CN105513706A - Fiber composite core wire for transmission line - Google Patents

Abstract

The invention belongs to the field of electric power technology, and discloses a fiber composite core wire for a transmission line. The fiber composite core wire comprises a wire core and a conductor wound on the wire core. The wire core is prepared by raw materials including 10 parts by weight of ethanol, 5 parts by weight of phenol resin, 3 parts by weight of polyvinyl alcohol, 12 parts by weight of melamine, 1 part by weight of glass fiber, 1 part by weight of silicon carbide, 15 parts by weight of 37% (v/v) formaldehyde aqueous solution, 2 parts by weight of graphene oxide, 2 parts by weight of trifluoroethyl methacrylate, 0.8 part by weight of polyacrylonitrile, 0.2 part by weight of dimethyl formamide, 2 parts by weight of poly-ethylene oxide and 0.1 part by weight of citric acid. The invention has a good wire thermal conductivity coefficient and good mechanical properties.

Description

A kind of fiber composite core conductive wire for power transmission line

Technical field

The invention belongs to technical field of electric power, be specifically related to a kind of fiber composite core conductive wire for power transmission line.

Background technology

In national intelligent grid, power transmission and distribution adopts aluminium twisted wire with carbon fiber composite core usually, and it has following advantage: (1) ampacity is conventional steel core aluminum stranded wire twice, is not carrying out can again setting up new line in transformation bar, tower situation; (2) the aluminum conductor sectional area ratio steel reinforced aluminium conductor many 29% in aluminium twisted wire with carbon fiber composite core; (3) can effectively run under 200 DEG C of high temperature, and the serviceability temperature of conventional steel core aluminum stranded wire is 100 DEG C; (4) in fact eliminate sag, the long-term creep not by aluminium affects; (5) conventional installation methods, instrument and gold utensil is used, without the need to special tool(s) or Special Training; (6) by using less bar, tower, construction cost is reduced.Because intensity is high, the span between bar, tower can be strengthened, reduce by bar, the tower of more than 20%; (7) resistance to ecological deterioration performance is good.Non-corrosive, does not corrode, and does not produce electrolysis with aluminum conductor or other parts and reacts, can recycle; (8) higher operational efficiency contributes to reducing operating cost, can meet transmission standard; (9) under identical traffic capacity, line loss reduces 29%, can reduce generate output, energy savings cost.

But, because current electrical power distribution carbon fiber composite core wire lacks the effective on-line monitoring of wire operational system, after conductor laying runs, substantially be in without supervision or supervise state not in time, just go after only breaking down to electrical power trans mission/distribution system to pay close attention to, cause electric network fault rate higher, also have, because the load capacity of wire is calculated all in theory, there is larger remaining, there is certain waste, economically set out, ensure when being no more than the allowable temperature of wire in the urgent need to taking measures, maximally play the transmittability of wire, to obtain larger economy effect.Chinese patent literature CN101673599A discloses " composite material of a kind of grating belt optical fiber for cable and preparation method thereof " discloses a kind of composite material can monitoring the stressed of wire and temperature regime in real time, this composite material comprises fiber material and resin, fiber material is the composite fibre material of at least one in carbon fiber and glass fibre, superhigh molecular weight polyethylene fibers, basalt fibre or aramid fiber, arranges at least one grating fibers along its length in fiber material inside.The cable of this grating belt optical fiber can monitor force-bearing situation and the temperature regime of wire in real time, carries out Real-Time Monitoring to the long journey situation of transport modified line.But fibre diameter is less, strength ratio is lower, therefore solves the low technical problem of the low wire intensity caused of fiber strength in the urgent need to a kind of carbon fiber composite core wire.

Summary of the invention

It is high that the object of inventing is to provide a kind of intensity, the carbon fiber composite core wire that transmittability is good.

The present invention is realized by following scheme:

A kind of fiber composite core conductive wire for power transmission line, comprises core and is wrapped in the conductor on core, it is characterized in that: described core is prepared as follows and obtains:

Take following each raw material according to weight portion: ethanol 10 parts, 5 parts, phenolic resins, polyvinyl alcohol 3 parts, melamine 12 parts, 1 part, glass fibre, 1 part, carborundum, 37%(v/v) formalin 15 parts, graphene oxide 2 parts, trifluoroethyl methacrylate 2 parts, polyacrylonitrile 0.8 part, dimethyl formamide 0.2 part, polyethylene glycol oxide 2 parts, citric acid 0.1 part.

Above-mentioned raw materials is added in container successively, at room temperature mixing and stirring, then put into vacuum drying chamber de-bubbled 30min; Vacuum bag pressure method said mixture is adopted to infiltrate carbon fiber, then constant temperature 1h under 85 DEG C of environment, then constant temperature 2h under 110 DEG C of environment, finally under 140 DEG C of environment, the curing process of constant temperature 2h is cured, obtain the resin carbon fibre composite material that fiber content is 54 ~ 62%, finally prune, polishing, cut into regulation batten shape, to obtain final product.

Embodiment

Technical scheme in the application is understood better in order to make those skilled in the art person, below in conjunction with the application's specific embodiment, carry out clearly, intactly describing to the present invention, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.

Embodiment 1

A kind of fiber composite core conductive wire for power transmission line, comprise core and be wrapped in the conductor on core, described core is prepared as follows and obtains:

Take following each raw material according to weight portion: ethanol 10 parts, 5 parts, phenolic resins, polyvinyl alcohol 3 parts, melamine 12 parts, 1 part, glass fibre, 1 part, carborundum, 37%(v/v) formalin 15 parts, graphene oxide 2 parts, trifluoroethyl methacrylate 2 parts, polyacrylonitrile 0.8 part, dimethyl formamide 0.2 part, polyethylene glycol oxide 2 parts, citric acid 0.1 part.

Above-mentioned raw materials is added in container successively, at room temperature mixing and stirring, then put into vacuum drying chamber de-bubbled 30min; Vacuum bag pressure method said mixture is adopted to infiltrate carbon fiber, then constant temperature 1h under 85 DEG C of environment, then constant temperature 2h under 110 DEG C of environment, finally under 140 DEG C of environment, the curing process of constant temperature 2h is cured, obtain the resin carbon fibre composite material that fiber content is 54 ~ 62%, finally prune, polishing, cut into regulation batten shape, to obtain final product.

After tested, conductive coefficient is 0.38W/ (m.K), bending strength 102MPa, water absorption rate < 0.1% to this embodiment sample.

More than in conjunction with concrete execution mode, invention has been described, but it will be apparent to those skilled in the art that these descriptions are all exemplary, is not limiting the scope of the invention.Those skilled in the art can make various variants and modifications according to spirit of the present invention and principle to the present invention, and these variants and modifications also within the scope of the invention.

Claims (2)

1. a fiber composite core conductive wire for power transmission line, comprises core and is wrapped in the conductor on core, and described core is prepared by the raw material of following weight portion and obtains:

Ethanol 10 parts, 5 parts, phenolic resins, polyvinyl alcohol 3 parts, melamine 12 parts, 1 part, glass fibre, 1 part, carborundum, 37%(v/v) formalin 15 parts, graphene oxide 2 parts, trifluoroethyl methacrylate 2 parts, polyacrylonitrile 0.8 part, dimethyl formamide 0.2 part, polyethylene glycol oxide 2 parts, citric acid 0.1 part.

2. wire according to claim 1, is characterized in that, the preparation method of described wire is as follows:

Above-mentioned raw materials is added in container successively, at room temperature mixing and stirring, then put into vacuum drying chamber de-bubbled 30min; Vacuum bag pressure method said mixture is adopted to infiltrate carbon fiber, then constant temperature 1h under 85 DEG C of environment, then constant temperature 2h under 110 DEG C of environment, finally under 140 DEG C of environment, the curing process of constant temperature 2h is cured, obtain the resin carbon fibre composite material that fiber content is 54 ~ 62%, finally prune, polishing, cut into regulation batten shape, to obtain final product.