CN203826043U - Flexible-mineral insulation fireproof cable - Google Patents
Flexible-mineral insulation fireproof cable Download PDFInfo
- Publication number
- CN203826043U CN203826043U CN201420192722.7U CN201420192722U CN203826043U CN 203826043 U CN203826043 U CN 203826043U CN 201420192722 U CN201420192722 U CN 201420192722U CN 203826043 U CN203826043 U CN 203826043U
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- cable
- glass fiber
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- fiber tape
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Abstract
The utility model discloses a flexible-mineral insulation fireproof cable. The flexible-mineral insulation fireproof cable comprises a plurality of conductors, each conductor is wrapped with a mineral insulation layer to form an insulation wire core, the insulation wire cores are wrapped with polyolefin material color separation protection layers in order, the insulation wire cores wrapped with the polyolefin color separation protection layers are enclosed to form a ring so as to form a cable core, the cable core is wrapped with a glass fiber tape lapped covering, filling layers, which are composed of glass fiber tapes and glass fiber ropes, are disposed between the glass fiber tape lapped covering and the cable core and at the center of the cable core, and the glass fiber tape lapped covering is wrapped with a high-flame-retardant oxygen-isolation layer and a low-smoke halogen-free polyolefin sheath layer. The flexible-mineral insulation fireproof cable is reasonable in structural design, and the insulation characteristic and high-temperature-resistance performance of the cable can fully satisfy requirements of the cable under high-temperature environment.
Description
technical field:
The utility model relates to fireproof cable, relates in particular to a kind of flexible mineral matter insulated cable.
background technology:
At present, on domestic market, there are two kinds of fireproof cables, a kind of is to adopt magnesia powder as traditional mineral insulated cable of insulation, model is BTTZ, another kind is to adopt glass fibre and mica composite material as the inorganic mineral insulation cable insulating, the cable of metallic sheath, model is YTTW, the fireproof cable of current version is all deposited defect in the following areas in the application of cable and production process: using the metal oxides such as magnesium oxide as insulation 1., the manufacture method of the insulated cable that the metal tube of take is sheath is too complicated, technological process is longer, the equipment needing is also more, labour cost is high, automaticity is lower.2. in the course of processing, to heat-treat with drawing procedure and will repeatedly repeatedly carry out, finally go out finished product.3. cable is subject to the restriction of material and technique, and cable length is shorter, and joint is more, and hardness is larger, and any length in the time of cannot accomplishing to need and soft crooked, lays into wasting time and energy.4. because metallic sheath connects and the unreliability of waterproof problem generation cable, 5. do not have during the welding of gold sheath the trachoma that flaw detection is arrived to produce larger impact useful life to the insulation property of cable and cable, 6. the use of metallic sheath is producing corrosion to environmental impact in running for a long time.
Therefore, need designer's construction of cable reasonable in design, meet the user demand under hot environment.
utility model content:
In order to make up prior art problem, the purpose of this utility model is to provide a kind of flexible mineral matter insulated cable, and structural design advantages of simple can fully meet the user demand under hot environment.
The technical solution of the utility model is as follows:
Flexible mineral matter insulated cable; it is characterized in that: comprise many conductors; many conductors are coated with mineral insulation layer and form insulated wire cores; insulated wire cores is coated with polyolefine material color separation protective layer outward successively; the insulated wire cores of coated polyolefin color separation protective layer surrounds annular and forms cable core; cable core is coated with glass fiber tape lapping layer; between glass fiber tape lapping layer and cable core and cable core center is provided with the packed layer of glass fiber tape and glass cord formation, and glass fiber tape lapping layer is coated with high flame retardant oxygen barrier layer, low-smoke halogen-free polyolefin restrictive coating.
Described flexible mineral matter insulated cable, is characterized in that: after cable cabling, external diameter is less than 25mm, bending radius is not less than 4 times of diameters; The outside diameter of cable is not less than 25mm, and bending radius should be not less than 6 times of diameters.
Described flexible mineral matter insulated cable, is characterized in that: many described number of conductors are 5, comprises 3 large conductors and 2 little conductors, and many conductors all adopt oxygen-free copper conductor.
The utility model has the advantages that:
1, WD-BBTRZ flexible mineral matter insulated cable structural design and raw material application:
A, cable conductor material adopt stranded the forming of high-quality copper free wire, and its requirement on electric performance meets GB/T3956 standard-required, in production process, all adopt and press drawing circular configuration, prevent the damage of cable conductor to mineral insulation layer.B, cable material insulation have its function admirable of muscovite band (density: 2.7-2.9g/cm of fire protecting performance
3; Hardness (Mohs) 2.8; Fusing point 1200-1300 degree Celsius; Specific insulation 10
16=10
17Ω .cm; Puncture voltage 159-317KV/mm), in wrapped process, mica tape Duplication should be not less than 50%, has guaranteed the insulation characterisitic of cable.C, for guaranteeing that mineral insulation layer is injury-free in stranding or production process, be convenient to install and prevent from making moist, affect electric property in fire prevention cable installation process in cable fixedly lays running, at mineral insulation layer, extrude the insulation color separation protective layer of one deck low-smoke halogen-free polyolefin outward.D, fireproof cable stranding is wrapped and packing material all adopts glass fiber tape and glass cord, and it has very excellent fire-resistant and flame-retarding characteristic.For guaranteeing the fire performance of fireproof cable, after cable cabling, extrude one deck high flame retardant oxygen barrier layer, the oxygen content that reduces cable space has more good fire protecting performance, and E, fireproof cable oversheath adopt the orange sheath of low-smoke halogen-free polyolefin.Being mainly that fireproof is conspicuous identifies with uniqueness.Facilitate the identification of fireproof cable.Electrical property and the physical property of WD-BBTRZ flexible mineral matter insulated cable should meet GB/T12706.1 standard-required; The fireproofing technique of WD-BBTRZ flexible mineral matter insulated cable requires to meet BS6387 standard;
2, WD-BBTRZ flexible mineral matter insulated cable fire prevention test
Finished cable of the present utility model can meet by the relevant regulations of C.W.Z in BS6378 standard to be tested, and applies corresponding rated voltage unbroken test requirements document before fray-out of flame of this product regulation on sample.
3, the WD-BBTRZ flexible mineral matter insulated cable test of preventing fires merely
The all heart yearns that are no less than in length on the finished cable of 1200mm are all connected with specified test voltage, and under force ventilated state, flame temperature is the flame of 950 ± 40 degrees Celsius, and cable can continue, for fire, fuse burnout phenomenon does not occur for 3 hours.
4, fire-proof and water-proof test
At finished product, get arbitrarily the sample of length 1500mm, sheath and outer covering that 100mm is peeled off at two ends are placed on cable bearer, all heart yearns are all connected with specified test voltage, maximum Leakage Current is 3A, under forced ventilation state, flame temperature is 950 ± 40 degrees Celsius, continue for fiery 30min, front 15min is simple burning during this time, or part is for burn and sprinkle water and carry out simultaneously, hydraulic pressure control is between 250kpa to 350Kpa, and discharge is controlled between every square metre of second 0.25L to 0.30L, and cable can bear fuse burnout phenomenon does not occur.
5, fire prevention shock test
Cable can be under the shock test regulation requiring in accordance with regulations requires, and the test of preventing fires is tested 950 ± 40 degrees Celsius of flame temperatures and can be continued, for fiery 15min, fuse burnout phenomenon not to occur.
6, the production technique structure mineral insulation of cable all meets GB/T12706.1 standard-required outward, and the physics of electrical property and sheath material is thought all should to meet GB/T12706.1 standard gauge provisioning request.
7, WD-BBTRZ flexible mineral matter insulated cable cable properties
A. cable conductor permission long-term work maximum temperature is 125 degrees Celsius;
B. temperature should be not less than 0 degree Celsius during cabling;
C. the permission bending radius of cable should be not less than: the outside diameter of cable (D) is less than 25mm, should be not less than 4D; The outside diameter of cable (D) be 25 and more than, should be not less than 6D.
8, development and Design of the present utility model is tested by relevant criterion requirement through trial production, product reaches and the similar performance of MICC cable, cable can be under the flame condition of 950 degrees Celsius, continues 3 hours, and the wiring terminal running into while having avoided the conventional MICC cable of design and installation.
accompanying drawing explanation:
Fig. 1 is structural representation of the present utility model.
embodiment:
Referring to accompanying drawing:
Flexible mineral matter insulated cable; comprise many conductors 1; many conductors 1 are coated with mineral insulation layer 2 and form insulated wire cores; insulated wire cores is coated with polyolefine material color separation protective layer 3 outward successively; the insulated wire cores of coated polyolefin color separation protective layer 3 surrounds annular and forms cable core; cable core is coated with glass fiber tape lapping layer 4; between glass fiber tape lapping layer 4 and cable core and cable core center is provided with the packed layer 5 of glass fiber tape and glass cord formation, and glass fiber tape lapping layer 4 is coated with high flame retardant oxygen barrier layer 6, low-smoke halogen-free polyolefin restrictive coating 7.
After cable cabling, external diameter is less than 25mm, and bending radius is not less than 4 times of diameters; The outside diameter of cable is not less than 25mm, and bending radius should be not less than 6 times of diameters.
Many conductor 1 quantity are 5, comprise 3 large conductors and 2 little conductors, and many conductors all adopt oxygen-free copper conductor.
Designer strictly requires standard > > standard and GB/T12706.1 < < rated voltage 1KV(Um=1.2KV with reference to the BS6387 < < cable performance that holding circuit is intact under fire condition) to 35KV(Um=40.5KV) extrusion insulating power cable and annex first: rated voltage 1KV(Um=1.2KV) to 3KV(Um=3.6KV) the WD-BBTRZ flexible mineral matter insulated cable of the cable > > standard development production defect in the majority above having overcome, and can produce 300mm2 with the cable of lower section, covered the demand of all size wiring architecture cable.Cable properties meets BS6387 standard-required simultaneously, even in the situation that ignition temperature reaches 950 degrees Celsius, cable is appointed the feature that can keep continuing for 3 hours operation.
Claims (3)
1. a flexible mineral matter insulated cable, it is characterized in that: comprise many conductors, many conductors are coated with mineral insulation layer and form insulated wire cores, insulated wire cores is coated with polyolefine material color separation protective layer outward successively, the insulated wire cores of coated polyolefin color separation protective layer surrounds annular and forms cable core, cable core is coated with glass fiber tape lapping layer, between glass fiber tape lapping layer and cable core and cable core center is provided with the packed layer of glass fiber tape and glass cord formation, glass fiber tape lapping layer is coated with high flame retardant oxygen barrier layer, low-smoke halogen-free polyolefin restrictive coating.
2. flexible mineral matter insulated cable according to claim 1, is characterized in that: after cable cabling, external diameter is less than 25mm, and bending radius is not less than 4 times of diameters; The outside diameter of cable is not less than 25mm, and bending radius should be not less than 6 times of diameters.
3. flexible mineral matter insulated cable according to claim 1, is characterized in that: many described number of conductors are 5, comprises 3 large conductors and 2 little conductors, and many conductors all adopt oxygen-free copper conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420192722.7U CN203826043U (en) | 2014-04-18 | 2014-04-18 | Flexible-mineral insulation fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420192722.7U CN203826043U (en) | 2014-04-18 | 2014-04-18 | Flexible-mineral insulation fireproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203826043U true CN203826043U (en) | 2014-09-10 |
Family
ID=51481517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420192722.7U Expired - Fee Related CN203826043U (en) | 2014-04-18 | 2014-04-18 | Flexible-mineral insulation fireproof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203826043U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104616783A (en) * | 2015-01-22 | 2015-05-13 | 安徽凌宇电缆科技有限公司 | Mineral insulated flexible fireproof cable |
| WO2018040646A1 (en) * | 2016-08-31 | 2018-03-08 | 中天射频电缆有限公司 | Protective sheath and leakage cable using protective sheath |
| CN108986976A (en) * | 2018-09-11 | 2018-12-11 | 贵州西南制造产业园有限公司 | A kind of cable of fire-retardant fireproof |
-
2014
- 2014-04-18 CN CN201420192722.7U patent/CN203826043U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104616783A (en) * | 2015-01-22 | 2015-05-13 | 安徽凌宇电缆科技有限公司 | Mineral insulated flexible fireproof cable |
| WO2018040646A1 (en) * | 2016-08-31 | 2018-03-08 | 中天射频电缆有限公司 | Protective sheath and leakage cable using protective sheath |
| CN108986976A (en) * | 2018-09-11 | 2018-12-11 | 贵州西南制造产业园有限公司 | A kind of cable of fire-retardant fireproof |
| CN108986976B (en) * | 2018-09-11 | 2023-07-25 | 贵州安众成电线电缆有限公司 | Flame-retardant fireproof cable |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20160418 |