CN101834088A - Vacuum arc-extinguishing device for ultrahigh-voltage isolation - Google Patents
Vacuum arc-extinguishing device for ultrahigh-voltage isolation Download PDFInfo
- Publication number
- CN101834088A CN101834088A CN201010177197A CN201010177197A CN101834088A CN 101834088 A CN101834088 A CN 101834088A CN 201010177197 A CN201010177197 A CN 201010177197A CN 201010177197 A CN201010177197 A CN 201010177197A CN 101834088 A CN101834088 A CN 101834088A
- Authority
- CN
- China
- Prior art keywords
- cabinet
- arc
- fixed
- plate
- rotating shaft
- 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
Links
Images
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a vacuum arc-extinguishing device for ultrahigh-voltage isolation, which comprises a power part, an energy-storing unit, an executing part and an arc-extinguishing part. In the invention, a movable conductive rod of an isolating switch is used as a power source, and an arc-extinguishing chamber is opened or closed by a shifting fork-driving mechanism. When the isolating switch is switched on, the arc-extinguishing device is firstly switched on and bears a switching-on transfer current before contacting with a main contact. When the isolating switch is switched off, the main contact of the isolating switch is firstly switched off, and the arc-extinguishing device temporarily conducts the current and finally switches off to take the arc-extinguishing action. The invention solves the circumfluence and arc-extinguishing problems by the series compensation of a switching bus of the parallel-connected ultrahigh-voltage isolating switch and has the advantages of reasonable structure, reliable transmission, convenient operation and good arc-extinguishing performance.
Description
Technical field
The present invention relates to the employed vacuum arc-extinguishing device of a kind of superhigh pressure isolating switch.
Background technology
To the double-bus current supply circuit, because bus costs an arm and a leg, the general series compensation parallel-connection isolation switch of directly using is as the double-bus change over switch, for the following current supply circuit of 500kV, because the relative electrical potential difference of bus is little, adopt the isolation arcing contact of conventional design just can satisfy isolating switch deciliter requirement, but for the 1100kV current supply circuit, because electric pressure height, during isolator operation, the relative electrical potential difference of bus big (the given parameter electrical potential difference of national grid is 6kV, and transfer current is 6300A), during isolator operation, because of not possessing connecting-disconnecting function, can't eliminate electric arc, make contact burning serious, the switching between superhigh pressure isolating switch bus can't be used for, the requirement of superhigh pressure isolating switch in special use occasion can not be satisfied.
Summary of the invention
For solve the problem that the superhigh pressure isolating switch exists when operating, the invention provides a kind of vacuum arc-extinguishing device for ultrahigh-voltage isolation, the technical scheme that it adopted is:
This device comprises the vacuum interrupter that is encapsulated in the insulating cover, be separately fixed at the moved end flange and the quiet end flanges of insulating cover top and bottom, be fixed on the chassis backplane on the quiet end flanges, from left to right be fixed on the cabinet left plate on the chassis backplane successively, cabinet clamping plate and cabinet right plate, right-hand member is erected on the cabinet clamping plate and left end passes the rotating shaft I of cabinet left plate, two ends, the left and right sides are erected at the rotating shaft II on cabinet clamping plate and the cabinet right plate respectively, and the shift fork that is fixed on rotating shaft I left end, offer on the cabinet clamping plate with the axial plane of rotating shaft I is the following arc groove hole in the center of circle, be equipped with pivot pin I on the following arc groove hole, be provided with connecting lever I between cabinet left plate and the cabinet clamping plate, core bar and the energy accumulation spring that is socketed on the core bar, wherein the upper end of connecting lever I is fixed on the rotating shaft I, the left end of the lower end socket pivot pin I of connecting lever I, the upper end of core bar is fixed on the pivot pin, chassis backplane is passed in the lower end of core bar, energy accumulation spring is connected between the bar edge and chassis backplane of core bar, offer the vertical slot hole respectively on cabinet clamping plate and the corresponding position of cabinet right plate, be provided with rotating disk between cabinet clamping plate and the cabinet right plate, connecting lever II, connecting plate, transverse axis, sluice separating spring, stage clip, guide rod, cross bar I and cross bar II, wherein the two ends of transverse axis are located on the vertical slot hole, the two ends up and down of sluice separating spring are socketed in respectively on rotating shaft II and the transverse axis, the upper end of connecting lever II is fixed on the rotating shaft II, the lower end of connecting lever II is hinged by the upper end of pivot pin II and connecting plate, the lower end of connecting plate is socketed on the transverse axis, the upper end of guide rod is fixed on the transverse axis, the upper end of arc control device moving contact is passed the moved end flange and is fixedlyed connected with the lower end of guide rod, the stage clip that is socketed on the guide rod is connected between transverse axis and the moved end flange, rotating disk is fixed on the rotating shaft II, have position and the corresponding breach of following arc groove hole on the dish edge of rotating disk, make the right-hand member of pivot pin I be positioned at the breach of rotating disk, the two ends of corresponding cross bar I in position and cross bar II are separately fixed on cabinet clamping plate and the cabinet right plate, be fixed with corresponding locating piece I in position and positioning block II on cross bar I and the cross bar II respectively, but locating piece I and positioning block II crimping pivot pin II.
This device adopts vacuum to be applied on the superhigh pressure isolating switch as the blow-out media, vacuum interrupter is installed on the series compensation parallel-connection extra-high-voltage isolated switch, be installed in and isolate between arcing contact and the isolation fixed contact, connect prior to the isolated switch main contact, the back disconnects in the isolated switch main contact, after isolated switch main contact closure, do not bear through-flow task, arc extinguishing function as main conductive circuit, the circulation that produces in the time of bearing the isolating switch transfer bus, electric arc will be eliminated by arc control device, isolate the ablation that arcing contact has been avoided electric arc, can help isolating switch to be applied to special occasions.This device provides operational power by the high voltage isolator moving conductive rod, and not having additionally provides power source, and operating mechanism adopts two shift fork structures as mechanism and isolating switch interface, and sleeve mechanism without semi-axle shackle designs all adopted the dead point locate mode.
The invention solves a series compensation parallel-connection extra-high-voltage isolated switch switching bus circulating arc-suppression difficult problem, alternative expensive extra high voltage circuit breaker can significantly promote the extra-high-voltage isolated switch range of application, has avoided the configuration of unnecessary breaker in extra high voltage, can save great amount of cost, avoid the fund waste.That the present invention has is rational in infrastructure, reliable transmission, easy to operate, characteristics that arc extinction performance is good.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the B-B cutaway view of Fig. 1 when the separating brake position;
Fig. 3 is the B-B cutaway view of Fig. 1 when the centre position;
Fig. 4 is the B-B cutaway view of Fig. 1 when closing position;
Fig. 5 is Fig. 1 operates shift fork when the separating brake position an A-A cutaway view;
Fig. 6 is Fig. 1 operates shift fork when the centre position an A-A cutaway view;
Fig. 7 is Fig. 1 operates shift fork when closing position an A-A cutaway view;
Fig. 8 is the scheme of installation of the present invention on the superhigh pressure isolating switch.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further:
As depicted in figs. 1 and 2, vacuum interrupter 14 is encapsulated in the insulating cover 15, be provided with arc control device moving contact 20 and arc control device fixed contact 21 in the vacuum interrupter 14, moved end flange 23 and quiet end flanges 22 are separately fixed at insulating cover 15 tops and bottom, chassis backplane 26 is fixed on the quiet end flanges 22, cabinet left plate 24, cabinet clamping plate 18 and cabinet right plate 25 from left to right are fixed on the chassis backplane 26 successively, the right-hand member of rotating shaft I2 is erected on the cabinet clamping plate 18, and left end passes fixedly shift fork 1 of cabinet left plate 24, the two ends, the left and right sides of rotating shaft II7 are erected at respectively on cabinet clamping plate 18 and the cabinet right plate 25, when isolate moving conductive rod divide fashionable, the upper arm and the underarm that promote shift fork 1 respectively rotate, thereby rotating shaft I2 is rotated in certain angle.Offer on the cabinet clamping plate 18 with the axial plane of rotating shaft I2 is the following arc groove hole 27 in the center of circle, be equipped with pivot pin I4 on the following arc groove hole 27, be provided with connecting lever I3 between cabinet left plate 24 and the cabinet clamping plate 18, core bar 28 and the energy accumulation spring 5 that is socketed on the core bar 28, wherein the upper end of connecting lever I3 is fixed on the rotating shaft I2, the left end of the lower end socket pivot pin I4 of connecting lever I3, the upper end of core bar 28 is fixed on the pivot pin 4, chassis backplane 26 is passed in the lower end of core bar 28, energy accumulation spring 5 is connected between the bar edge and chassis backplane 26 of core bar 28, energy accumulation spring 5 can move up and down by inner core bar 28, on both forward and reverse directions,, realize the storage of energy by the dead-centre position, discharge.Offer vertical slot hole 29 respectively on cabinet clamping plate 18 and the cabinet right plate 25 corresponding positions, be provided with rotating disk 6 between cabinet clamping plate 18 and the cabinet right plate 25, connecting lever II8, connecting plate 9, transverse axis 11, sluice separating spring 12, stage clip 13, guide rod 19, cross bar I30 and cross bar II31, wherein the two ends of transverse axis 11 are located on the vertical slot hole 29, the two ends up and down of sluice separating spring 12 are socketed in respectively on rotating shaft II7 and the transverse axis 11, the upper end of connecting lever II8 is fixed on the rotating shaft II7, the lower end of connecting lever II8 is hinged by the upper end of pivot pin II10 and connecting plate 9, the lower end of connecting plate 9 is socketed on the transverse axis 11, the upper end of guide rod 19 is fixed on the transverse axis 11, the upper end of arc control device moving contact 20 is passed moved end flange 23 and is fixedlyed connected with the lower end of guide rod 19, move up and down by guide rod 19, and then drive vacuum interrupter 14) realize dynamic/static contact deciliter.The stage clip 13 that is socketed on the guide rod 19 is connected between transverse axis 11 and the moved end flange 23, rotating disk 6 is fixed on the rotating shaft II7, have position and following arc groove hole 27 corresponding breach on the dish edge of rotating disk 6, make the right-hand member of pivot pin I4 be positioned at the breach of rotating disk 6, but stir rotating disk 6 rotations on the pivot pin I4 both forward and reverse directions.The two ends of corresponding cross bar I30 in position and cross bar II31 are separately fixed on cabinet clamping plate 18 and the cabinet right plate 25, be fixed with corresponding locating piece I16 in position and positioning block II 17 on cross bar I30 and the cross bar II31 respectively, but locating piece I16 and positioning block II 17 crimping are by pivot pin II10, by limiting pivot pin II10 position, limit arc-control device on/off switch position.
As shown in Figure 8, this vacuum arc-extinguishing device B is installed in and isolates between fixed contact A and the isolation arcing contact C, arc control device fixed contact 21 is fixedly installed togather with isolating fixed contact A by quiet end flanges 22, isolates arcing contact C and links together by busbar and arc control device moved end flange 23 and arc control device moving contact 20.Isolation arcing contact C is supported on to isolate on the fixed contact bearing by insulating part and insulate with isolation fixed contact A.
Isolate in the making process: this moment arc-control device B) at gate-dividing state, isolating switch moving conductive rod D at first contacts and isolates arcing contact C, and the maintenance reliable electrical contact of on arcing contact, sliding, promote shift fork 1 simultaneously and finish arc-control device B combined floodgate, after isolating moving conductive rod D, isolating fixed contact A contact,, finish isolating switch moving conductive rod D and fixed contact and compress the pass and close at last by rotary manipulation, in operating process, make to isolate moving conductive rod and isolate the arcing contact disengaging to electrically contact simultaneously.
The feed motion conducting process: electric current is being isolated fixed contact A-vacuum arc-extinguishing device B-isolation arcing contact C-isolation moving conductive rod D conducting, at last for isolating fixed contact-isolation moving conductive rod, vacuum arc-extinguishing device closes at isolating switch and closes in the process, bears electric arc and closes the task of closing.
Isolate in the separating brake process: this moment, arc-control device B was in "on" position, isolate the moving conductive rod rotation and isolate the arcing contact disengaging, electrically contact with the isolation arcing contact simultaneously, electric current is being isolated fixed contact A-vacuum arc-extinguishing device B-isolation arcing contact C-isolation moving conductive rod D conducting, isolating switch moving conductive rod D slides on arcing contact and keeps reliable electrical contact, promote shift fork 1 simultaneously and finish arc-control device B separating brake, the loop disconnects.Vacuum arc-extinguishing device divides in the process at isolating switch, bears electric arc disjunction task.
It is specific as follows that this isolates arc-control device divide-shut brake process:
(1) isolating arc-control device making process sequence of movement is:
Separating brake position---→ centre position (position, dead point)---→ closing position;
Feed motion process such as Fig. 2 specifically describe as follows to shown in Figure 7:
Initial condition: the underarm 33 of shift fork 1 is from the horizontal by 30 ° of angles, and connecting lever 8 is in vertical direction with 32 ° of angles.
1. energy storage stage
The isolating switch moving conductive rod direction of motion is shown in arrow among Fig. 5-Fig. 7, the underarm 33 that the isolating switch moving conductive rod promotes shift fork 1 moves downward, shift fork 1 is rotated counterclockwise, connecting lever 3 rotates simultaneously, and then drive pivot pin I4 along arc groove hole 27 down from top-left position to upper/lower positions move, energy accumulation spring 5 is compressed energy storage when not crossing dead-centre position (as Fig. 5), this moment, the right-hand member of pivot pin I4 moved in the breach of rotating disk 6, both be positioned at the idle stroke interval, this moment, rotating disk 6 can not be struck, and rotating shaft II7 does not move yet.
When shift fork 1 rotated counterclockwise 60 °, energy accumulation spring 5 was crossed the dead point, and energy discharges.
2. close a floodgate the stage fast:
(as Fig. 6) energy discharges energy accumulation spring 5 in the dead-centre position, this moment, pivot pin I4 contacted (as Fig. 3) with the right hand edge of rotating disk 6 breach, promoting rotating disk 6 is rotated counterclockwise, and then drive rotating shaft II7 quick rotation, bearing pin II10 is because the effect of locating piece I16, the connecting lever 8 and the 9 mechanism urges transverse axis of forming 11 of winning in succession of winning in succession move downward along vertical slot hole 29, thereby promoting arc control device moving contact 20 by guide rod 19 moves downward, realization contacts with arc control device fixed contact 21, sluice separating spring 12 stretchings this moment, stage clip 13 is compressed, and the mechanism that wins in succession crosses dead point rear pin shaft II10 and maintains closing position (as Fig. 5) by locating piece 17.The energy accumulation spring 5 of this moment reaches closing position (as Fig. 7), and elastic potential energy discharges and finishes.
The combined floodgate state of termination: shift fork 1 becomes-30 ° of angles with horizontal line, connecting lever 8 is in vertical direction with-17 ° of angles.
Because the elastic potential energy that energy accumulation spring 5 stores is very big, and finish in abrupt release, the movement velocity of arc control device moving contact is all very high, and blow-out circuit can be prior to isolating the major loop conducting, and the electric arc that the electrical potential difference between isolation sound guide rod causes will close by vacuum interrupter and close.
(2) isolate arc-control device separating brake process:
Closing position---→ centre position (position, dead point)---→ separating brake position.
1 energy storage stage
The upper arm 32 that the isolating switch moving conductive rod promotes shift fork 1 moves upward, and shift fork 1 is clockwise rotated, and energy accumulation spring 5 is not compressed energy storage when crossing the dead-centre position, and pivot pin I4 moves in the idle stroke interval of rotating disk 6, and rotating shaft this moment II7 does not move.
When shift fork 1 clockwise rotated 60 °, energy-stored spring was crossed the dead point, and energy discharges.
2. quick acting switching-off stage:
In whole course of action, isolate main contact and at first separate, the vacuum extinction loop disconnects after temporarily bearing of short duration through-flow task, and circulation will be eliminated by arc-control device, and originally isolating the arcing contact burning phenomenon will be avoided.
Claims (1)
1. vacuum arc-extinguishing device for ultrahigh-voltage isolation, comprise the vacuum interrupter (14) that is encapsulated in the insulating cover (15), be separately fixed at the moved end flange (23) and the quiet end flanges (22) of insulating cover (15) top and bottom, be fixed on the chassis backplane (26) on the quiet end flanges (22), from left to right be fixed on the cabinet left plate (24) on the chassis backplane (26) successively, cabinet clamping plate (18) and cabinet right plate (25), right-hand member is erected at that cabinet clamping plate (18) are gone up and left end passes the rotating shaft I (2) of cabinet left plate (24), two ends, the left and right sides are erected at the rotating shaft II (7) on cabinet clamping plate (18) and the cabinet right plate (25) respectively, and the shift fork (1) that is fixed on rotating shaft I (2) left end, it is characterized in that: offering on the cabinet clamping plate (18) with the axial plane of rotating shaft I (2) is the following arc groove hole (27) in the center of circle, be equipped with pivot pin I (4) on the following arc groove hole (27), be provided with connecting lever I (3) between cabinet left plate (24) and the cabinet clamping plate (18), core bar (28) and be socketed in energy accumulation spring (5) on the core bar (28), wherein the upper end of connecting lever I (3) is fixed on the rotating shaft I (2), the left end of the lower end socket pivot pin I (4) of connecting lever I (3), the upper end of core bar (28) is fixed on the pivot pin (4), chassis backplane (26) is passed in the lower end of core bar (28), energy accumulation spring (5) is connected between the bar edge and chassis backplane (26) of core bar (28), offer vertical slot hole (29) respectively on cabinet clamping plate (18) and the corresponding position of cabinet right plate (25), be provided with rotating disk (6) between cabinet clamping plate (18) and the cabinet right plate (25), connecting lever II (8), connecting plate (9), transverse axis (11), sluice separating spring (12), stage clip (13), guide rod (19), cross bar I (30) and cross bar II (31), wherein the two ends of transverse axis (11) are located on the vertical slot hole (29), the two ends up and down of sluice separating spring (12) are socketed in respectively on rotating shaft II (7) and the transverse axis (11), the upper end of connecting lever II (8) is fixed on the rotating shaft II (7), the lower end of connecting lever II (8) is hinged with the upper end of connecting plate (9) by pivot pin II (10), the lower end of connecting plate (9) is socketed on the transverse axis (11), the upper end of guide rod (19) is fixed on the transverse axis (11), the upper end of arc control device moving contact (20) is passed moved end flange (23) and is fixedlyed connected with the lower end of guide rod (19), the stage clip (13) that is socketed on the guide rod (19) is connected between transverse axis (11) and the moved end flange (23), rotating disk (6) is fixed on the rotating shaft II (7), have position and the corresponding breach of following arc groove hole (27) on the dish edge of rotating disk (6), make the right-hand member of pivot pin I (4) be positioned at the breach of rotating disk (6), the two ends of corresponding cross bar I in position (30) and cross bar II (31) are separately fixed on cabinet clamping plate (18) and the cabinet right plate (25), be fixed with corresponding locating piece I in position (16) and positioning block II (17) on cross bar I (30) and the cross bar II (31) respectively, locating piece I (16) and positioning block II (17) but crimping pivot pin II (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101771978A CN101834088B (en) | 2010-05-12 | 2010-05-12 | Vacuum arc-extinguishing device for ultrahigh-voltage isolation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101771978A CN101834088B (en) | 2010-05-12 | 2010-05-12 | Vacuum arc-extinguishing device for ultrahigh-voltage isolation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101834088A true CN101834088A (en) | 2010-09-15 |
| CN101834088B CN101834088B (en) | 2012-07-04 |
Family
ID=42718122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101771978A Expired - Fee Related CN101834088B (en) | 2010-05-12 | 2010-05-12 | Vacuum arc-extinguishing device for ultrahigh-voltage isolation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101834088B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074410A (en) * | 2011-02-18 | 2011-05-25 | 许昌永新电器设备有限公司 | One-phase vacuum circuit breaker with low operation power |
| CN109786172A (en) * | 2019-02-19 | 2019-05-21 | 宁波天安智能电网科技股份有限公司 | A kind of built-in vacuum interrupter component and vacuum circuit breaker being isolated |
| CN115603217A (en) * | 2022-12-12 | 2023-01-13 | 石家庄科林电气设备有限公司（Cn） | Load switch and environment-friendly gas-insulated combined electrical appliance ring main unit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR462893A (en) * | 1912-10-15 | 1914-02-07 | Elektrochemische Werke Gmbh | Process for making pure ethane from ethylene and hydrogen using catalysts |
| JPS5772527U (en) * | 1980-10-21 | 1982-05-04 | ||
| CN2651924Y (en) * | 2003-09-29 | 2004-10-27 | 深圳市光辉电器实业有限公司 | Vacuum loading switches |
| CN1992118A (en) * | 2005-12-30 | 2007-07-04 | 苑舜 | Plug-in docking integral vacuum arc-extinction chamber |
| CN201215783Y (en) * | 2008-06-11 | 2009-04-01 | 珠海康晋电气有限公司 | Novel vacuum loaded switch |
| CN201717184U (en) * | 2010-05-12 | 2011-01-19 | 山东泰开真空开关有限公司 | Vacuum arc extinction device for ultrahigh voltage isolation |
-
2010
- 2010-05-12 CN CN2010101771978A patent/CN101834088B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074410A (en) * | 2011-02-18 | 2011-05-25 | 许昌永新电器设备有限公司 | One-phase vacuum circuit breaker with low operation power |
| CN109786172A (en) * | 2019-02-19 | 2019-05-21 | 宁波天安智能电网科技股份有限公司 | A kind of built-in vacuum interrupter component and vacuum circuit breaker being isolated |
| CN109786172B (en) * | 2019-02-19 | 2023-09-05 | 宁波天安智能电网科技股份有限公司 | Built-in isolated vacuum arc-extinguishing chamber component and vacuum circuit breaker |
| CN115603217A (en) * | 2022-12-12 | 2023-01-13 | 石家庄科林电气设备有限公司（Cn） | Load switch and environment-friendly gas-insulated combined electrical appliance ring main unit |
| CN115603217B (en) * | 2022-12-12 | 2023-03-24 | 石家庄科林电气设备有限公司 | Load switch and environment-friendly gas-insulated combined electrical appliance ring main unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101834088B (en) | 2012-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201673845U (en) | High-current outdoor isolating switch | |
| CN101834088B (en) | Vacuum arc-extinguishing device for ultrahigh-voltage isolation | |
| CN201717184U (en) | Vacuum arc extinction device for ultrahigh voltage isolation | |
| CN102426975A (en) | Permanent magnetic operation mechanism | |
| CN202443906U (en) | Quick permanent-magnetic double-power selector switch used in low-voltage distribution environment | |
| CN202736828U (en) | Indoor AC high-voltage vacuum circuit breaker | |
| CN112259407B (en) | Three-phase linkage on-off transmission retaining device of high-voltage rapid vacuum switch and working method | |
| CN102254732B (en) | High voltage source fast switch over method and high-speed switched high-voltage switch | |
| CN101651058B (en) | Vacuum insulating phase-change switch circuit | |
| CN110600316B (en) | Three-column horizontal on-off type isolating switch | |
| CN201549431U (en) | Electric vacuum isolation phase-change switch | |
| CN211654684U (en) | Double-acting coupling type contact switch with variable electrode shape | |
| CN110783139A (en) | Coupling type contact switch with variable electrode shape and method | |
| CN1171261C (en) | Long-service silver-saving switch appliance with arc transfer contact | |
| CN102426946B (en) | Auxiliary contact structure for low-voltage electrical appliance | |
| CN218215124U (en) | High-tolerance dual-function composite isolation vacuum circuit breaker | |
| CN212322899U (en) | Synchronous linked fast switch | |
| CN219759454U (en) | Driving mechanism of high-voltage vacuum circuit breaker | |
| CN212322900U (en) | Lever type synchronous linkage quick switch | |
| CN202307670U (en) | Vacuum load disconnecting switch | |
| CN218215122U (en) | Switch mechanism and switch cabinet | |
| CN201590371U (en) | Quick ground switch device | |
| CN101651059B (en) | Electric vacuum isolated phase change switch | |
| CN207947207U (en) | A kind of breaker | |
| CN2836218Y (en) | High-voltage AC vacuum breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cui Xiandai Inventor after: Qin Chengwei Inventor after: Sun Yuanhai Inventor after: Fu Mingming Inventor before: Sun Yuanhai Inventor before: Fu Mingming Inventor before: Qin Chengwei |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: SUN YUANHAI FU MINGMING QIN CHENGWEI TO: CUI XIANDAI QIN CHENGWEI SUN YUANHAI FU MINGMING |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20130512 |