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Armoring material of submarine cable and joint method of galvanized metal wires

A submarine cable and joint method technology, applied in metal processing, insulated cables, metal processing equipment, etc., can solve the problems of increasing the cost of cable manufacturing, and achieve the effect of ensuring continuous connection, ensuring current carrying capacity, and reliable welding

Pending Publication Date: 2022-08-02
HENGTONG SUBMARINE POWER CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the special operating environment of the submarine cable, the armor layer needs to provide excellent corrosion resistance at the same time. At present, there are similar non-magnetic (higher magnetic permeability) stainless steel wire solutions on the market, such as smooth non-magnetic steel wire; (refer to the patent EP2382639) stainless steel with low chromium, nickel and molybdenum content cannot avoid pitting and crevice corrosion in seawater, especially serious crevice corrosion
Moreover, if stainless steel with relatively high rare metals is selected, the manufacturing cost of the cable will be greatly increased

Method used

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  • Armoring material of submarine cable and joint method of galvanized metal wires
  • Armoring material of submarine cable and joint method of galvanized metal wires
  • Armoring material of submarine cable and joint method of galvanized metal wires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) Prepare a section of non-magnetic galvanized stainless steel wire and galvanized low carbon steel wire respectively;

[0053] (2) Concentrated sulfuric acid is slowly poured into the water along the wall of the vessel (the flask is drained with a glass rod), and is continuously stirred to dissipate the heat generated by the dilution in time. Diluted sulfuric acid (strong acid solution that can corrode the zinc layer) should be cooled to room temperature and stored in a suitable container, with a concentration range of 20%-30%;

[0054] (3) Immerse the steel wire sample of a certain length in the solution, and gas will be precipitated at this time to ensure that there is no residual galvanized layer;

[0055] (4) When no obvious bubbles are seen, take out the steel wire sample and rinse it with clean water, then wipe it with cotton cloth; the steel wire that has corroded the galvanized layer has obvious color difference

[0056] (5) Use the prepared argon arc weldin...

Embodiment 2

[0061] (1) Prepare two sections of non-magnetic galvanized stainless steel wire respectively;

[0062] (2) Concentrated sulfuric acid is slowly poured into the water along the wall of the vessel (the flask is drained with a glass rod), and is continuously stirred to dissipate the heat generated by the dilution in time. Diluted sulfuric acid (strong acid solution that can corrode the zinc layer) should be cooled to room temperature and stored in a suitable container, with a concentration range of 20%-30%;

[0063] (3) Immerse the steel wire sample of a certain length in the solution, and gas will be precipitated at this time to ensure that there is no residual galvanized layer;

[0064] (4) When no obvious bubbles are seen, take out the steel wire sample and rinse it with clean water, then wipe it with cotton cloth;

[0065] (5) Use a resistance heat welding machine, set appropriate welding parameters before welding, straighten the steel wire, and ensure that the end is flat a...

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Abstract

The invention discloses an armoring material of a submarine cable and a joint method of a galvanized metal wire, the armoring material comprises a galvanized stainless steel wire, a zinc layer at a joint is removed before the galvanized metal wire is welded, and the galvanized metal wire is subjected to bending inspection after being welded. The armored material of the submarine cable, disclosed by the invention, has the current-carrying capacity, the corrosion resistance and the economical efficiency of the armored material of the submarine cable. According to the joint method of the galvanized metal wire, the welded galvanized metal wire welding assembly meets the mechanical performance requirements of the welding position, such as tensile strength, elongation, bending and torsion, and then the performance indexes of armoring process production and later laying and operation of a cable are met.

Description

technical field [0001] The invention belongs to the technical field of submarine power cables, and particularly relates to an armoring material for submarine cables and a joint method for galvanized metal wires. Background technique [0002] The information disclosed in this Background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art. [0003] As the armoring material of submarine power cables, steel wire should at least provide mechanical protection such as transportation protection, tension during laying, and continuous protection during operation (anchor damage, fishing gear damage, seawater scouring); commonly used armoring materials are galvanized. Low carbon steel wire, copper wire, brass wire, stainless steel wire, etc.; [0004] As a structural part of the AC power ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/22B23K9/16B23K11/00B23K101/32B23K101/38
CPCH01B7/22B23K9/16B23K11/00C23C2/06C23C2/38B23K2101/32B23K2101/38
Inventor 宋光辉陈凯乔宇常梁克云杨昌林双庆勇肖龙刘冬月孙小臣
Owner HENGTONG SUBMARINE POWER CABLE CO LTD