CN202796160U - Novel non-sheathed multi-core fireproof electric cable - Google Patents
Novel non-sheathed multi-core fireproof electric cable Download PDFInfo
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- CN202796160U CN202796160U CN 201220356862 CN201220356862U CN202796160U CN 202796160 U CN202796160 U CN 202796160U CN 201220356862 CN201220356862 CN 201220356862 CN 201220356862 U CN201220356862 U CN 201220356862U CN 202796160 U CN202796160 U CN 202796160U
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Abstract
The utility model relates to an electric cable, in particular, relates to a novel non-sheathed multi-core fireproof electric cable. The novel non-sheathed multi-core fireproof electric cable includes a plurality of copper conductors. Insulating layers are arranged at the exteriors of all the plurality of copper conductors. A filler is filled in the gaps among the plurality of copper conductors. The novel non-sheathed multi-core fireproof electric cable is characterized in that: the insulating layers are fireproof mica tapes which wraps on the copper conductors; fire-resistant heat-isolating layers are sleeved on the exteriors of the insulating layers; a fireproof layer is arranged outside the fire-resistant heat-isolating layers; and a cabling wrapping-tape heat-isolating layer is arranged between the fireproof layer and the fire-resistant heat-isolating layers. The novel non-sheathed multi-core fireproof electric cable of the utility model is advantageous in excellent fireproof performance, convenient installation, favorable bending performance, simple processing technology, great fireproof effect, cost-saving property and the like.
Description
Technical field
The utility model relates to a kind of cable, especially relates to a kind of without sheath Novel multi-core fireproof cable.
Background technology
As everyone knows, what present domestic high request fireproof cable adopted is the level and smooth copper sheath structural cable of magnesium oxide mineral insulation, it is the interpolation magnesium oxide technique by drawing then in the copper sheath that this cable adds what adopt man-hour, therefore the cable joint length is generally all shorter, only have 100 meters, and the bending property of cable is poor, and laying installation is very difficult.The easy moisture absorption of magnesium oxide, joint length is limited, is not suitable for mobile, vibration place.Simultaneously this structural cable project investment is very huge, and the cost recovery cycle is long, and the cable commercial value is high.In a word, adopt magnesium oxide as the mineral insulated cable of insulating material following weak point to be arranged: 1. cable processing percent defective is high, and production cost is high; 2. the easy moisture absorption of magnesium oxide, joint length is limited, is not suitable for mobile, vibration place; 3. bending property is poor, and laying installation is very difficult.
Summary of the invention
The utility model mainly is for the existing above-mentioned technical problem of prior art, a kind of easy moisture absorption of magnesium oxide in single core mineral insulated cable that efficiently solves is provided, the problems such as joint length is limited, can the identical fire-proof function of bonding core mineral insulated cable, can do again long and laying installation makes things convenient for, good bending property without sheath Novel multi-core fireproof cable.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of without sheath Novel multi-core fireproof cable, comprise many copper conductors, many copper conductors are equipped with insulating barrier outward, be provided with filler in the space between many copper conductors, it is characterized in that described insulating barrier is wrapped fire-resistant isinglass belt on copper conductor, insulating barrier is arranged with refractory insulating layer outward, described refractory insulating layer is provided with fireprotection layer outward, is arranged with stranding band thermal insulation layer between described fireprotection layer and the refractory insulating layer.The utility model efficiently solves the easy moisture absorption of magnesium oxide in single core mineral insulated cable, the problems such as joint length is limited, can the identical fire-proof function of bonding core mineral insulated cable, it is convenient to do again length and laying installation, good bending property, be fit to mobile, the vibration place, investment is low again saves cost than mineral insulated cable, processing technology is simple, and by test, cable is under 950 ℃～1000 ℃ flame temperatures, burning 180min(is than long one times of common fire-resisting cable time), have very good fire-resistant and anti-flaming function, the rated voltage of energising cable during burning, neither one fuse or circuit breaker disconnect; Conductor is continuous, and namely bulb does not extinguish.
As preferably, described refractory insulating layer is for adopting ceramic fireproof＝fire-proof composite band to make the composite fire thermal insulation layer.As refractory insulating layer, effectively improved the heat insulation and flameproof effect of cable with ceramic fireproof＝fire-proof composite band.
As preferably, described filler is the high-flame-resistance environment-friendly gasket for packing.The high-flame-resistance environment-friendly gasket for packing is adopted in the space, reduces air and improves the fire-retardant fireproof performance, has guaranteed the fire-proof and thermal-insulation effect of its multicore cable.
As preferably, described stranding band thermal insulation layer is ceramic fireproof＝fire-proof composite band.Adopt ceramic fireproof＝fire-proof composite band as the outer stranding band thermal insulation layer of cable core, the fire-proof and thermal-insulation effect is splendid.
As preferably, described fireprotection layer is the embossing copper sheath.Adopt the embossing copper sheath, not only prevent fires but also can Effective Raise cable bend performance.
Therefore, the utlity model has the characteristics such as fire protecting performance is good, easy for installation, good bending property, processing technology is simple, fire resistant flame retardant is effective, saving cost.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1:
Shown in Figure of description 1, a kind of without sheath Novel multi-core fireproof cable, comprise many copper conductors 1, many copper conductors are equipped with insulating barrier 2 outward, be provided with filler 4 in the space between many copper conductors, insulating barrier 2 is wrapped fire-resistant isinglass belt on copper conductor, and insulating barrier is arranged with refractory insulating layer 3 outward, be provided with fireprotection layer 6 outside the refractory insulating layer 3, be arranged with stranding band thermal insulation layer 5 between fireprotection layer 6 and the refractory insulating layer 3.Refractory insulating layer 3 is for adopting ceramic fireproof＝fire-proof composite band to make the composite fire thermal insulation layer.Filler 4 is the high-flame-resistance environment-friendly gasket for packing.Stranding band thermal insulation layer 5 is ceramic fireproof＝fire-proof composite band.Fireprotection layer 6 is the embossing copper sheath.
Twine fire-resistant isinglass belt as the insulating barrier of cable at copper conductor, and with ceramic fireproof＝fire-proof composite band as the composite fire thermal insulation layer, improve the heat insulation and flameproof effect of cable, adopt the embossing copper sheath, raising fireproofing of cable and bending property.Multi-core cable forming, space adopt high-flame-resistance environment-friendly gasket for packing (reduce air and improve the fire-retardant fireproof performance), and again adopt ceramic fireproof＝fire-proof composite band as the outer stranding band thermal insulation layer of cable core, have guaranteed the fire-proof and thermal-insulation effect of its multicore cable.The power frequency dielectric strength of fire-resistant isinglass belt is 10MV/m under the normal temperature, specific insulation 〉=1.0 * 1010 Ω m; Ceramic fireproof＝fire-proof composite band power frequency dielectric strength is 36MV/mm, specific insulation 〉=1.0 * 1012 Ω m, but the highest heatproof reaches 3000 ℃; So the fusing point of copper be 1083 ℃ when its temperature is no more than 1000 ℃, most places be can because of the fusing or the burning not disintegrate, more can not propagate kindling material.The utility model performance is consistent with the normal cable property retention.Surpassing under 1000 ℃ of environment at flame, even after the fusing of outside copper sheath, the ceramic fireproof＝fire-proof composite band of the inside can expand rapidly, forms fine and close porous carbon layer, plays good refractory heat-insulating effect; The mica tape of guaranteeing the inside can be not damaged when vibration yet, guaranteed its insulating properties.Adopt said structure, when cable under flame environment, can be rapidly heat insulation, oxygen barrier, slow down the conduction of heat, effectively protected the core normal power supply.
Should be understood that this embodiment only is used for explanation the utility model and is not used in the scope of the present utility model that limits.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (5)
1. one kind without sheath Novel multi-core fireproof cable, comprise many copper conductors (1), many copper conductors are equipped with insulating barrier (2) outward, be provided with filler (4) in the space between many copper conductors, it is characterized in that described insulating barrier (2) is wrapped fire-resistant isinglass belt on copper conductor, insulating barrier is arranged with refractory insulating layer (3) outward, described refractory insulating layer (3) is outer to be provided with fireprotection layer (6), is arranged with stranding band thermal insulation layer (5) between described fireprotection layer (6) and the refractory insulating layer (3).
2. according to claim 1 without sheath Novel multi-core fireproof cable, it is characterized in that described refractory insulating layer (3) is for adopting ceramic fireproof＝fire-proof composite band to make the composite fire thermal insulation layer.
3. according to claim 1 without sheath Novel multi-core fireproof cable, it is characterized in that described filler (4) is the high-flame-resistance environment-friendly gasket for packing.
4. according to claim 1 and 2 or 3 described without sheath Novel multi-core fireproof cable, it is characterized in that described stranding band thermal insulation layer (5) is ceramic fireproof＝fire-proof composite band.
5. according to claim 1 and 2 or 3 described without sheath Novel multi-core fireproof cable, it is characterized in that described fireprotection layer (6) is the embossing copper sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220356862 CN202796160U (en) | 2012-07-23 | 2012-07-23 | Novel non-sheathed multi-core fireproof electric cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220356862 CN202796160U (en) | 2012-07-23 | 2012-07-23 | Novel non-sheathed multi-core fireproof electric cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202796160U true CN202796160U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220356862 Expired - Fee Related CN202796160U (en) | 2012-07-23 | 2012-07-23 | Novel non-sheathed multi-core fireproof electric cable |
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| Country | Link |
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| CN (1) | CN202796160U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198892A (en) * | 2013-04-25 | 2013-07-10 | 桂林国际电线电缆有限责任公司 | Novel composite flame-retardant cable |
| CN103903795A (en) * | 2014-04-04 | 2014-07-02 | 江苏中辰电缆有限公司 | Fireproof power cable |
| CN103903803A (en) * | 2014-03-04 | 2014-07-02 | 江苏珠影特种电缆有限公司 | Three-core medium-pressure waterproof and fire-resistant cable |
| CN104464899A (en) * | 2013-09-24 | 2015-03-25 | 江苏宝安电缆有限公司 | Ceramic fireproof flexible cable |
-
2012
- 2012-07-23 CN CN 201220356862 patent/CN202796160U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198892A (en) * | 2013-04-25 | 2013-07-10 | 桂林国际电线电缆有限责任公司 | Novel composite flame-retardant cable |
| CN104464899A (en) * | 2013-09-24 | 2015-03-25 | 江苏宝安电缆有限公司 | Ceramic fireproof flexible cable |
| CN103903803A (en) * | 2014-03-04 | 2014-07-02 | 江苏珠影特种电缆有限公司 | Three-core medium-pressure waterproof and fire-resistant cable |
| CN103903795A (en) * | 2014-04-04 | 2014-07-02 | 江苏中辰电缆有限公司 | Fireproof power cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG WANMA CO., LTD. Free format text: FORMER NAME: ZHEJIANG WANMA CABLE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 311305 Ling'an Economic Development Zone, Zhejiang Province, South Ring Road, No. 88, No. Patentee after: ZHEJIANG WANMA CO., LTD. Address before: 311305 Ling'an Economic Development Zone, Zhejiang Province, South Ring Road, No. 88, No. Patentee before: Zhejiang Wanma Cable Co., Ltd. |
|
| 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: 20130313 Termination date: 20160723 |