A flame retardant heat-insulating photovoltaic power generation cable

Abstract

The utility model relates to a flame-retardant heat-insulating photovoltaic power generation cable, comprising a plurality of cable cores and a wrapping tape layer, a waterproof layer, an armor layer, a flame-retardant layer and an outer sheath sequentially coated on the outer sides of the plurality of cable cores from the inside to the outside, the outer surface of the cable core is coated with a wear-resistant coating, and the outer wall of the outer sheath is provided with a wear-resistant structure. The main purpose of the utility model is to provide a flame-retardant heat-insulating photovoltaic power generation cable with good heat-insulating and flame-retardant effects, as well as high structural strength and compressive resistance; at the same time, it has a double anti-wear effect and a long service life.

Description

Technical Field

[0001] The utility model relates to a cable, in particular to a flame-retardant and heat-insulating cable for photovoltaic power generation. Background Art

[0002] With the increasing demand for energy, people have begun to vigorously develop new energy sources in order to alleviate and solve the dilemma of the gradual reduction of traditional resource storage. Among them, solar energy resources are widely welcomed, but solar energy collection needs to be done outdoors. Due to the complex outdoor environment, there are not only ultraviolet rays and high temperatures, but also pressure, gravity and friction on the cable surface. Therefore, it is very important to ensure the stability and mechanical strength of the cable for this type of photovoltaic cable. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a flame-retardant and heat-insulating photovoltaic power generation cable with good waterproof and flame-retardant effects, as well as high structural strength and compressive resistance; at the same time, it has a double anti-wear effect and a long service life.

[0004] In order to solve the above problems, the technical solutions adopted by the utility model are as follows:

[0005] A flame retardant heat-insulating photovoltaic power generation cable comprises a plurality of cable cores and a wrapping tape layer, a waterproof layer, an armor layer, a flame retardant layer and an outer sheath which are sequentially coated on the outer sides of the plurality of cable cores from the inside out, the outer surface of the cable core is coated with a wear-resistant coating, and the outer wall of the outer sheath is provided with a wear-resistant structure.

[0006] Furthermore, the wear-resistant structure includes a plurality of wear-resistant ridges 1 and 2 which are spaced apart along the circumference of the outer sheath, and the wear-resistant ridges 1 and 2 are staggeredly distributed.

[0007] Furthermore, the height of the second wear-resistant ridge is less than two-thirds of the height of the first wear-resistant ridge.

[0008] Furthermore, a support skeleton is provided on the inner side of the wrapping tape layer, and the support skeleton includes a support body and a plurality of fins evenly distributed circumferentially on the outer wall of the support body, and the fins extend radially along the wrapping tape layer. The number of the fins is the same as the cable core, and each of the fins is located between two adjacent cable cores.

[0009] Furthermore, each of the fins comprises two support sheets arranged at intervals, a connecting sheet is provided between the two support sheets, and at least two connecting sheets are provided at intervals along the radial direction of the wrapping tape layer.

[0010] Furthermore, a support block is fixedly provided on one end of the fin away from the support body, and the width of the support block is greater than the width of the fin.

[0011] Furthermore, a heat-insulating tape is wrapped around the outer side of the waterproof layer.

[0012] Furthermore, the wear-resistant coating is made of ceramic nanomaterial.

[0013] Furthermore, a filling layer is provided between the wrapping tape layer and the plurality of cable cores.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the flame-retardant and heat-insulating photovoltaic power generation cable in the utility model has good waterproof and flame-retardant effects, as well as high structural strength and compressive resistance; at the same time, by arranging a wear-resistant structure on the outer sheath, a double anti-wear effect is achieved, the structural stability is high, and the service life is long, and it is especially suitable for application environments such as outdoor installation and ground laying. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a flame-retardant and heat-insulating photovoltaic power generation cable of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a support frame in a flame-retardant and heat-insulating photovoltaic power generation cable of the utility model;

[0017] Among them, 1. outer sheath; 11. wear-resistant convex strip 1; 12. wear-resistant convex strip 2; 2. flame retardant layer; 3. armor layer; 4. waterproof layer; 5. shielding insulation layer; 6. wrapping tape layer; 7. filling layer; 8. cable core; 81. conductor; 82. insulating sheath; 9. supporting frame; 91. supporting body; 92. fin; 921. supporting plate; 922. connecting plate; 923. supporting block; 10. tensile core. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] It should be noted that, in the description of the technical solution of the present invention, some directional words used to clearly describe the technical features of the present invention, such as "front", "back", "up", "down", "top", "bottom", "inside", "outside", etc., are all in accordance with the orientation of the drawings of the present invention.

[0020] Example

[0021] like Figure 1As shown, a flame-retardant and heat-insulating photovoltaic power generation cable of this embodiment includes a plurality of cable cores 8 and a wrapping tape layer 6, a shielding insulation layer 5, a waterproof layer 4, an armor layer 3, a flame-retardant layer 2 and an outer sheath 1 sequentially wrapped on the outside of the plurality of cable cores 8 from the inside to the outside, and a filling layer 7 is also provided between the wrapping tape layer 6 and the plurality of cable cores 8. The cable core 8 includes a conductor 81 for conducting signals and an insulating sheath 82 wrapped on the outside of the conductor 81. Since friction will also occur between the cable core 8 and the filling layer 7 when the cable is bent or twisted, a wear-resistant coating is coated on the outer surface of the insulating sheath 82 in this embodiment. The wear-resistant coating is made of ceramic nanomaterials to improve the wear resistance of the cable core 8 and protect the surface of the cable core 8 from wear.

[0022] In order to improve the overall structural strength and compressive strength of the cable, a support frame 9 is provided inside the wrapping tape layer 6 in this embodiment. Figure 2 As shown, the support skeleton 9 includes a support body 91 and a plurality of fins 92 uniformly distributed on the outer wall of the support body 91 along the circumferential direction. The support body 91 and the plurality of fins 92 extend along the length direction of the cable. The support body 91 of this embodiment is a hollow cylindrical structure, and the hollow part is provided with a tensile core 10 made of alloy material to improve the tensile strength of the cable. One end of the fin 92 is fixedly connected to the support body 91, and the other end of the fin 92 extends radially along the wrapping tape layer 6 and abuts against the inner wall of the wrapping tape layer 6. The number of fins 92 is the same as that of the cable core 8, and each fin 92 is located between two adjacent cable cores 8. Specifically, in this embodiment, there are three cable cores 8, and three fins 92 are also provided accordingly. A fin 92 is provided between two adjacent cable cores 8. The fin 92 separates the cable cores 8 independently to avoid mutual extrusion between adjacent cable cores 8, and at the same time plays a certain supporting role and anti-pressure effect.

[0023] Specifically, in the present embodiment, each fin 92 includes two support sheets 921 arranged at intervals, and a connecting sheet 922 is connected between the two support sheets 921, and at least two connecting sheets 922 are arranged at intervals along the radial direction of the wrapping tape layer 6. With this structural design, there is a gap between the two support sheets 921, and there is a certain deformation space when squeezed to achieve the effect of pressure resistance and buffering. At the same time, the structural strength of the fin 92 is improved by the connecting sheet 922, thereby improving the pressure resistance. At the same time, a support block 923 is fixedly provided at one end of the fin 92 away from the support body 91, and the width of the support block 923 is greater than the width of the fin 92, and the support block 923 abuts against the inner wall of the wrapping tape layer 6. Preferably, in the present embodiment, the width of the fin 92 is one third of the width of the support block 923.

[0024] In this embodiment, a wear-resistant structure is provided on the outer wall of the outer sheath 1. The wear-resistant structure includes a plurality of wear-resistant convex strips 11 and 12 arranged at intervals along the circumference of the outer sheath 1, and the wear-resistant convex strips 11 and 12 are staggered. The wear-resistant convex strips 11 and 12 both extend along the length direction of the cable. Specifically, in this embodiment, the cross-sectional shape of the wear-resistant convex strip 11 is a trapezoid or a rectangle; the cross-sectional shape of the wear-resistant convex strip 2 12 is a semicircle. The height of the wear-resistant convex strip 2 12 is less than two-thirds of the height of the wear-resistant convex strip 11. In this embodiment, the height of the wear-resistant convex strip 2 12 is preferably one-half of the height of the wear-resistant convex strip 11. With this structure, when the surface of the outer sheath 1 rubs against other objects, the wear-resistant convex strip 11 first contacts and rubs against other objects, and when the wear-resistant convex strip 11 is worn to a certain extent, the wear-resistant convex strip 2 12 will contact and rub against other objects, further improving the anti-wear ability. It has a double anti-wear effect. The wear-resistant structure of this embodiment is formed integrally with the outer sheath 1 .

[0025] In this embodiment, the filling layer 7 is filled with glass fiber and has a good flame retardant effect. The wrapping tape layer 6 is made of waterproof mica tape. The shielding insulation layer 5 is made of polytetrafluoroethylene polymer material. The waterproof layer 4 is a polyethylene waterproof layer, and the outer side of the waterproof layer 4 is wrapped with a heat-insulating tape, which has heat-insulating and shielding effects. The inner side of the waterproof layer 4 is wrapped with a glass fiber tape, which further plays a role in isolating flames and preventing fire and flame retardancy. The armor layer 3 is made of galvanized steel strip, which can greatly improve the structural strength of the cable and protect the internal structure of the cable from damage. The flame retardant layer 2 is made of aluminum silicate fiber, which can improve the flame retardant effect of the cable. The outer sheath 1 is made of oil-resistant special composite polyvinyl chloride polymer material, which can effectively resist radial pressure from the outside, and at the same time has good chemical stability and can prevent the infiltration of water and other chemicals.

[0026] The utility model discloses a flame retardant and heat-insulating photovoltaic power generation cable, which has good waterproof and flame retardant effects, as well as high structural strength and pressure resistance. At the same time, by arranging a wear-resistant structure on the outer sheath 1, a double anti-wear effect is achieved, the structural stability is high, and the service life is long. It is especially suitable for application environments such as outdoor installation and ground laying.

[0027] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the protection scope of the claims of the utility model.

Claims

1. A flame retardant and heat-insulating photovoltaic power generation cable, characterized in that: The invention comprises a plurality of cable cores (8) and a wrapping tape layer (6), a waterproof layer (4), an armor layer (3), a flame retardant layer (2) and an outer sheath (1) which are sequentially coated on the outer sides of the plurality of cable cores (8) from the inside to the outside. The outer surface of the cable core (8) is coated with a wear-resistant coating. The outer wall of the outer sheath (1) is provided with a wear-resistant structure. The wear-resistant structure comprises a plurality of wear-resistant convex strips (11) and wear-resistant convex strips (12) which are arranged at intervals along the circumference of the outer sheath (1). The wear-resistant convex strips (11) and the wear-resistant convex strips (12) are arranged in an alternating manner. The height of the wear-resistant convex strips (12) is less than two-thirds of the height of the wear-resistant convex strips (11).

2. A flame retardant and heat-insulating photovoltaic power generation cable according to claim 1, characterized in that: A support frame (9) is provided on the inner side of the wrapping tape layer (6), and the support frame (9) comprises a support body (91) and a plurality of fins (92) uniformly distributed along the circumferential direction on the outer wall of the support body (91), and the fins (92) extend radially along the wrapping tape layer (6), the number of the fins (92) is the same as the number of the cable cores (8), and each of the fins (92) is located between two adjacent cable cores (8).

3. A flame retardant and heat-insulating photovoltaic power generation cable according to claim 2, characterized in that: Each of the fins (92) comprises two support sheets (921) arranged at intervals, a connecting sheet (922) is provided between the two support sheets (921), and at least two connecting sheets (922) are provided at intervals along the radial direction of the wrapping tape layer (6).

4. A flame-retardant and heat-insulating photovoltaic power generation cable according to claim 3, characterized in that: A support block (923) is fixedly provided on one end of the fin (92) away from the support body (91), and the width of the support block (923) is greater than the width of the fin (92).

5. The flame-retardant and heat-insulating photovoltaic power generation cable according to claim 1, characterized in that: The outer side of the waterproof layer (4) is wrapped with a heat-insulating tape.

6. The flame-retardant and heat-insulating photovoltaic power generation cable according to claim 1, characterized in that: The wear-resistant coating is made of ceramic nanomaterial.

7. The flame-retardant and heat-insulating photovoltaic power generation cable according to claim 1, characterized in that: A filling layer (7) is also provided between the wrapping tape layer (6) and the plurality of cable cores (8).

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