CN203536076U

CN203536076U - Plastic insulated control cable

Info

Publication number: CN203536076U
Application number: CN201320520602.0U
Authority: CN
Inventors: 叶丰连; 叶文龙; 李柏峰
Original assignee: TONGQIU WIRE CABLE Co Ltd
Current assignee: Shanghai Tongqiu wire & cable Limited by Share Ltd
Priority date: 2013-08-26
Filing date: 2013-08-26
Publication date: 2014-04-09
Anticipated expiration: 2023-08-26

Abstract

The utility model relates to a plastic insulated control cable, which sequentially comprises conductors, insulating layers, a filling material, an internal wrapping tape, a shielding layer, an external wrapping tape layer, an internal sheath, an armor layer, and a sheath from the inside to the outside. The core of the cable is formed by 7 to 61 conductive wire cores. A cross-linking polyethylene insulating material is adopted as the insulating material of the insulating layers (2), thereby enabling the heat resistance temperature of the cable to be increased from 70 DEG C to 90 DEG C above. The shielding layer (5) is formed by braiding fine and soft copper wires, and the braiding density is greater than 80%. The external wrapping tape layer (6) is formed by a longitudinally-wrapping plastic-aluminum composite tape layer and constitutes a double shielding layer together with the shielding layer (5), thereby enabling the total shielding density of the cable to be equal to or greater than 100%. An extruding polyethylene material is adopted in the internal sheath (7) and constitutes a waterproof layer together with the longitudinally-wrapping plastic-aluminum composite tape layer of the external wrapping tape layer (6). The armor layer is formed by winding low-carbon galvanized steel wires (8) and soft copper wires (9) tightly according to a certain ratio. The armor layer has magnetic field and electromagnetic field resisting effects and is also anti-pulling and anti-compressing.

Description

Plastic insulation control cables

Technical field

The utility model relates to cable technology field, relates in particular to a kind of plastic insulation control cables.

Background technology

Along with the rapid growth of national economy, the demand of electric energy is also to the trend of rapid growth.In order to alleviate electric power intense situation increasingly, country greatly develops exploitation and the utilization of nuclear power.Because nuclear power plant is built in place meagrely-populated, that natural environment is comparatively arduous conventionally, need to deliver power to over long distances the area that people produce, life activity is relatively intensive.Fed distance is long, and environment is poor, just relatively high to the performance requirement of handling cable.

If handling cable is laid in underground, can run into car depress sunken, mouse gnaws, the thing such as sharp keen stone is coughed up the problem such as draw in hard stratum; These problems seem all very little, once occur, loss will be very large.Once and there is cable fault, in view of the factor of environment, be difficult to solve simply fast.

To there being the cable of similar specific (special) requirements; in industry, use at present armoured cables more; in the outside of cable external insulation layer, adding layer of metal or other materials (environment that television cable lays and determine), thereby protection cable can not destroyed by extraneous mechanical force, by chemical gas corrosion etc.

Because the mechanical protection layer of armoured cable can be added on the cable of any structure, increase the mechanical strength of cable, improve erosion prevention; Can adopt any mode to lay, be applicable to again the directly buried installation of Rock Region.Cable adds that the object of armour is except strengthening tensile strength, outside the mechanical protections such as compression strength increase the service life, armouring have certain external force resistance performance, anti-mouse baits all rightly, be unlikely to see through armouring and cause electric power transfer problem, it is large that the bending radius of armouring is wanted, armour can ground connection, protection cable is normally by the cable of several or the stranded similar rope forming of several groups of wires (at least two every group), mutually insulated between every group of wire, and often round Yi Gen center, be twisted into, the cover layer electric wire that whole outside is surrounded by high-insulation refers to for electric power, the material of communication and associated transport purposes.Armoured cable mechanical protection layer can be added on the cable of any structure, to increase the mechanical strength of cable, improves erosion prevention, is the telephone cable designing for being subject to mechanical damage and extremely erodible area.Can adopt any mode to lay, be more suitable for the directly buried installation of Rock Region.

The production of external armoured cable mainly concentrates on several relatively advanced countries, as the U.S., Britain, Japan, Germany, Russia.For high-performance armoured cable, our country's most of dependence on import also, not only cost is high, and technology is also under one's control.

Summary of the invention

For addressing the above problem, the utility model discloses a kind of plastic insulation control cables, its performance reaches following technical requirement:

1, combustibility:

According to the smoke density test method of IEC61034 regulation, light transmittance >=60% during cable fire; According to the pH value of the mensuration burning gases aqueous solution of IEC754-2 regulation and the test method of conductivity, pH value >=4.3 of solution after cable fire; Conductivity≤10 μ S/mm.Simultaneously cable insulation core by GB/T18380.1 the single testing vertical flammability of regulation.

2, useful life:

Adopt the thermal life qualification test of IEC60216 and IEEE383 standard regulation; And passed through to accelerate in Q/TNGT02 Shanghai City company standard symbol record E the qualification test of electric aging life-span.

3, thermal endurance: conductor minimum operating temperature, at 90 ℃, all can keep normal operation in the situation in high ambient temperature and self-heating, has long-term heat-resisting operating characteristic.

The plastic insulation control cables that the utility model is related, comprise from inside to outside the core group being formed by 7～61 core conductors, described each core is comprised of core conductor and insulating barrier, and core group outer is arranged with interior band, between core group and band, is full of filler; Interior band, screen, outer band, inner sheath, armour and sheath.

Wherein said armour is closely wound around and forms according to certain ratio by many steel wires and copper wire, plays diamagnetic, electromagnetic field effect, and tension, resistance to compression.

accompanying drawing explanation:

Fig. 1 low-temperature torsion resistance control cables schematic cross-section.

embodiment:

Below in conjunction with embodiment, the related plastic insulation control cables of the utility model is further described.

The plastic insulation control cables that the utility model relates to, it comprises from inside to outside: conductor 1, insulating barrier 2, inserts 3, interior band 4, screen 5, outer belting layer 6, inner sheath 7,

armour

8,9 and sheath 10.

Wherein cable conductor consists of 7-61 root conductor wire core, and described conductor wire core consists of conductor 1 and insulating barrier 2; Wherein said conductor 1 adopts single or many copper wires formations, guarantees the characteristics such as the softness of cable, easy installation, resistance to torsion; The insulating material of described insulating barrier 2 adopts crosslinked polyethylene insulation material, that described plastic insulation control cables possesses the combination properties such as resisting environmental stress and cracking, chemical resistance corrosion, creep resistance and electrical property, improve temperature resistant grade, the heat resisting temperature of cable is brought up to more than 90 ℃ from 70 ℃.

Described filler 3 adopts polypropylene material; Make cable there is chemical stability good.

Described interior band 4 adopts LSOH anti-flaming material;

Described screen 5 is used and adopts soft proof copper-wire braided to form, and count >80% has the performance of anti-electromagnetism electrostatic interference;

Described outer belting layer 6 consists of vertical alclad plastic composite strip layer; Form double shield layer with described screen 5, make total shielding >=100% density of cable, there is the performance of anti-electromagnetism electrostatic interference.

Described inner sheath 7 adopts and extrudes polythene material, forms watertight composition with the vertical alclad plastic composite strip layer of outer belting layer 6, improves the weather resistance of plastic insulation control cables;

Described armour is closely wound around and forms according to certain ratio by low-carbon (LC) zinc-coated wire 8 and soft copper silk 9, plays diamagnetic, electromagnetic field effect, and tension, resistance to compression.

The fire-retardant low-smoke low-halogen pvc material of described oversheath 10 forms, and has fire-retardant, low cigarette, low halogen effect.

Compare with other power cable, the related plastic insulation control cables of the utility model has the interference of good anti-external electrical field, magnetic field, electromagnetic field.The feature with fire-retardant, low cigarette, low halogen, tension, resistance to compression, waterproof, replaces the high-performance armoured cable of import to use in adverse circumstances, and the cable line construction cost of nuclear power is reduced, and realizes as early as possible the target of Construction of Nuclear Electricity production domesticization.

Claims

1. a plastic insulation control cables, comprises: conductor (1), insulating barrier (2), filler (3), interior band (4), screen (5), outer band (6), inner sheath (7), armour (8,9) and sheath (10) from inside to outside;

Wherein said conductor (1) adopts single or many copper wires, and insulating barrier (2) adopts crosslinked polyethylene insulation material, and conductor (1) forms conductor wire core with insulating barrier (2); Between conductor wire core and interior band (4), be full of filler (3);

Wherein said interior band (4) adopts LSOH anti-flaming material;

It is characterized in that: described screen (5) is used and adopts soft proof copper-wire braided to form, count >80%, described outer belting layer (6) consists of vertical alclad plastic composite strip layer; Outer belting layer (6) screen (5) forms double shield layer; Described armour is closely wound around and forms by low-carbon (LC) zinc-coated wire (8) and soft copper silk (9).

2. plastic insulation control cables as claimed in claim 1, is characterized in that: described inner sheath (7) adopts and extrudes polythene material, forms watertight composition with outer belting layer (6).

3. plastic insulation control cables as claimed in claim 1 or 2, is characterized in that: described sheath (10) consists of fire-retardant low-smoke low-halogen pvc material.

4. plastic insulation control cables as claimed in claim 1 or 2, is characterized in that: wherein said filler (3) adopts polypropylene material.

5. plastic insulation control cables as claimed in claim 3, is characterized in that: wherein said filler (3) adopts polypropylene material.

6. plastic insulation control cables as claimed in claim 1 or 2, is characterized in that: described conductor wire core is 7 to 61.

7. plastic insulation control cables as claimed in claim 3, is characterized in that: described conductor wire core is 7 to 61.

8. plastic insulation control cables as claimed in claim 4, is characterized in that: described conductor wire core is 7 to 61.

9. plastic insulation control cables as claimed in claim 5, is characterized in that: described conductor wire core is 7 to 61.