Wear-resistant photovoltaic cable

Abstract

A wear-resistant photovoltaic cable of the utility model comprises a cable main body and a mounting seat, the cable main body comprises a lead, an insulating layer, insulating ceramic chips and an outer protective layer, the outer side of the lead is sequentially coated with a mineral oxygen barrier layer, an insulating layer and a braid layer, the outer side of the braid layer is uniformly provided with a plurality of insulating ceramic chips, and the insulating ceramic chips are arranged on the mounting seat. The surface of each insulating ceramic chip is coated with a wear-resistant ceramic coating, all the insulating ceramic chips are coated with an outer protective layer, the mounting seat comprises a plurality of fixing rings and a mounting plate, the outer side of the outer protective layer is axially provided with a plurality of fixing rings, the bottoms of the fixing rings are detachably connected with the mounting plate, the mounting plate is provided with a plurality of positioning holes, and the positioning holes are communicated with the outer protective layer. According to the utility model, the wear resistance and the waterproof performance of the cable are effectively improved, the service life of the cable is prolonged, and the safety and the stability of cable installation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a wear-resistant photovoltaic cable. Background Art

[0002] Photovoltaic cable, also known as PV cable, is a cable used to connect photovoltaic modules and various photovoltaic power generation system equipment in solar photovoltaic systems. The basic structure of photovoltaic cable includes conductor, insulation layer and sheath. The installation methods of photovoltaic cable include direct burial, overhead, pipeline, etc. The overhead fixing method is to use a special cable bracket to hang the photovoltaic cable on the overhead cable channel or bracket. It is suitable for crossing roads, rivers and other scenes. It has the characteristics of easy installation, simple maintenance and convenient operation. There are three ways to install overhead cables: hanging, tray and clamping.

[0003] The clamping installation of overhead cables uses a metal bracket to clamp the cable on an existing bracket, or clamp the cable on a wall to fix the cable. The fixing structure of this installation method is generally not easy to disassemble, which is very inconvenient when repairing the line or replacing the cable. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a wear-resistant photovoltaic cable in view of the above shortcomings.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A wear-resistant photovoltaic cable comprises a cable body and a mounting seat, wherein the cable body comprises a conductor, an insulating layer, an insulating ceramic sheet and an outer sheath, wherein the outer side of the conductor is sequentially coated with a mineral oxygen-isolating layer, an insulating layer and a braided layer, wherein a plurality of insulating ceramic sheets are evenly distributed on the outer side of the braided layer, wherein the surface of the insulating ceramic sheets is coated with a wear-resistant ceramic coating, and all the insulating ceramic sheets are coated with the outer sheath; wherein the mounting seat comprises a fixing ring and a mounting plate, wherein a plurality of fixing rings are axially arranged on the outer side of the outer sheath, wherein a mounting plate is detachably connected to the bottom of the fixing ring, wherein a plurality of positioning holes are provided on the mounting plate, and wherein the mounting plate is fixedly connected to an external mounting frame through the positioning holes.

[0007] Furthermore, the braided layer is formed by interlacing aramid fiber ropes and steel wires, and the surface of the braided layer is sprayed with acrylic waterproof coating.

[0008] Furthermore, the insulating ceramic sheet is adhered to the outside of the braided layer.

[0009] Furthermore, the fixing ring can be detachably fixed on the outside of the cable, and the fixing ring includes two hinged semi-annular fixing parts, and the inner side of the semi-annular fixing parts is provided with a plurality of annular strip-shaped protrusions with triangular cross-sections arranged side by side, and the protrusions are semi-annular as a whole. The two semi-annular fixing parts are fixed by bolts, and the lower semi-annular fixing part is horizontally provided with a plurality of first threaded holes running through the front and rear surfaces; a U-shaped clamping plate is provided on the mounting plate, and an arc groove is provided on the upper surface of the U-shaped clamping plate for placing the cable body, and a plurality of second threaded holes corresponding to the first threaded holes are horizontally provided on the U-shaped clamping plate.

[0010] Furthermore, the outer protective layer is made of EPDM rubber.

[0011] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0012] The utility model effectively improves the wear resistance and waterproof performance of the cable and prolongs the service life of the cable by coating the surface of the insulating ceramic sheet with a wear-resistant ceramic coating and spraying acrylic waterproof coating on the surface of the braided layer; the cable can be conveniently fixed on the external mounting frame by setting multiple fixing rings and detachably connected mounting plates on the outside of the outer sheath. The movable design of the fixing ring along the axial direction of the cable allows the fixed position of the cable to be flexibly adjusted to meet different installation requirements; by setting a triangular protrusion on the inner side of the fixing ring, the triangular protrusion will squeeze the surface of the outer sheath to form a groove after the fixing ring is locked, and the triangular protrusion is located on the inner side of the groove, so that the fixed connection between the fixing ring and the outer sheath is more stable, which improves the safety and stability of the cable installation.

[0013] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the cable cross-section structure;

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the fixed ring;

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the mounting plate and the U-shaped clamp.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0019] 1. Conductor; 2. Mineral oxygen-isolating layer; 3. Insulating layer; 4. Braided layer; 5. Insulating ceramic sheet; 6. Wear-resistant ceramic coating; 7. Outer sheath; 8. Fixing ring; 801. Semi-circular fixing piece; 802. Protrusion; 803. First threaded hole; 9. Mounting plate; 901. Positioning hole; 10. U-shaped clamp; 1001. Second threaded hole. DETAILED DESCRIPTION

[0020] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0022] like Figure 1-4 As shown, a wear-resistant photovoltaic cable includes a cable body and a mounting seat, the cable body includes a conductor 1, an insulating layer 3, an insulating ceramic sheet 5 and an outer sheath 7, the outer side of the conductor 1 is sequentially coated with a mineral oxygen-isolating layer 2, an insulating layer 3 and a braided layer 4, a plurality of insulating ceramic sheets 5 are evenly distributed on the outer side of the braided layer 4, the surface of the insulating ceramic sheets 5 is coated with a wear-resistant ceramic coating 6, and all the insulating ceramic sheets 5 are coated with the outer sheath 7; the mounting seat includes a fixing ring 8 and a mounting plate 9, a plurality of fixing rings 8 are axially arranged on the outer side of the outer sheath 7, a mounting plate 9 is detachably connected to the bottom of the fixing ring 8, a plurality of positioning holes 901 are opened on the mounting plate 9, and the mounting plate 9 is fixedly connected to the external mounting frame through the positioning holes 901.

[0023] As an implementation manner, the braided layer 4 is formed by interlacing aramid fiber ropes and steel wires, and the surface of the braided layer 4 is sprayed with acrylic waterproof coating.

[0024] As an implementation manner, the insulating ceramic sheet 5 is adhered to the outside of the braided layer 4 .

[0025] As an embodiment, the fixing ring 8 can be detachably fixed on the outside of the cable, and the fixing ring 8 includes two hinged semi-annular fixing parts 801, and the inner side of the semi-annular fixing parts 801 is provided with a plurality of annular strip-shaped protrusions 802 with triangular cross-sections arranged side by side, and the protrusions 802 are semi-annular as a whole. The two semi-annular fixing parts 801 are fixed by bolts, and the lower semi-annular fixing part 801 is horizontally provided with a plurality of first threaded holes 803 running through the front and rear surfaces; a U-shaped clamping plate 10 is provided on the mounting plate 9, and an arc groove is provided on the upper surface of the U-shaped clamping plate 10 for placing the cable body, and a plurality of second threaded holes 1001 corresponding to the first threaded holes 803 are horizontally provided on the U-shaped clamping plate 10.

[0026] As an implementation mode, the outer protective layer 7 is made of EPDM rubber.

[0027] The working process of the utility model is as follows: when it is necessary to install the cable, firstly, the mounting plate 9 is fixedly connected to the external mounting frame through the positioning hole 901. The U-shaped clamping plate 10 on the mounting plate 9 is used to connect with the fixing ring 8. Since the fixing ring 8 can move along the axial direction of the cable, the position of the cable can be adjusted as needed. The fixing ring 8 is composed of two hinged semi-annular fixing members 801, and the triangular protrusion 802 on the inner side cooperates with the U-shaped clamping plate 10 to ensure the firm fixation of the cable. The two semi-annular fixing members 801 are fixed together by bolts passing through the first threaded hole 803 and the second threaded hole 1001. During the use of the cable, the wear-resistant ceramic coating 6 can effectively resist external wear and extend the service life of the cable. If the cable needs to be repaired or replaced, the fixing ring 8 and the mounting plate 9 can be easily disassembled, so that the cable can be easily removed from the mounting frame.

[0028] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A wear-resistant photovoltaic cable, characterized in that: The invention comprises a cable body and a mounting seat, wherein the cable body comprises a conductor (1), an insulating layer (3), an insulating ceramic sheet (5) and an outer sheath (7), wherein the outer side of the conductor (1) is sequentially coated with a mineral oxygen-isolating layer (2), an insulating layer (3) and a braided layer (4), wherein a plurality of insulating ceramic sheets (5) are evenly distributed on the outer side of the braided layer (4), wherein the surface of the insulating ceramic sheets (5) is coated with a wear-resistant ceramic coating (6), and all insulating ceramic sheets (5) are coated with the outer sheath (7); wherein the mounting seat comprises a fixing ring (8) and a mounting plate (9), wherein a plurality of fixing rings (8) are axially arranged on the outer side of the outer sheath (7), wherein the bottom of the fixing ring (8) is detachably connected to a mounting plate (9), wherein a plurality of positioning holes (901) are provided on the mounting plate (9), and wherein the mounting plate (9) is fixedly connected to an external mounting frame through the positioning holes (901).

2. A wear-resistant photovoltaic cable according to claim 1, characterized in that: The braided layer (4) is formed by interlacing and braiding aramid fiber ropes and steel wires, and the surface of the braided layer (4) is sprayed with acrylic waterproof paint.

3. A wear-resistant photovoltaic cable according to claim 1, characterized in that: The insulating ceramic sheet (5) is adhered to the outside of the braided layer (4).

4. A wear-resistant photovoltaic cable according to claim 1, characterized in that: The fixing ring (8) is detachably fixed on the outer side of the cable, and the fixing ring (8) comprises two hinged semi-annular fixing members (801), and a plurality of annular strip-shaped protrusions (802) with triangular cross-sections arranged side by side are arranged on the inner side of the semi-annular fixing members (801), and the protrusions (802) are semi-annular as a whole, and the two semi-annular fixing members (801) are fixed by bolts, and a plurality of first threaded holes (803) penetrating the front and rear surfaces are transversely opened on the lower semi-annular fixing member (801); a U-shaped clamping plate (10) is arranged on the mounting plate (9), and a circular arc groove for placing the cable body is opened on the upper surface of the U-shaped clamping plate (10), and a plurality of second threaded holes (1001) corresponding to the first threaded holes (803) are transversely opened on the U-shaped clamping plate (10).

5. The wear-resistant photovoltaic cable according to claim 1, characterized in that: The outer protective layer (7) is made of ethylene propylene rubber.

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