CN102394121A - Medium-voltage fire-resistant cable - Google Patents
Medium-voltage fire-resistant cable Download PDFInfo
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- CN102394121A CN102394121A CN2011103274550A CN201110327455A CN102394121A CN 102394121 A CN102394121 A CN 102394121A CN 2011103274550 A CN2011103274550 A CN 2011103274550A CN 201110327455 A CN201110327455 A CN 201110327455A CN 102394121 A CN102394121 A CN 102394121A
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Abstract
The invention discloses a medium-voltage fire-resistant cable which comprises at least one conductor (1), wherein the exterior of the conductor (1) is provided with a conductor shielding layer (2), an insulating layer (3), an insulation shielding layer (4), a metal shielding layer (6), a fire-resistant layer (8), an oxygen-and-thermal barrier layer (9) and an outer sheath (10) in sequence, wherein the fire-resistant layer (8) is a ceramic silicon rubber layer; and when the number of the conductor (1) is three, a flame-retardant asbest rope packing layer (5) is arranged between the metal shielding layer (6) and the fire-resistant layer (8), and the exterior of the flame-retardant asbest rope packing layer (5) is provided with a non-alkaline glassfibre belting cabling winding layer (7). In the technical scheme of the invention, a hard ceramic armor can be formed by virtue of high-temperature burning and a protection line can be kept unblocked, the longer the burning time is, the harder the ceramic armor is, the ceramic armor has good insulating property and can fully ensure the cable to be fire-resistant and voltage-resistant; and meanwhile, the medium-voltage fire-resistant cable has low cost, is easy to install and lay and is convenient to use.
Description
Technical field
The present invention relates to a kind of power transmission cable, specifically relate to press fire-resisting cable in a kind of low cigarette, Halogen, fire-retardant, fire-resistant, the environment-friendly type.
Background technology
Along with the continuous progress of society; The raising of living standards of the people, people more and more pay attention to the safety in the life, but people are when pursuing high-quality life, enjoying clustering lives such as emporium, grand theater; Fire safety is also more and more important and urgent; Reporting of comprehensive each conflagration, the wherein spontaneous combustion of electric wire and the fire that causes accounts for significant proportion, and at fire again because the reason of electric wire causes the ratio of personnel self injures and deaths also to occupy very big ratio; For example; The very short time was born the electric wire generation electric power transfer interruption of electric power transfer after fire took place, and caused elevator, illumination cisco unity malfunction, caused injures and deaths and people are tried in any path one could without heeding which one chose.
At present the fire-resisting cable range of application is extensively, like: TV station, hospital, cinema, commercial building, subway, tunnel, railway, airport, station, large-scale public physical culture, public place of entertainment, large supermarket, hotel, skyscraper, military installations, nuclear power station, colliery, chemical industry, medicine, iron and steel, metallurgy, boats and ships, civilian or the like.
Usually the structure of fire-resisting cable employing is wrapped mica tape, and not only production efficiency is low, and the control difficulty is big, reliability is low, and mica tape can not bear too high voltage.It is wrapped at conductive surface that mica tape is wanted, yet smooth rounding is wanted at the interface between midium voltage cable insulation and the conductor, has one deck to extrude semi-conductive layer; Prevent that office is high-volume excessive; If mica tape is wrapped at conductive surface, will cause the cable local discharge amount to exceed standard, critical defect appears.
In addition, mica tape burning back hardening, embrittlement are easy to come off.
Summary of the invention
The present invention has overcome the deficiency of prior art, and a kind of flameproof effect cable preferably is provided.
For solving above-mentioned technical problem, the present invention adopts following technical scheme:
A kind of fire-resisting cable comprises at least one conductor, and said conductor is disposed with conductor shield, insulating barrier, insulation screen, metal screen layer, flame retardant coating, oxygen barrier thermal insulation layer and oversheath outward, and said flame retardant coating is the potteryization silastic-layer.
In order to realize the present invention better, further technical scheme is:
As preferably: above-mentioned conductor shield is the semiconductive inner shield.
As preferably: above-mentioned insulating barrier is crosslinked polyetylene insulated layer.
As preferably: above-mentioned insulation screen is the semiconductive external shield.
As preferably: above-mentioned metal screen layer is the copper strips shielding.
As preferably: above-mentioned thermal insulation layer is the refractory inorganic fiber layer.
As preferably: above-mentioned oversheath is a polyvinyl chloride layer.
The present invention can also be:
As preferably: above-mentioned conductor is three, and said every conductor is disposed with conductor shield, insulating barrier, insulation screen and metal screen layer outward, is provided with fire-retardant asbestos cord packed layer between said metal screen layer and the flame retardant coating.
As preferably: above-mentioned fire-retardant asbestos cord packed layer is outside equipped with alkali-free glass wool band stranding lapping layer.
Compared with prior art, the invention has the beneficial effects as follows:
In the technical scheme of the present invention, flame retardant coating is a potteryization silicon rubber, can form hard ceramic armouring after this cable high-temperature burning; Protection circuit is unimpeded, and temperature is high more, and the ablation time is long more; Pottery armour body is hard more, and has the good insulation performance performance, can guarantee the withstand voltage of cable fully.Product cost is lower than existing fire-resisting cable simultaneously, is easy to install lay, and is easy to use.
In addition, potteryization silicon rubber is callable " green material ", also has good economic benefits.
Description of drawings
Fig. 1 is a single-core cable structural representation of the present invention;
Fig. 2 is a three-core cable structural representation of the present invention.
Wherein, the pairing name of the Reference numeral in the accompanying drawing is called:
The 1-conductor, 2-conductor shield, 3-insulating barrier, 4-insulation screen, the fire-retardant asbestos cord packed layer of 5-, 6-metal screen layer, 7-alkali-free glass wool band stranding lapping layer, 8-flame retardant coating, 9-oxygen barrier thermal insulation layer, 10-oversheath.
Embodiment
Below in conjunction with Figure of description the present invention is done to specify further, but execution mode of the present invention is not limited thereto.
As shown in Figure 1; Press fire-resisting cable in a kind of; Comprise at least one conductor 1, be disposed with conductor shield 2, insulating barrier 3, insulation screen 4, metal screen layer 6, flame retardant coating 8, oxygen barrier thermal insulation layer 9 and oversheath 10 outside the said conductor 1, said flame retardant coating 8 is the potteryization silastic-layer.
Above-mentioned conductor shield 2 is the semiconductive inner shield; Above-mentioned insulating barrier 3 is crosslinked polyetylene insulated layer; Above-mentioned insulation screen 4 is the semiconductive external shield; Above-mentioned metal screen layer 6 is the copper strips shielding; Above-mentioned oxygen barrier thermal insulation layer 9 is the refractory inorganic fiber layer; Above-mentioned oversheath 10 is a polyvinyl chloride layer.
The fireproof cable of more than describing has the flame resistant cable refractory ability; Standing under the direct combustion case of flame; (being not less than 3h) within a certain period of time is not short-circuited and open circuit fault; Guaranteeing to continue power supply to keep illumination and transmission signals, the protection personnel have the time enough safe escape, and are beneficial to fire extinguishing and reduce the loss.
Residue after common fire-retardant, low cigarette macromolecular material and the silicon rubber burning is ashes, very fast short circuit after being burnt; Potteryization fire-resisting cable silicon rubber has extraordinary fire prevention, fire-resistant, fire-retardant, low cigarette, nontoxic performance, and the residue after its burning is the ceramic-like duricrust simultaneously, duricrust not fusion under fire (600-1300 ℃) environment; Do not drip; Guarantee is not in the not short circuit of situation line of fire, open circuit, thereby guaranteed the unimpeded of circuit, plays firm protective effect; Life and salvage operation for personnel gain time to greatest extent.
Potteryization silastic material density 1.42g/cm3; Tradition refractory material mica tape density >=2.0g/cm3, magnesia mineral material density 8.9g/cm3, the thickness of insulation and sheath is certain in cable product; Therefore material volume is identical; So potteryization silicon rubber has just descended about 40%, therefore relatively comprehensive, economic benefit is obvious.As: Costco Wholesale is lower than mica tape, far below the magnesia mineral insulated cable, in can satisfying, the requirement of low, high pressure fireproof electric wire, can make insulation, flame retardant coating and can make sheath again;
As shown in Figure 2; Press fire-resisting cable in a kind of; Conductor 1 is three; Be disposed with conductor shield 2, insulating barrier 3, insulation screen 4 and metal screen layer 6 outside the said every conductor 1, be provided with fire-retardant asbestos cord packed layer 5 between said metal screen layer 6 and the flame retardant coating 8, described fire-retardant asbestos cord packed layer 5 is outside equipped with alkali-free glass wool band stranding lapping layer 7; Outside the alkali-free glass wool band stranding lapping layer 7 is flame retardant coating 8, oxygen barrier thermal insulation layer 9 and oversheath 10 successively, and flame retardant coating 8 is the potteryization silastic-layer.
Claims (9)
1. press fire-resisting cable in one kind; Comprise at least one conductor (1); It is characterized in that: said conductor (1) is outer to be disposed with conductor shield (2), insulating barrier (3), insulation screen (4), metal screen layer (6), flame retardant coating (8), thermal insulation layer (9) and oversheath (10), and said flame retardant coating (8) is the potteryization silastic-layer.
2. press fire-resisting cable in according to claim 1, it is characterized in that: described conductor shield (2) is the semiconductive inner shield.
3. press fire-resisting cable in according to claim 1, it is characterized in that: described insulating barrier (3) is crosslinked polyetylene insulated layer.
4. press fire-resisting cable in according to claim 1, it is characterized in that: described insulation screen (4) is the semiconductive external shield.
5. press fire-resisting cable in according to claim 1, it is characterized in that: described metal screen layer (6) is the copper strips shielding.
6. press fire-resisting cable in according to claim 1, it is characterized in that: described oxygen barrier thermal insulation layer (9) is the refractory inorganic fiber layer.
7. press fire-resisting cable in according to claim 1, it is characterized in that: described oversheath (10) is a polyvinyl chloride layer.
8. press fire-resisting cable in according to claim 1; It is characterized in that: described conductor (1) is three; Said every conductor (1) is outer to be disposed with conductor shield (2), insulating barrier (3), insulation screen (4) and metal screen layer (6), is provided with fire-retardant asbestos cord packed layer (5) between said metal screen layer (6) and the flame retardant coating (8).
9. press fire-resisting cable in according to claim 1, it is characterized in that: described fire-retardant asbestos cord packed layer (5) is outside equipped with alkali-free glass wool band stranding lapping layer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110327455.0A CN102394121B (en) | 2011-10-25 | 2011-10-25 | Middle pressure fire-resisting cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110327455.0A CN102394121B (en) | 2011-10-25 | 2011-10-25 | Middle pressure fire-resisting cable |
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| Publication Number | Publication Date |
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| CN102394121A true CN102394121A (en) | 2012-03-28 |
| CN102394121B CN102394121B (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110327455.0A Active CN102394121B (en) | 2011-10-25 | 2011-10-25 | Middle pressure fire-resisting cable |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881373A (en) * | 2012-10-18 | 2013-01-16 | 江苏荣宜电缆有限公司 | Fire-resisting cable |
| CN102890985A (en) * | 2012-09-26 | 2013-01-23 | 江苏山峰电缆有限公司 | Dual-core power cable |
| CN102938272A (en) * | 2012-11-19 | 2013-02-20 | 四川明星电缆股份有限公司 | Production method for conductors for fire-resistant middle-high voltage cables |
| CN102938275A (en) * | 2012-11-19 | 2013-02-20 | 四川明星电缆股份有限公司 | Production method of fireproof middle and high voltage cables |
| CN103050178A (en) * | 2012-11-14 | 2013-04-17 | 深圳市沃尔核材股份有限公司 | Fire-proof power cable |
| CN103065718A (en) * | 2013-01-28 | 2013-04-24 | 深圳市沃尔核材股份有限公司 | Fire-resistant power cable |
| CN103413606A (en) * | 2013-07-29 | 2013-11-27 | 成都亨通光通信有限公司 | Fireproof optical cable |
| CN103700433A (en) * | 2013-12-04 | 2014-04-02 | 江苏南瑞淮胜电缆有限公司 | Fire-resistant medium-voltage flexible cable |
| CN103928091A (en) * | 2013-09-27 | 2014-07-16 | 安徽航天电缆集团有限公司 | High-temperature-resistant cable for computers and instruments |
| CN104103372A (en) * | 2014-07-02 | 2014-10-15 | 安徽华通电缆集团有限公司 | Cross linked polyethylene insulating refractory power cable with rated voltage of 110kv |
| CN105336428A (en) * | 2014-08-08 | 2016-02-17 | 上海朗达电缆（集团）有限公司 | Fire-resistant medium voltage cable |
| CN105741936A (en) * | 2016-03-24 | 2016-07-06 | 江苏建中能源科技有限公司 | Fireproof cable |
| CN105957587A (en) * | 2016-06-30 | 2016-09-21 | 江苏珠影特种电缆有限公司 | Improved metal shielding monitoring type flame resistant cable for coal mine |
| CN106158133A (en) * | 2016-08-29 | 2016-11-23 | 远程电缆股份有限公司 | Middle pressure fireproof power cable |
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| CN2891229Y (en) * | 2006-03-03 | 2007-04-18 | 江苏亨通电力电缆有限公司 | Halogen-free low-smoke flame retardant chemical corrosion resistant power cable with rated voltage <=35kV |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890985A (en) * | 2012-09-26 | 2013-01-23 | 江苏山峰电缆有限公司 | Dual-core power cable |
| CN102881373A (en) * | 2012-10-18 | 2013-01-16 | 江苏荣宜电缆有限公司 | Fire-resisting cable |
| CN103050178A (en) * | 2012-11-14 | 2013-04-17 | 深圳市沃尔核材股份有限公司 | Fire-proof power cable |
| CN103050178B (en) * | 2012-11-14 | 2016-06-15 | 深圳市沃尔核材股份有限公司 | A kind of fireproof power cable |
| CN102938275B (en) * | 2012-11-19 | 2015-08-12 | 四川明星电缆股份有限公司 | A kind of fire-resistant medium and high voltage cable manufacture method |
| CN102938272B (en) * | 2012-11-19 | 2015-03-25 | 四川明星电缆股份有限公司 | Production method for fire-resistant middle-high voltage cables |
| CN102938272A (en) * | 2012-11-19 | 2013-02-20 | 四川明星电缆股份有限公司 | Production method for conductors for fire-resistant middle-high voltage cables |
| CN102938275A (en) * | 2012-11-19 | 2013-02-20 | 四川明星电缆股份有限公司 | Production method of fireproof middle and high voltage cables |
| CN103065718B (en) * | 2013-01-28 | 2015-08-05 | 深圳市沃尔核材股份有限公司 | A kind of fireproof power cable |
| CN103065718A (en) * | 2013-01-28 | 2013-04-24 | 深圳市沃尔核材股份有限公司 | Fire-resistant power cable |
| CN103413606A (en) * | 2013-07-29 | 2013-11-27 | 成都亨通光通信有限公司 | Fireproof optical cable |
| CN103928091A (en) * | 2013-09-27 | 2014-07-16 | 安徽航天电缆集团有限公司 | High-temperature-resistant cable for computers and instruments |
| CN103700433A (en) * | 2013-12-04 | 2014-04-02 | 江苏南瑞淮胜电缆有限公司 | Fire-resistant medium-voltage flexible cable |
| CN104103372A (en) * | 2014-07-02 | 2014-10-15 | 安徽华通电缆集团有限公司 | Cross linked polyethylene insulating refractory power cable with rated voltage of 110kv |
| CN105336428A (en) * | 2014-08-08 | 2016-02-17 | 上海朗达电缆（集团）有限公司 | Fire-resistant medium voltage cable |
| CN105741936A (en) * | 2016-03-24 | 2016-07-06 | 江苏建中能源科技有限公司 | Fireproof cable |
| CN105957587A (en) * | 2016-06-30 | 2016-09-21 | 江苏珠影特种电缆有限公司 | Improved metal shielding monitoring type flame resistant cable for coal mine |
| CN106158133A (en) * | 2016-08-29 | 2016-11-23 | 远程电缆股份有限公司 | Middle pressure fireproof power cable |
Also Published As
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| CN102394121B (en) | 2015-08-19 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Medium voltage fire resistant cable Effective date of registration: 20211020 Granted publication date: 20150819 Pledgee: Bohai Bank Co.,Ltd. Chengdu Branch Pledgor: SICHUAN XINDIAN CABLES Co.,Ltd. Registration number: Y2021510000259 |
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Date of cancellation: 20221130 Granted publication date: 20150819 Pledgee: Bohai Bank Co.,Ltd. Chengdu Branch Pledgor: SICHUAN XINDIAN CABLES CO.,LTD. Registration number: Y2021510000259 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |