CN203659483U - Flameproof precision cable - Google Patents
Flameproof precision cable Download PDFInfo
- Publication number
- CN203659483U CN203659483U CN201320818746.4U CN201320818746U CN203659483U CN 203659483 U CN203659483 U CN 203659483U CN 201320818746 U CN201320818746 U CN 201320818746U CN 203659483 U CN203659483 U CN 203659483U
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- cable
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Abstract
The utility model relates to a flameproof precision cable, which comprises a cable jacket layer, a steel wire braided layer, a cable inner sheath layer and a cable inner core. The cable inner core comprises a calcium oxide filling layer, combustion ceramizable material supporting bars, an insulating layer and precision metal wire inner cores. The precision metal wire inner cores are wrapped by the insulating layer. The cable inner sheath layer is arranged to cling to the cable inner core. The steel wire braided layer is arranged to cling to the cable inner sheath layer. The cable jacket layer is arranged to cling to the steel wire braided layer. Each combustion ceramizable material supporting bar is arranged between every two adjacent precision metal wire inner cores. The two ends of the cross section of each combustion ceramizable material supporting bar are of a circular structure respectively and the middle part of the cross section of the combustion ceramizable material supporting bar is of a square structure. The calcium oxide filling layer is filled in gaps among the precision metal wire inner cores, the combustion ceramizable material supporting bars and the cable inner sheath layer. According to the technical scheme of the utility model, both the conductive performance and the flameproof performance of the cable are 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 burning.
Background technology
Cable conduction is that the cable inner core by comprising metal material is realized, cable metal material is to be that circular metal wire rod spiral winding is made by many sliver transvers sections, pass through 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 outside required protective layer material consumption of metal wire rod increases thereupon, has improved cable cost; 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, in high-tension environment for use; the projection at edge easily causes point discharge, causes accident.On the other hand, in the middle of adjacent cable core, can there is space, packing material in space plastic material often, plastic material volume in combustion process can dwindle and powder, therefore, can make to come in contact between adjacent cable heart yearn, cause short circuit, short circuit simultaneously can cause again fire, if adopt in a large number inorganic filling material, this causes cable to become stiff, increases the difficulty of laying.
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, accumulation has abundant practical experience and professional knowledge, actively research and innovation in addition, to founding a kind of accurate cable of fire-resistant burning, 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.According to the accurate cable of a kind of fire-resistant burning the utility model proposes, comprise cable jacket layer, steel wire braid, cable sheath and cable inner core, wherein, cable inner core comprises calcium oxide packed layer, burning can ceramic materials for support bar, insulating barrier 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 wire braid is close to cable sheath, cable jacket layer is close to steel wire braid, burning can ceramic materials for support bar between adjacent precision metallic wire rod inner core, burning can ceramic materials for support bar cross section formed by the circular configuration at two and the square structure at middle part, calcium oxide packed layer is filled precision metallic wire rod inner core, burning can ceramic materials for support bar and cable sheath between space, precision metallic wire rod inner core is made up 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 composition, electric main cross section is rounded, intermediate gaps wire cross-section is rounded, 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.
The accurate cable of fire-resistant burning described in the utility model, the beneficial effect of its generation is: burning can ceramic materials for support bar between adjacent two cable cores, can fix the relative position of two cable cores, simultaneously, burning can ceramic materials for support strip adoption the silastic material of ceramic after burning, this material shows the flexility of plastic material under normal operation, silicon rubber ceramic after burning, volume can not subside, therefore can play the effect of supporting and separating cable core, burning can ceramic materials for support bar shape can effectively reduce the consumption of calcium oxide packed layer, the softness of support bar can guarantee the flexibility of cable, calcium oxide in calcium oxide packed layer can absorb airborne water and carbon dioxide, generate calcium hydroxide and calcium carbonate, calcium hydroxide and calcium carbonate can play the effect of solidifying to whole cable system, simultaneously, can also play the effect expanding outwardly to steel wire braid, in the time of breaking out of fire, effectively push each cable core open and fill up the volume minimizing after support bar burning, 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 improve 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 improve 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 wire braid; 3, cable sheath; 4, calcium oxide packed layer; 5, burning can ceramic materials for support bar; 6, insulating barrier; 7, electric main; 8, intermediate gaps electric wire; 9, edge voids electric wire.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to its embodiment, structure, feature and effect thereof 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 burning of the present utility model, comprise cable jacket layer 1, steel wire braid 2, cable sheath 3 and cable inner core, wherein, cable inner core comprises calcium oxide packed layer 4, burning can ceramic materials for support bar 5, insulating barrier 6 and precision metallic wire rod inner core, insulating barrier 6 wraps up precision metallic wire rod inner core, cable sheath 3 is close to cable inner core, steel wire braid 2 is close to cable sheath 3, cable jacket layer 1 is close to steel wire braid 2, burning can ceramic materials for support bar 5 between adjacent precision metallic wire rod inner core, burning can ceramic materials for support bar 5 cross section formed by the circular configuration at two and the square structure at middle part, calcium oxide packed layer 4 is filled precision metallic wire rod inner core, burning can ceramic materials for support bar 5 and cable sheath 3 between space, precision metallic wire rod inner core is made up of strand wire strand system, precision metallic wire rod inner core is by electric main 7, edge voids electric wire 9 and intermediate gaps electric wire 8 strand system compositions, electric main 7 cross sections are rounded, intermediate gaps electric wire 8 cross sections are rounded, intermediate gaps electric wire 8 is positioned at the position, space of adjacent three electric mains 7, 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 7 of adjacent two edges edge.
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 (1)
1. the accurate cable of a fire-resistant burning, it is characterized in that, the accurate cable of described fire-resistant burning comprises cable jacket layer, steel wire braid, cable sheath and cable inner core, wherein, described cable inner core comprises calcium oxide packed layer, burning can ceramic materials for support bar, insulating barrier and precision metallic wire rod inner core, described insulating barrier parcel precision metallic wire rod inner core, described cable sheath is close to cable inner core, described steel wire braid is close to cable sheath, described cable jacket layer is close to steel wire braid, described burning can ceramic materials for support bar between adjacent precision metallic wire rod inner core, described burning can ceramic materials for support bar cross section formed by the circular configuration at two and the square structure at middle part, described calcium oxide packed layer is filled precision metallic wire rod inner core, burning can ceramic materials for support bar and cable sheath between space, described precision metallic wire rod inner core is made up 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 composition, described electric main cross section is rounded, described intermediate gaps wire cross-section is rounded, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320818746.4U CN203659483U (en) | 2013-12-13 | 2013-12-13 | Flameproof precision cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320818746.4U CN203659483U (en) | 2013-12-13 | 2013-12-13 | Flameproof precision cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203659483U true CN203659483U (en) | 2014-06-18 |
Family
ID=50925847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320818746.4U Expired - Fee Related CN203659483U (en) | 2013-12-13 | 2013-12-13 | Flameproof precision cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203659483U (en) |
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2013
- 2013-12-13 CN CN201320818746.4U patent/CN203659483U/en not_active Expired - Fee Related
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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: 20140618 Termination date: 20141213 |
|
| EXPY | Termination of patent right or utility model |