CN105976913A - Improved-type medium-voltage fireproof power cable - Google Patents

Improved-type medium-voltage fireproof power cable Download PDF

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Publication number
CN105976913A
CN105976913A CN201610498233.8A CN201610498233A CN105976913A CN 105976913 A CN105976913 A CN 105976913A CN 201610498233 A CN201610498233 A CN 201610498233A CN 105976913 A CN105976913 A CN 105976913A
Authority
CN
China
Prior art keywords
thickness
cable
layer
cable core
low
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
Application number
CN201610498233.8A
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Chinese (zh)
Inventor
杨洪新
高宇
王佳伟
王军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Hongfeng Cable Group Co Ltd
Original Assignee
Jiangsu Hongfeng Cable Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu Hongfeng Cable Group Co Ltd filed Critical Jiangsu Hongfeng Cable Group Co Ltd
Priority to CN201610498233.8A priority Critical patent/CN105976913A/en
Publication of CN105976913A publication Critical patent/CN105976913A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29Protection against damage caused by extremes of temperature or by flame
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29Protection against damage caused by extremes of temperature or by flame
    • H01B7/295Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00Power cables
    • H01B9/02Power cables with screens or conductive layers, e.g. for avoiding large potential gradients

Abstract

The invention discloses an improved-type medium-voltage fireproof power cable, and the cable comprises a cable core. The cable is characterized in that the cable core is formed by the twisting of a plurality of insulating wire cores; a gap of the cable core is provided with an inorganic hydrous filling layer; the cable core is wrapped by a first low-smoke halogen-free flame-retardant glass fiber belt; the first low-smoke halogen-free flame-retardant glass fiber belt is wrapped by a ceramic silicone rubber isolating sleeve; the ceramic silicone rubber isolating sleeve is wrapped by a second low-smoke halogen-free flame-retardant glass fiber belt in an extruding manner; the exterior of the low-smoke halogen-free flame-retardant glass fiber belt is provided with a zinc-plated steel tape armored layer in a braided manner; and the outermost layer of the cable is provided with a low-smoke halogen-free flame-retardant external sheath or an aluminum sheath in an extruding manner. The cable can meet the requirements of electric performances and fireproof performances at the same time, is more reasonable in structure, is simple in manufacture technology, is reasonable in price, is long in service life, is high in safety, and is mainly used for urban buildings and common places where fire prevention is needed.

Description

A kind of modified model presses fireproof power cable
Technical field
The present invention relates to field of cables, specifically refer to a kind of modified model presses fireproof power cable.
Background technology
Existing fire-resisting cable technology is widely applied on low-voltage cable, electric pressure is 1kV and following, the construction of cable is to use fire-resistant isinglass belt to realize fire-resistant function, product is mainly used in city needs fireproof building, public place etc., delivers the power to each power unit from distribution box or transformator.
Along with development and the raising of fire-protection rating of skyscraper, and the reinforcement of people's safety consciousness, some building needs, with fire-resisting cable, higher voltage is transported to top, building.Owing to voltage is higher, traditional mica tape fire-resisting cable structure cannot meet the design requirement of electric field in cable, is completely unsuitable for.Only design with the tradition complete different structure of fire-resisting cable could meet the requirement of electrical property and fire resistance simultaneously.
Summary of the invention
The technical problem to be solved is to provide a kind of to be had more reasonable structure, presses fireproof power cable in manufacturing process is simple, reasonable price, length in service life, security performance are high modified model.
Pressing fireproof power cable in a kind of modified model of the present invention, including cable core, described cable core is formed by some insulated wire cores are stranded;The gap location of described cable core extrudes inorganic hydration packed layer, the first LSOH anti-flaming glass fibre belt that thickness is 0.1-0.2mm is extruded outside cable core, the outer wrapped thickness of first LSOH anti-flaming glass fibre belt is the Ceramic silicon rubber separation sleeve of 1-2mm, the second LSOH anti-flaming glass fibre belt that thickness is 0.1-0.2mm is extruded again outside Ceramic silicon rubber separation sleeve, weaving thickness outside second LSOH anti-flaming glass fibre belt is the galvanized steel strip armor of 1-2cm, and cable outermost layer extrudes LSOH anti-flaming oversheath that thickness is 2-4mm or thickness is the aluminium sheath of 1-2mm.
Improve further, described insulated wire cores by copper conductor, use three-layer co-extruded mode be extruded in successively the outer thickness of copper conductor be the semiconductive conductor shield of 2-3mm, thickness be that the crosslinked polyetylene insulated layer of 4-5mm, thickness are the semi-conductive insulation shield layer of 3-5mm and constitute around the copper strips metal screen layer that the thickness wrapped in outside semi-conductive insulation shield layer is 2-4mm.
The beneficial effects of the present invention is:
1, compared with prior art, this fire-resisting cable electric pressure is higher, completely dispenses with fire-resistant isinglass belt, and the construction of cable is simple, and selected material is easy to get, easy to process, not pollutes environment.
2, the inorganic hydration of extruding is filled, and can discharge a large amount of water, and form non-burn-through mineral-filled layer, preferably protect core and be not burned when meeting fire.
3, aluminium sheath will not burn, even if also will not produce any harmful gas under flame condition, the fusing point of aluminum is 660 DEG C, is generally difficult to fusing, is also only melted when aluminum pipe, and crosslinked polyethylene could burn with air contact;Even if crosslinked polyethylene burns, only produce carbon dioxide and water, do not have any harmful substance to produce.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings:
As it is shown in figure 1, press fireproof power cable in a kind of modified model of the present invention, including cable core, described cable core is formed by some insulated wire cores are stranded;Described insulated wire cores by copper conductor 1, use three-layer co-extruded mode be extruded in successively the outer thickness of copper conductor be the semiconductive conductor shield 2 of 2-3mm, thickness be that the crosslinked polyetylene insulated layer 3 of 4-5mm, thickness are the semi-conductive insulation shield layer 4 of 3-5mm and constitute around the copper strips metal screen layer 5 that the thickness wrapped in outside semi-conductive insulation shield layer is 2-4mm.
Then the gap location at cable core extrudes inorganic hydration packed layer 6, the first LSOH anti-flaming glass fibre belt 7 that thickness is 0.1-0.2mm is extruded outside cable core, the outer wrapped thickness of first LSOH anti-flaming glass fibre belt is the Ceramic silicon rubber separation sleeve 8 of 1-2mm, the second LSOH anti-flaming glass fibre belt 9 that thickness is 0.1-0.2mm is extruded again outside Ceramic silicon rubber separation sleeve, the galvanized steel strip armor 10 that thickness is 1-2cm is woven outside second LSOH anti-flaming glass fibre belt, cable outermost layer extrudes the LSOH anti-flaming oversheath 11 that thickness is 2-4mm or the aluminium sheath 11 that thickness is 1-2mm.
So that the fire resistance of cable is more preferable, cable outermost layer extrudes the aluminium sheath 11 that thickness is 1-2mm, aluminium sheath will not burn, even if any harmful gas also will not be produced under flame condition, the fusing point of aluminum is 660 DEG C, generally being difficult to fusing, be also only melted when aluminum pipe, crosslinked polyethylene could burn with air contact;Even if crosslinked polyethylene burns, only produce carbon dioxide and water, do not have any harmful substance to produce.
The present invention could meet the requirement of electrical property and fire resistance with the tradition complete different structure of fire-resisting cable simultaneously, the middle pressure crosslinked polyethylene fireproof power cable that more reasonable structure, manufacturing process are simple, reasonable price, length in service life, security performance are high, is mainly used in city and needs fireproof building, public place etc..
The above is only the preferred embodiment of the present invention, it is noted that for those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to make some improvement, and these improvement also should be regarded as protection scope of the present invention.

Claims (2)

1. modified model is pressed a fireproof power cable, including cable core, it is characterised in that: described cable core is formed by some insulated wire cores are stranded;The gap location of described cable core extrudes inorganic hydration packed layer, the first LSOH anti-flaming glass fibre belt that thickness is 0.1-0.2mm is extruded outside cable core, the outer wrapped thickness of first LSOH anti-flaming glass fibre belt is the Ceramic silicon rubber separation sleeve of 1-2mm, the second LSOH anti-flaming glass fibre belt that thickness is 0.1-0.2mm is extruded again outside Ceramic silicon rubber separation sleeve, weaving thickness outside second LSOH anti-flaming glass fibre belt is the galvanized steel strip armor of 1-2cm, and cable outermost layer extrudes LSOH anti-flaming oversheath that thickness is 2-4mm or thickness is the aluminium sheath of 1-2mm.
Modified model the most according to claim 1 is pressed fireproof power cable, it is characterized in that, described insulated wire cores by copper conductor, use three-layer co-extruded mode be extruded in successively the outer thickness of copper conductor be the semiconductive conductor shield of 2-3mm, thickness be that the crosslinked polyetylene insulated layer of 4-5mm, thickness are the semi-conductive insulation shield layer of 3-5mm and constitute around the copper strips metal screen layer that the thickness wrapped in outside semi-conductive insulation shield layer is 2-4mm.
CN201610498233.8A 2016-06-30 2016-06-30 Improved-type medium-voltage fireproof power cable Pending CN105976913A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610498233.8A CN105976913A (en) 2016-06-30 2016-06-30 Improved-type medium-voltage fireproof power cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610498233.8A CN105976913A (en) 2016-06-30 2016-06-30 Improved-type medium-voltage fireproof power cable

Publications (1)

Publication Number Publication Date
CN105976913A true CN105976913A (en) 2016-09-28

Family

ID=57019496

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610498233.8A Pending CN105976913A (en) 2016-06-30 2016-06-30 Improved-type medium-voltage fireproof power cable

Country Status (1)

Country Link
CN (1) CN105976913A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106373647A (en) * 2016-10-12 2017-02-01 无锡市长城电线电缆有限公司 Medium-voltage, fire-resistant and light flexible cable
CN106981339A (en) * 2017-05-19 2017-07-25 无锡市新阳光电缆有限公司 Three cores are pressed to resist cold power cable in a kind of low-smoke non-halogen flame-retardant
CN107017046A (en) * 2017-05-19 2017-08-04 无锡市新阳光电缆有限公司 Pair twist polyvinyl chloride insulation clad steel band armored polyvinyl-chloride sheath power cable

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5304739A (en) * 1991-12-19 1994-04-19 Klug Reja B High energy coaxial cable for use in pulsed high energy systems
CN102867589A (en) * 2012-09-07 2013-01-09 江苏东峰电缆有限公司 Middle-voltage fire-resistant power cable
CN203465967U (en) * 2013-07-25 2014-03-05 安徽江淮电缆集团有限公司 PVC insulated aluminum-sheath railway signal cable
CN103903803A (en) * 2014-03-04 2014-07-02 江苏珠影特种电缆有限公司 Three-core medium-pressure waterproof and fire-resistant 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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5304739A (en) * 1991-12-19 1994-04-19 Klug Reja B High energy coaxial cable for use in pulsed high energy systems
CN102867589A (en) * 2012-09-07 2013-01-09 江苏东峰电缆有限公司 Middle-voltage fire-resistant power cable
CN203465967U (en) * 2013-07-25 2014-03-05 安徽江淮电缆集团有限公司 PVC insulated aluminum-sheath railway signal cable
CN103903803A (en) * 2014-03-04 2014-07-02 江苏珠影特种电缆有限公司 Three-core medium-pressure waterproof and fire-resistant 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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106373647A (en) * 2016-10-12 2017-02-01 无锡市长城电线电缆有限公司 Medium-voltage, fire-resistant and light flexible cable
CN106981339A (en) * 2017-05-19 2017-07-25 无锡市新阳光电缆有限公司 Three cores are pressed to resist cold power cable in a kind of low-smoke non-halogen flame-retardant
CN107017046A (en) * 2017-05-19 2017-08-04 无锡市新阳光电缆有限公司 Pair twist polyvinyl chloride insulation clad steel band armored polyvinyl-chloride sheath power cable

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Application publication date: 20160928