CN102957002B - 用于增强的电缆的张力状态的型锻连接器 - Google Patents
用于增强的电缆的张力状态的型锻连接器 Download PDFInfo
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Abstract
本发明涉及一种用于增强的电缆的张力状态的型锻连接器。改进的电缆连接器包括连接器***件,该连接器***件具有尺寸设计成接收增强的电缆的芯的轴向钻孔。连接器主体具有基本呈圆柱状的外表面和基本呈圆柱状的腔。所述腔的远侧部分的尺寸设计成接收连接器***件。腔的从远侧部分向近侧移位的第二部分的尺寸设计成接收电缆的绞合导线。连接器主体可被构造成具有腔的一个或多个附加部分,该腔的一个或多个附加部分具有逐渐增大的直径,这些部分的数量取决于电缆的尺寸。可替选地,所述腔的内表面可具有轻微的锥形。使用单个模具,在多个轴向隔开的位置用型锻工具压紧连接器主体以夹紧绞合导线并且还夹紧连接器***件。
Description
相关申请的交叉引用
该申请为2011年10月17日递交的申请号为13/274,503的部分继续申请。
技术领域
本发明涉及电力传输领域,尤其涉及用于具有由绞合导线环绕的承载负荷的芯的增强的电缆的全张力连接器,其用于变电站和高压电力传输线路。
背景技术
高容量、高强度增强的绞合电缆通常被用于架空电力线路。这种电缆的示例是钢芯铝线(ACSR)。在ACSR中,外绞线选择为铝,这是因为其优异的导电性、重量轻和低成本。外绞线环绕一根或多根中心钢绞线,该中心钢绞线提供需要支撑电缆重量而不拉伸可延展的铝绞合导线的强度。这与仅由铝绞合导线构成的电缆相比赋予电缆总体较高的拉伸强度。其他类型的具有由绞合导线环绕的承载负荷的芯的增强的电缆包括(但并不限于)钢芯软铝绞线(ACSS)、铝包钢芯铝合金绞线(ACSS/AW)、钢芯梯型截面软铝绞线(ACSS/TW)、铝合金芯铝绞线(ACAR)和铝导体复合材料芯(ACCC)。
连接器在电力传输***的效率和可靠性方面发挥着重要的作用。用于架空传输线路的电缆需要用于铰接的连接器和尽头管段组件。共同转让的第7,874,881号美国专利公开了用于所有铝电缆的张力状态的配件。然而,该配件可与具有由绞合导线环绕的承载负荷的芯的增强的电缆一起使用,由此产生的连接不能承受与电缆本身被设计承受的相同的高拉伸载荷。用于增强的电缆的连接器通常包括具有连接器主体和***件或芯夹的两部分的组件。该***件首先被紧固到电缆芯并且随后连接器主体被紧固到***件和电缆导线。对于型锻的连接器,这需要两个不同尺寸的模具。
发明内容
本发明提供了一种具有***件的改进的电缆连接器,该***件具有尺寸设计成接收电缆芯的轴向钻孔。连接器主体具有基本呈圆柱状的外表面和基本呈圆柱状的腔。具有基本呈圆柱状的第一内表面的腔的远侧部分的尺寸设计成接收连接器***件。从远侧部分向近侧移位的腔的第二部分具有基本呈圆柱状的第二内表面,该第二内表面的尺寸设计成接收电缆的绞合导线。连接器主体可被构造成具有腔的一个或多个附加部分,该腔的一个或多个附加部分具有直径逐渐增大的基本呈圆柱状的内表面,这些部分的数量取决于电缆的尺寸。可替选地,该腔的内表面可具有轻微的锥形。使用单个模具,在多个轴向隔开的位置用型锻工具压紧连接器主体以夹紧绞合导线并且还压紧连接器***件,由此夹紧电缆的芯。可替选地,使用两个不同的模具,可在电缆的芯被***之后,但在连接器芯被***到连接器主体之前,压紧连接器芯。
附图说明
图1为ACSR电缆的截面图;
图2为安装在电缆上的根据本发明的实施方式的连接器的侧视图;
图3为沿着线A-A穿过图2中示出的连接器和电缆的截面图;
图4为第一类型的连接器***件的透视图;
图5为图4所示的连接器***件的端视图;
图6为第二类型的连接器***件的透视图;
图7为图6所示的连接器***件的端视图;
图8为第三类型的连接器***件的透视图;
图9为图8所示的连接器***件的端视图;
图10为第四类型的连接器***件的透视图;
图11为图10所示的连接器***件的端视图;
图12为图2所示的连接器主体的截面图;
图13示出在连接器主体上的型锻区;
图14为根据本发明的另一实施方式的连接器主体的截面图。
具体实施方式
在以下描述中,为了解释而非限制的目的,提出了具体细节以便彻底理解本发明。然而,显然,对于本领域技术人员,可以在脱离这些具体细节的其他实施方式中实施本发明。在其他情况下,省略公知的方法和装置的详细描述以便不会由于不必要的细节使本发明的描述模糊。
参照ACSR电缆描述了本发明。然而,本发明还适用于ACSS、ACSS/AW、ACSS/TW、ACAR、ACCC和其他具有由绞合导线环绕的承载负荷的芯的增强的电缆。该芯可包括钢、高强度铝合金或复合材料,而绞合导线可包括铝、铜或其合金。
在图1中示出了常见类型的ACSR电缆10。具有行业称号26/7的所述特定类型的电缆,具有环绕芯14的二十六股外部铝导线12,芯14包括七股钢绞线。如上文所述,钢芯是促成电缆10的拉伸强度的主要因素。
在图2和图3中示出了根据本发明的一个实施方式的连接器20。连接器主体22具有基本呈圆柱状的外表面,并且具有从近端26延伸到环形底座表面28的钻孔中央腔24。连接器***件30被***到腔24并且靠着底座表面28安置。在电缆10端部的铝绞线被去除约等于连接器***件的长度的距离。电缆10的端部被***腔24,并且钢芯14装配到连接器***件30中的中心轴向钻孔,并且铝绞线的被削减的端部被包围在腔24的近侧部分。一旦以该方式组装,利用下文所述的多个型锻模将连接器20固定到电缆10的端部。
连接器20可以被构造成具有在各端部接收电缆的管状主体的接头连接器,或者构造成具有在主体的远端的适合的结构联接件(例如孔或U形夹)的张力状态的终端。可替选地,终端结构联接件可以被结合在连接器***件中。可以用例如3003-H18的适合的铝合金制造连接器主体22。
连接器***件30可以被构造成如图4和图5中示出的简单的管状主体300或可以根据若干其他设计之一构造。图6和图7中示出了一种这样的设计。连接器***件310被构造成具有中心轴向钻孔312的管,并且在截面图中,辐条314从环绕中心钻孔的环形区域316向外辐射状伸出。图8和图9中示出另一连接器***件设计。连接器***件320被构造成具有中心轴向钻孔322的管,并且在截面图中,辐条324从外环形部分326向内辐射状伸出。图10和图11中示出了又一连接器***件设计。连接器***件330通常为具有中心轴向钻孔332和类似于套爪卡盘的多个轴向延伸的狭槽334的管状构型。本发明的范围不限于这些特定构型。当围绕连接器***件型锻连接器主体时,其他构型的连接器***件可以被用来夹紧电缆的芯。连接器***件可具有结合到轴向钻孔的内表面上的氧化铝或其他适合的磨料以增加在电缆的芯上的机械夹紧力。可替选地,轴向钻孔的内表面可以被加工有内螺纹、周向齿或其他表面抛光材料以增大连接器***件在电缆的芯上的夹紧力。此外,连接器***件而不是连接器主体可以结合终端连接器的结构联接件,例如孔或U形夹。可以用例如6061-T6铝或工具钢之类的适合的铝或钢合金制造连接器***件。
图12为示出内部结构的连接器主体22的截面图。在连接器主体的***连接器***件的部分A中,腔24具有直径d1,直径d1仅略微大于连接器***件的外径。从部分A朝向连接器主体的近端26移动,腔的直径逐步增大。各个这样的阶梯部传输不同的压力到电缆并且起到将型锻负荷分布到ACSR电缆中的所有的铝绞线层。腔24的与部分A的近侧相邻的部分B具有直径d2。如此处示出的,d2大于d1。然而,部分B可以具有与部分A相同的直径。与部分B的近侧相邻的腔24的部分C具有直径d3,直径d3大于直径d2。附加地,腔24的向近侧移置的部分可具有进一步递增的直径。阶梯部的数量可以比附图中所示的更少或更多并且通常由电缆的尺寸来确定。
现参照图13,在电缆和连接器***件已经被***腔24之后,外连接器主体在多个位置被型锻以使其环绕电缆的铝绞线并且环绕夹紧电缆的钢绞线的连接器***件均匀地被固定。优选使用由DMCPower,Inc.(加迪纳,加利福尼亚)制造的360°径向型锻工具执行型锻操作。连接器主体在部分A内被型锻以固定连接器***件和电缆的钢芯。可能需要多个叠置的型锻模以充分固定电缆***件。连接器主体还在部分B和部分C内被型锻以固定铝绞合导线。随着连接器主体的内径减小,在各部分的压缩比和压缩应力增加约3%到20%。在铝绞线上的任何连续的型锻模之间存在间距或间隙,该间距或间隙用D来表示。在约0.1"到0.5"范围之内的间距,允许当铝绞线受到张力时在型锻模后面张开并且在型锻模后面锁定电缆。此外,在部分A和部分B中的型锻模之间存在间隙D2,该间隙D2也允许绞合导线张开。固定连接器***件的部分A中的型锻模和设置在其中的电缆的钢芯具有通过连接器传输电缆的拉伸载荷的主要功能,而在部分B和部分C(和任何具有进一步增加的内径的附加部分)中的型锻模增加拉伸强度,但也充当在电缆和连接器之间建立导电性的功能。由于外连接器主体具有均匀的直径,故仅需要单个模具在部分A、部分B和部分C的每一个中型锻连接器主体。
正如现有技术的用于增强的电缆的连接器,还可以使用两个模具以略有不同的一系列步骤将连接器20附接到电缆。连接器***件可以为如图4和图5中所示的简单的管的情况下,首先,可以用与***件的外径相比尺寸较小的模具将连接器***件型锻到电缆芯上。然后,可以用与连接器主体的外径相比尺寸较大的模具将连接器主体型锻到连接器***件和电缆导线上。在该情况下,在电缆10的端部处的绞合导线首先被去除约等于连接器***件的长度的一段距离,如上文所述。在电缆10的端部处暴露的芯被***到在连接器***件30中的中心径向钻孔并且利用适合尺寸的模具将连接器***件型锻到电缆芯。该连接器***件随后被***到连接器主体22的腔24,直到该连接器***件紧靠底座表面28。连接器主体随后被型锻到连接器***件和电缆的绞合导线上,如上文所述。
图14为根据本发明的另一实施方式的连接器主体220的截面图。尽管连接器主体22的内腔24被阶梯化,然而连接器主体220的腔240从d1逐渐变化到在部分E的d4。该构型还导致施加到部分E内的连接器主体的各型锻模根据在各型锻模位置处的内径,传递不同的压缩比和压缩应力到电缆,以便将型锻载荷分布到电缆中的所有绞合导线层。
应该理解,上述的本发明可以其他具体形式来体现而不脱离本发明的精神或本质特征。因此,可以理解,本发明不受限于前面示出的细节,而由所附的权利要求书来限定。
Claims (4)
1.一种将连接器附接到具有由绞合导线环绕的芯的电力电缆的方法,所述方法包括:
提供连接器,所述连接器包括:连接器***件,所述连接器***件具有尺寸设计成接收所述电缆的所述芯的轴向钻孔;和连接器主体,所述连接器主体具有在所述连接器主体的近端的开口,并具有基本呈圆柱状的外表面,所述开口与具有尺寸设计成接收所述连接器***件的远侧部分的腔连通,所述远侧部分具有第一内径的第一内表面,所述腔还具有从远侧部分向近侧设置的第二部分,所述第二部分具有第二内径的第二内表面,所述第二内表面尺寸设计成接收所述绞合导线,其中,所述第二内径大于所述第一内径;所述腔还具有在近侧与所述第二部分相邻的第三部分,所述第三部分也用于接收所述绞合导线并且具有第三内径的第三内表面,其中所述第三内径大于所述第二内径;
去除绞合导线的接近于所述电缆的端部的一部分以露出所述电缆芯的对应部分;
将所述电缆芯的露出的部分***到在所述连接器***件中的所述钻孔;
将所述电缆的所述端部***到所述连接器主体的所述腔从而使得所述连接器***件***到所述连接器主体中的所述腔的所述远侧部分并且所述绞合导线***到所述腔的所述第二部分;
用至少第一压力压紧环绕所述腔的所述远侧部分的所述连接器主体;
用第二压力压紧环绕所述腔的所述第二部分的所述连接器主体;
用第三压力压紧环绕所述腔的所述第三部分的所述连接器主体;
其中,对环绕所述腔的所述第三部分的所述连接器主体的所述外表面的压紧与对环绕所述腔的所述第二部分的所述连接器主体的所述外表面的压紧轴向间隔开大约0.1英寸至0.5英寸,从而使得所述绞合导线在所述连接器主体的压紧部分之间张开。
2.根据权利要求1所述的方法,其中,使用型锻工具执行压紧所述连接器主体的所述外表面的步骤。
3.根据权利要求1所述的方法,其中,所述方法还包括,在将所述电缆的所述端部***到所述连接器主体的所述腔之前,压紧所述连接器***件以接合所述电缆芯的被***到所述连接器***件的所述部分。
4.根据权利要求3所述的方法,其中,使用型锻工具执行压紧所述连接器***件的步骤。
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US13/274,503 US20130043072A1 (en) | 2011-08-15 | 2011-10-17 | Full tension swaged acsr connector |
US13/274,503 | 2011-10-17 | ||
US13/413,473 | 2012-03-06 | ||
US13/413,473 US9166303B2 (en) | 2011-08-15 | 2012-03-06 | Full tension swaged connector for reinforced cable |
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CN110541910A (zh) * | 2019-08-15 | 2019-12-06 | 江苏双汇电力发展股份有限公司 | 一种可调节压接式拉线金具及其与拉线的压接方法 |
TWI817067B (zh) * | 2019-12-20 | 2023-10-01 | 美商Ctc全球公司 | 用於高架電纜之入埠硬體、用於端接高架電纜的方法及用於通過端接配置來查詢高架電纜的方法 |
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CN105680196B (zh) | 2018-08-03 |
ES2742828T3 (es) | 2020-02-17 |
BR102012020381B1 (pt) | 2020-12-15 |
LT2560239T (lt) | 2019-09-10 |
KR101366463B1 (ko) | 2014-02-21 |
CY1122026T1 (el) | 2020-10-14 |
HRP20191453T1 (hr) | 2019-11-15 |
AU2012202914B2 (en) | 2015-04-30 |
JP5702340B2 (ja) | 2015-04-15 |
DK2560239T3 (da) | 2019-08-19 |
BR102012020381B8 (pt) | 2021-11-30 |
AU2012202914A1 (en) | 2013-03-07 |
RU2531370C2 (ru) | 2014-10-20 |
HUE045346T2 (hu) | 2019-12-30 |
RU2012134837A (ru) | 2014-02-20 |
KR20130018496A (ko) | 2013-02-25 |
BR102012020381A2 (pt) | 2013-11-05 |
CN102957002A (zh) | 2013-03-06 |
JP2013042655A (ja) | 2013-02-28 |
CN105680196A (zh) | 2016-06-15 |
PT2560239T (pt) | 2019-09-05 |
MX2012006208A (es) | 2013-02-19 |
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