CN215911241U

CN215911241U - Compound steel-cored aluminum aerial cable

Info

Publication number: CN215911241U
Application number: CN202122266721.5U
Authority: CN
Inventors: 李志强; 张宾宾; 刘美帅; 李畅
Original assignee: Henan Qingzhou Cable Co ltd
Current assignee: Henan Qingzhou Cable Co ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-02-25
Anticipated expiration: 2031-09-18

Abstract

The utility model discloses a composite steel-cored aluminum aerial cable which sequentially comprises a reinforcing core, a first wrapping layer, a first conductor layer, a second conductor layer, a flame-retardant filling core, a second wrapping layer and an outer sheath from inside to outside, wherein a first shockproof salient point is arranged on the inner wall of the first conductor layer, a second shockproof salient point is arranged on the inner wall of the second conductor layer, the flame-retardant filling core is uniformly surrounded on the outer wall of the second conductor layer, and water-blocking ointment is arranged in gaps among the flame-retardant filling core, the second conductor layer and the second wrapping layer. The utility model has the advantages of water resistance, flame retardance, fire resistance, corrosion resistance and the like under the condition of avoiding the damage of the cable caused by wind and vibration, has extremely strong shock resistance, prolongs the service life of the cable, and avoids the potential safety hazard of power supply.

Description

Compound steel-cored aluminum aerial cable

The technical field is as follows:

the utility model relates to an overhead cable, in particular to a composite steel-cored aluminum overhead cable.

Background art:

the overhead transmission cable has the characteristics of multiple points, long line and wide area and is easily restricted by a plurality of factors; traditional aluminium steel core aerial [ insulated ] cable, steel core and aluminium lamination are direct contact in the cable, can have following problem: when the wire is exposed to the atmosphere with certain humidity in windy and rainy days, the surface layer of the steel wire is corroded; and the long-term frequent wind-blowing vibration can lead the wire to be fatigue-broken, thereby influencing the normal operation of the power transmission line.

The utility model has the following contents:

the technical problem to be solved by the utility model is as follows: the defects of the prior art are overcome, the composite steel-cored aluminum overhead cable is provided, the problem that the traditional steel-cored aluminum overhead cable is corroded and broken naturally is solved, the composite steel-cored aluminum overhead cable has the characteristics of fire resistance, water resistance, corrosion resistance and the like, and the normal operation of cable power transmission is guaranteed.

The technical scheme adopted by the utility model for solving the technical problem is as follows:

the utility model provides a compound aluminium-steel-cored aerial cable, from interior to exterior is including strengthening the core, first around covering, first conductor layer, second conductor layer, fire-retardant packing core, second around covering and oversheath in proper order, the inner wall of first conductor layer is provided with first shockproof bump, the inner wall of second conductor layer is provided with the shockproof bump of second, the even encircleing of outer wall of second conductor layer has fire-retardant packing core, and is provided with the oleamen that blocks water around the gap department of covering at fire-retardant packing core and second conductor layer and second.

The first conductor layer and the second conductor layer are formed by tightly twisting a plurality of 1350 aluminum conductors, and the cross section of each layer of aluminum conductor is trapezoidal.

The number of the first shockproof salient points and the number of the second shockproof salient points are at least four, and the first shockproof salient points and the second shockproof salient points are uniformly distributed on the inner wall of the corresponding conductor layer; the inner wall of the first shockproof salient point is tightly attached to the outer wall of the first wrapping layer, and a first filling layer is arranged at a gap between the first shockproof salient point and the first wrapping layer as well as between the first shockproof salient point and the first conductor layer; the inner wall of the second shockproof salient point is tightly attached to the outer wall of the first conductor layer, and a second filling layer is arranged at a gap between the second shockproof salient point and the first conductor layer and between the second shockproof salient point and the second conductor layer.

The first filling layer and the second filling layer are both made of polystyrene foam.

The flame-retardant filling core is made of a flame-retardant high-density polyethylene high polymer material.

The first wrapping layer and the second wrapping layer are both formed by wrapping calcined mica tapes.

The outer sheath is formed by extruding TPU elastomer cable materials.

The utility model has the following positive beneficial effects:

the cable has the advantages of water resistance, flame retardance, fire resistance, corrosion resistance and the like, can avoid the condition of cable damage caused by wind blowing and vibration, has strong shock resistance, prolongs the service life of the cable, and avoids the potential safety hazard of power supply.

Compared with the common cable, the key technology of the utility model is innovated in the following points:

firstly, a first wrapping layer and a second wrapping layer: the insulation material is formed by wrapping a calcined mica tape, is a nano-scale inorganic material, has the temperature resistance level of 1050 ℃, removes crystal water and impurities with voltage and temperature resistance at high temperature, generates a compact conductor protective shell with sio2 as a main body structure in the combustion process, effectively improves the fire resistance, and has the performances of corrosion resistance, high insulation and the like.

The first filling layer and the second filling layer: the steel core and the wire layer are both polystyrene foam, the steel core and the wire layer are isolated, or the adjacent wire layer is isolated, the shock-proof salient points are matched for use, the shock-proof effect is achieved, and meanwhile, the situation that corrosion occurs in the gap between the steel core and the first wire layer and in the gap between the first wire layer and the second wire layer is avoided.

③ flame-retardant filling core: adopt fire-retardant high density polyethylene macromolecular material processing to form, the corruption of acidproof, alkali and various salts is little, the hydroscopicity to the permeability of vapor and air is low, can prevent that the conductor from taking place to corrode, and the use of the oleamen that blocks water is coordinated makes second conductor layer, fire-retardant filling core, second around the covering, glues together, has waterproof, dampproofing effect, avoids the outside condition of corroding of appearing of second conductor layer simultaneously.

Fourthly, the outer sheath: the cable is formed by extruding and wrapping TPU elastomer cable materials, belongs to environment-friendly materials, and has good extrusion performance and excellent processing performance, so that the cable is ensured to have good wear-resisting and pressure-resisting performance, tear-resisting performance and good elasticity, and simultaneously has certain oil resistance and corrosion resistance.

Description of the drawings:

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

The specific implementation mode is as follows:

the utility model will be further explained and explained with reference to the drawings and the specific embodiments:

example (b): referring to fig. 1, a composite steel-cored aluminum aerial cable sequentially comprises a reinforced core 1, a first winding layer 2, a first conductor layer 3, a second conductor layer 4, a flame-retardant filling core 5, a second winding layer 6 and an outer sheath 7 from inside to outside, wherein a first shockproof bump 8 is arranged on the inner wall of the first conductor layer 3, a second shockproof bump 9 is arranged on the inner wall of the second conductor layer 4, the flame-retardant filling core 5 is uniformly wound on the outer wall of the second conductor layer 4, and a water-blocking ointment 12 is arranged at a gap between the flame-retardant filling core 5 and the second conductor layer 4 and between the flame-retardant filling core 5 and the second winding layer 6.

The first conductor layer 3 and the second conductor layer 4 are formed by tightly twisting a plurality of 1350 aluminum wires, and the cross section of each layer of aluminum wires is trapezoidal.

The number of the first shockproof salient points 8 and the number of the second shockproof salient points 9 are at least four, and the first shockproof salient points and the second shockproof salient points are uniformly distributed on the inner wall of the corresponding conductor layer; the inner wall of the first shockproof salient point 8 is tightly attached to the outer wall of the first wrapping layer 2, and a first filling layer 10 is arranged in a gap between the first shockproof salient point 8 and the first wrapping layer 2 as well as between the first shockproof salient point and the first conductor layer 3; the inner wall of the second anti-vibration bump 9 is tightly attached to the outer wall of the first conductor layer 3, and a second filling layer 11 is arranged in a gap between the second anti-vibration bump 9 and the first conductor layer 3 and the second conductor layer 4.

The first filling layer 10 and the second filling layer 11 are both formed by filling polystyrene foam.

The flame-retardant filling core 5 is made of a flame-retardant high-density polyethylene high polymer material.

The first wrapping layer 2 and the second wrapping layer 6 are both formed by wrapping calcined mica tapes.

The outer sheath 7 is formed by extruding TPU elastomer cable materials.

The utility model has the advantages of water resistance, flame retardance, fire resistance, corrosion resistance and the like under the condition of avoiding the damage of the cable caused by wind and vibration, has extremely strong shock resistance, prolongs the service life of the cable, and avoids the potential safety hazard of power supply.

Claims

1. The utility model provides a compound steel core aluminium air cable which characterized in that: compound aluminium-steel-cored aerial cable from interior to exterior in proper order including strengthening core (1), first winding covering (2), first conductor layer (3), second conductor layer (4), fire-retardant packing core (5), second around covering (6) and oversheath (7), the inner wall of first conductor layer (3) is provided with first bump (8) of taking precautions against earthquakes, the inner wall of second conductor layer (4) is provided with second bump (9) of taking precautions against earthquakes, the even encircleing of outer wall of second conductor layer (4) has fire-retardant packing core (5), and is provided with water-blocking factice (12) in fire-retardant packing core (5) and second conductor layer (4) and second around the gap department of covering (6).

2. The composite aluminum-steel-cored overhead cable according to claim 1, wherein: the first conductor layer (3) and the second conductor layer (4) are formed by tightly twisting a plurality of 1350 aluminum wires, and the cross section of each aluminum wire is trapezoidal.

3. The composite aluminum-steel-cored overhead cable according to claim 1, wherein: the number of the first shockproof salient points (8) and the number of the second shockproof salient points (9) are at least four, and the first shockproof salient points and the second shockproof salient points are uniformly distributed on the inner wall of the corresponding conductor layer; the inner wall of the first shockproof salient point (8) is tightly attached to the outer wall of the first wrapping layer (2), and a first filling layer (10) is arranged in a gap between the first shockproof salient point (8) and the first wrapping layer (2) as well as between the first shockproof salient point and the first conductor layer (3); the inner wall of the second shockproof salient point (9) is tightly attached to the outer wall of the first conductor layer (3), and a second filling layer (11) is arranged in a gap between the second shockproof salient point (9) and the first conductor layer (3) and between the second shockproof salient point and the second conductor layer (4).

4. The composite aluminum-steel-cored overhead cable according to claim 3, wherein: the first filling layer (10) and the second filling layer (11) are both made of polystyrene foam.

5. The composite aluminum-steel-cored overhead cable according to claim 1, wherein: the flame-retardant filling core (5) is made of a flame-retardant high-density polyethylene high polymer material.

6. The composite aluminum-steel-cored overhead cable according to claim 1, wherein: the first wrapping layer (2) and the second wrapping layer (6) are both formed by wrapping calcined mica tapes.

7. The composite aluminum-steel-cored overhead cable according to claim 1, wherein: the outer sheath (7) is formed by extruding TPU elastomer cable materials.