CN111710459A - Cable core joint and manufacturing method thereof - Google Patents
Cable core joint and manufacturing method thereof Download PDFInfo
- Publication number
- CN111710459A CN111710459A CN202010584130.XA CN202010584130A CN111710459A CN 111710459 A CN111710459 A CN 111710459A CN 202010584130 A CN202010584130 A CN 202010584130A CN 111710459 A CN111710459 A CN 111710459A
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- Prior art keywords
- cable
- layer
- conductor
- shielding
- recovery
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/009—Cables with built-in connecting points or with predetermined areas for making deviations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/14—Submarine cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/02—Soldered or welded connections
- H01R4/021—Soldered or welded connections between two or more cables or wires
Abstract
A cable core joint and a manufacturing method thereof are provided, wherein the cable core joint is used for connecting a first cable and a second cable with unequal cross sections, two ends of the first cable and the second cable are sequentially coated with a conductor, a conductor shielding layer, an insulating layer and an insulating shielding layer, the cable core joint comprises a conductor welding section, a conductor shielding recovery layer, an insulating recovery layer and an insulating shielding recovery layer, the conductor shielding recovery layer and the conductor shielding layer are lapped and fused into a whole, the insulating shielding recovery layer and the insulating shielding layer are lapped and fused into a whole, the cable core joint connects the two cables with unequal cross sections, the process is simple, the construction period can be shortened, the cost is reduced, safety and reliability are achieved, and the use requirements of large-length submarine cables are met.
Description
Technical Field
The application relates to the technical field of cable intermediate connectors, in particular to a cable core connector and a manufacturing method thereof.
Background
This section is intended to provide a background or context to the embodiments of the application that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.
At present, during submarine cable design, in order to meet the current-carrying capacity requirement of a landing section or a pipe penetrating section, the current-carrying capacity of a submarine section is generally large and abundant, submarine cables with different conductor sections can be considered to be connected, at present, the connection of cable cores of non-uniform-section cables generally adopts a field hard joint mode, the cost is high, the reliability of connected products is poor, and the manufacturing period is long.
Disclosure of Invention
Accordingly, it is desirable to provide a cable core connector and a method of making the same.
The utility model provides a cable core connects in an embodiment for connect first cable and the second cable of non-uniform cross-section, first cable and second cable both ends are conductor, conductor shield, insulating layer and the insulation shielding layer that the cladding set up in proper order, cable core connects and resumes layer, insulation and restore the layer, insulation and shielding layer including conductor welding section, conductor shield resume the layer with conductor shield overlap joint fuses as an organic whole, insulation and shielding resume the layer with insulation and shielding layer overlap joint fuses as an organic whole.
In some embodiments of the present application, the cable core joint further includes a water blocking tape, a lead sheath, and a sheath, the water blocking tape is wrapped on the insulation shielding recovery layer, the lead sheath is wrapped on the water blocking tape, and the sheath is wrapped on the lead sheath.
In one embodiment of the present application, a method for manufacturing a cable core connector is provided, where the method for manufacturing the cable core connector includes the following steps:
heating and straightening treatment:
sleeving a lead pipe on the first cable or the second cable, stripping and cutting a sheath, a lead sleeve and a water blocking tape of the first cable and the second cable, and then heating and straightening the insulated wire core;
and (3) conductor welding: horizontally aligning the conductors of the first cable and the second cable, welding to form a conductor welding section, and polishing the conductor welding section after welding;
and (3) a conductor shielding layer recovery step: wrapping a strip material which is the same as the cable body on the conductor welding section to form a conductor shielding recovery layer, heating and compacting the conductor shielding recovery layer by adopting a shielding pressing die, and overlapping and fusing the conductor shielding recovery layer and the conductor shielding layer into a whole;
and an insulating layer recovery step: cutting and polishing the insulating layers of the first cable and the second cable to form a reaction force cone and a stress cone, then performing extrusion molding through an insulating extrusion molding die to form an insulating recovery layer, and polishing after performing extrusion molding and vulcanization on the insulating recovery layer;
and (3) recovering the insulating shielding layer: wrapping a strip material which is the same as the cable body on the insulation recovery layer to form an insulation shielding recovery layer, and performing heat cross-linking through a mould to enable the insulation shielding recovery layer and the insulation shielding layer to be lapped and fused into a whole;
and (3) recovering the water blocking tape, the lead sleeve and the outer sheath: and winding the semiconductive water-blocking tape which is the same as the cable body on the insulation shielding layer and the insulation shielding recovery layer, moving the lead pipe to a joint part, welding the lead pipe and the lead pipe of the cable together, and finally longitudinally splitting the sheath which is the same as the cable body and then wrapping the sheath on the lead sleeve.
In some embodiments of the present application, the conductor welding is performed by layered staggered argon arc welding or integral exothermic welding.
In some embodiments of the present application, the conductor shield recovery is by means of an internally controlled tapered shielding die or extrusion, wherein the die is heated to 140 ℃ for a 2 hour holding time.
In some embodiments of the application, the vulcanization temperature in the insulation layer recovery is set to be 220 ℃, the heat preservation is carried out for 3 hours, and the vulcanization process is carried out under the protection of 1.5MPa of nitrogen pressure.
In some embodiments of the present application, an X-ray inspection is also performed to detect whether the polished insulation contains impurities and micro-pores when the insulation layer is recovered.
In some embodiments of the present application, the water blocking tape, the lead sheath and the outer sheath are recovered by circular welding with oxyhydrogen flame to weld with the lead pipe of the original cable.
In some embodiments of the present application, when the insulation shielding layer is recovered, the insulation shielding recovery layer is recovered by wrapping a semi-conductive tape of the body or extruding the semi-conductive material of the body.
In some embodiments of the present application, when the water blocking tape, the lead sheath, and the outer sheath are restored, the water blocking tape is wrapped by lapping a cover by 50%.
According to the cable core joint and the manufacturing method thereof, two cables with unequal cross sections are connected, the conductor shielding recovery layer and the conductor shielding layer are lapped and fused into a whole, and the insulation shielding recovery layer and the insulation shielding layer are lapped and fused into a whole, so that the process is simple, the construction period can be shortened, and the use requirement of a submarine cable with large length can be met.
Drawings
Fig. 1 is a schematic structural diagram of a cable core terminal according to an embodiment of the present application.
Description of the main elements
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100 |
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200 |
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300 |
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10 |
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11 |
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12 |
| Conductor |
13 |
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14 |
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15 |
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16 |
| Insulation |
17 |
| Water-blocking |
18 |
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19 |
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21 |
The following detailed description will further illustrate the present application in conjunction with the above-described figures.
Detailed Description
In order that the above objects, features and advantages of the embodiments of the present application can be more clearly understood, a detailed description of the present application will be given below with reference to the accompanying drawings and detailed description. In addition, the features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth to provide a thorough understanding of embodiments of the application, which are part of the disclosure and not all of the disclosure.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiments of this application belong. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application.
The embodiment of the application provides a cable core connects for connect first cable and the second cable of non-uniform cross-section, first cable and second cable both ends are the conductor, conductor shield, insulating layer and the insulation shielding layer of cladding setting in proper order, cable core connects and includes that conductor welding section, conductor shield resume layer, insulation resume layer, the conductor shield resume layer with conductor shield overlap joint fuses as an organic whole, insulation resume layer with insulation shield overlap joint fuses as an organic whole.
The embodiment of the application provides a method for manufacturing a cable core connector, which comprises the following steps:
heating and straightening treatment: sleeving a lead pipe on the first cable or the second cable, stripping and cutting a sheath, a lead sleeve and a water blocking tape of the first cable and the second cable, and then heating and straightening the insulated wire core;
and (3) conductor welding: horizontally aligning the conductors of the first cable and the second cable, welding to form a conductor welding section, and polishing the conductor welding section after welding;
and (3) a conductor shielding layer recovery step: wrapping a strip material which is the same as the cable body on the conductor welding section to form a conductor shielding recovery layer, heating and compacting the conductor shielding recovery layer by adopting a shielding pressing die, and overlapping and fusing the conductor shielding recovery layer and the conductor shielding layer into a whole;
and an insulating layer recovery step: cutting and polishing the insulating layers of the first cable and the second cable to form a reaction force cone and a stress cone, then performing extrusion molding through an insulating extrusion molding die to form an insulating recovery layer, and polishing after performing extrusion molding and vulcanization on the insulating recovery layer;
and (3) recovering the insulating shielding layer: wrapping a strip material which is the same as the cable body on the insulation recovery layer to form an insulation shielding recovery layer, and performing heat cross-linking through a mould to enable the insulation shielding recovery layer and the insulation shielding layer to be lapped and fused into a whole;
and (3) recovering the water blocking tape, the lead sleeve and the outer sheath: and winding the semiconductive water-blocking tape which is the same as the cable body on the insulation shielding layer and the insulation shielding recovery layer, moving the lead pipe to a joint part, welding the lead pipe and the lead pipe of the cable together, and finally longitudinally splitting the sheath which is the same as the cable body and then wrapping the sheath on the lead sleeve.
The cable core joint connects two cables with unequal cross sections, has simple process, can shorten the construction period, reduce the cost, is safe and reliable, and meets the use requirement of a large-length submarine cable.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings.
Referring to fig. 1, embodiments of the present application provide a cable core joint 100 for connecting a first cable 200 and a second cable 300 of unequal cross-section. The cable core joint 100 comprises a conductor welding section 11, a conductor shielding recovery layer 13, an insulation recovery layer 15 and an insulation shielding recovery layer 17.
The conductor welding segment 11 is disposed at the junction of the first cable 200 and the second cable 300 for carrying current. The conductor welding section 11 is provided with a conductor shielding recovery layer 13, an insulation recovery layer 15 and an insulation shielding recovery layer 17, two ends of the first cable 200 and the second cable 300 are respectively provided with a conductor 10, a conductor shielding layer 12, an insulation layer 14 and an insulation shielding layer 16 in a wrapping mode, the conductor welding section 11 is coated with the conductor shielding recovery layer 13, and the conductor shielding recovery layer 13 and the conductor shielding layer 12 are overlapped and fused into a whole to prevent partial discharge. The conductor shielding recovery layer 13 is coated with an insulation recovery layer 15, the insulation recovery layer 15 is coated with an insulation shielding recovery layer 17, and the insulation shielding recovery layer 17 and the insulation shielding layer 16 are overlapped and fused into a whole to play a role in shielding an electric field.
It can be understood that the cable core joint 100 and the first and second cables 200 and 300 are provided with a water blocking tape 18, a lead sheath 19 and a sheath 21, the water blocking tape 18 is coated on the insulation shielding recovery layer 17 and the insulation shielding layer 16 for blocking water, and the lead sheath 19 is coated on the water blocking tape 18 for preventing water, moisture and corrosion. The sheath 21 is coated on the lead sleeve 19 and used for enhancing mechanical performance and preventing mechanical damage.
The embodiment of the present application provides a method for manufacturing a cable core connector 100, specifically including the following steps:
s1, heating and straightening;
specifically, firstly, a proper lead pipe is selected according to the sizes of the first cable 200 and the second cable 300 and is sleeved on the first cable 200 or the second cable 300 in advance, then the sheath 21, the lead sleeve 19 and the water blocking tape 18 are stripped and cut respectively according to the technological requirements to expose the insulated wire core, the end head of the first cable 200 and the end head of the second cable 300 with unequal cross sections are horizontally fixed on a support, the insulated wire core is heated and straightened, and then the sheath, the lead sleeve and the insulation are stripped and cut respectively according to the technological requirements.
S2, welding a conductor;
specifically, the conductors of the first cable 200 and the conductors of the second cable 300 are horizontally aligned and soldered. And forming a conductor welding section 11 after welding by adopting a welding mode of layered staggered argon arc welding or integral exothermic welding, and then polishing the conductor welding section 11 to be smooth and round.
S3, recovering the conductor shielding layer;
specifically, a strip material which is the same as the cable body is wrapped on the conductor welding section 11 to form a conductor shielding recovery layer 13, and then a shielding pressing die is used for heating and compacting to lap and fuse the conductor shielding recovery layer 13 and the conductor shielding layer 12 into a whole. In one embodiment, a masking die is used in which the inner bore is tapered. When heating, the heating temperature is 140 ℃, and the holding time is 2 hours, in other embodiments, the conductor shield recovery layer 13 can be formed by extrusion.
S4, recovering the insulating layer;
specifically, the insulating layer 14 of the first cable 200 and the insulating layer 14 of the second cable 300 are cut into pencil-head shapes, and the pencil-head shapes are polished by abrasive paper after being cut, so that the surfaces of the pencil-head shapes are cleaned, and the insulating layers are convenient to recover. The insulation recovery layer 15 is formed by extrusion molding in an insulation extrusion mold. After extrusion and vulcanization, the vulcanization temperature is set to 220 ℃, the temperature is kept for 3h, and the vulcanization process is carried out under the protection of 1.5MPa of nitrogen pressure. The insulation recovery layer 15 is then surface smoothed to smooth the transition between the first cable 200 and the second cable 300. After the insulation recovery layer 15 is polished, the insulation recovery layer 15 is photographed and inspected by an X-ray machine to determine whether impurities and micropores are present in the insulation and whether the insulation interface is smooth.
S5, recovering the insulation shielding layer;
specifically, a strip material which is the same as the cable body is wrapped on the insulation recovery layer 15 to form an insulation shielding recovery layer 17, the wrapping is smooth and tight, heating and crosslinking are carried out by adopting a proper mould after the wrapping is finished, the heating temperature is 140 ℃, the heat is preserved for 0.5h, or the insulation shielding recovery layer 17 and the insulation shielding layer 16 are lapped and fused into a whole by adopting a mode of extruding a semiconductor material of the body.
S6, restoring the water blocking tape, the lead sleeve and the outer sheath;
specifically, a semi-conductive water-blocking tape 18 consistent with the cable body is wrapped on the insulation shielding layer 16 and the insulation shielding recovery layer 17. The number of the water-blocking tape 18 can be 1 or more, and the water-blocking tape is wrapped in a mode of covering 50%, and the wrapping needs to be smooth and compact. And moving the lead pipe sleeved in advance to the joint part, and performing annular welding by adopting oxyhydrogen flame to weld the lead pipe with the original lead pipe on the cable together to realize the recovery of the lead sleeve 19. And a sheath skin consistent with the cable body is longitudinally split and then wrapped on the lead sheath 19, and then heated by an alcohol blast burner until the sheath can be effectively bonded.
The cable core joint 100 and the manufacturing method thereof connect two cables with unequal cross sections, have simple process, can shorten the construction period, reduce the cost, are safe and reliable, and meet the use requirements of the submarine cable with large length.
Although the embodiments of the present application have been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the embodiments of the present application.
Claims (10)
1. The utility model provides a cable core connects for connect first cable and the second cable of non-uniform cross section, conductor shielding layer, insulating layer and the insulation shielding layer that first cable and second cable both ends cladding set up in proper order, its characterized in that: the cable core joint comprises a conductor welding section, a conductor shielding recovery layer, an insulation recovery layer and an insulation shielding recovery layer, wherein the conductor shielding recovery layer and the conductor shielding layer are lapped and fused into a whole, and the insulation shielding recovery layer and the insulation shielding layer are lapped and fused into a whole.
2. The cable core joint of claim 1, wherein: the cable core joint further comprises a water blocking tape, a lead sleeve and a sheath, wherein the water blocking tape is coated on the insulation shielding recovery layer, the lead sleeve is coated on the water blocking tape, and the sheath is coated on the lead sleeve.
3. A method of manufacturing a cable core connector for manufacturing the cable core connector of any one of claims 1 to 2, characterized in that the manufacturing method comprises the steps of:
heating and straightening treatment: sleeving a lead pipe on the first cable or the second cable, stripping and cutting a sheath, a lead sleeve and a water blocking tape of the first cable and the second cable, and then heating and straightening the insulated wire core;
and (3) conductor welding: horizontally aligning the conductors of the first cable and the second cable, welding to form a conductor welding section, and polishing the conductor welding section after welding;
and (3) a conductor shielding layer recovery step: wrapping a strip material which is the same as the cable body on the conductor welding section to form a conductor shielding recovery layer, heating and compacting the conductor shielding recovery layer by adopting a shielding pressing die, and overlapping and fusing the conductor shielding recovery layer and the conductor shielding layer into a whole;
and an insulating layer recovery step: cutting and polishing the insulating layers of the first cable and the second cable to form a reaction force cone and a stress cone, then performing extrusion molding through an insulating extrusion molding die to form an insulating recovery layer, and polishing after performing extrusion molding and vulcanization on the insulating recovery layer;
and (3) recovering the insulating shielding layer: wrapping a strip material which is the same as the cable body on the insulation recovery layer to form an insulation shielding recovery layer, and performing heat cross-linking through a mould to enable the insulation shielding recovery layer and the insulation shielding layer to be lapped and fused into a whole;
and (3) recovering the water blocking tape, the lead sleeve and the outer sheath: and winding the semiconductive water-blocking tape which is the same as the cable body on the insulation shielding layer and the insulation shielding recovery layer, moving the lead pipe to a joint part, welding the lead pipe and the lead pipe of the cable together, and finally longitudinally splitting the sheath which is the same as the cable body and then wrapping the sheath on the lead sleeve.
4. The method of making a cable core joint of claim 3, wherein: the conductor welding adopts a layered staggered argon arc welding or integral exothermic welding mode.
5. The method of making a cable core joint of claim 3, wherein: the conductor shielding layer is recovered by adopting a mode of internally controlling a shielding pressing die with taper or extruding, wherein the heating temperature of the pressing die is 140 ℃, and the heat preservation time is 2 hours.
6. The method of making a cable core joint of claim 3, wherein: the vulcanization temperature in the recovery of the insulating layer is set to 220 ℃, the heat preservation is carried out for 3 hours, and the vulcanization process is carried out under the protection of 1.5MPa of nitrogen pressure.
7. The method of making a cable core joint of claim 3, wherein: when the insulating layer is recovered, X-ray inspection is needed to detect whether the polished insulating layer contains impurities and micropores.
8. The method of making a cable core joint of claim 3, wherein: when the water-blocking tape, the lead sleeve and the outer sheath are recovered, the water-blocking tape, the lead sleeve and the outer sheath are annularly welded by oxyhydrogen flame so as to be welded with a lead pipe on the original cable.
9. The method of making a cable core joint of claim 3, wherein: when the insulation shielding layer is recovered, the insulation shielding recovery layer is recovered by wrapping a semi-conductive strip of the body or extruding and injecting semi-conductive material of the body.
10. The method of making a cable core joint of claim 2, wherein: and when the water blocking tape, the lead sleeve and the outer sheath are recovered, the water blocking tape is wrapped in a covering mode of 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010584130.XA CN111710459A (en) | 2020-06-23 | 2020-06-23 | Cable core joint and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010584130.XA CN111710459A (en) | 2020-06-23 | 2020-06-23 | Cable core joint and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN111710459A true CN111710459A (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010584130.XA Pending CN111710459A (en) | 2020-06-23 | 2020-06-23 | Cable core joint and manufacturing method thereof |
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| Country | Link |
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| CN (1) | CN111710459A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114360764A (en) * | 2021-12-10 | 2022-04-15 | 江苏亨通高压海缆有限公司 | Manufacturing method of high-pressure submarine cable factory joint |
| CN114347453A (en) * | 2021-12-08 | 2022-04-15 | 江苏亨通高压海缆有限公司 | High-voltage cable molding type joint interface processing method |
| 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 |
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| CN209929510U (en) * | 2019-04-29 | 2020-01-10 | 江苏亨通高压海缆有限公司 | Beach joint for optical fiber composite submarine cable |
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| CN114347453A (en) * | 2021-12-08 | 2022-04-15 | 江苏亨通高压海缆有限公司 | High-voltage cable molding type joint interface processing method |
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| 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 |
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Address after: 226010 No. 1 South Road, Nantong economic and Technological Development Zone, Jiangsu, China Applicant after: Zhongtian Technology submarine cable Co.,Ltd. Address before: 226010 No. 1 South Road, Nantong economic and Technological Development Zone, Jiangsu, China Applicant before: ZHONGTIAN TECHNOLOGIES SUBMARINE CABLE Co.,Ltd. |
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