CN106252150A - A kind of high-pressure vacuum breaker - Google Patents
A kind of high-pressure vacuum breaker Download PDFInfo
- Publication number
- CN106252150A CN106252150A CN201610716825.2A CN201610716825A CN106252150A CN 106252150 A CN106252150 A CN 106252150A CN 201610716825 A CN201610716825 A CN 201610716825A CN 106252150 A CN106252150 A CN 106252150A
- Authority
- CN
- China
- Prior art keywords
- vacuum interrupter
- cylinder
- vacuum
- feeler lever
- contact
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention discloses a kind of high-pressure vacuum breaker, including cylinder and cover plate, vacuum interrupter it is provided with in cylinder, fastening block is placed in the top of vacuum interrupter, on the outer circle wall of fastening block, hollow round table is installed, cylinder upper end inwall has the draw-in groove matched with hollow round table, vacuum interrupter is connected with fastening block, cylinder lower end inner wall is provided with a bracer, limiting plate is fixed on a bracer, lead and the push rod of inner hollow it is connected at vacuum interrupter two ends, in the upper end of push rod, ball is installed, ball upper surface and cover plate contact internal walls, through hole is had in the middle part of limiting plate, insulated tension pole upper end sequentially passes through through hole, after lead, the movable feeler lever with vacuum interrupter contacts.When breaking down, only need to open cover plate, utilize the clearance fit between hollow round table and draw-in groove, fixed block and vacuum interrupter can be taken out in the lump, abandon the installing/dismounting step that traditional chopper is complicated, greatly reduced the labor intensity of staff.
Description
Technical field
The present invention relates to vacuum circuit breaker technical field, specifically refer to a kind of high-pressure vacuum breaker.
Background technology
On a kind of high-pressure vacuum breaker of the prior art, vacuum interrupter is typically installed by upper bracket and lower carriage
In insulating sleeve.This mounting structure and mounting means, owing to the installation site of lower carriage self needs other parts to consolidate
Fixed so that vacuum interrupter is after being installed to insulating sleeve inside, and lower end is easily rocked, to whole a kind of high-pressure vacuum breaker
Normal work have a great impact, and the installation process operation of vacuum interrupter of the prior art is complex, occurs
During failure replacement complex, affect the work efficiency of a kind of high-pressure vacuum breaker.
Summary of the invention
It is an object of the invention to provide a kind of high-pressure vacuum breaker, it is to avoid vacuum interrupter shakes, and effectively carries
Fine vacuum arc-chutes mounting stability in cylinder.
The purpose of the present invention is achieved through the following technical solutions:
A kind of high-pressure vacuum breaker, including single injection-molded cylinder and with the cover plate of cylinder upper end threaded engagement,
Being provided with vacuum interrupter in described cylinder, circular fastening block is placed in the top of vacuum interrupter, and at the cylindrical of fastening block
Resilient hollow round table is installed on perisporium, cylinder upper end inwall has the draw-in groove matched with hollow round table, described very
Empty arc-chutes upper surface is connected with fastening block by bolt, and described cylinder lower end inner wall is provided with a bracer, and limiting plate is fixed on
Propping up on bracer, be connected to lead and the push rod of inner hollow at described vacuum interrupter two ends, institute's push rod runs through fastening
Upwardly extending after in the middle part of block, and be provided with ball in the upper end of push rod, described ball and described cover plate contact internal walls, in institute
Stating and have through hole in the middle part of limiting plate, insulated tension pole upper end is touched with the dynamic of vacuum interrupter after sequentially passing through described through hole, lead
Bar contacts, and described vacuum interrupter includes housing, is provided with radome, corrugated tube, coaxial stationary contact bar and movable feeler lever in housing,
Corrugated tube is fixed on inner walls lower end and is set in movable feeler lever epimere, after described movable feeler lever hypomere runs through vacuum interrupter lower end
Extending in described lead, radome is fixed on movable feeler lever, between stationary contact bar and inner walls, is provided with quiet in stationary contact bar lower end
Contact, is provided with the moving contact coordinated with static contact in movable feeler lever upper end, and static contact is the horizontal magnetic of helicla flute with moving contact, insulation
Pull bar upper end is connected with movable feeler lever after sequentially passing through described through hole, lead and vacuum interrupter lower end, at described moving contact
The middle part of upper surface has groove, is provided with the columnar protrusions with groove fit at the middle part of static contact lower surface.
During use, cover plate and cylinder upper end are threaded connection to realize the sealing on vacuum interrupter top, in cylinder
Portion is provided with a bracer, and limiting plate is fixed on a bracer, to realize the sealing to vacuum interrupter bottom, is i.e. ensureing that vacuum is gone out
On the premise of arc chamber normally works, reach the dust-proof grade of vacuum interrupter in cylinder.It is provided with fastening block in cylinder upper end simultaneously,
And on the outer circle wall of fastening block, set resilient hollow round table, the draw-in groove phase interworking that hollow round table and cylinder inboard wall start
Close, and push rod runs through the middle part of fastening block, is provided with and the ball of cover plate contact internal walls in push rod upper end, and vacuum extinction
The upper end of room is connected with fastening block, i.e. utilizes mutually supporting between ball with cover plate to contact so that vacuum interrupter upper
Portion is stably fixed；And in the middle part of cylinder, the limiting plate on a bracer provides for vacuum interrupter and supports, and then ensure that vacuum is gone out
The entirety of arc chamber in cylinder by stable holding, it is to avoid vacuum interrupter shakes, and is effectively improved vacuum interrupter at cylinder
Interior mounting stability.Wherein, break down need to change vacuum interrupter time, only need to open cover plate, utilize hollow round table
And the clearance fit between draw-in groove, can take out in the lump by fixed block and vacuum interrupter, abandon traditional chopper complicated
Installing/dismounting step, greatly reduce the labor intensity of staff.
Further, the selection horizontal magnetic of helicla flute, can be when disjunction short circuit current as moving contact, static contact, can be at its electricity
Interpolar results from the magnetic field of electrode axis perpendicular, and under the effect of enough transverse magnetic fields, vacuum arc is along the surface of contact
Constantly high-speed motion, and then avoid the serious thawing of contact surface, after current over-zero can convalescent period dielectric strength rapidly,
While being conducive to arc extinction, greatly reduce the loss to moving contact and static contact, reduce to vacuum interrupter more
Change frequency, and extend the service life of chopper.Further, during using for a long time, moving contact and static contact exist
Constantly during disjunction short circuit current, both contact site branches engender loss, i.e. in moving contact or the contact of static contact
Depression occurs on end face, and then makes after arc extinction, between moving contact and static contact, loose contact occurs, to cause line
There is breaking phenomena in road, and inventor offers groove in moving contact upper surface, and arranges in static contact lower surface and groove fit
Columnar protrusions, and the axial length of this columnar protrusions is in the range of 6 ~ 8, is not affecting moving contact and static contact disjunction short circuit electricity
On the premise of stream, it is ensured that possess enough contacts area between moving contact and static contact all the time, to ensure the unobstructed of whole circuit.
Wherein, indoor in vacuum extinction, corrugated tube i.e. can guarantee that fully sealing within vacuum interrupter, again can be outdoor in vacuum extinction
Moving contact and static contact is made to do a deciliter motion during portion's actuating, and when electric arc produces, moving contact when radome can adsorb arcing
And the metallic vapour of evaporation on static contact, prevent the pollution of housing endogenous cause of ill metallic vapour from causing dielectric strength to reduce and insulation
Destroying, and beneficially the rapid of blow-out penetrating arc gap dielectric strength recovers, similarly, indoor in vacuum extinction, radome will
Corrugated tube covers, it is possible to reduces the corrugated tube scaling loss degree by metallic vapour, and then increases the service life of vacuum interrupter.
The sidewall of described cylinder is respectively equipped with upper end wire outlet seat and lower end wire outlet seat.Arrange upper end occur seat with under
End wire outlet seat can facilitate and the indoor stationary contact bar of vacuum extinction, movable feeler lever are carried out wire connection, simultaneously upper end wire outlet seat and under
Using the wire outlet seat that classification of waterproof is higher on end wire outlet seat, and then improve inner barrel, particularly vacuum extinction indoor is waterproof
Dust-proof effect.
The inwall of described cylinder is provided with elastic sheet metal, and the end of described elastic sheet metal and insulated tension pole is upper
End connects.When moving contact in vacuum interrupter separates with static contact, movable feeler lever can drive insulated tension pole to move down, and works as vacuum electric
Arc disappear time, the back-moving spring on elastic sheet metal coordinated insulation pull bar together to insulated tension pole and movable feeler lever generation effect,
Make insulated tension pole and movable feeler lever Rapid reset.
The present invention compared with prior art, has such advantages as and beneficial effect:
1, the present invention break down need to change vacuum interrupter time, only need to open cover plate, utilize hollow round table and draw-in groove it
Between clearance fit, fixed block and vacuum interrupter can be taken out in the lump, the installation having abandoned traditional chopper complicated is torn open
Unload step, greatly reduce the labor intensity of staff；
2, when present invention moving contact in vacuum interrupter separates with static contact, movable feeler lever can drive insulated tension pole to move down, when
When vacuum arc disappears, insulated tension pole and movable feeler lever are produced by back-moving spring on elastic sheet metal coordinated insulation pull bar together
Effect so that insulated tension pole and movable feeler lever Rapid reset；
3, the present invention has through hole at the middle part of ball so that vacuum interrupter moving contact separates with static contact or again connects
The applied stress produced when touching is when being transferred at cover plate, ball by self deformation and reply elastic force produced by deformation will
This applied stress eliminates, and makes ball have certain deformation space, to keep away in the middle part of it when compressed in offering of through hole
Exempt from the internal internal stress caused that mutually extrudes of ball to concentrate, reduce the extent of deterioration of ball, to reach to extend rubber
Ball service life and the purpose of reduction chopper frequency of maintenance.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes of the application
Point, it is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is present configuration schematic diagram；
Fig. 2 is the sectional view of vacuum interrupter；
Fig. 3 is the structural representation of static contact and moving contact.
Labelling and corresponding parts title in accompanying drawing:
1-cylinder, 2-vacuum interrupter, 21-stationary contact bar, 22-static contact, 23-moving contact, 24-movable feeler lever, 25-corrugated tube, 26-
Radome, 27-shell, 28-projection, 29-groove, 3-elastic sheet metal, 4-lead, 5-limiting plate, 6-prop up bracer, 7-insulation
Pull bar, 8-fastening block, 9-cover plate, 10-push rod, 11-ball, 12-upper end wire outlet seat, 13-lower end wire outlet seat.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, to this
Invention is described in further detail, and the exemplary embodiment of the present invention and explanation thereof are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
As shown in Fig. 1 ~ 3, the present embodiment include single injection-molded cylinder 1 and with the lid of cylinder 1 upper end threaded engagement
Plate 9, is provided with vacuum interrupter 2 in described cylinder 1, and circular fastening block 8 is placed in the top of vacuum interrupter 2, and in fastening
Resilient hollow round table is installed on the outer circle wall of block 8, cylinder 1 upper end inwall has the card matched with hollow round table
Groove, described vacuum interrupter 2 upper surface is connected with fastening block 8 by bolt, and described cylinder 1 lower end inner wall is provided with a bracer 6,
Limiting plate 5 is fixed on a bracer 6, is connected to lead 4 and the push rod of inner hollow at described vacuum interrupter 2 two ends
10, institute's push rod 10 upwardly extends after running through in the middle part of fastening block 8, and is provided with ball 11, described rubber in the upper end of push rod 10
Ball 11 and described cover plate 9 contact internal walls, have through hole in the middle part of described limiting plate 5, and insulated tension pole 7 upper end sequentially passes through described logical
After hole, lead 4, the movable feeler lever with vacuum interrupter 2 contacts, and described vacuum interrupter 2 includes housing 27, sets in housing 27
Having radome 26, corrugated tube 25, coaxial stationary contact bar 21 and movable feeler lever 24, corrugated tube 25 is fixed on housing 7 inwall lower end and set
Being located at movable feeler lever 24 epimere, described movable feeler lever 24 hypomere extends after running through vacuum interrupter 2 lower end in described lead 4, screen
Cover cover 26 to be fixed between movable feeler lever 23, stationary contact bar 22 and housing 27 inwall, be provided with static contact 22 in stationary contact bar 21 lower end, dynamic
Feeler lever 24 upper end is provided with the moving contact 23 coordinated with static contact 22, and static contact 22 is the horizontal magnetic of helicla flute, absolutely with moving contact 23
Edge pull bar 7 upper end is connected with movable feeler lever 24, described after sequentially passing through described through hole, lead 4 and vacuum interrupter 2 lower end
The middle part of moving contact 23 upper surface has groove 28, is provided with the column coordinated with groove 28 at the middle part of static contact 22 lower surface and dashes forward
Play 29.
During use, cover plate 9 and cylinder 1 upper end are threaded connection to realize the sealing on vacuum interrupter 2 top, at cylinder
Being provided with a bracer 6 in the middle part of in the of 1, limiting plate 5 is fixed on a bracer 6, to realize the sealing to vacuum interrupter 2 bottom, is i.e. protecting
Card is on the premise of vacuum interrupter 2 normally works, and reaches the dust-proof grade of vacuum interrupter 2 in cylinder 1.Simultaneously on cylinder 1
End is provided with fastening block 8, and sets resilient hollow round table on the outer circle wall of fastening block 8, and hollow round table is opened with cylinder 1 inwall
The draw-in groove begun cooperates, and push rod 10 runs through the middle part of fastening block 8, is provided with in push rod 10 upper end and connects with cover plate 9 inwall
The ball 11 touched, and the upper end of vacuum interrupter 2 is connected with fastening block 8, and i.e. utilize between ball 11 and cover plate 9 is mutual
Support contact so that the top of vacuum interrupter 2 is stably fixed；And in the middle part of cylinder 1, the limiting plate 5 on a bracer 6 is true
Empty arc-chutes 2 provide and support, so ensure the entirety of vacuum interrupter 2 in cylinder 1 by stable holding, it is to avoid vacuum interrupter
2 shake, and are effectively improved the vacuum interrupter 2 mounting stability in cylinder 1.Wherein, change true at the needs that break down
During empty arc-chutes 2, only need to open cover plate 9, utilize the clearance fit between hollow round table and draw-in groove, can be by fixed block and vacuum
Arc-chutes 2 take out in the lump, have abandoned the installing/dismounting step that traditional chopper is complicated, have greatly reduced the work of staff
Intensity.
Further, select the horizontal magnetic of helicla flute as moving contact 23, static contact 22, can be when disjunction short circuit current, can be
Resulting from the magnetic field of electrode axis perpendicular between its electrode, under the effect of enough transverse magnetic fields, vacuum arc is along contact
Surface constantly high-speed motion, and then avoid the serious thawing of contact surface, can convalescent period insulation rapidly after current over-zero
While intensity, beneficially arc extinction, greatly reduce moving contact 23 and the loss of static contact 22, reduce and vacuum is gone out
The replacement frequency of arc chamber, and extend the service life of chopper.Further, during using for a long time, moving contact 23 with
And static contact 22 is when constantly disjunction short circuit current, both contact site branches engender loss, i.e. at moving contact 23 or
It is that depression occurs on the contact end face of static contact 22, and then makes after arc extinction, between moving contact 23 and static contact 22
Loose contact occur, to cause circuit breaking phenomena occur, inventor offers groove 28 in moving contact 23 upper surface, and at stationary contact
22 lower surfaces arrange the columnar protrusions 29 coordinated with groove 28, and the axial length of this columnar protrusions 29 is in the range of 6 ~ 8,
On the premise of not affecting moving contact 23 and static contact 22 disjunction short circuit current, it is ensured that between moving contact 23 and static contact 22 all the time
Possess enough contacts area, to ensure the unobstructed of whole circuit.Wherein, in vacuum interrupter 2, corrugated tube 25 i.e. can guarantee that
Fully sealing within vacuum interrupter 2, can make moving contact 23 and static contact 22 divide when the outside actuating of vacuum interrupter 2 again
Resultant motion, and when electric arc produces, the metal of evaporation on moving contact 23 and static contact 22 when radome 26 can adsorb arcing
Steam, prevents the pollution of housing 27 endogenous cause of ill metallic vapour from causing dielectric strength to reduce and insulation breakdown, and beneficially blow-out
The rapid recovery of penetrating arc gap dielectric strength, similarly, in vacuum interrupter 2, corrugated tube 25 is covered by radome 27, it is possible to
Reduce the corrugated tube 25 scaling loss degree by metallic vapour, and then increase the service life of vacuum interrupter 2.
The sidewall of described cylinder 1 is respectively equipped with upper end wire outlet seat 12 and lower end wire outlet seat 13.The upper end arranged occurs
Seat can facilitate with lower end wire outlet seat 13 and the stationary contact bar in vacuum interrupter 2, movable feeler lever are carried out wire and be connected, and brings out upper simultaneously
Using the wire outlet seat that classification of waterproof is higher on line seat 12 and lower end wire outlet seat 13, and then it is internal to improve cylinder 1, particularly vacuum is gone out
Water proof and dust proof effect in arc chamber 2.
The inwall of described cylinder 1 is provided with elastic sheet metal 3, and the end of described elastic sheet metal 3 and insulated tension pole 7
Upper end connect.When moving contact in vacuum interrupter 2 separates with static contact, movable feeler lever can drive insulated tension pole 7 to move down, when
When vacuum arc disappears, the back-moving spring on elastic sheet metal 3 coordinated insulation pull bar 7 is together to insulated tension pole 7 and movable feeler lever
Generation effect so that insulated tension pole 7 and movable feeler lever Rapid reset.
Above-described detailed description of the invention, has been carried out the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, be it should be understood that the detailed description of the invention that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, all should comprise
Within protection scope of the present invention.
Claims (3)
1. a high-pressure vacuum breaker, including single injection-molded cylinder (1) and with cylinder (1) upper end threaded engagement
Cover plate (9), it is characterised in that: being provided with vacuum interrupter (2) in described cylinder (1), circular fastening block (8) is placed in vacuum
The top of arc-chutes (2), and resilient hollow round table is installed on the outer circle wall of fastening block (8), in cylinder (1) upper end
Having the draw-in groove matched with hollow round table on wall, described vacuum interrupter (2) upper surface is by bolt with fastening block (8) even
Connecing, described cylinder (1) lower end inner wall is provided with a bracer (6), and limiting plate (5) is fixed on a bracer (6), goes out in described vacuum
Arc chamber (2) two ends are connected to lead (4) and the push rod (10) of inner hollow, and described push rod (10) runs through fastening block (8)
Upwardly extend after Zhong Bu, and ball (11) is installed in the upper end of push rod (10), described ball (11) and described cover plate (9)
Contact internal walls, has through hole at described limiting plate (5) middle part, and described vacuum interrupter (2) includes housing (27), in housing (27)
Inside being provided with radome (26), corrugated tube (25), coaxial stationary contact bar (21) and movable feeler lever (24), corrugated tube (25) is fixed on housing
(7) inwall lower end and be set in movable feeler lever (24) epimere, described movable feeler lever (24) hypomere run through behind vacuum interrupter (2) lower end
Extending in described lead (4), radome (26) is fixed between movable feeler lever (24), stationary contact bar (22) and housing (27) inwall,
It is provided with static contact (22) in stationary contact bar (21) lower end, is provided with the moving contact coordinated with static contact (22) in movable feeler lever (24) upper end
(23), and static contact (22) and moving contact (23) are the horizontal magnetic of helicla flute, insulated tension pole (7) upper end sequentially pass through described through hole,
It is connected with movable feeler lever (24) after lead (4) and vacuum interrupter (2) lower end, at the middle part of described moving contact (23) upper surface
Have groove (28), be provided with the columnar protrusions (29) coordinated with groove (28) at the middle part of static contact (22) lower surface.
A kind of high-pressure vacuum breaker the most according to claim 1, it is characterised in that: on the sidewall of described cylinder (1)
It is respectively equipped with upper end wire outlet seat (12) and lower end wire outlet seat (13).
A kind of high-pressure vacuum breaker the most according to claim 1, it is characterised in that: on the inwall of described cylinder (1)
It is provided with elastic sheet metal (3), and the end of described elastic sheet metal (3) is connected with the upper end of insulated tension pole (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610716825.2A CN106252150A (en) | 2016-08-25 | 2016-08-25 | A kind of high-pressure vacuum breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610716825.2A CN106252150A (en) | 2016-08-25 | 2016-08-25 | A kind of high-pressure vacuum breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106252150A true CN106252150A (en) | 2016-12-21 |
Family
ID=57596472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610716825.2A Pending CN106252150A (en) | 2016-08-25 | 2016-08-25 | A kind of high-pressure vacuum breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106252150A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2363072Y (en) * | 1998-10-23 | 2000-02-09 | 财团法人工业技术研究院 | Heat wax-melting cool starting valve |
| CN201440395U (en) * | 2009-07-03 | 2010-04-21 | 北京华东森源电气有限责任公司 | Vacuum arc extinguish chamber and main circuit structure using same |
| CN201667312U (en) * | 2010-01-20 | 2010-12-08 | 北京华东森源电气有限责任公司 | Solid-sealed pole structure of high-voltage vacuum circuit breaker |
| CN104183416A (en) * | 2014-09-12 | 2014-12-03 | 安徽鑫龙电器股份有限公司 | Vacuum circuit breaker |
| JP2016012418A (en) * | 2014-06-27 | 2016-01-21 | 三菱電機株式会社 | Vacuum valve |
| JP2016092871A (en) * | 2014-10-30 | 2016-05-23 | 株式会社日立製作所 | Switch gear |
-
2016
- 2016-08-25 CN CN201610716825.2A patent/CN106252150A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2363072Y (en) * | 1998-10-23 | 2000-02-09 | 财团法人工业技术研究院 | Heat wax-melting cool starting valve |
| CN201440395U (en) * | 2009-07-03 | 2010-04-21 | 北京华东森源电气有限责任公司 | Vacuum arc extinguish chamber and main circuit structure using same |
| CN201667312U (en) * | 2010-01-20 | 2010-12-08 | 北京华东森源电气有限责任公司 | Solid-sealed pole structure of high-voltage vacuum circuit breaker |
| JP2016012418A (en) * | 2014-06-27 | 2016-01-21 | 三菱電機株式会社 | Vacuum valve |
| CN104183416A (en) * | 2014-09-12 | 2014-12-03 | 安徽鑫龙电器股份有限公司 | Vacuum circuit breaker |
| JP2016092871A (en) * | 2014-10-30 | 2016-05-23 | 株式会社日立製作所 | Switch gear |
Non-Patent Citations (1)
| Title |
|---|
| 苑舜: "《真空断路器开断与关合不同负载时的操作过电压》", 31 December 2001 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161221 |