WO2015032157A1

WO2015032157A1 - Integrated submarine cable lifting and cutting system and method

Info

Publication number: WO2015032157A1
Application number: PCT/CN2013/090048
Authority: WO
Inventors: 周烨琦; 赵波; 叶巍
Original assignee: 中英海底系统有限公司
Priority date: 2013-09-06
Filing date: 2013-12-20
Publication date: 2015-03-12
Also published as: CN103490327A; CN103490327B

Abstract

An integrated submarine cable lifting and cutting system comprising an anchor body (1), a gripping blade (4), a cutting blade (8), a lifting boom (10), a fixing frame (11), an underwater release lock (12), a lifting ring (13), and a transitional lock component (14). Also provided is a method for employing the lifting and cutting system: when a cable is hooked by the lifting and cutting system, a display is generated by a force sensor aboard a vessel, when a certain value is reached, the underwater release lock is released by working personnel, the lifting boom on the lifting ring is pulled tight by a steel wire rope, the gripping blade and the cutting blade are driven by the lifting boom into rotation, a cable is gripped tightly by the gripping blade, the cable is cut by the cutting blade, and, the steel wire rope is tightened to bring the cable out of the sea floor. The system allows for cutting and lifting to be completed simultaneously with just a single release, thus conserving time for repairing a submarine cable, and enhancing efficiency.

Description

Integrated deep sea cable salvage cutting system and technical field

The present invention relates to a device capable of simultaneously cutting and gripping a deep sea cable and a deep sea cable cutting and salvage method using the same.

Background technique

Submarine communication cables are laid on the seabed to establish telecommunications transmissions between countries. Therefore, most of the submarine communication cables need to cross the ocean. For these submarine communication cables, they are often located underwater.

More than 5,000 meters.

Due to a series of factors such as fishing boat operations, submarine communication cables laid on the ocean floor are often prone to failure. It is necessary to dispatch a special cable work ship to the point of failure to salvage the section of the submarine communication cable that has failed. , its general operating procedures are:

In the first step, the cable working vessel travels to the side above the fault point of the submarine communication cable, releases the cable cutting shop, and cuts the submarine communication cable at a position close to the fault point on the submarine communication cable;

In the second step, the cable working vessel stops the ship after two times the depth of the water in the direction of the first cutting point, releases the cable fishing anchor, and salvage the end of the submarine communication cable caught by the cable fishing anchor, and then tests it. After the test, after the test The submarine communication cable is hung on the pontoon;

In the third step, after the pontoon with the submarine communication cable is thrown on the sea surface, the cable working vessel travels at a distance of twice the depth from the other side of the first cutting point, releasing the cable fishing anchor, and catching the submarine communication cable. The salvage submarine communication cable is salvaged on the ship, and after the fault is removed, the submarine communication cable after the fault is removed is connected with the spare optical cable on the ship, and then the optical cable is discharged in the direction of releasing the buoy in the second step; After the cable is released to the pontoon, the pontoon is picked up and docked with the submarine communication cable hanging on the pontoon and laid on the seabed to complete the repair.

Through the above steps, it is not difficult to find that on the side above the fault point of the submarine communication cable, the cable work ship needs to complete a cutting operation first, and then complete a fishing operation. Since the submarine communication cable is at least 5,000 meters below sea level, the release is found. At the point, it takes at least 12 hours to release a cable cutting shop or cable fishing anchor. After completing the first step and the second step, it takes at least 24 hours in the most smooth situation. However, due to the complicated environment of the ocean, there is no guarantee that the submarine communication cable can be accurately cut or caught once released. This will take longer to spend. Summary of the invention

It is an object of the present invention to provide a system that can greatly reduce the repair time of deep sea cables. Another object of the present invention is to provide a method for greatly reducing the repair time of deep sea cables.

In order to achieve the above object, a technical solution of the present invention provides an integrated deep sea cable fishing and cutting system, including an anchor body, wherein: the anchor body is formed by at least two fixed holding plates and two fixed cutting plates. Each of the fixed holding plate and the fixed cutting plate is provided with an upward sliding cable slot, and each fixed holding plate is further provided with a tilting downward fixing slot, and the opening of the fixing slot is connected with the cable sliding slot. a holding knife mounting gap is formed between two adjacent fixed holding plates, a cutting knife mounting gap is formed between the adjacent two fixed cutting plates, and a holding knife is disposed in the holding knife mounting gap, a cutting knife having a cutting edge is arranged in the installation gap of the cutting blade, and the holding knife and the cutting knife are both hinged with the anchor body;

The holding knife is provided with an opening upwardly holding groove, and the shape of the holding groove cooperates with the cable sliding groove and the fixing card slot on the fixed holding plate, so that the cable can smoothly fall into the holding groove and when the holding knife is held After the hinge point is rotated into position, the cable is held by the holding slot to fix the card slot; the cutting edge of the cutting blade is located on the side of the cable sliding slot of the fixed cutting plate, and the cutting edge will be rotated when the cutting blade rotates into position around the hinge point The cable that falls in the cable sliding slot is cut;

The utility model further comprises a boom and a fixing frame fixed on the top of the anchor body, the clamping hook of the wireless remote control underwater release type lock is stuck on the fixing frame, and the underwater release type lock is controlled by the remote control signal to unhook the clamping hook. The lifting ring is fixedly connected with the underwater release type lock, and the cable connecting the lifting ring used by the cable working ship to release the anchor body; the end of the hanging rod passes through the anchor body and is hinged with the holding knife and the cutting knife, thereby moving the lifting rod upward At the same time, the holding knife and the cutting knife are rotated around the hinge point between the anchor and the anchor body, and the other end of the boom is exposed outside the anchor body. When the clamping hook of the underwater release type lock is stuck on the fixing frame, The underwater release type lock protects the boom from the end of the anchor body so that the boom cannot move upward; one end of the transition lock assembly is connected to the end of the boom exposed to the outside of the anchor body, and the other end is connected to the hoist ring.

Preferably, the cable sliding groove, the holding groove and the fixing card slot comprise a straight segment groove body and a semicircular segment groove bottom, a groove width of the straight segment groove body and a diameter of the semicircular groove bottom and a diameter of the cable. In cooperation, after the gripping knife rotates into position with the hinge point between the gripping knife and the anchor body, the cable is caught between the bottom of the arc segment of the holding groove and the bottom of the arc segment of the fixed card slot.

Preferably, a protrusion is formed along a groove wall on a groove wall of one side of the holding groove, and when the holding blade rotates, the cable in the holding groove is pressed by the protrusion, so that the cable Yield deformation. Preferably, the gripping knife comprises a gripping shank made of a material having a high yield strength and a gripping cutter head made of a material having a low yield strength, the gripping groove being provided on the gripping cutter head on.

Preferably, the cutting blade comprises a cutter body, and the cutter body is provided with a detachable cutter head, the cutter head having the cutting edge.

Preferably, the holding knife has at least two pieces. At this time, the fixed holding plate has at least three pieces, and at least one holding knife is disposed between each two adjacent fixed holding plates.

Preferably, the fixing frame comprises a lifting lug on both sides of the top of the anchor body, a pin is disposed between the two lifting ears, and the underwater release type locking clamp is stuck on the pin at two positions. On the part between the lifting ears, the distance between the two lifting ears is equivalent to the thickness of the clamping hook.

Another technical solution of the present invention is to provide a cable fishing method using the above-described integrated deep sea cable fishing and cutting system, characterized in that the steps are:

In the first step, the cable working vessel travels to the side above the fault point of the submarine communication cable to release the above-mentioned integrated deep sea cable salvage cutting system. When the integrated deep sea cable salvage cutting system correctly hooks the submarine communication cable, it is located in the cable operation. The pulling force of the cable connected to the integrated deep-sea cable fishing and cutting system detected by the ship's upper force sensor is increasing. According to the force value, the integrated deep-sea cable fishing and cutting system has correctly hooked the submarine communication cable. The remote control gives a decoupling signal to the underwater release type lock, and after the underwater release type lock receives the decoupling signal, the clamping hook is unhooked, the underwater release type lock is separated from the fixed frame, and the underwater release type lock is no longer resisted. The end of the boom continues to be pulled to the cable, and the lifting rod is pulled upward by the cable through the lifting ring and the transition lock assembly, and the lifting knife drives the holding knife and the cutting knife to rotate around the hinge point between the anchor and the anchor body, and the holding knife is held. After being rotated into position, the cable holder is held by the holding slot and the fixing slot is held, and at the same time, after the cutting knife is rotated into position, The cutting edge cuts off the cable falling in the cable sliding slot, so that the submarine communication cable near the fault point is cut off, and then the submarine communication cable caught by the integrated deep sea cable salvage cutting system is salvaged and tested, after testing The submarine communication cable is hung on the pontoon; in the second step, after the pontoon with the submarine communication cable is thrown on the sea surface, the cable working vessel travels at a distance of twice the depth from the other side of the first cutting point, releasing the cable. The fishing anchor was seized, and the submarine communication cable was seized, and the submarine communication cable that failed was eventually salvaged. After the fault is removed, the submarine communication cable after the fault is removed is connected with the spare optical cable on the ship, and then the optical cable is discharged in the direction of releasing the pontoon in the first step;

The third step, after the cable is released to the pontoon, the pontoon is picked up, and the submarine communication cable is hung on the pontoon. Docked and laid on the bottom of the sea to complete the repair. After adopting the device and the method provided by the invention, the cutting and salvage can be completed at the same time with one release, and at least 12 hours are saved in the repair time of the deep sea cable, thereby greatly improving the efficiency. Moreover, in the method provided by the invention, the force sensor provided by the cable working vessel is used to judge whether the cable is correctly hooked, and the integrated deep sea cable salvage cutting system is prevented from being mishandled due to wrong targets such as clapping stones (per In the event of a misoperation, it is necessary to re-anchor, at least 12 hours was wasted, which greatly shortened the repair time of the deep sea cable. DRAWINGS

1 is a schematic view showing the overall structure of an integrated deep sea cable fishing and cutting system according to the present invention; FIG. 2 is a front view of the anchor body portion of FIG.

Figure 3 is a front view of the anchor body;

Figure 4 is a schematic view of a fixed cutting plate;

Figure 5 is a schematic view of a fixed holding plate;

Figure 6 is a schematic view of the gripping knife;

Figure 7 is a cross-sectional view of the gripping knife;

Figure 8 is a schematic view of the cutting blade. detailed description

In order to make the present invention more apparent, the preferred embodiments are described in detail with reference to the accompanying drawings. As shown in FIG. 1 , the present invention provides an integrated deep sea cable fishing and cutting system, including an anchor body 1 , a holding knife 4 , a cutting blade 8 , a boom 10 , a fixing frame 11 , an underwater release type lock 12 , a lifting ring 13 , and Transition lock assembly 14 and the like.

2 and FIG. 3, in the present embodiment, the anchor body 1 is welded and assembled by three fixed holding plates 1-1 as shown in FIG. 5 and two fixed cutting plates 1-2 as shown in FIG. to make. A cable sliding groove 1-6 having an opening upward is provided on each of the fixed holding plate 1-1 and the fixed cutting plate 1-2. Each of the fixed holding plates 1-1 is further provided with a fixing card slot 1-5 which is inclined downward. The opening of the fixed card slot 1-5 communicates with the cable slip slot 1-6. The cable sliding groove 1-6 and the fixed card slot 1-5 respectively comprise a straight segment groove body and a semicircular segment groove bottom, and the groove width of the straight segment groove body And the diameter of the bottom of the semicircular section matches the diameter of the cable. A gripping knife mounting gap 1-3 is formed between the adjacent two fixed holding plates 1-1, and a cutter mounting gap 1-4 is formed between the adjacent two fixed cutting plates 1-2. A gripping knife 4 is provided in the gripping knife mounting gap 1-3, and a cutting blade 8 having a cutting edge is provided in the cutter mounting gap 1-4. The gripping knife 4 is hinged to the anchor body 1 by means of a gripping knife shaft 2, and the cutting blade 8 is hinged to the anchor body 1 by a cutting blade shaft 9.

The fixing frame 11 is located at the top of the anchor body 1. In the present embodiment, the fixing frame 11 includes lifting lugs 11-1 on both sides of the top of the anchor body 1, and a pin 11 is disposed between the two lifting ears 11-1. -2, the clamping hook of the underwater release type lock 12 is caught on the portion of the pin 11-2 between the two lifting ears 11-1, the distance between the two lifting ears 11-1 and the thickness of the clamping hook quite. In the present embodiment, the underwater release type lock 12 employs ENSEMBLE AR 661 BIS, and the hoist ring 13 is connected and fixed to the underwater release type lock 12, and the cable work ship releases the cable connection hoisting ring 13 for the anchor body 1. The transition lock assembly 14 is fixedly coupled to the slinger 13. In the present embodiment, the transition lock assembly 14 includes a transition sling 14-2 connected to the sling 13 by a bow shackle 14-1, and the transition sling 14-2 is passed through the rope 14- 3 The transition sling 14-4 is connected, and the transition sling 14-4 is connected to the end of the anchor body 1 by the bow shackle 14-5.

One end of the boom 10 passes through the anchor body 1 and is hinged with the gripping knife 4 and the cutting blade 8, so that during the upward movement of the boom 10, the gripping knife 4 and the cutting blade 8 are simultaneously driven around the anchor body 1 The hinge point is rotated, and the other end of the boom 10 is exposed outside the anchor body 1. When the clamp hook of the underwater release type lock 12 is caught on the pin shaft 11-2, the underwater release type lock 12 is suspended. The end of the rod 10 exposed to the outside of the anchor body 1 is held against the upward movement of the boom 10.

As shown in FIG. 6 and FIG. 2, the gripping blade 4 includes a grip holder 4-3 made of a material having a large yield strength and a grip holder 4-4 made of a material having a small yield strength. The gripping head 4-4 is provided with a holding groove 4-1, and the opening of the holding groove 4-1 faces upward, and has the same shape as the cable sliding groove 1-6. A projection 4-2 is formed along the wall of the groove on a side wall of the holding groove 4-1. In the present embodiment, the width of the projection 4-2 is one third of the width of the groove wall. The cable can smoothly fall into the holding groove 4-1. When the holding knife 4 rotates around the hinge point, the cable located in the holding groove 4-1 is pressed by the protrusion 4-2, causing the cable to yield deformation and rotate. When in place, the cable is caught between the bottom of the arc segment of the holding groove 4-1 and the bottom of the arc segment of the fixed card slot 1-5.

As shown in FIG. 8, the cutting blade 8 includes a cutter body 8-1, and the cutter body 8-1 is provided with a detachable cutter head 8-2 having a cutting edge, and the cutting edge is located at the fixed cutting plate 1 The cable of -2 slides down the side of slot 1-6. When the cutter 8 is rotated into position around the hinge point, the cable that falls within the cable slide slot 1-6 is cut by the cutting edge. Broken.

The cable fishing method of the integrated deep sea cable salvage cutting system adopting the above structure is as follows: Step 1: The cable working ship travels to the side above the fault point of the submarine communication cable, and releases the integrated deep sea cable salvage cutting system of the above structure When the integrated deep sea cable salvage cutting system correctly hooks the submarine communication cable, the tension of the cable connected to the integrated deep sea cable salvage cutting system detected by the upper force sensor of the cable working vessel is continuously increased, and the operator according to the force value Judging, the integrated deep sea cable salvage cutting system has correctly hooked the submarine communication cable. At this time, the decoupling signal is given to the underwater release type lock 12 through the wireless remote controller, and the underwater release type lock 12 receives the decoupling signal and then clamps it. The hook is unhooked, the underwater release lock 12 is separated from the fixed frame 11, and the underwater release lock 12 no longer abuts against the end of the boom 10, continues to be pulled to the cable, and is pulled by the cable through the lifting ring 13 and the transition lock assembly 14. The rod 10 moves upward, and the lifting knife 10 drives the holding knife 4 and the cutting knife 8 around the respective anchor body The hinge point between 1 rotates, and after the holding knife 4 is rotated into position, the cable is held by the holding groove 4-1 and the fixing slot 1-5 is held, and at the same time, the cutting edge 8 is rotated into position and the cutting edge will fall on the cable. The cable in the sliding slot 1-6 is cut off, so that the submarine communication cable close to the fault point is cut off, and then the submarine communication cable caught by the integrated deep sea cable salvage cutting system is salvaged and tested, and the tested submarine communication cable is Hanging on the pontoon;

In the second step, after the pontoon with the submarine communication cable is thrown on the sea surface, the cable working vessel travels at a distance of twice the depth from the other side of the first cutting point, releasing the cable fishing anchor, and catching the submarine communication cable. Finally, the section of the submarine communication cable that has failed will be salvaged. After the fault is removed, the submarine communication cable after the fault is removed is connected with the spare optical cable on the ship, and then the optical cable is discharged in the direction of releasing the pontoon in the first step;

In the third step, after the cable is released to the pontoon, the pontoon is picked up and docked with the submarine communication cable hanging on the pontoon and laid on the seabed to complete the repair.

Claims

Rights request:

1. Integrated deep sea cable fishing and cutting system, including anchor body (1), characterized in that: anchor body (1) is composed of at least two fixed holding plates (1-1) and two fixed cutting plates (1-2) Split together, each of the fixed holding plate (1-1) and the fixed cutting plate (1-2) is provided with a cable-slipping groove (1-6) with an opening upward, and a fixed holding plate (1) -1 ) There is also a fixed downward slot (1-5), the opening of the fixed slot (1-5) is connected to the cable sliding slot (1-6), and the adjacent two holding clamps are fixed ( 1-1) A gripping knife mounting gap (1-3) is formed between them, and a cutter mounting clearance (1-4) is formed between the adjacent two fixed cutting plates (1-2), and the gripping knife is installed. A gripping knife (4) is provided in the gap (1-3), and a cutting blade (8) having a cutting edge is provided in the cutter mounting gap (1-4), and the holding knife (4) and the cutting blade (8) ) are hinged to the anchor body (1); the gripping knife (4) is provided with an open upward holding groove (4-1), the shape of the holding groove (4-1) and the fixed holding plate (1-1) ) cable slip slot (1-6) and fixed card slot 1-5) Cooperate, so that the cable can smoothly fall into the holding groove (4-1) and the holding slot (4-1) fits the fixing slot when the holding knife (4) is rotated into position around the hinge point ( 1-5) Hold the cable; the cutting edge of the cutting blade (8) is on the side of the cable slip groove (1-6) of the fixed cutting plate (1-2), and the cutter (8) rotates around the hinge point. When in place, cut off the cable that falls within the cable slip slot (1-6) by the cutting edge;

The utility model further comprises a boom (10) and a fixing frame (11). The fixing frame (11) is arranged on the top of the anchor body (1), and the clamping hook of the wireless remote control underwater release type lock (12) is stuck on the fixing frame (11) Above, the underwater release type lock (12) is controlled by a remote control signal to unhook the clamp hook, and the lifting ring (13) is fixedly connected with the underwater release type lock (12), and the cable work ship releases the anchor body (1). a cable connecting sling (13); one end of the sling (10) passes through the anchor body (1) and is hinged to the holding knife (4) and the cutting knives (8), so that during the upward movement of the boom (10) At the same time, the holding knife (4) and the cutting knife (8) are rotated around the hinge point between the anchor body (1), and the other end of the boom (10) is exposed outside the anchor body (1), when underwater When the clamping hook of the release type lock (12) is caught on the fixing frame (11), the end of the hanging rod (10) exposed to the anchor body (1) is held by the underwater release type lock (12). The rod (10) cannot move upwards; one end of the transition lock assembly (14) is connected to the end of the boom (10) exposed outside the anchor body (1), End of the bail (13) is connected.

2. The integrated deep sea cable fishing and cutting system according to claim 1, wherein: the cable sliding groove (1-6), the holding groove (4-1) and the fixed card slot (1-5) both include a straight section groove body and a semicircular section groove bottom, the groove width of the straight section groove body and the diameter of the semicircular section groove bottom are matched with the diameter of the cable, when the holding knife (4) is wound around it After the hinge point between the anchor body (1) is rotated into position, the cable is stuck in the grip Between the bottom of the arc segment holding the groove (4-1) and the bottom of the arc segment of the fixed card slot (1-5).

3. The integrated deep sea cable fishing and cutting system according to claim 1, wherein: a protrusion is formed along a groove wall on a groove wall of one side of the holding groove (4-1) (4) -2), when the holding blade (4) is rotated, the cable (4-2) is pressed by the projection (4-2) to cause the cable to yield deformation.

4. The integrated deep sea cable salvage cutting system according to claim 1, wherein: the gripping knife (4) comprises a grip holder (4-3) made of a material having a high yield strength. And a gripping head (4-4) made of a material having a small yield strength, the grip groove (4-1) being provided on the gripping head (4-4).

5. The integrated deep sea cable salvage cutting system according to claim 1, wherein: the cutting blade (8) comprises a cutter body (8-1), and the cutter body (8-1) is provided with a detachable A cutter head (8-2) having the cutting edge.

6. The integrated deep sea cable fishing and cutting system according to claim 1, wherein: the holding knife (4) has at least two, and at this time, the fixed holding plate (1-1) has At least three pieces are provided with at least one gripping knife (4) between each two adjacent fixed holding plates (1-1).

7. The integrated deep sea cable salvage cutting system according to claim 1, wherein: the fixing frame (11) comprises a lifting lug (11-1) on both sides of the top of the anchor body (1), A pin (11-2) is disposed between the two lifting lugs (11-1), and the clamping hook of the underwater releasing type lock (12) is stuck on the pin (11-2) at two hanging On the portion between the ears (11-1), the distance between the two lifting ears (11-1) is equivalent to the thickness of the clamping hook.

8. A cable fishing method using the integrated deep sea cable salvage cutting system of claim 1 wherein the steps are:

In the first step, the cable work ship drives to the side above the fault point of the submarine communication cable, and releases the integrated deep sea cable salvage cutting system according to claim 1, when the integrated deep sea cable salvage cutting system correctly hooks the submarine communication cable After that, the tension of the cable connected to the integrated deep sea cable salvage cutting system detected by the upper force sensor of the cable working vessel is increasing, and the operator judges according to the force value that the integrated deep sea cable salvage cutting system has correctly hooked the submarine communication cable. At this time, the decoupling signal is given to the underwater release type lock (12) by the wireless remote controller, and after the underwater release type lock (12) receives the decoupling signal, the clamping hook is unhooked, and the underwater release type lock (12) Separated from the fixed frame (11), the underwater release lock (12) no longer resists the end of the boom (10), continues to pull the cable, passes the cable through the lifting ring (13) and the transition lock The component (14) pulls the boom (10) to move upwards, and the lifting knife (10) drives the holding knife (4) and the cutting knife (8) to rotate around the hinge point between each and the anchor body (1), holding the knife (4) After the rotation is in place, hold the cable by the holding groove (4-1) and the fixing slot (1-5). At the same time, when the cutting knife (8) is rotated into position, the cutting edge will fall on the cable sliding slot ( 1-6) The cable inside is cut off, so that the submarine communication cable close to the fault point is cut off, and then the submarine communication cable caught by the integrated deep sea cable fishing and cutting system is salvaged and tested. The tested submarine communication cable is hung. On the pontoon;

9. In the third step, after the cable is released to the pontoon, the pontoon is picked up and docked with the submarine communication cable hanging on the pontoon and laid on the seabed to complete the repair.