WO2013000310A1 - 干燥高压力空气或氮气绝缘真空灭弧室的内外波纹管结构 - Google Patents

干燥高压力空气或氮气绝缘真空灭弧室的内外波纹管结构 Download PDF

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Publication number
WO2013000310A1
WO2013000310A1 PCT/CN2012/073402 CN2012073402W WO2013000310A1 WO 2013000310 A1 WO2013000310 A1 WO 2013000310A1 CN 2012073402 W CN2012073402 W CN 2012073402W WO 2013000310 A1 WO2013000310 A1 WO 2013000310A1
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Prior art keywords
nitrogen
dry
pressure air
corrugated
conductive rod
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PCT/CN2012/073402
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English (en)
French (fr)
Inventor
刘志远
耿英三
王建华
张胜
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西安交通大学
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Publication of WO2013000310A1 publication Critical patent/WO2013000310A1/zh

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66Vacuum switches
    • H01H33/662Housings or protective screens
    • H01H33/66238Specific bellows details

Definitions

  • the invention relates to the technical field of electrical components, in particular to an inner and outer bellows structure of a dry high pressure air or nitrogen insulated vacuum interrupter.
  • the inner bellows structure of the vacuum interrupter is usually connected to the side wall of the movable conductive rod in the vacuum interrupter chamber at one end of the corrugated arc chamber, and the other end of the bellows is connected with the end cover of the vacuum interrupter.
  • the moving conductive rods perform the opening movement, causing the bellows to contract.
  • the bellows shrink without any problem.
  • the outer bellows structure can effectively solve the problem of cracking when the bellows shrinks under high air pressure, but the structure has three shortcomings: First, the structure of the structure is not as simple and reliable as the inner bellows structure; The structure needs to be modified to the existing process. Thirdly, the structure will exert a large force on the movable end cover of the vacuum interrupter when the moving rod is moving at a high speed, so that the vacuum interrupter may leak during operation. Serious consequences. Summary of the invention
  • the object of the present invention is to provide an inner and outer bellows structure for drying a high pressure air or nitrogen insulated vacuum interrupter, which avoids that the air pressure in the bellows may reach three to six atmospheric pressure bellows.
  • the outer corrugated pipe structure proposed by Japan may not be as simple and reliable as the inner corrugated pipe structure, and needs to be modified by the existing process and will have a large force when the moving rod is moved at a high speed.
  • the end cap is closed so that it can be operated.
  • the inner bellows is kept at two atmospheric pressures due to the internal gas pressure during the opening movement, and is not damaged by the dry high pressure air or nitrogen.
  • the inner bellows avoids the serious consequences of damage to electrical equipment components, is not easy to wear, has long service life and good stability.
  • An inner and outer bellows structure of a dry high pressure air or nitrogen insulated vacuum interrupter comprising a vacuum high pressure air or nitrogen insulated vacuum interrupter 1 and surrounded by a dry high pressure air or nitrogen insulated vacuum interrupter 1
  • the inner bellows 2 of the movable conductive rod 3 one end of which is connected to the side wall of the movable conductive rod 3 in the vacuum high-pressure air or nitrogen insulated vacuum interrupter 1 by means of hermetic welding, The other end is also connected to the inner end of the end cap 4 of the movable high-pressure air or nitrogen-insulated vacuum interrupter 1 by means of sealing welding, and is further extended after drying the high-pressure air or nitrogen-insulated vacuum interrupter 1
  • the movable conductive rod 3 is partially surrounded by the outer bellows 5, and one end of the outer bellows 5 is connected to the side wall of the externally elongated movable conductive rod 3 by sealing welding, and the other end of the outer bellows 5 and the drying height are high.
  • the outer end of the end cover 4 of the moving end of the pressurized air or nitrogen insulated vacuum interrupter 1 is connected by sealing welding, the inner bellows 2, the end cover 4 and the outer bellows 5 And the movable conductive rod 3 forms a closed space, the gas pressure in the enclosed space of two atmospheres or less.
  • the inner and outer bellows structure of the dry high pressure air or nitrogen insulated vacuum interrupter extends the outer elongated end of the movable conductive rod 3 into the hollow bottom support 6 in an inverted manner, and the outer corrugation
  • One end of the tube 5 is connected to the side wall of the bottom support 6 by means of sealing welding for replacing one end of the outer bellows 5 by sealing welding to connect the side wall of the externally elongated movable conductive rod 3, the closed space It consists of an inner bellows 2, an end cap 4, an outer bellows 5, a movable conducting rod 3 and a bottom support 6.
  • Figure 1 is a schematic cross-sectional view of the present invention.
  • Fig. 2 is a cross-sectional structural view showing the structure of the inner and outer bellows of the dry high pressure air or nitrogen insulated vacuum interrupter of the present invention in an inverted form.
  • the inner and outer bellows structure of the dry high-pressure air or nitrogen-insulated vacuum interrupter is included in the dry high-pressure air or nitrogen-insulated vacuum interrupter 1 and is surrounded by dry high-pressure air or nitrogen-insulated vacuum.
  • An inner bellows 2 of the movable conductive rod 3 in the arc chamber 1 one end of the inner bellows 2 is insulated from the side wall of the movable conductive rod 3 in the vacuum interrupter 1 by dry welding with high-pressure air or nitrogen
  • the other end is also connected to the inner end of the end cap 4 of the movable high-pressure air or nitrogen-insulated vacuum interrupter 1 by means of sealing welding, and in the dry high-pressure air or nitrogen-insulated vacuum interrupter 1
  • the outer elongated conductive rod 3 is partially surrounded by the outer bellows 5, and one end of the outer bellows 5 is connected to the side wall of the outer elongated moving conductive rod 3 by sealing welding, and the outer bellows 5 is further One end and the outer end of the end cap 4 of the mov
  • the inner and outer bellows structure of the dry high-pressure air or nitrogen-insulated vacuum interrupter extends the outer elongated end of the movable conductive rod 3 into the hollow bottom support 6 in an inverted manner.
  • one end of the outer bellows 5 is connected to the side wall of the bottom support 6 by means of sealing welding for replacing one end of the outer bellows 5 by sealing welding to connect the side wall of the outer elongated dynamic conductive rod 3.
  • the enclosed space is composed of an inner bellows 2, an end cover 4, an outer bellows 5, a movable conductive rod 3 and a bottom support 6.
  • the working principle of the invention is as follows: When the closing action of the movable conductive rod 3 of the dry high-pressure air or nitrogen-insulated vacuum interrupter 1 drives the inner bellows 2 to stretch, simultaneously the outer bellows 5 is synchronously contracted, so that the inside of the closed space is closed.
  • the gas pressure is below two atmospheric pressures, and the outer surface of the outer bellows 5 will dry dry high pressure air or nitrogen from the outer surface of the outer bellows 5, without damaging the outer bellows 5, thus the inner bellows 2 and the outer bellows 5 can work normally; and when the open high-pressure air or nitrogen-insulated vacuum interrupter 1 of the movable conductive rod 3 is opened, the inner bellows 2 is compressed, and simultaneously the outer bellows 5 is simultaneously extended.
  • the gas pressure inside the closed space is still below two atmospheric pressures, and the outer bellows 5 is only the outer surface rather than the inner surface subjected to the high pressure of the high pressure air or nitrogen, so that the inner bellows 2 and the outer bellows 5 can be normal. jobs.

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  • Gas-Insulated Switchgears (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

一种干燥高压力空气或氮气绝缘真空灭弧室的内外波纹管结构,该干燥高压力空气或氮气绝缘真空灭弧室外部伸长后的动导电杆部分的侧壁上密封焊接连接外波纹管的一端,或在干燥高压力空气或氮气绝缘真空灭弧室底部支座密封焊接连接外波纹管的一端,而外波纹管的另一端和干燥高压力空气或氮气绝缘真空灭弧室动端的端盖外端部密封焊接连接,并结合干燥高压力空气或氮气绝缘真空灭弧室内部的内波纹管,实现了在内波纹管做分闸运动时由于内部气体压力保持了两个大气压以下,不至于被干燥高压力空气或氮气所损坏,保护了内波纹管,避免了电器设备元件受损的严重后果,不易磨损而使用寿命长且稳定性好。

Description

干燥高压力空气或氮气绝缘真空灭弧室的内外波紋管结构 技术领域
本发明涉及电器元件技术领域, 具体涉及一种干燥高压力空气或氮气绝缘 真空灭弧室的内外波紋管结构。
背景技术
目前真空灭弧室的内波紋管结构, 通常是设置在真空灭弧室内部的波紋管 一端与真空灭弧室内的动导电杆侧壁连接, 波紋管另外一端与真空灭弧室的端 盖连接, 当触头分开时, 动导电杆做分闸运动, 引起波紋管收缩。 这样的波紋 管结构在波紋管内气体压力为一个大气压左右时, 波紋管收缩没任何问题。 但 是当真空灭弧室外绝缘采用干燥高压力空气或氮气时, 此时为了满足绝缘要求, 波紋管内气压可能会达到三到六个大气压, 波紋管压缩时可能会破裂, 由此引 发真空灭弧室漏气报废电力系统非正常停运的严重后果。 日本提出外波紋管结 构可有效解决高气压下波紋管收缩时的破裂问题, 但该结构有三点不足之处: 一是该结构对动导电杆的导向不如内波紋管结构简单可靠; 二是该结构需要对 现有工艺进行改动, 三是该结构在动导电杆高速运动时会将很大的力作用在真 空灭弧室动端端盖上, 从而在运行中可能出现真空灭弧室漏气的严重后果。 发明内容
为了克服上述现有技术存在的不足, 本发明的目的在于提供一种干燥高压 力空气或氮气绝缘真空灭弧室的内外波紋管结构, 避免了波紋管内气压可能会 达到三到六个大气压波紋管压缩时可能会破裂、 日本提出的外波紋管结构对动 导电杆的导向不如内波紋管结构简单可靠、 且需要对现有工艺进行改动以及在 动导电杆高速运动时会将很大的力作用在真空灭弧室动端端盖从而在运行中可 能出现真空灭弧室漏气的严重后果的缺点, 实现了在内波紋管做分闸运动时由 于内部气体压力保持了两个大气压以下, 不至于被干燥高压力空气或氮气所损 坏, 保护了内波紋管, 避免了电器设备元件受损的严重后果, 不易磨损而使用 寿命长且稳定性好。
为了达到上述目的, 本发明所采用的技术方案是:
一种干燥高压力空气或氮气绝缘真空灭弧室的内外波紋管结构, 包括设置 在干燥高压力空气或氮气绝缘真空灭弧室 1 内部且环绕干燥高压力空气或氮气 绝缘真空灭弧室 1内的动导电杆 3的内波紋管 2,该内波紋管 2的一端通过密封 焊接的方式与干燥高压力空气或氮气绝缘真空灭弧室 1 内的动导电杆 3部分的 侧壁相连接, 其另一端也通过密封焊接的方式与干燥高压力空气或氮气绝缘真 空灭弧室 1动端的端盖 4内端部相连接, 另外在干燥高压力空气或氮气绝缘真 空灭弧室 1外部伸长后的动导电杆 3部分被外波紋管 5环绕, 外波紋管 5的一 端通过密封焊接的方式连接该外部伸长后的动导电杆 3 的侧壁, 而外波紋管 5 的另一端和干燥高压力空气或氮气绝缘真空灭弧室 1动端的端盖 4外端部通过 密封焊接方式相连接, 所述的内波紋管 2、 端盖 4、 外波紋管 5以及动导电杆 3 形成了封闭空间, 该封闭空间内的气体压力为两个大气压以下。
所述的干燥高压力空气或氮气绝缘真空灭弧室的内外波紋管结构以倒置的 形式将动导电杆 3外部伸长的端部伸入中空的底部支座 6内, 另外所述的外波 紋管 5的一端通过密封焊接的方式连接底部支座 6侧壁用以替代外波紋管 5的 一端通过密封焊接的方式连接该外部伸长后的动导电杆 3 的侧壁, 所述的封闭 空间由内波紋管 2、 端盖 4、 外波紋管 5、 动导电杆 3以及底部支座 6构成。
利用在干燥高压力空气或氮气绝缘真空灭弧室 1外部伸长后的动导电杆 3 部分的侧壁上密封焊接连接外波紋管 5的一端, 或在干燥高压力空气或氮气绝 缘真空灭弧室底部支座 6密封焊接连接外波紋管的一端, 而外波紋管 5的另一 端和干燥高压力空气或氮气绝缘真空灭弧室 1动端的端盖 4外端部密封焊接连 接, 并结合干燥高压力空气或氮气绝缘真空灭弧室 1内部的内波紋管 2, 由此内 波紋管 2、 端盖 4、 外波紋管 5以及动导电杆 3或者内波紋管 2、 端盖 4、 外波 紋管 5、动导电杆 3以及底部支座 6形成的封闭空间内的气体压力为两个大气压 以下, 在内波紋管 2做分闸运动时由于内部气体压力保持了两个大气压以下, 不至于被干燥高压力空气或氮气所损坏,保护了内波紋管 2, 避免了电器设备元 件受损的严重后果, 不易磨损而使用寿命长且稳定性好。
附图说明
图 1是本发明的剖视结构示意图。
图 2是本发明的干燥高压力空气或氮气绝缘真空灭弧室的内外波紋管结构 以倒置的形式的剖视结构示意图。
具体实施方式
下面结合附图对本发明作更详细的说明。
如图 1所示, 干燥高压力空气或氮气绝缘真空灭弧室的内外波紋管结构, 包括设置在干燥高压力空气或氮气绝缘真空灭弧室 1 内部且环绕干燥高压力空 气或氮气绝缘真空灭弧室 1内的动导电杆 3的内波紋管 2,该内波紋管 2的一端 通过密封焊接的方式与干燥高压力空气或氮气绝缘真空灭弧室 1内的动导电杆 3 部分的侧壁相连接而其另一端也通过密封焊接的方式与干燥高压力空气或氮气 绝缘真空灭弧室 1动端的端盖 4内端部相连接, 另外在干燥高压力空气或氮气 绝缘真空灭弧室 1外部伸长后的动导电杆 3部分被外波紋管 5环绕,外波紋管 5 的一端通过密封焊接的方式连接该外部伸长后的动导电杆 3 的侧壁, 而外波紋 管 5的另一端和干燥高压力空气或氮气绝缘真空灭弧室 1动端的端盖 4外端部 通过密封焊接方式相连接, 所述的内波紋管 2、 端盖 4、 外波紋管 5以及动导电 杆 3形成了封闭空间, 该封闭空间内的气体压力为两个大气压以下。
如图 2所示, 所述的干燥高压力空气或氮气绝缘真空灭弧室的内外波紋管 结构以倒置的形式将动导电杆 3外部伸长的端部伸入中空的底部支座 6内, 另 外所述的外波紋管 5的一端通过密封焊接的方式连接底部支座 6侧壁用以替代 外波紋管 5的一端通过密封焊接的方式连接该外部伸长后的动导电杆 3的侧壁, 所述的封闭空间由内波紋管 2、 端盖 4、 外波紋管 5、 动导电杆 3以及底部支座 6构成。
本发明的工作原理是: 当干燥高压力空气或氮气绝缘真空灭弧室 1 的动导 电杆 3合闸运动带动内波紋管 2伸展时, 同时带动外波紋管 5同步收缩, 这样 封闭空间内部的气体压力为两个大气压以下, 而外波紋管 5 的外表面就会把干 燥高压力空气或氮气从外波紋管 5的外表面凹处挤出,不会损坏外波紋管 5, 因 此内波紋管 2和外波紋管 5都能正常工作; 而当干燥高压力空气或氮气绝缘真 空灭弧室 1的动导电杆 3分闸运动带动内波紋管 2压缩时,同时带动外波紋管 5 同步伸展, 这样封闭空间内部的气体压力仍为两个大气压以下, 而外波紋管 5 只是外表面而不是内表面所承受干燥高压力空气或氮气的气压,从而内波紋管 2 和外波紋管 5都能正常工作。

Claims

1、 一种干燥高压力空气或氮气绝缘莨空火弧室的内外波紋 ΐ?结构, 包括设 置在干燥高压力空气或氮气绝缘莨空火弧室(1) 内部且环绕干燥高压力空气或 氮气绝缘莨空火弧室 (1) 内的动导电杆 G) 的内波紋 ΐ? (2), 其特征在于: 该内波紋 ΐ? (2) 的一端通过密封焊接的方式与干燥高压力空气或氮气绝缘莨空 火弧室 (1) 内的动导电杆 (3) 部分的侧¾相迮接而其另一端也通过密封焊接 的方式与干燥高压力空气或氮气绝缘莨空火弧室 (1) 动端的端盖 (4) 内端部 相迮接, 另外在干燥高压力空气或氮气绝缘莨空火弧室(1)外部伸长后的动导 电杆 (3) 部分被外波紋 ΐ? (5)环绕, 外波紋 ΐ? (5) 的一端通过密封焊接的方 式迮接该外部伸长后的动导电杆 (3) 的侧 ¾, 而外波紋 ΐ? (5) 的另一端和干 燥高压力空气或氮气绝缘莨空火弧室 (1) 动端的端盖 (4) 外端部通过密封焊 接方式相迮接, 所述的内波紋 ΐ? (2)、 端盖(4)、 外波紋管 (5) 以及动导电杆
(3) 形成了封闭空间, 该封闭空间内的气体压力为两个大气压以下。
2、根据权利要求 1所述的干燥高压力空气或氮气绝缘莨空火弧室的内外波 紋 ΐ?结构, 其特征在于: 所述的干燥高压力空气或氮气绝缘莨空火弧室的内外 波紋 ΐ?结构以倒置的形式将动导电杆 G)外部伸长的端部伸入屮空的底部支座
(6) 内, 另外所述的外波紋 ΐ? (5) 的一端通过密封焊接的方式迮接底部支座 (6) 侧¾用以替代外波紋 ΐ? (5) 的一端通过密封焊接的方式迮接该外部伸长 后的动导电杆 G) 的侧 ¾, 所述的封闭空间由内波紋 ΐ? (2)、 端盖(4)、 外波 紋 ΐ? (5)、 动导电杆 (3) 以及底部支座 (6) 构成。
PCT/CN2012/073402 2011-06-30 2012-03-31 干燥高压力空气或氮气绝缘真空灭弧室的内外波纹管结构 WO2013000310A1 (zh)

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CN201110182538A CN102306587A (zh) 2011-06-30 2011-06-30 干燥高压力空气或氮气绝缘真空灭弧室的内外波纹管结构

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CN102306587A (zh) * 2011-06-30 2012-01-04 西安交通大学 干燥高压力空气或氮气绝缘真空灭弧室的内外波纹管结构
CN112366113B (zh) * 2020-11-02 2022-04-05 西安交通大学 高气体压力下真空灭弧室波纹管的保护结构及工作方法
CN113035635B (zh) * 2020-12-18 2022-09-20 国网宁夏电力有限公司电力科学研究院 一种波纹管保护气室
CN112951645A (zh) * 2021-01-28 2021-06-11 中国人民解放军海军工程大学 一种充气式直流灭弧室
CN114783819A (zh) * 2022-05-19 2022-07-22 山东泰开成套电器有限公司 一种35kV环保气体绝缘开关柜用真空断路器及其使用方法
CN115841928B (zh) * 2022-12-15 2023-10-31 江苏省埃迪机电设备实业有限公司 一种多用途超高压断路器复合波纹管组件

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