CN201282269Y - 500kV线路杆塔避雷侧针 - Google Patents

500kV线路杆塔避雷侧针 Download PDF

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CN201282269Y
CN201282269Y CNU2008201064744U CN200820106474U CN201282269Y CN 201282269 Y CN201282269 Y CN 201282269Y CN U2008201064744 U CNU2008201064744 U CN U2008201064744U CN 200820106474 U CN200820106474 U CN 200820106474U CN 201282269 Y CN201282269 Y CN 201282269Y
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赵波
马金元
郝建和
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DATONG ULTRAHIGH PRESSURE ELECTRIC POWER SUPPLY Co OF NORTH CHINA GRID Co Ltd
State Grid Corp of China SGCC
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DATONG ULTRAHIGH PRESSURE ELECTRIC POWER SUPPLY Co OF NORTH CHINA GRID Co Ltd
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Abstract

本实用新型涉及架空输电线路的防雷,具体是一种500kV线路杆塔避雷侧针。进一步提高了现有架空输电线路的防雷能力,该500kV线路杆塔避雷侧针包括杆状针架、固定于杆状针架首端的引雷针体、以及设置于杆状针架尾端的用于将杆状针架固定在杆塔架空地线支架上的紧固件。本实用新型结构简单,易于运输,组装方便,安全合理,适用于易发生雷电绕击的输电线路铁塔,防止500kV架空输电线路附近雷电直击杆塔或导线。

Description

500kV线路杆塔避雷侧针
技术领域
本实用新型涉及架空输电线路的防雷,具体是一种500kV线路杆塔避雷侧针。
背景技术
架空输电线路点多面广、线长,长年运行于野外,其运行状况极易受自然、地形、气候、环境的影响,尤其每年雷雨季节,雷害严重威胁着输电线路的安全运行。为了尽可能消除雷害对架空输电线路的影响,电力线路工作人员采取了众多行之有效的架空输电线路防雷措施,其中,架空地线是常用防雷措施之一。但是考虑到雷害有反击和绕击之分,并经理论计算和运行实践均表明,雷云绕过架空地线,直击导线的概率仍然很高。为此,应该将架空地线外移,降低保护角至5度以下,提高地线的屏蔽效果;在山区地面倾角显著的区段,甚至应进一步降低保护角至0度甚至负保护角。而目前在实现地线外移时,基于多种因素(例如:线路铁塔的结构、承载能力、成本等等)影响,地线外移实施不易,限制了现有架空输电线路防雷能力的提高。
发明内容
本实用新型为了进一步提高现有架空输电线路的防雷能力,提供了一种500kV线路杆塔避雷侧针。
本实用新型是采用如下技术方案实现的:500kV线路杆塔避雷侧针,包括杆状针架、固定于杆状针架首端的引雷针体、以及设置于杆状针架尾端的用于将杆状针架固定在杆塔架空地线支架上的紧固件。
使用时,将该避雷侧针沿垂直线路方向固定于杆塔的架空地线支架上,引雷针体朝外设置,杆状针架尾端通过紧固件与杆塔的架空地线支架固定。当发生雷电绕击时,雷云会先对该侧针放电,雷电流通过接地装置入地,起到防雷作用。
与现有技术相比,本实用新型的应用可以增大导线屏蔽效果,防止输电线路铁塔发生绕击。本实用新型结构简单,易于运输,组装方便,安全合理,适用于易发生雷电绕击的输电线路铁塔,防止500kV架空输电线路附近雷电直击杆塔或导线。
附图说明
图1为本实用新型的结构示意图;
图2为本实用新型的使用状态示意图;
图3为本实用新型紧固件的结构示意图;
图中:1-杆状针架;2-引雷针体;3-紧固件;4-架空地线支架。
具体实施方式
500kV线路杆塔避雷侧针,包括杆状针架1、固定于杆状针架1首端的引雷针体2、以及设置于杆状针架1尾端的用于将杆状针架1固定在杆塔架空地线支架4上的紧固件3。为配合杆塔架空地线支架的结构,所述紧固件3采用通过螺栓固定在一起的两半式抱箍,如图3所示;具体实施时,杆状针架采用∠50×5×3米的角钢制成;引雷针体采用
Figure Y200820106474D0004102134QIETU
12×2.2米的圆钢制成;两半式抱箍是由两段不同长度的扁钢制弯而成。

Claims (1)

1、一种500kV线路杆塔避雷侧针,其特征在于:包括杆状针架(1)、固定于杆状针架(1)首端的引雷针体(2)、以及设置于杆状针架(1)尾端的用于将杆状针架(1)固定在杆塔架空地线支架(4)上的紧固件(3)。
CNU2008201064744U 2008-11-06 2008-11-06 500kV线路杆塔避雷侧针 Expired - Lifetime CN201282269Y (zh)

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CNU2008201064744U CN201282269Y (zh) 2008-11-06 2008-11-06 500kV线路杆塔避雷侧针

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101834424A (zh) * 2010-05-03 2010-09-15 辽宁省电力有限公司锦州供电公司 水平排列10kv绝缘线线路加装架空避雷线方法及避雷器支架

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101834424A (zh) * 2010-05-03 2010-09-15 辽宁省电力有限公司锦州供电公司 水平排列10kv绝缘线线路加装架空避雷线方法及避雷器支架

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