CN203521025U - Middle voltage fireproof cable - Google Patents
Middle voltage fireproof cable Download PDFInfo
- Publication number
- CN203521025U CN203521025U CN201320651682.3U CN201320651682U CN203521025U CN 203521025 U CN203521025 U CN 203521025U CN 201320651682 U CN201320651682 U CN 201320651682U CN 203521025 U CN203521025 U CN 203521025U
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- insulated wire
- wire cores
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The utility model relates to a middle voltage fireproof cable. The middle voltage fireproof cable is characterized by comprising an insulation wire core, wherein the insulation wire core comprises a copper conductor, and a conductor shielding layer, an insulation layer and an insulation shielding layer which are sequentially extruded outside the copper conductor in a three-layer extrusion mode, and a metal shielding layer wrapped outside the insulation shielding layer, the insulation wire core is externally wrapped by an isolation layer, a thermal isolation layer prepared by an inorganic hydroxide material, a flame retardation glass fiber wrapping layer, a fireproof layer, a flame retardation glass fiber wrapping layer, a waterproof layer, an armor layer and an outer sheath which is prepared by employing a low-smoke halogen-free polyolefin material.
Description
Technical field
The utility model relates to a kind of middle pressure fire-resisting cable, belongs to power cable technical field.
Background technology
Along with the development of China's economic, the voltage of incity, city electric power system raises gradually.If high-rise, super-huge high-rise adopts 0.6/1 kV low-voltage distribution, its cable consumption and workload are huge, and the cable laying in building is too much, excessive, also can affect the operation of circuit, brings larger safety problem.For solving an actual power supply difficult problem, the building such as high-rise, super-huge high level starts to adopt medium-pressure electricity supply (6 kV～35 kV).At present, in some big and medium-sized cities, explicitly called for public place building, high-rise, super-huge building need adopt environmental-protection flame-retardant, fire-resisting cable, to prevent when the breaking out of fire, supply line's normal power supply within the predetermined time can be ensured, and toxic and harmful can be do not produced because of burning.Therefore, need a kind of environment-friendly high fire-retardant fire safe type midium voltage cable of research and development.
Chinese patent CN101236801A discloses a kind of fire-resisting cable, the external protection that the refractory insulating layer that it forms at conductor outer cladding 0.05 mm～1.00 mm silica compound and refractory fibre braid form.It is fire-resistant that it is suitable for low pressure.
Chinese patent " is pressed fire-resisting cable in three cores " (CN201975130U; open day on September 14th, 2011); comprise three cable cores; cable core comprises again the insulating barrier outside conductor thread core, conductor thread core; cable core is provided with restrictive coating outward; between cable core and restrictive coating, be provided with one deck ceramic silastic material layer, ceramic silastic material layer forms a refractory protection.
Chinese patent " a kind of middle pressure fire-resisting cable " (CN202076045U, open day on December 14th, 2011), comprise conductor, on conductor, extrude successively conductor shield, insulating barrier, insulation screen, insulation screen is provided with metal screen layer, thermal insulation layer, flame retardant coating, oversheath outward successively, and flame retardant coating is the combination flame retardant coating consisting of the interior flame retardant coating of ceramic silicon rubber and the polyolefinic outer flame retardant coating of crust type.
During Chinese patent CN 101169993B is open, press fire-resisting cable, it is at insulated wire cores peripheral hardware flame retardant coating and the oversheath of middle laminated structure.Flame retardant coating be inner side refractory inorganic fiber thermal insulation layer and outside soft type thermo-setting elastomer: ceramic silicon rubber.Outside it, soft type thermo-setting elastomer: the organic matter of ceramic silicon rubber and moisture burn mistake can become similar ceramic-like solid refractory insulating layer.
Middle pressure fire-resisting cable described in above-mentioned three patents adopts the refractory protection of ceramic silicone rubber kinds mostly; it is under aerobic combustion case; refractory protection can harden; but its hardening strength is lower; protectiveness to inner insulated wire cores is inadequate; and complex manufacturing, more difficult to the performance uniformity of ceramic silicone rubber kinds material and stability control.
Summary of the invention
The purpose of this utility model for above-mentioned deficiency of the prior art, provide just a kind of can be not fragile under the burning situation of aerobic, high temperature, middle pressure fire-resisting cable that fire resistance is good.
The purpose of this utility model can realize by following technique measures:
Middle pressure fire-resisting cable of the present utility model comprises insulated wire cores, and described insulated wire cores is by copper conductor, with three layers, to extrude that mode is extruded in conductor shield, insulating barrier, the insulation screen outside copper conductor successively and the metal screen layer that is wrapped in outside insulation screen forms; Oversheath prepared by thermal insulation layer, combustion-proof glass fiber belting layer, flame retardant coating, combustion-proof glass fiber belting layer, watertight composition, armour, the employing low-smoke halogen-free polyolefin material that be enclosed with successively separator outward in insulated wire cores, adopts inorganic hydroxide material to prepare.
Insulated wire cores described in the utility model can be arranged to a root architecture as required, also can be arranged to three root architectures.
Thermal insulation layer described in the utility model and flame retardant coating are to be all prepared from by inorganic material.
Described thermal insulation layer is that the raw material by following weight percentage is prepared from, wherein aluminium hydroxide micro powder 87-91%, silicon powder 5-8%, prodan 3-5%, waterglass 1-3%, and above-mentioned raw materials percentage by weight sum is 100%, through mold pressing, extrude and be prepared from.
Described flame retardant coating be by clay fire clay through mold pressing, extrude and be prepared from.
Described metal screen layer is the metal screen layer that metal copper strips forms; Described armour is wire armoring or steel-tape armouring or non magnetic steel wire (or steel band) armouring; Described watertight composition is crosslinked polyethylene film.
The utlity model has following beneficial effect:
(1) flame retardant coating, under burning condition, expands while meeting high temperature, changes ceramic structure into.The pre-thermal decomposition of thermal insulation layer, becomes aluminium oxide, discharges mass crystallization water simultaneously, and the generation of steam has reduced the temperature of cable, and the porousness air pocket forming has thus intercepted internal thermal radiation and the heat conduction of external flame.Flame retardant coating, thermal insulation layer refractory heat-insulating performance are good, have improved the fire resistance of middle pressure fire-resisting cable, under combustion case, can guarantee a period of time ground normal power supply.
(2) water layer of setting up defences between flame retardant coating and oversheath, puies forward the water resistance of high pressure fire-resisting cable.Under the acting in conjunction of thermal insulation layer, flame retardant coating, fire-retardant glass fiber belt and oversheath, middle pressure fire-resisting cable reaches the fire-retardant requirement of category-A.
(3) metal screen layer that adopts metal copper strips to form is put forward the shielding properties of high pressure fire-resisting cable.
(4) oversheath that employing polyolefine material forms is long service life under normal circumstances, and it is under cable fire condition, and low cigarette, Halogen also improve fire resistance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment mono-.
Fig. 2 is the structural representation of the utility model embodiment bis-.
Sequence number in figure: 1. conductor, 2. conductor shield, 3. insulating barrier, 4. insulation screen, 5. metal screen layer, 6. separator, 7. thermal insulation layer, 8. combustion-proof glass fiber belting layer, 9. flame retardant coating, 10. combustion-proof glass fiber belting layer, 11. watertight compositions, 12. armours, 13. oversheaths.
Embodiment
The utility model is described in further detail below with reference to embodiment (accompanying drawing).
As shown in Figure 1, middle pressure fire-resisting cable of the present utility model comprises the cable core consisting of an insulated wire cores that is positioned at cable centre, described insulated wire cores is by the conductor 1 that adopts copper conductor material to be prepared from, with three layers, to extrude that mode extrudes conductor shield 2, insulating barrier 3, insulation screen 4 successively and the metal screen layer 5 that is arranged on outside insulation screen 4 forms, the preferred copper strips screen of described metal screen layer 5; In insulated wire cores, be enclosed with successively separator 6, thermal insulation layer 7, combustion-proof glass fiber belting layer 8, flame retardant coating 9, combustion-proof glass fiber belting layer 10, watertight composition 11, armour 12, oversheath 13 outward; Described oversheath 13 adopts low-smoke halogen-free polyolefin material to be prepared from.
Thermal insulation layer described in the utility model and flame retardant coating are to be all prepared from by inorganic material, put forward fire resistance, heat-resisting quantity, anti-flammability and the thermal insulation of high pressure fire-resisting cable.
Described thermal insulation layer is that the raw material by following weight percentage is prepared from, wherein aluminium hydroxide micro powder 87-91%, silicon powder 5-8%, prodan 3-5%, waterglass 1-3%, and above-mentioned raw materials percentage by weight sum is 100%, through mold pressing, extrude and be prepared from.
Described flame retardant coating be by clay fire clay through mold pressing, extrude and be prepared from.
Described metal screen layer is the metal screen layer that metal copper strips forms; Described armour is non magnetic steel wire armouring or non-magnetic steel band armored; Described watertight composition is crosslinked polyethylene film.
Described flame retardant coating 9, under burning condition, changes ceramic structure into while meeting high temperature, reaches fire-resistant, heat insulation effect, under combustion case, can guarantee a period of time ground normal power supply.
The setting of described combustion-proof glass fiber belting layer 8,10 can further improve fire resistance, heat-resisting quantity, anti-flammability and the thermal insulation of middle pressure fire-resisting cable, under the acting in conjunction of thermal insulation layer 7, flame retardant coating 9, combustion-proof glass fiber belting layer 8,10 and oversheath 13, middle pressure fire-resisting cable reaches the fire-retardant requirement of category-A.
Embodiment 2
As shown in Figure 2, the present embodiment is different from embodiment 1 part and is to be provided with three insulated wire cores in the middle of cable, three insulated wire cores form cable core, at cable core, are enclosed with successively separator 6, thermal insulation layer 7, combustion-proof glass fiber belting layer 8, flame retardant coating 9, combustion-proof glass fiber belting layer 10, watertight composition 11, armour 12, oversheath 13 outward.Described armour is wire armoring or steel-tape armouring.
Claims (3)
1. press fire-resisting cable in one kind, it is characterized in that: described cable comprises insulated wire cores, described insulated wire cores is by copper conductor, with three layers, to extrude that mode is extruded in conductor shield, insulating barrier, the insulation screen outside copper conductor successively and the metal screen layer that is wrapped in outside insulation screen forms; Oversheath prepared by thermal insulation layer, combustion-proof glass fiber belting layer, flame retardant coating, combustion-proof glass fiber belting layer, watertight composition, armour, the employing low-smoke halogen-free polyolefin material that be enclosed with successively separator outward in insulated wire cores, adopts inorganic hydroxide material to prepare.
2. middle pressure fire-resisting cable according to claim 1, is characterized in that: described insulated wire cores is a root architecture.
3. middle pressure fire-resisting cable according to claim 1, is characterized in that: described insulated wire cores is three root architectures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320651682.3U CN203521025U (en) | 2013-10-22 | 2013-10-22 | Middle voltage fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320651682.3U CN203521025U (en) | 2013-10-22 | 2013-10-22 | Middle voltage fireproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203521025U true CN203521025U (en) | 2014-04-02 |
Family
ID=50379917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320651682.3U Expired - Fee Related CN203521025U (en) | 2013-10-22 | 2013-10-22 | Middle voltage fireproof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203521025U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106532300A (en) * | 2016-11-30 | 2017-03-22 | 金湖金诚电子科技有限公司 | Waterproof terminal wire harness for HDMI high definition connection wire |
| CN106935326A (en) * | 2017-03-30 | 2017-07-07 | 浙江万马股份有限公司 | Multicore cable is pressed in fire prevention |
| CN107785111A (en) * | 2017-09-30 | 2018-03-09 | 方涌东 | A kind of environment-friendly cable |
| CN114005590A (en) * | 2021-11-03 | 2022-02-01 | 安徽蒙特尔电缆集团有限公司 | Comprehensive protection B1-level cable for rail transit |
-
2013
- 2013-10-22 CN CN201320651682.3U patent/CN203521025U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106532300A (en) * | 2016-11-30 | 2017-03-22 | 金湖金诚电子科技有限公司 | Waterproof terminal wire harness for HDMI high definition connection wire |
| CN106935326A (en) * | 2017-03-30 | 2017-07-07 | 浙江万马股份有限公司 | Multicore cable is pressed in fire prevention |
| CN107785111A (en) * | 2017-09-30 | 2018-03-09 | 方涌东 | A kind of environment-friendly cable |
| CN114005590A (en) * | 2021-11-03 | 2022-02-01 | 安徽蒙特尔电缆集团有限公司 | Comprehensive protection B1-level cable for rail transit |
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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: 20140402 Termination date: 20161022 |