CN113258525B - Submarine cable bending protection system - Google Patents
Submarine cable bending protection system Download PDFInfo
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- CN113258525B CN113258525B CN202110730764.6A CN202110730764A CN113258525B CN 113258525 B CN113258525 B CN 113258525B CN 202110730764 A CN202110730764 A CN 202110730764A CN 113258525 B CN113258525 B CN 113258525B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G11/00—Arrangements of electric cables or lines between relatively-movable parts
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
- H02G3/0616—Joints for connecting tubing to casing
- H02G3/0625—Joints for connecting tubing to casing with means for preventing disengagement of conductors
- H02G3/0666—Joints for connecting tubing to casing with means for preventing disengagement of conductors with means clamping the armour of the conductor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
- H02G3/0616—Joints for connecting tubing to casing
- H02G3/0691—Fixing tubing to casing by auxiliary means co-operating with indentations of the tubing, e.g. with tubing-convolutions
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses a submarine cable bending protection system, which comprises a central positioning protection device and a protection device which are sequentially arranged, wherein the central positioning protection device comprises a protection body, the front end of the protection body is conical, the protection body is assembled on a submarine cable, the protection body is used for assembling the submarine cable in the tail section of a bending pipe, the outer wall of the protection body is sequentially provided with an A positioning protection component and a B positioning protection component, the A positioning protection component and the B positioning protection component are respectively in abutting fit with the inner wall of the bending pipe to maintain the submarine cable at the central position of the tail section of the bending pipe, the submarine cable bending protection system can realize the central position positioning of the submarine cable, the positioning is accurate, and the submarine cable can be effectively prevented from falling off from the bending pipe, the shock resistance is strong, and the current use requirements are met.
Description
Technical Field
The invention relates to the field of submarine cable protection, in particular to a submarine cable bending protection system.
Background
Submarine cables are cables wrapped with insulating materials, laid on the seabed and used for telecommunication transmission, and are divided into submarine communication cables and submarine power cables.
Along with the increasing demand on energy in China, the development strength of ocean oil gas and offshore wind power is also increased rapidly, along with the large-scale construction of offshore wind power plants, submarine cables are used as transmission media of electric energy, the safety and reliability of the submarine cables are vital, in the offshore wind power plants, the submarine cables generally go up to a fan base platform through a bending pipe fixed on a fan pile foundation, the bending pipe is convenient for construction of the submarine cables, the inner diameter of the bending pipe is generally 2-2.5 times of the outer diameter of the submarine cables, the submarine cables come out from the tail part of the bending pipe to be in an arc-shaped suspension state at a transition section contacting with a seabed, particularly in offshore wind power plants, as ocean currents, surges and waves are severe, a scouring collapse area is formed around a foundation pile, the collapse area is larger under the scouring action of ocean currents, the suspended section of the submarine cables is longer and longer, the submarine cables are prone to be bent excessively, once the bending radius of the submarine cables is smaller than the safe working radius, performance will receive the influence, and the submarine cable can constantly swing repeatedly under long-term ocean current effect simultaneously, takes place fatigue damage easily, because crooked intraductal diameter is far greater than the submarine cable external diameter, the submarine cable also can constantly rub with crooked pipe, also can lead to submarine cable outer protective layer wearing and tearing, finally destroys submarine cable performance.
Aiming at the problems, the currently adopted methods are to fill and bury the washing collapse area of the foundation pile accessory in a paradigm of throwing stones or throwing a concrete bag, but the construction difficulty of the methods is higher, and under the long-time washing action of ocean currents, stones or the concrete bag can be washed away, so the stones or the concrete bag need to be refilled and reinforced at intervals, so the overall cost is higher, and the other method is to add a section of nodular cast iron protection pipe behind a bent pipe for reinforcement, the method has a certain protection effect on the overbending of the submarine cable, but the limit of the submarine cable in the bent pipe is not considered, the submarine cable can still swing freely in the bent pipe and can be collided with the bent pipe, meanwhile, the ball-milled cast iron protection pipe material is cast iron, the material is easy to corrode in seawater, once corrosion damage occurs, the protection effect cannot be achieved, on the contrary, the weight is large, the load of the submarine cable is increased, it is easier to cause the overhanging section to overbend.
Disclosure of Invention
In order to solve the technical problem, the invention provides a submarine cable bending protection system which comprises a central positioning protection device and a bending protection device which are sequentially arranged, wherein the central positioning protection device comprises a protection body, the front end of the protection body is conical, the protection body is assembled on a submarine cable, the protection body is used for assembling the submarine cable in the tail section of a bending pipe, an A positioning protection component and a B positioning protection component are sequentially installed on the outer wall of the protection body, and the A positioning protection component and the B positioning protection component are in abutting fit with the inner wall of the bending pipe to maintain the submarine cable at the central position of the tail section of the bending pipe.
Preferably: the protective body comprises at least three protection piece, and each protection piece inboard sets up to set up and sets up the cross-section for curved draw-in groove, and the draw-in groove is unanimous with protection piece length direction, and draw-in groove and submarine cable match, the draw-in groove joint of each protection piece is on the submarine cable, through bolt fixed connection and fixed mounting on the submarine cable between each protection piece.
Preferably: the slipmat is equipped with in the draw-in groove, and the slipmat moves towards along its arc and arranges, and when the protection piece assembled on the submarine cable, the slipmat leaned on and laminates on the submarine cable lateral surface.
Preferably: the mounting groove has been seted up along its arc trend to the draw-in groove, and the slipmat is fixed in the mounting groove, and the slipmat lateral surface is provided with anti-skidding arch.
Preferably: the anti-slip bulges are strip bulges, the anti-slip bulges are arranged along the arc trend of the clamping groove, and the anti-slip bulges are arranged and distributed at equal intervals.
Preferably: the A positioning protection assembly comprises a conical ring, the conical ring is distributed along the length of the protection body at intervals, the conical direction of the conical ring is consistent with the conical direction of the front end of the protection body, the conical ring is used for forming friction abutting fit with the inner wall of the bent pipe, and the submarine cable is maintained at the center of the bent pipe and prevented from sliding out of the bent pipe.
Preferably: in the recess that the protection piece outside was seted up, the trend of recess and the cross-section arc trend of draw-in groove are unanimous, and when each protection piece assembled together, each recess encloses head and the tail intercommunication and constitutes annular spacing groove, and B location protection subassembly is installed at the spacing inslot, and when the protective body assembly was intraductal in the bending, B location protection subassembly one end supported and leaned on the spacing inslot other end and supported and lean on the crooked inside pipe wall.
Preferably: b location protection subassembly is including leaning on the subassembly, support and lean on the subassembly including leaning on piece and arc support piece, support and lean on a corner that supports and lean on spacing groove tank bottom one side by one end, arc support piece one end is passed through the articulated shaft and is articulated at the middle part of supporting and leaning on the piece, the axis of articulated shaft and protective body is vertical form and distributes, arc support piece's the other end supports and leans on the corner at spacing groove tank bottom opposite side, arc support piece is used for providing the elastic force to supporting and supports and be used for maintaining to support and lean on the piece and be one end and support and lean on the state of arranging by the outside slope form of the other end in the spacing groove to leaning on the piece.
Preferably: the abutting components are distributed in a circumferential array around the central axis of the protective body.
Preferably: the B positioning protection assembly further comprises a B1 annular shaft and a B2 annular shaft, the B1 annular shaft and the B2 annular shaft are sleeved in the limiting groove, the B1 annular shaft and the B2 annular shaft are distributed at intervals along the length direction of the protection body, one end, located in the limiting groove, of the abutting piece is rotatably installed on the B1 annular shaft, the B1 annular shaft abuts against a corner on one side of the bottom of the limiting groove, one end, far away from the abutting piece, of the arc-shaped supporting piece is rotatably installed on the B2 annular shaft, and the B2 annular shaft abuts against a corner on the other side of the bottom of the limiting groove; the in-process in the protective body assembles the crooked intraductal, lean on the piece to keep away from the one end of B1 annular axle to lean on under the effect of leaning on of crooked intraductal wall, be close to the protective body, each leans on the piece to be the form of drawing in, lean on and press curved arc support piece, the protective body assembles intraductal back of crooked, under the action of gravity of submarine cable, arc support piece provides outside diffusion to leaning on the piece, make to lean on the piece to keep away from the one end of B1 annular axle and lean on at crooked intraductal wall, make and block the protective body in the crooked intraductal, make the submarine cable can not break away from the crooked pipe of landing department.
Preferably: the bending protection device comprises bending limiters and limiting cables which are sequentially connected end to end, the bending limiters are formed by combining two bending limiting blocks, fixing assemblies are arranged on the outer sides of the bending limiters, the limiting cables are fixedly connected with the fixing assemblies on the outer sides of the bending limiters, and the limiting cables are used for limiting the bending amplitude of the submarine cable.
Preferably: the fixing assemblies are distributed in a circumferential array around the central axis of the bending limiter, and the limiting cables and the fixing assemblies on the bending limiter are arranged in a one-to-one correspondence mode.
Preferably: the fixing assembly comprises a cylindrical protrusion, a threaded hole is formed in the protrusion, an orifice of the threaded hole is a counter bore, a bolt is arranged in the threaded hole, and the limiting cable is wound on the bolt.
Preferably: the counter bore is provided with a through groove for limiting the passing of the cable along the length direction of the bending limiter
Preferably: the cross-section that matches with the submarine cable is curved assembly groove seted up to crooked restriction piece inboard, and the crooked restriction piece outside is including the head, neck and the afterbody that distribute gradually, and the spread groove has been seted up to the afterbody of crooked restriction piece, and the head of crooked limiter is the annular arch, and its cross-section is semi-circular, and the spread groove cross-section of crooked limiter afterbody is the cambered surface, and the annular arch assembles in the spread groove, annular arch and spread groove clearance fit.
Preferably: the opposite side faces of the two bending limiting blocks are attached to each other, a positioning pin is arranged on the side face of one bending limiting block, a positioning hole is arranged on the side face of the other bending limiting block, connecting holes are formed in the two bending limiting blocks, and the two bending limiting blocks are arranged on the submarine cable through bolts in the connecting holes.
Preferably: the neck of the bending limiting block is provided with a retaining shoulder which abuts against the tail of the adjacent bending limiting block, and the retaining shoulder is provided with a buffering wear-resistant pad.
The invention has the technical effects and advantages that: the submarine cable bending protection system provided by the invention can realize the positioning of the central position of the submarine cable, is accurate in positioning, can effectively prevent the submarine cable from sliding down from the bending pipe, can realize the bending protection of the submarine cable, can realize the adjustment of the bending degree, realizes double-effect protection, ensures that the submarine cable has small swing amplitude and strong shock resistance, and meets the current use requirements.
Drawings
Fig. 1 is a schematic structural diagram of a bending pipe correspondingly assembled in a submarine cable bending protection system according to the present invention.
Fig. 2 is a schematic cross-sectional structural diagram of a center positioning protection device and a bending protection device in a submarine cable bending protection system according to the present invention.
Fig. 3 is a schematic cross-sectional structural view of a centrally located protection device in a submarine cable bending protection system according to the present invention.
Fig. 4 is a schematic structural diagram of a bending limiting block in a bending protection device in a submarine cable bending protection system according to the present invention.
Fig. 5 is a front view of a bending protection device in a submarine cable bending protection system according to the present invention.
Fig. 6 is a schematic cross-sectional view of a bending protection device in a submarine cable bending protection system according to the present invention.
Fig. 7 is a schematic structural diagram of a bending protection device in a submarine cable bending protection system according to the present invention.
Description of the labeling: 100-bending pipe, 200-protective body, 210-A positioning protective component, 211-conical ring, 220-B positioning protective component, 221-abutting piece, 222-arc supporting piece, 223-B1 annular shaft, 224-B2 annular shaft, 230-protective block, 231-non-slip pad, 232-non-slip protrusion, 233-limiting groove, 300-bending limiter, 310-bending limiting block, 311-head, 312-neck, 313-tail, 314-annular protrusion, 315-connecting groove, 316-buffering wear-resistant pad, 320-fixing component, 321-protrusion, 322-countersunk hole, 323-threaded hole, 324-bolt, 325-through groove and 400-limiting rope.
Detailed Description
The invention is described in further detail below with reference to the drawings and detailed description, embodiments of the invention are given for purposes of illustration and description, and are not intended to be exhaustive or to limit the invention to the form disclosed, many modifications and variations will be apparent to those skilled in the art, which embodiments have been chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Example 1
Referring to fig. 1 to 3, in the present embodiment, a submarine cable bending protection system is provided, including a central positioning protection device and a bending protection device that are sequentially arranged, the central positioning protection device includes a protection body 200, a front end of the protection body 200 is tapered, the protection body 200 is assembled on a submarine cable, the protection body 200 is used to assemble the submarine cable in a tail section of a bending pipe 100, an a positioning protection component 210 and a B positioning protection component 220 are sequentially installed on an outer wall of the protection body 200, both the a positioning protection component 210 and the B positioning protection component 220 and an inner wall of the bending pipe 100 form a leaning fit to maintain the submarine cable at a central position of the tail section of the bending pipe 100.
The protection body 200 comprises at least three protection blocks 230, and each protection block 230 inboard sets up to be offered the cross-section for curved draw-in groove, draw-in groove to and protection block 230 length direction unanimity, draw-in groove and submarine cable matching, the draw-in groove joint of each protection block 230 is on the submarine cable, passes through bolt fixed connection and fixed mounting between each protection block 230 on the submarine cable.
Be equipped with slipmat 231 in the draw-in groove, slipmat 231 arranges along its arc trend, and when protection piece 230 assembled on the submarine cable, slipmat 231 leaned on the laminating on the submarine cable lateral surface.
The mounting groove has been seted up along its arc trend to the draw-in groove, and slipmat 231 is fixed in the mounting groove, and slipmat 231 lateral surface is provided with anti-skidding arch 232.
The anti-slip protrusions 232 are strip-shaped protrusions, the anti-slip protrusions 232 are arranged along the arc-shaped trend of the clamping groove, and the anti-slip protrusions 232 are arranged at equal intervals.
The a-position protection assembly 210 comprises tapered rings 211, the tapered rings 211 are distributed at intervals along the length of the protection body 200, the taper direction of the tapered rings 211 is consistent with the taper direction of the front end of the protection body 200, and the tapered rings 211 are used for forming a friction abutting fit with the inner wall of the bent pipe 100, maintaining the submarine cable at the central position of the bent pipe 100 and preventing the submarine cable from sliding out of the bent pipe 100.
In the recess that the protection piece 230 outside was seted up, the trend of recess and the cross-section arc trend of draw-in groove are unanimous, and when each protection piece 230 assembled together, each recess encloses head and tail intercommunication and constitutes annular spacing groove 233, and B location protection subassembly 220 is installed in spacing groove 233, and when the protective body 200 was assembled in bent tube 100, B location protection subassembly 220 one end leaned on and leaned on the bent tube 100 inner wall at the other end in spacing groove 233.
The B positioning protection component 220 comprises a leaning component, the leaning component comprises a leaning piece 221 and an arc-shaped support piece 222, one end of the leaning piece 221 leans on a corner on one side of the bottom of the limiting groove 233, one end of the arc-shaped support piece 222 is hinged in the middle of the leaning piece 221 through a hinge shaft, the hinge shaft and a central axis of the protection body 200 are distributed in a vertical shape, the other end of the arc-shaped support piece 222 leans on a corner on the other side of the bottom of the limiting groove 233, and the arc-shaped support piece 222 is used for providing elastic force for the leaning piece 221 so as to maintain the state that the leaning piece 221 leans on the limiting groove 233 with one end leaning on the other end and is arranged in an outward inclined shape.
The abutment members are distributed in a circumferential array around the central axis of the body 200.
The B positioning protection assembly 220 further comprises a B1 annular shaft 223 and a B2 annular shaft 224, the B1 annular shaft 223 and the B2 annular shaft 224 are sleeved in the limiting groove 233, the B1 annular shaft 223 and the B2 annular shaft 224 are distributed at intervals along the length direction of the protection body 200, one end, located in the limiting groove 233, of the abutting piece 221 is rotatably installed on the B1 annular shaft 223, the B1 annular shaft 223 abuts against a corner on one side of the groove bottom of the limiting groove 233, one end, away from the abutting piece 221, of the arc-shaped support 222 is rotatably installed on the B2 annular shaft 224, and the B2 annular shaft 224 abuts against a corner on the other side of the groove bottom of the limiting groove 233; in the process that the protection body 200 is assembled in the bent pipe 100, one end of the abutting piece 221, which is far away from the B1 annular shaft 223, is close to the protection body 200 under the abutting action of the inner wall of the bent pipe 100, each abutting piece 221 is in a furled shape, the abutting piece 221 presses and bends the arc-shaped support piece 222, after the protection body 200 is assembled in the bent pipe 100, under the gravity action of a submarine cable, the arc-shaped support piece 222 provides outward diffusion force for the abutting piece 221, so that one end of the abutting piece 221, which is far away from the B1 annular shaft 223, abuts against the inner wall of the bent pipe 100, the protection body 200 is clamped in the bent pipe 100, and the submarine cable cannot be separated from the bent pipe 100 at the sliding position.
Referring to fig. 4 to 7, the bending protection device comprises a bending limiter 300 and a limiting cable 400 connected end to end in sequence, the bending limiter 300 is formed by combining two bending limiting blocks 310, a fixing component 320 is arranged outside the bending limiter 300, the limiting cable 400 is fixedly connected with the fixing component 320 outside each bending limiter 300, and the limiting cable 400 is used for limiting the bending amplitude of the submarine cable.
The securing members 320 are arranged in a circumferential array about the central axis of the bend limiter 300, and the restraining cables 400 are arranged in one-to-one correspondence with the securing members 320 on the bend limiter 300.
The fixing assembly 320 comprises a cylindrical protrusion 321, the protrusion 321 is provided with a threaded hole 323, the opening of the threaded hole 323 is a counter bore 322, a bolt 324 is arranged in the threaded hole 323, and the limiting cable 400 is wound on the bolt 324.
The counter bore 322 is opened with a through groove 325 for restricting the passage of the cable 400 along the longitudinal direction of the bending restrictor 300.
The inside of the bending limiting block 310 is provided with an assembling groove which is arc-shaped in cross section and matched with the submarine cable, the outside of the bending limiting block 310 comprises a head part 311, a neck part 312 and a tail part 313 which are sequentially distributed, the tail part of the bending limiting block 310 is provided with a connecting groove 315, the head part of the bending limiter 300 is an annular bulge 314, the cross section of the annular bulge 314 is semicircular, the cross section of the connecting groove 315 at the tail part of the bending limiter 300 is an arc surface, the annular bulge 314 is assembled in the connecting groove 315, and the annular bulge 314 and the connecting groove 315 are in clearance fit.
The opposite side surfaces of the two bending limiting blocks 310 are attached to each other, a positioning pin is arranged on the side surface of one bending limiting block 310, a positioning hole is arranged on the side surface of the other bending limiting block 310, connecting holes are formed in the two bending limiting blocks, and the two bending limiting blocks 310 are arranged on the submarine cable through bolts in the connecting holes.
The neck of the bending limiting block 310 is provided with a shoulder which abuts against the tail of the previous adjacent bending limiting block 310, and the shoulder is provided with a buffering wear-resistant pad 316.
When the invention is used, firstly, a protective body 200, each bending limiter 300 and a limiting cable 400 are assembled at the preset position of the submarine cable;
firstly, assembling the protection body 200, firstly, adjusting the conical ring 211 and the abutting component on the submarine cable, then clamping the protection blocks 230 on the submarine cable, fitting the adjacent side surfaces of the protection blocks 230 with each other, fitting the clamping grooves on the inner side surfaces of the protection blocks 230 with the submarine cable, arranging positioning pins or positioning holes on the adjacent side surfaces of the protection blocks 230, matching the positioning pins and the positioning holes to realize the pre-fixing of the protection blocks 230 on the submarine cable, moving the protection body 200 formed by combining the protection blocks 230 to a preset position, penetrating bolts through the connecting holes on the protection blocks 230, fixedly connecting the protection blocks 230 with each other, and tightly fixing the protection blocks on the submarine cable, wherein the anti-skid protrusions 232 are extruded and tightly abutted against the outer surface of the submarine cable under the action of fastening force, the B1 annular shaft 223 and the B2 annular shaft 224 are both elastic flexible shafts, and are sleeved in the limiting grooves 233 from the submarine cable, the B1 annular shaft 223 is arranged at the corner of one side of the bottom of the limiting groove 233, the B2 annular shaft 224 is arranged at the corner of the other side of the bottom of the limiting groove 233, the arc-shaped supporting piece 222 is extruded and bent, the arc-shaped supporting piece 222 applies elastic force to the abutting piece 221, one end, away from the limiting groove 233, of the abutting piece 221 is obliquely and outwards arranged, and then each conical ring 211 is sleeved in a fixing groove on the outer side of the protection body 200;
it should be noted that, a connecting groove for connecting the bending limiter 300 is provided at the inner side of the tail end of the protection body 200, and a fixing device for fixing the limiting cable is also provided at the outer part of the tail end of the protection body 200;
when assembling each bending limiter 300, firstly, before each protecting block 230 is pre-fixed on the submarine cable, the annular protrusion 314 at the head of the next bending limiter 300 is installed in the connecting groove of the protecting body 200, then, the next bending limiter 300 is fixed and realized through the matching between the positioning pins and the positioning holes, when the next bending limiter 300 is installed in the same way, the positioning pins at the heads of the two bending limiting blocks 310 in the previous bending limiter 300 are inserted into the positioning holes and are slightly deeper, the positioning pins at the tails of the two bending limiting blocks 310 are inserted slightly shallower, so that the tail of the bending limiter 300 is in an open mouth shape, then, the next pair of bending limiting blocks 310 are assembled in the connecting grooves in the previous pair of bending limiting blocks 310 in the same way, and so on, and each bending limiter 300 is assembled and bent;
then assembling the limiting cables 400, fixedly installing the head ends of the limiting cables in a fixing device at the tail part of the protective body 200, then arranging the submarine cable section assembled with the bending limiters 300 into a preset bent shape, sequentially penetrating the limiting cables through the penetrating grooves 325 on the bulges 321 of the next bending limiter 300, then winding the limiting cables 400 on the bolts 324, installing the bolts 324 in the threaded holes 323, penetrating the limiting cables 400 out of the penetrating grooves 325, penetrating the limiting cables 400 into the penetrating grooves 325 on the bulges 321 in the next bending limiter 300, and so on, and completing installation of the limiting cables 400 so that the limiting cables are arranged along the bent direction of the submarine cable;
finally, the protective body 200 is assembled in the bent pipe 100, the protective body 200 is firstly introduced from the tail end of the bent pipe 100 and introduced into a preset position in the bent pipe, when the protective body 200 is introduced, the inner wall of the bent pipe 100 presses the conical ring 211, because the conical direction of the conical ring 211 is consistent with the conical direction of the front end of the protective body 200, the resistance of the conical ring 211 is small, the protective body 200 can be assembled in the bent pipe 100, in the process that the protective body 200 is assembled in the bent pipe 100, one end of the abutting piece 221, which is far away from the B1 annular shaft 223, is close to the protective body 200 under the abutting action of the inner wall of the bent pipe 100, each abutting piece 221 is in a furled shape, the abutting piece 221 bends the arc-shaped supporting piece 222, after the protective body 200 is assembled in the bent pipe 100, under the gravity action of a submarine cable, the arc-shaped supporting piece 222 provides outward diffusion force to the abutting piece 221, so that one end of the abutting piece 221, which is far away from the B1, abuts against the inner wall of the bent pipe 100, so that the protective body 200 is caught in the bent tube 100;
through antiskid point 231 and the setting of antiskid arch 232 on it, make the submarine cable can not follow the roll-off in the protective body 200, through toper circle 211 with support the setting of leaning on the subassembly, make the protective body can not break away from the roll-off and go out crooked pipe 100, make the rigidity of submarine cable, setting through restriction cable 400, under the rivers effect, the submarine cable swing, restriction cable 400 is stretched, the restriction cable can play the effect that the one-level cushions the swing, it is predetermined crooked form to maintain the submarine cable, each crooked limiter 300 restricts the bending range of submarine cable, play the effect of crooked protection, simultaneously when the submarine cable swings, adjacent crooked limiter 300 afterbody supports and leans on buffering wear pad, realize the second grade buffering, very big reduction rivers lead to the fact the impact of submarine cable, the submarine cable swing can be effectively cushioned, avoid bending fatigue, promote crooked protection system's reliability and life.
The submarine cable bending protection system provided by the invention can realize the positioning of the central position of the submarine cable, is accurate in positioning, and can effectively prevent the submarine cable from slipping from a bending pipe.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by one of ordinary skill in the art and related arts based on the embodiments of the present invention without any creative effort, shall fall within the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.
Claims (10)
1. A submarine cable bend protection system characterized by: the submarine cable positioning device comprises a center positioning protection device and a bending protection device which are sequentially arranged, wherein the center positioning protection device comprises a protection body (200), the front end of the protection body (200) is conical, the protection body (200) is assembled on a submarine cable, the protection body (200) is used for assembling the submarine cable in the tail section of a bent pipe (100), an A positioning protection component (210) and a B positioning protection component (220) are sequentially installed on the outer wall of the protection body (200), the A positioning protection component (210) comprises a conical ring (211), the B positioning protection component (220) comprises a propping component, the propping component comprises a propping part (221) and an arc-shaped support part (222), the conical ring (211) and the propping part (221) are both in propping fit with the inner wall of the bent pipe (100) to maintain the submarine cable at the center position of the tail section of the bent pipe (100);
the bending protection device comprises bending limiters (300) and limiting cables (400) which are sequentially connected end to end, wherein the bending limiters (300) are formed by combining two bending limiting blocks (310), fixing assemblies (320) are arranged on the outer sides of the bending limiters (300), the limiting cables (400) are fixedly connected with the fixing assemblies (320) on the outer sides of the bending limiters (300), and the limiting cables (400) are used for limiting the bending amplitude of the submarine cable;
the fixing assemblies (320) are distributed in a circumferential array around the central axis of the bending limiter (300), and the limiting cables (400) and the fixing assemblies (320) on the bending limiter (300) are arranged in a one-to-one correspondence manner;
the fixing assembly (320) comprises a cylindrical protrusion (321), a threaded hole (323) is formed in the protrusion (321), an orifice of the threaded hole (323) is a counter bore (322), a bolt (324) is installed in the threaded hole (323), and the limiting cable (400) is wound on the bolt (324).
2. A submarine cable bend protection system according to claim 1, wherein: the protective body (200) comprises at least three protection pieces (230), and each protection piece (230) inboard sets up to be offered the cross-section and is curved draw-in groove, and the draw-in groove is unanimous with protection piece (230) length direction, and draw-in groove and submarine cable match, the draw-in groove joint of each protection piece (230) on the submarine cable, through bolt fixed connection and fixed mounting between each protection piece (230) on the submarine cable.
3. A submarine cable bend protection system according to claim 2, wherein: be equipped with slipmat (231) in the draw-in groove, slipmat (231) move towards along its arc and arrange, and when protection piece (230) assembled on the submarine cable, slipmat (231) supported and leaned on the laminating on the submarine cable lateral surface.
4. A submarine cable bend protection system according to claim 3, wherein: the mounting groove has been seted up along its arc trend to the draw-in groove, and slipmat (231) are fixed in the mounting groove, and slipmat (231) lateral surface is provided with non-slip raised (232).
5. A submarine cable bend protection system according to claim 1, wherein: the conical rings (211) are distributed at intervals along the length of the protection body (200), the conical direction of the conical rings (211) is consistent with the conical direction of the front end of the protection body (200), and the conical rings (211) are used for forming friction abutting fit with the inner wall of the bent pipe (100) to maintain the submarine cable at the central position of the bent pipe (100) and prevent the submarine cable from sliding out of the bent pipe (100).
6. A submarine cable bend protection system according to claim 1, wherein: in the recess that protection piece (230) outside was seted up, the trend of recess and the cross-section arc trend of draw-in groove are unanimous, when each protection piece (230) assemble together, each recess encloses head and the tail intercommunication and constitutes annular spacing groove (233), B location protection component (220) are installed in spacing groove (233), when protective body (200) assembly is in crooked pipe (100), B location protection component (220) one end is supported and is leaned on the other end supports and lean on crooked pipe (100) inner wall in spacing groove (233).
7. A submarine cable bend protection system according to claim 6, wherein: lean on piece (221) one end to lean on the corner that leans on spacing groove (233) tank bottom one side, arc support piece (222) one end passes through the articulated shaft and articulates at the middle part that leans on piece (221), the axis of articulated shaft and protective body (200) is vertical form distribution, the other end of arc support piece (222) leans on the corner of spacing groove (233) tank bottom opposite side, arc support piece (222) are used for providing the elastic force to leaning on piece (221) and are used for maintaining to lean on piece (221) to lean on one end to lean on the state of leaning on the outward slope form of the other end and arranging in spacing groove (233).
8. A submarine cable bend protection system according to claim 7, wherein: the cross-section that matches with the submarine cable is seted up to crooked restriction piece (310) inboard is curved assembly groove, crooked restriction piece (310) outside is including head (311) that distribute gradually, neck (312) and afterbody (313), spread groove (315) have been seted up to the afterbody of crooked restriction piece (310), the head of crooked limiter (300) is annular protruding (314), its cross-section is semi-circular, spread groove (315) cross-section of crooked limiter (300) afterbody is the cambered surface, annular protruding (314) assembly is in spread groove (315), annular protruding (314) and spread groove (315) clearance fit.
9. A submarine cable bend protection system according to claim 8, wherein: the opposite side surfaces of the two bending limiting blocks (310) are attached to each other, the side surface of one bending limiting block (310) is provided with a positioning pin, the side surface of the other bending limiting block (310) is provided with a positioning hole, the two bending limiting blocks are provided with connecting holes, and the two bending limiting blocks (310) are arranged on the submarine cable through bolts in the connecting holes.
10. A submarine cable bend protection system according to claim 9, wherein: the neck of the bending limiting block (310) is provided with a retaining shoulder which abuts against the tail of the previous adjacent bending limiting block (310), and the retaining shoulder is provided with a buffering wear-resistant pad (316).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110730764.6A CN113258525B (en) | 2021-06-30 | 2021-06-30 | Submarine cable bending protection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110730764.6A CN113258525B (en) | 2021-06-30 | 2021-06-30 | Submarine cable bending protection system |
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| CN113258525A CN113258525A (en) | 2021-08-13 |
| CN113258525B true CN113258525B (en) | 2021-10-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3073295A2 (en) * | 2015-03-26 | 2016-09-28 | CGG Services SA | Quick mount cable-protecting device usable in marine surveys |
| CN106207930A (en) * | 2016-07-28 | 2016-12-07 | 中天海洋***有限公司 | A kind of offshore wind farm sea cable goes out J-type protection of pipe device |
| CN209088499U (en) * | 2018-12-29 | 2019-07-09 | 中天海洋***有限公司 | A kind of monoblock type J protection of pipe device |
| CN110190573A (en) * | 2019-07-09 | 2019-08-30 | 苏州希倍优海洋工程装备有限公司 | A kind of sea cable protective device |
| CN111146754A (en) * | 2020-01-08 | 2020-05-12 | 上海泰铠码科技有限公司 | Protection device for elongated flexible member, protection assembly and installation method thereof |
-
2021
- 2021-06-30 CN CN202110730764.6A patent/CN113258525B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3073295A2 (en) * | 2015-03-26 | 2016-09-28 | CGG Services SA | Quick mount cable-protecting device usable in marine surveys |
| CN106207930A (en) * | 2016-07-28 | 2016-12-07 | 中天海洋***有限公司 | A kind of offshore wind farm sea cable goes out J-type protection of pipe device |
| CN209088499U (en) * | 2018-12-29 | 2019-07-09 | 中天海洋***有限公司 | A kind of monoblock type J protection of pipe device |
| CN110190573A (en) * | 2019-07-09 | 2019-08-30 | 苏州希倍优海洋工程装备有限公司 | A kind of sea cable protective device |
| CN111146754A (en) * | 2020-01-08 | 2020-05-12 | 上海泰铠码科技有限公司 | Protection device for elongated flexible member, protection assembly and installation method thereof |
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| CN113258525A (en) | 2021-08-13 |
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