A high-pressure, high-flame-retardant, high-frequency digital communication cable

Abstract

The utility model discloses a high-pressure-resistant and high-flame-retardant high-frequency digital communication cable, which includes: an outer wire shell, a fireproof layer fixedly connected to the inner circumferential surface of the outer wire shell, a pressure-resistant layer fixedly connected to the inner circumferential surface of the fireproof layer, a heat-insulating layer fixedly connected to the inner circumferential surface of the pressure-resistant layer, and a buffer layer fixedly connected to the inner circumferential surface of the heat-insulating layer. By arranging the fireproof layer, the pressure-resistant layer, the heat-insulating layer, the buffer layer and the filling layer, a hollow hexagonal ring is used in the pressure-resistant layer, which can greatly absorb the force from the outside and play a good buffering effect, and also has good flame retardancy, blocks the heat from the outside, and fully protects the internal structure, and the filling layer is filled with a large number of polypropylene particles, and the fine particles can eliminate the internal stress when the internal structure produces the thermal expansion and contraction effect, thereby improving the transmission stability and transmission rate of the high-frequency signal.

Description

Technical Field

[0001] The utility model relates to the technical field of communication cables, in particular to a high-pressure-resistant, high-flame-retardant, high-frequency digital communication cable. Background Art

[0002] Communication cables are used to transmit telephone, telegraph, fax files, television and radio programs, data and other electrical signals. They are made of one or more insulated wires twisted together. Compared with overhead wires, communication cables have the advantages of large communication capacity, high transmission stability, good confidentiality, and less impact from natural conditions and external interference. As digital communication networks continue to develop in the direction of large capacity, high frequency and high speed, communication cables are widely used in the field of telecommunication.

[0003] In existing high-frequency digital communication cables, due to too many uncontrollable external factors, high-frequency digital communication cables are often subjected to external forces, heat and other energy shocks, which can easily cause damage to the cables. In addition, during the use of high-frequency digital communication cables, there will be thermal expansion and contraction effects inside the cables, which increases the internal pressure. The above situation will not only affect the stability of high-frequency signal transmission, but also reduce the transmission rate. Utility Model Content

[0004] The utility model provides a high-pressure-resistant and highly flame-retardant high-frequency digital communication cable. A hollow hexagonal ring is used in the pressure-resistant layer, which can greatly absorb the force from the outside and has a good buffering effect. It also has good flame retardancy, blocks the heat from the outside, and fully protects the internal structure. The filling layer is filled with a large number of polypropylene particles. The fine particles can eliminate internal stress when the internal structure produces thermal expansion and contraction effects, thereby improving the transmission stability and transmission rate of high-frequency signals.

[0005] To achieve the above-mentioned purpose, there is provided a high-pressure-resistant and highly flame-retardant high-frequency digital communication cable, comprising: an outer wire shell, a fireproof layer fixedly connected to the inner circumferential surface of the outer wire shell, a pressure-resistant layer fixedly connected to the inner circumferential surface of the fireproof layer, a heat-insulating layer fixedly connected to the inner circumferential surface of the pressure-resistant layer, a buffer layer fixedly connected to the inner circumferential surface of the heat-insulating layer, a filling layer fixedly connected to the inner circumferential surface of the buffer layer, an outer wrapping tape fixedly connected to the inner circumferential surface of the filling layer, a braided layer fixedly connected to the inner circumferential surface of the outer wrapping tape, an inner wrapping tape fixedly connected to the inner circumferential surface of the braided layer, an inner wrapping tape fixedly connected to the inner circumferential surface of the inner wrapping tape, an inner shielding layer fixedly connected to the inner circumferential surface of the inner shielding layer, and a conductor fixedly connected to the inner circumferential surface of the inner shielding layer.

[0006] According to the high-pressure-resistant, high-flame-retardant, high-frequency digital communication cable, the waterproof layer is made of soft polyurethane material. The soft polyurethane has good thermal insulation, stability, chemical resistance, resilience and mechanical properties, and has smaller compression deformation, thereby improving the cable's ability to cope with external impacts and thermal insulation and flame retardancy.

[0007] According to the described high-pressure-resistant and highly flame-retardant high-frequency digital communication cable, the cross-section of the pressure-resistant layer is a hollow hexagonal ring, and is made of polyethylene. Polyethylene has good strength and toughness under a wide range of temperatures and pressures, and also has the advantages of resistance to chemical corrosion, wear resistance, and flame retardancy. The hollow hexagonal ring structure greatly improves the pressure resistance of the cable.

[0008] According to the high-pressure-resistant, high-flame-retardant, high-frequency digital communication cable, the thermal insulation layer is made of flame-retardant nylon.

[0009] According to the high-pressure-resistant, high-flame-retardant, high-frequency digital communication cable, the buffer layer is made of polystyrene foam plastic, which has a closed-cell structure, good mechanical strength, and excellent buffering performance. It can better absorb internal and external stresses and effectively protect the cable structure.

[0010] According to the high-pressure-resistant, high-flame-retardant, high-frequency digital communication cable, the filling layer is a polypropylene particle layer, the fine granular polypropylene can buffer the internal and external stresses of the cable and form an insulating layer both inside and outside, the inner and outer wrapping tapes are made of cross-linked polyethylene, and the braided layer is woven with tinned copper wire.

[0011] The beneficial effects of the utility model are as follows: by arranging a fireproof layer, a pressure-resistant layer, a heat-insulating layer, a buffer layer and a filling layer, a hollow hexagonal ring is used in the pressure-resistant layer, which can greatly absorb the force from the outside and play a good buffering effect, and also has good flame retardancy, blocks the heat from the outside and fully protects the internal structure, and the filling layer is filled with a large number of polypropylene particles. The fine particles can eliminate the internal stress when the internal structure produces thermal expansion and contraction effects, thereby improving the transmission stability and transmission rate of high-frequency signals.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 This is a front view of a high-pressure-resistant, high-flame-retardant, high-frequency digital communication cable of the utility model;

[0015] Figure 2 This is a cable structure diagram of a high-pressure-resistant, high-flame-retardant, high-frequency digital communication cable of the utility model.

[0016] Legend:

[0017] 1. Outer wire shell; 2. Fireproof layer; 3. Pressure-resistant layer; 4. Heat-insulating layer; 5. Buffer layer; 6. Filling layer; 7. Outer tape; 8. Braided layer; 9. Inner tape; 10. Inner shielding layer; 11. Conductor. DETAILED DESCRIPTION

[0018] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0019] Reference Figure 1-2, The utility model embodiment is a high-pressure-resistant and high-flame-retardant high-frequency digital communication cable, which includes: an outer shell 1, a fireproof layer 2 is fixedly connected to the inner circumferential surface of the outer shell 1, and the fireproof layer 2 is made of soft polyurethane material. The soft polyurethane has good thermal insulation, stability, chemical resistance, resilience and mechanical properties, and has smaller compression deformation, which improves the cable's ability to cope with external impact and thermal insulation and flame retardancy. A pressure-resistant layer 3 is fixedly connected to the inner circumferential surface of the fireproof layer 2. The cross-section of the pressure-resistant layer 3 is a hollow hexagonal ring, and it is made of polyethylene. Polyethylene has good strength and toughness under a wide range of temperatures and pressures, and also has the advantages of chemical corrosion resistance, wear resistance, flame retardancy, etc. The hollow hexagonal ring structure greatly improves the pressure resistance of the cable. A heat insulation layer 4 is fixedly connected to the inner circumferential surface of the pressure-resistant layer 3. The heat insulation layer 4 is made of flame-retardant nylon to further isolate external heat and pressure. A buffer layer 5 is fixedly connected to the inner circumferential surface of the heat insulation layer 4. The buffer layer 5 is made of polystyrene foam plastic, which has a closed-cell structure, good mechanical strength, and excellent buffering performance. It can better absorb internal and external stresses and effectively protect the cable structure. A filling layer 6 is fixedly connected to the inner circumferential surface of the buffer layer 5, and an outer tape 7 is fixedly connected to the inner circumferential surface of the filling layer 6. A braided layer 8 is fixedly connected to the inner circumferential surface of the outer tape 7, and an inner tape 9 is fixedly connected to the inner circumferential surface of the braided layer 8. The filling layer 6 is a polypropylene particle layer. The fine granular polypropylene can buffer the internal and external stresses of the cable and form an insulating layer both inside and outside. The material of the inner tape 9 and the outer tape 7 is cross-linked polyethylene. The braided layer 8 is woven with tinned copper wire. An inner shielding layer 10 is fixedly connected to the inner circumferential surface of the inner tape 9. The cross-linked polyethylene and tinned copper wire weaving can effectively eliminate external electromagnetic waves and improve the anti-interference ability of high-frequency digital communication cables. A conductor 11 is fixedly connected to the inner circumferential surface of the inner shielding layer 10.

[0020] Working principle: The fireproof layer 2 is made of soft polyurethane, which has good thermal insulation, stability, chemical resistance, resilience and mechanical properties, and has smaller compression deformation, which improves the cable's ability to cope with external impact and thermal insulation and flame retardancy. The cross-section of the pressure-resistant layer 3 is a hollow hexagonal ring, and it is made of polyethylene. Polyethylene has good strength and toughness under a wide range of temperatures and pressures. It also has the advantages of chemical corrosion resistance, wear resistance, and flame retardancy. The hollow hexagonal ring structure greatly improves the cable's compressive resistance. The thermal insulation layer 4 is made of flame-retardant nylon to further isolate External heat and pressure, the buffer layer 5 is made of polystyrene foam plastic, which has a closed-cell structure, good mechanical strength, and excellent buffering performance. It can better absorb internal and external stresses and effectively protect the cable structure. The filling layer 6 is a polypropylene particle layer. The fine granular polypropylene can buffer the internal and external stresses of the cable and form an insulating layer both inside and outside. The inner and outer tapes 9 and 7 are made of cross-linked polyethylene. The braided layer 8 is woven with tinned copper wire. The cross-linked polyethylene and tinned copper wire can effectively eliminate external electromagnetic waves and improve the anti-interference ability of high-frequency digital communication cables.

[0021] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A high-pressure-resistant, high-flame-retardant, high-frequency digital communication cable, comprising: The outer wire shell (1) is characterized in that a fireproof layer (2) is fixedly connected to the inner circumferential surface of the outer wire shell (1), the fireproof layer (2) is made of soft polyurethane material, a pressure-resistant layer (3) is fixedly connected to the inner circumferential surface of the fireproof layer (2), a heat-insulating layer (4) is fixedly connected to the inner circumferential surface of the pressure-resistant layer (3), a buffer layer (5) is fixedly connected to the inner circumferential surface of the heat-insulating layer (4), a filling layer (6) is fixedly connected to the inner circumferential surface of the buffer layer (5), and the filling layer (6) is fixedly connected to the inner circumferential surface of the filling layer (6). An outer wrapping tape (7) is fixedly connected, a braided layer (8) is fixedly connected on the inner circumferential surface of the outer wrapping tape (7), an inner wrapping tape (9) is fixedly connected on the inner circumferential surface of the braided layer (8), the filling layer (6) is a polypropylene particle layer, the inner wrapping tape (9) and the outer wrapping tape (7) are made of cross-linked polyethylene, the braided layer (8) is tinned copper wire, an inner shielding layer (10) is fixedly connected on the inner circumferential surface of the inner wrapping tape (9), and a conductor (11) is fixedly connected on the inner circumferential surface of the inner shielding layer (10).

2. A high-pressure-resistant, high-flame-retardant, high-frequency digital communication cable according to claim 1, characterized in that: The cross section of the pressure-resistant layer (3) is a hollow hexagonal ring and is made of polyethylene.

3. A high-pressure-resistant, high-flame-retardant, high-frequency digital communication cable according to claim 1, characterized in that: The heat insulation layer (4) is made of flame-retardant nylon.

4. A high-pressure-resistant, high-flame-retardant, high-frequency digital communication cable according to claim 1, characterized in that: The buffer layer (5) is made of polystyrene foam plastic.

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