A submarine cable protection device

Abstract

This invention provides a submarine cable protection device that solves the problem of poor versatility in existing submarine cable center positioning protectors. It also includes a limiting ring on the cylindrical part; waist holes evenly distributed around the circumference of the limiting ring; a limiting plate on one side of the limiting ring, with through holes corresponding to the waist holes; a bolt on the other side of the limiting ring, with its threaded section passing through the waist holes and the through holes; and a locking nut on the threaded section of the bolt. When the diameter of the housing is smaller than the inner diameter of the submarine cable sheath, the locking nut is loosened, the bolt moves within the waist holes, and drives the limiting plate to move away from the housing relative to the limiting ring until the top surface of the limiting plate contacts the inner wall of the submarine cable sheath. Then, the locking nut is tightened, allowing the housing to be secured inside the submarine cable sheath. By adjusting the limiting plate, the device can be fitted with submarine cable sheaths within a certain inner diameter range, resulting in good versatility.

Description

Technical Field

[0001] This utility model relates to the field of submarine cable protection technology, specifically to a submarine cable protection device. Background Technology

[0002] With the continuous advancement of marine energy development and submarine communication construction, submarine cables, as key carriers of energy transmission and signal transmission, are of paramount importance for their safe operation. Submarine cables for oil platforms or offshore wind power projects are threaded from the seabed to the platform through rigid conduits. To ensure smooth installation, the inner diameter of the conduit is typically 2-3 times the outer diameter of the cable. Therefore, the cable can swing freely within the conduit, especially at the lower exit point where it is most severely affected by ocean currents. Under the influence of these currents, the cable swings continuously and collides with the conduit. Over time, this can cause fatigue damage to the cable, rendering it unable to transmit power and ultimately paralyzing the entire power system, resulting in significant economic losses. To prevent collisions between submarine cables and sheaths, the commonly used method in the market is the use of submarine cable center positioning protectors (the structure of which is disclosed in Chinese Patent Publication No. CN210380186U). These protectors center the submarine cable, and then the protector is secured inside the sheath, achieving cable centering within the sheath. However, due to variations in the diameter of the sheaths, and the fixed diameter of existing submarine cable center positioning protectors, they suffer from poor versatility and cannot be securely fastened within the sheath. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a submarine cable protection device, which solves the problem of poor versatility of existing submarine cable center positioning protectors.

[0004] The technical solution adopted in this utility model is as follows: A submarine cable protection device includes a housing composed of two symmetrical parts, the housing including a conical portion and a cylindrical portion, the housing having a central hole, and further comprising: A limit ring is provided on the cylindrical part; Waist holes are evenly distributed around the circumference of the limiting ring; A limiting plate is provided on one side of the limiting ring, and the limiting plate is provided with a through hole corresponding to the waist hole; A bolt is located on the other side of the limiting ring, and the threaded section of the bolt passes through the waist hole and the through hole; The lock nut is placed on the threaded section of the bolt.

[0005] The top surface of the limiting plate is provided with a rubber layer, and the top surface of the rubber layer is inclined.

[0006] The limiting ring is also provided with a limiting groove, and the limiting plate is provided with a limiting rod for cooperating with the limiting groove.

[0007] The surface of the central hole is provided with an elastic anti-slip layer.

[0008] The four limiting plates are evenly distributed around the circumference of the limiting ring.

[0009] The locking nut is a hand-tightening nut.

[0010] A bending limiter is connected to the rear end of the housing, and a connecting groove is provided at the rear end of the housing. The front end of the bending limiter is provided with an annular portion for engaging with the connecting groove.

[0011] The beneficial effects of this utility model are: When the diameter of the shell is smaller than the inner diameter of the cable conduit, loosen the locking nut, and the bolt moves in the waist hole, causing the limiting plate to move away from the shell relative to the limiting ring until the top surface of the limiting plate contacts the inner wall of the cable conduit. Then tighten the locking nut to lock the shell inside the cable conduit. The device can be matched with cable conduits with an inner diameter within a certain range by adjusting the limiting plate, and it has good versatility. Attached Figure Description

[0012] Figure 1 This is a cross-sectional schematic diagram of the present invention.

[0013] Figure 2 This is a schematic diagram of the front of this utility model.

[0014] 1. Conical part; 2. Cylindrical part; 3. Center hole; 4. Limiting ring; 5. Waist hole; 6. Limiting plate; 7. Bolt; 8. Locking nut; 9. Rubber layer; 10. Limiting groove; 11. Limiting rod; 12. Elastic anti-slip layer; 13. Bending limiter; 14. Connecting groove; 15. Annular part. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: In the embodiments, such as Figure 1 , Figure 2 As shown, a submarine cable protection device includes a housing composed of two symmetrical parts. The housing includes a conical portion 1 and a cylindrical portion 2. The housing has a central hole 3 and further includes: A limiting ring 4 is provided on the cylindrical part 2; Waist holes 5 are evenly distributed around the circumference of the limiting ring 4; A limiting plate 6 is provided on one side of the limiting ring 4, and the limiting plate 6 is provided with a through hole corresponding to the waist hole 5; Bolt 7 is located on the other side of the limiting ring 4, and the threaded section of the bolt 7 passes through the waist hole 5 and the through hole; Lock nut 8 is set on the threaded section of bolt 7.

[0016] The through hole on the limiting plate 6 matches the diameter of the bolt 7. The top surface of the limiting plate 6 is an arc-shaped surface. When the diameter of the shell is smaller than the inner diameter of the submarine cable sheath, the locking nut 8 is loosened, and the bolt 7 moves in the waist hole 5, driving the limiting plate 6 to move away from the shell relative to the limiting ring until the top surface of the limiting plate 6 contacts the inner wall of the submarine cable sheath. Then the locking nut 8 is tightened, so that the shell can be stuck in the submarine cable sheath. By adjusting the limiting plate 6, the device can be matched with submarine cable sheaths with an inner diameter within a certain range, which has good versatility.

[0017] In the embodiments, such as Figure 1 , Figure 2 As shown, the top surface of the limiting plate 6 is provided with a rubber layer 9, and the top surface of the rubber layer 9 is inclined. The rubber layer 9 has a certain elasticity and contacts the inner wall of the submarine cable sheath, so that the limiting plate 6 and the submarine cable sheath are in an interference fit, ensuring that the shell will not move easily inside the submarine cable sheath.

[0018] In the embodiments, such as Figure 2 As shown, the limiting ring 4 is also provided with a limiting groove 10, and the limiting plate 6 is provided with a limiting rod 11 for cooperating with the limiting groove 10. This ensures the linearity of the vertical movement of the limiting plate 6 and ensures that the top surface of the limiting plate is in complete contact with the inner wall of the submarine cable sheath.

[0019] In the embodiments, such as Figure 1 , Figure 2 As shown, the surface of the central hole 3 is provided with an elastic anti-slip layer 12. The elastic anti-slip layer 12 is made of thermoplastic elastomer material, which has high elasticity and wear resistance, and can effectively wrap the submarine cable while ensuring that the submarine cable does not easily slide relative to the central hole 3, thus effectively fixing the submarine cable in the shell.

[0020] In the embodiments, such as Figure 2 As shown, the four limiting plates 6 are evenly distributed around the circumference of the limiting ring 4. The limiting plates 6 are in contact with the inner wall around the submarine cable sheath, ensuring the stability of the device and preventing it from shifting inside the submarine cable sheath.

[0021] In the embodiments, such as Figure 1 As shown, the locking nut 8 is a hand-tightening nut. The locking nut 8 can be adjusted without tools, making adjustment convenient.

[0022] In the embodiments, such as Figure 1 As shown, a bend limiter 13 is connected to the rear end of the housing, and a connecting groove 14 is provided at the rear end of the housing. The front end of the bend limiter 13 is provided with an annular portion 15 for engaging with the connecting groove 14. Multiple bend limiters 13 can be connected front to back. The bend limiters 13 can prevent the submarine cable from bending or folding excessively, thus avoiding damage to the submarine cable.

[0023] Obviously, the above embodiments of this utility model are merely illustrative examples and not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, these obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A submarine cable protection device, comprising a housing composed of two symmetrical parts, the housing including a conical portion (1) and a cylindrical portion (2), the housing having a central hole (3), characterized in that, Also includes: A limiting ring (4) is provided on the cylindrical part (2); Waist holes (5) are evenly distributed around the circumference of the limiting ring (4); A limiting plate (6) is provided on one side of the limiting ring (4), and the limiting plate (6) is provided with a through hole corresponding to the waist hole (5); Bolt (7) is located on the other side of the limiting ring (4), and the threaded section of the bolt (7) passes through the waist hole (5) and the through hole; The lock nut (8) is set on the threaded section of the bolt (7).

2. The submarine cable protection device as described in claim 1, characterized in that: The top surface of the limiting plate (6) is provided with a rubber layer (9), and the top surface of the rubber layer (9) is an inclined surface.

3. The submarine cable protection device as described in claim 1, characterized in that: The limiting ring (4) is also provided with a limiting groove (10), and the limiting plate (6) is provided with a limiting rod (11) for cooperating with the limiting groove (10).

4. The submarine cable protection device as described in claim 1, characterized in that: The surface of the central hole (3) is provided with an elastic anti-slip layer (12).

5. A submarine cable protection device as described in claim 1, characterized in that: The four limiting plates (6) are evenly distributed around the circumference of the limiting ring (4).

6. The submarine cable protection device as described in claim 1, characterized in that: The locking nut (8) is a hand-tightening nut.

7. A cable protection device according to claim 1, characterised in that: The rear end of the housing is connected to a bending limiter (13), the rear end of the housing is provided with a connecting groove (14), and the front end of the bending limiter (13) is provided with an annular portion (15) for cooperating with the connecting groove (14).

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