CN202039632U - 一种特高压直流线路720/50导线用直线转角塔 - Google Patents

一种特高压直流线路720/50导线用直线转角塔 Download PDF

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CN202039632U
CN202039632U CN2011201225413U CN201120122541U CN202039632U CN 202039632 U CN202039632 U CN 202039632U CN 2011201225413 U CN2011201225413 U CN 2011201225413U CN 201120122541 U CN201120122541 U CN 201120122541U CN 202039632 U CN202039632 U CN 202039632U
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杨林
张芳杰
王虎长
阎海
王学明
李士锋
袁清泉
朱轶
林致添
武淑敏
马建春
唐明贵
邓锦辉
何洪波
陈浩
赵虎元
郭青
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Northwest Electric Power Design Institute of China Power Engineering Consulting Group
State Nuclear Electric Power Planning Design and Research Institute Co Ltd
Hennan Electric Power Survey and Design Institute
Hebei Electric Power Design and Research Institute
Jiangsu Electric Power Design Institute
China Energy Engineering Group Hunan Electric Power Design Institute Co Ltd
China Energy Engineering Group Shanxi Electric Power Engineering Co Ltd
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HUNAN ELECTRIC POWER PROSPECTING DESIGN INST
Shanxi Electric Power Exploration & Design Institute
Northwest Electric Power Design Institute of China Power Engineering Consulting Group
State Nuclear Electric Power Planning Design and Research Institute Co Ltd
Hennan Electric Power Survey and Design Institute
Hebei Electric Power Design and Research Institute
Jiangsu Electric Power Design Institute
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Abstract

本实用新型公开了一种特高压直流线路720/50导线用直线转角塔，包括地线支架、导线横担、塔头、塔身和塔脚，塔脚主材固定在基础上，塔身下方同塔脚主材固定连接，塔头同导线横担连接，导线横担一端向下弯折，导线横担上连接有地线支架。与现有技术相比，本实用新型的优点在于，所述的直线转角塔可以满足悬挂L型绝缘子串的要求，可以采用L型绝缘子串布置方式。

Description

一种特高压直流线路720/50导线用直线转角塔
技术领域
本实用新型涉及输电线路铁塔技术领域，尤其是涉及一种特高压直流线路720/50导线用直线转角塔。
背景技术
在现有技术中，直流输电线路使用的直线转角塔采用两相导线绝缘子串V型布置的方式。这种V型绝缘子串的风偏幅度很大，因此占用的电力走廊很宽，出于安全的考虑，需要将电力走廊的范围内的树木移栽或砍伐或将房屋拆迁，这都造成了极大的人力、物力成本浪费。为了克服上述现有技术的不足，可以将V型绝缘子串更换为L型绝缘子串，为了适合L型绝缘子串的串行特点，迫切需要一种可以便于悬挂L型绝缘子串的直线转角塔。
实用新型内容
本实用新型提供一种特高压直流线路720/50导线用直线转角塔，可以满足悬挂L型绝缘子串的要求。
所述的直线转角塔，包括地线支架、导线横担、塔身、塔脚，塔脚主材固定在基础上，塔身下方同塔脚主材固定连接，塔身上方同导线横担连接，导线横担一端向下弯折，地线支架与导线横担连接。
进一步的，在导线横担弯折处设有第一绝缘子串左串挂点，在导线横担上设有与所述第一绝缘子串左串挂点对应的第一绝缘子串右串挂点。
进一步的，所述右导线横担根部与塔身连接处的塔身上第二节点处设有第二绝缘子串左串挂点，在右导线横担端部设有与所述第二绝缘子串左串挂点对应的第二绝缘子串右串挂点。
进一步的，所述绝缘子串右串挂点高于所述绝缘子串左串挂点。
进一步的，导线横担包括左导线横担、右导线横担，所述左导线横担的长度大于右导线横担长度。
进一步的，所述左导线横担的端头到塔身中心轴线位置的距离为22.26米，所述右导线横担的端头到塔身中心轴线位置的距离为21.7米。
进一步的，地线支架包括左地线支架、右地线支架。塔身中心轴线位置到左地线支架端头的直线距离小于到右地线支架端头的直线距离。
从上述的技术方案可以看出，与现有技术相比，本实用新型所述的直线转角塔可以满足悬挂L型绝缘子串的要求，并且不必设置用于悬挂绝缘子串的挂架，绝缘子串可以挂在导线横担和塔身上的挂点上。因为不用设置挂架，使得直线转角塔看起来更小巧美观，结构更简单。
附图说明
图1为本实用新型实施例的结构示意图；
图2为本实用新型实施例中在塔身上设置的挂点结构示意图。
具体实施方式
下面将结合本实用新型实施例中的示意图，对本实用新型实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例，都属于本实用新型保护的范围。
本实用新型实施例提供了一种直线转角塔，参见图1，包括地线支架1、导线横担2、塔身5、塔脚6，塔脚主材固定在基础上，塔身5下方同塔脚主材6固定连接，塔身5上方同导线横担2连接，导线横担一端向下弯折。在导线横担2上设有地线支架1，
导线横担包括左导线横担3和右导线横担4。根据实际的安装情况，可以在设置左导线横担3的端头向下弯折，或者向下弯折后沿弯折方向延长预设的长度。在具体实施的时候需要注意的是，在设置导线横担端头弯折的角度时，所设置的弯折角度要以满足电气间隙为原则。
在安装L型绝缘子串7的时候，可以在导线横担2弯折部分的外端设置第一绝缘子串左串挂点，在导线横担上设有与所述第一绝缘子串左串挂点对应的第一绝缘子串右串挂点，第一绝缘子串右串挂点可以设置在左导线横担2上。在具体实施的时候，可以在左导线横担2的弯折处或者是左导线横担向下弯折延长段上设置第一绝缘子串左串挂点。
在本实用新型实施例中，所述右导线横担端部与塔身连接处下塔身第二节点处设有第二绝缘子串左串挂点，在导线横担上设有与所述第二绝缘子串左串挂点对应的第二绝缘子串右串挂点。第二绝缘子串右串挂点可以设置在右导线横担4上。
前面已经提到了L型绝缘子串的特点在于L型绝缘子串的左串长度大于L型绝缘子串的右串长度，所以设置的左串挂点要低于设置的绝缘子串右串挂点。在具体实施的时候，左导线横担3的弯折处设置的第一绝缘子串左串挂点要低于设置在左导线横担上的第一绝缘子串右串挂点，塔身右侧设置的第二绝缘子串左串挂点低于设置在右导线横担4上的第二绝缘子串右串挂点。
根据上面的描述，在具体实施的时候，可以在直线转角塔上悬挂2个L型绝缘子串，悬挂方式可以参见图1，在此不再赘述。
在前面的实施例中描述了在安装L型绝缘子串的时候，需要在塔身上设置绝缘子串的左串挂点，在具体实施的时候，左串挂点的设置可以参见图2，可以在塔身右侧面挂点处将4个角钢8设为两两角钢为一组，每组角钢背向安装。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本实用新型。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本实用新型的精神或范围的情况下，在其它实施例中实现。因此，本实用新型将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (8)

1.一种特高压直流线路720/50导线用直线转角塔，其特征在于：所述直线转角塔包括地线支架、导线横担、塔头、塔身、塔脚主材，塔脚主材固定在基础上，塔身下方同塔脚主材固定连接，塔身上方同导线横担连接，导线横担一端向下弯折，导线横担上连接地线支架。
2.根据权利要求1所述的特高压直流线路720/50导线用直线转角塔，其特征在于：所述导线横担弯折处设有第一绝缘子串左串挂点，在导线横担上设有与所述第一绝缘子串左串挂点对应的第一绝缘子串右串挂点。
3.根据权利要求1所述的特高压直流线路720/50导线用直线转角塔，其特征在于：所述右导线横担上与塔身连接的下方第二节点处设有第二绝缘子串左串挂点，在右导线横担上设有与所述第二绝缘子串左串挂点对应的第二绝缘子串右串挂点。
4.根据权利要求3所述的特高压直流线路720/50导线用直线转角塔，其特征在于：所述右横担上的第二绝缘子串左串挂点设置在右横担根部与塔身连接处的塔身上第二节点处。
5.根据权利要求2-4任一项所述的直线转角塔，其特征在于：所述绝缘子串右串挂点高于所述绝缘子串左串挂点。
6.根据权利要求1所述的特高压直流线路720/50导线用直线转角塔，其特征在于：导线横担包括左导线横担、右导线横担，所述左导线横担的长度大于右导线横担长度。
7.根据权利要求6所述的特高压直流线路720/50导线用直线转角塔，其特征在于：所述左导线横担的端头到塔身中心轴线位置的距离为22.26米，所述右导线横担的端头到塔身中心轴线位置的距离为21.7米。
8.根据权利要求1所述的特高压直流线路720/50导线用直线转角塔，其特征在于：地线支架包括左地线支架、右地线支架；塔身中心轴线到左地线支架端头的直线距离小于到右地线支架端头的直线距离。
CN2011201225413U 2011-04-22 2011-04-22 一种特高压直流线路720/50导线用直线转角塔 Expired - Lifetime CN202039632U (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103046794A (zh) * 2012-12-27 2013-04-17 国核电力规划设计研究院 一种特高压直流曲臂直线塔
CN104088491A (zh) * 2014-07-30 2014-10-08 湖南省电力勘测设计院 一种220kV变电站斜坡式竖向布置方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103046794A (zh) * 2012-12-27 2013-04-17 国核电力规划设计研究院 一种特高压直流曲臂直线塔
CN104088491A (zh) * 2014-07-30 2014-10-08 湖南省电力勘测设计院 一种220kV变电站斜坡式竖向布置方法

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