has an initial state and a tensioned state, the distance of the frame foundation in the length direction of the net cover is L1, and the distance of the frame foundation in the width direction of the net cover is L2.

[0009] In the initial state of the net cover, both ends of the net cover in the length direction thereof are connected with the frame foundation, and the distance between both ends of the net cover in the length direction thereof is L d1 , L d1 is the original length of the net cover, and L d1=(1.05~1.1)L1, the distance between the two ends of the netting in the width direction thereof is L d2 , L d2 is the original width of the netting, and L d2 =(0.9~0.95)L2

[0010] The netting is in the tension state, the two ends of the netting in the length direction thereof and the two ends of the netting in the width direction thereof are connected with the frame base, the distance between the two ends of the netting in the length direction thereof is L a1 , L a1 is the assembly length of the netting, and L a1 =L1, the distance between the two ends of the netting in the width direction thereof is L a2 , L a2 is the assembly width of the netting, and L a2 =L2

[0011] The netting from the initial state to the tension state ensures that the netting is tensioned to an appropriate degree, so as to achieve the expected aquaculture effect.

[0012] In some embodiments, the distance between the two ends of the netting in the length direction thereof is shortened from L d1 to L a1 , the shortened amount is defined as S, the distance between the two ends of the netting in the width direction thereof is elongated from L d2 to L a2 , the elongated amount is defined as E, the physical quantity between the shortened amount and the elongated amount is U, and U=S / E, U>1.

[0013] In some embodiments, the netting on the bottom surface of the frame base is defined as a first netting;

[0014] The first netting is in the initial state, the two ends of the first netting in the length direction thereof are connected with the frame base;

[0015] The first netting is in the tension state, the two ends of the first netting in the length direction thereof and the two ends of the netting in the width direction thereof are connected with the frame base.

[0016] In some embodiments, the netting on the side surface of the frame base is defined as a second netting;

[0017] The second netting is in the initial state, the two ends of the second netting in the length direction thereof are connected with the frame base;

[0018] The second net is connected to the frame base at both ends in the length direction thereof in the tensioned state, the upper end in the width direction thereof is connected to the frame base, and the lower end in the width direction thereof is provided with a hanging piece and is in close contact with the frame base.

[0019] In some embodiments, the hanging piece has a plurality of the hanging pieces which are distributed along the length direction of the second net.

[0020] In some embodiments, both ends in the length direction of the net are respectively provided with a plurality of first sliding rings which are sleeved on the frame base.

[0021] In some embodiments, both ends in the width direction of the net on the bottom surface of the frame base are respectively provided with a plurality of second sliding rings which are sleeved on the frame base.

[0022] In some embodiments, the upper end in the width direction of the net on the side surface of the frame base is provided with a plurality of third sliding rings which are sleeved on the frame base.

[0023] In some embodiments, the size of the gap between the first sliding ring, the second sliding ring and the third sliding ring and the frame base is smaller than the size of the mesh of the net.

[0024] Embodiments of the present disclosure also propose a tensioning method of a mariculture net cage based on an offshore wind power foundation.

[0025] The tensioning method of the embodiments of the present disclosure is used in the mariculture net cage based on the offshore wind power foundation in any of the above embodiments, and the tensioning method comprises:

[0026] connecting both ends in the length direction of the net to the frame base;

[0027] stretching the net in the width direction thereof to contract the length of the net and elongate the width of the net;

[0028] after the contraction amount and the elongation amount reach the preset value, connecting both ends in the width direction of the net to the frame base. BRIEF DESCRIPTION OF DRAWINGS

[0029] FIG. 1 is a schematic view of a mariculture net cage based on an offshore wind power foundation according to an embodiment of the present disclosure.

[0030] FIG. 2 is a schematic view of a frame base according to an embodiment of the present disclosure.

[0031] Fig. 3 is a schematic view of the size ratio of the initial state of the netting and the frame foundation according to an embodiment of the present disclosure.

[0032] Fig. 4 is a schematic view of the initial state of the first netting according to an embodiment of the present disclosure.

[0033] Fig. 5 is a schematic view of the installation process of the first netting according to an embodiment of the present disclosure.

[0034] Fig. 6 is a schematic view of the tensioned state of the first netting according to an embodiment of the present disclosure.

[0035] Fig. 7 is a schematic view of the initial state of the second netting according to an embodiment of the present disclosure.

[0036] Fig. 8 is a schematic view of the installation process of the second netting according to an embodiment of the present disclosure.

[0037] Fig. 9 is a schematic view of the tensioned state of the second netting according to an embodiment of the present disclosure.

[0038] Reference signs: wind power foundation 100, mariculture net cage 200, frame foundation 11, netting 12, first netting 121, second netting 122, suspension 123, first sliding ring 124, second sliding ring 125, third sliding ring 126. DETAILED DESCRIPTION

[0039] Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present disclosure, and cannot be understood as a limitation of the present disclosure.

[0040] A mariculture net cage based on a wind power foundation according to an embodiment of the present disclosure is described below in conjunction with the accompanying drawings.

[0041] As shown in Fig. 1, the mariculture net cage 200 is designed in combination with the wind power foundation 100, and the mariculture net cage 200 is arranged in the jacket.

[0042] In the present disclosure, the mariculture net cage based on a wind power foundation includes a frame foundation 11, which is designed in shape according to the central space structure of the jacket, for example, the frame foundation 11 is in the shape of a square or a quadrangular prism.

[0043] In some embodiments, the frame foundation 11 is composed of a plurality of support rods connected to each other to form a space structure with each face being a quadrilateral, wherein the bottom face and the top face are square, and the four side faces are isosceles trapezoids.

[0044] The frame foundation 11 is provided with the netting 12 on the bottom face and the four side faces, and the netting 12 has an initial state and a tensioned state, the distance of the frame foundation 11 in the length direction of the netting 12 is L1, and the distance of the frame foundation 11 in the width direction of the netting 12 is L2.

[0045] It should be noted that the length direction and the width direction of the netting 12 on different faces of the frame base 11 are different. For example, the length direction of the netting 12 on the bottom face, the front side face and the rear side face of the frame base 11 refers to the left-right direction in the figure, and the length direction of the netting 12 on the left side face and the right side face of the frame base 11 refers to the front-rear direction in the figure. The width direction of the netting 12 on the bottom face of the frame base 11 refers to the front-rear direction in the figure, and the width direction of the netting 12 on the four side faces of the frame base 11 refers to the up-down direction in the figure.

[0046] For the convenience of description, the bottom face of the frame base 11 in the embodiments of the present disclosure is square, that is, the length of the left-right direction of the frame base 11 is the same as the width of the front-rear direction of the frame base 11.

[0047] As shown in FIGS. 4 and 7, the netting 12 is in an initial state, that is, the netting 12 has not been tensioned by force, and the left and right ends of the netting 12 are connected with the frame base 11. For the convenience of illustration, the netting 12 in the figure is in an unfolded state to highlight the difference between the length of the netting 12 and the length of the frame base 11. It can be understood by those skilled in the art that connection refers to the connection or contact between objects.

[0048] Taking the netting 12 on the bottom face of the frame base 11 as an example, as shown in FIG. 3, the distance between the left and right ends of the netting 12 is L d1 , L d1 is the original length of the netting 12, and L d1 =(1.05-1.1) L1, that is, the original length of the netting 12 is greater than the length of the frame base 11. The distance between the front and rear ends of the netting 12 is L d2 , L d2 is the original width of the netting 12, and L d2 =(0.9-0.95) L2, that is, the original width of the netting 12 on the bottom face of the frame base 11 is less than the width of the frame base 11. The netting 12 on other faces is the same as the above example, which is not described herein.

[0049] As shown in FIGS. 6 and 9, the netting 12 is in a tensioned state, that is, the netting 12 is tensioned to an appropriate degree, at this time, both the two ends of the netting 12 in the length direction and the two ends of the netting 12 in the width direction are connected with the frame base 11.

[0050] The distance between the two ends of the netting 12 in the length direction is L a1 , L a1 is the assembly length of the netting 12, and L a1 =L1. The distance between the two ends of the netting 12 in the width direction is L a2L a2 L is the assembly width of the netting 12, and L a2 = L2.

[0051] In other words, the netting 12 is stretched from the width direction of the netting 12 to shorten the length of the netting 12 to be consistent with the length of the frame base 11 and to elongate the width of the netting 12 to be consistent with the width of the frame base 11, so as to not only achieve the blocking effect on the surface of the frame base 11, but also achieve the tensioning effect on the netting 12.

[0052] In addition, by limiting the proportional relationship between L d1 and L1 and between L d2 and L2, the netting 12 is prevented from being broken from the initial state to the tensioning state, and the netting 12 is ensured to be tensioned to an appropriate degree, so as to achieve the expected breeding effect.

[0053] In some embodiments, the distance between the two ends of the netting 12 in the length direction of the netting 12 is shortened from L d1 to L a1 , and the shortened amount is defined as S. The distance between the two ends of the netting 12 in the width direction of the netting 12 is elongated from L d2 to L a2 , and the elongated amount is defined as E. The physical quantity related to the relationship between the shortened amount and the elongated amount is U, and U = S / E, U > 1.

[0054] It can be understood that after the netting 12 is uniaxially stretched, the wires or fibers parallel to the stretching direction are elongated, and the wires or fibers in the direction perpendicular to the stretching direction are shortened. The netting 12 of the embodiments of the present disclosure is made of an anisotropic material, for example, spandex or some composite materials. The elongated amount and the shortened amount in different directions are different, the elongated amount of the wires or fibers in the stretching direction is less than the shortened amount of the wires or fibers in the direction perpendicular to the stretching direction, so as to improve the stability of the stretching process and avoid the wires or fibers in the stretching direction from being excessively elongated and broken.

[0055] In some embodiments, as shown in FIGS. 4 to 6, the netting 12 on the bottom surface of the frame base 11 is defined as a first netting 121.

[0056] As shown in FIG. 4, the first netting 121 is in an initial state, and the left and right ends of the first netting 121 are connected to the frame base 11. As shown in FIG. 5, during installation, any one of the front and rear ends of the first netting 121 is first connected to the frame base 11. Then, as shown in FIG. 6, the other one of the front and rear ends of the first netting 121 is connected to the frame base 11. In this way, the first netting 121 blocks the bottom surface of the frame base 11.

[0057] As shown in FIGS. 7-9, the netting 12 on the side of the frame base 11 is defined as a second netting 122.

[0058] As shown in FIG. 7, the second netting 122 is in an initial state, with both ends of the second netting 122 connected to the frame base 11. As shown in FIG. 8, during installation, the upper end of the second netting 122 is connected to the frame base 11. Then, as shown in FIG. 9, a hanging piece 123 is provided at the lower end of the second netting 122 to ensure that the lower end of the second netting 122 is in close contact with the frame base 11. In this way, the second netting 122 seals the side of the frame base 11.

[0059] As shown in FIG. 9, the hanging piece 123 has multiple hanging pieces 123 spaced along the left-right direction, thereby serving as a uniform force application.

[0060] It can be understood that the lower end of the second netting 122 usually extends beyond the frame base 11 by a portion and is sealed by hanging a weight, the purpose of which is to make the side netting 12 have variability when subjected to sea wave fluctuations, thereby improving the service life of the netting 12.

[0061] In some embodiments, as shown in FIGS. 4-9, the netting 12 on the bottom surface and the four sides of the frame base 11 has multiple first sliding rings 124 at both ends in the length direction, respectively, and the first sliding rings 124 are sleeved on the frame base 11.

[0062] It can be understood that the netting 12 is connected to the frame base 11 through the first sliding ring 124, so that the netting 12 can slide relative to the frame base 11 during stretching, ensuring the effectiveness and rationality of the stretching.

[0063] In some embodiments, as shown in FIGS. 5 and 6, the netting 12 on the bottom surface of the frame base 11 has multiple second sliding rings 125 at the front and rear ends, respectively, and the second sliding rings 125 are sleeved on the frame base 11. As shown in FIGS. 8 and 9, the netting 12 on the side of the frame base 11 has multiple third sliding rings 126 at the upper end, and the third sliding rings 126 are sleeved on the frame base 11.

[0064] In this way, the sliding ring is a low-friction connecting piece that provides smooth movement between the netting 12 and the frame base 11, thereby reducing wear and damage and maintaining the stability and integrity of the structure. This is very important for the netting 12 that is used in the marine environment for a long time, because wear can cause damage to the netting 12, affecting its function and life.

[0065] The sliding rings allow the netting 12 to move freely within a certain range, which is very advantageous for the adjustment and maintenance of the culture net cage 200. For example, if the netting 12 needs to be adjusted or repaired after being tensioned, the sliding rings can conveniently move the netting 12 without the need to disassemble the entire net cage structure. Moreover, the netting 12 can also have a certain space for movement when affected by changes in sea currents, thereby reducing damage caused by stress concentration and prolonging the service life.

[0066] In addition, the gap sizes between the first sliding ring 124, the second sliding ring 125, the third sliding ring 126 and the frame base 11 are smaller than the mesh sizes of the netting 12, so as to avoid fish escaping from the culture net cage 200 through the gaps.

[0067] The tensioning method of the culture net cage based on the offshore wind power foundation according to the embodiments of the present disclosure will be described below in combination with the drawings.

[0068] The tensioning method of the present disclosure is used in the culture net cage based on the offshore wind power foundation in any of the above embodiments, and the tensioning method comprises:

[0069] As shown in FIGS. 4-6, for the netting 12 on the bottom surface of the frame base 11, first, the left and right ends of the netting 12 are connected to the frame base 11 through sliding rings, and then the netting 12 is stretched in the front-back direction, so that the length of the netting 12 is contracted and the width of the netting 12 is elongated. When the contraction and elongation reach the preset values, the front and rear ends of the netting 12 are connected to the frame base 11 through sliding rings.

[0070] Similarly, as shown in FIGS. 7-9, for the netting 12 on the side surface of the frame base 11, first, the left and right ends of the netting 12 are connected to the frame base 11 through sliding rings, and then the netting 12 is stretched in the up-down direction, so that the length of the netting 12 is contracted and the width of the netting 12 is elongated. When the contraction and elongation reach the preset values, the upper end of the netting 12 is connected to the frame base 11 through a sliding ring, and the lower end of the netting 12 is hung with a weight.

[0071] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure.

[0072] In addition, the terms "first", "second", "third", etc. are used herein only to describe different instances, and do not imply a relative importance or a specific number of the technical features. Thus, the features defined with "first", "second", etc. can include at least one of the features explicitly or implicitly. In the description of the present disclosure, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0073] In the present disclosure, unless explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection or communication with each other; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0074] In the present disclosure, unless explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0075] In the present disclosure, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification and the features of different embodiments or examples, without contradiction.

[0076] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present disclosure, and the changes, modifications, replacements and variations of the above embodiments made by those skilled in the art are within the protection scope of the present disclosure.

[0077] All embodiments of the present disclosure can be performed independently, or in combination with other embodiments, and are all considered to be within the scope of protection required by the present disclosure.

Claims

1. A farming net cage based on an offshore wind power foundation, characterized in that, The frame foundation is provided with a mesh on its bottom surface and side surfaces, the mesh has an initial state and a tension state, the distance of the frame foundation in the length direction of the mesh is L1, and the distance of the frame foundation in the width direction of the mesh is L2. The netting in the initial state, two ends of the netting in its length direction are connected with the frame base, the distance between the two ends of the netting in its length direction is L d1 , L d1 is the original length of the netting, and L d1 =(1.05-1.1)L1, the distance between two ends of the netting in its width direction is L d2 , L d2 is the original width of the netting, and L d2 =(0.9-0.95)L2 ; In the tensioned state, both ends of the netting in the length direction and both ends of the netting in the width direction are connected to the frame base, the distance between the two ends of the netting in the length direction is L a1 , L a1 is the fitted length of the netting, and L a1 =L1 , the distance between the two ends of the netting in the width direction is L a2 , L a2 is the fitted width of the netting, and L a2 =L2.

2. A farming net cage based on an offshore wind power foundation according to claim 1, characterized in that, The distance between the two ends of the net in the length direction thereof is shortened from L d1 to L a1 , the amount of shortening being defined as S, the distance between the two ends of the net in the width direction thereof is elongated from L d2 to L a2 , the amount of elongation being defined as E, the physical quantity relating between the amount of shortening and the amount of elongation being U, and U=S / E, U>1.

3. A farming net cage based on an offshore wind power foundation according to claim 2, characterized in that, The mesh on the bottom surface of the frame foundation is defined as a first mesh. In the initial state, the two ends of the first mesh in the length direction thereof are connected with the frame foundation. In the tension state, the two ends of the first mesh in the length direction thereof and the two ends of the mesh in the width direction thereof are connected with the frame foundation.

4. A farming net cage based on an offshore wind power foundation according to claim 2, characterized in that, The mesh on the side surface of the frame foundation is defined as a second mesh. In the initial state, the two ends of the second mesh in the length direction thereof are connected with the frame foundation. In the tension state, the two ends of the second mesh in the length direction thereof are connected with the frame foundation, the upper end of the second mesh in the width direction thereof is connected with the frame foundation, the lower end of the second mesh in the width direction thereof is provided with a hanging piece, and the lower end of the second mesh in the width direction thereof is in close contact with the frame foundation.

5. A farming net cage based on an offshore wind power foundation according to claim 4, characterized in that, The hanging piece has a plurality of hanging pieces, and the plurality of hanging pieces are distributed along the length direction of the second mesh.

6. A farming net cage based on an offshore wind power foundation according to any of claims 1 to 5, characterized in that, The two ends of the mesh in the length direction thereof are respectively provided with a plurality of first sliding rings, and the first sliding rings are sleeved on the frame foundation.

7. A farming net cage based on an offshore wind power foundation according to claim 6, characterized in that, The two ends of the mesh on the bottom surface of the frame foundation in the width direction thereof are respectively provided with a plurality of second sliding rings, and the second sliding rings are sleeved on the frame foundation.

8. A farming net cage based on an offshore wind power foundation according to claim 7, characterized in that, The upper end of the mesh on the side surface of the frame foundation in the width direction thereof is provided with a plurality of third sliding rings, and the third sliding rings are sleeved on the frame foundation.

9. A farming net cage based on an offshore wind power foundation according to claim 8, characterized in that, The gap size between the first sliding ring, the second sliding ring and the third sliding ring and the frame foundation is smaller than the mesh size of the mesh.

10. A method of tensioning a farming net cage based on an offshore wind power foundation, characterized in that, The tension method is used for the offshore wind power foundation-based culture net cage according to any one of claims 1 to 9, and the tension method comprises: connecting the two ends of the mesh in the length direction thereof with the frame foundation; stretching the mesh in the width direction thereof so as to contract the length of the mesh and elongate the width of the mesh; after the contraction amount and the elongation amount reach a preset value, connecting the two ends of the mesh in the width direction thereof with the frame foundation.

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