CN102881373A - Fire-resisting cable - Google Patents
Fire-resisting cable Download PDFInfo
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- CN102881373A CN102881373A CN2012103949353A CN201210394935A CN102881373A CN 102881373 A CN102881373 A CN 102881373A CN 2012103949353 A CN2012103949353 A CN 2012103949353A CN 201210394935 A CN201210394935 A CN 201210394935A CN 102881373 A CN102881373 A CN 102881373A
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- thermal insulation
- resisting
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Abstract
The invention discloses a fire-resisting cable, which comprises a cable core formed by standing a plurality of wire cores, wherein the wire core consists of a middle conductor and a fire resisting layer and an insulating layer arranged outside the conductor; a packing layer is arranged at clearance of the cable cores and outside the cable cores; and an inner protective layer, a thermal insulation layer, an armor layer and an outer protective layer are successively arranged outside the packing layer. According to the invention, the packing layer is formed by lapping rope-like inorganic material, and the thermal insulation layer is formed by sandwiching synthetic mica between two layers of highly flame retardant glass fabric strips; and such a double insurance structure can produce very good fire resisting and heat insulating effect in fires, so that the insulating layer of the cable is softened but not melted in the fires. Then the armor layer is adopted, and apart from bearing external force, the armor layer also has the functions of stabilizing a fireproof structure in the cable and isolating fire; and even if the cable is impacted in working and mounting, materials of the packing layer and the thermal insulation layer do not loosen, thus ensuring the reliability of the cable.
Description
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Technical field
The present invention relates to a kind of power cable, specifically a kind of fire-resisting cable.
Background technology
Fire-resisting cable refers to can keep the cable of certain hour safe operation in the flame combustion situation.China's standard GB/T 12666.6 divides A, B two kinds of ranks fire resistance test, and 950 ~ 1000 ℃ of A level flame temperatures continue for fire time 90min, 750 ~ 800 ℃ of B level flame temperatures, continue for fire times 90 min, whole duration of test, sample should bear the load voltage value of product regulation.
Fire-resisting cable is widely used in skyscraper, underground railway, undergrond street, large-scale power station and the important places relevant with fire safety and fire-extinguishing and lifesaving such as industrial and mining enterprises.The wrapped mica in existing fire-resisting cable employing conductor outside brings and reaches fire-resistant effect, but cable install and work in often follow various collisions of rocking with junk, may make the mica tape flame retardant coating become lax, even dissipate, cause cable to lose original fire-resistant function.
Summary of the invention
Technical problem to be solved by this invention provides the good cable of a kind of fire resistance.
A kind of fire-resisting cable of the present invention, it comprises the cable core that is twisted into by some cores, described core is comprised of the conductor of centre and flame retardant coating and the insulating barrier that is arranged on outside the conductor, slit and outside at cable core are provided with packed layer, outside packed layer, set gradually sheath, thermal insulation layer, armour and outer jacket.
As improvement, described packed layer forms by the rope form inorganic material is wrapped, and this inorganic material possibility is glass fibre; Packed layer thickness is 1.5-2.5mm.
Further, described inorganic thermal insulation layer becomes mica paper to consist of by sticking clamping in the middle of the two-layer high flame retardant glass strap.
Packed layer among the present invention is made by the rope form inorganic material is wrapped, and thermal insulation layer becomes mica paper to consist of by sticking clamping in the middle of the two-layer high flame retardant glass strap, this double insurance structure can play good refractory heat-insulating effect in fire, so that the insulating barrier of cable is softened in fire and does not melt.Adopt afterwards armour, except bearing External Force Acting, also play fire resistive construction in the firm cable and the effect of fire insulation, even impacted in work with in installing, also can not cause loose the holding of material of packed layer and thermal insulation layer, guaranteed the reliability of cable.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, a kind of fire-resisting cable of the present invention, it mainly comprises the cable core that is twisted into by some cores, wherein core is comprised of the conductor 1 of centre and flame retardant coating 2 and the insulating barrier 3 that is arranged on outside the conductor, slit and outside at cable core are provided with packed layer 4, outside packed layer 4, set gradually sheath 5, thermal insulation layer 6, armour 7 and outer jacket 8.Packed layer 4 forms by the rope form inorganic material is wrapped, and thermal insulation layer 6 becomes mica paper to consist of by sticking clamping in the middle of the two-layer high flame retardant glass strap.
Claims (4)
1. fire-resisting cable, it is characterized in that: comprise the cable core that is twisted into by some cores, described core is comprised of the conductor (1) of centre and flame retardant coating (2) and the insulating barrier (3) that is arranged on outside the conductor, slit and outside at cable core are provided with packed layer (4), set gradually sheath (5), thermal insulation layer (6), armour (7) and outer jacket (8) outside packed layer (4).
2. fire-resisting cable according to claim 1, it is characterized in that: described packed layer (4) forms by the rope form inorganic material is wrapped.
3. fire-resisting cable according to claim 2, it is characterized in that: described packed layer (4) thickness is 1.5-2.5mm.
4. fire-resisting cable according to claim 1 and 2 is characterized in that: described thermal insulation layer (6) becomes mica paper to consist of by sticking clamping in the middle of the two-layer high flame retardant glass strap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103949353A CN102881373A (en) | 2012-10-18 | 2012-10-18 | Fire-resisting cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103949353A CN102881373A (en) | 2012-10-18 | 2012-10-18 | Fire-resisting cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102881373A true CN102881373A (en) | 2013-01-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103949353A Pending CN102881373A (en) | 2012-10-18 | 2012-10-18 | Fire-resisting cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102881373A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106328298A (en) * | 2016-08-29 | 2017-01-11 | 苏州意华电工有限公司 | High and low temperature resistant communication cable |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200979814Y (en) * | 2006-11-30 | 2007-11-21 | 无锡市沪安电线电缆有限公司 | A middle-high voltage fire resistant cable |
| CN102394121A (en) * | 2011-10-25 | 2012-03-28 | 四川鑫电电缆有限公司 | Medium-voltage fire-resistant cable |
| CN102568689A (en) * | 2012-03-06 | 2012-07-11 | 无锡市富华电缆有限公司 | Fireproof armored cable |
| CN102568691A (en) * | 2012-03-28 | 2012-07-11 | 江苏长峰电缆有限公司 | Environment-friendly mid-voltage fire resistant cable |
| CN102682906A (en) * | 2012-05-03 | 2012-09-19 | 宝胜科技创新股份有限公司 | Aluminum-core low-voltage fireproof power cable and manufacture method thereof |
-
2012
- 2012-10-18 CN CN2012103949353A patent/CN102881373A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200979814Y (en) * | 2006-11-30 | 2007-11-21 | 无锡市沪安电线电缆有限公司 | A middle-high voltage fire resistant cable |
| CN102394121A (en) * | 2011-10-25 | 2012-03-28 | 四川鑫电电缆有限公司 | Medium-voltage fire-resistant cable |
| CN102568689A (en) * | 2012-03-06 | 2012-07-11 | 无锡市富华电缆有限公司 | Fireproof armored cable |
| CN102568691A (en) * | 2012-03-28 | 2012-07-11 | 江苏长峰电缆有限公司 | Environment-friendly mid-voltage fire resistant cable |
| CN102682906A (en) * | 2012-05-03 | 2012-09-19 | 宝胜科技创新股份有限公司 | Aluminum-core low-voltage fireproof power cable and manufacture method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106328298A (en) * | 2016-08-29 | 2017-01-11 | 苏州意华电工有限公司 | High and low temperature resistant communication cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130116 |