Mould-proof flame-retardant polyethylene power cable

Abstract

The utility model discloses a mildew-proof flame-retardant polyethylene power cable, relates to the technical field of power cable structures, and aims to solve the problems that the mildew-proof and flame-retardant performance of the existing power cable is poor, so that the cable is easy to mildew, and the use effect of the cable is influenced after a long time. The cable core is composed of a plurality of wire cores and a filling layer, the exterior of the cable core is provided with a wrapping layer, the exterior of the wrapping layer is provided with an armor layer, the exterior of the armor layer is provided with an insulating layer, the exterior of the insulating layer is provided with a flame-retardant layer, the flame-retardant layer is composed of a polyethylene flame-retardant sleeve and flame-retardant powder, and the polyethylene flame-retardant sleeve is sleeved with the flame-retardant powder. The flame-retardant powder is attached and formed through a spraying process, the outer shielding layer is arranged outside the flame-retardant layer, the mildew-proof layer is arranged outside the outer shielding layer, the outer sheath is arranged outside the mildew-proof layer, and the mildew-proof layer is composed of a protective sleeve and a mildew-proof antibacterial spray. And the exterior of the protective sleeve is sprayed with a mildew-proof antibacterial spray through a spraying process.

Description

Technical Field

[0001] The utility model relates to the technical field of power cable structures, in particular to a flame-retardant polyethylene power cable with mold prevention. Background Technique

[0002] A power cable is a cable used for transmitting and distributing electric energy. Power cables are commonly used in urban underground power grids, outgoing lines from power stations, internal power supply in industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing. A power cable is a cable product used to transmit and distribute high-power electric energy in the main lines of a power system. When a power cable is in use, it needs to have certain properties to ensure that the cable can be used well.

[0003] After retrieval, the application publication number CN107556584A discloses a cable material, specifically a flame-retardant polyethylene cable material with mold prevention, which includes: 90 - 120 parts of high-density polyethylene resin, 60 - 80 parts of linear low-density polyethylene resin, 4.5 - 8 parts of carbon black, 20 - 42 parts of flame retardant, 2 - 5 parts of composite antibacterial agent, 20 - 28 parts of zeolite, and 0.2 - 2 parts of auxiliary agent; the composite antibacterial agent includes titanium dioxide powder wrapped by polyethylene glycol and nano-silver material; the zeolite is pretreated by refinement; by adding a composite antibacterial agent and a flame retardant therein, it has both antibacterial and flame-retardant effects. At the same time, the composite antibacterial agent and the flame retardant are filled in the pore structure of the zeolite, and the zeolite powder is interspersed in the network structure formed by the blended high-density polyethylene resin and linear low-density polyethylene resin, greatly improving the retention effect of the flame retardant and the composite antibacterial agent and avoiding the loss of the composite antibacterial agent and the flame retardant.

[0004] However, the existing power cables still have poor mold prevention and flame retardant properties, resulting in easy occurrence of mold on the cables, which will affect the use effect of the cables over time. Therefore, there is an urgent need in the market for a flame-retardant polyethylene power cable with mold prevention to solve these problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a flame-retardant polyethylene power cable with mold prevention to solve the problems in the above background technique that the existing power cables still have poor mold prevention and flame retardant properties, resulting in easy occurrence of mold on the cables, which will affect the use effect of the cables over time.

[0006] To achieve the above object, the utility model provides the following technical solution: a flame-retardant polyethylene power cable with mildew prevention, including a cable core, the cable core is composed of a plurality of wire cores and a filling layer, an insulating layer is arranged outside the cable core, an armor layer is arranged outside the insulating layer, a flame-retardant layer is arranged outside the armor layer, an outer shielding layer is arranged outside the flame-retardant layer, a mildew-proof layer is arranged outside the outer shielding layer, and an outer sheath is arranged outside the mildew-proof layer.

[0007] Preferably, there are seven wire cores, each wire core is composed of a conductor, an inner shielding layer and an insulating sheath, the conductor is formed by stranding a plurality of copper wires, an inner shielding layer is arranged outside the conductor, and an insulating sheath is arranged outside the inner shielding layer.

[0008] Preferably, the filling layer is made of glass fiber filaments.

[0009] Preferably, the wrapping layer is made of mica tape, the armor layer is formed by winding steel strips, and the insulating layer is made of polyethylene.

[0010] Preferably, the flame-retardant layer is composed of a polyethylene flame-retardant sleeve and flame-retardant powder, the outside of the polyethylene flame-retardant sleeve is provided with concave holes, there are a plurality of concave holes, and the plurality of concave holes are evenly distributed outside the polyethylene flame-retardant sleeve, and the flame-retardant powder is formed by adhering through a spraying process.

[0011] Preferably, the inner shielding layer is formed by cross-weaving aluminum wires, the insulating sheath is made of polyvinyl chloride, and the outer shielding layer is formed by winding aluminum foil.

[0012] Preferably, the mildew-proof layer is composed of a protective sleeve and a mildew-proof and antibacterial spray, and the mildew-proof and antibacterial spray is sprayed on the outside of the protective sleeve through a spraying process.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. For this flame-retardant polyethylene power cable with mildew prevention, by arranging a flame-retardant layer, the flame-retardant powder is sprayed on the outside of the polyethylene flame-retardant sleeve through a spraying process, so that the flame-retardant layer can have better flame-retardant performance. The outside of the polyethylene flame-retardant sleeve is provided with concave holes, and through the arranged concave holes, the spraying effect of the flame-retardant powder can be improved, and the combination effect between the flame-retardant powder and the outside of the polyethylene flame-retardant sleeve is better, so that the flame-retardant performance of the cable can be better.

[0015] 2. This kind of anti-mildew flame-retardant polyethylene power cable is provided with an anti-mildew layer. The anti-mildew and antibacterial spray is sprayed on the outside of the protective sleeve through a spraying process, so that the outside of the protective sleeve has better anti-mildew performance. Thus, when the cable is damaged, it can avoid the internal part of the cable from easily breeding mildew, which reduces the service life of the cable and affects the use effect of the cable at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a partial front view of the present utility model;

[0017] Figure 2 is an overall cross-sectional view of the present utility model;

[0018] Figure 3 is a partially enlarged view of the flame-retardant layer of the present utility model;

[0019] Figure 4 is a partially enlarged view of the anti-mildew layer of the present utility model.

[0020] In the figures: 1, cable core; 2, conductor core; 3, filling layer; 4, conductor; 5, inner shielding layer; 6, insulating sheath; 7, wrapping layer; 8, armor layer; 9, insulating layer; 10, flame-retardant layer; 1001, polyethylene flame-retardant sleeve; 1002, flame-retardant powder; 1003, concave hole; 11, outer shielding layer; 12, anti-mildew layer; 1201, protective sleeve; 1202, anti-mildew and antibacterial spray; 13, outer sheath. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0022] Please refer to Figures 1-4 , an embodiment provided by the present utility model: a kind of anti-mildew flame-retardant polyethylene power cable, including a cable core 1, the cable core 1 is composed of a plurality of conductor cores 2 and a filling layer 3, a wrapping layer 7 is arranged outside the cable core 1, an armor layer 8 is arranged outside the wrapping layer 7, an insulating layer 9 is arranged outside the armor layer 8, a flame-retardant layer 10 is arranged outside the insulating layer 9, an outer shielding layer 11 is arranged outside the flame-retardant layer 10, an anti-mildew layer 12 is arranged outside the outer shielding layer 11, and an outer sheath 13 is arranged outside the anti-mildew layer 12. It should be noted that, in order to save space and highlight the innovative elements of this patent, such as how the cable is specifically used and the principle of how the cable is specifically anti-corrosion and flame-retardant, they will not be elaborated in this patent.

[0023] During use, the set fiberglass filling layer 3 enables the filling layer 3 to have a good flame retardant effect. At the same time, fiberglass can improve the tensile resistance effect of the cable. The set flame retardant layer 10 enables the cable to have a better flame retardant effect, and the set anti-mildew layer 12 can improve the anti-mildew effect of the cable.

[0024] Please refer to Figure 1 and Figure 2 , there are seven wire cores 2. The wire core 2 is composed of a conductor 4, an inner shielding layer 5, and an insulating sheath 6. The conductor 4 is formed by stranding a number of copper wires. An inner shielding layer 5 is provided outside the conductor 4, and an insulating sheath 6 is provided outside the inner shielding layer 5, which can make the conductor 4 have higher strength, so as to avoid the situation of the conductor 4 breaking. The set inner shielding layer 5 enables the wire core 2 to have a good shielding effect and avoid mutual interference between wire cores 2 during use. The set insulating sheath 6 can prevent conduction between wire cores 2, thus affecting the use effect of the cable.

[0025] Please refer to Figure 2 , the filling layer 3 is made of fiberglass filaments. The set fiberglass filaments enable the filling layer 3 to have a good flame retardant effect. At the same time, fiberglass filaments have high tensile resistance, so as to improve the tensile resistance effect of the cable.

[0026] Please refer to Figure 2 , the wrapping layer 7 is formed by wrapping mica tape, the armor layer 8 is formed by winding steel strips, and the insulating layer 9 is made of polyethylene. The wrapping layer 7 formed by wrapping mica tape can improve the high temperature resistance performance of the cable and enhance the mechanical strength of the cable at the same time. The set armor layer 8 can further improve the protection performance of the cable.

[0027] Please refer to Figure 2 and Figure 3 , the flame retardant layer 10 is composed of a polyethylene flame retardant sleeve 1001 and a flame retardant powder 1002. Concave holes 1003 are provided outside the polyethylene flame retardant sleeve 1001. There are a number of concave holes 1003, and a number of concave holes 1003 are evenly distributed outside the polyethylene flame retardant sleeve 1001. The flame retardant powder 1002 is attached and formed by a spraying process. By spraying the flame retardant powder 1002, the polyethylene flame retardant sleeve 1001 can have better flame retardant performance, making the flame retardant effect of the flame retardant layer 10 better, so that the flame retardancy of the cable is better.

[0028] Please refer to Figure 2 , the inner shielding layer 5 is formed by cross-weaving aluminum wires, the insulating sheath 6 is made of polyvinyl chloride, and the outer shielding layer 11 is formed by winding aluminum foil. The inner shielding layer 5 formed by cross-weaving aluminum wires can improve the shielding effect between wire cores 2, and the outer shielding layer 11 formed by winding aluminum foil can improve the overall shielding effect of the cable and avoid being easily affected during cable use.

[0029] Please refer to Figure 2 and Figure 4 The mold-proof layer 12 is composed of a protective sleeve 1201 and a mold-proof and antibacterial spray 1202. The outside of the protective sleeve 1201 is sprayed with the mold-proof and antibacterial spray 1202 through a spraying process. The mold-proof and antibacterial spray 1202 sprayed through the spraying process can further improve the anti-corrosion effect of the protective sleeve 1201, so that the cable has a better anti-corrosion effect.

[0030] Working principle: During use, the glass fiber filling layer 3 provided can make the filling layer 3 have a good flame retardant effect. At the same time, the glass fiber can improve the anti-tensile effect of the cable, so as to improve the mechanical strength of the cable and make the cable not easily damaged due to stretching. The flame retardant layer 10 provided can make the cable have a better flame retardant effect and make the cable safer to use. The mold-proof layer 12 provided can improve the mold-proof effect of the cable, making the cable not easily breed mold and avoiding the cable being corroded by mold, thus affecting the use effect of the cable and reducing the service life of the cable, resulting in low practicality of the cable.

[0031] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A mold-proof and flame-retardant polyethylene power cable, comprising a cable core (1), characterized in that: The cable core (1) is composed of a plurality of wire cores (2) and a filling layer (3). An overwrap layer (7) is provided outside the cable core (1). An armor layer (8) is provided outside the overwrap layer (7). An insulating layer (9) is provided outside the armor layer (8). A flame retardant layer (10) is provided outside the insulating layer (9). An outer shielding layer (11) is provided outside the flame retardant layer (10). A mildew-proof layer (12) is provided outside the outer shielding layer (11). An outer sheath (13) is provided outside the mildew-proof layer (12).

2. A flame-retardant polyethylene power cable with mildew prevention according to claim 1, characterized in that: Seven wire cores (2) are provided. The wire core (2) is composed of a conductor (4), an inner shielding layer (5), and an insulating sheath (6). The conductor (4) is formed by stranding a plurality of copper wires. An inner shielding layer (5) is provided outside the conductor (4). An insulating sheath (6) is provided outside the inner shielding layer (5).

3. The flame-retardant polyethylene power cable with mold prevention according to claim 2, characterized in that: The filling layer (3) is made of glass fiber filaments.

4. A flame-retardant polyethylene power cable with mildew prevention according to claim 3, characterized in that: The overwrap layer (7) is formed by winding mica tape. The armor layer (8) is formed by winding a steel strip. The insulating layer (9) is made of polyethylene.

5. A flame-retardant polyethylene power cable with mildew prevention according to claim 4, characterized in that: The flame retardant layer (10) is composed of a polyethylene flame retardant sleeve (1001) and flame retardant powder (1002). A concave hole (1003) is provided outside the polyethylene flame retardant sleeve (1001). A plurality of the concave holes (1003) are provided, and the plurality of concave holes (1003) are evenly distributed outside the polyethylene flame retardant sleeve (1001). The flame retardant powder (1002) is formed by adhering through a spraying process.

6. A mold-proof and flame-retardant polyethylene power cable according to claim 5, characterized in that: The inner shielding layer (5) is formed by cross-weaving aluminum wires. The insulating sheath (6) is made of polyvinyl chloride. The outer shielding layer (11) is formed by winding an aluminum foil.

7. A flame-retardant polyethylene power cable with mildew prevention according to claim 6, characterized in that: The mildew-proof layer (12) is composed of a protective sleeve (1201) and a mildew-proof and antibacterial spray (1202). The mildew-proof and antibacterial spray (1202) is sprayed outside the protective sleeve (1201) through a spraying process.

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