A composite cable and its preparation method

Abstract

This invention belongs to the field of cable manufacturing, specifically a composite cable and its preparation method, comprising multiple cable cores; a filling material is provided on the outside of the multiple cable cores; a protective sleeve is installed on the outside of the filling material; a pair of functional sleeves are installed on the outside of the protective sleeve; multiple pits are formed on the outer wall of the functional sleeves; the pits are filled with fire extinguishing material; the fire extinguishing material is made of perfluorohexanone fire extinguishing microcapsules; an isolation membrane is wrapped around the outside of the pair of functional sleeves; the isolation membrane is spirally wound around the outside of the functional sleeves; through the above structure, when a small fire point appears near the cable and heats the cable, fire extinguishing gas can be quickly sprayed out to extinguish the fire source, improving the protection effect of the cable.

Description

Technical Field

[0001] This invention belongs to the field of cable manufacturing, specifically a composite cable and its preparation method. Background Technology

[0002] Composite cables are made up of two or more cables of the same or different types. They typically consist of one signal line and one or more power lines and are widely used in various applications where power and signals need to be transmitted simultaneously.

[0003] Existing composite cables mostly use heat-insulating protective sleeves and filling layers with low thermal conductivity to protect the internal cable core, allowing the cable core to continue to operate stably for a period of time during a fire for the operation of fire alarm and other systems. However, when a small fire source appears near the cable, the flames are not enough to trigger the fire alarm system in the building, but they will continue to heat the cable, causing the middle of the cable to be damaged by continuous heat, making it difficult to trigger the fire alarm when the fire grows larger.

[0004] Therefore, the present invention provides a composite cable and a method for preparing the same. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: A composite cable and its preparation method, comprising multiple cable cores; a filling material is provided on the outside of the multiple cable cores; a protective sleeve is installed on the outside of the filling material; a pair of functional sleeves are installed on the outside of the protective sleeves; multiple pits are formed on the outer wall of the functional sleeves; the pits are filled with fire extinguishing material; the fire extinguishing material is made of perfluorohexanone fire extinguishing microcapsules; through the above structure, when a small fire point appears near the cable and heats the cable, fire extinguishing gas can be quickly sprayed out to extinguish the fire source, thereby improving the protection effect on the cable.

[0007] Preferably, the outer surface of a pair of functional sleeves is covered with an isolation membrane; the isolation membrane is spirally wound around the outside of the functional sleeves; through the above structure, the ports of multiple pits can be blocked, reducing the occurrence of moisture in the outside air entering the pits and affecting the fire extinguishing material, and reducing the occurrence of the fire extinguishing material becoming damp and unable to function.

[0008] Preferably, the functional sleeve is made of polyethylene, which has good toughness and corrosion resistance; manufacturing the functional sleeve with polyethylene material reduces the impact of the functional sleeve on the bending and turning of the cable during cable laying.

[0009] Preferably, the isolation membrane is made of polyvinyl chloride, which has good flexibility and barrier properties; by manufacturing the functional sleeve using polyvinyl chloride material, the flexibility of the functional sleeve can reduce the occurrence of water vapor entering the pit and affecting the fire extinguishing material when the cable is bent.

[0010] Preferably, a method for manufacturing composite cables is characterized by the following specific steps:

[0011] S1. Produce and process the cable core and functional sleeve separately, and prepare other materials;

[0012] S12. Combine the cable core with the filler material to ensure the roundness and stability of the cable after it is made;

[0013] S13. Using an extruder, the protective sheath material is evenly coated onto the outside of the cable core and the filling material;

[0014] S14. Place the functional sleeve over the outside of the protective sleeve to complete the connection;

[0015] S15. Fill the pits on the surface of the functional sleeve with fire extinguishing material;

[0016] S16. Use a release liner to cover the functional sleeve.

[0017] Preferably, the specific processing steps of the functional sleeve in S1 are as follows:

[0018] S2. Prepare molds of the corresponding shapes and hot presses;

[0019] S21. Heat the material to the corresponding temperature and then place it into the mold;

[0020] S22. Use a hot press and mold to form the functional sleeve.

[0021] Preferably, the connection step of the functional sleeve in S14 is as follows:

[0022] S3. Place a pair of functional sleeves on both sides of the protective sleeve and make the pair of functional sleeves fit together;

[0023] S31. Using a heat-melting device, the contact parts between a pair of functional sleeves are melted and joined together.

[0024] Preferably, the filling step of the fire extinguishing material in S15 is as follows:

[0025] S4. Fill the holes on the functional sleeve evenly with the fire extinguishing material;

[0026] S41. Drip a binder into the pit to bind the fire extinguishing material microcapsules into a whole within the pit, preventing the fire extinguishing material from leaking out.

[0027] Preferably, the coating step of the separator in S16 is as follows:

[0028] S5. The conveying mechanism is used to move the functional sleeve containing the cable core at a constant speed, and the winding machine is used to wind the isolation film at a constant speed with the functional sleeve as the center, so that the isolation film is evenly wrapped around the outside of the functional sleeve in a spiral shape.

[0029] S51. After the coating is completed, the separator is heated to melt it and form an integral structure, thereby improving the sealing performance.

[0030] The beneficial effects of this invention are as follows:

[0031] 1. The composite cable and its preparation method described in this invention, through the setting of cable core, filling material, protective sleeve, functional sleeve, pit, and fire extinguishing material, can quickly spray fire extinguishing gas to extinguish the fire source when a small fire point appears near the cable and heats the cable, thereby improving the protection effect of the cable.

[0032] 2. The composite cable and its preparation method described in this invention use an insulating membrane to block the ports of multiple pits, reducing the impact of moisture from the outside air on the fire extinguishing material and preventing the fire extinguishing material from becoming damp and failing to function. Attached Figure Description

[0033] The invention will now be further described with reference to the accompanying drawings.

[0034] Figure 1 This is a perspective view of the present invention;

[0035] Figure 2 This is a schematic diagram of the structure of the functional sleeve in this invention;

[0036] Figure 3 This is a flowchart of the preparation method in this invention;

[0037] Figure 4 This is a flowchart of the processing of the functional sleeve in this invention;

[0038] Figure 5 This is a flowchart illustrating the connection process of the functional sleeve in this invention;

[0039] Figure 6 This is a flowchart of the filling process of the fire extinguishing material in this invention;

[0040] Figure 7 This is a flowchart illustrating the coating process of the isolation membrane in this invention;

[0041] In the diagram: 1. Cable core; 12. Filler material; 13. Protective sleeve; 14. Functional sleeve; 15. Pit; 16. Fire extinguishing material; 17. Isolation membrane. Detailed Implementation

[0042] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0043] like Figures 1 to 2 As shown in the embodiment of the present invention, a composite cable includes multiple cable cores 1; the multiple cable cores 1 are provided with a filling material 12 on the outside; a protective sleeve 13 is installed on the outside of the filling material 12; a pair of functional sleeves 14 are installed on the outside of the protective sleeve 13; multiple pits 15 are formed on the outer wall of the functional sleeves 14; the pits 15 are filled with fire extinguishing material 16; the fire extinguishing material 16 is made of perfluorohexanone fire extinguishing microcapsules; during operation, when a small fire source appears near the cable, the middle part of the cable will be continuously heated, thereby causing the fire extinguishing material 16 to heat up to the reaction temperature. When the fire extinguishing material 16 reacts, a large amount of fire extinguishing gas is generated. The fire extinguishing gas will be sprayed out from the port of the pit 15 and blown towards the small fire source, isolating the oxygen near the small fire source, causing the fire source to extinguish due to lack of oxygen. Through the above structure, when a small fire point appears near the cable and heats the cable, the fire extinguishing gas can be sprayed out quickly to extinguish the fire source, improving the protection effect of the cable.

[0044] like Figures 1 to 2 As shown, the outer surface of a pair of functional sleeves 14 is covered with an isolation membrane 17; the isolation membrane 17 is spirally wound around the outside of the functional sleeves 14; by setting the functional sleeves 14, the ports of multiple pits 15 can be blocked, reducing the occurrence of moisture in the outside air entering the pits 15 and affecting the fire extinguishing material 16, and reducing the occurrence of the fire extinguishing material 16 becoming damp and unable to function.

[0045] like Figure 1 As shown, the functional sleeve 14 is made of polyethylene, which has good toughness and corrosion resistance; by manufacturing the functional sleeve 14 with polyethylene material, the influence of the functional sleeve 14 on the bending and turning of the cable during the cable layout is reduced.

[0046] like Figure 1 As shown, the isolation membrane 17 is made of polyvinyl chloride, which has good flexibility and barrier properties. The functional sleeve 14 is manufactured by using polyvinyl chloride material. The flexibility of the functional sleeve 14 can reduce the occurrence of water vapor entering the pit 15 and affecting the fire extinguishing material 16 when the cable is bent.

[0047] like Figure 3 As shown in the embodiment of the present invention, a method for preparing a composite cable includes the following specific steps:

[0048] S1. Produce and process the cable core 1 and the functional sleeve 14 separately, and prepare other materials;

[0049] S12. Combine the cable core 1 with the filler material 12 to ensure the roundness and stability of the cable after it is made into a cable;

[0050] S13. The protective sleeve 13 material is evenly wrapped around the outside of the cable core 1 and the filling material 12 by using an extruder;

[0051] S14. The functional sleeve 14 is fitted over the protective sleeve 13 to complete the connection;

[0052] S15. Fill the pits 15 on the surface of the functional sleeve 14 with the fire extinguishing material 16;

[0053] S16. Use the isolation membrane 17 to cover the functional sleeve 14.

[0054] like Figure 4 As shown, the specific processing steps of the functional sleeve 14 in S1 are as follows:

[0055] S2. Prepare molds of the corresponding shapes and hot presses;

[0056] S21. Heat the material to the corresponding temperature and then place it into the mold;

[0057] S22. Use a hot press and mold to form the functional sleeve 14.

[0058] like Figure 5 As shown, the connection steps of the functional sleeve 14 in S14 are as follows:

[0059] S3. Place a pair of functional sleeves 14 on both sides of the protective sleeve 13 and make the pair of functional sleeves 14 fit together.

[0060] S31. Using a heat-melting device, the contact portion between a pair of functional sleeves 14 is melted and joined together.

[0061] like Figure 6 As shown, the filling step of the fire extinguishing material 16 in S15 is as follows:

[0062] S4. Fill the holes 15 on the functional sleeve 14 evenly with the fire extinguishing material 16;

[0063] S41. Drip a binder into the pit 15 to bind the microcapsules of the extinguishing material 16 into a whole within the pit 15, so as to prevent the extinguishing material 16 from leaking out.

[0064] like Figure 7 As shown, the coating step of the isolation membrane 17 in S16 is as follows:

[0065] S5. The conveying mechanism is used to move the functional sleeve 14 containing the cable core at a constant speed, and the winding machine is used to wind the isolation film 17 at a constant speed with the functional sleeve 14 as the center, so that the isolation film 17 is evenly wrapped around the outside of the functional sleeve 14 in a spiral shape.

[0066] S51. After the coating is completed, the separator 17 is heated to melt the separator 17 to form an integral structure and improve the sealing performance.

[0067] When a small fire source appears near the cable during operation, the middle part of the cable will be continuously heated, causing the extinguishing material 16 to heat up to the reaction temperature. When the extinguishing material 16 reacts, a large amount of extinguishing gas will be generated. The extinguishing gas will be sprayed out from the port of the pit 15 and blown towards the small fire source, isolating the oxygen near the small fire source and extinguishing the fire source due to lack of oxygen.

[0068] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for manufacturing a composite cable, the composite cable comprising a plurality of cable cores (1); characterized in that: The outer surface of each of the multiple cable cores (1) is provided with a filling material (12); a protective sleeve (13) is installed on the outer surface of the filling material (12); a pair of functional sleeves (14) are installed on the outer surface of the protective sleeve (13); multiple pits (15) are opened on the outer side wall of the functional sleeve (14); the pits (15) are filled with fire extinguishing material (16); the fire extinguishing material (16) is made of perfluorohexanone fire extinguishing microcapsules; the outer surface of the pair of functional sleeves (14) is covered with an isolation membrane (17); the isolation membrane (17) is spirally wound around the outer surface of the functional sleeves (14); The specific steps for manufacturing this composite cable are as follows: S1. Produce and process the cable core (1) and the functional sleeve (14) separately, and prepare other materials; S12. Combine multiple cable cores (1) with filler material (12) to ensure the roundness and stability of the cable after cabling; S13. Use an extruder to evenly coat the protective sleeve (13) material onto the outside of the cable core (1) and the filling material (12); S14. Place the functional sleeve (14) over the outside of the protective sleeve (13) to complete the connection; S15. Fill the pits (15) on the surface of the functional sleeve (14) with fire extinguishing material (16); S16. Use a release film (17) to cover the functional sleeve (14); The specific processing steps for the functional sleeve (14) in S1 are as follows: S2, Prepare molds of the corresponding shape and hot presses; S21. Heat the material to the corresponding temperature and then place it into the mold; S22. Use a hot press and mold to form the functional sleeve (14); The connection steps of the functional sleeve (14) in S14 are as follows: S3, put a pair of functional sleeves (14) on both sides of the protective sleeve (13) and make the pair of functional sleeves (14) fit together; S31. Using a heat fusion device, the contact portion between a pair of functional sleeves (14) is melted and joined together; The filling steps of the fire extinguishing material (16) in S15 are as follows: S4, fill the fire extinguishing material (16) evenly into the pit (15) on the functional sleeve (14); S41. Drip a binder into the pit (15) to bond the fire extinguishing material (16) into the pit (15) to prevent the fire extinguishing material (16) from leaking out.

2. The method for preparing a composite cable according to claim 1, characterized in that: The functional sleeve (14) is made of polyethylene, which has good toughness and corrosion resistance.

3. The method for preparing a composite cable according to claim 1, characterized in that: The isolation membrane (17) is made of polyvinyl chloride and has good flexibility and barrier properties.

4. The method for preparing a composite cable according to claim 1, characterized in that: The covering steps of the isolation film (17) in S16 are as follows: S5, the functional sleeve (14) covering the cable core is moved at a constant speed by the conveying mechanism, and the isolation film (17) is wound at a constant speed with the functional sleeve (14) as the center by the winding machine, so that the isolation film (17) is evenly covered on the outside of the functional sleeve (14) in a spiral shape. S51. After the coating is completed, the separator (17) is heated to melt the separator (17) to form an integral structure and improve the sealing performance.

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