WO2023053261A1 - 開閉装置のリング状コイルスプリングおよびこれを用いた開閉装置 - Google Patents
開閉装置のリング状コイルスプリングおよびこれを用いた開閉装置 Download PDFInfo
- Publication number
- WO2023053261A1 WO2023053261A1 PCT/JP2021/035833 JP2021035833W WO2023053261A1 WO 2023053261 A1 WO2023053261 A1 WO 2023053261A1 JP 2021035833 W JP2021035833 W JP 2021035833W WO 2023053261 A1 WO2023053261 A1 WO 2023053261A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ring
- spring
- shaped
- coil spring
- conductor
- Prior art date
Links
- 239000004020 conductor Substances 0.000 claims description 50
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000007769 metal material Substances 0.000 abstract description 8
- 229910000831 Steel Inorganic materials 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/44—Contacts characterised by the manner in which co-operating contacts engage by sliding with resilient mounting
-
- 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
- H01H33/64—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid wherein the break is in gas
- H01H33/65—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid wherein the break is in gas wherein the break is in air at atmospheric pressure, e.g. in open air
-
- 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
- H02B13/035—Gas-insulated switchgear
- H02B13/045—Details of casing, e.g. gas tightness
Definitions
- This application relates to a ring-shaped coil spring for a switchgear and a switchgear using the same.
- the switchgear consists of a main circuit section to which high voltage is applied, an operation mechanism section that drives the main circuit switchgear, and a control circuit section.
- the main circuit section (1) the opening and closing parts of the switch, (2) the parts connecting the switch and other equipment that do not function when fixed with bolts, or (3) bolts from the viewpoint of assembly. There are places where fastening is difficult. At these locations, conductor connections are made using contactors instead of fastening with bolts.
- This contact is equipped with a garter spring that has the necessary contact pressure load to ensure the function of not only conducting the normal current of the switchgear, but also conducting large currents for short periods of time. (See Patent Document 1, for example).
- garter springs with different spring loads are required in order to correspond to the lineup of various contactors of switchgear, so the number of types of parts increases. Conversely, if the garter spring corresponding to the maximum energized current is used as the standard specification, there is a problem that the quality will be excessive for products with a small energized current.
- the present application has been made to solve the above problems, and it is an object of the present invention to provide a ring-shaped coil spring for a switchgear that can obtain a necessary contact load without increasing the types of ring-shaped coil springs. aim.
- the ring-shaped coil spring of the switchgear disclosed in the present application is mounted around the conductor, and is characterized by having a ring-shaped spring in the coil for increasing the contact load with the conductor.
- the necessary contact load can be obtained without increasing the types of ring-shaped coil springs.
- FIG. 1 is a side cross-sectional view of a gas-insulated switchgear according to Embodiment 1.
- FIG. 4 is an enlarged cross-sectional view of a conductor contact portion according to Embodiment 1; FIG. It is a sectional view of a ring-shaped coil spring.
- FIG. 2 is a perspective view of a ring-shaped spring according to Embodiments 1 and 2; 4 is a cross-sectional view of a ring-shaped coil spring to which the ring-shaped spring according to Embodiment 1 is attached;
- FIG. FIG. 8 is a cross-sectional view of a conductor contact portion using a coil spring contact according to Embodiment 2;
- FIG. 8 is a cross-sectional view of a coil spring contact to which a ring-shaped spring is mounted according to Embodiment 2;
- the ring-shaped coil spring of the opening/closing device according to the present application can be applied to switchgears in general, but in the present embodiment, a gas-insulated switchgear will be described as an example.
- the same reference numerals are assigned to the same contents and corresponding parts, and detailed description thereof will be omitted. In the following embodiments as well, redundant descriptions of the configurations denoted by the same reference numerals will be omitted.
- FIG. 1 is a side cross-sectional view of a gas-insulated switchgear
- FIG. 2 is an enlarged cross-sectional view of a conductor contact portion.
- a gas-insulated switchgear 1 includes a circuit breaker 2 , a disconnecting switch and a grounding switch 3 , a bus 4 , a power cable 6 , and the like mounted in a closed container 5 . Insulating gas is enclosed in the closed container 5 .
- a connection portion between the conductor 7 a in the closed container 5 and the conductor 7 b of the power cable 6 is defined as a conductor contact portion 7 .
- the conductor contact portion 7 is a portion that is difficult to fasten with a bolt.
- the connecting portion 12 between the circuit breaker 2 and the conductor or the connecting portion 13 between the grounding switch 3 and the conductor is connected by a bolt in FIG. You can also In this case, one conductor is connected to conductor 7a and the other conductor is connected to conductor 7b.
- a conductor contact structure is generally used for the opening/closing portion of the switch itself.
- the conductor contact portion 7 is around the conductor 7a and the conductor 7b, contacts the conductor 7a and the conductor 7b, and is mounted with a contactor 7c so as to sandwich them.
- Three ring-shaped coil springs 7d are arranged around the contactor 7c to apply a necessary load to the contactor 7c in order to fix the conductors 7a and 7b.
- the ring-shaped coil spring 7d is made of a general spring metal material such as piano wire, hard steel wire, or stainless steel wire, and is formed into a ring shape as shown in FIG.
- Conductors 7a, 7b, and contacts 7c are made of a highly conductive material such as copper or aluminum. In FIG. 2, the conductors 7a and 7b are in contact with the contactor 7c, respectively, and the contactor 7c is applied with a radially inward load of the ring-shaped coil spring 7d.
- a contact load is generated between the contactor 7c and the conductor 7a, and between the contactor 7c and the conductor 7b.
- current can flow through the paths of the conductor 7a and the contactor 7c, and between the contactor 7c and the conductor 7b.
- a larger current is applied, a larger electromagnetic repulsive force is generated at the contact portion, so a high contact load is required to suppress the electromagnetic repulsive force.
- a ring-shaped spring 8a is attached to the ring-shaped coil spring 7d in order to apply this high contact load.
- a spring metal material such as piano wire, hard steel wire, or stainless steel wire is used for the ring-shaped spring 8a. As shown in FIG. 4, this spring metal material is formed into a ring shape, and a part thereof is overlapped. The diameter of the ring of the ring-shaped spring 8a is adjusted in advance to the inner diameter of the ring-shaped coil spring.
- FIG. 5 is a cross-sectional view of a ring-shaped coil spring 7d to which a ring-shaped spring 8a is attached.
- a ring-shaped spring 8a is mounted along the inner peripheral side inside the coil of the ring-shaped coil spring 7d so as to match the inner diameter of the ring-shaped coil spring 7d.
- the ring-shaped spring 8a is mounted inside the ring-shaped coil spring 7d by passing the tip of the ring-shaped spring 8a through the spring gap of the ring-shaped coil spring 7d.
- the contact load is increased by standardizing the ring-shaped coil spring 7d without increasing the types of the ring-shaped coil spring 7d, and using the ring-shaped coil spring 7d with the additional ring-shaped spring 8a only when the applied current is large. can be done.
- the ring-shaped spring 8a to be inserted prevents the ring-shaped coil spring 7d from coming off even when the joint is detached due to manufacturing defects in the joint due to welding or caulking of the ring-shaped coil spring 7d itself. There are also possible effects.
- the number of ring-shaped springs 8a to be inserted into the ring-shaped coil springs 7d is not limited to one, and two or more may be mounted. As a result, the load that compresses the ring-shaped spring 8a radially inward can be adjusted by changing the number of the ring-shaped springs 8a. When two or more springs are mounted, the material of the ring-shaped spring 8a may be changed, or the diameter of the ring may be changed to change the radially inward compressive load.
- a ring-shaped spring 8a wound more than twice may be used. This makes it possible to adjust the load that compresses the ring-shaped spring 8a radially inward by changing the number of turns.
- FIG. 6 is a cross-sectional view of a conductor contact portion of a contact using a ring-shaped coil spring (hereinafter referred to as a coil spring contact) according to Embodiment 2.
- a coil spring contact a ring-shaped coil spring
- FIG. 2 Since the ring-shaped coil spring 7d shown in FIG. 2 is made of a general metal material for springs, such as piano wire, hard steel wire, and stainless steel wire, its current-carrying performance itself is low.
- energization is performed via the contactor 7c.
- the application of the contact pressure is performed by the ring-shaped coil spring 7d.
- the coil spring contact 9 in FIG. 6 uses a spring metal material with good electrical conductivity such as a copper alloy, and the coil spring contact 9 itself has the functions of both electrical conductivity and application of contact pressure. As shown in FIG. 6, by attaching the coil spring contact 9 to the cylindrical conductor 10 and inserting it into the recessed conductor 11, the path between the cylindrical conductor 10 and the coil spring contact 9 and the path between the coil spring contact 9 and the recessed conductor 11 are formed. can be energized.
- FIG. 7 is a cross-sectional view of the coil spring contact to which the ring-shaped spring shown in Embodiment 2 is attached.
- a ring-shaped spring 8a matching the inner diameter of the ring-shaped coil spring 7d is added to add a radially inward spring load.
- the coil spring contact 9 applies a contact load to both the inside and the outside. That is, as shown in FIG. 7, a ring-shaped spring 8a along the inner and inner circumference of the coil of the coil spring contact 9 is matched with the inner diameter of the coil spring contact 9, and a coil spring contact is aligned with the outer diameter of the coil spring contact 9.
- a ring-shaped spring 8a along the inner and inner circumference of the coil of the coil spring contact 9 is matched with the inner diameter of the coil spring contact 9, and a coil spring contact is aligned with the outer diameter of the coil spring contact 9.
- a spring metal material such as piano wire, hard steel wire, or stainless steel wire is used for the ring-shaped spring 8b. As shown in FIG. 4, this spring metal material is formed into a ring shape, and a part thereof is overlapped. The diameter of the ring of the ring-shaped spring 8b is adjusted in advance to the diameter of the outer peripheral side of the ring-shaped coil spring.
- the ring-shaped spring 8b is mounted inside the coil spring contact 9 by passing the tip of the ring-shaped spring 8b through the spring gap of the coil spring contact 9. As shown in FIG.
- the ring-shaped spring 8b to be inserted into the ring-shaped coil spring 7d is not limited to one, and two or more may be mounted, like the ring-shaped spring 8a.
- the load that compresses the ring-shaped spring 8b radially outward can be adjusted by changing the number of the ring-shaped springs 8b.
- the material of the ring-shaped spring 8b may be changed, or the diameter of the ring may be changed to change the compressive load radially outward.
- the ring-shaped spring 8b may be wound twice or more. This makes it possible to adjust the load that compresses the ring-shaped spring 8b radially inward by changing the number of turns.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Springs (AREA)
- Contacts (AREA)
Abstract
Description
図1はガス絶縁開閉装置の側部断面図、図2は導体接触部の拡大断面図である。ガス絶縁開閉装置1は、密閉容器5に遮断器2、断路器および接地開閉器3、母線4、および電力ケーブル6などが搭載されている。密閉容器5内には絶縁ガスが封入されている。密閉容器5内の導体7aと電力ケーブル6の導体7bとの接続部分を導体接触部7とする。
図6は、実施の形態2に示すリング状コイルスプリングを用いたコンタクト(以下コイルスプリングコンタクト)の導体接触部の断面図である。図2に示したリング状コイルスプリング7dはピアノ線、硬鋼線、ステンレス鋼線などの一般的なばね用の金属材料で製作されているため、それ自体の通電性能は低い。図2の実施の形態1では、接触子7cを介して通電を行う。接触圧力の付与は、リング状コイルスプリング7dが行うというように機能が分かれていた。
組立時はリング状のばね8bの先端を、コイルスプリングコンタクト9のばねの隙間から通していくことで、コイルスプリングコンタクト9の内部にリング状のばね8bを装着する。
従って、例示されていない無数の変形例が、本願明細書に開示される技術の範囲内において想定される。例えば、少なくとも1つの構成要素を変形する場合、追加する場合または省略する場合、さらには、少なくとも1つの構成要素を抽出し、他の実施の形態の構成要素と組み合わせる場合が含まれるものとする。
Claims (6)
- 導体の周囲に装着される開閉装置のリング状コイルスプリングにおいて、コイル内に、前記導体との接触荷重を増加するためのリング状のばねを備えたことを特徴とする開閉装置のリング状コイルスプリング。
- 前記導体は、2つの導体を挟持して固定するための接触子であることを特徴とする請求項1に記載の開閉装置のリング状コイルスプリング。
- コイル内の内周側に沿って前記リング状のばねが装着されていることを特徴とする請求項1または2に記載の開閉装置のリング状コイルスプリング。
- 第1の導体に挿入して接続するように形成された第2の導体の周囲に装着された開閉装置のリング状コイルスプリングにおいて、前記第1の導体に対する接触荷重を増加するように、リング状のばねがコイル内の外周側に沿って装着されていることを特徴とする開閉装置のリング状コイルスプリング。
- 前記第2の導体に対する接触荷重を増加するために、前記リング状のばねとは別のリング状のばねがコイル内の内周側に沿って装着されていることを特徴とする請求項4に記載の開閉装置のリング状コイルスプリング。
- 請求項1から5のいずれか一項に記載の開閉装置のリング状コイルスプリングを備えた開閉装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2022503837A JP7046295B1 (ja) | 2021-09-29 | 2021-09-29 | 開閉装置のリング状コイルスプリングおよびこれを用いた開閉装置 |
CN202180102424.7A CN117957733A (zh) | 2021-09-29 | 2021-09-29 | 开关装置的环状螺旋弹簧及使用该弹簧的开关装置 |
PCT/JP2021/035833 WO2023053261A1 (ja) | 2021-09-29 | 2021-09-29 | 開閉装置のリング状コイルスプリングおよびこれを用いた開閉装置 |
TW111134705A TW202314757A (zh) | 2021-09-29 | 2022-09-14 | 開閉裝置之環狀螺旋彈簧及使用其之開閉裝置 |
Applications Claiming Priority (1)
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PCT/JP2021/035833 WO2023053261A1 (ja) | 2021-09-29 | 2021-09-29 | 開閉装置のリング状コイルスプリングおよびこれを用いた開閉装置 |
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WO2023053261A1 true WO2023053261A1 (ja) | 2023-04-06 |
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PCT/JP2021/035833 WO2023053261A1 (ja) | 2021-09-29 | 2021-09-29 | 開閉装置のリング状コイルスプリングおよびこれを用いた開閉装置 |
Country Status (4)
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JP (1) | JP7046295B1 (ja) |
CN (1) | CN117957733A (ja) |
TW (1) | TW202314757A (ja) |
WO (1) | WO2023053261A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07151619A (ja) * | 1993-11-30 | 1995-06-16 | Fuji Electric Co Ltd | 電力用機器差込み接続部の接触圧力測定装置 |
JPH08203366A (ja) * | 1995-01-31 | 1996-08-09 | Mitsubishi Electric Corp | チューリップコンタクト装置 |
WO2009128134A1 (ja) * | 2008-04-14 | 2009-10-22 | 三菱電機株式会社 | 接触子 |
JP5188176B2 (ja) | 2007-12-28 | 2013-04-24 | 三菱電機株式会社 | 接地開閉器 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3421734A (en) * | 1965-12-22 | 1969-01-14 | Trw Inc | Valve rotating device |
-
2021
- 2021-09-29 CN CN202180102424.7A patent/CN117957733A/zh active Pending
- 2021-09-29 JP JP2022503837A patent/JP7046295B1/ja active Active
- 2021-09-29 WO PCT/JP2021/035833 patent/WO2023053261A1/ja active Application Filing
-
2022
- 2022-09-14 TW TW111134705A patent/TW202314757A/zh unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07151619A (ja) * | 1993-11-30 | 1995-06-16 | Fuji Electric Co Ltd | 電力用機器差込み接続部の接触圧力測定装置 |
JPH08203366A (ja) * | 1995-01-31 | 1996-08-09 | Mitsubishi Electric Corp | チューリップコンタクト装置 |
JP5188176B2 (ja) | 2007-12-28 | 2013-04-24 | 三菱電機株式会社 | 接地開閉器 |
WO2009128134A1 (ja) * | 2008-04-14 | 2009-10-22 | 三菱電機株式会社 | 接触子 |
Also Published As
Publication number | Publication date |
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JPWO2023053261A1 (ja) | 2023-04-06 |
TW202314757A (zh) | 2023-04-01 |
CN117957733A (zh) | 2024-04-30 |
JP7046295B1 (ja) | 2022-04-01 |
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