CN202887839U - Halogen-free low-smoke flame-retardant medium-voltage frequency changer cable - Google Patents
Halogen-free low-smoke flame-retardant medium-voltage frequency changer cable Download PDFInfo
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- CN202887839U CN202887839U CN 201220644551 CN201220644551U CN202887839U CN 202887839 U CN202887839 U CN 202887839U CN 201220644551 CN201220644551 CN 201220644551 CN 201220644551 U CN201220644551 U CN 201220644551U CN 202887839 U CN202887839 U CN 202887839U
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Abstract
The utility model discloses a halogen-free low-smoke flame-retardant medium-voltage frequency changer cable. The frequency changer cable is characterized in that a three-layer coextruded insulated core is composed of a compacted stranded naked copper conductor and a conductor shielding layer, a chemical crosslinked polyethylene insulation layer and an insulation shielding layer pressed and wrapped on the conductor, inner-layer bare copper wires are uniformly wound outside the insulated core, soft copper strips are wound outside the inner-layer bare copper wires at intervals, and multiple insulated cores are twisted so as to form a cable core; halogen-free flame-retardant rope filling layers are arranged in the gaps among the cable cores, and the outer side of the cable core is coated with a halogen-free flame-retardant strip taped covering in an overlapping manner and a thermoplastic halogen-free low-smoke flame-retardant polyolefin inner sheath in a pressing wrapping manner; and outer-layer bare copper wires are uniformly wound outside the sheath, soft copper strips are wound outside the outer-layer bare copper wires at intervals, halogen-free low-smoke flame-retardant strips are wound, and the outermost layer of the cable is provided with a thermoplastic halogen-free low-smoke flame-retardant polyolefin outer sheath in the pressing wrapping manner. The cable has the characteristics of being halogen-free, low-smoke, flame-retardant, anti-jamming, oil-proof, ageing-resistant and the like, meanwhile also has excellent mechanical, electrical and environment-friendly functions, and is widely applied to an electric power frequency conversion transmission system of locations such as a high-power frequency changer.
Description
Technical field:
The utility model relates to a kind of LSOH anti-flaming medium voltage frequency converter cable, belongs to technical field of electric wires and cables.
Background technology:
Along with the fast development of converter technique, with it supporting Special cable for frequency converter be employed more and more extensive, as the medium voltage frequency converter cable, the development of converter technique is played an important role.Because the particularity of medium voltage frequency converter cable, present many medium voltage frequency converter manufactories or use producer to require all medium voltage frequency converter cables must have Halogen, fire-retardant, low cigarette, the performance such as anti-interference, and property indices is had clear and definite regulation.
Domestic medium voltage frequency converter is started late with the development of cable, the technical merit of each producer is uneven, add more and more higher to the requirement of Special cable for frequency converter in recent years, cause many producers because technical force is limited, can not design, produce the medium voltage frequency converter private cable product that satisfies specification requirement.Permitted great producer or company, adopt imported product for the medium voltage frequency converter private cable is most of, yet the import cable is expensive, the production cycle is long, is unfavorable for the development of Chinese converter technique industry.
Summary of the invention:
For overcoming the defective of prior art, the purpose of this utility model is to provide a kind of LSOH anti-flaming medium voltage frequency converter cable, have the characteristics such as Halogen, low cigarette, fire-retardant, anti-interference, oil resistant, also have simultaneously the functions such as excellent machinery, electric, environmental protection, can be widely used in the place electric power frequency-changing transmission systems such as big-power transducer, product performance index is better than the international standard requirement.
The utility model technical solution problem adopts following technical scheme:
LSOH anti-flaming medium voltage frequency converter cable, it is characterized in that by pressing stranded bare copper conductor and the conductor shield that extrudes on described conductor, processes for chemically crosslinked polyethylene insulating barrier and insulation screen consist of three-layer co-extruded insulated wire cores, the outer uniform winding of insulated wire cores has the internal layer bare copper wire, outside described internal layer bare copper wire, be provided with soft copper band gap lapping layer, consist of metal screen layer with the internal layer bare copper wire, the many insulated wire cores that are surrounded with described metal screen layer are twisted into cable core, the cable core gap is provided with halogen-free flameproof rope packed layer, the outer overlapping halogen-free flameproof band lapping layer that is surrounded with of described cable core, be extruded with the thermoplastic halogen-free and low-smoke flame-retardant polyolefin inner sheath, the outer uniform winding of described inner sheath has outer bare copper wire, described outer bare copper wire outside is provided with the outer lapping layer of soft copper band gap, consist of total screen with outer bare copper wire, described total screen is surrounded with the LSOH anti-flaming band outward, and the outermost layer of cable is extruded with the thermoplastic halogen-free and low-smoke flame-retardant polyolefin oversheath.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1, the utility model insulated wire cores metal screen layer adopts bare copper wire uniform winding and the wrapped phase-splitting metallic shield of soft copper band gap structure, improve greatly in the shielding cross section, under cable breaks down state, can be at screen by large electric current, to guarantee the normal use of cable, security performance and the useful life of greatly improving cable.
2, inner sheath adopts bare copper wire uniform winding and the wrapped total shielding construction of soft copper band gap outward in the utility model, and improve greatly in the shielding cross section, not only can pass through short circuit current, and have very excellent interference free performance, improves the useful life of cable.
3, extruding the thermoplastic halogen-free and low-smoke flame-retardant polyolefin inner/outer sheath in the utility model is a kind of novel environment friendly material, not only have excellent flame-retarding characteristic, environmental-protecting performance, have more Halogen, low cigarette, alkali-free, without asbestos, oil resistant, the characteristic such as ageing-resistant, satisfy the instructions for use of high-power frequency converter cable fully.
Description of drawings:
Fig. 1 is structural representation of the present utility model.
Number in the figure: 1 conductor, 2 conductor shields, 3 insulating barriers, 4 insulation screens, 5 internal layer bare copper wires, 6 soft copper band gap lapping layers, 7 packed layers, 8 lapping layers, 9 inner sheaths, 10 outer bare copper wires, the outer lapping layer of 11 soft copper band gaps, 12 inhibiting tapes, 13 oversheaths.
Below pass through embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Embodiment:
Embodiment: referring to Fig. 1, the LSOH anti-flaming medium voltage frequency converter cable of present embodiment, by pressing stranded bare copper conductor 1 and the conductor shield 2 that extrudes on conductor 1, processes for chemically crosslinked polyethylene insulating barrier 3 and insulation screen 4 consist of three-layer co-extruded insulated wire cores, the outer uniform winding of insulated wire cores has internal layer bare copper wire 5, outside internal layer bare copper wire 5, be provided with soft copper band gap lapping layer 6, consist of metal screen layer with internal layer bare copper wire 5, the many insulated wire cores that are surrounded with metal screen layer are twisted into cable core, the cable core gap is provided with halogen-free flameproof rope packed layer 7, the outer overlapping halogen-free flameproof band lapping layer 8 that is surrounded with of described cable core, be extruded with thermoplastic halogen-free and low-smoke flame-retardant polyolefin inner sheath 9, described inner sheath 9 outer uniform winding have outer bare copper wire 10, and be provided with lapping layer 11 outside the soft copper band gap in outer bare copper wire 10 outsides, consist of total screen with outer bare copper wire 10, described total screen is surrounded with LSOH anti-flaming band 12 outward, and the outermost layer of cable is extruded with thermoplastic halogen-free and low-smoke flame-retardant polyolefin oversheath 13.
In the implementation, corresponding structure setting and material are selected to be respectively:
Conductor 1 is to adopt the anaerobic bare copper wire to press the strand system to form, conductor layer any surface finish, without burr;
Press semiconductive conductor screen material during conductor shield 2 adopts, and insulation, insulation shielding are three-layer co-extruded together;
Insulating barrier 3 is to be extruded in the layer that extrudes that forms on the conductor screen by processes for chemically crosslinked polyethylene, adopts the three-layer co-extruded technique of chemical crosslinking;
Press semiconductive insulation shielding material during insulation screen 4 adopts, and insulation, conductor screen are three-layer co-extruded together;
Internal layer bare copper wire 5 adopts high-quality bare copper wire uniform winding on insulation screen;
Soft copper band gap lapping layer 6 adopts the soft copper band gap wrapped on the internal layer bare copper wire, consists of metal screen layer with internal layer bare copper wire 5, and wrapped clearance rate is not more than 40%;
Packed layer 7 adopts the halogen-free flameproof rope, fills rounding;
Lapping layer 8 adopts the halogen-free flameproof band overlapping wrapped in the cable core outside;
Outer bare copper wire 10 adopts high-quality bare copper wire uniform winding on inner sheath;
The outer lapping layer 11 of soft copper band gap adopts the soft copper band gap wrapped on outer bare copper wire, consists of total screen with outer bare copper wire 10, and wrapped clearance rate is not more than 40%;
Inhibiting tape 12 adopts the LSOH anti-flaming band overlapping wrapped outside total shielding;
Oversheath 13 adopts and extrudes thermoplastic halogen-free and low-smoke flame-retardant polyolefin.
Claims (1)
1. LSOH anti-flaming medium voltage frequency converter cable, it is characterized in that by pressing stranded bare copper conductor (1) and extruding conductor shield (2) on described conductor (1), processes for chemically crosslinked polyethylene insulating barrier (3) and insulation screen (4) consist of three-layer co-extruded insulated wire cores, the outer uniform winding of insulated wire cores has internal layer bare copper wire (5), outside described internal layer bare copper wire (5), be provided with soft copper band gap lapping layer (6), consist of metal screen layer with internal layer bare copper wire (5), the many insulated wire cores that are surrounded with described metal screen layer are twisted into cable core, the cable core gap is provided with halogen-free flameproof rope packed layer (7), the outer overlapping halogen-free flameproof band lapping layer (8) that is surrounded with of described cable core, be extruded with thermoplastic halogen-free and low-smoke flame-retardant polyolefin inner sheath (9), the outer uniform winding of described inner sheath (9) has outer bare copper wire (10), described outer bare copper wire (10) outside is provided with the outer lapping layer (11) of soft copper band gap, consist of total screen with outer bare copper wire (10), described total screen is surrounded with LSOH anti-flaming band (12) outward, and the outermost layer of cable is extruded with thermoplastic halogen-free and low-smoke flame-retardant polyolefin oversheath (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220644551 CN202887839U (en) | 2012-11-29 | 2012-11-29 | Halogen-free low-smoke flame-retardant medium-voltage frequency changer cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220644551 CN202887839U (en) | 2012-11-29 | 2012-11-29 | Halogen-free low-smoke flame-retardant medium-voltage frequency changer cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202887839U true CN202887839U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220644551 Expired - Fee Related CN202887839U (en) | 2012-11-29 | 2012-11-29 | Halogen-free low-smoke flame-retardant medium-voltage frequency changer cable |
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| Country | Link |
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| CN (1) | CN202887839U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103365A (en) * | 2014-07-24 | 2014-10-15 | 安徽顺驰电缆有限公司 | Halogen-free, low-smoke and flame-retardant crosslinked cable |
| CN105938738A (en) * | 2016-05-26 | 2016-09-14 | 合肥中海信息科技有限公司 | Variable frequency cable for silver-copper alloy conductor aerospace |
| CN108520800A (en) * | 2018-04-28 | 2018-09-11 | 无锡市恒汇电缆有限公司 | Pressure crane cable and preparation method thereof in a kind of skyscraper radiating and cooling |
| CN116543968A (en) * | 2023-07-07 | 2023-08-04 | 特变电工(德阳)电缆股份有限公司 | Compact medium-voltage cable |
-
2012
- 2012-11-29 CN CN 201220644551 patent/CN202887839U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103365A (en) * | 2014-07-24 | 2014-10-15 | 安徽顺驰电缆有限公司 | Halogen-free, low-smoke and flame-retardant crosslinked cable |
| CN105938738A (en) * | 2016-05-26 | 2016-09-14 | 合肥中海信息科技有限公司 | Variable frequency cable for silver-copper alloy conductor aerospace |
| CN105938738B (en) * | 2016-05-26 | 2017-12-26 | 安徽省巢湖海兴电缆集团有限公司 | A kind of yellow gold conductor Aero-Space frequency-changing cable |
| CN108520800A (en) * | 2018-04-28 | 2018-09-11 | 无锡市恒汇电缆有限公司 | Pressure crane cable and preparation method thereof in a kind of skyscraper radiating and cooling |
| CN116543968A (en) * | 2023-07-07 | 2023-08-04 | 特变电工(德阳)电缆股份有限公司 | Compact medium-voltage cable |
| CN116543968B (en) * | 2023-07-07 | 2023-09-29 | 特变电工(德阳)电缆股份有限公司 | Compact medium-voltage cable |
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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: 20130417 Termination date: 20171129 |