Composite cable and preparation method thereof

Abstract

The invention belongs to the field of cable production, and particularly relates to a composite cable and a preparation method thereof. A filling material is arranged outside the plurality of cable cores; a protective sleeve is mounted outside the filling material; a pair of functional sleeves is mounted outside the protective sleeve; a plurality of pits are formed in the outer side wall of the functional sleeve; the pit hole is filled with a fire extinguishing material; the fire extinguishing material is prepared from perfluorohexanone fire extinguishing microcapsules; the exterior of the pair of functional sleeves is coated with an isolating membrane; the isolating membrane is spirally wound outside the functional sleeve; by means of the structure, when a small ignition point occurs near the cable and the cable is grilled, the fire extinguishing gas can be rapidly sprayed out to extinguish a fire source, and the protection effect on the cable is improved.

Description

Technical Field

[0001] The invention belongs to the field of cable production, and specifically relates to a composite cable and a preparation method thereof. Background Art

[0002] Composite cables are composed of two or more cables of the same or different types, usually consisting of a signal line and one or more power lines. They are widely used in various occasions that require simultaneous transmission of power and signals.

[0003] Existing composite cables mostly protect the internal cable core by using a protective sheath of insulating material and a filling layer with a low thermal conductivity coefficient, so that the cable core can still operate stably for a period of time when a fire occurs for the operation of systems such as fire alarms. However, when a small fire source appears near the cable, the burning flame is not enough to trigger the fire alarm system in the building, but will continue to burn the cable, causing the middle part of the cable to continue to be heated and damaged, making it difficult to trigger the fire alarm when the fire becomes larger.

[0004] To this end, the present invention provides a composite cable and a preparation method thereof. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is: the composite cable and its preparation method described in the present invention include multiple cable cores; the outside of the multiple cable cores is provided with filling materials; the outside of the filling materials is installed with protective sleeves; the outside of the protective sleeves is installed with a pair of functional sleeves; the outer wall of the functional sleeves is provided with multiple pits; the inside of the pits is 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 burns the cable, the fire extinguishing gas can be quickly sprayed out to extinguish the fire source, thereby improving the protection effect of the cable.

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

[0008] Preferably, the functional sleeve is made of polyethylene material, which has good toughness and corrosion resistance; the functional sleeve is manufactured using polyethylene material to reduce the impact of the functional sleeve on the bending and turning of the cable during layout.

[0009] Preferably, the isolation membrane is made of polyvinyl chloride, which has good flexibility and barrier properties. The functional sleeve is manufactured using polyvinyl chloride material, and the flexibility of the functional sleeve can be used to reduce the occurrence of water vapor entering the pit and affecting the fire extinguishing materials due to the rupture of the functional sleeve when the cable is bent.

[0010] Preferably, a composite cable preparation method is characterized in that: the preparation method comprises the following specific steps:

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

[0012] S12, combining the cable core with the filling material to ensure the roundness and stability of the cable;

[0013] S13, using an extruder to evenly coat the protective cover material on the outside of the cable core and the filling material;

[0014] S14, placing the functional sleeve on the outside of the protective sleeve to complete the connection;

[0015] S15, filling the fire extinguishing material into the pits on the surface of the functional sleeve;

[0016] S16. Use an isolation film to cover the functional sleeve.

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

[0018] S2, prepare molds of corresponding shapes and hot presses;

[0019] S21, heating the material to a corresponding temperature and placing it into a mold;

[0020] S22, forming the functional sleeve by using a hot press machine in conjunction with a mold.

[0021] Preferably, the connection steps of the functional set in S14 are as follows:

[0022] S3, placing a pair of functional sleeves on both sides of the protective sleeve, and making the pair of functional sleeves fit each other;

[0023] S31, using a hot melt device to melt and combine the contacting parts of a pair of functional sleeves.

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

[0025] S4. Fill the fire extinguishing materials evenly into the holes on the functional sleeve;

[0026] S41. Drip a binder into the pit to combine the fire extinguishing material microcapsules into a whole in the pit to prevent the fire extinguishing material from leaking out.

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

[0028] S5, using a conveying mechanism to move the functional sleeve wrapped around the cable core at a uniform speed, and using a winding machine to uniformly wind the isolation film around the functional sleeve as the center, so that the isolation film is uniformly wrapped around the outside of the functional sleeve in a spiral shape;

[0029] S51. After the coating is completed, the isolation film is heated to melt the isolation film to form an integral structure to improve the sealing performance.

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

[0031] 1. The composite cable and preparation method thereof described in the present invention, through the arrangement of cable core, filling material, protective cover, functional cover, pits and fire extinguishing material, can quickly spray out fire extinguishing gas to extinguish the fire source when a small fire point appears near the cable and burns the cable, thereby improving the protection effect of the cable.

[0032] 2. The composite cable and preparation method thereof described in the present invention blocks the ports of multiple holes through an isolation membrane, thereby reducing the occurrence of moisture in the external air entering the holes and affecting the fire extinguishing materials, and reducing the occurrence of the fire extinguishing materials becoming difficult to function due to moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] Figure 1 It is a stereogram in the present invention;

[0035] Figure 2 It is a structural schematic diagram of the functional set in the present invention;

[0036] Figure 3 is a process flow chart of the preparation method of the present invention;

[0037] Figure 4 It is a processing flow chart of the functional sleeve in the present invention;

[0038] Figure 5 It is a connection flow chart of the functional set in the present invention;

[0039] Figure 6 is a filling flow chart of the fire extinguishing material in the present invention;

[0040] Figure 7 It is a coating flow chart of the isolation film in the present invention;

[0041] In the figure: 1. cable core; 12. filling material; 13. protective cover; 14. functional cover; 15. pit; 16. fire extinguishing material; 17. isolation membrane. DETAILED DESCRIPTION

[0042] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0043] like Figure 1 to Figure 2 As shown, a composite cable described in an embodiment of the present invention comprises a plurality of cable cores 1; a filling material 12 is provided on the outside of the plurality of cable cores 1; a protective cover 13 is installed on the outside of the filling material 12; a pair of functional covers 14 are installed on the outside of the protective cover 13; a plurality of pits 15 are opened on the outer wall of the functional cover 14; a fire extinguishing material 16 is filled inside the pits 15; the fire extinguishing material 16 is made of perfluorohexanone fire extinguishing microcapsules; when working, when a small fire source appears near the cable, the middle part of the cable will be continuously roasted, so that the fire extinguishing material 16 is heated to the reaction temperature, and a large amount of fire extinguishing gas will be generated when the fire extinguishing material 16 reacts, and the fire extinguishing gas will be ejected from the port of the pit 15 and blown to the small fire source, isolating the oxygen near the small fire source, so that the fire source is extinguished due to lack of oxygen. Through the above structure, when a small fire point appears near the cable and roasts the cable, the fire extinguishing gas can be quickly ejected to extinguish the fire source, thereby improving the protection effect of the cable.

[0044] like Figure 1 to Figure 2 As shown, the outside of a pair of the functional sleeves 14 is covered with an isolation membrane 17; the isolation membrane 17 is spirally wound around the outside of the functional sleeve 14; the setting of the functional sleeve 14 can block the ports of multiple pits 15, reduce the occurrence of moisture in the external air entering the pits 15 to affect the fire extinguishing material 16, and reduce the occurrence of the fire extinguishing material 16 being damp and difficult to function.

[0045] like Figure 1 As shown, the functional sleeve 14 is made of polyethylene material, which has good toughness and corrosion resistance. The functional sleeve 14 is manufactured using polyethylene material to reduce the impact of the functional sleeve 14 on the bending and turning of the cable during layout.

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

[0047] like Figure 3 As shown, a composite cable preparation method according to an embodiment of the present invention has the following specific steps:

[0048] S1. The cable core 1 and the functional sleeve 14 are produced and processed separately, and other materials are prepared;

[0049] S12, combining the cable core 1 with the filling material 12 to ensure the roundness and stability of the cable;

[0050] S13, using an extruder to evenly coat the protective cover 13 material on the outside of the cable core 1 and the filling material 12;

[0051] S14, putting the functional cover 14 on the outside of the protective cover 13 to complete the connection;

[0052] S15, filling the fire extinguishing material 16 into the pit 15 on the surface of the functional sleeve 14;

[0053] S16, using the isolation film 17 to cover the functional sleeve 14.

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

[0055] S2, prepare molds of corresponding shapes and hot presses;

[0056] S21, heating the material to a corresponding temperature and placing it into a mold;

[0057] S22, forming the functional cover 14 by using a hot press machine in conjunction with a mold.

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

[0059] S3, putting a pair of functional sleeves 14 on both sides of the protective sleeve 13, and making the pair of functional sleeves 14 fit each other;

[0060] S31, using a hot melt device to melt and combine the contacting parts of a pair of functional sleeves 14.

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

[0062] S4, evenly filling the fire extinguishing material 16 into the hole 15 on the functional sleeve 14;

[0063] S41, dripping a binder into the pit 15, so that the microcapsules of the fire extinguishing material 16 are combined into a whole in the pit 15 to prevent the fire extinguishing material 16 from leaking out.

[0064] like Figure 7 As shown, the coating steps of the isolation film 17 in S16 are as follows:

[0065] S5, using a conveying mechanism to move the functional sleeve 14 wrapped around the cable core at a uniform speed, and using a winding machine to uniformly wind the isolation film 17 around the functional sleeve 14, so that the isolation film 17 is uniformly wrapped around the outside of the functional sleeve 14 in a spiral shape;

[0066] S51, after the coating is completed, the isolation film 17 is heated to melt the isolation film 17 to form an integral structure, thereby improving the sealing performance.

[0067] During operation, when a small fire source appears near the cable, the middle part of the cable will be continuously roasted, 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 will be generated, and the fire extinguishing gas will be ejected from the port of the pit 15 and blown toward the small fire source, isolating the oxygen near the small fire source and extinguishing the fire source due to lack of oxygen.

[0068] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A composite cable, comprising a cable core (1); characterized in that: A filling material (12) is provided outside the plurality of cable cores (1); a protective cover (13) is installed outside the filling material (12); a pair of functional covers (14) are installed outside the protective cover (13); a plurality of holes (15) are provided on the outer side wall of the functional cover (14); a fire extinguishing material (16) is filled inside the holes (15); the fire extinguishing material (16) is made of perfluorohexanone fire extinguishing microcapsules.

2. A composite cable according to claim 1, characterized in that: The outside 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 sleeve (14).

3. A composite cable according to claim 2, characterized in that: The functional sleeve (14) is made of polyethylene and has good toughness and corrosion resistance.

4. A composite cable according to claim 3, characterized in that: The isolation film (17) is made of polyvinyl chloride and has good flexibility and barrier properties.

5. A method for preparing a composite cable, the method being applicable to a composite cable as claimed in claims 1 to 4, characterized in that: The specific steps of the preparation method are as follows: S1, respectively producing and processing the cable core (1) and the functional sleeve (14), and preparing other materials; S12, combining the cable core (1) and the filling material (12) to ensure the roundness and stability of the cable after being formed; S13, using an extruder to evenly coat the protective sheath (13) material on the outside of the cable core (1) and the filling material (12); S14, putting the functional sleeve (14) on the outside of the protective sleeve (13) to complete the connection; S15, filling the fire extinguishing material (16) into the pit (15) on the surface of the functional sleeve (14); S16, using an isolation film (17) to cover the functional sleeve (14).

6. A method for preparing a composite cable according to claim 5, characterized in that: The specific steps of processing the functional sleeve (14) in S1 are as follows: S2, prepare molds of corresponding shapes and hot presses; S21, heating the material to a corresponding temperature and placing it into a mold; S22, using a hot press machine in conjunction with a mold to shape the functional sleeve (14).

7. A method for preparing a composite cable according to claim 6, characterized in that: The connection steps of the functional set (14) in S14 are as follows: S3, sleeve a pair of functional sleeves (14) on both sides of the protective sleeve (13), and make the pair of functional sleeves (14) fit each other; S31, using a hot-melt device to melt and combine the contacting parts of a pair of functional sleeves (14).

8. A method for preparing a composite cable according to claim 7, characterized in that: The steps of filling the fire extinguishing material (16) in S15 are as follows: S4, evenly filling the fire extinguishing material (16) into the hole (15) on the functional sleeve (14); S41, dripping a binder into the pit (15) to bind the microcapsules of the fire extinguishing material (16) into a whole in the pit (15) to prevent the fire extinguishing material (16) from leaking out.

9. A method for preparing a composite cable according to claim 8, characterized in that: The coating step of the isolation film (17) in S16 is as follows: S5, using a conveying mechanism to move the functional sleeve (14) wrapped around the cable core at a uniform speed, and using a winding machine to uniformly wind the isolation film (17) around the functional sleeve (14), so that the isolation film (17) is uniformly wrapped around the outside of the functional sleeve (14) in a spiral shape; S51, after the coating is completed, the isolation film (17) is heated to melt the isolation film (17) to form an integral structure, thereby improving the sealing performance.

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