CN215496088U

CN215496088U - Salt fog-proof, seawater-resistant and impact-proof photoelectric composite cable

Info

Publication number: CN215496088U
Application number: CN202121193382.6U
Authority: CN
Inventors: 吕志亮; 翟立锋; 李磊; 仲月; 张明磊
Original assignee: Shuangdeng Cable Co Ltd
Current assignee: Shuangdeng Cable Co Ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2022-01-11
Anticipated expiration: 2031-05-31

Abstract

The utility model discloses a salt mist-proof, seawater-resistant and impact-proof photoelectric composite cable, which relates to the field of electric power and comprises a lead and an optical fiber, wherein the lead comprises a conductor inner core, a conductor shielding layer, an insulation shielding layer and a metal shielding layer which are sequentially arranged from inside to outside, and the salt mist-proof, seawater-resistant and impact-proof photoelectric composite cable also comprises: the band, wire and optic fibre are arranged in the band, and the outside of band is equipped with the inside lining waterproof layer, and the outside of inside lining waterproof layer is equipped with synthesizes the waterproof layer, and the outside of synthesizing the waterproof layer is equipped with waterproof separation cover, and waterproof separation cover's outside is equipped with the armor, and the outside that the outside of armor was equipped with the anticorrosive coating is equipped with outer inoxidizing coating. According to the utility model, the comprehensive waterproof layer, the armor layer anticorrosive layer and the buffer layer are arranged, so that the cable has excellent effects of seawater prevention, salt mist prevention, corrosion resistance and impact protection, and the composite cable can have various resistances and long service life when being applied outdoors.

Description

Salt fog-proof, seawater-resistant and impact-proof photoelectric composite cable

Technical Field

The utility model relates to the field of electric power, in particular to a salt fog-proof, seawater-resistant and impact-proof photoelectric composite cable.

Background

In recent years, the requirements on salt mist resistance and seawater resistance of wind power and photovoltaic cables are higher and higher, and the requirements are mainly limited to the application of submarine cables and umbilical cables before. With the deepening of research and understanding on salt fog resistance, water absorption and water tree resistance of cables, people are aware of the importance of salt fog resistance and seawater resistance on power cables. Wind power and photovoltaic systems in shallow sea areas are subjected to salt spray and seawater erosion throughout the year, and more users put forward requirements on radial seawater resistance and salt spray prevention on cables to prevent water from permeating into the sheaths. In addition, most cables are installed outdoors, and need to have certain impact protection capability due to the complex outdoor environment.

Not only power cables but also optical fiber cables are required to have salt fog resistance and seawater resistance, but the existing optical cables have poor salt fog resistance and seawater resistance, and are required to be further improved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a salt-fog-resistant, seawater-resistant and impact-resistant photoelectric composite cable, which solves the problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides an anti-salt fog, resistant sea water, photoelectric cables who protecting against shock, includes wire and optic fibre, the wire includes conductor inner core, conductor shielding layer, insulation shielding layer and the metal shielding layer that sets gradually from inside to outside, still includes:

the band, wire and optic fibre are arranged in the band, and the outside of band is equipped with the inside lining waterproof layer, and the outside of inside lining waterproof layer is equipped with synthesizes the waterproof layer, and the outside of synthesizing the waterproof layer is equipped with waterproof separation sleeve, and waterproof separation sleeve's outside is equipped with the armor, and the outside that the outside of armor was equipped with the anticorrosive coating is equipped with outer inoxidizing coating, is equipped with the buffer layer between outer inoxidizing coating and the anticorrosive coating, the armor includes along the cable outside many galvanized steel wires that encircle setting up and circumference distribution, the anticorrosive coating is including coating in the outside pitch of armor, be equipped with an gasbag in the buffer layer, equal fixedly connected with connecting pipe between per two adjacent gasbags.

As a preferable technical solution of the present invention, one or three conducting wires are provided in the wrapping tape.

As a preferred technical solution of the present invention, an insulating layer is disposed between the conductor shielding layer and the insulating shielding layer.

In a preferred embodiment of the present invention, the conductive shield is an extruded semiconductive layer, and the extruded semiconductive material is a cross-linked material.

As a preferred technical solution of the present invention, the metal shielding layer includes a soft copper strip that is overlapped and wound outside the insulation shielding layer.

As a preferred technical scheme of the utility model, the comprehensive waterproof layer comprises an aluminum-plastic composite belt arranged along the length direction of the cable, and polyethylene is extruded outside the aluminum-plastic composite belt.

The utility model has the following advantages: according to the utility model, the comprehensive waterproof layer, the armor layer anticorrosive layer and the buffer layer are arranged, so that the cable has excellent effects of seawater prevention, salt mist prevention, corrosion resistance and impact protection, and the composite cable can have various resistances and long service life when being applied outdoors.

Drawings

Fig. 1 is a schematic structural diagram of a salt-fog-proof, seawater-resistant and impact-proof photoelectric composite cable.

In the figure: 1. a conductor inner core; 2. a conductor shield layer; 3. an insulating layer; 4. an insulating shield layer; 5. a metal shielding layer; 6. wrapping belts; 7. lining waterproof layer; 8. a comprehensive waterproof layer; 9. an optical fiber; 10. a waterproof isolation sleeve; 11. an armor layer; 12. an anticorrosive layer; 13. an outer protective layer; 14. a buffer layer; 15. an air bag; 16. and (4) connecting the pipes.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Example 1

Please refer to fig. 1, 26/35kV 3 × 95mm²The specification is for example, a salt fog prevention, resistant sea water, photoelectric cables who protecting against shock, including wire and optic fibre 9, the wire includes conductor inner core 1, conductor shielding layer 2, insulating shielding layer 4 and the metal shielding layer 5 that sets gradually from inside to outside, still includes:

band 6, wire and optic fibre 9 are arranged in band 6, and the outside of band 6 is equipped with inside lining waterproof layer 7, and inside lining waterproof layer 7's outside is equipped with synthesizes waterproof layer 8, and the outside of synthesizing waterproof layer 8 is equipped with waterproof separation sleeve 10, and the outside of waterproof separation sleeve 10 is equipped with armor 11, and the outside that armor 11's outside was equipped with anticorrosive coating 12 is equipped with outer inoxidizing coating 13, is equipped with buffer layer 14 between outer inoxidizing coating 13 and the anticorrosive coating 12.

Wherein, the conductor inner core 1 is a copper conductor. The surface of the conductor inner core 1 is smooth and clean, has no oil stain, has no damage to shielding and insulating burrs and sharp edges, and has no single line with bulges or fractures.

The insulation shielding layer 4 is an extruded semi-conductive layer, and the extruded semi-conductive material is a cross-linking type material. The semiconductive layer was smooth and free of sharp corners, particles, scorch and scratches.

One or three wires are arranged in the wrapping tape 6. The lapping overlapping rate of the wrapping tape 6 is not less than 20%.

The conductor shielding layer 2 is an extruded semi-conductive layer, and the extruded semi-conductive material is a cross-linking type material.

The metal shielding layer 5 comprises a soft copper strip which is wound outside the insulating shielding layer 4 in an overlapping manner.

The lining waterproof layer 7 is formed by extruding polyethylene sheath materials. The comprehensive waterproof layer 8 comprises an aluminum-plastic composite belt arranged along the length direction of the cable, and polyethylene is extruded outside the aluminum-plastic composite belt. The polyethylene extrusion should be smooth, round, free of coke, pimples, air holes, sand holes, cracks and other defects.

The waterproof isolation sleeve 10 is formed by extruding medium-density polyethylene. The polyethylene extrusion should be smooth, round, free of coke, pimples, air holes, sand holes, cracks and other defects.

The anti-corrosion layer 12 comprises asphalt coated outside the armor layer 11, the thickness of the asphalt is not less than 0.20mm, and the asphalt is in accordance with the specification of SH/T0001 Cable asphalt.

The outer protective layer 13 is formed by extruding medium density polyethylene sheath material, and the polyethylene performance meets the GB/T15065-2009 regulations, and also requires salt mist resistance and seawater resistance.

The buffer layer 14 is internally provided with a plurality of air bags 15, and a connecting pipe 16 is fixedly connected between every two adjacent air bags 15.

When the cable receives unilateral impact, gasbag 15 can cushion the impact, receives the gasbag 15 of impact position to be compressed, because the inside all intercommunication of a plurality of gasbags 15, receives in the gasbag 15 of impact department partial gas can get into other gasbags 15, the inside atmospheric pressure of other gasbags 15 increases, after receiving the impact, realizes gasbag 15 restoration under the effect of atmospheric pressure.

In a more preferred embodiment, the gas in the air bag 15 can be carbon dioxide, and when the cable burns due to overheating or burning caused by external factors, the carbon dioxide gas is released to extinguish the fire.

Example 2

Referring to fig. 1, the other contents of the present embodiment are the same as those of embodiment 1, except that: an insulating layer 3 is arranged between the conductor shielding layer 2 and the insulating shielding layer 4. The insulating layer 3 is made of cross-linked polyethylene materials, is tightly extruded and has a flat surface, the nominal value of the insulating thickness is 10.5mm, and the thickness of the thinnest point at any position of the insulating layer is not less than 90-0.1 mm of the nominal value. The eccentricity of the insulation is not more than 15%.

The armor layer 11 comprises a plurality of galvanized steel wires which are arranged around the outside of the cable and distributed circumferentially. The total clearance of the galvanized steel wires is not more than the diameter of one steel wire. The steel wire should comply with the regulations of GB/T3082-2020.

The cable of the utility model has the following performance indexes:

1. general characteristic index: meets the standard requirements of GB/T12706-.

2. The indirect assessment indexes of the radial waterproof test are as follows:

and (3) inflation test: and (3) charging 50-100 Pa dry air or nitrogen, and then balancing for 6 hours, wherein the air pressure at any end of the cable is not reduced.

3. The waterproof test of the outer coating of the comprehensive waterproof layer of the finished cable passes the water permeability test specified in the GB/T12706.3-2020, clause 19.22.

4. The average peel strength of any part between the PE sheath of the comprehensive waterproof layer and the aluminum-plastic composite tape is not less than 0.5N/mm at 20 ℃ (the test method is the requirement of appendix F in GB/T12706.3-2020).

5. Salt spray prevention test: the salt spray resistance test of the cable refers to the standard requirement of GB/T2423.

6. Seawater resistance test: the method comprises the following steps of sealing two ends of a 5-meter long cable sample, placing the cable sample in seawater in a natural environment of a coastal sea area, soaking for 30 days, and meeting the following requirements after soaking:

(1) carrying out voltage resistance on the cable according to a test method of GB/T3048, wherein the test voltage and time meet the requirements of GB/T12706;

(2) insulation resistance (20 ℃) is not less than 100 MOmega-km;

(3) the tensile strength and elongation at break retention rate of the insulation and the sheath are more than or equal to 80 percent;

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 changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. 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

1. The utility model provides an anti-salt fog, resistant sea water, photoelectric composite cable of protecting against shock, includes wire and optic fibre, its characterized in that, the wire includes conductor inner core, conductor shielding layer, insulating shielding layer and the metallic shield layer that sets gradually from inside to outside, still includes:

2. The salt-fog-resistant, seawater-resistant, and impact-resistant photoelectric composite cable according to claim 1, wherein one or three wires are provided in the clad.

3. The salt-fog-resistant, seawater-resistant, and impact-resistant photoelectric composite cable of claim 1, wherein an insulating layer is disposed between the conductor shielding layer and the insulating shielding layer.

4. The salt spray resistant, seawater resistant, and ballistic resistant photovoltaic composite cable of claim 1, wherein the conductor shield is an extruded semiconducting layer, and the extruded semiconducting material is a cross-linked material.

5. The salt spray resistant, seawater resistant, and ballistic resistant photoelectric composite cable of claim 3, wherein the metal shielding layer comprises a soft copper strip that is overlappingly wound outside the insulating shielding layer.

6. The salt spray resistant, seawater resistant and impact resistant photoelectric composite cable according to claim 1, wherein the comprehensive waterproof layer comprises an aluminum-plastic composite tape arranged along the length direction of the cable, and polyethylene is extruded outside the aluminum-plastic composite tape.