AC / DC transmission power cable structure

Abstract

The utility model discloses an AC / DC transmission power cable structure, which comprises an inner waterproof layer, a support frame structure is wound around the inner waterproof layer, an outer waterproof layer is fixedly connected around the support frame structure, a DC transmission copper wire is fixedly connected to the middle of the inner part of the inner waterproof layer, and the DC transmission copper wire is fixedly connected to the outer waterproof layer. A copper wire protection layer B is arranged on the surface of each direct current transmission copper wire, four alternating current transmission copper wires are arranged on the periphery of the supporting frame structure in an array mode, a copper wire protection layer A is arranged on the surface of each alternating current transmission copper wire, and the interior of the inner waterproof layer is filled with gypsum powder. The supporting frame structure is of the spiral structure, the outer waterproof layer is fixedly connected to the outer surface of the supporting frame structure, the whole supporting frame structure supports the outer waterproof layer on the surface, and therefore the outer waterproof layer and the inner waterproof layer are fixedly connected; the hardness of the whole surface of the outer waterproof layer and the inner waterproof layer is improved through spiral winding.

Description

Technical Field

[0001] The utility model relates to the technical field of power cables, in particular to an AC / DC transmission power cable structure. Background Art

[0002] Power cables are used to transmit and distribute electrical energy. They are commonly used in urban underground power grids, power station outgoing lines, internal power supplies for industrial and mining enterprises, and underwater transmission lines across rivers and seas. The proportion of cables in power lines is gradually increasing. Power cables are used to transmit and distribute high-power electrical energy in the backbone lines of power systems.

[0003] The power cable is also provided with an armor layer inside, and this armor layer is generally composed of a support frame structure. However, the existing support frame structure is simple, resulting in weak support for the outer waterproof layer and the inner waterproof layer. As a result, the outer waterproof layer and the inner waterproof layer are not hard enough, and the power cable may be deformed under the action of external force. Therefore, it does not meet the existing needs. In this regard, we propose an AC / DC transmission power cable structure. Utility Model Content

[0004] The purpose of the present utility model is to provide an AC / DC transmission power cable structure to solve the problem that the support frame structure inside the power cable proposed in the above background technology is simple, resulting in the support frame structure not having strong support for the outer waterproof layer and the inner waterproof layer, and thus the outer waterproof layer and the inner waterproof layer are not hard enough, and the power cable may be deformed under the action of external force.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an AC / DC power transmission cable structure, comprising an inner waterproof layer, a support frame structure wrapped around the inner waterproof layer, an outer waterproof layer fixedly connected to the support frame structure on all sides, a DC power transmission copper wire fixedly connected to the middle of the inner waterproof layer, a copper wire protective layer B provided on the surface of the DC power transmission copper wire, four AC power transmission copper wires arranged in an array around the support frame structure, a copper wire protective layer A provided on the surface of the AC power transmission copper wire, and gypsum powder filled inside the inner waterproof layer.

[0006] Preferably, the support frame structure is a spiral structure, and an outer waterproof layer is fixedly connected to the outer surface of the support frame structure.

[0007] Preferably, the support frame structure includes a support plate, and a plurality of rows of support bars are wound around the upper end of the support plate.

[0008] Preferably, the cross-section of the support bar is set to a rectangular structure.

[0009] Preferably, the support frame structure further comprises a hollow support bar, wherein a plurality of inner cavities are provided inside the hollow support bar, and the cross-section of the inner cavities is a triangular structure.

[0010] Preferably, an inner support frame is provided inside each of the inverted triangle-shaped inner cavity grooves, and the cross-section of the inner support frame is a cross-shaped structure.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The utility model adopts a spiral structure of the support frame structure, and the outer surface of the support frame structure is fixedly connected to the outer waterproof layer. The overall support frame structure supports the outer waterproof layer on the surface, thereby fixing the outer waterproof layer and the inner waterproof layer. This spiral winding improves the overall surface hardness of the outer waterproof layer and the inner waterproof layer;

[0013] Multiple rows of support bars are wrapped around the upper end of the support plate, and the cross-section of the support bars is set to a rectangular structure, wherein the support bars are supported and fixed on the inner surface of the outer waterproof layer and the outer surface of the inner waterproof layer. At the same time, the setting of the support plate allows multiple rows of support bars to be wrapped around the surface of the inner waterproof layer. The winding setting of the support bars further improves the overall hardness of the outer waterproof layer and the inner waterproof layer, so that the overall power cable will not be deformed after being squeezed by the outside world.

[0014] 2. The utility model provides a plurality of inner cavities within the hollow supporting bar. The cross-section of the inner cavities presents a triangular structure. This triangular structure enhances the supporting function of the hollow supporting bar as a whole, thereby improving the supporting performance of the hollow supporting bar on the external waterproof layer. The arrangement of the triangular structure of the inner cavities enhances the stability of the overall supporting frame structure, thereby increasing the overall hardness of the outer and inner waterproof layers.

[0015] An internal support frame is provided inside each of the inverted triangle-shaped inner cavity grooves, wherein the cross-sectional surface of the internal support frame is a cross-shaped structure. This arrangement further improves the stability of the overall inner cavity groove. The internal support frame inside the inner cavity groove further improves the overall hardness of the outer waterproof layer and the inner waterproof layer, and further improves the performance of the overall power cable that will not be deformed after being squeezed by the outside world. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 It is a front view cutaway view of the entire utility model;

[0018] Figure 3 For this utility model Figure 1 A magnified view of the three-dimensional structure at point A in the middle;

[0019] Figure 4 This is an enlarged view of the three-dimensional structure of the support frame structure of another embodiment of the present invention.

[0020] In the figure: 1. Outer waterproof layer; 2. Inner waterproof layer; 3. AC power transmission copper wire; 4. Support frame structure; 401. Support plate; 402. Support bar; 403. Hollow support bar; 404. Inner cavity groove; 405. Inner support frame; 5. DC power transmission copper wire; 6. Copper wire protective layer A; 7. Copper wire protective layer B; 8. Gypsum powder. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] See also Figures 1 to 3 The present invention provides an embodiment of an AC / DC power transmission cable structure, comprising an inner waterproof layer 2, a support frame structure 4 wrapped around the inner waterproof layer 2, an outer waterproof layer 1 fixedly connected to the support frame structure 4, and a DC power transmission copper wire 5 fixedly connected to the middle of the inner waterproof layer 2, wherein the entire DC power transmission copper wire 5 is used solely for transporting DC power.

[0023] A copper wire protective layer B7 is provided on the surface of the DC power transmission copper wire 5, and four AC power transmission copper wires 3 are arranged in an array around the support frame structure 4. The surface of the AC power transmission copper wire 3 is provided with a copper wire protective layer A6. The copper wire protective layer B7 wrapped around the DC power transmission copper wire 5 provides insulation and protection for the DC power transmission copper wire 5 itself. The four AC power transmission copper wires 3 are used to transport AC power, and the copper wire protective layer A6 wrapped around the AC power transmission copper wire 3 provides insulation and protection for the AC power transmission copper wire 3 itself.

[0024] The interior of the inner waterproof layer 2 is filled with gypsum powder 8. When the four AC transmission copper wires 3 are transmitting AC power, the power flowing around the AC transmission copper wires 3 will generate inductance. The interior of the inner waterproof layer 2 is filled with gypsum powder 8, which blocks the magnetic flux lines generated by the power flow, thereby avoiding the large magnetic flux lines generated by the power flow of the AC transmission copper wires 3.

[0025] The support frame structure 4 is a spiral structure, and the outer surface of the support frame structure 4 is fixedly connected to the outer waterproof layer 1. The overall support frame structure 4 supports the outer waterproof layer 1 on the surface, thereby fixedly connecting the outer waterproof layer 1 and the inner waterproof layer 2. This spiral winding improves the overall surface hardness of the outer waterproof layer 1 and the inner waterproof layer 2. The support frame structure 4 includes a support plate 401, and multiple rows of support bars 402 are wound around the upper end of the support plate 401. The cross-section of the support bar 402 is set to a rectangular structure, wherein the support bar 402 is supported and fixed on the inner surface of the outer waterproof layer 1 and the outer surface of the inner waterproof layer 2. At the same time, the setting of the support plate 401 allows multiple rows of support bars 402 to be wound around the surface of the inner waterproof layer 2. The winding setting of the support bar 402 further improves the overall hardness of the outer waterproof layer 1 and the inner waterproof layer 2, so that the overall power cable will not be deformed after being squeezed by the outside.

[0026] See also Figure 4 In another embodiment provided by the present invention, the support frame structure 4 further includes a hollow support bar 403. A plurality of inner cavity grooves 404 are provided inside the hollow support bar 403. In this embodiment, the cross-section of the inner cavity grooves 404 is a triangular structure. This triangular structure improves the supporting effect of the overall hollow support bar 403, thereby improving the supporting performance of the hollow support bar 403 on the external waterproof layer 1. The arrangement of the triangular structure of the inner cavity grooves 404 improves the stability of the overall support frame structure 4, thereby improving the overall hardness of the outer waterproof layer 1 and the inner waterproof layer 2.

[0027] Each inverted triangle-shaped inner cavity groove 404 is provided with an inner support frame 405, wherein the cross-sectional surface of the inner support frame 405 is a cross-shaped structure, and the two side ends of the inner support frame 405 support the two side edges inside the inner cavity groove 404, and the upper and lower ends of the inner support frame 405 support the upper and lower ends inside the inner cavity groove 404. This arrangement further improves the stability of the overall inner cavity groove 404, and the internal support frame 405 inside the inner cavity groove 404 further improves the overall hardness of the outer waterproof layer 1 and the inner waterproof layer 2, and further improves the performance of the overall power cable that will not be deformed after being squeezed by the outside world.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An AC / DC power transmission cable structure, comprising an inner waterproof layer (2), characterized in that: The inner waterproof layer (2) is surrounded by a support frame structure (4), the outer waterproof layer (1) is fixedly connected to the support frame structure (4), a DC power transmission copper wire (5) is fixedly connected to the middle of the inner waterproof layer (2), the surface of the DC power transmission copper wire (5) is provided with a copper wire protective layer B (7), four AC power transmission copper wires (3) are arranged in an array around the support frame structure (4), the surface of the AC power transmission copper wire (3) is provided with a copper wire protective layer A (6), and the interior of the inner waterproof layer (2) is filled with gypsum powder (8).

2. The AC / DC power transmission cable structure according to claim 1, characterized in that: The support frame structure (4) is a spiral structure, and the outer surface of the support frame structure (4) is fixedly connected to an outer waterproof layer (1).

3. The AC / DC power transmission cable structure according to claim 2, characterized in that: The support frame structure (4) comprises a support plate (401), and a plurality of rows of support bars (402) are wound around the upper end of the support plate (401).

4. The AC / DC power transmission cable structure according to claim 3, characterized in that: The cross-section of the support bar (402) is configured as a rectangular structure.

5. The AC / DC power transmission cable structure according to claim 2, characterized in that: The support frame structure (4) further comprises a hollow support bar (403), wherein a plurality of inner cavity grooves (404) are provided inside the hollow support bar (403), and the cross-section of the inner cavity grooves (404) is a triangular structure.

6. The AC / DC power transmission cable structure according to claim 5, characterized in that: An inner support frame (405) is provided inside each of the inverted triangle-shaped inner cavity grooves (404), and the cross-section of the inner support frame (405) is a cross-shaped structure.

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