CN210113695U

CN210113695U - Submarine cable protection device

Info

Publication number: CN210113695U
Application number: CN201921062767.1U
Authority: CN
Inventors: 谢飞翔; 刘勇; 李留罐
Original assignee: Suzhou Xibeiyou Marine Engineering Equipment Co Ltd
Current assignee: Suzhou Xibeiyou Marine Engineering Equipment Co Ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-02-25
Anticipated expiration: 2029-07-09

Abstract

The utility model discloses a submarine cable protection device, which is sleeved outside a submarine cable to protect the submarine cable, and comprises a clamp body and a bending limiter, wherein the clamp body can penetrate through the tower barrel of an air inlet fan to fix the submarine cable; the clamp body comprises a main body and a plurality of clamping jaws, wherein the main body is provided with a plurality of grooves along the circumferential direction of the main body, and the clamping jaws can be embedded in the grooves; the clamping jaw comprises a body and an elastic piece fixed with the body, the body is rotatably connected with the main body, and the elastic piece can be contacted with the bottom wall of the groove so as to realize the assembly of the clamp body and the fan tower drum by utilizing the deformation of the elastic piece; the bend limiter comprises a straight section part and a bent end part connected with the straight section part, and the straight section part is connected with the clamp body. The utility model discloses can strengthen the fixed effect of submarine cable.

Description

Submarine cable protection device

Technical Field

The utility model relates to a marine cable technical field, concretely relates to submarine cable protection device.

Background

Marine cables are wires wrapped with insulating materials and laid on the sea floor to establish important communication equipment between countries, islands and inland, oil platforms and inland, cross-sea military facilities and other places. With the increasing demand for energy in China, the development strength of ocean oil gas and offshore wind power is also rapidly increased. As an important medium of power transmission, the safety and reliability of the submarine cable in use are important. The oil platform or offshore wind power submarine cable is smoothly threaded from the seabed to the upper part of the platform through a rigid J-shaped protective pipe, the inner diameter of the submarine cable protective pipe is generally about 3 times of the outer diameter of the submarine cable, and the bottom inlet part is in a bell mouth shape. Because pillar and submarine cable size characteristics, the submarine cable can freely swing in the pillar after the installation, especially at pillar lower extreme exit, and this department submarine cable receives ocean current to influence most acutely, can incessantly swing under the ocean current effect, constantly collides the pillar simultaneously, can cause the fatigue damage of cable under the long-time effect, causes the unable transmission of electricity of cable, finally leads to whole electric power system paralysis to cause huge economic loss.

The current commonly used protection method is to install a central positioning protection device on the submarine cable at the tail part of the J-shaped pipe, wherein the central positioning protection device holds the submarine cable tightly and is clamped in the straight pipe section of the J-shaped pipe, so that the submarine cable is positioned at the central position of the J-shaped pipe. A bending protection device is connected to the tail of the positioning protection device, and a polyurethane or metal bending limiter protects the submarine cable from being excessively bent to cause damage. Due to the strong erosion capacity of the sea currents, the length of the bending limiters is generally more than 8m, the length of the whole set of centrally positioned protection devices is close to or more than 10m, and the protection devices and the cables swing like long snakes in the water along with the action of the currents and the gushes.

The whole protection device is fixed on the cable by means of the polyurethane sealing ring clamped in the J-shaped pipe section and the friction force of the clamping cable, the friction force is reduced due to the aging of the polyurethane sealing ring in a period of time, the fixing capacity of the whole protection device and the J-shaped pipe is weakened, the protection device is simultaneously limited by the installation requirement, the cable is not tight inside the protection pipe, and the whole protection device is withdrawn backwards from the installation position due to the reduction of the friction force of the fixed sealing ring. Because the installation position of the sealing device is not far away from the end of the J-shaped pipe, if the cable is loose more, particularly in a water depth area, the whole protection device can be separated from the end bell mouth of the J-shaped pipe. Once the device is separated, the protection function of the cable is lost, the bending load of the cable outside the bell mouth is increased, and the cable can be damaged too early due to the fact that the cable cannot be repaired in time, so that serious loss is caused.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a submarine cable protection device, its fixed effect that can strengthen the submarine cable.

In order to solve the technical problem, the utility model provides a submarine cable protection device, which is sleeved outside a submarine cable to protect the submarine cable, and comprises a clamp body and a bending limiter, wherein the clamp body can penetrate through the tower barrel of an air inlet fan to fix the submarine cable; the clamp body comprises a main body and a plurality of clamping jaws, wherein the main body is provided with a plurality of grooves along the circumferential direction of the main body, and the clamping jaws can be embedded in the grooves; the clamping jaw comprises a body and an elastic piece fixed with the body, the body is rotatably connected with the main body, and the elastic piece can be contacted with the bottom wall of the groove so as to realize the assembly of the clamp body and the fan tower drum by utilizing the deformation of the elastic piece; the bend limiter comprises a straight section part and a bent end part connected with the straight section part, and the straight section part is connected with the clamp body.

Further, the fixture body comprises a first main body and a second main body spliced with the first main body, and the first main body and the second main body are both arranged in an arc shape; the first main body and the second main body are provided with the grooves, and the grooves are arranged in a staggered mode.

Furthermore, the submarine cable protection device also comprises a bending prevention device sleeved outside the submarine cable, and the bending prevention device is connected with the free end of the clamp body; and a steel wire rope is arranged at the free end of the bending preventer, and part of the steel wire rope is encapsulated in the bending preventer.

Further, the straight section part is sequentially spliced by a plurality of first bending limiters, and each first bending limiter comprises a first half tile and a second half tile spliced with the first half tile; the first bending limiter comprises a first connecting part and a second connecting part, the first connecting part can be embedded in the second connecting part to connect the adjacent first bending limiters, and the end face of the first connecting part is a plane.

Furthermore, the bent end parts are sequentially spliced by a plurality of second bending limiters, and each second bending limiter comprises a third half tile and a fourth half tile spliced with the third half tile; the second bending limiter comprises a third connecting portion and a fourth connecting portion, the third connecting portion can be embedded in the fourth connecting portion to connect the adjacent second bending limiter, and the end face of the third connecting portion is an arc face to adapt to the bending radius of the bent section portion.

Further, the clamp body is connected with the bend limiter through a connecting piece, and the end part of the connecting piece, which is connected with the clamp body, is in a conical arrangement.

Further, the upper surface of body is including being located both sides and being the arc portion that the arc set up, the diameter of arc portion is less than or equal to the external diameter of anchor clamps body.

Further, the elastic piece is an elastic ring or an arc-shaped elastic sheet.

Furthermore, the material of the submarine cable protection device is a corrosion-resistant material.

Furthermore, the outer wall and the inner wall of the bending preventer are both arranged in a taper manner.

The utility model has the advantages that:

the submarine cable penetrates into the clamp body and the bend limiter, and then the clamp body penetrates into the air inlet fan tower barrel, so that the submarine cable is fixed; because the clamping jaws embedded in the grooves are rotationally connected with the main body and the elastic pieces can be contacted with the bottom walls of the grooves, the thrust can be applied to the clamping jaws by the fan tower drum during the penetration, so that the elastic pieces are pressed on the body under the action of the thrust, and the elastic pieces are elastically deformed to press the clamping jaws into the grooves, so that the clamp body can be penetrated; meanwhile, the clamping jaw embedded in the groove can be prevented from being separated from the fan tower cylinder after rebounding;

the limit curved ware includes straight section portion and curved section portion, and straight section portion and fan tower section of thick bamboo trompil position and the pre-buried degree of depth of reality match, and utilize curved section portion to make limit curved ware form predetermined bending radius under the effect of load to the excessive bending of restriction sea cable, in order to protect the sea cable.

Drawings

Fig. 1 is an overall schematic view of the present invention;

FIG. 2 is a cross-sectional view of the bend preventer of the present invention;

FIG. 3 is an overall schematic view of the clamp body of the present invention;

fig. 4 is an overall schematic view of the jaw of the present invention;

FIG. 5 is a schematic view of a first bend limiter;

fig. 6 is a schematic view of a second bending limiter.

The reference numbers in the figures illustrate: 1. a bend preventer; 11. a wire rope; 2. a main body; 21. a first body; 22. a second body; 23. a groove; 3. a claw; 31. a body; 311. an arc portion; 32. an elastic member; 4. a bend limiter; 41. a straight section; 42. a bent section; 5. a first bending limiter; 51. a first connection portion; 511. a plane; 52. a second connecting portion; 53. a first half watt; 54. a second half watt; 6. a second bending limiter; 61. a third connecting portion; 611. a cambered surface; 62. a fourth connecting portion; 63. a third half watt; 64. a fourth half watt; 7. a connector; 8. a wind turbine tower.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 1, an embodiment of a submarine cable protection device of the present invention includes a clamp body and a bend limiter 4 connected to the clamp body, wherein the clamp body and the bend limiter 4 are both sleeved outside a submarine cable, and the clamp body penetrates through an interior of an air inlet fan tower 8 to fix the submarine cable; the bend limiter 4 can be bent under the action of a load to form a preset bending radius of the submarine cable, and can limit excessive bending of the submarine cable to protect the submarine cable.

Referring to fig. 1 and 3, the fixture body comprises a main body 2 and a plurality of clamping jaws 3, wherein the main body 2 is provided with a plurality of grooves 23, and the clamping jaws 3 can be correspondingly embedded in the grooves 23. In order to facilitate the assembly of the clamp body and the bend limiter 4, the clamp body comprises a first main body 21 and a second main body 22 for splicing with the first main body 21, the first main body 21 and the second main body 22 are connected by fastening bolts to form the clamp body, and in order to facilitate the processing, the first main body 21 and the second main body 22 are symmetrically arranged in a semicircular shape, but the first main body 21 and the second main body 22 may also be asymmetrically arranged.

Referring to fig. 3, the first body 21 and the second body 22 are both provided with the above-mentioned groove 23. When the clamp body is inserted into the air inlet fan tower 8, in order to make the embedding force between the clamp body and the fan tower 8 distributed more uniformly, the grooves 23 formed in the first main body 21 and the second main body 22 are arranged in a staggered manner.

Referring to fig. 3 and 4, the jaw 3 includes a body 31 and an elastic member 32 fixed to the body 31, the jaw 3 is embedded in the groove 23, the body 31 and the main body 2 are rotatably coupled, and the elastic member 32 can contact the bottom wall of the groove 23. The upper surface of body 31 is including being located its both sides and being the arc portion 311 of arc setting, and the diameter of arc portion 311 is less than or equal to the specific external diameter of anchor clamps to inlay and establish the specific in-process of anchor clamps, jack catch 3 inlays and to establish the resistance when can reducing the wearing to establish in the inside of recess 23. Meanwhile, two side edges of the body 31 are arranged in an arc shape, so that the claw 3 can move in the groove 23 conveniently. The front end and the rear end of the body 31 are both arranged in an inclined plane so as to ensure that the body 31 can rotate in the groove 23; meanwhile, the lower part of the inclined plane is arranged in a chamfer.

Referring to fig. 4, the elastic member 32 is fixedly connected to the body 31 by a fastening screw, and the elastic member 32 is an elastic sheet and an elastic ring arranged in an arc shape to maintain the elastic member 32 to have better elastic recovery.

Referring to fig. 1, the clamp bodies are connected by a connector 7 and a bend limiter 4, and the connector 7 is spliced for easy installation and disassembly. The connector 7 includes a first connector 7 and a second connector 7 which can be mated with the first connector 7, and the mating of the first connector 7 and the second connector 7 is performed by fastening bolts. The end part of the connector 7 connected with the clamp body is arranged in a conical shape, so that the clamp body is embedded in the wind turbine tower 8.

Referring to fig. 1, 5 and 6, the bend limiter 4 includes a straight section 41 and a bent section 42 connected to the straight section 41, and the straight section 41 includes a plurality of first bending limiters 5 sequentially spliced. The first bending limiter 5 includes a first connection portion 51 and a second connection portion 52, and the first connection portion 51 can be fitted into the second connection portion 52 of the next first bending limiter 5 to be spliced therewith, so that the adjacent first bending limiters 5 can be spliced by the fitting of the first connection portion 51 and the second connection portion 52 of the other first bending limiter 5. The end face of the first connecting portion 51 is a plane 511, the second connecting portion 52 includes a first cavity groove capable of being used for embedding the first connecting portion 51, and the embedding force of the first connecting portion 51 and the first cavity groove which are arranged on the other plane 511 can realize the splicing of the first bending limiter 5 along a straight line. To facilitate the splicing of adjacent first bending limiters 5, the first bending limiters 5 comprise a first half-tile 53 and a second half-tile 54, the first half-tile 53 and the second half-tile 54 being fixed by fastening bolts. For ease of machining and to reduce the cost of the mould during machining, the first half-tile 53 and the second half-tile 54 may be symmetrically arranged.

Referring to fig. 5 and 6, the bent section 42 includes a plurality of second bending limiters 6 which are sequentially spliced, the second bending limiters 6 include third connecting portions 61 and fourth connecting portions 62, and the third connecting portions 61 can be embedded in the fourth connecting portions 62 of the next second bending limiters 6 spliced therewith, and the splicing of the adjacent second bending limiters 6 can be realized by the embedding of the third connecting portions 61 and the fourth connecting portions 62 of the other second bending limiters 6. The end face of the third connecting part 61 is arranged in an arc surface 611, the fourth connecting part 62 comprises a second inner cavity groove which can be used for embedding the third connecting part 61, and the other clamping force of the third connecting part 61 arranged in the arc surface 611 and the second inner cavity groove can realize splicing of the second bending limiter 6, so that the bent section part 42 can accord with a preset bending radius under the action of load, and the excessive bending of the submarine cable is limited to protect the submarine cable. To facilitate the splicing of adjacent second bending limiters 6, the second bending limiters 6 comprise a third half-tile 63 and a fourth half-tile 64, the third half-tile 63 and the fourth half-tile 64 being fixed by fastening bolts. For ease of machining and to reduce the cost of the mould during machining, the third half-tile 63 and the fourth half-tile 64 may be symmetrically arranged.

Referring to fig. 5 and 6, the straight section 41 formed by splicing the plurality of first bending limiters 5 does not bend and deform under the action of a load, and meanwhile, the length of the required straight section 41 is measured according to the position of the opening on the wind turbine tower 8 and the actual embedded depth. The bent section 42 formed by splicing the plurality of second bending limiters 6 is bent by the load, and the bending radius of the bent section 42 by the load can be matched with the preset bending radius because the angle of the arc surface 611 of the third connecting portion 61 is preset according to the bending radius.

Referring to fig. 1 and 2, the submarine cable protection device further comprises a bending prevention device 1 sleeved outside the submarine cable, and the bending prevention device 1 is connected with the free end of the clamp body through a flange structure. The inner wall of the bending prevention device 1 is arranged in a taper mode so as to facilitate the penetration of a submarine cable, and the outer wall of the bending prevention device 1 is arranged in a taper mode so as to facilitate the insertion of the bending prevention device 1 into the tower barrel 8 of the air inlet fan. The steel wire rope 11 is arranged at the free end of the bending preventer 1, and part of the steel wire rope 11 is encapsulated and fixed in the bending preventer 1, so that the steel wire rope 11 and the bending preventer 1 are fixedly connected.

Referring to fig. 1, the material of the submarine cable protection device is corrosion-resistant material to reduce the corrosion of seawater to the submarine cable protection device, so as to prolong the service life of the submarine cable protection device.

The motion process is as follows:

assembling the anti-bending device 1, the clamp body and the bend limiter 4 in sequence, placing (anchoring or dynamic positioning) the cable laying ship in a region near the pile barrel, lowering the guide rope to be connected with the traction rope reserved in the pile barrel by a diver, recovering the traction rope at the top operating platform of the pile barrel after the guide rope is connected well by an operator at the top end in the pile barrel, and enabling the traction rope to take the steel wire rope 11 at the rear end to penetrate out of a bottom hole to enter the operating platform. And connecting a traction steel wire rope 11 and a fixed winch on the operating platform to complete all preparation work. And then the platform winch continuously recovers to recover the traction steel wire rope 11 to the winding drum, and the recovery of the steel wire rope 11 drives the submarine cable protection device, the cable dragging head connected with the rear end of the submarine cable protection device and the cable to enter water. After the dragging head passes through the cable laying ship tail bracket, the cable laying ship cable tractor begins to clamp at the moment, and the cable is matched with the platform winch to begin to be lowered. The traction head drives the submarine cable protection device to integrally penetrate out from the perforated position of the wall of the wind turbine tower cylinder 8, the anti-bending device 1 firstly enters the perforated position and can guide, and along with tightening of the platform winch, the clamp body starts to enter the perforated position. The fan tower cylinder 8 applies thrust to the jaws 3, the compression elastic bodies enter the grooves 23, the clamp bodies smoothly penetrate out, and then the elasticity rebounds under the action of the elastic force of the clamp bodies, so that the jaws 3 bounce. Along with the traction process, each claw 3 is pressed down and rebounded in sequence; until the connecting piece interferes the flange conical surface and gets into in the pile foundation section of thick bamboo trompil is downthehole, form to interfere and spacing, jack catch 3 after kick-backing interferes with 8 inner walls of fan tower section of thick bamboo in order to prevent the slippage, forms central positioning. The sequential locking of the first bending limiter 5 and the sequential locking of the second bending limiter 6 together results in a smooth bending radius of extreme size, preventing excessive bending of the sea cable and facilitating the exit of the clamp during installation. The second bending limiter 6 is installed at the rearmost end, and when an external load is applied to the bend limiter 4, the straight section 41 and the bent section 42 are spliced to form a smooth bending radius exceeding the minimum bending radius of the submarine cable, so that the submarine cable is prevented from being excessively bent, and finally, the centering and bend limiting protection under the condition of no J-pipe are completed.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. A submarine cable protection device is sleeved outside a submarine cable to protect the submarine cable, and is characterized by comprising a clamp body and a bend limiter, wherein the clamp body can penetrate through a tower drum of an air inlet fan to fix the submarine cable; the clamp body comprises a main body and a plurality of clamping jaws, wherein the main body is provided with a plurality of grooves along the circumferential direction of the main body, and the clamping jaws can be embedded in the grooves; the clamping jaw comprises a body and an elastic piece fixed with the body, the body is rotatably connected with the main body, and the elastic piece can be contacted with the bottom wall of the groove so as to realize the assembly of the clamp body and the fan tower drum by utilizing the deformation of the elastic piece; the bend limiter comprises a straight section part and a bent section part connected with the straight section part, and the straight section part is connected with the clamp body.

2. The submarine cable protection device according to claim 1, wherein the clamp body comprises a first body and a second body spliced with the first body, and the first body and the second body are both arranged in an arc shape; the first main body and the second main body are provided with the grooves, and the grooves are arranged in a staggered mode.

3. The submarine cable protection device according to claim 1, further comprising a bending preventer fitted around the outside of the submarine cable, the bending preventer being connected to the free end of the clamp body; and a steel wire rope is arranged at the free end of the bending preventer, and part of the steel wire rope is encapsulated in the bending preventer.

4. The sea cable protection device of claim 1 wherein said straight section is sequentially spliced by a plurality of first bend limiters, said first bend limiters comprising a first half-tile and a second half-tile spliced to said first half-tile; the first bending limiter comprises a first connecting part and a second connecting part, the first connecting part can be embedded in the second connecting part to connect the adjacent first bending limiters, and the end face of the first connecting part is a plane.

5. The sea cable protection device of claim 1 wherein said bend section is sequentially spliced by a plurality of second bend limiters, said second bend limiters comprising a third half-watt and a fourth half-watt spliced to said third half-watt; the second bending limiter comprises a third connecting portion and a fourth connecting portion, the third connecting portion can be embedded in the fourth connecting portion to connect the adjacent second bending limiter, and the end face of the third connecting portion is an arc face to adapt to the bending radius of the bent section portion.

6. The submarine cable protection device according to claim 1, wherein the clamp body is connected to the bend limiter by a connecting piece, and the end of the connecting piece connected to the clamp body is tapered.

7. The submarine cable protection device according to claim 1, wherein the upper surface of the body comprises arc portions located on both sides and arranged in an arc shape, and the diameter of each arc portion is smaller than or equal to the outer diameter of the clamp body.

8. A submarine cable protection device according to claim 1, wherein said elastic element is an elastic ring or an arc-shaped elastic piece.

9. The submarine cable protection device according to claim 1, wherein the material of the submarine cable protection device is a corrosion-resistant material.

10. A sea cable protection device as claimed in claim 3 wherein the outer and inner walls of the bend preventer are tapered.