A submarine cable anti-scour fixing device based on active sand aggregation

Abstract

This utility model belongs to the field of offshore wind power and discloses a submarine cable anti-scour fixing device based on active sand accumulation. It includes a submarine cable fixing mechanism, a seabed connector, and a first active sand-accumulating biomimetic plant. The submarine cable fixing mechanism is installed on and covers the submarine cable. The seabed connector is located at the lower end of the submarine cable fixing mechanism and is used to connect to the seabed. The first active sand-accumulating biomimetic plant is installed on the submarine cable fixing mechanism. This utility model fixes the submarine cable through the submarine cable fixing mechanism, and the flow-blocking and flow-reducing effect of the biomimetic plant causes sediment to accumulate around the submarine cable, preventing the submarine cable from failing due to scour.

Description

Technical Field

[0001] The utility model relates to the field of offshore wind power, in particular to a submarine cable anti-scour fixing device based on active sand aggregation. Background Art

[0002] With the large-scale development of offshore wind power, the seabed scouring around the offshore wind power foundation piles has become a pain point in the industry. The seabed scouring not only affects the safety of the offshore wind power foundation, but also causes the submarine cables near the piles to be hollowed out on a large scale, and the submarine cables are suspended in the air on a large scale, which intensifies the impact of the ocean current on the submarine cables and causes the submarine cables to fail. At present, the problem of submarine cable failure caused by scouring in offshore wind farms is becoming more and more serious, resulting in frequent power outages in wind farm lines, which seriously affects the power generation revenue of offshore wind farms, and the cost of repairing and maintaining failed submarine cables is very high. At present, in addition to the submarine cable protection device or system used in the submarine cable itself, sand blankets, sand bags or riprap are also used for protection, but these are all passive protections with poor protection effects. The present application proposes a submarine cable anti-scouring fixing device based on active sand aggregation. The submarine cable is fixed by the submarine cable anti-scouring fixing device, and the flow blocking and flow reduction effects of bionic plants cause the sediment to gather around the submarine cable to prevent the submarine cable from failing due to scouring. Utility Model Content

[0003] The utility model aims to provide a submarine cable anti-scour fixing device based on active sand aggregation to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A submarine cable anti-scour fixing device based on active sand gathering comprises a submarine cable fixing mechanism, a seabed connector and a first active sand gathering bionic plant, wherein the submarine cable fixing mechanism is arranged on and covers the submarine cable, the seabed connector is arranged at the lower end of the submarine cable fixing mechanism and is used to connect to the seabed, and the first active sand gathering bionic plant is arranged on the submarine cable fixing mechanism.

[0006] Furthermore, the submarine cable fixing mechanism includes a submarine cable fixing bracket and a submarine cable clamp, the submarine cable fixing bracket covers the submarine cable, the active sand-gathering bionic plant is arranged on the side of the submarine cable fixing bracket facing away from the submarine cable, and the submarine cable clamp is arranged on the submarine cable fixing bracket and clamps the submarine cable.

[0007] Furthermore, the submarine cable clamp comprises a fastening bolt and a fastening gasket, wherein the fastening bolt is screwed onto the submarine cable fixing bracket, and the fastening gasket is fastened onto the submarine cable by the fastening bolt.

[0008] Furthermore, there are at least two groups of submarine cable clamps, which are arranged on both sides of the submarine cable fixing bracket to clamp the two sides of the submarine cable respectively.

[0009] Furthermore, the seabed connector is a suction cylinder.

[0010] Furthermore, there are two groups of seabed connectors, which are arranged on both sides of the lower end of the seabed fixing mechanism.

[0011] Furthermore, it also includes a winding mechanism and a second active sand-gathering bionic plant, the winding mechanism is connected to the submarine cable fixing mechanism, and has a reeled state and an unfolded state, and a second active sand-gathering bionic plant, the second active sand-gathering bionic plant is arranged on the winding mechanism, and is reeled and unfolded together with the winding mechanism.

[0012] Furthermore, the winding mechanism comprises a cloth roll and a counterweight reel, one end of the cloth roll is connected to the submarine cable fixing mechanism, and the other end is connected to the counterweight reel, and the second active sand-gathering bionic plant is arranged on the cloth roll;

[0013] When the winding mechanism is in the reeling state, the second active sand-gathering bionic plant is wound on the counterweight reel together with the cloth roll; when the winding mechanism is in the unfolding state, the second active sand-gathering bionic plant is unfolded on the seabed and / or the seabed connector together with the cloth roll, and the second active sand-gathering bionic plant is located on the side of the cloth roll facing away from the seabed.

[0014] Furthermore, the first active sand-gathering bionic plant and / or the second active sand-gathering bionic plant is an active sand-gathering bionic tree.

[0015] Furthermore, a group of winding mechanisms are respectively arranged on both sides of the submarine cable fixing mechanism, and each winding mechanism is correspondingly provided with a second active sand-gathering bionic plant.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1) The utility model is modularized and can flexibly adjust the number of submarine cable anti-scouring fixing devices according to the on-site scouring conditions, making transportation convenient;

[0018] 2) The construction of this utility model does not rely on large offshore lifting vessels, which is more convenient;

[0019] 3) The utility model can be installed quickly, effectively utilizing the valuable window period for offshore operations;

[0020] 4) The utility model can reduce the cost of engineering construction and is conducive to large-scale promotion;

[0021] 5) The utility model actively gathers sand around the soft submarine cable, and the anti-scouring effect is long-lasting;

[0022] 6) The utility model is flexible in construction and can adapt to different suspended lengths and heights of submarine cables, reducing the difficulty of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1This is one of the schematic diagrams of the structure of the utility model in use state, in which the winding mechanism is in the winding state.

[0024] Figure 2 This is the second schematic diagram of the structure of the utility model in use state, in which the winding mechanism is in an unfolded state.

[0025] Figure 3 This is the third schematic diagram of the structure of the utility model in use state.

[0026] In the figure: submarine cable 1, submarine cable fixing bracket 2, fastening bolts 3, fastening gaskets 4, seabed connector 5, first active sand-gathering bionic plant 6, cloth roll 7, counterweight reel 8, second active sand-gathering bionic plant 9, seabed 10, steel pipe column 11. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-Figure 3 A submarine cable anti-scour fixing device based on active sand accumulation includes a submarine cable fixing mechanism, a seabed connector 5 and a first active sand-accumulating bionic plant 6. The submarine cable fixing mechanism is arranged and covered on the submarine cable 1. The seabed connector 5 is arranged at the lower end of the submarine cable fixing mechanism, which is used to connect with the seabed 10. The first active sand-accumulating bionic plant 6 is arranged on the submarine cable fixing mechanism.

[0029] Continue reading Figure 1 and Figure 2 In one embodiment of the utility model, the submarine cable fixing mechanism includes a submarine cable fixing bracket 2 and a submarine cable clamp. The submarine cable fixing bracket 2 is an inverted U-shaped structure, which is covered on the submarine cable 1. There are multiple first active sand-gathering bionic plants 6, which are arranged on the side of the submarine cable fixing bracket 2 facing away from the submarine cable 1. The submarine cable clamp is arranged on the submarine cable fixing bracket 2 and clamps the submarine cable 1.

[0030] Continue reading Figure 1 and Figure 2 In one embodiment of the utility model, there are at least two groups of submarine cable clamps, which are arranged on both sides of the submarine cable fixing bracket 2 to clamp the two sides of the submarine cable 1 respectively. The submarine cable clamp includes a fastening bolt 3 and a fastening gasket 4. The fastening bolt 3 is screwed on the submarine cable fixing bracket 2. The fastening gasket 4 rotates with the fastening bolt 3 toward one end of the submarine cable 1, and is tightened on the submarine cable 1 by the fastening bolt 3.

[0031] Continue reading Figure 1 and Figure 2 In one embodiment of the utility model, there are two groups of seabed connectors 5, which are arranged on both sides of the lower end of the seabed 10 fixing mechanism. The seabed connector 5 is a suction cylinder, which is inserted into the seabed 10 by suction.

[0032] Continue reading Figure 1 and Figure 2 In one embodiment of the utility model, the utility model also includes a winding mechanism and a second active sand-gathering bionic plant 9. The winding mechanism is connected to the submarine cable fixing bracket 2, and has a reeled state and an unfolded state. The second active sand-gathering bionic plant 9 is arranged on the winding mechanism, and is reeled and unfolded together with the winding mechanism.

[0033] Continue reading Figure 1 and Figure 2 In one embodiment of the utility model, a group of winding mechanisms are respectively arranged on both sides of the submarine cable fixing bracket 2, and each winding mechanism is correspondingly provided with a second active sand gathering bionic plant 9. Specifically, the winding mechanism includes a cloth roll 7 and a counterweight reel 8, one end of the cloth roll 7 is connected to the submarine cable fixing bracket 2, and the other end is connected to the counterweight reel 8, and there are a plurality of second active sand gathering bionic plants 9, which are fully distributed on the cloth roll 7.

[0034] When the winding mechanism is in the reeling state, the counterweight reel 8 is close to one side of the submarine cable fixing bracket 2, and the second active sand-gathering bionic plant 9 is wound on the counterweight reel 8 together with the cloth roll 7, and the second active sand-gathering bionic plant 9 is rolled up on the inner side of the cloth roll 7. When the winding mechanism is in the unfolding state, the counterweight reel 8 rolls to a place away from the submarine cable fixing bracket 2, and is connected to the submarine cable fixing bracket 2 by means of the cloth roll 7, and the second active sand-gathering bionic plant 9 is unfolded on the seabed 10 and the seabed connector 5 together with the cloth roll 7, and the second active sand-gathering bionic plant 9 is located on the side of the cloth roll 7 facing away from the seabed 10.

[0035] It should be noted that the first active sand-gathering bionic plant 6 and the second active sand-gathering bionic plant 9 of the present invention are both active sand-gathering bionic trees. In addition, active sand-gathering bionic grass may also be used.

[0036] Near the steel pipe pile 11, the submarine cable 1 passes through the steel pipe pile 11 and enters the pile. The submarine cable 1 outside the steel pipe pile 11 is in a suspended state. A submarine cable fixing and sand gathering system is formed by a plurality of submarine cable anti-scouring fixing devices of the utility model. Each submarine cable anti-scouring fixing device is installed at an interval of 0.2-0.5H on the seabed (H is the actual height of the active sand gathering bionic tree). Each submarine cable anti-scouring fixing device is provided with a submarine cable fixing bracket 2. The submarine cable fixing bracket 2 has a fastening bolt 3 and a fastening gasket 4 connected to the fastening bolt 3. The submarine cable fixing bracket 2 can be made of steel or concrete material and is connected to a suction cylinder. The height of the suction cylinder is adjusted according to the position of the fixed installation of the submarine cable, and its height does not exceed 3m.

[0037] Implementation process: The utility model is assembled on land and transported to the target position at sea. A small crane is used to place the utility model above the submarine cable 1. After landing, suction is used to suck the suction cylinder so that the inner side of its top cover contacts the seabed 10. Then the fastening bolts 3 are tightened to make the fastening gasket 4 fit the submarine cable 1 tightly, thereby achieving the purpose of fixing the submarine cable. The active sand-gathering bionic tree is installed together with the submarine cable fixing bracket 2 and the suction cylinder. The suction cylinder cover is formed into a slope of at least 10 degrees. Before launching, a cloth roll 7 with an active sand-gathering bionic tree is installed on the top of the cylinder cover and is in a reeled state. There is a counterweight reel 8 in the center. After the suction cylinder is installed in place, the cloth roll 7 is released and can be automatically unfolded. Since the density of the bionic tree is less than that of water, it can automatically float up, and the counterweight reel 8 plays a ballast counterweight role.

[0038] The density of active sand-collecting bionic tree is lower than that of water, ranging from 0.9 to 0.95 t / m 3 After the entire system was installed in place, the bionic tree floated and began to actively gather sand to protect the submarine cable 1.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A submarine cable anti-scour fixing device based on active sand aggregation, characterized in that: The invention comprises a submarine cable fixing mechanism, a seabed connector (5) and a first active sand-gathering bionic plant (6), wherein the submarine cable fixing mechanism is arranged on and covers the submarine cable (1), the seabed connector (5) is arranged at the lower end of the submarine cable fixing mechanism and is used to connect to the seabed (10), and the first active sand-gathering bionic plant (6) is arranged on the submarine cable fixing mechanism.

2. The anti-scouring fixing device for submarine cables based on active sand aggregation according to claim 1 is characterized in that: The submarine cable fixing mechanism comprises a submarine cable fixing bracket (2) and a submarine cable clamp; the submarine cable fixing bracket (2) covers the submarine cable (1); the active sand-gathering bionic plant is arranged on a side of the submarine cable fixing bracket (2) facing away from the submarine cable (1); and the submarine cable clamp is arranged on the submarine cable fixing bracket (2) and clamps the submarine cable (1).

3. The anti-scouring fixing device for submarine cables based on active sand aggregation according to claim 2 is characterized in that: The submarine cable clamp comprises a fastening bolt (3) and a fastening gasket (4), wherein the fastening bolt (3) is screwed onto the submarine cable fixing bracket (2), and the fastening gasket (4) is fastened onto the submarine cable (1) by the fastening bolt (3).

4. The anti-scouring fixing device for submarine cables based on active sand aggregation according to claim 2 is characterized in that: There are at least two groups of submarine cable clamps, which are arranged on both sides of the submarine cable fixing bracket (2) and clamp the two sides of the submarine cable (1) respectively.

5. The anti-scouring fixing device for submarine cables based on active sand aggregation according to claim 1 is characterized in that: The seabed connector (5) is a suction cylinder.

6. The anti-scouring fixing device for submarine cables based on active sand aggregation according to claim 1 is characterized in that: The seabed connectors (5) are in two groups, which are arranged on both sides of the lower end of the seabed (10) fixing mechanism.

7. The anti-scouring fixing device for submarine cables based on active sand aggregation according to claim 1 is characterized in that: It also comprises a winding mechanism and a second active sand-gathering bionic plant (9), wherein the winding mechanism is connected to the submarine cable fixing mechanism and has a reeled state and an unfolded state, and the second active sand-gathering bionic plant (9) is arranged on the winding mechanism and is reeled and unfolded together with the winding mechanism.

8. The anti-scouring fixing device for submarine cables based on active sand aggregation according to claim 7 is characterized in that: The winding mechanism comprises a cloth roll (7) and a counterweight reel (8); one end of the cloth roll (7) is connected to the submarine cable fixing mechanism, and the other end is connected to the counterweight reel (8); the second active sand-gathering bionic plant (9) is arranged on the cloth roll (7); When the winding mechanism is in a reeling state, the second active sand-gathering bionic plant (9) is wound together with the cloth roll (7) on the counterweight reel (8); when the winding mechanism is in an unfolding state, the second active sand-gathering bionic plant (9) is unfolded together with the cloth roll (7) on the seabed (10) and / or the seabed connector (5), and the second active sand-gathering bionic plant (9) is located on the side of the cloth roll (7) facing away from the seabed (10).

9. The anti-scouring fixing device for submarine cables based on active sand aggregation according to claim 7 is characterized in that: The first active sand-gathering bionic plant (6) and / or the second active sand-gathering bionic plant (9) is an active sand-gathering bionic tree.

10. The anti-scouring fixing device for submarine cables based on active sand aggregation according to claim 7, characterized in that: A group of winding mechanisms are respectively arranged on both sides of the submarine cable fixing mechanism, and each winding mechanism is correspondingly provided with a second active sand-gathering bionic plant (9).

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