Plated conductor cable

Abstract

The utility model discloses a coated conductor cable. A main line structurally comprises a coated conductor, an insulating layer and an inner protective layer from inside to outside in sequence; the coating conductor is formed by stranding coating monofilaments, and the coating monofilaments are copper monofilaments plated with a graphene nano-silver composite coating; and the thickness of the plating layer is 18-22 microns. The coated conductor is reasonable in structural design, and has the following beneficial effects that the graphene nano-silver composite coating in the coated conductor can effectively prevent oxygen and moisture from being contacted with the conductor, so that the oxidation resistance of the conductor in a high-temperature environment is improved, the phenomena of yellowing, purple and discoloration due to oxidation are prevented, and the service life of the conductor is prolonged. Meanwhile, the generation of oxidation spots is inhibited in a humid environment. And the volume resistivity of the monofilament can be effectively improved, the resistance of the cable is reduced, the electric energy loss is reduced, the power transmission efficiency of the cable is improved, the volume resistivity of the monofilament after coating is reduced by 3.1%, the conductivity is greatly improved, and the material consumption is saved by 1-2%.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field especially relates to a cladding conductor cable. BACKGROUND

[0002] Power cable is used for transmission and distribution of electric energy cable, power cable is often used in urban underground power network, power station outgoing line, industrial and mining enterprise internal power supply and cross river and sea underwater power transmission line.

[0003] At present, in the process of cable use, conductor often appears various problems because of environmental factors. For example, in high temperature environment, conductor is easy to oxidize yellow, purple discoloration, not only affect the appearance, more can lead to the performance of conductor, resistance increases, the increase of electric energy loss. In humid environment, the surface of conductor is easy to produce oxidation spot, serious time can cause local corrosion, shorten the service life of cable, even cause safety accident. Meanwhile, the volume resistivity of the existing cable monofilament is also difficult to meet some higher requirements of low resistance application scene. It has important practical significance to develop a kind of cable that can effectively improve the oxidation resistance of conductor and improve the performance of monofilament. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of cladding conductor cables, effectively improve the oxidation resistance of conductor, avoid the problems such as oxidation discoloration, spot generation of conductor in high temperature and humid environment, and improve monofilament volume resistivity, improve monofilament appearance, to prolong the service life of cable, improve the overall performance of cable.

[0005] In order to realize the above-mentioned purpose, the technical scheme of the utility model provides a kind of cladding conductor cable, including cable core and the outer sheath wrapped in the outer surface of the cable core, the cable core includes several main lines, and the several main lines are stranded into cable core, and the interstice between the several main lines in the cable core is provided with filler;The structure of the main line is in turn cladding conductor, insulating layer, inner protective layer from inside to outside;The cladding conductor is stranded by cladding monofilament, and the cladding monofilament is copper monofilament plated with graphene nanometer silver composite cladding layer;The cladding thickness is 18-22 μm.

[0006] Further, the number of the main line is 3, and the cladding thickness is 20 μm.

[0007] Further, the cladding conductor structure is stranded by round monofilament or profiled wire monofilament, or round monofilament and profiled wire monofilament are stranded together.

[0008] Further, the insulating layer is a mineral insulating layer, and the mineral insulating layer is a mica tape layer; the inner protective layer is an aerogel tape protective layer.

[0009] Further, the mica tape layer is wrapped with 3 layers of low-heat-value mica tape, and the wrapping overlap rate is 20%-30%; the wrapping overlap rate of the aerogel tape protective layer is 15%-25%.

[0010] Further, the filler is an alkali-free glass fiber filling rope.

[0011] Further, the outer protective layer is a double-layer structure, the inner layer structure is a wrapping tape, and the outer layer structure is an outer protective layer.

[0012] Further, the wrapping tape is a dense alkali-free glass fiber flame-retardant tape, the wrapping tape thickness is 0.18 mm, the wrapping overlap rate is 20%-30%, the wrapping layer number is 2, and the cabling pitch is 1000-1200 mm.

[0013] Further, the outer protective layer is a copper sheath manufactured by argon arc welding process, the copper sheath thickness is 0.6 mm, the width is 110 mm, the rolling mark depth is 1.5-2.0 mm, and the welding rolling mark pitch is 10-12 mm.

[0014] Further, the cable and the cable core have a circular cross-sectional shape.

[0015] In conclusion, the device has the following beneficial effects by using the technical scheme: the plated conductor is plated with a graphene nanometer silver composite plating layer, the graphene nanometer silver composite plating layer can effectively prevent oxygen and moisture from contacting the conductor, thereby improving the oxidation resistance of the conductor in a high-temperature environment, preventing the occurrence of yellowing, purple discoloration and oxidation spot generation in a humid environment, effectively improving the volume resistivity of the monofilament, reducing the resistance of the cable, reducing power consumption, improving the power transmission efficiency of the cable, reducing the volume resistivity of the monofilament by 3.1% after plating, greatly improving the conductivity, and saving 1%-2% of material consumption. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a cross-sectional structure schematic view of the plated conductor cable of the utility model;

[0017] Figure 2 is a first structure schematic view of the plated conductor in the utility model;

[0018] Figure 3 is a second structure schematic view of the plated conductor in the utility model;

[0019] Figure 4is a third structure schematic view of the plated conductor in the utility model;

[0020] Mark explanation: 1-plated conductor;2-insulation layer;3-inner protective layer;4-filler;5-tape;6-outer protective layer;101-round monofilament;201-graphene nanometer silver composite plating layer;301-type line monofilament. DETAILED DESCRIPTION

[0021] The technical scheme in the utility model embodiment will be clearly and completely described below with reference to the drawings in the utility model embodiments, but does not constitute the limitation to the protection scope of the utility model.

[0022] In the utility model, in order to describe more clearly, make the following explanation: the observer faces the attached Figure 1 Observation, the left front side of the observer is set as front, the right rear side of the observer is set as rear, the left rear of the observer is set as left, the right front of the observer is set as right, the upper surface of the observer is set as upper, and the lower surface of the observer is set as lower, it should be pointed out that the terms "front end", "rear end", "left side", "right side", "middle", "upper", "lower" and the like in the text indicate the orientation or positional relationship based on the orientation or positional relationship of the attached drawings, and are only for the convenience of clearly describing the utility model, and do not indicate or imply that the structure or part indicated must have a particular orientation or be constructed in a particular orientation, so it cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third", "fourth" are only for the purpose of clarity or simplification of description, and cannot be understood as indicating or implying relative importance or quantity.

[0023] The utility model plated conductor 1 manufacture adopts copper wire blank or aluminum rod, aluminum alloy rod, is once cold-drawing or extrusion into monofilament through several dies, satisfies GB / T 3953 and GB / T 3955 standard after annealing, then the monofilament after forming is prepared with a dense graphene nanometer silver composite plating layer 201 for monofilament through two ways of composite electrodeposition and electrophoresis-electrodeposition, and the plating layer thickness is about 20 μm, the graphene nanometer silver composite plating layer will improve the oxidation resistance of the conductor, improve the phenomena such as oxidation yellowing, purple discoloration under high temperature environment of the conductor and oxidation spot under humid environment, improve the volume resistivity of monofilament and improve the appearance of monofilament.

[0024] Taking the detection result of traditional non-plated metal annealed copper monofilament as an example, the volume resistivity of non-plated metal annealed copper monofilament is 0.017006 Ω·mm² / m, and the volume resistivity of copper monofilament after preparing a dense graphene nanometer silver composite plating layer is 0.016479 Ω·mm² / m. As can be seen, the volume resistivity of the copper monofilament after preparing a dense graphene nanometer silver composite plating layer of the utility model is reduced by 3.1%, which greatly improves the conductivity and saves 1%-2% of material consumption.

[0025] The cable has more excellent conductive performance and fireproof performance than a conventional cable, and has more excellent performances of flame retardation, smoke production and heat release, and meets the flame retardation requirements of GB / T 18380 and GB / T 31247 standards.

[0026] Referring to Figure 1 The utility model provides a kind of plated conductor cable, including cable core and the outer sheath wrapped in the outer surface of cable core, cable core includes several main wires, and several main wires are stranded into cable core, and filler 4 is arranged at the gap between several main wires in cable core;The structure of main wire is plated conductor 1, insulating layer 2, inner protective layer 3 in turn from inside to outside;Plated conductor 1 is plated single wire stranding, and plated single wire is copper single wire plated with graphene nanometer silver composite coating 201;Plating thickness is 18-22 μm.

[0027] Graphene nanometer silver composite coating 201 in the utility model adopts GO-PEG-PHGC graphene oxide-nanometer silver composite material of Xi'an Qiyue biology.

[0028] As a preferred embodiment of the utility model, the number of main wires is 3, and the plating thickness is 20 μm.

[0029] As a preferred embodiment of the utility model, referring to Figures 2-4 , plated conductor 1 structure is round single wire 101 or profiled wire single wire 301 stranding, or round single wire 101 and profiled wire single wire 301 are jointly stranding.

[0030] After the single wire of a dense graphene nanometer silver composite coating is prepared, a plurality of single wires are stranded into a whole according to process requirements by stranding machine, meet GB / T3956 standard provisions, applicable to non-tight compression type stranded conductor (round single wire 101 is composed of), full profiled wire stranded conductor (profiled wire single wire 301 is composed of) and non-tight compression composite conductor (round single wire 101 and profiled wire single wire 301 are jointly composed, inner layer is round single wire 101, and outer layer is profiled wire single wire 301), can be applicable to 0.5mm 2 -800mm 2 Specification conductor. Figure 2 Figure 3 Figure 4

[0031] Specifically, insulating layer 2 is mineral insulating layer, and the mineral insulating layer is mica tape layer;Inner protective layer 3 is aerogel tape protective layer.Specifically, mica tape layer adopts low calorific value mica tape to wrap 3 layers, and the wrapping overlap rate is 20%~30%;The wrapping overlap rate of aerogel tape protective layer is 15%~25%.

[0032] Specifically, filler 4 is alkali-free glass fiber filling rope.

[0033] ​​​Specifically, the outer sheath is a double-layer structure, the inner layer structure is a wrapping tape 5, and the outer layer structure is an outer protective layer 6. Specifically, the wrapping tape 5 is a dense alkali-free glass fiber flame-retardant tape, the thickness of the wrapping tape 5 is 0.18 mm, the wrapping overlap rate is 20% to 30%, the wrapping layer number is 2, and the cabling pitch is 1000 mm to 1200 mm. Specifically, the outer protective layer 6 is a copper sheath manufactured by an argon arc welding process, the thickness of the copper sheath is 0.6 mm, the width of the copper sheath is 110 mm, the rolling pattern depth is 1.5 mm to 2.0 mm, and the welding rolling pattern pitch is 10 mm to 12 mm.

[0034] Specifically, the cross-sectional shape of the cable and the cable core is circular.

[0035] The utility model discloses a kind of plated conductor cables, simultaneously applied mineral insulation, its main features are as follows specifically:

[0036] 1. Plated conductor: adopt graphene nanometer silver composite plating layer high electric performance conductor, can greatly improve electric conductivity, reduce manufacturing cost, improve market competitiveness, reduce material consumption, save resources, and can have excellent antioxidant property, improve the problem such as yellowing, purple discoloration and wet environment oxidation spot under high temperature environment of conductor oxidation. After the surface of monofilament is plated, appearance is smooth, reduce the burr and other defects of monofilament surface, improve the appearance of bad defects of conductor.

[0037] 2. Insulation layer: insulation layer is mineral insulation layer, mineral insulation layer adopts low calorific value mica tape 3 layers, and the overlap rate is 20% to 30%.

[0038] 3. Inner protective layer: 1 layer aerogel tape protective layer is wrapped outside insulation layer to make inner protective layer, and the overlap rate is 15% to 25%, which greatly improves the fireproof performance of mineral insulated cable, can satisfy not less than 950 DEG C fire temperature, 180 minutes of ordinary fire resistance test, and not less than 830 DEG C fire temperature, 120 minutes of fire resistance+mechanical impact+water spray test.

[0039] 4. Filler: filler adopts alkali-free glass fiber filling rope.

[0040] 5. Wrapping tape cabling: after filling, 2 layers of dense alkali-free glass fiber flame-retardant tape with thickness of 0.18 mm are wrapped outside, the overlap rate is 20% to 30%, and the cabling pitch is 1000 mm to 1200 mm.

[0041] 6. Outer protective layer: copper sheath is produced by argon arc welding, the thickness of the copper sheath is 0.6 mm, the width of the copper sheath is 110 mm, the rolling pattern depth is 1.5 mm to 2.0 mm, and the welding rolling pattern pitch is 10 mm to 12 mm.

[0042] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, under the premise of can make a number of improvements and refinements, these improvements and refinements also as the protection scope of the present application.

Claims

1. A coated conductor cable comprising a core and an outer jacket surrounding an outer surface of the core, characterized in that: The cable core comprises a plurality of main wires, the plurality of main wires are stranded into the cable core, and the main wires and interspaces between the main wires in the cable core are provided with fillers; the structure of the main wire comprises, from inside to outside, a plated conductor, an insulation layer, and an inner protective layer; the plated conductor is stranded by plated filaments, the plated filaments are copper filaments plated with graphene nanometer silver composite plating layers; and the plating layer has a thickness of 18-22 μm.

2. The coated conductor cable of claim 1, wherein: The number of the main wires is 3, and the plating layer has a thickness of 20 μm.

3. The coated conductor cable of claim 2, wherein: The plated conductor is stranded by round filaments or profiled filaments, or is stranded by round filaments and profiled filaments together.

4. The coated conductor cable of any of claims 1-3, wherein: The insulation layer is a mineral insulation layer, and the mineral insulation layer is a mica tape layer; and the inner protective layer is an aerogel tape protective layer.

5. The coated conductor cable of claim 4, wherein: The mica tape layer is wrapped by 3 layers of low-calorific-value mica tapes, and the wrapping overlap rate is 20%-30%; and the wrapping overlap rate of the aerogel tape protective layer is 15%-25%.

6. The conductor cable of claim 1 or 3 or 5, wherein: The filler is an alkali-free glass fiber filling rope.

7. The coated conductor cable of claim 6, wherein: The outer sheath has a double-layer structure, the inner layer structure is a wrapping tape, and the outer layer structure is an outer protective layer.

8. The coated conductor cable of claim 7, wherein: The wrapping tape is a dense alkali-free glass fiber flame-retardant tape, has a thickness of 0.18 mm, a wrapping overlap rate of 20%-30%, 2 wrapping layers, and a cabling pitch of 1000-1200 mm.

9. The coated conductor cable of claim 7, wherein: The outer protective layer is a copper sheath manufactured by argon arc welding, has a thickness of 0.6 mm, a width of 110 mm, a rolling mark depth of 1.5-2.0 mm, and a welding rolling mark pitch of 10-12 mm.

10. The coated conductor cable of claim 9, wherein: The cross-sectional shape of the cable and the cable core is circular.

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