CN205609262U - LAN control bus's high fire -retardant shielded twisted pair - Google Patents
LAN control bus's high fire -retardant shielded twisted pair Download PDFInfo
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- CN205609262U CN205609262U CN201620362109.4U CN201620362109U CN205609262U CN 205609262 U CN205609262 U CN 205609262U CN 201620362109 U CN201620362109 U CN 201620362109U CN 205609262 U CN205609262 U CN 205609262U
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- fire
- twisted pair
- layer
- wire
- shielded twisted
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Abstract
The utility model discloses a LAN control bus's high fire -retardant shielded twisted pair, tegillum outside outermost insulation, insulating ecderon in situ side is thermal -insulation fireproof layer, and the thermal -insulation fireproof layer inlayer is first shielding layer, sets up a set of above a wire and a piece -root grafting ground wire in the first shielding layer, and the insulating layer of different thickness is all wrapped up to the wire outside, and one deck secondary shielding layer is all wrapped up to per two wire outsides. The utility model discloses simple structure, it is high fire -retardant to have a fire prevention, and the volume of being fuming is extremely low, reaches CMPFT6's the resistant grade of firing to having the low -loss advantage of high shield, stably, preventing that electromagnetic interference nature in inside and outside is good and have signal transmission, it is fire -retardant to prevent fires, the low low -loss characteristics of cigarette.
Description
Technical field
This utility model relates to a kind of LAN that is used in and controls the connection line of bus, particularly relates to a kind of LAN and controls the high fire-retardance Shielded Twisted Pair of bus.
Background technology
Along with the progress of science and technology, the development of industrial automation, the extensive application of technology of Internet of things.High buildings and large mansions are built more and more, more intelligent.For security reasons, smokeless for fire prevention and signal transmission requirement is more and more higher.
Current most of LANs control bus and use polyethylene and polrvinyl chloride to do and insulate, and outer totalling shielding prevents signal disturbing.Such structure easy firing have the biggest amount of being fuming time on fire, can cause fire further, and personnel escape can be caused bigger difficulty by the excessive amount of being fuming;Line is not carried out individually shielded, then line between also have signal and interfere, the generation of noise can be caused, affect controller correct operation.
For avoiding described phenomenon, needing a kind of stable signal transmission, anti-tampering property is good and high fire-retardance smokeless fireproof connection line.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of stable signal transmission, and anti-tampering property is good and the high fire-retardance Shielded Twisted Pair of high fire-retardance smokeless fireproof LAN control bus.
This utility model is achieved through the following technical solutions: a kind of LAN controls the high fire-retardance Shielded Twisted Pair of bus, including outermost insulation serving, it is heat-insulating, fire-preventing layer inside insulation serving, heat-insulating, fire-preventing layer internal layer is the first screen layer, the wire of more than one group and an earth lead are set in the first screen layer, all wrap up the insulating barrier of different-thickness outside wire, outside every two wires, all wrap up one layer of secondary shielding layer.
As preferred technical scheme, described insulation serving uses high flame retardant polyvinyl chloride material extrusion molding.
As preferred technical scheme, described heat-insulating, fire-preventing layer is entwined by mica tape.
As preferred technical scheme, described first screen layer is formed by having the tinned copper conductor braiding preventing fires and having shielding electromagnetic signal interference performance.
As preferred technical scheme, described earth lead is formed by the tinned copper conductor material deriving electromagnetic interference signal is stranded.
As preferred technical scheme, described secondary shielding layer is formed by preventing fires and having the polyimides aluminum foil material cladding of shielding electromagnetic signal interference performance.
As preferred technical scheme, described insulating barrier uses fluoroplastics extrusion to form, and insulating barrier is coated on outside wire.
As preferred technical scheme, described wire is bare copper wire, is formed by the bare copper conductor material with high conduction performance is stranded.
The beneficial effects of the utility model are: this utility model have employed insulation serving, the clad being entwined by heat-insulating, fire-preventing band, the signal shielding layer that metallic conductor is knitted to form, the interference signal of the stranded formation of tinned copper conductor derives earth lead, the wire of coated insulation layer and holding wire, wherein holding wire with two cores for a pair, every a pair line is all used alone metal film cladding and does signal shielding layer, a kind of LAN controls the high fire-retardance Shielded Twisted Pair of bus and has high fire retardant, the amount of being fuming is extremely low, reach the resistance to combustion grade of CMP/FT6, and there is the low-loss advantage of high shielding.
The insulation serving that high flame retardant polyvinyl chloride is constituted effectively acts as not firing and the effect of pole low-smoke；Mica tape serves effect that is heat insulation and that prevent external flame from entering wire internal；The signal shielding layer that tinned copper conductor is woven into serves the interference of isolation external signal and stops the effect of flame；Electromagnetic interference signal is derived by the stranded earth lead of tinned copper conductor；Polyimides aluminium foil layer serves fire resistant, and carries out individually shielded to every a pair holding wire, stops internal signal and outer interfering by signal；The insulating barrier of coated wire is macromolecule fluoroplastics, has low-loss, high temperature resistant, the effect of fire-retardant fireproof.
In sum, high fire-retardance Shielded Twisted Pair of the present utility model has stable signal transmission, and anti-inside and outside electromagnetic disturbance is good, fire protection flame retarding, the low-loss feature of low cigarette.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
All features disclosed in this specification, or disclosed all methods or during step, in addition to mutually exclusive feature and/or step, all can combine by any way.
Any feature disclosed in this specification (including any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be by other equivalences or there is the alternative features of similar purpose replaced.I.e., unless specifically stated otherwise, an example during each feature is a series of equivalence or similar characteristics.
As shown in Figure 1, a kind of LAN of the present utility model controls the high fire-retardance Shielded Twisted Pair of bus, including outermost insulation serving 1, it is heat-insulating, fire-preventing layer 2 inside insulation serving 1, heat-insulating, fire-preventing layer 2 internal layer is the first screen layer 3, wire 7 and an earth lead 4, the outside insulating barrier 6 all wrapping up different-thickness of wire 7, every two wires 7 one layer of secondary shielding layer 5 of outside all parcels of more than one group are set in the first screen layer 3.
In the present embodiment, insulation serving 1 uses high flame retardant polyvinyl chloride material extrusion molding, owing to using high-grade low-smoke fireproof flame-proof polyvinyl chloride material as insulating outer layer, plays the effect of exterior protection, and containment flame enters wire internal effectively.
In the present embodiment, the first screen layer 3 is formed by having the tinned copper conductor braiding preventing fires and having shielding electromagnetic signal interference performance, and heat-insulating, fire-preventing layer is entwined by mica tape.Braid is that metallic conductor has fire protection flame retarding and shielding noise interference signal；Outside woven wire rod, it is coated with mica tape 2, plays heat-insulating, fire-preventing effect.
Wherein, earth lead 4 is formed by the tinned copper conductor material deriving electromagnetic interference signal is stranded.
In the present embodiment, secondary shielding layer 5 by prevent fires and have shielding electromagnetic signal interference performance polyimides aluminum foil material cladding form, aluminum face outwardly formation totally enclosed shielding, the resistance to 180 degree of high temperature of this aluminium foil and fire protection flame retarding, two strands pull ground wire 4 again into.
In the present embodiment, insulating barrier 6 uses fluoroplastics extrusion to form, and it is outside that insulating barrier 6 is coated on wire 7, and fluorine material has the excellent low-loss of transmission performance, can spend and not fire fire prevention with resistance to 200 degree of high temperature and low temperature resistant-60 and stop burning diffusion, make the smog sent and toxin minimize.
In the present embodiment, wire 7 is bare copper wire, is formed by the bare copper conductor material with high conduction performance is stranded.
Electric wire of the present utility model is usually used in ventilation return gas channel in the building of cabling.When breaking out of fire, building will not be full of substantial amounts of smog or harm toxin that cable distributes.
This wire rod is under the burning condition of blowing forced by fan, with 87.9KW coal gas Bunsen burner (300,000BTU/Hr) burn 20 minutes, so a bundle cable will self-extinguish in burning diffusion is less than 5 meters, in combustion process, the peak value of optical density is less than 0.5, average density value is less than 0.15, greatly improves the safety in building, and is greatly improved the probability of personnel escape when fire occurs.
The beneficial effects of the utility model are: this utility model have employed insulation serving, the clad being entwined by heat-insulating, fire-preventing band, the signal shielding layer that metallic conductor is knitted to form, the interference signal of the stranded formation of tinned copper conductor derives earth lead, the wire of coated insulation layer and holding wire, wherein holding wire with two cores for a pair, every a pair line is all used alone metal film cladding and does signal shielding layer, a kind of LAN controls the high fire-retardance Shielded Twisted Pair of bus and has high fire retardant, the amount of being fuming is extremely low, reach the resistance to combustion grade of CMP/FT6, and there is the low-loss advantage of high shielding.
The insulation serving that high flame retardant polyvinyl chloride is constituted effectively acts as not firing and the effect of pole low-smoke；Mica tape serves effect that is heat insulation and that prevent external flame from entering wire internal；The signal shielding layer that tinned copper conductor is woven into serves the interference of isolation external signal and stops the effect of flame；Electromagnetic interference signal is derived by the stranded earth lead of tinned copper conductor；Polyimides aluminium foil layer serves fire resistant, and carries out individually shielded to every a pair holding wire, stops internal signal and outer interfering by signal；The insulating barrier of coated wire is macromolecule fluoroplastics, has low-loss, high temperature resistant, the effect of fire-retardant fireproof.
In sum, high fire-retardance Shielded Twisted Pair of the present utility model has stable signal transmission, and anti-inside and outside electromagnetic disturbance is good, fire protection flame retarding, the low-loss feature of low cigarette.
The above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model is not limited thereto, any change expected without creative work or replacement, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claims are limited.
Claims (8)
1. the high fire-retardance Shielded Twisted Pair of a LAN control bus, it is characterized in that: include outermost insulation serving, it is heat-insulating, fire-preventing layer inside insulation serving, heat-insulating, fire-preventing layer internal layer is the first screen layer, the wire of more than one group and an earth lead are set in the first screen layer, all wrap up the insulating barrier of different-thickness outside wire, outside every two wires, all wrap up one layer of secondary shielding layer.
LAN the most according to claim 1 controls the high fire-retardance Shielded Twisted Pair of bus, it is characterised in that: described insulation serving uses high flame retardant polyvinyl chloride material extrusion molding.
LAN the most according to claim 1 controls the high fire-retardance Shielded Twisted Pair of bus, it is characterised in that: described heat-insulating, fire-preventing layer is entwined by mica tape.
LAN the most according to claim 1 controls the high fire-retardance Shielded Twisted Pair of bus, it is characterised in that: described first screen layer is formed by having the tinned copper conductor braiding preventing fires and having shielding electromagnetic signal interference performance.
LAN the most according to claim 1 controls the high fire-retardance Shielded Twisted Pair of bus, it is characterised in that: described earth lead is formed by the tinned copper conductor material deriving electromagnetic interference signal is stranded.
LAN the most according to claim 1 control bus high fire-retardance Shielded Twisted Pair, it is characterised in that: described secondary shielding layer by prevent fires and have shielding electromagnetic signal interference performance polyimides aluminum foil material cladding form.
LAN the most according to claim 1 controls the high fire-retardance Shielded Twisted Pair of bus, it is characterised in that: described insulating barrier uses fluoroplastics extrusion to form, and insulating barrier is coated on outside wire.
LAN the most according to claim 1 controls the high fire-retardance Shielded Twisted Pair of bus, it is characterised in that: described wire is bare copper wire, is formed by the bare copper conductor material with high conduction performance is stranded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620362109.4U CN205609262U (en) | 2016-04-27 | 2016-04-27 | LAN control bus's high fire -retardant shielded twisted pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620362109.4U CN205609262U (en) | 2016-04-27 | 2016-04-27 | LAN control bus's high fire -retardant shielded twisted pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205609262U true CN205609262U (en) | 2016-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620362109.4U Expired - Fee Related CN205609262U (en) | 2016-04-27 | 2016-04-27 | LAN control bus's high fire -retardant shielded twisted pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205609262U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023186A (en) * | 2017-12-04 | 2018-05-11 | 深圳市威通电子有限公司 | Data cable and its manufacture method |
-
2016
- 2016-04-27 CN CN201620362109.4U patent/CN205609262U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023186A (en) * | 2017-12-04 | 2018-05-11 | 深圳市威通电子有限公司 | Data cable and its manufacture method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 Termination date: 20200427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |