CN116626834B - Cable laying system and cable laying method for submarine optical cable laying - Google Patents
Cable laying system and cable laying method for submarine optical cable laying Download PDFInfo
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- CN116626834B CN116626834B CN202310915656.5A CN202310915656A CN116626834B CN 116626834 B CN116626834 B CN 116626834B CN 202310915656 A CN202310915656 A CN 202310915656A CN 116626834 B CN116626834 B CN 116626834B
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- 230000001105 regulatory effect Effects 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000013307 optical fiber Substances 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 5
- 238000012876 topography Methods 0.000 description 3
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- 238000005452 bending Methods 0.000 description 2
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- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
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Abstract
The invention relates to the technical field of submarine cable laying, and provides a cable laying system and a cable laying method for laying submarine optical cables, wherein the cable laying system comprises a cable laying ship, a cable laying device, an acquisition module and a control module; the cable laying device comprises a cable storage disc, a back-twist frame and a cable laying machine, wherein the cable storage disc, the back-twist frame and the cable laying machine are sequentially arranged on the cable laying ship along the extending direction of the cable laying ship, the cable storage disc is used for storing light sea cables, the back-twist frame is used for carrying out back-twist operation on the light sea cables, and the cable laying machine is used for laying the light sea cables; the acquisition module is used for acquiring the navigation speed of the cable laying ship; the control module is used for controlling the cable laying speed of the cable laying machine based on the navigation speed. According to the cable laying system, the cable laying operation of the light sea cable is carried out in the deep sea area through the cable laying ship and the cable laying device, the cable laying speed of the cable laying machine is controlled to be higher than the sailing speed of the cable laying ship based on the sailing speed by the control module, the cable laying ship can run at a high speed, the laying efficiency is effectively improved, and meanwhile the laying quality can be effectively guaranteed.
Description
Technical Field
The invention relates to the technical field of submarine cable laying, in particular to a cable laying system and a cable laying method for laying submarine optical cables.
Background
Submarine optical cables are important carriers for information communication, are laid on the seabed, and are usually carried out by a cable laying ship or other ocean engineering vessels special for laying submarine cables when the cable laying operation is carried out on the sea.
In shallow sea areas, i.e. within 500 meters of water depth, sea cables are generally buried at a depth of 3-5 meters below the seabed by a burying mode. In deep sea areas, i.e. with water depths exceeding 500 meters, sea cables are typically laid on the seabed surface by means of a laying method, the sea cables being laid on the seabed surface by means of gravity. In the prior art, the density of sea cables is high, and when the operation is performed in a deep sea area, the navigation speed of a construction ship and the cable laying speed of a cable laying machine are limited by the sea cables, and the navigation speed and the cable laying speed are low, so that the laying efficiency is low.
Disclosure of Invention
The invention provides a cable laying system and a cable laying method for laying submarine optical cables, which are used for solving the problem of low working efficiency in the prior art of laying submarine cables.
In a first aspect, the present invention provides a cabling system for use in subsea cable routing, comprising: the device comprises a cable laying ship, a cable laying device, an acquisition module and a control module;
the cable laying device comprises a cable storage disc, a back-twist frame and a cable laying machine, wherein the cable storage disc, the back-twist frame and the cable laying machine are sequentially arranged on the cable laying ship along the extending direction of the cable laying ship, the cable storage disc is used for storing light sea cables, the back-twist frame is used for carrying out back-twist operation on the light sea cables, and the cable laying machine is used for laying the light sea cables;
the acquisition module is used for acquiring the navigation speed of the cable laying ship;
the control module is electrically connected with the acquisition module and is used for controlling the cable laying speed of the cable laying machine based on the navigation speed.
According to the cable laying system for the submarine optical cable laying, which is provided by the invention, the cable laying system for the submarine optical cable laying further comprises a detector;
the detector is arranged at the outlet end of the cable laying machine and is used for detecting the real-time tension value of the light submarine cable;
the control module is electrically connected with the detector, and controls the cable laying speed of the cable laying machine based on the comparison result of the real-time tension value and the preset threshold value.
According to the cable laying system for laying the submarine optical cable, which is provided by the invention, the cable laying system for laying the submarine optical cable further comprises a detection module and an early warning module;
the detection module is used for detecting information data of the light submarine cable laid on the seabed;
the early warning module is electrically connected with the detection module and is used for carrying out fault early warning based on the information data.
According to the cable laying system for laying the submarine optical cable, the light submarine cable comprises an outer sheath layer, an armor layer, a reinforcing layer and an optical unit;
the outer sheath layer, the armor layer, the reinforcing layer and the light unit are sequentially arranged from outside to inside, and the diameter of the light submarine cable is smaller than or equal to 12mm.
In a second aspect, the present invention provides a cabling method for a cabling system for a submarine cable cabling, comprising:
acquiring the sailing speed of the cable laying ship;
based on the navigation speed, controlling the cable laying speed of the cable laying machine for laying the light sea cable;
the cable laying speed is a preset multiple of the navigation speed, and the preset multiple is greater than 1.
According to the cable laying method provided by the invention, the cable laying speed of the light sea cable laid by the cable laying machine is controlled based on the navigation speed, and the cable laying speed comprises the following steps:
acquiring a real-time tension value of the light submarine cable;
and controlling the cable laying speed based on the comparison result of the real-time tension value and a preset threshold value.
According to the cable laying method provided by the invention, the controlling the cable laying speed based on the comparison result of the real-time tension value and the preset threshold value comprises the following steps:
determining that the real-time tension value is smaller than a first preset threshold value, and reducing the cable laying speed;
determining that the real-time tension value is larger than a second preset threshold value, and adjusting the cable laying speed;
wherein the second preset threshold is greater than the first preset threshold.
According to the cable laying method provided by the invention, before the navigation speed of the cable laying ship is obtained, the cable laying method further comprises the following steps:
burying a heavy submarine cable in a shallow sea area;
and carrying out assembling operation on the light submarine cable and the heavy submarine cable.
The cable laying method provided by the invention further comprises the following steps:
detecting information data of the light submarine cable laid on the seabed;
and carrying out fault early warning based on the information data.
According to the cable laying method provided by the invention, the range of the preset multiple is 1.05-1.1.
According to the cable laying system and the cable laying method for the submarine optical cable laying, the cable storage disc, the back-twist frame and the cable laying machine are sequentially arranged on the cable laying boat, the light submarine cable laying operation is carried out in a deep sea area through the cable laying boat and the cable laying device, the collection module collects the navigation speed of the cable laying boat, the control module controls the cable laying speed of the cable laying machine to be greater than the navigation speed of the cable laying boat based on the navigation speed, the cable laying boat can operate at a high speed, the laying efficiency is effectively improved, and meanwhile the laying quality can be effectively guaranteed.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of the operation of a cabling system for undersea cable routing provided by the present invention;
FIG. 2 is a schematic diagram of a cable arrangement according to the present invention;
FIG. 3 is a schematic view of the light submarine cable according to the invention;
FIG. 4 is a flow chart of a cabling method based on a cabling system for undersea fiber optic cable cabling provided by the present invention;
reference numerals: 1: a cable laying ship; 2: a cable laying device; 21: a cable storage disc; 22: a back-twist frame; 23: a cable laying machine; 3: positioning a ship; 4: a light sea cable; 41: an outer sheath layer; 42: an armor layer; 43: a reinforcing layer; 44: a light unit; 5: heavy sea cable; 6: seabed. 7: a shore-based machine room.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
A cabling system and a cabling method for use in the cabling of submarine optical cables according to embodiments of the present invention are described below with reference to fig. 1-4.
As shown in fig. 1 and 2, a cabling system for laying an undersea optical fiber cable according to an embodiment of the present invention includes: the device comprises a cable laying ship 1, a cable laying device 2, an acquisition module and a control module.
The cable laying device 2 comprises a cable storage disc 21, a back-twist frame 22 and a cable laying machine 23, wherein the cable storage disc 21, the back-twist frame 22 and the cable laying machine 23 are sequentially arranged on the cable laying ship 1 along the extending direction of the cable laying ship 1, the cable storage disc 21 is used for storing the light submarine cable 4, the back-twist frame 22 is used for carrying out back-twist operation on the light submarine cable 4, and the cable laying machine 23 is used for laying the light submarine cable 4. The acquisition module is used for acquiring the navigation speed of the cable boat 1; the control module is electrically connected with the acquisition module and is used for controlling the cable laying speed of the cable laying machine 23 based on the navigation speed.
Specifically, the cabling system for the laying of the submarine optical cable comprises a cabling boat 1, a cabling device 2, an acquisition module and a control module. The cable laying device 2 comprises a cable storage disc 21, a back-twist rack 22, a cable laying machine 23 and other devices, wherein the cable storage disc 21, the back-twist rack 22 and the cable laying machine 23 are all universal devices for laying sea cables, and the cable storage disc 21, the back-twist rack 22 and the cable laying machine 23 are arranged at intervals along the extending direction of the cable laying ship 1.
The cable storage disc 21 is used for placing the light submarine cable 4, the cable storage disc 21 can be formed by splicing sectional materials, the cable storage disc 21 comprises an inner fence and an outer fence which are coaxially arranged, and the diameter of the inner fence and the diameter of the outer fence are arranged according to actual requirements. For example, the diameter of the inner rail is greater than or equal to two meters, the diameter of the outer rail is adapted to the transverse dimensions of the deployment vessel 1, and the area enclosed between the inner rail and the outer rail is used for the placement of the lightweight sea cable 4.
The back-twist rack 22 and the cable storage 21 are arranged at intervals, for example, the center-to-center distance between the back-twist rack 22 and the cable storage 21 is 5 meters, and the height of the back-twist rack 22 can reach 8 meters. A plurality of guide wheels are arranged at intervals along the running direction of the back-twist frame 22. The light submarine cable 4 wound on the cable storage disc 21 is pulled to the back-twist frame 22 by the tractor, and the back-twist frame 22 is used for eliminating bending stress on the light submarine cable 4. The cable laying machine 23 is a linear cable laying machine 23, the cable laying machine 23 is driven by tires, and the clamping force of the tires in a single group ranges from 0 kilogram force to 500 kilogram force.
The cable storage disc 21, the back-twist frame 22 and the cable laying machine 23 are sequentially arranged, the light submarine cable 4 wound on the cable storage disc 21 is pulled to the back-twist frame 22, the light submarine cable is pulled to the cable laying machine 23 after being back-twisted by the back-twist frame 22, and the cable laying machine 23 is used for laying the light submarine cable 4 to a deep sea area along the preset track direction. A flat-running cable guide channel is arranged between the back-twisting frame 22 and the cable laying machine 23, so that the back-twisted light submarine cable 4 is conveniently pulled to the cable laying machine 23 along a flat track line.
It will be appreciated that the cable laying system further comprises a positioning vessel 3, and that the positioning vessel 3 is also provided with a cable laying device, by which the heavy sea cable 5 is buried in shallow sea areas. The method for burying the heavy submarine cable 5 in the shallow sea area is a general method in submarine cable laying construction, and is not specifically described in detail, and the invention mainly describes the laying of the light submarine cable 4 in the deep sea area.
The light submarine cable 4 laid by the cable laying system has the characteristics of low density and small diameter. The weight of the light submarine cable 4 in the seawater is less than or equal to 0.08 kg/m, the diameter of the light submarine cable 4 is less than or equal to 12mm, the cable diameter is small, the light submarine cable 4 with enough length can be loaded on the cable laying ship 1 at a time, and the light submarine cable 4 is suitable for long-distance laying operation, for example, the light submarine cable 4 with the length of more than 600km can be loaded at a time. The lightweight submarine cable 4 has the characteristics of small diameter and low density, and the size of the cable storage tray 21 is correspondingly reduced under the condition of meeting the requirement of being capable of loading a single laying length, and the size specification of the cable laying boat 1 for bearing the cable storage tray 21, the back-twist rack 22 and the cable laying machine 23 is correspondingly reduced. The use requirement can be met by using the miniaturized cable laying ship 1, the cable laying ship 1 can be modified and manufactured by selecting a fishing boat or a scientific investigation boat, and the cable laying ship has the advantages of high flexibility, high concealment and the like during operation.
The light submarine cable 4 has the characteristics of low density and small diameter, the hydrodynamic constant of the light submarine cable 4 is about 0.4-0.5 m/s, after the light submarine cable 4 enters seawater, the light submarine cable 4 slowly sinks, the sinking speed of the light submarine cable 4 is 0.4-0.5 m/s, and the light submarine cable 4 is thrown at a high speed, so that the light submarine cable 4 slowly sinks in a semi-suspended state, and the tension born by the light submarine cable 4 can be effectively reduced by increasing the laying allowance.
In the conventional process of laying sea cables, it is generally required to ensure that the navigation speed of the ship is consistent with the laying speed of the laying machine 23 so as to control the laying quality, and meanwhile, the laying speed is generally controlled to be 2-3 knots. The cable laying system also comprises an acquisition module and a control module, wherein the acquisition module is electrically connected with the control module, the acquisition module can be a GPS positioning system, and the navigation speed of the cable laying ship 1 can be acquired in real time through the GPS positioning system. The control module controls the cable laying speed of the cable laying machine 23 according to the sailing speed, wherein the cable laying speed is greater than the sailing speed, for example, the cable laying speed is 1.05-1.1 times of the sailing speed.
The laid submarine cables are light submarine cables 4, the laying ship 1 can sail according to a preset track at a sailing speed not lower than 6 seas/h, the laying machine 23 lays the light submarine cables 4 at a laying speed higher than 6 seas/h, and laying efficiency is effectively improved. Meanwhile, the cable laying speed is higher than the sailing speed, and after the light submarine cable 4 is put into water, the light submarine cable can slowly sink in a semi-suspended state, so that the tension borne by the light submarine cable 4 is reduced, and further the laying quality is guaranteed.
In the embodiment of the invention, the cable storage disc 21, the back-twist frame 22 and the cable laying machine 23 are sequentially arranged on the cable laying boat 1, the laying operation of the light sea cable 4 is carried out in a deep sea area through the cable laying boat 1 and the cable laying device 2, the collection module collects the navigation speed of the cable laying boat 1, the control module controls the cable laying speed of the cable laying machine 23 to be greater than the navigation speed of the cable laying boat 1 based on the navigation speed, the cable laying boat 1 can run at a high speed, the laying efficiency is effectively improved, and meanwhile, the laying quality is effectively ensured.
In an alternative embodiment, the cabling system for subsea cable routing further comprises a detector; the detector is arranged at the outlet end of the cable distributor 23 and is used for detecting the real-time tension value of the light submarine cable 4; the control module is electrically connected with the detector and controls the cable laying speed of the cable laying machine 23 based on the comparison result of the real-time tension value and the preset threshold value.
Specifically, in the laying operation process, the light submarine cable 4 is ensured to be fluctuated along the topography of the seabed 6 and laid on the surface of the seabed 6, so that the light submarine cable 4 can maintain proper tightness. The light submarine cable 4 is too large in tension and easy to break, the light submarine cable 4 is too small in tension and easy to pile, and the laying quality of the light submarine cable 4 can be affected by the phenomena. The laying should therefore be controlled with a margin, the tension to which the lightweight sea cable 4 is subjected during laying being no greater than the allowable working tensile load, for example, the tension of the lightweight sea cable 4 being no greater than 8KN.
The cabling system for laying the submarine optical cable further comprises a detector, wherein the detector is positioned at an outgoing end of the cabling machine 23, and the light submarine cable 4 further passes through the detector after passing through the cabling machine 23 and then enters the sea. The detector comprises a dynamometer, the dynamometer is used for detecting a real-time tension value of the light submarine cable 4, and the control module controls the cable laying speed based on a comparison result of the real-time tension value and a preset threshold value. For example, the real-time tension value is smaller than the first preset threshold value, which indicates that the cable laying speed is faster at this time, and the light submarine cable 4 is too loose to be stacked on the seabed 6, so that the control module reduces the cable laying speed. The real-time tension value is larger than a second preset threshold value, so that the cable laying speed is low, the light submarine cable 4 is damaged due to the fact that the tension is large, and the control module increases the cable laying speed. And controlling the cable laying speed based on a comparison result of the real-time tension value and a preset threshold value so as to ensure the laying quality.
Further, the detector further comprises a length measuring instrument which can be connected in series with the force measuring instrument, wherein the length measuring instrument is used for detecting the length of the laid light submarine cable 4, the original length of the light submarine cable 4 wound on the cable storage disc 21 is known in advance, and the surplus length of the light submarine cable 4 can be obtained by the difference between the original length and the length of the laid submarine cable. The obtained allowance length is convenient for operators to know the residual cable storage amount on the cable storage disc 21 in real time in the laying operation process.
In the embodiment of the invention, the detector is used for detecting the real-time tension value of the light submarine cable 4, and controlling the cable laying speed of the cable laying machine 23 according to the comparison result of the real-time tension value and the preset threshold value, so that the light submarine cable 4 is in a proper tightness state, and further the laying quality can be effectively ensured.
In an alternative embodiment, the cabling system for the submarine cable arrangement further comprises a detection module and an early warning module; the detection module is used for detecting information data of the light submarine cable 4 laid on the seabed 6; the early warning module is electrically connected with the detection module and is used for carrying out fault early warning based on information data.
Specifically, the detection module may be an optical time domain reflectometer, and in the process of cable laying operation, the optical time domain reflectometer may be used to detect information data of the light submarine cable 4 laid on the seabed 6, where the information data includes information such as length, loss rate, breaking position, and the like of the light submarine cable 4.
For example, along a laid preset track path, the length value detected by the optical time domain reflectometer is smaller than the set length value of the preset track path, which indicates that the light submarine cable 4 may be broken in a certain area; the length value detected by the optical time domain reflectometer is larger than the set length value of the preset track route, which indicates that the light submarine cable 4 may have a stacking phenomenon in a certain area. The light submarine cable 4 is possibly wound or suspended and the like under the influence of the topography of the seabed 6 in the laying process of the seabed 6, and the laying quality of the light submarine cable 4 on the seabed 6 can be known in time by detecting the information data of the light submarine cable 4 through an optical time domain reflectometer.
The early warning module can be an audible and visual alarm which is arranged on the cable laying ship 1 and can perform fault early warning in a mode of sounding or visible light. When the laying posture is not matched with the target posture, for example, when phenomena such as breakage, winding or suspension occur in the laying process of the light submarine cable 4, the early warning module carries out audible and visual warning to prompt an operator to carry out fault detection, and then laying operation is carried out after the fault is removed, so that the laying quality is ensured.
In an alternative embodiment, as shown in fig. 3, the lightweight submarine cable 4 comprises an outer jacket layer 41, an armor layer 42, a reinforcement layer 43 and an optical unit 44, which are arranged in order from outside to inside, the lightweight submarine cable 4 having a diameter of less than or equal to 12mm. The above-mentioned offshore cable laying system can be used for laying the light-weight submarine cable 4 in the deep sea area.
The outer sheath layer 41 can be made of polyethylene material, the outer sheath layer 41 is a polyethylene sleeve layer, and the hydrostatic pressure resistance of the outer sheath layer 41 is not less than 60 megapascals. The armor layer 42 is formed by winding a stainless steel band, and the breaking tension of the armor layer 42 is not less than 20KN. The reinforcing layer 43 comprises a plurality of stainless steel wires, the plurality of stainless steel wires are distributed between the light unit 44 and the armor layer 42 in a ring-wise manner around the central axis of the light unit 44, and the plurality of stainless steel wires arranged between the light unit 44 and the armor layer 42 can effectively improve the mechanical properties of the light submarine cable 4. The optical unit 44 includes an inner sheath layer, a plurality of optical fibers and a filling layer, wherein the inner sheath layer can be made of stainless steel materials, the inner sheath layer is a stainless steel sleeve layer, and the number of the optical fibers is set according to actual requirements so as to meet transmission performance. The inner sheath layer is filled with a filling material, the filling material can be water-blocking silicone oil, and the service life of the optical fiber is guaranteed through the inner sheath layer and the filling layer.
The diameter of the light submarine cable 4 is smaller than or equal to 12mm, the light submarine cable 4 has the characteristics of low density and small diameter, the hydrodynamic constant of the light submarine cable 4 is about 0.4-0.5 m/s, after the light submarine cable 4 is laid in seawater, the light submarine cable 4 slowly sinks, the sinking speed of the light submarine cable 4 is 0.4-0.5 m/s, and the light submarine cable 4 slowly sinks in a semi-suspended state by rapidly throwing the light submarine cable 4, so that the tension of the light submarine cable 4 is effectively reduced.
After the light submarine cable 4 is put into water, the light submarine cable can slowly sink in a semi-suspended state, and the tension born by the light submarine cable 4 can be reduced. The laid submarine cables are light submarine cables 4, the laying ship 1 can sail according to a preset track at a sailing speed not lower than 6 seas/h, the laying machine 23 lays the light submarine cables 4 at a laying speed higher than 6 seas/h, and laying efficiency is effectively improved. Meanwhile, the cable laying speed is 1.05-1.1 times of the sailing speed, enough laying allowance is ensured in the laying operation process, and after the light submarine cable 4 is put into water, the light submarine cable can slowly sink in a semi-suspended state, so that the tension borne by the light submarine cable 4 is reduced, and further the laying quality is guaranteed.
As shown in fig. 4, the present invention also provides a cabling method of a cabling system for laying an undersea optical fiber cable, the cabling method comprising the steps of:
step 101: acquiring the sailing speed of the cable laying ship 1;
step 102: based on the navigation speed, controlling the cable laying speed of the light submarine cable 4 laid by the cable laying machine 23; the cable laying speed is a preset multiple of the navigation speed, and the preset multiple is larger than 1.
Specifically, first, the heavy sea cable 5 is buried in a shallow sea area, the positioning ship 3 carries cable laying equipment and the heavy sea cable 5 to travel to the shallow sea area at a preset distance from the shore-based machine room 7, and the heavy sea cable 5 is buried in the shallow sea area along a preset track path of the shallow sea area through the cable laying equipment.
After the heavy submarine cable 5 is buried, the positioning ship 3 starts a power positioning system, the positioning ship 3 is located in a splicing area, and the splicing area is located between a shallow sea area and a deep sea area. The deployment boat 1 travels to the splicing area, the deployment boat 1 approaches the positioning boat 3, and the light sea cable 4 on the cable storage tray 21 is towed to the positioning boat 3. The operator completes the assembly operation of the joints of the light submarine cable 4 and the heavy submarine cable 5 on the positioning ship 3, and after the assembly operation is completed, the joint ends are laid on the seabed 6 in a shape of a Chinese character 'ji'.
After the splicing operation of the joint is completed, the laying operation of the light submarine cable 4 is started. The cable storage disc 21, the back-twist frame 22 and the cable laying machine 23 are sequentially arranged on the cable laying boat 1 along the extending direction of the cable laying boat 1, and after the bending stress of the light submarine cable 4 on the cable storage disc 21 is eliminated through the back-twist frame 22, the light submarine cable 4 reaches the cable laying machine 23, and the cable laying machine 23 performs the laying operation of the light submarine cable 4. The cable laying ship 1 runs along the preset track direction in the deep sea area, the acquisition module acquires the sailing speed of the cable laying ship 1 in real time, and the control module controls the cable laying speed of the cable laying machine 23 based on the sailing speed of the cable laying ship 1.
In the cable laying operation, the cable laying speed is a preset multiple of the sailing speed, and the cable laying speed is greater than the sailing speed, for example, the cable laying speed is 1.05-1.1 times of the sailing speed. The cable laying speed is greater than the navigation speed, and after the light submarine cable 4 enters water, the light submarine cable can slowly sink in a semi-suspended state, so that the tension born by the light submarine cable 4 can be reduced. The laid submarine cables are light submarine cables 4, the laying ship 1 can sail in a preset track direction at a sailing speed not lower than 6 seas/h, the laying machine 23 lays the light submarine cables 4 at a laying speed higher than 6 seas/h, and laying efficiency is effectively improved.
In the embodiment of the invention, the laying operation of the light submarine cable 4 is carried out in a deep sea area through the cable laying boat 1 and the cable laying device 2, the light submarine cable 4 can slowly sink in a semi-suspended state, the acquisition module acquires the navigation speed of the cable laying boat 1, the control module controls the cable laying speed of the cable laying machine 23 to be greater than the navigation speed based on the navigation speed, the cable laying boat 1 can run at a high speed, the laying efficiency is effectively improved, and meanwhile, the laying quality can be effectively ensured.
In an alternative embodiment, controlling the laying speed of the lightweight sea cable 4 by the laying machine 23 based on the speed of travel comprises:
acquiring a real-time tension value of the light submarine cable 4;
and controlling the cable laying speed based on the comparison result of the real-time tension value and the preset threshold value.
Specifically, the cabling system for laying the submarine optical cable further comprises a detector, wherein the detector comprises a dynamometer, the dynamometer is arranged at an outgoing end of the cabling machine 23, and the light submarine cable 4 further passes through the dynamometer after passing through the cabling machine 23 and then enters the sea. The dynamometer is used for detecting a real-time tension value of the light submarine cable 4, and the control module controls the cable laying speed based on a comparison result of the real-time tension value and a preset threshold value. The preset threshold comprises a first preset threshold and a second preset threshold, and the second preset threshold is larger than the first preset threshold. The real-time tension value is in the preset threshold range, so that the cable laying speed is matched with the sailing speed, the light submarine cable 4 is in a proper tightness state, and the laying quality can be guaranteed.
For example, the real-time tension value is smaller than the first preset threshold value, which indicates that the cable laying speed is faster at this time, and the light submarine cable 4 is too loose to be stacked on the seabed 6, so that the control module reduces the cable laying speed. The real-time tension value is larger than a second preset threshold value, so that the cable laying speed is low, the light submarine cable 4 is damaged due to the fact that the tension is large, and the control module increases the cable laying speed. Based on the comparison result of the real-time tension value and the preset threshold value, the cable laying speed and the sailing speed are controlled to be in a preset multiple relation, and laying allowance is guaranteed so as to guarantee laying quality.
In the embodiment of the invention, the cable laying speed of the cable laying machine 23 is regulated according to the comparison result of the real-time tension value and the preset threshold value, and meanwhile, the cable laying speed and the navigation speed are controlled to be in a preset multiple relationship, so that the light sea cable 4 is in a proper tightness state, and the laying quality is effectively ensured.
Further, the detector further comprises a length measuring instrument which can be connected in series with the force measuring instrument, wherein the length measuring instrument is used for detecting the length of the laid light submarine cable 4, the original length of the light submarine cable 4 wound on the cable storage disc 21 is known in advance, and the surplus length of the light submarine cable 4 can be obtained by the difference between the original length and the length of the laid submarine cable. The obtained allowance length is convenient for operators to know the residual cable storage amount on the cable storage disc 21 in real time in the laying operation process.
In an alternative embodiment, the cabling method further comprises:
detecting information data of a light submarine cable 4 laid on the seabed 6;
and carrying out fault early warning based on the information data.
Specifically, the detection module may be an optical time domain reflectometer, and in the process of cable laying operation, the optical time domain reflectometer may be used to detect information data of the light submarine cable 4 laid on the seabed 6, where the information data includes information such as length, loss rate, breaking position, and the like of the light submarine cable 4.
For example, along a preset track path, the length value detected by the optical time domain reflectometer is smaller than the set length value of the preset track path, which indicates that the light submarine cable 4 may be broken in a certain area; the length value detected by the optical time domain reflectometer is larger than the set length value of the preset track route, which indicates that the light submarine cable 4 may have a stacking phenomenon in a certain area. The light submarine cable 4 is possibly wound or suspended and the like under the influence of the topography of the seabed 6 in the laying process of the seabed 6, and the laying quality of the light submarine cable 4 on the seabed 6 can be known in time by detecting the information data of the light submarine cable 4 through an optical time domain reflectometer.
The early warning module can be an audible and visual alarm, and the audible and visual alarm can perform fault early warning in a mode of emitting sound or visible light. When the laying posture is not matched with the target posture, the early warning module carries out audible and visual warning to prompt an operator to carry out fault detection, and then carries out laying operation after the fault is removed, so that the laying quality is ensured.
By adopting the cable laying system and the cable laying method for laying the light sea cable 4 in the deep sea area, the light sea cable 4 stored on the cable storage disc 21 is pulled to the cable laying machine 23 after torsion is eliminated by the back-torsion frame 22, the cable laying machine 23 performs cable laying operation, the collection module collects the navigation speed of the cable laying ship 1, the control module controls the cable laying speed of the cable laying machine 23 to be greater than the navigation speed of the cable laying ship 1 based on the navigation speed, the cable laying ship 1 can operate at a high speed, the laying efficiency is effectively improved, and meanwhile, the laying quality can be effectively guaranteed.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A cabling system for use in a submarine cable deployment, comprising: the device comprises a cable laying ship, a cable laying device, an acquisition module and a control module;
the cable laying device comprises a cable storage disc, a back-twist frame and a cable laying machine, wherein the cable storage disc, the back-twist frame and the cable laying machine are sequentially arranged on the cable laying ship along the extending direction of the cable laying ship, the cable storage disc is used for storing light sea cables, the back-twist frame is used for carrying out back-twist operation on the light sea cables, and the cable laying machine is used for laying the light sea cables;
the light submarine cable comprises an outer sheath layer, an armor layer, a reinforcing layer and an optical unit; the outer sheath layer, the armor layer, the reinforcing layer and the light unit are sequentially arranged from outside to inside, the weight of the light submarine cable in seawater is less than or equal to 0.08 kg/m, the diameter of the light submarine cable is less than or equal to 12mm, and the hydrodynamic constant of the light submarine cable is 0.4-0.5 m/s;
the acquisition module is used for acquiring the navigation speed of the cable laying ship;
the control module is electrically connected with the acquisition module and is used for controlling the cable laying speed of the cable laying machine based on the navigation speed, the cable laying speed is 1.05-1.1 times of the navigation speed, and the navigation speed is not lower than 6 seas/hour, so that the light submarine cable can slowly sink in a semi-suspended state after being immersed in water, and the tension born by the light submarine cable is reduced;
based on the navigation speed, the control of the cable laying speed of the cable laying machine for laying the light sea cable comprises the following steps: acquiring a real-time tension value of the light submarine cable; controlling the cable laying speed based on the comparison result of the real-time tension value and a preset threshold value;
and controlling the cable laying speed based on the comparison result of the real-time tension value and a preset threshold value comprises: when the real-time tension value is determined to be smaller than a first preset threshold value, reducing the cable laying speed; when the real-time tension value is determined to be larger than a second preset threshold value, the cable laying speed is regulated; wherein the second preset threshold is greater than the first preset threshold.
2. The cabling system for fiber optic cable routing of claim 1, wherein the cabling system for fiber optic cable routing further comprises a detector;
the detector is arranged at the outlet end of the cable laying machine and comprises a dynamometer, and the dynamometer is used for detecting the real-time tension value of the light submarine cable;
the control module is electrically connected with the detector, and controls the cable laying speed of the cable laying machine based on the comparison result of the real-time tension value and a preset threshold value;
the detector further comprises a length measuring instrument, the length measuring instrument is connected with the force measuring instrument in series, the length measuring instrument is used for detecting the length of the laid light submarine cable, and the surplus length of the light submarine cable can be obtained according to the difference value between the original length of the light submarine cable wound on the cable storage disc and the length of the laid light submarine cable.
3. The cabling system for fiber optic cable routing of claim 1, further comprising a detection module and an early warning module;
the detection module is used for detecting information data of the light submarine cable laid on the seabed;
the early warning module is electrically connected with the detection module and is used for carrying out fault early warning based on the information data.
4. A cabling method for a cabling system for a submarine cable cabling according to any one of claims 1 to 3, comprising:
acquiring the sailing speed of the cable laying ship;
based on the navigation speed, controlling the cable laying speed of the cable laying machine for laying the light sea cable;
the speed of the cable is 1.05-1.1 times of the sailing speed, and the sailing speed is not lower than 6 sea/hour, so that the light sea cable can slowly sink in a semi-suspended state after being immersed in water, and the tension born by the light sea cable is reduced;
based on the navigation speed, the control of the cable laying speed of the cable laying machine for laying the light sea cable comprises the following steps: acquiring a real-time tension value of the light submarine cable; controlling the cable laying speed based on the comparison result of the real-time tension value and a preset threshold value;
and controlling the cable laying speed based on the comparison result of the real-time tension value and a preset threshold value comprises: when the real-time tension value is determined to be smaller than a first preset threshold value, reducing the cable laying speed; when the real-time tension value is determined to be larger than a second preset threshold value, the cable laying speed is regulated; wherein the second preset threshold is greater than the first preset threshold.
5. The cabling method of claim 4, wherein prior to obtaining the speed of travel of the cabling boat further comprises:
burying a heavy submarine cable in a shallow sea area;
and carrying out assembling operation on the light submarine cable and the heavy submarine cable.
6. The cabling method of claim 4, further comprising:
detecting information data of the light submarine cable laid on the seabed;
and carrying out fault early warning based on the information data.
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| CN202310915656.5A CN116626834B (en) | 2023-07-25 | 2023-07-25 | Cable laying system and cable laying method for submarine optical cable laying |
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| CN202310915656.5A CN116626834B (en) | 2023-07-25 | 2023-07-25 | Cable laying system and cable laying method for submarine optical cable laying |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0686439A (en) * | 1992-08-31 | 1994-03-25 | Fujikura Ltd | Method of laying submarine cable |
| CN103247977A (en) * | 2013-05-14 | 2013-08-14 | 国家电网公司 | Multiphase submarine cable transversal arrangement circularly laying construction method |
| CN112520503A (en) * | 2020-12-11 | 2021-03-19 | 中石化石油工程技术服务有限公司 | Cable turntable of submarine cable laying vessel and cable laying machine control device |
| CN112978497A (en) * | 2021-04-30 | 2021-06-18 | 广东电网有限责任公司 | Paying-off device |
| CN213620165U (en) * | 2020-10-21 | 2021-07-06 | 中国电建集团港航建设有限公司 | Double-cable same-ditch cable laying ship |
| CN116466562A (en) * | 2023-04-06 | 2023-07-21 | 合肥神马科技集团有限公司 | Marine hydraulic cable distribution machine electrical system |
-
2023
- 2023-07-25 CN CN202310915656.5A patent/CN116626834B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0686439A (en) * | 1992-08-31 | 1994-03-25 | Fujikura Ltd | Method of laying submarine cable |
| CN103247977A (en) * | 2013-05-14 | 2013-08-14 | 国家电网公司 | Multiphase submarine cable transversal arrangement circularly laying construction method |
| CN213620165U (en) * | 2020-10-21 | 2021-07-06 | 中国电建集团港航建设有限公司 | Double-cable same-ditch cable laying ship |
| CN112520503A (en) * | 2020-12-11 | 2021-03-19 | 中石化石油工程技术服务有限公司 | Cable turntable of submarine cable laying vessel and cable laying machine control device |
| CN112978497A (en) * | 2021-04-30 | 2021-06-18 | 广东电网有限责任公司 | Paying-off device |
| CN116466562A (en) * | 2023-04-06 | 2023-07-21 | 合肥神马科技集团有限公司 | Marine hydraulic cable distribution machine electrical system |
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| CN116626834A (en) | 2023-08-22 |
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