CN204270715U - Wind energy cable is pressed in a kind of Halogen-free flame-retardant low-temperature resistant - Google Patents
Wind energy cable is pressed in a kind of Halogen-free flame-retardant low-temperature resistant Download PDFInfo
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- CN204270715U CN204270715U CN201420676627.4U CN201420676627U CN204270715U CN 204270715 U CN204270715 U CN 204270715U CN 201420676627 U CN201420676627 U CN 201420676627U CN 204270715 U CN204270715 U CN 204270715U
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Abstract
The utility model discloses in a kind of Halogen-free flame-retardant low-temperature resistant and press wind energy cable, comprise cable core, its cable core is by three power wire core and is arranged in that three wire core in three power wire core gaps are stranded to be formed; The gap of cable core is provided with packed layer, and cable core extrudes halogen-free flameproof band, the first oversheath and the second oversheath outward successively; Also reinforced layer is provided with between the first oversheath and the second oversheath; The invention also discloses the production method of this cable.This cable possesses low temperature resistant, resistance to frequent torsion, salt spray resistance, anti-to pull under severe wind power plant environment, and keeps that cable is smooth and easy to transmit electric power, and meets the normal operation of wind power equipment.
Description
Technical field
The utility model belongs to power cable field, is specifically related to press wind energy cable in a kind of Halogen-free flame-retardant low-temperature resistant.
Background technology
In numerous regenerative resources, with the fastest developing speed, the most applicable when number wind power generation economically at present.Wind power generation safety, clean, aboundresources, wind energy is inexhaustible, with not to the utmost, be a kind of recyclability resource of perpetuity.
Along with blower fan single-machine capacity progressively rises, blower fan set structure is in variation; Land mainstream model is to 2MW ~ 3MW development, and marine mainstream model is developed to more than 5MW by 3MW, and therefore, Wind turbines maximizes becomes development trend.The wind energy cable of domestic conventional 1.8/3kV and following electric pressure can not meet the service requirement of Large Copacity wind-driven generator, and matching used is with it rated voltage 26/35kV and following low temperature resistant middle pressure wind energy cable.
Wind energy cable generally has the feature of torsional property excellence, and meanwhile, wind energy cable generally all requires that cable has good low temperature resistant, salt spray resistance, anti-towing performance, can guarantee that cable uses under the adverse circumstances of inland severe cold, coastal waters salt air corrosion like this.But the requirement only considering the performances such as antitorque, low temperature resistant, the salt spray resistance of cable for rated voltage 26/35kV and following low temperature resistant middle pressure wind energy cable is far from being enough, rational metallic shielding structure and ground configurations design are also the guarantees guaranteeing cable security of operation.
Stand in the angle ensureing that the security of operation meeting Large Copacity wind-driven generator requires, develop in a kind of Halogen-free flame-retardant low-temperature resistant and press wind energy cable, the requirement progressively meeting Wind turbines large scale development trend just seems particularly necessary, and to rated voltage 26/35kV and following low temperature resistant middle pressure wind energy cable conductor and the polymeric barrier layer materials of insulation, the research of insulating layer material, and cable metallic screens structure, ground configurations design be the key of pressing wind energy cable in Halogen-free flame-retardant low-temperature resistant.
Utility model content
The purpose of this utility model technical problem to be solved is just to provide in a kind of Halogen-free flame-retardant low-temperature resistant presses wind energy cable, this cable possesses low temperature resistant, resistance to frequent torsion, salt spray resistance, anti-to pull under severe wind power plant environment, and keep that cable is smooth and easy to transmit electric power, meet the normal operation of wind power equipment.
Press wind energy cable in a kind of Halogen-free flame-retardant low-temperature resistant described in the utility model, comprise cable core, its cable core is by three power wire core and is arranged in that three wire core in three power wire core gaps are stranded to be formed; The gap of cable core is provided with packed layer, and cable core extrudes halogen-free flameproof band, the first oversheath and the second oversheath outward successively; Also reinforced layer is provided with between the first oversheath and the second oversheath; Described power wire core is made up of power line conductor and conductor screen semi-conductive layer, insulating barrier, insulation screen, semiconductive lapping layer and the metal screen layer be extruded in successively outside conductor; Described wire core is made up of gnd conductor and the semi-conductive layer be extruded in outside gnd conductor.
Further improvement, the cross-linking type Halogen semiconductive shielding layer of described conductor screen semi-conductive layer to be Ethylene Propylene Terpolymer be base-material.
Further improvement, described insulating barrier be with Ethylene Propylene Terpolymer be base-material cross-linking type in press second third insulation rubber.
Further improvement, the peelable cross-linking type Halogen semiconductive shielding layer of described insulation screen to be acetate ethylene copolymer and acrylonitrile-butadiene rubber be base-material.
Further improvement, described metal screen layer is tinned copper wire braid shielded.
Further improvement, described oversheath is made up of low smoke, zero halogen uvioresistant thermoset elastomer materials.
Press a production method for wind energy cable in Halogen-free flame-retardant low-temperature resistant, comprise the following steps:
1) first by be base-material conductor screen semi-conductive layer by banbury Ethylene Propylene Terpolymer, the peelable cross-linking type Halogen semi-conductive insulation shield layer of Ethylene Propylene Terpolymer to be base-material insulating barrier, acetate ethylene copolymer and acrylonitrile-butadiene rubber be base-material is processed into the mixing rubber extruded respectively;
2) preparation of power wire core: stranded good power wire core conductor is extruded once-forming by company's sulphur mode of production layering that catenary suspension type continuous vulcanization is three-layer co-extruded, equally once extrude conductor screen semi-conductive layer, second third insulating barrier and insulation screen, extrusion temperature controls at 70 DEG C-90 DEG C, production line speed control is built in 5-10 m/min, in airtight jet chimney heating continuous vulcanization after extruding, jet chimney air pressure controls at 0.9MPa ~ 1.2MPa; Form power wire core through water cooled pipeline cooling again after sulfuration, cooling section coolant-temperature gage controls at 30 DEG C ~ 50 DEG C;
3) at the outer overlapping wrapped one deck nylon semi-conductive tape of power wire core, semiconductive lapping layer is formed;
4) tinned copper wire screen is woven again outward at nylon semi-conductive tape;
5) preparation of wire core: stranded good wire core conductor is connected the sulphur mode of production by individual layer, and to extrude one deck with Ethylene Propylene Terpolymer be base-material Halogen semiconducting rubber, extrusion temperature controls at 70 DEG C-80 DEG C, production line speed control is built in 10-15 m/min, in airtight jet chimney heating continuous vulcanization after extruding, jet chimney air pressure controls at 0.9MPa ~ 1.2MPa; Form wire core through water cooled pipeline cooling again after sulfuration, cooling section coolant-temperature gage controls at 30 DEG C ~ 50 DEG C;
6) then at back-twisting cabler, three power wire core of woven tinned copper wire screen are stranded for becoming cable core with three wire core extruding semi-conductive layer, wire core is arranged in the gap of power wire core, laying up pitch control range is the laying up diameter of 20 ~ 25 times, and in stranding gap dense packing effect Halogen semiconducting rubber packing, and with fire-retardant Halogen band, whole cable core to be tightened;
7) at the outer inner sheath being extruded halogen-free anti-inflaming polyurethane material by plastic extruding machine of cable core that fire-retardant Halogen band is tightened, extrusion temperature is 155 DEG C-180 DEG C;
8) one deck impregnation polyester cord reinforced layer is woven outward at polyurethane inner sheath;
9) finally at the outer outermost layer by plastic extruding machine, halogen-free anti-inflaming polyurethane protective cover material being extruded in cable of impregnation polyester cord reinforced layer, extrusion temperature is 155 DEG C-180 DEG C, produces linear speed 8-10m/min.
The beneficial effects of the utility model are:
1. the utility model has been developed in a kind of Halogen-free flame-retardant low-temperature resistant and has been pressed wind energy cable, this cable insulation core adopt Halogen conductor screen rubber, 35kV and following second third insulation rubber and Halogen semiconductive crosslinkable peelable insulation shielding rubber three-layer co-extruded; The Halogen conductor screen rubber researched and developed, Halogen semiconductive crosslinkable peelable insulation shielding rubber its specific insulation≤100 Ω cm, Halogen performance: pH value>=4.3, conductivity weighted value≤10 μ s/mm; Rated voltage is 400 × 10 lower than dielectric loss tan δ (95 ~ 100 DEG C) maximum of second third insulation rubber of pressing wind energy cable in 35kV Halogen-free flame-retardant low-temperature resistant
4, specific insulation minimum value is 10
16Ω cm; Dielectric loss tan δ (95 ~ 100 DEG C) maximum of pressing second third insulation rubber of wind energy cable in rated voltage 35kV Halogen-free flame-retardant low-temperature resistant is 50 × 10
4, specific insulation minimum value is 10
16Ω cm.Therefore, can guarantee that the local discharging level of cable is excellent, discharge capacity≤5Pc, insulation resistance excellent performance;
2, every root power wire core of the present utility model adopts tinned copper wire braiding structure, can effectively suppress electromagnetic wave externally to be launched, reduce the interference to equipment.
3, three ground wires are placed on in the gap of cable core by the utility model, not only play the effect of conducting failure electric current, also play the effect of balanced electric field, thus guarantee cable running safety.
4, for strengthening the anti-torsion ability of cable, the utility model devises impregnation polyester cord reinforced layer outside cable inner sheath, this material at high temperature has certain bonding force with macromolecular material, place with polyurethane inner sheath and polyurethane oversheath in the middle of, when polyurethane oversheath is extruded through 180 DEG C of head temperatures, can combine closely with polyurethane inner sheath and oversheath, form one, the anti-twisting property of cable is improved greatly.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, press wind energy cable, comprise cable core in a kind of Halogen-free flame-retardant low-temperature resistant described in the utility model, its cable core is by three power wire core and is arranged in that three wire core in three power wire core gaps are stranded to be formed; The gap of cable core is provided with packed layer 7, and cable core extrudes halogen-free flameproof band 8, first oversheath 9 and the second oversheath 11 outward successively; Reinforced layer 10 is also provided with between the first oversheath 9 and the second oversheath 11; Described power wire core is made up of power line conductor 1 and conductor screen semi-conductive layer 2, insulating barrier 3, insulation screen 4, semiconductive lapping layer 5 and the metal screen layer 6 be extruded in successively outside conductor 1; Described wire core is made up of gnd conductor 12 and the semi-conductive layer 13 be extruded in outside gnd conductor.
The cross-linking type Halogen semiconductive shielding layer of described conductor screen semi-conductive layer to be Ethylene Propylene Terpolymer be base-material, the specific insulation≤100 Ω cm of conductor shield and insulation screen, Halogen performance: pH value >=4.3, conductivity weighted value≤10 μ s/mm; Described insulating barrier be with Ethylene Propylene Terpolymer be base-material cross-linking type in press second third insulation rubber, rated voltage is 400 × 104 lower than dielectric loss tan δ (95 ~ 100 DEG C) maximum of second third insulation rubber of pressing wind energy cable in 35kV Halogen-free flame-retardant low-temperature resistant; Dielectric loss tan δ (95 ~ 100 DEG C) maximum of pressing second third insulation rubber of wind energy cable in rated voltage 35kV Halogen-free flame-retardant low-temperature resistant is 50 × 104, and specific insulation minimum value is 1016 Ω cm; The peelable cross-linking type Halogen semiconductive shielding layer of described insulation screen to be acetate ethylene copolymer and acrylonitrile-butadiene rubber be base-material; Described metal screen layer is tinned copper wire braid shielded; Described reinforced layer is woven by impregnation polyester cord and forms, the fracture strength > 1070N of impregnation polyester cord.
The above is only preferred implementation method of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvement, these improvement also should be considered as protection range of the present utility model.
Claims (6)
1. press a wind energy cable in Halogen-free flame-retardant low-temperature resistant, it is characterized in that: comprise cable core, its cable core is by three power wire core and is arranged in that three wire core in three power wire core gaps are stranded to be formed; The gap of cable core is provided with packed layer (7), and cable core extrudes halogen-free flameproof band (8), the first oversheath (9) and the second oversheath (11) outward successively; Reinforced layer (10) is also provided with between the first oversheath (9) and the second oversheath (11); Described power wire core is by power line conductor (1) and is extruded in conductor (1) conductor screen semi-conductive layer (2) outward, insulating barrier (3), insulation screen (4), semiconductive lapping layer (5) and metal screen layer (6) successively and forms; Described wire core is by gnd conductor (12) and be extruded in gnd conductor (12) semi-conductive layer outward (13) and form.
2. press wind energy cable in Halogen-free flame-retardant low-temperature resistant according to claim 1, it is characterized in that, described conductor screen semi-conductive layer (2) for Ethylene Propylene Terpolymer be the cross-linking type Halogen semiconductive shielding layer of base-material.
3. press wind energy cable in Halogen-free flame-retardant low-temperature resistant according to claim 1, it is characterized in that, described insulating barrier (3) be with Ethylene Propylene Terpolymer be base-material cross-linking type in press second third insulation rubber.
4. press wind energy cable in Halogen-free flame-retardant low-temperature resistant according to claim 1, it is characterized in that, described insulation screen (4) for acetate ethylene copolymer and acrylonitrile-butadiene rubber be the peelable cross-linking type Halogen semiconductive shielding layer of base-material.
5. press wind energy cable in Halogen-free flame-retardant low-temperature resistant according to claim 1, it is characterized in that, described metal screen layer (6) is tinned copper wire braid shielded.
6. press wind energy cable in Halogen-free flame-retardant low-temperature resistant according to claim 1, it is characterized in that, described reinforced layer (10) is woven by impregnation polyester cord and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420676627.4U CN204270715U (en) | 2014-11-13 | 2014-11-13 | Wind energy cable is pressed in a kind of Halogen-free flame-retardant low-temperature resistant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420676627.4U CN204270715U (en) | 2014-11-13 | 2014-11-13 | Wind energy cable is pressed in a kind of Halogen-free flame-retardant low-temperature resistant |
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| CN204270715U true CN204270715U (en) | 2015-04-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104361945A (en) * | 2014-11-13 | 2015-02-18 | 无锡市明珠电缆有限公司 | Halogen-free flame-retardant low-temperature-resisting medium-voltage wind energy cable and manufacturing method thereof |
| CN105390200A (en) * | 2015-12-10 | 2016-03-09 | 泰丰线缆集团有限公司 | Flexible fireproof cable and preparation method therefor |
| CN111883304A (en) * | 2020-07-30 | 2020-11-03 | 开开电缆科技有限公司 | Fire-resistant medium voltage power cable |
-
2014
- 2014-11-13 CN CN201420676627.4U patent/CN204270715U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104361945A (en) * | 2014-11-13 | 2015-02-18 | 无锡市明珠电缆有限公司 | Halogen-free flame-retardant low-temperature-resisting medium-voltage wind energy cable and manufacturing method thereof |
| CN105390200A (en) * | 2015-12-10 | 2016-03-09 | 泰丰线缆集团有限公司 | Flexible fireproof cable and preparation method therefor |
| CN111883304A (en) * | 2020-07-30 | 2020-11-03 | 开开电缆科技有限公司 | Fire-resistant medium voltage power cable |
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