Outdoor monitoring cable

Abstract

The utility model discloses a cable for outdoor monitoring, which belongs to the technical field of cables and comprises a central column, a plurality of spiral winding sleeves are fixedly connected to the circumferential surface of the central column and are uniformly distributed around the central axis of the central column, outer sheaths are fixedly connected in the spiral winding sleeves, insulating layers are arranged in the outer sheaths, and the outer sheaths are uniformly distributed around the central axis of the central column. Conductor wire cores are arranged in the plurality of insulating layers; the plurality of spiral winding sleeves are arranged to be spiral to protect the plurality of outer sheaths, and the plurality of spiral winding sleeves have certain elasticity, can resist certain external mechanical force, effectively protect the plurality of inner outer sheaths and the plurality of conductor wire cores, prevent the cable from being damaged by external force, and can be used for protecting the cable from being damaged by external force. And the plurality of outer sheaths are spirally wound inside by the plurality of spiral winding sleeves, so that direct sunlight and rainwater erosion can be avoided, aging damage caused by external environment influence is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, and more specifically, to a cable for outdoor monitoring. Background Art

[0002] A cable is a device for transmitting electric energy or signals. It usually consists of several or several groups of wires and has the characteristics of internal power conduction and external insulation. It is used to connect circuits and electrical appliances. Cables can be used to transmit electrical (magnetic) energy and information and achieve the conversion of electromagnetic energy. They are widely used in fields such as urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. There are many types of cables, including power cables, control cables, compensating cables, shielded cables, high-temperature cables, etc.

[0003] Currently, with the popularization of monitoring, more and more areas install monitors outdoors. Outdoor monitoring usually transmits electric energy and signals through cables. However, most of the existing cables used for outdoor monitoring are usually exposed to the external environment, often exposed to sunlight and rain erosion, which easily causes aging and damage and has a low service life. Summary of the Utility Model

[0004] 1. Technical Problems to be Solved

[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a cable for outdoor monitoring, aiming to solve the problem that most of the existing cables used for outdoor monitoring are usually exposed to the external environment, often exposed to sunlight and rain erosion, which easily causes aging and damage and has a low service life.

[0006] 2. Technical Solutions

[0007] To solve the above problems, the utility model adopts the following technical solutions:

[0008] A cable for outdoor monitoring includes a central column. A plurality of spiral sleeves are fixedly connected to the circumferential surface of the central column, and the plurality of spiral sleeves are evenly distributed around the central axis of the central column. Outer sheaths are fixedly connected inside the plurality of spiral sleeves, insulating layers are arranged inside the plurality of outer sheaths, and conductor cores are arranged inside the plurality of insulating layers.

[0009] As a preferred solution of the utility model, drainage hole groups are formed on the plurality of spiral sleeves, and the plurality of drainage hole groups are arranged at intervals along the axial direction of the spiral sleeves.

[0010] As a preferred solution of the utility model, inner semi-conductive shielding layers are arranged between the plurality of insulating layers and the plurality of conductor cores respectively.

[0011] As a preferred embodiment of the present utility model, an outer semi-conductive shielding layer and a metal shielding layer are sequentially arranged between each of the plurality of insulating layers and each of the plurality of outer sheaths from inside to outside.

[0012] As a preferred embodiment of the present utility model, an armor layer is arranged between each of the plurality of metal shielding layers and each of the plurality of outer sheaths.

[0013] 3. Advantageous effects

[0014] Compared with the prior art, the advantages of the present utility model are as follows:

[0015] (1) In this solution, a plurality of spiral sleeves are arranged around the central column, and each of the plurality of outer sheaths is wrapped inside, improving the heat dissipation effect of the cable. The plurality of spiral sleeves are arranged in a spiral shape to protect each of the plurality of outer sheaths. The plurality of spiral sleeves in a spiral shape have a certain elasticity and can resist a certain amount of external mechanical force, effectively protecting the plurality of outer sheaths and the plurality of conductor cores inside, preventing the cable from being damaged by external forces. Moreover, the plurality of spiral sleeves wind each of the plurality of outer sheaths spirally inside, which can avoid direct sunlight and rain erosion, reduce aging and damage caused by the influence of the external environment, and improve the service life. Description of the drawings

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Explanation of the reference numerals in the figure:

[0018] 1. Central column; 2. Spiral sleeve; 3. Outer sheath; 4. Insulating layer; 5. Conductor core; 6. Drainage hole group; 7. Inner semi-conductive shielding layer; 8. Outer semi-conductive shielding layer; 9. Metal shielding layer; 10. Armor layer. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] Embodiment:

[0023] Please refer to Figure 1 , a cable for outdoor monitoring, including a central column 1. A plurality of spiral sleeves 2 are fixedly connected to the circumferential surface of the central column 1, and the plurality of spiral sleeves 2 are evenly distributed around the central axis of the central column 1. An outer sheath 3 is fixedly connected inside each of the plurality of spiral sleeves 2, an insulating layer 4 is provided inside each of the plurality of outer sheaths 3, and a conductor core 5 is provided inside each of the plurality of insulating layers 4.

[0024] In this embodiment, the central column 1 is connected to the plurality of spiral sleeves 2, and the plurality of spiral sleeves 2 respectively protect the plurality of outer sheaths 3 and the plurality of conductor cores 5, enabling the cable to stably transmit signals and electric energy for outdoor monitoring. The insulating layer 4 ensures that the current, electromagnetic wave, and light wave transmitted by the conductor core only propagate along the conductor core 5 and do not flow to the outside, guaranteeing the stability of signal and electric energy transmission.

[0025] Specifically, a drainage hole group 6 is formed on each of the plurality of spiral sleeves 2, and the plurality of drainage hole groups 6 are arranged at intervals along the axial direction of the spiral sleeve 2.

[0026] In this embodiment, when water enters the spiral sleeve 2, the water can be quickly discharged through the drainage hole group 6. At the same time, it is convenient for the cable to dissipate heat.

[0027] Specifically, an inner semi-conductive shielding layer 7 is provided between each of the plurality of insulating layers 4 and each of the plurality of conductor cores 5.

[0028] In this embodiment, the conductor core 5 is formed by stranding multiple conducting wires. An air gap is likely to be formed between the conductor core 5 and the insulating layer 4. The surface of the conductor core 5 is not smooth, which will cause electric field concentration. A layer of inner semi-conductive shielding layer 7 is added to the surface of the conductor core 5. The inner semi-conductive shielding layer 7 is at the same potential as the shielded conductor core 5 and is in good contact with the insulating layer 4, thereby avoiding partial discharge between the conductor core 5 and the insulating layer 4.

[0029] Specifically, an outer semi-conductive shielding layer 8 and a metal shielding layer 9 are sequentially arranged between multiple insulating layers 4 and multiple outer sheaths 3 from inside to outside.

[0030] In this embodiment, a layer of outer semi-conductive shielding layer 8 is added to the surface of the insulating layer 4. The outer semi-conductive shielding layer 8 is in good contact with the shielded insulating layer 4 and is at the same potential as the metal shielding layer 9, thereby avoiding partial discharge between the insulating layer 4 and the metal shielding layer 9. The metal shielding layer 9 mainly shields the electromagnetic field, so that the inside of the cable is not affected by external electromagnetic interference, and the internal electromagnetic energy does not easily leak outside.

[0031] Specifically, an armor layer 10 is arranged between multiple metal shielding layers 9 and multiple outer sheaths 3 respectively.

[0032] In this embodiment, the armor layer 10 is a cladding layer composed of metal tapes and metal wires, which reduces the external mechanical force and protects the cable.

[0033] Working principle: The outdoor monitoring is powered and signaled through multiple conductor cores 5. An inner semi-conductive shielding layer 7, an insulating layer 4, an outer semi-conductive shielding layer 8, a metal shielding layer 9, an armor layer 10 and an outer sheath 3 are sequentially arranged on the outer surface of each conductor core 5. The inner semi-conductive shielding layer 7, the insulating layer 4, the outer semi-conductive shielding layer 8, the metal shielding layer 9, the armor layer 10 and the outer sheath 3 all protect the conductor core 5, enabling the conductor core 5 to stably transmit electric energy and signals for outdoor monitoring. The multiple spiral sleeves 2 divide the cable into multiple strands, respectively protecting the cable.

[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An outdoor monitoring cable, comprising a central column (1), characterized in that: A plurality of spiral winding sleeves (2) are fixedly connected to the circumferential surface of the central column (1), and the plurality of spiral winding sleeves (2) are evenly distributed around the central axis of the central column (1). An outer sheath (3) is fixedly connected in each of the plurality of spiral winding sleeves (2), an insulating layer (4) is arranged in each of the plurality of outer sheaths (3), and a conductor core (5) is arranged in each of the plurality of insulating layers (4).

2. The cable for outdoor monitoring according to claim 1, characterized in that: A drainage hole group (6) is formed in each of the plurality of spiral winding sleeves (2), and the plurality of drainage hole groups (6) are arranged at intervals along the axial direction of the spiral winding sleeve (2).

3. The cable for outdoor monitoring according to claim 2, wherein: An inner semi-conductive shielding layer (7) is arranged between each of the plurality of insulating layers (4) and each of the plurality of conductor cores (5).

4. The cable for outdoor monitoring according to claim 3, characterized in that: An outer semi-conductive shielding layer (8) and a metal shielding layer (9) are sequentially arranged between each of the plurality of insulating layers (4) and each of the plurality of outer sheaths (3) from inside to outside.

5. The cable for outdoor monitoring according to claim 4, characterized in that: An armor layer (10) is arranged between each of the plurality of metal shielding layers (9) and each of the plurality of outer sheaths (3).

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