Submarine power cable with insulating composite layer

A technology for submarine power cables and insulating composite materials, which is applied to power cables with shielding/conducting layers, submarine cables, insulated cables, etc. performance, effect of suppressing internal air gaps

Inactive Publication Date: 2014-12-24
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in recent years, the number of engineering construction projects has increased day by day. On the one hand, those installed on the seabed with complex environments have long been affected by unexpected impacts such as wave impact, seawater corrosion, reefs, and many unknown factors. On the other hand, due to the long-term Work, its durable load and service life have always been problems that the power industry needs to improve and solve

Method used

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  • Submarine power cable with insulating composite layer
  • Submarine power cable with insulating composite layer
  • Submarine power cable with insulating composite layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Take 90 parts of nano-modified epoxy resin, 140 parts of methyl tetrahydrophthalic anhydride, 200 parts of 400 mesh silicon powder, 30 parts of Qishi toughening agent, 6 parts of nano-silicon oxide, 80 parts of polyimide, and 20 parts of nano-titanium dioxide. 2 parts, 2 parts of bis(2-ethylhexyl) phthalate, mix evenly and put it into an open mixer or internal mixer, heat at 100°C, and process for 20 minutes to form an insulating material layer.

[0034] Take polyolefin compound: 60 parts of polyethylene-vinyl acetate copolymer, composite antioxidant: 0.5 parts of antioxidant 1010 and antioxidant 168, coupling agent: 0.5 part of vinyltrimethoxysilane, 2 parts of silica gel Inorganic flame retardant: 40 parts of magnesium hydroxide are mixed evenly and processed into a reinforcing layer.

[0035] First wrap the cable conductor with an insulating composite material layer, then vacuum dry, soak in oil, and then wrap a metal sheath for continuous extrusion, then wrap the ca...

Embodiment 2

[0038] Take 90 parts of nano-modified epoxy resin, 150 parts of methyl tetrahydrophthalic anhydride, 200 parts of 400 mesh silicon powder, 25 parts of Qishi toughening agent, 6 parts of nano silicon oxide, 85 parts of polyimide, and 24 parts of nano titanium dioxide. 2 parts, 3 parts of bis(2-ethylhexyl) phthalate, mixed evenly and put into an open mixer or internal mixer, heating temperature 100 ℃, processing time 20 minutes to process and form an insulating material layer.

[0039] Take polyolefin compound: 70 parts of polyethylene-vinyl acetate copolymer, composite antioxidant: 0.8 parts of antioxidant 1010 and antioxidant 168, coupling agent: 1 part of vinyltrimethoxysilane, 5 parts of silica gel Parts, inorganic flame retardant: 45 parts of magnesium hydroxide are mixed evenly and processed into a reinforcement layer.

[0040] First wrap the cable conductor with an insulating composite material layer, then vacuum dry, soak in oil, and then wrap a metal sheath for continuo...

Embodiment 3

[0043] Take 90 parts of nano-modified epoxy resin, 160 parts of methyl tetrahydrophthalic anhydride, 250 parts of 400 mesh silicon powder, 30 parts of Qishi toughening agent, 8 parts of nano silicon oxide, 90 parts of polyimide, and 25 parts of nano titanium dioxide. Parts, 5 parts of bis(2-ethylhexyl) phthalate, mixed evenly, put into an open mixer or internal mixer, heating temperature 100 ℃, processing time 20 minutes to process and form an insulating material layer.

[0044] Take polyolefin compound: 80 parts of polyethylene-vinyl acetate copolymer, composite antioxidant: 1 part of antioxidant 1010 and 1 part of antioxidant 168, coupling agent: 1.5 parts of vinyltrimethoxysilane, 10 parts of silica gel Parts, inorganic flame retardant: 50 parts of magnesium hydroxide are mixed evenly and processed into a reinforcement layer.

[0045] The general chemical formula of the silica gel used in all the examples is mSiO2·nH2O.

[0046] First wrap the cable conductor with an insul...

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Abstract

The invention provides a submarine power cable with an insulating composite layer. The submarine power cable sequentially comprises a cable conductor, a metal jacket, a reinforced layer, a polyethylene jacket, a copper strip lapped layer, an armor layer and an outer coating layer from an inner layer to an outer layer, and further comprises the insulating composite layer. A central oil passage is formed in the cable conductor, radial cross-section sides of the reinforced layer and the armor layer are in pup joint with each other, and the insulating composite layer is arranged between the cable conductor and the metal jacket and structurally comprises an insulating material layer and an insulating shielding layer. The submarine power cable has the advantages that the pressure-resistant insulating composite layer with an excellent electric insulating property is additionally arranged between the cable conductor and the metal jacket and is made of nanometer modified epoxy resin and other components such as methyl tetrahydrophthalic anhydride and Qishi toughening agents by means of compounding, and accordingly the temperature-resistant and pressure-resistant performance, the mechanical strength and the insulating property of the submarine power cable can be greatly improved under synergistic effects of the nanometer modified epoxy resin and the other components.

Description

technical field [0001] The invention relates to the technical field of a submarine power cable, in particular to a submarine power cable with an insulating composite material layer. Background technique [0002] Submarine cables are cables laid on the seabed and underwater in rivers, and are divided into submarine communication cables and submarine power cables. Submarine communication cables are mainly used for communication services, which are expensive, but have a high degree of confidentiality. Submarine power cables are mainly used to transmit high-power electric energy underwater, which has the same function as underground power cables, but the application occasions and laying methods are different. [0003] The entire manufacturing process of the submarine power cable is basically the same as that of the general power cable, but there are special requirements on the mechanical strength and anti-corrosion of the cable, and the length of the cable is required to be ext...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/14H01B7/02H01B7/18H01B7/28H01B7/22H01B9/02
Inventor 朱伟张杰付聪陈万田郑永文郑海山
Owner STATE GRID CORP OF CHINA
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