CN114336438A - Method for repairing mineral insulated cable copper sheath - Google Patents
Method for repairing mineral insulated cable copper sheath Download PDFInfo
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- CN114336438A CN114336438A CN202210025934.5A CN202210025934A CN114336438A CN 114336438 A CN114336438 A CN 114336438A CN 202210025934 A CN202210025934 A CN 202210025934A CN 114336438 A CN114336438 A CN 114336438A
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 80
- 239000010949 copper Substances 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 42
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 18
- 239000011707 mineral Substances 0.000 title claims abstract description 18
- 230000007547 defect Effects 0.000 claims abstract description 93
- 238000003466 welding Methods 0.000 claims abstract description 74
- 239000004033 plastic Substances 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims description 13
- 238000004049 embossing Methods 0.000 claims description 12
- 239000011295 pitch Substances 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 8
- 230000002950 deficient Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- RJDOZRNNYVAULJ-UHFFFAOYSA-L [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] RJDOZRNNYVAULJ-UHFFFAOYSA-L 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 238000010422 painting Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 239000003292 glue Substances 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Abstract
The invention discloses a method for repairing a mineral insulated cable copper sheath, which comprises the following repairing modes: s1, spot welding repair, wherein spot welding repair is to repair a welding hole or a welding seam by a spot welding machine and a welding rod; s2, performing continuous repairing, wherein the continuous repairing is to cut off a copper sheath with serious defects by a spot welding machine and then perform edge treatment; s3, casing pipe repairing, wherein the casing pipe repairing is to select a mould with the diameter larger than that of the damaged casing pipe to weld an empty pipe; and S4, performing plastic repair, wherein the plastic repair is to repair the phenomena of unevenness, sharp ends and protrusions at the defect part manually by using pliers. The invention can completely repair the copper sheath defect by analyzing the defect type and selecting the methods of spot welding repair, continuous repair or casing repair, etc., thereby replacing the quality safety of the product with lower cost.
Description
Technical Field
The invention relates to the field of cable processing, in particular to a method for repairing a mineral insulated cable copper sheath.
Background
The production process of mineral insulated cable includes cutting edge of prefabricated cable core with copper belt, longitudinally wrapping into pipe, continuous welding with argon arc welding machine, rolling in rolling machine into spiral pipe and coating the spiral pipe on the surface of cable core. Because of the influence of various complex factors such as operator skill, experience, welding pins, protective gas, molding, embossing, raw materials and the like, welding defects such as sand holes, copper leakage, welding leakage and the like inevitably occur in the continuous production process, if the defects are not processed, the quality safety hidden danger can be generated due to the entry of moisture, humidity or water in the using process of a user, or the defects are segmented by a factory, so that the user can make a joint, but the joint not only costs a large labor cost, but also the quality safety hidden danger such as easy wetting, increased contact resistance and the like also exists at the joint.
In patent CN202110368170.5, a method for rapidly repairing local cracks on the surface of a wind energy rubber cable sheath is disclosed, which comprises the following steps: cleaning the crack on the surface of the cable sheath, determining the spraying times according to the crack degree when the cable is a dynamic cable and the cable surface temperature of the crack is less than or equal to C or the cable is a static cable and the cable surface temperature of the crack is less than or equal to C, spraying the repairing material A to the crack at intervals, determining the spraying times according to the crack degree when the cable is a static cable and the cable surface temperature of the crack is greater than C, spraying the repairing material B to the crack at intervals, and curing the spraying material to finish repairing. The cable repairing method can repair the cable under the condition that the cable works normally, and ensures the economical efficiency of repair; the cable crack is sprayed with the repair material at intervals, so that the repair efficiency and repair effect of the cable are improved, the service life of the cable is guaranteed, and a proper repair mode cannot be selected.
In patent CN201110311335.1, an extruded cable sheath repairing method is disclosed, in which a repairing tape made of the same material as the cable sheath is melted by heating and keeping the temperature constant, and is fused with the cable sheath; the molten plastic is more compact by pressurization, and bubbles existing in the plastic are eliminated; and the cable sheath at the repaired position meets the specified requirements through post-processing. The repaired cable of the invention keeps the mechanical property and the sealing property of the sheath at the repaired position. The overall dimension and the appearance can be basically consistent with the original sheath by polishing. The method is simple to realize and obvious in economic effect, but the method cannot select a proper repairing mode.
In patent CN201910886365.1, a method for repairing a flexible mineral insulated cable with a metal outer sheath is disclosed, which is characterized by comprising the following steps: measuring and positioning the breakdown point by using a cable fault positioning instrument, respectively measuring the linear distance from the breakdown point to two ends of the fault cable, if the linear distance from the breakdown point to one end of the fault cable is within 100 meters, indicating that the fault cable can be repaired, and defining the end as a first end; installing a fault cable on a pay-off rack, pulling a first end head, pulling out the fault cable, and pulling to a position where a breakdown point is exposed; cutting off the metal outer sheath, and drawing the metal outer sheath forwards to expose a breakdown point; replacing the damaged or blackened insulating mica tape to recover the insulating property, and winding a tape outside the insulating mica tape again; and butt welding the metal outer sheaths together to obtain the qualified cable with repaired insulation performance. The method has the advantages that the method can be used for repairing the quality problem of the flexible mineral insulated cable, effectively reduces scrappage and inventory, but the method cannot select a proper repairing mode.
In patent CN202111237379.4, a method for breaking and repairing an outer sheath when repairing a buffer layer of a high-voltage cable is disclosed, in which a sheath withstand voltage test is performed on a cable to be repaired before repair; preparing a solder for filling in advance, breaking the outer sheath of the cable, and chamfering the cut outer sheath and the cut at 45 degrees; the buffer layer of the cut outer sheath is repaired, the cut outer sheath is butted at the cut after the repair, the welding flux for filling is used for welding, finally, the insulating self-adhesive tape, the waterproof tape and the PVC adhesive tape are used for processing, and the cable outer sheath can be used after the sheath withstand voltage test is carried out again. The high-voltage cable outer sheath has the advantages of small breaking size, excellent sealing performance and simple and convenient recovery process, and effectively ensures the sealing performance and the electrical performance of the cable outer sheath. The safe and reliable operation of the cable is ensured, but the invention can not select a proper repairing mode.
In patent CN201710608954.4, a cable repairing device and a cable repairing method are disclosed, the cable repairing device includes a repairing shell, which includes two opposite-type split shells, one adjacent side of the two split shells is hinged, the other adjacent side can be connected through a locking device, one of the two split shells is provided with a glue injection hole, the repairing shell forms a cable passing cavity with openings at two ends after being closed, and the inner diameter of the cable passing cavity is larger than the outer diameter of the cable to be repaired; the cable repairing method comprises the steps that a repairing shell covers a damaged sheath of a cable, two ends of the repairing shell are respectively sleeved on and hermetically connected with insulating sheaths of the cable at two ends of the damaged sheath of the cable, liquid repairing glue is injected through a glue injection hole, and the repairing glue and the repairing shell are used as a repairing layer of the damaged sheath of the cable after being solidified; the beneficial effects of the invention are: the repairing method has the advantages of simple structure, convenience in use, good waterproof and moistureproof performance, high strength and difficulty in damage, but the repairing method needs to use a matched device.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for repairing a copper sheath of a mineral insulated cable.
The purpose of the invention is realized by the following technical scheme:
a method for repairing a mineral insulated cable copper sheath comprises the following repairing modes:
s1, spot welding repair, wherein spot welding repair is to repair a welding hole or a welding seam by a spot welding machine and a welding rod;
s2, performing continuous repairing, wherein the continuous repairing is to cut off a copper sheath with serious defects by a spot welding machine and then perform edge treatment;
s3, casing pipe repairing, wherein the casing pipe repairing is to select a mould with the diameter larger than that of the damaged casing pipe to weld an empty pipe;
and S4, performing plastic repair, wherein the plastic repair is to repair the phenomena of unevenness, sharp ends and protrusions at the defect part manually by using pliers.
Furthermore, after spot welding repair, the welding spot needs to be polished to be flat, and copper paint is sprayed on the repaired position.
Further, the s2 specifically includes the following steps:
s21, cutting off the copper sheath with serious defects by using a spot welding machine;
s22, processing the edge of the corrugated end of the copper sheath at the joint, and enabling the cutting part of the copper sheath to be flat and have no sharp corner through edge processing;
s23, adopting a synthetic mica tape to wrap two layers to reinforce the cable core;
s24, withdrawing the cable core with defects and good treatment back to the front of the embossing machine, and enabling the embossed copper sheath to penetrate into the hollow pipe, wherein the overlapping length of the hollow pipe and the embossed sheath reaches 5-8 pitches;
s25, starting a graining machine, and graining the overlapping part of the copper sheaths;
and S26, stopping the machine after passing through the embossing machine, treating the overlapped part, polishing and flattening the welding spot after repairing, and performing surface painting treatment.
Furthermore, 1-2 layers of PE belts are padded under the copper belt at the notch of the copper sheath, so that the cable core and the insulation are prevented from being scratched by the notch of the copper belt during bending.
Further, the sleeve repairing is to penetrate the copper sheath defective cable into the empty tube, and then move the defective position to the pre-embossing machine for processing, and then perform the edge processing in S2.
Furthermore, after the shaping and repairing, the defect position is repaired by the electric welding machine and the welding rod.
The invention has the beneficial effects that:
according to the mineral insulated cable copper sheath repairing method, through analyzing the defect types, methods such as spot welding repairing, continuous repairing or sleeve repairing are selected, the copper sheath defect is completely repaired, and the quality safety of the product is realized with low cost; the method has the advantages that joints do not need to be manufactured at the positions of the defects in a segmented mode, so that labor cost is reduced, and potential safety hazards caused by the joints are avoided.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic flow chart of a sequential repair;
FIG. 3 is a table of copper sheath defect classifications;
FIG. 4 is a table showing how to determine how to handle defects in a copper sheath of a cable without an outer sheath;
fig. 5 is a table showing how to determine the defect processing method of the copper sheath of the cable having the copper sheath.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the 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.
In a first embodiment, as shown in fig. 1 to 2, a method for repairing a copper sheath of a mineral insulated cable includes the following steps:
s1, spot welding repair, wherein spot welding repair is to repair a welding hole or a welding seam by a spot welding machine and a welding rod;
s2, performing continuous repairing, wherein the continuous repairing is to cut off a copper sheath with serious defects by a spot welding machine and then perform edge treatment;
s3, casing pipe repairing, wherein the casing pipe repairing is to select a mould with the diameter larger than that of the damaged casing pipe to weld an empty pipe;
and S4, performing plastic repair, wherein the plastic repair is to repair the phenomena of unevenness, sharp ends and protrusions at the defect part manually by using pliers.
In this embodiment, the four repairing methods are selected according to different defects on the copper sheath, where the defects on the copper sheath include the following types:
A. welding holes: the phenomenon of discontinuous single welding penetration during welding;
B. and (4) seam leakage: long poor welding phenomena (penetration, cold joint, cracks and the like) occur during welding;
C. recessing: the surface of the copper sheath has a sunken phenomenon (generally no crack) after embossing;
then, the defects on the copper sheath are divided into general defects and serious defects, and the division limit is as follows:
the number of the welding holes of the A defect is more than or equal to 1 and less than or equal to 5, the A defect is a general defect, and the A defect is a serious defect when the number of the welding holes is more than 5;
when the length of the leak seam of the B defect is less than or equal to 3 pitches, the B defect is a common defect, and when the length of the leak seam is more than 3 pitches, the B defect is a serious defect;
when the length of the C defect is less than or equal to 5 pitches, the C defect is a common defect, and when the length of the C defect is more than 5 pitches, the C defect is a serious defect;
the table shown in fig. 3 is a copper sheath defect determination table.
Then respectively selecting corresponding repairing modes according to different types of mineral insulated cables, wherein the following modes are selected for repairing the copper sheath of the cable without the outer sheath copper sheath:
the general defects of the A defects are repaired by spot welding, and the serious defects of the A defects are continuously repaired;
the general defects of the B defects are repaired by spot welding, and the serious defects of the B defects are continuously repaired;
the general defects of the C defects are repaired by spot welding, and the serious defects of the C defects are continuously repaired;
the table shown in fig. 4 is a table for determining the defect handling method of the copper sheath of the cable without the copper sheath.
The following is the selection of the repairing mode of the copper sheath of the cable with the outer sheath copper sheath:
the general defects of the A defects are repaired by spot welding, and the serious defects of the A defects are repaired by spot welding;
the general defects of the B defects are repaired by spot welding, and the serious defects of the B defects are repaired by spot welding or continuously;
the general defects of the C defects are repaired by spot welding, and the serious defects of the C defects are repaired by spot welding;
the table shown in fig. 5 is a table for determining the defect processing method of the copper sheath of the cable with the copper sheath.
By analyzing the defect types, the methods of spot welding repair, continuous repair or casing repair and the like are selected, so that the defects of the copper sheath are completely repaired, and the quality safety of the product is realized with lower cost; the method has the advantages that joints do not need to be manufactured at the positions of the defects in a segmented mode, so that labor cost is reduced, and potential safety hazards caused by the joints are avoided.
The embodiment is further configured as follows: after spot welding repair, the welding spot is polished to be flat, and copper paint is sprayed on the repaired position.
The embodiment is further configured as follows: the s2 specifically comprises the following steps:
s21, cutting off the copper sheath with serious defects by using a spot welding machine;
s22, processing the edge of the corrugated end of the copper sheath at the joint, and enabling the cutting part of the copper sheath to be flat and have no sharp corner through edge processing;
s23, adopting a synthetic mica tape to wrap two layers to reinforce the cable core;
s24, withdrawing the cable core with defects and good treatment back to the front of the embossing machine, and enabling the embossed copper sheath to penetrate into the hollow pipe, wherein the overlapping length of the hollow pipe and the embossed sheath reaches 5-8 pitches;
s25, starting a graining machine, and graining the overlapping part of the copper sheaths;
and S26, stopping the machine after passing through the embossing machine, performing spot welding treatment on the overlapped part, polishing the welding spot to be flat after repairing, and performing surface painting treatment.
The embodiment is further configured as follows: 1-2 layers of PE belts are padded under the copper belt at the notch of the copper sheath, so that the cable core and the insulation are prevented from being scratched by the notch of the copper belt during bending.
The embodiment is further configured as follows: and the sleeve repairing is to penetrate a copper sheath defective cable into an empty pipe, then move the defective position to a pre-processing before a graining machine, and then carry out edge processing in S2.
The embodiment is further configured as follows: and after the shaping and repairing, repairing the defect position by using an electric welding machine and a welding rod.
In a second embodiment, based on the first embodiment, the following is a selection of a repairing method of a copper sheath of a cable without an outer sheath copper sheath:
the embodiment is further configured as follows: and the method also comprises a breakdown repairing mode, when the distance between the defect position of the breakdown repairing and the end is less than or equal to 30 m, the copper sheath is directly stripped, then the treatment is carried out according to the continuous repairing, and when the distance between the defect position of the breakdown repairing and the end is more than 30 m, the treatment is carried out according to the sleeve repairing.
In a third embodiment, based on the first embodiment, the following is a selection of a repairing method of a copper sheath of a cable with an outer sheath copper sheath:
the embodiment is further configured as follows: and the method also comprises a breakdown repairing mode, when the distance between the defect position of the breakdown repairing and the end is less than or equal to 30 m, the copper sheath is directly stripped, then the treatment is carried out according to the continuous repairing, and when the distance between the defect position of the breakdown repairing and the end is more than 30 m, the treatment is carried out according to the sleeve repairing.
In a fourth embodiment, the present embodiment is based on the first embodiment:
the embodiment is further configured as follows: defects also include uneven embossing, which is a phenomenon of uneven embossing due to stoppage or adjustment of embossing.
When the defect with uneven lines is less than or equal to 5 pitches, the defect is a common defect, when the defect with uneven lines is more than 5 pitches, the defect is a serious defect, and then a corresponding processing mode is selected.
Fifth embodiment, the difference between this embodiment and the first embodiment is: the plastic repairing in the method can also be applied to the aluminum plate, when the aluminum plate is repaired, after the plastic repairing, 5 or 6 types of soft copper wires (2.5 square) are used for tightly winding to the defect position to enable the metal belts to be communicated, a copper belt with the thickness of 0.1mm is used for wrapping two layers at the defect position, the two ends of the copper belt are overlapped with the original metal belt by not less than 50mm, and the copper belt is firmly adhered by a self-adhesive tape.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, or orientations or positional relationships that the products of the present invention are usually placed in when used, or orientations or positional relationships that are usually understood by those skilled in the art, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the equipment or the elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is also to be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Claims (6)
1. A method for repairing a mineral insulated cable copper sheath is characterized by comprising the following repairing modes:
s1, spot welding repair, wherein spot welding repair is to repair a welding hole or a welding seam by a spot welding machine and a welding rod;
s2, performing continuous repairing, wherein the continuous repairing is to cut off a copper sheath with serious defects by a spot welding machine and then perform edge treatment;
s3, casing pipe repairing, wherein the casing pipe repairing is to select a mould with the diameter larger than that of the damaged casing pipe to weld an empty pipe;
and S4, performing plastic repair, wherein the plastic repair is to repair the phenomena of unevenness, sharp ends and protrusions at the defect part manually by using pliers.
2. The method for repairing a copper sheath of a mineral insulated cable according to claim 1, wherein: after spot welding repair, the welding spot is polished to be flat, and copper paint is sprayed on the repaired position.
3. The method for repairing a copper sheath of a mineral insulated cable according to claim 1, wherein: the s2 specifically comprises the following steps:
s21, cutting off the copper sheath with serious defects by using a spot welding machine;
s22, processing the edge of the corrugated end of the copper sheath at the joint, and enabling the cutting part of the copper sheath to be flat and have no sharp corner through edge processing;
s23, adopting a synthetic mica tape to wrap two layers to reinforce the cable core;
s24, withdrawing the cable core with defects and good treatment back to the front of the embossing machine, and enabling the embossed copper sheath to penetrate into the hollow pipe, wherein the overlapping length of the hollow pipe and the embossed sheath reaches 5-8 pitches;
s25, starting a graining machine, and graining the overlapping part of the copper sheaths;
and S26, stopping the machine after passing through the embossing machine, treating the overlapped part, polishing and flattening the welding spot after repairing, and performing surface painting treatment.
4. The method for repairing a copper sheath of a mineral insulated cable according to claim 3, wherein: 1-2 layers of PE belts are padded under the copper belt at the notch of the copper sheath, so that the cable core and the insulation are prevented from being scratched by the notch of the copper belt during bending.
5. The method for repairing a copper sheath of a mineral insulated cable according to claim 1, wherein: and the sleeve repairing is to penetrate a copper sheath defective cable into an empty pipe, then move the defective position to a pre-processing before a graining machine, and then carry out edge processing in S2.
6. The method for repairing a copper sheath of a mineral insulated cable according to claim 1, wherein: and after the shaping and repairing, repairing the defect position by using an electric welding machine and a welding rod.
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| CN202210025934.5A CN114336438A (en) | 2022-01-11 | 2022-01-11 | Method for repairing mineral insulated cable copper sheath |
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| CN202210025934.5A CN114336438A (en) | 2022-01-11 | 2022-01-11 | Method for repairing mineral insulated cable copper sheath |
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| CN115910473A (en) * | 2023-01-03 | 2023-04-04 | 江苏亨鑫科技有限公司 | Extra-flexible radio frequency coaxial cable |
| CN116581696A (en) * | 2023-07-10 | 2023-08-11 | 中天科技海缆股份有限公司 | Submarine cable repairing method and submarine cable |
| CN116581696B (en) * | 2023-07-10 | 2023-09-19 | 中天科技海缆股份有限公司 | Submarine cable repairing method and submarine cable |
| CN116664571A (en) * | 2023-07-31 | 2023-08-29 | 湖南湘江电缆有限公司 | Cable quality detection method and device based on machine vision |
| CN116664571B (en) * | 2023-07-31 | 2023-10-10 | 湖南湘江电缆有限公司 | Cable quality detection method and device based on machine vision |
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