Intelligent early warning cable

Abstract

The utility model discloses an intelligent early warning cable, which belongs to the field of cables and comprises a conductor assembly. The conductor shielding layer, the insulating layer and the non-metal semi-conductive layer are sequentially sleeved outside the conductor assembly; the metal shielding layer and the metal tube are sleeved outside the non-metal semi-conductive layer; the temperature measuring optical fiber is sleeved in the metal tube; the waterproof layer and the outer sheath are sequentially sleeved outside the metal shielding layer and the metal tube; wherein the minimum bending radius of the temperature measuring optical fiber is smaller than the minimum bending radius of the intelligent early warning cable. The number of the metal tubes is two, and the two metal tubes are arranged in an axial symmetry mode relative to the conductor assembly. The metal shielding layer comprises a plurality of copper wires which are sleeved outside the nonmetal semi-conductive layer, and the copper wires and the metal pipes are arranged adjacently. The distance between the adjacent copper wires is equal to the distance between the copper wires and the metal pipe. The technical effects of the utility model lie in that the temperature measuring optical fiber is not easy to break, and the water-blocking performance is good.

Description

Technical Field

[0001] This utility model relates to cables, and more particularly to an intelligent early warning cable. Background Technology

[0002] A cable is a type of wire or cable made of one or more conductors and an outer insulating protective layer, and is widely used in fields such as electrified railway traction power supply systems.

[0003] To enhance intelligent early warning capabilities, temperature-sensing optical fibers are typically installed in the cables. However, these fibers are prone to breakage as the cables bend. Additionally, the cables have poor water resistance, which can easily lead to internal damage. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to provide an intelligent early warning cable, whose temperature measuring optical fiber is not easily broken, and at the same time, it has good water resistance.

[0005] Technical solution:

[0006] A smart early warning cable, comprising:

[0007] Conductor components;

[0008] A conductor shielding layer, an insulating layer, and a non-metallic semiconducting layer are sequentially fitted onto the outside of the conductor assembly;

[0009] A metal shielding layer and a metal tube are sleeved outside the non-metallic semiconductive layer;

[0010] Temperature-measuring optical fiber sleeved inside the metal tube;

[0011] A water-blocking layer and an outer sheath are sequentially fitted over the metal shielding layer and the metal pipe;

[0012] The minimum bending radius of the temperature-measuring optical fiber is smaller than that of the intelligent early warning cable.

[0013] Optionally, the number of metal tubes is two, and the two metal tubes are arranged symmetrically about the conductor assembly.

[0014] Optionally, the metal shielding layer includes a plurality of copper wires all sleeved around the non-metallic semiconductive layer, and the copper wires and the metal tube are arranged adjacent to each other.

[0015] Optionally, the distance between adjacent copper wires is equal to the distance between the copper wire and the metal tube.

[0016] Optionally, the outer sheath is made of rodent- and ant-proof B1 grade thermoplastic halogen-free low-smoke flame-retardant polyolefin sheath material, and also includes a nylon sheath fitted over the outer sheath.

[0017] Optionally, the outer sheath is made of UV-resistant, rodent-resistant, B2-grade low-halogen, low-smoke, flame-retardant polyvinyl chloride sheath material, and also includes a nylon sheath fitted over the outer sheath.

[0018] Optionally, it also includes a copper strip reverse binding layer and a halogen-free low-smoke flame-retardant glass fiber tape sequentially sleeved around the metal shielding layer and the metal tube, wherein the halogen-free low-smoke flame-retardant glass fiber tape is sleeved inside the water-blocking layer.

[0019] Optionally, it also includes an isolation sleeve, a second halogen-free low-smoke flame-retardant glass fiber tape, an armor layer, and a third halogen-free low-smoke flame-retardant glass fiber tape, which are sequentially fitted outside the water-blocking layer, with the third halogen-free low-smoke flame-retardant glass fiber tape fitted inside the outer sheath.

[0020] Beneficial effects:

[0021] (1) The rodent-proof B1 grade thermoplastic halogen-free low-smoke flame-retardant polyolefin sheath material makes the outer sheath have good rodent-proof and flame-retardant properties.

[0022] (2) UV-resistant, rodent-proof, and flame-retardant B2 grade low-halogen, low-smoke, flame-retardant polyvinyl chloride sheath material makes the outer sheath have good UV protection, rodent-proof, and flame-retardant properties.

[0023] (3) The temperature measuring fiber is used for temperature measurement, which facilitates the intelligent early warning of the intelligent early warning cable in this scheme. The temperature measuring fiber can be a single-mode fiber or a multi-mode fiber, preferably a multi-mode fiber.

[0024] (4) The metal tube is used to house the temperature measuring fiber, which is convenient for protecting the temperature measuring fiber and preventing the temperature measuring fiber from interfering with the metal shielding layer.

[0025] (5) The water-blocking layer is used to block water and prevent damage to the internal structure of the intelligent early warning cable of this scheme. The water-blocking layer is preferably a longitudinally wrapped aluminum-plastic composite tape. Attached Figure Description

[0026] Figure 1 This is one of the structural schematic diagrams of an intelligent early warning cable according to Embodiment 1 of this utility model;

[0027] Figure 2 This is a second structural schematic diagram of an intelligent early warning cable according to Embodiment 1 of this utility model;

[0028] In the diagram: 1. Conductor assembly; 2. Conductor shielding layer; 3. Insulation layer; 4. Non-metallic semiconducting layer; 5. Metallic shielding layer; 51. Copper wire; 61. Metal tube; 62. Temperature measuring optical fiber; 7. Water-blocking layer; 8. Outer sheath; 9. Nylon sheath; 10. Copper tape reverse binding layer; 11. Halogen-free low-smoke flame-retardant fiberglass tape one; 12. Isolation sleeve; 13. Halogen-free low-smoke flame-retardant fiberglass tape two; 14. Armoring layer; 15. Halogen-free low-smoke flame-retardant fiberglass tape three. Detailed Implementation

[0029] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the utility model. Furthermore, it should be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. The terms "first," "second," etc., used in this utility model are provided for the convenience of describing the technical solution of this utility model and have no specific limiting effect; they are all general terms and do not constitute a limitation on the technical solution of this utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not 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 on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not contradict or conflict, all of which are within the scope of protection claimed by this utility model.

[0031] Example 1

[0032] like Figure 1This embodiment provides an intelligent early warning cable, comprising: a conductor assembly 1; a conductor shielding layer 2, an insulation layer 3, and a non-metallic semi-conductive layer 4 sequentially sleeved outside the conductor assembly 1; a metal shielding layer 5 and a metal tube 61 sleeved outside the non-metallic semi-conductive layer 4; a temperature-sensing optical fiber 62 sleeved inside the metal tube 61; and a water-blocking layer 7 and an outer sheath 8 sequentially sleeved outside the metal shielding layer 5 and the metal tube 61; wherein the minimum bending radius of the temperature-sensing optical fiber 62 is smaller than the minimum bending radius of the intelligent early warning cable.

[0033] Specifically, conductor assembly 1 is used to transmit electrical energy, and is made of multiple strands of round copper wire twisted and compressed into conductor assembly 1 or shaped wire conductor assembly 1; conductor shielding layer 2 is used for conductor shielding, and the material of conductor shielding layer 2 is preferably a semi-conductive material; insulation layer 3 is used for insulation, and the material of insulation layer 3 is preferably cross-linked polyethylene; non-metallic semi-conductive layer 4 is used for insulation shielding; metal shielding layer 5 is used for conductive shielding; metal tube 61 is used to house temperature-sensing optical fiber 62, which facilitates the protection of temperature-sensing optical fiber 62 and prevents temperature-sensing optical fiber 62 from interfering with metal shielding layer 5; temperature-sensing optical fiber 62... 2 is used for temperature measurement to facilitate intelligent early warning of the intelligent early warning cable in this solution. The temperature measuring optical fiber 62 can be a single-mode optical fiber or a multi-mode optical fiber, preferably a multi-mode optical fiber. The water-blocking layer 7 is used to block water and prevent damage to the inside of the intelligent early warning cable in this solution. The water-blocking layer 7 is preferably a longitudinally wrapped aluminum-plastic composite tape. The outer sheath 8 is used to provide protection. Since the minimum bending radius of the temperature measuring optical fiber 62 is smaller than the minimum bending radius of the intelligent early warning cable, the temperature measuring optical fiber 62 has good plasticity. When the intelligent early warning cable in this solution is bent, the temperature measuring optical fiber 62 is not easy to break.

[0034] Furthermore, such as Figure 1 There are two metal tubes 61, which are arranged symmetrically about the conductor assembly 1. Specifically, the symmetrical arrangement helps to prevent the metal tubes 61 and the temperature-sensing optical fiber 62 from affecting the symmetry of the intelligent early warning cable of this scheme, thereby ensuring good stress symmetry of the intelligent early warning cable of this scheme.

[0035] Furthermore, such as Figure 1 The metal shielding layer 5 includes several copper wires 51, each sleeved around the non-metallic semi-conductive layer 4, with the copper wires 51 and the metal tube 61 arranged adjacent to each other. Specifically, the copper wires 51 facilitate good conductivity shielding of the metal shielding layer 5.

[0036] Furthermore, such as Figure 1 The distance between adjacent copper wires 51 is equal to the distance between copper wire 51 and metal tube 61. Specifically, the equal distance facilitates the uniform distribution of copper wires 51 and metal tube 61, thereby ensuring good structural uniformity of the intelligent early warning cable in this solution.

[0037] Furthermore, such as Figures 1-2The outer sheath 8 is made of rodent-proof B1 grade thermoplastic halogen-free low-smoke flame-retardant polyolefin sheath material, and also includes a nylon sheath 9 fitted over the outer sheath 8. Specifically, the rodent-proof B1 grade thermoplastic halogen-free low-smoke flame-retardant polyolefin sheath material facilitates good rodent-proof and flame-retardant performance of the outer sheath 8; the nylon sheath 9 further facilitates good rodent-proof performance, and the material of the nylon sheath 9 is preferably polyamide 12.

[0038] Furthermore, such as Figures 1-2 The outer sheath 8 is made of UV-resistant, rodent-resistant, B2-grade low-halogen, low-smoke, flame-retardant polyvinyl chloride (PVC) sheath material, and also includes a nylon sheath 9 fitted over the outer sheath 8. Specifically, the UV-resistant, rodent-resistant, B2-grade low-halogen, low-smoke, flame-retardant PVC sheath material ensures that the outer sheath 8 has good UV protection, rodent-resistant, and flame-retardant properties; the nylon sheath 9 further enhances rodent-resistant properties, and the preferred material for the nylon sheath 9 is polyamide 12.

[0039] Furthermore, such as Figure 1 It also includes a copper strip reverse binding layer 10 and a halogen-free, low-smoke, flame-retardant glass fiber tape 11, which are sequentially sleeved around the metal shielding layer 5 and the metal tube 61. The halogen-free, low-smoke, flame-retardant glass fiber tape 11 is sleeved inside the water-blocking layer 7. Specifically, the copper strip reverse binding layer 10 is used for electromagnetic shielding and provides mechanical protection; the halogen-free, low-smoke, flame-retardant glass fiber tape 11 facilitates the enhancement of flame-retardant and environmental performance.

[0040] Furthermore, such as Figure 1 It also includes an isolation sleeve 12, a halogen-free low-smoke flame-retardant glass fiber tape 13, an armor layer 14, and a halogen-free low-smoke flame-retardant glass fiber tape 15, which are sequentially fitted outside the water-blocking layer 7 and fitted inside the outer sheath 8.

[0041] Specifically, the isolation sleeve 12 is used for isolation, and the material of the isolation sleeve 12 is preferably flame-retardant polyethylene; the second halogen-free low-smoke flame-retardant glass fiber tape 13 facilitates further enhancement of flame-retardant and environmental performance; the armor layer 14 is used to provide mechanical protection and increase tensile strength, and the material of the armor layer 14 is preferably non-ferromagnetic material; the third halogen-free low-smoke flame-retardant glass fiber tape 15 facilitates further enhancement of flame-retardant and environmental performance.

[0042] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A smart early warning cable, characterized in that, include: Conductor assembly (1); The conductor shielding layer (2), the insulating layer (3), and the non-metallic semiconducting layer (4) are sequentially sleeved on the outside of the conductor assembly (1); A metal shielding layer (5) and a metal tube (61) are sleeved outside the non-metallic semiconductive layer (4); Temperature-measuring optical fiber (62) is sleeved inside the metal tube (61); A water-blocking layer (7) and an outer sheath (8) are sequentially fitted over the metal shielding layer (5) and the metal tube (61); The minimum bending radius of the temperature-measuring optical fiber (62) is smaller than that of the minimum bending radius of the intelligent early warning cable.

2. The intelligent early warning cable of claim 1, wherein, The number of metal tubes (61) is two, and the two metal tubes (61) are arranged symmetrically about the conductor assembly (1).

3. The intelligent early warning cable of claim 1 or 2, wherein, The metal shielding layer (5) includes a number of copper wires (51) all sleeved outside the non-metallic semiconducting layer (4), and the copper wires (51) and the metal tube (61) are arranged adjacent to each other.

4. The intelligent early warning cable of claim 3, wherein, The distance between adjacent copper wires (51) is equal to the distance between the copper wire (51) and the metal tube (61).

5. The intelligent early warning cable of claim 1 or 2, wherein, The outer sheath (8) is made of rodent-proof and ant-proof B1 grade thermoplastic halogen-free low-smoke flame-retardant polyolefin sheath material, and also includes a nylon sheath (9) sleeved on the outer sheath (8).

6. The intelligent early warning cable of claim 1 or 2, wherein, The outer sheath (8) is made of UV-resistant, rodent-resistant, B2-grade low-halogen, low-smoke, flame-retardant polyvinyl chloride sheath material, and also includes a nylon sheath (9) fitted over the outer sheath (8).

7. The intelligent early warning cable of claim 1 or 2, wherein, It also includes a copper strip reverse binding layer (10) and a halogen-free low-smoke flame-retardant glass fiber strip (11) that are sequentially sleeved on the outside of the metal shielding layer (5) and the metal tube (61), and the halogen-free low-smoke flame-retardant glass fiber strip (11) is sleeved inside the water-blocking layer (7).

8. The intelligent early warning cable of claim 1 or 2, wherein, It also includes an isolation sleeve (12), a second halogen-free low-smoke flame-retardant glass fiber tape (13), an armor layer (14), and a third halogen-free low-smoke flame-retardant glass fiber tape (15) that are sequentially fitted outside the water-blocking layer (7), with the third halogen-free low-smoke flame-retardant glass fiber tape (15) fitted inside the outer sheath (8).

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