CN106158133A - Middle pressure fireproof power cable - Google Patents
Middle pressure fireproof power cable Download PDFInfo
- Publication number
- CN106158133A CN106158133A CN201610749996.5A CN201610749996A CN106158133A CN 106158133 A CN106158133 A CN 106158133A CN 201610749996 A CN201610749996 A CN 201610749996A CN 106158133 A CN106158133 A CN 106158133A
- Authority
- CN
- China
- Prior art keywords
- power cable
- middle pressure
- fireproof power
- flame
- cable core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
Abstract
The present invention relates to middle pressure fireproof power cable, including several mutually stranded cable core, described cable core includes conductor and extrudes successively from inside to outside in the internal shield outside conductor, insulating barrier, external shielding layer and metal screen layer；Described several cable core is wrapped in flame retardant coating, and there is filling in cable core gap；Oxygen barrier layer and outer jacket is extruded outside flame retardant coating；Present configuration is simple, and simple in construction has excellent fire-resistant, high flame-retardant property, heat resistance, energy-conserving and environment-protective.
Description
Technical field
The present invention relates to field of cable technology, particularly relate to one is pressed fire resistant electric power transmission cable.
Background technology
With the fast-developing skyscraper of China's Urbanization Construction, hotel, large supermarket, hospital, station, machine
Field, subway, tunnel, oil, chemical industry, industrial and mining enterprises etc. are continuously increased, in the pass of densely populated public place and industrial and mining enterprises
In key facility, the importance of safety utilization of electric power shows especially out.As the matched middle pressure power transmission distribution of these places, facility
Security under Fire Conditions for the cable is had higher requirement by system, particularly when breaking out of fire, and can be necessarily
Keep in time cable run unimpeded, maximum limit win the quality time, reduce the loss of casualties and lives and properties,
It is the problem that people constantly probe into.
In a fire often because cable fire fire resistance difference causes supply of electric power to be interrupted, rescue work is caused to be obstructed.
The not fire resistant flame retardant of cable itself, causes flue gas light transmittance too low and discharges toxic gas exacerbating the condition of a disaster, ultimately caused huge
Big personnel, property loss.Existing technical matters is to use conductor to be directly coated with refractory material, is subject to for a long time when running into naked light
Heat, can cause refractory material to come off, and not only pollutes the environment and also can damage production work personnel health；And tradition fire resistant electric power
Cable production technology process there is problems in that 1) wrapped flame retardant coating material on conductor, and owing to the insulation of midium voltage cable is necessary
Use three-layer co-extruded form, so wrapped mica cannot bring and realize the fire-resistant of cable on conductor；2) only resistance to together
Fire bed；3) the fire resistance difference of interior oversheath, packing material；4) inflammable, fire resistance difference；5) unreasonable structure；.
Content of the invention
The present invention is directed to the problems referred to above of the prior art, pressure fireproof power cable in one, its simple in construction, tool are provided
Have excellent fire-resistant, high flame-retardant property, heat resistance, energy-conserving and environment-protective.
The technical solution adopted in the present invention is as follows:
Middle pressure fireproof power cable, including several mutually stranded cable core, described cable core includes conductor and depends on from inside to outside
Secondary extrude in the internal shield outside conductor, insulating barrier, external shielding layer and metal screen layer；Described several cable core is wrapped in fire-resistant
In layer, there is filling in cable core gap；Oxygen barrier layer and outer jacket is extruded outside flame retardant coating；
The further technical scheme of the present invention is as follows:
Further, conductor is oxygenless copper material；
Further, internal shield and external shielding layer are external shield material in semiconductive；
Further, metal screen layer is copper strips or copper wire lapping structure；
Further, it is filled to glass fiber rope；
Further, flame retardant coating is Ceramic silicon rubber band；
Further, oxygen barrier layer and outer jacket are high flame resistance, low smoke halogen-free polyolefin material.
It is an advantage of the current invention that:
1st, cable core outer wrapped modified form ceramic fire prevention composite band, cable core gap is filled with modified form glass fiber rope, and cable is resistance to
Temperature highest ranking can reach 1300 DEG C, and burning under 1300 DEG C of flame conditions generates SiO2 ceramic insulation layer, can effectively stop fire
Flame spreads, flue gas content is little, light transmittance is high, Halogen, environmental protection, it is ensured that effective transmission of cable properly functioning guarantee dynamical system,
Reduce unnecessary economy and human loss；Ceramic silicon rubber material crusts under burning, and speed is fast and shell is hard closely knit, makes
Cable under long-term 900 degree of high temperature, and drench with rain, shake, impact under can keep normal power supply；
2nd, outer jacket, oxygen barrier layer all use and extrude novel high-flame-retardanthalogen-free halogen-free low-smoke and flame retardant fire-resistant polyolefin environment-friendly materials,
In the case of 350-1600 DEG C has flame, nonflame, do not melt, do not drip, do not fall off, do not result in spot fire, can effectively every
Exhausted flame, stops propagation of flame, has good fire insulation heat insulation thermal insulation oxygen barrier effect, makes cable not only have excellent fire-resistant, high
Flame-retarding characteristic, heat resistance, have more Halogen, low cigarette, environmental-protecting performance, can fully meet use and require.
Brief description
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the detailed description of the invention of the present invention is described.
As it is shown in figure 1, the present invention includes several mutually stranded cable core, described cable core includes by the conductor of copper conductor material
1 and extrude in the 2nd, the insulating barrier of the internal shield outside conductor 1 the 3rd, external shielding layer 4 and metal screen layer 5 from inside to outside successively, preferably
, internal shield 2 and external shielding layer 4 use external shield material in semiconductive, and metal screen layer 5 is copper strips or copper wire lapping structure,
The effect of metal screen layer 5 is to pass through capacitance current when properly functioning, when system is short-circuited, and leading to as short circuit current
Road, also functions to shield the effect of electric field simultaneously；Described several cable core is wrapped in flame retardant coating 7, and flame retardant coating 7 is Ceramic silicon rubber
Band, Ceramic silicon rubber material crusts under burning, and speed is fast and shell is hard closely knit so that cable under long-term 900 degree of high temperature,
And drench with rain, shake, impact under can keep normal power supply, there is a filling 6 in cable core gap, and filling 6 is glass fiber rope, heatproof highest ranking
Can reach 1300 DEG C, burning under 1300 DEG C of flame conditions generates SiO2 ceramic insulation layer, can effectively stop propagation of flame, flue gas
Content is little, light transmittance is high, Halogen, environmental protection；Oxygen barrier layer 8 and outer jacket 9 is extruded, it is preferable that outer jacket the 9th, oxygen barrier layer outside flame retardant coating 7
8 all employings extrude novel high-flame-retardanthalogen-free halogen-free low-smoke and flame retardant fire-resistant polyolefin environment-friendly materials, have flame, nonflame situation at 350-1600 DEG C
Under, do not melt, do not drip, do not fall off, do not result in spot fire, can effectively completely cut off flame, stop propagation of flame, have
Good fire insulation heat insulation thermal insulation oxygen barrier effect, makes cable not only have excellent fire-resistant, high flame-retardant property, heat resistance, has more
Halogen, low cigarette, environmental-protecting performance, can fully meet use and require；
The manufacture method of the present invention is as follows:
1) cathode copper melting, continuous casting and rolling goes out Φ 8.0mm cathode copper bar；
2) Φ 8.0mm cathode copper bar carries out wire drawing, the soft copper silk of Φ 2.58mm is made in annealing；
3) the soft copper silk of 14 Φ 2.58mm carrying out synnema stranded, stranded external diameter is the conductor 1 of the 95mm2 of 11.5mm；
4) conductor 1 is three-layer co-extruded through internal shield the 2nd, insulating barrier 3 and external shielding layer 4, and the inside and outside shielding thickness of core is
0.7mm, the thickness of insulating barrier 3 is 4.5mm, and outer insulation diameter is 23.3m.
5) the outer metallic shield 5 of all wrapped copper strips in every insulated wire cores, copper strips thickness is 0.1mm；
6) 3 core strandings, overlapping wrapped pottery fire prevention composite band outside glass fiber rope, core is filled in cable core gap, resistance to
Fire bed 7 gross thickness is not less than 6.0mm, stranding wrapped external diameter 66.1mm；
7) becoming the outer extruded ceramic LSOH anti-flaming fire-resistant polyolefin oxygen barrier layer 8 of cable core, thickness is 3.5mm；
8) extruding high-flame-retardanthalogen-free halogen-free low-smoke and flame retardant fire-resistant polyolefin outer jacket 9 outside oxygen barrier layer 8, covering thickness is 3.5mm.
Above description is explanation of the invention, is not the restriction to invention, and limited range of the present invention sees right
Require, within protection scope of the present invention, any type of modification can be made.
Claims (8)
1. in, press fireproof power cable, it is characterised in that: including several mutually stranded cable core, described cable core includes conductor (1)
And extrude successively from inside to outside in the outside internal shield (2) of conductor (1), insulating barrier (3), external shielding layer (4) and metallic shield
Layer (5)；Described several cable core is wrapped in flame retardant coating (7), and there is filling (6) in cable core gap；Flame retardant coating extrudes oxygen barrier layer outside (7)
And outer jacket (9) (8).
2. middle pressure fireproof power cable as claimed in claim 1, it is characterised in that: conductor (1) is oxygenless copper material.
3. middle pressure fireproof power cable as claimed in claim 1, it is characterised in that: internal shield (2) and external shielding layer (4) are
External shield material in semiconductive.
4. middle pressure fireproof power cable as claimed in claim 1, it is characterised in that: metal screen layer (5) is copper strips or copper wire
Lapping structure.
5. middle pressure fireproof power cable as claimed in claim 1, it is characterised in that: filling (6) is glass fiber rope.
6. middle pressure fireproof power cable as claimed in claim 1, it is characterised in that: flame retardant coating (7) is Ceramic silicon rubber band.
7. middle pressure fireproof power cable as claimed in claim 1, it is characterised in that: outer jacket (9) is the low cigarette of high-flame-retardanthalogen-free halogen-free
Flame-retardant polyolefin jacket material.
8. middle pressure fireproof power cable as claimed in claim 1, it is characterised in that: oxygen barrier layer (8) is high flame resistance, low smoke Halogen
Polyolefine material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610749996.5A CN106158133A (en) | 2016-08-29 | 2016-08-29 | Middle pressure fireproof power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610749996.5A CN106158133A (en) | 2016-08-29 | 2016-08-29 | Middle pressure fireproof power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106158133A true CN106158133A (en) | 2016-11-23 |
Family
ID=57343805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610749996.5A Pending CN106158133A (en) | 2016-08-29 | 2016-08-29 | Middle pressure fireproof power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106158133A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494009A (en) * | 2018-12-27 | 2019-03-19 | 上海胜华电气股份有限公司 | It is a kind of intelligence minerals in pressure fire prevention from monitoring cable |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394121A (en) * | 2011-10-25 | 2012-03-28 | 四川鑫电电缆有限公司 | Medium-voltage fire-resistant cable |
| CN202796224U (en) * | 2012-08-24 | 2013-03-13 | 安徽华星电缆集团有限公司 | Medium-voltage fire-proof power cable |
| CN104810094A (en) * | 2015-04-09 | 2015-07-29 | 西部电缆有限公司 | Crosslinked polyethylene insulating and refractory armored cable with rated voltage of 10 KV and manufacturing method thereof |
| CN205028704U (en) * | 2015-08-26 | 2016-02-10 | 安徽电缆股份有限公司 | Novel pottery nuclear power station is with fire -resistant silicon rubber medium voltage cable |
-
2016
- 2016-08-29 CN CN201610749996.5A patent/CN106158133A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394121A (en) * | 2011-10-25 | 2012-03-28 | 四川鑫电电缆有限公司 | Medium-voltage fire-resistant cable |
| CN202796224U (en) * | 2012-08-24 | 2013-03-13 | 安徽华星电缆集团有限公司 | Medium-voltage fire-proof power cable |
| CN104810094A (en) * | 2015-04-09 | 2015-07-29 | 西部电缆有限公司 | Crosslinked polyethylene insulating and refractory armored cable with rated voltage of 10 KV and manufacturing method thereof |
| CN205028704U (en) * | 2015-08-26 | 2016-02-10 | 安徽电缆股份有限公司 | Novel pottery nuclear power station is with fire -resistant silicon rubber medium voltage cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494009A (en) * | 2018-12-27 | 2019-03-19 | 上海胜华电气股份有限公司 | It is a kind of intelligence minerals in pressure fire prevention from monitoring cable |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161123 |
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| WD01 | Invention patent application deemed withdrawn after publication |