WO2012088986A1 - 用于直流输电线路的检修器具 - Google Patents

用于直流输电线路的检修器具 Download PDF

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Publication number
WO2012088986A1
WO2012088986A1 PCT/CN2011/083172 CN2011083172W WO2012088986A1 WO 2012088986 A1 WO2012088986 A1 WO 2012088986A1 CN 2011083172 W CN2011083172 W CN 2011083172W WO 2012088986 A1 WO2012088986 A1 WO 2012088986A1
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WO
WIPO (PCT)
Prior art keywords
card
string
fixture
closed
insulator
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Application number
PCT/CN2011/083172
Other languages
English (en)
French (fr)
Inventor
康淑丰
张明旭
施凤祥
王学彬
焦巨轩
高志
李中生
耿三平
苏永杰
李俭
王军
姚伯岩
陈明
宋其丰
Original Assignee
河北省电力公司超高压输变电分公司
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Application filed by 河北省电力公司超高压输变电分公司 filed Critical 河北省电力公司超高压输变电分公司
Priority to CA2823132A priority Critical patent/CA2823132C/en
Publication of WO2012088986A1 publication Critical patent/WO2012088986A1/zh

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/02Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
    • H02G1/04Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables for mounting or stretching

Definitions

  • the invention relates to the field of electric power, in particular to an inspection device dedicated to a direct current transmission line. Background technique
  • the DC 660kV UHVDC transmission line uses different materials compared with the ultrahigh pressure and UHV that are currently in operation.
  • the conductor adopts 4xJL/G3A-1000/45mm 2 steel core aluminum stranded wire, and the distance between the poles of the conductor is 18m.
  • the linear insulator uses a V-shaped composite insulator with a length of approximately 8.5 m for a lightly contaminated area and 9.2 m for a severely contaminated area.
  • the tensile string is double 550kN porcelain insulator. Affected by the length of the insulator string and the clearance, the size of the tower carrying the insulator and the transmission line becomes larger. Due to the influence of the project, the vertical load of the line also increases accordingly, and the tension and length change. The replacement of the insulator requires tension. There are higher requirements in terms of length and length.
  • the transmission line maintenance equipment below 500kV voltage level in China has been relatively perfect, but due to the increase of voltage level, the increase of transmission line diameter and the increase of insulator string length, these maintenance tools are far from meeting the replacement requirements.
  • the technical problem to be solved by the present invention is to provide an inspection device dedicated to a DC transmission line.
  • the technical solution adopted by the present invention is:
  • Inspection equipment for DC transmission lines including fixtures and connectors for carding on both sides of the insulator string a tensioning device connected between the fixtures, the card mainly comprises a V-string upper card, a cross-load upper card, a single-string jig, a large knife card, a closed card, a wire end fixture, the single string fixture,
  • the wire end fixture and the closed card are all made of TC4 titanium alloy material, and the tensioning device is a mechanical transmission screw;
  • the V-string upper card, the cross-load upper card, the single-string jig and the two sets of tensioning devices are replaced, wherein the V-string upper card is fixedly connected to the tower side metal fittings.
  • the cross-load upper card is fixedly connected to the cross-arm package board, and the single-string fixture is fixedly connected to the V-type serial board, and the tensioning device is respectively connected to the V-string upper card and the single-string fixture, and the cross-load card.
  • the specific structure of the V-string card is as follows:
  • the V-string upper card includes a V-string upper plate and a V-string lower plate on both sides of the tower-side metal fitting hanging angle steel, and the V-string upper plate has an inner end surface and a tower Body side hanging point
  • the corresponding slot of the angle steel, the outer end surface of the lower plate of the V string is hinged with a steel joint I, and the other end of the steel joint I is provided with a pin hole connected with the tensioning device, the upper end of the V string upper plate and the V string lower plate Connected by bolts.
  • the cross arm loading card comprises a cross arm upper card body and a steel joint II for connecting with the tensioning device hinged thereto, and the cross arm upper card body is provided with a cross body bag The corresponding hole in the plate connection hole.
  • the single string fixture includes a single string fixture body provided with wings on both sides, the end of the wing is provided with a pin hole connecting the tensioning device, and the card is fixedly connected under the main body
  • the lower end portion of the inserting plate is provided with a pin hole corresponding to the position of the connecting hole of the V-shaped serial plate.
  • the cross-arm end fixture includes a cross-arm end clamp body provided with wings on both sides, and the end of the wing plate is provided with a pin hole connecting the tensioning device, and the main body is fixedly connected below There is a card with a card slot II, and the lower end of the card is provided with a pin hole corresponding to the position of the connecting hole on the traction plate.
  • the specific structure of the large knife card is: the cutter handle end of the large knife card is provided with a pin hole for connecting the tensioning device, and the cutter head end is provided with a card slot III for clamping the wire end plate, the cutter head end and the card
  • the two side walls of the slot III are arranged in an elbow shape.
  • the specific structure of the closed card is that the closed card comprises a closed card body and an upper cover disposed above the closed card body, and one end of the upper cover is movably connected to the closed card body through the pin shaft, and the other end passes
  • the bolt is fixedly connected with the closed card main body, and a through hole for accommodating the insulator is disposed between the closed card main body and the upper cover; the two ends of the main body are respectively provided with pin holes for connecting the tensioning device, and the inner side of the pin hole is disposed
  • There is a lifting device for lifting an insulator the lifting device is a bracket fixed to the main body of the closed card, and the bracket is provided with a pulley for hanging the rope.
  • the specific structure of the wire end fixture is that the wire end fixture comprises a wire end fixture body and a flap card disposed above the wire end fixture body, and one end of the flap card and the wire end fixture body pass the pin Axis
  • the movable connection is fixedly connected to the main end of the wire end by a bolt, and a through hole for accommodating the end plate of the wire is disposed between the main body of the wire end and the flap card; the main body of the wire end and the flap card
  • the holes corresponding to the nuts on the wire end plates are respectively provided; the steel joints III for connecting with the tensioning device are respectively movably connected at the two ends of the wire end fixture body.
  • the improvement of the tensioning device is that the tensioning device is a mechanical drive screw and a hydraulic device connected to one end of the mechanical drive screw through a positioning pin or an insulating pull rod.
  • the invention is based on the characteristics of a direct current transmission line tower structure, an insulator string hanging network method, a grounding line parameter, and the like, and is dedicated to power failure of a DC 660 kV transmission line.
  • the maintenance tool can replace V-type single-string insulators, double-string insulators, and long-rod insulators at the same time. It has the advantages of reasonable structure, high overall strength, small size, light weight and reliable operation. It is DC 660kV.
  • the safe operation of the transmission line and the daily maintenance after the operation provide a reliable guarantee.
  • the setting of the lifting device on the closed card enables the staff to hoist the heavy-weight long rod insulator during the operation of replacing the long rod insulator, which reduces the labor intensity and improves the working efficiency of the staff.
  • the tensioning device is matched with the mechanical transmission screw and the hydraulic device, and is used for retracting and releasing the air between the clamps, and solves the shortcoming of the transmission speed of the hydraulic transmission system under the large mechanical load, and reduces the height of the working personnel.
  • the residence time of the aerial work; and the structure has the function of mutual protection, that is, when one of the failures does not affect the normal operation of the other transmission mechanism, the reliability of the work is greatly improved;
  • the assembly design allows for separate storage and easy replacement and maintenance when the tensioning device is not in use.
  • FIG. 1 is a schematic structural view of a card on a V-string according to the present invention
  • FIG. 2 is a schematic structural view of a card on a cross-arm of the present invention
  • FIG. 3 is a front view of a single-string jig of the present invention
  • 4 is a schematic structural view of a large knife card of the present invention
  • FIG. 5 is a top view of FIG. 4
  • FIG. 6 is a schematic structural view of a closed card of the present invention
  • FIG. 7 is a schematic structural view of a wire end clamp of the present invention
  • 7 is a bottom view of FIG. 7;
  • FIG. 1 is a schematic structural view of a card on a V-string according to the present invention
  • FIG. 2 is a schematic structural view of a card on a cross-arm of the present invention
  • FIG. 3 is a front view of a single-string jig of the present invention
  • 4 is a schematic structural view of a large knife card of the present invention
  • FIG. 9 is a connection diagram for replacing a V-type single-string insulator according to the present invention
  • FIG. 10 is a connection diagram for replacing a string of a double-string insulator according to the present invention.
  • the connection diagram for replacing the outer strings of the double-string insulators is a connection diagram for replacing the long-rod insulators of the present invention
  • FIG. 13 is the first insulator for replacing the wire ends of the present invention.
  • Figure 14 is a connection diagram for replacing the first single insulator of the horizontal single end of the present invention. Among them: 1.V string on the card, 11. V string on the board, 12. V string lower board, 13. Steel joint I, 14. Card slot I,
  • the inspection apparatus for a DC transmission line includes a fixture and a tensioning device, and the fixture is mounted on both sides of the insulator string, the tensioning device Connected between the fixtures.
  • the fixture includes a V-string upper card 1, a cross-load upper card 2, a single-string jig 3, a large knife card 4, a closed card 5, and a wire end fixture 7, wherein the single-string fixture, the wire end fixture, and the closed card Made of TC4 titanium alloy material, it has high strength, good plasticity, light weight and body.
  • the utility model has the advantages of small accumulation, high bearing capacity and convenient working at height.
  • the V-string upper card 1 is fixedly connected to the angle-angle steel of the tower body side.
  • the specific structure is shown in Figure 1.
  • the utility model comprises a V string upper plate 11, a V string lower plate 12 and a steel joint I13, and the tower side gold fitting hanging angle steel is located between the V string upper plate 11 and the V string lower plate 12, and the V string upper plate 11 is provided on the inner end surface thereof.
  • a metal slot I 13 is hinged to the outer end surface of the V-string lower plate 12, and the other end of the steel joint I is provided with a pin hole for connecting the tensioning device; Both ends of the upper plate and the lower plate of the V string are connected by bolts.
  • the cross-load upper card 2 is fixedly connected to the cross-arm plate 82, and the specific structure is shown in FIG. 2.
  • the cross arm upper card body 21 and the steel joint 1122 that is movably connected thereto are included.
  • the cross-load upper card includes two triangular aluminum alloy plates correspondingly arranged, the steel joint II is located between two triangular aluminum alloy plates, and one end of the steel joint II is movably connected to one corner of the two triangular aluminum alloy plates through the pin shaft;
  • the alloy plate is provided with a pin hole corresponding to the connecting hole on the cross-board. When connecting, the cross-board is inserted between two triangular aluminum alloy plates and fixed by bolt holes and aluminum alloy plates.
  • the single-string fixture 3 is fixedly connected above the V-type series plate 87 or the traction plate 83, and the specific structure is shown in FIG.
  • the single string fixture 3 includes a single string fixture body 31, a flap 32 and a flap 34.
  • the single string fixture body 31 is provided with wings 32 on both sides thereof, and the ends of the flaps are provided with pin holes for connecting the tensioning devices.
  • the inserting plate 34 is fixedly connected under the single-cartridge main body 31, and the lower part of the inserting plate 34 is provided with a card slot ⁇ 33, and the lower end portion of the inserting plate is provided with a position corresponding to the connecting hole of the V-shaped serial plate or the traction connecting plate. Pin hole, can replace V-type single string of two strings of insulators at the same time.
  • the large knife card 4 is fixedly attached to the V-shaped series plate 87, and the specific structure is as shown in Figs. 4 and 5.
  • the cutter head end of the large knife card 4 is provided with a pin hole for connecting the tensioning device, and the cutter head end is provided with a card slot III for engaging the wire end plate, and the end portions of the cutter head and the card slot III are bent. Settings.
  • the fixing of the large knife card and the V-shaped series plate is realized.
  • the closed card 5 is set on the steel cap of the insulator, as shown in Figure 6.
  • the utility model comprises a closed card main body 51 and an upper cover 52 disposed above the closed card main body, wherein one end of the upper cover is movably connected to the closed card main body through a pin shaft, and the other end is fixedly connected with the closed card main body by a bolt, and the closed card main body
  • a through hole for accommodating the insulator is disposed between the upper cover and the upper cover; a pin hole for connecting the tensioning device is disposed at each end of the main body, and a lifting device for lifting the insulator is disposed at an inner side of the pin hole.
  • the lifting device is a bracket fixed to the main body of the closed card.
  • the bracket is provided with a pulley 54 for hanging the rope.
  • the wire end fixture 7 is fixedly connected to the wire end plate 81, and the specific structure is as shown in Figs. 7 and 8.
  • the utility model comprises a wire end fixture body 71 and a flap card 72.
  • the flap card 72 is disposed above the wire end fixture body, and one end of the flap card is movably connected with the wire end fixture main body 71 through the pin shaft, and the other end is connected by a bolt and
  • the wire end fixture body is fixedly connected, and a through hole for accommodating the wire end plate is disposed between the wire end fixture main body and the flap card;
  • the wire end fixture main body 71 and the flap card 72 are further provided with a wire end plate Corresponding holes of the upper nut;
  • the steel joints 11173 for connecting with the tensioning device are movably connected to the two ends of the wire end fixture main body 71, respectively.
  • the tensioning device is connected between the V string upper card and the single string jig, and between the cross arm upper card and the single string jig, the tensioning device is a combination of the mechanical drive screw 84 and the hydraulic device 85, the mechanical transmission wire The bar and the hydraulic device are connected by an insulating pull rod 86.
  • the plug-in board 34 of the single-string fixture 3 with the card slot II 33 is inserted over the V-type series board 87, so that the connection hole on the V-type series board 87 is aligned with the pin hole of the single-string fixture 3, and penetrates. a bolt to fix the single string fixture 3 to the V-type series plate 87;
  • the first set of tensioning device is assembled, and one end of the hydraulic device 85 is movably connected to the end of the pin joint of the steel joint I 13 of the card 1 through the pin, and the other end of the hydraulic device 85 is passed through the insulating rod and the machine.
  • One end of the drive screw 84 is fixedly connected, and the other end of the mechanical drive screw 84 is movably connected to a pin hole of the single-string fixture 3 through a pin;
  • the second set of tensioning device is assembled as above, and one end of the hydraulic device 85 is The end of the hydraulic device 85 is fixedly connected to one end of the mechanical transmission screw 84 through the insulating pull rod through the pin shaft, and the other end of the mechanical transmission screw 84.
  • One end is movably connected to the other pin hole of the single-string fixture 3 through the pin.
  • the invention is used for replacing a double string insulator on a DC 660 kV transmission line, and replacing it according to needs
  • the inner string and the outer string are combined in different combinations.
  • the V-shaped series plate 87 is inserted into the slot III of the large knife card 4, and the elbow of the end of the cutter head is hooked to the bolt on the V-shaped series plate, and the direction of the blade end of the large knife card is opposite to the direction of the bolt force.
  • the pulling force can realize the fixing of the large knife card and the V-shaped series plate; the connection between the V-string upper card 1 and the tower-side metal fittings angle angle steel is the same as that in the first embodiment; then the tensioning device is assembled, and the hydraulic device 85 is assembled.
  • One end of the hydraulic coupling 85 is fixedly connected to one end of the mechanical transmission screw 84 through an insulating rod, and the mechanical transmission screw is movably connected to the one end of the steel joint I 13 of the card 1 on the V string.
  • the other end of the 84 is movably connected to the pin hole of the end of the large knife knives through the pin.
  • the V-shaped series plate 87 is inserted into the slot III of the large knife card 4, and the elbow of the end of the cutter head is hooked to the bolt on the V-shaped series plate, and the direction of the blade end of the large knife card is opposite to the direction of the bolt force.
  • the pulling force can realize the fixing of the large knife card and the V-shaped series board; the connection of the cross arm upper card 2 and the cross-loading board 82 is the same as that in the first embodiment;
  • one end of the hydraulic device 85 is movably connected to one end of the cross arm upper card 2 steel joint II 22 with a pin hole through a pin shaft, and the other end of the hydraulic device 85 is fixedly connected to one end of the mechanical drive screw 84 through an insulating pull rod.
  • the other end of the mechanical drive screw 84 is movably coupled to the pin hole of the end of the large knife insert by a pin.
  • the mechanical drive screw and the hydraulic device of the tensioning device are respectively connected to the pin holes at the two ends of the closed card 5, and then the insulating pull rod 86 is connected between the mechanical drive screw and the hydraulic device, so that the insulator is long. Tensioning the insulator.
  • the insulator When the weight of the insulator is large, the insulator is lifted by the lifting device on the closed card, which saves human input and improves the safety performance of the operation process.
  • the wire end fixture 7 When the invention replaces the first insulator of the wire end on the DC 660 kV transmission line, the wire end fixture 7, the closed card 5 and the tensioning device are replaced, as shown in FIG.
  • the difference between this embodiment and the third embodiment is that a set of closed card is mounted on the steel cap of the first insulator of the wire end; and the flip card 72 of the wire end fixture 7 is rotated around the pin to the wire end card.
  • the wire end plate is inserted between the main body of the wire end fixture 7 and the flip card, and the nut on the wire end plate is inserted into the bolt hole of the wire end fixture, and then Bolt the other end of the flap card to the main body of the wire end fixture.
  • Embodiment 5 When the first insulator of the cross-arm end is replaced on the DC 660 kV transmission line, the cross-arm clamp, the closed card and the tensioning device are replaced, as shown in FIG. 14 .
  • the difference between this embodiment and the embodiment 4 is that: a set of closed card is mounted on the steel cap of the first insulator of the cross-arm end; the traction link card is mounted in the slot II of the cross-arm end fixture, The single string fixture is then bolted to the traction link.

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  • Electric Cable Installation (AREA)

Description

用于直流输电线路的检修器具
技术领域
本发明涉及电力领域, 特别是一种专用于直流输电线路上的检修器具。 背景技术
随着我国电网建设的日趋完善,超高压输电线路已经成为我国电力电网的 主干网架, 这也为运行检修工作提出了更高的要求。 特别是伴随直流 660kV 电压等级输电线路在国内的首次应用, 为保证线路的正常投运, 以及对线路运 行中发现的问题及时进行检修, 以确保直流输电线路的安全运行, 则必须开发 一套用于线路运行检修所需要的工器具。
输电线路上的主要检修工作内容之一就是对绝缘子的检修更换,高压输电 线大多通过绝缘子支撑在横担上,绝缘子在架空输电线路中起着支撑导线和防 止电流回地的基本作用。 直流 660kV特高压直流输电线路与现在运行的超高 压、 特高压相比采用了不同的材料, 如导线采用 4xJL/G3A-1000/45mm2钢芯 铝绞线, 导线极间间距 18m。 直线绝缘子采用 V型合成绝缘子, 长度约为: 轻度污区 8.5m, 重度污区 9.2m。 耐张串采用双联 550kN瓷绝缘子。 受绝缘子 串长及电气间隙影响, 承载绝缘子和输电线的塔头尺寸变大, 受工程影响, 线 路垂直荷重也相应增大, 使张力、 长度等均发生变化, 这对绝缘子的更换要求 在张力、 长度等方面就有了更高的要求。 目前国内 500kV 电压等级以下的输 电线路检修器具已经比较完善, 但是由于电压等级的升高, 输电线径的增大, 以及绝缘子串长的增加, 这些检修器具已经远远不能满足更换需求。
发明内容
本发明需要解决的技术问题是提供一种专用于直流输电线路上的检修器 具。
为解决上述技术问题, 本发明所采取的技术方案是:
用于直流输电线路的检修器具,包括用于卡装在绝缘子串两侧的卡具和连 接于卡具之间的张紧装置, 所述卡具主要包括 V 串上卡、 横担上卡、 单串卡 具、 大刀卡、 闭式卡、 导线端卡具, 上述单串卡具、 导线端卡具以及闭式卡均 采用 TC4钛合金材料制作, 所述张紧装置为机械传动丝杠;
当更换 V型单串绝缘子时, 采用 V串上卡、 横担上卡、 单串卡具和两套 张紧装置的组合形式进行更换, 其中 V 串上卡固定连接于塔身侧金具挂点角 钢上, 横担上卡固定连接于横担包板上, 单串卡具固定连接在 V型串联板上, 张紧装置分别连接在 V串上卡和单串卡具、 以及横担上卡和单串卡具之间; 当更换双串绝缘子时, 采用 V 串上卡、 横担上卡、 大刀卡和两套张紧装 置的组合形式进行更换, 其中 V 串上卡固定连接于塔身侧金具挂点角钢上, 横担上卡固定连接于横担包板上, 大刀卡卡装在 V型串联板上, 张紧装置分 别连接在 V串上卡和大刀卡、 以及横担上卡和大刀卡之间;
当更换中间单片、 多片绝缘子、 或者长棒型绝缘子时, 只采用两套闭式卡 和两套张紧装置即可进行更换, 其中闭式卡套装在绝缘子钢帽上, 张紧装置连 接在两套闭式卡之间;
当更换横担端第一片绝缘子时, 采用横担端卡具、 闭式卡和两套张紧装置 相配合的形式进行更换, 其中单串卡具固定连接在牵引联板上, 闭式卡套装在 绝缘子钢帽上, 张紧装置连接在单串卡具和闭式卡之间;
当更换导线端第一片绝缘子时, 采用导线端卡具、 闭式卡和两套张紧装置 相配合的形式进行更换, 其中导线端卡具固定连接在导线端联板上, 闭式卡套 装在绝缘子钢帽上, 张紧装置连接在导线端卡具和闭式卡之间。
所述 V 串上卡的具体结构为: V 串上卡包括位于塔身侧金具挂点角钢两 侧的 V串上板和 V串下板, 所述 V串上板内端面上设置有与塔身侧金具挂点 角钢相应的卡槽 I , V串下板的外端面上铰接有钢接头 I ,钢接头 I的另一端 设置有与张紧装置连接的销孔, V串上板和 V串下板的两端通过螺栓连接。
所述横担上卡的具体结构:横担上卡包括横担上卡主体和与之铰接的用于 与张紧装置进行连接的钢接头 II ,横担上卡主体上设置有与横担包板连接孔相 应的螺栓孔。
所述单串卡具的具体结构: 单串卡具包括两侧设置有翼板的单串卡具主 体, 翼板的端部设置有连接张紧装置的销孔, 主体下方固定连接有带卡槽 II的 插板, 插板的下端部设置有与 V型串联板连接孔位置相应的销孔。
所述横担端卡具的具体结构:横担端卡具包括两侧设置有翼板的横担端卡 具主体, 翼板的端部设置有连接张紧装置的销孔, 主体下方固定连接有带卡槽 II的插板, 插板的下端部设置有与牵引联板上连接孔位置相应的销孔。
所述大刀卡的具体结构为:所述大刀卡的刀把端设置有用于连接张紧装置 的销孔, 刀头端设置有用于卡装导线端联板的卡槽 III , 刀头端部、 卡槽 III的两 侧壁成弯头状设置。
所述闭式卡的具体结构为:所述闭式卡包括闭式卡主体和设置在闭式卡主 体上方的上盖, 上盖的一端通过销轴与闭式卡主体活动连接, 另一端通过螺栓 与闭式卡主体固定连接, 闭式卡主体和上盖之间设置有容纳绝缘子的通孔; 所 述主体的两端部分别设置有用于连接张紧装置的销孔,销孔的内侧设置有用于 起吊绝缘子的起吊装置, 所述起吊装置为固定在闭式卡主体上的支架, 支架上 设置有用于悬挂绳索的滑轮。
所述导线端卡具的具体结构为:所述导线端卡具包括导线端卡具主体和设 置在导线端卡具主体上方的翻板卡,翻板卡的一端与导线端卡具主体通过销轴 活动连接, 另一端通过螺栓与导线端卡具主体固定连接,导线端卡具主体和翻 板卡之间设置有容纳导线端联板的通孔;所述导线端卡具主体与翻板卡上均设 置有与导线端联板上的螺母相应的孔;所述导线端卡具主体的两端部分别活动 连接有用于与张紧装置进行连接的钢接头 III。 所述张紧装置的改进在于:所述张紧装置为机械传动丝杠和与机械传动丝 杠一端通过定位销或绝缘拉棒连接的液压装置。
由于采用了上述技术方案, 本发明取得的技术进步在于: 本发明基于直流输电线路塔型结构、绝缘子串挂网方式、导地线参数等特 点研制的一种专用于直流 660kV输电线路上停电使用的检修工器具,可同时对 V型单串绝缘子、 双串绝缘子、 以及长棒型等类绝缘子进行更换, 具有结构合 理、 整体强度高、 体积小、 质量轻、 工作可靠等优点, 为直流 660kV输电线路 的安全投运和运行后的日常检修提供了可靠保障。
闭式卡上起吊装置的设置,可使工作人员在更换长棒型绝缘子的操作过程 中, 吊装重量较重的长棒型绝缘子, 降低了劳动强度, 提高了工作人员的工作 效率。 张紧装置成机械传动丝杠与液压装置的配合设置, 用于卡具间空行程的 收放,解决了在大机械荷载下液压传动系统存在的传动速度慢的缺点, 减少了 高空作业人员在高空作业的滞留时间; 并且此种结构具有互为保护的作用, 即 当其中一个失效时不影响另一个传动机构的正常工作,大大提高了工作的可靠 性; 另外由于采用的是分体结构的组装设计, 在张紧装置不使用时, 可分开存 放, 便于更换和维护。
附图说明 图 1: 为本发明 V串上卡的结构示意图; 图 2: 为本发明横担上卡的结构示意图; 图 3: 为本发明单串卡具的主视图; 图 4: 为本发明大刀卡的结构示意图; 图 5: 为图 4的俯视图; 图 6: 为本发明闭式卡的结构示意图; 图 7: 为本发明导线端卡具的结构示意图; 图 8: 为图 7的仰视图; 图 9: 为本发明用于更换 V型单串绝缘子的连接关系图; 图 10: 为本发明用于更换双串绝缘子内串的连接关系图; 图 11 : 为本发明用于更换双串绝缘子外串的连接关系图; 图 12: 为本实用新型用于更换长棒型绝缘子的连接关系图; 图 13: 为本发明用于更换导线端第一片绝缘子的连接关系图; 图 14: 为本发明用于更换横单端第一片绝缘子的连接关系图。 其中: 1.V串上卡, 11. V串上板, 12. V串下板, 13.钢接头 I , 14.卡槽 I ,
2.横担上卡, 21.横担上卡主体, 22.钢接头 II , 3.单串卡具, 31.单串卡具 主体, 32.翼板, 33.卡槽 II, 34.插板, 4.大刀卡, 41.卡槽 III ,5.闭式卡, 51. 闭 式卡主体, 52.上盖, 53.支架, 54.滑轮, 7.导线端卡具, 71.导线端卡具主体, 72.翻板卡, 73.钢接头 III, 81.导线端联板, 82.横担包板, 83.牵引联板, 84.机 械传动丝杠, 85. 液压装置, 86.绝缘拉棒, 87. V型串联板。
具体实施方式 下面结合附图及具体实施方式对本发明作更进一步详细说明: 用于直流输电线路的检修器具, 包括卡具和张紧装置, 卡具卡装在绝缘子 串的两侧, 张紧装置连接于卡具之间。 卡具包括 V串上卡 1、 横担上卡 2、 单 串卡具 3、 大刀卡 4、 闭式卡 5、 导线端卡具 7, 其中单串卡具、 导线端卡具以 及闭式卡均采用 TC4钛合金材料制作, 具有强度高、 可塑性好、 重量轻、 体 积小、 承载力高、 便于高空作业的特点。
V串上卡 1固定连接在塔身侧金具挂点角钢上, 具体结构如图 1所示。 包 括 V串上板 11、 V串下板 12和钢接头 I 13 , 塔身侧金具挂点角钢位于 V串 上板 11和 V串下板 12之间, V串上板 11内端面上设置有与塔身侧金具挂点 角钢相应的卡槽 I , V串下板 12的外端面上铰接有钢接头 I 13 , 钢接头 I的 另一端设置有销孔, 用于连接张紧装置; V串上板和 V串下板的两端通过螺栓 连接。
横担上卡 2固定连接在横担包板 82上, 具体结构如图 2所示。 包括横担 上卡主体 21和与之活动连接的钢接头 1122。 横担上卡包括相应设置的两块三 角形铝合金板,钢接头 II位于两块三角形铝合金板之间,钢接头 II的一端通过 销轴与两块三角形铝合金板的一角活动连接;三角形铝合金板上设置有与横担 包板上连接孔相应的销孔。连接时,将横担包板插接在两块三角形铝合金板之 间, 通过螺栓与铝合金板的销孔固定。
单串卡具 3固定连接在 V型串联板 87或牵引联板 83的上方, 具体结构 如图 3所示。 单串卡具 3包括单串卡具主体 31、 翼板 32和插板 34, 单串卡具 主体 31的两侧设置有翼板 32, 翼板的端部设置有连接张紧装置的销孔, 插板 34固定连接在单串卡具主体 31的下方, 插板 34的下部设置有卡槽 Π 33 , 插 板的下端部设置有与 V型串联板或牵引联板上连接孔位置相应的销孔, 可同 时更换 V型单串的两串绝缘子。
大刀卡 4固定连接在 V型串联板 87上, 具体结构如图 4和图 5所示。 大 刀卡 4的刀把端设置有用于连接张紧装置的销孔,刀头端设置有用于卡装导线 端联板的卡槽 III , 刀头端部、 卡槽 III的两侧壁成弯头状设置。 大刀卡使用时, 将 V型串联板 87插入卡槽 III内,将刀头端部的弯头勾住 V型串联板上的螺栓, 同时将对大刀卡的刀把端施加与螺栓受力方向相反的拉力,即可实现大刀卡与 V型串联板的固定。
闭式卡 5套装在绝缘子的钢帽上, 具体结如图 6所示。 包括闭式卡主体 51和设置在闭式卡主体上方的上盖 52, 上盖的一端通过销轴与闭式卡主体活 动连接, 另一端通过螺栓与闭式卡主体固定连接, 闭式卡主体和上盖之间设置 有容纳绝缘子的通孔; 主体的两端部分别设置有用于连接张紧装置的销孔,销 孔的内侧设置有用于起吊绝缘子的起吊装置。起吊装置为固定在闭式卡主体上 的支架 53, 支架上设置有用于悬挂绳索的滑轮 54。
导线端卡具 7固定连接在导线端联板 81上,具体结构如图 7和图 8所示。 包括导线端卡具主体 71和翻板卡 72, 翻板卡 72设置在导线端卡具主体的上 方, 翻板卡的一端与导线端卡具主体 71通过销轴活动连接, 另一端通过螺栓 与导线端卡具主体固定连接,导线端卡具主体和翻板卡之间设置有容纳导线端 联板的通孔;导线端卡具主体 71与翻板卡 72上还设置有与导线端联板上的螺 母相应的孔; 导线端卡具主体 71的两端部分别活动连接有用于与张紧装置进 行连接的钢接头 11173。
张紧装置连接在 V 串上卡和单串卡具之间, 以及横担上卡和单串卡具之 间, 张紧装置为机械传动丝杠 84和液压装置 85的组合体,机械传动丝杠和液 压装置之间通过绝缘拉棒 86连接。
实施例 1
本发明用于直流 660kV输电线路上更换 V型单串绝缘子时, 采用 V串上 卡 1、 横担上卡 2、 单串卡具 3和两套张紧装置的组合形式进行更换, 如图 9 所示。
首先将单串卡具 3带卡槽 II 33的插板 34插接在 V型串联板 87的上方, 使 V型串联板 87上的连接孔对准单串卡具 3的销孔, 穿入螺栓, 使单串卡具 3固定在 V型串联板 87上;
将塔身侧金具挂点角钢放置在 V串上板 11和 V串下板 12之间, 使角钢 的垂直端卡装在 V串上板 11的卡槽 I内, 然后用螺栓将 V串上板 11和 V串 下板 12的两端固定连接;
将横担包板插接在横担上卡 2的两块三角形铝合金板之间,使铝合金板上 的销孔与横担包板上的连接孔位置相应, 然后用螺栓穿入销孔和连接孔之间, 使横担上卡固定连接在横担包板上;
然后组装第一套张紧装置, 将液压装置 85的一端通过销轴活动连接在 V 串上卡 1的钢接头 I 13带有销孔的一端, 液压装置 85的另一端通过绝缘拉棒 与机械传动丝杠 84的一端固定连接,机械传动丝杠 84的另一端通过销轴与单 串卡具 3的一个销孔活动连接; 其次, 同上组装第二套张紧装置, 将液压装置 85的一端通过销轴活动连接在横担上卡 2钢接头 Π 22带有销孔的一端, 液压 装置 85的另一端通过绝缘拉棒与机械传动丝杠 84的一端固定连接,机械传动 丝杠 84的另一端通过销轴与单串卡具 3的另一个销孔活动连接。
连接完成后, 收紧丝杠或者启动液压装置, 使 V 串上卡和横担上卡与单 串卡具之间张紧, 使内串绝缘子松弛, 不再有张力, 即可进行 V型单串绝缘 子的更换。
实施例 2
本发明用于直流 660kV输电线路上更换双串绝缘子时, 根据需要更换的 内串和外串进行不同的组合完成。
当更换双串绝缘子内串时, 采用 V串上卡 1、 大刀卡 4和张紧装置的组合 形式进行更换, 如图 10所示。 首先将 V型串联板 87插入大刀卡 4的卡槽 III 内, 将刀头端部的弯头勾住 V型串联板上的螺栓, 同时将对大刀卡的刀把端 施加与螺栓受力方向相反的拉力, 即可实现大刀卡与 V型串联板的固定; V串上卡 1与塔身侧金具挂点角钢的连接同实施例 1中的连接方式; 然后组装张紧装置, 将液压装置 85的一端通过销轴活动连接在 V串上卡 1的钢接头 I 13带有销孔的一端, 液压装置 85的另一端通过绝缘拉棒与机械 传动丝杠 84的一端固定连接,机械传动丝杠 84的另一端通过销轴与大刀卡刀 ^te端部的销孔活动连接。
连接完成后, 收紧丝杠或者启动液压装置, 使 V 串上卡和大刀卡之间张 紧, 使内串绝缘子松弛, 不再有张力, 然后即可进行更换。
当更换双串绝缘子外串时, 采用横担上卡 2、 大刀卡 4和张紧装置的组合 形式进行更换, 如图 11所示。 首先将 V型串联板 87插入大刀卡 4的卡槽 III 内, 将刀头端部的弯头勾住 V型串联板上的螺栓, 同时将对大刀卡的刀把端 施加与螺栓受力方向相反的拉力, 即可实现大刀卡与 V型串联板的固定; 横担上卡 2与横担包板 82的连接同实施例 1中连接方式;
然后将液压装置 85的一端通过销轴活动连接在横担上卡 2钢接头 II 22带 有销孔的一端,液压装置 85的另一端通过绝缘拉棒与机械传动丝杠 84的一端 固定连接, 机械传动丝杠 84的另一端通过销轴与大刀卡刀把端的销孔活动连 接。
连接完成后,收紧丝杠或者启动液压装置,使横担上卡和大刀卡之间张紧, 使外串绝缘子松弛, 不再有张力, 然后即可进行更换。
实施例 3
本发明用于直流 660kV输电线路上更换中间单片、 多片绝缘子, 或者长 棒型绝缘子时, 只采用两个闭式卡 5和两套张紧装置即可完成,如图 12所示。 将闭式卡的上盖 52打开, 使之绕销轴旋转至闭式卡主体的一侧, 然后将闭式 卡卡装在绝缘子两端的钢帽上,扣合上盖至原位, 用螺栓将上盖与闭式卡主体 固定连接, 即可将闭式卡固定在绝缘子上;
再将张紧装置的机械传动丝杠和液压装置分别连接在闭式卡 5 两端的销 孔上, 然后将绝缘拉棒 86连接在机械传动丝杠和液压装置之间, 满足绝缘子 较长时进行对绝缘子的张紧。
连接完成后, 收紧丝杠或者启动液压装置, 将闭式卡之间张紧, 使绝缘子 松弛, 不再有张力, 即可进行绝缘子的更换。
当绝缘子重量较大时, 采用闭式卡上的起吊装置将绝缘子吊起, 节省了人 力的投入, 提高了操作过程的安全性能。
实施例 4
本发明用于直流 660kV输电线路上更换导线端第一片绝缘子时, 采用导 线端卡具 7、 闭式卡 5和张紧装置相配合的形式进行更换, 如图 13所示。 本 实施例与实施例 3的区别在于:将一套闭式卡卡装在导线端第一片绝缘子的钢 帽上; 将导线端卡具 7的翻板卡 72绕销轴旋转至导线端卡具主体 71的一侧, 将导线端联板卡装在导线端卡具 7的主体和翻板卡之间,并使导线端联板上的 螺母卡入导线端卡具的螺栓孔内,然后用螺栓将翻板卡的另一端与导线端卡具 的主体固定连接。 实施例 5 本发明用于直流 660kV输电线路上更换横担端第一片绝缘子时, 采用横 担端卡具、 闭式卡和张紧装置相配合的形式进行更换, 如图 14所示。 本实施 例与实施例 4 的区别在于: 将一套闭式卡卡装在横担端第一片绝缘子的钢帽 上; 将牵引联板卡装在横担端卡具的卡槽 II内, 然后用螺栓将单串卡具固定连 接在牵引联板上。

Claims

权 利 要 求
1、 用于直流输电线路的检修器具, 包括用于卡装在绝缘子串两侧的卡具 和连接于卡具之间的张紧装置,其特征在于:所述卡具主要包括 V串上卡( 1 )、 横担上卡(2 )、 单串卡具(3 )、 大刀卡(4 )、 闭式卡(5 )、 导线端卡具(7 ), 上述单串卡具、 导线端卡具以及闭式卡均采用 TC4钛合金材料制作, 所述张 紧装置为机械传动丝杠;
当更换 V型单串绝缘子时, 采用 V串上卡、 横担上卡、 单串卡具和两套 张紧装置的组合形式进行更换, 其中 V串上卡( 1 ) 固定连接于塔身侧金具挂 点角钢上, 横担上卡(2 ) 固定连接于横担包板上, 单串卡具(3 ) 固定连接在 V型串联板上, 张紧装置分别连接在 V 串上卡和单串卡具、 以及横担上卡和 单串卡具之间;
当更换双串绝缘子时, 采用 V 串上卡、 横担上卡、 大刀卡和两套张紧装 置的组合形式进行更换, 其中 V串上卡( 1 ) 固定连接于塔身侧金具挂点角钢 上, 横担上卡 ( 2 ) 固定连接于横担包板上, 大刀卡(4 )卡装在 V型串联板 上, 张紧装置分别连接在 V串上卡和大刀卡、 以及横担上卡和大刀卡之间; 当更换中间单片、 多片绝缘子、 或者长棒型绝缘子时, 只采用两套闭式卡 和两套张紧装置即可进行更换, 其中闭式卡(5 )套装在绝缘子钢帽上, 张紧 装置连接在两套闭式卡之间;
当更换横担端第一片绝缘子时, 采用横担端卡具、 闭式卡和两套张紧装置 相配合的形式进行更换, 其中单串卡具(3 ) 固定连接在牵引联板上, 闭式卡 ( 5 )套装在绝缘子钢帽上, 张紧装置连接在单串卡具和闭式卡之间;
当更换导线端第一片绝缘子时, 采用导线端卡具、 闭式卡和两套张紧装置 相配合的形式进行更换, 其中导线端卡具(7) 固定连接在导线端联板上, 闭 式卡(5)套装在绝缘子钢帽上, 张紧装置连接在导线端卡具和闭式卡之间。
2、 根据权利要求 1所述的用于直流输电线路的检修器具, 其特征在于: 所述 V串上卡( 1 ) 包括位于塔身侧金具挂点角钢两侧的 V串上板( 11 )和 V 串下板( 12), 所述 V串上板( 11 ) 内端面上设置有与塔身侧金具挂点角钢相 应的卡槽 1 (14), V 串下板(12) 的外端面上铰接有钢接头 I ( 13), 钢接头 I的另一端设置有与张紧装置连接的销孔, V串上板和 V串下板的两端通过螺 栓连接。
3、 根据权利要求 1所述的用于直流输电线路的检修器具, 其特征在于: 所述横担上卡 ( 2 ) 包括横担上卡主体( 21 )和与之铰接的用于与张紧装置进 行连接的钢接头 II (22), 横担上卡主体上设置有与横担包板连接孔相应的螺 栓孔。
4、 根据权利要求 1所述的用于直流输电线路的检修器具, 其特征在于: 所述单串卡具(3) 包括两侧设置有翼板(32)的单串卡具主体(31 ), 翼板的 端部设置有连接张紧装置的销孔, 主体下方固定连接有带卡槽 II (33)的插板 (34), 插板的下端部设置有与 V型串联板或牵引联板上连接孔位置相应的销 孔。
5、 根据权利要求 1所述的用于直流输电线路的检修器具, 其特征在于: 所述大刀卡(4) 的刀把端设置有用于连接张紧装置的销孔, 刀头端设置有用 于卡装导线端联板的卡槽 111(41), 刀头端部、 卡槽 III的两侧壁成弯头状设置。
6、 根据权利要求 1所述的用于直流输电线路的检修器具, 其特征在于: 所述闭式卡( 5 )包括闭式卡主体( 51 )和设置在闭式卡主体上方的上盖( 52 ), 上盖的一端通过销轴与闭式卡主体活动连接,另一端通过螺栓与闭式卡主体固 定连接, 闭式卡主体和上盖之间设置有容纳绝缘子的通孔; 所述主体的两端部 分别设置有用于连接张紧装置的销孔,销孔的内侧设置有用于起吊绝缘子的起 吊装置, 所述起吊装置为固定在闭式卡主体上的支架(53 ), 支架上设置有用 于悬挂绳索的滑轮(54 )。
7、 根据权利要求 1所述的用于直流输电线路的检修器具, 其特征在于: 所述导线端卡具(7 ) 包括导线端卡具主体(71 )和设置在导线端卡具主体上 方的翻板卡(72 ), 翻板卡的一端与导线端卡具主体(71 )通过销轴活动连接, 另一端通过螺栓与导线端卡具主体固定连接,导线端卡具主体和翻板卡之间设 置有容纳导线端联板的通孔; 所述导线端卡具主体( 71 )与翻板卡( 72 )上均 设置有与导线端联板上的螺母相应的孔; 所述导线端卡具主体(71 )的两端部 分别活动连接有用于与张紧装置进行连接的钢接头 III ( 73 )。
8、 根据权利要求 1至 7任一项所述的用于直流输电线路的检修器具, 其 特征在于:所述张紧装置为机械传动丝杠和与机械传动丝杠一端连接的液压装 置。
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