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Light non-metal armored submarine cable

A non-metallic and armored technology, applied in the direction of submarine cables, cables, insulated cables, etc., can solve the problems that the strength of non-metallic materials is difficult to be guaranteed, the elastic stress of multi-layer armored wires, and the weight of submarine cables increase. Achieve good radial lateral compression resistance and axial tensile strength, high modulus, and reduce material costs

Active Publication Date: 2020-06-16
ZHONGTIAN TECH SUBMARINE CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For deep-water submarine cables, in order to ensure the mechanical properties of the submarine cable, the existing armor type usually adopts a multi-layer reverse metal wire twisted type. If the metal armor structure is continued to be used, this will not only increase the weight of the submarine cable, but also increase the weight of the submarine cable. At the same time, when the submarine cable is laid and operated, it will also be affected by large ocean currents and tides, which will cause large bending under the action of large water depths, and the multi-layer armored wire will easily cause large elastic stress, resulting in "lantern" drumming phenomenon; if a non-metallic armor type with a lower density is used, the strength of the non-metallic material is difficult to be guaranteed

Method used

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  • Light non-metal armored submarine cable
  • Light non-metal armored submarine cable
  • Light non-metal armored submarine cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] see image 3 As shown, this embodiment provides a single-core non-metallic armored cable HA, which includes water-blocking conductor HA1, conductor shielding layer HA2, conductor insulating layer HA3, insulating shielding layer HA4, water-blocking buffer layer HA5, metal Shielding layer HA6, inner sheath HA7, inner lining layer HA8, first armor layer HA9, cladding layer HA10, second armor layer HA11 and outer layer HA12.

[0039] The water-blocking conductor HA1 is formed by layering and twisting multiple aluminum wire materials, and each layer is filled with seawater-proof water-blocking glue. The shape of the monofilament is trapezoidal, and the resistivity is not greater than 0.028264Ω·mm at 20°C 2 / m. The conductor structure type is a type wire conductor, and the conductor cross section is 1600mm 2 . Water-blocking conductor HA1 is extruded with conductor shield HA2, conductor shield HA2 is extruded with XLPE insulation HA3, insulation is extruded with insulatio...

Embodiment 2

[0043] see Figure 4 As shown, this embodiment provides a single-core optoelectronic composite non-metallic armored cable HB, which includes water-blocking conductor HB1, conductor shielding layer HB2, conductor insulating layer HB3, insulating shielding layer HB4, and water-blocking buffer layer HB5 from inside to outside. , Metal shielding layer HB6, inner sheath HB7, optical unit HB8, first armor layer HB9, cladding layer HB10, second armor layer HB11 and outer layer HB12.

[0044] Among them, compared with Example 1, this structure removes the inner liner, and the diameter of the non-metallic armored element FA1 in the first armored layer HB9 is 6.0mm, and two light beams with a diameter of 5mm are placed symmetrically in the armored layer. For unit HB8, the armor layer of non-metallic armor element FA1 can protect the optical cable.

Embodiment 3

[0046] see Figure 5 As shown, this embodiment provides a hybrid armored cable HC, which includes water-blocking conductor HC1, conductor shielding layer HC2, conductor insulating layer HC3, insulating shielding layer HC4, water-blocking buffer layer HC5, and metal shielding layer HC6 from inside to outside. , Inner sheath HC7, inner lining layer HC8, first armor layer HC9, cladding layer HC10, second armor layer HC11 and outer layer HC12. Among them, except the first armor layer HC9 is made of multiple armored copper wires TA twisted, the diameter is 6.0mm, and the resistivity at 20°C is not greater than 0.01777Ω·mm 2 / m, the rest of the structure and materials are the same as in Example 1. The first armor layer HC9 is made of multiple armored copper wires TA twisted. The main function is to increase the carrying capacity and short-circuit current of the submarine cable.

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Abstract

The invention discloses a light non-metal armored submarine cable. The submarine cable comprises a central cable composed of one or more electric units, an armor layer and an outer coating layer, wherein the armor layer is twisted outside the central cable; the armor layer is sleeved with the outer coating layer; the armor layer is formed by twisting a plurality of circular or flat nonmetal armored elements and / or a plurality of armor metal wires; when the non-metal armored element is circular, the non-metal armored element is composed of a non-metal rod and an outer sheath extruded outside the non-metal rod, or is composed of a central rod body composed of a plurality of non-metal rods which are stacked in a tangent manner, and an outer sheath extruded outside the central rod body; and when the non-metal armored element is flat, the non-metal armored element is composed of a plurality of non-metal rods and an outer sheath extruded outside the non-metal rods. According to the invention, the problems of large submarine cable weight and large vertical laying installation stress under the condition of large water depth are solved, lighter submarine cable weight is achieved while the mechanical performance of the deep submarine cable is ensured, and the laying construction and the operation safety of the submarine cable are ensured.

Description

technical field [0001] The invention relates to the field of submarine cable technology, in particular to a light non-metallic armored submarine cable. Background technique [0002] In recent years, with the rapid development of offshore wind power and marine power transmission, the demand for submarine cables has been increasing. Due to the increasing saturation of wind farms in offshore areas and the increasing demand for power communication transmission projects across oceans and waters, submarine cables are gradually developing towards large cross-sections, high voltages, and large water depths. The existing AC / DC submarine cable structure generally adopts metal wire armor type, such as steel wire, copper wire, etc., which have relatively high tensile strength and elastic modulus, but for high-voltage submarine cable structures, the weight of the metal armor layer can generally occupy 30-50% of the overall weight of the cable. Under the condition that the water depth ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/08H01B7/14H01B7/17H01B7/18H01B7/22H01B7/28H01B7/285H01B7/288H01B7/29
CPCH01B7/08H01B7/14H01B7/17H01B7/18H01B7/225H01B7/2806H01B7/285H01B7/288H01B7/29Y02A30/14
Inventor 王文超胡明赵囿林王丽媛叶成李雷聂影谢书鸿
Owner ZHONGTIAN TECH SUBMARINE CABLE CO LTD
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