CN106229207A - Shield gold utensil and use the disconnecting switch of this shielding gold utensil - Google Patents
Shield gold utensil and use the disconnecting switch of this shielding gold utensil Download PDFInfo
- Publication number
- CN106229207A CN106229207A CN201610706129.3A CN201610706129A CN106229207A CN 106229207 A CN106229207 A CN 106229207A CN 201610706129 A CN201610706129 A CN 201610706129A CN 106229207 A CN106229207 A CN 106229207A
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- CN
- China
- Prior art keywords
- gold utensil
- insulator
- perforation
- dynamic
- side shield
- 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
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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
- H01H31/02—Details
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
The present invention relates to a kind of disconnecting switch shielding gold utensil and using this shielding gold utensil.All being arranged on the top flange dish of respective strut insulator in disconnecting switch by insulator perforation by the dynamic and static side shield gold utensil of the present invention, the internal cavities of shielding gold utensil is by the top flange dish of support insulator and the complete envelope of upper conductor that is arranged on top flange dish with being conductively connected.It is additionally provided with the operating mechanism connecting rod perforation that the upper end for operating mechanism connecting rod passes on dynamic side shield gold utensil, for not hindering the contact of dynamic/static contact to turn on, the gold utensil body of dynamic and static side shield gold utensil is equipped with the moving contact perforation passed for moving contact.After shielding gold utensil is by the top flange dish of corresponding support insulator and the corresponding complete envelope of side conductor, electric field intensity concentrates on edge of each perforation and makes to shield gold utensil internal electric intensity is zero, and the aperture of perforation turns edge, along the arc of place's setting, the electric field intensity significantly reduced at bore edges and makes the electric field intensity on whole disconnecting switch top reduce.
Description
Technical field
The present invention relates to a kind of disconnecting switch shielding gold utensil and using this shielding gold utensil.
Background technology
The advantages such as direct current transportation has that transmission distance is remote, transmission line capability is big, line loss is little, easily controllable and regulation, because of
And be widely used in the power system of China, the disconnecting switch being applied in direct current transportation has obtained extensively the most therewith
General application.For the concrete structure such as Chinese patent of disconnecting switch of ± 1100kV change of current occasion in prior art
Described in one disclosed in CN103219190A ± 1100kV high-voltage direct current isolation switch, including quiet side assembly and dynamic side assembly,
Quiet side assembly includes quiet wing base, the quiet side composite post insulator being arranged on quiet wing base and is arranged on quiet side composite post
The quiet upper lateral part conductor of insulator upper end, quiet upper lateral part conductor includes static contact.Dynamic side assembly include dynamic wing base, be arranged on dynamic
Dynamic side composite post insulator on wing base, moving contact and be arranged on the dynamic upper lateral part of composite post insulator upper end, dynamic side and lead
Body, dynamic upper lateral part conductor includes that operating mechanism upper end is for the conducting rod driving moving contact to move and for the outlet outwards powered
Plate (i.e. a kind of leading-out terminal).Moving contact realizes towards static contact lateral movement closing a floodgate or being directed away under the driving of operating mechanism
Static contact lateral movement and realize separating brake.For avoiding the insulator flange dish in disconnecting switch with upper conductor because of local electric field strength
Excessive and discharge, it is provided with the equal trim ring of triangle on the top of composite post insulator, the end of conducting rod is provided with use
In the shielding ball improving conducting rod Analysis of End Electric Field.Have the disadvantage that during this direct-current isolating switch produces and uses: one is
Different shielding gold utensil it is set at the different sharp corners of upper conductor and to cause the component number of direct-current isolating switch more；
Two is that the gusset sharp corner of upper conductor can not be shielded by equal trim ring, thus electric field is concentrated at the gusset of upper conductor
And cause electric discharge flashover.
Summary of the invention
It is an object of the invention to provide a kind of shielding that high-voltage charged body in disconnecting switch can be shielded completely
Gold utensil, the present invention also aims to provide the disconnecting switch using above-mentioned shielding gold utensil.
For achieving the above object, the present invention shields the technical scheme of gold utensil and is:
Shielding gold utensil, has the gold utensil body of cavity including all round closure, middle part, gold utensil body offers for corresponding part
End, by stretch into the perforation in described cavity, the inwall of gold utensil body is provided with arc in the aperture Yan Chu bored a hole and turns edge.
Described arc turns edge with the aperture bored a hole along seamlessly transitting.
Described gold utensil body includes being connected smoothly and in the horizontal direction of the spherical crown on top and bottom with described spherical crown
The plane extended.
The support fixed above that described arc turns edge has the attachment structure for being connected with corresponding part.
The technical scheme of disconnecting switch of the present invention is:
Disconnecting switch, including spaced quiet side assembly and dynamic side assembly, quiet side assembly includes quiet lateral brace insulator and sets
Putting the quiet upper lateral part conductor on the top flange dish of quiet lateral brace insulator, dynamic side assembly includes dynamic lateral brace insulator, sets
Put the dynamic upper lateral part conductor on the top flange dish of dynamic lateral brace insulator and moving contact, the top method of quiet lateral brace insulator
It is provided with on the top flange dish of quiet side shield gold utensil and/or dynamic lateral brace insulator on blue dish and is provided with dynamic side shield gold utensil,
Dynamic and static side shield gold utensil all includes the gold utensil body of all round closure, and the middle part of gold utensil body has can insulate corresponding lateral brace
Sub-upper flanges dish and the cavity of the complete envelope of upper conductor, gold utensil body is provided with the upper hold-carrying for corresponding lateral brace insulator
Blue dish is through to stretch into the insulator perforation in described cavity and the moving contact perforation passed for moving contact, the inwall of gold utensil body
On be provided with arc turn edge in the aperture Yan Chu of insulator perforation and moving contact perforation；Also set on the gold utensil body of dynamic side shield gold utensil
There is the upper end for operating mechanism connecting rod through the operating mechanism connecting rod perforation to stretch in described cavity, the gold of dynamic side shield gold utensil
The aperture Yan Chu bored a hole in operating mechanism connecting rod on the inwall of tool body is provided with arc and turns edge.
Being additionally provided with leading-out terminal on the top flange dish of dynamic lateral brace insulator, the gold utensil of corresponding earthquake side shield gold utensil is originally
Be additionally provided with on body for the wire that is connected on leading-out terminal by the wire perforation passed in described cavity, on the inwall of gold utensil body in
The aperture Yan Chu of wire perforation is provided with arc and turns edge.
The gold utensil body of dynamic and static side shield gold utensil all includes the spherical crown on top and seamlessly transitting even with described spherical crown of bottom
Connecing and horizontally extending plane, insulator perforation and the perforation of operating mechanism connecting rod on dynamic side shield gold utensil are all opened in
In the plane of the gold utensil body of dynamic side shield gold utensil, the insulator perforation on quiet side shield gold utensil is opened in quiet side shield gold utensil
In the plane of gold utensil body.
Described disconnecting switch is on the top flange dish of lateral brace insulator and/or quiet lateral brace insulator to be provided with to connect
The isolation earthing switch of ground switch static contact, on the gold utensil body of corresponding earthquake side shield gold utensil and/or quiet side shield gold utensil also
Be provided with for moving contact of grounding switch through with stretch in described cavity earthed switch contact perforation, on the inwall of gold utensil body in
The aperture Yan Chu of earthed switch contact perforation is provided with arc and turns edge.
On gold utensil body in insulator perforation opening's edge at arc turn edge on be fixedly installed for respective strut insulate
The insulator flange attachment structure that ring flange on son connects.
The upper end that arc at edge, insulator perforation aperture turns edge is fixedly installed the first connecting plate, and described insulator flange is even
Access node structure includes being fixed on the edge above the first connecting plate by bolt support that is that be intervally arranged in horizontal plane and that extend up and down
The second connecting plate that horizontal direction extends.
The invention has the beneficial effects as follows: by the dynamic and static side shield gold utensil of the present invention all by insulator perforation be arranged on every
Leaving on the top flange dish of Central Shanxi Plain respective strut insulator, the internal cavities of shielding gold utensil is by the top flange of support insulator
Dish and the complete envelope of upper conductor being arranged on top flange dish with being conductively connected.It is additionally provided with for actuating on dynamic side shield gold utensil
The operating mechanism connecting rod perforation that the upper end of mechanism rod passes, for not hindering the contact of dynamic/static contact to turn on, dynamic and static side shield gold
The moving contact perforation passed for moving contact it is equipped with on the gold utensil body of tool.At shielding gold utensil by the top of corresponding support insulator
After portion's ring flange and the corresponding complete envelope of side conductor, electric field intensity concentrates on the edge of each perforation and makes to shield in gold utensil
Portion's electric field intensity is zero, and the aperture of perforation turns edge, along the arc of place's setting, the electric field intensity significantly reduced at bore edges and makes
The electric field intensity on whole disconnecting switch top reduces.
Accompanying drawing explanation
Fig. 1 is an embodiment of the disconnecting switch of present invention structural representation of dynamic side assembly under gate-dividing state；
Fig. 2 is the side view of Fig. 1；
Fig. 3 is the front view of dynamic side shield gold utensil in Fig. 1；
Fig. 4 is the left view of Fig. 3；
Fig. 5 is the right view of Fig. 3；
Fig. 6 is the top view of Fig. 3；
Fig. 7 is the upward view of Fig. 3；
Fig. 8 is the sectional view after being provided with insulator flange attachment structure in Fig. 1 on dynamic side shield gold utensil.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiments of the present invention are described further.
The specific embodiment of the disconnecting switch of the present invention, including dynamic side assembly and quiet side assembly, the concrete knot of dynamic side assembly
Structure as shown in Figures 1 to 8, the dynamic side composite post insulator that including support 1, is fixedly installed on support 1 and be arranged at dynamic side
Moving contact 41 on composite post insulator upper flanges dish and dynamic upper lateral part conductor 4.Quiet side assembly includes quiet side composite post
Insulator and be arranged at the static contact on the composite post insulator upper flanges dish of quiet side.Dynamic side composite post insulator includes point
Cloth includes the outlet for outwards power supply at the three single support insulators of post 2 on Atria summit, dynamic upper lateral part conductor 4
Plate 42 and for coordinating the static contact of grounding switch realizing disconnecting switch ground connection with moving contact of grounding switch, moves side assembly and also includes
For driving moving contact 41 to move to coordinate the operating mechanism realizing divide-shut brake with static contact.Specifically, the contact arm of moving contact 41
When being driven by operating mechanism and straighten to level, moving contact 41 contacts with the static contact in the assembly of quiet side and realizes closing a floodgate；
When the contact arm of moving contact is driven by operating mechanism and makes its middle elbow joint be folded upward at, contact arm becomes state straight up after folding
Depart from static contact and realize separating brake.Operating mechanism connecting rod 3 guiding movement along the vertical direction in operating mechanism arranges and is positioned at three
The middle part of individual support insulator 2.The upper end of support insulator 2 is fixedly installed can be by the upper flanges of three support insulators 3
Dish, outlet board 42, the complete envelope of static contact of grounding switch dynamic side shield gold utensil 5 therein.Quiet side assembly also includes wrapping completely
Network static contact and the quiet side shield gold utensil of quiet side composite post insulator upper flanges dish, quiet side shield gold utensil is provided with for dynamic
Contact 41 penetrates the perforation connecting conduction with the static contact interior with it, can be to "on" position by this kind of mode quiet side shield gold utensil
Under the incision position of dynamic and static contact carry out envelope mask.In other embodiments, it is applied to, when disconnecting switch, the occasion that voltage is relatively low
Time, disconnecting switch can not also have grounding function, and now static contact of grounding switch also can save, and shielding gold utensil is opened for ground connection
The earthed switch contact perforation that pass moving contact stretches into also can be saved.
Dynamic side shield gold utensil 5 includes that all round closure, middle part have the gold utensil body of cavity.Gold utensil body includes spherical crown shape
Upper body and the lower body of plate-like, lower body includes at plane lower surface and surrounding with lower surface arc transition
Curved surface, upper body seamlessly transits with the junction of lower body.Offer on the upper surface of gold utensil body in outlet board 42
Wire draw outlet board perforation 53 and for moving contact 41 by it pass with contact with static contact conducting moving contact bore a hole 52.By
During divide-shut brake, the movement locus of moving contact 41 is that irregular camber line (namely all has position in the horizontal direction with above-below direction
Move), moving contact perforation 52 is the elongated hole being opened on spherical crown.
Support insulator perforation 55, the confession stretched into the upper end for support insulator 2 is offered on the lower surface of gold utensil body
Operating mechanism connecting rod that operating mechanism connecting rod 3 passes perforation 54 and the earthed switch contact passed for corresponding static contact of grounding switch
Perforation 56.The lower body of plate-like not only contributes to support insulator perforation 55, operating mechanism connecting rod perforation 54 and earthed switch
Offering of contact perforation 56, also reduces dynamic side shield gold utensil 5 in the case of achieving dynamic upper lateral part conductor 4 full-shield
Volume.
For avoiding electric field at the edge, aperture of above-mentioned each perforation to gather and the flashover that discharges, the internal face of gold utensil body touches in dynamic
Head perforation 52, outlet board perforation 53, operating mechanism connecting rod perforation 54, support insulator perforation 55 and earthed switch contact perforation 56
Aperture Yan Chu be provided with radius and turn edge 57 not less than the circular arc of 200mm, circular arc turn edge 57 with the aperture of respective perforations along smooth
Transition.
Dynamic side shield gold utensil 5 is achieved a fixed connection by insulator flange attachment structure and support insulator 3.Specifically
Say, support insulator bore a hole the circular arc on 55 edges, aperture turn edge 57 upper end be fixedly installed middle part there is the first connecting plate of through hole
551, the first connecting plate 551 is directed away from the direction at center, hole in the horizontal direction and extends, and the top of the first connecting plate 551 is by level
Support fixed by the bolt being intervally arranged in face the second connecting plate 552, the second connecting plate 552 is provided with and support insulator 3 upper end
The connecting bolt 553 that ring flange is adaptive, threaded section of connecting bolt 553 be positioned at lower end with hold-carrying on support insulator 3
Blue dish connects.This design form can be by realizing the height of the second connecting plate 552 and levelness to the regulation of connecting bolt 553
Regulation, it is to avoid the dynamic and static contact caused because alignment error exists and the inappropriate problem in position of corresponding wire hole.At other
In embodiment, in the case of can guarantee that processing and installation dimension precision, the second connecting plate also can save but be made by the first connecting plate
It is connected with the fixing of support insulator to realize dynamic side shield gold utensil for insulator flange attachment structure.
For ease of this dynamic side shield gold utensil 5 is transported, first by dynamic side shield gold utensil 5 along Fig. 8 transverse cuts seam
58 and longitudinally cutting seam 59 cut into four pieces, then transport respectively.Transport behind scene, by each piece of splicing at support insulator 2
Upper end is so that the dynamic side shield gold utensil 5 after split can move upper lateral part conductor by envelope completely.When dynamic side shield gold utensil is cut
Should avoid cutting to above-mentioned each perforation as far as possible, and it should be noted that make insulator perforation cut to ensure the first connecting plate 551 and the
Two connecting plates 552 can be respectively mounted fixing on each piece.
The concrete structure of quiet side shield gold utensil is similar with the concrete structure of dynamic side shield gold utensil 5, differs only in quiet side screen
Cover do not offer the connecting rod for operating mechanism on gold utensil and pass the perforation of operating mechanism connecting rod, pass for the wire on outlet board
Outlet board perforation and the earthed switch contact perforation passed for moving contact of grounding switch.Certainly, pacify on the assembly of quiet side at needs
In the case of dress outlet board, also should offer the outlet board perforation passed for the wire on outlet board on quiet side shield gold utensil；
In the case of needing, on the assembly of quiet side, static contact of grounding switch is installed, also should offer on quiet side shield gold utensil and open for ground connection
Close the earthed switch contact perforation that static contact passes.
Dynamic side shield gold utensil and quiet side shield gold utensil are all the shielding gold utensils of indication of the present invention.
In other embodiments: when shield gold utensil volume not by manufacture and transport installation limited time, gold utensil body is also
Globulate can be done and optimize shielding gold utensil internal electric field distribution with further.
The embodiment of shielding gold utensil:
Shielding gold utensil refers to side shield gold utensil or quiet side shield gold utensil, the concrete structure of shielding gold utensil and the embodiment of disconnecting switch
In the concrete structure of dynamic side shield gold utensil/quiet side shield gold utensil identical, specifically refer to Fig. 1 to Fig. 8, be not described in detail in this.
Claims (10)
1. shielding gold utensil, it is characterised in that: include that all round closure, middle part have the gold utensil body of cavity, gold utensil body is offered
There is the end for corresponding part by stretch into the perforation in described cavity, in the aperture Yan Chu of perforation on the inwall of gold utensil body
It is provided with arc to turn edge.
Shielding gold utensil the most according to claim 1, it is characterised in that: described arc turns edge with the aperture bored a hole along smoothed
Cross.
Shielding gold utensil the most according to claim 2, it is characterised in that: described gold utensil body includes spherical crown and the bottom on top
Be connected smoothly with described spherical crown and horizontally extending plane.
4. according to the shielding gold utensil described in claim 1 or 2 or 3, it is characterised in that: the support fixed above that described arc turns edge
There is the attachment structure for being connected with corresponding part.
5. disconnecting switch, including spaced quiet side assembly and dynamic side assembly, quiet side assembly include quiet lateral brace insulator and
The quiet upper lateral part conductor being arranged on the top flange dish of quiet lateral brace insulator, dynamic side assembly include dynamic lateral brace insulator,
The dynamic upper lateral part conductor being arranged on the top flange dish of dynamic lateral brace insulator and moving contact, it is characterised in that: quiet lateral brace
It is provided with on the top flange dish of insulator on the top flange dish of quiet side shield gold utensil and/or dynamic lateral brace insulator and is provided with
Dynamic side shield gold utensil, dynamic and static side shield gold utensil all includes the gold utensil body of all round closure, and the middle part of gold utensil body has can be by phase
Answering lateral brace insulator upper flanges dish and the cavity of the complete envelope of upper conductor, gold utensil body is provided with for corresponding lateral brace exhausted
The upper flanges dish of edge is through to stretch into the insulator perforation in described cavity and the moving contact perforation passed for moving contact, gold
The aperture Yan Chu bored a hole in insulator perforation and moving contact on the inwall of tool body is provided with arc and turns edge；The gold of dynamic side shield gold utensil
The upper end for operating mechanism connecting rod it is additionally provided with through the operating mechanism connecting rod perforation to stretch in described cavity, dynamic side on tool body
The aperture Yan Chu bored a hole in operating mechanism connecting rod on the inwall of the gold utensil body of shielding gold utensil is provided with arc and turns edge.
Disconnecting switch the most according to claim 5, it is characterised in that: also set on the top flange dish of dynamic lateral brace insulator
It is equipped with leading-out terminal, the gold utensil body of corresponding earthquake side shield gold utensil is additionally provided with for the wire being connected on leading-out terminal by described sky
The wire perforation passed in chamber, the aperture Yan Chu that the inwall of gold utensil body is bored a hole in wire is provided with arc and turns edge.
Disconnecting switch the most according to claim 5, it is characterised in that: the gold utensil body of dynamic and static side shield gold utensil all includes
The spherical crown on top and being connected smoothly with described spherical crown and horizontally extending plane of bottom, on dynamic side shield gold utensil
Insulator perforation and operating mechanism connecting rod perforation be all opened in dynamic side shield gold utensil gold utensil body plane on, quiet side shield
In the plane of the gold utensil body that the insulator perforation on gold utensil is opened in quiet side shield gold utensil.
8. according to the disconnecting switch according to any one of claim 5 ~ 7, it is characterised in that: described disconnecting switch is dynamic lateral brace
The isolation earthing switch of static contact of grounding switch, phase it is provided with on the top flange dish of insulator and/or quiet lateral brace insulator
Answer and be additionally provided with on the gold utensil body of earthquake side shield gold utensil and/or quiet side shield gold utensil for static contact of grounding switch through to stretch into
Static contact of grounding switch perforation in described cavity, in the aperture Yan Chu of static contact of grounding switch perforation on the inwall of gold utensil body
It is provided with arc to turn edge.
9. according to the disconnecting switch according to any one of claim 5 ~ 7, it is characterised in that: bore a hole in insulator on gold utensil body
Arc at opening's edge is fixedly installed the insulator flange for being connected with the ring flange on respective strut insulator even on turning edge
Access node structure.
Disconnecting switch the most according to claim 9, it is characterised in that: the arc at edge, insulator perforation aperture turns edge
Upper end is fixedly installed the first connecting plate, described insulator flange attachment structure include by that be intervally arranged in horizontal plane and on
The bolt support of lower extension is fixed on the second horizontally extending connecting plate above the first connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610706129.3A CN106229207B (en) | 2016-08-23 | 2016-08-23 | Shield fitting and the disconnecting switch using the shielding fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610706129.3A CN106229207B (en) | 2016-08-23 | 2016-08-23 | Shield fitting and the disconnecting switch using the shielding fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106229207A true CN106229207A (en) | 2016-12-14 |
| CN106229207B CN106229207B (en) | 2019-06-07 |
Family
ID=57553827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610706129.3A Active CN106229207B (en) | 2016-08-23 | 2016-08-23 | Shield fitting and the disconnecting switch using the shielding fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106229207B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108922820A (en) * | 2018-09-29 | 2018-11-30 | 湖南长高高压开关有限公司 | The extra-high-voltage isolated switch split type shielding case of large-scale suspension aperture and fastening method |
| CN110047689A (en) * | 2019-03-15 | 2019-07-23 | 平高集团有限公司 | A kind of grading shield and disconnecting switch |
| CN114388313A (en) * | 2021-12-24 | 2022-04-22 | 上海京硅智能技术有限公司 | Direct-acting circuit breaker |
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| CN202564114U (en) * | 2012-03-23 | 2012-11-28 | 平高集团有限公司 | Bypass isolation switch for 1100kV extra-high voltage series compensation |
| CN103219190A (en) * | 2013-04-09 | 2013-07-24 | 中国西电电气股份有限公司 | +/-1100kV high-voltage direct current disconnecting switch |
| CN104036979A (en) * | 2014-05-29 | 2014-09-10 | 国家电网公司 | Fixed contact assembly of valve hall and tubular bus and fixed contact connection fitting thereof |
| CN204732301U (en) * | 2015-06-26 | 2015-10-28 | 中国西电电气股份有限公司 | A kind of extra-high voltage direct-current isolating switch |
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2016
- 2016-08-23 CN CN201610706129.3A patent/CN106229207B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202564114U (en) * | 2012-03-23 | 2012-11-28 | 平高集团有限公司 | Bypass isolation switch for 1100kV extra-high voltage series compensation |
| CN103219190A (en) * | 2013-04-09 | 2013-07-24 | 中国西电电气股份有限公司 | +/-1100kV high-voltage direct current disconnecting switch |
| CN104036979A (en) * | 2014-05-29 | 2014-09-10 | 国家电网公司 | Fixed contact assembly of valve hall and tubular bus and fixed contact connection fitting thereof |
| CN204732301U (en) * | 2015-06-26 | 2015-10-28 | 中国西电电气股份有限公司 | A kind of extra-high voltage direct-current isolating switch |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108922820A (en) * | 2018-09-29 | 2018-11-30 | 湖南长高高压开关有限公司 | The extra-high-voltage isolated switch split type shielding case of large-scale suspension aperture and fastening method |
| CN108922820B (en) * | 2018-09-29 | 2023-07-21 | 湖南长高高压开关有限公司 | Large-scale suspension open-pore split type shielding cover for extra-high voltage isolating switch and buckling method |
| CN110047689A (en) * | 2019-03-15 | 2019-07-23 | 平高集团有限公司 | A kind of grading shield and disconnecting switch |
| CN114388313A (en) * | 2021-12-24 | 2022-04-22 | 上海京硅智能技术有限公司 | Direct-acting circuit breaker |
| CN114388313B (en) * | 2021-12-24 | 2024-03-12 | 上海京硅智能技术有限公司 | Direct-acting breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106229207B (en) | 2019-06-07 |
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