CN202839092U - Flexible fire-proof cable - Google Patents
Flexible fire-proof cable Download PDFInfo
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- CN202839092U CN202839092U CN 201220454091 CN201220454091U CN202839092U CN 202839092 U CN202839092 U CN 202839092U CN 201220454091 CN201220454091 CN 201220454091 CN 201220454091 U CN201220454091 U CN 201220454091U CN 202839092 U CN202839092 U CN 202839092U
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- flexible fire
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Abstract
The utility model discloses a flexible fire-proof cable which comprises a conductor located at the center of the cable. An insulation layer which is composed of a refractory material is arranged outside the conductor. The outermost layer is provided with a metal sheath. The nominal cross section of the conductor is 1 to 630mm<2>. The thickness of the insulation layer is 0.8 to 2.2mm. The metal sheath is an embossed metal sheath, and the thickness is 0.25 to 0.8mm. According to the utility model, the compressive strength of the cable is improved; the flexibility of the cable is improved; and the cable is easy to bend, and is convenient for packaging and transportation.
Description
Technical field
The utility model relates to a kind of power cable, is specially a kind of flexible fire-proof cable.
Background technology
During breaking out of fire, some equipment also need the normal operation of electric power system, but existing cable high temperature resistant require limited, when temperature reaches one regularly, cable namely may be fused, and then power consumption equipment can't be run well, and has influence on the needs of the on-the-spot common people's escape and fire fighting.There is the insulating barrier of the fire-resisting cable of product to adopt fire-resistant inorganic constituents on the market now, such as magnesium chloride, mica, asbestos etc., to improve the fire resistance of cable; Also have product to adopt seamless copper pipe or stainless steel tube sheath, compare traditional plastic sheath, copper pipe or stainless steel tube sheath have better fire resistance.The filling amount of inorganic matter and the processing of sheath will directly have influence on the flexibility of cable, proof voltage, fire-resistant requirement are higher, the loading of inorganic matter is just more, flexibility is lower, fire-resistant requirement conflicts mutually with flexible the requirement, increased undoubtedly the design difficulty of cable, and existing market has larger demand to rated voltage 0.6/1kV and following metallic sheath flexible mineral insulated cable, but product is only applicable to 0.75KV more on the market.
The utility model content
Technical problem to be solved in the utility model is for cable higher fire-resistant requirement and flexible requirement, and a kind of rated voltage 0.6/1kV and following metallic sheath flexible mineral insulated cable of being suitable for is provided.
Technical scheme:
The utility model provides a kind of flexible fire-proof cable scheme, and it will overcome the deficiency of the traditional fireproof cable in the background technology.
Concrete scheme is as follows:
A kind of flexible fire-proof cable comprises the conductor that is positioned at cable center, and conductor is provided with the insulating barrier that is comprised of refractory material outward, and outermost layer is provided with metallic sheath, and the nominal cross of described conductor is 1～630mm
2, described thickness of insulating layer is 0.8～2.2mm, and described metallic sheath is the metallic sheath of embossing, and thickness is 0.25～0.8mm.
In one preferred embodiment, described conductor is single cord, and the nominal cross of described conductor is 4～6mm
2, the nominal thickness of described insulating barrier is 1mm, and described metallic sheath is copper sheath or stainless steel sheath, and described copper sheath thickness is 0.4mm, and described stainless steel sheath thickness is 0.25mm.
In one preferred embodiment, described conductor is concentric lay conductor, and the nominal cross of described conductor is 25～630mm
2, the nominal thickness of described insulating barrier is for being no less than 1.2mm, and described metallic sheath is copper sheath or stainless steel sheath, and described copper sheath thickness is 0.4～0.8mm, and described stainless steel sheath thickness is 0.25～0.4mm.
In one preferred embodiment, described insulating barrier is that the conductor at the wrapped center of double-sided glass fiber reinforcement type synthetic mica tape forms.
In one preferred embodiment, the embossing of described metallic sheath is screw thread.
In one preferred embodiment, described metallic sheath is extruded with the anticorrosion sheath that is comprised of the low smoke, zero halogen polyolefin outward.
The technical program is compared with background technology, and it has following advantage:
1, increase thickness of insulating layer, improved the compressive resistance of cable, the industrial frequency AC test voltage that cable can be born can be brought up to 3.5KV by original 2.5KV;
2, the raising of compressive resistance makes its applicable rated voltage rise to 0.6/1KV, and the product applicable surface is wider, and being well positioned to meet rated voltage is the cable demand of 1KV;
3, the increase of insulating barrier has improved its fire-resistant degree, its fire resistance test meets the requirement of GB/T18216.31-2008, it is 950～1000 ℃ in flame temperature, its burning time, the 90min by traditional fire-resisting cable brought up to 180min, when occuring with the assurance accident, there is the more sufficient time to keep the running of electric power system;
4, suitably reduce metallic sheath thickness, carry out simultaneously embossing and process, the protection when guaranteeing sheath to cable fire on the one hand on the other hand, can increase the flexibility of cable, makes its bending easier, is convenient to packing and transportation.
Description of drawings
Fig. 1 is the structural representation of embodiment 1.
Fig. 2 is the structural representation of embodiment 2.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model done further specifying,
One preferred embodiment as shown in Figure 1, cable from inside to outside, it comprises the copper conductor that is positioned at cable center, insulating barrier, fiber-filled and outer field copper metallic sheath and anticorrosion sheath, internal copper conductor are that single cord 1 forms, the sectional area of single cord 1 is 1mm
2
Single cord 1 outer wrapped synthetic mica tape 2 forms insulated wire cores, has guaranteed between the compactness and single cord of cable core the electric insulation level between single cord and copper sheath.Three bar insulation core twisted synthesizing cables, wrapped double-sided glass fiber reinforcement type synthetic mica tape forms insulating barrier 4 on cable core, its nominal thickness is 1mm, cable core adopts alkali-free glass fibre gasket for packing 3 to fill simultaneously, further guarantee the insulation property of 5 of cable conductor and copper sheaths, and cable profile roundness satisfies the regulation requirement.The outer T2 of employing soft copper band is vertical to be wrapped, welds, and forms copper sheath 5, because insulating barrier is thicker, for guaranteeing the soft flexible of cable, copper sheath 5 THICKNESS CONTROL are 0.4mm, and do the embossing processing.Outside copper sheath 5, extrude again the anticorrosion sheath 6 of an employing low smoke, zero halogen polyolefine material, directly be corroded in the contact external worlds to prevent copper sheath 5.
Another preferred embodiment as shown in Figure 2, the places different from embodiment are, its outer layer metal sheath material adopts stainless steel, internal copper conductor adopts twisted wire 1, sectional area is 25mm
2Twisted wire 1 outer wrapped synthetic mica tape 2 forms insulated wire cores, between the compactness that guarantees cable core and different cores and the electric insulation level between core and copper sheath, four bar insulation core twisted synthesizing cables, wrapped double-sided glass fiber reinforcement type synthetic mica tape forms insulating barrier 4 on cable core, its nominal thickness is 1.2mm, cable core adopts alkali-free glass fibre gasket for packing 3 to fill simultaneously, further guarantees the insulation property between cable conductor and copper sheath, and cable profile roundness satisfies the regulation requirement.The outer stainless steel that adopts carries out armouring, because insulating barrier is thicker, for guaranteeing the soft flexible of cable, stainless steel sheath 5 THICKNESS CONTROL are 0.25mm, and do embossing and process.Outside stainless steel sheath 5, extrude again the anticorrosion sheath 6 of an employing low smoke, zero halogen polyolefine material, be corroded to prevent stainless steel sheath 5 from directly contacting extraneous.
Along with the raising of cable nominal area of section, the also corresponding raising of voltage strength that it is applicable, the raising of cable inflow-rate of water turbine also improves the requirement of insulating barrier thereupon, after deliberation, when nominal area of section is 25～35mm
2The time, the insulating barrier nominal thickness requires to be 1.2mm; When nominal area of section is 50-120mm
2The time, thickness of insulating layer requires to be 1.4mm; When nominal area of section is 150～240mm
2The time, thickness of insulating layer requires to be 1.6mm; When nominal area of section is 300-400mm
2The time, thickness of insulating layer is 1.8mm; When sectional area is 500mm
2The time, thickness of insulating layer is 2.0mm; When sectional area is 630mm
2The time, thickness of insulating layer is 2.2mm.The thickness of sheath also increases thereupon, and for guaranteeing the flexibility of cable, the copper sheath nominal thickness is controlled at 0.4-0.6mm; The stainless steel sheath nominal thickness is controlled at 0.25～0.4mm.
The above only is the utility model preferred embodiment, so can not limit according to this scope that the utility model is implemented, the equivalence of namely doing according to the utility model claim and description changes and decorates, and all should belong in the scope that the utility model contains.
Claims (6)
1. a flexible fire-proof cable comprises the conductor that is positioned at cable center, and conductor is provided with the insulating barrier that is comprised of refractory material outward, and outermost layer is provided with metallic sheath, it is characterized in that, the nominal cross of described conductor is 1～630mm
2, described thickness of insulating layer is 0.8～2.2mm, and described metallic sheath is the metallic sheath of embossing, and thickness is 0.25～0.8mm.
2. flexible fire-proof cable according to claim 1 is characterized in that, described conductor is single cord, and the nominal cross of described conductor is 4～6mm
2, the nominal thickness of described insulating barrier is 1mm, and described metallic sheath is copper sheath or stainless steel sheath, and described copper sheath thickness is 0.4mm, and described stainless steel sheath thickness is 0.25mm.
3. flexible fire-proof cable according to claim 1 is characterized in that, described conductor is concentric lay conductor, and the nominal cross of described conductor is 25～630mm
2, the nominal thickness of described insulating barrier is for being no less than 1.2mm, and described metallic sheath is copper sheath or stainless steel sheath, and described copper sheath thickness is 0.4～0.8mm, and described stainless steel sheath thickness is 0.25～0.4mm.
4. according to claim 1 and 2 or 3 described flexible fire-proof cables, it is characterized in that described insulating barrier is that the conductor at the wrapped center of double-sided glass fiber reinforcement type synthetic mica tape forms.
5. according to claim 1 and 2 or 3 described flexible fire-proof cables, it is characterized in that the embossing of described metallic sheath is screw thread.
6. according to claim 1 and 2 or 3 described flexible fire-proof cables, it is characterized in that described metallic sheath is extruded with the anticorrosion sheath that is comprised of the low smoke, zero halogen polyolefin outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220454091 CN202839092U (en) | 2012-09-07 | 2012-09-07 | Flexible fire-proof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220454091 CN202839092U (en) | 2012-09-07 | 2012-09-07 | Flexible fire-proof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202839092U true CN202839092U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220454091 Expired - Fee Related CN202839092U (en) | 2012-09-07 | 2012-09-07 | Flexible fire-proof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202839092U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575787A (en) * | 2013-10-13 | 2015-04-29 | 宁夏海洋线缆有限公司 | Novel wire cable |
| CN105118558A (en) * | 2015-08-20 | 2015-12-02 | 安徽怡和电缆有限公司 | Stainless steel sheath cable |
-
2012
- 2012-09-07 CN CN 201220454091 patent/CN202839092U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575787A (en) * | 2013-10-13 | 2015-04-29 | 宁夏海洋线缆有限公司 | Novel wire cable |
| CN105118558A (en) * | 2015-08-20 | 2015-12-02 | 安徽怡和电缆有限公司 | Stainless steel sheath 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: 20130327 Termination date: 20160907 |