CN216528142U - Overhead power cable with steel core - Google Patents

Abstract

The utility model discloses an overhead power cable with a steel core, which belongs to the technical field of cable manufacturing and comprises: the cable comprises an insulating cable core and a plurality of conductors, wherein the insulating cable core comprises a round hollow insulating layer, a cylindrical steel core arranged in a hollow structure of the insulating layer, and the plurality of conductors are arranged in the hollow structure of the insulating layer and are stranded on the periphery of the steel core; the cable comprises a lapping layer, a plurality of insulating cable cores and a plurality of insulating cable cores, wherein the lapping layer is of a round hollow structure, the insulating cable cores are arranged in the hollow structure of the lapping layer, and gaps are formed between the insulating cable cores and the lapping layer; and the filling material is arranged in a gap between the insulating cable core and the wrapping layer. The strip steel core overhead power cable provided by the utility model has the advantages of high flexibility, strong practicability and low laying cost, and can still be normally used in a cold environment.

Description

Overhead power cable with steel core

Technical Field

The utility model relates to the technical field of cable manufacturing, in particular to an overhead power cable with a steel core.

Background

The overhead cable is a new power transmission mode between an overhead conductor and an underground cable.

Among the prior art, when power line need make somebody a mere figurehead to lay, adopt aerial insulated cable's mode to lay usually, but only the insulating layer usually on aerial insulated cable's the surface, there is not the sheath to protect the cable, consequently need design special aerial line when laying aerial insulated cable, also need keep the certain distance between the phase line, need set up aerial corridor and lay aerial insulated cable, if do not have when sufficient space laying aerial insulated cable, just can't lay aerial insulated cable, change to and lay ordinary power cable, but ordinary power cable is unsuitable aerial laying again. In addition, the overhead insulated cable is in long-term contact with trees, and safety accidents are easily caused by insulation damage.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides an overhead power cable with a steel core, comprising: the insulation cable core comprises a round hollow insulation layer, a cylindrical steel core arranged in the hollow structure of the insulation layer, and a plurality of conductors arranged in the hollow structure of the insulation layer and stranded on the periphery of the steel core; the winding layer is of a round hollow structure, the insulating cable cores are arranged in the hollow structure of the winding layer, and gaps are reserved between the insulating cable cores and the winding layer; and the filling material is arranged in a gap between the insulating cable core and the wrapping layer.

Preferably, the overhead power cable with a steel core further includes: the sheath layer is sleeved on the periphery of the wrapping layer.

Preferably, the steel core is a galvanized steel wire or a galvanized steel strand.

Preferably, the conductor is an aluminum wire or an aluminum alloy wire.

Preferably, the wrapping layer is made of polypropylene tape or non-woven fabric or a flame-retardant bag.

Preferably, the material of the insulating layer is polyvinyl chloride or cross-linked polyethylene.

Preferably, the material of the sheath layer is polyvinyl chloride or polyethylene.

Preferably, the material of the filling material is a flame retardant material.

Preferably, the material of the filling material is polypropylene.

Preferably, the galvanized steel wire is a solid galvanized steel wire.

By adopting the technical scheme, the utility model mainly has the following technical effects:

1. through set up the steel core in insulating cable core, utilize the tensile strength of steel core reinforcing cable, when laying taking steel core overhead power cable for the pole between the pole is apart from can being bigger, has reduced the intensity that operating personnel laid work on the one hand, and on the other hand has reduced and has laid the cost.

2. Through the restrictive coating of establishing in the periphery around the covering, utilize the restrictive coating to protect insulating cable core effectively on the one hand, on the other hand can also insulate between conductor and the external environment effectively, thereby make the method of laying of taking steel core aerial power cable lay or lay with the pole on other poles of laying the cable by pasting the wall, and then make operating personnel need not erect the pole alone when laying taking steel core aerial power cable, strengthened the flexibility and the practicality of laying the cable, and reduced the laying cost.

3. Through setting up restrictive coating and the insulating layer that has excellent low temperature resistance to cooperate through restrictive coating and insulating layer, make take steel core overhead power cable still can normal use in cold environment.

Drawings

Fig. 1 is a schematic structural diagram of an overhead power cable with a steel core according to the present invention.

Wherein the reference numerals have the following meanings:

1. wrapping a covering; 11. a first accommodating cavity;

2. insulating the cable core; 21. an insulating layer; 211. a second accommodating cavity; 22. a steel core; 23. a conductor;

3. a filler material;

4. a sheath layer.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the specification of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the utility model. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, the utility model provides an overhead power cable with a steel core, which comprises a round hollow wrapping layer 1 and a plurality of round insulating cable cores 2 arranged in a hollow structure of the wrapping layer 1.

Further, the wrapping layer 1 is of a circular hollow structure, the hollow part of the wrapping layer is a first cylindrical accommodating cavity 11, the insulating cable core 2 is also of a circular structure, and the insulating cable core 2 is axially arranged along the first cylindrical accommodating cavity 11. The winding layer 1 can enable the plurality of insulation cable cores 2 to keep a cylindrical structure in the first accommodating cavity 11, so that the insulation cable 2 is prevented from being loose, and the insulation cable cores 2 can be insulated, anti-aging, buffered and protected. In a preferred embodiment, the material of the wrapping tape layer 1 is polypropylene tape, non-woven fabric, flame-retardant wrapping tape or the like.

The insulating cable core 2 comprises a round hollow insulating layer 21, a cylindrical steel core 22 arranged in a hollow structure of the insulating layer 21, and a plurality of conductors 23 arranged in the hollow structure of the insulating layer 21 and tightly twisted on the periphery of the steel core 22.

Further, the insulating layer 21 is also a circular hollow structure, the hollow portion of the insulating layer is a cylindrical second accommodating cavity 211, the steel core 22 and the conductors 23 are both disposed in the second accommodating cavity 211, on one hand, the steel core 22 is used for supporting the insulating cable core 2 and enhancing the tensile property of the insulating cable core 2, so as to enhance the tensile property of the overhead power cable with the steel core, and on the other hand, the plurality of conductors 23 can be twisted on the steel core 22 to avoid the loose conductors 23. In an alternative embodiment of the present invention, the steel core 22 is disposed along an axial direction of the second accommodating cavity 211, and is located at a center of the second accommodating cavity 211, and the plurality of conductors 23 are stranded on an outer circumference of the steel core 22 with the steel core 22 as an axis. In a preferred embodiment of the present invention, the insulating layer is made of plastic such as polyvinyl chloride or cross-linked polyethylene, the steel core 22 is a galvanized steel wire or a galvanized steel strand, and the conductor 23 is an aluminum wire or an aluminum alloy wire.

Further, after the tensile property through reinforcing cable for taking steel core aerial [ insulated ] cable when laying, compare ordinary aerial [ insulated ] cable that stands still, support pole distance between the pole of taking steel core aerial [ insulated ] cable can be bigger, has reduced the intensity that operating personnel laid work on the one hand, and on the other hand can also reduce and lay the cost. In addition, in order to ensure the tensile property of the insulated cable core 2, the galvanized steel wire is a solid galvanized steel wire.

Further, when one or more insulating cable cores 2 are arranged in the hollow wrapping layer 1, because the diameter of the round insulating cable core 2 is smaller than that of the round wrapping layer 1, a gap still exists between the insulating cable core 2 and the wrapping layer 1. For filling the clearance, still be equipped with filler 3 in the clearance, filler 3 not only can fill the insulating cable core 2 on the one hand and around the clearance between the covering 1, on the other hand can also have the guard action to locating the insulating cable core 2 in the covering 1. In an alternative embodiment of the present invention, the filling material is a flame retardant material, and in a preferred embodiment of the present invention, the material of the filling material is polypropylene.

Further, a sheath layer 4 is further sleeved on the periphery of the winding layer 1, and after the sheath layer 4 is arranged, on one hand, the insulating cable core 2 can be effectively protected, and on the other hand, the conductor 23 can be effectively insulated from the external environment, so that the method for laying the steel-cored overhead power cable can be applied to wall-mounted laying or the same pole laying on other poles on which the cables are laid, further, an operator does not need to independently erect the poles when laying the steel-cored overhead power cable, the flexibility and the practicability of laying the cables are enhanced, and the laying cost is reduced. In a preferred embodiment of the present invention, the material of the sheath layer 4 is polyvinyl chloride or plastic such as polyethylene, and the plastic such as polyethylene is used as the material of the sheath layer 4, so that the sheath layer 4 has excellent low temperature resistance, and at the same time, the sheath layer 4 is matched with the insulating layer 21 which also has excellent low temperature resistance, so that the overhead power cable with the steel core can still be normally used in a cold environment.

Finally, it should be noted that: the embodiment of the present invention is disclosed only as a preferred embodiment of the present invention, which is only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a take steel core overhead power cable which characterized in that includes:

the insulation cable core comprises a round hollow insulation layer, a cylindrical steel core arranged in the hollow structure of the insulation layer, and a plurality of conductors arranged in the hollow structure of the insulation layer and stranded on the periphery of the steel core;

the winding layer is of a round hollow structure, the insulating cable cores are arranged in the hollow structure of the winding layer, and gaps are reserved between the insulating cable cores and the winding layer;

and the filling material is arranged in a gap between the insulating cable core and the wrapping layer.

2. The overhead power cable with steel core of claim 1, further comprising:

the sheath layer is sleeved on the periphery of the wrapping layer.

3. The overhead power cable with steel core according to claim 2, wherein the steel core is galvanized steel wire or galvanized steel strand.

4. The overhead power cable with steel core according to claim 3, wherein the conductor is an aluminum wire or an aluminum alloy wire.

5. The overhead power cable with steel core according to claim 4, wherein the wrapping layer is made of polypropylene tape, non-woven fabric or flame retardant package.

6. The overhead power cable with steel core according to claim 4, wherein the material of the insulating layer is polyvinyl chloride or cross-linked polyethylene.

7. The overhead power cable with steel core according to claim 6, wherein the material of the sheath layer is polyvinyl chloride or polyethylene.

8. The overhead power cable with steel core according to claim 4, wherein the material of the filler material is a flame retardant material.

9. The overhead power cable with steel core according to claim 8, wherein the material of the filler material is polypropylene.

10. The overhead power cable with steel core according to claim 3, wherein the galvanized steel wires are solid galvanized steel wires.

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