CN212161318U

CN212161318U - Electrical connection anti-interference multi-core cable of photovoltaic power generation system

Info

Publication number: CN212161318U
Application number: CN202021033519.7U
Authority: CN
Inventors: 王登峰; 杨兆文; 江平; 黄建卫; 王成旺; 高旭皓
Original assignee: Zhejiang Products Zhongda Cable Co ltd; Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Current assignee: Zhejiang Products Zhongda Cable Co ltd; Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2020-12-15
Anticipated expiration: 2030-06-08

Abstract

The utility model discloses an anti-interference multicore cable of photovoltaic power generation system electrical connection, constitute the cable core by the concentric transposition of a plurality of insulation core, the outside cladding of cable core has fluororesin to wind the band layer in proper order, copper is moulded compound area and is wound the covering shielding layer, shielding layer and low smoke and zero halogen polyolefin oversheath are woven to first metal, the insulation core includes the wire core body, the inner insulating layer, shielding layer and outer insulating layer are woven to the second metal, the wire core body includes the PFA resin filler strip of central part, the compound stranded conductor of first layer tinned copper, the compound stranded conductor of second layer tinned copper and the compound stranded conductor of third layer tinned copper increase in proper order by the line footpath respectively, second tinned copper strand and third tinned copper strand constitute the transposition. The cable has better flexibility and flexibility resistance, good electromagnetic noise shielding effect, strong interference resistance, high signal transmission quality and durable use.

Description

Electrical connection anti-interference multi-core cable of photovoltaic power generation system

Technical Field

The utility model relates to the technical field of cables, especially, relate to an anti-interference multicore cable of photovoltaic power generation system electrical connection.

Background

With the rapid development of the photovoltaic power generation industry of clean energy, the photovoltaic power generation technology is promoted to be improved day by day. Photovoltaic cables are an indispensable component in photovoltaic power generation systems. The cable types of the photovoltaic power generation system mainly comprise a photovoltaic special cable, a power cable, a control cable, a communication cable and a radio frequency cable. For example, the communication cable can be suitable for alarm, security protection, computer and automatic connection under general conditions, and the like, and has high interference prevention requirements. The multi-core cable develops towards the direction of thinning and light flexibility, higher requirements are put on the multi-core cable, on the basis of ensuring the mechanical strength, the flexibility and the bending resistance of the multi-core cable are improved, the manufacturing cost is reduced, the difficulty of the installation process is reduced, and meanwhile, the safe and reliable operation of a photovoltaic power generation system is ensured.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, the technical problem that solve provides a photovoltaic power generation system electrical connection anti-interference multicore cable, and pliability, resistant flexible nature are better, and electromagnetic noise shields effectually, and the interference killing feature is strong, and signal transmission quality is high, durable use.

The utility model discloses a make above-mentioned technical problem solve through following technical scheme.

The photovoltaic power generation system is electrically connected with the anti-interference multi-core cable, a cable core is formed by concentrically twisting a plurality of insulating wire cores, the cable core is coated with a fluororesin wrapping tape layer, a copper-plastic composite tape wrapping shielding layer, a first metal braided shielding layer and a low-smoke halogen-free polyolefin outer sheath in sequence, the insulated wire core comprises a wire core body, an inner insulating layer, a second metal braided shielding layer and an outer insulating layer are coated outside the wire core body, the wire core body comprises a PFA resin filling strip at the center part, and a first layer of tin-plated copper composite stranded wire, a second layer of tin-plated copper composite stranded wire and a third layer of tin-plated copper composite stranded wire which are sequentially stranded and formed outside the PFA resin filling strip, the first layer of tin-plated copper composite stranded wire, the second layer of tin-plated copper composite stranded wire and the third layer of tin-plated copper composite stranded wire are formed by stranding a first tin-plated copper strand, a second tin-plated copper strand and a third tin-plated copper strand, wherein the diameters of the first layer of tin-plated copper composite stranded wire, the second layer of tin-plated copper composite stranded wire and the third layer of tin-plated copper composite stranded wire are sequentially increased.

Preferably, the fluororesin wrapping band layer is formed by wrapping fluororesin wrapping bands outside the cable core in a gap manner, and the winding distance of the fluororesin wrapping bands is 2 to 4 times of the band width.

Preferably, the copper-plastic composite tape lapping shielding layer is a copper-plastic composite tape lapping and lapping structure, and the copper-plastic composite tape comprises a copper foil tape outer layer and a PTFE resin inner layer.

Preferably, the first metal braided shielding layer is formed by weaving inner layer tinned copper monofilaments and outer layer tinned copper monofilaments in a reverse spiral winding mode, and the diameter of the inner layer tinned copper monofilaments is smaller than that of the outer layer tinned copper monofilaments.

Preferably, the inner insulating layer and the outer insulating layer are both FEP, PFA or ETFE resin insulating layers.

Preferably, the second metal braided shield layer is formed by mixing and spirally winding tin-plated copper monofilaments with two different wire diameters and a wire diameter ratio of 0.9 to 1.

Preferably, the second metallic braided shield layer has a braiding density of 92% to 95%.

Preferably, the diameter of the tin-plated copper monofilament used for the second metal braided shielding layer is 0.01mm to 0.05 mm.

Preferably, the first tinned copper strand, the second tinned copper strand, and the third tinned copper strand are formed by twisting a first tinned copper monofilament, a second tinned copper monofilament, and a third tinned copper monofilament, each of which has a diameter that increases in this order.

Preferably, the first tinned copper monofilament wire diameter is 0.01mm to 0.03mm, the second tinned copper monofilament wire diameter is 0.03mm to 0.05mm, and the third tinned copper monofilament wire diameter is 0.05mm to 0.08 mm.

The utility model has the advantages that:

1. the conductor part of the insulated wire core comprises three layers of tinned copper compound stranded wires, the diameters of the stranded wires forming the compound stranded wires are sequentially increased, the conductor quality is favorably reduced, the friction among the compound stranded wires is reduced, and the diameters of the tinned copper single wires forming each layer of the stranded wires are sequentially increased, for example, the diameter of the first tinned copper single wire is 0.01mm to 0.03mm, the diameter of the second tinned copper single wire is 0.03mm to 0.05mm, and the diameter of the third tinned copper single wire is 0.05mm to 0.08mm, so that the friction among the compound stranded wires of each layer is favorably reduced, the torque force in the twisting and bending process can be effectively reduced, the flexibility and the bending resistance can be favorably improved, and the flexibility is better and the wire breakage is not easy.

2. Copper is moulded compound area and is taken the lid around the package structure around the package shielding layer for copper is moulded compound area, can effectually restrain inside signal or noise leakage to outside and restrain the interference that comes from the external signal, copper is moulded compound area and is included outer and the PET film inlayer of copper foil tape, make this shielding layer be difficult for appearing the fracture phenomenon, and simultaneously, fluororesin winds the band layer and is the clearance around the package structure, fluororesin is little around the package band coefficient of friction, and the pliability is good, help reducing the stress concentration that copper is moulded compound area around the package shielding layer, reduce the torque capacity, improve antitorque commentaries on classics nature and durability.

3. The first metal braided shielding layer is formed by braiding inner-layer tinned copper monofilaments and outer-layer tinned copper monofilaments in a reverse spiral winding mode, the diameter of each inner-layer tinned copper monofilament is smaller than that of each outer-layer tinned copper monofilament, improvement of flexibility of a cable is facilitated, the braiding density of the inner-layer tinned copper monofilaments is large and helps to prevent internal high-frequency signals from leaking to the outside, the electrical resistance of the outer-layer tinned copper monofilaments is small, and interference from external signals is restrained. And, the diameter of the inner layer tinned copper monofilament is different from the diameter of the outer layer tinned copper monofilament, so that the weaving gap can be effectively reduced, the friction phenomenon generated between the tinned copper monofilaments is greatly reduced, the noise shielding characteristic is improved, the flexibility and the torsion resistance of the cable are increased, and the phenomenon of wire breakage is not easy to occur.

4. The second metal is woven the shielding layer and is adopted the mixed one-way spiral winding of tin-plated copper monofilament of two kinds of different diameters to constitute, and the diameter ratio is between 0.9 to 1, can effectual reduction weave the gap, reduces substantially the friction phenomenon that produces between the tin-plated copper monofilament to noise shielding characteristic has been improved, in addition, make the cable have better pliability, also be convenient for realize the preparation of thin footpath.

Drawings

FIG. 1 is a schematic cross-sectional structural view of an embodiment of the present application;

fig. 2 is a schematic cross-sectional structure view of an insulated wire core according to an embodiment of the present application.

In the figure: the composite cable comprises 1-an insulating wire core, 2-a fluororesin winding and wrapping layer, 3-a copper-plastic composite tape winding and wrapping shielding layers, 4-a first metal braided shielding layer, 5-a low-smoke halogen-free polyolefin outer sheath, 6-an inner insulating layer, 7-a second metal braided shielding layer, 8-an outer insulating layer, 9-PFA resin filling strips, 10-a first tinned copper strand, 11-a second tinned copper strand and 12-a third tinned copper strand.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1, the utility model discloses anti-interference multicore cable of photovoltaic power generation system electrical connection constitutes the cable core by the concentric transposition of a plurality of insulation core 1, the cable core outside cladding has fluororesin to wind band layer 2, copper-plastic composite tape around covering shielding layer 3, first metal woven shield 4 and low smoke and zero halogen polyolefin oversheath 5 in proper order. In one embodiment, the fluororesin wrapping tape layer 2 is formed by wrapping a fluororesin wrapping tape outside the cable core in a clearance manner, and the winding distance of the fluororesin wrapping tape is 2 to 4 times of the bandwidth. In one embodiment, the copper-plastic composite tape lapping and shielding layer 3 is a copper-plastic composite tape lapping and wrapping structure, and the copper-plastic composite tape comprises a copper foil tape outer layer and a PTFE resin inner layer. In one embodiment, the first metallic braided shield layer 4 is formed by braiding inner layer tinned copper monofilaments and outer layer tinned copper monofilaments in a reverse spiral winding manner, wherein the inner layer tinned copper monofilaments have a smaller diameter than the outer layer tinned copper monofilaments.

As shown in fig. 2, the insulated wire core 1 includes a core body and an outer portion of the core body is covered with an inner insulation layer 6, a second metal braided shield layer 7 and an outer insulation layer 8, for example, FEP, PFA or ETFE resin insulation layers may be used for the inner insulation layer 6 and the outer insulation layer 8. Specifically, the second metallic braided shielding layer 7 is formed by mixing and spirally winding two tinned copper monofilaments with different wire diameters and a wire diameter ratio of 0.9 to 1, preferably, the tinned copper monofilament wire diameter adopted by the second metallic braided shielding layer 7 is 0.01mm to 0.05mm, and more preferably, the braiding density of the second metallic braided shielding layer 7 is 92% to 95%.

The core body comprises a PFA resin filling strip 9 at the center and a first layer of tinned copper composite stranded wire, a second layer of tinned copper composite stranded wire and a third layer of tinned copper composite stranded wire which are sequentially stranded and formed outside the PFA resin filling strip 9, wherein the first layer of tinned copper composite stranded wire, the second layer of tinned copper composite stranded wire and the third layer of tinned copper composite stranded wire are respectively formed by stranding a first tinned copper stranded wire 10, a second tinned copper stranded wire 11 and a third tinned copper stranded wire 12, the wire diameters of which are sequentially increased. Specifically, the first tinned copper strand wire 10, the second tinned copper strand wire 11 and the third tinned copper strand wire 12 are formed by twisting a first tinned copper monofilament, a second tinned copper monofilament and a third tinned copper monofilament, the diameters of which are sequentially increased, respectively, and further, the diameter of the first tinned copper monofilament is 0.01mm to 0.03mm, the diameter of the second tinned copper monofilament is 0.03mm to 0.05mm, and the diameter of the third tinned copper monofilament is 0.05mm to 0.08 mm.

While the invention has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the claims of the present application belong to the protection scope of the present invention.

Claims

1. Anti-interference multicore cable of photovoltaic power generation system electrical connection, characterized by: the cable comprises a cable core formed by concentrically twisting a plurality of insulated wire cores (1), wherein the outside of the cable core is sequentially coated with a fluororesin wrapping tape layer (2), a copper-plastic composite tape wrapping shielding layer (3), a first metal braided shielding layer (4) and a low-smoke halogen-free polyolefin outer sheath (5), each insulated wire core (1) comprises a wire core body, the outside of the wire core body is coated with an inner insulating layer (6), a second metal braided shielding layer (7) and an outer insulating layer (8), the wire core body comprises a PFA resin filling strip (9) at the central part and is sequentially twisted to form a first tin-plated copper compound stranded wire, a second tin-plated copper compound stranded wire and a third tin-plated copper compound stranded wire outside the PFA resin filling strip (9), and the first tin-plated copper stranded wire (10), the second tin-plated copper compound stranded wire and the third tin-plated copper compound stranded wire are sequentially increased in wire diameter respectively, The second tin-plated copper strand (11) and the third tin-plated copper strand (12) are twisted.

2. The photovoltaic power generation system electrical connection anti-interference multi-core cable of claim 1, wherein: the fluororesin wrapping tape layer (2) is formed by wrapping fluororesin wrapping tapes outside the cable core in a clearance wrapping mode, and the winding distance of the fluororesin wrapping tapes is 2-4 times of the bandwidth.

3. The photovoltaic power generation system electrical connection anti-interference multi-core cable of claim 1, wherein: the copper-plastic composite tape lapping shielding layer (3) is of a copper-plastic composite tape lapping and lapping structure, and the copper-plastic composite tape comprises a copper foil tape outer layer and a PTFE resin inner layer.

4. The photovoltaic power generation system electrical connection anti-interference multi-core cable of claim 1, wherein: the first metal braided shielding layer (4) is formed by weaving inner-layer tinned copper monofilaments and outer-layer tinned copper monofilaments in a reverse spiral winding mode, and the wire diameter of the inner-layer tinned copper monofilaments is smaller than that of the outer-layer tinned copper monofilaments.

5. The photovoltaic power generation system electrical connection anti-interference multi-core cable of claim 1, wherein: the inner insulating layer (6) and the outer insulating layer (8) are both FEP, PFA or ETFE resin insulating layers.

6. The photovoltaic power generation system electrical connection anti-interference multi-core cable of claim 1, wherein: the second metal braided shielding layer (7) is formed by mixing and spirally winding two tin-plated copper monofilaments with different wire diameters and the wire diameter ratio of 0.9-1.

7. The photovoltaic power generation system electrical connection anti-interference multi-core cable of claim 6, wherein: the second metal braided shield layer (7) has a braiding density of 92% to 95%.

8. The photovoltaic power generation system electrical connection anti-interference multi-core cable of claim 6, wherein: the diameter of the tin-plated copper monofilament adopted by the second metal braided shielding layer (7) is 0.01 mm-0.05 mm.

9. The photovoltaic power generation system electrical connection anti-interference multi-core cable of claim 1, wherein: the first tinned copper strand (10), the second tinned copper strand (11) and the third tinned copper strand (12) are formed by twisting a first tinned copper monofilament, a second tinned copper monofilament and a third tinned copper monofilament, wherein the diameters of the first tinned copper strand, the second tinned copper strand and the third tinned copper strand are sequentially increased.

10. The photovoltaic power generation system electrical connection anti-interference multi-core cable of claim 9, wherein: the first tinned copper monofilament line diameter is 0.01mm to 0.03mm, the second tinned copper monofilament line diameter is 0.03mm to 0.05mm, and the third tinned copper monofilament line diameter is 0.05mm to 0.08 mm.