CN105735731B - A kind of double T connection steel pipe poles in double loop - Google Patents

A kind of double T connection steel pipe poles in double loop Download PDF

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CN105735731B
CN105735731B CN201610257729.6A CN201610257729A CN105735731B CN 105735731 B CN105735731 B CN 105735731B CN 201610257729 A CN201610257729 A CN 201610257729A CN 105735731 B CN105735731 B CN 105735731B
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arm
cross
double
wire
steel pipe
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CN105735731A (en
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谢玉强
李文升
李铭
孙成
王义元
许晓明
崔艳昭
曲卫
孙少斌
吕镇
张屹
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State Grid Corp of China SGCC
Qingdao Power Supply Co of State Grid Shandong Electric Power Co Ltd
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State Grid Corp of China SGCC
Qingdao Power Supply Co of State Grid Shandong Electric Power Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02Structures made of specified materials
    • E04H12/08Structures made of specified materials of metal
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/24Cross arms
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00Overhead installations of electric lines or cables
    • H02G7/20Spatial arrangements or dispositions of lines or cables on poles, posts or towers

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)

Abstract

一种双回路双T接钢管杆,包括杆身,所述杆身由上到下依次设置有主回路上的四层双侧横担,其中第一层为地线横担,用于挂接地线,第二至第四层依次为上层导线横担、中层导线横担及下层导线横担,分别用于挂接主回路的上相、中相和下相导线;所述杆身还设置有至少三个双T接回路上的横担,由上到下依次为分支地线横担、分支导线上层跳线横担及分支导线下层跳线横担,所述至少三个双T接回路上的横担垂直于所述四层双侧横担所在的平面。

A double-circuit double-T-connected steel pipe pole, including a pole body. The pole body is sequentially provided with four layers of double-sided cross arms on the main circuit from top to bottom, wherein the first layer is a ground wire cross arm for hanging the ground. The second to fourth layers are the upper conductor cross arm, the middle conductor cross arm and the lower conductor cross arm respectively, which are respectively used to connect the upper phase, middle phase and lower phase conductors of the main circuit; the shaft is also provided with At least three cross arms on the double T connection circuit, from top to bottom are the branch ground wire cross arm, the branch wire upper jumper cross arm and the branch wire lower jumper cross arm, and the at least three double T connection circuits are The cross-arm is perpendicular to the plane where the four-layer double-sided cross-arm is located.

Description

一种双回路双T接钢管杆A double-circuit double-T connected steel pipe rod

技术领域technical field

本发明涉及高压输电线路架设领域,具体涉及一种双回路双T接钢管杆。The invention relates to the field of erection of high-voltage transmission lines, in particular to a double-circuit double-T connected steel pipe pole.

背景技术Background technique

随着经济的快速发展,输电线路的规模和密度也在不断加大,为了节约土地资源,高压输电线路中主干线多采用同塔(杆)双回架设,分支线T接于主干线路上,T接双回架空线路实现方式一般有两种:一是在现有双回架空线路下方新建一基双回路电缆T接钢管杆,然后利用电缆爬杆T接两侧回路;二是在现有双回架空线路下方新建一基常规双回路双T接钢管杆,然后利用跳线绕跳至T接回路。第一种方式,由于使用电缆,工程造价会有所提高,另外形成了架空电缆复合电力网络,既增加了电网运维难度和成本,又降低了电网运行可靠性;第二种方式,常规双回双T钢管杆是在常规双回路钢管杆四层主线横担的基础上,在T接方向与主线横担交替增加了四层T接横担,即一层主线横担、一层T接横担交替布置,由于常规双回双T钢管杆主线上层横担高度较高,为保证线路安全,往往需要对相邻现有杆塔进行加高改造,这样不仅增加了工程实施难度,也抬高了工程造价。With the rapid development of the economy, the scale and density of transmission lines are also increasing. In order to save land resources, the main lines of high-voltage transmission lines are often erected with double circuits on the same tower (pole), and the branch lines T are connected to the main line. There are generally two ways to realize the T-connected double-circuit overhead line: one is to build a base double-circuit cable T-connected to the steel pipe pole under the existing double-circuit overhead line, and then use the cable climbing pole to T-connect the circuits on both sides; Under the double-circuit overhead line, build a new base of conventional double-circuit double-T connection steel pipe pole, and then use the jumper wire to jump to the T-connection circuit. In the first way, due to the use of cables, the project cost will increase. In addition, an overhead cable composite power network is formed, which not only increases the difficulty and cost of power grid operation and maintenance, but also reduces the reliability of power grid operation; The double-T steel pipe pole is based on the four-layer main line cross-arm of the conventional double-circuit steel pipe pole. In the T-joint direction and the main line cross-arm, four-layer T-joint cross-arms are added alternately, that is, one layer of main line cross-arm and one layer of T-joint. The cross-arms are arranged alternately. Since the upper cross-arms on the main line of the conventional double-circuit and double-T steel pipe poles are high in height, in order to ensure the safety of the line, it is often necessary to heighten the adjacent existing pole towers. This not only increases the difficulty of project implementation, but also raises the project cost.

针对上述问题,中国专利申请CN104563577A公开了一种高压线路双T杆,该双T杆包括竖杆和避雷线支架、原线路上导线横担、中导线横担、下导线横担、双T线路上导线横担、中导线横担、下导线横担,在竖杆上从上往下呈对称状并间隔安装避雷线支架、原线路上导线横担、双T线路上导线横担、原线路中导线横担、双T线路中导线横担、原线路下导线横担和双T线路下导线横担,避雷线支架、原线路上导线横担、原线路中导线横担、原线路下导线横担与双T线路上导线横担、双T线路中导线横担、双T线路下导线横担呈十字交叉分布,使原线路保持原有排列方式不变,但线间垂直距离增加一倍,并在原线路横担垂直方向上设置横担以便线路引接至双T方向上,同回线路空中相连接,不同回路线路在空中相连接,不同回路线路在空中十字交叉,该方案虽然解决了用电缆爬杆T接两侧回路,降低了工程造价的问题,提高了电网运行可靠性,但由于在主线路原有排列方式不变的情况下,线间垂直距离增加了一倍,造成了上层横担高度增大,增大了钢管杆间导线的上拉力,为保证线路安全,需要对相邻现有杆塔进行加高改造,也增加了工程实施难度与工程造价成本。In response to the above problems, Chinese patent application CN104563577A discloses a double T-bar for high-voltage lines. The upper conductor crossarm, the middle conductor crossarm, and the lower conductor crossarm are symmetrical from top to bottom on the vertical pole and are installed with lightning protection wire brackets at intervals, the upper conductor crossarm of the original line, the upper conductor crossarm of the double T line, and the original line Cross arm of medium conductor, cross arm of medium conductor of double T line, cross arm of lower conductor of original line and cross arm of lower conductor of double T line, lightning protection wire support, cross arm of upper conductor of original line, cross arm of middle conductor of original line, lower conductor of original line The cross arm and the upper conductor cross arm of the double-T line, the middle conductor cross-arm of the double-T line, and the lower conductor cross-arm of the double-T line are distributed in a cross, so that the original arrangement of the original line remains unchanged, but the vertical distance between the lines is doubled , and set the cross arm in the vertical direction of the cross arm of the original line so that the line is connected to the double T direction, the same loop line is connected in the air, different loop lines are connected in the air, and different loop lines are crossed in the air. The cable climbing pole is T-connected to the loops on both sides, which reduces the cost of the project and improves the reliability of the power grid operation. However, since the original arrangement of the main lines remains unchanged, the vertical distance between the lines has doubled, resulting in the upper layer The height of the cross arm increases, which increases the upward tension of the wires between the steel pipe poles. In order to ensure the safety of the line, it is necessary to heighten the adjacent existing pole towers, which also increases the difficulty of project implementation and project cost.

发明内容Contents of the invention

因此,本发明要解决的技术问题在于克服现有技术中双回路双T接钢管杆横担间隙高度加大,使钢管杆间导线间的上拉力不断增大以及工程实施难度与工程造价成本增大的缺陷。Therefore, the technical problem to be solved by the present invention is to overcome the increase in the gap height of the cross-arm of the double-circuit double-T connected steel pipe poles in the prior art, which continuously increases the upward pulling force between the wires between the steel pipe poles and the difficulty of project implementation and the increase in project cost. Big flaw.

有鉴于此,本发明提供一种双回路双T接钢管杆,包括杆身,所述杆身由上到下依次设置有主回路上的四层双侧横担,其中第一层为地线横担,用于挂接地线,第二至第四层依次为上层导线横担、中层导线横担及下层导线横担,分别用于挂接主回路的上相、中相和下相导线;所述杆身还设置有至少三个双T接回路上的横担,由上到下依次为分支地线横担、分支导线上层跳线横担及分支导线下层跳线横担,所述至少三个双T接回路上的横担垂直于所述四层双侧横担所在的平面。In view of this, the present invention provides a double-circuit double-T connecting steel pole, which includes a shaft, and the shaft is sequentially provided with four layers of double-sided crossarms on the main circuit from top to bottom, wherein the first layer is the ground wire The cross arm is used to hang the grounding wire. The second to fourth layers are the upper layer wire cross arm, the middle layer wire cross arm and the lower layer wire cross arm, which are respectively used to connect the upper phase, middle phase and lower phase wires of the main circuit; The shaft is also provided with at least three cross-arms on the double T-connected circuit, which are the branch ground wire cross-arm, the branch wire upper-level jumper cross-arm and the branch wire lower-layer jumper cross-arm from top to bottom. The cross-arms on the three double T-connected circuits are perpendicular to the plane where the four-layer double-sided cross-arms are located.

进一步地,所述分支地线横担设置在所述钢管杆杆身的上端。Further, the branch ground wire cross arm is arranged on the upper end of the steel pipe shaft.

进一步地,所述分支导线上层跳线横担设置在所述地线横担与所述上层导线横担之间且靠近所述地线横担一侧。Further, the upper jumper cross-arm of the branch wire is arranged between the ground wire cross-arm and the upper-layer wire cross-arm and close to one side of the ground wire cross-arm.

进一步地,所述分支导线下层跳线横担设置在所述下层导线横担下方,靠近所述下层导线横担一侧。Further, the lower layer jumper cross-arm of the branch wire is arranged below the lower-layer wire cross-arm, close to one side of the lower-layer wire cross-arm.

进一步地,连接到所述钢管杆上的双T接回路地线通过所述分支地线横担、杆身及地线横担与主回路地线相连。Further, the ground wire of the double T connection circuit connected to the steel pipe pole is connected to the ground wire of the main circuit through the branch ground wire cross arm, the shaft and the ground wire cross arm.

进一步地,所述分支导线上层跳线横担与所述分支导线下层跳线横担之间通过绝缘子与导线组成垂直方向的分流母线。Further, an insulator and wires form a vertical shunt bus between the upper jumper cross-arm of the branch wire and the lower jumper cross-arm of the branch wire.

进一步地,连接到所述钢管杆上的主回路导线经跳线跳至所述垂直方向的分流母线上并通过所述分流母线经跳线连接所述双T接回路导线。Further, the main circuit wire connected to the steel pipe pole is jumped to the vertical shunt bus through a jumper wire, and connected to the double T-connected circuit wire through the shunt bus through a jumper wire.

本发明提供一种双回路双T接钢管杆,由钢管杆从上到下的四层双侧横担,依次分别挂接地线、上相导线、中相导线及下相导线,在所述四层双侧横担所在平面的垂直面内由上到下依次设置有至少三个横担,由上到下依次为分支地线横担、分支导线上层跳线横担及分支导线下层跳线横担,用于向双T接方向引出双T接回路,在保证各相导线安全距离的状态下,通过减少双T接方向的横担数量,最大程度降低双回高压线路双T接钢管杆主回路与双T接回路横担的高度,从而降低钢管杆间导线的上拉力、工程实施难度及工程造价成本。The present invention provides a double-circuit double-T connected steel pipe rod. The steel pipe rod is composed of four layers of double-sided cross-arms from top to bottom. There are at least three cross-arms arranged from top to bottom in the vertical plane of the plane where the cross-arms on both sides of the layer are located. It is used to lead out the double T connection circuit in the direction of double T connection. Under the state of ensuring the safe distance of each phase wire, by reducing the number of cross arms in the direction of double T connection, the main force of the double T connection steel pipe pole of the double circuit high voltage line can be reduced to the greatest extent. The height of the loop and the cross arm of the double T connection loop can reduce the upward tension of the wires between the steel pipe poles, the difficulty of project implementation and the cost of project cost.

附图说明Description of drawings

为了使本发明的内容更容易被清楚的理解,下面根据本发明的具体实施例并结合附图,对本发明作进一步详细的说明,其中In order to make the content of the present invention more easily understood, the present invention will be described in further detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein

图1是本发明实施例提供的一种双回路双T接钢管杆主回路主视图;Fig. 1 is a front view of the main circuit of a double-circuit double-T connected steel pipe rod provided by the embodiment of the present invention;

图2是本发明实施例提供的一种双回路双T接钢管杆T接回路主视图;Fig. 2 is a front view of a T-connection circuit of a double-circuit double-T-connected steel pipe rod provided by an embodiment of the present invention;

图3是本发明实施例提供的一种双回路双T接钢管杆平面示意图;Fig. 3 is a schematic plan view of a double-circuit double-T connected steel pipe rod provided by an embodiment of the present invention;

图4是图3中一种双回路双T接钢管杆的A区域细节放大示意图。Fig. 4 is an enlarged schematic diagram of the details of area A of a double-circuit double-T-connected steel pipe pole in Fig. 3 .

具体实施方式Detailed ways

本发明实施例提供一种双回路双T接钢管杆,如图1所示,包括杆身1、地线横担2、上层导线横担3、中层导线横担4、下层导线横担5、分支地线横担6、分支导线上层跳线横担7以及分支导线下层跳线横担8,The embodiment of the present invention provides a double-circuit double-T connected steel pipe pole, as shown in Fig. Branch ground cross arm 6, branch wire upper jumper cross arm 7 and branch wire lower jumper cross arm 8,

其中,钢管杆主回路上的四层双侧横担,地线横担2用于挂接地线,起到避雷作用,上层导线横担3用于挂接上相导线,中层导线横担4用于挂接中相导线,下层导线横担5用于挂接下相导线,在所述四层双侧横担所在平面的垂直面内由上到下依次设置有双T接回路上的至少三个横担,由上到下依次为分支地线横担6、分支导线上层跳线横担7及分支导线下层跳线横担8,所述主回路上的四层双侧横担与所述双T接回路上的至少三个横担呈空间垂直分布。Among them, the four-layer double-sided cross arm on the main circuit of the steel pipe pole, the ground wire cross arm 2 is used to hang the ground wire, and plays the role of lightning protection, the upper layer wire cross arm 3 is used to connect the upper phase wire, and the middle layer wire cross arm 4 is used For hooking the middle-phase wire, the lower-layer wire crossarm 5 is used for hooking the lower-phase wire. In the vertical plane of the plane where the four-layer double-side crossarm is located, at least three double T-connected loops are sequentially arranged from top to bottom. A cross arm, from top to bottom is the branch ground wire cross arm 6, the branch wire upper layer jumper cross arm 7 and the branch wire lower layer jumper cross arm 8, the four-layer double-side cross arm on the main circuit is connected with the described At least three cross-arms on the double T-connection circuit are vertically distributed in space.

本实施例提供的双回路双T接钢管杆,在保证各相导线安全距离的状态下,减少双T接方向的横担数量,降低双回高压线路双T钢管杆横担高度,从而降低了工程实施难度、钢管杆间高压导线的上拉力,节约了工程造价成本。The double-circuit double-T steel pipe pole provided in this embodiment reduces the number of cross-arms in the double-T-connection direction and reduces the height of the double-T steel pipe pole cross-arm for double-circuit high-voltage lines while ensuring the safe distance of the conductors of each phase. The difficulty of project implementation and the upward tension of the high-voltage wires between the steel pipe poles save the cost of the project.

优选地,所述分支地线横担6设置在所述钢管杆杆身1的上端,所述分支导线上层跳线横担7设置在所述地线横担2与所述上层导线横担3之间且靠近所述地线横担2一侧,所述分支导线下层跳线横担8设置在所述下层导线横担5下方,靠近所述下层导线横担5一侧。Preferably, the branch ground wire cross arm 6 is arranged on the upper end of the steel pipe shaft 1, and the branch wire upper layer jumper wire arm 7 is arranged between the ground wire cross arm 2 and the upper layer wire cross arm 3 Between and close to the side of the ground wire cross-arm 2 , the lower jumper cross-arm 8 of the branch wire is arranged below the lower-layer wire cross-arm 5 and close to the side of the lower-layer wire cross-arm 5 .

具体地,结合图1、图2所示,本实施例设置的各横担水平长度和垂直距离均处于高压线路通电的安全阈度内,主回路方向与双T接回路方向的横担在考虑通电安全及钢管杆杆身1高度的情况下,主回路上层导线横担3、中层导线横担4与下层导线横担5之间的间距设置与现有主回路钢管杆导线横担间距相同;双T接回路方向的各横担,由于地线不带电,故地线横担2与分支地线横担6的间距没有限制,只要保证地线横担2与分支地线横担6空间位置相对垂直即可,地线横担2与分支导线上层跳线横担7的距离同样不限高度只要保证空间位置相对垂直,分支导线下层跳线横担8与下层导线横担5的间距处于所述钢管杆主线回路的呼称高范围内,即处于钢管杆的下层导线横担5与杆身1底部距离的范围内,故分支导线下层跳线横担8与下层导线横担5的距离不会影响本实施例钢管杆主线横担的高度,本实施例优选分支导线下层跳线横担8与下层导线横担5的距离为3.5m;分支导线上层跳线横担7与上层导线横担3的间距因电压等级差异或其他因素而有所差异,为了高压线路通电安全及主回路导线可以经过跳线准确跳到分流母线上,同时可以降低钢管杆横担的高度,减小钢管杆间导线的上拉力,本实施例在电压等级为110kv的电压等级时优选2.5m。Specifically, as shown in Figure 1 and Figure 2, the horizontal length and vertical distance of each cross-arm set in this embodiment are all within the safety threshold of high-voltage line energization, and the cross-arms in the direction of the main circuit and the direction of the double-T connection circuit are considered In the case of electrification safety and the height of the steel pipe pole shaft 1, the distance between the upper conductor cross arm 3, the middle conductor cross arm 4 and the lower conductor cross arm 5 of the main circuit is set to be the same as the existing main circuit steel pipe pole conductor cross arm spacing; For each cross arm in the direction of the double T connection circuit, since the ground wire is not charged, there is no limit to the distance between the ground wire cross arm 2 and the branch ground wire cross arm 6, as long as the space position of the ground wire cross arm 2 and the branch ground wire cross arm 6 is relatively opposite Just be vertical, the distance between the ground wire cross arm 2 and the upper layer jumper cross arm 7 of the branch wire is also not limited to the height as long as the space position is relatively vertical, and the distance between the lower layer jumper cross arm 8 of the branch wire and the lower layer wire cross arm 5 is within the above-mentioned It is within the range of the nominal height of the main line circuit of the steel pipe pole, that is, within the range of the distance between the lower conductor crossarm 5 of the steel pipe pole and the bottom of the shaft 1, so the distance between the lower jumper crossarm 8 of the branch conductor and the lower conductor crossarm 5 will not affect The height of the cross arm of the main line of the steel pipe rod in this embodiment, the distance between the lower jumper cross arm 8 of the branch wire and the lower wire cross arm 5 in this embodiment is 3.5m; The spacing varies due to differences in voltage levels or other factors. For the safety of high-voltage lines and the main circuit conductors can accurately jump to the shunt bus through the jumper wires. The pull-up force, in this embodiment, is preferably 2.5m when the voltage level is 110kv.

本发明实施例提供的双回路双T接钢管杆,保证各通电线路在安全阈度的情况下,通过减小双T接回路方向各横担的整体高度,降低了主线方向钢管杆间导线的上拉力与工程实施难度与工程造价成本。The double-circuit double-T connection steel pipe pole provided by the embodiment of the present invention ensures that each energized line is at a safe threshold, and by reducing the overall height of each cross-arm in the direction of the double-T connection circuit, the distance between the wires between the steel pipe poles in the main line direction is reduced. The upper pull force and the difficulty of project implementation and the cost of project cost.

优选地,如图3所示,图4是图3的A区域局部放大图,主回路钢管杆13与主回路钢管杆14之间通过主回路双回线路的上相、中相与下相导线18、19、20、21、22、23相连形成需T接的主回路双回线路,双T接回路钢管杆11与钢管杆12同样通过导线连接形成双T接方向的回路。所述双T接回路地线通过所述分支地线横担6、杆身1及地线横担2与主回路地线相连,保证地线的电气贯通,所述分支导线上层跳线横担7与所述分支导线下层跳线横担8之间通过绝缘子17与导线组成垂直方向的分流母线9,主回路导线18、19、20、21、22、23经跳线15分别跳至所述垂直方向的单根分流母线9上,通过所述分流母线经跳线连接所述双T接回路导线引出双回T接线路。Preferably, as shown in FIG. 3 , FIG. 4 is a partial enlarged view of area A in FIG. 3 , between the main circuit steel pipe rod 13 and the main circuit steel pipe rod 14 passing through the upper phase, middle phase and lower phase conductors of the main circuit double circuit line 18, 19, 20, 21, 22, 23 are connected to form a main circuit double-circuit line that requires T connection, and the double T connection loop steel pipe pole 11 and steel pipe pole 12 are also connected by wires to form a double T connection direction loop. The ground wire of the double T connection circuit is connected to the ground wire of the main circuit through the branch ground wire cross arm 6, the shaft 1 and the ground wire cross arm 2 to ensure the electrical connection of the ground wire. 7 and the jumper crossarm 8 of the lower layer of the branch wire form a shunt bus 9 in the vertical direction through the insulator 17 and the wire, and the main circuit wires 18, 19, 20, 21, 22, 23 jump to the above-mentioned On the single shunt busbar 9 in the vertical direction, the double T-connection circuit is drawn out by connecting the double-T-connection circuit wires through the said shunt-busbar via a jumper wire.

具体地,分流母线由上、下绝缘子与导线连接构成,分流母线数量可以为3根或者6根,根据不同高压输电线路的要求,例如,若为T接单回,可以设置分流母线的数量为3根,从钢管杆受力均匀考虑,可以在钢管杆两侧分别设置两根分流母线与一根分流母线;若为T接双回,则需设置6根分流母线,钢管杆两侧各设置三根分流母线以保证受力均匀,每侧的分流母线分别经跳线连接一个主回路的相位导线,在不考虑成本的情况下,设置6根分流母线的钢管杆同样可以利用其中3根用来T接单回线路,本实施例优选钢管杆设置6根分流母线形式。如图2所示,在钢管杆上设置有6根分流母线,分别对称分布在杆身1两侧,为了保证双T接回路导线之间通电的安全,保证通电导线间距,本实施例优选连接方式为:6根分流母线从左到右,分别经跳线连接主回路导线20、19、18、23、22、21,继而经跳线连接所述双T接回路导线。Specifically, the shunt busbar is composed of upper and lower insulators connected with wires, and the number of shunt busbars can be 3 or 6. According to the requirements of different high-voltage transmission lines, for example, if it is a T-connection single circuit, the number of shunt busbars can be set as 3, in consideration of the uniform stress of the steel pipe pole, two shunt busbars and one shunt busbar can be installed on both sides of the steel pipe pole; Three shunt busbars are used to ensure uniform stress. The shunt busbars on each side are respectively connected to the phase wires of a main circuit through jumpers. Without considering the cost, the steel pipe poles with 6 shunt busbars can also use 3 of them for T is connected to a single-circuit line. In this embodiment, steel pipe poles are preferably provided with 6 shunt busbars. As shown in Figure 2, there are 6 shunt busbars arranged on the steel pipe pole, which are symmetrically distributed on both sides of the pole body 1 respectively. The method is as follows: 6 shunt bus bars are connected to the main circuit wires 20, 19, 18, 23, 22, and 21 via jumper wires from left to right, and then connected to the double-T circuit wires via jumper wires.

上述实施例提供的双回路双T接钢管杆,在保证高压线路通电安全的前提下,减少双T接回路方向的横担数量,降低了钢管杆的高度及主回路钢管杆导线间由于钢管杆高度增大的而产生导线上拉力,提高了电网运行的可靠性。The double-circuit double-T connected steel pipe pole provided by the above-mentioned embodiment reduces the number of cross-arms in the direction of the double-T connected circuit under the premise of ensuring the safety of the high-voltage line, reduces the height of the steel pipe pole and the steel pipe pole between the main circuit steel pipe pole conductors. The increased height results in a pull-up force on the conductor, which improves the reliability of the power grid operation.

显然,上述实施例仅仅是为清楚地说明所作的举例,而并非对实施方式的限定。对于所属领域的普通技术人员来说,在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本发明创造的保护范围之中。Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the scope of protection of the present invention.

Claims (5)

1. a kind of double T connection steel pipe poles in double loop, which is characterized in that including shaft, the shaft is disposed with master from top to bottom Four layers of bilateral cross-arm on circuit, wherein first layer are ground wire cross-arm, are used for hanging earthing conductor, second to the 4th layer is followed successively by upper layer Conducting wire cross-arm, middle layer conductor cross-arm and lower layer conductor cross-arm are respectively used to upper phase, middle phase and the lower phase conductor of mounting major loop;
The shaft is additionally provided with the cross-arm that at least three couples of T take back road, is followed successively by branch's ground wire cross-arm, branch from top to bottom Conducting wire upper layer wire jumper cross-arm and offset lower layer wire jumper cross-arm, at least three couples of T take back the cross-arm of road perpendicular to institute The plane where four layers of bilateral cross-arm is stated, branch's ground wire cross-arm is arranged in the upper end of the rod body of steel pipe rod, the branch Conducting wire upper layer wire jumper cross-arm is arranged between the ground wire cross-arm and the topping wire cross-arm and close to the ground wire cross-arm one Side.
2. the double T connection steel pipe poles in double loop according to claim 1, which is characterized in that offset lower layer wire jumper is horizontal Load is arranged below the lower layer conductor cross-arm, close to the lower layer conductor cross-arm side.
3. the double T connection steel pipe poles in double loop according to claim 2, which is characterized in that the double T being connected on the steel pipe pole Loop ground is connect by branch's ground wire cross-arm, shaft and ground wire cross-arm to be connected with major loop ground wire.
4. the double T connection steel pipe poles in double loop according to claim 3, which is characterized in that offset upper layer wire jumper is horizontal The shunting busbar of vertical direction is made up of between load and the offset lower layer wire jumper cross-arm insulator and conducting wire.
5. the double T connection steel pipe poles in double loop according to claim 4, which is characterized in that the master being connected on the steel pipe pole Return wire skips on the shunting busbar of the vertical direction through wire jumper and connects double T through wire jumper by the shunting busbar and takes back Line conductor.
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