CN215496104U

CN215496104U - Novel special transmission cable for vertical wind power generation tower

Info

Publication number: CN215496104U
Application number: CN202121850311.9U
Authority: CN
Inventors: 卢二亮
Original assignee: Hebei Bailan Special Cable Co ltd
Current assignee: Hebei Bailan Special Cable Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-01-11
Anticipated expiration: 2031-08-10

Abstract

The utility model discloses a novel transmission cable special for a vertical wind power tower, which comprises a conductor and a sheath coated on the outer side of the conductor, wherein the conductor is formed by stranding a plurality of insulating core wires, a soft rubber extrusion layer is arranged between the insulating core wires and the sheath, and a flexible layer is arranged between the soft rubber extrusion layer and the sheath; a plurality of strip-shaped buffer cavities are uniformly arranged on the flexible layer at intervals along the circumferential direction, the symmetry axis of each strip-shaped buffer cavity is arranged along the radial direction of the cable, and buffer reinforcing cavities extending towards the inner side and/or the outer side of the cable are arranged at the two ends of each strip-shaped buffer cavity. The buffering strengthening cavity can improve the buffering capacity of the flexible layer and even the whole cable to a certain extent so as to resist larger impact deformation, and the width of the strip-shaped buffering cavity is narrower than that of the buffering strengthening cavity, so that a certain limiting effect can be achieved when the flexible layer deforms greatly, permanent deformation caused by excessive deformation of the flexible layer is avoided, and the service life of the cable is prolonged.

Description

Novel special transmission cable for vertical wind power generation tower

Technical Field

The utility model relates to the technical field of cables, in particular to a novel transmission cable special for a vertical wind power generation tower.

Background

Wind energy is taken as a clean renewable energy source, and is more and more taken into consideration by countries all over the world, wherein the wind power generation technology is mature, and a relatively common power generation form is taken as, when the power generation tower works, a transmission cable is used for indispensable needs, the flexibility of the transmission cable with the traditional structure and the bearing capacity to external force are not good enough (such as the capacity of bearing wind torsion), and the cable working environment for the power generation tower is relatively severe, so that the condition that the surface layer structure cracks easily appear in the long-time use process of the existing cable is caused, and the normal use of the cable is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to avoid the defects in the prior art and provides a novel special transmission cable for a vertical wind power tower, thereby effectively solving the defects in the prior art.

In order to achieve the purpose, the utility model adopts the technical scheme that: a novel transmission cable special for a vertical wind power tower comprises a conductor and a sheath coated on the outer side of the conductor, wherein the conductor is formed by stranding a plurality of insulating core wires, a soft rubber extrusion layer is arranged between the insulating core wires and the sheath, and a flexible layer is arranged between the soft rubber extrusion layer and the sheath;

a plurality of strip-shaped buffer cavities are uniformly arranged on the flexible layer at intervals along the circumferential direction, the symmetry axes of the strip-shaped buffer cavities are arranged along the radial direction of the cable, and buffer reinforcing cavities extending towards the inner side and/or the outer side of the cable are arranged at two ends of each strip-shaped buffer cavity;

and a plurality of glass fiber ropes are uniformly arranged in the flexible layer at intervals along the circumferential direction.

Furthermore, the side wall of the buffer reinforcing cavity is of a convex arc structure.

Furthermore, the insulating core wire comprises a core wire conductor and a polyvinyl chloride insulating sleeve coated on the outer side of the core wire conductor.

Further, the core conductor is a rare earth aluminum alloy conductor or a copper conductor.

Further, the sheath is a polyvinyl chloride insulating sheath.

Further, the thickness of the elongated buffer cavity is 1/6-1/2 of the thickness of the flexible layer.

Further, 20-40 elongated buffer cavities are arranged.

The technical scheme of the utility model has the following beneficial effects: according to the utility model, the structure that the strip-shaped buffer cavity and the buffer reinforcing cavity are combined is arranged on the flexible layer, the buffer reinforcing cavity can improve the buffer capacity of the flexible layer and even the whole cable to a certain extent, and further resist larger impact deformation, and the width of the strip-shaped buffer cavity is narrower than that of the buffer reinforcing cavity, so that a certain limiting effect can be achieved when the flexible layer is deformed greatly, permanent deformation caused by excessive deformation of the flexible layer is avoided, and the service life of the cable is prolonged.

Drawings

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

FIG. 2 is an enlarged view of a portion of FIG. 1 at A (first configuration);

FIG. 3 is a schematic structural diagram (second structure) of an embodiment of the present invention;

fig. 4 is a schematic structural diagram (third structure) of the embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the novel transmission cable dedicated for the vertical wind power tower in the embodiment includes a conductor and a sheath 1 coated outside the conductor, the conductor is formed by twisting a plurality of insulating core wires, a soft rubber extrusion layer 2 is arranged between the insulating core wires and the sheath, and a flexible layer 3 is arranged between the soft rubber extrusion layer 2 and the sheath 1;

a plurality of strip-shaped buffer cavities 301 are uniformly arranged on the flexible layer 3 at intervals along the circumferential direction, the symmetry axes of the strip-shaped buffer cavities 301 are arranged along the radial direction of the cable, and buffer reinforcing cavities 302 extending towards the inner side and/or the outer side of the cable are arranged at the two ends of the strip-shaped buffer cavities 301.

The elongated buffer chamber 301 and the buffer reinforcing chamber 302 are both arranged to penetrate in the longitudinal direction of the cable.

The glass fiber ropes 4 are uniformly arranged in the flexible layer 3 at intervals along the circumferential direction, the axial tensile capacity of the cable can be increased, the glass fiber ropes 4 are arranged between the long strip-shaped buffer cavities 301, one or more long strip-shaped buffer cavities are arranged between the adjacent glass fiber ropes 4, the specific arrangement mode is selected according to the number of the long strip-shaped buffer cavities, and the number of the long strip-shaped buffer cavities is 20-40, so that the flexible layer 3 integrally forms a compact elastic structure.

The insulating heart yearn includes heart yearn conductor 5 and the cladding is at the polyvinyl chloride insulating cover 6 in the heart yearn conductor 5 outside, and heart yearn conductor 5 is tombarthite aluminum alloy conductor or copper conductor, and wherein copper conductor adopts and accords with IEC 60228: category 5 no-tin annealed conductor TR round copper wire of 2004 standard.

The sheath 1 is a fire-resistant polyvinyl chloride insulating sheath or other sheath structure with considerable properties.

The center of the soft rubber extrusion layer 2 is provided with a reinforcing steel wire rope 7.

As shown in fig. 2, in the first structure, the buffer reinforcing cavities 302 extend toward both the inside and the outside of the cable, i.e., the buffer reinforcing cavities 302 and the elongated buffer cavities 301 form an H-shaped structure.

In the second structure, as shown in fig. 3, the outside of the buffer reinforcing cavity 302 is flush with the elongated buffer cavity 301, and the buffer reinforcing cavity 302 extends only toward the inside of the cable, i.e., the buffer reinforcing cavity 302 and the elongated buffer cavity 301 form a concave structure with the concave groove facing the center of the cable.

As shown in fig. 4, in the third structure, the inside of the buffer reinforcing cavity 302 is flush with the elongated buffer cavity 301, and the buffer reinforcing cavity 302 extends only toward the outside of the cable, that is, the buffer reinforcing cavity 302 and the elongated buffer cavity form a concave structure, and the groove of the concave structure is disposed toward the outside of the cable.

The side walls of the buffer reinforcing cavity 302 are of a convex arc structure, so that the solid part of the flexible layer 3 has better elastic deformation recovery capability.

The thickness of the elongated buffer cavity 301 is 1/6-1/2 of the thickness of the flexible layer 3, so that enough shaping capacity is reserved for the flexible layer 3 and permanent deformation is avoided.

According to the utility model, the structure that the strip-shaped buffer cavity and the buffer reinforcing cavity are combined is arranged on the flexible layer, the buffer reinforcing cavity can improve the buffer capacity of the flexible layer and even the whole cable to a certain extent, and further resist larger impact deformation, and the width of the strip-shaped buffer cavity is narrower than that of the buffer reinforcing cavity, so that a certain limiting effect can be achieved when the flexible layer is deformed greatly, permanent deformation caused by excessive deformation of the flexible layer is avoided, and the service life of the cable is prolonged.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a novel special transmission cable of vertical wind power generation tower, includes conductor and the sheath of cladding in the conductor outside, the conductor is formed by the transposition of stranded insulating heart yearn, be provided with the crowded covering of soft rubber between insulating heart yearn and the sheath, its characterized in that: a flexible layer is arranged between the soft rubber extrusion layer and the sheath;

2. The novel transmission cable special for the vertical wind power tower according to claim 1, characterized in that: the side wall of the buffer reinforcing cavity is of a convex arc structure.

3. The novel transmission cable special for the vertical wind power tower according to claim 1, characterized in that: the insulating core wire comprises a core wire conductor and a polyvinyl chloride insulating sleeve coated on the outer side of the core wire conductor.

4. The novel transmission cable special for the vertical wind power tower according to claim 3, characterized in that: the core wire conductor is a rare earth aluminum alloy conductor or a copper conductor.

5. The novel transmission cable special for the vertical wind power tower according to claim 1, characterized in that: the sheath is a polyvinyl chloride insulating sheath.

6. The novel transmission cable special for the vertical wind power tower according to claim 1, characterized in that: the thickness of the strip-shaped buffer cavity is 1/6-1/2 of the thickness of the flexible layer.

7. The novel transmission cable special for the vertical wind power tower according to claim 1, characterized in that: 20-40 long strip buffer cavities are arranged.

8. The novel transmission cable special for the vertical wind power tower according to claim 1, characterized in that: and a reinforced steel wire rope is arranged in the center of the soft rubber extrusion layer.