CN1815831A - Shutter - Google Patents
Shutter Download PDFInfo
- Publication number
- CN1815831A CN1815831A CNA2005100758797A CN200510075879A CN1815831A CN 1815831 A CN1815831 A CN 1815831A CN A2005100758797 A CNA2005100758797 A CN A2005100758797A CN 200510075879 A CN200510075879 A CN 200510075879A CN 1815831 A CN1815831 A CN 1815831A
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- CN
- China
- Prior art keywords
- blade
- side terminal
- insulation
- shutter
- backplate
- 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.)
- Granted
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- Patch Boards (AREA)
- Gas-Insulated Switchgears (AREA)
- Knives (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
This invention provides a switch gear of knife edge type in which a blade rotates to perform a switching operation, the switch gear having an improved voltage withstanding performance by moderating the electric field at an end of the blade. The switch gear has a rotating side terminal (3) connected to one main conductor 2, a blade (4) of a strip shape conductor member having one end rotatably supported onto the rotating side terminal (3), and a fixed side terminal connected to another main conductor (5) and configured to come in contact with and depart from another end of the blade (4). A shield member (13) having an insulation covering is fixed onto the blade (4) such that the shield member (13) covers a width surface of the blade (4), with the edge of shield (13) extending over the edge and the tip of the blade (4).
Description
Technical field
The present invention relates to blade (Block レ one De) and rotate the knife-edge shutter that opens and closes, especially relate to blade or fixation side terminal backplate (シ one Le De) structure.
Background technology
Shutter in the past, for example as being used from the band grounding opening-closing device circuit breaker of gas-insulated switchgear with vacuum interruption device one, disclosed following a kind of circuit breaker, promptly, whole folding and unfolding is in casing, going up the end that swing is provided with the blade of conductivity freely with a distolateral blade rack that is electrically connected (being equivalent to rotating side terminal of the present invention) of vacuum interruption device, another of blade is distolateral to be contacted by the blade (being equivalent to fixation side terminal of the present invention) of the bus terminal board that is electrically connected with bus bar side or the blade (being equivalent to ground connection side terminal of the present invention) of earth terminal platform, separate, major loop is opened and closed or ground connection (with reference to patent documentation 1).
When blade was in off-state, blade and bus bar side terminal, blade and ground connection side terminal, blade and casing need be guaranteed the insulation distance stipulated, and whole size becomes the size that is subjected to the insulation distance restriction.In order to dwindle shutter, surround the technology of the backplate of conductive part as setting, for example, disclosed a kind of fixed side electrode and be configured in the roughly inside of the insulating cylinder of four jiaos of bodies of peristome with U font with circuit breaker, plate electrode (backplate) is imbedded in 2 sides of the insulating cylinder beyond the side of the peristome that forms the U font, with movable contact and the folding and unfolding of major loop bonding conductor in the peristome of U font, improve withstand voltage properties, realize the gas insulation breaker (with reference to patent documentation 2) of miniaturization.
[patent documentation 1] Japanese patent laid-open 11-185577 communique (the 5th page, Fig. 1)
[patent documentation 2] Japanese patent laid-open 11-252721 communique (the 2nd page, Fig. 1～Fig. 3)
Enclose SF in the casing of the gas-insulated switchgear of the structure shown in the patent documentation 1 in the past
6The insulating gas that such insulation property are good, but for the viewpoint that prevents global warmingization, this SF in recent years
6The use of gas is in restricted trend, and gas uses dry air just gradually as an alternative.The dielectric strength of dry air compares SF
6Gas is poor, and the words of Shi Yonging can cause maximizing like this.For this reason, for example, use dry air in the shutter of patent documentation 1 record, and for miniaturization, even use the backplate of such embedded electrode of patent documentation 2 records, select to refer to (Off イ Application ガ one) or bonding conductor because of importing in the backplate,, have the problem of guard board structure complexity, high price in addition so backplate maximizes.
Summary of the invention
The present invention proposes in order to address the above problem, and its purpose is, at the shutter of blade rotation to open and close, provides a kind of electric field that can relax blade tip and fixation side terminal ends, improves withstand voltage properties, realizes the shutter of miniaturization.
Shutter of the present invention comprises: the rotating side terminal that is connected with a side bus-bars conductor; With a distolateral rotation freely the earth's axis be bearing in blade on this rotating side terminal, that constitute by the band plate-like conductor component; Be configured to be connected with the opposing party's bus-bars conductor and with the other end side contacts of blade, the fixation side terminal that separates, with implemented insulation-coated backplate with the face width that covers blade (Japanese: in the time of breadth) from the width end of blade (Japanese: width of cloth end) and the other end of the blade form of stretching out be arranged on the blade.
In addition, the end face from the fixation side terminal is arranged on the fixation side terminal to the form that blade-side is stretched out when having implemented insulation-coated backplate and cover face with the chimeric fixation side terminal of blade with blade when closed.
Adopt shutter of the present invention, be arranged on the blade from the form that the other end of the width end of blade and blade stretches out when covering the face width of blade having implemented insulation-coated backplate, so can relax the electric field of blade tip, improve withstand voltage properties, thereby can make the shutter miniaturization.
In addition, be arranged on the fixation side terminal having implemented the form that insulation-coated backplate covers when closed with blade with the chimeric surface of the chimeric fixation side terminal of blade, so can relax the electric field of fixation side terminal ends, the raising withstand voltage properties.
The simple declaration of accompanying drawing
Fig. 1 is the end view of the shutter of expression example 1 of the present invention.
Fig. 2 is the front view that expression is seen from the II-II of Fig. 1.
Fig. 3 is the details drawing of the A portion of presentation graphs 2.
Fig. 4 is the cutaway view of major part of fixation side terminal of the shutter of expression example 2 of the present invention.
Embodiment
Example 1
Fig. 1 is the end view of the shutter of example 1, and Fig. 2 is the front view that expression is seen from the II-II of Fig. 1, and Fig. 3 is the details drawing of the A portion of presentation graphs 2.The shutter of this example is that example is represented with the occasion of the circuit breaker of the band grounding opening-closing device that is used for switchgear.
The circuit breaker of the band grounding opening-closing device of folding and unfolding in container 1 comprises: the rotating side terminal 3 that is electrically connected with a side bus-bars conductor 2; With a distolateral rotation freely the earth's axis be bearing in blade 4 on this rotating side terminal 3, that constitute by the band plate-like conductor component; Be configured to be electrically connected with the opposing party's bus-bars conductor 5 and with another distolateral (front) contact of blade 4, the fixation side terminal 6 that separates; Be electrically connected, can contact, separate, be configured in the ground connection side terminal 7 of a relative side of fixation side terminal 6 across blade 4 with blade 4 another distolateral (front) with not shown earthing conductor.
As shown in Figure 2, the form apart from e between 3 phase spacing d with the maintenance regulation reach over the ground is configured in the container 1.
The outside at 2 blades 4 that dispose relatively, be that two sides that blade 4 does not contact with fixation side terminal 6 and ground connection side terminal 7 are equipped with and have implemented insulation-coated 14 backplate 13, the width of this backplate 13 is wideer slightly than the width of blade 4, stretches out from the width end and the other end (front end) of blade 4.Shown in the details drawing of Fig. 3, fastening fixing from interior side direction before with 4 combinations of 2 blades in the installation of blade 4 by bolt 15.Then, be provided with through hole 13a shown in Figure 1, so that do not interfere when fastening 2 vane group being merged with fastening part 9 with fastening parts 9 in backplate 13 sides.
The material of backplate 13 for example uses aluminium etc., and insulation-coated 14 material for example uses epoxy resin etc.
Here, insulation-coated 14 thickness is preferably more than the 1mm.In addition, the leading section that comprises insulation-coated 14 backplate 13 is stretched out more than the 2mm at least from the front end of blade 4.Equally, on Width, the width end from the width end of blade 4 to backplate 13, a side is more than the 2mm.Blade 4 is mounted to insulation-coated 14 of backplate 13 and leaves the above gap of 1mm at least.
Then action is described.Be used for switchgear the band grounding opening-closing device circuit breaker usually and the vacuum interruption device be connected in series.Therefore, the bus-bars conductor 2 that is connected with rotating side terminal 3 for example is connected with one distolateral (not shown) of breaker, and the bus-bars conductor 5 that is connected with fixation side terminal 6 for example is connected with the lining (not shown) that connects container 1.Under the "on" position of breaker closure, the blade 4 of circuit breaker is connected with fixation side terminal 6, is in on-position.Selectively drive by drive unit 12, when breaker disconnected, circuit breaker also disconnected, and was in off position shown in Figure 1, during with a distolateral ground connection of breaker, connected towards ground connection side terminal 7 sides, became earthing position.
As the specification of such circuit breaker, for example, general rated voltage is 12～84kV, and rated current is 600A～1500A degree.
Then the effect to the backplate 13 of being located at blade 4 describes.
In addition, backplate 13 is during than the narrow width of blade 4, or when being in front end inboard of blade 4, the effect that relaxes electric field reduces.By found that of checking,, just can expect the effect that enough electric fields relax as long as the width end and the front end of backplate 13 from blade stretched out more than the 2mm.
In addition, when blade 4 contacted with insulation-coated 14 of backplate 13, this part became triple points (ト リ プ Le ジ ヤ Application Network シ ヨ Application), produced discharge from contact portion sometimes.As its countermeasure, find as long as insulation-coated 14 identity distance blade 4 of backplate 13 is left installing with gap more than the 1mm, wait and also can not contact even vibration takes place when rotating.
By such structure, can relax the electric field of blade 4 ends, can improve between blade 4 and the container 1, the withstand voltage properties between blade 4 and the fixation side terminal 6, between blade 4 and the ground connection side terminal 7.That is, can dwindle size a, b, the c of Fig. 1.And the effect by backplate 13 and insulation-coated 14 improves withstand voltage properties, can dwindle size d, the e shown in the front view of Fig. 2.
Therefore, even using dry air to replace the occasion of the such insulating gas of SF6 gas, also can provide the shutter that does not have great changes with the gas isolated occasion size of SF6 and can keep insulation property.
Abovely be illustrated as the situation of circuit breaker of shutter to the band grounding opening-closing device, but be not limited thereto, also circuit breaker monomer and grounding opening-closing device monomer are so long as the shutter of knife-edge can obtain same effect.
In addition, blade is that the structure with 2 band plate-like conductor component configured in parallel is illustrated, also by 1 structure that constitutes.
As mentioned above, invention according to this example, in the shutter of knife-edge, be arranged on the blade from the form that the other end of the width end of blade and blade stretches out when covering the face width of blade having implemented backplate after insulation-coated, thereby can relax the leading section of blade and the electric field of Width end, can improve withstand voltage properties.Therefore, can dwindle between blade and the container, between blade and the fixation side terminal, the alternate size of other 3 phase time blades, can make its container miniaturization of shutter and folding and unfolding.
In addition, insulation-coated thickness is made more than the 1mm, and stretches out from blade end and to be of a size of more than the 2mm, so can give full play to the mitigation and the withstand voltage properties of above-mentioned electric field.
And the insulation-coated of blade and backplate left the above gap of 1mm at least, thereby can prevent triple converging, and improves withstand voltage properties.
Example 2
Fig. 4 is the cutaway view of major part of fixation side terminal of the shutter of expression example 2 of the present invention.Shutter integral body is for example equal with Fig. 1 of example 1, and the Therefore, omited is to the explanation of shutter integral body and the explanation of action, and equal part is quoted prosign and described.The part suitable with the fixation side terminal 6 of Fig. 1 is the fixation side terminal 16 of Fig. 4, and this figure is the figure that sees from the closing direction of blade.
As shown in the figure, the backplate 17 of having implemented insulation-coated 18 is arranged on two sides of fixation side terminal 16, when promptly blade 4 is closed and on the face of the chimeric fixation side terminal 16 of blade 4, and is arranged to cover its chimeric surface.Installation is backplate 17 fastening the fixing that will clip from the both sides of fixation side terminal 16 with bolt 19.At this moment, the end of having implemented insulation-coated 18 backplate 17 is stretched out fixing from the end of fixation side terminal 16 towards blade-side.The size of stretching out is preferably in more than the 2mm.If more than the 2mm, just can fully expect the effect that electric field relaxes.
More than in the explanation, the situation that backplate is set on the fixation side terminal is illustrated, but also comprises the ground connection side terminal of grounding opening-closing device on this fixation side terminal.In addition, be used in combination as blade with example 1, then more effective.
As mentioned above, invention according to this example, the form of having stretched out towards blade-side from the end face of fixation side terminal when having implemented backplate after insulation-coated and cover face with the chimeric fixation side terminal of blade with blade when closed is arranged on the fixation side terminal, thereby can relax the electric field of the end of fixation side terminal, can improve withstand voltage properties.Therefore, help the miniaturization of shutter.
The possibility of utilizing on the industry
Can be widely used in leaf actuator, the ground connection of using in gas insulation opening and closing arrangement and the switchgear The shutter of shutter etc.
Claims (4)
1. a shutter comprises: the rotating side terminal that is connected with a side bus-bars conductor; With a distolateral rotation freely the earth's axis be bearing in blade on this rotating side terminal, that constitute by the band plate-like conductor component; Be configured to be connected with the opposing party's bus-bars conductor and with the other end side contacts of blade, the fixation side terminal that separates, it is characterized in that, be arranged on the described blade from the form that the width end and the described other end of described blade stretches out when covering described blade surperficial wide having implemented insulation-coated backplate.
2. shutter as claimed in claim 1 is characterized in that, described insulation-coated thickness is more than the 1mm, and stretches out from described blade end and to be of a size of more than the 2mm.
3. shutter as claimed in claim 1 or 2 is characterized in that, described blade and describedly have the above gap of 1mm between insulation-coated at least.
4. a shutter comprises: the rotating side terminal that is connected with a side bus-bars conductor; With a distolateral rotation freely the earth's axis be bearing in blade on this rotating side terminal, that constitute by the band plate-like conductor component; Be configured to be connected with the opposing party's bus-bars conductor and with the other end side contacts of blade, the fixation side terminal that separates, it is characterized in that the end face from described fixation side terminal when having implemented insulation-coated backplate and cover face with the chimeric described fixation side terminal of described blade with described blade when closed is arranged on the described fixation side terminal to the form that described blade-side is stretched out.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005029162A JP4440794B2 (en) | 2005-02-04 | 2005-02-04 | Switch |
| JP2005029162 | 2005-02-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1815831A true CN1815831A (en) | 2006-08-09 |
| CN100481661C CN100481661C (en) | 2009-04-22 |
Family
ID=36907867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100758797A Expired - Fee Related CN100481661C (en) | 2005-02-04 | 2005-05-20 | Shutter |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4440794B2 (en) |
| CN (1) | CN100481661C (en) |
| HK (1) | HK1092290A1 (en) |
| TW (1) | TWI280715B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101609762B (en) * | 2008-06-16 | 2012-11-28 | 日本Ae帕瓦株式会社 | Blade-shaped circuit breaker |
| US9466955B2 (en) | 2013-03-28 | 2016-10-11 | Abb Schweiz Ag | Knife switch, a switching device comprising a knife switch and a switchgear |
| CN111758142A (en) * | 2018-03-06 | 2020-10-09 | 株式会社日立产机系统 | Switch with a switch body |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5324530B2 (en) * | 2010-07-02 | 2013-10-23 | 株式会社日立製作所 | High voltage switchgear |
| KR102437644B1 (en) * | 2022-02-28 | 2022-08-29 | 주식회사 누리라인 | High Voltage Knife Switch for Railway Vehicles |
| GB2622045A (en) * | 2022-08-31 | 2024-03-06 | Eaton Intelligent Power Ltd | Branch busbar device |
-
2005
- 2005-02-04 JP JP2005029162A patent/JP4440794B2/en active Active
- 2005-04-19 TW TW094112377A patent/TWI280715B/en not_active IP Right Cessation
- 2005-05-20 CN CNB2005100758797A patent/CN100481661C/en not_active Expired - Fee Related
-
2006
- 2006-11-23 HK HK06112862.4A patent/HK1092290A1/en unknown
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101609762B (en) * | 2008-06-16 | 2012-11-28 | 日本Ae帕瓦株式会社 | Blade-shaped circuit breaker |
| US9466955B2 (en) | 2013-03-28 | 2016-10-11 | Abb Schweiz Ag | Knife switch, a switching device comprising a knife switch and a switchgear |
| CN105264627B (en) * | 2013-03-28 | 2017-03-22 | Abb 技术有限公司 | A knife switch, a switching device comprising a knife switch and a switchgear |
| CN111758142A (en) * | 2018-03-06 | 2020-10-09 | 株式会社日立产机系统 | Switch with a switch body |
| CN111758142B (en) * | 2018-03-06 | 2022-07-05 | 株式会社日立产机系统 | Switch with a switch body |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI280715B (en) | 2007-05-01 |
| CN100481661C (en) | 2009-04-22 |
| TW200629681A (en) | 2006-08-16 |
| HK1092290A1 (en) | 2007-02-02 |
| JP2006216448A (en) | 2006-08-17 |
| JP4440794B2 (en) | 2010-03-24 |
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Granted publication date: 20090422 |