WO2021031782A1 - 一种新型绝缘拉杆 - Google Patents

一种新型绝缘拉杆 Download PDF

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Publication number
WO2021031782A1
WO2021031782A1 PCT/CN2020/103664 CN2020103664W WO2021031782A1 WO 2021031782 A1 WO2021031782 A1 WO 2021031782A1 CN 2020103664 W CN2020103664 W CN 2020103664W WO 2021031782 A1 WO2021031782 A1 WO 2021031782A1
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WO
WIPO (PCT)
Prior art keywords
pull rod
carbon fiber
rod body
conductive
groove
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Application number
PCT/CN2020/103664
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English (en)
French (fr)
Inventor
虞育号
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南京智达电气设备有限公司
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Application filed by 南京智达电气设备有限公司 filed Critical 南京智达电气设备有限公司
Publication of WO2021031782A1 publication Critical patent/WO2021031782A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details

Definitions

  • the utility model relates to a new type of insulating pull rod.
  • the glass fiber cloth is wound by dry method, and then vacuum impregnated with epoxy resin. After curing, the outer surface is processed and polished, and then painted. The partial discharge effect of the product is better;
  • the glass fiber yarn is wet-wound, after curing, the outer surface is processed and polished, and then painted.
  • Aramid fiber cloth, polyester fiber or other fiber fabrics are wound by dry method, vacuum impregnated with epoxy resin glue, and cured, the outer surface is processed and polished, and then painted.
  • the utility model provides a new type of insulated pull rod in order to solve the above-mentioned problems in the prior art.
  • the insulated pull rod of the utility model is used to operate the switch in an SF6 gas insulated switch or play a supporting role.
  • the technical scheme adopted by the utility model includes: a new type of insulated pull rod, including conductive joints, carbon fiber filaments and a pull rod body.
  • the pull rod body is formed by pultrusion after impregnation of glass fiber yarn with epoxy resin.
  • a conductive joint is fixed on the end surface, and a groove is provided at both ends of the tie rod body corresponding to the position close to the two conductive joints.
  • a section of carbon fiber filament impregnated with epoxy resin is wound in the hoop direction of each groove.
  • the carbon fiber filaments in the groove are cured to form a carbon fiber reinforced layer, and an equipotential body is formed between the carbon fiber reinforced layer at each end of the tie rod body and the conductive joint.
  • the conductive joint is made of conductive metal material.
  • the utility model has the advantages of good electrical performance, high mechanical strength, stable technology, simple processing, less pollution, low cost, etc.
  • the use of the insulating rod of the utility model can significantly reduce costs, improve electrical performance and reliability, and also reduce environmental pollution.
  • Figure 1 is a structural diagram of the utility model.
  • a new type of insulated pull rod of the present invention includes a conductive joint 1, a carbon fiber wire, and a pull rod body 3.
  • the pull rod body 3 is pultruded by glass fiber yarn impregnated with epoxy resin.
  • a conductive joint 1 is fixed on both ends, and a groove is provided at both ends of the tie rod body 3 and corresponding to the position close to the two conductive joints 1, and a section of epoxy resin impregnated is wound in the circumferential direction of each groove.
  • the carbon fiber filaments in the grooves are cured to form a carbon fiber reinforcement layer 2, and an equipotential body is formed between the carbon fiber reinforcement layer 2 at each end of the tie rod body 3 and the conductive joint 1.
  • the conductive connector 1 is made of conductive metal material, and the conductive connector 1 and the tie rod body 3 are directly bonded by glue or connected by threads.
  • the insulated pull rod body 3 of the utility model is formed by drawing and pultrusion after impregnating epoxy resin with glass fiber yarn. Due to the effect of extrusion and the glass fiber yarns are all in the same direction without crossing, the structure is compact, no bubbles, and electrical properties. Very good. At the same time, the drawing tube can be pultruded to any length, and the product can be cut as needed.
  • the outer circle has high precision and the surface does not need to be processed, so the cost is low, there is no processing waste problem, and it will not pollute the environment.
  • the utility model grinds a section of grooves at both ends of the tie rod body 3 and close to the conductive joints 1 at both ends, and a section of epoxy-impregnated high-strength carbon fiber is circumferentially wound in the groove.
  • Carbon fiber has high strength, but it is not an insulator and has a certain degree of conductivity, so it cannot be used on insulators, but there is no problem here.
  • the conductive fiber layer will form a layer with the inner side of the conductive joint 1 at both ends.
  • the electric potential body makes the electric field distribution more uniform, so acting here will not affect the electrical performance. Because the two ends are fixed by high-strength carbon fibers that are wound in a circular direction, the mechanical strength here is very high.
  • the carbon fiber yarn in the present invention can also be replaced by glass fiber yarn, and the installation method is the same as that of the carbon fiber yarn, which can constitute the second embodiment of the present invention.
  • the use of the insulated pull rod of the utility model can significantly reduce the cost, improve the electrical performance and reliability, and also reduce environmental pollution.

Abstract

一种绝缘拉杆，包括导电接头（1）、碳纤维丝和拉杆本体（3），拉杆本体（3）由玻璃纤维纱浸渍环氧树脂后引拔拉挤成型，在拉杆本体（3）的两端面上均固定一个导电接头（1），在拉杆本体（3）的两端且对应靠近两导电接头（1）的位置处均设置一凹槽，在每个凹槽的环向方向上缠绕一段浸渍环氧树脂的碳纤维丝，凹槽内的碳纤维丝固化后形成碳纤维加强层（2），拉杆本体（3）每端的碳纤维加强层（2）与导电接头（1）之间形成一个等电位体。该绝缘拉杆具有电气性能好，机械强度高，工艺稳定，加工简单，污染少，成本低等优点。

Description

一种新型绝缘拉杆 技术领域：
本实用新型涉及一种新型绝缘拉杆。
背景技术：
目前绝缘拉杆成型方式有以下三种：
1、玻璃纤维布干法缠绕，然后真空浸渍环氧树脂胶，固化后外表面加工打磨，然后上漆制成。制品的局放效果比较好；
2、玻璃纤维纱湿法缠绕，固化后外表面加工打磨、然后上漆制成。
3、芳纶纤维布、涤纶纤维或者其他纤维类布料干法缠绕，真空浸渍环氧树脂胶，固化后外表面加工打磨、然后上漆制成。
以上任何一种方式，对工艺要求都比较高，达到相应的电气性能比较困难，而且成型后加工工艺复杂，加工余屑也易污染，制造成本比较高。目前，国际上也仅有少数几家国外大型公司可以生产，国内高端产品只能依赖进口。
发明内容：
本实用新型是为了解决上述现有技术存在的问题而提供一种新型绝缘拉杆，本实用新型绝缘拉杆用于SF6气体绝缘开关中操作开关动作或者起支撑作用。
本实用新型所采用的技术方案有：一种新型绝缘拉杆，包括导电接头、碳纤维丝和拉杆本体，所述拉杆本体由玻璃纤维纱浸渍环氧树脂后引拔拉挤成型，在拉杆本体的两端面上均固定一个导电接头，在拉杆本体的两端且对应靠近两导电接头的位置处均设置一凹槽，在每个凹槽的环向方向上缠绕一段浸渍环氧树脂的碳纤维丝，凹槽内的碳纤维丝固化后形成碳纤维加强层，所述拉杆本体每端的碳纤维加强层与导电接头之间形成一个等电位体。
进一步地，所述导电接头采用导电的金属材料制成。
本实用新型具有如下有益效果：
1)本实用新型具有电气性能好，机械强度高，工艺稳定，加工简单，污染少，成本低等优点。
2)采用本实用新型绝缘拉杆可显著降低成本，提高电气性能和可靠性，同时也可减少环境污染。
附图说明：
图1为本实用新型结构图。
具体实施方式：
下面结合附图对本实用新型作进一步的说明。
如图1所示，本实用新型一种新型绝缘拉杆，包括导电接头1、碳纤维丝和拉杆本体3，拉杆本体3由玻璃纤维纱浸渍环氧树脂后引拔拉挤成型，在拉杆本体3的两端面上均固定一个导电接头1，在拉杆本体3的两端且对应靠近两导电接头1的位置处均设置一凹槽，在每个凹槽的环向方向上缠绕一段浸渍环氧树脂的碳纤维丝，凹槽内的碳纤维丝固化后形成碳纤维加强层2，拉杆本体3每端的碳纤维加强层2与导电接头1之间形成一个等电位体。
本实用新型中导电接头1采用导电的金属材料制成，导电接头1与拉杆本体3之间通过胶直接粘接或者通过螺纹连接。
本实用新型中绝缘的拉杆本体3由玻璃纤维纱浸渍环氧树脂后引拔拉挤成型，由于挤压的效果而且玻璃纤维纱都在同一方向，无交叉，所以结构致密，无气泡，电气性能很好，同时引拔管可拉挤任意长度，产品可按需要切割即可，外圆精度高，表面无需加工，因此成本低，无加工废料问题，不会污染环境。
但因没有环向的纤维层固定，因此玻璃纤维引拔管存在开裂的风险，而且易出现贯穿性的开裂，造成两端联接头滑落，引发事故。且在日常操作过程中，绝缘拉杆会承受拉力、扭曲、抗弯、震动，这样会导致开裂的几率更很高。
为克服该缺陷，本实用新型在拉杆本体3的两端且靠近两端导电接头1的位置处打磨出一段凹槽，在凹槽内环向缠绕上一段浸渍环氧的高强度碳素纤维。碳素纤维强度很高，但不是绝缘体，有一定的导电性，所以无法用在绝缘件上，但在此处没有问题，带 有导电性的纤维层会同两端导电接头1的内侧形成一个等电位体，使得电场分布更均匀，因此作用在此处不会影响电气性能。因为两端有环向缠绕的高强度碳素纤维固定，使得此处机械强度很高，即便玻璃纤引拔管出现贯穿性的开裂，导电接头与玻璃纤引拔管也不会出现分离、脱落而造成事故。而整个绝缘拉杆由于运行在SF6气体中，纵向开裂是不会影响电气性能，抗弯强度、拉伸强度也不会受影响。
本实用新型中的碳纤维丝还可以采用玻璃纤维纱代替，其安装方式与碳纤维丝的安装方式相同，由此可以构成本实用新型的第二个实施例。
采用本实用新型绝缘拉杆可显著降低成本，提高电气性能和可靠性，同时也可减少环境污染。
以上所述仅是本实用新型的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本实用新型原理的前提下还可以作出若干改进，这些改进也应视为本实用新型的保护范围。

Claims (2)

  1. 一种新型绝缘拉杆，其特征在于：包括导电接头(1)、碳纤维丝和拉杆本体(3)，所述拉杆本体(3)由玻璃纤维纱浸渍环氧树脂后引拔拉挤成型，在拉杆本体(3)的两端面上均固定一个导电接头(1)，在拉杆本体(3)的两端且对应靠近两导电接头(1)的位置处均设置一凹槽，在每个凹槽的环向方向上缠绕一段浸渍环氧树脂的碳纤维丝，凹槽内的碳纤维丝固化后形成碳纤维加强层(2)，所述拉杆本体(3)每端的碳纤维加强层(2)与导电接头(1)之间形成一个等电位体。
  2. 如权利要求1所述的新型绝缘拉杆，其特征在于：所述导电接头(1)采用导电的金属材料制成。
PCT/CN2020/103664 2019-08-16 2020-07-23 一种新型绝缘拉杆 WO2021031782A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN210926909U (zh) * 2019-08-16 2020-07-03 南京智达电气设备有限公司 一种新型绝缘拉杆

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11126545A (ja) * 1997-10-22 1999-05-11 Mitsubishi Electric Corp ガス遮断器
CN201820650U (zh) * 2010-07-30 2011-05-04 卫爱静 一种应用于高压断路器上的高压绝缘拉杆
CN106741835A (zh) * 2016-12-29 2017-05-31 中国航天空气动力技术研究院 一种复材金属一体化拉杆及其成型方法
CN210926909U (zh) * 2019-08-16 2020-07-03 南京智达电气设备有限公司 一种新型绝缘拉杆

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11126545A (ja) * 1997-10-22 1999-05-11 Mitsubishi Electric Corp ガス遮断器
CN201820650U (zh) * 2010-07-30 2011-05-04 卫爱静 一种应用于高压断路器上的高压绝缘拉杆
CN106741835A (zh) * 2016-12-29 2017-05-31 中国航天空气动力技术研究院 一种复材金属一体化拉杆及其成型方法
CN210926909U (zh) * 2019-08-16 2020-07-03 南京智达电气设备有限公司 一种新型绝缘拉杆

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