CN212874076U - Oil-resistant and ultraviolet-proof B1-level direct-current power cable - Google Patents

Abstract

The utility model discloses an resistant oily anti ultraviolet B1 level DC power cable, including conductor, insulating layer, waterproof layer, barrier layer and restrictive coating, the insulating layer cladding the conductor, the waterproof layer cladding the insulating layer, the barrier layer cladding the waterproof layer, the restrictive coating cladding the barrier layer, wherein, the restrictive coating adopts the fire-retardant polyolefin material of steamed low cigarette of nothing to make the cable have resistant oily characteristic, can place in aqueous for a long time, can use for a long time in the place that has the sunlight to shine, but anti-aging mouse gnaws and stings and the termite corrodes, can not produce harmful gas during the cable burning, can not produce the drippage, can reach ROHS's requirement.

Description

Oil-resistant and ultraviolet-proof B1-level direct-current power cable

Technical Field

The utility model relates to a cable especially relates to an resistant oily anti ultraviolet B1 level direct current power cable.

Background

At present, the scale of the domestic subway construction shows a steady rising trend, the demand for cables is gradually increased, and the quality requirements for the cables are gradually improved because the cables are corroded by external rats, ants, ultraviolet rays, oil stains and the like, the cables need to be properly insulated and protected, the cables are prevented from flowing to the surrounding ground or water from conductors in the radial direction, and the leakage current causes obvious power loss.

In order to avoid external corrosion of the cable, the external protective insulation of the cable needs to be improved to meet the requirement of quality safety.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned technique not enough, provide an resistant oily anti ultraviolet B1 level direct current power cable, solve among the prior art technical problem of cable external insulation erosion resistance ability.

In order to achieve the technical purpose, the technical scheme of the utility model a resistant oily anti ultraviolet B1 level DC power cable is provided, including conductor, insulating layer, waterproof layer, barrier layer and restrictive coating, the insulating layer cladding the conductor, the waterproof layer cladding the insulating layer, the barrier layer cladding the waterproof layer, the restrictive coating cladding the barrier layer, wherein, the restrictive coating adopts the low fire-retardant polyolefin material of steamed low cigarette to make.

Preferably, the waterproof layer comprises a longitudinal waterproof layer and a radial waterproof layer, and the longitudinal waterproof layer is coated by the radial waterproof layer.

Preferably, the barrier layer comprises an oxygen barrier layer and a flame-retardant wrapping layer, and the flame-retardant wrapping layer wraps the oxygen barrier layer.

Preferably, the conductor is an annealed copper wire.

Preferably, the insulating layer is made of irradiation type crosslinked polyethylene.

Preferably, the longitudinal water-blocking layer is a double-sided water-blocking tape.

Preferably, the radial waterproof layer is a double-sided aluminum-plastic composite belt.

Preferably, the oxygen barrier layer is made of polyolefin material.

Preferably, the flame-retardant wrapping tape layer is a low-smoke halogen-free flame-retardant glass fiber tape.

Compared with the prior art, the beneficial effects of the utility model include: the oil-resistant and ultraviolet-proof B1-level direct-current power cable comprises a conductor, an insulating layer, a waterproof layer, a barrier layer and a sheath layer, wherein the insulating layer coats the conductor to play an insulating role and prevent a conductor current from flowing out of the cable; the waterproof layer can prevent moisture outside the cable from entering the corrosion conductor; the barrier layer can block oxygen and has a flame retardant effect; the sheath layer is made of halogen-free low-smoke flame-retardant polyolefin material, carbon black is added into the material to play a role in ultraviolet resistance, the oxygen index is higher than 40, and the requirement of combustion performance B1 grade in GB31247-2014 can be met; no halogen element and heavy metal are contained in the sheath material, no harmful gas is generated during combustion, no drop is generated, and the ROHS requirement can be met.

Drawings

Fig. 1 is a schematic cross-sectional view of an embodiment of an oil-resistant and ultraviolet-proof B1-class dc power cable provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The utility model provides an resistant oily anti ultraviolet B1 level DC power cable 100, as shown in fig. 1, conductor 1, insulating layer 2, waterproof layer 3, barrier layer 4 and restrictive coating 5, the 2 cladding of insulating layer conductor 1, the 3 cladding of waterproof layer insulating layer 2, the 4 cladding of barrier layer waterproof layer 3, the 5 cladding of restrictive coating barrier layer 4, wherein, restrictive coating 5 adopts the low fire-retardant polyolefin material of halogen-free low cigarette to make.

The oil-resistant and ultraviolet-proof B1-level direct-current power cable 100 comprises a conductor 1, an insulating layer 2, a waterproof layer 3, a barrier layer 4 and a sheath layer 5, wherein the insulating layer 2 coats the conductor 1 to play an insulating role and prevent current of the conductor 1 from flowing out of the cable; the waterproof layer 3 can prevent moisture outside the cable from entering the corrosion conductor 1; the barrier layer 4 can block oxygen and has a flame retardant function; the sheath layer 5 is made of halogen-free low-smoke flame-retardant polyolefin material, carbon black is added into the material to play a role in ultraviolet resistance, the oxygen index is higher than 40, and the requirement of combustion performance B1 grade in GB31247-2014 can be met; no halogen element and heavy metal are contained in the sheath material, no harmful gas is generated during combustion, no drop is generated, and the ROHS requirement can be met.

The waterproof layer 3 comprises a longitudinal waterproof layer 31 and a radial waterproof layer 32, and the longitudinal waterproof layer 31 is coated by the radial waterproof layer 32. The utility model discloses a waterproof layer 3 includes two-layer, and radial waterproof layer 32 is waterproof from the radial of cable, and vertical waterproof layer 31 is waterproof from the vertical of cable, and two directions are waterproof simultaneously, and effectual keep apart outside moisture, effectual protection conductor 1, vertical water blocking layer 31 are two-sided water-blocking tape, and two-sided water-blocking tape material has fine longitudinal performance, absorbs water rapidly after meeting water and expands, can play the vertical effect of blocking water; the radial waterproof layer 32 is a double-sided aluminum-plastic composite tape, the radial waterproof layer is a double-sided aluminum-plastic composite tape, the longitudinal wrapping welding mode is adopted, the overlapping rate is more than 20%, and the radial water blocking effect can be achieved. Preferably, in this embodiment, the longitudinal waterproof layer 31 and the radial waterproof layer 32 may exchange positions, and the two waterproof layers may be disposed at will, and are suitable.

The barrier layer 4 comprises an oxygen-barrier layer 41 and a flame-retardant wrapping layer 42, and the flame-retardant wrapping layer 42 wraps the oxygen-barrier layer 41. The barrier layer 4 of the utility model is provided with two layers, namely an oxygen-isolating layer 41 and a flame-retardant bag layer 42, wherein the oxygen-isolating layer 41 is made of polyolefin material; the flame-retardant wrapping tape 42 is a low-smoke halogen-free flame-retardant glass fiber tape, 2 layers of the low-smoke halogen-free flame-retardant glass fiber tape are lapped and wrapped in an overlapping mode, and the overlapping rate is more than 30%; can play a good role in fire insulation and flame retardance. In this embodiment, the oxygen barrier layer 41 and the flame retardant band layer 42 may be exchanged in position, and the two barrier layers may be disposed at will, as appropriate.

The conductor 1 is an annealed copper wire and is made of a 5 th copper conductor in GB/T3956-2008. The 5 th copper conductor has very good electric energy transmission characteristics, and can improve the softness of the cable; the insulating layer is made of irradiation type cross-linked polyethylene, and has high insulation resistance and excellent aging resistance, so that the service life of the cable can be prolonged.

The insulating layer 2 of this embodiment is made of irradiation type crosslinked polyethylene, and has high insulation resistance and excellent aging resistance, so that the service life of the cable can be prolonged.

To sum up, the utility model discloses an resistant oily anti ultraviolet B1 level DC power cable can make the cable have resistant oily characteristic, can place in aqueous for a long time, can use for a long time in the place that has the sunlight to shine, but anti-aging mouse gnaws and stings and termite moths and erodees, can not produce harmful gas during the cable burning, can not produce the drippage, can reach ROHS's requirement.

The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims (7)

1. An oil-resistant ultraviolet-proof B1-level direct-current power cable is characterized by comprising a conductor, an insulating layer, a waterproof layer, a barrier layer and a sheath layer, wherein the insulating layer coats the conductor, the waterproof layer coats the insulating layer, the barrier layer coats the waterproof layer, and the sheath layer coats the barrier layer, wherein the sheath layer is made of halogen-free low-smoke flame-retardant polyolefin material; the waterproof layer comprises a longitudinal waterproof layer and a radial waterproof layer, and the longitudinal waterproof layer is coated by the radial waterproof layer; the barrier layer comprises an oxygen isolation layer and a flame-retardant wrapping tape layer, and the flame-retardant wrapping tape layer wraps the oxygen isolation layer.

2. The oil-resistant ultraviolet-proof B1 grade DC power cable according to claim 1, wherein the conductor is annealed copper wire.

3. The oil-resistant ultraviolet-proof B1 grade DC power cable according to claim 1, wherein the insulation layer is made of irradiation type crosslinked polyethylene.

4. The oil-resistant ultraviolet-proof B1 grade DC power cable according to claim 1, wherein the longitudinal water-blocking layer is a double-sided water-blocking tape.

5. The oil-resistant ultraviolet-proof B1 level DC power cable according to claim 1, wherein the radial waterproof layer is a double-sided aluminum-plastic composite tape.

6. The oil-resistant ultraviolet-proof B1 grade DC power cable according to claim 1, wherein the oxygen barrier layer is made of polyolefin material.

7. The oil-resistant ultraviolet-proof B1-grade DC power cable according to claim 1, wherein the flame-retardant wrapping tape is a low-smoke halogen-free flame-retardant glass fiber tape.

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