WO2016165367A1 - 环氧玻纤管内填充空心绝缘囊的复合绝缘横担和支柱 - Google Patents

环氧玻纤管内填充空心绝缘囊的复合绝缘横担和支柱 Download PDF

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Publication number
WO2016165367A1
WO2016165367A1 PCT/CN2015/097308 CN2015097308W WO2016165367A1 WO 2016165367 A1 WO2016165367 A1 WO 2016165367A1 CN 2015097308 W CN2015097308 W CN 2015097308W WO 2016165367 A1 WO2016165367 A1 WO 2016165367A1
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glass fiber
insulating
fiber tube
epoxy glass
insulation
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PCT/CN2015/097308
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English (en)
French (fr)
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王伟
黄璜
黄长学
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王伟
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Publication of WO2016165367A1 publication Critical patent/WO2016165367A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/38—Fittings, e.g. caps; Fastenings therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges

Definitions

  • the invention relates to the fields of high voltage, ultra high voltage and extra high voltage power, and is mainly used as an insulation cross arm of a transmission line tower and an insulation pillar of a substation.
  • the porcelain column is used as the core rod, and the main disadvantage is that the manufacturing cost is high.
  • the seismic performance is poor;
  • the epoxy fiberglass is wound around the solid rod, and the diameter of the core rod is increased by layer by layer.
  • the main problem is high cost, air gap exists in the layered molding interface; 4.
  • Epoxy fiberglass tube Filled with insulating gas, this product must be connected with a barometer to monitor whether the gas in the pipe leaks, which increases the maintenance workload of the operation department, which is difficult for the user to accept; 5.
  • the epoxy fiberglass tube is filled with solid matter, such as the density of the filler.
  • the density of the filler is small, partial discharge may occur under long-term operation under high voltage and strong electric field.
  • the expansion and contraction coefficients of the filler and the epoxy fiberglass tube are not uniform, and the inconsistent size of the thermal expansion and contraction causes tearing of the bonding interface.
  • the filler having a small density is difficult to withstand the pressing force, and the insulating tube is subjected to a bending load and is subjected to a rounding deformation, causing the filler to be torn or crushed to be out of position, and the air gap is formed to form an internal insulation defect.
  • the present invention is directed to the above problems, and aims to provide a composite insulated cross arm and a pillar filled with a hollow insulating capsule filled with an epoxy fiberglass tube having good electrical properties, high dielectric strength, material saving, and cost reduction.
  • the product of the invention consists of the upper attachment 1, the epoxy fiberglass tube 2, the silicone rubber shed 3, the insulating support plate 4, the insulating airbag 5, the filling insulator 6 and the lower attachment 7.
  • the innovation of the invention a. After the insulating support plate 4 is installed in the epoxy fiberglass tube 2 and filled with the insulator, the leakage current and air breakdown of the inner wall of the epoxy fiberglass tube are blocked, and the epoxy glass can be supported. When the fiber tube is bent and stressed, the circular deformation is not lost, which increases the rigidity of the product and reduces the amount of bending deformation. b. Install the insulating airbag 5 in the epoxy fiberglass tube 2, which reduces the weight of the product, saves the raw materials, reduces the cost, and transfers the rounding deformation to the space inside the capsule when the epoxy fiberglass tube is bent and stressed. At the same time, due to less filler, the influence of different expansion and contraction coefficients of the two materials on the product is reduced, and the air gap formed by the interface and the solid material tearing or deformation recovery is not avoided.
  • the insulating support plate 4 is made of a hard insulating material, and the shape can be designed as a circular plate type or a ring shape according to the installation process requirement, and the diameter ⁇ 1 is the same as the inner diameter of the epoxy glass fiber tube 2, according to the needs of different voltage grade products.
  • the thickness d is 10 to 50 mm.
  • Three positioning blind holes 4-1 are respectively disposed on both sides of the insulating support plate 4.
  • the insulating airbag 5 is made of a hard or semi-rigid insulating material. According to the requirements of different voltage grade products, the outer diameter ⁇ 2 of the insulating airbag is slightly smaller than that of the epoxy fiberglass tube, so as to fill the insulator, and the height h is 1 to ⁇ 2. 5 times, three positioning pins 5-1 are provided at the upper and lower ends to facilitate positioning of the positioning blind holes during installation.
  • FIG. 1 is a schematic structural view of a composite insulated cross arm of the present invention.
  • FIG. 2 is a schematic structural view of the composite insulating pillar of the present invention.
  • FIG. 3 is a schematic structural view of an insulating support plate 4.
  • FIG. 4 is a schematic view showing the structure of the insulating airbag 5.
  • the insulating support plate 4 is produced; 2.
  • the insulating air bag 5 is made in a clean environment at a constant temperature of 20 ° C and a humidity of less than 50% to ensure that the gas in the air bag is clean and dry;
  • the epoxy fiberglass tube is placed in a special mold vulcanized silicone rubber shed 3; 4.
  • the insulating support plate 4 is mounted on the lower end of the epoxy glass tube vertically erected with the shed 3, and the positioning hole pair on the support plate
  • the positioning pin of the lower end portion of the insulating airbag 5 is filled with an appropriate amount of filling insulation, and the positioning pin hole is aligned at the upper end portion of the insulating airbag 5, and another insulating supporting plate 4 is mounted.
  • the attachment 1a and the lower attachment 7 are installed to form a composite insulation.
  • the cross arm is attached to the attachment 1b and the lower attachment 7 to form a composite insulating strut.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)

Abstract

一种环氧玻纤管内填充空心绝缘囊的复合绝缘横担和支柱，由上附件（1）、环氧玻纤管（2）、硅橡胶伞裙（3）、绝缘支撑板（4）、绝缘气囊（5）、填充绝缘物（6）和下附件（7）组成。该环氧玻纤管内填充空心绝缘囊的复合绝缘横担和支柱的创新在于：a、在环氧玻纤管（2）内安装绝缘支撑板（4）并填充绝缘物后，阻断了环氧玻纤管内壁泄漏电流和空气击穿，又可支撑环氧玻纤管弯曲受力时不失圆变形，增加了产品的刚度，减少了弯曲变形量。b、在环氧玻纤管（2）内安装绝缘气囊（5），减轻了产品重量，节省了原材料，降低了成本，又可在环氧玻纤管弯曲受力时将失圆变形转移到囊内的空间，同时由于填充物较少，减小了两种材料胀缩系数不同对产品的影响，避免了界面及固体材料撕裂或变形恢复不到位形成的气隙。

Description

环氧玻纤管内填充空心绝缘囊的复合绝缘横担和支柱 技术领域
本发明涉及高压、超高压和特高压电力领域，主要用作输电线路铁塔的绝缘横担和变电站绝缘支柱。
背景技术
目前国内外高压、超高压和特高压电力输电线路一般使用钢横担加悬式绝缘子，变电站广泛使用的绝缘支柱为瓷支柱。钢横担加悬式绝缘子使铁塔增高，线路走廊加宽。瓷支柱防污、防震效果不好，且重量重，运输成本高，安装不方便。近几年来，一些科研院所和公司研制了几种复合绝缘支柱，都存在着不尽完美之处，主要是作为承受机械负荷的芯棒存在不同的缺陷：1、以环氧玻纤挤拉棒作为芯棒，但受制造工艺限制，不能生产直径大于130mm的挤拉棒，且实心挤拉棒刚度差，弯曲变形量大；2、以瓷柱作为芯棒，主要缺点是制造成本高，抗震性能差；3、在挤拉实心棒外缠绕环氧玻纤，分多次逐层增大芯棒直径，主要问题是成本高，分层成型界面存在气隙；4、环氧玻纤管内充绝缘气体，这种产品必须外接一个气压表，用以监测管内气体是否泄漏，增加了运行部门的维护工作量，用户难以接受；5、环氧玻纤管内填充固体物，如填充物的密度大，则重量重，成本高；如填充物的密度小，则长期运行于高压强电场下可能出现局部放电。且填充物与环氧玻纤管两种材料的胀缩系数不可能一致，热胀冷缩的尺寸不一致会导致粘接界面出现撕裂。另外，密度小的填充物难以承受挤压力，绝缘管承受弯曲负荷时会失圆变形，引起填充物撕裂或挤压失圆后恢复不到位而形成气隙，形成内绝缘缺陷。
发明内容
本发明针对上述问题，旨在提供一种电气性能好，绝缘强度高，节省原材料，降低成本的环氧玻纤管内填充空心绝缘囊的复合绝缘横担和支柱。
本发明产品由上附件1、环氧玻纤管2、硅橡胶伞裙3、绝缘支撑板4、绝缘气囊5、填充绝缘物6和下附件7组成。
本发明的创新之处：a、在环氧玻纤管2内安装绝缘支撑板4并填充绝缘物后，阻断了环氧玻纤管内壁泄漏电流和空气击穿，又可支撑环氧玻纤管弯曲受力时不失圆变形，增加了产品的刚度，减少了弯曲变形量。b、在环氧玻纤管2内安装绝缘气囊5，减轻了产品重量，节省了原材料，降低了成本，又可在环氧玻纤管弯曲受力时将失圆变形转移到囊内的空间，同时由于填充物较少，减小了两种材料胀缩系数不同对产品的影响，避免了界面及固体材料撕裂或变形恢复不到位形成的气隙。
绝缘支撑板4由硬质绝缘材料制成，形状可根据安装工艺要求，设计为圆板型或圆环型，其直径Φ1与环氧玻纤管2的内径相同，根据不同电压等级产品的需要，其厚度d为10～50mm。绝缘支撑板4的两面分别设有三个定位盲孔4-1。
绝缘气囊5由硬质或半硬质绝缘材料制成，根据不同电压等级产品的需要，绝缘气囊的外径Φ2比环氧玻纤管略小，以便填充绝缘物，高度h为Φ2的1～5倍，上、下端部设有三个定位销5-1，便于安装时插入定位盲孔定位。
附图说明
附图1是本发明所述复合绝缘横担的结构示意图。
附图2是本发明所述复合绝缘支柱的结构示意图。
附图3是绝缘支撑板4的结构示意图。
附图4是绝缘气囊5的结构示意图。
具体实施方式
1、参照附图3生产绝缘支撑板4；2、参照附图4，在20℃恒温和湿度小于50％的洁净环境下，制作绝缘气囊5，保证气囊内的气体洁净而干燥；3、将环氧玻纤管置于特制的模具内硫化硅橡胶伞裙3；4、将绝缘支撑板4安装在垂直竖立带有伞裙3的环氧玻纤管内的下端，支撑板上面的定位孔对好绝缘气囊5下端部的定位销，充满适量的填充绝缘物，在绝缘气囊5的上端部对好定位销孔，安装另一块绝缘支撑板4。如此反复，直到整根环氧玻纤管内全部安装好绝缘支撑板4、绝缘气囊5，并填充绝缘物6，待填充绝缘物固化后，安装上附件1a和下附件7，即制成复合绝缘横担，安装上附件1b和下附件7，即制成复合绝缘支柱。

Claims (6)

  1. 环氧玻纤管内填充空心绝缘囊的复合绝缘横担和支柱，由上附件(1)、环氧玻纤管(2)、硅橡胶伞裙(3)、绝缘支撑板(4)、绝缘气囊(5)、填充绝缘物(6)和下附件7组成，其特征在于环氧玻纤管(2)内装有绝缘支撑板(4)、绝缘气囊(5)和填充绝缘物(6)。
  2. 根据权利要求1所述的环氧玻纤管内填充空心绝缘囊的复合绝缘横担和支柱，其特征在于绝缘支撑板(4)由硬质绝缘材料制成，支撑板的两面设有定位盲孔。
  3. 根据权利要求1或2所述的环氧玻纤管内填充空心绝缘囊的复合绝缘横担和支柱，其特征在于绝缘支撑板(4)的形状为圆型。
  4. 根据权利要求1或2所述的环氧玻纤管内填充空心绝缘囊的复合绝缘横担和支柱，其特征在于绝缘支撑板(4)的形状为圆环型。
  5. 根据权利要求1所述的环氧玻纤管内填充空心绝缘囊的复合绝缘横担和支柱，其特征在于绝缘气囊(5)由硬质或半硬质绝缘材料制成，绝缘气囊的两个端面设有定位销。
  6. 根据权利要求1所述的环氧玻纤管内填充空心绝缘囊的复合绝缘横担和支柱，其特征在于绝缘支撑板(4)的两面和绝缘气囊(5)的四周填充绝缘物(6)。
PCT/CN2015/097308 2015-04-14 2015-12-14 环氧玻纤管内填充空心绝缘囊的复合绝缘横担和支柱 WO2016165367A1 (zh)

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN108412289A (zh) * 2018-04-28 2018-08-17 华北电力科学研究院有限责任公司 一种10kV高压线路的绝缘电杆
CN111667958A (zh) * 2019-03-07 2020-09-15 西安神电(泾阳)电器有限公司 一种复合支柱绝缘子及其制造方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204695881U (zh) * 2015-04-14 2015-10-07 王伟 环氧玻纤管内填充空心绝缘囊的复合绝缘横担和支柱
CN112086248B (zh) * 2020-10-27 2022-03-29 萍乡市第五电瓷厂有限公司 一种异形瓷绝缘子及其制作工艺

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Publication number Priority date Publication date Assignee Title
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CN111667958A (zh) * 2019-03-07 2020-09-15 西安神电(泾阳)电器有限公司 一种复合支柱绝缘子及其制造方法

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