Ultraviolet-resistant high-temperature-resistant photovoltaic outdoor cable

Abstract

The utility model discloses an uvioresistant high-temperature-resistant photovoltaic outdoor cable, which relates to the technical field of photovoltaic cables, and comprises an outer sheath layer, a heat insulation layer is arranged in the outer sheath layer, an armor layer is arranged in the heat insulation layer, the armor layer comprises a first armor sleeve and a second armor sleeve, and the first armor sleeve and the second armor sleeve are arranged in the outer sheath layer. The second armoring sleeve is located in the first armoring sleeve, a plurality of outer hollow holes distributed at intervals are formed in the outer wall of the first armoring sleeve, a plurality of inner hollow holes distributed at intervals are formed in the outer wall of the second armoring sleeve, and the inner hollow holes and the outer hollow holes are distributed in a staggered mode. The problems that when an existing photovoltaic cable is used, the cable is reinforced through reinforcing ribs, but due to the fact that the distribution positions of the reinforcing ribs are uneven, the strength of the cable is easily reduced, and the service life of the cable in the outdoor environment is affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic cable technology, specifically to a photovoltaic outdoor cable that is resistant to ultraviolet radiation and high temperatures. Background Technology

[0002] Photovoltaic cables are special cables designed for use in solar photovoltaic power generation systems. They are designed to withstand harsh outdoor environments such as high temperatures, ultraviolet radiation, and acid and alkali corrosion. They are mainly used to connect solar panels, inverters, and other photovoltaic system components to transmit DC power.

[0003] For example, announcement number CN220381827U, entitled "A Photovoltaic Cable", includes a cable core, the outside of which is wrapped with a fireproof layer, a protective layer is provided outside the fireproof layer, a waterproof layer is provided outside the protective layer, four ceramic strip silicone layers are fixed at equal intervals outside the waterproof layer, a shielding layer is provided outside the ceramic strip silicone layer, a protective sleeve is provided outside the shielding layer, a second reinforcing rib is provided inside the protective sleeve, an anti-ultraviolet coating layer is applied to the outside of the protective sleeve, and acrylate water-absorbing beads are provided between the waterproof layer and the protective sleeve.

[0004] The existing photovoltaic cables are reinforced with reinforcing ribs during use. However, due to the uneven distribution of the reinforcing ribs, the cable's strength is easily reduced, affecting its service life in outdoor environments. Therefore, this does not meet the current requirements. To address this, a UV-resistant and high-temperature resistant outdoor photovoltaic cable is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a UV-resistant and high-temperature resistant photovoltaic outdoor cable to solve the problem mentioned in the background art that existing photovoltaic cables are reinforced with reinforcing ribs, but the uneven distribution of the reinforcing ribs can easily lead to a decrease in the cable's own strength and affect the cable's service life in outdoor environments.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a UV-resistant and high-temperature resistant photovoltaic outdoor cable, comprising: an outer sheath layer, wherein a heat insulation layer is disposed inside the outer sheath layer, and an armor layer is disposed inside the heat insulation layer, wherein the armor layer comprises a first armor sleeve and a second armor sleeve, the second armor sleeve being located inside the first armor sleeve, wherein a plurality of spaced-apart external perforations are disposed on the outer wall of the first armor sleeve, and a plurality of spaced-apart internal perforations are disposed on the outer wall of the second armor sleeve, wherein the internal perforations and external perforations are alternately distributed.

[0007] Preferably, the outer sheath layer is made of polyvinyl chloride.

[0008] Preferably, the insulation layer is made of cross-linked polyethylene.

[0009] Preferably, the armor layer has an inner sheath layer inside, and the inner sheath layer is made of polytetrafluoroethylene.

[0010] Preferably, the inner sheath layer has a copper strip metal shielding layer inside, and the copper strip metal shielding layer has an isolation sleeve inside, the isolation sleeve being made of silicone rubber.

[0011] Preferably, the interior of the isolation sleeve is provided with a water-resistant rubber filling layer, and the interior of the water-resistant rubber filling layer is provided with multiple conductors.

[0012] Preferably, a semiconducting conductor shielding layer is provided on the outer wall of the conductor, and a cross-linked polyethylene insulation layer is provided on the outside of the semiconducting conductor shielding layer.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, the armor layer is composed of a first armor sleeve and a second armor sleeve. The first armor sleeve and the second armor sleeve have outer hollow holes and inner hollow holes respectively. The above structure can effectively improve the strength of the cable itself through the double-layer armor sleeve, and the armor sleeve can more evenly improve the protection of the cable. The design of several hollow holes can reduce the weight of the armor sleeve. The staggered arrangement of the outer hollow holes and the inner hollow holes can prevent the inner hollow holes of the second armor sleeve from overlapping with the outer hollow holes of the first armor sleeve. This solves the problem that when existing photovoltaic cables are used, the cables are reinforced by reinforcing ribs, but the uneven distribution of the reinforcing ribs can easily lead to a decrease in the strength of the cable itself, affecting the service life of the cable in the outdoor environment.

[0015] (2) In this utility model, the outer sheath is made of polyvinyl chloride, which has good UV resistance. When applied to the outside, it can improve the service life of outdoor cables in long-term outdoor environments. In addition, the heat insulation layer is made of cross-linked polyethylene, which has heat insulation and high temperature resistance, which can reduce the impact of sunlight on the cable in outdoor environments and improve the service life of the cable itself.

[0016] (3) In this utility model, the isolation sleeve is made of silicone rubber, which can play an insulating role and has good high temperature resistance, effectively improving the high temperature resistance of the cable. The water-blocking rubber filling layer is used to improve the water-blocking effect inside the cable, making the cable more suitable for outdoor environments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall internal structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the armor layer structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the first armor sleeve and the second armor sleeve of this utility model;

[0021] In the diagram: 1. Outer sheath layer; 2. Heat insulation layer; 3. Armor layer; 301. First armor sleeve; 302. Outer perforation; 303. Second armor sleeve; 304. Inner perforation; 4. Inner sheath layer; 5. Copper strip metal shielding layer; 6. Isolation sleeve; 7. Water-blocking rubber filling layer; 8. Conductor; 9. Semi-conductive conductor shielding layer; 10. Cross-linked polyethylene insulation layer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4 This utility model provides an embodiment of a UV-resistant and high-temperature resistant photovoltaic outdoor cable, comprising: an outer sheath layer 1, the outer sheath layer 1 being made of polyvinyl chloride (PVC), an insulation layer 2 being made of cross-linked polyethylene (XLPE), and an armor layer 3 being provided inside the insulation layer 2. The outer sheath layer 1, being made of PVC, has good UV resistance, which, when applied externally, can improve the service life of the outdoor cable in long-term outdoor environments. In addition, the insulation layer 2, made of XLPE, has heat insulation and high-temperature resistance, which can reduce the impact of sunlight on the cable in outdoor environments and improve the cable's own service life.

[0024] The armor layer 3 includes a first armor sleeve 301 and a second armor sleeve 303. The second armor sleeve 303 is located inside the first armor sleeve 301. The outer wall of the first armor sleeve 301 is provided with a plurality of spaced-apart external perforations 302, and the outer wall of the second armor sleeve 303 is provided with a plurality of spaced-apart internal perforations 304. The internal perforations 304 and the external perforations 302 are alternately distributed. The armor layer 3 is composed of the first armor sleeve 301 and the second armor sleeve 303. The two armor sleeves 303 have outer hollow holes 302 and inner hollow holes 304 respectively. The above structure, through the double-layer armor sleeves, can effectively improve the strength of the cable itself, and the armor sleeve can more evenly improve the protection of the cable. The design of several hollow holes can reduce the weight of the armor sleeve. The staggered arrangement of the outer hollow holes 302 and inner hollow holes 304 can prevent the inner hollow holes 304 of the second armor sleeve 303 from overlapping with the outer hollow holes 302 of the first armor sleeve 301.

[0025] Please see Figure 2 The inner sheath layer 4 is made of polytetrafluoroethylene (PTFE) and contains a copper strip metal shielding layer 5. Inside the copper strip metal shielding layer 5 is an isolation sleeve 6 made of silicone rubber. The copper strip metal shielding layer 5 is used to isolate external electromagnetic interference and ensure the quality of signal transmission. The silicone rubber isolation sleeve 6 provides insulation and has good high-temperature resistance, effectively improving the high-temperature resistance of the cable.

[0026] Please see Figure 2 The isolation sleeve 6 has a water-blocking rubber filling layer 7 inside, and multiple conductors 8 inside the water-blocking rubber filling layer 7. A semi-conductive conductor shielding layer 9 is provided on the outer wall of the conductors 8, and a cross-linked polyethylene insulation layer 10 is provided on the outside of the semi-conductive conductor shielding layer 9. The water-blocking rubber filling layer 7 is used to improve the water-blocking effect inside the cable, making the cable more suitable for outdoor environments. The semi-conductive conductor shielding layer 9 and the cross-linked polyethylene insulation layer 10 are used to provide insulation and shielding for the conductors 8.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A UV-resistant and high-temperature resistant photovoltaic outdoor cable, comprising an outer sheath (1), characterized in that: The outer sheath layer (1) is provided with a heat insulation layer (2) inside, and the heat insulation layer (2) is provided with an armor layer (3) inside. The armor layer (3) includes a first armor sleeve (301) and a second armor sleeve (303). The second armor sleeve (303) is located inside the first armor sleeve (301). The outer wall of the first armor sleeve (301) is provided with a plurality of spaced outer perforated holes (302). The outer wall of the second armor sleeve (303) is provided with a plurality of spaced inner perforated holes (304). The inner perforated holes (304) and the outer perforated holes (302) are staggered.

2. The UV-resistant and high-temperature resistant photovoltaic outdoor cable according to claim 1, characterized in that: The outer sheath layer (1) is made of polyvinyl chloride.

3. The UV-resistant and high-temperature resistant photovoltaic outdoor cable according to claim 1, characterized in that: The insulation layer (2) is made of cross-linked polyethylene.

4. The UV-resistant and high-temperature resistant photovoltaic outdoor cable according to claim 1, characterized in that: The armor layer (3) has an inner sheath layer (4) inside, and the material of the inner sheath layer (4) is polytetrafluoroethylene.

5. The UV-resistant and high-temperature resistant photovoltaic outdoor cable according to claim 4, characterized in that: The inner sheath layer (4) is provided with a copper strip metal shielding layer (5), and the copper strip metal shielding layer (5) is provided with an isolation sleeve (6), the isolation sleeve (6) being made of silicone rubber.

6. The UV-resistant and high-temperature resistant photovoltaic outdoor cable according to claim 5, characterized in that: The isolation sleeve (6) is provided with a water-resistant rubber filling layer (7), and the water-resistant rubber filling layer (7) is provided with multiple conductors (8).

7. The UV-resistant and high-temperature resistant photovoltaic outdoor cable according to claim 6, characterized in that: A semiconducting conductor shielding layer (9) is provided on the outer wall of the conductor (8), and a cross-linked polyethylene insulation layer (10) is provided on the outside of the semiconducting conductor shielding layer (9).

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