CN201812533U - Fire resistant cable - Google Patents
Fire resistant cable Download PDFInfo
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- CN201812533U CN201812533U CN 201020289092 CN201020289092U CN201812533U CN 201812533 U CN201812533 U CN 201812533U CN 201020289092 CN201020289092 CN 201020289092 CN 201020289092 U CN201020289092 U CN 201020289092U CN 201812533 U CN201812533 U CN 201812533U
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- mica
- resisting cable
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Abstract
The utility model relates to an improved fire resistant cable, which is characterized in that a basalt braided sheath is arranged outside a mica layer of conductors. The cable has both functions of insulation and fire resistance. Since mica and basalt fibers can bear high temperature over 950 DEG C, are excellent insulating materials and simultaneously have excellent fire resistance performance, operating temperature of the cable after long-term work can be increased and can be over 950 DEG C in actual operation. Further, by the aid of the basalt fiber layer braided outside the mica layer, the cable keeps excellent fire resistance even after being shifted frequently, the structure of an insulating layer of the cable can be sound even when the cable is burned at high temperature, namely insulation and fire resistance performance of the cable under and after high temperature can be remained and the original characteristics can be kept. Particularly, after a fire resistant metal sleeve is added outside the braided sheath, the cable can bear shock, impact and water spraying, meets requirements for fire fighting rescue after fires, and can be used on mobile conditions when in fire or after fire.
Description
Technical field
Utility model is about the improvement to fire-resisting cable, relate in particular to a kind of can be used for mobile occasion, fire resistance superior, and can reusable fire-resisting cable.
Background technology
The fire-resisting cable operative norm mainly contains two classes at present: common fire-resisting cable, and 750 ℃ burnt 90 minutes, and cable does not puncture; Mineral insulated cable, 950 ℃ of burnings 180 minutes, cable does not puncture, and the after vibration 15 minutes of catching fire sprayed 15 minutes, and cable does not still puncture.Detect according to aforementioned cable fire resistance, fire-resisting cable can have three kinds of versions:
With magnesium oxide is the fire-resisting cable of insulating barrier overcoat copper pipe, typical case such as Chinese patent CN2432659 fireproof cable.Though this type of cable has fine fire resistance, and catch fire the process of suing and labouring and after still can use.But major defect is an insulating barrier is the rigid refractory material of magnesium oxide, and the cable bending property is poor, can only be used for fixing to lay occasion, can not be used for mobile occasion and use; Secondly, the manufacturing processing technic complexity needs special production equipment, cost cost height, and be subjected to manufacturing process constraint cable length shorter, and cause cable joint more, the water-proofing treatment of joint is difficulty comparatively; Besides, the in a single day damaged insulation property of copper pipe can descend rapidly, and insulation property also can sharply descend under the high temperature.Chinese patent CN201075312 mineral insulated cable, copper sheath adopt copper strips wraparound moulding argon arc longitudinal seam welding cover, though improved common mineral insulated cable production length issue, other shortcoming is not overcome yet.
Conductor outsourcing flame retardant coating, the typical case has mica insulation fire-resistant, typical structure: conductor+mica tape is wrapped+the insulation three-decker.Insulating barrier adopts cable customary insulation material-polyvinyl chloride or polyethylene usually, working temperature is low, be generally 70-90 ℃, the chance fire has melted and has become ashes, cause flame retardant coating-mica to lose outer protection, under the situation that cable is vibrated, cause the mica layer of efflorescence to come off, can not use when therefore putting out a fire; Same often moving also can cause mica layer to come off, and cable loses the insulated fireproof performance once burning, causes cable breakdown, therefore can not be used for frequent mobile occasion usually.Press fire-resisting cable among the Chinese patent CN2814625, its structure is conductor+crosslinked polyetylene insulated+copper strips screen+mica tape+alkali-free glass wool band, cause conductor and braiding to produce the gap between the glassy layer in crosslinked polyetylene insulated thawing after the burning, cause flame retardant coating loosening, the glass fiber band does not have the mica tape effect of holding tightly; Simultaneously because glass fiber band refractoriness is not high, and the mica layer of efflorescence can not be waited until effective protection behind high-temp combustion, equally can not be in the process of suing and labouring of catching fire, and use the back that catches fire.
Porcelain silicone insulation fire-resisting cable is to extrude the fire-resistant silicon rubber that one deck is met high temperature energy potteryization outside conductor, and normal the use has soft insulating properties, and is transformed into self-supporting duricrust ceramic insulation shell after catching fire.Chinese patent CN101488374 insulation high temperature fire resisting electric cable made of soft ceramic for example; Chinese patent CN1671823 siloxane polymer; Chinese patent CN101794643A fireproof flexible soft cable; Chinese patent CN201134299 potteryization silicon rubber insulation fire-resistant cable; Chinese patent CN201449778U fire-proof shield flexible cable; Chinese patent CN201477935U small bore type fire-resisting cable; The applicant presses fire-resisting cable or the like in first to file CN200710190369.3.Above-mentioned cable refractory insulating layer becomes the ceramic-like duricrust after burning, owing to do not reach the sintering degree, still vibration that being unable to undergo catches fire sues and labours and trickle and mobile, can not be by the vibration fire resistance test, therefore also only can only be applicable to and fixedly lay occasion, still can not be used for mobile occasion and use, and use during fire fighting.
The applicant formerly applies for a patent the CN200510041195.5 fire-resisting cable, sets up inorganic fire-resistant expanding layer between mica refractory insulating layer and embossing metallic sheath, produce to expand by catching fire to hold mica tightly and reach and still can continue to use.But production process is many, the Costco Wholesale height, and be difficult to use in mobile occasion.
The inapplicable basically mobile occasion of prior art fire-resisting cable is used, and has better bending property cable, in the process of suing and labouring of catching fire and the fire-resisting cable that still can normally use after catching fire.
Above-mentioned deficiency still has is worth improved place.
The utility model content
The utility model purpose is to overcome above-mentioned the deficiencies in the prior art, provide a kind of can be used for mobile occasion, fire resistance superior, and can reusable fire-resisting cable.
Another purpose of utility model is to provide the fire-resisting cable of the satisfied back fire-fighting fire fighting of catching fire of a kind of energy.
The utility model purpose realizes; the main improvement is that to adopt mica tape to add a floor height fire-resistant; the basalt fibre wired tube of high insulation; form the insulated fireproof layer that mica adds basalt fibre wired tube structure; utilize the effect of holding tightly of high refractoriness of basalt fibre and wired tube; the fire-resistant mica that protection is inboard; still can keep the intact insulated fireproof layer of structure after feasible the catching fire; while is owing to the protective effect of holding tightly of wired tube; under normal circumstances can be used for mobile occasion; can't cause the destruction of mica layer, and preparation is simple, cost is low; overcome above-mentioned prior art deficiency, realize the utility model purpose.Specifically, the utility model fire-resisting cable comprises conductor and outsourcing mica insulation flame retardant coating, it is characterized in that mica layer has the basalt fibre wired tube outward.
In the utility model:
The mica layer gross thickness: similar to common fire-resisting cable, get final product more than 0.3mm from fire-resistant angle mica layer thickness, better for example 0.3-1.0mm can satisfy insulation and fire-resistant requirement, and dielectric voltage withstand is low, and mica layer is attenuate suitably.
The basalt fibre braid, main effect has three: one, plays and holds mica layer tightly, make mica layer under normal circumstances reach high-temp combustion (for example 950 ℃, 3h) after, can not come off; The 2nd, the auxiliary insulating effect that plays; The 3rd, this structure has high tensile strength, and can be used in mobile occasion.Test shows: wherein the wired tube count promptly has good protective effect more fortunately more than 60%, and wherein better count is more than 80%.The braiding basalt fibre, wherein filament diameter better adopts 0.1-0.3mm, crosses solid border and there is no need.
Conductor: can be for single, also can for many stranded, can also be the stranded soft junction structure conductor of thin monofilament.
The gained cable can be a single-core cable, and conductor+mica+basalt fibre braid, this structural cable are mainly used in single core poling cable; Also can be multicore cable, promptly form by aforementioned single-core cable is stranded; Can also be conductor+mica+basalt fibre braid+outer jacket, be used for frequent mobile occasion.
In addition, for vibration resistance and anti-spray behind the raising ignition of cable, can also outside single core or stranding multicore cable, increase the protection metal pipe that fusing point is higher than fire resistance test temperature (for example 950 ℃).Protection metal pipe, a kind of better is to adopt to roll annular line structure is arranged, embossing copper pipe for example can improve the bending property of cable, is more suitable for mobile occasion and uses.
The utility model fire-resisting cable, with respect to prior art, owing to adopt mica to add braiding basalt fibre layer basic insulation fireproof construction, make insulation and fire-resistant unification, mica and basalt fibre all can bear high temperature more than 950 ℃, and both are again the good insulation materials, thereby have superior insulation property and fire resistance simultaneously, also improved the long-term work serviceability temperature greatly, the real work serviceability temperature can reach more than 950 ℃.The outer directly jacket of mica braiding basalt fibre layer, fixedly mica layer effect is played in the braid effect of directly holding tightly, not only cable is through after frequently moving, the mica insulation fireproof construction is stable, still has superior insulated fireproof performance, and cable has guaranteed still that behind high-temp combustion insulation layer structure is intact, promptly keep moving, under the high temperature and burning back insulated fireproof performance is constant, keep primary characteristic, increase the refractory metal sleeve pipe more particularly outward, can stand vibratory impulse and fire fighting water drenches, satisfy the back fire-fighting of the catching fire requirement of suing and labouring, ignition process or catch fire after, still can use.With respect to fire prevention and the good magnesium oxide insulated fireproof cable of fire resistance, be soft junction structure cable, crooked easily, can be used for mobile occasion, and can realize length production.The utility model fire-resisting cable, the production efficiency height, manufacturing process is simple, need not to increase moulds of industrial equipment.All can keep good soft junction structure, insulated fireproof performance, and still can use before and after moving, burning behind high-temp combustion, be the main distinction and the advantage place that this fire-resisting cable is different from other fire-resisting cables.
Optimize specific embodiment below in conjunction with several; utility model essence is further understood in exemplary illustration and help; but the embodiment detail only is for utility model is described; do not represent utility model design whole technical schemes down; therefore should not be construed as the total technical scheme of utility model is limited; some are In the view of the technical staff; the unsubstantiality that does not depart from the utility model design increases and/or change; for example change or replace, all truely use novel protected scope so that technical characterictic with same or similar technique effect is simple.
Description of drawings
Fig. 1 is the first example structure schematic diagram.
Fig. 2 is the second example structure schematic diagram.
Fig. 3 is the 3rd example structure schematic diagram.
Fig. 4 is the 4th example structure schematic diagram.
Fig. 5 is the 5th example structure schematic diagram.
Embodiment
Embodiment 1: referring to Fig. 1, fire-resistant single-core cable is put up wrapped 2 layers at the thick mica tape of stranded flexible conductor 1 external application 0.14mm and is constituted main insulation flame retardant coating 2, and silk footpath 0.2mm basalt fibre wired tube 3 is arranged outward, count 80% weaves two layers (deciding on insulation property).
Embodiment 2: referring to Fig. 2, as described above, braid has PVC sheath 4 outward.
Embodiment 3: referring to Fig. 3, as embodiment 1, braid is vertical outward to be surrounded by copper pipe 5, and roll on the surface annular line.
Embodiment 5: referring to Fig. 5, adopt the stranded composition multicore cable of 1 three single-core lines of embodiment, twisted cable core has embossing copper pipe 5 and PVC sheath 4 outward successively, constitutes the multicore fire-resisting cable.
To those skilled in the art; under this patent design and specific embodiment enlightenment; some distortion that can directly derive or associate from this patent disclosure and general knowledge; those of ordinary skills will recognize also can adopt additive method; or the substituting of known technology commonly used in the prior art; and the mutual various combination between feature; for example inner wire adopts single conductor; expand the change of cover and outer protection metal tube, basalt fibre silk footpath; count; the change of the number of plies, or the like unsubstantiality change; can be employed equally; can both realize this patent representation function and effect, launch for example no longer one by one to describe in detail, all belong to this patent protection range.
Claims (9)
1. fire-resisting cable comprises conductor and outsourcing mica insulation flame retardant coating, it is characterized in that mica layer has the basalt fibre wired tube outward.
2. according to the described fire-resisting cable of claim 1, it is characterized in that mica layer thickness 0.3-1.0mm.
3. according to the described fire-resisting cable of claim 1, it is characterized in that basalt fibre wired tube filament diameter 0.1-0.3mm.
4. according to the described fire-resisting cable of claim 1, it is characterized in that basalt fibre wired tube count 〉=60%.
5. according to the described fire-resisting cable of claim 4, it is characterized in that basalt fibre wired tube count 〉=80%.
6. according to the described fire-resisting cable of arbitrary claim in the claim 1 to 5, it is characterized in that wired tube has heatproof outward greater than 950 ℃ protection metal pipe.
7. according to the described fire-resisting cable of claim 6, it is characterized in that protection metal pipe is to roll the embossing of annular line pipe is arranged.
8. according to the described fire-resisting cable of claim 7, it is characterized in that metal embossing pipe has outer jacket outward.
9. according to the described fire-resisting cable of arbitrary claim in the claim 1 to 5, it is characterized in that the basalt fibre wired tube has outer jacket outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020289092 CN201812533U (en) | 2010-08-11 | 2010-08-11 | Fire resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020289092 CN201812533U (en) | 2010-08-11 | 2010-08-11 | Fire resistant cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201812533U true CN201812533U (en) | 2011-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020289092 Expired - Fee Related CN201812533U (en) | 2010-08-11 | 2010-08-11 | Fire resistant cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201812533U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376386A (en) * | 2010-08-11 | 2012-03-14 | 徐静 | Fire-resisting cable |
| CN102779573A (en) * | 2011-05-13 | 2012-11-14 | 远东电缆有限公司 | Fireproof cable and production process thereof |
| CN103646712A (en) * | 2013-12-23 | 2014-03-19 | 河南金水电缆集团有限公司 | Flame-retardant composite fireproof cable |
| CN104637618A (en) * | 2013-11-14 | 2015-05-20 | 成都捷康特科技有限公司 | Waterproof moisture-proof fire-resistant cable |
| WO2015166438A1 (en) * | 2014-04-30 | 2015-11-05 | Reyngoud Benjamin Peter | Tubes for high temperature industrial application and methods for producing same |
-
2010
- 2010-08-11 CN CN 201020289092 patent/CN201812533U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376386A (en) * | 2010-08-11 | 2012-03-14 | 徐静 | Fire-resisting cable |
| CN102779573A (en) * | 2011-05-13 | 2012-11-14 | 远东电缆有限公司 | Fireproof cable and production process thereof |
| CN104637618A (en) * | 2013-11-14 | 2015-05-20 | 成都捷康特科技有限公司 | Waterproof moisture-proof fire-resistant cable |
| CN103646712A (en) * | 2013-12-23 | 2014-03-19 | 河南金水电缆集团有限公司 | Flame-retardant composite fireproof cable |
| CN103646712B (en) * | 2013-12-23 | 2016-01-06 | 河南金水电缆集团有限公司 | A kind of flame-retardant composite fireproof cable |
| WO2015166438A1 (en) * | 2014-04-30 | 2015-11-05 | Reyngoud Benjamin Peter | Tubes for high temperature industrial application and methods for producing same |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20170811 |