Weather-proof photovoltaic cable

Abstract

The utility model discloses a weather-proof photovoltaic cable, and relates to the technical field of cables. Comprising a cable core, the outer side of the cable core is wrapped with an aluminum-plastic composite belt, a glass fiber filling rope and a reinforcing steel wire are arranged between the cable core and the aluminum-plastic composite belt, and the outer side of the aluminum-plastic composite belt is wrapped with a water-blocking wrapping belt. According to the weather-resistant photovoltaic cable, two layers of filling structures are arranged, the glass fiber filling ropes on the inner layer are good in insulativity, high in heat resistance and good in corrosion resistance, the hardness and strength of the cable can be enhanced through cooperation of the glass fiber filling ropes and the reinforcing steel wires, the cable is more durable, the polyester filling belts on the outer layer have high mechanical strength, excellent insulating performance, high temperature resistance and low temperature resistance, and the service life of the cable is prolonged. By matching the stainless steel foil, the cable is not easy to age and lose efficacy due to external factors, and meanwhile, the crosslinked polyethylene insulating layer and the polyvinyl chloride sheath of the cable have good weather resistance and can be used in an outdoor environment for a long time.

Description

Technical Field

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

[0002] Photovoltaic cable is a cable specially used in solar power generation systems. It is one of the important electrical components that connect solar panels, inverters, power grids and other equipment. Photovoltaic cable is generally composed of conductors made of copper or aluminum, insulation materials, sheath materials, etc. According to different requirements, photovoltaic cables can be divided into DC photovoltaic cables and AC photovoltaic cables. DC photovoltaic cables are mainly used for the connection between solar panels and inverters, while AC photovoltaic cables are mainly used for the connection between inverters and power grids.

[0003] When sunlight shines on solar panels, the panels convert solar energy into direct current electricity. This direct current electricity needs to be processed by a series of electrical equipment before it can be connected to the power grid. Photovoltaic cables are cables used to connect these electrical devices.

[0004] Photovoltaic cables serve in outdoor environments and are subjected to complex and changeable climates such as light, heat, cold, wind and rain for a long time, which can easily cause damage to the main body. Therefore, we propose a weather-resistant photovoltaic cable to enhance the protection performance of the cable and extend the service life of the cable. Utility Model Content

[0005] The utility model provides a weather-resistant photovoltaic cable to solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a weather-resistant photovoltaic cable, comprising a cable core, the outer side of the cable core is wrapped with an aluminum-plastic composite tape, a glass fiber filling rope and a reinforcing steel wire are respectively arranged between the cable core and the aluminum-plastic composite tape, the outer side of the aluminum-plastic composite tape is wrapped with a water-blocking tape, the outer side of the water-blocking tape is wrapped with a cross-linked polyethylene insulation layer, the outer side of the cross-linked polyethylene insulation layer is wrapped with a polyester filling tape, the outer side of the polyester filling tape is wrapped with a stainless steel foil, and the outer side of the stainless steel foil is wrapped with a polyvinyl chloride sheath.

[0007] Furthermore, the cable core includes a tinned copper conductor and a PE insulation layer, and the PE insulation layer is wrapped around the tinned copper conductor.

[0008] Furthermore, the cable core is provided with three strands, and the single strands of the tinned copper conductor are tightly twisted together.

[0009] Furthermore, the reinforcing steel wires are located between the cable cores, and the reinforcing steel wires are wrapped in glass fiber filling ropes.

[0010] Furthermore, the outer wall of the cross-linked polyethylene insulation layer is provided with convex strips, and the convex strips are evenly distributed on the cross-linked polyethylene insulation layer.

[0011] Furthermore, the stainless steel foil is wrapped on the convex strip, and the polyester filling tape is filled in the gap between the stainless steel foil and the convex strip.

[0012] Compared with the prior art, the utility model provides a weather-resistant photovoltaic cable having the following features:

[0013] Beneficial effects:

[0014] This weather-resistant photovoltaic cable has a two-layer filling structure. The inner layer of glass fiber filling rope has good insulation, strong heat resistance, and good corrosion resistance. Combined with reinforced steel wire, it can enhance the hardness and strength of the cable, making the cable more durable. The outer layer of polyester filling tape has high mechanical strength, excellent insulation performance, and is resistant to high and low temperatures. Combined with the use of stainless steel foil, the cable is not easily aged and failed due to external factors. At the same time, the cross-linked polyethylene insulation layer and polyvinyl chloride sheath of the cable have good weather resistance and can be used for a long time in outdoor environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a front view of the utility model;

[0017] Figure 3 It is a cross-sectional schematic diagram of the utility model.

[0018] In the figure: 1, cable core; 101, tinned copper conductor; 102, PE insulation layer; 2, aluminum-plastic composite tape; 3, glass fiber filling rope; 4, reinforcing steel wire; 5, water-blocking tape; 6, cross-linked polyethylene insulation layer; 7, polyester filling tape; 8, stainless steel foil; 9, polyvinyl chloride sheath; 10, convex strip. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 3The utility model discloses a weather-resistant photovoltaic cable, comprising a cable core 1, an aluminum-plastic composite tape 2 is wrapped around the outside of the cable core 1, a glass fiber filling rope 3 and a reinforcing steel wire 4 are respectively arranged between the cable core 1 and the aluminum-plastic composite tape 2, a water-blocking tape 5 is wrapped around the outside of the aluminum-plastic composite tape 2, a cross-linked polyethylene insulating layer 6 is wrapped around the outside of the water-blocking tape 5, a polyester filling tape 7 is wrapped around the outside of the cross-linked polyethylene insulating layer 6, a stainless steel foil 8 is wrapped around the outside of the polyester filling tape 7, and a polyvinyl chloride sheath 9 is wrapped around the outside of the stainless steel foil 8. The weather-resistant photovoltaic cable The cable is provided with a two-layer filling structure. The inner glass fiber filling rope 3 has good insulation, strong heat resistance and good corrosion resistance. Together with the reinforcing steel wire 4, the hardness and strength of the cable can be enhanced, making the cable more durable and long-lasting. The outer polyester filling belt 7 has high mechanical strength, excellent insulation performance, high temperature resistance and low temperature resistance. Together with the use of stainless steel foil 8, the cable is not easily aged and failed due to external factors. At the same time, the cross-linked polyethylene insulation layer 6 and the polyvinyl chloride sheath 9 of the cable have good weather resistance and can be used for a long time in outdoor environment.

[0021] Specifically, the cable core 1 includes a tinned copper conductor 101 and a PE insulation layer 102 , and the PE insulation layer 102 is wrapped around the tinned copper conductor 101 .

[0022] In this embodiment, the cable core 1 is the conductive part of the power cable, which is used to transmit electric energy and is the main part of the power cable.

[0023] Specifically, the cable core 1 is provided with three strands, and the single strands of the tinned copper conductor 101 are tightly twisted together.

[0024] In this embodiment, the cable adopts a 3-core structure, that is, a wire with three conductors, which is usually used to connect the output of an inverter with a grounding wire to the power grid. In addition, the three-core cable can also be used for inverters with DC isolation switches to improve safety.

[0025] Specifically, the reinforcing steel wires 4 are located between the cable cores 1 , and the reinforcing steel wires 4 are wrapped in the glass fiber filling rope 3 .

[0026] In this embodiment, the inner layer of glass fiber filling rope 3 has good insulation, strong heat resistance and good corrosion resistance, and can be combined with the reinforcing steel wire 4 to enhance the hardness and strength of the cable, making the cable more durable and long-lasting.

[0027] Specifically, the outer wall of the cross-linked polyethylene insulation layer 6 is provided with convex strips 10 , and the convex strips 10 are evenly distributed on the cross-linked polyethylene insulation layer 6 .

[0028] In this embodiment, the cross-linked polyethylene insulation layer 6 is characterized by good insulation performance, ability to withstand high voltage, good heat resistance and high chemical stability. The convex strip 10 is used to increase the gap between the cross-linked polyethylene insulation layer 6 and the polyvinyl chloride sheath 9 to facilitate the filling of the polyester filling tape 7.

[0029] Specifically, the stainless steel foil 8 is wrapped on the convex strip 10 , and the polyester filling tape 7 is filled in the gap between the stainless steel foil 8 and the convex strip 10 .

[0030] In this embodiment, the outer polyester filling tape 7 has high mechanical strength, excellent insulation performance, and is resistant to high and low temperatures. Combined with the use of the stainless steel foil 8, the cable is not easily aged and failed due to external factors.

[0031] When in use, the weather-resistant photovoltaic cable is provided with a two-layer filling structure. The inner layer of the glass fiber filling rope 3 has good insulation, strong heat resistance, and good corrosion resistance. Together with the reinforcing steel wire 4, it can enhance the hardness and strength of the cable, making the cable more durable and long-lasting. The outer layer of the polyester filling belt 7 has high mechanical strength, excellent insulation performance, and is resistant to high and low temperatures. Together with the use of stainless steel foil 8, the cable is not easily aged and failed due to external factors. At the same time, the cross-linked polyethylene insulation layer 6 and the polyvinyl chloride sheath 9 of the cable have good weather resistance and can be used for a long time in outdoor environments.

[0032] In summary, the weather-resistant photovoltaic cable is provided with a two-layer filling structure. The inner layer of the glass fiber filling rope 3 has good insulation, strong heat resistance, and good corrosion resistance. Together with the reinforcing steel wire 4, it can enhance the hardness and strength of the cable, making the cable more durable and long-lasting. The outer layer of the polyester filling belt 7 has high mechanical strength, excellent insulation performance, and is resistant to high and low temperatures. Together with the use of stainless steel foil 8, the cable is not easily aged and failed due to external factors. At the same time, the cross-linked polyethylene insulation layer 6 and the polyvinyl chloride sheath 9 of the cable have good weather resistance and can be used for a long time in outdoor environments.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A weather-resistant photovoltaic cable, comprising a cable core (1), characterized in that: The outer side of the cable core (1) is wrapped with an aluminum-plastic composite tape (2), a glass fiber filling rope (3) and a reinforcing steel wire (4) are respectively arranged between the cable core (1) and the aluminum-plastic composite tape (2), the outer side of the aluminum-plastic composite tape (2) is wrapped with a water-blocking tape (5), the outer side of the water-blocking tape (5) is wrapped with a cross-linked polyethylene insulation layer (6), the outer side of the cross-linked polyethylene insulation layer (6) is wrapped with a polyester filling tape (7), the outer side of the polyester filling tape (7) is wrapped with a stainless steel foil (8), and the outer side of the stainless steel foil (8) is wrapped with a polyvinyl chloride sheath (9).

2. A weather-resistant photovoltaic cable according to claim 1, characterized in that: The cable core (1) comprises a tinned copper conductor (101) and a PE insulation layer (102), wherein the PE insulation layer (102) is wrapped around the tinned copper conductor (101).

3. A weather-resistant photovoltaic cable according to claim 2, characterized in that: The cable core (1) is provided with three strands, and the single strands of the tinned copper conductor (101) are tightly twisted together.

4. A weather-resistant photovoltaic cable according to claim 1, characterized in that: The reinforcing steel wires (4) are located between the cable cores (1) and are wrapped in glass fiber filling ropes (3).

5. A weather-resistant photovoltaic cable according to claim 1, characterized in that: The outer wall of the cross-linked polyethylene insulation layer (6) is provided with convex strips (10), and the convex strips (10) are evenly distributed on the cross-linked polyethylene insulation layer (6).

6. A weather-resistant photovoltaic cable according to claim 5, characterized in that: The stainless steel foil (8) is wrapped on the convex strip (10), and the polyester filling tape (7) is filled in the gap between the stainless steel foil (8) and the convex strip (10).

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