Direct-current submarine compression-resistant cable

Abstract

The utility model belongs to the technical field of submarine cables, in particular to a direct-current submarine compression-resistant cable, which comprises a cable body and is characterized in that a protection assembly is arranged on the outer side of the cable body and comprises a connecting ring connected with a J-shaped protection tube, a plurality of protection sleeve rings, a plurality of movable plates, a plurality of fixed plates and a gravity ball, the connecting ring is fixedly connected with the cable body, the connecting ring is sequentially connected with the plurality of protective lantern rings through the plurality of movable plates and the plurality of fixed plates, and the movable plates are rotatably connected with the protective lantern rings; the suspended section of the cable body can be protected through the protection assembly, the situation that the cable body is broken due to the fact that the bending angle of the suspended section is too small is avoided, and meanwhile the comprehensive length of the protection assembly can change along with the length change of the suspended section of the cable body through the gravity ball. Therefore, the protection assembly can protect the suspended section of the cable body all the time.

Description

Technical Field

[0001] The utility model belongs to the technical field of submarine cables, and particularly relates to a DC submarine compression-resistant cable. Background Technique

[0002] A submarine cable refers to a cable laid on the seabed for transmitting electricity or data. These cables can be used in a variety of applications, including submarine communication, ocean observation, and submarine oil and gas development. To ensure the normal use of the cable on the seabed, submarine cables generally have a certain compressive resistance. The J-shaped protection pipe provides external protection for the submarine cable to prevent it from undergoing large movement and deformation under the action of wave and ocean current loads. However, local scouring on the seabed during the operation period will expose the mud point position of the submarine cable, resulting in the suspension of the submarine cable and affecting its structural strength. Therefore, it is necessary to protect the suspended part at the connection between the submarine cable and the J-shaped protection pipe. Content of the Utility Model

[0003] The utility model provides a DC submarine compression-resistant cable, which has the characteristic that the overall length of the protection component changes with the length of the suspended section of the cable body through the gravity ball, so as to facilitate the protection component to always protect the suspended section of the cable body.

[0004] The utility model provides the following technical solutions: including a cable body, characterized in that: a protection component is arranged on the outer side of the cable body, and the protection component includes a connection ring for connecting with the J-shaped protection pipe, a plurality of protection sleeve rings, a plurality of movable plates, a plurality of fixed plates and a gravity ball. The connection ring is fixedly connected with the cable body. The connection ring and the plurality of protection sleeve rings are sequentially connected through a plurality of movable plates and a plurality of fixed plates. The movable plate is rotatably connected with the protection sleeve ring. The fixed plate is fixedly connected with one side of the protection sleeve ring. The fixed plate is slidably connected inside the movable plate. A plurality of limiting triangular blocks for limiting the movable plate are arranged on the outer side of the protection sleeve ring, and the gravity ball is located at the bottom of the protection sleeve ring farthest from the connection ring.

[0005] Wherein, one of the protection sleeve rings is fixedly connected with the connection ring, and the other plurality of protection sleeve rings are slidably connected on the outer side of the cable body.

[0006] Wherein, a connection shaft is arranged on the outer side of the protection sleeve ring, a through groove is formed on the movable plate, and the connection shaft is rotatably connected inside the through groove.

[0007] Wherein, an engagement groove is formed on the movable plate, an engagement block is arranged on the fixed plate, and the engagement block is slidably connected inside the engagement groove.

[0008] Among them, a connection seat is provided at the bottom of the protective sleeve ring farthest from the connection ring. A connection block is rotatably connected to the inner side of the connection seat. A suspension rope is provided at the bottom of the connection block. The gravity ball is fixedly connected to the bottom of the suspension rope.

[0009] Among them, an arc-shaped limiting plate is provided at the top of the protective sleeve ring.

[0010] The beneficial effects of the present utility model are as follows: The protective component can protect the suspended section of the cable body, avoiding the situation that the cable body breaks due to too small bending angle of the suspended section. At the same time, due to the gravity ball, the overall length of the protective component will change with the length of the suspended section of the cable body, which is beneficial to always protecting the suspended section of the cable body by the protective component.

[0011] Parts not involved in this device are the same as those in the prior art or can be implemented by using the prior art. Description of the Drawings

[0012] Figure 1 is the front view structural schematic diagram of the present utility model;

[0013] Figure 2 is the structural schematic diagram of the protective component in the present utility model;

[0014] Figure 3 is the present utility model Figure 2 is the enlarged view of part A in the present utility model;

[0015] Figure 4 is the present utility model Figure 2 is the enlarged view of part B in the present utility model;

[0016] In the figure: 1. Cable body; 2. Protective component; 21. Connection ring; 22. Protective sleeve ring; 221. Connection shaft; 222. Limiting triangular block; 223. Connection seat; 224. Connection block; 225. Suspension rope; 226. Arc-shaped limiting plate; 23. Movable plate; 231. Connecting groove; 232. Through groove; 24. Fixed plate; 241. Connecting block; 25. Gravity ball. Detailed Embodiment

[0017] Please refer to Figures 1 - 4, the present utility model provides the following technical solutions: It includes a cable body 1, characterized in that: a protection component 2 is provided on the outer side of the cable body 1. The protection component 2 includes a connection ring 21 for connecting with a J-shaped protection tube, a plurality of protection sleeve rings 22, a plurality of movable plates 23, a plurality of fixed plates 24 and gravity balls 25. The connection ring 21 is fixedly connected to the cable body 1. The connection ring 21 is sequentially connected to the plurality of protection sleeve rings 22 through the plurality of movable plates 23 and the plurality of fixed plates 24. The movable plate 23 is rotatably connected to the protection sleeve ring 22. The fixed plate 24 is fixedly connected to one side of the protection sleeve ring 22. The fixed plate 24 is slidably connected to the inner side of the movable plate 23. A plurality of limiting triangular blocks 222 for limiting the movable plate 23 are provided on the outer side of the protection sleeve ring 22, and the gravity ball 25 is located at the bottom of the protection sleeve ring 22 farthest from the connection ring 21.

[0018] In this implementation: It includes a cable body 1. Submarine cables refer to cables laid on the seabed, which are used to transmit electricity or data. These cables can be used in a variety of applications, including submarine communication, ocean observation, and offshore oil and gas development. The material of the cable body 1 has a compressive effect. A protective component 2 is provided on the outer side of the cable body 1. The J-shaped protective pipe provides external protection for the submarine cable to prevent it from having large movement and deformation under the action of wave and current loads. However, local scour on the seabed during the operation period changes the mud-exiting point position of the submarine cable, resulting in the suspension of the submarine cable and affecting its structural strength. By setting the protective component 2 at the suspended part of the cable body 1, the suspended part of the cable body 1 can be protected to avoid the situation where the cable body 1 breaks due to excessive change in the bending angle caused by the change in the suspended length of the cable body 1. The protective component 2 includes a connection ring 21 for connecting with the J-shaped protective pipe, several protective sleeve rings 22, several movable plates 23, several fixed plates 24, and a gravity ball 25. The connection ring 21 is fixedly connected to the cable body 1. The connection ring 21 is fixedly connected to the cable body 1, and at the same time, the connection ring 21 is connected to the bell mouth of the J-shaped protective pipe, so that the cable body 1 can be connected to the bell mouth of the J-shaped protective pipe. The connection ring 21 and several protective sleeve rings 22 are sequentially connected through several movable plates 23 and several fixed plates 24. Through the connection of the movable plates 23 and the fixed plates 24 to several protective sleeve rings 22, several protective sleeve rings 22 can be located outside the suspended section of the cable body 1. The movable plate 23 is rotatably connected to the protective sleeve ring 22. When the length of the suspended section of the cable body 1 changes, the bending angle of the suspended section of the cable body 1 will also change. Several movable plates 23 will rotate with the change in the bending angle of the cable body 1. The fixed plate 24 is fixedly connected to one side of the protective sleeve ring 22. The fixed plate 24 is slidably connected to the inside of the movable plate 23. As the length of the suspended section of the cable body 1 changes, several fixed plates 24 will slide with the movable plate 23. Several limiting triangular blocks 222 for limiting the movable plate 23 are provided on the outer side of the protective sleeve ring 22. Limiting triangular blocks 222 are provided at the top and bottom of the movable plate 23. Through the limiting triangular blocks 222, the rotation angle of the movable plate 23 can be limited, so as to limit the bending angle of the suspended section of the cable body 1 and avoid the situation where the cable body 1 breaks due to too small bending angle of the suspended section. And the gravity ball 25 is located at the bottom of the protective sleeve ring 22 farthest from the connection ring 21. When the suspended section of the cable body 1 grows, the gravity of the gravity ball 25 will drive the protective sleeve ring 22 to slide downward, so that the protective component 2 always protects the suspended section of the cable body 1. Through the protective component 2, the suspended section of the cable body 1 can be protected to avoid the situation where the cable body 1 breaks due to too small bending angle of the suspended section. At the same time, due to the gravity ball 25, the overall length of the protective component 2 will change with the change in the length of the suspended section of the cable body 1.This is conducive to enabling the protection component 2 to always protect the suspended section of the cable body 1.

[0019] One of the protective collar rings 22 is fixedly connected to the connecting ring 21, and several other protective collar rings 22 are slidably connected to the outside of the cable body 1; as the several protective collar rings 22 slide, the positions of the several protective collar rings 22 can change.

[0020] A connecting shaft 221 is provided on the outside of the protective collar ring 22, a through groove 232 is formed on the movable plate 23, and the connecting shaft 221 is rotatably connected to the inside of the through groove 232; when the length of the suspended section of the cable body 1 changes, the bending angle at the suspended part of the cable body 1 will also change, and the movable plate 23 will rotate accordingly.

[0021] An engaging groove 231 is formed on the movable plate 23, an engaging block 241 is provided on the fixed plate 24, and the engaging block 241 is slidably connected to the inside of the engaging groove 231; through the connection between the engaging block 241 and the engaging groove 231, the situation where the fixed plate 24 and the movable plate 23 are completely separated can be avoided.

[0022] A connecting seat 223 is provided at the bottom of the protective collar ring 22 farthest from the connecting ring 21, a connecting block 224 is rotatably connected to the inside of the connecting seat 223, a suspension rope 225 is provided at the bottom of the connecting block 224, and a gravity ball 25 is fixedly connected to the bottom of the suspension rope 225; through the connection of the suspension rope 225, the connecting block 224 and the connecting seat 223, the gravity ball 25 hangs at the bottom of the protective collar ring 22, so that the protection component 2 can be driven to extend to the lowest position of the suspended section.

[0023] An arc-shaped limiting plate 226 is provided at the top of the protective collar ring 22; through several arc-shaped limiting plates 226, the bending angle of the suspended section of the cable body 1 can be further limited, and the situation of fracture caused by too small bending angle can be avoided.

[0024] The working principle and usage process of the present utility model: When in use, when the local scouring of seawater causes a suspended section to appear at the position of the cable body 1 at the bottom of the bell mouth of the J-shaped protection pipe, the gravity ball 25 can drive the protection component 2 to extend along with the change of the length of the suspended section of the cable body 1, so that the protection component 2 can always protect the suspended section of the cable body 1. When the length of the suspended section of the cable body 1 changes, the bending angle of the suspended section of the cable body 1 will also change, and several movable plates 23 will rotate along with the change of the bending angle of the cable body 1. The rotation angle of the movable plate 23 can be limited by the limiting triangular block 222, so as to limit the bending angle of the suspended section of the cable body 1 and avoid the situation that the cable body 1 breaks due to too small bending angle of the suspended section. The bending angle of the suspended section of the cable body 1 can be further limited by several arc-shaped limiting plates 226.

Claims

1. A DC submarine pressure-resistant cable, comprising a cable body (1), characterized in that: A protective assembly (2) is provided on the outer side of the cable body (1), and the protective assembly (2) comprises a connecting ring (21) for connecting to the J-shaped protective tube, a plurality of protective sleeve rings (22), a plurality of movable plates (23), a plurality of fixed plates (24) and a gravity ball (25). The connecting ring (21) is fixedly connected to the cable body (1), and the connecting ring (21) and the plurality of protective sleeve rings (22) are connected by a plurality of movable plates (23) and a plurality of fixed plates (24). The movable plate (23) is rotatably connected to the protective collar (22), the fixed plate (24) is fixedly connected to one side of the protective collar (22), the fixed plate (24) is slidably connected to the inner side of the movable plate (23), a plurality of limiting triangle blocks (222) for limiting the movable plate (23) are provided on the outer side of the protective collar (22), and the gravity ball (25) is located at the bottom of the protective collar (22) farthest from the connecting ring (21).

2. A DC submarine pressure-resistant cable according to claim 1, characterized in that: One of the protective sleeve rings (22) is fixedly connected to the connecting ring (21), and the other plurality of protective sleeve rings (22) are slidably connected to the outside of the cable body (1).

3. A DC submarine pressure-resistant cable according to claim 2, characterized in that: A connecting shaft (221) is provided on the outer side of the protective collar (22), a through slot (232) is provided on the movable plate (23), and the connecting shaft (221) is rotatably connected to the inner side of the through slot (232).

4. A DC submarine pressure-resistant cable according to claim 3, characterized in that: The movable plate (23) is provided with a connection groove (231), and the fixed plate (24) is provided with a connection block (241), and the connection block (241) is slidably connected to the inner side of the connection groove (231).

5. A DC submarine pressure-resistant cable according to claim 4, characterized in that: A connecting seat (223) is provided at the bottom of the protective collar (22) which is farthest from the connecting ring (21); a connecting block (224) is rotatably connected to the inner side of the connecting seat (223); a hanging rope (225) is provided at the bottom of the connecting block (224); and the gravity ball (25) is fixedly connected to the bottom of the hanging rope (225).

6. A DC submarine pressure-resistant cable according to claim 5, characterized in that: An arc-shaped limiting plate (226) is provided on the top of the protective collar (22).

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