Photovoltaic systems use water-tight control flexible cables

Abstract

This utility model belongs to the field of cable application technology, specifically disclosing a watertight control flexible cable for photovoltaic systems, including a conductor and a core. The conductor has an outer layer sequentially provided with a conductor insulation layer and a conductor shielding layer. The core has an outer layer sequentially provided with a core insulation layer and a core shielding layer. A first watertight adhesive layer fills the space between the conductor shielding layer and the core shielding layer. The outer layer of the first watertight adhesive layer is sequentially provided with an outer shielding layer, a second watertight adhesive layer, and an outer sheath. The conductor is made of multiple strands of ultra-fine oxygen-free copper wire or tin-plated copper wire, and the core is made of aluminum alloy. The advantages of this utility model are: 1. The outer sheath can withstand long-term bending and large-angle twisting, making it durable; 2. The conductor shielding layer or core shielding layer combined with the outer shielding layer achieves double-layer conductor or core shielding, providing strong anti-interference capabilities; 3. The first and second watertight adhesive layers provide double-layer waterproofing, making the overall outdoor use highly adaptable.

Description

Technical Field

[0001] This utility model belongs to the field of cable application technology, specifically relating to watertight control flexible cables for photovoltaic systems. Background Technology

[0002] When photovoltaic cables are irradiated by an accelerator during practical use, the molecular structure of the cable material changes, affecting various aspects of its performance, such as resistance to mechanical loads and cable strength. Damage to the cable insulation layer can affect the overall service life of the cable or lead to problems such as short circuits, fires, and personal injury hazards.

[0003] Therefore, when using photovoltaic cables, factors such as water resistance, twisting, and interference resistance need to be considered.

[0004] Therefore, based on the above problems, this utility model provides a watertight control flexible cable for photovoltaic systems. Utility Model Content

[0005] Purpose of the utility model: The purpose of this utility model is to provide a watertight control flexible cable for photovoltaic systems, which has excellent resistance to hydrostatic pressure, flexibility, abrasion resistance, tensile strength, interference resistance, shear resistance, resistance to damp heat, salt spray resistance, mildew resistance, and hydrolysis resistance, so as to realize the transmission of control signals and stable transmission of weak current between internal and external instruments and equipment in outdoor environments.

[0006] Technical solution: The photovoltaic system provided by this utility model uses a watertight control flexible cable, including a conductor and a core; the outer layer of the conductor is sequentially provided with a conductor insulation layer and a conductor shielding layer, the outer layer of the core is sequentially provided with a core insulation layer and a core shielding layer, a first watertight water-blocking adhesive layer is filled between the conductor shielding layer and the core shielding layer, and an outer shielding layer, a second watertight water-blocking adhesive layer and an outer sheath are sequentially provided outside the first watertight water-blocking adhesive layer; wherein, the conductor is made of multiple strands of ultra-fine oxygen-free copper wire or tin-plated copper wire twisted together, and the core is aluminum alloy.

[0007] In this technical solution, the conductor insulation layer or the wire core insulation layer is one of modified PVC, nitrile elastomer, TPE, and TPE-E.

[0008] In this technical solution, the conductor shielding layer, the core shielding layer, or the outer shielding layer is made of tin-plated copper wire braid with a braiding density greater than 85%.

[0009] In this technical solution, the first watertight water-blocking adhesive layer or the second watertight water-blocking adhesive layer is one of the water-absorbing and swelling type or the sealing and water-resistant type.

[0010] In this technical solution, the outer sheath is made of thermoplastic polyurethane elastomer rubber.

[0011] Compared with existing technologies, the advantages of the water-tight control flexible cable for photovoltaic systems of this utility model are as follows: 1. The outer sheath can withstand long-term bending and large-angle twisting, making it durable; 2. The conductor shielding layer or wire core shielding layer combined with the outer shielding layer achieves double-layer conductor or wire core shielding, resulting in strong anti-interference capabilities; 3. The first water-tight water-blocking adhesive layer and the second water-tight water-blocking adhesive layer achieve double-layer waterproofing, making the overall outdoor use highly adaptable. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of the water-tight control flexible cable for the photovoltaic system of this utility model;

[0014] The numbers in the diagram are as follows: 10-Conductor, 11-Conductor insulation layer, 12-Conductor shielding layer, 13-First watertight water-blocking adhesive layer, 14-Outer shielding layer, 15-Second watertight water-blocking adhesive layer, 16-Outer sheath, 20-Wire core, 21-Wire core insulation layer, 22-Wire core shielding layer. Detailed Implementation

[0015] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0016] In the description of this utility model, it should be noted that the terms "top," "bottom," "one side," "the other side," "front," "back," "middle part," "inner," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] Example

[0018] like Figure 1 The photovoltaic system shown uses a watertight control cable, which includes conductor 10 and core 20.

[0019] The outer layer of conductor 10 is provided with a conductor insulation layer 11 and a conductor shielding layer 12 in sequence.

[0020] The outer layer of the conductor 20 is provided with a conductor insulation layer 21 and a conductor shielding layer 22 in sequence.

[0021] A first watertight adhesive layer 13 is filled between the conductor shielding layer 12 and the wire core shielding layer 22.

[0022] The outer layer of the first watertight water-blocking adhesive layer 13 is sequentially provided with an outer shielding layer 14, a second watertight water-blocking adhesive layer 15, and an outer sheath 16.

[0023] The conductor 10 is made of multiple strands of ultra-fine oxygen-free copper wire or tin-plated copper wire, conforming to IEC60228 / VDE0925, Class 6 conductor; the core 20 is made of aluminum alloy.

[0024] In addition, preferably, the conductor insulation layer 11 or the wire core insulation layer 21 is one of modified PVC, nitrile elastomer, TPE, or TPE-E, which has good flexibility or weather resistance.

[0025] In addition, preferably, the conductor shielding layer 12, the core shielding layer 22, or the outer shielding layer 14 is made of tin-plated copper wire braid with a braiding density greater than 85%, which has the function of effectively preventing external electromagnetic interference and protecting internal current.

[0026] In addition, the first watertight water-blocking adhesive layer 13 or the second watertight water-blocking adhesive layer 15 is preferably one of the water-absorbing and swelling type or the sealing and water-resistant type, which has good waterproof function and ensures the safety of the overall cable operation.

[0027] In addition, the outer sheath 16 is preferably made of thermoplastic polyurethane elastomer rubber (TPU), which gives the cable good flexibility and twisting properties.

[0028] The photovoltaic system of this structure uses water-tight control flexible cable with the following performance characteristics: rated voltage U0 / U 300 / 300V-450 / 750V; test voltage U2000V; temperature range -40℃-80℃; bending radius 6XD.

[0029] The photovoltaic system of this structure uses water-tight control flexible cable, which is waterproof, oil-resistant, cold-resistant, weather-resistant and antimicrobial. It is also wear-resistant, bend-resistant, tear-resistant and can withstand large mechanical forces. At the same time, it has excellent bending performance, long travel distance and adaptability to bending occasions, and can achieve excellent signal transmission performance.

[0030] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] 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. Watertight control flexible cable for photovoltaic systems, characterized by the fact that: Includes conductor (10) and wire core (20); The conductor (10) is provided with a conductor insulation layer (11) and a conductor shielding layer (12) in sequence on its outer layer. The outer layer of the wire core (20) is provided with a wire core insulation layer (21) and a wire core shielding layer (22) in sequence. A first watertight adhesive layer (13) is filled between the conductor shielding layer (12) and the wire core shielding layer (22). The outer layer of the first watertight water-blocking adhesive layer (13) is sequentially provided with an outer shielding layer (14), a second watertight water-blocking adhesive layer (15), and an outer sheath (16); The conductor (10) is made of multiple strands of ultra-fine oxygen-free copper wire or tin-plated copper wire, and the core (20) is made of aluminum alloy.

2. The watertight control flexible cable for photovoltaic systems according to claim 1, characterized in that: The conductor insulation layer (11) or the core insulation layer (21) is one of modified PVC, nitrile elastomer, TPE, or TPE-E.

3. The watertight control flexible cable for photovoltaic systems according to claim 1, characterized in that: The conductor shielding layer (12), the core shielding layer (22), or the outer shielding layer (14) is made of tin-plated copper wire braid with a braiding density greater than 85%.

4. The watertight control flexible cable for photovoltaic systems according to claim 1, characterized in that: The first watertight water-blocking adhesive layer (13) or the second watertight water-blocking adhesive layer (15) is either a water-absorbing and swelling type or a sealing and water-resistant type.

5. The watertight control flexible cable for photovoltaic systems according to claim 1, characterized in that: The outer sheath (16) is made of thermoplastic polyurethane elastomer rubber.

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