CN202404982U - Cable for high-rise buildings - Google Patents
Cable for high-rise buildings Download PDFInfo
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- CN202404982U CN202404982U CN2012200331585U CN201220033158U CN202404982U CN 202404982 U CN202404982 U CN 202404982U CN 2012200331585 U CN2012200331585 U CN 2012200331585U CN 201220033158 U CN201220033158 U CN 201220033158U CN 202404982 U CN202404982 U CN 202404982U
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- cable
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- retardant
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Abstract
The utility model relates to a cable for high-rise buildings, which comprises a cable inner core, a cable inner sheath, a steel tap armoring, a flame-retardant layer, a cable outer sheath and a tension bearing steel cable sequentially from inside to outside. The cable inner core comprises a flame-retardant inner core and sideline cores, each sideline core consists of a plurality of copper wires, the cross section of each sideline core is in a sector structure, the outer surface of each sideline core is wrapped by an insulating layer, the flame-retardant inner core is positioned in the center of the circular cross section of the cable and in a circular structure, and a filler layer is arranged in a gap between the flame-retardant inner core and each sideline core. Each of the insulating layers, the filler layers, the cable inner sheath, the flame-retardant layer and the cable outer sheath is made of nano composite plastic. The cross sectional area of the tension bearing steel cable ranges from one tenth to one twentieth of the sum of the cross sectional areas of the sideline cores, and the interior of the tension bearing steel cable has longitudinal shrinkage stress. In conclusion, the cable for high-rise buildings has the advantages of flame retardation, armoring and tension resistance and can stably meet the application requirements of the high-rise buildings on burying, flame retardation and vertical suspension for a long time.
Description
Technical field
The utility model relates to a kind of skyscraper and uses cable, belongs to the cable technology field.
Background technology
At present, band-armored is widely used in electric power and carries, and along with the increase of story height, the band-armored that was used for tiling originally appears at the occasion of vertical hanging more and more.The purpose of steel-tape armouring be for reduce in the work progress with use in sharp-pointed article, for example pick and shovel directly destroy cable; Avoid because the generation of phenomenons such as the electric leakage that the cable insulation damage layer causes, puncture; In this simultaneously, steel-tape armouring can also protect cable to avoid for example biting of mouse of rodent, because cable is embedded in underground; The support of cable need not realize that therefore the tensile property of this cable does not often need unsettled cable so big through the pulling force of self.At the position of cable vertical hanging, cable produces internal tension under the effect of self gravitation, and this part pulling force is often concentrated and put on cable inner conductive copper cash, through long accumulation effect, the conductive capability of cable is caused adverse influence.At the unsettled position of cable; Between the armouring tape because be spiral parcel; Self be difficult to realize the effect of tension, and the weight of steel-tape armouring self can increase the weight of cable again, and then increase the destructiveness of cable internal tension; Steel-tape armouring also can be applied to the outer protective jacket layer with gravity, and the outer protective jacket layer also can breakoff phenomenons such as cracking, be full of cracks occur under the tension for a long time.Often horizontal direction is very narrow and small in the space of cable laying in skyscraper; And it is very high in vertical direction; When fire took place, this long and narrow space had just formed the so-called stack effect that helps intensity of a fire burning, therefore; Under this rough sledding, the fire resistance of traditional cable has been difficult to satisfy the needs of skyscraper.
Summary of the invention
Defective to traditional band-armored tension and fire resistance in the skyscraper application process; The utility model patent is improved fire resistance, the tensile property of traditional band-armored; Under the prerequisite of the armouring effect that keeps original steel-tape armouring; The main employing bears wirerope and shares the internal tension of cable in the upright position, and next nano composite plastics that adopts fire-retardant inner core, flame-retardant layer and have an anti-flaming function improves the flame retardant effect of cable in narrow and small slender space.
In order to reach above-mentioned utility model purpose; The technical scheme that the utility model adopted is: a kind of skyscraper is used cable; Constitute by cable inner core, cable sheath, steel-tape armouring, flame-retardant layer and protective coverings of cable successively from inside to outside; Between protective coverings of cable and steel-tape armouring, bear wirerope, bear wirerope and be close to steel-tape armouring, the cable inner core comprises fire-retardant inner core and side line core; The side line core by the multiply copper cash form, cross section is sector structure, the even wrap insulate layer of outer surface, there is packed layer in the gap between fire-retardant inner core and the every side line core.
Above-mentioned fire-retardant inner core is positioned at the circular cross section center of cable.
Above-mentioned fire-retardant inner core is circular, and the cross-sectional area of fire-retardant inner core is 1/5th to 1/4th of all side line core cross-sectional area summations.
The above-mentioned cross-sectional area summation that bears wirerope is 1/10th to 1/20th of a side line core cross-sectional area summation.
The thickness of above-mentioned flame-retardant layer bears wirerope and embeds flame-retardant layer fully greater than the diameter that bears wirerope.
The skyscraper of the utility model patent structurally adopts fire-retardant inner core, flame-retardant layer and bears wirerope with cable, and following technique effect is arranged:
1) fire-retardant inner core is in the cable cross-section center, has played the space between fire-retardant and the increase side line core, has reduced the disaster hidden-trouble that causes because of short circuit;
2) bear wirerope and be in tensioned state, guarantee cable in plumbness, bear wirerope and can share the cable deadweight;
3) flame-retardant layer provides the space of placing for bearing wirerope on the one hand, has stoped the continuation development and the spreading to cable inside of external flame on the one hand effectively.
Above-mentioned three technique effects can both make the utility model satisfy the needs that skyscraper uses, and have strengthened the vertical hanging performance of cable, have increased the fire resistance of cable.Aspect material, partly replace antimony oxide in addition, played fire-retardant effect, also reduced the cost of cable-flame retardant agent aspect simultaneously through nano imvite and nano-calcium carbonate.
Compared with prior art; The utility model adopts and bears the tensile property that wirerope has improved cable; Secondly in order to improve the fire resistance of cable; Above-mentioned insulating barrier, cable sheath and protective coverings of cable all adopt nano composite plastics to process, and nano composite plastics is produced and passed through in the granulation process to add nano imvite, antimony oxide, nano-calcium carbonate, powdered whiting, makes plastic cement have fire-retardant performance.
Description of drawings
Fig. 1 is the utility model structural representation;
Reference numeral: 1-protective coverings of cable, 2-bear wirerope, 3-flame-retardant layer, 4-steel-tape armouring, 5-cable sheath, 6-side line core, the fire-retardant inner core of 7-, 8-insulating barrier, 9-packed layer.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Referring to shown in Figure 1, in the utility model structure, comprise protective coverings of cable 1, bear wirerope 2, flame-retardant layer 3, steel-tape armouring 4, cable sheath 5, side line core 6, fire-retardant inner core 7, insulating barrier 8, packed layer 9.Protective coverings of cable 1 parcel flame-retardant layer 3 bears wirerope 2 and is close to steel-tape armouring 4, and the thickness of flame-retardant layer 3 is to bear 1.2 times of wirerope 2 diameters; Bear wirerope 2 and embed flame-retardant layer 3 fully, flame-retardant layer 3 is close to steel-tape armouring 4, and steel-tape armouring 4 adopts ribbon spiral to twine; Fire-retardant inner core 7 is positioned at the cable cross-section symmetrical centre; The cross-sectional area of fire-retardant inner core is 1/4th of all side line core cross-sectional area summations, the side line core 6 outer surface wrap insulate layers 8 of conduction, and the side line core 6 of conduction is fan-shaped; The side line core 6 of four bursts of conductions is arranged around the fire-retardant inner core 7, between fire-retardant inner core 7 and four strands of side line cores 6 packed layer 9 is arranged.
Further; The cross-sectional area summation that bears wirerope 2 equals 1/12nd of side line core 6 cross-sectional area summations; Bear the wirerope 2 inner stress that vertically shrink that exist; When cable was in level, the size of said stress equaled 30 newton, and this just guarantees to bear wirerope can initiatively share the inner pulling force of cable.
Further; Protective coverings of cable 1 material adopts nano composite material; The composition of this nano combined PVC plastics comprises: PVC, nano-calcium carbonate, powdered whiting, DOP, stabilizer, cloudy surface agent, antimony oxide nano imvite, the mechanical test National standard GB/T8815-2008 of the nano combined PVC plastics of this composition.The fire resistance of protective coverings of cable 1 can guarantee effectively that cable can not become new burning things which may cause a fire disaster in narrow and small elongated space, and then improves the safe application performance of cable.
Further, cable sheath 5 adopts nano composite material with insulating barrier 8 materials, and the composition of this nano combined PVC plastics comprises: PVC, nano-calcium carbonate, powdered whiting, DOP, stabilizer, cloudy surface agent, antimony oxide and nano imvite.The mechanical test National standard GB/T8815-2008 of the nano combined PVC plastics of this composition, the fire resistance of cable sheath 5 and insulating barrier 8 also can suppress to conduct electricity side line core 6 effectively because the fire that accidentalia causes.
Further, the composite material of flame-retardant layer 3 and packed layer 9 employing PVC plastics and aluminium hydroxide, the material of fire-retardant inner core 7 is an aluminium hydroxide.The PVC plastics play the effect of typing, and the aluminium hydroxide decomposes discharges steam, can suppress to conduct electricity side line core 6 effectively because the fire that accidentalia causes.
Certainly; The utility model also can have other various embodiments; Under the situation that does not deviate from the utility model spirit and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the utility model.
Claims (5)
1. a skyscraper is used cable; It is characterized in that: said skyscraper is made up of cable inner core, cable sheath, steel-tape armouring, flame-retardant layer and protective coverings of cable with cable from inside to outside successively; Between said protective coverings of cable and steel-tape armouring, bear wirerope; Bear wirerope and be close to steel-tape armouring; Said cable inner core comprises fire-retardant inner core and side line core, said side line core by the multiply copper cash form, cross section is sector structure, the even wrap insulate layer of outer surface, there is packed layer in the gap between said fire-retardant inner core and the every side line core.
2. skyscraper as claimed in claim 1 is used cable, it is characterized in that: said fire-retardant inner core is positioned at the circular cross section center of cable.
3. skyscraper as claimed in claim 1 is used cable, it is characterized in that: said fire-retardant inner core is for circular, and the cross-sectional area of fire-retardant inner core is 1/5th to 1/4th of all side line core cross-sectional area summations.
4. skyscraper as claimed in claim 1 is used cable, it is characterized in that: the said cross-sectional area summation that bears wirerope is 1/10th to 1/20th of a side line core cross-sectional area summation.
5. skyscraper as claimed in claim 1 is used cable, it is characterized in that: the thickness of said flame-retardant layer bears wirerope and embeds flame-retardant layer fully greater than the diameter that bears wirerope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200331585U CN202404982U (en) | 2012-02-02 | 2012-02-02 | Cable for high-rise buildings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200331585U CN202404982U (en) | 2012-02-02 | 2012-02-02 | Cable for high-rise buildings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202404982U true CN202404982U (en) | 2012-08-29 |
Family
ID=46702614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200331585U Expired - Fee Related CN202404982U (en) | 2012-02-02 | 2012-02-02 | Cable for high-rise buildings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202404982U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617834A (en) * | 2013-12-06 | 2014-03-05 | 上海特种电线电缆（集团）有限公司 | Nanometer type super fire-resistant power cable |
-
2012
- 2012-02-02 CN CN2012200331585U patent/CN202404982U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617834A (en) * | 2013-12-06 | 2014-03-05 | 上海特种电线电缆（集团）有限公司 | Nanometer type super fire-resistant power cable |
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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: 20120829 Termination date: 20160202 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |