CN102651252B - Flexible mineral insulated fireproof cable - Google Patents
Flexible mineral insulated fireproof cable Download PDFInfo
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- CN102651252B CN102651252B CN201210154745.4A CN201210154745A CN102651252B CN 102651252 B CN102651252 B CN 102651252B CN 201210154745 A CN201210154745 A CN 201210154745A CN 102651252 B CN102651252 B CN 102651252B
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Abstract
The invention discloses a flexible mineral insulated fireproof cable. The flexible mineral insulated fireproof cable comprises a plurality of bundles of conductive wire cores and an outer sheath wrapped outside the plurality of the bundles of the conductive wire cores, and each bundle of the conductive wire core comprises a conductor and an insulating layer wrapped outside the conductor. Each conductor is twisted by a plurality of strands of aluminum alloy wires; each insulating layer comprises a mica tape wound outside the conductor and a color separation sleeve which is wrapped outside the mica tape and manufactured by modified polyolefine; and a fire barrier is arranged between the plurality of the bundles of the conductive wire cores and the outer sheath, and the fire barrier is formed by mineral powder filled in gaps among the plurality of the bundles of the conductive wire cores and between the inner walls of the outer sheath. The flexible mineral insulated fireproof cable disclosed by the invention can solve the problems of rare copper resources and extremely high cost; and the fire barrier is further increased outside the conductive wire cores adopting the aluminum alloy twisted wires as the conductors, so that the conductive wire cores made of the aluminum alloy conductors with low melting point can work safely in a porcelain pipe.
Description
Technical field
The invention belongs to low-voltage cable field, relate to a kind of flexible mineral insulated cable.
Background technology
Cable is mainly used in the conduction of electric power, and it is of a great variety, applies increasingly extensive.The insulating material of cable is normally used is all high-molecular organic material, and under flame condition, organic material can rapid carbonization, thereby causes the destruction of insulation level until lose insulating effect.Develop thus a kind of cable of mineral material as insulation of using.This cable has dividing of rigidity and tenderness, and the purposes of flexible cable is greater than rigid cable.The conductor material of flexible cable is generally copper or aluminium at present, but the scarcity of resources of copper, price is higher, and the mechanical performance of aluminium is not good, makes troubles to installation, and both all have obvious weakness.For this reason, the applicant invented a kind of with aluminium alloy stranded conductor as the flexible mineral cable replacement of conductor copper stranded conductor or aluminium stranded conductor, it is lower as various performances and the cost of the flexible mineral cable of conductor with copper stranded conductor that this cable can reach.But according to the fire-protection standard of national civil buildings and skyscraper and standard, flexible mineral cable must bear the burning of 950 ℃, 3 hours under load 1000V condition of work, there is the function of anti-spray, anti-mechanical impact simultaneously, and the fusing point of aluminium alloy (660 ℃) is lower than the fusing point of copper (1083 ℃), therefore how still can keep high fire-resistant performance to become a large difficult point of development aluminium alloy flexible mineral cable adopting in aluminium alloy does conductor cheaply.
Summary of the invention
The object of the invention is to overcome the defect of prior art, a kind of flexible mineral insulated cable is provided, it not only has, and cost is lower, market is widely used, all good features of performance, can also under Fire Conditions, make low-melting aluminium alloy conductor work safely.
The technical scheme that realizes above-mentioned purpose is: a kind of flexible mineral insulated cable, and comprise some bundle conductor wire cores and be wrapped in the oversheath of some bundle conductor wire cores outside, every bundle conductor wire core comprises conductor and is wrapped in the insulating barrier of conductor outside, wherein,
Described conductor forms by multiply aluminium alloy wire is stranded;
Described insulating barrier is made up of the color separation cover of being made by improved polyalkene that is wrapped in the mica tape of described conductor outside and be wrapped in outside mica tape;
Between some Shu Suoshu conductor wire cores and described oversheath, be provided with fire compartment wall, this fire compartment wall be filled in the gap of some Shu Suoshu conductor wire cores and and the inwall of oversheath between mineral powder, the compound potter's clay of easy-sintering.
Above-mentioned aluminium alloy flexible mineral insulated cable, wherein, the compound potter's clay that described mineral powder is easy-sintering.
Above-mentioned aluminium alloy flexible mineral insulated cable, wherein, described fire compartment wall is also surrounded with glass strap outward.
Above-mentioned aluminium alloy flexible mineral insulated cable, wherein, the material of described oversheath is the chemical combination polymer that contains mineral material of low smoke and zero halogen grade.
The technical scheme of flexible mineral insulated cable of the present invention, adopt the conductor of aluminium alloy wire as cable, copper cash or the aluminum steel of prior art are substituted, solve copper material scarcity of resources, the problem that cost is too high, also increase fire compartment wall at aluminium alloy twisted wire one as the outside of the conductor wire core of conductor, this fire compartment wall adopts the compound potter's clay of easy-sintering, the fire compartment wall that this material is made keeps soft powder ball shape at normal temperatures, guarantee in use flexible of finished cable, and in the time running into fire, can form have heat insulation, fireproof porcelain tube, the conductor wire core of being made up of low-melting aluminium alloy conductor can be worked safely in porcelain tube, thereby make cable under load 1000V condition of work, bear 950 ℃, the burning of 3 hours, there is anti-spray simultaneously, the function of anti-mechanical impact.
Accompanying drawing explanation
Fig. 1 is the sectional view of flexible mineral insulated cable of the present invention.
Embodiment
In order to make those skilled in the art can understand better technical scheme of the present invention, below in conjunction with accompanying drawing, its embodiment is elaborated:
Flexible mineral insulated cable of the present invention comprises some bundle conductor wire cores 10, fire compartment wall 4, glass strap 5 and oversheath 6, wherein,
Every bundle conductor thread core 10 comprises conductor 1 and is wrapped in the insulating barrier of conductor 1 outside, and conductor 1 forms by multiply aluminium alloy wire is stranded; Insulating barrier is made up of the color separation cover 3 that is wrapped in the mica tape 2 of conductor 1 outside and be wrapped in outside mica tape 2, color separation cover 3 is made by improved polyalkene, not only play double insulation effect, mica tape 2 plays again heat-blocking action, color separation cover 3 also adopts β electron ray through crosslinking Treatment, its molecular structure stabilized, can improve the stability of insulation and the ability of voltage that withstands shocks, and reaches the effect of environmental protection;
Oversheath 6 is wrapped in the outside of all conductor wire cores 10, and this oversheath 6 is made up of the material of the chemical combination polymer that contains mineral material of low smoke and zero halogen grade, can reach equally flexible object;
Between some bundle conductor wire cores 10 of flexible mineral insulated cable of the present invention and conductor wire core 10, adopt traditional cabling structure, all material all meets flexible feature.
Flexible mineral insulated cable of the present invention, due to the conductor that adopts aluminium alloy wire as cable, copper cash or the aluminum steel of prior art are substituted, not only cost is lower, and increase fire compartment wall at aluminium alloy twisted wire one as the outside of the conductor wire core of conductor, the burning that cable can be born 950 ℃, 3 hours under the condition of work of load 1000V has the function of anti-spray, anti-mechanical impact simultaneously.
The burning that the fire compartment wall of aluminium alloy flexible mineral insulated cable of the present invention can make fireproof cable bear under load 1000V condition of work 950 ℃, 3 hours has the function of anti-spray, anti-mechanical impact simultaneously.
Above flexible mineral insulated cable provided by the present invention is carried out introducing explanation, having applied specific case herein sets forth embodiments of the present invention, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, this description should not be construed as limitation of the invention, as long as within the scope of connotation of the present invention, to the variation of the above embodiment, modification all will drop within the scope of claims of the present invention.
Claims (3)
1. a flexible mineral insulated cable, comprises some bundle conductor wire cores and is wrapped in the oversheath of some bundle conductor wire cores outside, every bundle conductor wire core comprises conductor and is wrapped in the insulating barrier of conductor outside, it is characterized in that,
Described conductor forms by multiply aluminium alloy wire is stranded;
Described insulating barrier is made up of the color separation cover of being made by improved polyalkene that is wrapped in the mica tape of described conductor outside and be wrapped in outside mica tape, and described color separation cover is to adopt β electron ray process crosslinking Treatment;
Between some Shu Suoshu conductor wire cores and described oversheath, be provided with fire compartment wall, this fire compartment wall be filled in the gap of some Shu Suoshu conductor wire cores and and the inwall of described oversheath between mineral powder,
Described mineral powder is the compound potter's clay of easy-sintering, and the compound potter's clay of this easy-sintering keeps soft loose powder shape at normal temperatures, makes finished cable flexible in use, has heat insulation, fireproof porcelain tube and can form in the time running into fire.
2. flexible mineral insulated cable according to claim 1, is characterized in that, described fire compartment wall is also surrounded with glass strap outward.
3. flexible mineral insulated cable according to claim 1, is characterized in that, the material of described oversheath is the chemical combination polymer that contains mineral material of low smoke and zero halogen grade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210154745.4A CN102651252B (en) | 2012-05-16 | 2012-05-16 | Flexible mineral insulated fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210154745.4A CN102651252B (en) | 2012-05-16 | 2012-05-16 | Flexible mineral insulated fireproof cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102651252A CN102651252A (en) | 2012-08-29 |
| CN102651252B true CN102651252B (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210154745.4A Expired - Fee Related CN102651252B (en) | 2012-05-16 | 2012-05-16 | Flexible mineral insulated fireproof cable |
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| CN (1) | CN102651252B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102831965A (en) * | 2012-08-10 | 2012-12-19 | 安徽埃克森科技集团有限公司 | Fireproof mineral insulated cable |
| CN103854743A (en) * | 2012-11-28 | 2014-06-11 | 上海起帆电线电缆有限公司 | Fire-resisting low-smoke non-halogen cable |
| CN103886997A (en) * | 2014-03-14 | 2014-06-25 | 无锡市曙光电缆有限公司 | Medium-soft clay fire resistant cable |
| CN104392799A (en) * | 2014-12-09 | 2015-03-04 | 上海快鹿电气技术开发有限公司 | Flexible mineral fire-proof photoelectric composite cable |
| CN108389653A (en) * | 2018-05-04 | 2018-08-10 | 无锡市曙光电缆有限公司 | A kind of aluminium core polyvinyl chloride insulation flame-proof power cable |
| CN109524157B (en) * | 2018-11-14 | 2019-12-17 | 四川省川胜电缆有限公司 | Soft mineral fireproof cable |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1490823A (en) * | 2002-10-16 | 2004-04-21 | 江苏上上电缆集团有限公司 | Isolated copper wire cable with copper armoured under 3KV voltage rating and manufacture thereof |
| CN201877143U (en) * | 2010-06-03 | 2011-06-22 | 安徽欣意电缆有限公司 | Fire-resistant cable |
| CN102403063A (en) * | 2011-11-28 | 2012-04-04 | 江苏华鹏电缆股份有限公司 | Fireproof cable |
| CN202601246U (en) * | 2012-05-16 | 2012-12-12 | 上海快鹿电气技术开发有限公司 | Flexible mineral insulated fireproof cable |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101423744B (en) * | 2008-06-23 | 2011-11-09 | 卜伟荣 | Preparation method of organic fire prevention calking composition |
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2012
- 2012-05-16 CN CN201210154745.4A patent/CN102651252B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1490823A (en) * | 2002-10-16 | 2004-04-21 | 江苏上上电缆集团有限公司 | Isolated copper wire cable with copper armoured under 3KV voltage rating and manufacture thereof |
| CN201877143U (en) * | 2010-06-03 | 2011-06-22 | 安徽欣意电缆有限公司 | Fire-resistant cable |
| CN102403063A (en) * | 2011-11-28 | 2012-04-04 | 江苏华鹏电缆股份有限公司 | Fireproof cable |
| CN202601246U (en) * | 2012-05-16 | 2012-12-12 | 上海快鹿电气技术开发有限公司 | Flexible mineral insulated fireproof cable |
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| CN102651252A (en) | 2012-08-29 |
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