High-flexibility salt-fog-resistant photovoltaic cable

Abstract

The utility model discloses a photovoltaic cable with high flexibility and salt spray resistance, which relates to the field of cables and comprises a cable body, the cable body is formed by combining conductors, a high-electrical-performance ethylene-propylene rubber insulating layer and a weather-resistant chlorosulfonated polyethylene outer sheath, the weather-resistant chlorosulfonated polyethylene outer sheath is sleeved on the high-electrical-performance ethylene-propylene rubber insulating layer, and the high-electrical-performance ethylene-propylene rubber insulating layer is sleeved on the weather-resistant chlorosulfonated polyethylene outer sheath. The weather-resistant chlorosulfonated polyethylene outer sheath sleeves the conductor, the cable body is movably provided with an installation shield and a driving shield, and the side surface of the driving shield is fixedly provided with an annular sleeve. According to the utility model, the sheath layer and the insulating layer are in close contact, can be peeled off and do not damage each other, so that the bending performance of the cable can be greatly improved, the internal structure of the cable is protected from mechanical damage, the service life of the cable is prolonged, and the chlorosulfonated polyethylene has certain flame retardant performance in terms of flame retardant performance; the cable can reduce the combustion risk of the cable in a fire or other emergencies, can prevent the fire from spreading, and is high in overall safety.

Description

Technical Field

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

[0002] Due to the high power consumption in coastal areas, the development of new energy is limited by land resources. On the one hand, coastal provinces and cities are rich in marine resources. Under the same lighting conditions, the power generation efficiency of marine photovoltaics is much higher than that of ground photovoltaics. The coordinated development of marine photovoltaics and marine wind power can effectively optimize investment costs. The construction scenarios of photovoltaic power stations are diverse, including wind-solar complementarity, fish-solar complementarity, wind-solar-storage microgrids, etc.

[0003] In the existing technology, the air humidity in coastal areas is high, the salt spray is highly corrosive, and there are abnormal sea breezes and waves impacting, so higher requirements are placed on component cables, such as resistance to water vapor erosion, resistance to salt spray corrosion, resistance to ultraviolet rays, resistance to biological attachment, damage to cables, and high mechanical strength requirements. Therefore, a highly flexible and salt spray resistant photovoltaic cable is needed to meet people's needs. Utility Model Content

[0004] The purpose of the utility model is to provide a highly flexible salt spray resistant photovoltaic cable to solve the problems raised in the above background technology, such as high air humidity, strong salt spray corrosion, abnormal sea breeze and wave impact in coastal areas, which puts forward higher requirements on component cables, such as resistance to water vapor erosion, resistance to salt spray corrosion, resistance to ultraviolet rays, resistance to biological attachment, cable damage and high mechanical strength requirements.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A highly flexible, salt-spray-resistant photovoltaic cable comprises a cable body, wherein the cable body is composed of a conductor, an EPDM rubber insulation layer with high electrical performance, and a weather-resistant chlorosulfonated polyethylene outer sheath, wherein the weather-resistant chlorosulfonated polyethylene outer sheath is sleeved on the EPDM rubber insulation layer with high electrical performance, and the weather-resistant chlorosulfonated polyethylene outer sheath is sleeved on the conductor, an installation shield and a driving shield are movably mounted on the cable body, an annular sleeve is fixedly mounted on the side of the driving shield, a rotating brush is rotatably mounted in the annular sleeve, the rotating brush is movably sleeved on the conductor, an arc groove is provided on both the installation shield and the driving shield, and the cable body is slidably mounted in the arc groove.

[0007] Preferably, the conductor is a Class 5 annealed tinned copper conductor, the cross-sectional area of ​​the conductor is 1.535 mm2, the diameter of the tinned copper monofilament ranges from 0.24 to 0.39 mm, and the diameter deviation of the tinned copper monofilament is ±0.002-±0.004 mm.

[0008] Preferably, the high electrical performance EPDM rubber insulation layer has a thickness of 1.0 to 1.2 mm.

[0009] Preferably, the weather-resistant chlorosulfonated polyethylene outer sheath and the weather-resistant chlorosulfonated polyethylene sheath have a thickness of 0.8 to 1.1 mm.

[0010] Preferably, a driving motor is fixedly mounted on the driving shield, a driving gear is fixedly mounted on the output end of the driving motor, a connecting groove is provided on the annular sleeve, a driven gear ring is fixedly sleeved on the rotating brush, and the driven gear ring is meshed with the driving gear.

[0011] Preferably, two limiting grooves are provided in an annular manner on the inner wall of the annular sleeve, limiting rings are rotatably installed in the two limiting grooves, and the two limiting rings are fixedly installed on the rotating brush.

[0012] Preferably: two driving wheel mounting frames are fixedly mounted on the driving shield, and the same electronic driving wheel is rotatably mounted on the two driving wheel mounting frames; two driven wheel mounting frames are fixedly mounted on the driving shield, and the same driven wheel is rotatably mounted on the two driven wheel mounting frames.

[0013] Preferably, connecting blocks are fixedly mounted on the installation shield and the driving shield, and the same connecting bolt is threadedly mounted on the two connecting blocks.

[0014] The beneficial effects of the utility model are:

[0015] The utility model conductor is composed of multiple tinned copper wires with a diameter not exceeding 0.4mm, which are twisted in the same direction and twisted in multiple layers. The diameter of the copper wire varies according to the size of the core conductor, which improves the bending ability and anti-corrosion performance of the cable. The insulation adopts high-quality high-electrical performance ethylene-propylene rubber insulation material, which is non-toxic and harmless, has excellent electrical performance, and has excellent heat resistance and cold resistance. It has good weather resistance, good chemical stability, good environmental protection performance, and excellent processing performance. The outer sheath adopts weather-resistant chlorosulfonated polyethylene, which has excellent aging resistance and weather resistance, and can maintain good physical and mechanical properties under long-term exposure to ultraviolet rays, ozone and temperature changes outdoors. Even without reinforcement treatment, it has high tensile strength and wear resistance. The sheath layer is in close contact with the insulation layer, and can be peeled off without damaging each other, which can greatly improve the bending performance of the cable, protect the internal structure of the cable from mechanical damage, and extend the service life of the cable. In addition, the chlorosulfonated polyethylene has good waterproof and corrosion resistance. In terms of environmental protection performance, the chlorosulfonated polyethylene does not contain halogen or other harmful substances, which meets the environmental protection requirements of the modern wire and cable industry to a certain extent. In terms of flame retardant properties, chlorosulfonated polyethylene has certain flame retardant properties, which can reduce the risk of burning of cables in fire or other emergencies, and can prevent the spread of fire, with high overall safety.

[0016] The installation shield and driving shield of the highly flexible salt-spray resistant photovoltaic cable and their internal structures can be set at the interface, or at the repair site after the cable is damaged, or can be set in a certain section with a very harsh environment. The movable rotating brush can be used to clean the attached organisms, salt-spray corrosion and other impurities on the cable to avoid damage to the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a highly flexible salt-fog resistant photovoltaic cable proposed by the utility model;

[0018] Figure 2 This is a schematic structural diagram of the cable portion of a highly flexible, salt-fog-resistant photovoltaic cable proposed in the utility model;

[0019] Figure 3 This is a side view structural schematic diagram of a highly flexible salt-fog resistant photovoltaic cable proposed by the utility model;

[0020] Figure 4 This is a structural schematic diagram of a cross-section of a highly flexible, salt-fog-resistant photovoltaic cable proposed by the utility model.

[0021] In the figure: 100, cable body; 101, conductor; 102, high electrical performance EPDM rubber insulation layer; 103, weather-resistant chlorosulfonated polyethylene outer sheath; 200, installation cover; 201, drive cover; 202, annular sleeve; 203, rotating brush; 204, connecting groove; 205, drive motor; 206, drive gear; 207, driven gear ring; 208, limit groove; 209, limit ring; 210, arc groove; 300, drive wheel mounting frame; 301, electronic drive wheel; 302, driven wheel mounting frame; 303, driven wheel; 400, connecting block; 401, connecting bolt. DETAILED DESCRIPTION

[0022] 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 of the embodiments.

[0023] Reference Figure 1-4A highly flexible, salt-spray-resistant photovoltaic cable comprises a cable body 100, wherein the cable body 100 is composed of a conductor 101, a high-electrical-performance EPDM rubber insulation layer 102, and a weather-resistant chlorosulfonated polyethylene outer sheath 103, wherein the weather-resistant chlorosulfonated polyethylene outer sheath 103 is sleeved on the high-electrical-performance EPDM rubber insulation layer 102, and the weather-resistant chlorosulfonated polyethylene outer sheath 103 is sleeved on the conductor 101, and an installation shield 200 and a driving shield 201 are movably mounted on the cable body 100, an annular sleeve 202 is fixedly mounted on the side of the driving shield 201, a rotating brush 203 is rotatably mounted in the annular sleeve 202, and the rotating brush 203 is movably sleeved on the conductor 101, an arc groove 210 is provided on both the installation shield 200 and the driving shield 201, and the cable body 100 is slidably mounted in the arc groove 210, and the conductor is composed of a plurality of wires having a diameter not exceeding 0.4 The tinned copper wire of mm is composed of co-directional bundle twisting and multi-layer twisting. The diameter of the copper wire varies according to the size of the core conductor. The bending ability and corrosion resistance of the cable are improved. The insulation adopts high-quality high-electrical performance EPDM rubber insulation material, which is non-toxic and harmless, with excellent electrical performance, excellent heat resistance and cold resistance, good weather resistance, good chemical stability, good environmental protection characteristics, and excellent processing performance. The outer sheath adopts weather-resistant chlorosulfonated polyethylene, which has excellent aging resistance and weather resistance. It can maintain good physical and mechanical properties under long-term exposure to ultraviolet rays, ozone and temperature changes outdoors. Even without reinforcement treatment, it has high tensile strength and wear resistance. The sheath layer is in close contact with the insulation layer, and can be peeled off without damaging each other, which can greatly improve the bending performance of the cable, protect the internal structure of the cable from mechanical damage, and extend the service life of the cable. In addition, chlorosulfonated polyethylene has good waterproof and corrosion resistance. In terms of environmental protection performance, chlorosulfonated polyethylene does not contain halogens or other harmful substances, which meets the environmental protection requirements of the modern wire and cable industry to a certain extent. In terms of flame retardant properties, chlorosulfonated polyethylene has certain flame retardant properties, which can reduce the risk of burning of cables in fire or other emergencies, and can prevent the spread of fire, with high overall safety.

[0024] It should be noted that the installation shield 200, the driving shield 201 and the internal structure of the highly flexible salt spray resistant photovoltaic cable can be set at the interface, or at the repair site after the cable is damaged, or in a certain section with a very harsh environment.

[0025] In an optional embodiment: the conductor 101 is a Class 5 annealed tinned copper conductor, the cross-sectional area of ​​the conductor 101 is 1.535 mm2, the diameter of the tinned copper monofilament ranges from 0.24 to 0.39 mm, and the diameter deviation of the tinned copper monofilament is ±0.002-±0.004 mm.

[0026] In an optional embodiment: the high electrical performance EPDM rubber insulation layer 102 has a thickness of 1.0 to 1.2 mm and is composed of multiple tinned copper wires with a diameter not exceeding 0.4 mm, which are twisted in the same direction and multiple layers. The diameter of the copper wire varies depending on the size of the core conductor, which improves the bending ability and corrosion resistance of the cable. The insulation adopts high-quality high electrical performance EPDM rubber insulation material, which is non-toxic and harmless, has excellent electrical properties, and has excellent heat and cold resistance. It has good weather resistance, good chemical stability, good environmental protection characteristics, and excellent processing performance. The outer sheath adopts weather-resistant chlorosulfonated polyethylene, which has excellent aging resistance and weather resistance, and can maintain good physical and mechanical properties under long-term exposure to ultraviolet rays, ozone and temperature changes outdoors. Even without reinforcement treatment, it has high tensile strength and wear resistance.

[0027] In an optional embodiment: the weather-resistant chlorosulfonated polyethylene outer sheath 103 weather-resistant chlorosulfonated polyethylene sheath has a thickness of 0.8 to 1.1 mm, the sheath layer is in close contact with the insulating layer, and can be peeled off without damaging each other, which can greatly improve the bending performance of the cable, protect the internal structure of the cable from mechanical damage, and extend the service life of the cable. In addition, chlorosulfonated polyethylene has good waterproof and corrosion resistance. In terms of environmental protection performance, chlorosulfonated polyethylene does not contain halogens or other harmful substances, which to a certain extent meets the environmental protection requirements of the modern wire and cable industry. In terms of flame retardant performance, chlorosulfonated polyethylene has certain flame retardant properties, which can reduce the risk of burning of cables in fire or other emergencies, and can prevent the spread of fire, and has high overall safety.

[0028] In an optional embodiment: Figure 4 As shown, a driving motor 205 is fixedly mounted on the driving shield 201, a driving gear 206 is fixedly mounted on the output end of the driving motor 205, a connecting groove 204 is provided on the annular sleeve 202, a driven gear ring 207 is fixedly sleeved on the rotating brush 203, the driven gear ring 207 is meshed with the driving gear 206, two limiting grooves 208 are provided in an annular manner on the inner wall of the annular sleeve 202, limiting rings 209 are rotatably mounted in the two limiting grooves 208, and the two limiting rings 209 are fixedly mounted on the rotating brush 203, two driving wheel mounting frames 300 are fixedly mounted on the driving shield 201, the same electronic driving wheel 301 is rotatably mounted on the two driving wheel mounting frames 300, and two driven wheel mounting frames 302 are fixedly mounted on the driving shield 201, the same driven wheel 303 is rotatably mounted on the two driven wheel mounting frames 302.

[0029] like Figure 1As shown, the installation shield 200 and the driving shield 201 are both fixedly installed with a connecting block 400, and the same connecting bolt 401 is threadedly installed on the two connecting blocks 400. It should be noted that the installation shield 200 and the driving shield 201 are installed on the cable body 100 using the connecting block 400 and the connecting bolt 401, and the electronic driving wheel 301 and the driven wheel 303 cooperate with each other to drive the device to a movable position on the cable body 100, and the driving motor 205 is started. The output end of the driving motor 205 drives the driving gear 206 to rotate, and the driving gear 206 drives the driven gear ring 207 to rotate, so that the rotating brush 203 rotates on the inner wall of the annular sleeve 202, and the rotating rotating brush 203 can remove impurities such as biological substances and salt spray corrosion attached to the cable body 100.

[0030] Working principle of this utility model:

[0031] The conductor 1 is a Class 5 tinned copper conductor with a cross-sectional area of ​​1.5-35 mm2, and the diameter of the tinned copper monofilament is in the range of 0.24-0.39 mm, and the diameter deviation of the tinned copper monofilament is ±0.002-±0.004 mm. An insulating layer 2 is arranged outside the conductor 1, and the insulating layer 2 is a high electrical performance EPDM rubber insulating layer with a thickness of 1.0-1.2 mm, which constitutes an insulated wire core, and an outer sheath 3 is arranged outside the high electrical performance EPDM rubber insulating layer, and the outer sheath 3 is a weather-resistant chlorosulfonated polyethylene sheath with a thickness of 0.8-1.1 mm. The utility model has a reasonable overall structure. The conductor is composed of multiple tinned copper wires with a diameter not exceeding 0.4mm, which are twisted in the same direction and multi-layered. The diameter of the copper wire varies according to the size of the core conductor, which improves the bending ability and anti-corrosion performance of the cable. The insulation adopts high-quality high-electrical performance ethylene-propylene rubber insulation material, which is non-toxic and harmless, has excellent electrical performance, and has excellent heat resistance and cold resistance. It has good weather resistance, good chemical stability, good environmental protection performance, and excellent processing performance. The outer sheath adopts weather-resistant chlorosulfonated polyethylene, which has excellent aging resistance and weather resistance, and can maintain good physical and mechanical properties under long-term exposure to ultraviolet rays, ozone and temperature changes outdoors. Even without reinforcement treatment, it has high tensile strength and wear resistance. The sheath layer is in close contact with the insulation layer, and can be peeled off without damaging each other, which can greatly improve the bending performance of the cable, protect the internal structure of the cable from mechanical damage, and extend the service life of the cable. In addition, the chlorosulfonated polyethylene has good waterproof and corrosion resistance. In terms of environmental protection performance, the chlorosulfonated polyethylene does not contain halogens or other harmful substances, which meets the environmental protection requirements of the modern wire and cable industry to a certain extent. In terms of flame retardancy, chlorosulfonated polyethylene has certain flame retardancy, which can reduce the risk of burning of cables in fire or other emergencies, and can prevent the spread of fire, with high overall safety;

[0032] The installation shield 200 and the driving shield 201 are installed on the cable body 100 using the connecting block 400 and the connecting bolt 401, and the electronic driving wheel 301 and the driven wheel 303 cooperate with each other to drive the device to a movable position on the cable body 100, and the driving motor 205 is started, and the output end of the driving motor 205 drives the driving gear 206 to rotate, and the driving gear 206 drives the driven gear ring 207 to rotate, so that the rotating brush 203 rotates on the inner wall of the annular sleeve 202, and the rotating brush 203 can remove the organisms and impurities attached to the cable body 100.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A highly flexible salt-spray resistant photovoltaic cable, comprising a cable body (100), characterized in that: The cable body (100) is composed of a conductor (101), an EPDM rubber insulation layer (102) with high electrical performance, and a weather-resistant chlorosulfonated polyethylene outer sheath (103); the weather-resistant chlorosulfonated polyethylene outer sheath (103) is sleeved on the EPDM rubber insulation layer (102) with high electrical performance, and the weather-resistant chlorosulfonated polyethylene outer sheath (103) is sleeved on the conductor (101); a mounting shield (200) and a driving shield (201) are movably mounted on the cable body (100); an annular sleeve (202) is fixedly mounted on the side of the driving shield (201); a rotating brush (203) is rotatably mounted in the annular sleeve (202); the rotating brush (203) is movably sleeved on the conductor (101); an arc groove (210) is provided on both the mounting shield (200) and the driving shield (201); and the cable body (100) is slidably mounted in the arc groove (210).

2. A highly flexible salt spray resistant photovoltaic cable according to claim 1, characterized in that: The conductor (101) is a Class 5 annealed tinned copper conductor, the cross-sectional area of ​​the conductor (101) is 1.535 mm2, the diameter of the tinned copper single wire ranges from 0.24 to 0.39 mm, and the diameter deviation of the tinned copper single wire is ±0.002-±0.004 mm.

3. A highly flexible salt spray resistant photovoltaic cable according to claim 1, characterized in that: The high electrical performance EPDM rubber insulation layer (102) has a thickness of 1.0 to 1.2 mm.

4. A highly flexible salt spray resistant photovoltaic cable according to claim 1, characterized in that: The weather-resistant chlorosulfonated polyethylene outer sheath (103) is a weather-resistant chlorosulfonated polyethylene sheath with a thickness of 0.8 to 1.1 mm.

5. The highly flexible salt spray resistant photovoltaic cable according to claim 1, characterized in that: A driving motor (205) is fixedly mounted on the driving shield (201), a driving gear (206) is fixedly mounted on the output end of the driving motor (205), a connecting groove (204) is provided on the annular sleeve (202), a driven gear ring (207) is fixedly sleeved on the rotating brush (203), and the driven gear ring (207) is meshed with the driving gear (206).

6. The highly flexible salt spray resistant photovoltaic cable according to claim 1, characterized in that: Two limiting grooves (208) are provided in an annular manner on the inner wall of the annular sleeve (202), and limiting rings (209) are rotatably installed in the two limiting grooves (208), and the two limiting rings (209) are fixedly installed on the rotating brush (203).

7. The highly flexible salt spray resistant photovoltaic cable according to claim 1, characterized in that: Two driving wheel mounting frames (300) are fixedly mounted on the driving shield (201), and the same electronic driving wheel (301) is rotatably mounted on the two driving wheel mounting frames (300); two driven wheel mounting frames (302) are fixedly mounted on the driving shield (201), and the same driven wheel (303) is rotatably mounted on the two driven wheel mounting frames (302).

8. The highly flexible salt spray resistant photovoltaic cable according to claim 1, characterized in that: The installation shield (200) and the driving shield (201) are both fixedly mounted with a connection block (400), and the two connection blocks (400) are threadedly mounted with a same connection bolt (401).

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