CN115649387A - Seabed deep-buried cable fishing system and method - Google Patents
Seabed deep-buried cable fishing system and method Download PDFInfo
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- CN115649387A CN115649387A CN202211204186.3A CN202211204186A CN115649387A CN 115649387 A CN115649387 A CN 115649387A CN 202211204186 A CN202211204186 A CN 202211204186A CN 115649387 A CN115649387 A CN 115649387A
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Abstract
A system and a method for salvaging a submarine deeply buried cable comprise: the surface of water control power station and the underwater salvage platform who links to each other through the umbilical cable with it, wherein: the water surface monitoring power station provides strong electric power and monitoring information transmission for the underwater fishing platform through an umbilical cable; the water surface monitoring power station realizes the detection, positioning, spraying, dredging, grabbing and lifting of the submarine deeply buried cable through the operation of a remote control underwater fishing platform until the deeply buried cable is safely fished to a mud surface or a water surface for subsequent treatment. The invention salvages the cable buried under the mud deeply in the seabed, and has the characteristics of comprehensive functions, convenient use, small environmental destruction and the like.
Description
Technical Field
The invention relates to a technology in the field of deep sea fishing, in particular to a system and a method for fishing a submarine deeply buried cable.
Background
In industries such as underwater rescue, deep sea salvage or offshore oil and gas, the search and salvage of underwater deep buried objects such as seabed oil and gas pipelines, seabed optical cables and the like are often involved. The submarine deeply buried cable is salvaged under the influence of surrounding sludge, and the problems of high target finding difficulty, difficulty in excavation, high construction risk and the like exist. The existing submarine cable salvage technology mostly adopts a mode similar to pure machinery, is only suitable for salvaging submarine surfaces or shallow buried cables, and simultaneously needs to obtain accurate information such as target position, depth and the like in advance.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a submarine deep-buried cable fishing system and a submarine deep-buried cable fishing method. The invention salvages the cable buried under the mud deeply in the seabed, and has the characteristics of comprehensive functions, convenient use, small environmental destruction and the like.
The cable fishing device has the functions of detecting deeply buried cables, removing sludge and fishing cables.
The invention is realized by the following technical scheme:
the invention relates to a submarine deep-buried cable fishing system, which comprises: the surface of water control power station and the underwater salvage platform who links to each other through the umbilical cable with it, wherein: the water surface monitoring power station provides strong electric power and monitoring information transmission for the underwater salvage platform through an umbilical cable; the water surface monitoring power station realizes the detection, positioning, spraying, dredging, grabbing and lifting of the submarine deeply buried cable through the operation of a remote control underwater fishing platform until the deeply buried cable is safely fished to a mud surface or a water surface for subsequent treatment.
The surface of water control power station include: power system, control system, set up power supply unit and control and manipulation unit in the container, wherein: the power supply unit is connected with the power system through a power channel in the umbilical cable to provide strong electric power for the operation of the underwater system; the monitoring and operating unit is connected with the control system through a communication channel in the umbilical cable, and receives sensor data of the control system and transmits a control command.
The underwater fishing platform comprises: the main frame and set up buoyancy material, propeller, hydraulic system under water, electric control system, pressure compensation system, hook cable ware, portable spouting towards the mechanism, carry the cable ware, spout towards the system on it, wherein: the underwater hydraulic system is respectively connected with the propeller, the cable hooking device, the movable spraying and flushing mechanism and the cable lifting device through oil pipes to provide hydraulic power and control; the underwater electric control system is respectively connected with the water surface monitoring power station, the underwater hydraulic system and the underwater sensors through cables, acquires data of each underwater sensor and transmits the data to the water surface through an umbilical cable, and meanwhile receives a water surface control instruction to realize motion control of the underwater salvaging platform and operation control of each salvaging tool; the pressure compensation system is respectively connected with the underwater electric control system and the underwater hydraulic system and provides pressure compensation to keep the balance of internal pressure and external pressure.
Technical effects
The invention utilizes the specially designed cable hooking device, the movable spraying and punching mechanism and the cable lifting device to be matched with an unmanned Remote Operated Vehicle (ROV) floating platform to realize the functions of detecting, positioning, dredging, grabbing and lifting the cable deeply buried under the mud; the movable spraying and flushing mechanism can reduce the integral size of the platform and enlarge the cleaning range of submarine cable sludge. The underwater cable salvage method can perform underwater cable salvage operation in the environment with the water depth exceeding 100 m, the underground salvage depth of mud can reach 4 m, the soil breaking excavation amount is reduced by at least 60-70%, and the operation efficiency, the influence on the underwater environment and the cable protection effect are obviously higher than those of a conventional operation method of full excavation.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a general layout of an underwater fishing platform;
FIG. 3 is a state diagram of the main frame;
FIG. 4 is a schematic view of the cable hooking device and the movable spraying mechanism;
FIG. 5 is an enlarged schematic view of the cable hooker;
FIG. 6 is an enlarged schematic view of the movable jetting mechanism;
FIG. 7 is a schematic view of a cable lifter;
in the figure: (a) is an initial state; (b) is a lowering state; (c) the cable is grabbed by the paw; (d) the claws are in a closed state after grabbing the cable; (e) the cable is grabbed and then lifted;
FIG. 8 is a schematic view of a cable penetration mechanism;
FIG. 9 is a schematic view of a spray system;
FIG. 10 is a schematic view of the working state of the present invention;
in the figure: (a) in a seated position; (b) the cable hooking device is in a touch state; (c) the movable spraying mechanism is in a state after being lowered; (d) the movable spraying mechanism is in a clear state; (e) is; (f) the cable is grabbed by the cable lifting device; (g) the state after the thread hooking device is recovered; (h) the cable enters a bayonet state after being lifted; (i) presenting a mud-faced condition for the wire.
Detailed Description
As shown in fig. 1, the present embodiment relates to a submarine deep-buried cable fishing system, which includes: the surface of water control power station and the underwater salvage platform who links to each other through the umbilical cable with it, wherein: the water surface monitoring power station provides strong electric power and monitoring information transmission for the underwater salvage platform through an umbilical cable; the water surface monitoring power station realizes the detection, positioning, spraying, dredging, grabbing and lifting of the submarine deeply buried cable through the operation of a remote control underwater fishing platform until the deeply buried cable is safely fished to a mud surface or a water surface for subsequent treatment.
And the water surface monitoring power station stores and retracts the umbilical cable through a winch.
The surface of water control power station include: power system, control system, set up power supply unit and control and manipulation unit in the container, wherein: the power supply unit is connected with the power system through a power channel in the umbilical cable to provide strong electric power for the operation of the underwater system; the monitoring and control unit is connected with the control system through a communication channel in the umbilical cable, and receives sensor data of the control system and transmits a control command.
As shown in fig. 2 and 4, the underwater fishing platform comprises: the device comprises a main frame 1, and a buoyancy material 2, a propeller 3, an underwater hydraulic system 4, an underwater electric control system 5, a pressure compensation system 6, a pair of cable hooking devices 7, a pair of movable spraying and flushing mechanisms 8, a pair of cable lifting devices 9 and a spraying and flushing system 10 which are arranged on the main frame, wherein: the underwater hydraulic system is respectively connected with the propeller, the cable hooking device, the movable spraying and flushing mechanism and the cable lifting device through oil pipes to provide hydraulic power and control; the underwater electric control system is respectively connected with the water surface monitoring power station, the underwater hydraulic system and the underwater sensors through cables, acquires data of each underwater sensor and transmits the data to the water surface through an umbilical cable, and meanwhile receives a water surface control instruction to realize motion control of the underwater salvaging platform and operation control of each salvaging tool; the pressure compensation system is respectively connected with the underwater electric control system and the underwater hydraulic system and used for providing pressure compensation to keep the balance of internal pressure and external pressure.
The pair of cable hooking devices, the pair of cable lifting devices and the pair of movable spraying and flushing mechanisms are symmetrically arranged from the center to two sides of the main frame.
As shown in fig. 3, the main frame 1 includes: top layer structure 101, middle level structure 102, hoisting point 103 and bottom smooth and warped 104, wherein: the lifting point 103 is arranged on the top layer structure 101, the middle layer structure 102 is provided with tools, mechanisms and various subsystem components, the bottom slide and warp 104 is connected with the middle layer structure 102 through a mechanical installation interface, and the bottom slide and warp is in contact with the seabed during operation to play a role in reducing sliding resistance and reducing specific grounding pressure.
The top layer structure 101 is provided with a buoyancy material and a vertical propeller.
The middle part of the sliding block 104 is provided with a bayonet and a sliding groove 105, the sliding groove is closed during sliding to reduce sliding resistance, the sliding groove is opened during cable lifting, and the sliding groove is closed after the cable passes through the bayonet to prevent the cable from falling off.
As shown in fig. 5, the cable hooking device 7 includes: mounting support 11 and hook-shaped structure 12, nozzle 13, actuating cylinder 14 and pipeline interface 15 that set up on it, wherein: the mounting support is arranged into a swing arm structure, so that the underwater operation depth of the hook-shaped structure is increased; the hook-shaped structure is hollow and communicated with the spraying and punching system through a pipeline interface, and the tail end of the structure is arranged into a hook shape or a semi-circular arc shape and can hook a cable upwards to play a role in fixing; a plurality of groups of nozzles are arranged outside the hook-shaped structure, and the nozzles are communicated with the internal high-pressure spraying water and can form spraying and ground breaking outwards; a sensor is arranged on the contact surface of the hook-shaped structure and the cable, and the position information of the cable relative to the hook-shaped device is obtained by utilizing the principles of force induction, electromagnetic induction and the like; the hook-shaped structure rotates within the range of 0-90 degrees by driving the oil cylinder to stretch and retract, and covers different working depths.
The cable hooking device has the functions of spraying, breaking soil, detecting cables and fixing cables, wherein: the cable hooking device can integrally go deep under the mud and move under the dragging of the underwater fishing platform; the contact surface is provided with a detection sensor which can detect and sense the position of the cable and transmit information to the underwater fishing platform control system; the tail end or the middle position can be provided with one or more groups of fixed or telescopic hook-shaped structures, the cable can be hooked to prevent the cable from sinking under the action of gravity when the spraying and flushing desilting is finished, the cable hooking device can be recovered after the cable lifting device catches the cable, and the hook-shaped structures are automatically separated from the cable.
As shown in fig. 6, the movable spraying mechanism 8 includes: a moving guide 16, an arm 17, a nozzle 18, a line connection 19 and a drive cylinder 20, wherein: the arm-shaped structure is a hollow structure and is communicated with the spraying and flushing system through a pipeline interface, and the plurality of groups of nozzles are arranged outside the arm-shaped structure and are communicated with high-pressure spraying and flushing water inside the arm-shaped structure, so that multidirectional and large-range spraying and ground breaking are outwards formed; the movable guide rail is arranged on the main frame of the underwater fishing platform, is connected with the arm-shaped structure and carries the arm-shaped structure to integrally reciprocate; the arm-shaped structure rotates within the range of 0-90 degrees by driving the oil cylinder to stretch and cover different working depths.
The movable spraying and flushing mechanism can move back and forth along the axial direction of the cable after rotating to a specified angle (depth) through the driving oil cylinder, and can carry out large-range desilting on the periphery of the cable through continuous spraying and flushing.
As shown in fig. 7 (a) - (e), the cable lifter 9 includes: lifting rail 21, gripper mechanism 22, cable sounding mechanism 23 and actuating cylinder 24, wherein: the lifting guide rail 21 drives a multi-stage telescopic structure which is driven by an oil cylinder 24 and can move up and down, and the tail end of the lifting guide rail 21 is connected with the paw mechanism 22; the cable sounding mechanism 23 is arranged below the gripper mechanism 22 and used for controlling the gripper mechanism 22 to stop closing after being triggered, so that over-gripping is prevented.
The gripper of the gripper mechanism 22 is of an involute structure which can be crossed, organic materials such as nylon are laid on the surface of the gripper, the friction resistance is reduced, the outer surface of a cable is not easy to damage, and the tail end of the gripper is connected with the base of the gripper mechanism 22 through a bearing and a slip ring.
The gripper mechanism 22 is in a completely opened state before being placed downwards, the gripper mechanism is folded in a crossed mode after being placed downwards until the cable is folded, the cable moves upwards along with the cross point during the crossed folding of the gripper to achieve position lifting, and the lifting mechanism lifts the cable until the mud surface is lifted.
As shown in fig. 8, the cable penetration mechanism 23 includes: a base plate 25, a base plate floating spring 26, a sensor support 27, a guide rod 28, a return spring 29 and a sensor 30, wherein: the bottom plate is movably connected with the paw mechanism 22 through a floating spring, and can move upwards and reset automatically after contacting with the cable; the sensor, the guide rod and the return spring are sequentially arranged on the sensor support, and the guide rod moves up and down along with the bottom plate under the action of the return spring and triggers the sensor; the sensor is connected with the underwater control system through a cable and transmits the sensing information to the water surface monitoring system in real time.
The sensor adopts an electromagnetic induction principle, a mechanical switch or other position induction sensors.
As shown in fig. 9, the spray system 10 includes: manifold 31 and associated jet pump 32, line 33 and switching valve 34, wherein: the outlet of the spraying and flushing pump is connected with the cable hooking device, the movable spraying and flushing mechanism and the cable lifting device through pipelines, and valves for controlling a water path, such as check valves and stop valves, are connected in series in the middle of the pipelines.
As shown in fig. 10 (a) - (i), the present embodiment relates to a method for fishing a deep submarine cable in the system, which comprises:
the first step is as follows: positioning the mother ship above the vicinity of the operation area, and lifting the underwater salvage platform into water;
the second step is that: planning a cable detecting and touching route, carrying out underwater maneuvering by using a thruster on an underwater salvaging platform, adjusting the longitudinal central line to be coincident with the detecting and touching route and sitting at the bottom;
the third step: starting a spraying and flushing system, lowering a cable hooking device to a 90-degree state, enabling an underwater fishing platform to navigate along a line close to the bottom, and detecting cables by using induction sensors of the cable hooking device until the two cable hooking devices detect the cables completely;
the fourth step: lowering the movable spraying and flushing mechanism, starting reciprocating spraying and flushing, and cleaning sludge above the cable and outside two sides;
the fifth step: gradually lowering the cable lifter to a specified depth, closing the claws, confirming that the claws of the two sets of cable lifters completely grab the cable, and stopping closing the claws;
and a sixth step: the movable spraying and punching mechanism is recovered to an initial position, and the guide rail driving oil cylinder is retracted step by step and synchronously under the grasping state of a cable lifter claw, so that the cable is lifted out of the trench bottom;
the seventh step: after the guide rails of the cable lifting device are completely returned, the two sets of claws continue to fold in a staggered mode at the same time until the position of the cable is sensed by the feeler devices at the tops of the claws and the claws are in a completely folded state, and the cable is excavated and enters a clamping position at the moment.
Eighth step: a floating ball or a buoy is bound on the cable at the mud discharging section to keep the cable in a floating state in water;
the ninth step: the gripper of the cable lifter is fully opened and releases the mud section cable, and the underwater fishing platform is moved to the next excavation point and then the steps are repeated;
the tenth step: and (4) grasping the middle part of the excavated cable by using a cable lifting device, and carrying the cable to float upwards integrally by using the underwater fishing platform and recovering to a deck.
Through practical platform experiments, under the environment that the water depth exceeds 100 meters, the unmanned submersible platform carrying tool is adopted to carry out underwater cable salvage operation, the underwater ground breaking depth can reach 4 meters, the ground breaking excavation amount is reduced by at least 60-70%, and the operation efficiency and the underwater environment protection are obviously higher than those of a conventional operation method of full excavation.
Compared with the prior art, the ROV submersible platform technology is adopted to integrate the cable detection, the jetting and the ground breaking, the grabbing and the fishing operation into a whole, the specially designed cable hooking device adopts the contact sensor to directly and accurately sense the depth and the position information of the cable, and the special jetting and ground breaking system and the cable lifting device are combined to deeply dig into the mud and lock the cable to be fished, so that the operation integration degree and the fishing accuracy are high, the environmental damage is small, and the cable is more favorably protected from being damaged.
The foregoing embodiments may be modified in many different ways by those skilled in the art without departing from the spirit and scope of the invention, which is defined by the appended claims and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (9)
1. The utility model provides a submarine deep buried cable fishing system which characterized in that includes: the surface of water control power station and the underwater salvage platform who links to each other through the umbilical cable with it, wherein: the water surface monitoring power station provides strong electric power and monitoring information transmission for the underwater salvage platform through an umbilical cable; the water surface monitoring power station realizes the probing, positioning, spraying, dredging, grabbing and lifting of the submarine deeply buried cable through the operation of remotely controlling the underwater fishing platform until the deeply buried cable is safely fished to a mud surface or a water surface for subsequent treatment;
the surface of water control power station include: power system, control system, set up power supply unit and control unit in the container, wherein: the power supply unit is connected with the power system through a power channel in the umbilical cable to provide strong electric power for underwater system operation; the monitoring and operating unit is connected with the control system through a communication channel in the umbilical cable, and receives sensor data and a transmission control command of the control system;
the underwater fishing platform comprises: the main frame and set up buoyancy material, propeller, hydraulic system, electric control system, pressure compensation system, hook cable ware, portable spouting towards mechanism, carry the cable ware, spout towards the system above that, wherein: the underwater hydraulic system is respectively connected with the propeller, the cable hooking device, the movable spraying and flushing mechanism and the cable lifting device through oil pipes to provide hydraulic power and control; the underwater electric control system is respectively connected with the water surface monitoring power station, the underwater hydraulic system and the underwater sensors through cables, acquires data of each underwater sensor, transmits the data to the water surface through an umbilical cable, and receives a water surface control instruction to realize motion control of the underwater salvaging platform and operation control of each salvaging tool; the pressure compensation system is respectively connected with the underwater electric control system and the underwater hydraulic system and provides pressure compensation to keep the balance of internal pressure and external pressure.
2. The system for salvaging a submarine deep buried cable according to claim 1, wherein the main frame comprises: top layer structure, middle level structure, hoisting point and the smooth stick up in bottom, wherein: the lifting point is arranged on the top layer structure, the middle layer structure is provided with tools, mechanisms and various subsystem components, the bottom slide warp is connected with the middle layer structure through a mechanical mounting interface, and the bottom slide warp is in contact with the seabed during operation to play a role in reducing sliding resistance and reducing specific grounding pressure.
3. The system as claimed in claim 1, wherein the cable hooking device comprises: erection support and set up hook-shaped structure, nozzle, actuating cylinder and pipeline interface on it, wherein: the mounting support is arranged into a swing arm structure, so that the underwater operation depth of a hook-shaped structure is increased; the hook-shaped structure is hollow and communicated with the spraying and flushing system through a pipeline interface, and the tail end of the structure is arranged into a hook shape or a semi-circular arc shape and can hook a cable upwards to play a role in fixing; a plurality of groups of nozzles are arranged outside the hook-shaped structure, and the nozzles are communicated with the internal high-pressure spraying water and can form spraying and ground breaking outwards; a sensor is arranged on the contact surface of the hook-shaped structure and the cable, and the position information of the cable relative to the hook-shaped device is obtained by utilizing the principles of force induction, electromagnetic induction and the like; the hook-shaped structure rotates within a-degree range by driving the oil cylinder to stretch and retract, and covers different working depths;
the hook cable ware have concurrently and spout broken ground, cable detection and cable fixing function, wherein: the cable hooking device can integrally go deep under the mud and move under the dragging of the underwater fishing platform; the contact surface is provided with a detection sensor which can detect and sense the position of the cable and transmit information to the underwater salvage platform control system; one or more groups of fixed or telescopic hook-shaped structures can be arranged at the tail end or the middle position, the cable can be hooked to prevent the cable from sinking under the action of gravity when the spraying and flushing desilting are carried out, the cable hooking device can be recovered after the spraying and flushing desilting is finished and the cable lifting device catches the cable, and the hook-shaped structures are automatically separated from the cable.
4. The system for salvaging a submarine deep buried cable according to claim 1, wherein the movable jetting mechanism comprises: remove guide rail, arm column structure, nozzle, pipeline interface and actuating cylinder, wherein: the arm-shaped structure is a hollow structure and is communicated with the spraying and flushing system through a pipeline interface, and the plurality of groups of nozzles are arranged outside the arm-shaped structure and are communicated with high-pressure spraying and flushing water inside the arm-shaped structure, so that multidirectional and large-range spraying and ground breaking are outwards formed; the movable guide rail is arranged on the main frame of the underwater fishing platform, is connected with the arm-shaped structure and carries the arm-shaped structure to integrally reciprocate; the arm-shaped structure rotates within a-degree range by driving the oil cylinder to stretch and cover different working depths;
the movable spraying and flushing mechanism can move back and forth along the axial direction of the cable after rotating to a specified angle or depth through the driving oil cylinder, and can carry out large-range desilting on the periphery of the cable through continuous spraying and flushing.
5. The system as claimed in claim 1, wherein the cable lifter comprises: promote guide rail, hand claw mechanism, cable sounding mechanism and actuating cylinder, wherein: the lifting guide rail drives a multi-stage telescopic structure driven by an oil cylinder and capable of moving up and down, and the tail end of the lifting guide rail is connected with the paw mechanism; the cable sounding mechanism is arranged below the paw mechanism and used for controlling the paw mechanism to stop folding after being triggered, so that over-grabbing is prevented.
6. The submarine deep-buried cable fishing system according to claim 5, wherein the claws of the claw mechanism are of a crossed involute structure, organic materials such as nylon are laid on the surface of the claws, the friction resistance is reduced, the outer surface of the cable is not easy to damage, and the tail ends of the claws are connected with the base of the claw mechanism through bearings and sliding rings;
the gripper mechanism is in a fully-opened state before being placed downwards, the gripper mechanism is folded in a crossed mode after being placed downwards until the cable is folded, the cable moves upwards along with the cross point during the crossed folding of the gripper to achieve position lifting, and the lifting mechanism lifts the cable until the mud surface is lifted.
7. The system for salvaging a submarine deep buried cable according to claim 5, wherein the cable sounding mechanism comprises: bottom plate, bottom plate floating spring, sensor support, guide arm, reset spring and sensor, wherein: the bottom plate is movably connected with the paw mechanism through a floating spring, and can move upwards and reset automatically after being contacted with the cable; the sensor, the guide rod and the return spring are sequentially arranged on the sensor support, and the guide rod moves up and down along with the bottom plate under the action of the return spring and triggers the sensor; the sensor is connected with the underwater control system through a cable, and transmits the sensing information to the water surface monitoring system in real time.
8. The system for fishing the submarine deep buried cable according to claim 1, 3 or 4, wherein the jetting system comprises: manifold and the jet pump, pipeline and the diverter valve that link to each other with it, wherein: the outlet of the spraying and flushing pump is connected with the cable hooking device, the movable spraying and flushing mechanism and the cable lifting device through pipelines, and valves for controlling a water path, such as a check valve and a stop valve, are connected in series in the middle of the pipelines.
9. A method for fishing a deep submarine cable based on the system of any one of claims 1 to 8, comprising:
the first step is as follows: positioning the mother ship above the vicinity of the operation area, and lifting the underwater salvage platform into water;
the second step is that: planning a cable detecting and touching route, carrying out underwater maneuvering by using a thruster on an underwater salvaging platform, adjusting the longitudinal central line to be coincident with the detecting and touching route and sitting at the bottom;
the third step: starting a spraying and flushing system, lowering a cable hooking device to a proper state, enabling an underwater salvaging platform to sail along a line close to the bottom, and detecting cables by using induction sensors of the cable hooking device until the two cable hooking devices detect the cables completely;
the fourth step: lowering the movable spraying and flushing mechanism to start reciprocating spraying and flushing, and cleaning sludge above the cable and outside two sides of the cable;
the fifth step: gradually lowering the cable lifter to a specified depth, closing the claws, confirming that the claws of the two sets of cable lifters completely grab the cable, and stopping closing the claws;
and a sixth step: the movable spraying and flushing mechanism is recovered to an initial position, and the guide rail driving oil cylinder is retracted step by step and synchronously under the gripping state of the cable lifter claw, so that the cable is lifted out of the bottom of the trench;
the seventh step: after the guide rails of the cable lifter return completely, the two sets of claws continue to fold in a staggered manner at the same time until the feeler inspection devices at the tops of the claws sense the position of the cable and the claws are in a completely folded state, and the cable is excavated and enters a clamping position;
eighth step: a floating ball or a buoy is bound on the cable at the mud discharging section to keep the cable in a floating state in water;
the ninth step: the gripper of the cable lifter is fully opened and releases the mud section cable, and the underwater salvage platform moves to the next excavation point and repeats the steps;
the tenth step: and (4) grasping the middle part of the excavated cable by using a cable lifting device, and carrying the cable to float upwards integrally by using the underwater fishing platform and recovering to a deck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211204186.3A CN115649387A (en) | 2022-09-29 | 2022-09-29 | Seabed deep-buried cable fishing system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211204186.3A CN115649387A (en) | 2022-09-29 | 2022-09-29 | Seabed deep-buried cable fishing system and method |
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| Publication Number | Publication Date |
|---|---|
| CN115649387A true CN115649387A (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211204186.3A Pending CN115649387A (en) | 2022-09-29 | 2022-09-29 | Seabed deep-buried cable fishing system and method |
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| Country | Link |
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| CN (1) | CN115649387A (en) |
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- 2022-09-29 CN CN202211204186.3A patent/CN115649387A/en active Pending
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