CN214476603U - Optical fiber composite power cable - Google Patents

Abstract

The utility model discloses a compound power cable of optic fibre, its technical scheme main points are: the fireproof cable comprises a plurality of cable cores, wherein the cable cores are mutually twisted, the cable cores sequentially comprise a cable core conductor, a fireproof winding belt and an insulating layer from inside to outside, the fireproof winding belt is a ceramic silicon rubber fireproof and fireproof winding belt, a winding band layer is arranged at the outer end of each cable core, a filler is filled in a gap between the winding band layer and the cable core, a shielding layer is arranged outside the winding band layer, a fireproof layer is arranged outside the shielding layer, the fireproof layer is made of thermoplastic vulcanized rubber materials, an armor layer is arranged outside the fireproof layer, a sheath layer is arranged outside the armor layer, a plurality of tensile-resistant ropes are arranged inside the filler, and the tensile-resistant ropes are formed by twisting a plurality of aramid fibers; the utility model provides a current power cable's the radiation resistance ability poor around the band, density is great moreover, can add the weight of heavy cable, the fire resistance and the relatively poor problem of pull resistance of cable simultaneously.

Description

Optical fiber composite power cable

Technical Field

The utility model belongs to the technical field of the cable technique and specifically relates to a compound power cable of optic fibre.

Background

At present, the optical fiber composite power cable simultaneously constructs a high-speed communication network platform, factors such as equipment, construction and pipeline resources are comprehensively considered, compared with the method of laying an optical cable and a cable respectively, the optical fiber composite power cable can greatly reduce construction cost, resource waste caused by secondary construction is avoided, the optical fiber composite power cable is a preferred technology with high integration level and resource saving of a low-voltage communication access network at present, the intelligent power grid core services such as power distribution automation, power consumption information acquisition, electric vehicle charging and discharging, distributed power supply access and intelligent power consumption bidirectional interaction service can be realized by depending on a power fiber-to-the-home network, and the expansion services such as intelligent families, intelligent buildings, intelligent communities, intelligent cities and comprehensive information services can be developed along with the technological progress and the change of social power consumption requirements.

The conventional optical fiber composite power cable is mostly wrapped and wound by a fluoroplastic tape or other wrapping tapes, but the wrapping tapes have poor radiation resistance and high density, so that the total weight of the cable is increased; meanwhile, the fire resistance and the tensile resistance of the existing optical fiber composite power cable are poor, and the normal use of the cable can be influenced.

SUMMERY OF THE UTILITY MODEL

To the problem mentioned in the background art, the utility model aims at providing a compound power cable of optic fibre to solve the current compound power cable of optic fibre who mentions in the background art's around the radiation resistance performance of band poor, density is great moreover, can add the weight of heavy cable, the fire proofness of cable and the relatively poor problem of pull resistance simultaneously.

The above technical purpose of the present invention can be achieved by the following technical solutions:

an optical fiber composite power cable comprises a plurality of cable cores which are mutually twisted, the cable core comprises a cable core conductor, a fireproof winding belt and an insulating layer from inside to outside in sequence, the fireproof winding belt is a ceramic silicon rubber fireproof winding belt, the outer end of the cable core is provided with a wrapping tape layer which is a polyimide composite tape, a gap between the wrapping band layer and the cable core is filled with filler, the outer side of the wrapping band layer is provided with a shielding layer, the outer side of the shielding layer is provided with a fireproof layer which is made of thermoplastic vulcanized rubber material, the outside of flame retardant coating is provided with the armor, the outside of armor is provided with the restrictive coating, the inside of filler is provided with many stretch-proofing ropes, the stretch-proofing rope is formed by many aramid fiber twists.

Furthermore, the cable core conductor is made of annealed copper wires, a tin coating is arranged on the outer side of each copper wire, and the thickness of the tin coating is 1 mm.

By adopting the technical scheme, the tin-plated layer can improve the insulating property of the copper conductor, and the current in each copper conductor is ensured not to interfere.

Furthermore, the insulating layer is formed by extruding and wrapping polyethylene materials.

By adopting the technical scheme, the insulating layer is made of the cross-linked polyethylene material, so that the cable cores have a good electric insulating effect, the cross-linked polyethylene material can be used at 90 ℃ for a long time, the heat-resistant temperature during short circuit can reach 250 ℃ at most, and carbon dioxide and water are generated by the cross-linked polyethylene once the cable burns, so that the cable has the characteristics of no halogen and low smoke.

Further, the filler is polyester yarn.

By adopting the technical scheme, the polyester yarn has good elasticity and bulkiness, and is a good filler.

Furthermore, the shielding layer is formed by mixing and weaving tinned copper wires and an aluminum foil composite tape.

Through adopting above-mentioned technical scheme, make the utility model discloses possess stronger shielding external signal interference's ability.

Furthermore, the armor layer is formed by lapping and overlapping copper strips, and the lapping and overlapping rate is not less than 70%.

Through adopting above-mentioned technical scheme, can play good protection and supporting role to the cable.

Further, the sheath layer is a crosslinked polyethylene sheath.

By adopting the technical scheme, the cross-linked polyethylene sheath has the comprehensive properties of good mechanical property, environmental stress cracking resistance, chemical corrosion resistance, temperature resistance, creep resistance, electrical property and the like, and the temperature resistance grade is obviously improved.

To sum up, the utility model discloses mainly have following beneficial effect:

1. according to the utility model, the fireproof winding belt is arranged outside the cable core conductor, the fireproof winding belt is a ceramic silicon rubber fireproof and fireproof winding belt, the ceramic silicon rubber fireproof and fireproof winding belt is rapidly fired into a ceramic-shaped hard and complete shell at the temperature of 550-3100 ℃, the hard shell armor after combustion plays a good role in protecting the circuit, and the smoothness of the circuit under the fire disaster condition is guaranteed; the fireproof layer is arranged in the cable and is made of thermoplastic vulcanized rubber, and the thermoplastic vulcanized rubber has excellent high-temperature resistance and can effectively improve the fireproof and high-temperature resistance of the cable.

2. The utility model discloses a, be the polyimide composite band through setting up around the band layer, the radiation resistance performance of polyimide composite band is best, and density is little, can alleviate wire and cable's weight and space greatly, and the resistant electric arc of polyimide composite band moreover, hydrolysis-resistant, resistant radiation, spatial stability are all relatively good, are a good band material.

3. The utility model discloses a, through being provided with many tensile ropes in the inside of cable, the tensile rope is formed by many aramid filaments transposition, and aramid filaments has high temperature resistant, acid and alkali resistant, excellent properties such as light in weight, and aramid filaments has good intensity and toughness simultaneously, can improve the tensile resistance of cable effectively.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. a cable core; 101. a cable core conductor; 102. a fire wrap tape; 103. an insulating layer; 2. wrapping a belt layer; 3. a filler; 4. a shielding layer; 5. a fire barrier layer; 6. an armor layer; 7. a sheath layer; 8. a tensile strand.

Detailed Description

In order to make the objects and technical solutions of the present invention clear and fully described, and the advantages thereof more clearly understood, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Referring to fig. 1, an optical fiber composite power cable includes a plurality of cable cores 1, the plurality of cable cores 1 are twisted with each other, the cable cores 1 sequentially include a core conductor 101 from inside to outside, fire prevention winding area 102 and insulating layer 103, fire prevention winding area 102 is fire-resistant winding area of pottery silicon rubber fire prevention, cable core 1's outer end is provided with around band layer 2, be the compound area of polyimide around band layer 2, it is provided with filler 3 to fill around the gap department between band layer 2 and the cable core 1, be provided with shielding layer 4 around the outside of band layer 2, shielding layer 4's the outside is provided with flame retardant coating 5, flame retardant coating 5 is made by thermoplasticity vulcanized rubber material, the outside of flame retardant coating 5 is provided with armor 6, the outside of armor 6 is provided with restrictive coating 7, the inside of filler 3 is provided with many stretch-proofing ropes 8, stretch-proofing rope 8 is formed by the transposition of many aramid fibers.

Referring to fig. 1, the cable core conductor 101 is made of annealed copper wire, and a tin-plated layer is disposed on the outer side of the copper wire, and the thickness of the tin-plated layer is 1 mm.

Referring to fig. 1, the insulating layer 103 is extruded from a polyethylene material.

Referring to fig. 1, the filler 3 is a polyester yarn.

Referring to fig. 1, the shielding layer 4 is formed by weaving a composite tape of tinned copper wire and aluminum foil.

Referring to fig. 1, the armor layer 6 is formed by overlapping and wrapping copper strips, and the wrapping and covering rate is not less than 70%.

Referring to fig. 1, the sheath layer 7 is a crosslinked polyethylene sheath.

The utility model discloses when using, through be provided with fire prevention winding area 102 outside cable core conductor 101, fire prevention winding area 102 is the fire-resistant winding area of porcelainized silicon rubber fire prevention, the fire-resistant winding area of porcelainized silicon rubber fire prevention is under 550 ℃ -3100 ℃, the hard, complete casing of rapid firing ceramic form, hard casing armor after the burning plays fine guard action to the circuit, guarantee the unblocked of circuit under the conflagration condition, the density of porcelainized silicon rubber fire-resistant winding area is lower simultaneously, do not absorb water, do not absorb moisture, the material itself is soft under the normality, good elasticity, intensity is high, mechanical properties is good, electric insulation performance is excellent, it is excellent to wrap the compact type and the sealing performance of package and indulging; the fireproof layer 5 is arranged in the cable, and the fireproof layer 5 is made of thermoplastic vulcanized rubber materials, so that the thermoplastic vulcanized rubber has excellent high-temperature resistance and can effectively improve the fireproof and high-temperature resistance of the cable; the polyimide composite tape is arranged on the wrapping tape layer 2, so that the polyimide composite tape has the best radiation resistance and low density, the weight and space of the electric wire and the electric cable can be greatly reduced, the electric arc resistance, hydrolysis resistance, radiation resistance and space stability of the polyimide composite tape are good, and the mechanical strength and chemical stability are strong, so that the polyimide composite tape is a good wrapping tape material; through being provided with many tensile ropes 8 in the inside of cable, tensile rope 8 is twisted by many aramid fiber silk and forms, and aramid fiber silk has excellent properties such as high temperature resistant, acid and alkali resistant, light in weight, and aramid fiber silk has good intensity and toughness simultaneously, can improve the tensile resistance of cable effectively.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides an optical fiber composite power cable, includes many cable cores (1), its characterized in that: a plurality of cable cores (1) are mutually twisted, each cable core (1) sequentially comprises a cable core conductor (101), a fireproof winding belt (102) and an insulating layer (103) from inside to outside, each fireproof winding belt (102) is a ceramic silicon rubber fireproof winding belt, a winding belt layer (2) is arranged at the outer end of each cable core (1), each winding belt layer (2) is a polyimide composite belt, a filler (3) is filled in a gap between each winding belt layer (2) and each cable core (1), a shielding layer (4) is arranged on the outer side of each winding belt layer (2), a fireproof layer (5) is arranged on the outer side of each shielding layer (4), each fireproof layer (5) is made of thermoplastic vulcanized rubber materials, an armor layer (6) is arranged on the outer side of each fireproof layer (5), and a sheath layer (7) is arranged on the outer side of each armor layer (6), a plurality of tensile ropes (8) are arranged inside the filler (3), and the tensile ropes (8) are formed by twisting a plurality of aramid fibers.

2. The fiber optic composite power cable of claim 1, wherein: the cable core conductor (101) is made of annealed copper wires, a tin coating is arranged on the outer side of each copper wire, and the thickness of the tin coating is 1 mm.

3. The fiber optic composite power cable of claim 1, wherein: the insulating layer (103) is formed by extruding and wrapping polyethylene materials.

4. The fiber optic composite power cable of claim 1, wherein: the filler (3) is polyester yarn.

5. The fiber optic composite power cable of claim 1, wherein: the shielding layer (4) is formed by mixing and weaving tinned copper wires and aluminum foil composite tapes.

6. The fiber optic composite power cable of claim 1, wherein: the armor layer (6) is formed by lapping and overlapping copper strips, and the lapping and overlapping rate is not less than 70%.

7. The fiber optic composite power cable of claim 1, wherein: the sheath layer (7) is a cross-linked polyethylene sheath.

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