WO2011127667A1 - 双断口真空灭弧室 - Google Patents

双断口真空灭弧室 Download PDF

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Publication number
WO2011127667A1
WO2011127667A1 PCT/CN2010/072105 CN2010072105W WO2011127667A1 WO 2011127667 A1 WO2011127667 A1 WO 2011127667A1 CN 2010072105 W CN2010072105 W CN 2010072105W WO 2011127667 A1 WO2011127667 A1 WO 2011127667A1
Authority
WO
WIPO (PCT)
Prior art keywords
double
arc extinguishing
vacuum arc
extinguishing chamber
vacuum interrupter
Prior art date
Application number
PCT/CN2010/072105
Other languages
English (en)
French (fr)
Inventor
刘箭飞
魏杰
杨冬梅
谢国良
刘志远
Original Assignee
北京双杰电气股份有限公司
西安交通大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京双杰电气股份有限公司, 西安交通大学 filed Critical 北京双杰电气股份有限公司
Priority to EP10846310.0A priority Critical patent/EP2560179A4/en
Publication of WO2011127667A1 publication Critical patent/WO2011127667A1/zh

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Classifications

    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66276—Details relating to the mounting of screens in vacuum switches
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66284—Details relating to the electrical field properties of screens in vacuum switches

Definitions

  • the invention relates to a vacuum interrupter, in particular to a double-break vacuum interrupter.
  • the commonly used vacuum interrupter is mostly single-break.
  • Let a long gap be divided into n parts, each gap has a length of dn, and the total length of the gap is d n X dn.
  • the maximum voltage that can be withstood on each gap may not be equal.
  • the total breakdown voltage will be determined by the gap that is subjected to the maximum electric field Emax. As long as n fractures do not break at the same time, the vacuum gap will Has reliable pressure resistance.
  • the multi-gap effect can be used to improve the overall electric field distribution inside the vacuum interrupter.
  • a double-fracture vacuum interrupter comprising an insulating housing, a static assembly and a moving assembly disposed in the insulating housing, wherein the insulating housing has a rib on the upper portion of the inner cavity
  • An intermediate isolation shield is disposed between the static component and the movable component, and the intermediate isolation shield is a ring.
  • the double-break vacuum interrupter of the present invention wherein the intermediate isolation shield is disposed at an upper portion of the rib, and the intermediate isolation shield and the rib are provided with an upper and lower cross section Barrel support.
  • the double-fracture vacuum interrupter of the present invention is provided with a circular intermediate shielding shield on the upper rib of the inner cavity of the insulating casing, and the vacuum interrupting chamber is changed from a single fracture to a double fracture, and the vacuum gap is One becomes two. Setting the double fracture can transfer the maximum field strength from the contact gap to the gap between the intermediate isolation shield and the static isolation shield or the ground isolation shield, improving the electric field stress of the main isolation gap. Increase the static breakdown voltage of the vacuum interrupter.
  • Figure 1 is a schematic view showing the structure of a double-break vacuum interrupter of the present invention.
  • FIG. 1 a schematic structural view of the double-fracture vacuum interrupter of the present invention, including an insulating casing 1 and being disposed in insulation.
  • the static assembly 2 and the movable assembly 3 in the outer casing 1 , the upper portion of the rib 11 on the upper portion of the inner cavity of the insulating outer casing 1 is provided with a barrel-shaped support 5 having a small upper and lower cross section, and a ring is arranged on the barrel support 5
  • the intermediate isolation shield 4 has an intermediate isolation shield 4 located below the static assembly 2 and above the moving assembly 3.
  • the double-break vacuum interrupter of the present invention is provided with a circular intermediate shielding shield 4 on the upper rib 11 of the inner cavity of the insulating casing 1, so that the vacuum interrupting chamber is changed from a single fracture to a double fracture, and the vacuum gap is composed of one Change to two, set the double fracture to transfer the maximum field strength from the contact gap to the gap between the intermediate isolation shield and the static isolation shield or the ground isolation shield, improving the electric field stress of the main isolation gap and improving Static breakdown voltage of the vacuum interrupter.
  • the double-break vacuum interrupter of the invention is mainly applied to a fully-closed solid ring network cabinet, which improves the electric field stress of the main isolation gap and improves the static breakdown voltage of the vacuum interrupter, thereby having high industrial applicability.

Landscapes

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

Description

双断口真空灭弧室
技术领域
本发明涉及一种真空灭弧室， 尤指一种双断口真空灭弧室。
背景技术
常用的真空灭弧室多为单断口， 真空灭弧室的绝缘性与断口间隙的关系为： Vb=a*dm， 其 中 d为间隙， &和!!1为常数， m< l， 这就是说真空灭弧室的绝缘性能不是随着真空间隙长度增加 而线性增长，存在饱和效应，而利用多个真空间隙串联形成的多间隙效应（Multi-gap Effect ) 可以提高整体工作电压。 设一个长间隙被分成 n 部分， 每个间隙的长度为 dn， 则间隙总长度 d=n X dn。 对于多间隙系统， 每个间隙上能过承受的最大电压可能不相等， 总的击穿电压将由 承受最大电场 Emax 的间隙决定， 只要某一时刻 n 个断口没有同时发生击穿， 真空间隙就会有 可靠的耐压性能。 利用多间隙效应可改善真空灭弧室内部的整体电场分布。
发明内容
本发明的目的在于提供一种双断口真空灭弧室， 其可以提高真空灭弧室内的静态击穿电 压。
为了实现上述目的， 本发明的技术解决方案为： 一种双断口真空灭弧室， 包括绝缘外壳、 设置在绝缘外壳内的静组件和动组件， 其中所述绝缘外壳内腔上部的凸棱上设置有中间隔离 屏蔽罩， 所述中间隔离屏蔽罩位于静组件与动组件之间， 所述中间隔离屏蔽罩为圆环。
本发明双断口真空灭弧室， 其中所述中间隔离屏蔽罩设置于所述凸棱上部， 且所述中间 隔离屏蔽罩与所述凸棱之间设有截面为弧形的上小下大的桶形支撑。
采用上述方案后， 本发明双断口真空灭弧室通过在绝缘外壳内腔上部凸棱上设置圆环形 的中间隔离屏蔽罩， 真空灭弧室内腔由单断口变为双断口， 其真空间隙由一个变为两个， 设 置双断口可以把最大场强由触头间隙转移到中间隔离屏蔽罩与静端隔离屏蔽罩或接地隔离屏 蔽罩之间的间隙上， 改善了主隔离间隙的电场应力， 提高真空灭弧室的静态击穿电压。
附图说明
图 1是本发明双断口真空灭弧室的结构示意图。
下面结合附图， 通过实施例对本发明做进一步的说明；
具体实施方式
请参阅图 1所示本发明双断口真空灭弧室的结构示意图， 包括绝缘外壳 1、 设置在绝缘 外壳 1内的静组件 2和动组件 3， 绝缘外壳 1内腔上部的凸棱 11上部设有截面为弧形的上小 下大的桶形支撑 5， 在桶形支撑 5上设有圆环形的中间隔离屏蔽罩 4， 中间隔离屏蔽罩 4位于 静组件 2下方及动组件 3上方。
本发明双断口真空灭弧室通过在绝缘外壳 1内腔上部凸棱 11上设置圆环形的中间隔离屏 蔽罩 4， 使得真空灭弧室内腔由单断口变为双断口， 其真空间隙由一个变为两个， 设置双断口 可以把最大场强由触头间隙转移到中间隔离屏蔽罩与静端隔离屏蔽罩或接地隔离屏蔽罩之间 的间隙上， 改善了主隔离间隙的电场应力， 提高真空灭弧室的静态击穿电压。
以上所述的实施例仅仅是对本发明的优选实施方式进行描述， 并非对本发明的范围进行 限定， 在不脱离本发明设计精神的前提下， 本领域普通工程技术人员对本发明的技术方案作 出的各种变形和改进， 均应落入本发明的权利要求书确定的保护范围内。
工业实用性
本发明双断口真空灭弧室， 主要应用于全封闭固体环网柜上， 其改善了主隔离间隙的电 场应力， 提高了真空灭弧室的静态击穿电压， 因此具有很高的工业实用性。

Claims

权 利 要 求
1、 一种双断口真空灭弧室， 包括绝缘外壳（1) 、 设置在绝缘外壳 （1) 内的静组件 （2) 和动组件 （3) ， 其特征在于： 所述绝缘外壳 （1) 内腔上部的凸棱 （11) 上设置有中间隔离 屏蔽罩 （4) ， 所述中间隔离屏蔽罩 （4) 位于静组件 （2) 与动组件 （3) 之间， 所述中间隔 离屏蔽罩 （4) 为圆环。
2、 如权利要求 1所述的双断口真空灭弧室， 其特征在于： 所述中间隔离屏蔽罩 （4) 设 置于所述凸棱 （11)上部， 且所述中间隔离屏蔽罩 （4)与所述凸棱 （11)之间设有截面为弧 形的上小下大的桶形支撑 （5) 。
PCT/CN2010/072105 2010-04-15 2010-04-23 双断口真空灭弧室 WO2011127667A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10846310.0A EP2560179A4 (en) 2010-04-15 2010-04-23 DOUBLE SWITCHED VACUUM ARC EXTINGUISHING CHAMBER

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010147463.2 2010-04-15
CN 201010147463 CN101894706A (zh) 2010-04-15 2010-04-15 双断口真空灭弧室

Publications (1)

Publication Number Publication Date
WO2011127667A1 true WO2011127667A1 (zh) 2011-10-20

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EP (1) EP2560179A4 (zh)
CN (1) CN101894706A (zh)
WO (1) WO2011127667A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103035441A (zh) * 2012-12-17 2013-04-10 大连理工大学 一字型串联短间隙双断口真空灭弧室
CN103198970B (zh) * 2013-03-20 2015-03-18 上海华明电力设备制造有限公司 双断口结构的真空泡

Citations (2)

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Publication number Priority date Publication date Assignee Title
US4216360A (en) * 1978-07-27 1980-08-05 Westinghouse Electric Corp. Low voltage vacuum switch with internal arcing shield
CN1312714C (zh) * 2002-06-27 2007-04-25 施耐德电器工业公司 用于开关或断路器等电力保护设备的真空管壳

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US4233480A (en) * 1978-09-20 1980-11-11 Westinghouse Electric Corp. Low voltage vacuum switch with three internal contacts including a center floating contact
DE3887725T2 (de) * 1987-09-29 1994-09-01 Mitsubishi Electric Corp Vakuum-Entladevorrichtung.
NL8901748A (nl) * 1989-07-07 1991-02-01 Holec Syst & Componenten Werkwijze voor het bevestigen van een metalen scherm in het huis van een vacuuemschakelaar, scherm daarvoor alsmede van een dergelijk scherm voorziene vacuuemschakelaar.
DE29910718U1 (de) * 1999-06-11 1999-12-09 Siemens Ag Vakuumschaltröhre mit einem Dampfschirm
EP1367039B1 (en) * 2000-01-26 2005-11-16 Ngk Spark Plug Co., Ltd Ceramic member for bonding, process for producing the same, vacuum switch and vacuum vessel
JP2001222935A (ja) * 2000-02-08 2001-08-17 Toshiba Corp 真空開閉装置
CN101789328B (zh) * 2010-03-25 2012-05-23 北京双杰电气股份有限公司 固体开关柜专用三工位真空灭弧室

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4216360A (en) * 1978-07-27 1980-08-05 Westinghouse Electric Corp. Low voltage vacuum switch with internal arcing shield
CN1312714C (zh) * 2002-06-27 2007-04-25 施耐德电器工业公司 用于开关或断路器等电力保护设备的真空管壳

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EP2560179A4 (en) 2014-06-11
CN101894706A (zh) 2010-11-24
EP2560179A1 (en) 2013-02-20

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