PVC cable protection pipe with cold resistance function

Abstract

The utility model discloses a PVC cable protection pipe with cold resistance function, including the cable for support, be located the outside of cable is provided with cold -proof filling layer for preventing cold, compression support device, compression support device fixed setting in the outer end surface of cold -proof filling layer, compression support device is used for the protection and compression resistance of cable. The utility model discloses a compression support device is set up, when the cable protection operation, the double wear -resisting protection of tensile net layer and protection pipe casing can effectively improve the wear resistance of cable outside, the temperature -resisting layer, the support layer and cold -proof filling layer all are cold -resistant heat preservation material, can effectively improve the cold resistance of cable outside, and the compression snap ring in a plurality of support layer inside can support the various pressure outside through the elastic deformation, effectively improved the compression resistance of cable outside whole, also improved the service life of cable subsequently.

Description

Technical Field

[0001] This utility model relates to the field of PVC cable protection pipe technology, specifically a PVC cable protection pipe with cold resistance function. Background Technology

[0002] PVC cable protection pipe, also known as polyvinyl chloride cable protection pipe, is a type of pipe made from polyvinyl chloride resin as the main raw material through a modification process. It is widely used in power, communication, construction and other fields to protect cables and wires from damage caused by external forces or environmental factors.

[0003] For example, the utility model patent disclosed in publication number CN218733143U discloses a low-temperature resistant CPVC power cable protection pipe, including a protective inner pipe. The inner side of the protective inner pipe has a wire insertion groove, and the outer side of each wire insertion groove has six supporting ribs. A connecting seat is located on the outer side of the protective inner pipe, and a buffer rod is located at the upper end of the connecting seat. A protective pipe is located at the upper end of the buffer rod. A wear-resistant layer is located on the outer side of the protective pipe. The protective pipe is sequentially provided with a heat-conducting layer, a heat-insulating layer, and an insulating layer. This utility model utilizes a heat-absorbing material coated on the outside of the wear-resistant layer, and thermal insulation asbestos filling the inside of the wear-resistant and thermally conductive layers. This facilitates the absorption of external heat into the protective pipe, which is then dissipated to the inner wall of the protective pipe by the thermal insulation asbestos and the heat-conducting layer. The buffer rod cushions the interior of the protective pipe, preventing external pressure from squeezing the cable and thus protecting the cable.

[0004] Although the aforementioned cable protection pipes have corresponding cold resistance and compression resistance functions, the stability of the compression buffer between the inside and outside of the protection pipe by only using the buffer rod is still insufficient. At the same time, the cold resistance of the cable protection pipes for the internal cables is also insufficient. Therefore, there is an urgent need for a PVC cable protection pipe with cold resistance function to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a PVC cable protection pipe with cold resistance to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a PVC cable protection pipe with cold-resistant function, comprising a cable for support, and a cold-proof filling layer for cold protection disposed on the outside of the cable.

[0007] A pressure-resistant support device is fixedly installed on the outer end face of the cold-proof filling layer, and the pressure-resistant support device is used to protect and resist pressure on the cable;

[0008] The protective tube housing is fixedly installed outside the pressure-resistant support device, and a wear-resistant mesh layer is provided on the outer end face of the protective tube housing, and a tensile-resistant mesh layer is provided on the inner end face of the protective tube housing. The protective tube housing is used to provide wear-resistant protection for the outside of the cable.

[0009] Preferably, the compression-resistant support device includes a support layer, with equidistant limiting grooves formed on the outer end face of the support layer, and a compression-resistant retaining ring fixedly engaged on the inner end face of the limiting groove. A flame-retardant layer is provided on the outer end face of the support layer, and limiting protrusions are provided equidistantly on the outer side of the flame-retardant layer. A heat-insulating layer is fixedly provided on the outer end face of the flame-retardant layer through the limiting protrusions.

[0010] Preferably, the inner end face of the insulation layer is hollow, which can effectively improve the external insulation performance of the cable, thereby reducing the impact of high temperature and low temperature on the cable.

[0011] Preferably, the tensile mesh layer is made of nylon, and the insulation layer is made of polyisobutylene. The tensile mesh layer can effectively improve the wear resistance of the inside of the protective tube shell.

[0012] Preferably, the material of the cold-proof filling layer is polyurethane foam, which can effectively improve the cold resistance of the cable.

[0013] Preferably, the flame-retardant layer is made of flame-retardant polyvinyl chloride, and the support layer is made of heat-resistant polyethylene. When the cable is exposed to fire, the flame-retardant layer can perform fire-resistant and flame-retardant operations on the outside of the cable, improving the flame-retardant and fire-resistant performance of the cable. At the same time, the support layer and the flame-retardant layer are both made of heat-insulating and fire-resistant materials, which can further improve the flame-retardant performance of the cable.

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

[0015] 1. By setting up a pressure-resistant support device, this utility model can effectively improve the external wear resistance of the cable by combining the tensile mesh layer and the protective tube shell during cable protection operations. At the same time, the insulation layer, support layer and cold-proof filling layer are all made of cold-resistant and heat-insulating materials, which can effectively improve the external cold resistance of the cable. Furthermore, the pressure-resistant retaining rings inside the multiple support layers can support various external pressures through elastic deformation, which can effectively improve the overall external pressure resistance of the cable and also improve the subsequent service life of the cable. 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 3This is an exploded view of the compressive support device of this utility model;

[0019] Figure 4 This is a schematic diagram of the compressive support device of this utility model.

[0020] In the diagram: 1-Cable, 2-Cold-proof filling layer, 3-Compression-resistant support device, 4-Tension mesh layer, 5-Protective pipe shell, 6-Abrasion-resistant mesh layer, 31-Limiting protrusion, 32-Insulation layer, 33-Flame-retardant layer, 34-Compression-resistant retaining ring, 35-Support layer, 36-Limiting groove. 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 PVC cable protection pipe with cold-resistant function, including a cable 1 for support, and a cold-proof filling layer 2 for cold protection located on the outside of the cable 1.

[0023] Compression-resistant support device 3 is fixedly installed on the outer end face of the cold-proof filling layer 2. The compression-resistant support device 3 is used to protect and resist compression of the cable 1.

[0024] The protective tube housing 5 is fixedly installed outside the pressure-resistant support device 3, and a wear-resistant mesh layer 6 is provided on the outer end face of the protective tube housing 5, and a tensile mesh layer 4 is provided on the inner end face of the protective tube housing 5. The protective tube housing 5 is used to provide wear-resistant protection for the outside of the cable 1.

[0025] The compression support device 3 includes a support layer 35. The outer end face of the support layer 35 is provided with equidistant limiting grooves 36, and a compression retaining ring 34 is fixedly snapped into the inner end face of the limiting grooves 36. The outer end face of the support layer 35 is provided with a flame retardant layer 33, and equidistant limiting protrusions 31 are provided on the outer side of the flame retardant layer 33. The outer end face of the flame retardant layer 33 is fixedly provided with a heat insulation layer 32 through the limiting protrusions 31.

[0026] The inner end face of the insulation layer 32 is hollow, which can effectively improve the external insulation performance of the cable 1, thereby reducing the impact of high temperature and low temperature on the cable 1.

[0027] The tensile mesh layer 4 is made of nylon, and the insulation layer 32 is made of polyisobutylene. The tensile mesh layer 4 can effectively improve the wear resistance of the inside of the protective tube shell 5.

[0028] The material of the cold-proof filling layer 2 is polyurethane foam, which can effectively improve the cold resistance of the inside of the cable 1.

[0029] The flame-retardant layer 33 is made of flame-retardant polyvinyl chloride, and the support layer 35 is made of heat-resistant polyethylene. When the cable 1 is exposed to fire, the flame-retardant layer 33 can perform fire-resistant and flame-retardant operation on the outside of the cable 1, thereby improving the flame-retardant and fire-resistant performance of the cable 1. At the same time, the support layer 35 and the flame-retardant layer 33 are both made of heat-insulating and fire-resistant materials, which can further improve the flame-retardant performance of the cable 1.

[0030] Working principle: When protecting cable 1, the double wear-resistant protection of the tensile mesh layer 4 and the protective tube shell 5 can effectively improve the wear resistance of the cable 1. At the same time, the heat insulation layer 32, the support layer 35 and the cold-proof filling layer 2 are all cold-resistant and heat-insulating materials, which can effectively improve the cold resistance of the cable 1. In addition, the pressure-resistant retaining rings 34 inside the multiple sets of support layers 35 can support various external pressures through elastic deformation, thereby improving the overall pressure resistance of the cable 1 and thus improving the service life of the cable 1.

[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 PVC cable protection pipe with cold-resistant function, comprising a cable (1) for support, and a cold-resistant filling layer (2) for cold protection disposed outside the cable (1), characterized in that: A pressure-resistant support device (3) is fixedly installed on the outer end face of the cold-proof filling layer (2). The pressure-resistant support device (3) is used to protect and resist the pressure of the cable (1). The protective tube housing (5) is fixedly installed outside the pressure-resistant support device (3), and a wear-resistant mesh layer (6) is provided on the outer end face of the protective tube housing (5), and a tensile mesh layer (4) is provided on the inner end face of the protective tube housing (5). The protective tube housing (5) is used to provide wear-resistant protection for the outside of the cable (1).

2. The PVC cable protection pipe with cold-resistant function according to claim 1, characterized in that: The pressure-resistant support device (3) includes a support layer (35). The outer end face of the support layer (35) is provided with equidistant positioning grooves (36), and a pressure-resistant retaining ring (34) is fixedly snapped into the inner end face of the positioning groove (36). The outer end face of the support layer (35) is provided with a flame-retardant layer (33), and equidistant positioning protrusions (31) are provided on the outer side of the flame-retardant layer (33). The outer end face of the flame-retardant layer (33) is fixedly provided with a heat insulation layer (32) through the positioning protrusions (31).

3. A PVC cable protection pipe with cold-resistant function according to claim 2, characterized in that: The inner end face of the insulation layer (32) is hollow.

4. A PVC cable protection pipe with cold-resistant function according to claim 2, characterized in that: The tensile mesh layer (4) is made of nylon, and the thermal insulation layer (32) is made of polyisobutylene.

5. A PVC cable protection pipe with cold-resistant function according to claim 2, characterized in that: The material of the cold-proof filling layer (2) is polyurethane foam.

6. A PVC cable protection pipe with cold-resistant function according to claim 2, characterized in that: The flame-retardant layer (33) is made of flame-retardant polyvinyl chloride, and the support layer (35) is made of heat-resistant polyethylene.

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