CN215419517U

CN215419517U - Telescopic submarine cable protection device

Info

Publication number: CN215419517U
Application number: CN202121000218.9U
Authority: CN
Inventors: 王朋; 陈金龙; 郗元; 李新华; 董文涛
Original assignee: Panjin Institute of Industrial Technology Dalian University of Technology DUT
Current assignee: Panjin Institute of Industrial Technology Dalian University of Technology DUT
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2022-01-04
Anticipated expiration: 2031-05-12

Abstract

The utility model relates to the technical field of marine flexible pipe cable protection, and provides a telescopic rod type submarine cable protection device, which comprises: the device comprises a guide head, an anti-bending device, a shrinkage rod connecting piece, a tailstock and a bending limiter; the guide head is fixedly bolted with the bending preventer, the bending preventer is fixedly bolted with the shrinkage rod connecting piece, the shrinkage rod connecting piece is fixedly bolted with the tailstock, and the tailstock is connected with the bending limiter in a matching way; the guide head, the bending prevention device, the shrinkage rod connecting piece, the tailstock and the bending limiter are all of hollow structures and are used for enabling the submarine cable to pass through; a plurality of key grooves which are arranged in a multilayer staggered manner are arranged at one end of the shrinkage rod connecting piece close to the bending preventer in the circumferential direction; a telescopic rod device is arranged in each key groove; the pole device contracts includes: the telescopic rod, the elastic component and the positioning bolt; the shrinkage rod is embedded in the key groove through a positioning bolt; the elastic component is positioned at the bottom of the key groove and is contacted with the lower surface of the shrinkage rod. The utility model can protect the pile-entering section of the submarine cable and effectively ensure the safe operation of the submarine cable for a long time.

Description

Telescopic submarine cable protection device

Technical Field

The utility model relates to the technical field of marine flexible pipe cable protection, in particular to a telescopic rod type submarine cable protection device.

Background

With the emphasis on clean energy, the offshore wind power industry has stepped into a rapid development period, and the application of the flexible submarine cable as a blood vessel of offshore wind power is more extensive. Offshore wind turbines are arranged on the platform boards, the platform boards are supported by single pile foundations, and the offshore wind turbines and the power stations are connected through sea cables. When a submarine cable is led to the platform plate from the lower part of the sea surface and is connected with an offshore wind turbine, the submarine cable needs to penetrate through the single-pile cable opening, and suspended sections exist inside and outside the single-pile cable opening and are easily bent or even damaged under the action of ocean external load. Therefore, a submarine cable protection device needs to be installed for protection.

In the prior art, a J-shaped pipe bell mouth is additionally arranged at a single pile opening, and a half-type metal center clamp is adopted to protect a cable. The J-shaped pipe bell mouth in the prior art is high in cost and difficult to install and transport, and is easy to rub against the J-shaped pipe in the installation process of the submarine cable, so that the installation resistance is large, and meanwhile, the safe operation of the submarine cable is difficult to effectively guarantee for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the technical problems that a J-shaped pipe-center clamp protection device in the prior art is difficult to install and is difficult to effectively guarantee safe operation of a submarine cable for a long time, and the like, and provides a telescopic type submarine cable protection device which can be directly clamped and fixed in a cable opening formed on a single pile foundation of a fan, can protect the submarine cable through an anti-bending device at the upper end part of the device and a bending limiter at the lower end part of the device, and can effectively guarantee safe operation of the submarine cable for a long time.

The utility model provides a telescopic type submarine cable protection device, which comprises: the device comprises a guide head, an anti-bending device, a shrinkage rod connecting piece, a tailstock and a bending limiter;

the guide head is fixedly bolted with the bending preventer, the bending preventer is fixedly bolted with the shrinkage rod connecting piece, the shrinkage rod connecting piece is fixedly bolted with the tailstock, and the tailstock is connected with the bending limiter in a matching way; the guide head, the bending prevention device, the shrinkage rod connecting piece, the tailstock and the bending limiter are all of hollow structures and are used for enabling a submarine cable to pass through;

a plurality of key grooves which are arranged in a multilayer staggered manner are formed in the circumferential direction at one end of the shrinkage rod connecting piece close to the bending preventer; a telescopic rod device is arranged in each key groove;

the rod retracting device comprises: the telescopic rod, the elastic component and the positioning bolt; the shrinkage rod is embedded in the key groove through a positioning bolt; the elastic component is positioned at the bottom of the key groove and is in contact with the lower surface of the shrinkage rod.

Furthermore, an annular groove is formed in the inner wall of the end, close to the bending limiter, of the telescopic rod connecting piece; and a cathode protection device is arranged in the annular groove.

Furthermore, the upper surface of the sliding-out part of the telescopic rod is of an arc structure, and the lower surface of the sliding-out part of the telescopic rod is of an L-shaped structure.

Furthermore, the guide head, the bending prevention device, the rod contracting connecting piece, the tail seat and the bending limiter are all made of corrosion-resistant materials.

Further, under the action of no external force, the maximum external diameter of the rod-contracting device is larger than the diameter of a cable hole on the single-pile foundation of the fan; under the action of external force, the shrinkage rod slides into the key groove, and the outer diameter of the shrinkage rod connecting piece is smaller than the diameter of a cable hole on the single-pile foundation of the fan.

Furthermore, the maximum diameter of the tailstock is more than 1.2 times larger than the diameter of the cable opening on the single-pile foundation of the fan.

Further, the elastic component is a spring ball, a spring or other elastic bodies.

Furthermore, the middle part of the part, extending into the key groove, of the telescopic rod is provided with a long hole.

Compared with the prior art, the telescopic-rod-type submarine cable protection device provided by the utility model can be directly clamped and fixed in a cable opening hole formed on a single-pile foundation of a fan, the submarine cable can be protected by the anti-bending device at the upper end part of the device and the bending limiter at the lower end part of the device, and the safe operation of the submarine cable can be effectively ensured for a long time.

Drawings

Fig. 1 is a schematic view of the overall structure of a telescopic submarine cable protection device according to the present invention;

FIG. 2 is a schematic view of the internal structure of the retractable submarine cable protection device according to the present invention;

fig. 3 is a schematic structural diagram of the rod retracting device provided by the utility model.

Reference numerals: 1. a guide head; 2. a bend preventer; 3. a rod-contracting connecting piece; 4. a tailstock; 5. a bending limiter; 6. a sea cable; 7. a rod retracting device; 8. a cathodic protection device; 9. shrinking the rod; 10. an elastic component; 11. and (6) positioning the bolt.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings.

As shown in fig. 1 and 2, a telescopic sea cable protection device provided by an embodiment of the present invention includes: the device comprises a guide head 1, an anti-bending device 2, a shrinkage rod connecting piece 3, a tailstock 4 and a bending limiter 5.

The guide head 1 and the bending preventer 2 are fixedly bolted, the bending preventer 2 and the shrinkage rod connecting piece 3 are fixedly bolted, the shrinkage rod connecting piece 3 and the tailstock 4 are fixedly bolted, and the tailstock 4 and the bending limiter 5 are connected in a matching manner; the guide head 1, the bending prevention device 2, the shrinkage rod connecting piece 3, the tail seat 4 and the bending limiter 5 are all of hollow structures and are used for enabling a submarine cable 6 to pass through; thereby playing the role of protecting the submarine cable. In this embodiment, the guide head 1, the bending prevention device 2, the rod-contracting connecting piece 3, the tailstock 4 and the bending limiter 5 are all made of corrosion-resistant materials, so that the structure of the present invention is stable and the service life is long.

A plurality of key grooves which are arranged in a multilayer staggered manner are formed in the circumferential direction at one end of the shrinkage rod connecting piece 3 close to the bending prevention device 2; a telescopic rod device 7 is arranged in each key groove;

as shown in fig. 3, the lever mechanism 7 includes: the telescopic rod 9, the elastic component 10 and the positioning bolt 11; the shrinkage rod 9 is embedded in the key groove through a positioning bolt 11; the elastic component 10 is positioned at the bottom of the key groove and is in contact with the lower surface of the shrinkage rod 9. So that the sliding block can slide in a limiting way and cannot slide out of the key groove; the upper surface of the sliding-out part of the shrinkage rod 9 adopts an arc-shaped structure, so that the locking phenomenon of the shrinkage rod in the dragging process of the seabed is avoided. The lower surface of the sliding-out part of the shrinkage rod 9 adopts an L-shaped structure, so that the shrinkage rod can be better matched with a single pile hole, and a better fixing effect is achieved. The middle of the part, extending into the key groove, of the shrinkage rod 9 is provided with a long hole, the positioning bolt 11 penetrates through the long hole to arrange the shrinkage rod 9 in the key groove, and the shrinkage rod 9 is matched with the positioning bolt 11 through the long hole to realize up-and-down sliding and limiting effects.

In this embodiment, the elastic component 10 plays a role of supporting the telescopic rod 9, so that the telescopic rod 9 slides out of the key slot when no external force acts on the telescopic rod, and under the action of the external force, the elastic component 10 is compressed, so that the telescopic rod 9 slides into the key slot; the spring assembly 10 may perform this function with spring balls, springs, or other elastomers.

The inner wall of the end of the telescopic rod connecting piece 3 close to the bending limiter 5 is provided with an annular groove; and a cathode protection device 8 is arranged in the annular groove, and the cathode protection device 8 can effectively resist seawater environment corrosion and prolong the service life of the device.

In the rod-contracting type submarine cable protection device of the embodiment, the maximum outer diameter of the rod-contracting connecting piece 3 is larger than the diameter of a cable hole on a single pile foundation of a fan under the condition that the rod-contracting device 7 has no external force; under the action of external force, the shrinkage rod 9 slides into the key groove, and the outer diameter of the shrinkage rod connecting piece 3 is smaller than the diameter of a cable hole on the single-pile foundation of the fan. Specifically, the maximum diameter of the tailstock 4 is more than 1.2 times larger than the diameter of a cable opening on the single-pile foundation of the fan.

The utility model provides a pole type undersea cable protection device contracts, the application on offshore wind turbine single pile basis drags this pole type undersea cable protection device in the cable trompil on wind turbine single pile basis, fixes in cable trompil department through pole device 7 card. The action principle is as follows: this embodiment sets up the compression bar device 7 on compression bar connecting piece 3, and when the device got into the stake hole, compression bar 9 received the pressure of pore wall, slided into the keyway for the device continues to get into the stake hole, and after the pore wall passed through compression bar 9 and is located the position, compression bar 9 received elastic component 10's thrust, slided back to original position. When the tailstock 4 contacts the hole wall, the device is installed in place, the traction device is separated, the device moves back under the action of gravity, the contraction rod 9 is fixedly clamped with the hole wall in a contact mode, the device is integrally fixed at the opening, and the protection effect on the submarine cable at the opening and the inner and outer suspension sections is achieved.

The using method comprises the following steps: when the submarine cable is installed on the single-pile foundation of the fan, firstly, the rod-contracting type submarine cable protection device is used for connecting and fixing the anti-bending device 2, the rod-contracting connecting piece 3 and the tail seat 4 according to the sequence of figure 1; then installing a traction sleeve at the end of the submarine cable and penetrating the traction sleeve into the protection device; then the traction sleeve is connected with the guide head 1; then moving the submarine cable backwards for a certain distance, and connecting the guide head 1 with the anti-bending device 2; and finally, connecting a traction rope with the guide head 1, dragging the whole telescopic rod type submarine cable protection device and the submarine cable to launch and pile by the traction rope, and clamping the device to the opening to play a role in protection.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some or all technical features may be made without departing from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A telescopic sea cable protection device, comprising: the device comprises a guide head (1), an anti-bending device (2), a shrinkage rod connecting piece (3), a tail seat (4) and a bending limiter (5);

the guide head (1) is fixedly connected with the bending preventer (2) in a bolted mode, the bending preventer (2) is fixedly connected with the shrinkage rod connecting piece (3) in a bolted mode, the shrinkage rod connecting piece (3) is fixedly connected with the tailstock (4) in a bolted mode, and the tailstock (4) is connected with the bending limiter (5) in a matched mode; the guide head (1), the anti-bending device (2), the shrinkage rod connecting piece (3), the tail seat (4) and the bending limiter (5) are all of hollow structures and are used for enabling a submarine cable (6) to penetrate through the hollow structures;

a plurality of key grooves which are arranged in a multilayer staggered manner are formed in the circumferential direction at one end, close to the anti-bending device (2), of the shrinkage rod connecting piece (3); a telescopic rod device (7) is arranged in each key groove;

the rod retracting device (7) comprises: the telescopic rod (9), the elastic component (10) and the positioning bolt (11); the shrinkage rod (9) is embedded in the key groove through a positioning bolt (11); the elastic component (10) is positioned at the bottom of the key groove and is in contact with the lower surface of the shrinkage rod (9).

2. A telescopic sea cable protection device according to claim 1, characterized in that the telescopic connector (3) is provided with an annular groove near the inner wall of the end of the bending limiter (5); and a cathode protection device (8) is arranged in the annular groove.

3. A rod-retracting type submarine cable protection according to claim 1 or 2, wherein the upper surface of the sliding-out part of the retraction rod (9) is of an arc-shaped structure, and the lower surface of the sliding-out part of the retraction rod (9) is of an L-shaped structure.

4. A telescopic sea cable protection device according to claim 1, characterized in that the guide head (1), the bending preventer (2), the telescopic connector (3), the tail seat (4) and the bending limiter (5) are made of corrosion resistant material.

5. A rod-contracting type submarine cable protecting device according to claim 1, wherein the maximum outer diameter of the rod-contracting connecting piece (3) of the rod-contracting device (7) is larger than the diameter of a cable opening on a single-pile foundation of a fan without external force; under the action of external force, the shrinkage rod (9) slides into the key groove, and the outer diameter of the shrinkage rod connecting piece (3) is smaller than the diameter of a cable hole on the single-pile foundation of the fan.

6. A rod-contracting type submarine cable protecting apparatus according to claim 5, wherein the maximum diameter of the tailstock (4) is more than 1.2 times larger than the diameter of the cable opening on the fan mono-pile foundation.

7. A telescopic sea cable protection device according to claim 1, characterized in that the telescopic rod (9) is provided with a long hole in the middle of the key way part.