CN218069423U - Halogen-free low-smoke flame-retardant computer cable for coal mine - Google Patents

Abstract

The utility model discloses a halogen-free low-smoke flame-retardant computer cable for coal mines, which relates to the technical field of cables, an insulating layer is made of special cross-linked polyethylene, the insulating resistance performance is excellent, the impedance of the cable is greatly increased, and the cable is convenient to use in occasions with small distributed capacitance and higher impedance according to the special environmental requirements of intelligent instruments such as high impedance and low capacitance; the shielding layer is woven by tinned copper wires, high-frequency interference is well inhibited, static electricity is shielded, the influence of surrounding environment and strong magnetic field is avoided in the communication process, the application range and the transmission performance of the cable are greatly improved, the performance of the cable is superior, and the cable can be applied to complex industrial automatic control communication and building automatic control communication. The utility model has the advantages that: the utility model discloses have characteristics such as good interference killing feature, low electric capacity, high impedance, cold-resistant, wear-resisting, ultraviolet resistance, resistant oily, chemical resistance, flexible, self-extinguishing, there is not steamed low cigarette fire-retardant.

Description

Halogen-free low-smoke flame-retardant computer cable for coal mine

Technical Field

The utility model relates to the technical field of cables, concretely relates to there is not steamed low fire-retardant computer cable of cigarette for coal mine.

Background

With the development of social economy and science and technology, the continuous upgrading and reconstruction of coal mining equipment greatly comprise the investment of high-technology high-precision coal mining equipment. The production efficiency is greatly improved, and the quality safety and the environmental safety are also improved. As an important operation and component part of the equipment, the cable also needs to meet the requirements of high precision of the equipment according to the use environment and the requirement of environmental protection and safety such as halogen-free low-smoke flame retardation and the like. Therefore, the computer cable is required to have the characteristics of no halogen, low smoke, high flame retardance, oil resistance, acid resistance, high mechanical property, high impedance, strong magnetic field interference, low capacitance and the like, and particularly in the use occasions of an oscilloscope computer and the like for transmitting pulse signals, the cable is required to have the lowest possible capacitance in order to reduce the waveform distortion of the signals. At present, although the traditional twisted pair and communication cable can be used in general occasions, the use requirements of equipment cannot be met in special environments such as mines and the like.

SUMMERY OF THE UTILITY MODEL

In order to avoid and solve the technical problem, the utility model provides a there is not steamed low fire-retardant computer cable of cigarette for coal mine.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides a there is not steamed low fire-retardant computer cable of cigarette for colliery, includes a plurality of cable cores, the cable core includes that stranded copper wire transposition forms copper conductor, crowded package have the insulating layer of polyethylene insulation outside the copper conductor, and the outer cladding of per two insulating layers has isolation layer one, the outer tinned copper wire branch shielding layer of weaving of isolation layer, it has the median, two to divide the shielding layer outward the package has around the covering, the median with around packing between the covering have aluminium foil thermal-insulated cotton, around the covering outward around the covering rubber layer, the outer wall annular array on rubber layer has a plurality of circular rubber strips, can carry out the shock attenuation step by step through rubber strip and rubber layer, increases the practical life of cable, forms well hollow layer between the rubber strip, when can prevent catching fire around this cable, prevents that outside heat from transmitting to the inside of cable makes inner structure damage, the rubber strip outward around the inner liner that has high fire-retardant low cigarette high mechanical properties's of nothing inner liner, the inner liner is woven tinned copper wire and is woven total shielding layer, total shielding layer cladding has the isolation layer two, the outer cladding of isolation layer has the restrictive coating.

As a further aspect of the present invention: the sheath layer is a polyolefin sheath.

As a further aspect of the present invention: two pairs of insulated wire cores in the insulating layer are twisted in pairs, and a first isolating layer is wrapped around the twisted pairs.

As a further aspect of the present invention: and a plurality of friction balls are arranged on the outer wall of the sheath layer in an annular array.

The insulating layer is made of special cross-linked polyethylene, the insulating resistance performance is excellent, and the impedance of the cable is greatly increased. The sub-shielding layer is woven by tinned copper wires, the weaving density exceeds 80%, high-frequency interference is well inhibited, static electricity and the like are shielded, and long-distance transmission is not influenced by surrounding environment. The isolation layer adopts a high-flame-retardant halogen-free low-smoke special wrapping material, has higher flame retardant property, and meets the requirement of environmental protection property on halogen-free low smoke. The total shielding is woven by tinned copper wires, so that the anti-interference performance is enhanced, and the like. The inner liner and the outer sheath have the characteristics of high flame retardance, wear resistance, ultraviolet resistance, oil resistance, chemical resistance, halogen-free low-smoke ring and the like, and meet the requirements of environmental protection and high flame retardance of the existing cable.

The insulating layer of the utility model is made of special cross-linked polyethylene, has excellent insulating resistance performance, greatly increases the impedance of the cable, and is convenient to use in occasions with small distributed capacitance and higher impedance aiming at the special environmental requirements of intelligent instruments such as high impedance and low capacitance; the shielding layer is woven by tinned copper wires, high-frequency interference is well inhibited, static electricity is shielded, the influence of surrounding environment and strong magnetic field is avoided in the communication process, the application range and the transmission performance of the cable are greatly improved, the performance of the cable is superior, and the cable can be applied to complex industrial automatic control communication and building automatic control communication.

A plurality of circular rubber strips of outer wall annular array on rubber layer can carry out the shock attenuation step by step through rubber strip and rubber layer, increases the practical life of cable, forms the hollow layer between the rubber strip, when can preventing catching fire around this cable, prevents that outside heat transfer from making the inner structure damage to the inside of cable.

The utility model has the advantages that: the utility model discloses have characteristics such as good interference killing feature, low electric capacity, high impedance, cold-resistant, wear-resisting, ultraviolet resistance, resistant oil, resistant chemical product, flexible, self-extinguishing, there is not steamed low cigarette fire-retardant.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of the main view of the present invention.

In the figure: 1. a conductor; 2. an insulating layer; 3. a first isolating layer; 4. dividing a shielding layer; 5. an isolation zone; 6. wrapping a covering; 7. an inner liner layer; 8. a total shielding layer; 9. a second isolation layer; 10. a sheath layer; 11. a rubber layer; 12. a rubber strip; 13. a friction ball; 14. a hollow layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, the utility model relates to a low smoke and halogen-free flame retardant computer cable for coal mine, which comprises a plurality of cable cores, wherein each cable core comprises a copper conductor 1 formed by twisting a plurality of strands of superfine copper wires, an insulating layer 2 extruded outside the copper conductor 1 and insulated by special cross-linked polyethylene, every two insulation wire cores in the insulating layer 2 are twisted in pairs, the insulating layer 3 is wrapped around the insulating layer after the twisting, the insulating layer 3 is wrapped with the insulating layer one outside every two insulation layers 2, the insulating layer one 3 is wrapped with a finely woven tinned copper wire shielding layer 4, the shielding layer 4 is wrapped with an isolating belt 5, then the cable is twisted with the wire pairs, the cable core is wrapped with a low smoke and high flame retardant wrapping layer 6, and aluminum foil heat insulation cotton is filled between the isolating belt 5 and the wrapping layer 6, so that the cable has good heat insulation and flame retardant effects, no smoke and no toxicity when fire occurs, is more environment-friendly, and has sound insulation effect at the same time, and the weatherability is strong, wrap layer 6 outward around rubber layer 11, the outer wall annular array on rubber layer 11 has twelve circular rubber strips 12, can carry out the shock attenuation step by step through rubber strip 12 and rubber layer 11, increases the practical life of cable, forms hollow layer 13 between the rubber strip 12, when can preventing catching fire around this cable, prevents that outside heat from transmitting the inside of cable and making the inner structure damage, rubber strip 12 outward wraps high fire-retardant steamed low smoke inner liner 7 of high mechanical properties of high fire-retardant nothing, inner liner 7 is outer to be woven and is prevented electric and electromagnetic interference's tinned copper wire and weave total shielding layer 8, total shielding layer 8 outer cladding has high fire-retardant steamed low smoke isolation layer two 9, two 9 outer cladding have low cigarette, no halogen isolation layer, high fire-retardant, resistant oil, acidproof, high mechanical properties's polyolefin restrictive coating 10.

The insulating layer 2 is made of special cross-linked polyethylene, has excellent insulating resistance performance, greatly increases the impedance of the cable, and reduces the working capacitance between the line pairs.

The sub-shielding layers 4 and the total shielding layer 8 are woven by tinned copper wires, the weaving density exceeds 80%, high-frequency interference is well inhibited, static electricity and the like are shielded, and long-distance transmission is not influenced by surrounding environments.

Sheath 10 outer wall annular array has twelve friction balls 13, and friction balls 13 are the rubber ball, can carry out the shock attenuation on the one hand, and on the other hand improves the wearability of cable, increases its life.

The utility model discloses an insulating layer 2 is made for special crosslinked polyethylene, to special environmental requirement such as mining high performance instrument controlgear high impedance, low electric capacity and the high fire-retardant operation requirement of halogen-free low cigarette, special crosslinked polyethylene material is used in the special selection, the insulation resistance excellent performance, very big increase the impedance of cable, and adopt multilayer shielding structure, be convenient for use in the occasion of little distributed capacitance and higher impedance, the halogen-free low cigarette high fire-retardant structure of adoption satisfies current operational environment and uses and environmental protection safety requirement.

The utility model discloses a shielding layer is woven for the tinned copper wire, to high-frequency interference, shields static occasion, adopts the tinned copper wire to weave, does not receive environment and strong magnetic field influence on every side among the messenger's communication process, has improved the application range and the transmission performance of cable greatly, and product property can be distinguished, can be applied to complicated industrial automation control communication and building automatic control communication.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims (4)

1. The utility model provides a there is not steamed low fire-retardant computer cable of cigarette in colliery, a serial communication port, including a plurality of cable cores, the cable core includes copper conductor that the stranded copper wire transposition formed, crowded package polyethylene insulating layer outside the copper conductor, and the outer cladding of per two insulating layers has an isolation layer one, the isolation layer is woven tinned copper wire outward and is divided the shielding layer, it has the median around the package outward to divide the shielding layer, two the outer cladding of median has around the package, and the median is filled with the aluminium foil thermal-insulated cotton between the package, around the package outward around the covering rubber layer, the outer wall annular array on rubber layer has a plurality of circular rubber strips, forms the cavity between the rubber strip, the rubber strip is outward around the package has the inner liner, total shielding layer is woven to the tinned copper wire outside the inner liner, total shielding layer outer cladding has isolation layer two, the outer cladding of isolation layer has the restrictive coating.

2. The halogen-free low-smoke flame-retardant computer cable for the coal mine according to claim 1, wherein the sheath layer is a polyolefin sheath.

3. The halogen-free low-smoke flame-retardant computer cable for the coal mine according to claim 1, wherein the insulated wire cores in the insulating layer are twisted in pairs, and a first insulating layer is wrapped after the pair twisting.

4. The computer cable of claim 1, wherein the jacket layer has a plurality of rubber balls in an annular array on the outer wall.

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