CN220754309U

CN220754309U - Cable protection tube structure for offshore wind power

Info

Publication number: CN220754309U
Application number: CN202322394943.4U
Authority: CN
Inventors: 李腾飞; 张守国; 吴子昂
Original assignee: Shanghai Investigation Design and Research Institute Co Ltd SIDRI
Current assignee: Shanghai Investigation Design and Research Institute Co Ltd SIDRI
Priority date: 2023-09-04
Filing date: 2023-09-04
Publication date: 2024-04-09
Anticipated expiration: 2033-09-04

Abstract

The utility model discloses a cable protection pipe structure for offshore wind power, which belongs to the technical field of submarine cable protection and comprises a jacket; the main cable pipe is arranged in the jacket along the vertical direction; one end of the supporting tube is fixedly connected with the jacket, and the other end of the supporting tube is fixedly connected with the main cable tube; the top of the main cable tube is fixedly connected with a plurality of auxiliary cable tubes, and the bottom of the main cable tube is provided with a cable bending tube corresponding to the auxiliary cable tubes. The utility model not only can reduce the water blocking area of the jacket of the offshore booster station and the environmental load, reduce the engineering quantity of the jacket and the pile structure, but also can effectively avoid damage to the overslung sea cable caused by the scouring of the seabed, thereby ensuring the normal operation of the wind power plant.

Description

Cable protection tube structure for offshore wind power

Technical Field

The utility model relates to the technical field of submarine cable protection, in particular to a cable protection tube structure for offshore wind power.

Background

The offshore booster station is the core of an offshore wind farm, and the power generated by a fan can be converged into the offshore booster station through a submarine cable (submarine cable). In order to protect the submarine cable, a cable protection pipe is arranged on the basis of the offshore booster station, and when the submarine cable is laid, the submarine cable sequentially passes through the corresponding cable protection pipe so as to avoid the collision of floaters and direct sunlight.

At present, in the design of an offshore booster station, cable protection pipes are mainly arranged around a jacket foundation along the side face of the jacket, the cable protection pipes are transited at an offshore bed surface by adopting an arc section, the front ends of the arc sections extend to the outer side of the jacket by adopting straight line sections, and the cable protection pipes are convenient to drag and fix by adopting a bending limiter, and the end parts of the cable protection pipes are in a horn mouth structure type; meanwhile, the periphery of the offshore booster station generally adopts anti-scouring measures such as interlocking rows, solidified soil, riprap and the like so as to strengthen the protection of the submarine cable. However, the existing cable protective tube scheme still has the following defects:

(1) The cable protection pipe is arranged around the jacket, so that the water blocking area and the environmental load of the jacket can be increased, and the structural design difficulty and the engineering quantity are increased.

(2) The cable protection pipes are arranged along the side surfaces of the jacket, the end parts of the cable protection pipes extend out of the plane of the jacket, and the submarine cables are easy to be in a suspended state and broken along with the deepening of the scouring depth.

Therefore, how to reduce the influence of the cable protection tube on the jacket foundation and improve the protection effect of the submarine cable becomes a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

In view of the above, the utility model aims to provide a cable protection tube structure for offshore wind power, which aims to solve the technical problem that the existing cable protection tube has poor protection effect on a submarine cable.

The technical scheme adopted by the utility model is as follows: a cable duct structure for offshore wind power, comprising:

a jacket;

the main cable pipe is arranged in the jacket along the vertical direction;

one end of the supporting tube is fixedly connected with the jacket, and the other end of the supporting tube is fixedly connected with the main cable tube;

the cable bending device comprises a main cable pipe, a plurality of auxiliary cable pipes, a cable bending pipe and a cable bending pipe, wherein the plurality of auxiliary cable pipes are fixedly connected to the top end of the main cable pipe, and the cable bending pipe corresponding to the auxiliary cable pipes is arranged at the bottom end of the main cable pipe.

Preferably, the main cable pipe comprises an upper pipe section, a middle pipe section and a lower pipe section which are sequentially arranged at intervals from top to bottom, the top ends of the upper pipe section, the middle pipe section and the lower pipe section are fixedly connected with a steel platform, and a plurality of auxiliary cable pipes are uniformly distributed on the steel platform in a circumference mode.

Preferably, the two axial ends of the auxiliary cable tube are provided with first bellmouth.

Preferably, the top end of the auxiliary cable tube is fixedly connected with a connecting flange, and the connecting flange is detachably and fixedly connected with an anchoring device for fixing the submarine cable.

Preferably, a guide plate is fixedly connected inside the main cable tube, and a plurality of guide holes are uniformly distributed on the circumference of the guide plate.

Preferably, the diameter size of the main cable tube is 3 m-5 m.

Preferably, the centre of gravity of the jacket is located on the axis of the main conduit.

Preferably, one end of the cable bending tube is communicated with the main cable tube, and the other end of the cable bending tube is provided with a second horn mouth.

The utility model has the beneficial effects that:

according to the utility model, the main cable pipe is fixedly arranged in the jacket along the vertical direction, so that the water blocking area of the jacket and the received environmental load can be reduced, and the engineering quantity of the jacket and the pile structure is reduced; meanwhile, the auxiliary cable tube is arranged at the top end of the main cable tube, the cable bending tube is arranged at the bottom end of the main cable tube, so that the sea cable laying trend is positioned above the jacket anti-sinking plate structure, the sea cable is horizontally arranged on the anti-sinking plate, the phenomenon of suspended damage of the sea cable caused by scouring of the seabed can be effectively avoided, and the normal operation of a wind power plant is further ensured.

Drawings

FIG. 1 is a schematic structural view of a cable protection tube structure for offshore wind power of the present utility model;

FIG. 2 is a schematic structural view of a main cable;

FIG. 3 is one of the schematic structural views of the secondary cable tube;

FIG. 4 is a second schematic view of the secondary cable tube;

FIG. 5 is a schematic illustration of the connection of the secondary cable tube to the anchoring device;

fig. 6 is a schematic cross-sectional view of the main cable.

The reference numerals in the drawings illustrate:

10. a jacket;

20. a main cable tube;

21. an upper pipe section; 22. a middle pipe section; 23. a lower pipe section; 24. a steel platform; 25. a guide plate; 26. a guide hole;

30. a support tube;

40. a secondary cable tube;

41. a first flare; 42. a connecting flange; 43. a connecting bolt;

50. a cable bending tube;

51. a second flare;

60. an anchoring device;

70. sea cable.

Detailed Description

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present utility model and are not intended to be limiting.

In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

1-6, a cable protection tube structure for offshore wind power comprises:

jacket 10.

A main cable tube 20, the main cable tube 20 being disposed inside the jacket 10 in a vertical direction.

And one end of the support tube 30 is fixedly connected with the jacket 10, and the other end of the support tube 30 is fixedly connected with the main cable tube 20.

The top end of the main cable 20 is fixedly connected with a plurality of auxiliary cable 40, and the bottom end of the main cable 20 is provided with a cable bending tube 50 corresponding to the auxiliary cable 40.

The main cable tube 20 is fixedly arranged in the jacket 10 along the vertical direction, so that the water blocking area of the jacket 10 and the received environmental load can be reduced, and the engineering quantity of the jacket 10 and the pile structure is reduced; simultaneously, this application installs vice cable pipe 40 on the top of main cable pipe 20, installs curved cable pipe 50 in the bottom of main cable pipe 20, can make sea cable 70 lay trend be located the anti-sinking plate structure top of jacket 10, and sea cable 70 keeps flat and can effectively avoid the unsettled damage phenomenon emergence of sea cable 70 that the seabed erodees and lead to on anti-sinking plate, and then guarantees wind-powered electricity generation field's normal operating.

In one embodiment, as shown in fig. 1, 2, 3 and 4, the main cable tube 20 includes an upper tube section 21, a middle tube section 22 and a lower tube section 23 sequentially arranged at intervals from top to bottom in the axial direction; wherein the upper tube section 21, the middle tube section 22 and the lower tube section 23 are fixedly connected with the jacket 10 through a plurality of support tubes 30; the top ends of the upper pipe section 21, the middle pipe section 22 and the lower pipe section 23 are fixedly connected with a steel platform 24, and the bottom ends of the upper pipe section 21 and the middle pipe section 22 are fixedly connected with the steel platform 24; the steel platform 24 is circumferentially and uniformly provided with a plurality of auxiliary cable tubes 40, that is, a plurality of auxiliary cable tubes 40 are circumferentially and uniformly distributed on the steel platform 24 around the axis of the main cable tube 20.

This is so arranged because: for the main cable tube 20 in the deepwater area, the main cable tube 20 is divided into an upper section, a middle section and a lower section under water, so that the increase of engineering quantity caused by overlong main cable tube 20 can be avoided, and each section of main cable tube 20 is fixed on the jacket 10 through the supporting tube 30, so that the sea cable 70 exposed outside is only influenced by water flow load and cannot be damaged and broken.

Preferably, the two axial ends of the auxiliary cable 40 are provided with first flare openings 41 to facilitate the axial pulling of the submarine cable 70.

In a specific embodiment, as shown in fig. 2, 3 and 5, a plurality of auxiliary cable tubes 40 are uniformly distributed on the circumference of the steel platform 24 at the top end of the upper pipe section 21, and a connecting flange 42 is welded at the top end of each auxiliary cable tube 40, the connecting flange 42 is detachably and fixedly connected with an anchoring device 60 through a connecting bolt 43, and the anchoring device 60 can be fixedly connected with a submarine cable 70.

This is so arranged because: the submarine cable 70 penetrated in the main cable tube 20 is fixed and supported by the anchoring device 60, so that the submarine cable 70 can be prevented from shaking and falling down, and thus the submarine cable 70 is prevented from being damaged.

It should be noted that, the anchoring device 60 is a prior art, and will not be described in detail herein.

In a specific embodiment, as shown in fig. 6, a guide plate 25 is fixedly welded inside the main cable tube 20, the guide plate 25 is fixedly arranged inside the main cable tube 20 along the horizontal direction, a plurality of guide holes 26 are uniformly distributed on the circumference of the guide plate 25, the guide holes 26 are in one-to-one correspondence with the auxiliary cable tubes 40, and the guide holes 26 and the auxiliary cable tubes 40 are coaxially arranged.

This is so arranged because: the plurality of guide holes 26 are arranged in the main cable tube 20, so that the cross of the inner submarine cables 70 can be avoided, and the breakage caused by cable pulling during the laying construction of the submarine cables 70 can be avoided.

Specifically, the diameter of the guiding hole 26 is larger than that of the submarine cable 70, and the edge of the guiding hole 26 is rounded to avoid being scratched when the submarine cable 70 is pulled.

Preferably, the diameter of the main cable duct 20 is 3m to 5m, and the height of the main cable duct 20 can be adjusted according to the water depth.

Specifically, the height of the bottom end of the main cable 20 from the ground is 2.5 m-3 m.

More preferably, the main conduit 20 is located in the center of the jacket 10, i.e., the center of gravity of the jacket 10 is located inside the main conduit 20.

Specifically, the center of gravity of the jacket 10 is located on the axis of the main conduit 20.

In a specific embodiment, as shown in fig. 1 and 2, a plurality of openings (not shown) are uniformly distributed on the circumference of the bottom end of the main cable tube 20, and the angles of the openings can be adjusted according to the trend of the submarine cable 70; one end of the cable bending tube 50 is inserted into the opening and fixed, and the other end of the cable bending tube 50 is provided with a second bell mouth 51, and the bending radius of the second bell mouth 51 is larger than the minimum allowable bending radius of the submarine cable 70.

The use process of the cable protection tube structure is as follows:

penetrating the submarine cable 70 into the main cable tube 20 through the cable bending tube 50 at the bottom end of the main cable tube 20, penetrating the submarine cable 70 out of the top end of the main cable tube 20 through the auxiliary cable tube 40, and connecting the top end of the submarine cable 70 into an upper block of the offshore booster station; after the cable pulling construction is completed, the submarine cable 70 is fixed using the anchor device 60 to prevent the submarine cable 70 from shaking.

Compared with the prior art, the application has at least the following beneficial technical effects:

the marine cable laying device is applicable to marine cable laying of different water depths, the main cable pipe is arranged in the jacket, the water blocking area of the jacket of the marine booster station and the received environmental load can be reduced, and then the engineering quantity of the jacket and the pile structure is reduced.

This application sets up the main cable pipe inside the jacket along vertical direction for sea cable laying trend is located the anti-sinking plate structure top of jacket, and sea cable is kept flat on anti-sinking plate, can effectively avoid the unsettled overlength of sea cable that the seabed erodees to lead to take place to damage, and then guarantees wind-powered electricity generation field's normal operating.

The cable bending pipe is installed at the bottom end of the main cable pipe, and the cable bending pipe can adjust azimuth angles according to different cable returning directions, so that the length of a cable can be saved, and the construction adjustment of the main cable pipe is facilitated.

The utility model provides an inside a plurality of guiding holes of arranging of main cable pipe can avoid inside sea cable to cross, leads to the sea cable to lay the cable and break when being under construction.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims

1. The utility model provides a cable protection tube structure for offshore wind power which characterized in that includes:

a jacket (10);

the main cable tube (20), the main cable tube (20) is arranged in the jacket (10) along the vertical direction;

the cable guide device comprises a support tube (30), wherein one end of the support tube (30) is fixedly connected with a jacket (10), and the other end of the support tube (30) is fixedly connected with a main cable tube (20);

the cable bending device is characterized in that a plurality of auxiliary cable pipes (40) are fixedly connected to the top end of the main cable pipe (20), and a cable bending pipe (50) corresponding to the auxiliary cable pipes (40) is arranged at the bottom end of the main cable pipe (20).

2. The offshore wind power cable protection pipe structure according to claim 1, wherein the main cable pipe (20) comprises an upper pipe section (21), a middle pipe section (22) and a lower pipe section (23) which are sequentially arranged at intervals from top to bottom, the top ends of the upper pipe section (21), the middle pipe section (22) and the lower pipe section (23) are fixedly connected with a steel platform (24), and a plurality of auxiliary cable pipes (40) are uniformly distributed on the circumference of the steel platform (24).

3. The offshore wind power cable protection pipe structure according to claim 2, wherein the two axial ends of the auxiliary cable pipe (40) are provided with first bellmouths (41).

4. The offshore wind power cable protection pipe structure according to claim 2, wherein a connecting flange (42) is fixedly connected to the top end of the secondary cable pipe (40), and the connecting flange (42) is detachably and fixedly connected to an anchoring device (60) for fixing a submarine cable (70).

5. The offshore wind power cable protection pipe structure according to claim 1, wherein a guide plate (25) is fixedly connected inside the main cable pipe (20), and a plurality of guide holes (26) are uniformly distributed on the circumference of the guide plate (25).

6. The offshore wind power cable duct structure according to claim 5, wherein the main cable duct (20) has a diameter of 3-5 m.

7. The offshore wind power cable duct structure according to claim 5, wherein the centre of gravity of the jacket (10) is located on the axis of the main cable duct (20).

8. The offshore wind power cable protection pipe structure according to claim 5, wherein one end of the cable bending pipe (50) is communicated with the main cable pipe (20), and a second bell mouth (51) is arranged at the other end of the cable bending pipe (50).