CN103077773A - Rail traffic environmental-protection fireproof cable and preparation method thereof - Google Patents
Rail traffic environmental-protection fireproof cable and preparation method thereof Download PDFInfo
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- CN103077773A CN103077773A CN 201110329384 CN201110329384A CN103077773A CN 103077773 A CN103077773 A CN 103077773A CN 201110329384 CN201110329384 CN 201110329384 CN 201110329384 A CN201110329384 A CN 201110329384A CN 103077773 A CN103077773 A CN 103077773A
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Abstract
The invention relates to a rail traffic environmental-protection fireproof cable, which mainly comprises a conductor and an insulation layer arranged outside the conductor and is characterized in that a mica layer is arranged between the conductor and the insulation layer; and an aluminum strip and an outer protective layer are arranged outside the insulation layer. When the rail traffic environmental-protection fireproof cable is used, the mica layer is arranged between the conductor and the insulation layer of the cable; the aluminum strip and the outer protective layer are arranged outside the insulation layer; mica tapes are wrapped outside the conductor; the insulation layer is made of water-resistant irradiation crosslinked polyethylene materials; the outer protective layer is made of temperature-resisting waterproof anti-aging environmental-protection material LSZH (low smoke zero halogen); and the insulation layer is in a multi-layer composite water-blocking isolated layer structure wrapped by water-blocking tapes and longitudinally wrapped by the aluminum strips. The water-resistant tree-resistant, water-blocking and electrical properties of the cable are enhanced; meanwhile, the cable has environmental-protection, weather-proof and antiflaming properties; the physical and mechanical contrast ratio is greatly improved; and the A grade antiflaming requirements specified in GA306.1-2008 can be completely achieved.
Description
Technical field
The present invention relates to the technical field of cable, specifically a kind of rail cross ring is protected fireproof cable and preparation method thereof.
Background technology
Nowadays along with the development of science and technology, the transmission network of various electric power, information is very extensive, the purposes of cable is greatly expansion also, be widely used in the places such as harbour, harbour, hydroelectric station, reservoir, tunnel, the place that cable is settled is also very complicated, usually work in a humid environment, this is just to waterproof, the fire protection requirement height very of cable.
The fire-proof insulation cable that adopts on the market, the general rigidity mineral insulated cable that adopts, this kind cable has following shortcoming: 1. drawing copper tubes technique is so that single continuous length is limited, need constantly to use joint in the process of installing, increase material and cost of labor, and need butt joint place electric property to do special processing.2. magnesium oxide powder serves as insulating barrier, easily produces the became uneven phenomenon, and technique slightly has mistake just can puncture, and rated voltage is up to 450/750V.3. directly be subjected to fiery temperature in case be by fiery copper pipe shell---950 ℃+50 ℃ (plastic sheath moment scaling loss), the copper conductor heart yearn hinders following temperature rising and increases, so rigidity mineral insulated cable droop loss is large in the fire.4. metallic sheath adopts segmentation drawing process, heavy in section 400mm
2Single magnesium oxide has pollution to environment no longer than 60 meters, and cost is high, and efficient is difficult to improve.
Existing cable generally is made of conductor, insulation, shielding and sheath, and the water resistance of this cable is very weak, and useful life is short, and in use, need to regularly overhaul, and so not only waste of manpower increases cost, also has simultaneously very large potential safety hazard.The complex manufacturing technology of while existing cable, cost is higher, and also there is the not good problem of water resistance in the cable of making.
Summary of the invention
The object of the present invention is to provide a kind of improved rail cross ring to protect fireproof cable, it can overcome, and cable blocks water in the prior art, fire resistance is poor, complex manufacturing technology, some shortcomings that cost is higher.
To achieve these goals, technical scheme of the present invention is: a kind of rail cross ring is protected fireproof cable, it mainly comprises conductor and is located at the outer insulating barrier of conductor, it is characterized in that: be provided with mica layer between conductor and the insulating barrier, insulating barrier is provided with aluminium strip and outer jacket outward, is equipped with water blocking layer between insulating barrier and aluminium strip, aluminium strip and the outer jacket.
A kind of rail cross ring is protected the preparation method of fireproof cable, it is characterized in that: described preparation method comprises the steps: a, copper (or aluminium) single line is put into pipe twisting machine carries out the stranded conductor of making, at the wrapped mica tape of conductive surface; B, conductor is put into plastic extruding machine, at mica layer surface extruded insulation layer, in the extruded insulation layer, between insulating barrier and mica layer, fill material water-proof material; C, conductor is put into cabler, form water blocking layer at the wrapped waterstop of surface of insulating layer first, secondly at the wrapped aluminium strip of water blocking layer surface longitudinal, last wrapped one deck waterstop again on the aluminium strip surface; D, conductor is put into extruder, extrude outer jacket on the waterstop surface; After e, the examination and test of products, the packing warehouse-in.
During use, be provided with mica layer between the conductor of cable of the present invention and the insulating barrier, insulating barrier is provided with aluminium strip and outer jacket outward.Conductor is outer by Mica tape, and insulating barrier adopts anti-water IXPE material oversheath to adopt the water-fast ageing-resistant environment-friendly materials LSZH of heatproof, and insulating barrier adopts the wrapped and vertical bag of the aluminium strip MULTILAYER COMPOSITE of the waterstop insulation layer structure that blocks water outward.More in the extruded insulation layer, between insulating barrier and mica layer, fill material water-proof material when making cable, improved the block-water performance of cable, aluminium strip adopts longitudinal lapping, prevent that cable from radially intaking, guaranteed the integrality of cable waterproof structure, the manufacture craft of whole cable is simple simultaneously, provide cost savings, cable after making is set at anti-water, is blocked water, all greatly strengthen on the electrical property, simultaneously environmental protection weather-resistance flame-retardant, physical and mechanical properties is greatly improved, and reaches the fire-retardant requirement of GA306.1-2008 regulation A level fully.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
The present invention mainly comprises conductor and is located at the outer insulating barrier of conductor that its difference with the prior art is: be provided with mica layer between conductor and the insulating barrier, insulating barrier is provided with aluminium strip and outer jacket outward, is equipped with water blocking layer between insulating barrier and aluminium strip, aluminium strip and the outer jacket.Water blocking layer adopts that waterstop is wrapped to form the thickness 0.1-0.3mm of water blocking layer; Outer jacket adopts low smoke and zero halogen protective cover material (LSZH) to make, and the thickness of outer jacket is 2.2-3.5mm.The thickness of mica layer is 0.3-0.8mm, and insulating barrier adopts crosslinked polyethylene (XLPE) to make, and the thickness of insulating barrier is 1.0-1.8mm.
Described preparation method comprises the steps: a, copper (or aluminium) single line is put into pipe twisting machine carries out the stranded conductor of making, at the wrapped mica tape of conductive surface; B, conductor is put into plastic extruding machine, at mica layer surface extruded insulation layer, in the extruded insulation layer, between insulating barrier and mica layer, fill material water-proof material; C, conductor is put into cabler, form water blocking layer at the wrapped waterstop of surface of insulating layer first, secondly at the wrapped aluminium strip of water blocking layer surface longitudinal, last wrapped one deck waterstop again on the aluminium strip surface; D, conductor is put into extruder, extrude outer jacket on the waterstop surface; After e, the examination and test of products, the packing warehouse-in.In a step, mica tape needs wrapped three layers, and three layers gross thickness is 0.3-0.8mm, and the rate of putting up when wrapped is more than or equal to 15%.In the b step, insulating barrier adopts crosslinked polyethylene (XLPE) to make, and the thickness of insulating barrier is 1.0-1.8mm; Material water-proof material adopts water blocking yarn or water-proofing powder.In the c step, when waterstop is wrapped around to being left-hand, the thickness 0.1-0.3mm of water blocking layer, 150mm
2Adopt a ply wrapped with lower section, Duplication is 10%～20%, 150mm
2And adopting two lamellar spacings wrapped with upper section, clearance rate is 50～60%; Aluminium strip adopts vertical packet mode wrapped, and the rate of putting up is 20%, and aluminium strip adopts the embossing machine embossing, and in the embossing height 0.5-0.9mmd step, outer jacket adopts low smoke and zero halogen protective cover material (LSZH) to make, and the thickness of outer jacket is 2.2-3.5mm.
Embodiment 1
The rail cross ring is protected the fireproof cable preparation method and is comprised the steps: at first, copper, aluminium single line are put into pipe twisting machine carry out the stranded conductor of making, the copper of conductor processed, aluminium single line surface should bright and clean, roundings, and greasy dirt, scuffing, burr etc. and the disproportionate any defective of good industrial goods must not be arranged.Core is stranded should evenly, closely must not to have the thigh of lacking, wire jumper, pine thigh etc., and the mechanical damages such as sharp edge, burr, projection must not be arranged.Without burr, sharp edge and the projection of greasy dirt, not damaged insulation or the single line of fracture.Wrapped mica tape when conductor is stranded, mica tape specification 25*0.17, wrapped three layers, three layers gross thickness is 0.3 mm, overlapping wrapped, the rate of putting up is not less than 15%.
Secondly, conductor is put into ￠ 90 plastic extruding machines, at mica layer surface extruded insulation layer, fill material water-proof material in the extruded insulation layer between insulating barrier and mica layer, material water-proof material adopts water blocking yarn, fills and wants evenly, can prevent that like this conductor from axially intaking, make product have complete block-water performance.Insulating barrier adopts the organosilane crosslinked polyethylene insulation material.The thickness of insulating barrier is 1.0mm, and insulating barrier should closely be extruded on the conductor, and peels off easily and do not damage conductor.The insulated wire cores take-up reel must smooth rule.The insulating barrier cross section is without the visible bubble of eyesight, trachoma etc. and the disproportionate any defective of good industrial goods.Insulating surface is smooth, and color and luster is even.The thinnest dot thickness of insulating barrier is not less than the 90%-0.1mm of nominal value.
Then, conductor is put into cabler, form water blocking layer at the wrapped waterstop of surface of insulating layer first, secondly at the wrapped aluminium strip of water blocking layer surface longitudinal, last wrapped one deck waterstop again on the aluminium strip surface, the width of waterstop is 25mm, when waterstop is wrapped around to being left-hand, the thickness 0.1mm of water blocking layer, 150mm
2Adopt a ply wrapped with lower section, Duplication is 10%～20%; Aluminium strip adopts vertical packet mode wrapped, and the rate of putting up is 20%, and the vertical bag of aluminium strip can prevent that cable from radially intaking, and makes the product waterproof construction complete, and aluminium strip adopts embossing machine embossing, embossing height 0.5mm simultaneously.
Then, conductor is put into extruder, extrude outer jacket on the waterstop surface, outer jacket adopts low-smoke halogen-free polyolefin protective cover material (LSZH) to make, and the thickness of outer jacket is 2.2mm.At last, after the examination and test of products, the packing warehouse-in.
Embodiment 2
The rail cross ring is protected the fireproof cable preparation method and is comprised the steps: at first, copper, aluminium single line are put into pipe twisting machine carry out the stranded conductor of making, the copper of conductor processed, aluminium single line surface should bright and clean, roundings, and greasy dirt, scuffing, burr etc. and the disproportionate any defective of good industrial goods must not be arranged.Without burr, sharp edge and the projection of greasy dirt, not damaged insulation or the single line of fracture.Wrapped mica tape when conductor is stranded, mica tape specification 35*0.17, wrapped three layers, three layers gross thickness is 0.8mm, overlapping wrapped, the rate of putting up is not less than 15%.
Secondly, conductor is put into ￠ 90 plastic extruding machines, at mica layer surface extruded insulation layer, fill material water-proof material in the extruded insulation layer between insulating barrier and mica layer, material water-proof material adopts water-proofing powder, fills and wants evenly, can prevent that like this conductor from axially intaking, make product have complete block-water performance.Insulating barrier adopts the organosilane crosslinked polyethylene insulation material.The thickness of insulating barrier is 1.8mm, and insulating barrier should closely be extruded on the conductor, and peels off easily and do not damage conductor.The insulated wire cores take-up reel must smooth rule.The insulating barrier cross section is without the visible bubble of eyesight, trachoma etc. and the disproportionate any defective of good industrial goods.Insulating surface is smooth, and color and luster is even.The thinnest dot thickness of insulating barrier is not less than the 90%-0.1mm of nominal value.
Then, conductor is put into ￠ 1250 cablers, form water blocking layer at the wrapped waterstop of surface of insulating layer first, secondly at the wrapped aluminium strip of water blocking layer surface longitudinal, last wrapped one deck waterstop again on the aluminium strip surface, the width of waterstop is 35mm, when waterstop is wrapped around to being left-hand, the thickness 0.3mm of water blocking layer, 150mm
2And adopting two lamellar spacings wrapped with upper section, clearance rate is 50～60%.Aluminium strip adopts vertical packet mode wrapped, and the rate of putting up is 20%, and the vertical bag of aluminium strip can prevent that cable from radially intaking, and makes the product waterproof construction complete, and aluminium strip adopts embossing machine embossing, embossing height 0.9mm simultaneously.
Then, conductor is put into ￠ 150 extruders extrude outer jacket on the waterstop surface, the operating temperature range of extruder is 140-175 ℃, and outer jacket adopts low-smoke halogen-free polyolefin protective cover material (LSZH) to make, and the thickness of outer jacket is 3.5mm.Sheath should closely be extruded on the cable core, and peels off easily and do not damage internal layer, and jacket surface is smooth, and color and luster is even.Sheath extrudes in the technique, and lower limit, median and higher limit are control range, tries one's best during production THICKNESS CONTROL between lower limit and median, and the thinnest point of jacket thickness is the value that must guarantee.Be as the criterion with thickness during measurement parameter, outside diameter of cable control range is only for referencial use.At last, after the examination and test of products, the packing warehouse-in.The anti-water of cable of the present invention is set, is blocked water, electrical property strengthens, simultaneously environmental protection weather-resistance flame-retardant, and the physical mechanical contrast is greatly improved, and reaches the fire-retardant requirement of GA306.1-2008 regulation A level fully.
Embodiment 3
A kind of rail cross ring is protected fireproof cable, it mainly comprises conductor and is located at the outer insulating barrier of conductor, its difference with the prior art is: be provided with mica layer between conductor and the insulating barrier, insulating barrier is provided with aluminium strip and outer jacket outward, is equipped with water blocking layer between insulating barrier and aluminium strip, aluminium strip and the outer jacket.Water blocking layer adopts that waterstop is wrapped to form the thickness 0.2mm of water blocking layer; Outer jacket adopts low smoke and zero halogen protective cover material (LSZH) to make, and the thickness of outer jacket is 3mm.The thickness of mica layer is 0.5mm, and insulating barrier adopts crosslinked polyethylene (XLPE) to make, and the thickness of insulating barrier is 1.3mm.
The rail cross ring is protected the fireproof cable preparation method and is comprised the steps: at first, copper, aluminium single line are put into pipe twisting machine carry out the stranded conductor of making, the copper of conductor processed, aluminium single line surface should bright and clean, roundings, and greasy dirt, scuffing, burr etc. and the disproportionate any defective of good industrial goods must not be arranged.Without burr, sharp edge and the projection of greasy dirt, not damaged insulation or the single line of fracture.Wrapped mica tape when conductor is stranded, mica tape specification 35*0.17, wrapped three layers, three layers gross thickness is 0.5mm, overlapping wrapped, the rate of putting up is not less than 15%.
Secondly, conductor is put into ￠ 90 plastic extruding machines, at mica layer surface extruded insulation layer, fill material water-proof material in the extruded insulation layer between insulating barrier and mica layer, material water-proof material adopts water-proofing powder, fills and wants evenly, can prevent that like this conductor from axially intaking, make product have complete block-water performance.Insulating barrier adopts the organosilane crosslinked polyethylene insulation material.The thickness of insulating barrier is 1.3mm, and insulating barrier should closely be extruded on the conductor, and peels off easily and do not damage conductor.The insulated wire cores take-up reel must smooth rule.The insulating barrier cross section is without the visible bubble of eyesight, trachoma etc. and the disproportionate any defective of good industrial goods.Insulating surface is smooth, and color and luster is even.The thinnest dot thickness of insulating barrier is not less than the 90%-0.1mm of nominal value.
Then, conductor is put into ￠ 1600 cablers, form water blocking layer at the wrapped waterstop of surface of insulating layer first, secondly at the wrapped aluminium strip of water blocking layer surface longitudinal, last wrapped one deck waterstop again on the aluminium strip surface, the width of waterstop is 35mm, when waterstop is wrapped around to being left-hand, the thickness 0.2mm of water blocking layer, 150mm
2And adopting two lamellar spacings wrapped with upper section, clearance rate is 50～60%.Aluminium strip adopts vertical packet mode wrapped, and the rate of putting up is 20%, and the vertical bag of aluminium strip can prevent that cable from radially intaking, and makes the product waterproof construction complete, and aluminium strip adopts embossing machine embossing, embossing height 0.7mm simultaneously.
Then, conductor is put into ￠ 150 extruders extrude outer jacket on the waterstop surface, the operating temperature range of extruder is 140-175 ℃, and outer jacket adopts low-smoke halogen-free polyolefin protective cover material (LSZH) to make, and the thickness of outer jacket is 3mm.Sheath should closely be extruded on the cable core, and peels off easily and do not damage internal layer, and jacket surface is smooth, and color and luster is even.Sheath extrudes in the technique, and lower limit, median and higher limit are control range, tries one's best during production THICKNESS CONTROL between lower limit and median, and the thinnest point of jacket thickness is the value that must guarantee.Be as the criterion with thickness during measurement parameter, outside diameter of cable control range is only for referencial use.At last, after the examination and test of products, the packing warehouse-in.The anti-water of cable of the present invention is set, is blocked water, electrical property strengthens, simultaneously environmental protection weather-resistance flame-retardant, and the physical mechanical contrast is greatly improved, and reaches the fire-retardant requirement of GA306.1-2008 regulation A level fully.
Claims (8)
1. a rail cross ring is protected fireproof cable, it mainly comprises conductor and is located at the outer insulating barrier of conductor, it is characterized in that: be provided with mica layer between conductor and the insulating barrier, insulating barrier is provided with aluminium strip and outer jacket outward, is equipped with water blocking layer between insulating barrier and aluminium strip, aluminium strip and the outer jacket.
2. a kind of rail cross ring according to claim 1 is protected fireproof cable, it is characterized in that: water blocking layer adopts that waterstop is wrapped to form the thickness 0.1-0.3mm of water blocking layer; Outer jacket adopts the low smoke and zero halogen protective cover material to make, and the thickness of outer jacket is 2.2-3.5mm.
3. a kind of rail cross ring according to claim 1 is protected fireproof cable, and it is characterized in that: the thickness of mica layer is 0.3-0.8mm, and insulating barrier adopts crosslinked polyethylene to make, and the thickness of insulating barrier is 1.0-1.8mm.
4. a kind of rail cross ring according to claim 1 is protected the preparation method of fireproof cable, it is characterized in that: described preparation method comprises the steps: a, copper (or aluminium) single line is put into pipe twisting machine carries out the stranded conductor of making, at the wrapped mica tape of conductive surface; B, conductor is put into plastic extruding machine, at mica layer surface extruded insulation layer, in the extruded insulation layer, between insulating barrier and mica layer, fill material water-proof material; C, conductor is put into cabler, form water blocking layer at the wrapped waterstop of surface of insulating layer first, secondly at the wrapped aluminium strip of water blocking layer surface longitudinal, last wrapped one deck waterstop again on the aluminium strip surface; D, conductor is put into extruder, extrude outer jacket on the waterstop surface; After e, the examination and test of products, the packing warehouse-in.
5. a kind of rail cross ring according to claim 4 is protected the preparation method of fireproof cable, it is characterized in that: in a step, mica tape needs wrapped three layers, and three layers gross thickness is 0.3-0.8mm, and the rate of putting up when wrapped is more than or equal to 15%.
6. a kind of rail cross ring according to claim 4 is protected the preparation method of fireproof cable, it is characterized in that: in the b step, insulating barrier adopts crosslinked polyethylene to make, and the thickness of insulating barrier is 1.0-1.8mm; Material water-proof material adopts water blocking yarn or water-proofing powder.
7. a kind of rail cross ring according to claim 4 is protected the preparation method of fireproof cable, it is characterized in that: in the c step, when waterstop is wrapped around to being left-hand, the thickness 0.1-0.3mm of water blocking layer, 150mm
2Adopt a ply wrapped with lower section, Duplication is 10%～20%, 150mm
2And adopting two lamellar spacings wrapped with upper section, clearance rate is 50～60%; Aluminium strip adopts vertical packet mode wrapped, and the rate of putting up is 20%, and aluminium strip adopts embossing machine embossing, embossing height 0.5-0.9mm.
8. a kind of rail cross ring according to claim 4 is protected the preparation method of fireproof cable, it is characterized in that: in the d step, outer jacket adopts the low smoke and zero halogen protective cover material to make, and the thickness of outer jacket is 2.2-3.5mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110329384 CN103077773A (en) | 2011-10-26 | 2011-10-26 | Rail traffic environmental-protection fireproof cable and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110329384 CN103077773A (en) | 2011-10-26 | 2011-10-26 | Rail traffic environmental-protection fireproof cable and preparation method thereof |
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| CN103077773A true CN103077773A (en) | 2013-05-01 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103268786A (en) * | 2013-06-17 | 2013-08-28 | 沈阳天荣电缆材料有限公司 | Longitudinal-water-blocking aluminum sheath crosslinked polyethylene cable |
| CN103794286A (en) * | 2014-02-21 | 2014-05-14 | 无锡市华美电缆有限公司 | Waterproof rubber sleeve cable |
| CN105161213A (en) * | 2015-09-28 | 2015-12-16 | 安徽复兴电缆集团有限公司 | High-performance waterproof and fireproof composite power cable and manufacturing method thereof |
| CN115083675A (en) * | 2022-07-22 | 2022-09-20 | 宇盛电气有限公司 | Cross-linked polyethylene insulated alternating-current underwater cable and preparation process thereof |
| CN116487119A (en) * | 2023-04-08 | 2023-07-25 | 山东中船线缆股份有限公司 | Safe fire-proof cable for port returning and manufacturing method thereof |
-
2011
- 2011-10-26 CN CN 201110329384 patent/CN103077773A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103268786A (en) * | 2013-06-17 | 2013-08-28 | 沈阳天荣电缆材料有限公司 | Longitudinal-water-blocking aluminum sheath crosslinked polyethylene cable |
| CN103794286A (en) * | 2014-02-21 | 2014-05-14 | 无锡市华美电缆有限公司 | Waterproof rubber sleeve cable |
| CN105161213A (en) * | 2015-09-28 | 2015-12-16 | 安徽复兴电缆集团有限公司 | High-performance waterproof and fireproof composite power cable and manufacturing method thereof |
| CN115083675A (en) * | 2022-07-22 | 2022-09-20 | 宇盛电气有限公司 | Cross-linked polyethylene insulated alternating-current underwater cable and preparation process thereof |
| CN116487119A (en) * | 2023-04-08 | 2023-07-25 | 山东中船线缆股份有限公司 | Safe fire-proof cable for port returning and manufacturing method thereof |
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Application publication date: 20130501 |