CN105825937A - 一种骨架、光纤电缆及三网融合低压光电复合电缆 - Google Patents

一种骨架、光纤电缆及三网融合低压光电复合电缆 Download PDF

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CN105825937A
CN105825937A CN201610257063.4A CN201610257063A CN105825937A CN 105825937 A CN105825937 A CN 105825937A CN 201610257063 A CN201610257063 A CN 201610257063A CN 105825937 A CN105825937 A CN 105825937A
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skeleton
frame
cable
blade
cables
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张敏
张勇
孙培海
赵衍梁
贾聚好
王平
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Shandong Feida Electric Power Technology Co., Ltd
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Abstract

本发明提供一种应用在电缆上的骨架,该骨架由至少两个骨架单元插接而成;骨架单元是由形状、大小相同的横叶片和竖叶片构成的“十”字型骨架;横叶片从左到右,竖叶片从上到下截面宽度渐次变大;在横叶片右部和竖叶片下部分别开设有横凹槽和竖凹槽,凹槽能使下一个骨架单元的横叶片的左部或竖叶片的上部插入;相邻的叶片形成容纳传输线的骨架槽。本骨架可拆卸,骨叶、分隔区的数目根据电缆的实际需求完全实现人为设置。骨架可适用于多种电缆,有效提高电缆的传输性能。同时,电缆骨架上的内置传输线可获得更有效保护,电缆强度可获得进一步改善。本发明还提供一种使用上述骨架的光纤电缆以及使用该光纤电缆的三网融合低压光电复合电缆。

Description

一种骨架、光纤电缆及三网融合低压光电复合电缆
技术领域
本发明属于线缆材料及线缆技术领域,尤其是指一种骨架及利用该骨架的光纤电缆及三网融合低压光电复合电缆。
背景技术
“三网融合”中的三网是指以因特网(Internet)为代表的数字通信网、以电话网(包括移动通信网)为代表的传统电信网和以有线电视为代表的广播电视网。三网代表现代信息产业中三个不同行业,即电信业、计算机业和有线电视业的基础设施。“三网融合”后,民众可用电视遥控器打电话,在手机上看电视剧,随需选择网络和终端,三网融合大大丰富了人们的现代生活!
根据国家鼓励发展信息产业和提倡节能降耗的政策精神,以及光缆市场需求的变化,市场上出现了各式各样的能实现“三网融合”的光纤复合低压电缆(OpticalFiberCompositeLow-voltageCable,简称OPLC)。
光纤复合低压电缆通常包含缆芯和护层两部分;缆芯通常包括光纤电缆、电力电缆、金属加强件等部分;其中光纤电缆部分,考虑到光纤传输性能要求和光电复合缆芯的特殊性,技术人员发明了各式各样的光纤电缆骨架。
CN103236305A一种六槽骨架,解决了施工方便的问题。但该种发明公开的骨架都是一次塑封成形,成形后,由相邻骨叶形成的分隔区的数目是固定的,因此,只能适应一种电缆的应用,骨架的应用范围较为局限。于是,CN104575811A,一种适用于电缆的骨架结构提供了骨架上的骨叶的数目可随电缆对分隔区的需求而人为设置的骨架。然而,这种骨架的圆柱状基条依然是一次塑封成形,不能完全实现骨叶数目的随意增减,不适合市场的需求。
发明内容
本发明的目的是提供一种应用在电缆上的骨架,该骨架可拆卸,可组合,骨叶、分隔区的数目根据电缆的实际需求完全实现人为设置,因此,骨架的应用范围极广,可适用于多种电缆,有效提高电缆的传输性能。同时,电缆骨架上的内置传输线可获得更有效保护,电缆强度可获得进一步改善。
本发明的电缆骨架采用了如下技术方案:一种骨架,该骨架由至少两个骨架单元插接而成;骨架单元是由形状、大小相同的横叶片和竖叶片构成的“十”字型骨架;横叶片从左到右,竖叶片从上到下截面渐次变大;在横叶片右部和竖叶片下部分别开设有横凹槽和竖凹槽,凹槽能使下一个骨架单元的横叶片的左部或竖叶片的上部插入;相邻的叶片形成容纳传输线的骨架槽。
进一步,在每一个骨架单元的横叶片和竖叶片轴线交叉处沿纵向设置有加强件。
更进一步的优选结构是,在横叶片和竖叶片的轴线上纵向嵌有屏蔽带。
更进一步的优选结构是,横叶片和竖叶片截面渐次变大的斜度为1:40~1:30;凹槽截面渐次变大的斜度为1:40~1:30。
本发明取得的有益效果如下:
1、骨架通过骨架单元的连续插接,可实现骨叶、分隔区或骨架槽数目的不断增加,适合于多种电缆需求;尤其适用于芯数较多的光纤电缆。
2、任一骨架单元可从整个骨架中抽出,进行更换、维修等施工;
3、由于任一骨架单元增设有加强件,使用该骨架的电缆,由于加强件平均分布于整个电缆,因此,电缆内部的任一位置受到的支撑力趋于相同,比较起内部仅有一根加强件的电缆,使用本骨架的电缆其抗拉抗压强度获得极大提高。
4、应用该骨架的电缆外形可制成圆形或扁形,适应市场多样化需求。
本发明还提供一种使用上述骨架的光纤电缆以及使用该光纤电缆的三网融合低压光电复合电缆。
作为优选结构,三网融合低压光电复合电缆中的电力电缆和中性线亦使用了上述骨架结构。本发明中的三网融合低压光电复合电缆,由于在电力电缆和中性线中增设了骨架,可以不再像普通的OPLC那样单独设置金属加强件。
附图说明
图1为放大的骨架单元立体结构示意图;
图2为放大的三个骨架单元插接构成的扁形8槽骨架横截面结构示意图;
图3为放大的14芯光纤电缆截面示意图;
图4为三网融合低压光电复合电缆截面示意图。
附图标记如下:
1骨架单元、1-1横叶片、1-2竖叶片、1-3横凹槽、1-4竖凹槽、1-5加强件、1-6屏蔽带、1-7骨架槽;
2光纤电缆、2-1骨架、2-2光纤、2-3外护套;
3三网融合低压光电复合电缆、3-1护套、3-2电力电缆、3-3中性线。
具体实施方式
下面结合附图,对本发明进行详细解释。
见图1和图2,本发明提供的骨架是一种根据设计需要可不断变化的骨架,尤其是应用于芯数较多的光纤电缆中,更能彰显其优越性。
图2给出了由三个骨架单元构成的骨架实施例,本发明提供的骨架,可以由若干个骨架单元连续插接构成,具体需要多少骨架单元,完全取决于设计需求。
2个骨架单元可插接成有6个骨架槽的骨架;3个骨架单元可插接成8个骨架槽的骨架;4个骨架单元,当两上两下排列插接,可插接成9个骨架槽的骨架,若一字排列插接,则可插接成10个骨架槽的骨架。骨架通过骨架单元的连续插接,可实现骨叶、分隔区或骨架槽数目的不断增加,适合于多种电缆需求;尤其适用于芯数较多的光纤电缆。
骨架单元的具体结构如下:骨架单元是由形状、大小相同的横叶片1-1和竖叶片1-2构成的“十”字型骨架;横叶片1-1从左到右、竖叶片1-2从上到下截面宽度渐次变大,即叶片的截面为等腰梯形;在横叶片1-1右部和竖叶片1-2下部分别开设有横凹槽1-3和竖凹槽1-4,下一个骨架单元的横叶片的左部插入横凹槽1-3内或者竖叶片的上部插入竖凹槽1-4内,如此连续插接的若干个骨架单元构成一骨架。横叶片1-1和竖叶片1-2分隔出若干骨架槽1-7,传输线放置于该骨架槽中,骨架槽能对传输线形成良好的保护和支撑;同时,这种方式,可以方便地取出所需的传输线,而且任一骨架单元也可从骨架中抽出,施工非常方便。
较好的实施例为,骨架单元中的横叶片1-1、横凹槽1-3从左到右,竖叶片1-2、竖凹槽1-4从上到下的截面宽度渐次变大斜度为1:40~1:30。该斜度是即能保证骨架单元的强度,同时又能保证单元骨架之间的插接顺利,同时,方便加工和组装生产。
为了增强骨架单元和骨架的强度,在横叶片1-1和竖叶片1-2轴线交叉处沿纵向设置有加强件1-5。
为了减小不同骨架槽内传输线在传输信号时的相互干扰,在横叶片(1-1)和竖叶片(1-2)的轴线上纵向嵌有屏蔽带1-6。
加强件1-5为芳纶纱或锦纶纱或阻水纱或聚酯纱或合金丝或高强度玻璃丝绳制成,起到了加强骨架的作用。
屏蔽带1-6是表面涂覆有合金箔材层的金属带,能防止电磁干扰及电磁辐射,有效防止外部电磁干扰,同时也防止内部信息辐射出去。
见图3,本发明还提供一种包含上述骨架的光纤电缆2,图中提供的实施例为14芯的光纤电缆,该光纤电缆中应用的骨架是由四个骨架单元插接而成,四个骨架单元分隔出9个骨架槽,光纤2-2以单根或双根方式置于不同的骨架槽中,骨架外挤制有外护层2-3。从图中可以看出,四根加强件分布在光纤电缆中,其支撑保护效果远远优于一根加强件。
外护层的材料为低密度聚乙烯或中密度聚乙烯或高密度聚乙烯或聚氯乙烯或低烟无卤聚乙烯或低烟低卤聚乙烯或尼龙等,这属于公知技术领域。
见图4,本发明提供的这种三网融合低压光电复合电缆3,包含缆芯和包覆在缆芯外面的护套3-1;缆芯包括使用本发明骨架的光纤电缆2、三根电力电缆3-2、一根中性线3-3。
护套3-1由内到外依次为:玻璃纱、双面覆塑钢带、聚乙烯外护套。
三根电力电缆3-2,一根中性线3-3配合使用,能降低金属保护层受热,增加电缆的载流能力,保证电缆的安全使用,同时能保证光纤电缆的传输性能不受影响。
作为优选实施方式,三根电力电缆3-2和中性线3-3中,使用了本发明所示的插接式骨架单元结构。电力电缆中的骨架单元材料可不同于光纤电缆中使用的骨架单元材料。通过在电力电缆中增设骨架,可以实现在三网融合低压光电复合电缆中不再使用金属加强件。
本发明提供一种电缆骨架用材料配方,其包括以下按照重量份数计的原料组分:
氯磺化聚乙烯CSM80~90份,硫化剂3~4份,阻燃剂25~30份,防老剂0.5~2份,硫酸钡18~22份,氧化镁15~18份;所述的硫化剂为氨基甲酸乙酯或过氧化苯甲酰;阻燃剂为三氧化二锑或氢氧化镁;防老剂为丁基二硫代氨基甲酸镍或防老剂RD。
实施例1:
氯磺化聚乙烯80份,氨基甲酸乙酯3份,三氧化二锑25份,防老剂RD0.5份,硫酸钡18份,氧化镁15份。
实施例2:
氯磺化聚乙烯83份,过氧化笨甲酰3.5份,氢氧化镁28份,丁基二硫代氨基甲酸镍2份,
硫酸钡20份,氧化镁18份。
实施例3:
氯磺化聚乙烯85份,氨基甲酸乙酯4份,三氧化二锑30份,丁基二硫代氨基甲酸镍1.5份,硫酸钡22份,氧化镁16份。
实施例4:
氯磺化聚乙烯90份,过氧化笨甲酰3份,氢氧化镁25份,防老剂RD1.8份,硫酸钡18份,氧化镁17份。
实施例5:
氯磺化聚乙烯85份,过氧化笨甲酰3.5份,三氧化二锑25份,防老剂RD1.8份,硫酸钡20份,氧化镁18份。
上述实施例产品的性能指标如下:
试验项目 单位 实施例1 实施例2 实施例3 实施例4 实施例5
抗拉强度变化率 ≥% ±25 ±25 ±25 ±25 ±25
回弹性 5 4.2 4 3.5 3
通过检测,上述实施例所制出的产品,符合产品性能要求。其中实施例5制备的产品性能最佳。本发明所制备的电缆骨架有优良的机械性能,非常适合市场发展需求。

Claims (7)

1.一种骨架,其特征在于,所述骨架由至少两个骨架单元(1)插接而成;所述骨架单元(1)是由形状、大小相同的横叶片(1-1)和竖叶片(1-2)构成的“十”字型骨架;横叶片(1-1)从左到右,竖叶片(1-2)从上到下截面渐次变大;在横叶片(1-1)右部和竖叶片(1-2)下部分别开设有横凹槽(1-3)和竖凹槽(1-4),凹槽能使下一个骨架单元的横叶片的左部或竖叶片的上部插入;相邻的叶片形成容纳传输线的骨架槽(1-7)。
2.如权利要求1所述的骨架,其特征在于,在横叶片(1-1)和竖叶片(1-2)轴线交叉处沿纵向设置有加强件(1-5)。
3.如权利要求1所述的骨架,其特征在于,在横叶片(1-1)和竖叶片(1-2)的轴线上纵向嵌有屏蔽带(1-6)。
4.如权利要求4所述的骨架,其特征在于,横叶片(1-1)和竖叶片(1-2)截面渐次变大的斜度为1:40~1:30;凹槽截面渐次变大的斜度为1:40~1:30。
5.一种光纤电缆,其特征在于,包含一个权利要求1至权利要求5任一项所述的骨架(2-1),若干条光纤(2-2)分置于骨架槽内,骨架外挤制有外护层(2-3)。
6.一种三网融合低压光电复合电缆,其特征在于包括缆芯和包覆在缆芯外面的护套(3-1);所述缆芯包括权利要求5所述的光纤电缆(2)、三根电力电缆(3-2)、一根中性线(3-3)。
7.如如权利要求6所述三网融合低压光电复合电缆,,其特征在于,所述电力电缆(3-2)、中性线(3-3)包含权利要求1或权利要求2或权利要求4任一项所述的骨架(2-1)。
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