High-temperature-resistant low-smoke halogen-free flame-retardant power cable sleeve

Abstract

The utility model relates to the field of cable sheaths, in particular to a high-temperature-resistant low-smoke halogen-free flame-retardant power cable sheath. The protective sleeve comprises an upper protective sleeve and a lower protective sleeve detachably connected with the upper protective sleeve, wherein the upper protective sleeve and the lower protective sleeve are connected and spliced into a hollow cylinder; sliding grooves are formed in the left end face and the right end face of the lower sheath, and sliding blocks matched with the sliding grooves in shape and size are arranged on the left end face and the right end face of the upper sheath in a downward protruding mode. Connecting grooves are formed in the peripheral walls of the front ends of the upper sheath and the lower sheath, and a plurality of connecting convex blocks are arranged on the connecting grooves; connecting blocks matched with the connecting grooves in shape and size are connected to the peripheral walls of the rear ends of the upper sheath and the lower sheath, and connecting grooves are formed in the positions, corresponding to the connecting convex blocks, of the inner side faces of the connecting blocks. The utility model aims to provide the high-temperature-resistant low-smoke halogen-free flame-retardant power cable sleeve, and solves the problems that an adhesive tape or a rubber sheath is low in practicability and poor in use effect.

Description

Technical Field

[0001] The utility model relates to the field of cable sheaths, in particular to a high-temperature resistant, low-smoke, halogen-free and flame-retardant power cable sheath. Background Art

[0002] Cable is an electric energy or signal transmission device, usually composed of several or several groups of wires. Cables include power cables, control cables, compensation cables, shielded cables, high temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, etc. During long-term use, the cable surface is easily torn due to long-term exposure to the sun, aging, etc., which directly leads to damage to the core conductor of the cable and reduces the service life of the cable. After the outer surface of the cable is found to be damaged, insulating tape is usually wrapped around the damaged part or a rubber sheath is added to protect the damaged part before replacing the cable.

[0003] When using insulating tape to protect cables, the tape needs to be wrapped repeatedly according to the length of the damaged part of the cable, which is a cumbersome process. In addition, the subsequent removal of the insulating tape to repair the cable is cumbersome and has low practicality. When using rubber sheaths to protect cables, the rubber sheaths are limited in length and cannot completely cover the damaged part of the cable. Usually, multiple rubber sheaths are required. However, the rubber sheaths cannot be completely joined together, and rainwater easily falls from between two sheaths that are close to each other to the damaged part of the cable, resulting in poor use effect.

[0004] Therefore, how to design a high temperature resistant, low smoke, halogen-free, flame retardant power cable sheath that can solve the above problems is a technical problem that needs to be solved. Utility Model Content

[0005] In order to solve the above problems, the purpose of the utility model is to provide a high temperature resistant, low smoke, halogen-free and flame retardant power cable sheath, which solves the problem of low practicality and poor use effect of tape or rubber sheath.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it includes an upper sleeve and a lower sleeve detachably connected to the upper sleeve, the upper sleeve and the lower sleeve are connected to form a hollow cylinder; the left and right end surfaces of the lower sleeve are respectively provided with slide grooves, and the left and right end surfaces of the upper sleeve are respectively provided with sliding blocks protruding downwardly that match the shape and size of the slide grooves; the front end outer peripheral walls of the upper sleeve and the lower sleeve are respectively provided with connecting grooves, and the connecting grooves are provided with a plurality of connecting protrusions; the rear end outer peripheral walls of the upper sleeve and the lower sleeve are respectively connected with connecting blocks that match the shape and size of the connecting grooves, and the inner side surfaces of the connecting blocks are provided with connecting grooves at positions corresponding to the connecting protrusions.

[0007] Furthermore, after the upper sheath is connected to the lower sheath, the inner diameter thereof matches the outer diameter of the cable.

[0008] Furthermore, the upper jacket and the lower jacket both include, from the inside to the outside: an inner core layer, a heat insulation layer, and a tensile and wear-resistant layer.

[0009] Furthermore, the inner core layer is made of ceramic heat-resistant rubber material.

[0010] The utility model has the following beneficial effects:

[0011] 1. The utility model can use different numbers of upper sheaths and lower sheaths according to needs, connect the upper sheaths and lower sheaths at the front and rear ends through connecting grooves and connecting blocks, reduce the gap between the front and rear sheaths, prevent rainwater from falling from the gap to the damaged part of the cable, and improve the protective effect of the sheath.

[0012] 2. The upper sheath and the lower sheath of the utility model are detachably connected through a sliding groove and a slider, which is convenient for users to quickly install and remove the upper sheath and the lower sheath. It is highly practical and avoids affecting the cable when removing the sheath. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This utility model illustrates Figure 1 ;

[0014] Figure 2 This utility model illustrates Figure 2 ;

[0015] Figure 3 This is a schematic diagram of the use status of the utility model Figure 1 ;

[0016] Figure 4 This is a schematic diagram of the use status of the utility model Figure 2 ;

[0017] Figure 5 It is a schematic cross-sectional view of the upper sheath of the utility model.

[0018] Description of reference numerals:

[0019] 1-upper sheath, 11-slider, 12-connecting groove, 121-connecting protrusion, 13-connecting block, 131-connecting groove, 14-inner core layer, 15-thermal insulation layer, 16-tensile wear-resistant layer.

[0020] 2-lower sheath, 21-slideway. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] See also Figure 1-5As shown, the scheme includes an upper sheath 1 and a lower sheath 2 detachably connected to the upper sheath 1 , wherein the upper sheath 1 and the lower sheath 2 are connected to form a hollow cylinder for the cable to pass through the space between the upper sheath 1 and the lower sheath 2 .

[0023] The left and right end surfaces of the lower sleeve 2 are provided with slide grooves 21, and the left and right end surfaces of the upper sleeve 1 are provided with downwardly protruding sliders 11 that match the shape and size of the slide grooves 21; the front end peripheral walls of the upper sleeve 1 and the lower sleeve 2 are respectively provided with connecting grooves 12, and the connecting grooves 12 are provided with a plurality of connecting protrusions 121; the rear end peripheral walls of the upper sleeve 1 and the lower sleeve 2 are respectively connected with connecting blocks 13 that match the shape and size of the connecting grooves 12, and the inner side surfaces of the connecting blocks 13 are provided with connecting grooves 131 at positions corresponding to the connecting protrusions 121.

[0024] After the upper sheath 1 is connected to the lower sheath 2, the inner diameter thereof matches the outer diameter of the cable.

[0025] The upper jacket 1 and the lower jacket 2 both include, from the inside to the outside, an inner core layer 14 , a heat insulation layer 15 , and a tensile and wear-resistant layer 16 .

[0026] The inner core layer 14 is made of ceramic heat-resistant rubber material, which can effectively insulate heat. The optimal insulation layer 15 can be made of three layers of synthetic mica tape and two layers of rubber-coated glass fiber tape, which has good thermal insulation properties.

[0027] The working principle is roughly as follows:

[0028] When in use, first fix the upper sheath 1 and the lower sheath 2 from the damaged end of the cable, connect the upper sheath 1 and the lower sheath 2 to each other through the slider 11 and the slide groove 21, fix the upper sheath 1 and the lower sheath 2 at the damaged part of the cable, and then connect the appropriate number of upper sheaths 1 and lower sheaths 2 in sequence. Figure 4 As shown, align and snap fit the connecting block 13 at the rear end of the left upper cover 1 with the connecting groove 12 at the front end of the right upper cover 1, connect the left lower cover 2 with the left upper cover 1, and align and snap fit the connecting block 13 at the rear end of the left lower cover 2 with the connecting groove 12 at the front end of the right lower cover 2 to connect the front and rear cover.

[0029] The above description is only a specific implementation method of the utility model, and does not limit the patent scope of the utility model. Any equivalent structural transformation made using the contents of the utility model specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the utility model.

Claims

1. A high temperature resistant, low smoke, halogen-free flame retardant power cable sheath, characterized by: It comprises an upper sleeve (1) and a lower sleeve (2) detachably connected to the upper sleeve (1), wherein the upper sleeve (1) and the lower sleeve (2) are connected to form a hollow cylinder; The left and right end surfaces of the lower sleeve (2) are provided with slide grooves (21), and the left and right end surfaces of the upper sleeve (1) are provided with downwardly protruding sliders (11) that match the shape and size of the slide grooves (21); the front end peripheral walls of the upper sleeve (1) and the lower sleeve (2) are respectively provided with connecting grooves (12), and the connecting grooves (12) are provided with a plurality of connecting protrusions (121); the rear end peripheral walls of the upper sleeve (1) and the lower sleeve (2) are respectively connected with connecting blocks (13) that match the shape and size of the connecting grooves (12), and the inner side surfaces of the connecting blocks (13) are provided with connecting grooves (131) at positions corresponding to the connecting protrusions (121).

2. The high temperature resistant, low smoke, halogen-free flame retardant power cable sheath according to claim 1, characterized in that: After the upper sheath (1) and the lower sheath (2) are connected, the inner diameter thereof matches the outer diameter of the cable.

3. The high temperature resistant, low smoke, halogen-free flame retardant power cable sheath according to claim 1, characterized in that: The upper jacket (1) and the lower jacket (2) both comprise, from the inside to the outside: an inner core layer (14), a heat insulation layer (15) and a tensile wear-resistant layer (16).

4. The high temperature resistant, low smoke, halogen-free flame retardant power cable sheath according to claim 3, characterized in that: The inner core layer (14) is made of ceramic heat-resistant rubber material.

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