Flat aluminum sheath high-voltage power cable

Abstract

The utility model relates to the field of power cables, in particular to a flat aluminum sheath high-voltage power cable, which comprises a conductor (1), and the conductor (1) is sequentially wrapped with an insulating layer (2), a water-blocking buffer layer (3), a shielding layer (4), a water-blocking filling layer (5), a flat aluminum sheath (6) and an outer sheath (7) from inside to outside. The cross section of the copper wire is quadrilateral, compared with a traditional circular metal shielding layer, the quadrilateral design can maintain the same electrical performance, and has better water-blocking performance and smaller outer diameter of the cable, and the adjacent surfaces of the quadrilateral and the water-blocking filling strips are connected more tightly, so that the service life of the cable is prolonged, the service life of the cable is prolonged, and the service life of the cable is prolonged. The waterproof performance is better, the stress generated when the cable is bent can be effectively buffered, and the internal structure of the cable is protected from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of power cables, and in particular to a flat aluminum-sheathed high-voltage power cable. Background Technology

[0002] Traditional flat aluminum-sheathed cables often use a thicker aluminum sheath to meet the requirements of short-circuit current and other related line operation. However, an excessively thick aluminum sheath can affect the cable's bending performance, and in extreme cases, may cause the aluminum sheath to separate from the outer plastic sheath, resulting in severe plastic deformation of the aluminum sheath and the formation of "wrinkles" on the surface, thus affecting the cable's operational safety.

[0003] Therefore, those skilled in the art are dedicated to developing a flat aluminum-sheathed high-voltage power cable. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by this utility model is to provide a flat aluminum-sheathed high-voltage power cable.

[0005] To achieve the above objectives, this utility model provides a flat aluminum sheathed high-voltage power cable, including a conductor, wherein the conductor is wrapped from the inside out with an insulation layer, a water-blocking buffer layer, a shielding layer, a water-blocking filling layer, a flat aluminum sheath, and an outer sheath.

[0006] The shielding layer is made of copper wire and water-blocking filler strips wound alternately.

[0007] Preferably, the copper wire has a quadrilateral cross-section.

[0008] Preferably, the conductor is a copper conductor.

[0009] Preferably, the insulation layer is made of cross-linked polyethylene cable insulation material.

[0010] The beneficial effects of this utility model are: the copper wire cross-section of this utility model is quadrilateral. Compared with the traditional circular metal shielding layer, the quadrilateral design can maintain the same electrical performance while having better water-blocking performance and a smaller cable outer diameter. Moreover, the quadrilateral is more tightly connected to the adjacent surface of the water-blocking filler strip, resulting in better water-blocking performance. It can also effectively buffer the stress generated when the cable is bent, protecting the internal structure of the cable from damage. Attached Figure Description

[0011] Figure 1 This is a cross-sectional structural diagram of a specific embodiment of the present invention.

[0012] 1. Conductor; 2. Insulation layer; 3. Water-blocking buffer layer; 4. Shielding layer; 41. Copper wire; 42. Water-blocking filler strip; 5. Water-blocking filler layer; 6. Flat aluminum sheath; 7. Outer sheath. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific manner. Therefore, they should not be construed as limitations on the present invention. Terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0014] like Figure 1 As shown, a flat aluminum sheathed high-voltage power cable includes a conductor 1. In this embodiment, the conductor 1 is made of copper. The conductor 1 is wrapped from the inside out with an insulation layer 2, a water-blocking buffer layer 3, a shielding layer 4, a water-blocking filling layer 5, a flat aluminum sheath 6, and an outer sheath 7.

[0015] In this embodiment, the shielding layer 4 is formed by alternating winding of copper wire 41 and water-blocking filler strip 42. The copper wire 41 has a quadrilateral cross-section. Compared with the traditional circular metal shielding layer 4, the quadrilateral design can maintain the same electrical performance while having better water-blocking performance and a smaller cable outer diameter. In addition, the quadrilateral and the adjacent surfaces of the water-blocking filler strip 42 are more tightly connected, resulting in better water-blocking performance. This ensures that when the cable is corroded by water, water cannot penetrate laterally from the gap between the flat copper wire 41 and the water-blocking filler strip 42. It can also effectively buffer the stress generated when the cable is bent, protecting the internal structure of the cable from damage.

[0016] In use, this utility model uses quadrilateral flat copper wire 41 and water-blocking filler strip 42 to make shielding layer 4. Compared with the traditional round copper wire shielding layer, the cable made with this structure has better water-blocking performance and smaller outer diameter. Moreover, the overall outer diameter of the prepared cable is the same as that of conventional flat aluminum sheathed cable, and the bending performance is better, basically the same as the bending radius of conventional corrugated aluminum sheathed cable with the same cross section.

[0017] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A flat aluminum-sheathed high-voltage power cable, characterized in that: It includes a conductor (1), which is wrapped from the inside out with an insulating layer (2), a water-blocking buffer layer (3), a shielding layer (4), a water-blocking filling layer (5), a flat aluminum sheath (6), and an outer sheath (7). The shielding layer (4) is formed by alternating winding of copper wire (41) and water-blocking filler strip (42); The copper wire (41) has a quadrilateral cross section.

2. The flat aluminum-sheathed high-voltage power cable as described in claim 1, characterized in that: The conductor (1) is a copper conductor.

3. The flat aluminum sheathed high-voltage power cable as described in claim 1, characterized in that: The insulation layer (2) is made of cross-linked polyethylene cable insulation material.

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