Anti-creeping low-smoke halogen-free cable sleeve

Abstract

The utility model relates to the technical field of power cables, and discloses an anti-creeping low-smoke halogen-free cable sleeve, which comprises a sleeve sheath, a cable inner core is arranged in the sleeve sheath, a protective layer is arranged between the sleeve sheath and the cable inner core, the protective layer sequentially comprises an insulating layer, a flame-retardant layer and a supporting layer from inside to outside, and the insulating layer is arranged between the cable inner core and the sleeve sheath. The supporting layer is formed by connecting multiple groups of arc-shaped structures in an inserted manner; a locking assembly is arranged on the outer surface of the sleeve outer skin and comprises a locking block and a fixing band, the fixing band is wound around the outer surface of the sleeve outer skin, and the two ends of the fixing band are detachably connected with the locking block. According to the utility model, a quick-release structure is adopted, so that the cable is convenient to detach, the internal insulating layer and the flame-retardant layer are convenient to maintain and replace, and the working efficiency is effectively improved; the anti-creeping and fireproof performance of the cable sleeve is improved, so that the service life of the cable sleeve is prolonged; the overall strength inside the sleeve is improved, the cable is protected from being corroded by chemical media and humid environments, and the service life of the cable is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of power cable technology, and in particular to a low-smoke halogen-free cable sleeve that prevents leakage. Background Technology

[0002] Cable conduit, also known as protective conduit or tubing, is a type of conduit used in electrical installations to protect wires and cables, allowing them to be inserted and replaced. Cable conduit is a new type of conduit material widely used in power engineering. To protect cables, protective conduits are installed in areas susceptible to external damage during cable laying.

[0003] Because cable conduits are easily corroded and damaged by wind and sun, replacing old cable conduits requires disconnecting the cable connections from the equipment terminals before reinstalling the conduit. This process is not only inefficient but also risky. In particular, when important equipment cannot be shut down, the inability to replace damaged cable conduits will pose numerous safety hazards. Furthermore, most conduits on the market lack waterproofing, which can lead to risks with long-term use.

[0004] Therefore, those skilled in the art urgently need to develop a low-smoke, halogen-free cable sheath that prevents leakage. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a low-smoke, halogen-free cable sheath that prevents electrical leakage.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a low-smoke halogen-free cable sheath for preventing leakage, comprising an outer sheath, an inner cable core disposed inside the outer sheath, a protective layer disposed between the outer sheath and the inner cable core, the protective layer comprising, from the inside out, an insulation layer, a flame-retardant layer and a support layer, a locking assembly disposed on the outer surface of the outer sheath, the locking assembly comprising a locking block and a fixing strap, the fixing strap being wound around the outer surface of the outer sheath, and the two ends of the fixing strap being detachably connected to the locking block.

[0007] Preferably, the locking block has two transverse slots inside, which are connected to the locking block. The top of the locking block has multiple locking holes, which are connected to the two transverse slots. The fixing band has multiple positioning holes.

[0008] Preferably, the two ends of the fixing band are located in two transverse slots, and each of the multiple locking holes is provided with a locking screw. The bottom of the multiple locking screws passes through the positioning hole on the fixing band, and the multiple locking screws are threadedly connected to the locking block.

[0009] Preferably, there are multiple locking components, and the multiple locking components are evenly distributed along the axial direction of the outer sheath of the sleeve.

[0010] Preferably, the support layer is composed of multiple sets of arc-shaped structures, and the multiple sets of arc-shaped structures are interlocked with each other.

[0011] Preferably, a water-absorbing layer is provided between the insulating layer and the flame-retardant layer.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, pipe disassembly only requires unscrewing the locking screws and removing the fixing strap and outer sheath of the sleeve. The support layer adopts a quick-release structure, which facilitates disassembly and maintenance and replacement of the internal insulation and flame-retardant layers, effectively improving work efficiency. Through the insulation, flame-retardant, and support layers, the leakage prevention and fire resistance of the cable sleeve can be improved, thereby increasing the service life of the cable sleeve. The fixing strap and locking block are used to fasten the outer sheath of the sleeve, improving the overall strength of the sleeve. The water-absorbing layer uses a superabsorbent polymer resin, which, through its excellent water absorption and protective properties, protects the cable from corrosion by chemical media and humid environments, extending its service life. Attached Figure Description

[0014] Figure 1 This is a top view of the structure of this utility model;

[0015] Figure 2 This is a front sectional view of the outer sheath of the sleeve described in this utility model;

[0016] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0017] Figure 4 This is a front sectional view of the locking block described in this utility model.

[0018] In the diagram: 1-outer sheath of the sleeve; 2-locking block; 3-fixing strap; 4-inner core of the cable; 5-insulation layer; 6-absorbent layer; 7-flame retardant layer; 8-support layer; 9-locking screw. Detailed Implementation

[0019] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0020] In the description of this invention, 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. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection 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 invention based on the specific circumstances.

[0022] Please see Figures 1-4 This utility model provides an embodiment: a low-smoke halogen-free cable sheath for preventing leakage, including a sheath 1, a cable core 4 inside the sheath 1, a protective layer between the sheath 1 and the cable core 4, the protective layer consisting of an insulation layer 5, a flame-retardant layer 7 and a support layer 8 from the inside out, the support layer 8 being composed of multiple sets of arc-shaped structures, and the multiple sets of arc-shaped structures being interlocked with each other.

[0023] The insulation layer 5 is made of insulating rubber material, the flame retardant layer 7 is made of asbestos flame retardant material, and the support layer 8 adopts a multi-segment structure combination, making disassembly more convenient. Through the insulation layer 5, the flame retardant layer 7 and the support layer 8, the leakage prevention and fire prevention performance of the cable sleeve can be improved, thereby increasing the service life of the cable sleeve.

[0024] The outer surface of the sleeve sheath 1 is provided with a locking assembly, which includes a locking block 2 and a fixing band 3. The fixing band 3 is wrapped around the outer surface of the sleeve sheath 1, and both ends of the fixing band 3 are detachably connected to the locking block 2.

[0025] Furthermore, the locking block 2 has two transverse slots inside, which are connected to the locking block 2. The top of the locking block 2 has multiple locking holes, which are connected to the two transverse slots. The fixing band 3 has multiple positioning holes, and the two ends of the fixing band 3 are respectively located in the two transverse slots. Each of the multiple locking holes is provided with a locking screw 9. The bottom of the multiple locking screws 9 passes through the positioning holes on the fixing band 3, and the multiple locking screws 9 are threadedly connected to the locking block 2. There are multiple locking components, and the multiple locking components are evenly distributed along the axial direction of the outer skin 1 of the sleeve.

[0026] The outer casing 1 is secured by the fixing strap 3 and the locking block 2, which improves the overall strength of the casing. When disassembling, simply unscrew the locking screw 9 and remove the fixing strap 3 and the outer casing 1. The support layer 8 adopts a quick-release structure, which is easy to disassemble and facilitates the maintenance of the internal insulation layer 5 and flame-retardant layer 7.

[0027] Furthermore, a water-absorbing layer 6 is provided between the insulation layer 5 and the flame-retardant layer 7. The water-absorbing layer 6 is made of superabsorbent polymer resin, which protects the cable from corrosion by chemical media and humid environments through its good water absorption and protective properties, thus extending its service life.

[0028] The working principle of this utility model is as follows: During disassembly, simply unscrew the locking screw 9, remove the fixing strap 3 and the outer sheath 1. The support layer 8 adopts a quick-release structure, which is convenient for disassembly and maintenance of the internal insulation layer 5 and flame-retardant layer 7. The water-absorbing layer 6 is made of superabsorbent polymer resin, which protects the cable from corrosion by chemical media and humid environments through its good water absorption and protective performance, thus extending its service life. During replacement and installation, the insulation layer 5, water-absorbing layer 6, and flame-retardant layer 7 are installed in sequence on the inner core 4 of the cable, and the support layer 8 is fastened. After the outer sheath 1 is wrapped around the outer surface of the support layer 8, it can be secured with the fixing strap 3.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A low smoke zero halogen cable sheath which is electrically leakproof, comprising a sheath skin (1), characterized in that: The inside of the sleeve skin (1) is provided with a cable inner core (4), and a protective layer is arranged between the sleeve skin (1) and the cable inner core (4), the protective layer comprises, from inside to outside, an insulation layer (5), a flame-retardant layer (7) and a supporting layer (8), the supporting layer (8) is composed of a plurality of arc structures, and the arc structures are connected in a plug-in mode; The outer surface of the sleeve skin (1) is provided with a locking assembly, the locking assembly comprises a locking block (2) and a fixing belt (3), the fixing belt (3) is wound on the outer surface of the sleeve skin (1), and the two ends of the fixing belt (3) are detachably connected with the locking block (2).

2. A low smoke zero halogen cable sheath as claimed in claim 1, characterised in that: The inside of the locking block (2) is provided with two transverse insertion grooves, the two transverse insertion grooves are communicated with the locking block (2), the top of the locking block (2) is provided with a plurality of locking holes, the plurality of locking holes are communicated with the two transverse insertion grooves, and the fixing belt (3) is provided with a plurality of positioning holes.

3. A low smoke zero halogen cable sheath as claimed in claim 2, characterised in that: The two ends of the fixing belt (3) are located in the two transverse insertion grooves respectively, a locking screw (9) is arranged in each of the plurality of locking holes, the bottom of the locking screw (9) penetrates through the positioning hole in the fixing belt (3), and the locking screw (9) is threadedly connected with the locking block (2).

4. A low smoke zero halogen cable sheath as claimed in claim 3, characterised in that: The number of the locking assemblies is plural, and the plurality of locking assemblies are uniformly distributed along the axial direction of the sleeve skin (1).

5. A low smoke zero halogen cable sheath as claimed in claim 1, wherein: The insulation layer (5) and the flame-retardant layer (7) are provided with a water absorption layer (6).

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