• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention discloses a self-bearing anti-tensile wind energy power cable, including a conductor, a bearing core and a protective sleeve. The second rubber layer and the first rubber layer are adhered to the inner side of the protective sleeve, four cable cores are arranged on the inner side of the first rubber layer, an anti-tensile copper core is adhered to the axial center of the space between the cable cores composed of the bearing core, the conductor and the isolation layer from inside to outside respectively; the second rubber layer and the first rubber layer are adhered to the inner side of the protective sleeve, so that the rubber layer has certain flexibility after the torsion is generated when used and the cable generates a pre-torsion. Moreover, the protective copper wires and the fillers are intertwisted inside the protective sleeve, so that the protective copper wires and the fillers also have pre-torsion; and because the rubber has good flexibility, the cable cores wrapped by the first rubber layer and the protective copper wires wrapped by the second rubber layer have close pitches, avoiding the possibility of easy deformation and twisting off of the cable during long-term use.
    公开号:NL2020937A
    申请号:NL2020937
    申请日:2018-05-15
    公开日:2018-07-19
    发明作者:Zeng Lingguo；Li Zhijun
    申请人:Chongqing Yu Feng Wire & Cable Co Ltd；
    IPC主号:
    专利说明:

    Technical Field
    The invention relates to the technical field of power cables, in particular to a selfbearing anti-tensile wind energy power cable.
    Background
    In May 2009, National Quality Supervision and Testing Center for Cables and Wires formally implemented the technical specification of the low-temperature wind energy power cable, which describes the structural dimensions, materials used and performance thereof, voltage level, ambient temperature, use occasions and test methods in detail.
    Before this, low-temperature wind energy power cables were of varying quality, a large number of unqualified or inferior products flooded the market, bringing economic losses to users and serious threats to the normal operation of electrical control equipment as well as power systems. The conductor of the low-temperature wind energy power cable adopts a multi-strand layered intertwisting mode, the pitch range of the intertwisting conductor is
    21 - 25 times of the strand, 17-20 times of the inner layer and 11-14 times of the outer layer, cables take different cable pitch diameter ratios according to different codes; for moving occasions, the pitch diameter ratio is not more than 14 times of the outer diameter of the cable; for non - moving occasions, the pitch diameter ratio is not more than 18 times of the outer diameter of the cable. However, there are many drawbacks in the use of wind energy power cables, for example:
    1. In the prior art, a long-term reciprocating twisting is made in the wind power generating facility, the life of the intertwisted conductor and the conductive wire core is not very long, and the cable gets easily deformed and twisted off. The reason for these drawbacks is that the intertwisted conductor pitch is sparse, the intertwisted conductor is not very compact, and gets easily damaged without the pre-torsion under forward and backward twisting, so that the requirements of the prior art cannot be met.
    2, In the prior art, when wind energy cable is used in the outside environment for a long time, since the strip-shaped fill cotton is generally used inside the wind energy cable and the air amount inside the cable cores is large, under the effect of the heat generated in power transmission, the protection on the outer side of the cable cores is likely to be oxidized, and under the action of torsion, the protection layer gets crushed to cause electric leakage to waste electric energy, so that the requirements of the prior art cannot be met.
    Summary
    The objective of the present invention is to provide a self-bearing anti-tensile wind energy power cable to solve the above-mentioned problems in the background.
    To achieve the foregoing objective, the present invention provides the following technical scheme: a self-bearing anti-tensile wind energy power cable includes a conductor, a bearing core, an isolation layer, protective copper wires and a protective sleeve, a second rubber layer and a first rubber layer are adhered to the inner side of the protective sleeve, eight protective copper wires and fillers are intertwisted between the second rubber layer and the first rubber layer, and four cable cores are arranged on the inner side of the first rubber layer, an anti-tensile copper core is adhered to the axial center of the space between the cable cores composed of the bearing core, the conductor and the isolation layer from inside to outside respectively.
    Preferably, an insulation layer is provided between the conductor and the isolation layer inside the cable core.
    Preferably, the space between the cable cores and the anti-tensile copper core inside the first rubber layer is uniformly filled with fillers.
    Preferably, the periphery of the protective sleeve is coated with a grease layer. Preferably, the anti-tensile copper core is 30 cm longer than the protective sleeve.
    Compared with the prior art, the present invention has the following beneficial effects:
    1. In the present invention, the second rubber layer and the first rubber layer are adhered to the inner side of the protective sleeve, so that the rubber layer has certain flexibility after the torsion is generated during use, and the cable generates a pre-torsion. Moreover, the protective copper wires and the fillers are intertwisted inside the protective sleeve, so that the protective copper wires and the fillers also have pre-torsion; and because the rubber has good flexibility, the cable cores wrapped by the first rubber layer and the protective copper wires wrapped by the second aibber layer have close pitches, avoiding the possibility of easy deformation and twisting off of the cable during longterm use.
    2. In the present invention, the space between the cable cores and the anti-tensile 10 copper core inside the second rubber layer is uniformly filled with the fillers so that the oxygen content inside the second rubber layer reduces greatly. Moreover, an isolation layer is provided on the outer side of the cable core, and an insulation layer is provided on the inner side of the cable core, which avoids the electricity waste caused by electric leakage. Additionally, the bearing core in the center of the conductor and the anti-tensile copper core in the center of the four cable cores increase the reactance ability of the cable itself.
    Brief Description of the Drawings
    FIG. 1 is a sectional view of the present invention;
    FIG. 2 is a schematic view of semi-sectional structure of the present invention.
    In the drawings: 1 - conductor; 2 - bearing core; 3 - insulation layer; 4 - isolation layer; 5 - fillers; 6 - protective copper wire; 7 - first aibber layer; 8 - protective sleeve; 9 second rubber layer; 10 - anti-tensile copper core; 11 - grease layer; 12 - cable core.
    Detailed Description
    Hereinafter, the embodiments of the present invention will be described clearly and 25 completely with reference to the drawings of the embodiment in the present invention. Obviously, the described embodiments are merely a part of the embodiments of the present invention rather than all the embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the invention.
    Referring to FIGs. 1-2, the present invention provides a technical scheme: a selfbearing anti-tensile wind energy power cable includes a conductor 1, a bearing core 2, an isolation layer 4, protective copper wires 6 and a protective sleeve 8, wherein a second rubber layer 9 and a first rubber layer 7 are adhered to the inner side of the protective sleeve 8, eight protective copper wires 6 and fillers 5 are intertwisted between the second rubber layer 9 and the first rubber layer 7, and four cable cores 12 are arranged on the inner side of the first rubber layer 7, an anti-tensile copper core 10 is adhered to the axial center of the space between the cable cores 12 composed of the bearing core 2, the conductor 1 and the isolation layer 4 from inside to outside respectively.
    Insulation layer 3 is disposed between the conductor 1 and the isolation layer 4 in the inner side of the cable cores 12 to prevent possibility of electric leakage after the isolation layer is oxidized. The space between the cable cores 12 and the anti-tensile copper core
    10 in the inner side of the first rubber layer 7 is uniformly filled with the fillers 5 so that the internal air is less, slowing down the oxidation rate of the cable core 12 during a longterm use. The outer periphery of the protective sleeve 8 is coated with the grease layer 11 so as to increase the oxidation resistance of the protective sleeve and the service life of the cable. Both ends of the anti-tensile copper core extend beyond the protective sleeve by a distance of 30cm, which protects the cable from being excessively tensioned and broken.
    Working principle: when used, the cable is arranged at the position required by wind power generation, and the extra section of the anti-tensile copper core 10 is fixed at a firm position to play an anti-tensile role. When the cable is installed, the bearing core 2 inside the conductor 1 is also firmly arranged on the equipment along with the conductor 1, increasing the anti-tensile ability greatly, and when torsion is generated, since the second rubber layer 9 and the first rubber layer 7 have certain flexibility, the cable generates pre 5 torsion. Moreover, since the protective copper wires 6 and the fillers 5 are twisted inside the cable, the protective copper wires 6 and the fillers 5 also have pre - torsion, and since the rubber has good flexibility, the cable cores 12 wrapped by the first rubber layer 7 and the protective copper wires 6 wrapped by the second rubber layer 9 have close pitches, avoiding the possibility of easy deformation and twisting off of the cable during longterm use.
    Though an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to this embodiment without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and the equivalents thereof.
    权利要求:
    Claims (5)
    [1]
    CONCLUSIONS
    A self-supporting pulling force-receiving wind power cable, comprising: a conductor (1), a supporting core (2), a separation layer (4), protective copper wires (6) and a protective sleeve (8), wherein a second rubber layer (9) and a first rubber layer (7) is adhered to the inside of the protective sleeve (8), eight protective copper wires (6) and fillers (5) are twisted together between the second rubber layer (9) and the first rubber layer (7), four cable cores (12) are arranged on the inside of the first rubber layer (7), a tensile-receiving copper core (10) is adhered to an axial center of the space between the cable cores (12), and the cable cores (12) are composed of the bearing core (2), the conductor (1) and the barrier layer (4) from the inside to the outside, respectively.
    [2]
    The self-supporting tensile force-receiving wind power cable according to claim 1, wherein an insulating layer (3) is provided between the conductor (1) and the separation layer (4) within the cable cores (12).
    [3]
    The self-supporting tensile-receiving wind power cable according to claim 1, wherein the space between the cable cores (12) and the tensile-receiving copper core (1) on the inside of the first rubber layer (7) is uniformly filled with fillers (5) .
    [4]
    The self-supporting tensile force-receiving wind power cable according to claim 1, wherein a grease layer (11) is provided on the outer circumference of the protective sleeve (8).
    [5]
    The self-supporting tensile-receiving wind power cable according to claim 1, wherein both ends of the tensile-receiving copper core (10) extend a distance of 30 cm beyond the protective sleeve (8).
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    同族专利:
    公开号 | 公开日
    CN107301891B|2020-03-13|
    NL2020937B1|2021-10-04|
    CN107301891A|2017-10-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS58140913A|1982-02-15|1983-08-20|Sumitomo Electric Industries|Crosslinked polyethylene insulated cable with water prevention|
    JPH0886943A|1994-09-19|1996-04-02|Sumitomo Electric Ind Ltd|Self-sustaining cable and its producing method|
    CN102890982A|2012-09-28|2013-01-23|浙江汉维通信器材有限公司|Self-supporting mine cable|
    CN105405513A|2015-12-08|2016-03-16|江苏荣宜电缆有限公司|Self-bearing tensile wind energy power cable|
    CN206236473U|2016-11-30|2017-06-09|江苏国信东凌风力发电有限公司|A kind of waterproof anti-twisting cable used for wind power generation|
    RU160352U1|2015-04-10|2016-03-20|Приватное акционерное общество "Украинский научно-исследовательский институт кабельной промышленности"|SHIP ELECTRIC HALOGEN-FREE CABLE|
    CN206961553U|2017-06-27|2018-02-02|重庆渝丰鑫新线缆科技有限公司|Power cable applied to wind power generation|
    法律状态:
    2021-04-07| HC| Change of name(s) of proprietor(s)|Owner name: YUFENG TECHNOLOGY CO., LTD.; CN Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), CHANGE OF OWNER(S) NAME; FORMER OWNER NAME: CHONGQING YU FENG WIRE & CABLE CO., LTD Effective date: 20210311 |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201710501772.7A|CN107301891B|2017-06-27|2017-06-27|Self-bearing tensile wind energy power cable|
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