High-temperature-resistant flame-retardant power protection tube

Abstract

The utility model discloses a high-temperature-resistant flame-retardant electric power protection tube which comprises a protection outer tube, a heat insulation net layer fixedly arranged on the inner end face of the protection outer tube, tensile fiber lines and a flame-retardant layer arranged on the inner end face of the heat insulation net layer at equal intervals, and the flame-retardant layer is fixedly arranged on the inner end face of the heat insulation net layer. According to the utility model, the heat insulation net layer and the tensile fiber lines are arranged, the heat insulation net layer can quickly and stably block high temperature, and meanwhile, the first flame-retardant layer and the second flame-retardant layer in the middle of the electric power pipe have dual flame-retardant structures, so that the flame-retardant performance inside and outside the electric power pipe is effectively improved, and the service life of the electric power pipe is prolonged. Meanwhile, the protective outer pipe and the connecting layer are made of high-strength materials, the supporting stability of the power pipe from inside to outside can be effectively improved, and then the follow-up service life of the power pipe is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of power protection pipe technology, specifically a high-temperature resistant and flame-retardant power protection pipe. Background Technology

[0002] The primary function of power protection conduits is to protect cables from damage caused by the external environment. They isolate cables from corrosive substances, moisture, dust, etc., preventing them from aging, corroding, or short-circuiting due to contact with these substances. At the same time, they can also withstand a certain amount of mechanical pressure, preventing cables from being damaged by external pressure or impact.

[0003] For example, the utility model patent disclosed in publication number CN209642229U discloses a high-temperature resistant PVC-U power cable protection pipe, comprising a first PVC layer, a second PVC layer, glass wool, a first ring, a second ring, an inner cavity, a spring, a plate, a locking block, a third ring, and a locking cavity. The glass wool layer filling the space between the first and second PVC layers in this utility model increases the high-temperature resistance of the power cable protection pipe. When the external temperature of the power cable protection pipe is too high, the glass wool layer effectively prevents heat transfer, avoiding damage to the internal cable due to excessive external temperature. The locking block and locking cavity interconnect several cable protection pipes, unlike the traditional method of connecting power cable protection pipes using a sleeve connection, which increases the diameter of the cable protection pipe and thus increases friction, facilitating construction.

[0004] Although the aforementioned power protection tubes are easy to disassemble, their internal structure, consisting of only a single-layer glass surface, results in insufficient flame retardancy and high-temperature resistance, thus reducing their service life. Therefore, there is an urgent need for a high-temperature resistant and flame-retardant power protection tube to address these issues. Utility Model Content

[0005] The purpose of this invention is to provide a high-temperature resistant and flame-retardant power protection tube to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature resistant and flame-retardant power protection tube, comprising a protective outer tube, a heat insulation mesh layer fixedly disposed on the inner end face of the protective outer tube, and tensile fiber threads equidistantly disposed on the inner end face of the heat insulation mesh layer.

[0007] A flame-retardant layer is fixedly disposed on the inner end face of the heat insulation mesh layer;

[0008] A supporting inner layer is fixedly disposed on the inner end face of the flame-retardant layer, and an insulating inner layer is fixedly disposed on the inner end face of the supporting inner layer.

[0009] Preferably, the flame-retardant layer includes a supporting connecting layer, a first flame-retardant layer is fixedly disposed on the outer end face of the connecting layer, and a second flame-retardant layer is fixedly disposed on the inner end face of the connecting layer.

[0010] Preferably, the heat insulation mesh layer is made of polypropylene, and the tensile fiber is made of HDPE, which can effectively improve the tensile strength and heat insulation performance inside the power pipe.

[0011] Preferably, the first flame-retardant layer and the second flame-retardant layer are made of PEX. The first flame-retardant layer and the second flame-retardant layer have sufficient heat resistance and can effectively improve the flame-retardant performance inside the power pipe.

[0012] Preferably, the connecting layer is made of MPP material, which has sufficient strength and rigidity to withstand the pressure of underground soil and traffic loads, ensuring the stability and safety of the pipeline.

[0013] Preferably, the inner support layer is made of PVC, which can effectively improve the support stability inside the power pipe.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model, by setting up a heat insulation mesh layer and tensile fiber lines, enables the heat insulation mesh layer to quickly and stably block high temperatures. At the same time, the first and second flame-retardant layers located in the middle of the power pipe have a dual flame-retardant structure, thereby effectively improving the flame-retardant performance of the inside and outside of the power pipe. In addition, the protective outer pipe and the connecting layer are made of high-strength materials, which can effectively improve the support stability of the power pipe from the inside out, thereby improving the service life of the power pipe. Attached Figure Description

[0016] Figure 1 This is an exploded view of the main body of this utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of the present utility model;

[0018] Figure 3 This is a exploded view of the flame-retardant layer of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the flame-retardant layer of this utility model.

[0020] In the diagram: 1-protective outer tube, 2-heat insulation mesh layer, 3-tensile fiber thread, 4-flame retardant layer, 5-supporting inner layer, 6-insulating inner layer, 41-first flame retardant layer, 42-connecting layer, 43-second flame retardant layer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 One embodiment of this utility model provides a high-temperature resistant and flame-retardant power protection tube, comprising a protective outer tube 1, a heat insulation mesh layer 2 fixedly disposed on the inner end face of the protective outer tube 1, and tensile fiber threads 3 equidistantly disposed on the inner end face of the heat insulation mesh layer 2.

[0023] Flame-retardant layer 4 is fixedly installed on the inner end face of the heat insulation mesh layer 2;

[0024] The inner support layer 5 is fixedly disposed on the inner end face of the flame-retardant layer 4, and an insulating inner layer 6 is fixedly disposed on the inner end face of the inner support layer 5.

[0025] The flame-retardant layer 4 includes a connecting layer 42 for support. A first flame-retardant layer 41 is fixedly disposed on the outer end face of the connecting layer 42, and a second flame-retardant layer 43 is fixedly disposed on the inner end face of the connecting layer 42.

[0026] The insulation mesh layer 2 is made of polypropylene, and the tensile fiber 3 is made of HDPE, which can effectively improve the tensile strength and insulation performance inside the power conduit.

[0027] The first flame-retardant layer 41 and the second flame-retardant layer 43 are made of PEX. The first flame-retardant layer 41 and the second flame-retardant layer 43 have sufficient heat resistance and can effectively improve the flame-retardant performance inside the power pipe.

[0028] The connecting layer 42 is made of MPP material, which has sufficient strength and rigidity to withstand the pressure of underground soil and traffic loads, ensuring the stability and safety of the pipeline.

[0029] The inner support layer 5 is made of PVC, which can effectively improve the internal support stability of the power pipe.

[0030] Working principle: When using the power pipe, the heat insulation mesh layer 2 can quickly and stably block high temperatures. At the same time, the first flame-retardant layer 41 and the second flame-retardant layer 43 located in the middle of the power pipe have a dual flame-retardant structure, which effectively improves the flame-retardant performance of the inside and outside of the power pipe. Meanwhile, the protective outer pipe 1 and the connecting layer 42 are both made of high-strength materials, which can effectively improve the support stability of the power pipe from the inside out, thereby improving the service life of the power pipe.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-temperature resistant and flame-retardant electrical protection pipe, comprising a protective outer tube (1), a heat insulation mesh layer (2) fixedly disposed on the inner end face of the protective outer tube (1), and tensile fiber threads (3) equidistantly disposed on the inner end face of the heat insulation mesh layer (2), characterized in that: Flame-retardant layer (4), wherein the flame-retardant layer (4) is fixedly disposed on the inner end face of the heat insulation mesh layer (2); A supporting inner layer (5) is fixedly disposed on the inner end face of the flame-retardant layer (4), and an insulating inner layer (6) is fixedly disposed on the inner end face of the supporting inner layer (5).

2. The high-temperature resistant and flame-retardant power protection tube according to claim 1, characterized in that: The flame-retardant layer (4) includes a connecting layer (42) for support. A first flame-retardant layer (41) is fixedly disposed on the outer end face of the connecting layer (42), and a second flame-retardant layer (43) is fixedly disposed on the inner end face of the connecting layer (42).

3. The high-temperature resistant and flame-retardant power protection tube according to claim 2, characterized in that: The heat insulation mesh layer (2) is made of polypropylene, and the tensile fiber thread (3) is made of HDPE.

4. The high-temperature resistant and flame-retardant power protection tube according to claim 2, characterized in that: The first flame-retardant layer (41) and the second flame-retardant layer (43) are made of PEX.

5. A high-temperature resistant and flame-retardant power protection tube according to claim 2, characterized in that: The connecting layer (42) is made of MPP.

6. The high-temperature resistant and flame-retardant power protection tube according to claim 2, characterized in that: The inner support layer (5) is made of PVC.

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