Sea grass cultivation device
By designing a seagrass cultivation device, using an outer shell and isolation net to protect the seagrass seeds, and combining it with counterweights to adjust the center of gravity, the problem of low survival rate of seagrass seeds around offshore wind turbine foundations was solved, achieving efficient seagrass cultivation and ecological protection.
Patent Information
- Application Number
- CN202423157803.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Seagrass seeds have a low survival rate around offshore wind turbine foundations. Existing planting methods are poorly compatible with soil stabilization construction, resulting in a low survival rate.
Design a seagrass cultivation device, including an outer shell, a counterweight, and an isolation net. The outer shell and isolation net protect the seagrass seeds from being washed away during the construction of the solidified soil, and the counterweight is used to adjust the center of gravity to ensure the stability of the device and improve the survival rate of the seagrass seeds.
It improved the survival rate of seagrass seeds, enhanced the adaptability of solidified soil protection construction, promoted the healthy development of marine ecosystems, and reduced environmental pollution.
Smart Images
Figure CN223613897U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the fields of scour protection for offshore wind turbine foundations and seaweed cultivation technology, and in particular to a seaweed cultivation device. Background Technology
[0002] After offshore wind turbines are built, the combined effects of waves and tides cause localized scouring of the soil around the turbine foundations, reducing the pile depth and directly impacting the pile bearing capacity and structural vibration frequency. Among existing offshore wind turbine scouring technologies, silt-stabilized soil protection has been proven effective in reducing the depth of localized scouring around the piles. Furthermore, arranging biomimetic aquatic plants around the piles to reduce pre-pile downflow and post-pile wake vortices has also been shown on a laboratory scale to reduce the depth of localized scouring; simultaneously, it enhances the ecological nature of the stabilized soil protection for offshore wind turbine foundations, improving its protective effect.
[0003] Seaweed seeds are small in weight and size, making them easy to float with the current. Direct sowing results in a low survival rate. Generally, they need to be planted in burlap sacks to form a grid (burlap sack) or prepared into mud balls (mud ball method) to improve the survival rate. However, these methods are not well-suited for solidified soil construction and have a low survival rate. Utility Model Content
[0004] The purpose of this invention is to provide a seaweed cultivation device that improves its compatibility with solidified soil construction and increases the survival rate of seaweed.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] Seagrass cultivation device, which includes:
[0007] The outer shell includes a first half-shell and a second half-shell, which are detachably connected, and both the first half-shell and the second half-shell are provided with through holes;
[0008] A counterweight, which is fixed to the second half-shell;
[0009] An isolation net is provided inside both the first and second half-shells to at least cover the through-holes; the isolation net is configured to be pushed away from the outer shell by the seedlings inside the outer shell.
[0010] In some embodiments, the first half-shell and the second half-shell are plugged into each other.
[0011] In some embodiments, multiple through holes are provided on both the first half-shell and the second half-shell.
[0012] In some embodiments, the outer shell and / or the isolation mesh are made of a biodegradable material.
[0013] In some embodiments, the isolation net is made of jute fiber geotextile or kenaf fiber geotextile; and / or, the outer shell is made of starch-based plastic.
[0014] In some embodiments, the isolation net is bonded to the outer shell.
[0015] In some embodiments, multiple counterweights are provided, and the multiple counterweights are arranged circumferentially around the center of the bottom of the second half-shell.
[0016] In some embodiments, the housing is further provided with a connection hole, through which a connecting rope can pass to connect multiple housings.
[0017] In some embodiments, the connection hole is located on the second half-shell.
[0018] In some embodiments, the connecting rope is made from the rhizomes of beach plants.
[0019] The beneficial effects of this utility model are:
[0020] Throughout the entire process of soil stabilization protection construction, seaweed pellets are protected. Through the outer shell and isolation net, seaweed seeds can be pumped to the scour pit along with the stabilization mortar. By adjusting the center of gravity with counterweights, the entire device is less likely to be washed away by the downflow and vortex system in front of the pile when the stabilization mortar flows and distributes, and the orientation of the device can be maintained as much as possible, which is conducive to seaweed germination and growth. This improves the compatibility between the seaweed pellet planting method and soil stabilization protection construction, and increases the survival rate of seaweed around the pile foundation. Attached Figure Description
[0021] Figure 1 This is an exploded view of the outer shell of this utility model;
[0022] Figure 2 This is an exploded view of the outer shell, counterweight, mud pellets, and slow-release fertilizer in this utility model.
[0023] Figure 3 This is a schematic diagram of the connecting rope connecting multiple shells in this utility model.
[0024] In the picture:
[0025] 1. Outer shell; 11. First half-shell; 12. Second half-shell; 13. Through hole; 14. Connecting hole;
[0026] 2. Counterweight;
[0027] 3. Isolation netting;
[0028] 4. Connecting rope;
[0029] 5. Mud balls;
[0030] 6. Slow-release fertilizer. Detailed Implementation
[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0034] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0035] like Figures 1 to 3As shown, this application provides a seagrass cultivation device for planting and cultivating seagrass on solidified soil for offshore wind turbine foundations, and it can also be used for seagrass cultivation on seabed substrates in other areas. The seagrass cultivation device includes an outer shell 1, a counterweight 2, and an isolation net 3. The outer shell 1 includes a first half-shell 11 and a second half-shell 12, which are detachably connected to form a complete outer shell 1. Both the first half-shell 11 and the second half-shell 12 are provided with through holes 13, and the counterweight 2 is fixed to the second half-shell 12. Isolation nets 3 are provided inside both the first half-shell 11 and the second half-shell 12 to at least cover the through holes 13. The isolation nets 3 are configured to be able to be pushed away from the outer shell 1 by the seedlings inside the outer shell 1.
[0036] In use, mud pellets 5 (mud pellets 5 are existing technology) mixed with seaweed seeds and slow-release fertilizer 6 can be placed inside the second half-shell 12, and the first half-shell 11 and the second half-shell 12 can be combined. Then, at the end of the solidification mortar mixing and pumping, multiple shells 1 containing seaweed seeds are pumped together with the solidification mortar to the vicinity of the offshore wind turbine foundation. When the solidification mortar flows and distributes, the whole structure is not easily washed away by the downflow and vortex system in front of the pile. Furthermore, the shells 1 can protect the mud pellets 5 during pumping, and the isolation net 3 can prevent large particles from being washed away. Foreign objects enter the outer shell 1, and the internal mud balls 5 are prevented from detaching from the through hole 13 during pumping. The center of gravity is adjusted by the counterweight 2 to ensure that the through hole 13 of the second half shell 12 faces downward as much as possible, so that it is not easily washed away by seawater and facilitates the growth of seedling roots. The through hole 13 of the first half shell 11 is kept facing upward as much as possible to facilitate the growth of seedling leaves. After the roots and leaves of the seedlings have grown, they only need to be supported against the isolation net 3 soaked in seawater. Thus, the above device improves the compatibility with the construction of solidified soil and increases the survival rate of seagrass.
[0037] like Figure 1 As shown, in some embodiments, the first half-shell 11 and the second half-shell 12 are connected by a plug-in joint. One of the first half-shell 11 and the second half-shell 12 has a plug-in boss, thereby achieving the plug-in connection between the first half-shell 11 and the second half-shell 12 through the plug-in boss and the other half-shell 12. The plug-in connection of the first half-shell 11 and the second half-shell 12 can make the surface smoother and reduce the possibility of external interference. For example, the outer shell 1 is oval-shaped. In other embodiments, the first half-shell 11 and the second half-shell 12 can also be connected by other detachable connection methods such as bonding or screwing.
[0038] like Figure 1 and Figure 2As shown, in some embodiments, multiple through holes 13 are provided on both the first half-shell 11 and the second half-shell 12, thereby further increasing the probability of root and leaf extension and promoting seagrass growth. In the current embodiment, multiple through holes 13 are respectively arranged circumferentially around the top center of the first half-shell 11 and the bottom center of the second half-shell 12, optimizing the distribution space.
[0039] In some embodiments, an isolation net 3 is provided inside both the first half-shell 11 and the second half-shell 12, and each isolation net 3 covers multiple through holes 13 located on the first half-shell 11 and the second half-shell 12. Exemplarily, the isolation net 3 is bonded or snapped to the inner wall of the outer shell 1. Exemplarily, the isolation net 3 is made of jute fiber geotextile or kenaf fiber geotextile bonded to the inner shell 1. Both are biodegradable materials in the seawater environment, have a certain strength before degradation, and are low-cost and environmentally friendly. After a certain period of root and leaf growth, the isolation net 3 has softened and initially degraded, and the roots and leaves can push it out of the outer shell 1, allowing it to continue degrading and preventing pollution of the marine environment. Similarly, the outer shell 1 is also made of biodegradable materials; exemplarily, the outer shell 1 is made of starch-based plastic. It is understood that the isolation net 3 and the outer shell 1 can also be made of other biodegradable materials. The use of the above-mentioned biodegradable materials can enhance the ecological nature of the soil stabilization protection process. Combined with soil stabilization construction, seagrass can be quickly sown in offshore wind farm areas for ecological protection and restoration, promoting the health and improvement of the marine ecosystem and carbon sequestration.
[0040] like Figure 2 As shown, in some embodiments, multiple counterweights 2 are provided, and the multiple counterweights 2 are arranged circumferentially around the bottom center of the second half-shell 12. To further optimize space, the counterweights 2 are annular blocks, and the multiple counterweights 2 are arranged corresponding to the through holes 13 on the second half-shell 12. The counterweights 2 are arranged around the outer periphery of the through holes 13. The use of the above-mentioned annular blocks can further optimize space and facilitate the placement of the counterweights 2. Exemplarily, the inner shell wall of the second half-shell 12 is provided with a groove around the outer periphery of the through holes 13, and the counterweights 2 can be embedded in the groove for fixation. In other embodiments, the counterweights 2 can also be glued to the inner shell wall of the second half-shell 12. Exemplarily, the counterweights 2 are uniformly sized stone blocks.
[0041] like Figures 1 to 3As shown, in some embodiments, the outer shell 1 is also provided with connecting holes 14. Connecting ropes 4 can pass through the connecting holes 14 to connect multiple outer shells 1, thereby forming a mesh group of multiple outer shells 1, which can improve stability and further prevent them from being washed away by seawater currents. In addition, the connecting ropes 4 can also pass through the isolation net 3 to improve the stability of the isolation net 3 before degradation. This also improves the scour protection effect. In areas with strong water flow, multiple outer shells 1 can be connected and grouped through the connecting ropes 4 and pumped along with the solidified soil mortar. During startup, the connected and grouped outer shells 1 will still be entangled and attached to the pile foundation. This allows seaweed to sprout near the pile foundation area, using its root system to reinforce the connection between the solidified soil and the in-situ soil, enhancing the durability of the solidified soil. The seaweed leaves reduce the downflow before pile installation and the degree of wake vortex after pile installation, improving scour resistance.
[0042] Furthermore, the connecting hole 14 is located on the second half-shell 12, thereby ensuring that the center of gravity of the entire device remains on the second half-shell 12, further stabilizing it. Exemplarily, three connecting holes 14 can be provided on each outer shell 1. Further, to reduce pollution, the connecting rope 4 is made from the roots and stems of riparian plants. For example, the connecting rope 4 can be prefabricated by twisting together the large quantities of discarded Spartina alterniflora roots and stems generated during riparian restoration, allowing it to degrade and avoid polluting the marine environment. It should be noted that when the connecting rope 4 passes through the connecting hole 14, it can penetrate any protective netting that might cover the connecting hole 14, filling it completely and further reducing the possibility of debris entering or exiting through the connecting hole 14.
[0043] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A seaweed cultivation device, characterized in that, include: The outer shell (1) includes a first half shell (11) and a second half shell (12), the first half shell (11) and the second half shell (12) are detachably connected, and both the first half shell (11) and the second half shell (12) are provided with through holes (13); Counterweight (2), which is fixed to the second half-shell (12); An isolation net (3) is provided inside the first half-shell (11) and the second half-shell (12) to at least cover the through hole (13). The isolation net (3) is configured to be able to be pushed away from the outer shell (1) by the seedling inside the outer shell (1).
2. The seaweed cultivation device according to claim 1, characterized in that, The first half-shell (11) is inserted into the second half-shell (12).
3. The seaweed cultivation device according to claim 1, characterized in that, Multiple through holes (13) are provided on the first half shell (11) and the second half shell (12).
4. The seaweed cultivation device according to claim 1, characterized in that, The outer shell (1) and / or the isolation net (3) are made of biodegradable materials.
5. The seaweed cultivation device according to claim 4, characterized in that, The isolation net (3) is made of jute fiber geotextile or kenaf fiber geotextile; and / or the outer shell (1) is made of starch-based plastic.
6. The seaweed cultivation device according to claim 1, characterized in that, The isolation net (3) is bonded to the outer shell (1).
7. The seaweed cultivation device according to claim 3, characterized in that, Multiple counterweights (2) are provided, and the multiple counterweights (2) are arranged circumferentially around the bottom center of the second half shell (12).
8. The seagrass cultivation device according to any one of claims 1-7, characterized in that, The outer shell (1) is also provided with a connection hole (14), and the connecting rope (4) can pass through the connection hole (14) to connect multiple outer shells (1).
9. The seaweed cultivation device according to claim 8, characterized in that, The connection hole (14) is located on the second half shell (12).
10. The seaweed cultivation device according to claim 8, characterized in that, The connecting rope (4) is made from the roots and stems of beach plants.