CN203503336U - Fire disaster-resisting precision cable - Google Patents
Fire disaster-resisting precision cable Download PDFInfo
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- CN203503336U CN203503336U CN201320628644.6U CN201320628644U CN203503336U CN 203503336 U CN203503336 U CN 203503336U CN 201320628644 U CN201320628644 U CN 201320628644U CN 203503336 U CN203503336 U CN 203503336U
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Abstract
The utility model relates to a fire disaster-resisting precision cable, which comprises a cable outer sheath layer, a steel tape-armored layer, a cable inner protection layer and a cable inner core. The cable inner core comprises a burning ceramic material supporting inner core, expandable graphite strips, insulation layers, inorganic filler layers and precision metal wire inner cores; the precision metal wire inner cores are coated by the insulation layers; the cable inner protection layer is tightly attached to the cable inner core; the steel tape-armored layer is tightly attached to the cable inner protection layer; the cable outer sheath layer is tightly attached to the steel tape-armored layer; each expandable graphite strip is located between adjacent precision metal wire inner cores; the expandable graphite strip has a rectangular cross section; the inorganic filler layers fill gaps among the precision metal wire inner cores, the expandable graphite strips and the burning ceramic material supporting inner core; and the burning ceramic material supporting inner core is located in the geometric center of the cable cross section. According to the fire disaster-resisting precision cable, conductive and refractory properties of the cable can be effectively improved.
Description
Technical field
The utility model relates to cable technology field, relates to or rather a kind of accurate cable of fire-resistant calamity.
Background technology
Cable conduction is to realize by metal material, cable metal material is to be that circular metal wire rod spiral winding is made by many sliver transvers sections, by extrusion die, multiply metal wire rod is extruded distortion, twists cross section processed and be the strand structure processed of the shapes such as fan-shaped, watt shape, circle.Circular metal wire rod strand is built in together, in the middle of adjacent wire rod, can there is space, because space can cause metal wire rod chap, the outer jacket that outside needs and the material usage of steel-tape armouring layer also increase thereupon, cause cable to become heavy and chap, improve cable cost, improved logistics cost, increased difficulty of construction.On the other hand, in the middle of adjacent wire rod, can there is space, also can hinder electric current flowing between adjacent wire, weaken the electric conductivity of metal material.
Edge at cable with metal material, the cross section of metal wire rod is rounded, and edge just there will be the irregularly shaped of fluctuating, and in high-tension environment for use, the projection at edge easily causes point discharge, causes accident.
In addition, in cable, the gap of conductor is plastic material, plastic material volume in combustion process can dwindle and powder, and therefore, can make to come in contact and cause short circuit between adjacent conductor, like this, often fire and short circuit become two positive correlation factors in cable fault process, that is to say, fire causes short circuit, short circuit simultaneously causes again fire, and both promote by mutual forward.
As can be seen here, above-mentioned existing cable still has many defects, and is urgently improved.
Because the defect that above-mentioned existing cable exists, the design people is based on being engaged in this type of product design manufacture for many years, amass and have abundant practical experience and professional knowledge, positive research and innovation in addition, to founding a kind of accurate cable of fire-resistant calamity, can improve the general molding structure of existing cable on the market, make it have more competitiveness.Through constantly research, design, and after repeatedly studying sample and improving, finally create the utility model having practical value.
Summary of the invention
Technical problem underlying to be solved in the utility model is, overcomes the defect that existing cable exists, and improves tightness degree, electric conductivity and the smooth degree of cable, and overcomes fire in existing cable and cause short circuit, short circuit simultaneously to cause again the defect of fire.
The utility model solves its technical problem underlying and realizes by the following technical solutions.Accurate cable according to a kind of fire-resistant calamity the utility model proposes, comprise cable jacket layer, steel-tape armouring layer, cable sheath and cable inner core, wherein, cable inner core comprises that burning can ceramic materials for support inner core, expansible graphite bar, insulating barrier, Inorganic Fillers Filled layer and precision metallic wire rod inner core, insulating barrier parcel precision metallic wire rod inner core, cable sheath is close to cable inner core, steel-tape armouring layer is close to cable sheath, cable jacket layer is close to steel-tape armouring layer, expansible graphite bar is between adjacent precision metallic wire rod inner core, the cross section of expansible graphite bar is rectangular, Inorganic Fillers Filled layer is filled precision metallic wire rod inner core, expansible graphite bar and the burning space between can ceramic materials for support inner core, precision metallic wire rod inner core is comprised of strand wire strand system, precision metallic wire rod inner core is by electric main, edge voids electric wire and intermediate gaps electric wire strand system form, electric main cross section is rounded, intermediate gaps wire cross-section is triangular in shape, intermediate gaps electric wire is positioned at the position, space of adjacent three electric mains, edge voids wire cross-section is triangular in shape, edge voids electric wire is positioned at the position, space of the electric main of adjacent two edges edge.
Better, burning can ceramic materials for support inner core be positioned at the geometric center of cable cross-section.
The accurate cable of fire-resistant calamity described in the utility model, the beneficial effect of its generation is: can adopt the burning silastic material of ceramic afterwards by ceramic materials for support inner core, this material shows the flexility of plastic material under normal operation, silicon rubber ceramic after burning, volume can not subside, and therefore can play the effect of supporting and separating conductor; Expansible graphite strip adoption expansible graphite material, this material sharply expands under flame environment, can so that between heart yearn mutually away from, reduce the danger of short circuit; In addition, Inorganic Fillers Filled layer also can stop the cable conductor after burning mutually to touch, and under normal circumstances, Inorganic Fillers Filled layer has slidably property, can not cause the rigidity of cable too strong, causes being difficult to bending; In precision metallic wire rod inner core strand process processed, can there is corresponding deformation in each strand of electric wire, space between each strand material is further reduced, adopt the position, space of adjacent three electric mains of intermediate gaps wire pair to fill, effectively improved the tightness degree of metal material, and then improved the electric conductivity of cable, and adopt the position, space of the electric main of edge voids wire pair adjacent two edges edge to fill, effectively improved the smooth of the edge degree of metal wire rod strand structure processed.
Accompanying drawing explanation
Fig. 1 is the schematic cross-section of embodiment of the present utility model.
Fig. 2 is the schematic cross-section of precision metallic wire rod inner core of the present utility model.
Description of reference numerals: 1, cable jacket layer; 2, steel-tape armouring layer; 3, cable sheath; 4, burning can ceramic materials for support inner core; 5, expansible graphite bar; 6, insulating barrier; 7, Inorganic Fillers Filled layer; 8, electric main; 9, edge voids electric wire; 10, intermediate gaps electric wire.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, its embodiment, structure, feature and effect thereof to according to the utility model proposes, be described in detail as follows.
Refer to shown in Fig. 1 and Fig. 2, the accurate cable of a kind of fire-resistant calamity of the present utility model, comprise cable jacket layer 1, steel-tape armouring layer 2, cable sheath 3 and cable inner core, wherein, cable inner core comprises that burning can ceramic materials for support inner core 4, expansible graphite bar 5, insulating barrier 6, Inorganic Fillers Filled layer 7 and precision metallic wire rod inner core, insulating barrier 6 parcel precision metallic wire rod inner cores, cable sheath 3 is close to cable inner core, steel-tape armouring layer 2 is close to cable sheath 3, cable jacket layer 1 is close to steel-tape armouring layer 2, expansible graphite bar 5 is between adjacent precision metallic wire rod inner core, the cross section of expansible graphite bar 5 is rectangular, Inorganic Fillers Filled layer 7 is filled precision metallic wire rod inner core, expansible graphite bar 5 and the burning space between can ceramic materials for support inner core 4, precision metallic wire rod inner core is comprised of strand wire strand system, precision metallic wire rod inner core is by electric main 8, edge voids electric wire 9 and intermediate gaps electric wire 10 strand systems form, electric main 8 cross sections are rounded, intermediate gaps electric wire 10 cross sections are triangular in shape, intermediate gaps electric wire 10 is positioned at the position, space of adjacent three electric mains 8, edge voids electric wire 9 cross sections are triangular in shape, edge voids electric wire 9 is positioned at the position, space of the electric main 8 of adjacent two edges edge.Burning can ceramic materials for support inner core 4 be positioned at the geometric center of cable cross-section.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all still belong in the scope of technical solutions of the utility model.
Claims (2)
1. the accurate cable of a fire-resistant calamity, it is characterized in that, the accurate cable of described fire-resistant calamity comprises cable jacket layer, steel-tape armouring layer, cable sheath and cable inner core, wherein, described cable inner core comprises that burning can ceramic materials for support inner core, expansible graphite bar, insulating barrier, Inorganic Fillers Filled layer and precision metallic wire rod inner core, described insulating barrier parcel precision metallic wire rod inner core, cable sheath is close to cable inner core, steel-tape armouring layer is close to cable sheath, cable jacket layer is close to steel-tape armouring layer, described expansible graphite bar is between adjacent precision metallic wire rod inner core, the cross section of described expansible graphite bar is rectangular, described Inorganic Fillers Filled layer is filled precision metallic wire rod inner core, expansible graphite bar and the burning space between can ceramic materials for support inner core, described precision metallic wire rod inner core is comprised of strand wire strand system, described precision metallic wire rod inner core is by electric main, edge voids electric wire and intermediate gaps electric wire strand system form, described electric main cross section is rounded, described intermediate gaps wire cross-section is triangular in shape, described intermediate gaps electric wire is positioned at the position, space of adjacent three electric mains, described edge voids wire cross-section is triangular in shape, described edge voids electric wire is positioned at the position, space of the electric main of adjacent two edges edge.
2. the accurate cable of fire-resistant calamity according to claim 1, is characterized in that, described burning can ceramic materials for support inner core be positioned at the geometric center of cable cross-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320628644.6U CN203503336U (en) | 2013-10-12 | 2013-10-12 | Fire disaster-resisting precision cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320628644.6U CN203503336U (en) | 2013-10-12 | 2013-10-12 | Fire disaster-resisting precision cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203503336U true CN203503336U (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320628644.6U Expired - Fee Related CN203503336U (en) | 2013-10-12 | 2013-10-12 | Fire disaster-resisting precision cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN203503336U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036669A (en) * | 2018-08-04 | 2018-12-18 | 安徽华能电缆集团有限公司 | A kind of fire resisting instrument cable |
| CN110517825A (en) * | 2019-08-30 | 2019-11-29 | 安徽电缆股份有限公司 | A kind of environment-friendly type fire resistant flame retardant cable and preparation method thereof |
| CN110517816A (en) * | 2019-08-30 | 2019-11-29 | 安徽电缆股份有限公司 | A kind of flame-retardant environment-friendly type computer cable |
-
2013
- 2013-10-12 CN CN201320628644.6U patent/CN203503336U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036669A (en) * | 2018-08-04 | 2018-12-18 | 安徽华能电缆集团有限公司 | A kind of fire resisting instrument cable |
| CN110517825A (en) * | 2019-08-30 | 2019-11-29 | 安徽电缆股份有限公司 | A kind of environment-friendly type fire resistant flame retardant cable and preparation method thereof |
| CN110517816A (en) * | 2019-08-30 | 2019-11-29 | 安徽电缆股份有限公司 | A kind of flame-retardant environment-friendly type computer cable |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20141012 |
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| EXPY | Termination of patent right or utility model |