CPVC (Chlorinated Polyvinyl Chloride) cable protection pipe with fire extinguishing capability

Abstract

The utility model discloses a CPVC (Chlorinated Polyvinyl Chloride) cable protection pipe with fire extinguishing capacity. The CPVC cable protection pipe comprises a pipe body and an end cover, a plurality of cable channels are arranged in the pipe body in the circumferential direction at intervals, and a plurality of loading channels are arranged around the peripheries of the cable channels in the circumferential direction at intervals. The loading channels and the cable channels are in one-to-one correspondence and are communicated with each other; an air bag is arranged in the loading channel; fire extinguishing gas capable of extinguishing fire is arranged in the air bag; the end covers are arranged corresponding to the two ends of the pipe body; the end cover is in threaded connection with the pipe body and is provided with a sealing position for synchronously sealing the open end of each loading channel; an avoiding window is formed in the end cover; and at the position of the sealing cover, the open end of each cable channel is arranged corresponding to the avoiding window. When the interior of the pipe body is on fire, a fire source can be extinguished in time so as to prevent fire from spreading, the safety of the cable in use is improved, and the protection requirement of the cable is effectively met.

Description

Technical Field

[0001] The utility model relates to the technical field of CPVC pipes, in particular to a CPVC cable protection pipe with fire extinguishing capability. Background Art

[0002] Cable protection tubes play an important role in power systems and communication networks. They protect cables from physical damage and environmental factors. CPVC (chlorinated polyvinyl chloride) tubes are widely used in cable protection due to their corrosion resistance and high temperature resistance. When a cable catches fire during use, conventional CPVC tubes cannot effectively prevent the spread of the fire. The fire may spread along the cable, causing greater losses. Therefore, it is necessary to design a CPVC cable protection tube that can extinguish the fire in time to meet the protection needs of the cable. Utility Model Content

[0003] In view of the above-mentioned technical problems, the purpose of the utility model is to propose a CPVC cable protection tube with fire extinguishing capability, which can promptly extinguish the fire source when a fire occurs inside the tube body to prevent the fire from spreading, thereby improving the safety of the cable when in use and effectively meeting the protection needs of the cable.

[0004] The technical solution of the utility model is achieved as follows: a CPVC cable protection tube with fire extinguishing capability, comprising a tube body and an end cover;

[0005] The tube body has a plurality of cable channels spaced apart along the circumferential direction inside, and a plurality of loading channels spaced apart along the circumferential direction around the outer periphery of the cable channels; the loading channels correspond to the cable channels one by one, and the two are interconnected; an air bag is provided in the loading channel; and a fire extinguishing gas capable of extinguishing a fire is provided in the air bag

[0006] The end covers are arranged at the two ends of the tube body; the end covers are threadedly connected to the tube body and have a covering position for synchronously covering the open ends of each loading channel; an escape window is provided on the end cover; at the covering position, the open end of each cable channel is arranged corresponding to the escape window.

[0007] Furthermore, a first heat dissipation space is formed inside the tube body between the cable channels; and a heat dissipation hole communicating with the first heat dissipation space is provided on the outer wall of the tube body.

[0008] Furthermore, a second heat dissipation space is formed inside the tube body between the loading channels; and the heat dissipation hole is connected to the second heat dissipation space.

[0009] Furthermore, the airbag bag includes a plurality of bag bodies arranged linearly; two adjacent bag bodies are flexibly connected; and the fire extinguishing gas is arranged in each bag body.

[0010] Furthermore, the fire extinguishing gas is argon or heptafluoropropane.

[0011] Furthermore, the cross section of the loading channel is an elliptical structure; the airbag bag is connected to the loading channel with a clearance fit.

[0012] Furthermore, in the covering position, the end of each cable channel extends into the avoidance window, and the end surface of the cable channel is flush with the outer surface of the end cover facing away from the tube body.

[0013] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0014] 1. The utility model arranges a loading channel connected to the cable channel around the periphery of the cable channel. An airbag with fire extinguishing gas is inserted in the loading channel. When the cable channel is on fire, the airbag is burned to release the fire extinguishing gas into the cable channel, thereby extinguishing the fire in time to prevent the fire from spreading, improve the safety of the cable when in use, and effectively meet the protection needs of the cable.

[0015] 2. The utility model uses the heat dissipation holes, the first heat dissipation space, the second heat dissipation space, etc. to allow airflow to flow inside and outside the tube body through the heat dissipation holes to dissipate the heat generated during cable operation. The air flow path and the cable channel are isolated from each other to prevent dust in the air from entering the cable channel, thereby effectively protecting the cable and having strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the overall structure of the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure;

[0019] Figure 3 for Figure 1 A cross-sectional view cut along the length direction of the tube body;

[0020] Figure 4 for Figure 1 Exploded view of;

[0021] Figure 5 for Figure 1 Schematic diagram of the internal structure;

[0022] Figure 6 It is a schematic diagram of the assembly of the airbag and the tube body of the utility model;

[0023] Figure 7 is a schematic diagram of the cross-sectional structure of the tube body;

[0024] Among them: 1. tube body; 11. cable channel; 12. loading channel; 13. connecting port; 14. heat dissipation hole; 15. first heat dissipation space; 16. second heat dissipation space; 2. end cover; 21. cover plate; 211. avoidance window; 3. airbag bag; 31. bag body. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0026] like Figure 1-7 The present embodiment shows a CPVC cable protection tube with fire extinguishing capability, which is made of CPVC material as a whole, and the cable is inserted into the cable protection tube for protection. The cable protection tube includes a tube body 1 and an end cap 2. The tube body 1 has a designed length. A plurality of cable channels 11 are arranged at intervals along the circumferential direction inside the tube body 1, and a plurality of loading channels 12 are arranged at intervals along the circumferential direction around the outer periphery of the cable channels 11 inside the tube body 1. The cable channels 11 and the loading channels 12 both extend along the length direction of the tube body 1. The cable channels 11 and the loading channels 12 correspond to each other one by one, and the cable channels 11 and the loading channels 12 at the corresponding positions are connected through a connecting port 13. An airbag 3 is inserted in the aforementioned loading channel 12. The airbag 3 is filled with fire extinguishing gas that can extinguish fire. In this embodiment, the airbag 3 includes a plurality of bag bodies 31 arranged linearly. Two adjacent bag bodies 31 are flexibly connected by a connecting rope or a connecting belt, so that the airbag 3 is a string structure. The fire extinguishing gas is filled in each bag body 31. In this embodiment, the fire extinguishing gas is preferably argon or heptafluoropropane. The airbag bag 3 is made of rubber.

[0027] When in use, the cables are inserted into the cable channel 11 for protection. When the cables catch fire, the fire source burns through the air bag through the aforementioned communication port 13, so that the fire extinguishing gas enters the cable channel 11 through the communication port 13 to extinguish the fire source.

[0028] In the specific structural design, each loading channel 12 is formed on the inner peripheral wall of the tube body 1, and the cable channel 11 corresponding to the loading channel 12 is formed on the side wall of the loading channel 12. Through the above structural design, a first heat dissipation space 15 is formed inside the tube body 1 between each cable channel 11, and a second heat dissipation space 16 is formed inside the tube body 1 between each loading channel 12. The above-mentioned first heat dissipation space 15 and the second heat dissipation space 16 are connected. A heat dissipation hole 14 connected to the first heat dissipation space 15 is processed on the outer wall of the tube body 1, and the heat dissipation hole 14 is also connected to the second heat dissipation space 16. The above-mentioned heat dissipation hole 14 is a circular hole or a strip hole, and is arranged at intervals along the length direction of the tube body 1. Air flow can enter and exit the tube body 1 through the heat dissipation hole 14, so as to enter and exit the first heat dissipation space 15 and the second heat dissipation space 16, so that the inside of the tube body 1 can be cooled.

[0029] The cross section of the aforementioned loading channel 12 is an elliptical structure, which is adapted to the shape of the airbag bag 3. When the airbag bag 3 is inserted into the loading channel 12, it is connected with the loading channel 12 with a clearance fit.

[0030] In this embodiment, end caps 2 are arranged corresponding to the two ends of the aforementioned tube body 1. The end caps 2 are threadedly connected to the ends of the tube body 1 and have a capping position for synchronously capping the open ends of each of the loading channels 12. The end cap 2 has a capping plate 21. In the aforementioned capping position, the capping plate 21 covers the end surface of the tube body 1 so as to be able to cap the open ends of all the loading channels 12. An escape window 211 is processed on the capping plate 21 of the end cap 2 corresponding to the cable channel 11. In the aforementioned capping position, the open ends of each cable channel 11 are arranged corresponding to the escape window 211, so that the cable channel 11 can be connected to the outside through the escape window 211, and then the cable can be inserted into the cable channel 11 through the escape window 211.

[0031] In this embodiment, the end cover 2 is made of metal material or plastic.

[0032] In this embodiment, the end of the cable channel 11 protrudes outward from the end of the loading channel 12, so that in the aforementioned capping position, the end of each cable channel 11 extends into the avoidance window 211, and the end surface of the cable channel 11 is flush with the outer surface of the end cover 2 facing away from the tube body 1. Through the above structural design, when a plurality of cable protection tubes are butted end to end, the end covers 2 of adjacent cable protection tubes are butted against each other, thereby making the ends of each cable channel 11 butted against each other without a large gap, so as to meet the insertion requirements of the cables.

[0033] During specific assembly, the airbag bag 3 is inserted into each loading channel 12, and then the end cap 2 is threadedly connected to the two ends of the tube body 1 to close the two ends of the loading channel 12. When in use, the cables are inserted into each cable channel 11 to protect the cables. The air flows in and out of the first heat dissipation space 15 and the second heat dissipation space 16 through the heat dissipation holes 14 to flow inside and outside the tube body 1, thereby dissipating the heat generated during the operation of the cable. The air flow path and the cable channel 11 are isolated from each other to prevent dust in the air from entering the cable channel 11, so as to effectively protect the cable. When the cable catches fire, the airbag bag 3 is burned to release the fire extinguishing gas and enter the cable channel 11, so as to extinguish the fire source in time to prevent the fire from spreading, improve the safety of the cable when in use, and effectively meet the protection needs of the cable.

[0034] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A CPVC cable protection tube with fire extinguishing capability, comprising a tube body and an end cap; characterized in that: The tube body has a plurality of cable channels spaced apart along the circumferential direction inside, and a plurality of loading channels spaced apart along the circumferential direction around the outer periphery of the cable channels; the loading channels correspond to the cable channels one by one, and the two are interconnected; an air bag is provided in the loading channel; and a fire extinguishing gas capable of extinguishing a fire is provided in the air bag The end covers are arranged at the two ends of the tube body; the end covers are threadedly connected to the tube body and have a covering position for synchronously covering the open ends of each loading channel; an escape window is provided on the end cover; at the covering position, the open end of each cable channel is arranged corresponding to the escape window.

2. The CPVC cable protection tube with fire extinguishing capability according to claim 1, characterized in that: A first heat dissipation space is formed inside the tube body between the cable channels; and a heat dissipation hole communicating with the first heat dissipation space is arranged on the outer wall of the tube body.

3. The CPVC cable protection tube with fire extinguishing capability according to claim 2, characterized in that: A second heat dissipation space is formed inside the tube body between the loading channels; and the heat dissipation hole is communicated with the second heat dissipation space.

4. The CPVC cable protection tube with fire extinguishing capability according to claim 1, characterized in that: The airbag bag comprises a plurality of bag bodies arranged linearly; two adjacent bag bodies are flexibly connected; and the fire extinguishing gas is arranged in each bag body.

5. The CPVC cable protection tube with fire extinguishing capability according to claim 1, characterized in that: The fire extinguishing gas is argon or heptafluoropropane.

6. The CPVC cable protection tube with fire extinguishing capability according to claim 1, characterized in that: The cross section of the loading channel is an elliptical structure; the airbag bag is connected to the loading channel with a clearance fit.

7. The CPVC cable protection tube with fire extinguishing capability according to claim 1, characterized in that: In the covering position, the end of each cable channel extends into the avoidance window, and the end surface of the cable channel is flush with the outer surface of the end cover facing away from the tube body.

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