WO2014012345A1 - 一种采用"i-j-i"串型的新型输电线路杆塔 - Google Patents

一种采用"i-j-i"串型的新型输电线路杆塔 Download PDF

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Publication number
WO2014012345A1
WO2014012345A1 PCT/CN2013/000125 CN2013000125W WO2014012345A1 WO 2014012345 A1 WO2014012345 A1 WO 2014012345A1 CN 2013000125 W CN2013000125 W CN 2013000125W WO 2014012345 A1 WO2014012345 A1 WO 2014012345A1
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Prior art keywords
string
cross arm
wire
insulator string
conductor
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PCT/CN2013/000125
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English (en)
French (fr)
Inventor
王力
罗正帮
刘西民
朱晓鹏
董江戎
陈焰彦
梁东跃
于永洋
葛宜俊
夏新运
杨雪锋
李静坤
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安徽华电工程咨询设计有限公司
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Publication of WO2014012345A1 publication Critical patent/WO2014012345A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables
    • H02G7/20—Spatial arrangements or dispositions of lines or cables on poles, posts or towers

Definitions

  • the utility model relates to the technical field of high voltage transmission lines.
  • a wire insulator arrangement scheme adopts an "I” and a "V” string combination type, and the "I” string has the advantages of simple structure and convenient installation, but The wind deflection angle of the wire suspension string is large, and the horizontal length of the tower is long, which results in a large width of the power line corridor.
  • the "V” string can effectively reduce the deflection angle of the cable suspension and reduce the width of the power line corridor, but the pole width of the tower is longer.
  • the distance between the layers is large, the amount of steel in the tower is increased, and the construction cost is increased.
  • the economic and technical performance of the "IV - 1" arrangement of the wire insulator string is relatively superior, but the combination still has the following defects -
  • the purpose of the utility model is to provide a new type of transmission line tower adopting "I-ji" string type, which adopts an insulator string "iji" arrangement mode, and the middle conductor insulator string is "J" string type, in order to ensure effective control of the corridor.
  • Case It includes a tower body, an upper wire crossarm, a middle wire cross arm, a lower wire cross arm, an upper wire insulator string, a middle wire insulator string, and a lower wire insulator string.
  • the tower body is respectively provided with an upper wire cross arm and a middle wire cross.
  • the upper and lower conductors are traversed, and the upper conductor insulator string is mounted under the cross arm of the upper conductor.
  • the upper end of the middle conductor insulator string is connected to the middle conductor cross arm, the lower end is connected to the lower conductor cross arm, and the lower conductor is mounted under the cross arm.
  • the insulator string, the middle conductor insulator string is of the ⁇ type.
  • the middle wire insulator string comprises an upper string, a lower string, and a flexible metal chain, and is composed of an upper string of "I" type, a lower string of "/" type, and a flexible metal chain of the bottom.
  • the utility model adopts the "iJi" arrangement mode
  • the upper and lower phase conductor insulator strings adopt the "I” type insulator string suspension method
  • the middle conductor insulator string adopts the "J” type insulator string suspension mode
  • the "J" string type is mainly represented by The "I” type upper string and the "/" type lower string and flexible metal fitting chain are formed.
  • the upper string is connected with the middle conductor cross arm
  • the flexible metal fitting chain is connected with the lower wire cross arm
  • the "J" string type can effectively reduce the drape.
  • the swing angle of the insulator string reduces the size of the tower head and reduces the width of the line corridor.
  • the upper string When the wind direction is toward the tower, the upper string maintains the vertical state, mainly by the lower horizontal force component to offset the wind load. Under this condition The upper string is mainly affected by the self-weight load of the wire and the vertical component force generated by the lower string. The lower string is mainly affected by the horizontal component and the vertical component force generated by the wind load.
  • the motion of the upper string is The center wire cross-suspension point is the center of the circle, the above string length is the radius, and the lower-end wire hanging point swings upward along the arc, because the flexible string link is used between the lower string and the lower wire cross-arm.
  • the length of the lower string and the flexible metal fitting chain on the axis of the wire suspension point to the lower wire cross-link connection point can be effectively shortened, so that the upper string wire suspension point moves upward along the circular arc track until the next string and The length of the flexible metal chain cannot be extended.
  • the upper string is subjected to the self-weight load of the wire, the wind load and the tension of the lower string and the flexible metal chain, and the lower string and the flexible metal chain are only subjected to the tensile force generated by the wind load, thereby being effective.
  • the length of the cross wire of the middle wire can be shortened and the layer spacing of the cross arm between the middle and lower phases can be reduced.
  • the utility model adopts an insulator string "iji" arrangement mode, a middle wire insulator string In the "J" string type, while ensuring the effective control of the width of the line corridor, the "W" string arrangement of the middle conductor insulator string is solved, the cross-winding of the conductor in the tower is too long, and the distance between the middle conductor and the lower conductor is large. This has led to the increase in the full height of the tower, the corresponding increase in steel consumption and basic engineering volume, and the disadvantage of poor economy.
  • Figure 1 is a schematic view of the structure of the present invention
  • Figure 2 is an enlarged view of the middle wire insulator string.
  • a new type of transmission line tower adopting "I-JI" string type including tower body 1, upper wire cross arm 2, middle wire cross arm 3, lower wire cross arm 4, upper wire insulator string 5, the middle wire insulator string 6, the lower wire insulator string 7, the tower body 1 is respectively provided with the upper wire cross arm 2, the middle wire cross arm 3, the lower wire cross arm 4, the upper wire cross 2 is mounted with the upper wire insulator In the string 5, the upper end of the middle conductor insulator string 6 is connected to the middle conductor crossarm 3, the lower end is connected to the lower conductor cross arm 4, and the lower conductor cross arm 4 is mounted with the lower conductor insulator string 7, the middle conductor insulator string 6 It is a "J" type.
  • the middle wire insulator string 6 comprises an upper string 8, a lower string 9, and a flexible metal chain 10, which is composed of an upper string 8 of an "I" type, a lower string 9 of a "/" type, and a flexible gold chain 10 of a bottom. .
  • the utility model adopts the "I-JI” arrangement mode
  • the upper and lower phase conductor insulator strings adopt the "I” type insulator string suspension method
  • the middle conductor insulator string adopts the "J” type insulator string suspension mode
  • the "J" string type is mainly It consists of an upper string of "I” type and a lower string of "/" type, and a flexible metal chain.
  • the upper string is connected to the middle conductor, and the flexible metal chain is connected to the lower conductor cross arm.
  • the "J" string type can be effectively reduced.
  • the angle of the suspension of the small suspension insulator string thereby reducing the size of the tower head and reducing the width of the line corridor.
  • the upper string When the wind direction is toward the tower, the upper string maintains the vertical state, mainly by the lower horizontal force component to offset the wind load. Under the circumstance, the upper string is mainly affected by the self-weight load of the wire and the vertical component force generated by the lower string. The lower string is mainly affected by the wind load. The horizontal component and the vertical component force are generated.
  • the upper string When the wind direction is facing away from the tower, the upper string is moved in the center of the horizontal cross-arm suspension point.
  • the above string length is the radius, and the upper string is suspended along the arc. Swing upward, because the lower string and the lower wire cross arm are connected by a flexible metal chain.
  • the upper string When the upper string is swung, the length of the lower string and the flexible metal chain on the axis of the wire suspension point to the lower wire cross-link connection point can be effectively shortened.
  • the upper string of wire suspension points are moved upward along the circular arc track until they are constrained by the length of the lower string and the flexible metal fitting chain. At this time, the upper string is subjected to the self-weight load of the wire, the wind load and the lower string and the flexible metal chain.
  • the pulling force, the lower string and the flexible metal fitting chain are only subjected to the pulling force generated by the wind load, thereby effectively reducing the deflection angle of the hanging string of the conductor, shortening the length of the cross arm of the middle conductor and reducing the layer spacing of the cross arm between the middle and lower phases.
  • the utility model adopts the "iji" arrangement mode of the insulator string, and the middle conductor insulator string is in the "J" string type, and the wire crossover in the pole tower of the middle wire insulator string "V" string arrangement is solved while ensuring the effective control of the width of the line corridor.
  • the gap between the long and medium conductors and the lower conductor is large, which leads to the increase of the full height of the tower, the corresponding increase in steel consumption and the amount of basic engineering, and the disadvantage of poor economy.

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  • Insulators (AREA)

Abstract

一种采用"I—J—I"串型的输电线路杆塔，包括塔身（1），设置于塔身上的上导线横担（2）、中导线横担（3）和下导线横担（4），以及分别与各横担相接的上导线绝缘子串（5）、中导线绝缘子串（6）和下导线绝缘子串（7），其中，上、下导线绝缘子串为"I"型，中导线绝缘子串为"J"型。"I—J—I"串型的布置方式可有效控制线路走廊宽度，同时可解决"V"型中导线绝缘子串存在的导线横担过长、横担层间距较大的问题，可降低杆塔整体高度、减少钢材耗用量及基础工程量。

Description

Figure imgf000003_0001
一种采用 " i-J- 1 " 串型的新型输电线路杆塔 技术领域：
本实用新型涉及高压输电线路技术领域。
背景技术- 现有高压输电线路双回路直线杆塔在垂直排列时，导线绝缘子串 型布置方案均采用 " I " 、 "V" 串组合型式， " I " 串具有结构简单、 安装方便的优点， 但导线悬垂串的风偏角度较大， 杆塔横担长， 导致 电力线路走廊宽度较大， "V" 串可有效减小导线悬垂串风偏角度， 降低电力线路走廊宽度， 但杆塔横担较长， 层间距离较大， 增加杆塔 钢材用量，增加工程建设成本，通常情况下，导线绝缘子串 " I-V - 1 " 布置方式的经济技术性能相对较为优越，但该组合方式仍存在以下缺 陷-
1、 为保证中相 "V" 串布置， 杆塔中相横担过长， 导致杆塔钢材 耗用量较大；
2、 杆塔中相与下相间横担层间距较大， 导致杆塔全高增加， 杆 塔钢材耗用量与基础工程量相应增加， 经济性较差。
实用新型内容：
本实用新型的目的是提供一种采用 " I- j-i " 串型的新型输电线 路杆塔，它采用绝缘子串 " i-j-i "布置方式，中导线绝缘子串呈" J" 串型， 在保证有效控制线路走廊宽度的同时，解决了中导线绝缘子串
"V" 串布置时， 杆塔中导线横担过长、 中导线与下导线间横担层间 距较大， 导致杆塔全高增加、 钢材耗用量与基础工程量相应增加， 经 济性较差的缺点。
为了解决背景技术所存在的问题，本实用新型是采用以下技术方 案： 它包括塔身、 上导线横担、 中导线横担、 下导线横担、 上导线绝 缘子串、 中导线绝缘子串、 下导线绝缘子串， 塔身上分别设置有上导 线横担、 中导线横担、 下导线横担， 上导线横担下安装有上导线绝缘 子串， 中导线绝缘子串上端与中导线横担相接， 下端与下导线横担相 接， 下导线横担下安装有下导线绝缘子串， 所述的中导线绝缘子串为 τ型。
所述的中导线绝缘子串包括上串、 下串、 柔性金具链， 由呈" I" 型的上串、 呈 "/"型的下串和底部的柔性金具链构成。
本实用新型采用 " i-J-i "布置方式， 上、 下相导线绝缘子串采 用 " I "型绝缘子串悬挂方式， 中导线绝缘子串采用 "J"型绝缘子串 悬挂方式， "J"串型主要是由呈 " I "型上串和呈 "/"型下串、 柔性 金具链构成， 上串与中导线横担连接， 柔性金具链与下导线横担相连 接， "J"串型可以有效减小悬垂绝缘子串的摇摆角， 从而减少杆塔头 部尺寸， 减少线路走廊宽度， 当风向朝向杆塔方向时， 上串保持铅垂 状态， 主要是由下串水平分力来抵消风荷载， 在此工况下， 上串主要 受导线的自重荷载和下串产生的垂直分力作用，下串主要受由风荷载 产生的水平分力和垂直分力， 当风向背向杆塔方向时， 上串的运动方 式为以中导线横担悬挂点为圆中心， 以上串长为半径， 上串下端导线 悬挂点沿圆弧向上摆动，由于下串与下导线横担之间采用柔性金具链 连接， 当上串摆动时， 下串及柔性金具链在导线悬挂点至下导线横担 连接点的轴线上长度可有效的縮短，使上串导线悬挂点向上沿圆弧轨 迹移动， 直至受到下串与柔性金具链长度无法伸长时的约束， 此时， 上串受到导线自重荷载， 风荷载及下串、 柔性金具链的拉力， 下串与 柔性金具链只受到由风荷载产生的拉力，从而有效减小导线悬垂串风 偏角度， 又可缩短中导线横担长度及降低中下相间横担的层间距。
本实用新型采用绝缘子串 " i-j-i "布置方式， 中导线绝缘子串 呈 " J" 串型， 在保证有效控制线路走廊宽度的同时， 解决了中导线 绝缘子串 "V" 串布置时杆塔中导线横担过长、 中导线与下导线间横 担层间距较大， 导致杆塔全高增加、钢材耗用量与基础工程量相应增 加， 经济性较差的缺点。
附图说明：
图 1为本实用新型的结构示意图；
图 2为中导线绝缘子串的放大图。
具体实施方式：
参照图 1-2，一种采用 " I- J-I " 串型的新型输电线路杆塔，它包 括塔身 1、 上导线横担 2、 中导线横担 3、 下导线横担 4、 上导线绝缘 子串 5、 中导线绝缘子串 6、 下导线绝缘子串 7， 塔身 1上分别设置 有上导线横担 2、 中导线横担 3、 下导线横担 4， 上导线横 2担下安 装有上导线绝缘子串 5，中导线绝缘子串 6上端与中导线横担 3相接， 下端与下导线横担 4相接,下导线横担 4下安装有下导线绝缘子串 7， 所述的中导线绝缘子串 6为 "J"型。
所述的中导线绝缘子串 6包括上串 8、 下串 9、 柔性金具链 10， 由呈 " I "型的上串 8、 呈 "/"型的下串 9和底部的柔性金具链 10 构成。
本实用新型采用 " I- J-I "布置方式， 上、 下相导线绝缘子串采 用 " I "型绝缘子串悬挂方式， 中导线绝缘子串采用 "J"型绝缘子串 悬挂方式， "J" 串型主要是由呈 " I"型上串和呈 "/"型下串、 柔性 金具链构成， 上串与中导线横担连接， 柔性金具链与下导线横担相连 接， "J"串型可以有效减小悬垂绝缘子串的摇摆角， 从而减少杆塔头 部尺寸， 减少线路走廊宽度， 当风向朝向杆塔方向时， 上串保持铅垂 状态， 主要是由下串水平分力来抵消风荷载， 在此工况下， 上串主要 受导线的自重荷载和下串产生的垂直分力作用，下串主要受由风荷载 产生的水平分力和垂直分力， 当风向背向杆塔方向时， 上串的运动方 式为以中导线横担悬挂点为圆中心， 以上串长为半径， 上串下端导线 悬挂点沿圆弧向上摆动，由于下串与下导线横担之间采用柔性金具链 连接， 当上串摆动时， 下串及柔性金具链在导线悬挂点至下导线横担 连接点的轴线上长度可有效的縮短，使上串导线悬挂点向上沿圆弧轨 迹移动， 直至受到下串与柔性金具链长度无法伸长时的约束， 此时， 上串受到导线自重荷载， 风荷载及下串、 柔性金具链的拉力， 下串与 柔性金具链只受到由风荷载产生的拉力，从而有效减小导线悬垂串风 偏角度， 又可缩短中导线横担长度及降低中下相间横担的层间距。
本实用新型采用绝缘子串 " i-j-i "布置方式， 中导线绝缘子串 呈 "J" 串型， 在保证有效控制线路走廊宽度的同时， 解决了中导线 绝缘子串 "V" 串布置时杆塔中导线横担过长、 中导线与下导线间横 担层间距较大， 导致杆塔全高增加、钢材耗用量与基础工程量相应增 加， 经济性较差的缺点。

Claims

1、 一种采用 " I- J- 1" 串型的新型输电线路杆塔， 它包括塔身 ( 1 )、 上导线横担 （2)、 中导线横担（3)、 下导线横担（4)、 上导线 绝缘子串（5)、中导线绝缘子串（6)、下导线绝缘子串（7)，塔身（1 ) 上分别设置有上导线横担 （2)、 中导线横担 （3)、 下导线横担 （4)， 上导线横（2)担下安装有上导线绝缘子串（5 )， 中导线绝缘子串（6) 上端与中导线横担 （3)相接， 下端与下导线横担 （4)相接， 下导线 横担 （4) 下安装有下导线绝缘子串 （7)， 其特征在于， 所述的中导 线绝缘子串 (6) 为 "r型。
2、根据权利要求 1所述的一种采用 " I-J-I" 串型的新型输电线 路杆塔， 其特征在于， 所述的中导线绝缘子串 （6) 包括上串 （8)、 下串 （9)、 柔性金具链 （10)， 由呈 " I"型的上串 （8)、 呈 "/"型 的下串 （9) 和底部的柔性金具链（10) 构成。
PCT/CN2013/000125 2012-07-19 2013-02-05 一种采用"i-j-i"串型的新型输电线路杆塔 WO2014012345A1 (zh)

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CN103972835A (zh) * 2014-03-24 2014-08-06 王力 一种采用v型组合串型的新型输电线路杆塔
CN105133909A (zh) * 2015-09-29 2015-12-09 中国能源建设集团湖南省电力设计院有限公司 一种山区抗上拔直线塔
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