JP3077132B2 - Pressure relief device for closed container - Google Patents
Pressure relief device for closed containerInfo
- Publication number
- JP3077132B2 JP3077132B2 JP06291982A JP29198294A JP3077132B2 JP 3077132 B2 JP3077132 B2 JP 3077132B2 JP 06291982 A JP06291982 A JP 06291982A JP 29198294 A JP29198294 A JP 29198294A JP 3077132 B2 JP3077132 B2 JP 3077132B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- plate
- pressure relief
- arc
- closed container
- 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.)
- Expired - Fee Related
Links
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
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
- H01H33/56—Gas reservoirs
- H01H2033/568—Gas reservoirs with overpressure release, e.g. rupture membranes
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Patch Boards (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、電気機器を収納した密
閉容器の放圧装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure relief device for a closed container containing electric equipment.
【0002】[0002]
【従来の技術】図1に示すように開閉器1を収納した密
閉容器2には、内部圧力が異常に上昇した時に圧力を放
出する放圧口2aが設けてある。図2(A)に示すよう
に押え板5で放圧板4を押え、放圧口2aを塞ぎ、密閉
容器2を密閉構造としている。放圧板4は金属板で成形
されており、ある値以上の圧力が放圧板4に加わると、
図3(A)に示す破断部4aで破断する。その後、放圧
板4は押え板5で押えられている固定箇所4bを支点と
し、密閉容器2の外側に変形する。このような構造とす
ることにより、密閉容器2の内部圧力上昇したとき密閉
容器2の放出口2aより圧力を放出する。2. Description of the Related Art As shown in FIG. 1, a closed vessel 2 containing a switch 1 is provided with a pressure relief port 2a for releasing pressure when the internal pressure rises abnormally. As shown in FIG. 2A, the pressure release plate 4 is pressed by the pressure plate 5, the pressure release port 2a is closed, and the closed container 2 has a closed structure. The pressure relief plate 4 is formed of a metal plate, and when a pressure of a certain value or more is applied to the pressure relief plate 4,
It breaks at the break 4a shown in FIG. After that, the pressure release plate 4 is deformed to the outside of the closed container 2 with the fixed portion 4b held by the holding plate 5 as a fulcrum. With such a structure, when the internal pressure of the closed container 2 increases, the pressure is released from the discharge port 2 a of the closed container 2.
【0003】[0003]
【発明が解決しようとする課題】内部圧力上昇は、密閉
容器に収納した電気機器の絶縁材料の絶縁低下により、
内部短絡等でのアークにより発生するものである。密閉
容器内で発生したアークは、アーク発生時の電流による
電磁力や内部圧力を放出する際のガス流により、金属製
の放圧板に移行することがある。放圧板に移行したアー
クは放圧板の固定箇所を溶損させてしまう。溶損した放
圧板は放出するガス流とともに飛散する。このことによ
り、周囲の作業者や設備に危害や損傷を与えたりすると
いう欠点がある。そこで本発明は、アークにより放圧板
が溶損しない放圧装置を提供することを目的とする。The internal pressure rise is caused by a decrease in insulation of an insulating material of electric equipment housed in a closed container.
It is generated by an arc due to an internal short circuit or the like. The arc generated in the closed vessel may shift to a metal pressure relief plate due to an electromagnetic force due to a current at the time of arc generation or a gas flow when releasing internal pressure. The arc transferred to the pressure relief plate melts the fixed part of the pressure relief plate. The melted pressure relief plate scatters with the gas flow to be released. This has the disadvantage of causing harm or damage to surrounding workers and equipment. Therefore, an object of the present invention is to provide a pressure relief device in which the pressure relief plate is not melted by an arc.
【0004】[0004]
【課題を解決するための手段】上記の目的を達成するた
めに、密閉容器の内側の放圧口の放圧板の固定箇所の近
傍にアークホーンを設けるものである。In order to achieve the above-mentioned object, an arc horn is provided near a fixing point of a pressure-releasing plate at a pressure-releasing port inside a closed vessel.
【0005】[0005]
【作用】内部短絡等により密閉容器内で発生したアーク
は、アーク発生時の電流による電磁力や放圧時の放圧口
から放出するガス流の影響により、放圧口へと移行す
る。この時、密閉容器の放圧口に設けたアークホーンが
電極になり、移行したアークはアークホーンに飛び、放
圧板までアークは至らない。従って、放圧板はアークに
より溶損することも飛散することもない。The arc generated in the closed vessel due to an internal short circuit or the like is transferred to the pressure relief port due to the electromagnetic force generated by the current when the arc is generated or the gas flow released from the pressure relief port during pressure release. At this time, the arc horn provided at the pressure release port of the closed vessel becomes an electrode, and the transferred arc jumps to the arc horn and does not reach the pressure release plate. Therefore, the pressure relief plate is neither melted nor scattered by the arc.
【0006】[0006]
【実施例】以下、図面に示した実施例に基づいて詳細を
説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, details will be described based on embodiments shown in the drawings.
【0007】図1において、密閉容器2は開閉器1を収
納しており、密閉容器2にはSF6ガスが封入されてい
る。また、密閉容器2には、内部短絡等により内部ガス
圧力が上昇したときに、密閉容器2が破壊しないよう内
部ガスを安全に放出するための放圧口2aが設けてあ
る。放圧口2aの詳細図を図2(B)に示す。ボルト6
は押え板5を密閉容器2に固定している。押え板5は放
圧板4の固定箇所4bを押え、放圧口2aを塞いでい
る。密閉容器2と放圧板4との間に設けたパッキング3
で密閉容器2を密閉した構造としている。In FIG. 1, an airtight container 2 houses a switch 1, and the airtight container 2 is filled with SF6 gas. The closed vessel 2 is provided with a pressure release port 2a for safely discharging the internal gas so that the closed vessel 2 is not broken when the internal gas pressure increases due to an internal short circuit or the like. FIG. 2B shows a detailed view of the pressure relief port 2a. Bolt 6
The holding plate 5 is fixed to the closed container 2. The presser plate 5 presses the fixing portion 4b of the pressure release plate 4 and closes the pressure release port 2a. Packing 3 provided between closed container 2 and pressure relief plate 4
The closed container 2 is sealed.
【0008】密閉容器2の放圧口2aの内側には、図2
(B)および(C)に示す金属製のアークホーン7を設
ける。アークホーン7は、放圧板4にアークが移行しな
いための保護電極となる。放圧板4は金属製の板を成形
したもので、ある値以上の圧力が放圧板4に加わると、
図3(A)に示す破断部4aで破断する。放圧板4の固
定箇所4bは上述した押え板5で押えられているため、
図3(B)に示すように変形して放圧口2aより圧力を
放出する。The inside of the pressure release port 2a of the closed container 2 is shown in FIG.
A metal arc horn 7 shown in (B) and (C) is provided. The arc horn 7 serves as a protective electrode for preventing the arc from transferring to the pressure release plate 4. The pressure relief plate 4 is formed by molding a metal plate, and when a pressure equal to or higher than a certain value is applied to the pressure relief plate 4,
It breaks at the break 4a shown in FIG. Since the fixing portion 4b of the pressure release plate 4 is pressed by the above-mentioned pressing plate 5,
As shown in FIG. 3 (B), the pressure is released from the pressure release port 2a by deformation.
【0009】密閉容器2の開閉器1において、SF6ガ
スの圧力低下や充電部を支えている絶縁物の絶縁低下に
より、内部短絡等の事故が発生すると、アークエネルギ
ーにより密閉容器2の内部圧力が上昇する。その時、密
閉容器2に設けてある放圧板4は破断し、密閉容器2を
破壊させることなく放圧口2aより内部ガスを安全に放
出する。In the switch 1 of the sealed container 2, when an accident such as an internal short circuit occurs due to a decrease in pressure of SF6 gas or a decrease in insulation of an insulator supporting the charged portion, the internal pressure of the sealed container 2 is reduced by arc energy. Rise. At that time, the pressure release plate 4 provided in the closed container 2 is broken, and the internal gas is safely released from the pressure release port 2a without breaking the closed container 2.
【0010】内部で発生したアークは、アークによる電
流の電磁力や放出するガス流により放圧口2aに導かれ
ることがある。放圧口2aに導かれたアークは密閉容器
2と同電位であるアークホーンへと移る。従って、放圧
板4はアークホーン7で電気的に遮へいされた状態とな
るため、放圧板4がアークにより溶損し飛散することが
ない。The arc generated inside may be guided to the pressure relief port 2a by the electromagnetic force of the electric current generated by the arc or the gas flow to be released. The arc guided to the pressure relief port 2a moves to an arc horn having the same potential as the closed vessel 2. Therefore, since the pressure relief plate 4 is electrically shielded by the arc horn 7, the pressure relief plate 4 is not melted and scattered by the arc.
【0011】放圧板4は図3(A)に示す丸形状のもの
で説明したが、図4に示す角形状のものでも対応でき
る。また、放圧板4は板を成形したもので説明したが、
図5に示すような蓋形状としたものでも適用できる。一
方、固定箇所4bも放圧板4全周とせず、ボルト5で数
箇所を固定しても対応できる。更にアークホーン7は放
圧板4にアークを移行させないために、格子状の金網や
パンチングメタルとすることができる。Although the pressure relief plate 4 has been described as having a round shape as shown in FIG. 3A, a square shape as shown in FIG. 4 can also be used. Also, the pressure relief plate 4 has been described as a molded plate,
A cover shape as shown in FIG. 5 can also be applied. On the other hand, it is also possible to fix the fixing portion 4b not at the entire circumference of the pressure-release plate 4 but at several places with bolts 5. Further, the arc horn 7 can be a lattice-shaped wire mesh or a punched metal so as not to transfer the arc to the pressure release plate 4.
【0012】[0012]
【発明の効果】上述したように、本発明によれば、内部
短絡等で発生したアークが放圧板を溶損させることや密
閉容器を破壊することなく、内部圧力を安全に放出す
る。そのため、周囲の作業者や設備に危害を与えること
はない。また、放圧口へと移行してきたアークはアーク
ホーンにつながるため、アークが密閉容器の外部に飛び
出すこともない。更に、アークホーンは密閉容器内部で
溶損・破損した部品の飛散防止の役割を果たす。とりわ
け、アークホーンが金網やパンチングメタル等の場合は
この効果が大きい。As described above, according to the present invention, an internal pressure can be safely released without causing an arc generated by an internal short circuit or the like to melt the pressure relief plate or break the closed vessel. Therefore, there is no danger to surrounding workers and equipment. Further, since the arc which has moved to the pressure relief port is connected to the arc horn, the arc does not jump out of the closed container. Further, the arc horn plays a role in preventing the parts damaged and damaged inside the closed vessel from scattering. This effect is particularly large when the arc horn is a wire mesh, punched metal, or the like.
【図1】密閉容器の放圧装置を説明するための構造図で
ある。FIG. 1 is a structural diagram for explaining a pressure release device of a closed container.
【図2】放圧装置を拡大したものを示すもので、(A)
は従来より実施されているものの断面図を、(B)はこ
の発明の一例の断面図を、(C)は(B)の斜視図であ
る。FIG. 2 is an enlarged view of a pressure relief device, (A)
1 is a cross-sectional view of a conventional one, (B) is a cross-sectional view of an example of the present invention, and (C) is a perspective view of (B).
【図3】放圧板の単体一例を示すもので、(A)は放圧
前、(B)は放圧後の状態を示す斜視図である。FIG. 3 is a perspective view showing an example of a single pressure release plate, in which (A) shows a state before pressure release and (B) shows a state after pressure release.
【図4】放圧板単体の別の形状を示すものである。FIG. 4 shows another shape of the pressure release plate alone.
【図5】放圧板を蓋形状としたものを示す斜視図であ
る。FIG. 5 is a perspective view showing a pressure release plate having a lid shape.
1 開閉器 2 密閉容器 2a 放圧口 3 パッキング 4 放圧板 5 押え板 6 ボルト 7 アークホーン DESCRIPTION OF SYMBOLS 1 Switch 2 Sealed container 2a Pressure relief port 3 Packing 4 Pressure relief plate 5 Holding plate 6 Bolt 7 Arc horn
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) H02B 1/26 - 1/28 H01H 33/575 H05K 5/03 - 5/06 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) H02B 1/26-1/28 H01H 33/575 H05K 5/03-5/06
Claims (1)
圧板の周囲の一部もしくは全周を固定し、圧力上昇時に
前記放圧板の固定箇所を支点とし放圧板が変形して、放
圧口より圧力を放出する電気機器を収納した密閉容器に
おいて、密閉容器内の放圧板の固定箇所の近傍にアーク
ホーンを設けたことを特徴とする密閉容器の放圧装置。1. A pressure release plate made of metal is provided at a pressure release port, and a part or the entire periphery of the pressure release plate is fixed. When the pressure rises, the pressure release plate is deformed with a fixing point of the pressure release plate as a fulcrum. A pressure-reducing device for a closed container, wherein an arc horn is provided near a fixing portion of a pressure-release plate in the closed container in which an electric device that releases pressure from a pressure release port is housed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP06291982A JP3077132B2 (en) | 1994-11-02 | 1994-11-02 | Pressure relief device for closed container |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP06291982A JP3077132B2 (en) | 1994-11-02 | 1994-11-02 | Pressure relief device for closed container |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08130808A JPH08130808A (en) | 1996-05-21 |
JP3077132B2 true JP3077132B2 (en) | 2000-08-14 |
Family
ID=17775986
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP06291982A Expired - Fee Related JP3077132B2 (en) | 1994-11-02 | 1994-11-02 | Pressure relief device for closed container |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3077132B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8715032B2 (en) | 2010-10-06 | 2014-05-06 | Tomy Company, Ltd. | Spinner for toy top |
KR102040491B1 (en) | 2018-03-05 | 2019-11-05 | 광저우 링동 크리에이티브 컬쳐 테크놀로지 코 엘티디 | Ejection toys |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009055660A (en) * | 2007-08-23 | 2009-03-12 | Mitsubishi Electric Corp | Gas-insulated switch gear |
JP6580853B2 (en) * | 2015-04-01 | 2019-09-25 | 株式会社東芝 | Pressure vessel and method for manufacturing pressure vessel |
-
1994
- 1994-11-02 JP JP06291982A patent/JP3077132B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8715032B2 (en) | 2010-10-06 | 2014-05-06 | Tomy Company, Ltd. | Spinner for toy top |
KR102040491B1 (en) | 2018-03-05 | 2019-11-05 | 광저우 링동 크리에이티브 컬쳐 테크놀로지 코 엘티디 | Ejection toys |
Also Published As
Publication number | Publication date |
---|---|
JPH08130808A (en) | 1996-05-21 |
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