Anti-scouring device for submarine pipe cable

Abstract

The utility model provides a submarine pipe cable anti-scour device including a pipe cable, a plurality of first protection devices and a plurality of second protection devices, the pipe cable is suitable for being laid in the seabed, the first protection devices are suitable for being arranged in a seabed area with a first flow rate, the first protection devices are arranged on the pipe cable, and the second protection devices are arranged on the pipe cable. The first protection device comprises a plurality of first protection parts and a second protection part, the plurality of first protection parts are special-shaped blocks and are stacked on the pipe cable, the second protection part is arranged on one side of the plurality of first protection parts, the second protection device is suitable for being arranged in a seabed area with a second flow speed, and the second protection device is arranged on the pipe cable; the second protection device comprises a plurality of third protection parts and a plurality of fourth protection parts, the third protection parts are made of flexible materials and evenly distributed on the pipe cable, and the fourth protection parts are special-shaped blocks and stacked on the two sides of the third protection parts. According to the utility model, the scouring effect around the pipe cable can be effectively slowed down, the construction difficulty and the material requirement are reduced, and meanwhile, wide engineering applicability and high efficiency are achieved.

Description

Technical Field

[0001] This utility model relates to the field of marine engineering technology, and in particular to an anti-scouring device for submarine pipelines and cables. Background Technology

[0002] During the laying and operation of submarine pipelines and cables, the tidal currents and waves in the marine environment can easily trigger scouring effects around the pipelines and cables, posing a serious threat to their safety and stability. Commonly used anti-scouring technologies include sandbags and interlocking soft concrete blocks, but these methods have significant drawbacks: sandbag stacking requires extremely high precision, consuming a large amount of manpower and time, resulting in low construction efficiency; while interlocking soft concrete blocks are scour-resistant, they are easily overturned in strong hydrodynamic environments, limiting their protective effect. Utility Model Content

[0003] Therefore, it is necessary to provide a highly efficient, adaptable, and cost-effective erosion prevention device to address the current problems of low construction efficiency and limited protective effect.

[0004] The above objective is achieved through the following technical solution: a submarine cable anti-scouring device, comprising: a cable adapted to be laid on the seabed; a first protective device adapted to be disposed in a seabed area with a first current velocity, the first protective device being disposed on the cable, the first protective device comprising a plurality of first protective components and second protective components, the plurality of first protective components being irregularly shaped blocks stacked on the cable so that the first protective components form a protective layer on the outer periphery of the cable, and the second protective components being disposed on one side of the plurality of first protective components, the second protective components being used to reduce local scouring around the second protective components. The first flow velocity is less than the second flow velocity. The second protective device is installed on the pipeline. The second protective device includes multiple third protective components and multiple fourth protective components. The third protective components are made of flexible material and are evenly distributed on the pipeline so that the third protective components form a protective layer on the outer periphery of the pipeline. The fourth protective components are irregularly shaped blocks and are stacked on both sides of the third protective components. The fourth protective components are used to reduce the hydrodynamic load around the third protective components to prevent the third protective components from being overturned.

[0005] The submarine cable anti-scouring device of this utility model protects the cable with a first protective device and a second protective device, ensuring the safety of the cable. The first and second protective devices are set according to different flow velocities, which not only ensures the protective effect, but also avoids the waste of resources caused by over-protection, reduces labor costs and construction time, and improves construction efficiency.

[0006] In one embodiment, the first protective member has a first flow-disrupting portion, and the fourth protective member has a second flow-disrupting portion. One of the first flow-disrupting portion and the second flow-disrupting portion is either a protrusion or a groove. Both the first flow-disrupting portion and the second flow-disrupting portion are used to disrupt the water flow around the pipe to disrupt the continuity of the water flow.

[0007] In one embodiment, there are multiple first flow-dispersing portions, which are disposed on the outer peripheral surface of the first protective member and spaced apart circumferentially along the first protective member; and / or, there are multiple second flow-dispersing portions, which are disposed on the outer peripheral surface of the fourth protective member and spaced apart circumferentially along the second protective member.

[0008] In one embodiment, at least one of the first protective member and the fourth protective member is any one of the following: anvil-shaped, three-block-shaped, hollow tetrahedral, and three-column-shaped.

[0009] In one embodiment, the second protective component includes a first protective unit and a second protective unit, which are respectively disposed on both sides of the first protective component and are arranged opposite to each other at a radial distance along the cable. Both the first protective unit and the second protective unit are used to reduce the local flow velocity on both sides of the cable.

[0010] In one embodiment, both the first protective unit and the second protective unit include a first protective post, a second protective post, a third protective post, and a fourth protective post. The fourth protective post extends vertically, and the first, second, and third protective posts extend horizontally and are circumferentially spaced around the fourth protective post. One end of each of the first, second, and third protective posts is connected to the fourth protective post, and the first protective member is located between the first and second protective posts.

[0011] In one embodiment, the angle between the extension direction of the first protective post and the extension direction of the second protective post is 120°-180°. The first protective post extends away from the second protective post and is inclined toward the direction adjacent to the first protective member. The second protective post extends away from the first protective post and is inclined toward the direction adjacent to the first protective member.

[0012] In one embodiment, a plurality of the third protective members are arranged in multiple rows at axial intervals along the cable, each row including a plurality of third protective members arranged at radial intervals along the cable, so that the third protective members form a protective layer on the outer periphery of the cable.

[0013] In one embodiment, the fourth protective element includes a plurality of third protective units and a plurality of fourth protective units, with the plurality of third protective units stacked on one side of the third protective element and the plurality of fourth protective units stacked on the other side of the third protective element.

[0014] In one embodiment, the submarine cable anti-scouring device further includes a detection component located on one side of the cable, the detection component being used to detect the position of the first protective device or the second protective device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the installation of the submarine cable anti-scouring device and the first protective device according to an embodiment of the present invention.

[0016] Figure 2 This is a top view of the first protective device of the submarine cable anti-erosion device according to an embodiment of the present invention.

[0017] Figure 3 This is a front view of the first protective device of the submarine cable anti-erosion device according to an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of the second protective component of the submarine cable anti-erosion device according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the installation of the submarine cable anti-scouring device and the second protective device according to an embodiment of the present invention.

[0020] Figure 6 This is a schematic diagram of the structure of the first protective device of the submarine cable anti-erosion device according to an embodiment of the present invention;

[0021] Figure 7 This is a schematic diagram of the structure of the first protective component of the submarine cable anti-erosion device according to an embodiment of the present invention.

[0022] in:

[0023] 100. Submarine cable anti-erosion device; 1. Cable; 2. First protective device; 21. First protective component; 211. Anvil-shaped; 212. Three-block-shaped; 213. Hollow tetrahedral shape; 214. Three-column shape; 22. Second protective component; 221. First protective unit; 2211. First protective column; 2212. Second protective column; 2213. Third protective column; 2214. Fourth protective column; 222. Second protective unit; 3. Second protective device; 31. Third protective component; 32. Fourth protective component; 321. Third protective unit; 322. Fourth protective unit. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely for distinguishing the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this utility model, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, 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.

[0026] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] like Figures 1-7 As shown, the submarine cable anti-scouring device 100 of this utility model embodiment includes a cable 1, a first protective device 2, and a second protective device 3.

[0028] The cable 1 is suitable for being laid on the seabed, and the first protective device 2 is suitable for being installed in the seabed area with the first flow velocity. The first protective device 2 is installed on the cable 1. The first protective device 2 includes multiple first protective components 21 and second protective components 22. The multiple first protective components 21 are irregularly shaped blocks and are stacked on the cable 1 so that the first protective components 21 form a protective layer on the outer periphery of the cable 1. The second protective component 22 is installed on one side of the multiple first protective components 21. The second protective component 22 is used to reduce the local flow velocity around the second protective component 22 to form a stable flow field.

[0029] Specifically, such as Figures 1-4As shown, the cable 1 extends along the front-to-back direction and is located on the seabed. The first flow velocity is a medium-low flow velocity. The first protective device 2 is located in the seabed area with a medium-low flow velocity. The first protective device 2 is located on the outer periphery of the cable 1. The first protective component 21 is an irregularly shaped block and is stacked on the outer periphery of the cable 1. The first protective component 21 is used to turbulent the flow and reduce the local flow velocity around the cable 1, so that the first protective component 21 forms a protective layer on the outer periphery of the cable 1. The second protective component 22 is located on the left and right sides of the first protective component 21. The second protective component 22 can reduce the local flow velocity around the second protective component 22 to form a stable flow field, prevent multiple first protective components 21 from being washed away and displaced by seawater, and ensure the protective performance of the first protective component 21.

[0030] Because the first protective component 21 is designed to be directly stacked on the cable 1, it has significant advantages over the sandbag stacking method used in traditional related technologies. Firstly, in terms of construction technology, the first protective component 21 has relatively lower requirements for construction precision, eliminating the need for strict control over the placement and stacking angle of each sandbag as in sandbag stacking, thus reducing construction difficulty. Secondly, direct stacking significantly reduces the complexity of manual operation, effectively reducing labor costs, shortening the construction cycle, and greatly improving project efficiency. Furthermore, in low to medium hydrodynamic environments, the scouring force of the water flow on the cable 1 is relatively small. Therefore, by using the first protective component 21 to reduce the local water flow energy in the seawater, it can effectively protect the cable 1 from scouring damage and maintain a long-term protective effect. Therefore, the first protective device 2 is suitable for deployment in low-velocity waters.

[0031] The second protective device 3 is suitable for installation in the seabed area with a second current velocity, where the first current velocity is less than the second current velocity. All second protective devices 3 are installed on the cable 1. Each second protective device 3 includes multiple third protective elements 31 and multiple fourth protective elements 32. The third protective elements 31 are made of flexible material and are evenly distributed on the cable 1 to form a protective layer on the outer periphery of the cable 1. The fourth protective elements 32 are irregularly shaped blocks stacked on both sides of the third protective elements 31. The fourth protective elements 32 are used to reduce the hydrodynamic load around the third protective elements 31 to prevent them from being overturned. Specifically, as... Figure 5 and Figure 6As shown, the second flow velocity is a high flow velocity. The second protective device 3 is set in the seabed area with a high flow velocity. Multiple second protective devices 3 are spaced apart in the left and right direction. The third protective component 31 is made of a flexible material, such as concrete. The third protective components 31 are evenly distributed outside the pipe cable 1, thereby forming a stable protective layer on the outer periphery of the pipe cable 1 to absorb the impact energy of the water flow. The fourth protective component 32 is an irregularly shaped block. Parts of multiple fourth protective components 32 are stacked on the front side of the third protective component 31, and other parts of multiple fourth protective components 32 are stacked on the rear side of the third protective component 31. Thus, multiple fourth protective components 32 weaken the hydrodynamic load around the third protective component 31 to prevent the third protective component 31 from being overturned. In addition, under the action of the water flow, the fourth protective components 32 can roll and rearrange to ensure that they maintain their protective effect.

[0032] Although the third protective component 31 needs to be evenly arranged along the outer periphery of the cable 1, and multiple fourth protective components 32 need to be stacked in a stacked manner at the front and rear axial positions of the third protective component 31, this multi-layer composite protective structure significantly increases the amount of material used and installation time, resulting in a higher overall construction cost of the second protective device 3. However, the third protective component 31, made of flexible polymer material, can effectively absorb and dissipate the impact kinetic energy of the water flow on the outer periphery of the cable 1. The stacked arrangement of the fourth protective components 32 weakens the hydrodynamic load around the third protective component 31 to prevent the third protective component 31 from being overturned, further ensuring the protective performance of the third protective component 31. Thus, the combination of the third protective component 31 and the fourth protective component 32 gives the second protective device 3 stronger impact resistance and dynamic stability, making the second protective device 3 suitable for deployment in high-velocity waters.

[0033] The submarine cable anti-scouring device 100 of this utility model is specifically designed based on the hydrodynamic characteristics of the seabed area. In the seabed area with low to medium flow velocity, a first protective device 2 is set up. The first protective device 2 forms a stable disturbance protection layer by stacking and combining first protective components 21. In the seabed area with high flow velocity, a second protective device 3 is set up. The second protective device 3 effectively absorbs and dissipates the impact kinetic energy of the water flow on the outer periphery of the cable 1 through a third protective component 31, and weakens the hydrodynamic load around the third protective component 31 through a fourth protective component 32 to ensure the protective performance of the third protective component 31. Thus, the first protective device 2 and the second protective device 3 not only ensure the protective effect, but also avoid the waste of resources caused by over-protection, reduce labor costs and construction time, and improve construction efficiency.

[0034] In some embodiments, the first protective member 21 has a first flow-disrupting portion, and the fourth protective member 32 has a second flow-disrupting portion. One of the first and second flow-disrupting portions is either a protrusion or a groove. Both the first and second flow-disrupting portions are used to disrupt the water flow around the cable 1 to break the continuity of the water flow. Specifically, as... Figures 1-7 As shown, the protrusion can be a semi-circular, trapezoidal, or triangular cross-section, and the groove can be a semi-circular, trapezoidal, or triangular groove. This allows adjacent first protective members 21 and adjacent fourth protective members 32 to achieve mechanical engagement through the convex-concave fit of the flow-disrupting part, thereby enhancing the stability of the overall structure of multiple first protective members 21 and multiple fourth protective members 32, improving the protective performance of the first protective members 21 and the fourth protective members 32, and the protrusion and groove can disrupt the continuity of water flow around the pipeline, reduce the local flow velocity, and reduce the direct impact of water flow on the pipeline.

[0035] In some embodiments, there are multiple first flow-dispersing portions, which are disposed on the outer peripheral surface of the first protective member 21 and spaced apart circumferentially along the first protective member 21; and / or, there are multiple second flow-dispersing portions, which are disposed on the outer peripheral surface of the fourth protective member 32 and spaced apart circumferentially along the second protective member 22. Thus, the multiple first flow-dispersing portions improve the flow-dispersing performance, flow-dispersing performance, and protective performance of the first protective member 21, and the multiple second flow-dispersing portions improve the flow-dispersing performance, flow-dispersing performance, and protective performance of the fourth protective member 32.

[0036] In some embodiments, at least one of the first protective member 21 and the fourth protective member 32 is any one of the following: anvil-shaped 211, three-block-shaped 212, hollow tetrahedral 213, and three-column-shaped 214. Specifically, as Figure 7As shown, the first protective component 21 and the second protective component 22 can be configured according to actual conditions. For example, the first protective component 21 and the fourth protective component 32 include a body, with protrusions at both the upper and lower ends of the body, so that the first protective component 21 and the fourth protective component 32 are anvil-shaped 211; or, the first protective component 21 and the fourth protective component 32 include a connecting shaft, multiple first connecting blocks, and multiple second connecting blocks, with the multiple first connecting blocks spaced circumferentially at one end of the connecting shaft, and the multiple second connecting blocks spaced circumferentially at the other end of the connecting shaft, so that the first protective component 21 and the fourth protective component 32 are three-block shaped 212; or, the first protective component 21 and the fourth protective component 32 are three-block shaped 212. The first protective component 21 and the fourth protective component 32 are tetrahedrals, and the tetrahedrals are provided with grooves, so that the first protective component 21 and the fourth protective component 32 are hollow tetrahedrals 213. Alternatively, the first protective component 21 and the fourth protective component 32 include a connector and three columnar bodies. The three columnar bodies are spaced apart along the circumference of the connector and connected to the connector, so that the first protective component 21 and the fourth protective component 32 are three columnar bodies 214. Thus, through the arrangement of the first protective component 21 and the fourth protective component 32, the first protective component 21 and the fourth protective component 32 are stably stacked, effectively dispersing the impact of water flow and ensuring the protective efficiency of the first protective component 21 and the fourth protective component 32.

[0037] In some embodiments, the second protective member 22 includes a first protective unit 221 and a second protective unit 222. The first protective unit 221 and the second protective unit 222 are respectively disposed on both sides of the first protective member 21 and are arranged opposite to each other at a radial distance along the cable 1. Both the first protective unit 221 and the second protective unit 222 are used to reduce the local flow velocity on both sides of the cable 1. Specifically, as shown in... Figures 1-3 As shown, the first protective unit 221 is located on the front side of the first protective member 21, and the second protective unit 222 is located on the rear side of the first protective member 21. Thus, the first protective unit 221 and the second protective unit 222 protect the front and rear sides of the first protective member 21, reduce the local flow velocity on the front and rear sides of the first protective member 21, ensure that multiple first protective members 21 are stably stacked, and prevent multiple first protective members 21 from being blown away by seawater.

[0038] In some embodiments, both the first protective unit 221 and the second protective unit 222 include a first protective post 2211, a second protective post 2212, a third protective post 2213, and a fourth protective post 2214. The fourth protective post 2214 extends vertically, while the first protective post 2211, the second protective post 2212, and the third protective post 2213 extend horizontally and are circumferentially spaced around the fourth protective post 2214. One end of each of the first protective post 2211, the second protective post 2212, and the third protective post 2213 is connected to the fourth protective post 2214. The first protective member 21 is located between the first protective post 2211 and the second protective post 2212. Specifically, as shown... Figure 1 — Figure 4 As shown, the fourth protective column 2214 is a vertical column extending vertically, while the first protective column 2211, the second protective column 2212, and the third protective column 2213 are all horizontal columns extending horizontally. The first protective column 2211, the second protective column 2212, and the third protective column 2213 are spaced around the fourth protective column 2214 circumferentially, and one end of each of the first protective column 2211, the second protective column 2212, and the third protective column 2213 is connected to the lower end of the fourth protective column 2214. This forms a tripod structure that can effectively resist water flow impact and enhance the bottom erosion resistance of the first protective unit 221 and the second protective unit 222. The lower end of the fourth protective column 2214 can be directly inserted into the seabed or connected to the foundation structure. The connection provides the main support for the first protective unit 221 and the second protective unit 222, preventing the structure from tilting or shifting due to water flow impact or its own weight. The vertical structure of the fourth protective column 2214 can guide the water flow through layers, avoiding the formation of a strong scouring flow in one direction. In addition, the fourth protective column 2214, together with the first protective column 2211, the second protective column 2212, and the third protective column 2213, forms a turbulence zone, causing the water flow to form turbulence around the protective unit, reducing the direct scouring of the submarine cable 1. Finally, the first protective component 21 is located between the first protective column 2211 and the second protective column 2212, which allows the first protective column 2211 and the second protective column 2212 to form a barrier for the first protective component 21, which can effectively divide the high-speed water flow, forcing the water flow to undergo initial deflection and reducing the direct impact on the cable 1.

[0039] In some embodiments, the angle between the extending direction of the first protective post 2211 and the extending direction of the second protective post 2212 is 120°-180°. The first protective post 2211 extends away from the second protective post 2212 and is inclined towards the direction adjacent to the first protective member 21, while the second protective post 2212 extends away from the first protective post 2211 and is inclined towards the direction adjacent to the first protective member 21. Specifically, as... Figure 1 — Figure 4 As shown, the included angle between the first protective post 2211 and the second protective post 2212 can be any one of 120°, 130°, 140°, 150°, 160°, 170°, and 180°. The first protective post 2211 of the first protective unit 221 is located to the right of the second protective post 2212 of the first protective unit 221, and the first protective post 2211 of the first protective unit 221 extends from left to right and tilts backward. The second protective post 2212 of the first protective unit 221 extends from right to left and tilts backward, so that the first protective post 2211 and the second protective post 2212 of the first protective unit 221 form a V-shaped guide surface. The first protective post 2211 of the second protective unit 222 is located to the right of the second protective post 2212 of the second protective unit 222, and the first protective post 2211 of the second protective unit 222... The first protective column 2211 extends from left to right and tilts forward, and the second protective column 2212 of the second protective unit 222 extends from right to left and tilts forward, so that the first protective column 2211 of the second protective unit 222 and the second protective column 2212 of the second protective unit 222 form a V-shaped flow guide surface. The first protective component 21 is disposed between the first protective column 2211 of the first protective unit 221 and the second protective column 2212 of the first protective unit 221, and the second protective component 22 is disposed between the first protective column 2211 of the first protective unit 221 and the second protective column 2212 of the second protective unit 222. When the water flow impacts the cable 1, due to the arrangement of the first protective column 2211 and the second protective column 2212, the water flow can be forced to flow along the extension direction of the first protective column 2211 and the second protective column 2212, reducing the direct impact on the first protective component 21 on the cable 1.

[0040] In some embodiments, a plurality of third protective members 31 are arranged in multiple rows at intervals along the axial direction of the cable 1, and each row includes a plurality of third protective members 31 arranged at intervals along the radial direction of the cable 1, so that the third protective members 31 form a protective layer on the outer periphery of the cable 1. Specifically, as Figure 5 and Figure 6 As shown, multiple third protective components 31 are arranged in multiple rows along the left-right direction, and each row includes several third protective components 31 arranged at intervals along the front-back direction. Thus, multiple third protective components 31 form a matrix protection network on the surface of the cable 1. When water flows into the third protective layer, the front row of third protective components 31 first comes into contact with the water flow, absorbs the impact energy of the water flow through their own deformation and guides the direction of the water flow through the spacing between them, and the rear row of protective components respond in sequence, forming a multi-level energy dissipation system. Thus, the third protective structure can cope with water flow impacts of different magnitudes, ensuring that the cable 1 is in a safe operating state for a long time.

[0041] In some embodiments, the fourth protective member 32 includes a plurality of third protective units 321 and a plurality of fourth protective units 322, with the plurality of third protective units 321 stacked on one side of the third protective member 31 and the plurality of fourth protective units 322 stacked on the other side of the third protective member 31. Specifically, as Figure 5 and Figure 6 As shown, multiple third protective units 321 are stacked on the front side of the third protective member 31, and the stacking length of the multiple third protective units 321 is not less than the arrangement length of the multiple third protective members 31. Multiple fourth protective units 322 are stacked on the rear side of the third protective member 31, and the stacking length of the multiple fourth protective units 322 is not less than the arrangement length of the multiple third protective members 31. The third protective member 31 and the fourth protective member 32 are both irregularly shaped blocks. The multiple third protective members 31 and the multiple fourth protective members 32 weaken the hydrodynamic effect on the water-facing surface to protect the front and rear sides of the third protective member 31 and prevent the third protective member 31 from being overturned. In addition, under strong hydrodynamic environment, the third protective units 321 and the fourth protective units 322 can roll and rearrange to maintain the protective effect.

[0042] In some embodiments, the submarine cable erosion protection device 100 further includes a detection component (not shown in the figure). The detection component is located on one side of the cable 1 and is used to detect the position of the first protective device 2 or the second protective device 3. Specifically, the detection component can be a sonar, an underwater laser scanner, etc. The detection component is located on the seabed and on one side of the cable 1. Thus, the distribution of the first protective component 21 is detected by the detection component to ensure the stability and effectiveness of the first protective component 21. If the first protective component 21 is found to have moved or is improperly positioned, it is adjusted in time. Alternatively, the distribution of the third protective component 31 and the fourth protective component 32 is detected by the detection component to ensure the stability and effectiveness of the third protective component 31 and the fourth protective component 32. If the third protective component 31 and the fourth protective component 32 are found to have moved or are improperly positioned, they are adjusted in time to ensure the protective performance of the first protective device 2 and the second protective device 3.

[0043] In some embodiments, there are multiple first protective devices 2 and multiple second protective devices 3, and the multiple first protective devices 2 and multiple second protective devices 3 are all disposed on the cable 1 and spaced apart along the axial direction of the cable 1 (e.g., Figure 1 (As shown in the left and right directions). This improves the protection efficiency of the first protective device 2 and the second protective device 3, and extends the service life of the submarine cable anti-erosion device 100.

[0044] The beneficial effects of the submarine cable anti-erosion device 100 of this utility model embodiment are as follows:

[0045] First, by rationally arranging the first protective component 21, this invention effectively reduces the local flow velocity around the submarine cable 1, alters the fluid flow characteristics, and significantly reduces the scouring effect. The structural design of the first protective component 21 enables it to form a stable stacking system on the seabed, thereby reducing the risk of the cable 1 being suspended and ensuring the cable 1 remains safe and stable during long-term operation. Furthermore, the first protective component 21 can achieve self-stabilization through its gravity and geometric characteristics, making it difficult to be overturned or displaced by strong hydrodynamic forces, greatly improving the reliability and durability of the protection system.

[0046] Secondly, the first protective component 21 reduces the requirements for construction precision. Compared with the traditional sandbag stacking and concrete block placement process, the irregularly shaped block placement of this utility model does not require excessively precise positioning. A stable protective structure can be formed by the natural stacking of the irregularly shaped blocks, greatly simplifying the construction process, shortening the construction cycle, and thus significantly improving construction efficiency. In addition, due to the optimized design of the shape and arrangement of the irregularly shaped blocks, the manpower and equipment input required during construction is reduced, lowering the overall project cost.

[0047] Furthermore, the fourth protective component 32 also addresses the issue of concrete blocks being prone to instability in high hydrodynamic environments. As a reusable and highly stable erosion-resistant material, the fourth protective component 32 can maintain its protective effect for a long time under various marine conditions, improving the project's economy and sustainability.

[0048] Furthermore, the fourth protective component 32 possesses adaptive adjustment capabilities in strong hydrodynamic environments. Under extreme marine conditions, the fourth protective component 32 can roll and rearrange under the action of water flow, maintaining structural stability and protective effectiveness through adaptive adjustment, and preventing local instability and scour expansion. This adaptive performance enables it to achieve effective protection even under harsh conditions such as high flow velocities and complex terrain, demonstrating superior engineering adaptability and a wide range of applications.

[0049] Finally, the first protective element 21 and the fourth protective element 32 have an adaptive function. When subjected to hydrodynamic forces, the first protective element 21 and the fourth protective element 32 can roll and rearrange to maintain effective protection of the cable.

[0050] In summary, the beneficial effects of this utility model are as follows: through the optimized design and placement method of the irregularly shaped blocks (first protective component 21 and second protective component 22), the scour resistance of the submarine cable 1 is effectively improved, the construction difficulty and cost are reduced, and the adaptability and stability of the protection system in a strong hydrodynamic environment are enhanced, ensuring the long-term safety and reliability of the structure. This technical solution demonstrates significant economic benefits and engineering value in the protection project of the submarine cable 1, and has broad prospects for promotion and application.

[0051] The working process of the submarine cable anti-erosion device 100 in this embodiment of the utility model is as follows:

[0052] First, the target area requiring protection is determined through hydrodynamic analysis and topographic survey. Seabed topographic data is acquired using equipment such as sonar or submersibles, and the current velocity distribution is calculated in conjunction with hydrological data. Based on the current distribution, the locations of the first protective device 2 and the second protective device 3 are determined.

[0053] Preparations before deployment:

[0054] Location: Use GPS or other positioning systems to determine the specific location where the irregularly shaped blocks are placed.

[0055] Transportation: Transport the first protective device 2 to the construction vessel or platform to ensure its safety and stability.

[0056] Tool preparation: Prepare cranes, slings, pulley blocks and other deployment tools to ensure safe and effective operation of irregular blocks.

[0057] The deployment process of the first protective device 2:

[0058] Positioning: Based on pre-calculated locations, the first protective component 21 and the second protective component 22 are precisely placed in the target area. Spacing Adjustment: The spacing between the irregularly shaped blocks is adjusted according to the hydrodynamic environment to ensure the formation of an optimal protective structure. Measuring tools such as laser rangefinders or sonar are typically used to measure the distance between the irregularly shaped blocks, with a deployment density of 10 first protective components 21 per square meter.

[0059] Stacking method: The first protective components 21 are stacked together by mutual support through their gravity and surface structure, forming a stable overall protective structure. A crane or gantry crane is used to precisely stack the first protective components 21 in place, ensuring stacking stability. The placement angle is from 0° to 45°, adjusted according to the water flow direction.

[0060] Stability check: After deployment, use a submersible or remotely operated vehicle to check the stability of the first protective component 21 to ensure that it will not move under the action of water flow.

[0061] Monitoring and maintenance: Regularly check the deployment of the first protective component 21 using sonar or other monitoring equipment to ensure its stability and effectiveness. If the first protective component 21 is found to have moved or is improperly positioned, adjust it promptly.

[0062] Preparations before deploying the second protective device 3:

[0063] Positioning: Determine the placement of the third protective component 31 and the fourth protective component 32 to ensure that they can be effectively combined.

[0064] Transportation: Transport the third protective component 31 and the fourth protective component 32 to the construction vessel or platform.

[0065] Tool preparation: Prepare a crane, slings, pulley blocks, and special tools for deploying the third protective component 31.

[0066] Deployment process:

[0067] Fourth protective component 32 deployment: First, deploy the fourth protective component 32. Adjust the deployment spacing and stacking method according to the hydrodynamic environment to ensure that the irregular block can weaken the hydrodynamic effect on the water-facing side.

[0068] Third protective component 31 placement: After the fourth protective component 32 is placed, use a special tool to place the third protective component 31 between the fourth protective components 32 to fill the gaps and enhance overall stability. Combined placement: The third protective components 31 and the fourth protective components 32 are placed in rows together to form a stable protective system. Ensure that the third protective components 31 and the fourth protective components 32 are tightly connected to prevent secondary erosion caused by water flowing through gaps.

[0069] Stability check: Use a submersible or remotely operated vehicle to check the deployment of the third protective component 31 and the fourth protective component 32 to ensure their stability and effectiveness.

[0070] Monitoring and Maintenance: Regularly monitor the deployment of the third protective component 31 and the fourth protective component 32 to ensure their stability in a strong hydrodynamic environment. If damage to the third protective component 31 or the fourth protective component 32 is found, adjust or replace them promptly.

[0071] Through the detailed description of the above embodiments, in conjunction with the accompanying drawings, engineers can more clearly implement the deployment of the anti-scouring device for the submarine cable 1, ensuring the operability and protective effect of the project.

[0072] Fourth protective components 32 of different sizes are deployed in the target area. By adjusting the deployment spacing and stacking method, a protective body is formed. The stacking structure of the irregularly shaped blocks, based on their own weight and surface structure stability, can significantly reduce the flow velocity on both sides of the cable 1 and reduce the influence of the narrow tube effect.

[0073] In this embodiment, the third protective component 31 and the fourth protective component 32 are arranged in a combined configuration. In areas with high hydrodynamic intensity, this combination of the third and fourth protective components 31 and 32 is employed. The fourth protective component 32 weakens the hydrodynamic forces on the water-facing side, while the third protective component 31, through its flexible design, further absorbs fluid impact and prevents the structure from being overturned. Under strong hydrodynamic conditions, the irregularly shaped blocks can roll and rearrange to maintain the protective effect. This solution is suitable for scour control engineering in complex marine environments.

[0074] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. An erosion control device for a submarine pipe or cable, characterised in that, The utility model relates to a pipeline cable laying system, comprising: a pipeline cable adapted to be laid in a seabed; a first protection device adapted to be arranged in a seabed region of a first flow velocity, the first protection device being arranged on the pipeline cable, the first protection device comprising a plurality of first protection pieces and a second protection piece, the plurality of first protection pieces being shaped blocks and stacked on the pipeline cable so that the first protection pieces form a protective layer on the outer circumferential side of the pipeline cable, the second protection piece being arranged on one side of the plurality of first protection pieces, the second protection piece being used to reduce the local flow velocity around the second protection piece to form a stable flow field; a second protection device adapted to be arranged in a seabed region of a second flow velocity, the first flow velocity being less than the second flow velocity, the second protection device being arranged on the pipeline cable, the second protection device comprising a plurality of third protection pieces and a plurality of fourth protection pieces, the third protection pieces being made of flexible material and being uniformly distributed on the pipeline cable so that the third protection pieces form a protective layer on the outer circumferential side of the pipeline cable, the fourth protection pieces being shaped blocks and stacked on both sides of the third protection pieces, the fourth protection pieces being used to reduce the hydrodynamic load around the third protection pieces to prevent the third protection pieces from being overturned.

2. The scour protection device of a submarine pipe or cable according to claim 1, characterized in that The first protection piece has a first flow disturbing part, and the fourth protection piece has a second flow disturbing part, one of the first flow disturbing part and the second flow disturbing part being any one of a protrusion or a groove, the first flow disturbing part and the second flow disturbing part being used to disturb the water flow around the pipeline cable to break the continuity of the water flow.

3. The scour protection device of a submarine pipe or cable according to claim 2, characterized in that The first flow disturbing part is a plurality of first flow disturbing parts arranged on the outer circumferential surface of the first protection piece and spaced apart along the circumferential direction of the first protection piece, and / or the second flow disturbing part is a plurality of second flow disturbing parts arranged on the outer circumferential surface of the fourth protection piece and spaced apart along the circumferential direction of the fourth protection piece.

4. The scour protection device of a submarine pipe or cable according to claim 1, characterized in that At least one of the first protection piece and the fourth protection piece is any one of an anvil shape, a three-piece shape, a hollow tetrahedron shape, and a three-column shape.

5. The scour protection device of a submarine pipe or cable according to claim 1, characterized in that The second protection piece comprises a first protection unit and a second protection unit, the first protection unit and the second protection unit being arranged on both sides of the first protection piece and spaced apart along the radial direction of the pipeline cable, the first protection unit and the second protection unit being used to reduce the local flow velocity on both sides of the pipeline cable.

6. The scour protection device of a submarine pipe or cable according to claim 5, characterized in that The first protection unit and the second protection unit each comprise a first protection column, a second protection column, a third protection column, and a fourth protection column, the fourth protection column extending in the vertical direction, the first protection column, the second protection column, and the third protection column extending in the horizontal direction, the first protection column, the second protection column, and the third protection column being spaced apart around the circumferential direction of the fourth protection column, one end of the first protection column, the second protection column, and the third protection column being connected to the fourth protection column, and the first protection piece being located between the first protection column and the second protection column.

7. The scour protection device of a submarine pipe or cable according to claim 6, characterized in that An included angle between an extending direction of the first guard column and an extending direction of the second guard column is 120°-180°, the first guard column extends towards a direction away from the second guard column and is inclined towards a direction adjacent to the first guard member, and the second guard column extends towards a direction away from the first guard column and is inclined towards a direction adjacent to the first guard member.

8. The undersea pipe cable scour protection apparatus of claim 1, wherein, A plurality of the third guard members are arranged in multiple rows along an axial direction of the pipe cable, each row including a plurality of third guard members arranged along a radial direction of the pipe cable, so that the third guard members form a protective layer on an outer circumferential side of the pipe cable.

9. The undersea pipe cable scour protection apparatus of claim 1, wherein, The fourth guard member includes a plurality of third guard units and a plurality of fourth guard units, the plurality of third guard units being stacked on one side of the third guard member, and the plurality of fourth guard units being stacked on the other side of the third guard member.

10. The undersea pipe cable scour protection apparatus of claim 1, wherein, Further included is a detection assembly arranged on one side of the pipe cable, the detection assembly being configured to detect a position of the first guard device or the second guard device.

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