CN114178659A - Submarine cable flexible joint conductor connecting method - Google Patents
Submarine cable flexible joint conductor connecting method Download PDFInfo
- Publication number
- CN114178659A CN114178659A CN202210015057.3A CN202210015057A CN114178659A CN 114178659 A CN114178659 A CN 114178659A CN 202210015057 A CN202210015057 A CN 202210015057A CN 114178659 A CN114178659 A CN 114178659A
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- China
- Prior art keywords
- welding
- conductor
- submarine cable
- monofilaments
- flexible joint
- Prior art date
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- 239000004020 conductor Substances 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000003466 welding Methods 0.000 claims abstract description 108
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 238000005498 polishing Methods 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- CFQGDIWRTHFZMQ-UHFFFAOYSA-N argon helium Chemical compound [He].[Ar] CFQGDIWRTHFZMQ-UHFFFAOYSA-N 0.000 claims description 5
- 229910001316 Ag alloy Inorganic materials 0.000 claims description 4
- YCKOAAUKSGOOJH-UHFFFAOYSA-N copper silver Chemical compound [Cu].[Ag].[Ag] YCKOAAUKSGOOJH-UHFFFAOYSA-N 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Processing Of Terminals (AREA)
Abstract
The utility model relates to a cable flexible joint field aims at solving the problem that current submarine cable conductor connects performance influence use, provides submarine cable flexible joint conductor connecting method, includes: cleaning the welding surface of the conductor; clamping a conductor to be welded, so that the distance between the connection points of adjacent monofilaments of the conductor on the same layer is 9-11mm, and the distance between the nearest connection points of two adjacent layers of monofilaments of the conductor is 25-35 mm; after the position is determined, respectively positioning each monofilament by spot welding; sequentially welding and connecting the monofilaments, adopting protective gas for protection in the welding process, and cooling the monofilaments by adopting a cooling device after welding; and polishing the welding point after welding until the deviation between the outer diameter of the monofilament at the welding point and the standard outer diameter of the monofilament is +/-0.2 mm. The beneficial effect of this application is that the joint compliance is good, joint design and conductor body structure difference are little.
Description
Technical Field
The application relates to the field of cable flexible connectors, in particular to a submarine cable flexible connector conductor connecting method.
Background
The submarine cable is suitable for a submarine power transmission system, the submarine cable has long transmission distance, and a soft joint needs to be manufactured when the length of the submarine cable produced without joints cannot meet the requirement of delivery length or engineering change occurs. When the submarine cable is used for daily maintenance and is repaired due to abnormal damages such as anchor damages, a soft joint is required to be manufactured.
Because submarine cables are special in use scene, certain external force action (such as bending and stretching) may need to be borne in the laying process, the structure of the conductor joint formed by the connection mode of submarine cable flexible joint conductors in the prior art is greatly different from that of a submarine cable body, and the submarine cable flexible joint conductors can be influenced in use due to joint strength or flexibility and other reasons.
Disclosure of Invention
The application aims to provide a submarine cable flexible joint conductor connecting method to solve the problem that the performance of the existing submarine cable conductor joint influences the use.
The embodiment of the application is realized as follows:
the embodiment of the application provides a submarine cable flexible joint conductor connecting method, which comprises the following steps:
cleaning the welding surface of the conductor;
clamping a conductor to be welded, so that the distance between the connection points of adjacent monofilaments on the same layer of the conductor is 9-11mm, and the distance between the nearest connection points of two adjacent layers of monofilaments of the conductor is 25-35 mm; after the position is determined, respectively positioning each monofilament by spot welding;
sequentially welding and connecting the monofilaments, adopting protective gas for protection in the welding process, and cooling the monofilaments by adopting a cooling device after welding;
and polishing the welding point after welding until the deviation between the outer diameter of the monofilament at the welding point and the standard outer diameter of the monofilament is +/-0.2 mm.
The conductor connecting method in the embodiment of the application adopts the single wires in each layer to stagger layer by layer to set the interval, and the single wires in each layer are welded at the interval by staggering layer by layer to set the interval, so that the single wires in each layer can slide freely when the conductor is bent, the conductor has good flexibility, the recovered structure is the same as the body structure, the resistance of the conductor after welding is increased slightly, the temperature rise at the soft joint is small, the influence on insulation can be almost ignored, and the influence on the long-term stable operation of the cable is not large.
In one embodiment, the pitch of the connection points of adjacent monofilaments on the same layer of the conductor is 10mm, and the pitch of the nearest connection points of two adjacent layers of monofilaments of the conductor is 30 mm.
In one embodiment, during welding, the welding wire is fed uniformly, and the welding gun moves at a constant speed to ensure uniform heating of the welding position; and a cooling device is fixed behind the movement direction of the welding gun and used for cooling the welding point of the welding within set time after the welding of the welding gun.
In one embodiment, the material of the conductor is one of copper, copper alloy, aluminum and aluminum alloy; the welding wire for welding is made of copper-silver alloy.
The welding joint can be ensured to have small resistance by adopting the copper-silver alloy wire for welding.
In one embodiment, the shielding gas is argon helium.
Argon-helium mixed gas welding is adopted to carry out inert gas protection on the conductor, so that the conductor material is prevented from being oxidized in the welding process.
In one embodiment, cleaning the conductor weld surface comprises cleaning the individual filament weld surface and 30mm inner and outer peripheral surfaces of each side with an organic solvent prior to welding, and then removing the oxide film layer from the weld surface.
In one embodiment, after the filaments are spot welded in place, the filaments are corrected for distortion so that the weld gaps are uniform.
In one embodiment, the conductor is a stranded compacted circular conductor or a non-compacted circular conductor.
In one embodiment, the butt-welded joint is heat treated.
After welding, polishing and heat treatment can effectively control the size of the welding point and adjust the internal crystal phase structure of the welding point.
In one embodiment, the heat treatment temperature is 240 ℃ and 280 ℃, and the holding time is 1.5 h.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a cross-sectional view of a conductor in an embodiment of the present application;
fig. 2 shows a schematic distribution of the welding points of the second layer of filaments of the conductor of fig. 1 conducting from inside to outside.
Description of the main element symbols:
| |
10 |
| |
11 |
| Welding point | 12 |
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
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 this invention belongs. The terminology used herein 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 application. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Some embodiments of the present application are described in detail. In the following embodiments, features of the embodiments may be combined with each other without conflict.
Examples
Referring to fig. 1, the structure of the conductor 10 of the submarine cable in the present embodiment includes inner and outer multiple layers each of which is composed of 1 or more monofilaments 11. In this embodiment, each layer of monofilaments (except the center one) generally encloses a circle. In other embodiments, each layer of monofilaments may also enclose a rectangle, square or other shape, and the number of layers may be set as desired, such as 4 layers as shown in fig. 1.
In one embodiment, the conductor is a stranded compacted round conductor or a non-compacted round conductor. The material of the conductor may be copper, copper alloy, aluminum or aluminum alloy.
The embodiment provides a submarine cable flexible joint conductor connecting method, which comprises the following steps:
cleaning the welding surface of the conductor, including cleaning the welding surface of each monofilament and impurities such as oil, dirt and the like on the inner peripheral surface and the outer peripheral surface of 30mm on each of the two sides by using organic solvents such as gasoline, acetone and the like before welding, and then cleaning an oxidation film layer on the welding surface to ensure the welding quality;
clamping a conductor to be welded, so that the distance between the connection points of adjacent monofilaments on the same layer of the conductor is 9-11mm, such as 10mm, and the distance between the nearest connection points of two adjacent layers of monofilaments of the conductor is 25-35mm, such as 30 mm; after the position is determined, respectively positioning each monofilament by spot welding, and then correcting deformation of each monofilament to ensure that gaps among all connecting points are uniform;
sequentially welding and connecting the monofilaments, adopting protective gas for protection in the welding process, and cooling the monofilaments by adopting a cooling device after welding; the welding wire for welding adopts copper-silver alloy, the shielding gas adopts argon-helium mixed gas, the argon-helium mixed gas is adopted for shielding welding, the conductor material can be prevented from being oxidized in the welding process, the welding heat release is small, the heat is easy to control, the stability of the direct current resistance of the welding conductor is high, and the resistance is increased slightly. The strength consistency of the conductor after welding is good;
in one embodiment, in the welding process, the angle of a welding wire and a welding gun corresponds to a welding position at a proper angle, the welding wire uniformly feeds the wire, the welding gun moves at a constant speed to ensure that the welding position is uniformly heated, the deformation of a welding conductor is reduced, and the change of the welding point residual height is noticed; a cooling device is fixed behind the movement direction of the welding gun and used for cooling the welding point 12 after the welding gun is welded for a set time, and heat generated by welding can be dissipated in time, so that the size of the conductor is reduced, and compared with the crimping, the conductor occupies small independent space and has small resistance change;
and polishing the welding point after welding until the deviation between the outer diameter of the monofilament at the welding point and the standard outer diameter of the monofilament is +/-0.2 mm. And then, carrying out heat treatment on the welding point, wherein the heat treatment temperature is optionally 240-280 ℃, and the heat preservation time is 1.5 h. After welding, polishing and heat treatment can effectively control the size of the welding point and adjust the internal crystal phase structure of the welding point. The main goal of the heat treatment is to eliminate the welding stress and improve the overall mechanical properties of the conductor.
Fig. 2 shows a schematic diagram of the welding points of the second layer of filaments from the inside to the outside of the conductor of fig. 1. As shown, there are 6 filaments in the layer, corresponding to 6 welds. The 6 welds shown are spaced in sequence along an axis parallel to the conductor. Alternatively, the 6 pads shown are distributed on a busbar L1 of the conductor, with a spacing between adjacent pads of about 10 mm. Therefore, during welding, the moving path of the welding gun is a straight line, the welding gun can be kept at the same side of the conductor, welding of 6 welding points can be conveniently completed by the straight line movement of the welding gun, and the operation is convenient and efficient.
The conductor connecting method in the embodiment of the application adopts the single wires in each layer to stagger layer by layer to set the interval, and the single wires in each layer are welded at the interval by staggering layer by layer to set the interval, so that the single wires in each layer can slide freely when the conductor is bent, the conductor has good flexibility, the recovered structure is the same as the body structure, the resistance of the conductor after welding is increased slightly, the temperature rise at the soft joint is small, the influence on insulation can be almost ignored, and the influence on the long-term stable operation of the cable is not large.
Although the present application has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the present application.
Claims (10)
1. A submarine cable flexible joint conductor connection method is characterized by comprising the following steps:
cleaning the welding surface of the conductor;
clamping a conductor to be welded, so that the distance between the connection points of adjacent monofilaments on the same layer of the conductor is 9-11mm, and the distance between the nearest connection points of two adjacent layers of monofilaments of the conductor is 25-35 mm; after the position is determined, respectively positioning each monofilament by spot welding;
sequentially welding and connecting the monofilaments, adopting protective gas for protection in the welding process, and cooling the monofilaments by adopting a cooling device after welding;
and polishing the welding point after welding until the deviation between the outer diameter of the monofilament at the welding point and the standard outer diameter of the monofilament is +/-0.2 mm.
2. The submarine cable flexible joint conductor connection method according to claim 1, wherein:
the distance between the connection points of the adjacent monofilaments on the same layer of the conductor is 10mm, and the distance between the nearest connection points of the two adjacent layers of monofilaments of the conductor is 30 mm.
3. The submarine cable flexible joint conductor connection method according to claim 1, wherein:
in the welding process, the welding wire uniformly feeds the wire, and the welding gun moves at a constant speed to ensure that the welding position is uniformly heated; and a cooling device is fixed behind the movement direction of the welding gun and used for cooling the welding point of the welding within set time after the welding of the welding gun.
4. The submarine cable flexible joint conductor connection method according to claim 1, wherein:
the conductor is made of one of copper, copper alloy, aluminum and aluminum alloy; the welding wire for welding adopts copper-silver alloy.
5. The submarine cable flexible joint conductor connection method according to claim 4, wherein:
the protective gas adopts argon-helium mixed gas.
6. The submarine cable flexible joint conductor connection method according to claim 1, wherein:
cleaning the welding surface of the conductor comprises cleaning impurities on the welding surface of each monofilament and the inner and outer peripheral surfaces of 30mm on two sides of each monofilament by using an organic solvent before welding, and then cleaning an oxidation film layer on the welding surface.
7. The submarine cable flexible joint conductor connection method according to claim 1, wherein:
after the monofilaments are positioned by spot welding, the deformation of each monofilament is corrected, so that the gaps of each welding point are uniform.
8. The submarine cable flexible joint conductor connection method according to claim 1, wherein:
the conductor is a stranded compacted circular conductor or a non-compacted circular conductor.
9. The submarine cable flexible joint conductor connection method according to claim 1, wherein:
and heat-treating the butt-welded joint.
10. The submarine cable flexible joint conductor connection method according to claim 9, wherein:
the heat treatment temperature is 240 ℃ and 280 ℃, and the heat preservation time is 1.5 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210015057.3A CN114178659A (en) | 2022-01-07 | 2022-01-07 | Submarine cable flexible joint conductor connecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210015057.3A CN114178659A (en) | 2022-01-07 | 2022-01-07 | Submarine cable flexible joint conductor connecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114178659A true CN114178659A (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210015057.3A Pending CN114178659A (en) | 2022-01-07 | 2022-01-07 | Submarine cable flexible joint conductor connecting method |
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| Country | Link |
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| CN (1) | CN114178659A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290144A (en) * | 2011-06-14 | 2011-12-21 | 浙江晨光电缆股份有限公司 | Equal outer diameter welding method of cable conductors |
| JP2012022820A (en) * | 2010-07-13 | 2012-02-02 | Viscas Corp | Submarine cable |
| CN103474858A (en) * | 2013-09-12 | 2013-12-25 | 昆山奥德鲁自动化技术有限公司 | Method for welding multilayer cable conductors |
| CN107346855A (en) * | 2016-05-06 | 2017-11-14 | 广东坚宝电缆有限公司 | A kind of cross-linked cable insulating conductor tab connection method |
| US20180375223A1 (en) * | 2017-06-14 | 2018-12-27 | Nexans | HVDC Mass Impregnated Cable Transition Joint |
| CN113380464A (en) * | 2021-06-19 | 2021-09-10 | 中航宝胜海洋工程电缆有限公司 | Method for processing submarine cable conductor for cost saving and efficiency improvement |
-
2022
- 2022-01-07 CN CN202210015057.3A patent/CN114178659A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012022820A (en) * | 2010-07-13 | 2012-02-02 | Viscas Corp | Submarine cable |
| CN102290144A (en) * | 2011-06-14 | 2011-12-21 | 浙江晨光电缆股份有限公司 | Equal outer diameter welding method of cable conductors |
| CN103474858A (en) * | 2013-09-12 | 2013-12-25 | 昆山奥德鲁自动化技术有限公司 | Method for welding multilayer cable conductors |
| CN107346855A (en) * | 2016-05-06 | 2017-11-14 | 广东坚宝电缆有限公司 | A kind of cross-linked cable insulating conductor tab connection method |
| US20180375223A1 (en) * | 2017-06-14 | 2018-12-27 | Nexans | HVDC Mass Impregnated Cable Transition Joint |
| CN113380464A (en) * | 2021-06-19 | 2021-09-10 | 中航宝胜海洋工程电缆有限公司 | Method for processing submarine cable conductor for cost saving and efficiency improvement |
Non-Patent Citations (1)
| Title |
|---|
| 凌炜: "《船舶氩弧焊》", 哈尔滨工程大学出版社, pages: 72 * |
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Application publication date: 20220315 |