CN110716273A - Offshore laying and recycling method and system for underwater docking station - Google Patents
Offshore laying and recycling method and system for underwater docking station Download PDFInfo
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- CN110716273A CN110716273A CN201910939236.4A CN201910939236A CN110716273A CN 110716273 A CN110716273 A CN 110716273A CN 201910939236 A CN201910939236 A CN 201910939236A CN 110716273 A CN110716273 A CN 110716273A
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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
- G02B6/506—Underwater installation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/52—Tools specially adapted for working underwater, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention discloses a method and a system for laying and recovering an underwater docking station on sea, belonging to the technical field of submarine optical cable communication system engineering, wherein the method for laying the underwater docking station on the sea comprises the following steps of selecting a docking station laying sea area meeting preset conditions; throwing down a mushroom anchor connected with one end of a steel cable, driving the cable laying ship in the cable laying direction, and releasing the steel cable into water; after the steel cable is released to a preset length, connecting the other end of the steel cable with one end of a connection station, connecting the other end of the connection station with a submarine cable, and laying the connection station to enable the connection station to reach the seabed; the method for recovering the underwater connection station at sea comprises the following steps of positioning the position of a fault connection station, and positioning the position and the direction of the fault connection station corresponding to a submarine cable; after the cable laying ship sails along the direction of the sea cable for a preset distance, pulling up the mushroom anchor at the tail end of the steel cable; the docking station is recovered by pulling up the wire rope. The high-efficiency arrangement and recovery of the docking station are realized.
Description
Technical Field
The invention relates to the technical field of submarine optical cable communication system engineering, in particular to a method and a system for laying and recovering an underwater docking station on the sea.
Background
With the continuous development of information technology, an autonomous underwater unmanned vehicle (AUV) is used as one of powerful tools for exploring ocean space, and plays an increasingly important role in the aspects of military and scientific research; the underwater docking station plays a crucial role in the aspects of endurance, emergency, cluster operation, operation cost and the like of the AUV in the future. The submarine observation network is a particularly prominent means for marine observation, can transmit high-voltage electric energy and high-speed network communication signals to the seabed through special submarine cables to support various sensors and equipment to operate on the seabed for a long time, and transmits detection data back to a base station on shore in real time, and is one of the most suitable platforms for detection in various aspects of our earth home.
The AUV underwater docking station is used as a medium, the AUV and a seabed observation network can be well combined to form a three-dimensional marine environment monitoring system, and the marine environment is monitored in an all-around manner. The quality of the docking station layout and subsequent maintenance work are key factors in ensuring the reliability of these observation systems. The length of AUV in many deep seas reaches more than 6 meters, and its corresponding connection station is bulky, and how to utilize existing equipment and machines, it becomes especially important to put the correct cloth of connection station to the seabed through the promotion on the construction method. The common arrangement mode of the docking station is mainly to hoist the docking station to the seabed through a cable, the arrangement depth of the docking station is limited by the length of the cable, and due to the influence of ocean current, the cable is easy to twist in the hoisting process to influence the arrangement of the docking station.
Disclosure of Invention
The invention aims to overcome at least one problem and provides a method and a system for offshore deployment and recovery of an underwater docking station.
In one aspect, the invention provides a method for laying and recovering an underwater docking station on sea, which comprises the following steps,
step S11, selecting a docking station meeting preset conditions to lay the sea area;
step S12, throwing down a mushroom anchor connected with one end of the steel cable, driving the cable laying ship in the direction of cable laying, and releasing the steel cable to launch;
step S13, after the steel cable is released to a preset length, connecting the other end of the steel cable with one end of the connection station, connecting the other end of the connection station with the submarine cable, and laying the connection station to enable the connection station to reach the seabed;
the offshore recovery method of the underwater docking station comprises the following steps,
step S21, positioning the position of a fault connection station, and positioning the position and the direction of the fault connection station corresponding to the submarine cable;
step S22, after the cable laying ship sails along the direction of the sea cable for a preset distance, pulling up the mushroom anchor at the tail end of the steel cable;
step S23, the docking station is recovered by pulling up the wire rope.
Further, the method further comprises testing the docking station before dropping the mushroom anchor to confirm that the docking station is working properly.
Further, the offshore deployment method of the underwater docking station further comprises the following steps,
and step S14, testing the docking station again after the docking station arrives at the seabed to confirm that the docking station can work normally, detecting whether the attitude of the docking station is correct or not, if not, recovering the submarine cable, correcting the attitude of the docking station by utilizing the self-attitude adjusting capability of the docking station, and enabling the docking station to arrive at the seabed again.
Further, the offshore deployment method of the underwater docking station further comprises the following steps,
and step S15, sending an activation signal to the underwater sound control releaser, and releasing the buoyancy block on the docking station after the underwater sound control releaser receives the activation signal, thereby recovering the buoyancy block.
On the other hand, the invention also provides an offshore laying and recovery system for the underwater docking station, which comprises a depth sounder, a mushroom anchor throwing device, docking station connecting equipment, a docking station laying device, a fault docking station positioning device, a submarine cable detection device and a cable fishing machine;
the depth sounder is used for selecting a docking station meeting preset conditions to be deployed in a sea area;
the mushroom anchor throwing device is used for throwing a mushroom anchor connected with one end of a steel cable, the cable laying ship runs towards the cable laying direction, and the steel cable is released to launch;
the connection station connecting equipment is used for connecting the other end of the steel cable with one end of the connection station and connecting the other end of the connection station with the submarine cable; the docking station laying device is used for laying the docking station to enable the docking station to reach the seabed;
the device comprises a fault connection station positioning device, a submarine cable detection device and a submarine cable detection device, wherein the fault connection station positioning device is used for positioning the position of a fault connection station, and the submarine cable detection device is used for positioning the position and the direction of a submarine cable corresponding to the fault connection station;
the cable fishing machine is used for pulling up the mushroom anchor and the steel cable after the cable distribution ship sails along the direction of the sea cable for a preset distance, thereby recovering the connection station.
Further, the offshore deployment and recovery system for the underwater docking station further comprises a docking station testing device, wherein the docking station testing device is used for testing the docking station before the mushroom anchor is thrown down and after the docking station reaches the seabed, so as to confirm that the docking station can work normally.
Further, the offshore deployment and recovery system of the underwater docking station further comprises a releaser deck unit, an underwater acoustic control releaser and a buoyancy block,
the underwater acoustic control releaser is communicated with the releaser deck unit and is used for detecting whether the attitude of the docking station is correct or not, if not, the docking station laying device acquires an incorrect attitude signal sent by the underwater acoustic control releaser through the releaser deck unit, then recovers the submarine cable, utilizes the self attitude adjustment capability of the docking station to enable the attitude of the docking station to be correct, and enables the docking station to reach the seabed again;
the buoyancy block is used for keeping the docking station in a correct posture in the process of laying the docking station;
the releaser deck unit is also used for sending an activation signal to the underwater sound control releaser, and the underwater sound control releaser releases the buoyancy block on the docking station after receiving the activation signal.
The beneficial effects of the invention include: when the docking station is deployed, a sea area is deployed by selecting the docking station meeting preset conditions, a mushroom anchor connected with one end of a steel cable is thrown down, the steel cable is released to launch, after the steel cable is released to a preset length, the other end of the steel cable is connected with one end of the docking station, the other end of the docking station is connected with a submarine cable, and the docking station is deployed to reach the seabed, so that the deployment depth of the docking station is prevented from being limited by the length of a cable, the influence of ocean current on the docking station is reduced, and the high-efficiency deployment of the docking station is realized;
when the connecting station is recovered, the position of the fault connecting station is positioned, the position and the direction of the fault connecting station corresponding to the submarine cable are positioned, after a cable distribution ship sails in the direction of the submarine cable for a preset distance, the mushroom anchor at the tail end of the steel cable is pulled, and the connecting station is recovered by pulling up the steel cable; the high-efficiency recovery of the docking station is realized;
drawings
FIG. 1 is a schematic flow chart of an offshore deployment method of a underwater docking station according to an embodiment of the invention;
FIG. 2 is a schematic flow chart of an offshore recovery method of a underwater docking station according to an embodiment of the invention;
FIG. 3 is a schematic view of a steel cable according to an embodiment of the present invention being released for launching;
FIG. 4 is a schematic view of a lay-up docking station according to an embodiment of the present invention;
figure 5 is a schematic view of a docking station according to an embodiment of the invention reaching the seabed;
FIG. 6 is a schematic view of pulling up the mushroom anchor at the end of a wire rope according to an embodiment of the present invention;
fig. 7 is a schematic view of a recycling docking station according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The embodiment of the invention provides a method for laying and recovering an underwater docking station on sea, which is shown in a schematic flow chart in figure 1 and comprises the following steps,
step S11, selecting a docking station meeting preset conditions to lay the sea area;
specifically, a bathymetric sounder is used for measuring the water depth of the distributed sea area, whether the seabed in the sea area meets preset conditions or not is judged, and if not, the distributed sea area is reselected; the preset condition of the seabed in the sea area is that the average water depth around the distribution point is 1200-1800 meters, preferably 1500 meters, and the range is two times of the water depth, namely 2400-3600 meters, preferably 3000 meters.
Step S12, throwing down a mushroom anchor connected with one end of the steel cable, driving the cable laying ship in the direction of cable laying, and releasing the steel cable to launch; the steel cord is released to the water as shown in figure 3.
Specifically, the mushroom anchor is thrown down, the cable laying ship runs towards the cable laying direction, the length of a steel cable connected with the mushroom anchor is about twice of the laying depth of a docking station, the steel cable is released into water through a pulley on an A-shaped hanger, the water entering angle of the steel cable is adjusted to be about 10-30 degrees by utilizing the running speed of the cable laying ship and a drum cable laying machine, the acting force of sea waves on the steel cable is fully considered, the steel cable is prevented from bearing too large tension, therefore, proper weather conditions are required to be selected during laying, and the continuous 48 hours are generally within 3-level sea conditions;
step S13, after the steel cable is released to a preset length, connecting the other end of the steel cable with one end of the connection station, connecting the other end of the connection station with the submarine cable, and laying the connection station to enable the connection station to reach the seabed;
a schematic view of the deployment of a docking station, as shown in figure 4, a schematic view of the arrival of a docking station at the seabed, as shown in figure 5;
the preset length can be 40-60 meters, preferably 50 meters, of the steel cable;
in specific implementation, when the steel cable is released to the last 50 meters, the cable laying ship stops, the steel cable is stopped to be released, the steel cable with the length of 50 meters is fixed on an A-shaped hanging bracket by using a steel wire net sleeve, the steel cable is taken down from a pulley and connected to a connection station, the other end of the connection station is connected with the submarine cable, the connection station is hoisted by the A-shaped hanging bracket, and the steel wire net sleeve is released;
when the connection station is laid, the water inlet speed of the connection station is controlled through the A-shaped hanging bracket, the connection station slowly enters water, and after the connection station completely enters water, the lifting hook is loosened to allow the connection station to freely settle; in the laying process, the cable laying speed is controlled by a drum cable laying machine and a linear cable laying machine, and meanwhile, a cable laying ship slowly sails towards the cable laying direction;
the offshore recovery method of the underwater docking station comprises the following steps,
step S21, positioning the position of a fault connection station, and positioning the position and the direction of the fault connection station corresponding to the submarine cable;
step S22, after the cable laying ship sails along the direction of the sea cable for a preset distance, pulling up the mushroom anchor at the tail end of the steel cable;
step S23, the docking station is recovered by pulling up the wire rope.
A schematic drawing of the mushroom anchor at the end of the wire rope pulled up, as shown in figure 6, and a schematic drawing of the recovery docking station, as shown in figure 7.
Preferably, the method further comprises testing the docking station to confirm that the docking station is working properly before the mushroom anchor is thrown.
Preferably, the offshore deployment method of the underwater docking station further comprises the following steps,
and step S14, testing the docking station again after the docking station arrives at the seabed to confirm that the docking station can work normally, detecting whether the attitude of the docking station is correct or not, if not, recovering the submarine cable, correcting the attitude of the docking station by utilizing the self-attitude adjusting capability of the docking station, and enabling the docking station to arrive at the seabed again.
In specific implementation, after the docking station reaches the seabed, stopping the ship to retest the docking station, ensuring that no damage is caused to the branch devices or the related submarine cables in the laying process, and whether the attitude of the docking station is correct or not, if the attitude of the docking station is incorrect, recovering the submarine cables by a cable laying machine, pulling the docking station up by a certain distance from the seabed, recovering the attitude by utilizing the self-attitude adjusting capability of the docking station, and then enabling the docking station to reach the seabed;
preferably, the offshore deployment method of the underwater docking station further comprises the following steps,
and step S15, sending an activation signal to the underwater sound control releaser, and releasing the buoyancy block on the docking station after the underwater sound control releaser receives the activation signal, thereby recovering the buoyancy block.
It should be noted that the buoyancy block is used for keeping the docking station in a correct posture in the docking station laying process, the underwater acoustic control releaser is connected with the buoyancy block and sends an activation signal to the underwater acoustic control releaser, the underwater acoustic control releaser releases the buoyancy block on the docking station after receiving the activation signal, whether the underwater acoustic control releaser is unhooked from the docking station is determined through a video monitoring function on the docking station, if not, a re-excitation signal is sent, the buoyancy block is recovered after unhooking, and then the submarine cable laying can be started
Example 2
The embodiment provides an offshore laying and recovery system for an underwater docking station, which comprises a depth sounder, a mushroom anchor throwing device, docking station connecting equipment, a docking station laying device, a fault docking station positioning device, a submarine cable detection device and a cable fishing machine hook, wherein the mushroom anchor throwing device is arranged on the underwater docking station;
the depth sounder is used for selecting a docking station meeting preset conditions to be deployed in a sea area;
the mushroom anchor throwing device is used for throwing a mushroom anchor connected with one end of a steel cable, the cable laying ship runs towards the cable laying direction, and the steel cable is released to launch;
the connection station connecting equipment is used for connecting the other end of the steel cable with one end of the connection station and connecting the other end of the connection station with the submarine cable; the docking station laying device is used for laying the docking station to enable the docking station to reach the seabed;
the device comprises a fault connection station positioning device, a submarine cable detection device and a submarine cable detection device, wherein the fault connection station positioning device is used for positioning the position of a fault connection station, and the submarine cable detection device is used for positioning the position and the direction of a submarine cable corresponding to the fault connection station;
the cable fishing machine is used for pulling up the mushroom anchor and the steel cable after the cable distribution ship sails along the direction of the sea cable for a preset distance, thereby recovering the connection station.
It should be noted that the positioning device of the fault docking station may be an electrical or optical positioning device; after the position of the fault connection station is positioned, the cable distribution ship is opened to the fault position, and the position and the direction of the submarine cable are positioned through the submarine cable detection device; the cable laying ship continues to sail along the direction of the sea cable until the ship stops at a certain distance from the fault connection station;
the schematic drawing that the mushroom anchor and the steel cable are pulled up by the cable fishing machine is shown in fig. 6, the cable fishing machine is a clamping type cable fishing machine, the steel cable is hooked by the clamping type cable fishing machine, when the clamping type cable fishing machine is hooked to the steel cable, the pulling force on the pulling rope of the cable fishing machine can send a signal, the cable laying ship slowly moves towards the direction of the docking station, the cable fishing machine is slowly pulled up, the water inlet angle of the rope of the cable fishing machine is kept at 0-10 degrees, and at the moment, the mushroom anchor at the tail end of the steel cable is slowly pulled up; the connecting station is pulled up through the recovery steel cable, and the cable fishing boat continues to run until the connecting station is recovered and then stops;
after the docking station is on board, the connectors and equipment at each location of the docking station are inspected to determine if water has entered, the submarine cable is disconnected to seal the end of the submarine cable, and the submarine cable is placed on the sea floor with a rope and attached to a buoy.
Preferably, the system further comprises a docking station testing device, wherein the docking station testing device is used for testing the docking station before the mushroom anchor is thrown down and after the docking station reaches the seabed, so as to confirm that the docking station can work normally.
Preferably, the system also comprises a releaser deck unit, an underwater sound control releaser and a buoyancy block,
the underwater acoustic control releaser is communicated with the releaser deck unit and is used for detecting whether the attitude of the docking station is correct or not, if not, the docking station laying device acquires an incorrect attitude signal sent by the underwater acoustic control releaser through the releaser deck unit, then recovers the submarine cable, utilizes the self attitude adjustment capability of the docking station to enable the attitude of the docking station to be correct, and enables the docking station to reach the seabed again;
the underwater acoustic control releaser can be an R12K deep sea acoustic response releaser, and the releaser deck unit can be a UTS-9400 universal deck unit;
the buoyancy block is used for keeping the correct posture of the docking station; the releaser deck unit is also used for sending an activation signal to the underwater sound control releaser, and the underwater sound control releaser releases the buoyancy block on the docking station after receiving the activation signal.
The invention discloses a method and a system for laying and recovering an underwater docking station on sea, wherein when the docking station is laid, a docking station meeting preset conditions is selected to lay a sea area, a mushroom anchor connected with one end of a steel cable is thrown down, the steel cable is released to launch, after the steel cable is released to a preset length, the other end of the steel cable is connected with one end of the docking station, the other end of the docking station is connected with a sea cable, and the docking station is laid to reach the sea bed, so that the laying depth of the docking station is not limited by the length of the cable, the influence of ocean current on the docking station is reduced, and the high-efficiency laying of the docking station is realized;
when the connecting station is recovered, the position of the fault connecting station is positioned, the position and the direction of the fault connecting station corresponding to the submarine cable are positioned, after a cable distribution ship sails in the direction of the submarine cable for a preset distance, the mushroom anchor at the tail end of the steel cable is pulled, and the connecting station is recovered by pulling up the steel cable; the efficient recovery of the docking station is realized;
in addition, the docking station has the advantages that the docking station is suitable in laying mode due to the structural characteristics, later-stage recovery and maintenance are facilitated, the docking station is safely laid at sea by means of coordinated construction steps through various preparations and configurations in the whole laying and recovery process, efficiency is high, recovery and maintenance are convenient, all offshore laying and recovery work can be completed by only one cable laying ship for laying and recovery, and construction is economical.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (7)
1. A method for laying and recovering an underwater docking station on sea is characterized by comprising the following steps,
step S11, selecting a docking station meeting preset conditions to lay the sea area;
step S12, throwing down a mushroom anchor connected with one end of the steel cable, driving the cable laying ship in the direction of cable laying, and releasing the steel cable to launch;
step S13, after the steel cable is released to a preset length, connecting the other end of the steel cable with one end of the connection station, connecting the other end of the connection station with the submarine cable, and laying the connection station to enable the connection station to reach the seabed;
the offshore recovery method of the underwater docking station comprises the following steps,
step S21, positioning the position of a fault connection station, and positioning the position and the direction of the fault connection station corresponding to the submarine cable;
step S22, after the cable laying ship sails along the direction of the sea cable for a preset distance, pulling up the mushroom anchor at the tail end of the steel cable;
step S23, the docking station is recovered by pulling up the wire rope.
2. The method for offshore deployment and retrieval of an underwater docking station as recited in claim 1, further comprising testing the docking station to confirm that the docking station is functioning properly prior to dropping the mushroom anchor.
3. The subsea docking station offshore deployment and retrieval method of claim 2, further comprising the steps of,
and step S14, testing the docking station again after the docking station arrives at the seabed to confirm that the docking station can work normally, detecting whether the attitude of the docking station is correct or not, if not, recovering the submarine cable, correcting the attitude of the docking station by utilizing the self-attitude adjusting capability of the docking station, and enabling the docking station to arrive at the seabed again.
4. The subsea docking station offshore deployment and retrieval method of claim 3, further comprising the steps of,
and step S15, sending an activation signal to the underwater sound control releaser, and releasing the buoyancy block on the docking station after the underwater sound control releaser receives the activation signal, thereby recovering the buoyancy block.
5. A marine laying and recovery system for an underwater docking station is characterized by comprising a depth sounder, a mushroom anchor throwing device, docking station connecting equipment, a docking station laying device, a fault docking station positioning device, a submarine cable detection device and a cable fishing machine;
the depth sounder is used for selecting a docking station meeting preset conditions to be deployed in a sea area;
the mushroom anchor throwing device is used for throwing a mushroom anchor connected with one end of a steel cable, the cable laying ship runs towards the cable laying direction, and the steel cable is released to launch;
the connection station connecting equipment is used for connecting the other end of the steel cable with one end of the connection station and connecting the other end of the connection station with the submarine cable; the docking station laying device is used for laying the docking station to enable the docking station to reach the seabed;
the device comprises a fault connection station positioning device, a submarine cable detection device and a submarine cable detection device, wherein the fault connection station positioning device is used for positioning the position of a fault connection station, and the submarine cable detection device is used for positioning the position and the direction of a submarine cable corresponding to the fault connection station;
the cable fishing machine is used for pulling up the mushroom anchor and the steel cable after the cable distribution ship sails along the direction of the sea cable for a preset distance, thereby recovering the connection station.
6. The offshore docking station deployment and retrieval system of claim 5, further comprising a docking station testing device for testing the docking station before the mushroom anchor is thrown and after the docking station reaches the seabed to confirm that the docking station is working properly.
7. The offshore docking station deployment and retrieval system of claim 5, further comprising a releaser deck unit, an underwater acoustic controlled releaser and a buoyancy block,
the underwater acoustic control releaser is communicated with the releaser deck unit and is used for detecting whether the attitude of the docking station is correct or not, if not, the docking station laying device acquires an incorrect attitude signal sent by the underwater acoustic control releaser through the releaser deck unit, then recovers the submarine cable, utilizes the self attitude adjustment capability of the docking station to enable the attitude of the docking station to be correct, and enables the docking station to reach the seabed again;
the buoyancy block is used for keeping the docking station in a correct posture in the process of laying the docking station;
the releaser deck unit is also used for sending an activation signal to the underwater sound control releaser, and the underwater sound control releaser releases the buoyancy block on the docking station after receiving the activation signal.
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| CN201910939236.4A CN110716273A (en) | 2019-09-30 | 2019-09-30 | Offshore laying and recycling method and system for underwater docking station |
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