WO2013171928A1 - Soupape de dépression - Google Patents

Soupape de dépression Download PDF

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Publication number
WO2013171928A1
WO2013171928A1 PCT/JP2012/081035 JP2012081035W WO2013171928A1 WO 2013171928 A1 WO2013171928 A1 WO 2013171928A1 JP 2012081035 W JP2012081035 W JP 2012081035W WO 2013171928 A1 WO2013171928 A1 WO 2013171928A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide
movable
vacuum valve
fixed
end plate
Prior art date
Application number
PCT/JP2012/081035
Other languages
English (en)
Japanese (ja)
Inventor
真一 三木
友和 吉田
将司 川田
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2014515458A priority Critical patent/JP5710072B2/ja
Publication of WO2013171928A1 publication Critical patent/WO2013171928A1/fr

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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
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • 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
    • H01H33/66238—Specific bellows details
    • H01H2033/66246—Details relating to the guiding of the contact rod in vacuum switch belows
    • 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
    • H01H33/666—Operating arrangements
    • H01H2033/6665—Details concerning the mounting or supporting of the individual vacuum bottles

Definitions

  • This invention relates to a vacuum valve used for a vacuum circuit breaker or the like.
  • a fixed side end plate and a movable side end plate are joined to both ends of an insulating cylinder made of alumina ceramic or the like by brazing, and a vacuum vessel is formed.
  • the movable-side end plate is provided with a movable-side electrode rod
  • the fixed-side electrode rod and the movable-side electrode rod are provided with a fixed-side electrode and a movable-side electrode, which are arranged to face each other.
  • a bellows is joined by brazing between the movable electrode bar and the movable end plate, thereby enabling opening and closing while maintaining airtightness.
  • the guide has a guide for guiding the movement of the movable electrode rod in the axial direction, and this guide is fixed to the guide mounting plate joined to the movable side end plate by brazing.
  • the guide is made of a synthetic resin or the like and is formed in a cylindrical shape to prevent the movable electrode rod from being tilted and to prevent the bellows from being twisted (for example, see Patent Document 1).
  • the outer periphery of the guide of the vacuum valve may be fitted and supported by a support member provided in the vacuum circuit breaker body in order to prevent the vibration of the vacuum valve.
  • the position of the guide in the axial direction with respect to the support member may fluctuate due to the influence of the dimensional tolerance of the components of the vacuum circuit breaker body and the vacuum valve itself. If the amount of variation is large, it is difficult to fit the support member and the outer peripheral portion of the guide unless the thickness of the outer peripheral portion of the guide is increased. Synthetic resin is generally used as the guide material.
  • the guide becomes expensive. This has caused a problem that it is difficult to process into a necessary shape.
  • the present invention has been made to solve the above-described problems, and a vacuum valve having a guide with a thicker mounting portion so that the outer peripheral portion of the guide portion can be supported by a support member is inexpensive.
  • the purpose is to provide.
  • the fixed side end plate and the movable side end plate are hermetically joined to both end faces of the insulating cylinder to form a vacuum vessel, and the fixed side electrode and the movable side electrode are provided inside the vacuum vessel.
  • the fixed side electrode is fixed to one end of a fixed side electrode rod fixed to the fixed side end plate
  • the movable side electrode is a movable side electrode rod movably provided on the movable side end plate via a bellows.
  • the guide is divided into two parts, a first guide and a second guide, outside the vacuum vessel. The guide is attached so as to overlap the axial direction of the movable electrode rod.
  • the guide for guiding the movable electrode rod is divided into the first guide and the second guide on the outside of the vacuum vessel, and both guides are in the axial direction of the movable electrode rod. Therefore, it is possible to easily produce a guide with a longer axial length of the guide exposed to the outside of the vacuum vessel by molding, and the outer periphery of the second guide can be formed. In the case of supporting, even if the position of the guide in the axial direction varies due to the dimensional tolerance of the member, a vacuum valve that can easily cope with the variation can be provided at low cost.
  • FIG. 1A and 1B are views showing a vacuum valve according to Embodiment 1 of the present invention, in which FIG. 1A is a side sectional view of the whole vacuum valve, and FIG. 1B is a side sectional view of an essential part thereof.
  • the vacuum vessel of the vacuum valve is composed of an insulating cylinder 1 made of cylindrical alumina ceramic or the like, and a fixed side end plate 2 and a movable side end plate 3 provided on both sides in the axial direction.
  • the fixed side end plate 2 and the movable side end plate 3 are respectively attached to both ends of the insulating cylinder 1 by brazing.
  • a silver brazing material is mainly used.
  • the fixed-side electrode rod 4 is fixed by brazing through the fixed-side end plate 2
  • the movable-side electrode rod 5 is joined by brazing through the movable-side end plate 3 through the bellows 6. It is attached to move freely in the direction.
  • a fixed side electrode 7 is brazed and joined to the end of the fixed side electrode rod 4 inside the vacuum vessel, and a movable side electrode 8 is brazed and joined to the end of the movable side electrode rod 5, so that both electrodes 7, 8 are joined.
  • a shield 9 is disposed so as to surround the outer peripheral sides of the electrodes 7 and 8 and is fixed to the insulating cylinder 1. The shield 9 prevents the inner surface of the insulating cylinder 1 from being contaminated by metal vapor generated from the fixed side electrode 7 and the movable side electrode 8 when the current is interrupted.
  • a bellows cover 10 is brazed to the movable electrode bar 5.
  • a first guide 11 having a guide hole 11b formed in the center is provided in a portion where the movable electrode rod 5 passes through the movable end plate 3 to slide and guide the movable electrode rod 5 in the axial direction. It has been.
  • the movable electrode rod 5 and the guide hole 11b are provided with a minute gap so as to be slidable.
  • the 2nd guide 12 is provided so that the outer periphery of the collar part 11a used as the attaching part of this 1st guide 11 may be covered.
  • a guide mounting plate 13 is fixed to the outside of the movable side end plate 3.
  • the first guide 11 and the second guide 12 are attached to the guide mounting plate 13 by screws (not shown) after the parts of the vacuum valve are brazed and the assembly is completed.
  • FIG. 1B is a side cross-sectional view showing only the guides 11 and 12 taken out from FIG. 1A so that each part of the guide portion can be easily understood.
  • the first guide 11 is a cylinder in which a flange portion 11a screwed to the guide mounting plate 13 and a guide hole 11b extending in the axial direction of the movable electrode rod 5 to guide the movement of the movable electrode rod 5 are formed. Part 11c.
  • the second guide 12 is made of a disk-shaped member, and is fitted with the flange portion 11a of the first guide 11 so as to cover almost the entire flange portion 11a, and the movable electrode rod.
  • the bottom surface and the inner peripheral surface 12d of the concave portion 12a are configured to contact the end surface of the flange portion 11a and the outer peripheral surface 11d of the first guide 11, and both the guides 11 and 12 have the concave portion 12a fitted to the flange portion 11a. Then, they are overlapped in the axial direction and integrally screwed to the guide mounting plate 13.
  • the fixed electrode rod 4 side is fixed and supported by a frame or the like (not shown) of the vacuum circuit breaker body.
  • the movable electrode rod 5 side is connected to the operation mechanism of the vacuum circuit breaker.
  • the movable electrode bar 5 is driven by an operation of an operation mechanism (not shown), and the movable electrode 8 is opened and closed by bringing it into contact with and separating from the fixed electrode 7.
  • the movable electrode rod 5 side of the vacuum valve that is, the guide portion also from the vacuum circuit breaker main body side. May support.
  • the vacuum valve of the present invention corresponds to such a vacuum valve, and the support hole of the support member 14 attached to the vacuum circuit breaker body is fitted to the outer peripheral portion 12c of the second guide 12. The one end side of the vacuum valve is supported from the vacuum circuit breaker body.
  • the position of the guide portion in the axial direction may fluctuate with respect to the support member 14 due to the influence of the dimensional tolerances of the vacuum circuit breaker body side components and the vacuum valve itself. It is necessary to increase the axial length, that is, the thickness of the outer peripheral portion of the guide portion fitted to the support member 14.
  • the guide portion of the present embodiment is divided into two members on the outside of the vacuum vessel, and is supported by a first guide 11 that mainly guides the movable electrode rod 5 and a support member 14 that is mainly on the vacuum circuit breaker body side.
  • the second guide 12 is configured so that the flange portion 11a of the first guide 11 is fitted to the concave portion 12a of the second guide 12 on the outside of the vacuum vessel, and both are attached to the guide mounting plate 13. Therefore, even if the length of the second guide 12 in the axial direction, that is, the thickness is increased, the second guide 12 can be easily manufactured by an inexpensive molding process. If it is going to be molded with a single resin member without splitting into both guides, sinking will occur if the thickness exceeds a certain value, so the axial and radial thicknesses are limited. If it is adopted, it becomes possible to secure a sufficient thickness of the second guide 12 fitted to the support member 14, and the first guide 11 is also smaller than the case of integral molding, so that the manufacture is easy. Become.
  • the guide unit is required to have the following functions. That is, (A) the axes of the fixed electrode 7 and the movable electrode 8 are aligned. (B) Withstands impact force generated during opening / closing operation by the operation mechanism. (C) It withstands the electromagnetic force generated in the movable electrode bar 5 when a large current is applied. (D) The movable electrode rod 5 is slid smoothly. It is a function. In order to satisfy such a function, a synthetic resin is generally used as a material.
  • the first guide 11 can slide smoothly with the movable electrode bar 5 by the cylindrical portion 11c, and the axes of the fixed electrode 7 and the movable electrode 8 can be aligned.
  • the second guide 12 is supported from the side of the vacuum circuit breaker body, and mechanical and electrical performance due to vibration when the vacuum valve is attached to the vacuum circuit breaker, and vibration of the vacuum valve during opening / closing operation or current interruption. Suppresses the decline.
  • the recessed part 12a of the 2nd guide 12 is comprised so that the end surface of the collar part 11a of the 1st guide 11, and the outer peripheral part 11d may be comprised, and both guides 11 and 12 may be supported and fixed integrally. Withstands an impact force generated during an opening / closing operation by an operation mechanism, and withstands an electromagnetic force generated in the movable electrode bar 5 when a large current is applied.
  • the fixed-side end plate and the movable-side end plate are hermetically joined to both end surfaces of the insulating cylinder to form the vacuum vessel, and the vacuum vessel is fixed inside the vacuum vessel.
  • the side electrode and the movable side electrode are arranged opposite to each other, the fixed side electrode is fixed to one end of the fixed side electrode rod fixed to the fixed side end plate, and the movable side electrode is movable to the movable side end plate via the bellows.
  • the guide is connected to a first guide and a second guide outside the vacuum vessel.
  • the guides are divided into two parts, and both guides are attached so as to overlap in the axial direction of the movable electrode rod. It is possible to easily produce a guide with an increased length in the axial direction of the guide exposed to the outside of the vacuum vessel by molding, and when supporting the outer periphery of the second guide, due to the dimensional tolerance of the member, etc. Even if the position of the guide in the axial direction changes, a vacuum valve that can easily cope with the change can be provided at low cost.
  • the first guide includes a cylindrical portion formed with a guide hole that extends in the axial direction and slides and guides the movable electrode rod, and a flange portion that is attached to a guide mounting plate provided on the movable end plate.
  • the second guide has a recess into which the collar portion of the first guide is fitted and a through hole through which the movable electrode rod passes, and the outer peripheral portion of the second guide is a vacuum valve.
  • the outer periphery of the vacuum valve guide can be reliably supported from the vacuum circuit breaker body side, and opened and closed. It is possible to suppress a decrease in mechanical and electrical performance due to the vibration of the vacuum valve during operation or current interruption.
  • FIG. FIG. 2 is a side sectional view showing a vacuum valve according to Embodiment 2 of the present invention. Since the basic structure of the vacuum valve is the same as that of the first embodiment, the same parts as those in FIG. The difference is the relationship between the inner circumference side of the first guide and the second guide. In the following description, the subscripts of the reference numerals of the parts of the second guide 15 are the same as those in FIG. 1B of the first embodiment, and are partly indicated in FIG. Omitted.
  • the size of the through hole 15 b is the same size as the guide hole 11 b of the first guide 11. Further, the inner peripheral portion 15 d of the concave portion 15 a of the second guide 15 is positioned by the outer peripheral portion 11 d of the flange portion 11 a of the first guide 11. In this way, by making the through hole 15b of the second guide 15 and the guide hole 11b of the first guide 11 the same size and shape, it is movable as compared with the vacuum valve of FIG. 1 of the first embodiment.
  • the length of the sliding part with the side electrode rod 5 becomes long, the inclination of the movable side electrode rod 5 and the axial deviation of the fixed side electrode 7 and the movable side electrode 8 can be further suppressed.
  • the length of the cylindrical portion 11c of the first guide 11 needs to be a length that does not interfere with the bellows cover 10 even when the bellows 6 expands and contracts.
  • the length of the through hole 15b of the second guide 15 is increased by the thickness, so that the above effect can be exhibited.
  • the through hole of the second guide is formed to have the same size as the guide hole of the cylindrical portion of the first guide, and the recess of the second guide is formed. Since the inner peripheral portion is positioned at the outer peripheral portion of the collar portion of the first guide, the inclination of the movable electrode rod and the axis of the fixed electrode and the movable electrode are compared with the vacuum valve of the first embodiment. The shift can be further suppressed. In addition, even when the length of the cylindrical portion cannot be increased due to restrictions on the molding process or the like, the sliding portion is increased by the thickness of the through hole of the second guide, so that the above effect can be exhibited.
  • FIG. 3 is a side sectional view showing a vacuum valve according to Embodiment 3 of the present invention. Since the basic structure of the vacuum valve is the same as that of the first embodiment, the same parts as those in FIG. The difference is the mounting relationship between the first guide and the second guide.
  • the support member 14 of the vacuum circuit breaker main body is attached to a frame or the like on the main body side and fixed in position before the vacuum valve is incorporated.
  • the subscripts of the reference numerals of the respective parts of the second guide 16 are the same as those in FIG. 1B of the first embodiment, and are partly indicated in FIG. Omitted.
  • the inner peripheral portion 12d of the concave portion 12a of the second guide 12 and the outer peripheral portion 11d of the flange portion 11a of the first guide 11 are fitted, but in this embodiment,
  • the first guide 11 is attached in accordance with the guide attachment plate 13 of the vacuum valve, and the second guide 16 is fitted into the support hole of the support member 14 that is positioned by fitting the outer peripheral portion 16c. Is fixed to the guide mounting plate 13 with screws.
  • the through hole 16b of the second guide 16 is larger than the guide hole 11b of the cylindrical portion 11c of the first guide 11, and the radial size of the inner peripheral portion 16d of the concave portion 16a is the outer peripheral portion of the flange portion 11a. It is formed larger than 11d. Furthermore, the screw mounting holes (not shown) of the second guide 16 are sized to allow for the amount of deviation. In consideration of assembly workability, the first guide 11 and the second guide 16 may be individually attached to the guide attachment plate 13 by screwing.
  • the through hole of the second guide is larger than the guide hole of the cylindrical portion of the first guide and the inner peripheral portion of the concave portion of the second guide Is formed larger than the outer peripheral portion of the collar portion of the first guide, and when the outer peripheral portion of the second guide is positioned and supported by the support member of the vacuum circuit breaker body, the first guide is positioned at the center of the first guide.
  • both guides can be attached to the guide mounting plate. Therefore, even if the support member is previously positioned on the vacuum circuit breaker body side, the second guide The guide can be easily supported by the support member, and the vibration of the vacuum valve can be suppressed as in the first embodiment.
  • the embodiments can be freely combined, or the embodiments can be appropriately changed or omitted.
  • Insulating cylinder 2 fixed side end plate, 3 movable side end plate, 4 fixed side electrode rod, 5 movable electrode rod, 6 bellows, 7 fixed electrode, 8 movable electrode, 9 Shield, 10 Bellows cover, 11 First guide, 11a collar part, 11b guide hole, 11c cylinder part, 11d outer peripheral part, 12, 15, 16 second guide, 12a, 15a, 16a recess, 12b, 15b, 16b through hole, 12c, 15c, 16c outer peripheral part, 12d, 15d, 16d Inner circumference, 13 guide mounting plate, 14 support member.

Landscapes

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

Abstract

La présente invention se rapporte à une soupape de dépression : qui comprend une chambre à vide qui est constituée par jonction d'une plaque d'extrémité côté fixe (2) et d'une plaque d'extrémité côté mobile (3) aux deux faces d'extrémité d'un cylindre isolant (1) ; qui comporte une électrode côté fixe (7) et une électrode côté mobile (8) qui sont disposées à l'intérieur de la chambre à vide, l'électrode côté fixe (7) étant ancrée à une extrémité d'une tige d'électrode côté fixe (4) fixée à la plaque d'extrémité côté fixe (2), l'électrode côté mobile (8) étant fixée à une extrémité d'une tige d'électrode côté mobile (5) agencée de manière mobile sur la plaque d'extrémité côté mobile (3) par l'intermédiaire d'un soufflet (6) ; et qui comporte un guide qui guide la tige d'électrode côté mobile (5) et est fixé à la plaque d'extrémité côté mobile (3). Le guide est divisé en deux parties, à savoir un premier guide (11) et un second guide (12), sur l'extérieur de la chambre à vide. Les deux guides (11, 12) sont fixés à une plaque de fixation de guide (13) de sorte à se chevaucher l'un l'autre dans la direction axiale de la tige d'électrode côté mobile (5).
PCT/JP2012/081035 2012-05-14 2012-11-30 Soupape de dépression WO2013171928A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014515458A JP5710072B2 (ja) 2012-05-14 2012-11-30 真空バルブ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-110258 2012-05-14
JP2012110258 2012-05-14

Publications (1)

Publication Number Publication Date
WO2013171928A1 true WO2013171928A1 (fr) 2013-11-21

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ID=49583364

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/081035 WO2013171928A1 (fr) 2012-05-14 2012-11-30 Soupape de dépression

Country Status (2)

Country Link
JP (1) JP5710072B2 (fr)
WO (1) WO2013171928A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104810195A (zh) * 2015-05-05 2015-07-29 西安交通大学 一种高气体压力下真空灭弧室波纹管的保护结构及应用
KR20160102808A (ko) * 2015-02-23 2016-08-31 엘에스산전 주식회사 진공 인터럽터
KR20160114239A (ko) * 2015-03-23 2016-10-05 엘에스산전 주식회사 진공 차단기
KR20160127217A (ko) * 2015-04-23 2016-11-03 현대중공업 주식회사 회로 차단기

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56114029U (fr) * 1980-02-04 1981-09-02
JP2000082368A (ja) * 1998-09-02 2000-03-21 Toshiba Fa Syst Eng Corp 真空バルブの製造方法及びその装置
JP2004214142A (ja) * 2003-01-08 2004-07-29 Fuji Electric Fa Components & Systems Co Ltd 真空バルブ
JP2011003502A (ja) * 2009-06-22 2011-01-06 Mitsubishi Electric Corp 真空バルブ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56114029U (fr) * 1980-02-04 1981-09-02
JP2000082368A (ja) * 1998-09-02 2000-03-21 Toshiba Fa Syst Eng Corp 真空バルブの製造方法及びその装置
JP2004214142A (ja) * 2003-01-08 2004-07-29 Fuji Electric Fa Components & Systems Co Ltd 真空バルブ
JP2011003502A (ja) * 2009-06-22 2011-01-06 Mitsubishi Electric Corp 真空バルブ

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160102808A (ko) * 2015-02-23 2016-08-31 엘에스산전 주식회사 진공 인터럽터
US9552946B2 (en) 2015-02-23 2017-01-24 Lsis Co., Ltd. Vacuum interrupter
KR101697580B1 (ko) 2015-02-23 2017-02-01 엘에스산전 주식회사 진공 인터럽터
KR20160114239A (ko) * 2015-03-23 2016-10-05 엘에스산전 주식회사 진공 차단기
KR101691289B1 (ko) 2015-03-23 2016-12-30 엘에스산전 주식회사 진공 차단기
KR20160127217A (ko) * 2015-04-23 2016-11-03 현대중공업 주식회사 회로 차단기
KR101692788B1 (ko) 2015-04-23 2017-01-05 현대중공업 주식회사 회로 차단기
CN104810195A (zh) * 2015-05-05 2015-07-29 西安交通大学 一种高气体压力下真空灭弧室波纹管的保护结构及应用
CN104810195B (zh) * 2015-05-05 2015-12-30 西安交通大学 一种高气体压力下真空灭弧室波纹管的保护结构及应用

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