Low-smoke halogen-free cable with good wiring stability

Abstract

The utility model relates to the technical field of cables, in particular to a low-smoke halogen-free cable with good wiring stability, which comprises a cable group of which the outer diameter is sleeved with a positioning sleeve group for wiring, and the cable group comprises a low-smoke halogen-free insulating layer, a glass fiber layer, a mica tape layer and an oxygen-free copper core layer, the glass fiber layer, the mica tape layer and the oxygen-free copper core layer are sequentially arranged in the low-smoke halogen-free insulating layer, the number of the positioning sleeve sets is at least one, and the positioning sleeve sets are arranged on the periphery of the low-smoke halogen-free insulating layer in a sleeving mode. The low-smoke halogen-free cable with good wiring stability is provided for electric power personnel through an assembly formed by the cable groups of the positioning sleeve group, the positioning sleeve group can be used for carrying out auxiliary positioning on the bending position of the cable and carrying out sleeving protection on the bending position of the cable, and the situation that fatigue cracking of an outer layer material of the cable is likely to happen due to the bending requirement of wiring of the cable is avoided; and environmental medium water vapor / chemical substances permeate along cracks to accelerate aging.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a low-smoke halogen-free cable with good wiring stability. Background Technology

[0002] Low-smoke halogen-free flame-retardant cables are modern environmentally friendly cables widely used in large industrial sites. Low-smoke halogen-free flame-retardant cables require the use of halogen-free conductive materials to ensure low-smoke stability at high temperatures.

[0003] Existing low-smoke halogen-free cables suffer from fatigue cracks in the outer layer due to stress concentration caused by bending requirements in certain scenarios during wiring, which affects the cable's service life. Additionally, the cables are prone to angular rebound due to elastic deformation after bending, which affects wiring accuracy. Therefore, a low-smoke halogen-free cable with good wiring stability is proposed. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides a low-smoke halogen-free cable with good wiring stability.

[0005] The technical solution adopted by this utility model to solve its technical problem is a low-smoke halogen-free cable with good wiring stability, including a cable group with a wiring positioning sleeve on the outer diameter. The cable group includes a low-smoke halogen-free insulation layer, a fiberglass layer, a mica tape layer and an oxygen-free copper core layer. The fiberglass layer, mica tape layer and oxygen-free copper core layer are sequentially arranged inside the low-smoke halogen-free insulation layer. At least one positioning sleeve is provided and the positioning sleeve is sleeved on the outer periphery of the low-smoke halogen-free insulation layer.

[0006] By adopting the above technical solution, the cable assembly composed of positioning sleeves can provide power personnel with a set of low-smoke halogen-free cables with good wiring stability. The positioning sleeves can be used to assist in positioning the cable bends and to protect the bends, thus preventing fatigue cracking of the cable's outer material due to wiring bends, which can lead to accelerated aging caused by the penetration of water vapor / chemical substances from the environment along the cracks.

[0007] Specifically, the positioning sleeve assembly includes a deformable sleeve assembly with end sleeves connected to both ends. One side of the end sleeve is provided with a protrusion, and a through hole is provided through the protrusion. The positioning sleeve assembly is provided with a strap, which is inserted into the through hole. Both ends of the strap are respectively provided with a hook and loop side and a loop side.

[0008] By adopting the above technical solution and using cable ties, it is easy for personnel to bind and fix the cables to the cable supports used in the site, thereby further improving the stability of cable wiring.

[0009] Specifically, the deformable sleeve assembly includes a nylon braided sleeve layer, the outer surface of which is coated with a polyolefin layer, and the inner wall of the nylon braided sleeve layer is provided with iron wires for bending and shaping at equal intervals. A PVC sleeve is fitted around the iron wires, and the PVC sleeve is adhered and fixed to the inner surface of the nylon braided sleeve layer.

[0010] By adopting the above technical solution, the wire will bend when the positioning sleeve is bent by personnel, thereby assisting in the positioning of the cable's bent end and improving the stability of the cable's wiring at the bent end.

[0011] Specifically, the inner wall of the end sleeve is bonded and fixed to the outer wall of the polyolefin layer.

[0012] The beneficial effects of this utility model are as follows: The cable assembly composed of positioning sleeves provides power personnel with a set of low-smoke halogen-free cables with good wiring stability. The positioning sleeves can assist in positioning the cable bends and provide protection at the bends, preventing fatigue cracking of the cable's outer material due to bending requirements during wiring. This avoids the accelerated aging caused by moisture / chemical substances penetrating through the cracks, further improving the cable's stability. The wire component, when applied to the positioning sleeves, bends, thus assisting in positioning the bent end of the cable, improving the stability of the wiring at the bend, and reducing the risk of angular rebound due to elastic deformation. This solves the problems of existing low-smoke halogen-free cables, where stress concentration in the outer material easily leads to fatigue cracks during bending in certain scenarios, affecting cable lifespan, and the problem of angular rebound due to elastic deformation after bending, affecting wiring accuracy. Attached Figure Description

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

[0014] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0015] Figure 2 This is a schematic diagram of the cable assembly of this utility model;

[0016] Figure 3 This is a schematic diagram of the positioning sleeve of this utility model;

[0017] In the diagram: Positioning sleeve 1, Nylon braided sleeve 11, Polyolefin layer 12, Iron wire 13, PVC sleeve 14, End sleeve 15, Protrusion 16, Perforation 17, Cable group 2, Low smoke halogen-free insulation layer 21, Fiberglass layer 22, Mica tape layer 23, Oxygen-free copper core layer 24, Strap 3, Velcro hook and loop side 31, Velcro loop side 32. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] like Figure 1-3 As shown, the present invention discloses a low-smoke halogen-free cable with good wiring stability, comprising a cable assembly 2 with a wiring positioning sleeve 1 fitted on its outer diameter. The cable assembly 2 includes a low-smoke halogen-free insulation layer 21, a fiberglass layer 22, a mica tape layer 23, and an oxygen-free copper core layer 24. The fiberglass layer 22, the mica tape layer 23, and the oxygen-free copper core layer 24 are sequentially disposed within the low-smoke halogen-free insulation layer 21. At least one positioning sleeve 1 is provided, and the positioning sleeve 1 is fitted on the outer periphery of the low-smoke halogen-free insulation layer 21. The low-smoke halogen-free insulation layer 21 is made of polyolefin, magnesium hydroxide, or aluminum hydroxide material.

[0020] The present invention also includes a positioning sleeve 1 comprising a deformable sleeve assembly with end sleeves 15 connected to both ends. A protrusion 16 is provided on one side of the end sleeve 15, and a through hole 17 is provided through the protrusion 16. A strap 3 is provided on the positioning sleeve 1, and the strap 3 is inserted through the through hole 17. The strap 3 has a hook and loop surface 31 and a loop terry surface 32 respectively provided at both ends.

[0021] When in use, the cable tie 3 makes it easy for personnel to bind and fix the cable to the cable brackets used in the site, thereby further improving the stability of the cable wiring.

[0022] The present invention also includes that the deformable sleeve assembly includes a nylon braided sleeve layer 11, the outer surface of the nylon braided sleeve layer 11 is coated with a polyolefin layer 12, the inner wall of the nylon braided sleeve layer 11 is provided with iron wires 13 for bending and shaping at equal intervals, the outer periphery of the iron wires 13 is covered with a PVC sleeve 14, and the PVC sleeve 14 is adhered and fixed to the inner surface of the nylon braided sleeve layer 11.

[0023] When in use, by using the setting of wire 13, after the personnel apply force to the bending of the positioning sleeve 1, the wire 13 will bend, thereby achieving auxiliary positioning of the bent end of the cable and improving the stability of the cable bending end wiring.

[0024] This utility model also includes that the inner wall of the end sleeve 15 is adhered and fixed to the outer wall of the polyolefin layer 12.

[0025] In use, the cable group 2 is placed on the cable support or cable tray where the cabling is to be laid. During this process, according to the requirements of the cable bending point, the required positioning sleeve 1 is selected and fitted onto the bending point of the cable group 2. When bending, the personnel simultaneously bend the positioning sleeve 1 along with the bending point of the cable group 2. The iron wire 13 inside the positioning sleeve 1 will bend, thereby assisting in shaping the cable bending point. At the same time, it can protect the cable bending point, preventing fatigue cracking of the cable outer material caused by the bending requirements of the cabling, which can lead to the penetration of water vapor / chemical substances in the environment along the cracks and accelerate aging. This further improves the stability of the cable. With the setting of the cable tie 3, it is easy for personnel to tie and fix the cable to the cable support used in the site, thereby further improving the stability of the cable cabling.

[0026] Furthermore, the length and thickness of the positioning sleeve 1 and the thickness of the wire 13 are set according to actual needs. For example, if the cable thickness is high, the length of the positioning sleeve 1 and the thickness of the wire 13 are increased.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A low-smoke halogen-free cable with good wiring stability, characterized in that, The cable assembly (2) includes a cable positioning sleeve (1) fitted on the outer diameter. The cable assembly (2) includes a low-smoke halogen-free insulation layer (21), a fiberglass layer (22), a mica tape layer (23), and an oxygen-free copper core layer (24). The fiberglass layer (22), the mica tape layer (23), and the oxygen-free copper core layer (24) are sequentially arranged inside the low-smoke halogen-free insulation layer (21). At least one positioning sleeve (1) is provided, and the positioning sleeve (1) is fitted on the outer periphery of the low-smoke halogen-free insulation layer (21).

2. The low-smoke halogen-free cable with good wiring stability according to claim 1, characterized in that, The positioning sleeve (1) includes a deformable sleeve assembly with end sleeves (15) connected to both ends. A protrusion (16) is provided on one side of the end sleeve (15), and a through hole (17) is provided in the protrusion (16).

3. The low-smoke halogen-free cable with good wiring stability according to claim 2, characterized in that, The deformable sleeve assembly includes a nylon braided sleeve layer (11), the outer surface of which is coated with a polyolefin layer (12), and the inner wall of the nylon braided sleeve layer (11) is provided with iron wires (13) for bending and shaping at equal intervals. A PVC sleeve (14) is fitted around the outer periphery of the iron wires (13), and the PVC sleeve (14) is adhered and fixed to the inner surface of the nylon braided sleeve layer (11).

4. The low-smoke halogen-free cable with good wiring stability according to claim 3, characterized in that, The inner wall of the end sleeve (15) is bonded and fixed to the outer wall of the polyolefin layer (12).

5. The low-smoke halogen-free cable with good wiring stability according to claim 4, characterized in that, The positioning sleeve (1) is provided with a strap (3), which is inserted into the perforation (17). The two ends of the strap (3) are respectively provided with a hook and loop surface (31) and a loop surface (32).

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