CN104715958B - A kind of earthed switch and its disconnecting switch - Google Patents
A kind of earthed switch and its disconnecting switch Download PDFInfo
- Publication number
- CN104715958B CN104715958B CN201310690518.8A CN201310690518A CN104715958B CN 104715958 B CN104715958 B CN 104715958B CN 201310690518 A CN201310690518 A CN 201310690518A CN 104715958 B CN104715958 B CN 104715958B
- Authority
- CN
- China
- Prior art keywords
- static contact
- contact
- fixed
- conductive arm
- earthed switch
- 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.)
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Classifications
-
- 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
- Elimination Of Static Electricity (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The present invention relates to a kind of earthed switch, including a moving contact component and a static contact component, wherein the static contact component includes a static contact and a locating part fixed with the static contact.The moving contact component includes a pair of parallel conductive arm, has the gap for allowing the static contact to pass through on the inside of the conductive arm, one end of each conductive arm is fixed with a moving contact part.During the earthed switch closes a floodgate, the moving contact component moves towards the static contact component, and the locating part prevents the moving contact component from continuing to move by contacting the conductive arm when the moving contact part forms good electrical contact with the static contact.The dependable performance and cost of earthed switch of the present invention are relatively low.Also a kind of disconnecting switch using this earthed switch of the invention.
Description
Technical field
The present invention relates to a kind of earthed switch, is opened more particularly to the ground connection for being used for outdoor disconnector in power system
Close.Moreover, it relates to the disconnecting switch using this earthed switch.
Background technology
Disconnecting switch is to be used for zero load division or light loaded circuit, conversion operation mode and isolation maintenance in power system
The electrical equipment of equipment.During combined floodgate, short-circuit current can be passed through by normal load current and short time for a long time；Point
During lock, there is obvious cut-off point in order to overhaul and protect.Generally, the ground connection that disconnecting switch also includes integrally assembling with it is opened
Close, to be when needed grounded disconnecting switch, so that it is guaranteed that the safety of relevant device and attendant.Disconnecting switch is power train
Environment used in the larger electrical equipment of dosage and disconnecting switch is most of in system is vulnerable to the weather bar of open air out of doors
The influence of part such as sleet, dust etc., therefore, reduce the cost of disconnecting switch and improve its reliability advantageously reduce electric substation,
The cost of power plant etc. simultaneously improves safe for operation.French Patent (FRP) FR0450491 discloses a kind of earthed switch for disconnecting switch,
Linear contact lay is used wherein between moving contact and static contact.
The content of the invention
The present invention provides a kind of earthed switch, its dependable performance and cost is relatively low.The earthed switch includes a moving contact
Component and a static contact component, wherein what the static contact component was fixed including a static contact and one with the static contact
Locating part.The moving contact component includes a pair of parallel conductive arm, and having on the inside of the conductive arm allows the static contact to wear
The gap crossed, one end of each conductive arm are fixed with a moving contact part.During the earthed switch closes a floodgate,
The moving contact component moves towards the static contact component, and the locating part passes through in the moving contact part and the stationary contact
Capitiform prevents the moving contact component from continuing to move into the conductive arm is contacted during good electrical contact.The ground connection of the present invention is opened
Pass is not only simple in structure and can keep the pressure with static contact by the deformation of moving contact part.
According to one aspect of the present invention, the earthed switch also includes two collets, and the collets are installed respectively
In the outside of the moving contact part.Collets ensure that elastic contact blade will not damage when by electric power.
According to another aspect of the present invention, the moving contact part is an elastic contact blade, and the elastic contact blade is to described
Bent on the inside of conductive arm.Compared with the moving contact part for being provided with spring, elastic contact blade itself can deform upon, without passing through
Spring or other devices, avoid spring and failed for a long time in high temperature under special circumstances.
According to another aspect of the invention, the moving contact part includes a contact and is connected on the outside of the contact
Spring.
According to another aspect of the present invention, the locating part, which has a pair, to be corresponded respectively to the conductive arm and can receive institute
State the groove of conductive arm.When electric power occurs for earthed switch, the groove of locating part can effectively control the movement of moving contact part
System is in the reasonable scope so that moving contact part and static contact are not damaged.
According to another aspect of the present invention, the static contact is fixed to a connector, and the locating part passes through one
Support is fixed to the connector.The mode that connector is fixed with support has lower cost.
According to another aspect of the present invention, the other end of the conductive arm is used to be fixed to a conducting rod, and described leads
Electric arm is " L " type conduction aluminium sheet.
The present invention also provides a kind of disconnecting switch, including static contact support, a support insulator, a conducting rod
And above-mentioned earthed switch, wherein the static contact is fixed to the support insulator by static contact support, it is described to lead
The other end of electric arm is fixed to the conducting rod.
According to one aspect of the present invention, the static contact is fixed to a connector, and the locating part passes through one
Support is fixed to the connector, and the connector is fixed to the support insulator by static contact support.
According to another aspect of the present invention, the static contact support includes an extension and one is welded with the extension
The fixed block connect, the extension are fixed to the support insulator by the fixed block, and the connector is solid by one
Determine part and be fixed to the extension.The position being combined with beneficial to the adjustment static contact in installation process of connector and fixture.
Hereafter by a manner of clearly understandable, preferred embodiment is described with reference to the drawings, above-mentioned characteristic, technology to the present invention
Feature, advantage and its implementation are further described.
Brief description of the drawings
The following drawings is only intended to do schematic illustration and explanation to the present invention, 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 Fig. 1 earthed switch from another angle；
Fig. 3 schematically illustrates stereogram during grounding switch tripping；
Fig. 4 schematically illustrates moving contact part 35；
Fig. 5 schematically illustrates static contact 27；
Fig. 6 schematically illustrates locating part 26.
Main device symbol description
The fixture of 2 static contact component 24
The support of 21 fixed block 25
The locating part of 22 extension 26
The static contact of 23 connector 27
The groove of 1 support insulator 262
3 moving contact components 31,32 conductive arms
33rd, the moving contact part of 34 collets 35
The gap of 351 contact 352
The connecting hole of 353 fingertip 354,261,271
36 conducting rods
Embodiment
In order to which technical characteristic, purpose and the effect of the present invention is more clearly understood, now control illustrates this hair
Bright embodiment.Identical label represents that identical or structure is similar but function identical part in figure, and wherein has
There is the part of identical structure or function, only symbolically depict one of those, or only marked one of those.To make figure
Face is succinct, and part related to the present invention is only schematically show in figure, and they do not represent its reality as product
Structure." connect " herein or " fixation " represent directly " connection " or " fixation ", or via the third party " connection " or " Gu
It is fixed ".
As shown in Figures 1 to 3, a moving contact component 3 and one is included according to the earthed switch of one embodiment of the present invention
Individual static contact component 2.Static contact component 2 includes a static contact 27 and a locating part 26 fixed with static contact 27.It is dynamic to touch
Head assembly 3 includes a pair of parallel conductive arm 31,32, and wherein conductive arm 31,32 is " L " type electrit plate, but is alternatively and uses phase
Like the part of material and shape.The inner side of conductive arm 31,32 has the gap for allowing static contact 27 to pass through, each conductive arm 31,32
One end be fixed with a moving contact part 35.In this application, " inner side " refer to conductive arm 31 and conductive arm 32 it is relative one
Side, and " outside " refers to conductive arm 31 and the opposite side of conductive arm 32.Wherein, the distance in the gap should be with the thickness of static contact 27
Degree is adapted, i.e., the gap allows static contact 27 to pass through in the clear, while does not interfere with static contact 27 and moving contact portion again
Part 35 forms good electrical contact.During earthed switch closes a floodgate, moving contact component 3 moves towards static contact component 2, and limits
Position part 26 prevents dynamic touch by contacting conductive arm 31,32 when moving contact part 35 forms good electrical contact with static contact 27
Head assembly 3 continues to move.It will be understood by those skilled in the art that locating part 26 can have different shapes, such as shown in Figure 6
Conductive arm 31 and conductive arm 32 are corresponded respectively to a pair and can receive the groove 262, Huo Zhewei of conductive arm 31 and conductive arm 32
Plate or block without groove（It is not shown）.When electric power occurs for earthed switch, the groove of locating part can be by moving contact part
Movement is efficiently controlled in zone of reasonableness so that moving contact part and static contact are not damaged.The ground connection of the present invention
Switch is not only simple in structure and can keep the pressure with static contact by the deformation of moving contact part.Embodiment party according to diagram
Formula, moving contact part 35 is an elastic contact blade, and elastic contact blade is bent to the inner side of conductive arm 31,32.Wherein, elastic contact blade is such as
There are shown in Fig. 4 two connecting holes 354 in one end be connected with conductive arm 32, and the one end contacted with static contact 27 with by
The fingertip 353 that several gaps 352 are split to form.There is the contact 351 for being used for contacting static contact 27 in the end of fingertip 353.Touch
Finger is preferably made of Cu alloy material, and is preferably surface-treated by the way that graphite is silver-plated, has higher self-cleaning ability, can
With non-maintaining for a long time.Contact ensure that the stability of contact and reliability and have good dirt-removing power.According to it is another not
The embodiment shown, moving contact part 35 include a contact and the spring that is connected on the outside of the contact, wherein contact by
T2 coppers into.Compared with the moving contact part for being provided with spring, elastic contact blade itself can deform upon, without by spring or
Other devices, avoid spring and failed for a long time in high temperature under special circumstances.
Static contact 27 is fixed to a connector 23 by the connecting hole 271 shown in Fig. 5, and locating part 26 passes through a branch
Frame 25 is fixed to connector 23, and wherein two on locating part 26 hole 261 is used for connecting bracket 25.Those skilled in the art will manage
Solution, connector and support can be also made to a part, but the connector separated has lower cost with support.Pass through spiral shell
Static contact 27 and locating part 26 are fixed to connector 23 and the relative position of static contact 27 and locating part 26 are consolidated by bolt or screw
It is fixed, so as to limit the position of moving contact part 35 when moving contact part 35 and static contact 27 form good electrical contact.Wherein,
Static contact 27 is by T2 coppers into and locating part 26 is by insulating materials（Such as laminated epoxy glass-cloth board）It is made.The He of conductive arm 31
Conductive arm 32 is " L " type, and one end of conductive arm 31 and conductive arm 32 is used to be fixed on a conducting rod 36, and the other end is used to fix
Moving contact part 35.Earthed switch also includes two collets 33,34, and collets 33 and collets 34 are separately mounted to moving contact
The outside of part 35, wherein collets ensure that elastic contact blade will not damage when by electric power.
Still as shown in Figures 1 to 3, static contact support, one are included according to the disconnecting switch of one embodiment of the present invention
Individual 1, conducting rod 36 of support insulator and above-mentioned earthed switch, wherein static contact 27 are fixed to by static contact support
Support insulator 1, the other end of conductive arm 31,32 are fixed to conducting rod 36.Static contact 27 is fixed to a connector 23, and limits
Position part 26 is fixed to connector 23 by a support 25, and connector 23 is fixed to support insulator 1 by static contact support.Tool
For body, static contact support includes an extension 22 and a fixed block 21 welded with extension 22, and extension 22 passes through
One fixed block 21 is fixed to support insulator 1, and connector 23 is fixed to extension 22 by a fixture 24.In Fig. 1 to 3
In, two bolts connect connector 23 and fixture 24, and after bolt is tightened, static contact component 2 would not rotate.By first will
Connector 23 is connected with fixture 24, is adjusted and is fond of tranquility behind the position of contact 27 on extension 22, then foregoing bolt is tightened, and is had
Beneficial to the position that static contact is easily adjusted in installation process.
It should be appreciated that although this specification is described according to each embodiment, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical scheme in each embodiment may also be suitably combined to form people in the art
The other embodiment that member is appreciated that.
Herein, " schematic " expression " serving as example, example or explanation ", will should not be described herein as " showing
Any diagram, the embodiment of meaning property " are construed to a kind of preferred or more advantageous technical scheme.
The schematical embodiment of the present invention is the foregoing is only, is not limited to the scope of the present invention.It is any
Those skilled in the art, equivalent variations, modification and the combination made on the premise of the design of the present invention and principle is not departed from,
The scope of protection of the invention all should be belonged to.
Claims (9)
1. a kind of earthed switch, including a moving contact component (3) and a static contact component (2), wherein the static contact group
Part (2) includes a static contact (27) and a locating part (26) fixed with the static contact (27),
The moving contact component (3) includes a pair of parallel conductive arm (31,32), has on the inside of the conductive arm (31,32) and permits
Perhaps the gap that described static contact (27) passes through, one end of each conductive arm (31,32) are fixed with a moving contact part
(35)；
During the earthed switch closes a floodgate, the moving contact component (3) is moved towards the static contact component (2), and institute
Locating part (26) is stated by contacting institute when the moving contact part (35) forms good electrical contact with the static contact (27)
Conductive arm (31,32) is stated to prevent the moving contact component (3) from continuing to move, wherein the locating part (26) has a pair of difference
Corresponding to the conductive arm (31,32) and the groove (262) of the conductive arm (31,32) can be received.
2. earthed switch as claimed in claim 1, wherein the earthed switch also includes two collets (33,34), it is described
Collets (33,34) are separately mounted to the outside of the moving contact part (35).
3. earthed switch as claimed in claim 1 or 2, wherein the moving contact part (35) is an elastic contact blade, it is described
Elastic contact blade is bent to the conductive arm (31,32) inner side.
4. earthed switch as claimed in claim 1 or 2, wherein the moving contact part (35) includes a contact and connection
Spring on the outside of the contact.
5. earthed switch as claimed in claim 1, wherein the static contact (27) is fixed to a connector (23), and it is described
Locating part (26) is fixed to the connector (23) by a support (25).
6. earthed switch as claimed in claim 1, wherein the other end of the conductive arm (31,32) is used to lead fixed to one
Electric pole (36), and the conductive arm (31,32) is " L " type conduction aluminium sheet.
7. a kind of disconnecting switch, including a static contact support, a support insulator (1), a conducting rod (36) and such as
Earthed switch any one of the claims 1 to 4, wherein the static contact (27) is supported admittedly by the static contact
Surely the support insulator (1) is arrived, the other end of the conductive arm (31,32) is fixed to the conducting rod (36).
8. disconnecting switch as claimed in claim 7, wherein the static contact (27) is fixed to a connector (23), and it is described
Locating part (26) is fixed to the connector (23) by a support (25), and the connector (23) passes through the static contact branch
Support is fixed to the support insulator (1).
9. disconnecting switch as claimed in claim 8, wherein static contact support include an extension (22) and one and
The fixed block (21) of extension (22) welding, the extension (22) are fixed to the pillar by the fixed block (21)
Insulator (1), the connector (23) are fixed to the 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 CN104715958A (en) | 2015-06-17 |
| CN104715958B true 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) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390326B (en) * | 2015-11-24 | 2018-01-09 | 许继集团有限公司 | Disconnecting switch and the switchgear using the disconnecting switch |
| CN115244641A (en) * | 2020-03-06 | 2022-10-25 | 日立能源瑞士股份公司 | Switch, contact protection assembly and manufacturing method thereof |
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 |
-
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 |
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| Publication number | Publication date |
|---|---|
| CN104715958A (en) | 2015-06-17 |
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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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