CN104715958A - Earthing switch and disconnecting switch with earthing switch - Google Patents
Earthing switch and disconnecting switch with earthing switch Download PDFInfo
- Publication number
- CN104715958A CN104715958A CN201310690518.8A CN201310690518A CN104715958A CN 104715958 A CN104715958 A CN 104715958A CN 201310690518 A CN201310690518 A CN 201310690518A CN 104715958 A CN104715958 A CN 104715958A
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- CN
- China
- Prior art keywords
- fixed
- contact
- conductive arm
- earthed switch
- switch
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- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/026—Movable parts and contacts mounted thereon
Landscapes
- Switch Cases, Indication, And Locking (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The invention relates to an earthing switch. The earthing switch comprises a movable contact assembly and a fixed contact assembly. The fixed contact assembly comprises a fixed contact and a limiting piece, wherein the limiting piece and the fixed contact are fixed. The movable contact assembly comprises a pair of parallel conductive arms. A gap for the fixed contact to penetrate through is reserved on the inner sides of the conductive arms. A movable contact part is fixed to one end of each conductive arm. In the process of switching on the earthing switch, the movable contact assembly moves towards the fixed contact assembly, the limiting piece prevents the movable contact assembly from continuously moving by being in contact with the conductive arms when the movable contact parts are in good electric contact with the fixed contact. The earthing switch is reliable in performance and low in cost. The invention further discloses a disconnecting switch with the earthing switch.
Description
Technical field
The present invention relates to a kind of earthed switch, particularly relate to the earthed switch for outdoor disconnector in electric power system.In addition, the invention still further relates to the isolating switch adopting this earthed switch.
Background technology
Isolating switch is used for deciliter zero load or light loaded circuit, conversion operation mode and isolation repair apparatus electric equipment in electric power system.During combined floodgate, short-circuit current can be passed through by normal load current and short time for a long time; During separating brake, there is obvious cut-off point so that maintenance and protection.Usually, isolating switch also comprises and its earthed switch of assembling of one, with when needed by isolating switch ground connection, thus guarantees the safety of relevant device and attendant.Isolating switch is the electric equipment of large usage quantity in electric power system and the environment major part that isolating switch uses is vulnerable to outdoor weather conditions out of doors as the impact of sleet, dust etc., therefore, reduce isolating switch cost and improve its reliability be conducive to reduce electric substation, power plant etc. cost and improve security of operation.French Patent (FRP) FR0450491 discloses a kind of earthed switch for isolating switch, wherein adopts linear contact lay between moving contact and fixed contact.
Summary of the invention
The invention provides a kind of earthed switch, its dependable performance and cost is lower.This earthed switch comprises a moving contact component and a static contact component, and wherein said static contact component comprises a fixed contact and a locating part fixed with described fixed contact.Described moving contact component comprises pair of parallel conductive arm, and have the gap allowing described fixed contact to pass inside described conductive arm, one end of conductive arm described in each is fixed with a moving contact part.In the process that described earthed switch closes a floodgate, described moving contact component moves towards described static contact component, and described locating part stops described moving contact component to continue to move by contacting described conductive arm when described moving contact part forms good electrical contact with described fixed contact.Earthed switch of the present invention not only structure is simple and deformation by moving contact part keeps the pressure with fixed contact.
According to one aspect of the present invention, described earthed switch also comprises two collets, and described collets are arranged on the outside of described moving contact part respectively.Collets ensure that elastic contact blade can not damage when being subject to electric power.
According to another aspect of the present invention, described moving contact part is an elastic contact blade, and described elastic contact blade is to lateral buckling in described conductive arm.Compared with the moving contact part being provided with spring, but there is deformation in elastic contact blade self, and without the need to by spring or other device, avoid spring and be in high temperature for a long time under special circumstances and lost efficacy.
According to another aspect of the invention, the spring that described moving contact part comprises a contact and is connected to outside described contact.
According to another aspect of the present invention, described locating part has and corresponds respectively to described conductive arm for a pair and the groove of conductive arm described in receivability.When earthed switch generation electric power, the movement of moving contact part can control in the reasonable scope by the groove of locating part effectively, and moving contact part and fixed contact all can not be sustained damage.
According to another aspect of the present invention, described fixed contact is fixed to a connector, and described locating part is fixed to described connector by a support.The mode that connector and support are fixed has lower cost.
According to another aspect of the present invention, the other end of described conductive arm is used for being fixed to a conducting rod, and described conductive arm is " L " type conduction aluminium sheet.
The present invention also provides a kind of isolating switch, comprise a fixed contact support, post insulator, a conducting rod and an above-mentioned earthed switch, wherein said fixed contact is supported by described fixed contact and is fixed to described post insulator, and the other end of described conductive arm is fixed to described conducting rod.
According to one aspect of the present invention, described fixed contact is fixed to a connector, and described locating part is fixed to described connector by a support, and described connector is supported by described fixed contact and is fixed to described post insulator.
According to another aspect of the present invention, described fixed contact supports and comprises an extension and a fixed block welded with described extension, described extension is fixed to described post insulator by described fixed block, and described connector is fixed to described extension by a fixture.Connector and fixture be combined with the position being beneficial to and adjusting fixed contact in installation process.
Hereafter by clearly understandable mode, accompanying drawings preferred embodiment, is further described above-mentioned characteristic of the present invention, technical characteristic, advantage and implementation thereof.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein,
Fig. 1 schematically illustrates stereogram when earthed switch closes a floodgate from an angle;
Fig. 2 schematically illustrates the stereogram of the earthed switch of Fig. 1 from another angle;
Fig. 3 schematically illustrates stereogram during grounding switch tripping;
Fig. 4 schematically illustrates moving contact part 35;
Fig. 5 schematically illustrates fixed contact 27;
Fig. 6 schematically illustrates locating part 26.
Main device symbol description
2 static contact component 24 fixtures
21 fixed block 25 supports
22 extension 26 locating parts
23 connector 27 fixed contacts
1 post insulator 262 groove
3 moving contact component 31,32 conductive arms
33,34 collets 35 moving contact parts
351 gap, contacts 352
353 fingertip 354,261,271 connecting holes
36 conducting rods
Embodiment
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and the specific embodiment of the present invention is described.Label identical in the drawings represents identical or structural similarity but the identical parts of function, and wherein has the parts of same structure or function, only schematically depict one of them, or has only marked one of them.For making simplified form, only schematically show part related to the present invention in figure, they do not represent its practical structures as product.Herein " connection " or " fixing " represent directly " connection " or " fixing ", or via " connection " or " fixing " of the third party.
As shown in Figures 1 to 3, a moving contact component 3 and a static contact component 2 is comprised according to the earthed switch of one embodiment of the present invention.Static contact component 2 comprises a fixed contact 27 and a locating part 26 fixed with fixed contact 27.Moving contact component 3 comprises pair of parallel conductive arm 31,32, and wherein conductive arm 31,32 is " L " type electrit plate, but also can be the parts adopting analog material and shape.Have the gap allowing fixed contact 27 to pass inside conductive arm 31,32, one end of each conductive arm 31,32 is fixed with a moving contact part 35.In this application, " inner side " refers to the side that conductive arm 31 is relative with conductive arm 32, and " outside " refers to conductive arm 31 and the opposing side of conductive arm 32.Wherein, the distance in this gap should adapt with the thickness of fixed contact 27, and namely this gap allows fixed contact 27 to pass in the clear, can not affect again fixed contact 27 simultaneously and form good electrical contact with moving contact part 35.In the process that earthed switch closes a floodgate, moving contact component 3 moves towards static contact component 2, and locating part 26 stops moving contact component 3 to continue to move by contacting conductive arm 31,32 when moving contact part 35 forms good electrical contact with fixed contact 27.It will be appreciated by those skilled in the art that, locating part 26 can have different shapes, such as have as shown in Figure 6 and correspond respectively to conductive arm 31 and conductive arm 32 for a pair and the groove 262 of receivability conductive arm 31 and conductive arm 32, or for not having plate or the block (not shown) of groove.When earthed switch generation electric power, the movement of moving contact part can control in the reasonable scope by the groove of locating part effectively, and moving contact part and fixed contact all can not be sustained damage.Earthed switch of the present invention not only structure is simple and deformation by moving contact part keeps the pressure with fixed contact.According to illustrated execution mode, moving contact part 35 is an elastic contact blade, and elastic contact blade is to lateral buckling in conductive arm 31,32.Wherein, elastic contact blade has two connecting holes 354 in the one end be connected with conductive arm 32 as shown in Figure 4, and has the fingertip 353 be split to form by several gap 352 in the one end contacted with fixed contact 27.There is in the end of fingertip 353 contact 351 for contacting fixed contact 27.Fingertip preferably adopts Cu alloy material to make, and carries out surface treatment preferably by graphite is silver-plated, has higher self-cleaning ability, can be non-maintaining for a long time.Contact ensure that the stability of contact and reliability and has good dirt-removing power.According to another unshowned execution mode, the spring that moving contact part 35 comprises a contact and is connected to outside this contact, wherein contact is become by T2 copper.Compared with the moving contact part being provided with spring, but there is deformation in elastic contact blade self, and without the need to by spring or other device, avoid spring and be in high temperature for a long time under special circumstances and lost efficacy.
Fixed contact 27 is fixed to a connector 23 by the connecting hole 271 shown in Fig. 5, and locating part 26 is fixed to connector 23 by a support 25, and two holes 261 wherein on locating part 26 are for connection bracket 25.It will be understood by those skilled in the art that and also connector and support can be made a part, but the connector be separated and support have lower cost.By bolt or screw, fixed contact 27 and locating part 26 being fixed to connector 23 makes the relative position of fixed contact 27 and locating part 26 fix, thus limits the position of moving contact part 35 when moving contact part 35 forms good electrical contact with fixed contact 27.Wherein, fixed contact 27 is become by T2 copper, and locating part 26 is made up of insulating material (such as laminated epoxy glass-cloth board).Conductive arm 31 and conductive arm 32 are " L " type, and one end of conductive arm 31 and conductive arm 32 is used for being fixed on a conducting rod 36, and the other end is used for fixing moving contact part 35.Earthed switch also comprises two collets 33,34, and collets 33 and collets 34 are arranged on outside moving contact part 35 respectively, and wherein collets ensure that elastic contact blade can not damage when being subject to electric power.
Still as shown in Figures 1 to 3, fixed contact support, a post insulator 1, conducting rod 36 and an above-mentioned earthed switch is comprised according to the isolating switch of one embodiment of the present invention, wherein fixed contact 27 is supported by fixed contact and is fixed to post insulator 1, and the other end of conductive arm 31,32 is fixed to conducting rod 36.Fixed contact 27 is fixed to a connector 23, and locating part 26 is fixed to connector 23 by a support 25, and connector 23 is supported by fixed contact and is fixed to post insulator 1.Specifically, fixed contact supports and comprises an extension 22 and a fixed block 21 welded with extension 22, and extension 22 is fixed to post insulator 1 by a fixed block 21, and connector 23 is fixed to extension 22 by a fixture 24.In Fig. 1 to 3, connector 23 is connected with fixture 24 by two bolts, and after bolt tightening, static contact component 2 would not rotate.By being first connected with fixture 24 by connector 23, after extension 22 adjusts the position of the contact 27 that is fond of tranquility, then by aforementioned bolt tightening, be conducive to the position adjusting fixed contact in installation process easily.
Be to be understood that, although this specification describes according to each execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, technical scheme in each execution mode also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
In this article, " schematically " expression " serves as example, example or explanation ", not should by being described to any diagram of " schematically " in this article, execution mode is interpreted as a kind of preferred or have more the technical scheme of advantage.
The foregoing is only the schematic embodiment of the present invention, and be not used to limit scope of the present invention.Any those skilled in the art, the equivalent variations done under the prerequisite not departing from design of the present invention and principle, amendment and combination, all should belong to the scope of protection of the invention.
Claims (10)
1. an earthed switch, comprises a moving contact component (3) and a static contact component (2), and wherein said static contact component (2) comprises a fixed contact (27) and a locating part (26) fixed with described fixed contact (27),
Described moving contact component (3) comprises pair of parallel conductive arm (31,32), described conductive arm (31,32) inner side has the gap allowing described fixed contact (27) to pass, and one end of conductive arm described in each (31,32) is fixed with a moving contact part (35);
In the process that described earthed switch closes a floodgate, described moving contact component (3) is towards described static contact component (2) motion, and described locating part (26) stops described moving contact component (3) to continue to move by contacting described conductive arm (31,32) when described moving contact part (35) forms good electrical contact with described fixed contact (27).
2. earthed switch as claimed in claim 1, wherein said earthed switch also comprises two collets (33,34), and described collets (33,34) are arranged on the outside of described moving contact part (35) respectively.
3. earthed switch as claimed in claim 1 or 2, wherein said moving contact part (35) is an elastic contact blade, and described elastic contact blade is to described conductive arm (31,32) interior lateral buckling.
4. earthed switch as claimed in claim 1 or 2, the spring that wherein said moving contact part (35) comprises a contact and is connected to outside described contact.
5. earthed switch as claimed in claim 1, wherein said locating part (26) has and corresponds respectively to described conductive arm (31,32) for a pair and the groove (262) of conductive arm (31,32) described in receivability.
6. earthed switch as claimed in claim 1, wherein said fixed contact (27) is fixed to a connector (23), and described locating part (26) is fixed to described connector (23) by a support (25).
7. earthed switch as claimed in claim 1, the other end of wherein said conductive arm (31,32) is used for being fixed to a conducting rod (36), and described conductive arm (31,32) is " L " type conduction aluminium sheet.
8. an isolating switch, comprise a fixed contact support, post insulator (1), a conducting rod (36) and the earthed switch according to any one of the claims 1 to 5, wherein said fixed contact (27) is supported by described fixed contact and is fixed to described post insulator (1), and the other end of described conductive arm (31,32) is fixed to described conducting rod (36).
9. isolating switch as claimed in claim 8, wherein said fixed contact (27) is fixed to a connector (23), and described locating part (26) is fixed to described connector (23) by a support (25), described connector (23) is supported by described fixed contact and is fixed to described post insulator (1).
10. isolating switch as claimed in claim 8, wherein said fixed contact supports and comprises an extension (22) and a fixed block (21) welded with described extension (22), described extension (22) is fixed to described post insulator (1) by described fixed block (21), and described connector (23) is fixed to described extension (22) by a fixture (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310690518.8A CN104715958B (en) | 2013-12-16 | 2013-12-16 | A kind of earthed switch and its disconnecting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310690518.8A CN104715958B (en) | 2013-12-16 | 2013-12-16 | A kind of earthed switch and its disconnecting switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104715958A true CN104715958A (en) | 2015-06-17 |
| CN104715958B CN104715958B (en) | 2017-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310690518.8A Active CN104715958B (en) | 2013-12-16 | 2013-12-16 | A kind of earthed switch and its disconnecting switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104715958B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390326A (en) * | 2015-11-24 | 2016-03-09 | 许继集团有限公司 | Disconnecting switch and switch equipment using the same |
| WO2021174545A1 (en) * | 2020-03-06 | 2021-09-10 | Abb Power Grids Switzerland Ag | Switch, contact protection assembly and manufacturing method thereof |
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|---|---|---|---|---|
| EP1575067A1 (en) * | 2004-03-10 | 2005-09-14 | Areva T&D S.p.A. | Pivoting earthing switch with direct insertion and simple movement |
| CN201112246Y (en) * | 2007-09-14 | 2008-09-10 | 山东泰开隔离开关有限公司 | External pressure type sensing finger structure of outdoor high-voltage electrical apparatus ground switch |
| CN201247719Y (en) * | 2008-08-12 | 2009-05-27 | 中国石化集团胜利石油管理局电力管理总公司 | Outdoor vertical hanging monopole isolation switch |
| CN201408696Y (en) * | 2009-03-30 | 2010-02-17 | 北京煜联达电力设备有限公司 | Contact finger device of high-voltage isolating switch contact |
| CN201590600U (en) * | 2009-12-08 | 2010-09-22 | 丹东电力设备厂 | Insulating sleeve for outdoor high-voltage disconnector |
| CN201820643U (en) * | 2010-09-17 | 2011-05-04 | 苏州安泰变压器有限公司 | High voltage knife switch |
| CN201985012U (en) * | 2010-11-08 | 2011-09-21 | 林志艺 | Edge structure of alternating current (AC) high voltage isolator |
| CN202423098U (en) * | 2012-01-12 | 2012-09-05 | 石家庄开发区新导配电自动化有限公司 | Disconnector with horizontally rotatable single arm of driving shaft |
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2013
- 2013-12-16 CN CN201310690518.8A patent/CN104715958B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1575067A1 (en) * | 2004-03-10 | 2005-09-14 | Areva T&D S.p.A. | Pivoting earthing switch with direct insertion and simple movement |
| CN201112246Y (en) * | 2007-09-14 | 2008-09-10 | 山东泰开隔离开关有限公司 | External pressure type sensing finger structure of outdoor high-voltage electrical apparatus ground switch |
| CN201247719Y (en) * | 2008-08-12 | 2009-05-27 | 中国石化集团胜利石油管理局电力管理总公司 | Outdoor vertical hanging monopole isolation switch |
| CN201408696Y (en) * | 2009-03-30 | 2010-02-17 | 北京煜联达电力设备有限公司 | Contact finger device of high-voltage isolating switch contact |
| CN201590600U (en) * | 2009-12-08 | 2010-09-22 | 丹东电力设备厂 | Insulating sleeve for outdoor high-voltage disconnector |
| CN201820643U (en) * | 2010-09-17 | 2011-05-04 | 苏州安泰变压器有限公司 | High voltage knife switch |
| CN201985012U (en) * | 2010-11-08 | 2011-09-21 | 林志艺 | Edge structure of alternating current (AC) high voltage isolator |
| CN202423098U (en) * | 2012-01-12 | 2012-09-05 | 石家庄开发区新导配电自动化有限公司 | Disconnector with horizontally rotatable single arm of driving shaft |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390326A (en) * | 2015-11-24 | 2016-03-09 | 许继集团有限公司 | Disconnecting switch and switch equipment using the same |
| WO2021174545A1 (en) * | 2020-03-06 | 2021-09-10 | Abb Power Grids Switzerland Ag | Switch, contact protection assembly and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104715958B (en) | 2017-12-12 |
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Effective date of registration: 20211208 Address after: Munich, Germany Patentee after: Siemens Energy International Address before: Munich, Germany Patentee before: SIEMENS AG |
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