CN205247916U - Cross -linked polyethylene insulated power cable for coal mines - Google Patents

Cross -linked polyethylene insulated power cable for coal mines Download PDF

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Publication number
CN205247916U
CN205247916U CN201520955456.3U CN201520955456U CN205247916U CN 205247916 U CN205247916 U CN 205247916U CN 201520955456 U CN201520955456 U CN 201520955456U CN 205247916 U CN205247916 U CN 205247916U
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layer
fire
conductor
retardant
cross
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CN201520955456.3U
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周军建
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Yongtong Zhongce Holdings Ltd
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Yongtong Zhongce Holdings Ltd
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Abstract

The utility model discloses a cross -linked polyethylene insulated power cable for coal mines, there is conductor shield in conductor outside cladding in proper order, the fire -retardant band layer of taking of low smoke and zero halogen, the crosslinked polyethylene insulating layer, half conductor insulation shielding layer and iron shielded layer constitute the conductor sinle silk, there is fire -retardant butyronitrile inner liner in three conductor sinle silks outside cladding in proper order, the outsourcing lacing, interior sheath, armor and outer jacket, the clearance intussuseption is filled with fire -retardant asbest rope filling layer between conductor sinle silk and the fire -retardant butyronitrile inner liner, it has the glass fiber silk to fill between interior sheath and the armor, interior sheath and outer jacket are the fire -retardant ethylene vinyl acetate rubber of low -smoke low -halogen. It adopts the insulating material of crosslinked polyethylene to replace polyvinyl chloride, through fire resistance, insulating property and the heat resistance of reinforced insulation and restrictive coating, increases substantially thermal aging, insulating nature, resistance to chemical corrosion and fire behaviour to it increases the mechanical strength of cable to add outer cover structure.

Description

Cross-linked polyethylene insulated power cable for coal mines
Technical field
The utility model relates to power cable technical field, especially relates to a kind of colliery crosslinked polyethylene exhaustedEdge power cable.
Background technology
The normal PVC insulated power cable that adopts in the electric line fixedly laying under coal mine, still,Polyvinyl chloride contains halogen in the time that cable runs into calcination or fire condition, and burning will produce the harm such as hydrogen chlorideThe poisonous gas of health, brings to the personnel of downhole cable repair or chance fire disaster escaping greatlyPotential safety hazard. In recent years, along with the fast development of power cable industry, power cable with cross-linked polyethylene insulationProduct have started to widely popularize application gradually as an alternative. Due to operating environment comparatively severe under coal mine,Cable often breaks down, and be generally mechanical external force and cause breakage to cause short circuit, open circuit and electric leakage accident, withAnd cable insulation suffers the problems such as galvano-cautery, cause equipment to stop operating, affect user's use, andBring greatest loss to user. Therefore, how to apply power cable with cross-linked polyethylene insulation, and increaseThe anti-flammability of forceful electric power cable, electrical insulating property, the technological innovation that improves wearability, anti-external mechanical influence power becomesIndustry is sought the key point of technological break-through.
Utility model content
The utility model is for the deficiencies in the prior art, and technical problem to be solved is to provide a kind of colliery and usesPower cable with cross-linked polyethylene insulation, it adopts crosslinked polyetylene insulated material to substitute polyvinyl chloride, by increasingAnti-flammability, electrical insulating property and the heat resistance of strong insulation and restrictive coating, increase substantially heat-resistant aging, insulationProperty, chemical resistance and fire resistance, and increase the mechanical strength of cable by setting up sheathed structure, carryHigh erosion prevention, increases the service life.
The utility model is to make by the following technical programs above-mentioned technical problem be solved.
Cross-linked polyethylene insulated power cable for coal mines, comprises that cross section is three circular conductors, conductor outsideBe coated with successively conductor shield, low-smoke non-halogen flame-retardant band belting layer, crosslinked polyetylene insulated layer, semiconductorInsulation screen and metal screen layer form conductor thread core, and three conductor thread core outsides are coated with fire-retardant successivelyButyronitrile inner liner, outer belting layer, sheath, armor and outer jacket, conductor thread core and fire-retardant butyronitrile linerBetween layer, in gap, be filled with fire-retardant asbestos cord packed layer, between sheath and armor, be filled with glass fibreSilk, sheath and outer jacket are low smoke and low halogen ethylene vinyl acetate rubber.
As preferably, semiconducting insulation screen layer is ethylene vinyl acetate and hydrogenated nitrile-butadiene rubber mixture.
As preferably, metal screen layer is copper wire or copper strip shielding layer.
As preferably, between low-smoke non-halogen flame-retardant band belting layer and crosslinked polyetylene insulated layer, be filled with glass fibersDimension silk.
As preferably, outer belting layer is low-smoke non-halogen flame-retardant band material-structure.
As preferably, armor is steel band, finer wire or thicker wire sheathed structure.
As preferably, conductor is for pressing copper free wire.
The beneficial effects of the utility model:
1. be applicable to the defeated of rated voltage 0.6/1kV, 1.8/3kV, 3.6/6kV, 6/6kV, 6/10kV, 8.7/10kVDistribution line, can substitute oil-impregnated paper insulation power cable completely and part substitutes polyvinyl chloride insulation electric power electricityCable.
2. the closely knit compactness of the construction of cable, has relative sliding between each element, by setting up low-smoke non-halogen flame-retardant band bagBelt, outer belting layer, filled glass fiber silk, makes it have better anti-flammability, heat resistance and resistance toChemical corrosion resistance.
3. filled glass fiber silk can keep cable to have certain flexibility and resistance to bend(ing).
4. sheath and outer jacket adopt low smoke and low halogen ethylene vinyl acetate rubber composition, have significantly strengthenedThe anti-flammability of cable and electrical insulating property, improved decay resistance.
5. strengthened tensile strength, compression strength, external force resistance performance of cable etc. by sheathed structure is set, improvedErosion prevention, has improved the quality of cable, has extended service life.
6. greatly strengthened fire resistant flame retardant by fill fire-retardant asbestos cord between conductor thread core and fire-retardant butyronitrile inner linerPerformance, is difficult for fusing after being heated, ensured the electrical characteristic of cable excellence.
Brief description of the drawings
Fig. 1 is section structure schematic diagram of the present utility model.
In figure: 1-conductor, 2-conductor shield, 3-low-smoke non-halogen flame-retardant band belting layer, the crosslinked polyetylene insulated layer of 4-,5-semiconducting insulation screen layer, 6-metal screen layer, the fire-retardant butyronitrile inner liner of 7-, the outer belting layer of 8-, protects in 9-Layer, 10-armor, 11-outer jacket, the fire-retardant asbestos cord packed layer of 12-.
Detailed description of the invention
Also by reference to the accompanying drawings the utility model is described in detail below by embodiment.
The utility model cross-linked polyethylene insulated power cable for coal mines as shown in Figure 1, is applicable to specified electricityPress the electric line of 0.6/1kV, 1.8/3kV, 3.6/6kV, 6/6kV, 6/10kV, 8.7/10kV. CompriseCross section is three circular conductors 1, and conductor 1 is chosen as and presses copper free wire. Conductor 1 outside is coated with successivelyConductor shield 2, low-smoke non-halogen flame-retardant band belting layer 3, crosslinked polyetylene insulated layer 4, semiconducting insulation screenCover layer 5 and metal screen layer 6 and form conductor thread core, semiconducting insulation screen layer 5 is preferably ethene acetic acidVinyl acetate and hydrogenated nitrile-butadiene rubber mixture, strengthen anti-flammability and electrical insulating property, and metal screen layer 6 is copper wireOr copper strip shielding layer. Can be chosen between low-smoke non-halogen flame-retardant band belting layer 3 and crosslinked polyetylene insulated layer 4Be filled with glass fiber, in maintenance certain flexibility and resistance to bend(ing), further strengthen electricity absolutelyEdge and heat resistance. Three conductor thread cores outside be coated with successively fire-retardant butyronitrile inner liner 7, outer belting layer 8,Sheath 9, armor 10 and outer jacket 11, fill out in gap between conductor thread core and fire-retardant butyronitrile inner liner 7Be filled with fire-retardant asbestos cord packed layer 12, strengthening fire resistant flame retardant performance, is difficult for fusing after being heated, ensured cableExcellent electrical characteristic. Between sheath 9 and armor 10, be filled with glass fiber, sheath 9 and outerSheath 11 is low smoke and low halogen ethylene vinyl acetate rubber. Outer belting layer 8 can adopt low smoke and zero halogen resistanceCombustion band material-structure. Armor 10 is selected steel band, finer wire or thicker wire sheathed structure.
The utility model is not limited to above-described preferred embodiment, based on those skilled in the art instituteThe known technology that can know or adopt various distortion that institute in prior art can equivalence replacement and changeEmbodiment, every based on spirit of the present utility model or technical conceive, all should be included in the utility modelProtection domain within.

Claims (7)

1. cross-linked polyethylene insulated power cable for coal mines, is characterized in that: comprise that cross section is circular three conductors (1),Conductor (1) outside is coated with conductor shield (2), low-smoke non-halogen flame-retardant band belting layer (3), crosslinked successivelyPolyethylene layer (4), semiconducting insulation screen layer (5) and metal screen layer (6) form conductor linesCore, three conductor thread cores outside be coated with successively fire-retardant butyronitrile inner liner (7), outer belting layer (8), in protectLayer (9), armor (10) and outer jacket (11), between conductor thread core and fire-retardant butyronitrile inner liner (7)In gap, be filled with fire-retardant asbestos cord packed layer (12), between sheath (9) and armor (10), fillHave glass fiber, sheath (9) and outer jacket (11) are low smoke and low halogen ethylene vinyl acetateRubber.
2. cross-linked polyethylene insulated power cable for coal mines according to claim 1, is characterized in that: semiconductor is exhaustedEdge screen layer (5) is ethylene vinyl acetate and hydrogenated nitrile-butadiene rubber mixture.
3. cross-linked polyethylene insulated power cable for coal mines according to claim 1, is characterized in that: metallic shieldLayer (6) is copper wire or copper strip shielding layer.
4. cross-linked polyethylene insulated power cable for coal mines according to claim 1, is characterized in that: low smoke and zero halogenBetween inhibiting tape belting layer (3) and crosslinked polyetylene insulated layer (4), be filled with glass fiber.
5. cross-linked polyethylene insulated power cable for coal mines according to claim 1, is characterized in that: outer belting layer(8) be low-smoke non-halogen flame-retardant band material-structure.
6. cross-linked polyethylene insulated power cable for coal mines according to claim 1, is characterized in that: armor(10) be steel band, finer wire or thicker wire sheathed structure.
7. cross-linked polyethylene insulated power cable for coal mines according to claim 1, is characterized in that: conductor (1)For pressing copper free wire.
CN201520955456.3U 2015-11-26 2015-11-26 Cross -linked polyethylene insulated power cable for coal mines Active CN205247916U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520955456.3U CN205247916U (en) 2015-11-26 2015-11-26 Cross -linked polyethylene insulated power cable for coal mines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520955456.3U CN205247916U (en) 2015-11-26 2015-11-26 Cross -linked polyethylene insulated power cable for coal mines

Publications (1)

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CN205247916U true CN205247916U (en) 2016-05-18

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109036674A (en) * 2018-09-10 2018-12-18 贵州西南制造产业园有限公司 A kind of coal mine cable with protective jacket
CN109712752A (en) * 2018-12-30 2019-05-03 新沂博瑞工业设计有限公司 A kind of flame retardant type power cable
CN114038616A (en) * 2021-11-26 2022-02-11 广东穗星电缆实业有限公司 High-temperature-resistant flame-retardant cable

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109036674A (en) * 2018-09-10 2018-12-18 贵州西南制造产业园有限公司 A kind of coal mine cable with protective jacket
CN109712752A (en) * 2018-12-30 2019-05-03 新沂博瑞工业设计有限公司 A kind of flame retardant type power cable
CN114038616A (en) * 2021-11-26 2022-02-11 广东穗星电缆实业有限公司 High-temperature-resistant flame-retardant cable

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