Environment-friendly halogen-free flame-retardant MPP cable protection tube

Abstract

The utility model discloses an environment-friendly halogen-free flame-retardant MPP cable protection pipe which comprises an outer pipe, one end of the outer pipe is provided with a groove, the other end of the outer pipe is fixedly provided with a protruding block, the upper portion of the outer pipe is sleeved with a first clamping sleeve, the two sides of the first clamping sleeve are both fixedly provided with fixing blocks, the upper portions of the fixing blocks are provided with fixing bolts in a penetrating mode, and the outer pipe is provided with a second clamping sleeve. A second clamping sleeve is mounted below the first clamping sleeve; according to the environment-friendly halogen-free flame-retardant MPP cable protection pipe, the outer pipe, the flame-retardant filling block, the reinforcing ribs and the inner pipe are used in cooperation, the flame-retardant filling block is made of a polypropylene flame-retardant material, and the flame-retardant filling block has good thermal stability and chemical stability, can keep structural integrity in a high-temperature environment, and is not prone to deformation or generation of toxic gas; the inner cable can be effectively subjected to fireproof protection, the outer pipe and the inner pipe are both made of MPP materials, the bending resistance and compression resistance of the outer pipe and the inner pipe can be improved through the reinforcing ribs, and the situation that the cable is damaged due to the fact that the device is subjected to external pressure is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cable protection pipes, in particular to an environment-friendly halogen-free flame-retardant MPP cable protection pipe. Background Technique

[0002] A cable protection pipe refers to a metal protection pipe with a certain mechanical strength laid on the outer layer of a cable to prevent the cable from being damaged. The cable protection pipe is mainly installed in the section where the communication cable crosses the power line to prevent the power line from breaking and causing a short-circuit accident, causing the communication cable and the steel wire rope to be electrified, so as to protect the cable, the switch, the circuit board, and even the whole machine from being burned out, and also play a certain role in isolating the magnetic field interference of the power line. The MPP cable protection pipe, full name polypropylene modified polyolefin cable protection pipe, is a protection material specially designed for power cables.

[0003] However, the existing MPP cable protection pipes have poor flame-retardant performance, which is not convenient for fire protection of the internal cables, and the protection effect is not comprehensive enough. Therefore, this application provides an environment-friendly halogen-free flame-retardant MPP cable protection pipe to meet the requirements. Content of the Utility Model

[0004] The purpose of the utility model is to provide an environment-friendly halogen-free flame-retardant MPP cable protection pipe to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: an environment-friendly halogen-free flame-retardant MPP cable protection pipe, including an outer pipe, one end of the outer pipe is provided with a groove, the other end of the outer pipe is fixed with a convex block, a first clamping sleeve is sleeved above the outer pipe, both sides of the first clamping sleeve are fixed with fixing blocks, a fixing bolt penetrates through the upper part of the fixing block, a second clamping sleeve is installed below the first clamping sleeve, a flame-retardant filling block is arranged inside the outer pipe, a reinforcing rib is fixed inside the outer pipe, and an inner pipe is fixed inside the reinforcing rib.

[0006] Preferably, the convex blocks are circumferentially distributed at one end of the outer pipe, and the shape of the convex block conforms to that of the groove.

[0007] Preferably, the first clamping sleeve is threadedly connected with the second clamping sleeve through a fixing bolt, and the fixing bolts are symmetrically arranged with respect to the central axis of the first clamping sleeve.

[0008] Preferably, the flame-retardant filling blocks are equidistantly distributed inside the outer pipe, and the flame-retardant filling blocks are made of polypropylene flame-retardant materials.

[0009] Preferably, the reinforcing rib and the inner pipe are integrally structured, and the inner pipe coincides with the central axis of the outer pipe.

[0010] Preferably, a waterproof layer is provided inside the inner pipe, and the waterproof layer is composed of polyurethane waterproof coating.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. For this environmentally friendly halogen-free flame-retardant MPP cable protection pipe, through the combined use of the outer pipe, flame-retardant filling blocks, reinforcing ribs, and inner pipe, the flame-retardant filling block material is polypropylene flame-retardant material, which has good thermal stability and chemical stability, can maintain structural integrity in high-temperature environments, is not easily deformed or produce toxic gases, and can effectively provide fire protection for the internal cables. Both the outer pipe and the inner pipe are made of MPP material, and the reinforcing ribs can enhance the anti-bending and compressive properties of the outer pipe and the inner pipe, avoiding cable damage caused by external pressure on the device;

[0013] 2. For this environmentally friendly halogen-free flame-retardant MPP cable protection pipe, through the settings of the groove, convex block, first sleeve, fixed block, fixing bolt, and second sleeve, the grooves and convex blocks of two outer pipes can be docked, and at the same time, the first sleeve and the second sleeve can be sleeved on the outside of the outer pipe, facilitating the splicing use of the device and protecting cables of any length. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the structure of the first sleeve of the present utility model;

[0016] Figure 3 is a schematic diagram of the outer pipe of the present utility model;

[0017] Figure 4 is a sectional view schematic diagram of the outer pipe of the present utility model.

[0018] In the figure: 1. Outer pipe; 2. Groove; 3. Convex block; 4. First sleeve; 5. Fixed block; 6. Fixing bolt; 7. Second sleeve; 8. Flame-retardant filling block; 9. Reinforcing rib; 10. Inner pipe; 11. Waterproof layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying 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 of 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] Please refer to Figures 1-3, the present utility model provides a technical solution: an environment-friendly halogen-free flame-retardant MPP cable protection pipe, which includes an outer pipe 1. One end of the outer pipe 1 is provided with a groove 2, and the other end of the outer pipe 1 is fixed with a convex block 3. The convex blocks 3 are circumferentially distributed at one end of the outer pipe 1, and the shape of the convex block 3 conforms to that of the groove 2. By docking the grooves 2 and the convex blocks 3 of two outer pipes 1, the outer pipe 1 will not rotate when spliced and used. A first clamping sleeve 4 is sleeved above the outer pipe 1. The first clamping sleeve 4 is threadedly connected to the second clamping sleeve 7 through a fixing bolt 6. The fixing bolts 6 are symmetrically arranged with respect to the central axis of the first clamping sleeve 4. By sleeving the first clamping sleeve 4 and the second clamping sleeve 7 on the outside of the outer pipe 1, it is convenient to splice and use the device, and cables of any length can be protected. Fixed blocks 5 are fixed on both sides of the first clamping sleeve 4, and fixing bolts 6 penetrate through the upper part of the fixed blocks 5. A second clamping sleeve 7 is installed below the first clamping sleeve 4;

[0021] Please refer to Figures 3-4 , a flame-retardant filling block 8 is arranged inside the outer pipe 1. The flame-retardant filling blocks 8 are equidistantly distributed on the inner side of the outer pipe 1. The flame-retardant filling block 8 is made of polypropylene flame-retardant material. The material of the flame-retardant filling block 8 is polypropylene flame-retardant material, which has good thermal stability and chemical stability, can maintain structural integrity in high-temperature environments, is not easy to deform or generate toxic gases, and can effectively provide fire protection for the internal cable. A reinforcing rib 9 is fixed inside the outer pipe 1. The reinforcing rib 9 and the inner pipe 10 are integrally structured. The inner pipe 10 coincides with the central axis of the outer pipe 1. Through the reinforcing rib 9, the anti-bending and compressive properties of the outer pipe 1 and the inner pipe 10 can be improved, and the cable can be prevented from being damaged due to external pressure on the device. The inner pipe 10 is fixed inside the reinforcing rib 9. A waterproof layer 11 is arranged inside the inner pipe 10. The waterproof layer 11 is composed of polyurethane waterproof coating, which can prevent water from penetrating into the cable and causing cable damage, and further improves the protection effect on the cable.

[0022] Working principle: When using this environment-friendly halogen-free flame-retardant MPP cable protection pipe, first dock the grooves 2 and the convex blocks 3 of two outer pipes 1. At the same time, the first clamping sleeve 4 and the second clamping sleeve 7 can be sleeved on the outside of the outer pipe 1, and the fixing bolts 6 are screwed in. According to the length of the cable, the corresponding number of outer pipes 1 is spliced. Then, the outer pipe 1 is sleeved on the outside of the cable to protect the cable. At the same time, the material of the flame-retardant filling block 8 is polypropylene flame-retardant material, which has good thermal stability and chemical stability, can maintain structural integrity in high-temperature environments, is not easy to deform or generate toxic gases, and can effectively provide fire protection for the internal cable. Both the outer pipe 1 and the inner pipe 10 are made of MPP material. Through the reinforcing rib 9, the anti-bending and compressive properties of the outer pipe 1 and the inner pipe 10 can be improved. Just like this, the use process of this environment-friendly halogen-free flame-retardant MPP cable protection pipe is completed.

[0023] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly halogen-free flame-retardant MPP cable protection tube, comprising an outer tube (1), characterized in that: A groove (2) is provided at one end of the outer tube (1), a convex block (3) is fixed at the other end of the outer tube (1), a first clamping sleeve (4) is sleeved on the upper side of the outer tube (1), fixing blocks (5) are fixed on both sides of the first clamping sleeve (4), a fixing bolt (6) passes through the upper side of the fixing block (5), a second clamping sleeve (7) is installed below the first clamping sleeve (4), a flame retardant filling block (8) is provided inside the outer tube (1), a reinforcing rib (9) is fixed inside the outer tube (1), and an inner tube (10) is fixed on the inner side of the reinforcing rib (9).

2. The environmentally friendly halogen-free flame-retardant MPP cable protection tube according to claim 1 is characterized in that: The protrusions (3) are distributed in a circumferential manner at one end of the outer tube (1), and the shapes of the protrusions (3) and the grooves (2) are consistent.

3. The environmentally friendly halogen-free flame-retardant MPP cable protection tube according to claim 1 is characterized in that: The first clamping sleeve (4) is threadedly connected to the second clamping sleeve (7) via a fixing bolt (6), and the fixing bolt (6) is symmetrically arranged with respect to the central axis of the first clamping sleeve (4).

4. The environmentally friendly halogen-free flame-retardant MPP cable protection tube according to claim 1 is characterized in that: The flame retardant filling blocks (8) are distributed at equal intervals on the inner side of the outer tube (1), and the flame retardant filling blocks (8) are made of polypropylene flame retardant material.

5. The environmentally friendly halogen-free flame-retardant MPP cable protection tube according to claim 1 is characterized in that: The reinforcing rib (9) and the inner tube (10) are arranged as an integrated structure, and the central axis of the inner tube (10) coincides with the central axis of the outer tube (1).

6. The environmentally friendly halogen-free flame-retardant MPP cable protection tube according to claim 1, characterized in that: A waterproof layer (11) is provided inside the inner tube (10), and the waterproof layer (11) is made of polyurethane waterproof coating.

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