CN102855984A - Fireproof and flame-retarding shield signal cable - Google Patents
Fireproof and flame-retarding shield signal cable Download PDFInfo
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- CN102855984A CN102855984A CN 201210319848 CN201210319848A CN102855984A CN 102855984 A CN102855984 A CN 102855984A CN 201210319848 CN201210319848 CN 201210319848 CN 201210319848 A CN201210319848 A CN 201210319848A CN 102855984 A CN102855984 A CN 102855984A
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Abstract
The invention discloses a fireproof and flame-retarding shield signal cable, belonging to the technical field of a cable. The fireproof and flame-retarding shield signal cable comprises a cable core and an outer sheath; the cable core is formed by stranding a plurality of big and small wire groups, wherein big and small wire groups are formed by stranding four insulation cores respectively and then strapped by an alkali-free glass wire ribbon; an internal shield layer, a polyester band coating layer, and a halogen-free low-smoke and flame-retarding polyolefin internal sheath are further arranged on the big wire groups; the internal shield layer is arranged in the middles of the polyester band coating layer and the halogen-free low-smoke and flame-retarding polyolefin internal sheath; the insulation core is formed by extruding a polyethylene insulation layer material on an oxygen-free round copper wire conductor; an aluminum hydroxide glue fire-isolating layer, a mica tape fire-resisting layer, a flame-retarding coating band and an aluminum-plastic composite shield layer are orderly arranged on the cable core; the halogen-free low-smoke and flame-retarding polyolefin internal sheath is extruded on the composite band shield layer. The fireproof and flame-retarding shield signal cable is reasonable and simple in structure, extract and stable in signal transmission and can resist electromagnetic interference.
Description
Technical field
The present invention relates to a kind of cable, particularly have the structure of the signal cable of fire resistant flame retardant shielding, belong to the cable technology field.
Background technology
Existing fire resistance signal cable is made of conductor, insulating barrier, flame retardant coating, screen and oversheath etc., and wrapped mica brings the realization fire resistance on the flame retardant coating employing insulated wire cores, this structural requirement thickness of insulating layer thickening, high material consumption.Use in the urban track traffic environment, in case catch fire in the space of sealing, cable will be easy to by scaling loss, destroys, and can not play guaranteeing role to signals security transmission and device security.In addition, cable is in burning, and insulating barrier all burnouts, and the structure of cable can change, thereby has changed the right fixedly pitch size of line, and the dielectric constant of cable is also along with change, so that cable can not guarantee the signal transmission accurately in burning.Along with the development of society, urban track traffic is risen energetically, track traffic exists that flow of the people is large, channel outlet relatively less, little situation, such as breaking out of fire, consequence is very serious, causes great loss for the people's life and property.
Summary of the invention
Purpose of the present invention provides a kind of fire resistant flame retardant advantages of good shielding performance signal cable exactly for satisfying the needed cable of track traffic.
The object of the present invention is achieved like this, the fire resistant flame retardant signal shielding cable, comprise cable core and oversheath, described cable core is by some large, little line group is twisted into cable core, greatly, little line group is thoroughly done away with the edge core by four respectively and is tied up with the alkali-free glass wool band stranded the composition afterwards, also be provided with internal shield on the large line group, polyester band covering, the halogen-free and low-smoke flame-retardant polyolefin inner sheath, internal shield is arranged in the middle of polyester band covering and the halogen-free and low-smoke flame-retardant polyolefin inner sheath, described insulated wire cores consists of by extruding the polyethylene insulation layer material on the anaerobic round copper wire conductor, be provided with successively aluminium hydroxide sizing material refuge floor on the described cable core, the mica tape flame retardant coating, fire-retardant band, the aluminium-plastic tape screen extrudes the halogen-free and low-smoke flame-retardant polyolefin oversheath at the composite band screen.The ratio of described large and small line group is at least 2:1.Described internal shield is made of wrapped copper strips.
The present invention is rational in infrastructure simple, and insulated wire cores guarantees that by extruding the polyethylene insulation layer material on the anaerobic round copper wire conductor transmission performance of cable is stable, and adopt the polyethylene foamed Insulation Material to insulate, so that insulated wire cores has high foaming rate, mechanical strength is high, and cable has low electric capacity, low decay.The line group adopts the quad structure, guarantees the electric property of line group, satisfies the different transmission performance requirements of cable.Internal shield adopts the copper strip shielding structure, transmits simultaneously the requirement of same signal to satisfy cable.The line group is twisted into cable core ties up with the alkali-free glass wool band, can guarantee the Stability Analysis of Structures of cable core, be conducive to improve cross-talk index and the interference free performance of cable.
Adopt refuge floor, play the fire insulation effect, decompose when the aluminium hydroxide sizing material is heated, discharge the crystallization water and heat absorption, and form a cover layer on cable core layer surface, effect heat insulation, oxygen barrier that cover layer can play is protected the primary insulation organic substance.Flame retardant coating adopts Mica tape, and whole cable is played fire-resistant effect.Adopt the aluminium-plastic tape shielding both to play total shielding action and also played good heat insulation, oxygen barrier effect, strengthened the fire resistance of cable.Inner/outer sheath all adopts halogen-free and low-smoke flame-retardant polyolefin to extrude, and the rate of fire travel in the time of can slowing down cable fire prolongs operating time of fire-resisting cable, can guarantee the signal transmission, reduces the loss that causes to the people's life and property because of breaking out of fire.
Description of drawings
Fig. 1 is structural representation of the present invention;
Among the figure: 1 conductor, 2 insulating barriers, 3 alkali-free glass wool bands, 4 polyester bands, 5 internal shields, 6 inner sheaths, 7 refuge floors, 8 mica tape flame retardant coatings, 9 fire-retardant bands, 10 aluminium-plastic tape screens, 11 oversheaths.
Embodiment
The fire resistant flame retardant signal shielding cable is comprised of cable core and oversheath etc., and cable core is twisted into cable core by some large and small line groups, and the ratio of large and small line group is at least 2:1.Greatly, little line group is thoroughly done away with the edge core by four respectively and is tied up with the alkali-free glass wool band stranded the composition afterwards, also be provided with internal shield on the large line group, polyester band covering, the halogen-free and low-smoke flame-retardant polyolefin inner sheath, internal shield is arranged in the middle of polyester band covering and the halogen-free and low-smoke flame-retardant polyolefin inner sheath, described insulated wire cores consists of by extruding the polyethylene insulation layer material on the anaerobic round copper wire conductor, be provided with successively aluminium hydroxide sizing material refuge floor on the described cable core, the mica tape flame retardant coating, fire-retardant band, the aluminium-plastic tape screen extrudes the halogen-free and low-smoke flame-retardant polyolefin oversheath at the composite band screen.
Claims (2)
1. fire resistant flame retardant signal shielding cable, comprise cable core and oversheath, described cable core is by some large, little line group is twisted into cable core, greatly, little line group is thoroughly done away with the edge core by four respectively and is tied up with the alkali-free glass wool band stranded the composition afterwards, also be provided with internal shield on the large line group, polyester band covering, the halogen-free and low-smoke flame-retardant polyolefin inner sheath, internal shield is arranged in the middle of polyester band covering and the halogen-free and low-smoke flame-retardant polyolefin inner sheath, described insulated wire cores consists of by extruding the polyethylene insulation layer material on the anaerobic round copper wire conductor, be provided with successively aluminium hydroxide sizing material refuge floor on the described cable core, the mica tape flame retardant coating, fire-retardant band, the aluminium-plastic tape screen extrudes the halogen-free and low-smoke flame-retardant polyolefin oversheath at the composite band screen.
2. fire resistant flame retardant signal shielding cable according to claim 1 is characterized in that, the ratio of described large and small line group is at least 2:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210319848 CN102855984A (en) | 2012-09-03 | 2012-09-03 | Fireproof and flame-retarding shield signal cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210319848 CN102855984A (en) | 2012-09-03 | 2012-09-03 | Fireproof and flame-retarding shield signal cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102855984A true CN102855984A (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210319848 Pending CN102855984A (en) | 2012-09-03 | 2012-09-03 | Fireproof and flame-retarding shield signal cable |
Country Status (1)
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| CN (1) | CN102855984A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385746A (en) * | 2014-11-17 | 2015-03-04 | 上海特安纶纤维有限公司 | Protective fabric of automatic welding gun industrial robot and preparation method thereof |
| CN106816209A (en) * | 2015-11-27 | 2017-06-09 | 安徽中邦特种电缆科技有限公司 | A kind of silicon rubber insulation shielding control cable |
| CN107958740A (en) * | 2017-10-13 | 2018-04-24 | 安徽庆华电缆有限公司 | A kind of polyvinyl chloride insulation and sheath fire-resistant cable |
| CN111161915A (en) * | 2018-11-08 | 2020-05-15 | 普睿司曼股份公司 | Fire resistant signaling cable for railway applications |
-
2012
- 2012-09-03 CN CN 201210319848 patent/CN102855984A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385746A (en) * | 2014-11-17 | 2015-03-04 | 上海特安纶纤维有限公司 | Protective fabric of automatic welding gun industrial robot and preparation method thereof |
| CN104385746B (en) * | 2014-11-17 | 2017-06-16 | 上海特安纶纤维有限公司 | Automatic welding gun industrial robot protective fabric and preparation method thereof |
| CN106816209A (en) * | 2015-11-27 | 2017-06-09 | 安徽中邦特种电缆科技有限公司 | A kind of silicon rubber insulation shielding control cable |
| CN107958740A (en) * | 2017-10-13 | 2018-04-24 | 安徽庆华电缆有限公司 | A kind of polyvinyl chloride insulation and sheath fire-resistant cable |
| CN107958740B (en) * | 2017-10-13 | 2019-10-29 | 安徽庆华电缆有限公司 | A kind of polyvinyl chloride insulation and sheath fire-resistant cable |
| CN111161915A (en) * | 2018-11-08 | 2020-05-15 | 普睿司曼股份公司 | Fire resistant signaling cable for railway applications |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130102 |