CN115882397A - Method for repairing marine cable - Google Patents
Method for repairing marine cable Download PDFInfo
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- CN115882397A CN115882397A CN202211627406.3A CN202211627406A CN115882397A CN 115882397 A CN115882397 A CN 115882397A CN 202211627406 A CN202211627406 A CN 202211627406A CN 115882397 A CN115882397 A CN 115882397A
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- layer
- armored
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- sleeve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The invention provides a method for repairing a marine cable, wherein the marine cable comprises an alloy layer and a multi-layer cable outer layer coated outside the alloy layer, and the method for repairing the marine cable comprises the following steps: sequentially stripping the outer layer of the cable to expose the damaged points on the alloy layer; winding and repairing an adhesive tape on the alloy layer corresponding to the damaged point; sleeving a protective inner sleeve on the alloy layer wrapped with the repair adhesive tape; and an armored outer sleeve is sleeved on the protective inner sleeve. According to the method for repairing the marine cable, the repairing adhesive tape is covered on the damaged point, so that the cracked position is blocked, oil leakage is prevented, the welding process is not needed, the operation is convenient, meanwhile, in the method, the stripped and exposed alloy layer is protected through the protective inner sleeve and the armored outer sleeve, the action effect of each layer of the cable is recovered through the arrangement of the protective inner sleeve and the armored outer sleeve, and the electric effect of the cable is guaranteed.
Description
Technical Field
The invention relates to the technical field of cable repair processes, in particular to a method for repairing a marine cable.
Background
In the early stage, research and application of high-voltage cable insulating materials such as XLPE, ERP and the like are limited, and high-voltage and ultrahigh-voltage cables mostly adopt an oil-filled paper insulating form as an insulating material of an electric unit. However, with the extension of the service time of the oil-filled submarine cable, the oil-filled submarine cable is easy to bear the extra tension caused by free crossing, and long time, the lead alloy sheath serving as the longitudinal water-blocking/resistance internal insulating oil inside the oil-filled submarine cable is easy to crack, so that the insulating oil inside the oil-filled submarine cable leaks from the crack of the lead sheath, the insulation reliability of the oil-filled submarine cable is affected, and meanwhile, the leaked insulating oil also pollutes the surrounding environment.
In the prior art, the research on repairing oil leakage caused by cracking of a lead alloy sleeve in an oil-filled submarine cable is less, and the method is mainly carried out by using a field lead welding mode, however, the method needs to use lead skin to weld on the field, so that an internal paper insulating layer is easily damaged at high temperature, and the reliability of the oil-filled submarine cable insulation is reduced; meanwhile, the operation can not be carried out under the working condition that continuous oil pressure is filled in the oil-filled submarine cable, so that the convenience of construction is reduced; in addition, on-site open fire construction is needed for welding, and safety risks exist under the working condition that insulating oil exists in the oil-filled submarine cable; the reliability relies on operating personnel experience, and the actual effect is difficult to the on-the-spot verification, has the hidden danger of later stage rework and does not restore oil charge sea cable each layer structure reliably, has the destruction to oil charge sea cable structural integrity. As described above, the conventional lead alloy covers cannot recover cracks effectively.
Disclosure of Invention
The invention provides a method for repairing an ocean cable, which is used for solving the problem that a cracked lead alloy sleeve cannot be effectively recovered and realizing the repair of an oil-filled ocean cable.
The invention provides a method for repairing a marine cable, wherein the marine cable comprises an alloy layer and a multi-layer cable outer layer coated outside the alloy layer 5, and the method for repairing the marine cable comprises the following steps:
sequentially stripping the outer layer of the cable to expose the damaged points on the alloy layer;
wrapping a repair adhesive tape on the alloy layer corresponding to the damaged point;
sleeving a protective inner sleeve on the alloy layer wrapped with the repair adhesive tape;
an armored outer sleeve is sleeved on the protective inner sleeve.
0 according to the method for repairing marine cable provided by the invention, the repairing adhesive tape comprises waterproof self-adhesion
Tapes and armor tapes;
the step of semi-lapping and repairing the adhesive tape on the alloy layer corresponding to the damaged point comprises the following steps:
corresponding to the damage point, a waterproof self-adhesive tape is wrapped on the upper half of the alloy layer;
the upper half of the waterproof self-adhesive tape is covered with an armor adhesive tape.
5 according to the method for repairing the marine cable provided by the invention, the outer layer of the cable comprises a layer from inside to outside
The bronze reinforcing belt layer and the polyethylene sheath layer are arranged in sequence;
the step of establishing the protection inner skleeve on the alloy-layer after repairing the sticky tape around the package still includes:
stripping off to make the polyethylene sheath layer and the bronze reinforcing belt layer arranged in a step shape
A step surface facing away from the alloy layer is formed on the copper reinforcing band layer;
0 waterproof adhesive tapes are arranged on the step surfaces in a lap joint manner;
the protective inner sleeve is sleeved on the alloy layer corresponding to the waterproof rubber strip.
According to the method for repairing the marine cable provided by the invention, after the step of sleeving the protective inner sleeve on the alloy layer wrapped with the repair adhesive tape, the method further comprises the following steps of:
and pouring polyurethane glue and a curing agent into the protection space.
5 according to the method for repairing the marine cable provided by the invention, the polyurethane is poured into the protected space
The steps of the ester glue and the curing agent also comprise the following steps:
the copper conductive adhesive tape is arranged on the inner sleeve extending from the outer layer of the cable in a semi-winding and winding way.
According to the method for repairing the marine cable, provided by the invention, a first glue pouring hole is arranged on the outer side wall of the protective inner sleeve in a penetrating manner;
the step of pouring polyurethane glue and curing agent into the protection space further comprises the following steps:
and a butyl aluminum foil adhesive tape is wound on the protective inner sleeve corresponding to the first glue filling hole.
According to the method for repairing the ocean cable, a plurality of copper wire continuous joints are formed on the armored outer sleeve, the outer layer of the cable further comprises a flat copper wire armored layer, and the flat copper wire armored layer comprises a plurality of connecting copper wires;
still include after the step of establishing the armor outer sleeve on the protection inner skleeve:
electrically connecting the plurality of connecting copper wires to the plurality of copper wire continuous connection points correspondingly.
According to the method for repairing the ocean cable provided by the invention, the step of correspondingly and electrically connecting the plurality of connecting copper wires to the plurality of copper wire continuous joints further comprises the following steps:
the armored clamp sleeve is sleeved on the outer layer of the cable and connected to the end part of the armored outer sleeve correspondingly to the continuous connecting points of the copper wires and the copper wires.
According to the method for repairing the marine cable provided by the invention, the step of sleeving the armored clamp sleeve on the outer layer of the cable and connecting the armored clamp sleeve to the end part of the armored outer sleeve is further followed by the following steps:
and (3) pouring acrylic acid glue into the armored outer sleeve, and pouring epoxy resin and a curing agent into the armored clamp sleeve.
According to the method for repairing the marine cable provided by the invention, the step of sleeving the armored clamp sleeve on the outer layer of the cable and connecting the armored clamp sleeve to the end part of the armored outer sleeve is further followed by the following steps:
the bending limiting part is sleeved on the ocean cable corresponding to the armored clamp sleeve.
In the method for repairing the marine cable, after an alloy layer in the marine cable is damaged, the outer layer of the cable on the marine cable is peeled off, so that the alloy layer is exposed, the repairing adhesive tape is covered on the damaged point, the cracked position is further sealed, oil leakage is prevented, a welding process is not needed, and the method is convenient to operate.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following embodiments will be made
While the drawings necessary for a description of the embodiments or the prior art are briefly described, it should be apparent that 5, the drawings in the following description are some of the embodiments of the invention, as would be understood by one of ordinary skill in the art
The person can also obtain other figures from these figures without creative effort.
FIG. 1 is a block flow diagram of a method for repairing a marine cable according to the present invention;
FIG. 2 is a marine cable of the present invention stripped of the outer side of the cable;
FIG. 3 is a diagram of a marine cable after a waterproof self-adhesive tape is semi-wrapped according to the present invention;
FIG. 4 is a diagram of a marine cable after being half-wrapped with an armor tape according to the present invention;
FIG. 5 is a schematic view of the marine cable with a protective inner sleeve according to the present invention;
FIG. 6 is a schematic diagram of a marine cable with copper conductive tapes wrapped in a half-wrap manner according to the present invention;
FIG. 7 is a marine cable wrapped with butyl aluminum foil tape on a protective inner sleeve according to the present invention;
FIG. 8 is a marine cable of the present invention sheathed with an armored outer sleeve;
FIG. 9 is a marine cable in which a flat copper wire armor layer is connected with copper wire continuous joints according to the invention;
FIG. 10 is a marine cable sheathed with an armored clamp sleeve according to the present invention;
fig. 11 is a marine cable sleeved with a bending limiter according to the present invention.
Reference numerals are as follows:
0 100. A marine cable; 11. an alloy layer; 12. a bronze reinforcing tape layer; 13. polyethylene
A sheath layer; 14. a flat copper wire armor layer; 21. a waterproof self-adhesive tape; 22. an armor tape; 3. protecting the inner sleeve; 4. sheathing an outer sleeve; 41. copper wire continuous connection points; 42. an armored clamp sleeve;
5. a waterproof adhesive tape; 6. a copper conductive tape; 7. butyl aluminum foil tape; 8. a bending limiter.
Detailed description of the preferred embodiments
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a method for repairing a marine cable, the marine cable 1005 includes an alloy layer 11 and a multi-layer cable outer layer coated outside the alloy layer, and the marine cable is repaired
The compound method comprises the following steps:
s10, sequentially stripping the outer layer of the cable to expose damaged points on the alloy layer;
s20, winding and repairing an adhesive tape on the alloy layer corresponding to the damaged point;
s30, sleeving a protective inner sleeve on the alloy layer wrapped with the repair adhesive tape; and 0S40, sleeving an armored outer sleeve on the protective inner sleeve.
In the method for repairing the marine cable, after the alloy layer 11 in the marine cable 100 is damaged, the outer layer of the cable on the marine cable 100 is peeled off to expose the alloy layer 11, the damaged point is covered by the repairing adhesive tape to further block the cracked position,
the invention prevents oil leakage, does not need welding process, is convenient for operation, and simultaneously, the invention 5 protects the alloy layer 11 which is stripped and exposed through the protection inner sleeve 3 and the armored outer sleeve 4,
and through the arrangement of the protective inner sleeve 3 and the armored outer sleeve 4, the action effect of each layer of the cable is recovered, and the electric effect of the cable is ensured.
Further, referring to fig. 2 to 3, the repair tape includes a waterproof self-adhesive tape 21 and an armor tape 22; step S20 includes:
0S21, corresponding to the damaged point, and arranging a waterproof self-adhesive tape on the alloy layer in a semi-wrapping manner;
s22, covering and arranging an armor tape on the upper half of the waterproof self-adhesive tape.
In the embodiment, the waterproof self-adhesive tape 21 is used for covering the damaged point on the lead alloy layer 11 in a semi-wrapping mode, and the armor tape 22 is used for covering the damaged point in a semi-wrapping mode
The waterproof self-adhesive tape 21 can strengthen the fixing function and repair the damaged point on the gold layer 11 of the lead alloy 5 in a short time.
Specifically, in the present embodiment, the waterproof self-adhesive tape 21 is a butyl aluminum foil tape.
On the other hand, referring to fig. 4 to 5, the outer layer of the cable includes a bronze reinforcing tape layer 12 and a polyethylene sheath layer 13 sequentially arranged from inside to outside; step S30 further includes:
s31, stripping to enable the polyethylene sheath layer and the bronze reinforcing belt layer to be arranged in a step shape, and forming a step surface back to the alloy layer on the bronze reinforcing belt layer;
s32, overlapping waterproof adhesive tapes on the step surfaces;
s33, sleeving the protective inner sleeve on the alloy layer corresponding to the waterproof rubber strip.
Protection inner skleeve 3 cover is established on alloy-layer 11, in order to guarantee the leakproofness between protection inner skleeve 3 and the alloy-layer 11, in this embodiment, make the outer step face that forms of multilayer cable, set up waterproof stripe 5 on the step face, protection inner skleeve 3 corresponds the waterproof stripe setting, make the opening of protection inner skleeve 3 be in the laminating setting between waterproof stripe 5, in order to protect inner skleeve 3, form confined space between waterproof stripe 5 and the alloy-layer 11, be convenient for to the protection to alloy-layer 11 and repair the sticky tape.
Similarly, step S30 is followed by:
and S34, pouring polyurethane glue and a curing agent into the protection space.
In this embodiment, the internal structure of the marine cable is stabilized, and the alloy layer 11 and the repair tape are further protected.
In this embodiment, the polyurethane glue includes epoxy resin. In addition, after the polyurethane glue and the curing agent are poured, a first preset time needs to be waited for to ensure the curing of the polyurethane glue and the curing agent.
In addition, in this embodiment, the protective inner sleeve 3 includes two half copper shells in a half copper shell type, and in the present invention, the alloy layer 11 is sleeved in the protective inner sleeve by splicing the two half copper shells in a half copper shell type.
Further, referring to fig. 6, step S34 further includes:
s341, extending the cable outer layer to the protective inner sleeve, and winding the copper conductive adhesive tape in a half-winding manner.
In this embodiment, the copper conductive adhesive tape 6 plays a role of restoring the electrical shielding layer of the oil-filled submarine cable.
Further, referring to fig. 7, a first glue filling hole is formed through the outer side wall of the protective inner sleeve 3; step S34 is followed by:
and S342, winding and arranging a butyl aluminum foil adhesive tape on the protective inner sleeve corresponding to the first glue filling hole.
In this embodiment, in order to facilitate pouring polyurethane glue and curing agent into the protection inner skleeve 3, run through on the lateral wall of protection inner skleeve 3 and be equipped with first encapsulating hole, reuse butyl aluminum foil sticky tape 7 winding on the protection inner skleeve, play fully fixed and stop up the effect in first encapsulating hole.
Based on the above installation manner of the protective inner sleeve 3, similarly, in this embodiment, please refer to fig. 8, the outer layer of the cable further includes a polyethylene sheath layer 13 and a flat copper wire armor layer 14, which are sequentially disposed from inside to outside, and step S40 includes:
s41, stripping to enable the polyethylene sheath layer and the flat copper wire armor layer to be arranged in a step shape, and forming a step surface back to the alloy layer on the polyethylene sheath layer;
s42, overlapping and arranging a second waterproof rubber strip on the step surface;
s43, sleeving the armored outer sleeve on the protective inner sleeve corresponding to the second waterproof rubber strip.
Therefore, the sealing performance and the safety of the armored outer sleeve 4 are guaranteed, and meanwhile, the overflow of subsequent glue pouring is prevented.
Likewise, the armouring outer sleeve 4 comprises two half-shells of the hafford type armouring. In the present invention, two half-shells of the hafford armor are securely connected by fasteners.
On the other hand, referring to fig. 9, a plurality of copper wire continuous connection points 41 are formed on the armored outer sleeve, the cable outer layer further includes a flat copper wire armored layer 14, and the flat copper wire armored layer 14 includes a plurality of connecting copper wires therein;
step S40 is followed by:
s44, correspondingly and electrically connecting the plurality of connecting copper wires to the plurality of copper wire continuous joints.
In this embodiment, the copper wire is connected to connect the flat wire armor layer and the copper wire connection point 41, thereby achieving an electrical continuity.
In the present invention, the connecting copper wire is connected to the copper wire continuous point 41 by crimping or welding.
Further, referring to fig. 10, after step S44, the method further includes:
s441, correspondingly connecting the copper wire and the copper wire continuous joint, sleeving an armored clamp sleeve on the outer layer of the cable, and connecting the armored clamp sleeve to the end part of the armored outer sleeve.
In this embodiment, the flat wire armor and the copper wire connection points are protected by the armor clamp sleeve 42.
In this embodiment, the armored clamp sleeve 42 includes two armored half clamps that are connected by a fastener.
Further, step S441 is followed by:
and S442, pouring acrylic acid glue into the armored outer sleeve, and pouring epoxy resin and a curing agent into the armored clamp sleeve.
In the present embodiment, the glue is cured by pouring so as to stabilize the internal structure of the marine cable 100 and further protect the protective inner sleeve 3.
Further, referring to fig. 11, step S441 further includes:
s443, corresponding to the armored clamp sleeve, a bending limiting part is sleeved on the marine cable.
In this embodiment, the bending limiting member 8 is sleeved to facilitate bending protection of the oil-filled submarine cable during laying after maintenance.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The method for repairing the marine cable is characterized by comprising an alloy layer and a multi-layer cable outer layer coated outside the alloy layer, and comprises the following steps:
sequentially stripping the outer layer of the cable to expose the damaged points on the alloy layer;
wrapping a repair adhesive tape on the alloy layer corresponding to the damaged point;
sleeving a protective inner sleeve on the alloy layer wrapped with the repair adhesive tape;
and an armored outer sleeve is sleeved on the protective inner sleeve.
2. The method of repairing a marine cable according to claim 1, wherein said repair tape comprises waterproof self-adhesive tape and armor tape;
and the step of semi-lapping and repairing an adhesive tape on the alloy layer corresponding to the damage point comprises the following steps:
corresponding to the damage point, a waterproof self-adhesive tape is wound on the alloy layer in a semi-wrapping mode;
and the upper half of the waterproof self-adhesive tape is covered with an armor adhesive tape.
3. The method for repairing a marine cable according to claim 1, wherein the outer layer of the cable comprises a bronze reinforcing tape layer and a polyethylene sheath layer which are arranged in sequence from inside to outside;
the step of sleeving a protective inner sleeve on the alloy layer after the repair adhesive tape is wrapped further comprises:
stripping to enable the polyethylene sheath layer and the bronze reinforcing belt layer to be arranged in a step shape, and forming a step surface back to the alloy layer on the bronze reinforcing belt layer;
waterproof adhesive tapes are arranged on the step surfaces in a lap joint manner;
and sleeving the protective inner sleeve on the alloy layer corresponding to the waterproof adhesive tape.
4. The method for repairing a marine cable according to claim 1, wherein after the step of sheathing a protective inner sleeve on the alloy layer wrapped with the repair tape, the method further comprises:
and pouring polyurethane glue and a curing agent into the protection space.
5. The method for repairing a marine cable according to claim 4, wherein the step of pouring the polyurethane glue and the curing agent into the protected space further comprises:
and the outer layer of the cable extends to the protective inner sleeve, and a copper conductive adhesive tape is wound on the semi-winding package.
6. The method for repairing marine cable according to claim 4, wherein a first glue filling hole is formed through an outer side wall of the inner protection sleeve;
the step of pouring polyurethane glue and curing agent into the protection space further comprises the following steps:
and a butyl aluminum foil adhesive tape is wound on the protective inner sleeve corresponding to the first glue filling hole.
7. The method of repairing a marine cable according to claim 1, wherein a plurality of copper wire continuous joints are formed on the armored outer sleeve, the cable outer layer further comprises a flat copper wire armored layer, and the flat copper wire armored layer comprises a plurality of connecting copper wires therein;
the step of sleeving the armored outer sleeve on the protective inner sleeve further comprises the following steps:
and correspondingly and electrically connecting the plurality of connecting copper wires to the plurality of copper wire continuous connection points.
8. The method of repairing a marine cable according to claim 7, wherein said step of electrically connecting a plurality of said copper bonding wires to a plurality of said copper bonding pads is followed by the step of:
and corresponding to the connecting copper wires and the copper wire continuous joints, sheathing an armored clamp sleeve on the outer layer of the cable, and connecting the armored clamp sleeve to the end part of the armored outer sleeve.
9. A method of repairing a marine cable according to claim 8, further comprising, after the step of sheathing an armored clamp sleeve over the outer cable layer and connecting to an end of the armored outer sleeve:
and pouring acrylic acid glue into the armored outer sleeve, and pouring epoxy resin and a curing agent into the armored clamp sleeve.
10. A method of repairing a marine cable according to claim 9, further comprising, after the step of sheathing an armored clamp sleeve over the outer cable layer and connecting to an end of the armored outer sleeve:
and a bending limiting part is sleeved on the marine cable corresponding to the armored clamp sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211627406.3A CN115882397A (en) | 2022-12-16 | 2022-12-16 | Method for repairing marine cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211627406.3A CN115882397A (en) | 2022-12-16 | 2022-12-16 | Method for repairing marine cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115882397A true CN115882397A (en) | 2023-03-31 |
Family
ID=85753876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211627406.3A Pending CN115882397A (en) | 2022-12-16 | 2022-12-16 | Method for repairing marine cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115882397A (en) |
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2022
- 2022-12-16 CN CN202211627406.3A patent/CN115882397A/en active Pending
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