WO2012169082A1 - Commutateur - Google Patents

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Publication number
WO2012169082A1
WO2012169082A1 PCT/JP2011/067252 JP2011067252W WO2012169082A1 WO 2012169082 A1 WO2012169082 A1 WO 2012169082A1 JP 2011067252 W JP2011067252 W JP 2011067252W WO 2012169082 A1 WO2012169082 A1 WO 2012169082A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
pressure
pressure release
pressure relief
release plate
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2011/067252
Other languages
English (en)
Japanese (ja)
Inventor
進 小鶴
山地　祐一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of WO2012169082A1 publication Critical patent/WO2012169082A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof

Definitions

  • the present invention relates to a metal closed type switchgear for housing a circuit breaker or the like in a panel and distributing electricity safely, and more particularly to its pressure release and drip-proof structure.
  • Each compartment has a drawer type device such as a circuit breaker, and the inside of the case is a circuit breaker room, control room, control equipment room, common pressure release room, current transformer room, bus bar room, vertical bus room, cable room, etc.
  • a switch gear having an arc-proof structure partitioned into two a switch gear having a pressure relief plate provided on the ceiling is known as disclosed in Japanese Utility Model Publication No. 62-098402 (Patent Document 1).
  • Patent Document 1 when an internal short circuit accident occurs, the pressure of the air heated and expanded by the arc is applied to the pressure release plate fixed at one end, the pressure release plate is bent to open the pressure release port, The pressure is released from the pressure release port to the outside of the switchgear.
  • Patent Document 2 Japanese Utility Model Laid-Open No. 61-007203
  • Patent Document 2 while installing a drip-proof frame around the opening part of a ceiling board, the pressure-release plate which covers an opening part is provided in the upper part of the drip-proof frame.
  • the switch gear as shown in Patent Document 1 above increases the internal pressure of the accident occurrence compartment, and the pressure release plate provided in the accident occurrence compartment is opened by that pressure, By releasing the high-temperature high-pressure gas to the outside of the gear, the pressure rise inside the switch gear is suppressed.
  • protection against water drops falling on the ceiling of the switchgear it is possible to prevent water entering from the location where the pressure relief plate is fixed to the ceiling plate, the notch hole, and the gap between the ceiling plate and the pressure relief plate. There was a problem that it was difficult to protect.
  • the switchgear as shown in Patent Document 2 has a structure that takes into account water drops falling on the ceiling, but there is a gap through which water can enter between the pressure relief plate and the ceiling. Therefore, there is a problem that a complete drip-proof effect cannot be obtained.
  • An object of the present invention is to provide a switchgear that can solve the above-described problems with a simple configuration and can obtain excellent drip-proof performance and a reliable pressure release effect.
  • the switchgear according to the present invention is a pressure relief plate having a structure in which an opening for pressure relief in the ceiling portion of the apparatus body has a chimney shape in which a rising wall projects upward, and the container having an opening on the upper surface is inverted.
  • the pressure relief plate and the ceiling portion are covered from the ceiling portion of the pressure relief plate so that the pressure relief plate and the ceiling portion can be opened by the pressure from the inside when an internal short circuit accident occurs in the equipment and can be prevented from scattering. It is made to couple
  • the present invention it is possible to prevent the pressure relief plate from scattering when an internal short circuit accident of the switch gear occurs, and when water drops fall to the ceiling of the switch gear, the water drops travel outside the container-like pressure relief plate, Since it falls on the ceiling plate, there is no need to apply an additional drip-proof measure in the gap between the pressure relief plate and the ceiling. Therefore, the effect that the structure of the pressure release part of the switch gear can be made inexpensive when the arc proof structure and the drip-proof structure are required is obtained.
  • FIG. 2 the perspective view which shows the state at the time of the pressure-release plate open
  • FIG. 4 the perspective view which shows the state at the time of the pressure-release plate open
  • FIG. 1 is a view showing a side longitudinal section of a switchgear according to Embodiment 1 for carrying out the present invention, and shows a state during normal operation in which no internal short circuit accident has occurred.
  • the interior of the ground metal case 1 is partitioned into a plurality of compartments.
  • disconnections 4a and 4b of the main circuit are fixed vertically with a predetermined interval, and a connection terminal protruding from the rear surface (right side in the figure) of the circuit breaker 2 is attached and detached It can be done.
  • the disconnecting portions 4a and 4b are provided with disconnecting terminals 5a and 5b.
  • Above the circuit breaker compartment 3 is a control device compartment 6 in which a control instrument (not shown) is accommodated.
  • a bus compartment 9 in which a three-phase bus 7 is supported by a support insulator 8 and is arranged in the main part of a disconnecting portion 4 a connected to one end of the circuit breaker 2.
  • the circuit terminal 5 a and the bus 7 are connected by a branch conductor 10 and stored.
  • Behind the bus compartment 9 is a cable compartment 12 in which a load-side cable 11 is accommodated.
  • the disconnecting terminal 5b and the current transformer 14 are connected by a load-side conductor 13, and a ground switch 15 is installed below the main circuit disconnecting part 4b.
  • a door 16 that is opened and closed by a hinge is provided on the front side of the housing 1, and each compartment of the circuit breaker compartment 3, the control device compartment 6, and the cable compartment 12 constitutes an independent chamber.
  • the compartments in which the main circuit components are stored that is, the circuit breaker compartment 3, the busbar compartment 9, and the cable compartment 12 are each in communication with the top plate 101 of the ceiling portion of the housing 1.
  • the pressure relief openings 1a, 1b, 1c provided in the top plate 101 of each compartment have a structure in which a rising wall with four sides is projected toward the outside of the switchgear housing in a chimney shape.
  • the pressure relief openings 1a, 1b and 1c are provided with pressure relief plates 17a, 17b and 17c, respectively.
  • the pressure release plate has a shape in which a rectangular container having an open upper surface is inverted as shown in FIG. 2, and is installed so as to cover the pressure release opening 1b.
  • the size of the pressure release plate 17b is slightly larger than the size of the rising wall of the pressure release opening 1b.
  • the pressure release plate 17b is a connecting member such as the top plate 101 of the housing 1 and the string 18, or a chain. Are bound by.
  • the relationship between the pressure relief openings 1a and 1c and the pressure relief plates 17a and 17c is the same as the relationship between the pressure relief opening 1b and the pressure relief plate 17b.
  • the internal configuration of the housing 1 shown in FIG. 1 is an example, and is not limited to the arrangement shown in the figure. Usually, it is composed of a compartment for storing a drawer-type device, a bus compartment, a cable compartment, and a control device compartment.
  • FIG. 2 is a perspective view showing a part of the ceiling portion of FIG. For convenience, only the pressure relief opening 1b and the pressure relief plate 17b of the ceiling portion of the bus compartment 9 and the related portions are shown.
  • FIG. 3 is a diagram showing a state when the internal pressure rises and the pressure release plate 17b is opened when an internal short circuit accident occurs in FIG.
  • the pressure release plate 17b is lifted upward as shown in the figure, and the high-temperature and high-pressure gas is discharged from the pressure release opening 1b to the outside of the switchgear.
  • the release of the pressure release plate 17b starts when a pressure higher than the weight of the pressure release plate 17b is applied to the surface where the pressure release plate 17b closes the pressure release opening 1b.
  • the opening surface at the initial stage of release of the pressure release plate becomes larger, resulting in an internal short circuit accident.
  • the pressure release can be further promoted, and as a result, the pressure rise inside the switch gear can be further suppressed.
  • the pressure release plate 17b and the ceiling plate 101 of the ceiling portion are connected by four strings 18, but the string 18 here is scattered by the pressure release plate 17b in the event of an internal short circuit accident. Therefore, the connecting portion of the string 18 may be less than four locations or one location as long as it is not cut in the event of an internal short circuit accident. Further, the attachment position of the string 18 may be changed in the pressure release plate 17b as long as it does not affect the ingress of water drops falling from the upper part. Further, here, the string 18 is used as a coupling means between the pressure release plate 17b and the top plate 101. However, a string-like object may be used as long as it is string-shaped. In the example shown in FIGS.
  • the pressure release opening 1 b and the pressure release plate 17 b are formed in a square shape. However, depending on the configuration of the device, a shape other than the square shape may be implemented.
  • the pressure release plate 17b is restricted from moving upward by a certain distance from the top plate 101 constituting the ceiling, and is released when an internal short circuit accident occurs. When the pressure plate 17b is opened, scattering of the pressure release plate 17b can be prevented.
  • FIG. FIG. 4 is a perspective view showing a part of the ceiling portion of the switchgear according to Embodiment 2 for carrying out the present invention. For convenience, only the pressure relief opening 1b and the pressure relief plate 17b in the ceiling portion of the bus compartment 9 and the related portions are shown.
  • a spring 19 is used as a coupling means between the pressure release plate 17b and the ceiling plate 101 of the ceiling.
  • FIG. 5 is a perspective view showing a state when the pressure release plate 17b is opened when an internal short circuit accident occurs.
  • the release of the pressure release plate at the time of pressure release is delayed as compared with the first embodiment, but the pressure release plate 17 b is fixed by applying a load to the ceiling portion, and the switch It is possible to prevent the pressure release plate 17b from being detached from the ceiling during transportation of the gear. Further, by increasing the spring load, when an internal short circuit accident occurs, the pressure release plate 17b is opened when the internal pressure of the switch gear rises above a certain threshold value, and the internal pressure of the switch gear decreases below the threshold value, the pressure release plate The function of closing 17b can be added, and the effect of suppressing diffusion in the high-pressure high-temperature gas released from the inside of the switchgear can be obtained.
  • a rubber string or the like can be used instead of the spring 19 as long as it can be expanded and contracted. Then, by setting the total length when the spring 19 and the rubber string are fully extended to a predetermined value, the pressure release plate 17b is restricted from moving upward from the top plate 101 constituting the ceiling by a certain distance or more. When the pressure release plate 17b is opened when an internal short circuit accident occurs, scattering of the pressure release plate 17b can be prevented.
  • FIG. FIG. 6 is a perspective view showing a part of the ceiling portion of the switchgear according to Embodiment 3 for carrying out the present invention.
  • FIGS. 3 to 5 only the pressure relief opening 1b and the pressure relief plate 17b in the ceiling portion of the busbar compartment 9 and the related portions are shown.
  • four connecting rings 22 that extend horizontally and are fixed to the four corners of the pressure release plate 17b.
  • the pressure release plate 17b moves smoothly up and down by fitting four connection rings 22 provided at the four corners of the pressure release plate 17b to the four connection poles 21 standing on the top plate 101 separately. Can do. Note that a stopper 23 is provided on the uppermost portion of the connecting pole 21 to prevent the pressure release plate 17b from being scattered in the event of an internal short circuit accident.
  • the pressure relief plate 17b is in a lowered state due to its own weight and closes the pressure relief opening 1b.
  • the pressure release plate 17b is lifted upward as shown in FIG. 6, and the high temperature and high pressure gas flows from the pressure release opening 1b to the outside of the switch gear. Released.
  • the pressure release plate 17b moves upward along the connecting pole 21, and the pressure release plate 17b comes into contact with and engages with a stopper 23 provided on the uppermost portion of the connection pole 21, so that the pressure release plate 17b moves over the ceiling portion.
  • the release plate 17b can be prevented from scattering when the release plate 17b is opened due to an increase in internal pressure due to the occurrence of an internal short circuit accident.
  • the pressure release plate 17b is lowered by its own weight and closes the pressure release opening 1b.
  • the present invention is suitable for realizing a switchgear that can obtain excellent drip-proof performance and a reliable pressure release effect.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Patch Boards (AREA)

Abstract

Selon l'invention, une section d'ouverture de détente (1b) placée sur la section supérieure prend la forme d'une cheminée ayant des parois verticales qui se projettent vers le haut ; la section d'ouverture de détente (1b) est recouverte par une plaque de détente (17b) qui prend la forme inversée d'un conteneur ayant une ouverture sur le dessus ; et la plaque de détente (17b) et une plaque supérieure (101) sont connectées entre elles à l'aide d'éléments de connexion (18) qui sont des chaînes qui empêchent un mouvement de montée dépassant une distance prédéterminée par rapport à la section supérieure de la plaque de détente (17b) afin de réaliser une structure protégée contre les projections. De cette manière, le temps nécessaire pour dégager la plaque de détente en cas de court-circuit interne est réduit.
PCT/JP2011/067252 2011-06-07 2011-07-28 Commutateur Ceased WO2012169082A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011126857A JP2012253980A (ja) 2011-06-07 2011-06-07 スイッチギヤ
JP2011-126857 2011-06-07

Publications (1)

Publication Number Publication Date
WO2012169082A1 true WO2012169082A1 (fr) 2012-12-13

Family

ID=47295679

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/067252 Ceased WO2012169082A1 (fr) 2011-06-07 2011-07-28 Commutateur

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JP (1) JP2012253980A (fr)
WO (1) WO2012169082A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014099344A1 (fr) * 2012-12-17 2014-06-26 Abb Technology Ag Boîtier résistant à arc de transformateur de type sec ayant une structure de libération de pression
WO2020048802A1 (fr) * 2018-09-07 2020-03-12 Siemens Aktiengesellschaft Dispositif de décompression

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106898954B (zh) * 2017-04-24 2019-01-29 武汉大学 一种开关柜泄压装置
JP6953935B2 (ja) * 2017-09-14 2021-10-27 富士電機株式会社 放圧装置、配電盤
JP7373270B2 (ja) * 2018-08-30 2023-11-02 トキコシステムソリューションズ株式会社 燃料ガス充填装置
US11910546B2 (en) 2019-06-03 2024-02-20 Toshiba Mitsubishi-Electric Industrial Systems Corporation Explosion-proof structure for electronic component

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49145151U (fr) * 1974-02-26 1974-12-14
JPS5112930U (fr) * 1974-07-17 1976-01-30
JPS6156739U (fr) * 1984-09-18 1986-04-16
JPS62198634U (fr) * 1986-06-09 1987-12-17
JPS642333U (fr) * 1987-06-24 1989-01-09

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49145151U (fr) * 1974-02-26 1974-12-14
JPS5112930U (fr) * 1974-07-17 1976-01-30
JPS6156739U (fr) * 1984-09-18 1986-04-16
JPS62198634U (fr) * 1986-06-09 1987-12-17
JPS642333U (fr) * 1987-06-24 1989-01-09

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014099344A1 (fr) * 2012-12-17 2014-06-26 Abb Technology Ag Boîtier résistant à arc de transformateur de type sec ayant une structure de libération de pression
WO2020048802A1 (fr) * 2018-09-07 2020-03-12 Siemens Aktiengesellschaft Dispositif de décompression

Also Published As

Publication number Publication date
JP2012253980A (ja) 2012-12-20

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