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Cable type transition joint for different armored structures of submarine cable and on-line transition method of cable type transition joint

A transition joint and armoring technology, which is applied in the direction of submarine cables, cables, insulated cables, etc., can solve problems such as insufficient connection methods, and achieve the effects of improving quality reliability, maintaining roundness, and simple process

Pending Publication Date: 2022-05-24
FIBERHOME MARINE NETWORK EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a cable-type transition joint with different armored structures of submarine cables and an online transition method thereof, which mainly solves problems such as the inadequacy of existing connection methods of submarine cables of different cable types, and can realize DA, SA , LW and other submarine optical cables, so as to ensure the integrity of the core of long submarine optical cables

Method used

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  • Cable type transition joint for different armored structures of submarine cable and on-line transition method of cable type transition joint
  • Cable type transition joint for different armored structures of submarine cable and on-line transition method of cable type transition joint
  • Cable type transition joint for different armored structures of submarine cable and on-line transition method of cable type transition joint

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Embodiment 1

[0034] An online transition method for cable-type transition joints of different armored structures of submarine cables, the cable-type transition joints of different armored structures of submarine cables adopting the above-mentioned cable-type transition joints of different armored structures of submarine cables, the method includes the following step:

[0035] First, step S1 is performed, and a cable-type transition mark is made at the position where the cable-type transition is required, and the machine is stopped.

[0036] Next, perform step S2, cut off a steel wire that needs to be transitioned, grind the end of the steel wire a little thinner, put a high-strength thermoplastic sleeve on the end of the steel wire, and perform heat shrinkage reinforcement. In places, dilute hydrochloric acid is used to remove the zinc layer on the surface to improve the welding strength.

[0037]Then, perform step S3, use a special welding method to weld the treated steel wires together,...

Embodiment 2

[0055] The present invention provides a transition joint of different armored structures of a submarine optical cable. The structure of the submarine cable transition joint includes an innermost sheathed cable core 1, a single-layer armored submarine cable, a double-layered armored submarine cable, a high-strength Heat shrinkable sleeve 6, strong fiber tape and the outermost polypropylene outer covering layer; the transition joint always keeps the innermost sheathed cable core 1 intact from the beginning to the end, and the transition section of the cable core transition joint includes double Transition between single-layer armored submarine cable and single-layer armored submarine cable (DA-SA).

[0056] The above-mentioned online transition process of different armored structures of submarine optical cables specifically includes the following steps:

[0057] (1) On-line production of large-length equal-diameter LW submarine cables, and double-layer steel wire armor for the p...

Embodiment 3

[0065] The present invention provides a transition joint of different armored structures of a submarine optical cable. The structure of the submarine cable transition joint includes an innermost sheathed cable core 1, a single-layer armored submarine cable, a double-layered armored submarine cable, a high-strength Heat shrinkable sleeve 6, strong fiber tape and the outermost polypropylene outer covering layer; the transition joint always keeps the innermost sheathed cable core 1 intact from the beginning to the end, and the transition section of the cable core transition joint includes a single Transition between layer armored submarine cable and double armored submarine cable (SA-DA).

[0066] The above-mentioned online transition process of different armored structures of submarine optical cables specifically includes the following steps:

[0067] (1) On-line production of large-length equal-diameter LW submarine cables, single-layer steel wire armor for the produced cable c...

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Abstract

The invention provides a cable type transition joint for different armored structures of submarine cables and an online transition method thereof.The joint sequentially comprises a sheath cable core (LW), a first armored submarine cable layer (SA), a second armored submarine cable layer (DA), a strong fiber adhesive tape and a polypropylene outer coating layer on the outermost layer from inside to outside, and the sheath cable core penetrates through the whole submarine cable; a transition section of the cable type transition joint comprises mutual transition between a first layer of armored submarine cable and a second layer of armored submarine cable and mutual transition between a sheath cable core and the first layer of armored submarine cable, and transition steel wires of the first layer of armored submarine cable and the second layer of armored submarine cable are welded with adjacent steel wires. And gaps generated by the steel wires are filled and removed through the connecting pipe. According to the invention, the problems of insufficient connection modes of existing submarine cables of different cable types and the like can be solved, and online transition among submarine optical cables such as DA, SA, LW and the like can be realized, so that the completeness of a cable core of a large-section long submarine optical cable is ensured.

Description

technical field [0001] The invention relates to the technical field of submarine optical cables, in particular to a cable-type transition joint with different armored structures of a submarine cable and an online transition method applied to the cable-type transition joint. Background technique [0002] Due to the different geological environments and different application depths of the seabed, especially the submarine optical cable systems that span oceans or continents often contain a variety of different cable types to suit different application environments, and submarine optical cables with different structures mostly use hard joints. to connect. [0003] At present, the more common method is to use a splice box to hard connect two different structures of submarine cables, but the outer diameter of the splice box is much larger than the outer diameter of the submarine cable, and the bending radius is large, which brings trouble to the fairlead and construction. On the ...

Claims

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Application Information

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IPC IPC(8): H01B7/14H01B7/17H01B7/40
CPCH01B7/14H01B7/17H01B7/40Y02A30/14
Inventor 何瑞相正键何茂友谢校臻程志鹏
Owner FIBERHOME MARINE NETWORK EQUIP CO LTD