Multifunctional photovoltaic composite rat-proof and termite-proof cable

Abstract

The utility model belongs to the field of cables, and provides a multifunctional photovoltaic composite anti-rat and anti-termite cable, which comprises a cable consisting of a power transmission unit, a signal transmission unit, a reinforcing unit and a sheath layer, wherein the power transmission unit comprises two insulated wires which are arranged in parallel, and the insulated wires are used for transmitting electric energy. Compared with the prior art, the cable has the advantages that power transmission, signal transmission and mechanical protection are integrated in one cable, so that the wiring work of a photovoltaic power generation system is simplified, the number of required cables is reduced, and the material cost and the construction difficulty are reduced; and meanwhile, the tensile strength and compressive strength of the cable are remarkably improved by utilizing the reinforcing unit, so that the cable can adapt to application requirements in various complex environments, and the sheath layer extrusion type extrusion process is matched, so that the safety of the cable is ensured, the release of harmful substances is avoided, and the modern environmental protection requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the cable field, concretely relates to a multifunctional photovoltaic composite rat and termite prevention cable. BACKGROUND

[0002] With the rapid development of photovoltaic power generation technology, the performance requirements of photovoltaic cables are getting higher and higher. The traditional photovoltaic cable usually only has a single power transmission function, and has the following disadvantages in actual application:

[0003] 1. Complex wiring: photovoltaic power generation systems require laying a large number of cables, including power cables, signal cables, etc. The wiring is complex and the construction is difficult.

[0004] 2. High cost: multiple cables are laid separately, increasing material and construction costs.

[0005] 3. Inconvenient maintenance: multiple cables are arranged separately, which brings inconvenience to later maintenance. INVENTION CONTENTS

[0006] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a multifunctional photovoltaic composite rat and termite prevention cable that simplifies overall wiring, improves cable tensile and compressive strength, and ensures cable safety.

[0007] The utility model solves the technical problems by adopting the following technical scheme: a multifunctional photovoltaic composite rat and termite prevention cable is provided, which comprises a cable composed of a power transmission unit, a signal transmission unit, a reinforcing unit, and a sheath layer;

[0008] The power transmission unit comprises two parallel insulated conductors, and the insulated conductors are used for transmitting electric energy.

[0009] The signal transmission unit comprises two parallel shielded twisted pairs and an aluminum foil shielding layer wrapped around the shielded twisted pairs for transmitting cable signals.

[0010] The reinforcing unit is arranged between the power transmission unit and the signal transmission unit and located at the center of the cable.

[0011] The sheath layer is extruded and has an inner sheath and an outer sheath. The inner sheath is filled between the power transmission unit, the signal transmission unit, and the reinforcing unit, and the outer sheath is wrapped outside the inner sheath to protect the wire core structure of the cable.

[0012] In the above-mentioned multifunctional photovoltaic composite rat and termite prevention cable, the sheath layer is made of halogen-free low-smoke flame-retardant polyolefin rat and termite prevention material.

[0013] In the multifunctional photovoltaic composite rat and termite-proof cable, the insulating wire comprises a conductor and a 125 DEG C irradiation crosslinking halogen-free low-smoke flame-retardant polyolefin insulation layer wrapped around the conductor.

[0014] In the multifunctional photovoltaic composite rat and termite-proof cable, the outer sheath material component adds polyether ether ketone material and capsaicin acrylate.

[0015] In the multifunctional photovoltaic composite rat and termite-proof cable, the shielding twisted pair wire comprises a silver-plated copper conductor and a foamed polyethylene insulation layer wrapped outside the silver-plated copper conductor.

[0016] In the multifunctional photovoltaic composite rat and termite-proof cable, the thickness of the outer sheath is 1.0-1.5 mm.

[0017] In the multifunctional photovoltaic composite rat and termite-proof cable, the reinforcing unit adopts aramid fiber or steel wire rope.

[0018] In the multifunctional photovoltaic composite rat and termite-proof cable, the outer diameter of the cable is 10.0-12.0 mm.

[0019] In the multifunctional photovoltaic composite rat and termite-proof cable, the conductor adopts TXR tin-plated copper round copper wire.

[0020] In the multifunctional photovoltaic composite rat and termite-proof cable, the long-term working temperature of the cable is -40-120 DEG C.

[0021] Compared with the prior art, the multifunctional photovoltaic composite rat and termite-proof cable has the following beneficial effects:

[0022] (1) The multifunctional photovoltaic composite rat and termite-proof cable integrates power transmission, signal transmission and mechanical protection in one cable, greatly simplifies the wiring work of the photovoltaic power generation system, reduces the number of cables required, thereby reducing the material cost and construction difficulty, and simultaneously significantly improves the tensile strength and compressive strength of the cable by using the reinforcing unit, so that the cable can adapt to application requirements in various complex environments, and the sheath layer extrusion process is used, which not only ensures the safety of the cable, but also avoids the release of harmful substances, and meets the modern environmental protection requirements.

[0023] (2) The polyether ether ketone (PEEK) material has the function of preventing ants, so that the material hardness is relatively high, the chemical structure is stable, and the material is not easy to be bitten or decomposed by ants.

[0024] (3) The 125 DEG C irradiation crosslinking halogen-free low-smoke flame-retardant polyolefin insulation material has excellent high-temperature resistance, flame retardation, low smoke and electrical properties, effectively improves the overall performance of the cable, and prolongs the service life. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of the present application.

[0026] In the figure, 1, power transmission unit; 10, insulated wire; 100, conductor; 101, halogen-free low-smoke flame-retardant polyolefin insulation layer; 2, signal transmission unit; 20, shielded twisted pair; 200, silver-plated copper conductor; 201, foamed polyethylene insulation layer; 21, aluminum foil shielding layer; 3, reinforcing unit; 4, sheath layer; 40, inner sheath; 41, outer sheath. DETAILED DESCRIPTION

[0027] The following is a specific embodiment of the present application and further describes the technical solutions of the present application in conjunction with the drawings, but the present application is not limited to these embodiments.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0029] As Figure 1 shown, the utility model discloses a multifunctional photovoltaic composite rat and termite prevention cable, including by power transmission unit 1, signal transmission unit 2, reinforcing unit 3 and sheath layer 4 the cable.

[0030] Specifically, the power transmission unit 1 in the embodiment includes two parallel insulated wires 10, which are used for transmitting electric energy; the signal transmission unit 2 includes two parallel shielded twisted pairs 20 and an aluminum foil shielding layer 21 wrapped around the shielded twisted pairs 20, which are used for transmitting cable signals; the reinforcing unit 3 is arranged between the power transmission unit 1 and the signal transmission unit 2 and located at the center position of the cable; the sheath layer 4 is extruded and has an inner sheath 40 and an outer sheath 41, the inner sheath 40 is filled between the power transmission unit 1, the signal transmission unit 2 and the reinforcing unit 3, and the outer sheath 41 is wrapped outside the inner sheath 40 to protect the core structure of the cable.

[0031] As Figure 1As shown, the embodiment integrates power transmission, signal transmission and mechanical protection, uses two parallel insulated conductors 10 to transmit electric energy, has good electrical conductivity, and preferably can be wrapped with insulating material (such as PVC) to prevent current leakage and short circuit phenomenon, thereby improving safety in use; shielding twisted pair 20 is used to transmit cable signals, which reduces electromagnetic interference (EMI) and ensures signal clarity and integrity, and the aluminum foil shielding layer 21 further enhances the anti-interference ability and protects the signal from external environment. Figure 1 As shown, the reinforcing unit 3 can enhance the mechanical strength of the cable, which helps to prevent the cable from being physically damaged during installation, such as stretching, extrusion, etc.; in order to make the cable core round, the cable structure of the embodiment does not set a filling material, but relies on the extrusion process to fill the inner sheath 40 between the three units, ensuring that they are closely arranged and cannot move relative to each other, thereby maintaining the stability of the internal structure of the cable, and the outer sheath 41 provides an additional protective layer to resist damage to the cable from external environmental factors (such as water, chemicals, rodents, etc.). As can be seen, with the introduction of the reinforcing unit 3 and the double sheath design, the overall mechanical strength and durability of the cable are greatly improved, making it more suitable for various complex construction environments, while allowing for easier operation when maintenance or replacement is required, reducing maintenance costs and time.

[0032] Preferably, the sheath layer 4 in the embodiment uses a halogen-free low-smoke flame-retardant polyolefin rat-proof and termite-proof material. Compared with traditional flame-retardant materials, the halogen-free low-smoke flame-retardant polyolefin material has many advantages. First, it has good environmental performance and does not contain halogen elements, which will not produce toxic and harmful gases and substances, and is very friendly to human health and environmental protection; second, it has good flame-retardant performance, can effectively prevent fire and reduce fire loss, and also has low smoke, low toxicity, low pollution, low flammability and other properties, and is suitable for a wide range of applications.

[0033] Further preferably, the sheath layer 4 in the embodiment has the functions of preventing heat and termite bites, and also adds capsaicin acrylate as a rat-proof material in the sheath material composition, which drives rats through the pungent and irritating taste; polyether ether ketone (PEEK) material is also added, which has termite-proof function, high material hardness, and stable chemical structure, and is not easy to be bitten or decomposed by ants.

[0034] The insulated conductor 10 includes a conductor 100 and a 125℃ radiation cross-linked halogen-free low-smoke flame-retardant polyolefin insulation layer 101 wrapped around the conductor 100.

[0035] Further preferably, as Figure 1As shown, the 125℃ irradiation cross-linked halogen-free low-smoke flame-retardant polyolefin insulation layer 101 is wrapped outside the conductor 100. This insulation material is treated by irradiation during manufacturing, making its molecular structure more compact, thereby improving heat resistance and mechanical strength. In addition, the halogen-free low-smoke flame-retardant property means that under high temperature or fire conditions, the material will not release harmful gases and will automatically extinguish, reducing the risk of fire spreading, which is crucial for protecting human health and the environment. At the same time, the self-extinguishing property of the material helps to prevent the spread of fire, improving the safety factor of the cable. It should be noted that the irradiation cross-linking technology makes the molecular structure of the insulation layer more stable, significantly improving the heat resistance (up to 125℃), suitable for applications in high temperature environments. In addition, this treatment also increases the mechanical strength of the material, making the cable more durable and less prone to damage; due to its excellent heat resistance, aging resistance and flame retardant properties, the insulated wire 10 is particularly suitable for applications such as photovoltaic systems that require long-term stable operation. Even under harsh conditions, the cable can work normally, reducing maintenance requirements.

[0036] Further preferably, the conductor 100 in this embodiment uses TXR tin-plated copper round copper wire. This material has good electrical conductivity and corrosion resistance. The tin plating not only improves the oxidation resistance of the copper wire, but also further enhances the stability and welding performance of the copper wire. When current passes through, the TXR tin-plated copper round copper wire can effectively transmit electrical energy, reducing energy loss. Furthermore, the high electrical conductivity of the TXR tin-plated copper round copper wire ensures the efficiency of electrical energy transmission, reduces energy loss caused by resistance, and prolongs the service life. It is precisely because the TXR tin-plated copper round copper wire is used as the conductor 100 and the 125℃ irradiation cross-linked halogen-free low-smoke flame-retardant polyolefin is used as the insulation layer design that not only optimizes the electrical conductivity efficiency and safety of the cable, but also exhibits significant advantages in environmental protection, durability and adaptability to complex environments. These characteristics work together to ensure the reliability and durability of the cable in various application scenarios.

[0037] Further preferably, as Figure 1As shown, the shielded twisted pair cable 20 in the embodiment includes silver-plated copper conductors 200 and a foamed polyethylene insulation layer 201 covering the outside of the silver-plated copper conductors 200, wherein the silver-plated copper conductors 200 are made of high-purity copper wire coated with silver on the outer layer. By virtue of its excellent electrical conductivity, it reduces energy loss in signal transmission and improves data transmission rate and stability. In particular, in high-frequency applications, the silver-plated layer has more obvious advantages, which can significantly reduce signal attenuation. Moreover, silver has higher electrical conductivity than copper, so plating silver on the surface of the conductors 100 can significantly improve the electrical conductivity, reduce energy loss and attenuation in signal transmission. In addition, silver also has good oxidation resistance, which helps to maintain long-term stable signal transmission quality; and foamed polyethylene is a lightweight material with good dielectric properties. It forms a micro-bubble structure through a special manufacturing process, thereby reducing the density and dielectric constant of the material. This feature makes the signal encounter less dielectric loss during transmission, reducing the impact of the medium on the signal while ensuring signal strength. Combined with the aluminum foil shielding layer 21, the double protection further enhances the cable's ability to resist external electromagnetic interference, ensuring clear and error-free signals and improving the stability and reliability of signal transmission.

[0038] Further preferably, the reinforcing unit 3 in the embodiment can adopt aramid fiber or steel wire rope. Aramid fiber not only resists high temperature, but also resists the erosion of various chemicals, and is suitable for various complex environmental applications, especially in extreme temperature conditions, aramid fiber can still maintain its physical properties unchanged. The wear resistance and fatigue resistance of steel wire rope are superior, and even under the action of repeated stretching and compression for a long time, it can maintain its original strength and shape. This makes the cable show higher reliability and durability during long-term use.

[0039] Further preferably, the thickness of the outer sheath 41 in the embodiment is in the range of 1.0mm-1.5mm; the outer diameter of the cable is in the range of 10.0mm-12.0mm; and the cable is operated in an environment where the rated voltage is 1000V and the long-term working temperature of the cable is-40℃-120℃. The compact arrangement of the components inside the entire cable not only ensures the mechanical strength of the cable, but also facilitates construction and wiring operation, improves installation efficiency, and also ensures the versatility and reliability of the cable.

[0040] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0042] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A multifunctional photovoltaic composite rat-ant proof cable, characterized in that, The cable comprises a power transmission unit, a signal transmission unit, a reinforcing unit and a sheath layer; The power transmission unit comprises two parallel arranged insulated conductors for transmitting electric energy; The signal transmission unit comprises two parallel arranged shielded twisted pairs and an aluminum foil shielding layer wrapped around the shielded twisted pairs for transmitting cable signals; The reinforcing unit is arranged between the power transmission unit and the signal transmission unit and is located at the center of the cable; The sheath layer is extruded and has an inner sheath and an outer sheath, the inner sheath is filled between the power transmission unit, the signal transmission unit and the reinforcing unit, and the outer sheath is wrapped outside the inner sheath to protect the core structure of the cable.

2. A multi-functional photovoltaic composite rodent and termite resistant cable as claimed in claim 1, wherein, The sheath layer is made of halogen-free low-smoke flame-retardant polyolefin rat-proof and termite-proof material.

3. A multi-functional photovoltaic composite rodent and termite resistant cable as claimed in claim 1, wherein, The insulated conductor comprises a conductor and a 125℃ irradiation crosslinked halogen-free low-smoke flame-retardant polyolefin insulation layer wrapped around the conductor.

4. A multi-functional photovoltaic composite rodent and termite resistant cable as claimed in claim 1, wherein, The shielded twisted pair comprises a silver-plated copper conductor and a foamed polyethylene insulation layer wrapped outside the conductor.

5. The multi-functional photovoltaic composite rodent and termite resistant cable of claim 1, wherein, The thickness of the outer sheath is 1.0mm-1.5mm.

6. A multi-functional photovoltaic composite rodent and termite resistant cable as defined in claim 1, wherein, The reinforcing unit is made of aramid fiber or steel wire rope.

7. A multi-functional photovoltaic composite rodent and termite resistant cable as defined in claim 1, wherein, The outer diameter of the cable is 10.0mm-12.0mm.

8. A multi-functional photovoltaic composite rodent and termite resistant cable as defined in claim 3, wherein, The conductor is made of TXR tin-plated copper round copper wire.

9. The multi-functional photovoltaic composite rodent and termite resistant cable of claim 1, wherein, The long-term operating temperature of the cable is -40℃-120℃.

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