CN105679433A - Shielding photoelectric composite cable - Google Patents

Abstract

The invention discloses a shielding photoelectric composite cable. The cable comprises an optical fiber (1), optical fiber factice (2), a steel armoured sheath layer (3), a dielectric filling layer (4), a corrosion-resistant asphalt layer (5), a fireproof layer (7) and an outer sheath layer (8) from inside to outside in sequence, wherein a copper-wire copper-strip combined shielding layer (6) is coated with the corrosion-resistant asphalt layer (5); the copper-wire copper-strip combined shielding layer (6) comprises multiple soft circular copper wires and copper strips coating the copper wires; the dielectric filling layer (4) comprises a fiber band with micropores, a flame-retardant layer and a waterproof layer; and the flame-retardant layer, the fiber band and the waterproof layer are adhered in sequence.

Description

A kind of shielded from light electricity compound cable

Technical field

The present invention relates to technical field of information communication, it relates to a kind of shielded from light electricity compound cable.

Background technology

(clear Guangxi 22 years) March in 1897, China's first underground power cable knocks down use in Shanghai, and the light conduits of the plumbous jacket of the most edge of those the 2700 meters of long rubbers used then is imported product. Until after 42 years (nineteen thirty-nine) just produce, in Kunming (cable factory), the domestic cable of root of informing against. Before 1949, wires and cables industry only worker more than 2000 people, production unit about 500, year the highest copper consumption only 6500 tons. Wherein Kunming, Shanghai, Tianjin, four, Shenyang Electric Wire Factory share copper 5700 tons, and output accounts for the 87.7% of the whole nation, wires and cables industry slower development. Until after New China was founded in l949, the wires and cables industry of China just obtains develop rapidly.

The basic equipment that electric wire is the conveying energy, transmission information is indispensable, from social informatization, electrified fast-developing today, electric wire has become one of basic product the most important in economic construction. Wires and cables industry is again supporting industry, and product must meet each main industry of national economy to the requirement of electric wire performance, and national economy thinks that most industry is all relevant to electric wire, and its industry status is very important. China's wires and cables industry is still in developmental stage at present, and as the important guide's industry of the development of the national economy, the growth of electric wire production and marketing index is generally higher than total value of production in national economy outline.

Traditional cable and optical fiber mostly are point open type, optoelectronic composite cable structure is less, photoelectricity composite demand softness, tension, oil resistant, low temperature high temperature resistant, resistance to, rub resistance etc., the environmental performance of cable is required high, screen layer many employings tinsel establishment of used for oil platform common cable in the past, easily there is outer foreskin bulge or pricks the problem of threading core in cable shield.

For humid environment, the water ratio of cable material itself, and the result of the effect of stress, chemistry, power cable is in operation, capital forms " water tree " phenomenon, causing insulation layer to destroy, the defect place in sheath will produce electric discharge, even punctures cable, cause power-off accident, and optical cable also has same problem, thus affect the Signal transmissions of optical cable, cause communication quality to reduce.

For solving the problem, usually adopt the band that blocks water with block-water performance at present, but under special circumstances, cable, optical cable also require to have flame retardant properties, to solve security against fire hidden danger. Block water band, the inhibiting tape used in cable, cable configuration at present, blocks water and flame retardant properties although having, but the structure that normally bi-material repeatedly holds, bi-material performance affects mutually, reduce fire-retardant and block-water performance, and production cost height, it is difficult to popularize.

Summary of the invention

It is an object of the invention to provide a kind of advantages of good shielding performance, not bulge, a kind of shielded from light electricity compound cable that fire-resistant water resistance is good.

The present invention is in order to realize above-mentioned purpose by the following technical solutions:

A kind of shielded from light electricity compound cable, it is characterized in that, comprise the optical fiber (2) arranged successively from the inside to the outside, optical fiber ointment (2), steel armour restrictive coating (3), medium packing layer (4), anti-corrosion asphalt layer (5), flame retardant coating (7), external sheath layer (8), copper wire copper strips combination screen layer (6) it is enclosed with in described anti-corrosion asphalt layer (5), copper wire copper strips combination screen layer (6) is made up of some soft round copper wires and the copper strips wrapped in outside copper wire, medium packing layer (4) comprise micropore is set have fiber band, flame-retardant layer, waterproof layer, flame-retardant layer, fiber band, waterproof layer bonds successively.

Described flame-retardant layer be comprise arrange successively copper wire gauze, expanded granular layer, mica layer, described mica layer thickness is 0.3-0.8mm, and the filament diameter of described copper wire gauze is 0.3-0.8mm.

Waterproof layer comprises enhancement Layer bonding successively, basic unit, water blocking layer and tectum, and described enhancement Layer is that copper wire gauze, basic unit and tectum are non-woven fabrics, and water blocking layer is mica tape or glass fibre.

Through hole, this configuration avoids and occur outer foreskin bulge when using tinsel to work out cable shield or prick the problem of threading core.

In technique scheme, described fireproofing is refractory synthetic mica tape.

In technique scheme, medium packing layer (4) is fireproof water-resisting tape, and fireproof water-resisting tape comprises mica layer, and mica layer two sides is bonded with fiberglass gridding braid respectively, is bonded with the film being made up of water-proofing powder outside fiberglass gridding braid

In technique scheme, medium packing layer (4) is fireproof water-resisting tape, and fireproof water-resisting tape comprises mica layer, fiberglass gridding braid, fiberglass gridding braid is bonded on the top and bottom of mica layer, is bonded with the film being made up of water-proofing powder outside fiberglass gridding braid. This structure has organically combined the mica layer with fire-proof function so that it possesses waterproof and fire prevention two kinds of functions.

In technique scheme, insulation layer (12) is polyethylene or polyolefin.

In technique scheme, oversheath (1) is cross-linking radiation polyolefine or cross-linking radiation ethylene-propylene rubber(EPR).

Because present invention employs technique scheme, therefore possess following useful effect:

1, stiffening web make the powerful big raising of whole composite rope.

2, the structure of screen layer can ensure that screen layer is under identical thickness, the list adopting this structural rate traditional adopts layers of copper structure more saving copper material, save cost, on the other hand, aluminium foil quality is lighter, thus also reducing the weight of screen layer, screen layer is evenly equipped with through hole, this configuration avoids and occurs outer foreskin bulge when using tinsel to work out cable shield or prick the problem of threading core.

3, the use of medium packing layer makes its function taking into account fire-proof and water-proof avoid the performance that blocks water and influence each other when fire retardant material is used alone, and entirety provides the performance of fire-proof and water-proof.

Accompanying drawing explanation

Fig. 1 is the structural representation of the present invention.

Embodiment

A kind of shielded from light electricity compound cable, it comprises optical fiber 11 from the inside to the outside successively, optical fiber ointment layer 10, internal layer sheath 9, steel pipe 8, asphalt corrosion resistant layer 7, medium packing layer 4, screen layer 3, fireproofing 2, oversheath 1, 4 stiffening webs 6 and 4 copper conductors 5 it are provided with in medium layer packing layer 4, copper conductors 5 is wrapped with insulation layer 12, described screen layer 3 comprises the copper foil layer 13 that thickness is 1.5 microns, copper foil layer 13 is coated with the aluminium foil layer that thickness is 9 microns, screen layer is provided with the through hole running through copper foil layer 13 and aluminium foil layer 13, the one-tenth array distribution of described through hole, pitch of holes is 400-500 micron, through-hole diameter is 300-350 micron.In its scheme, optical fiber is wrapped with optical fiber ointment, optical fiber ointment is wrapped with steel pipe, optical fiber ointment and light pipe with the use of, even if making optoelectronic composite cable think in the situation bearing bigger external pressure, even if when the slight deformation of steel pipe, ointment also can not be too big to the pressure of optical fiber, thus avoid the problem that excessive optical fiber bears excessive pressure thus causes the reduction of Optical Fiber Transmission efficiency.

Screen layer comprises copper foil layer, Copper Foil two sides is all coated with aluminium foil, under identical thickness, the list adopting this structural rate traditional adopts layers of copper structure more saving copper material, has saved cost, on the other hand, aluminium foil quality is lighter, thus also reducing the weight of screen layer, screen layer is evenly equipped with through hole, this configuration avoids and occurs outer foreskin bulge when using tinsel to work out cable shield or prick the problem of threading core.

In technique scheme, described fireproofing is refractory synthetic mica tape.

In technique scheme, medium packing layer 4 is fireproof water-resisting tape, and fireproof water-resisting tape comprises mica layer, and mica layer two sides is bonded with fiberglass gridding braid respectively, is bonded with the film being made up of water-proofing powder outside fiberglass gridding braid

In technique scheme, medium packing layer 4 is fireproof water-resisting tape, and fireproof water-resisting tape comprises mica layer, fiberglass gridding braid, fiberglass gridding braid is bonded on the top and bottom of mica layer, is bonded with the film being made up of water-proofing powder outside fiberglass gridding braid. This structure has organically combined the mica layer with fire-proof function so that it possesses waterproof and fire prevention two kinds of functions.

In technique scheme, insulation layer 12 is polyethylene or polyolefin.

In technique scheme, oversheath 1 is cross-linking radiation polyolefine or cross-linking radiation ethylene-propylene rubber(EPR).

Claims (3)

1. a shielded from light electricity compound cable, it is characterized in that, comprise the optical fiber (2) arranged successively from the inside to the outside, optical fiber ointment (2), steel armour restrictive coating (3), medium packing layer (4), anti-corrosion asphalt layer (5), flame retardant coating (7), external sheath layer (8), copper wire copper strips combination screen layer (6) it is enclosed with in described anti-corrosion asphalt layer (5), copper wire copper strips combination screen layer (6) is made up of some soft round copper wires and the copper strips wrapped in outside copper wire, medium packing layer (4) comprise micropore is set have fiber band, flame-retardant layer, waterproof layer, flame-retardant layer, fiber band, waterproof layer bonds successively.

2. shielded from light electricity compound cable, it is characterised in that, described flame-retardant layer be comprise arrange successively copper wire gauze, expanded granular layer, mica layer, described mica layer thickness is 0.3-0.8mm, and the filament diameter of described copper wire gauze is 0.3-0.8mm.

3. a shielded from light electricity compound cable, it is characterised in that, waterproof layer comprises enhancement Layer bonding successively, basic unit, water blocking layer and tectum, and described enhancement Layer is that copper wire gauze, basic unit and tectum are non-woven fabrics, and water blocking layer is mica tape or glass fibre.