CN209515298U

CN209515298U - A kind of energy-efficient intrinsic safety midium voltage cable used for intelligent electric network

Info

Publication number: CN209515298U
Application number: CN201920615645.4U
Authority: CN
Inventors: 夏涛; 袁宗民; 徐广宇
Original assignee: Jiangsu Yujiu Cable Technology Co Ltd
Current assignee: Jiangsu Yujiu Cable Technology Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2019-10-18
Anticipated expiration: 2029-04-30

Abstract

The utility model discloses a kind of energy-efficient intrinsic safety midium voltage cables used for intelligent electric network, including cable core, the cable core is twisted by a plurality of insulated core, in the gap of cable core filling non-hygroscopic flame-retardant rope, simultaneously the wrapped non-hygroscopic inhibiting tape of left-hand is tightened, inner sheath is extruded outside cable core, the tin-coated steel band armor that the wrapped two layers of thickness of left-hand is 0.5mm outside inner sheath, in tin-coated steel with the TPE polymer oversheath extruded outside armor with a thickness of 2.5mm；The utility model structure is compared with traditional electric wire, and unit length consumptive material at least reduces 3%, and linear mass at least reduces 5%, saves 8% or more labour, reasonable in design, product cost greatly improves, and economizes on resources, and brings benefit to the people.

Description

A kind of energy-efficient intrinsic safety midium voltage cable used for intelligent electric network

Technical field

It is specifically a kind of to be used in country the utility model relates to a kind of energy-efficient intrinsic safety midium voltage cable used for intelligent electric network The energy-efficient of power grid, petrochemical industry, mine, building etc. subtracts consumption, route Contrast tuned imaging, essential safety, greasy dirt soda acid etc. Energy-efficient intrinsic safety midium voltage cable used for intelligent electric network in various adverse circumstances, is widely used in low-voltage power supply system.

Background technique

It is twisted that traditional medium-pressure power cable conductor is that round copper monofilament presses, and conductor line loss is big, and consumptive material, not high-strength Degree alloy wire and trapezoidal anisotropic combination of monofilaments press the composite efficient energy-saving being twisted and subtract consumption conductor；It is inside and outside to be shielding for common stone Ink powder conductivity type material, volume resistivity is big, thermal stability is poor, and the homogenizing of electric field is uneven, and shield effectiveness is poor, in cable operation Again and again the partial discharge phenomenon occurred, safety and reliability are low；Insulation is vinyl chemistry cross-linked material, and dielectric strength is low, Anti-aging, resistance to brittleness can be poor；High-intensitive temperature-sensitive multimode fibre is not designed, route operation conditions is known nothing, whole route The essential safety of operation exists many uncertain.Oversheath is pvc material, poor flexibility, not antiacid alkali, hydrolysis, intolerant to Greasy dirt, the performances such as ageing-resistant, resistance to sunshine are poor, are used in various adverse circumstances, and cable unit length consumptive material is big, at high cost, property Than low, technology falls behind valence, lavishes labor on.

Traditional power cable production technology process has the following problems: 1) conductor processing technology falls behind, and does not design Heart high-strength alloy copper wire and height lead trapezoidal special-shaped copper combination of monofilaments and press twisted composite conductor；2) inside and outside to be shielding for common stone Ink powder conductivity type material, volume resistivity is big, thermal stability is poor, and the homogenizing of electric field is uneven, and shield effectiveness is poor, in cable operation Again and again the partial discharge phenomenon occurred, safety and reliability are low；3) traditional midium voltage cable does not design high-intensitive temperature-sensitive multimode Optical fiber knows nothing route operation conditions, and the essential safety of whole route operation exists many uncertain.4) piezoelectricity in tradition Cable oversheath is pvc material, and poor flexibility, not antiacid alkali, hydrolysis, intolerant to greasy dirt, the performances such as ageing-resistant, resistance to sunshine are poor 5) Traditional midium voltage cable unit length consumptive material is big, and at high cost, cost performance is low, wastes national resources and social labor power.

Utility model content

Purpose of utility model: the purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of intelligence electricity The energy-efficient intrinsic safety midium voltage cable of net.

Technical solution: in order to solve above-mentioned purpose, piezoelectricity in a kind of energy-efficient intrinsic safety used for intelligent electric network of the utility model Cable, including cable core, the cable core are twisted by a plurality of insulated core, fill non-hygroscopic flame-retardant rope in the gap of cable core And the wrapped non-hygroscopic inhibiting tape of left-hand tightens, and inner sheath is extruded outside cable core, the wrapped two layers of thickness of left-hand is outside inner sheath The tin-coated steel band armor of 0.5mm, extrudes TPE polymer oversheath outside tin-coated steel band armor；The insulated wire cores by Compacting pressing composite conductor and the compound semiconductive internal shield of the three-layer co-extruded graphene outside compacting pressing composite conductor, crosslinking The compound semiconductives external shielding layer of polyethylene layer, graphene is constituted；Wrapped copper strip shielding layer outside the insulated wire cores, and High-intensitive temperature-sensitive multimode fibre is embedded in copper strip shielding layer.

It is further improved, the compacting pressing composite conductor by one, center diameter is 2.54mm, section 95mm²Height The height that totally 18 diameters are 2.54mm of strength alloys copper wire and two layers, which is led trapezoidal special-shaped copper combination of monofilaments and pressed, to be twisted, this is tight The outer diameter of die mould composite conductor is 11.3mm.

It is further improved, the inner sheath includes thermoplastic elastomer (TPE) internal layer and thermoplastic elastic volume surrounding, the heat Several air bags are provided between thermoplastic elastic internal layer and thermoplastic elastic volume surrounding；It can effectively buffer from the external world Pressure protects each layer of cable by extraneous extruding, not protect cable to be unlikely to deform well, also ensure cable well Rounding property.

Be further improved, the compound semiconductive internal shield of the graphene with a thickness of 0.8mm.

Be further improved, the crosslinked polyetylene insulated layer with a thickness of 4.5mm.

Be further improved, the compound semiconductives external shielding layer of the graphene with a thickness of 0.8mm.

The utility model has the advantages that compared with prior art, the utility model has the advantages that:

1, trapezoidal special-shaped copper combination of monofilaments is led by central high intensity alloy copper wire and height using sophisticated technologies technology, that is, conductor Press and be twisted composite conductor, central high intensity alloy copper wire substantially increases the tensile strength of cable body, and height is led trapezoidal Special-shaped copper monofilament presses twisted, and conductor compacting coefficient reaches 94% or more, and conductive surface effectively transmits area and increases by 6% or more, And then the skin effect of strengthening electric current transmission, so that conductor current bearing capacity is at least improved 4% or more, meets requirements of the national standard While, 2.5% or more conductor unit weight savings.

2, conductive surface and surface of insulating layer extrude the compound semiconductive shielding layer of low resistance thermostabilization graphene, drop significantly The volume resistivity of out semiconductor layer in low cable improves its thermal stability, improves shielded layer to the homo-effect of electric field, The partial discharge phenomenon being likely to occur in cable operation is effectively reduced, the safety and reliability of power circuit operation is ensured, mentions High cable service life.

3, insulating layer uses modified form processes for chemically crosslinked polyethylene material, and dielectric strength is high, and anti-aging, resistance to brittleness can be good, Substantially increase the service life and safety in utilization of cable

4, the metallic copper band shielded layer of every phase insulated wire cores is embedded with high-intensitive temperature-sensitive multimode fibre, high-intensitive temperature-sensitive multimode Optical fiber is red, yellow, and green, not only acts as alternate color separation effect, also real time monitoring route operation conditions, and route is run and is believed Breath is real-time transmitted to endpoint detection system, it is ensured that the essential safety of whole route operation.

5, jacket material is synthesis TPE polymer, has a high resiliency, antiacid alkali, hydrolysis, resistance to greasy dirt, ageing-resistant, resistance to The characteristics such as sunshine are used in various adverse circumstances, and tensile strength is big, very soft, enhances the softness of cable, full It foot large span and is used toward the mobile environment of renaturation.

6, the novel intelligent power grid is with energy-efficient intrinsic safety midium voltage cable compared with traditional electric wire, and unit length consumptive material is extremely 3% is reduced less, and linear mass at least reduces 5%, saves 8% or more labour, reasonable in design, product cost is significantly It improves, economizes on resources, bring benefit to the people.

Detailed description of the invention

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

Fig. 2 is the structural schematic diagram of the utility model inner sheath.

Specific embodiment

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

As shown in Figure 1, a kind of energy-efficient intrinsic safety midium voltage cable used for intelligent electric network, including cable core, the cable core is by more Root insulated wire cores are twisted, and the insulated wire cores are by compacting pressing composite conductor and three-layer co-extruded in compacting pressing composite conductor Outside with a thickness of the compound semiconductive internal shield 3 of the graphene of 0.8mm, the crosslinked polyetylene insulated layer 4 with a thickness of 4.5mm, thickness The compound semiconductives external shielding layer 5 of graphene that degree is 0.8mm is constituted, and substantially reduces the volume of out semiconductor layer in cable Resistivity improves its thermal stability, improve shielded layer to the homo-effect of electric field, effectively reduces and is likely to occur in cable operation Partial discharge phenomenon ensures the safety and reliability of power circuit operation, improves cable service life；The insulated wire cores Outer wrapped copper strip shielding layer 6, and high-intensitive temperature-sensitive multimode fibre 7, high-intensitive temperature-sensitive multimode fibre are embedded in copper strip shielding layer For red, yellow, and green, alternate color separation effect, also real time monitoring route operation conditions are not only acted as, and route operation information is real When be transferred to endpoint detection system, it is ensured that the essential safety of whole route operation；

The compacting pressing composite conductor by one, center diameter is 2.54mm, section 95mm²High-strength alloy copper Silk and two layers of height that totally 18 diameters are 2.54mm, which are led trapezoidal special-shaped copper combination of monofilaments and pressed, to be twisted, the compacting pressing composite guide The outer diameter of body is 11.3mm, and central high intensity alloy copper wire substantially increases the tensile strength of cable body, trapezoidal abnormal shape copper list Silk presses twisted, and conductor compacting coefficient reaches 94% or more, and conductive surface effectively transmit area and increases by 6% or more, and then enhancing The streamed skin effect of electricity, makes conductor current bearing capacity at least improve 4% or more, while meeting requirements of the national standard, 2.5% or more conductor unit weight savings；

In the gap of cable core filling non-hygroscopic flame-retardant rope 8, simultaneously the wrapped non-hygroscopic inhibiting tape 12 of left-hand is tightened, and is played Point of origin is low, good flame retardation effect, is not easy to light, and leaving fire source can go out certainly, and have water-proof function, reaches permanent fire retardant effect； Inner sheath 9 is extruded outside cable core, the tin-coated steel band armor 10 that the wrapped two layers of thickness of left-hand is 0.5mm outside inner sheath is plating The TPE polymer oversheath 11 with a thickness of 2.5mm is extruded outside tin steel-tape armouring layer, so that cable has high resiliency, antiacid alkali, water Solution, the characteristics such as resistance to greasy dirt, ageing-resistant, resistance to sunshine, is used in various adverse circumstances, and tensile strength is big, very soft, enhancing The softness of cable meets large span and uses toward the mobile environment of renaturation.

As shown in Fig. 2, the inner sheath includes thermoplastic elastomer (TPE) internal layer 91 and thermoplastic elastic volume surrounding 92, it is described It is provided with several air bags 93 between thermoplastic elastomer (TPE) internal layer and thermoplastic elastic volume surrounding, can effectively buffer from outer The pressure on boundary protects each layer of cable by extraneous extruding, not protect cable to be unlikely to deform well, also ensure electricity well The rounding property of cable.

The novel intelligent power grid is with energy-efficient intrinsic safety midium voltage cable compared with traditional electric wire, and unit length consumptive material is at least 3% is reduced, linear mass at least reduces 5%, saves 8% or more labour, reasonable in design, product cost mentions significantly Height economizes on resources, and brings benefit to the people.

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

1. a kind of energy-efficient intrinsic safety midium voltage cable used for intelligent electric network, it is characterised in that: including cable core, the cable core is by more Insulated wire cores are twisted, filling non-hygroscopic flame-retardant rope and the wrapped non-hygroscopic inhibiting tape bundle of left-hand in the gap of cable core Tightly, inner sheath is extruded outside cable core, the tin-coated steel band armor that the wrapped two layers of thickness of left-hand is 0.5mm outside inner sheath is plating The TPE polymer oversheath with a thickness of 2.5mm is extruded outside tin steel-tape armouring layer；The insulated wire cores are by compacting pressing composite conductor And the compound semiconductive internal shield of the three-layer co-extruded graphene outside compacting pressing composite conductor, crosslinked polyetylene insulated layer, The compound semiconductives external shielding layer of graphene is constituted；Wrapped copper strip shielding layer outside the insulated wire cores, and in copper strip shielding layer It is embedded in high-intensitive temperature-sensitive multimode fibre.

2. energy-efficient intrinsic safety midium voltage cable used for intelligent electric network according to claim 1, it is characterised in that: described presses Type composite conductor by one, center diameter is 2.54mm, section 95mm²High-strength alloy copper wire and two layers of totally 18 diameter It leads trapezoidal special-shaped copper combination of monofilaments for the height of 2.54mm and presses and be twisted, the outer diameter of the compacting pressing composite conductor is 11.3mm.

3. energy-efficient intrinsic safety midium voltage cable used for intelligent electric network according to claim 2, it is characterised in that: the interior shield Set includes thermoplastic elastomer (TPE) internal layer and thermoplastic elastic volume surrounding, and the thermoplastic elastomer (TPE) internal layer and thermoplastic elastic are external Several air bags are provided between layer.

4. energy-efficient intrinsic safety midium voltage cable used for intelligent electric network according to claim 1, it is characterised in that: the graphite The compound semiconductive internal shield of alkene with a thickness of 0.8mm.

5. energy-efficient intrinsic safety midium voltage cable used for intelligent electric network according to claim 1, it is characterised in that: the crosslinking Polyethylene layer with a thickness of 4.5mm.

6. energy-efficient intrinsic safety midium voltage cable used for intelligent electric network according to claim 1, it is characterised in that: the graphite The compound semiconductives external shielding layer of alkene with a thickness of 0.8mm.