Crosslinked polyethylene insulated control cable

Abstract

The utility model relates to a cross-linked polyethylene insulated control cable, which comprises a central rope and a plurality of conductors arranged around the circumference of the central rope, a conductor shielding layer is coated outside the conductors, a first isolation belt layer is coated outside the conductor shielding layer, a cross-linked polyethylene insulating layer is coated outside the first isolation belt layer, and a second isolation belt layer is coated outside the cross-linked polyethylene insulating layer. The outer side of the cross-linked polyethylene insulating layer is coated with a second isolation strip layer, the outer side of the second isolation strip layer is coated with an insulation shielding layer, the outer sides of the insulation shielding layers are coated with a waterproof belting layer, gaps among the waterproof belting layer, the insulation shielding layer and the center rope are filled with fillers, the outer side of the waterproof belting layer is coated with a metal shielding layer, and the outer side of the metal shielding layer is coated with a metal shielding layer. The outer side of the metal shielding layer is coated with an inner sheath, the outer side of the inner sheath is coated with a reinforcing layer, the outer side of the reinforcing layer is coated with an outer sheath, and the outer side of the outer sheath is provided with a wave structure. The cable is good in shielding effect, good in wear resistance and bending performance, good in using effect and long in service life, and the cross-linked polyethylene insulating layer is not easy to adhere to an adjacent material.

Description

Technical Field

[0001] This utility model relates to the field of cables, and in particular to a cross-linked polyethylene insulated control cable. Background Technology

[0002] Cross-linked polyethylene (XLPE) insulated control cables are widely used in electrical control systems. These cables typically consist of a conductor, XLPE insulation layer, filler, wrapping tape, and sheath, from the inside out. The XLPE insulation layer is a core component, made of XLPE material, and provides electrical isolation to the conductor. However, XLPE has poor heat resistance and adhesion; at high temperatures, the XLPE insulation layer may adhere to other materials, leading to handling difficulties or damage. Furthermore, the cable's electromagnetic interference resistance is generally poor, and the outer sheath's strength, abrasion resistance, and bending performance are also average, making it prone to wear and resulting in a short service life. Summary of the Invention

[0003] The present invention aims to address the shortcomings of the prior art by providing a cross-linked polyethylene insulated control cable.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a cross-linked polyethylene insulated control cable, comprising a center rope and several conductors arranged circumferentially around the center rope. The conductors are covered with a conductor shielding layer, the conductor shielding layer is covered with a first isolation strip layer, the first isolation strip layer is covered with a cross-linked polyethylene insulation layer, the cross-linked polyethylene insulation layer is covered with a second isolation strip layer, the second isolation layer is covered with an insulating shielding layer, several insulating shielding layers are covered with a waterproof wrapping tape layer, the gaps between the waterproof wrapping tape layer, the insulating shielding layer, and the center rope are filled with a filler, the waterproof wrapping tape layer is covered with a metal shielding layer, the metal shielding layer is covered with an inner sheath, the inner sheath is covered with a reinforcing layer, the reinforcing layer is covered with an outer sheath, and the outer sheath has a corrugated structure on its outer side.

[0005] Specifically, the filler is a flame-retardant filler.

[0006] Specifically, the reinforcing layer is a fiber braided layer.

[0007] In particular, the outer sheath is coated with a silicone resin coating layer.

[0008] The beneficial effects of this utility model are as follows: By setting a conductor shielding layer, an insulation shielding layer, and a metal shielding layer, this utility model provides multi-layer shielding, resulting in good anti-interference performance of the cable and preventing signal interference; by setting a first isolation strip layer and a second isolation strip layer, the cross-linked polyethylene insulation layer is easily separated, preventing adhesion to other materials under high temperature conditions; by setting a reinforcing layer, the cable can be provided with additional mechanical protection and reinforcement; by setting a corrugated structure, the bending performance, wear resistance, compressive strength, and drainage performance of the cable can be improved; the cable of this utility model has good performance and long service life. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the circular central cross-section of this utility model;

[0010] Figure 2 This is a schematic diagram of the rectangular central cross-section of this utility model;

[0011] In the diagram: 1-Center rope; 2-Conductor; 3-Conductor shielding layer; 4-First isolation strip layer; 5-Cross-linked polyethylene insulation layer; 6-Second isolation layer; 7-Insulating shielding layer; 8-Waterproof wrapping tape layer; 9-Filling material; 10-Metallic shielding layer; 11-Inner sheath; 12-Reinforcing layer; 13-Outer sheath; 14-Wave structure;

[0012] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0014] like Figures 1-2 As shown, a cross-linked polyethylene insulated control cable includes a central rope 1 and a plurality of conductors 2 arranged around the circumference of the central rope 1. The conductors 2 are covered with a conductor shielding layer 3, which helps to distribute the electric field evenly and reduce the risk of partial discharge.

[0015] The conductor shielding layer 3 is covered with a first isolation layer 4, the first isolation layer 4 is covered with a cross-linked polyethylene insulation layer 5, and the cross-linked polyethylene insulation layer 5 is covered with a second isolation layer 6. The first isolation layer 4 and the second isolation layer 6 separate the cross-linked polyethylene insulation layer 5 to prevent it from sticking to other materials under high temperature conditions.

[0016] The second isolation layer 6 is covered with an insulating shielding layer 7. The insulating shielding layer 7 can improve the electric field distribution and prevent external electromagnetic interference from affecting the internal signal.

[0017] Several insulating shielding layers 7 are covered with waterproof wrapping layers 8, which serve to shape and waterproof. The gaps between the waterproof wrapping layers 8, the insulating shielding layers 7, and the central rope 1 are filled with filler 9, which is a flame-retardant filler, serving to shape and retard.

[0018] The waterproof wrapping layer 8 is covered with a metal shielding layer 10, such as copper wire mesh or aluminum foil, to further reduce electromagnetic interference and improve safety.

[0019] The outer side of the metal shielding layer 10 is covered by an inner sheath 11, and the outer side of the inner sheath 11 is covered by a reinforcing layer 12. The reinforcing layer 12 is a fiber braided layer, such as a braided layer made of glass fiber, carbon fiber or aramid fiber. This braided layer can provide additional mechanical protection and reinforcement.

[0020] The outer sheath 13 is wrapped around the reinforcing layer 12. The outer sheath 13 is coated with a silicone resin coating layer. The silicone resin coating has excellent weather resistance and temperature resistance, can maintain good performance over a wide temperature range, and can resist the corrosion of ultraviolet rays and chemicals in the atmosphere, thus enhancing the cable's anti-aging performance.

[0021] The outer sheath 13 has a wave structure 14 on its outer side. The wave structure 14 makes the outer surface of the outer sheath 13 not smooth, but has a periodic concave-convex shape, which has the following advantages: improved bending performance, the wave structure 14 allows the cable to adapt more flexibly to different curvature radii when bending, because the waves can stretch and compress to a certain extent, thereby reducing stress concentration on the sheath material; increased abrasion resistance, the wave structure 14 can disperse external friction, reduce wear in a single area, and extend the service life of the cable; enhanced compressive strength, the wave structure 14 can absorb and disperse external pressure, providing better mechanical protection and preventing the outer sheath 13 from being squeezed, deformed or damaged; improved grip, the wave structure 14 provides a better grip, making it easier for installers to operate and lay cables, especially when manual handling of the cable is required; drainage performance, in outdoor applications, the wave structure 14 helps drainage, preventing moisture from accumulating on the cable surface, thereby reducing the risk of corrosion.

[0022] This invention has good shielding effect, good wear resistance and bending performance, and the cross-linked polyethylene insulation layer 5 is not easy to stick to the adjacent materials, resulting in good performance and long service life.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A cross-linked polyethylene insulated control cable, comprising a center rope (1) and a plurality of conductors (2) arranged circumferentially around the center rope (1), characterized in that, The conductor (2) is covered with a conductor shielding layer (3), the conductor shielding layer (3) is covered with a first isolation strip layer (4), the first isolation strip layer (4) is covered with a cross-linked polyethylene insulation layer (5), the cross-linked polyethylene insulation layer (5) is covered with a second isolation strip layer (6), the second isolation layer (6) is covered with an insulating shielding layer (7), several insulating shielding layers (7) are covered with a waterproof wrapping tape layer (8), the gap between the waterproof wrapping tape layer (8), the insulating shielding layer (7), and the central rope (1) is filled with filler (9), the waterproof wrapping tape layer (8) is covered with a metal shielding layer (10), the metal shielding layer (10) is covered with an inner sheath (11), the inner sheath (11) is covered with a reinforcing layer (12), the reinforcing layer (12) is covered with an outer sheath (13), and the outer sheath (13) is provided with a wave structure (14).

2. The cross-linked polyethylene insulated control cable according to claim 1, characterized in that, The filler (9) is a flame-retardant filler.

3. The cross-linked polyethylene insulated control cable according to claim 1, characterized in that, The reinforcing layer (12) is a fiber braided layer.

4. A cross-linked polyethylene insulated control cable according to claim 1, characterized in that, The outer sheath (13) is coated with a silicone resin coating layer on the outside.

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