CN103700435A - Fireproof digital transmission flexible cable for security signal system - Google Patents
Fireproof digital transmission flexible cable for security signal system Download PDFInfo
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- CN103700435A CN103700435A CN201310653561.7A CN201310653561A CN103700435A CN 103700435 A CN103700435 A CN 103700435A CN 201310653561 A CN201310653561 A CN 201310653561A CN 103700435 A CN103700435 A CN 103700435A
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Abstract
The invention discloses a fireproof digital transmission flexible cable for a security signal system, which comprises three shielding line groups, wherein a single line insulation layer is arranged on the external surface of each stranded single line; each single line insulation layer consists of an outer single line insulation layer and an inner single line insulation layer located on the inner side of the outer single line insulation layer; each inner single line insulation layer accounts for 85% of the thickness of each single line insulation layer; each inner single line insulation layer is made of natural color cross-linked polyethylene insulated; each outer single line insulation layer comprises the following materials by mass percentage: 1-3% of natural color cross-linked polyethylene material and 97-99% of plastic color masterbatch; a line resistance isolation layer is 0.08-0.15mm in thickness; and two fireproof tape wrapping layers exist in a fireproof tape layer of the cable. The digital cable can eliminate the influence of metal particles in the color masterbatch distributed around a conductor on an electric field, so that the transmission attenuation of the cable is reduced; mechanical and physical properties and light and heat ageing resistance of the insulation layers are improved; a production technology is mature and stable; and performance indices of a product are increased.
Description
Technical field
The present invention relates to digital cable field, be specifically related to fire safe type Digital Transmission flexible cable for a kind of security signal system.
Background technology
In signal system, for the signal cable of signal, its conductor is single core copper conductor, and cable shield is the vertical bag of copper strips or wrapped, and armature of cable mode is two wrapped armourings of steel band.Conventional signal cable does not possess fire-retardant and fire-resistant dual-use function.The signal cable of said structure, conductor hardening due to factors such as heating, oxidations in long-term use procedure, becomes fragile, and causes end easily to rupture; The structure limitation of cable makes that its bending property is poor, the flame-retardant poor performance of cable.
Summary of the invention
The object of the invention is to provide fire safe type Digital Transmission flexible cable for a kind of security signal system, this security signal system can be eliminated the impact on electric field of the metal particle that is distributed in conductor color masterbatch around with fire safe type Digital Transmission flexible cable, thereby reduces the transmission attenuation of cable; And improved the ageing resistace of the mechanical and physical performance of insulating barrier and light, heat, and mature production technology is stable, and the performance index of product are improved.
For achieving the above object, the technical solution used in the present invention is: fire safe type Digital Transmission flexible cable for a kind of security signal system, it transmits for track traffic security signal, comprise by wrapped three the coated shielding conductor groups of the first polyester belt, this shielding conductor group comprises that two by 7 stranded stranded single lines that form of the first tinned copper wire, in described 7 the first tinned copper wires, 1 the first tinned copper wire is positioned at center, and all the other 6 first tinned copper wires are stranded in described the first tinned copper wire surface that is positioned at center;
This stranded single line outer surface has a single line insulating barrier;
Described two stranded single lines are wrapped coated by the second polyester belt, and this second polyester belt outer surface covers wired resistance screen, and a line intercepts absciss layer and is coated on described line resistance screen outer surface; One line group drain wire is between described the second polyester belt and line resistance screen;
One cable fire belting layer is coated on described the first polyester belt outer surface;
One cable shield armour is coated on described cable fire belting layer outer surface;
One protective coverings of cable is coated on described cable shield armour outer surface;
Described single line insulating barrier is comprised of outer single line insulating barrier and the single line insulating barrier that is positioned at its inner side, and interior single line insulating barrier accounts for described single line thickness of insulating layer
85%, interior single line insulating barrier is that true qualities are crosslinked polyetylene insulated, outer single line insulating barrier is comprised of the material with following quality percentage composition:
True qualities crosslinked polyethylene material 1%～3%,
Plastic color master material 97%～99%;
Described line intercepts absciss layer and comprises synthetic mica paper, and these synthetic mica paper both sides are all covered with glass-fiber-fabric by silicon resin adhesive layer;
Described cable shield armour is formed by the braiding of multiply welding wire, and this welding wire is comprised of the steel wire and the coated copper layer of outer surface that are positioned at center, and this welding wire diameter is φ 0.10～φ 0.15 mm; Described line group drain wire is tin-coated copper single line, its wire diameter φ 0.30～φ 0.50 mm;
It is 0.08～0.15mm that described line intercepts absciss layer thickness range;
In described cable fire belting layer, the wrapped number of plies of fire-resistant wrapping tape is 2 layers.
In technique scheme, further improve technical scheme as follows:
In such scheme, a cable drain wire is between described cable fire belting layer and cable shield armour, and this cable drain wire is tin-coated copper single line, and its wire diameter is φ 0.50～φ 0. 80 mm.
Because technique scheme is used, the present invention compared with prior art has following advantages and effect:
1. fire safe type Digital Transmission flexible cable for security signal system of the present invention, adopts the stranded conductor of multiply tin-coated copper single line to substitute single core copper conductor, and conductor insulation adopts crosslinked polyetylene insulated; When guaranteeing cable softness, improve long-term work temperature more than 20 ℃, improve the amount of damming more than 25% simultaneously; To transmission line group (to line group and quad), adopt tinned copper wire to carry out braid shielded, the electrical isolation between realization group, interference performance between anti-group of raising cable; Adopt the fire-resistant separator between the wrapped formation line of synthetic mica tape group, cable conductor is formed to the flame retardant coating of cable conductor, improve the refractory ability of cable; Induced current in the copper layer transmission shield on welding wire surface, is mainly electric field shielding layer; Core wire is magnetic conductor, is mainly magnetic field shielding layer; The more traditional shielding material (copper, aluminium etc.) of welding wire has higher mechanical strength, can bear larger mechanism's external force.Said structure, when realizing the functional characteristics such as the electric field shielding of cable, magnetic field shielding, cable protective layer function, has been simplified cable sheath structure, and cable is soft, cost is low, is convenient to installation; Cable jacket adopts low smoke halogen-free fire retardant fire resistant sheath material, makes cable possess flame-retarding characteristic.By said structure and material, innovate, thereby realized when guaranteeing the stable transmission performance of cable, the reliability that the pliability that improved cable is good, improve cable, improves flame-retardant characteristic and the environmental protection characteristic of cable.
2. fire safe type Digital Transmission flexible cable for security signal system of the present invention, described single line insulating barrier is comprised of outer single line insulating barrier and the single line insulating barrier that is positioned at its inner side, interior single line insulating barrier accounts for 85% of described single line thickness of insulating layer, interior single line insulating barrier is that true qualities are crosslinked polyetylene insulated, outer single line insulating barrier is comprised of the material with following quality percentage composition: true qualities crosslinked polyethylene material 1%～3%, plastic color master material 97%～99%; Both there is the feature that substitutes traditional insulation mode, can reduce again color masterbatch content more than 90%, thereby the cost of reduction insulating material, color masterbatch is only distributed in the extexine of insulated single wire, elimination is distributed in the impact on electric field of metal particle in conductor color masterbatch around, reduces the transmission attenuation of cable, has improved the ageing resistace of the mechanical and physical performance of insulating barrier and light, heat, and mature production technology is stable, and the performance index of product are improved.
3. fire safe type Digital Transmission flexible cable for security signal system of the present invention, described cable shield armour is formed by the braiding of multiply welding wire, this welding wire is comprised of the steel wire and the coated copper layer of outer surface that are positioned at center, this welding wire diameter is φ 0.10～φ 0.15 mm, induced current in the copper layer transmission shield on welding wire surface, is mainly electric field shielding layer; Core wire is magnetic conductor, is mainly magnetic field shielding layer; The more traditional shielding material (copper, aluminium etc.) of welding wire has higher mechanical strength, can bear larger mechanism's external force, realize cable the functional characteristics such as electric field shielding, magnetic field shielding, cable protective layer function time, simplified cable sheath structure, cable is soft, cost is low, is convenient to installation.
Accompanying drawing explanation
Accompanying drawing 1 is shielding conductor group structural representation of the present invention;
Accompanying drawing 2 is single line insulation layer structure schematic diagram of the present invention;
Accompanying drawing 3 is fire safe type Digital Transmission soft cable structure schematic diagram for security signal system of the present invention;
Accompanying drawing 4 is line obstruct absciss layer structural representation of the present invention;
Accompanying drawing 5 is welding wire structural representation of the present invention.
In above accompanying drawing: 1, the first polyester belt; 2, shielding conductor group; 3, the first tinned copper wire; 4, stranded single line; 5, single line insulating barrier; 51, outer single line insulating barrier; 52, interior single line insulating barrier; 6, the second polyester belt; 7, line resistance screen; 8, line intercepts absciss layer; 81, synthetic mica paper; 82, silicon resin adhesive layer; 83, glass-fiber-fabric; 9, line group drain wire; 10, cable fire belting layer; 11, cable shield armour; 12, protective coverings of cable; 13, welding wire; 131, steel wire; 132, copper layer; 14, cable drain wire.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
Embodiment: fire safe type Digital Transmission flexible cable for a kind of security signal system, comprise by wrapped three the coated shielding conductor groups 2 of the first polyester belt 1, this shielding conductor group 2 comprises that two by 7 stranded stranded single lines 4 that form of the first tinned copper wire 3, in described 7 the first tinned copper wires 3,1 the first tinned copper wire is positioned at center, and all the other 6 first tinned copper wires are stranded in described the first tinned copper wire surface that is positioned at center;
These stranded single line 4 outer surfaces have a single line insulating barrier 5;
Described two stranded single lines 4 are wrapped coated by the second polyester belt 6, and these the second polyester belt 6 outer surfaces cover wired resistance screen 7, one lines obstruct absciss layers 8 and are coated on described line resistance screen 7 outer surfaces; One line group drain wire 9 is between described the second polyester belt 6 and line resistance screen 7;
One cable fire belting layer 10 is coated on described the first polyester belt 1 outer surface;
One cable shield armour 11 is coated on described cable fire belting layer 10 outer surfaces;
One protective coverings of cable 12 is coated on described cable shield armour 11 outer surfaces;
Described single line insulating barrier 5 is comprised of outer single line insulating barrier 51 and the single line insulating barrier 52 that is positioned at its inner side, interior single line insulating barrier 52 accounts for 85% of described single line insulating barrier 5 thickness, interior single line insulating barrier 52 is that true qualities are crosslinked polyetylene insulated, and outer single line insulating barrier 51 is comprised of the material with following quality percentage composition:
True qualities crosslinked polyethylene material 1%～3%,
Plastic color master material 97%～99%;
Described line intercepts absciss layer 8 and comprises synthetic mica paper 81, and these synthetic mica paper 81 both sides are all covered with glass-fiber-fabric 83 by silicon resin adhesive layer 82;
Described cable shield armour 11 is formed by 13 braidings of multiply welding wire, and this welding wire 13 is comprised of the steel wire 131 and the coated copper layer 132 of outer surface that are positioned at center, and these welding wire 13 diameters are φ 0.10～φ 0.15 mm; Described line group drain wire is tin-coated copper single line, its wire diameter φ 0.30～φ 0.50 mm;
It is 0.08～0.15mm that described line intercepts absciss layer 8 thickness ranges;
In described cable fire belting layer 10, the wrapped number of plies of fire-resistant wrapping tape is 2 layers.
One cable drain wire 14 is between described cable fire belting layer 10 and cable shield armour 11, and this cable drain wire 14 is tin-coated copper single line, and its wire diameter is φ 0.50～φ 0. 80 mm.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (2)
1. fire safe type Digital Transmission flexible cable for a security signal system, it is characterized in that: comprise by wrapped coated three the shielding conductor groups (2) of the first polyester belt (1), this shielding conductor group (2) comprises that two by the stranded stranded single line (4) forming of 7 the first tinned copper wires (3), in described 7 the first tinned copper wires (3), 1 the first tinned copper wire is positioned at center, and all the other 6 first tinned copper wires are stranded in described the first tinned copper wire surface that is positioned at center;
This stranded single line (4) outer surface has a single line insulating barrier (5);
Described two stranded single lines (4) are wrapped coated by the second polyester belt (6), and this second polyester belt (6) outer surface covers wired resistance screen (7), and a line intercepts absciss layer (8) and is coated on described line resistance screen (7) outer surface; One line group drain wire (9) is positioned between described the second polyester belt (6) and line resistance screen (7);
One cable fire belting layer (10) is coated on described the first polyester belt (1) outer surface;
One cable shield armour (11) is coated on described cable fire belting layer (10) outer surface;
One protective coverings of cable (12) is coated on described cable shield armour (11) outer surface;
Described single line insulating barrier (5) by outer single line insulating barrier (51) and be positioned at its inner side single line insulating barrier (52) form, interior single line insulating barrier (52) accounts for 85% of described single line insulating barrier (5) thickness, interior single line insulating barrier (52) is that true qualities are crosslinked polyetylene insulated, and outer single line insulating barrier (51) is comprised of the material with following quality percentage composition:
True qualities crosslinked polyethylene material 1%～3%,
Plastic color master material 97%～99%;
Described line intercepts absciss layer (8) and comprises synthetic mica paper (81), and these synthetic mica paper (81) both sides are all covered with glass-fiber-fabric (83) by silicon resin adhesive layer (82);
Described cable shield armour (11) is formed by multiply welding wire (13) braiding, this welding wire (13) is comprised of the steel wire (131) and the coated copper layer (132) of outer surface that are positioned at center, and this welding wire (13) diameter is φ 0.10～φ 0.15 mm; Described line group drain wire is tin-coated copper single line, its wire diameter φ 0.30～φ 0.50 mm;
It is 0.08～0.15mm that described line intercepts absciss layer (8) thickness range;
In described cable fire belting layer (10), the wrapped number of plies of fire-resistant wrapping tape is 2 layers.
2. fire safe type Digital Transmission flexible cable for security signal system according to claim 1, it is characterized in that: a cable drain wire (14) is positioned between described cable fire belting layer (10) and cable shield armour (11), this cable drain wire (14) is tin-coated copper single line, and its wire diameter is φ 0.50～φ 0. 80 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653561.7A CN103700435B (en) | 2012-06-29 | 2012-06-29 | Fire safe type railroad communications flexible cable |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653561.7A CN103700435B (en) | 2012-06-29 | 2012-06-29 | Fire safe type railroad communications flexible cable |
| CN201210220808.1A CN102768879B (en) | 2012-06-29 | 2012-06-29 | Flame-retardant and fire-resistant rail transit signal flexible cable |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210220808.1A Division CN102768879B (en) | 2012-06-29 | 2012-06-29 | Flame-retardant and fire-resistant rail transit signal flexible cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103700435A true CN103700435A (en) | 2014-04-02 |
| CN103700435B CN103700435B (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310653561.7A Active CN103700435B (en) | 2012-06-29 | 2012-06-29 | Fire safe type railroad communications flexible cable |
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| Country | Link |
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| CN (1) | CN103700435B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158086A (en) * | 2015-04-28 | 2016-11-23 | 住友电气工业株式会社 | Insulated electric conductor and manufacture method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4659871A (en) * | 1982-10-01 | 1987-04-21 | Raychem Limited | Cable with flame retarded cladding |
| CN200965811Y (en) * | 2006-10-19 | 2007-10-24 | 天津金山电线电缆股份有限公司 | Fire-resisting zero halogen low smoke flame retardant cable |
| CN201430024Y (en) * | 2009-06-11 | 2010-03-24 | 扬州市金阳光电缆有限公司 | Fire-resistant and explosion-proof signal cable for coal mine safety system sensor |
| CN101770837A (en) * | 2009-01-03 | 2010-07-07 | 安徽特力电缆有限公司 | Manufacturing method of fire-fighting cable |
| CN102364587A (en) * | 2011-10-25 | 2012-02-29 | 江苏亨通线缆科技有限公司 | Low-attenuation electric wire cable |
-
2012
- 2012-06-29 CN CN201310653561.7A patent/CN103700435B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4659871A (en) * | 1982-10-01 | 1987-04-21 | Raychem Limited | Cable with flame retarded cladding |
| CN200965811Y (en) * | 2006-10-19 | 2007-10-24 | 天津金山电线电缆股份有限公司 | Fire-resisting zero halogen low smoke flame retardant cable |
| CN101770837A (en) * | 2009-01-03 | 2010-07-07 | 安徽特力电缆有限公司 | Manufacturing method of fire-fighting cable |
| CN201430024Y (en) * | 2009-06-11 | 2010-03-24 | 扬州市金阳光电缆有限公司 | Fire-resistant and explosion-proof signal cable for coal mine safety system sensor |
| CN102364587A (en) * | 2011-10-25 | 2012-02-29 | 江苏亨通线缆科技有限公司 | Low-attenuation electric wire cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158086A (en) * | 2015-04-28 | 2016-11-23 | 住友电气工业株式会社 | Insulated electric conductor and manufacture method thereof |
| CN106158086B (en) * | 2015-04-28 | 2018-11-13 | 住友电气工业株式会社 | Insulated electric conductor and its manufacturing method |
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| Publication number | Publication date |
|---|---|
| CN103700435B (en) | 2017-04-05 |
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