WO2020220896A1 - 防风偏横担及输电塔 - Google Patents

防风偏横担及输电塔 Download PDF

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Publication number
WO2020220896A1
WO2020220896A1 PCT/CN2020/081964 CN2020081964W WO2020220896A1 WO 2020220896 A1 WO2020220896 A1 WO 2020220896A1 CN 2020081964 W CN2020081964 W CN 2020081964W WO 2020220896 A1 WO2020220896 A1 WO 2020220896A1
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WO
WIPO (PCT)
Prior art keywords
insulator
tower
cross arm
wind
angle
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PCT/CN2020/081964
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English (en)
French (fr)
Inventor
马斌
黄清
郁杰
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上海神马电力工程有限公司
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Application filed by 上海神马电力工程有限公司 filed Critical 上海神马电力工程有限公司
Publication of WO2020220896A1 publication Critical patent/WO2020220896A1/zh

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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
    • E04H12/24Cross 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

Definitions

  • This application relates to the technical field of power transmission insulation equipment, in particular to wind-proof cross arm and power transmission tower.
  • composite insulators are mainly used for wind-proof cross-arms, which mainly have the following problems: 1. Wind-proof cross-arms must be installed or modified after power outage, and there is no wind-proof composite insulation cross-arm that can be installed on-line and put into engineering application in China; 2. Under extreme typhoon conditions, because the high-pressure end of the existing wind-proof cross-arm cannot be fixed, the long-length wind-proof cross-arm has the risk of excessive deformation or breaking; 3. Because the high-pressure end of the traditional wind-proof cross-arm cannot be fixed, it cannot be fixed. Control the maximum wind deflection angle of the wire, there is a hidden electrical safety hazard in the wind deflection of the wire under typhoon conditions.
  • the main technical problem solved by this application is to provide a wind-proof cross arm and a power transmission tower, which can solve the problems that the wind-proof insulator cannot be installed with electricity and the high-voltage terminal cannot be fixed.
  • a technical solution adopted in this application is to provide a wind-proof cross arm, which includes: a pillar insulator, one end of which is used to connect to the tower body of the iron tower; The other end of the iron cross arm is connected to the other end of the post insulator away from the iron tower, so that a stable support structure with an included angle is formed between the diagonal insulator and the post insulator; wherein, the post insulator And the diagonal insulator is located between the wire and the iron tower to prevent the wire from approaching the iron tower.
  • it further includes: a connecting clamp, and the one end of the pillar insulator and the one end of the diagonal insulator are respectively connected to the iron tower through a connecting clamp.
  • the connecting fixture includes: two right-angle plates, which are symmetrically sandwiched at the angle steel of the iron tower, one of the right-angle plates is attached to the inner side wall of the angle steel, and the other is attached to the angle steel.
  • One side of the outer wall is arranged, and the two right-angled plates are fixed by fasteners;
  • the flat plate is arranged to fit the other outer wall of the angle steel, and is respectively fixed with the two right-angled plates by the fasteners;
  • the flat plate and A space is formed between the other right-angled plates to connect the one end of the post insulator or the one end of the diagonal insulator.
  • a Y-shaped fitting is connected to the one end of the diagonal insulator, a right-angle hanging ring or a right-angle hanging plate is clamped and fixed between the right-angle plate and the flat plate, and the Y-shaped fitting is connected to the right-angle hanging The ring or the right-angle hanging plate is interlocked.
  • a connecting piece is connected to the one end of the post insulator, and the connecting piece is clamped and fixed between the right-angle plate and the flat plate.
  • the other end of the post insulator far away from the iron tower is connected with a flat foot fitting, and the other end of the diagonal insulator is connected with a slot fitting; or, the post insulator is away from the iron tower
  • the other end is connected with a slot fitting, and the other end of the diagonal insulator is connected with a flat foot fitting; the flat foot fitting is hinged to the slot fitting.
  • another technical solution adopted in this application is to provide a power transmission tower which adopts the above-mentioned wind-proof cross arm, and at least one set of the wind-proof cross arm is provided on the power transmission tower.
  • the wind-proof cross arm is provided with at least two groups, which are symmetrically arranged on both sides of the power transmission tower to prevent the wire from approaching the power transmission tower.
  • the wind-proof deflection cross arm is provided with at least two groups, and they are symmetrically arranged on both sides of the iron cross arm along the wire direction.
  • the wind deflecting cross arm is offset to a side away from the iron cross arm, so that an acute angle is formed between the wind deflecting cross arm and the vertical plane.
  • the beneficial effect of this application is that, different from the prior art, the cable-stayed insulator and the post insulator are respectively connected to the iron tower, and a stable support structure with an included angle is formed between the two, so that in extreme typhoon weather, the wires follow
  • the wind-proof cross arm When the wind swings and collides with the wind-proof cross arm, it can effectively absorb energy, the wind-proof cross arm is not easy to deform or break, and the maximum wind swing angle of the wire can be controlled, which can effectively prevent the wind flashover accident caused by the wire close to the tower due to the wind swing.
  • the pillar insulators and the diagonal insulators are not directly connected to the wires, but are set between the tower and the wires, so that when the grid is live, the wind-proof cross arm can be installed or modified directly on the tower, without the need for power outage operations, to the grid customers Bring huge market value.
  • Fig. 1 is a schematic diagram of a three-dimensional structure of an embodiment of the windproof cross arm of the present application
  • Fig. 2 is an enlarged schematic diagram of part A in Fig. 1;
  • Figure 3 is an enlarged schematic diagram of part B in Figure 1;
  • Fig. 4 is a schematic diagram of an enlarged structure of part C in Fig. 1;
  • Fig. 5 is a three-dimensional structure diagram of an embodiment of the power transmission tower of the present application.
  • Figure 1 is a schematic view of the three-dimensional structure of an embodiment of the wind-proof cross arm of the present application
  • Figure 2 is an enlarged schematic view of part A in Figure 1
  • Figure 3 is an enlarged view of part B in Figure 1
  • Figure 4 is a schematic diagram of the enlarged structure of part C in Figure 1.
  • An embodiment of the present application provides a wind-proof deflection cross arm 10, which includes a post insulator 11 and a cable-stayed insulator 12.
  • the iron tower 01 includes a tower body 011 and an iron cross arm 012 horizontally connected above the tower body 011.
  • One end of the pillar insulator 11 is used to connect the tower body 011 of the iron tower 01
  • one end of the diagonal insulator 12 is used to connect the iron cross arm 012 of the iron tower 01.
  • the other end is connected to the other end of the pillar insulator 11 away from the iron tower 01, so that a stable bracket structure with an included angle is formed between the diagonal insulator 12 and the pillar insulator 11.
  • the included angle is an acute angle or a right angle, of course, it can also be an obtuse angle, which is not limited here.
  • the post insulator 11 and the diagonal insulator 12 are located between the conductor 02 and the iron tower 01 to prevent the conductor 02 from approaching the tower 01.
  • the tower body 011 and the iron cross arm 012 are simplified and shown.
  • the iron tower 01 is a common truss structure iron tower in the art, which will not be repeated here.
  • the diagonal insulator 12 and the pillar insulator 11 are respectively connected to the iron tower 01, and a stable support structure with an included angle is formed between the two, so that in extreme typhoon weather, the windproof cross arm 10 is not easy to deform Or broken, the wire 02 can be effectively supported when it swings with the wind to collide with the wind-proof cross arm 10, and the maximum wind swing angle of the wire 02 can be controlled, which can effectively curb the wind flashover accident caused by the wire 02 close to the tower 01 due to the wind swing , To ensure a safe electrical gap between the conductor 02 and the iron tower 01 under strong wind conditions.
  • the pillar insulator 11 and the diagonal insulator 12 are not directly connected to the conductor 02, but are arranged between the iron tower 01 and the conductor 02, so that when the power grid is live, the wind-proof cross arm 10 can be directly installed or modified on the iron tower 01. There is no need for power outage operation, which brings huge market value to grid customers.
  • the post insulator 11 and the cable-stayed insulator 12 may both be connected to the iron cross arm 012 of the iron tower 01 or may also be connected to the tower body 011 of the iron tower 01, and an angle is formed between the two The stable support structure.
  • the windproof cross arm 10 further includes a connecting clamp 13, and one end of the pillar insulator 11 and one end of the diagonal insulator 12 are respectively connected to the iron tower 01 through the connecting clamp 13.
  • the connecting fixture 13 includes two right-angled plates 131 and a flat plate 132.
  • the two right-angled plates 131 are symmetrically sandwiched at the angle steel of the iron tower 01.
  • One right-angled plate 131 is attached to the inner side wall of the angle steel, and the other right-angled plate 131 is attached to the angle steel.
  • the two right-angled plates 131 are fixed by fasteners (not shown in the figure).
  • the flat plate 132 is attached to the outer wall of the other side of the angle steel, and is fixed with the two right-angled plates 131 by fasteners.
  • the connecting clamp 13 fixes the post insulator 11 and the diagonal insulator 12 on the iron tower 01 by clamping, without drilling holes in the iron tower 01, and can ensure that the connecting fixture 13 is connected to different tower 01
  • the fastener may be a bolt or other parts used for fastening, and other common connection methods such as welding or glueing may also be used.
  • the connecting piece 111 is a plate-shaped connecting piece, and after the connecting piece 111 is clamped between the right-angled plate 131 and the flat plate 132, it can be fixed by common connection methods such as welding, glue connection, and bolted connection.
  • a Y-shaped fitting 121 is connected to one end of the diagonal insulator 12, a right-angle hanging ring 122 is clamped and fixed between the right-angle plate 131 and the flat plate 132, and the Y-shaped fitting 121 and the right-angle hanging ring 122 are interlocked and arranged. Since the Y-shaped fitting 121 and the right-angle hanging ring 122 have a ring-to-ring articulated structure, they have a higher degree of freedom, and can effectively solve the problem that the wind deflector cross arm 10 needs to be installed out of the plane. In addition, the higher degree of freedom makes the diagonal-stayed insulator 12 of a specific length have the characteristics of being universal within a certain length of space.
  • the right-angle hanging ring 122 can be a ZH right-angle ring or other types of right-angle hanging ring 122. In other embodiments, the right-angle hanging ring 122 can also be replaced by a right-angle hanging plate, which is not limited here.
  • the cable-stayed insulator 12 and the iron tower 01 may be fixedly connected, and the post insulator 11 and the iron tower 01 may be connected by a degree of freedom, which is not limited here.
  • the other end of the post insulator 11 away from the iron tower 01 is connected with a flat foot fitting 112
  • the other end of the diagonal insulator 12 is connected with a slot fitting 123
  • the flat foot fitting 112 and the slot fitting 123 are hinged
  • the post insulator 11 and the diagonal stay The insulator 12 is hinged through the flat-foot fitting 112 and the slot fitting 123.
  • it can effectively solve the problem of installation misalignment caused by the in-plane and out-of-plane angle deviation during the installation process, and on the other hand, it can effectively buffer the wind deviation wire 02 pair of diagonal insulators 12
  • the impact function of the cable protects the 12-core rod of the diagonal insulator.
  • the other end of the pillar insulator 11 away from the iron tower 01 is connected to the slot fitting 123
  • the other end of the diagonal insulator 12 is connected to the flat foot fitting 112
  • the flat angle fitting and the slot fitting 123 are hinged. The place is not limited.
  • Both the post insulator 11 and the cable-stayed insulator 12 are made of composite materials and have the characteristics of light weight, simple structure, convenient installation, and good insulation performance.
  • the post insulator 11 and the cable-stayed insulator 12 both include an insulator located inside and a rubber umbrella skirt covering the insulator.
  • the insulator may be an insulating tube or an insulating core rod.
  • the insulating tube can be a glass fiber-impregnated epoxy resin winding and curing glass steel pipe, or an aramid fiber-impregnated epoxy resin winding and curing aramid fiber tube;
  • the insulating core rod can be glass fiber or aramid fiber impregnated with epoxy resin
  • the rubber umbrella skirt can be made of high-temperature vulcanized silicon rubber, or other forms of rubber materials.
  • the pillar insulator 11 and the cable-stayed insulator 12 may also be other composite materials, which are not limited here.
  • the diagonal insulator 12 and the pillar insulator 11 are respectively connected to the iron tower 01, and a stable support structure with an included angle is formed between the two, so that in extreme typhoon weather, it is not easy to prevent the wind from the cross arm 10 Deformed or broken, the wire 02 can be effectively supported when it swings with the wind and collides with the wind-proof cross arm 10, and the maximum wind swing angle of the wire 02 can be controlled, which can effectively prevent the wind flashover accident caused by the wind pendulum of the wire 02 and the iron tower 01 close to it.
  • the pillar insulator 11 and the diagonal insulator 12 are not directly connected to the conductor 02, but are arranged between the iron tower 01 and the conductor 02, so that when the power grid is live, the wind-proof cross arm 10 can be directly installed or modified on the iron tower 01. There is no need for power outage operation, which brings huge market value to grid customers.
  • one end of the post insulator 11 and one end of the cable-stay insulator 12 are respectively connected to the iron tower 01 through the connecting fixture 13, without drilling holes in the iron tower 01, which does not affect the strength of the iron tower 01 itself, and can ensure that the connecting fixture 13 is connected to different iron tower 01 The versatility and convenience of the installation part.
  • the pillar insulator 11 and the iron tower 01 are fixedly connected, on the one hand, it can effectively ensure the supporting force transmission function of the pillar insulator 11 in the windproof crossarm 10, and on the other hand, it can ensure that the windproof crossarm 10 is in the direction of gravity. Stability in the vertical plane.
  • the connection between the diagonal insulator 12 and the iron tower 01 has a high degree of freedom, which can effectively solve the problem that the wind-proof cross arm 10 needs to be installed out of the plane.
  • the higher degree of freedom makes the diagonal-stayed insulator 12 of a specific length have the characteristics of being universal within a certain length of space.
  • the higher degree of freedom increases the horizontal installation range of the connecting clamp 13 on the iron crossarm 012, which is effective Avoid the original 01 connecting nodes of the iron tower to increase versatility.
  • the post insulator 11 and the diagonal insulator 12 are hinged by the flat foot fitting 112 and the slot fitting 123. On the one hand, it can effectively solve the problem of installation misalignment caused by the in-plane and out-of-plane angle deviation during the installation process, and on the other hand, it can effectively buffer the wind deviation wire 02
  • the impact on the diagonal insulator 12 can protect the core rod of the diagonal insulator 12.
  • the wind-proof deflection cross arm 10 of the present application can be effectively applied to the tensile section of the engineering line, especially the tensile jumper at the outer corner of the corner tower, and solves the problem of large wind swing of the conductor under strong wind conditions.
  • FIG. 5 is a three-dimensional structure diagram of an embodiment of the power transmission tower of the present application.
  • An embodiment of the present application provides a power transmission tower 20.
  • the power transmission tower 20 is installed with a wind-proof deflection cross arm 10, and the wind-proof deflection cross arm 10 is any of the above-mentioned wind-proof deflection cross arm 10.
  • the power transmission tower 20 is provided with at least one set of wind-proof cross-arms 10, and each set of wind-proof cross-arms 10 includes pillar insulators 11 and diagonal insulators 12 to prevent the conductor 02 from approaching the tower body 011 under wind deviation.
  • the wind-proof cross arm 10 is provided with at least two groups, and they are symmetrically arranged on both sides of the power transmission tower 20 to block the wires 02 on both sides of the power transmission tower 20 from approaching the power transmission tower 20 respectively.
  • the wind-proof cross arm 10 is provided with two, four or more groups, and each side is provided with one, two or more groups.
  • the wind-proof cross arm 10 may only be arranged on the side of the power transmission tower 20 where the wire 02 is arranged.
  • the wind deflecting cross arm 10 can effectively prevent the conductor 02 from approaching the transmission tower 20, and the wind deflecting cross arm 10 of at least two groups can share the impact force of the wind deflecting conductor 02 to improve the overall pressure resistance.
  • the wind-proof cross arm 10 is provided with two groups. In other embodiments, there may be three, four or more groups.
  • the wind deflecting cross arm 10 along the vertical downward direction is offset to the side away from the iron cross arm 012, so that an acute angle is formed between the wind deflecting cross arm 10 and the vertical plane.
  • the acute angle formed between the wind deflector cross arm 10 and the vertical plane is 0-30 degrees, such as 0 degrees, 15 degrees, 30 degrees, and so on.
  • a wedge-shaped adjusting plate can be set at the connecting fixture to adjust the angle. By arranging the wedge-shaped adjusting plate, it is possible to flexibly select whether the wind-proof deflection cross arm 10 is deviated out of the plane and the deflection angle according to the actual working conditions, which is more versatile.
  • the pillar insulator 11 is connected to the first angle steel vertically arranged outside the tower body, and the diagonal insulator 12 is connected to the second angle steel of the iron cross arm 012.
  • the second angle steel is arranged horizontally and connected to the conductor 02.
  • the extension direction is set vertically.
  • the tower body 011 of the iron tower 01 has a certain taper, and the whole is in a state of being large and small, so that the plane formed by the second angle steel on the iron cross arm 012 and the first angle steel on the tower body is not a vertical plane. , But there is an angle with the vertical plane, which is generally an acute angle.
  • the wind deflected insulator When the traditional wind deflected cross arm is installed, the wind deflected insulator is usually directly set in the vertical plane, which causes the wind deflected insulator itself to be permanently connected to the tower body and the iron cross arm and always bear the stress, which is easy to deform or break. Ensure reliable wind prevention effect.
  • Y-shaped fittings and connecting fittings are provided with a high degree of freedom, so that an acute angle is formed between the wind-proof cross arm 10 and the vertical plane, which is similar or consistent with the above-mentioned included angle, thereby avoiding The post insulator 11 and the diagonal insulator 12 are deformed or broken under stress, thereby ensuring a reliable anti-wind deflection effect.
  • the diagonal insulator 12 and the post insulator 11 are respectively connected to the iron tower 01, and a stable support structure with an included angle is formed between the two, so that in extreme typhoon weather, the wind-proof cross arm 10 is not easy to deform or break , And can control the maximum wind swing angle of the wire 02, effective support can be obtained when the wire 02 swings with the wind and collides with the wind-proof cross arm 10, which effectively prevents the wind flashover accident caused by the wire 02 close to the tower 01 due to the wind swing, and ensures the high wind The safe electrical clearance between the conductor 02 and the tower under working conditions.
  • the pillar insulator 11 and the diagonal insulator 12 are not directly connected to the conductor 02, but are arranged between the iron tower 01 and the conductor 02, so that when the power grid is live, the wind-proof cross arm 10 can be directly installed or modified on the iron tower 01. There is no need for power outage operation, which brings huge market value to grid customers.
  • one end of the pillar insulator 11 and one end of the diagonal insulator 12 are respectively connected to the tower 01 through a connecting clamp, without drilling holes in the tower 01, which does not affect the strength of the tower 01 itself, and can ensure that the connecting clamps are installed at different tower 01 installation positions Versatility and convenience.
  • the pillar insulator 11 and the iron tower 01 are fixedly connected, on the one hand, it can effectively ensure the supporting force transmission function of the pillar insulator 11 in the windproof crossarm 10, and on the other hand, it can ensure that the windproof crossarm 10 is in the direction of gravity. Stability in the vertical plane.
  • the connection between the diagonal insulator 12 and the iron tower 01 has a high degree of freedom, which can effectively solve the problem that the wind-proof cross arm 10 needs to be installed out of the plane.
  • the higher degree of freedom makes the diagonal-stayed insulator 12 of a specific length have the characteristics of being universal within a certain length of space.
  • the higher degree of freedom increases the horizontal installation range of the connecting clamp on the iron cross arm 012, which can effectively avoid Open the original iron tower 01 connection node to increase versatility.
  • the post insulator 11 and the diagonal insulator 12 are hinged by the flat-leg fittings and the slot fittings. On the one hand, it can effectively solve the problem of installation misalignment caused by the in-plane and out-of-plane angle deviation during the installation process, and on the other hand, it can effectively buffer the wind deviation wire 02 pair
  • the impact effect of the diagonal insulator 12 plays a role in protecting the core rod of the diagonal insulator 12.
  • the wind-proof deflection cross arm 10 of the present application can be effectively applied to the tensile section of the engineering line, especially the tensile jumper at the outer corner of the corner tower, and solves the problem of large wind swing of the conductor under strong wind conditions.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Insulators (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)

Abstract

本申请具体公开了防风偏横担及输电塔,该防风偏横担包括:支柱绝缘子,其一端用于连接铁塔的塔身;斜拉绝缘子,其一端用于连接铁塔的铁横担,另一端连接于支柱绝缘子远离铁塔的另一端,以使得斜拉绝缘子和支柱绝缘子之间形成带有夹角的稳定支架结构;其中,支柱绝缘子和斜拉绝缘子位于导线和铁塔之间,以阻挡导线靠近铁塔。斜拉绝缘子和支柱绝缘子之间形成带有夹角的稳定支架结构,有效遏制导线风摆与铁塔靠近引起的风偏闪络事故,保证大风工况下的导线与铁塔之间的安全电气间隙。支柱绝缘子和斜拉绝缘子不直接连接导线,而是设置在铁塔和导线之间,从而在电网带电情况下,可直接在铁塔上安装或改造防风偏横担,无需停电操作。

Description

防风偏横担及输电塔 技术领域
本申请涉及输电绝缘设备技术领域,特别是涉及防风偏横担及输电塔。
背景技术
目前防风偏横担主要采用复合绝缘子,其主要存在以下几个问题:1、防风偏横担必须要停电安装或改造,国内尚未有可带电安装的防风偏复合绝缘横担投入工程应用;2、在极端台风条件下,因现有防风偏横担高压端无法固定,长度较大的防风偏横担存在变形挠度过大或折断的风险;3、因传统防风偏横担高压端无法固定,无法控制导线的最大风偏角度,存在台风工况下导线风偏跳电的电气安全隐患。
发明内容
本申请主要解决的技术问题是提供一种防风偏横担及输电塔,能够解决防风偏绝缘子无法带电安装和高压端无法固定的问题。
为解决上述技术问题,本申请采用的一个技术方案是提供一种防风偏横担,包括:支柱绝缘子,其一端用于连接铁塔的塔身;斜拉绝缘子,其一端用于连接所述铁塔的铁横担,另一端连接于所述支柱绝缘子远离所述铁塔的另一端,以使得所述斜拉绝缘子和所述支柱绝缘子之间形成带有夹角的稳定支架结构;其中,所述支柱绝缘子和所述斜拉绝缘子位于导线和所述铁塔之间,以阻挡所述导线靠近所述铁塔。
其中,还包括:连接夹具,所述支柱绝缘子的所述一端和所述斜拉绝缘子的所述一端分别通过一所述连接夹具连接于所述铁塔。
其中,所述连接夹具包括:两块直角板,对称夹设于所述铁塔的角钢处,其中一块所述直角板贴合所述角钢内侧壁设置,另一块所述直角板贴合所述角钢一侧外壁设置,两块直角板间通过紧固件固定;平板, 贴合所述角钢另一侧外壁设置,并分别与两块所述直角板通过所述紧固件固定;所述平板和另一块所述直角板间形成空间以连接所述支柱绝缘子的所述一端或所述斜拉绝缘子的所述一端。
其中,所述斜拉绝缘子的所述一端连接有Y型金具,所述直角板和所述平板之间卡设并固定有直角挂环或直角挂板,所述Y型金具与所述直角挂环或所述直角挂板相扣设置。
其中,所述支柱绝缘子的所述一端连接有连接件,所述连接件卡设并固定于所述直角板和所述平板之间。
其中,所述支柱绝缘子远离所述铁塔的所述另一端连接有扁脚金具,所述斜拉绝缘子的所述另一端连接有卡槽金具;或者,所述支柱绝缘子远离所述铁塔的所述另一端连接有卡槽金具,所述斜拉绝缘子的所述另一端连接有扁脚金具;所述扁脚金具与所述卡槽金具铰接。
为解决上述技术问题,本申请采用的另一个技术方案是提供一种输电塔,所述输电塔采用上述的防风偏横担,所述输电塔上至少设置一组所述防风偏横担。
其中,所述防风偏横担设置有至少两组,且对称设置于所述输电塔两侧,以阻挡所述导线靠近所述输电塔。
其中,所述防风偏横担设置有至少两组,且对称设置于所述铁横担沿所述导线方向的两侧。
其中,沿竖直向下方向所述防风偏横担向远离所述铁横担一侧偏移,以使得所述防风偏横担与竖直面之间形成锐角。
本申请的有益效果是:区别于现有技术的情况,斜拉绝缘子和支柱绝缘子分别连接于铁塔,且两者之间形成带有夹角的稳定支架结构,从而在极端台风天气下,导线随风摆动碰撞防风偏横担时可有效吸收能量,防风偏横担不易变形或者折断,并且可以控制导线最大风摆角度,有效遏制导线因风摆而与铁塔靠近引起的风偏闪络事故,保证大风工况下的导线与铁塔之间的安全电气间隙。另外,支柱绝缘子和斜拉绝缘子不直接连接导线,而是设置在铁塔和导线之间,从而在电网带电情况下,可直接在铁塔上安装或改造防风偏横担,无需停电操作,给电网客户带 来巨大的市场价值。
附图说明
为了更清楚地说明本申请实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其它的附图,其中:
图1是本申请的防风偏横担的一实施例的立体结构示意图;
图2是图1中A部分的放大结构示意图;
图3是图1中B部分的放大结构示意图;
图4是图1中C部分的放大结构示意图;
图5是本申请的输电塔的一实施例的立体结构示意图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本申请一部分实施例,而不是全部实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性的劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
请参阅图1-图4,图1是本申请的防风偏横担的一实施例的立体结构示意图;图2是图1中A部分的放大结构示意图;图3是图1中B部分的放大结构示意图;图4是图1中C部分的放大结构示意图。
本申请一实施例提供的一种防风偏横担10,包括支柱绝缘子11和斜拉绝缘子12。铁塔01包括塔身011和水平连接于塔身011上方的铁横担012,支柱绝缘子11的一端用于连接铁塔01的塔身011,斜拉绝缘子12一端用于连接铁塔01的铁横担012,另一端连接于支柱绝缘子11远离铁塔01的另一端,以使得斜拉绝缘子12和支柱绝缘子11之间形成带有夹角的稳定支架结构。具体地该夹角为锐角或者直角,当然也可为钝角,在此不做限定。支柱绝缘子11和斜拉绝缘子12位于导线02 和铁塔01之间,以阻挡导线02靠近铁塔01。图1中简化示意了塔身011和铁横担012,本实施例中,铁塔01为本领域常见的桁架结构铁塔,在此不再赘述。
从上述内容可以看出,斜拉绝缘子12和支柱绝缘子11分别连接于铁塔01,且两者之间形成带有夹角的稳定支架结构,从而在极端台风天气下,防风偏横担10不易变形或折断,导线02随风摆动碰撞防风偏横担10时可以得到有效的支撑,并且可以控制导线02最大风摆角度,有效遏制导线02因风摆而与铁塔01靠近引起的风偏闪络事故,保证大风工况下的导线02与铁塔01之间的安全电气间隙。另外,支柱绝缘子11和斜拉绝缘子12不直接连接导线02,而是设置在铁塔01和导线02之间,从而在电网带电情况下,可直接在铁塔01上安装或改造防风偏横担10,无需停电操作,给电网客户带来巨大的市场价值。
在其他实施例中,支柱绝缘子11和斜拉绝缘子12可均连接于铁塔01的铁横担012上或者也可均连接于铁塔01的塔身011上,且两者之间形成带有夹角的稳定支架结构。
在一实施例中,防风偏横担10还包括连接夹具13,支柱绝缘子11的一端和斜拉绝缘子12的一端分别通过连接夹具13连接于铁塔01。连接夹具13包括两块直角板131和一块平板132,两块直角板131对称夹设于铁塔01的角钢处,其中一块直角板131贴合角钢内侧壁设置,另一块直角板131贴合角钢一侧外壁设置,两块直角板131间通过紧固件(图中未示出)固定,平板132贴合角钢另一侧外壁设置,并分别与两块直角板131通过紧固件固定,平板132和另一块直角板131间形成空间以连接支柱绝缘子11的一端或斜拉绝缘子12的一端。从而连接夹具13通过夹设的方式将支柱绝缘子11、斜拉绝缘子12固定于铁塔01上,无需在铁塔01上打孔,不影响铁塔01本身的强度,且可保证连接夹具13于不同铁塔01安装部位的通用性及方便简捷性。具体地,紧固件可以是螺栓或者其他用于紧固的零件,还可以采用焊接或者胶接等其他常见的连接方式。
进一步地,支柱绝缘子11的一端连接有连接件111,连接件111卡 设并固定于直角板131和平板132之间,支柱绝缘子11与铁塔01之间采用固定连接的方式,一方面有效保证防风偏横担10中支柱绝缘子11起到的支撑传力作用,另一方面可以保证防风偏横担10在重力方向竖直面内的稳定性。具体地,连接件111为板型连接件,连接件111卡设于直角板131和平板132之间后可采用焊接、胶接、螺栓紧固连接等常见连接方式固定。
进一步地,斜拉绝缘子12的一端连接有Y型金具121,直角板131和平板132之间卡设并固定有直角挂环122,Y型金具121与直角挂环122相扣设置。由于Y型金具121与直角挂环122之间为环环铰接式结构,具备较高的自由度,可以有效解决防风偏横担10需向面外偏移安装的问题。另外,较高的自由度使得特定长度斜拉绝缘子12具备空间一定长度范围内均能通用的特点,同时,较高的自由度增加连接夹具13在铁横担012上的水平安装范围,可有效避开原有铁塔01连接节点,增加通用性。具体地,直角挂环122可选用ZH直角环,或者其他型号的直角挂环122。在其他实施例中,直角挂环122还可以采用直角挂板替代,此处不作限定。
在其他实施例中,还可以是斜拉绝缘子12与铁塔01间采用固定连接的方式,支柱绝缘子11与铁塔01间采用具有自由度的连接方式,此处不作限定。
进一步地,支柱绝缘子11远离铁塔01的另一端连接有扁脚金具112,斜拉绝缘子12的另一端连接有卡槽金具123,扁脚金具112和卡槽金具123铰接,支柱绝缘子11和斜拉绝缘子12通过扁脚金具112与卡槽金具123而铰接,一方面可有效解决安装过程中由于面内外角度偏差引起的安装错位的问题,另一方面可有效缓冲风偏导线02对斜拉绝缘子12的冲击作用,起到保护斜拉绝缘子12芯棒的作用。
在其他实施例中,还可以是支柱绝缘子11远离铁塔01的另一端连接有卡槽金具123,斜拉绝缘子12的另一端连接有扁脚金具112,扁角金具和卡槽金具123铰接,此处不作限定。
支柱绝缘子11和斜拉绝缘子12均由复合材料制成,具备重量轻、 结构简单、安装方便、绝缘性能好等特点。具体地,支柱绝缘子11和斜拉绝缘子12均包括位于内部的绝缘体和包覆于绝缘体外的橡胶伞裙。具体地,绝缘体可以是绝缘管或者绝缘芯棒。绝缘管可以是玻璃纤维浸渍环氧树脂缠绕固化成型的玻璃钢管,也可以是芳纶纤维浸渍环氧树脂缠绕固化成型的芳纤管;绝缘芯棒可以是玻璃纤维或者芳纶纤维浸渍环氧树脂缠绕拉挤成型的实心芯棒或者空心拉挤管,橡胶伞裙可以采用高温硫化硅橡胶制成,也可以采用其他形式的橡胶材料制成。在其他实施例中,支柱绝缘子11和斜拉绝缘子12还可以是其他的复合材料,此处不作限定。
在一个具体的实施场景中,斜拉绝缘子12和支柱绝缘子11分别连接于铁塔01,且两者之间形成带有夹角的稳定支架结构,从而在极端台风天气下,防风偏横担10不易变形或者折断,导线02随风摆动碰撞防风偏横担10时可获得有效支撑,并且可以控制导线02最大风摆角度,有效遏制导线02风摆与铁塔01靠近引起的风偏闪络事故,保证大风工况下的导线02与铁塔01之间的安全电气间隙。另外,支柱绝缘子11和斜拉绝缘子12不直接连接导线02,而是设置在铁塔01和导线02之间,从而在电网带电情况下,可直接在铁塔01上安装或改造防风偏横担10,无需停电操作,给电网客户带来巨大的市场价值。
同时,支柱绝缘子11的一端和斜拉绝缘子12的一端分别通过连接夹具13连接于铁塔01,无需在铁塔01上打孔,不影响铁塔01本身的强度,且可保证连接夹具13于不同铁塔01安装部位的通用性及方便简捷性。
另外,支柱绝缘子11与铁塔01之间采用固定连接的方式,一方面有效保证防风偏横担10中支柱绝缘子11起到的支撑传力作用,另一方面可以保证防风偏横担10在重力方向竖直面内的稳定性。斜拉绝缘子12与铁塔01之间的连接方式具备较高的自由度,可以有效解决防风偏横担10需向面外偏移安装的问题。另外,较高的自由度使得特定长度斜拉绝缘子12具备空间一定长度范围内均能通用的特点,同时,较高的自由度增加连接夹具13在铁横担012上的水平安装范围,可有效避 开原有铁塔01连接节点,增加通用性。支柱绝缘子11和斜拉绝缘子12通过扁脚金具112与卡槽金具123而铰接,一方面可有效解决安装过程中由于面内外角度偏差引起的安装错位的问题,另一方面可有效缓冲风偏导线02对斜拉绝缘子12的冲击作用,起到保护斜拉绝缘子12芯棒的作用。本申请的防风偏横担10可有效适用于工程线路中耐张段部分,尤其是转角塔外角侧耐张跳线处,解决大风工况下导线风偏大摆动问题。
请参阅图5,图5是本申请的输电塔的一实施例的立体结构示意图。
本申请一实施例提供的一种输电塔20,输电塔20安装有防风偏横担10,防风偏横担10为上述的任意一种防风偏横担10。输电塔20上至少设置一组防风偏横担10,每组防风偏横担10包括支柱绝缘子11和斜拉绝缘子12,以阻挡导线02在风偏情况下靠近塔身011。
在又一实施例中,防风偏横担10设置有至少两组,且对称设置于输电塔20两侧,以分别阻挡输电塔20两侧的导线02靠近输电塔20。例如,防风偏横担10设置有两组、四组或者更多组,每侧设置有一组、两组或者更多组。其他实施例中,若输电塔20仅一侧布设有导线02,则防风偏横担10可仅设置于输电塔20布设有导线02一侧。
在又一实施例中,在输电塔20设有导线02一侧,防风偏横担10设置有至少两组,且对称设置于铁横担012沿导线02方向的两侧。从而防风偏横担10可有效防止导线02靠近输电塔20,且至少两组的防风偏横担10可分担风偏导线02的冲击力,以提高整体抗压能力。具体地,防风偏横担10设置有两组,在其他实施例中,还可以设置有三组、四组或者更多组。
在又一实施例中,沿竖直向下方向的防风偏横担10向远离铁横担012一侧偏移,以使得防风偏横担10与竖直面之间形成锐角。具体地,防风偏横担10与竖直面之间形成的锐角角度为0—30度,例如0度、15度、30度等。此外,在实际安装时,还可在连接夹具处设置楔形调节板调节角度。通过设置楔形调节板可以灵活地根据实际工况选择防风偏横担10是否向面外偏移及偏移的角度,通用性更好。
具体地,本实施例中,支柱绝缘子11连接在塔身外侧竖向设置的第一角钢上,斜拉绝缘子12连接在铁横担012的第二角钢上,第二角钢水平设置且与导线02延伸方向垂直设置。一般而言,铁塔01的塔身011自身具有一定的锥度,整体呈下大上小的状态,从而铁横担012上的第二角钢与塔身上的第一角钢构成的平面并不是竖直面,而是与竖直面之间存在一夹角,该夹角一般为锐角。传统的防风偏横担设置时一般直接将防风偏绝缘子设置在竖直平面内,这就导致防风偏绝缘子自身因与塔身和铁横担固定连接而一直承受应力,容易发生变形或者折断,不能保证可靠的防风偏作用。本申请通过设置了Y型金具及连接金具等连接结构,具备较高的自由度,使得防风偏横担10与竖直面之间形成锐角,这与上述的夹角相近或者一致,从而避免了支柱绝缘子11和斜拉绝缘子12承受应力发生变形或者折断,进而保证了可靠的防风偏作用。
综上所述,斜拉绝缘子12和支柱绝缘子11分别连接于铁塔01,且两者之间形成带有夹角的稳定支架结构,从而在极端台风天气下,防风偏横担10不易变形或者折断,并且可以控制导线02最大风摆角度,导线02随风摆动碰撞防风偏横担10时可获得有效支撑,有效遏制导线02因风摆而与铁塔01靠近引起的风偏闪络事故,保证大风工况下的导线02与铁塔之间的安全电气间隙。另外,支柱绝缘子11和斜拉绝缘子12不直接连接导线02,而是设置在铁塔01和导线02之间,从而在电网带电情况下,可直接在铁塔01上安装或改造防风偏横担10,无需停电操作,给电网客户带来巨大的市场价值。
同时,支柱绝缘子11的一端和斜拉绝缘子12的一端分别通过连接夹具连接于铁塔01,无需在铁塔01上打孔,不影响铁塔01本身的强度,且可保证连接夹具于不同铁塔01安装部位的通用性及方便简捷性。
另外,支柱绝缘子11与铁塔01之间采用固定连接的方式,一方面有效保证防风偏横担10中支柱绝缘子11起到的支撑传力作用,另一方面可以保证防风偏横担10在重力方向竖直面内的稳定性。斜拉绝缘子12与铁塔01之间的连接方式具备较高的自由度,可以有效解决防风偏横担10需向面外偏移安装的问题。另外,较高的自由度使得特定长度 斜拉绝缘子12具备空间一定长度范围内均能通用的特点,同时,较高的自由度增加连接夹具在铁横担012上的水平安装范围,可有效避开原有铁塔01连接节点,增加通用性。支柱绝缘子11和斜拉绝缘子12通过扁脚金具与卡槽金具而铰接,一方面可有效解决安装过程中由于面内外角度偏差引起的安装错位的问题,另一方面可有效缓冲风偏导线02对斜拉绝缘子12的冲击作用,起到保护斜拉绝缘子12芯棒的作用。本申请的防风偏横担10可有效适用于工程线路中耐张段部分,尤其是转角塔外角侧耐张跳线处,解决大风工况下导线风偏大摆动问题。
以上所述仅为本申请的实施方式,并非因此限制本申请的专利范围,凡是利用本申请说明书及附图内容所作的等效结构或等效原理变换,或直接或间接运用在其他相关的技术领域,均同理包括在本申请的专利保护范围内。

Claims (10)

  1. 一种防风偏横担,其特征在于,包括:
    支柱绝缘子,其一端用于连接铁塔的塔身;
    斜拉绝缘子,其一端用于连接所述铁塔的铁横担,另一端连接于所述支柱绝缘子远离所述铁塔的另一端,以使得所述斜拉绝缘子和所述支柱绝缘子之间形成带有夹角的稳定支架结构;
    其中,所述支柱绝缘子和所述斜拉绝缘子位于导线和所述铁塔之间,以阻挡所述导线靠近所述铁塔。
  2. 根据权利要求1所述的横担,其特征在于,还包括:
    连接夹具,所述支柱绝缘子的所述一端和所述斜拉绝缘子的所述一端分别通过一所述连接夹具连接于所述铁塔。
  3. 根据权利要求2所述的横担,其特征在于,所述连接夹具包括:
    两块直角板,对称夹设于所述铁塔的角钢处,其中一块所述直角板贴合所述角钢内侧壁设置,另一块所述直角板贴合所述角钢一侧外壁设置,两块直角板间通过紧固件固定;
    平板,贴合所述角钢另一侧外壁设置,并分别与两块所述直角板通过所述紧固件固定;
    所述平板和另一块所述直角板间形成空间以连接所述支柱绝缘子的所述一端或所述斜拉绝缘子的所述一端。
  4. 根据权利要求3所述的横担,其特征在于,所述斜拉绝缘子的所述一端连接有Y型金具,所述直角板和所述平板之间卡设并固定有直角挂环或直角挂板,所述Y型金具与所述直角挂环或所述直角挂板相扣设置。
  5. 根据权利要求3所述的横担,其特征在于,所述支柱绝缘子的所述一端连接有连接件,所述连接件卡设并固定于所述直角板和所述平板之间。
  6. 根据权利要求1所述的横担,其特征在于,所述支柱绝缘子远离所述铁塔的所述另一端连接有扁脚金具,所述斜拉绝缘子的所述另一端连接有卡槽金具;或者,
    所述支柱绝缘子远离所述铁塔的所述另一端连接有卡槽金具,所述斜拉绝缘子的所述另一端连接有扁脚金具;
    所述扁脚金具与所述卡槽金具铰接。
  7. 一种输电塔,其特征在于,所述输电塔采用权利要求1-6中任一项所述的防风偏横担,所述输电塔上至少设置一组所述防风偏横担。
  8. 根据权利要求7所述的输电塔,其特征在于,所述防风偏横担设置有至少两组,且对称设置于所述输电塔两侧,以阻挡所述导线靠近所述输电塔。
  9. 根据权利要求7所述的输电塔,其特征在于,所述防风偏横担设置有至少两组,且对称设置于所述铁横担沿所述导线方向的两侧。
  10. 根据权利要求7所述的输电塔,其特征在于,沿竖直向下方向所述防风偏横担向远离所述铁横担一侧偏移,以使得所述防风偏横担与竖直面之间形成锐角。
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