CN202093875U - Flexible fireproof cable - Google Patents
Flexible fireproof cable Download PDFInfo
- Publication number
- CN202093875U CN202093875U CN2011202124462U CN201120212446U CN202093875U CN 202093875 U CN202093875 U CN 202093875U CN 2011202124462 U CN2011202124462 U CN 2011202124462U CN 201120212446 U CN201120212446 U CN 201120212446U CN 202093875 U CN202093875 U CN 202093875U
- Authority
- CN
- China
- Prior art keywords
- cable
- core conductor
- cable core
- fire
- oversheath
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Insulated Conductors (AREA)
Abstract
A flexible fireproof cable comprises a cable core conductor. An insolating layer, an insulating layer and an oversheath are successively arranged at a periphery of the cable core conductor; the insolating layer is formed by wrapping of synthesis mica tapes; the insulating layer and the oversheath are respectively made of ceramic fireproof silicone rubber materials; and the cable core conductor is prepared by bunches made of tin-coated copper filaments in a regular intertwist of left side manner. The flexible fireproof cable has a simple structure, superior fire resistance performance, little smoke and high flexible; and is non-toxic.
Description
Technical field
The utility model relates to cable, especially relates to a kind of flexible fire-proof cable that belongs in the rated voltage 0.6/1kV electric power system.
Background technology
Existing common power cable does not possess fire-proof function at present, can't be applied in the use occasion that ask for something is high temperature resistant, fire-resistant, flexibility is good, as high-rise, national heavy construction, subway, city network etc., and the technological process of production of traditional mineral insulated cable is extremely complicated, and cost is also very high.
Application number is that the patent documentation of CN200920079117.8 discloses a kind of mineral insulation flexible fire-proof cable, this cable only in the conductor outer setting high temperature resistant mineral insulation layer, and which kind of mineral insulation layer do not spell out be; Application number is that the patent documentation of CN200820160730.8 discloses a kind of metallic sheath flexible fire-proof cable, comprise the copper sheath that is provided with vestibule, be arranged at least one composite cable in the described vestibule, though the copper sheath of this cable can be prevented fires, but thermal conductivity is very high, conductor temperature is raise rapidly, destroy the conductivity of conductor; Application number is that the patent documentation of CN200520073944.8 discloses a kind of inorganic insulation flexible fire-proof cable, this cable in the conductor outer setting the wrapped refractory insulating layer of the female band of 6 stratus, be provided with the copper alloy tube of indulging bag, butt welding and the metallic sheath that on copper alloy tube, is provided with non-helical embossing on the refractory insulating layer, this cable complex manufacturing, cost is higher, and adopts the wrapped flexibility that can limit cable of metal tube.
The utility model content
At above-mentioned technical problem, the utility model provides a kind of flexible fire-proof cable that belongs in the rated voltage 0.6/1kV electric power system, and the utility model is simple in structure, and fire resistance is superior, LSZH, and have the height flexibility.
The technical solution of the utility model is as follows:
The utility model comprises the cable core conductor, peripheral order at the cable core conductor is provided with separator, insulating barrier and oversheath, described separator constitutes by synthetic mica tape is wrapped, and the wrapped Duplication of mica tape is more than or equal to 20%, and described insulating barrier and oversheath are respectively potteryization fire-resistant silicon rubber material; Described cable core conductor adopts bunch that the tin-coated copper monofilament constitutes according to the regular stranded formation of left-hand, and the stranded pitch diameter ratio of described each layer of cable core conductor is deferred to successively 9 by skin to internal layer respectively and added 2 rule.
The utility model beneficial technical effects is:
1, separator is a synthetic mica tape, and this material coefficient of expansion is little, and dielectric strength is big, the resistivity height, and dielectric constant is even, thermal endurance class height particularly, heatproof can reach the fire-resistant level of A level greater than 1000 ℃.
2, insulating barrier and oversheath are potteryization fire-resistant silicon rubber vulcanized elastomer, and the specific insulation of potteryization fire-resistant silicon rubber reaches 2 * 10
16Ω cm; oxygen index is 42; both had extraordinary electrical insulation capability; possess excellent fire-resistant, fire-retardant, low cigarette, Halogen, performance such as nontoxic again, the residue after its burning is the ceramic-like duricrust simultaneously, duricrust not fusion under 600 ~ 1300 ℃ of high temperature; do not drip; guaranteed that circuit is unimpeded under the situation of fire, played firm protective effect, try to gain time precious to one for personnel escape or system's control.The potteryization fire-resistant silicon rubber is after sulfuration, and mechanical strength promotes greatly.Adopt this design can save highly difficult technological processes such as the can of conventional mineral insulated cable, copper sheath, drawing.
3, the cable core conductor adopts the bunch of tin-coated copper monofilament formation according to the regular stranded formation of left-hand, the bunch of tinned copper wire or its formation is soft, adopt left-hand bundle strand mode, it is flexible preferably that cable core conductor of the present utility model is had, this is because all to a direction twisting, when bending, the slip surplus is bigger between each single line, so the good bending property of bunch.The stranded lay ratio of each layer of the utility model cable core conductor deferred to successively 9 by skin to internal layer and added 2 rules, has moderate pitch diameter ratio, and bunch twists easy shaping again and makes the utility model that good flexibility be arranged, and left-hand bundle strand makes the copper bunch be not easy to scatter simultaneously.Otherwise lay ratio is too small, and bunch is not easy to be shaped; Lay ratio is excessive, and then combination cable is flexible can reduce.
Description of drawings
Fig. 1 is the utility model schematic diagram.
Among the figure: 1, cable core conductor; 2, separator; 3, insulating barrier; 4, oversheath.
Specific implementation method
The utility model comprises cable core conductor 1, peripheral order at cable core conductor 1 is provided with separator 2, insulating barrier 3 and oversheath 4, described separator 2 constitutes by synthetic mica tape is wrapped, the wrapped Duplication of mica tape is more than or equal to 20%, and described insulating barrier 3 and oversheath 4 extrude with potteryization fire-resistant silicon rubber material respectively; The sulfuration process of described silicon rubber adopts common process to make.Above-mentioned each material all adopts marketable material.
Cable core conductor 1 adopts the bunch of tin-coated copper monofilament formation according to the regular stranded formation of left-hand,
Its arrangement architecture is: innermost layer is 1 bunch, evenly distributed 6 bunch of inferior internal layer or tinned copper wire, and every layer increases by 6 bunch when outside again, and stranded mode is regular arrangement concentric stranding, and stranded lay ratio is followed successively by 9,11,13,15 from outside to inside ...The number of plies (or sectional area of cable core conductor 1) that cable core conductor 1 is stranded and the line of tinned copper wire or bunch footpath by the current capacity of cable according to the conventional design value.The multiple strand equipment of the pack equipment of bunch and cable is conventional equipment.
Claims (3)
1. flexible fire-proof cable, comprise the cable core conductor, it is characterized in that: the peripheral order at the cable core conductor is provided with separator, insulating barrier and oversheath, and described separator constitutes by synthetic mica tape is wrapped, and described insulating barrier and oversheath are respectively potteryization fire-resistant silicon rubber material; Described cable core conductor adopts the bunch of tin-coated copper monofilament formation according to the regular stranded formation of left-hand.
2. according to the described flexible fire-proof cable of claim 1, it is characterized in that the stranded pitch diameter ratio of described each layer of cable core conductor defers to 9 by skin successively to internal layer respectively and add 2 rule.
3. according to the described flexible fire-proof cable of claim 1, it is characterized in that in the wrapped structure of described separator, the wrapped Duplication of mica tape is more than or equal to 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202124462U CN202093875U (en) | 2011-06-22 | 2011-06-22 | Flexible fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202124462U CN202093875U (en) | 2011-06-22 | 2011-06-22 | Flexible fireproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202093875U true CN202093875U (en) | 2011-12-28 |
Family
ID=45368928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202124462U Expired - Fee Related CN202093875U (en) | 2011-06-22 | 2011-06-22 | Flexible fireproof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202093875U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800384A (en) * | 2012-07-20 | 2012-11-28 | 上海市高桥电缆厂有限公司 | High-temperature-resistant mineral-insulated flexible cable and manufacturing method thereof |
-
2011
- 2011-06-22 CN CN2011202124462U patent/CN202093875U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800384A (en) * | 2012-07-20 | 2012-11-28 | 上海市高桥电缆厂有限公司 | High-temperature-resistant mineral-insulated flexible cable and manufacturing method thereof |
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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: 20111228 Termination date: 20160622 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |