Crosslinked cable for smart power grid

Abstract

The utility model relates to a cross-linked cable for an intelligent power grid, which comprises a plurality of conductors and a cross-shaped rubber partition plate, the end part of the rubber partition plate is coated with a fireproof wrapping layer, the outer side of each conductor is coated with a first shielding layer, the outer side of the first shielding layer is coated with an insulating layer, the outer side of the insulating layer is coated with a second shielding layer, and the outer side of the second shielding layer is coated with a waterproof layer. The waterproof layer is tightly attached to the included angle of the rubber partition plate, a half-wrapped sealing sleeve is arranged between the two adjacent side edges of the rubber partition plate, the gap between the sealing sleeve and the waterproof layer is filled with magnetic filler, the gap between the sealing sleeve and the fireproof wrapping layer is filled with flame-retardant filler, and the fireproof wrapping layer is wrapped with a third shielding layer. The third shielding layer is coated with an inner sheath, the inner sheath is coated with a metal foil layer, the metal foil layer is coated with a metal woven mesh, and the metal woven mesh is coated with an outer sheath. The cable is strong in anti-electromagnetic interference capability, and can avoid negative effects on power transmission efficiency and communication quality.

Description

TECHNICAL FIELD

[0001] The utility model relates to the cable field especially relates to a cross -linked cable for smart grid. BACKGROUND

[0002] The smart grid refers to the modernized electric power network that utilizes advanced sensing technology, information technology and control technology to carry out real-time monitoring and optimal scheduling to each link of power generation, power transmission, power transformation, power distribution, power utilization and the like. The cross -linked cable is an important power transmission medium in the smart grid, and its full name is cross -linked polyethylene XLPE, Cross-LinkedPolyethylene insulated cable. When the smart grid lays the cable, the problem of complex cable and electromagnetic interference phenomenon will be faced. The electromagnetic interference can come from other electrical equipment in the external environment or the cable itself in the system, and these interferences can cause negative effects on power transmission efficiency and communication quality. Therefore, it is necessary to study the cross -linked cable with high electromagnetic shielding performance. SUMMARY

[0003] The utility model aims at solving the prior art's insufficient, and provides a cross -linked cable for smart grid.

[0004] The utility model discloses a cross -linked cable for smart grid, including a plurality of conductors, still including the rubber baffle of cross -shaped, and the rubber baffle end is covered with fire -retardant wrapping layer, and the outer side of conductor is covered with first shielding layer, and the outer side of first shielding layer is covered with insulating layer, and the outer side of insulating layer is covered with second shielding layer, and the outer side of second shielding layer is covered with waterproof layer, and waterproof layer is closely attached rubber baffle included angle setting, and the half -package closed sleeve that is equipped with between the adjacent two sides of rubber baffle, and the gap between closed sleeve and waterproof layer is filled with magnetic filler, and the gap between closed sleeve and fire -retardant wrapping layer is filled with flame -retardant filler, and the outer side of fire -retardant wrapping layer is covered with third shielding layer, and the outer side of third shielding layer is covered with inner sheath, and the outer side of inner sheath is covered with metal foil layer, and the outer side of metal foil layer is covered with metal braid, and the outer side of metal braid is covered with outer sheath.

[0005] Particularly, the outer sheath is coated with a magnetic coating on the outside.

[0006] Particularly, the rubber baffle is provided with a gap inside the side edge.

[0007] Particularly, the rubber baffle is provided with a center rope at the center.

[0008] The utility model discloses an advantageous effect is: the utility model discloses through setting up first shielding layer, second shielding layer, third shielding layer, magnetic filler, metal foil layer, metal weaving outside, magnetic coating, make cable anti - electromagnetic interference ability is strong, can avoid to the electric power transmission efficiency and communication quality cause negative influence, through setting up rubber baffle, can effectively keep the fixed spacing between each conductor, prevents the mutual extrusion of conductor because of external pressure or bending to reduce the risk of mechanical damage, still can reduce the electromagnetic coupling between them, reduce the interference between phases, improve the quality of signal transmission. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is structural schematic diagram of the utility model;

[0010] In the drawing: 1 - conductor;2 - rubber baffle;3 - fire -resistant wrapping layer;4 - first shielding layer;5 - insulating layer;6 - second shielding layer;7 - waterproof layer;8 - closed sleeve;9 - magnetic filler;10 - flame -retardant filler;11 - third shielding layer;12 - inner sheath;13 - metal foil layer;14 - metal woven net;15 - outer sheath;16 - gap;17 - center rope;

[0011] The following will combine the embodiment of the utility model and carry out detailed description with reference to the drawings. DETAILED DESCRIPTION

[0012] The utility model will be further explained in connection with the drawings and examples:

[0013] As Figure 1 Shown, a kind of intelligent power grid is crossed cable, including several conductors 1, still including cross-shaped rubber baffle 2, rubber baffle 2 end is covered with fire -resistant wrapping layer 3, conductor 1 outer side is covered with first shielding layer 4, first shielding layer 4 outer side is covered with insulating layer 5, insulating layer 5 outer side is covered with second shielding layer 6, second shielding layer 6 outer side is covered with waterproof layer 7, waterproof layer 7 is tightly attached rubber baffle 2 and is arranged at angle, rubber baffle 2 center is equipped with center rope 17, the inside of the side of rubber baffle 2 is equipped with gap 16;

[0014] The setting of first shielding layer 4 and second shielding layer 6 can provide wider frequency band electromagnetic interference protection, double shielding helps to reduce the electromagnetic coupling between the conductors inside cable, reduce the crosstalk between signal lines, insulating layer 5 is located between two layers of shielding, can effectively isolate conductor and outside, prevent short circuit and electric leakage phenomenon, improve the electrical safety and reliability of cable, waterproof layer 7 can effectively prevent moisture penetration into cable interior, protect cable from humid environment;

[0015] The rubber partition plate 2 can effectively maintain the fixed spacing between the conductors 1, prevent the conductors 1 from being pressed by each other due to external pressure or bending, thereby reducing the risk of mechanical damage; the rubber partition plate 2 can effectively separate the conductors 1 and reduce the electromagnetic coupling therebetween, thereby reducing the inter-phase interference and improving the quality of signal transmission; the rubber partition plate 2 itself has good insulation performance, which can further improve the electrical safety of the cable and prevent short circuit and leakage; the center cord 17 can provide additional mechanical support and increase the overall strength and tensile resistance of the cable; the side edges of the rubber partition plate 2 are internally provided with the gaps 16, which can form certain air channels inside the cable, help air circulation and improve the heat dissipation effect, and the gaps 16 can help heat transfer from the conductors 1 to the external environment and reduce local overheating.

[0016] The half-enclosed closed sleeve 8 is arranged between the two adjacent side edges of the rubber partition plate 2, the gap between the closed sleeve 8 and the waterproof layer 7 is filled with the magnetic filler 9, the gap between the closed sleeve 8 and the fireproof wrapping layer 3 is filled with the flame-retardant filler 10, the magnetic filler 9 has the ability to absorb electromagnetic waves and can convert external electromagnetic interference into heat energy, thereby reducing the influence on the internal conductors 1, and the third shielding layer 11 is arranged outside the fireproof wrapping layer 3.

[0017] The inner sheath 12 is arranged outside the third shielding layer 11, the metal foil layer 13 is arranged outside the inner sheath 12, the metal woven mesh 14 is arranged outside the metal foil layer 13, the outer sheath 15 is arranged outside the metal woven mesh 14, and the magnetic coating (such as a ferrite-based coating or a nano-magnetic particle coating) is coated outside the outer sheath 15, which plays a role in absorbing electromagnetic waves; the metal foil layer 13 (such as aluminum foil and copper foil) has good shielding effect on low-frequency interference, and the metal woven mesh 14 (formed by copper wire or stainless steel wire) is effective on high-frequency interference, and the combination of the two provides comprehensive electromagnetic shielding from low frequency to high frequency, enhances the anti-electromagnetic interference ability of the cable, reduces the influence of the external electromagnetic field on the internal conductors 1 of the cable, and also reduces the interference of the cable on external equipment; the metal woven mesh 14 also increases the mechanical strength and flexibility of the cable, so that it can better resist mechanical stress such as stretching, bending and extrusion.

[0018] The cable has strong anti-electromagnetic interference ability and can avoid negative influence on power transmission efficiency and communication quality.

[0019] In the description of the utility model, it is understood that the orientation or positional relationship indicated by 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" and the like is the orientation or positional relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0020] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0021] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected or can communicate with each other; can be directly connected, or can be indirectly connected through an intermediate medium, can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] The utility model has been described above in conjunction with the drawings, and obviously the specific implementation of the utility model is not limited by the above mode, as long as various improvements are made by adopting the method concept and technical scheme of the utility model, or directly applied to other occasions without improvement, which is within the protection scope of the utility model.

Claims

1. A cross-linked cable for smart grids comprising a number of conductors (1), characterized in that, The cross-shaped rubber partition (2) is covered with a fireproof wrapping layer (3) at the end, the conductor (1) is covered with a first shielding layer (4) outside, the first shielding layer (4) is covered with an insulation layer (5) outside, the insulation layer (5) is covered with a second shielding layer (6) outside, the second shielding layer (6) is covered with a waterproof layer (7) outside, the waterproof layer (7) is closely arranged at the angle of the rubber partition (2), a semi-enclosed closed sleeve (8) is arranged between the adjacent two side edges of the rubber partition (2), the gap between the closed sleeve (8) and the waterproof layer (7) is filled with a magnetic filler (9), the gap between the closed sleeve (8) and the fireproof wrapping layer (3) is filled with a flame-retardant filler (10), the fireproof wrapping layer (3) is covered with a third shielding layer (11) outside, the third shielding layer (11) is covered with an inner sheath (12) outside, the inner sheath (12) is covered with a metal foil layer (13) outside, the metal foil layer (13) is covered with a metal woven mesh (14) outside, and the metal woven mesh (14) is covered with an outer sheath (15) outside.

2. The cross-linked cable for smart grid according to claim 1, characterized by, The outer sheath (15) is coated with a magnetic coating outside.

3. The cross-linked cable for smart grid according to claim 1, characterized in that, The side edge of the rubber partition (2) is internally provided with a clamping gap (16).

4. The cross-linked cable for smart grid according to claim 1, wherein, The rubber partition (2) is provided with a center rope (17) at the center.

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