CN202694915U - Novel single-core fireproof cable without sheath - Google Patents
Novel single-core fireproof cable without sheath Download PDFInfo
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- CN202694915U CN202694915U CN 201220353678 CN201220353678U CN202694915U CN 202694915 U CN202694915 U CN 202694915U CN 201220353678 CN201220353678 CN 201220353678 CN 201220353678 U CN201220353678 U CN 201220353678U CN 202694915 U CN202694915 U CN 202694915U
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Abstract
The utility model relates to a cable and particularly relates to a novel single-core fireproof cable without a sheath. The novel single-core fireproof cable comprises a conductor, wherein a fire-resistant layer is arranged outside the conductor. The novel single-core fireproof cable is characterized in that a compound fire-resistant heat insulation layer produced by adopting a ceramic fireproof and fire-resistant compound tape is sheathed outside the fire-resistant layer, a fireproof layer is arranged outside the compound fire-resistant heat insulation layer, and the fireproof layer is an embossed copper sheath. The novel single-core fireproof cable disclosed by the utility model has the characteristics of good fireproof performance, convenience in mounting, good bending performance, simple processing technology, good fire-resistant and flame-retardant effects, cost saving and the like.
Description
Technical field
The utility model relates to a kind of cable, especially relates to a kind of without the novel single core fireproof cable of sheath.
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 the novel single core fireproof cable of sheath.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of without the novel single core fireproof cable of sheath, comprise conductor, conductor is provided with flame retardant coating outward, it is characterized in that described flame retardant coating is arranged with the composite fire thermal insulation layer that adopts ceramic fireproof＝fire-proof composite band to make outward, described composite fire thermal insulation layer is provided with fireprotection layer outward, and described fireprotection layer is the embossing copper sheath.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.Adopt the embossing copper sheath, not only prevent fires but also can Effective Raise cable bend performance.
As preferably, described flame retardant coating is wrapped fire-resistant isinglass belt on conductor.Adopt the fireproof mica tape insulation, the power frequency dielectric strength of fire-resistant isinglass belt is 10MV/m under the normal temperature, specific insulation 〉=1.0 * 1010 Ω m.
As preferably, described conductor is single core copper conductor.Processing technology is simple, cheap for manufacturing cost.
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 the novel single core fireproof cable of sheath, comprise conductor 1, conductor is provided with flame retardant coating 2 outward, the flame retardant coating 2 outer composite fire thermal insulation layers 3 that adopt ceramic fireproof＝fire-proof composite band to make that are arranged with, be provided with fireprotection layer 4 outside the composite fire thermal insulation layer 3, fireprotection layer 4 is the embossing copper sheath.Flame retardant coating 2 is wrapped fire-resistant isinglass belt on conductor.Conductor is single core copper conductor.
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.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 (3)
1. one kind without the novel single core fireproof cable of sheath, comprise conductor (1), conductor is provided with flame retardant coating (2) outward, it is characterized in that the outer composite fire thermal insulation layer (3) that adopts ceramic fireproof＝fire-proof composite band to make that is arranged with of described flame retardant coating (2), described composite fire thermal insulation layer (3) is outer to be provided with fireprotection layer (4), and described fireprotection layer (4) is the embossing copper sheath.
2. according to claim 1 without the novel single core fireproof cable of sheath, it is characterized in that described flame retardant coating (2) is wrapped fire-resistant isinglass belt on conductor.
3. according to claim 1 and 2 without the novel single core fireproof cable of sheath, it is characterized in that described conductor is single core copper conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220353678 CN202694915U (en) | 2012-07-20 | 2012-07-20 | Novel single-core fireproof cable without sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220353678 CN202694915U (en) | 2012-07-20 | 2012-07-20 | Novel single-core fireproof cable without sheath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202694915U true CN202694915U (en) | 2013-01-23 |
Family
ID=47550497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220353678 Expired - Fee Related CN202694915U (en) | 2012-07-20 | 2012-07-20 | Novel single-core fireproof cable without sheath |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202694915U (en) |
-
2012
- 2012-07-20 CN CN 201220353678 patent/CN202694915U/en not_active Expired - Fee Related
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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: 20130123 Termination date: 20160720 |