CN209591640U - A kind of water-resistance electric power cable used for wind power generation - Google Patents

Abstract

The utility model discloses a kind of water-resistance electric power cable used for wind power generation, including cable core, the cable core is twisted by multiple waterproofing type insulated wire cores；Fill the non-conductive glue that blocks water in the cable core gap, the wrapped compound high semi-conductive insulation shield layer of graphene outside cable core, in the compound high semi-conductive insulation shield layer outer cladding non-woven fabrics separation layer of graphene, the wrapped semiconductor waterstop outside non-woven fabrics separation layer, the wrapped aramid fiber layer outside semiconductor waterstop, wrapped buffering hinders electric waterstop outside aramid fiber layer, it is hindered in buffering and extrudes aluminium-plastic tape polyethylene bonding waterproof separation sleeve outside electric waterstop, aluminium strip armor is woven outside aluminium-plastic tape polyethylene bonding waterproof separation sleeve, it is wrapped outside braiding aluminium strip armor to delay swollen bed course, nitrile rubber oversheath is extruded outside moisture absorption bed course.The utility model has the performances such as waterproof, oil resistivity is fabulous, wearability is higher, heat resistance is preferable, ageing-resistant, Wind-Pressure Resistance.

Description

A kind of water-resistance electric power cable used for wind power generation

Technical field

The utility model belongs to power cable field, specifically a kind of water-resistance electric power cable used for wind power generation.

Background technique

In today of global energy growing tension, demand of the country to renewable energy is continuously increased, therefore as wind-force The low-temperature wind-energy power cable of generating equipment auxiliary products is becoming the cable new varieties for having huge market potential, and exploitation is simultaneously Invest market.Low-temperature wind-energy power cable is widely used in the connection of wind power generation machine rotor or for the inside and outside non-moving power supply of tower Connection etc., solve the hidden danger of equipment safety operation, have updated environmental benefit, bring economic benefit.Existing low temperature wind energy The shortcomings that power cable are as follows: insulation, sheath are easy cracking and cause short circuit when being lower than -55 DEG C, influence equipment normal use；Separately What outside, when encountering ten strong wind, easily snap off.

Sheath material used in general cable is polyvinyl chloride, and polyvinyl chloride molecule is polar, polar hydrone Easily invade in cable through polyvinyl chloride layer, realizing the longitudinal water-blocking of cable at present, technically there is no problem, As long as in sheath plus what one layer of watertight material was constituted blocks water once.The method generallyd use at present is outside polyvinyl chloride One layer of aluminium-plastic tape of one layer of middle-high density polyvinyl chloride inner sheath or longitudinal wrap is extruded in sheath as longitudinal water-blocking separation sleeve.

In general, moisture is immersed in conductor and the insulation that rear main influence in cable is cable；For conductor, cable A thermal steady state is in when operating normally, conductor temperature is generally all 60 or more, if there is moisture immersion will lead to Conductor indium increases transmission line of electricity so that the energy loss resistance between conductor single line increases to increase conductor resistance Energy loss, for insulation, although polyethylene is extremely difficult to be dissolved in the nonpolar hydrophobic substance of water, polyethylene be it is a kind of by The Piezoelectricity of crystalline phase and amorphous phase composition.Polyethylene phase structure is close, but crystal boundary existing defects；In amorphous phase Molecules align it is loose；It is intermolecular that there are biggish gaps；Hydrone is polar, extension and electric field force under alternating electric field Collective effect make hydrone be easy to penetrate into the allowance of polyethylene amorphous phase and the grain boundary defects of crystal phase, be crosslinked poly- second There is also the above problems in alkene molecular structure, while having more cross-linking by-products to serve as impurity in crosslinked polyethylene, thus hand over Connection polyethylene also has biggish water absorption rate under alternating electric field；Water tree, which can be generated, after crosslinked polyethylene and polyethylene insulation water suction makes Running cable is obtained breakdown occurs and damages.Block water changing for crosslinked polyethylene and polyethylene insulation so lacking now Into power cable for wind power generation.

Existing cable conductor is twisted by stranded conductor, it easily forms air gap between insulating layer, and conductive surface is not It is smooth, it will cause electric field concentration, when cable is in non-uniform electric field, noise voltage can be induced, circuit is formed and is interfered, increase It is powered on the loss of cable internal transmission electricity, generates external electromagnetic radiation pollution.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of water-resistance electric power cables used for wind power generation.

A kind of water-resistance electric power cable used for wind power generation described in the utility model, including cable core, the cable core is by more A waterproofing type insulated wire cores are twisted；Fill the non-conductive glue that blocks water, the wrapped graphene outside cable core in the cable core gap Compound high semi-conductive insulation shield layer, in the compound high semi-conductive insulation shield layer outer cladding non-woven fabrics separation layer of graphene, in nothing Wrapped semiconductor waterstop outside woven fabric separation layer, the wrapped aramid fiber layer outside semiconductor waterstop, outside aramid fiber layer around Packet buffering hinders electric waterstop, hinders in buffering and extrudes aluminium-plastic tape polyethylene bonding waterproof separation sleeve outside electric waterstop, in plastic-aluminum Aluminium strip armor is woven outside composite band polyethylene bonding waterproof separation sleeve, it is wrapped outside braiding aluminium strip armor to delay swollen bed course, In Nitrile rubber oversheath is extruded outside moisture absorption bed course.

Be further improved, the waterproofing type insulated wire cores by insulated wire cores and outside insulated wire cores wrapped water blocking yarn and At.

It is further improved, the insulated wire cores are extruded in the graphite outside aluminium alloy conductor by aluminium alloy conductor and successively The compound high semiconductive conductor shield of alkene, polyethylene layer are constituted.

It is further improved, the insulated wire cores are by wire and the polyethylene layer being extruded in outside aluminium alloy conductor It constitutes.

It is further improved, the wire includes cylindric magnesium alloy bar, oxygen-free copper layer and anti-oxidant conductive coating, institute The outer longitudinal wrap oxygen-free copper layer of the cylindric magnesium alloy bar stated constitutes microalloy copper-clad magnesium prefabricated rods, and the microalloy copper-clad magnesium is prefabricated One layer of anti-oxidant conductive coating is coated with outside stick.

It is further improved, the anti-oxidant conductive coating is anti-oxidant highly conductive high-temperature resistant nano coating.

It is further improved, the oxygen-free copper layer is oxygen-free copper material of the purity up to 99.99%.

It is further improved, described delays swollen bed course for water suction non-woven fabrics or the band that blocks water.

The utility model has the beneficial effects that:

Compared with prior art, the conductor uses novel wire, has highly conductive, anti-oxidant, stretching resistance performance； Since existing cable conductor is twisted by stranded conductor, it easily forms air gap between insulating layer, and conductive surface is rough, meeting Electric field is caused to concentrate, the utility model uses the compound high semiconductive conductor shield of graphene, can improve electric quantity loss and electricity On the other hand magnetic radiation pollution can also be effectively prevented external electromagnetic environment and generate interference to signal in cable, guarantee transmission Quality；Entire cable is equipped with the different stop water of multilayer from inside to outside, so that the block-water performance of cable reaches extremely excellent；Adding Upper nitrile rubber oversheath, so that the oil resistivity of cable is fabulous, wearability is higher, and heat resistance is preferable, and bonding force is strong.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model embodiment 1；

Fig. 2 is the structural schematic diagram of the utility model embodiment 2.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

Embodiment 1:

As shown in Figure 1, a kind of water-resistance electric power cable used for wind power generation described in the utility model, including cable core, it is described Cable core be twisted by multiple waterproofing type insulated wire cores；The waterproofing type insulated wire cores are by insulated wire cores and in insulated wire Wrapped water blocking yarn forms outside core, and the insulated wire cores are extruded in the stone outside aluminium alloy conductor by aluminium alloy conductor 1 and successively The compound high semiconductive conductor shield 2 of black alkene, polyethylene layer 3 are constituted；The cable core gap filling is non-conductive to block water Glue 4 is the sticky state of paste under room temperature, can effectively be filled into the gap of cable, fill up the gap between core, water completely Close property is fabulous；The wrapped compound high semi-conductive insulation shield layer 5 of graphene, substantially reduces the usage amount of carbon black outside cable core, solves Material toughness itself is low and shows rough problem, and the compound high semiconductive conductor shielding material use graphene of graphene is good Good electric conductivity, thermal conductivity and high specific surface area；It greatly reduces the volume resistivity of out semiconductor layer in cable The thermal stability for improving shielded layer improves shielded layer to the homo-effect of electric field, reduces and be likely to occur in cable operation Partial discharge phenomenon, and improve the service life of cable；

In the compound high semi-conductive insulation shield layer outer cladding non-woven fabrics separation layer 6 of graphene, outside non-woven fabrics separation layer around Packet semiconductor waterstop 7, the wrapped aramid fiber layer 8 outside semiconductor waterstop, wrapped buffering hinders resistance outside aramid fiber layer Water band 9 so that cable have hygroscopicity is strong, expansion rate is big, expansion rate is fast, can effectively buffer, weaken electric field strength can be effective Cable insulation and metal layer are buffered, prevents damage from insulating；Longitudinal wrap aluminium-plastic tape polyethylene bonding outside electric waterstop is hindered in buffering Waterproof separation sleeve 10, so that cable realizes radial water-resisting, water tightness is than single high several hundred or even thousands of times of polyethylene；It is moulding Aluminium strip armor 11 is woven outside composite band polyethylene bonding waterproof separation sleeve, is used multilayer stop water from inside to outside, is increased The group of strong cable is aqueous；Delay swollen bed course 12, example with preferably elastic and water suction for wrapped one layer outside braiding aluminium strip armor Such as there is the water suction non-woven fabrics of certain elasticity or the band that blocks water, avoid factor is thermally expanded in cable operation and to cable bring It influences；Nitrile rubber oversheath 13 is extruded outside swollen bed course delaying, so that the oil resistivity of cable is fabulous, wearability is higher, heat resistance Preferably, bonding force is strong.

Embodiment 2:

As shown in Fig. 2, difference from Example 1 is: the insulated wire cores are by wire and are extruded in metal Polyethylene layer 3 outside silk is constituted, and the wire includes cylindric magnesium alloy bar 21, oxygen-free copper layer 22 and anti-oxidant leads Electrocoat 23, the outer longitudinal wrap oxygen-free copper layer of the cylindric magnesium alloy bar constitute microalloy copper-clad magnesium prefabricated rods, micro- conjunction One layer of anti-oxidant conductive coating is coated with outside golden copper-clad magnesium prefabricated rods；The anti-oxidant conductive coating is anti-oxidant highly conductive resistance to height Warm nano coating, the coating molecule be once coated in fine copper surface i.e. with fine copper molecule occur chemical reaction formed it is highly conductive anti-oxidant Substance, manufacture be easy, at low cost, service performance is good, have anti-oxidant, stretching resistance performance, substantially increase the wind energy The intensity of cable conductor, inoxidizability, so that the longer life expectancy of cable.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art It for art personnel, without departing from the principle of this utility model, can also make several improvements, these improvement also should be regarded as The protection scope of the utility model.

Claims (8)

1. a kind of water-resistance electric power cable used for wind power generation, including cable core, it is characterised in that: the cable core is by multiple waterproofing types Insulated wire cores are twisted；The non-conductive glue that blocks water is filled in the cable core gap, and wrapped graphene is compound high by half outside cable core Conductive insulation screen is isolated in the compound high semi-conductive insulation shield layer outer cladding non-woven fabrics separation layer of graphene in non-woven fabrics The outer wrapped semiconductor waterstop of layer, the wrapped aramid fiber layer outside semiconductor waterstop, the wrapped buffering resistance outside aramid fiber layer Electric waterstop hinders in buffering and extrudes aluminium-plastic tape polyethylene bonding waterproof separation sleeve outside electric waterstop, poly- in aluminium-plastic tape Ethylene, which bonds, weaves aluminium strip armor outside waterproof separation sleeve, wrapped outside braiding aluminium strip armor to delay swollen bed course, in moisture absorption bed course Nitrile rubber oversheath is extruded outside.

2. the water-resistance electric power cable used for wind power generation according to claim 1, it is characterised in that: the waterproofing type is exhausted By insulated wire cores and outside insulated wire cores, wrapped water blocking yarn forms edge core.

3. water-resistance electric power cable used for wind power generation according to claim 2, it is characterised in that: the insulated wire cores The compound high semiconductive conductor shield of graphene, the polyethylene by aluminium alloy conductor and being successively extruded in outside aluminium alloy conductor are exhausted Edge layer is constituted.

4. water-resistance electric power cable used for wind power generation according to claim 2, it is characterised in that: the insulated wire cores It is made of wire and the polyethylene layer being extruded in outside wire.

5. water-resistance electric power cable used for wind power generation according to claim 4, it is characterised in that: the wire packet Include cylindric magnesium alloy bar, oxygen-free copper layer and anti-oxidant conductive coating, the outer longitudinal wrap oxygen-free copper layer of the cylindric magnesium alloy bar Microalloy copper-clad magnesium prefabricated rods are constituted, one layer of anti-oxidant conductive coating is coated with outside the microalloy copper-clad magnesium prefabricated rods.

6. the water-resistance electric power cable used for wind power generation according to claim 5, it is characterised in that: described anti-oxidant to lead Electrocoat is anti-oxidant highly conductive high-temperature resistant nano coating.

7. the water-resistance electric power cable used for wind power generation according to claim 5, it is characterised in that: the oxygen-free copper layer The oxygen-free copper material for being purity up to 99.99%.

8. the water-resistance electric power cable used for wind power generation according to claim 1, it is characterised in that: described delays swollen bed course For non-woven fabrics or the band that blocks water of absorbing water.