CN108878206A - Disconnecting switch - Google Patents
Disconnecting switch Download PDFInfo
- Publication number
- CN108878206A CN108878206A CN201810815024.0A CN201810815024A CN108878206A CN 108878206 A CN108878206 A CN 108878206A CN 201810815024 A CN201810815024 A CN 201810815024A CN 108878206 A CN108878206 A CN 108878206A
- Authority
- CN
- China
- Prior art keywords
- disconnecting switch
- static contact
- moving knife
- tension spring
- groups
- 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
Links
- 230000003068 static effect Effects 0.000 claims abstract description 55
- 239000012212 insulator Substances 0.000 claims abstract description 23
- 238000009413 insulation Methods 0.000 claims abstract description 22
- 239000004020 conductor Substances 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 9
- 238000013461 design Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000002955 isolation Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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
- H01H31/02—Details
- H01H31/023—Base and stationary contacts mounted thereon
-
- 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
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses disconnecting switch, including static contact seat and disconnecting switch ontology, the static contact seat and disconnecting switch ontology split settings, assembly flexibly, are not used equipment limit, static contact seat is installed on inside switchgear, and disconnecting switch ontology is installed on static contact seat lower part；The static contact seat includes the static contact and supporting insulator of T-type structure, is fixed in supporting insulator on the upside of static contact, downside and disconnecting switch ontology separating brake or combined floodgate；Disconnecting switch ontology includes movable contact spring component, conductor, insulating support and braced frame, and the movable contact spring component simplifies structure, removes traditional to bolt fastener is worn, and two groups of tension springs up and down are arranged, reduce electrical body range, shorten insulation distance；Point discharge is reduced, safety and reliability are improved；Simplify assembling process, contact pressure can be directly realized by by upper and lower two groups of tension springs, simplify debugging process.
Description
Technical field
The invention belongs to power transmission and distribution switching equipment technology, in particular to a kind of disconnecting switch.
Background technique
Disconnecting switch is mainly used for providing visual fracture in maintenance process, guarantees securely and reliably, is high-voltage switch gear
A kind of most commonly used electric product, itself structure are simple in electric appliance.But presently, there are disconnecting switch there are it is more lack
It falls into：
（1）Volume is larger, structure old stuff, and largely use is integrated switched, so as to cause the switchgear for using disconnecting switch
Overall volume is larger, restricts the development of switchgear miniaturization.
（2）Static contact seat design defect：Presently, there are disconnecting switch structure as shown in Figure 1, by insulator be fixed on every
It leaves and closes in braced frame, moving knife contact surface is vertical with busbar shiplap joint face, and main bus-bar is connect with quiet knife to be needed to increase branch bar
（16）, upper and lower two groups of contact surfaces, quiet knife is fixed in supporting insulator, and insulator is connected with bracket.Structure old stuff, complexity are difficult
To realize the separation of switchgear compartment, degree of protection can not be provided, wedge angle burr is more, it is necessary to assure big insulation distance.
In making process, moving knife and static contact seat rigid shock do not buffer, influence product mechanical life；Installation Flexibility is limited simultaneously.
（3）Movable touch knife design defect：Disconnecting switch generally comprises rotatable movable touch knife, and movable touch knife is generally by two panels or more
Piece composition, wherein side and lower part insulating base inner conductor are hinged, and the other side is free end, are realized by the movement of operating mechanism
Free end rotation, connect with static contact and grounding contact respectively, realizes closing and being grounded for route.Existing movable touch knife assembly is adopted
With to bolt is worn, intermediate sandwiched spring realizes assembly, and this form increases assembly complexity, increase electrical body away from
From increasing phase spacing, and influenced by fastener machining accuracy, be also easy to produce point discharge；Contact pressure is in debugging process
It need to repeatedly adjust, nut, error is larger.
Summary of the invention
In view of the deficienciess of the prior art, the present invention provides a kind of disconnecting switch, change conventional isolation switches integration
Design, assembly flexibly, is not used equipment limit, applied widely.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is that：Disconnecting switch, including static contact seat and isolation
Switch main body, the static contact seat and disconnecting switch ontology split settings, static contact seat are installed on inside switchgear, disconnecting switch sheet
Body is installed on static contact seat lower part；The static contact seat includes the static contact and supporting insulator of T-type structure, is fixed on the upside of static contact
In supporting insulator, downside and disconnecting switch ontology separating brake or combined floodgate, when combined floodgate, static contact and disconnecting switch ontology are overlapped on together
On one straight line.
Further, the static contact is equipped with main bus-bar mounting hole and insulator mounting hole, and supporting insulator passes through exhausted
Edge mounting hole is fixedly connected with static contact, and supporting insulator is fixed on switchgear；Main bus-bar, which runs through, is installed on the master
On bus mounting hole, main bus-bar is directly connected to static contact.
Further, the disconnecting switch ontology includes movable contact spring component, conductor, insulating support and braced frame, described
Movable contact spring component is installed on conductor by rotating axle pin, and conductor connects insulating support, and the insulating support is fixed on support frame
On frame.
Further, the movable contact spring component includes two panels moving knife and upper and lower two groups of tension springs, respectively above tension spring and drop-down
Spring, upper tension spring is located at the top of moving knife, tension spring is located at the lower part of moving knife, and upper and lower two groups of ladders are offered on the moving knife and are drawn
Spring hole and through-hole, run through two groups of tension springs in ladder tension spring hole, and the two ends of upper tension spring and tension spring are installed on dynamic by straight pin
On knife；The through-hole is located at the lower position of upper tension spring, and ladder pivot pin is assembled on through-hole, and multi-diameter shaft pins position is in two panels moving knife
Between.
Further, ladder tension spring hole medial aperture is small, and outside aperture is big；The both ends of two groups of tension springs are respectively equipped with hook
Ring, the straight pin penetrate hook ring, and straight pin is located in the macropore on the outside of ladder tension spring hole, tension spring is fixed on moving knife.
Further, it is characterised in that：The ladder pivot pin mid diameter is greater than both ends diameter, and middle part is located at two panels moving knife
Between.
Further, convex platform is equipped on the inside of the moving knife upper end, lower end inside is equipped with lower convex platform.
Further, the static contact is incorporated into direction in moving knife and opens up guiding groove.
Further, the disconnecting switch further includes insulation merogenesis axis, insulate merogenesis axle sleeve on the outside of movable contact spring component, with
Rotating axle pin is coaxial, and the both ends of insulation merogenesis axis are equipped with left end and right end, turn of left end and right end and operating mechanism
Dynamic system connection, drives movable contact spring component to rotate around rotating axle pin, realization is closed a floodgate and separating brake.
Further, the disconnecting switch further includes three groups of insulation merogenesis axis, the static contact seat and disconnecting switch ontology packet
Three groups are included, three-phase structure is constituted；The insulation merogenesis axis assembling rear enclosure is coaxial with rotating axle pin on the outside of movable contact spring component, often
It is structure as a whole between group disconnecting switch ontology by the merogenesis axis connection that insulate, the outer end of insulation merogenesis axis is respectively equipped with left end
And the rotation system connection of right end, left end and right end and operating mechanism, drive three groups of movable contact spring components around rotating axle pin
Combined floodgate and separating brake are realized in rotation.
Compared with prior art, the invention has the advantages that：
（1）Change conventional isolation switches integrated design, static contact seat of the invention and disconnecting switch ontology are split-type design, dress
With flexible, equipment limit is not used, it can be by changing phase spacing and corresponding size, suitable for different occasions；It is applicable to
It is single-phase to three-phase system.
（2）By merogenesis axis connection between disconnecting switch ontology, merogenesis axis can drive movable plate to rotate, and realize and close a floodgate and divide
Lock；
（3）Movable contact spring component of the invention simplifies structure, removes traditional to bolt fastener is worn, and two groups of tension springs up and down are arranged,
Electrical body range is reduced, insulation distance is shortened；Point discharge is reduced, safety and reliability are improved；Simplify assembling process, contact
Pressure can be directly realized by by upper and lower two groups of tension springs, simplify debugging process.
Detailed description of the invention
Fig. 1 is the disconnecting switch structural schematic diagram of the prior art；
Fig. 2 is the structural schematic diagram of the disconnecting switch of embodiment 1；
Fig. 3 is the structural schematic diagram of static contact；
Fig. 4 is the disconnecting switch scheme of installation of embodiment 1；
Fig. 5 is that the movable contact spring component of embodiment 1 installs perspective view；
Fig. 6 is the movable contact spring component structure diagram of embodiment 1；
Fig. 7 is the moving knife structural schematic diagram of embodiment 1；
Fig. 8 is the A-A cross-sectional view of Fig. 7；
Fig. 9 is the disconnecting switch perspective view of embodiment 2；
Figure 10 is the disconnecting switch combined floodgate schematic diagram of embodiment 2.
In figure, 1. static contact seats；2. disconnecting switch ontology；3. insulate merogenesis axis；4. conductor；5. insulating support；6. support frame
Frame；7. static contact；8. supporting insulator；9. movable contact spring component；10. switchgear；11. main bus-bar；12. busbar compartment；13.
Other compartments；14. rotating axle pin；15. tension spring；16. moving knife；Tension spring on 17.；18. straight pin；19. ladder pivot pin；20.
Ladder tension spring hole；21. through-hole；22. convex platform；23. lower convex platform；31. left end；32. right end；71. main bus-bar mounting hole；
72. insulator mounting hole；73. being oriented to groove.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is further illustrated.
Embodiment 1
As shown in Figures 2 and 4, disconnecting switch, including static contact seat 1 and disconnecting switch ontology 2, static contact seat 1 divide with disconnecting switch ontology 2
Body setting, static contact seat 1 are installed on inside switchgear 10, and disconnecting switch ontology 2 is installed on 1 lower part of static contact seat.Static contact seat 1 includes
The static contact 7 and supporting insulator 8 of T-type structure are fixed in supporting insulator 8 on the upside of static contact 7, downside and disconnecting switch sheet
2 separating brake of body or combined floodgate, when combined floodgate, static contact 7 and disconnecting switch ontology 2 are overlapped on the same line.
Fig. 2 and 4, as shown in connection with fig. 5, disconnecting switch ontology 2 include movable contact spring component 9, insulation merogenesis axis 3, conductor 4, absolutely
Edge bracket 5 and braced frame 6, insulating support 5 are installed in other compartments 13, and insulation merogenesis axis 3 and moving knife component 9 are located at bus
In compartment 12,9 one end of moving knife component is free end, the other end passes through rotating axle pin 14 and conductor 4 is hinged, be can be rotated, conductor 4 connects
Insulating support 5 is connect, insulating support 5 is fixed in braced frame 6.The combined floodgate and separating brake of disconnecting switch are by the merogenesis axis 3 that insulate
It realizes：Insulation merogenesis axis 3 is placed on 9 outside of movable contact spring component, and coaxial with rotating axle pin 14, the both ends of insulation merogenesis axis 3 are equipped with
Left end and right end（It may refer to the end of embodiment 2）, the rotation system connection of left end and right end and operating mechanism,
It drives movable contact spring component 9 to rotate around rotating axle pin 14, realizes combined floodgate and separating brake.
As shown in Figure 3-4, static contact 7 is equipped with main bus-bar mounting hole 71 and insulator mounting hole 72, and supporting insulator 8 is logical
It crosses insulator mounting hole 72 to be fixedly connected with static contact 7, supporting insulator 8 is fixed on switchgear 10；Main bus-bar 11 runs through
It is installed on main bus-bar mounting hole 71, main bus-bar 11 is directly connected to static contact 7, is not necessarily to branch bar, only one group of faying surface, drop
Low contact resistance.
For the smooth combined floodgate for guaranteeing disconnecting switch, on static contact 7, moving knife component 9 is incorporated into direction and opens up guiding groove 73.
As viewed in figures 5-8, movable contact spring component 9 includes two panels moving knife 16, upper tension spring 17, tension spring 15, and upper tension spring 17 is located at
The top of moving knife 16, tension spring 15 are located at the lower part of moving knife 16, and upper and lower two groups of ladder tension springs hole 20 and one is offered on moving knife 16
A through-hole 21, runs through two groups of tension springs in ladder tension spring hole 20, and the two ends of upper tension spring 17 and tension spring 15 are pacified by straight pin 18
Loaded on moving knife 16；Through-hole 21 is located at the lower position of upper tension spring 17, and ladder pivot pin 19, ladder pivot pin are assembled on through-hole 21
19 mid diameters are greater than both ends diameter, and middle part is between two panels moving knife 16.The cooperation of tension spring and moving knife 16 and straight pin 18 is closed
System is particularly：20 medial apertures of ladder tension spring hole are small, and outside aperture is big, i.e., inside is aperture, and outside is macropore；Two groups of tension springs
Both ends be respectively equipped with hook ring, straight pin 18 penetrates hook ring, and straight pin 18 is located in the macropore in 20 outside of ladder tension spring hole, will draw
Spring is fixed on moving knife 16.Upper tension spring 17 provides the contact pressure between moving knife 16 and static contact 7, tension spring 15 provide moving knife 16 with
Contact pressure between conductor 4.
In order to increase the contact area between moving knife 16 and static contact 7, moving knife 16 and conductor 4, it is equipped on the inside of 16 upper end of moving knife
Convex platform 11, lower end inside are equipped with lower convex platform 12.
Embodiment 2
The present embodiment illustrates there is three groups of insulation merogenesis axis by taking three groups of static contact seats and disconnecting switch ontology as an example.The stationary contact of monomer
Seat, disconnecting switch body construction are in the same manner as in Example 1, and details are not described herein again.Only illustratively every group of disconnecting switch ontology it
Between assembled relation.
As shown in figs. 9-10, after insulation merogenesis axis 3 assembles, it is placed on 9 outside of movable contact spring component, it is coaxial with rotating axle pin 14
（With described in embodiment 1）, it is connected as one by the merogenesis axis 3 that insulate between every group of disconnecting switch ontology 2, insulate merogenesis axis
3 outer end is respectively equipped with left end 31 and right end 32, and left end 31 and right end 32 are connect with the rotation system of operating mechanism,
It drives three groups of movable contact spring components 9 to rotate around rotating axle pin 14, realizes combined floodgate and separating brake.
In conclusion the present invention changes conventional isolation switches integrated design, assembly flexibly, is not used equipment limit,
It can be by changing phase spacing and corresponding size, suitable for different occasions；It is applicable to single-phase to three-phase system；Of the invention is dynamic
Contact assemblies simplify structure, remove traditional to bolt fastener is worn, and two groups of tension springs up and down are arranged, reduce electrical body range,
Shorten insulation distance；Point discharge is reduced, safety and reliability are improved；Simplify assembling process, contact pressure can pass through upper and lower two
Group tension spring is directly realized by, and simplifies debugging process.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, the art
Those of ordinary skill, within the essential scope of the present invention, the variations, modifications, additions or substitutions made all should belong to the present invention
Protection scope.
Claims (10)
1. disconnecting switch, it is characterised in that：Including static contact seat and disconnecting switch ontology, the static contact seat and disconnecting switch ontology point
Body setting, static contact seat are installed on inside switchgear, and disconnecting switch ontology is installed on static contact seat lower part；The static contact seat includes T
The static contact and supporting insulator of type structure, static contact upside are fixed in supporting insulator, downside and disconnecting switch ontology point
Lock or combined floodgate, when combined floodgate, static contact and disconnecting switch ontology are overlapped on the same line.
2. disconnecting switch according to claim 1, it is characterised in that：The static contact is equipped with main bus-bar mounting hole and absolutely
Edge mounting hole, supporting insulator are fixedly connected by insulator mounting hole with static contact, and supporting insulator is fixed on switch and sets
It is standby upper；Through being installed on the main bus-bar mounting hole, main bus-bar is directly connected to main bus-bar with static contact.
3. disconnecting switch according to claim 1, it is characterised in that：The disconnecting switch ontology include movable contact spring component,
Conductor, insulating support and braced frame, the movable contact spring component are installed on conductor by rotating axle pin, conductor connection insulation branch
Frame, the insulating support are fixed in braced frame.
4. disconnecting switch according to claim 3, it is characterised in that：The movable contact spring component include two panels moving knife and it is upper,
Lower two groups of tension springs, respectively upper tension spring and tension spring, upper tension spring is located at the top of moving knife, tension spring is located at the lower part of moving knife, institute
It states and offers upper and lower two groups of ladder tension spring holes and through-hole on moving knife, two groups of tension springs, upper tension spring and drop-down are run through in ladder tension spring hole
The two ends of spring are installed on moving knife by straight pin；The through-hole is located at the lower position of upper tension spring, and assembles on through-hole
Ladder pivot pin, multi-diameter shaft pins position is between two panels moving knife.
5. disconnecting switch according to claim 4, it is characterised in that：Ladder tension spring hole medial aperture is small, apertura lateralis
Diameter is big；The both ends of two groups of tension springs are respectively equipped with hook ring, and the straight pin penetrates hook ring, and straight pin is located on the outside of ladder tension spring hole
In macropore, tension spring is fixed on moving knife.
6. disconnecting switch according to claim 4, it is characterised in that：It is straight that the ladder pivot pin mid diameter is greater than both ends
Diameter, middle part is between two panels moving knife.
7. disconnecting switch according to claim 4, it is characterised in that：Convex platform, lower end are equipped on the inside of the moving knife upper end
Inside is equipped with lower convex platform.
8. disconnecting switch according to claim 4, it is characterised in that：The static contact is incorporated into direction in moving knife and opens up guiding
Groove.
9. according to the described in any item disconnecting switch of claim 3-8, it is characterised in that：The disconnecting switch further includes insulation point
Nodal axisn, insulation merogenesis axle sleeve is coaxial with rotating axle pin on the outside of movable contact spring component, the both ends of insulation merogenesis axis be equipped with left end and
The connection of the rotation system of right end, left end and right end and operating mechanism, drives movable contact spring component to rotate around rotating axle pin, real
Now combined floodgate and separating brake.
10. according to the described in any item disconnecting switch of claim 3-8, it is characterised in that：The disconnecting switch further includes three groups
Insulate merogenesis axis, and the static contact seat and disconnecting switch ontology include three groups, constitutes three-phase structure；After the insulation merogenesis axis assembling
It is placed on the outside of movable contact spring component, coaxial with rotating axle pin, passing through insulation merogenesis axis connection between every group of disconnecting switch ontology is one
The outer end of body structure, insulation merogenesis axis is respectively equipped with left end and right end, the rotation of left end and right end and operating mechanism
System connection, drives three groups of movable contact spring components to rotate around rotating axle pin, realizes combined floodgate and separating brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810815024.0A CN108878206A (en) | 2018-07-24 | 2018-07-24 | Disconnecting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810815024.0A CN108878206A (en) | 2018-07-24 | 2018-07-24 | Disconnecting switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108878206A true CN108878206A (en) | 2018-11-23 |
Family
ID=64304676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810815024.0A Pending CN108878206A (en) | 2018-07-24 | 2018-07-24 | Disconnecting switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108878206A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616936A (en) * | 2018-12-15 | 2019-04-12 | 浙江绿丰电气有限公司 | A kind of environmental protection gas-insulated ring network cabinet and its disconnecting switch |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203799935U (en) * | 2014-03-17 | 2014-08-27 | 广州霍斯通电气股份有限公司 | Isolation switch |
| CN203799946U (en) * | 2014-03-17 | 2014-08-27 | 广州霍斯通电气股份有限公司 | Three-position disconnector and solid insulation cabinet |
| CN203983116U (en) * | 2014-07-14 | 2014-12-03 | 厦门协成实业有限公司 | A kind of isolating switch |
| US9147537B1 (en) * | 2012-10-13 | 2015-09-29 | Cleaveland/Price Inc. | Double break disconnect switch |
| CN206628395U (en) * | 2017-04-10 | 2017-11-10 | 青岛特锐德电气股份有限公司 | Three-station isolating grounding switch |
| CN206697406U (en) * | 2016-12-09 | 2017-12-01 | 北京双杰电气股份有限公司 | A kind of disconnecting switch |
-
2018
- 2018-07-24 CN CN201810815024.0A patent/CN108878206A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9147537B1 (en) * | 2012-10-13 | 2015-09-29 | Cleaveland/Price Inc. | Double break disconnect switch |
| CN203799935U (en) * | 2014-03-17 | 2014-08-27 | 广州霍斯通电气股份有限公司 | Isolation switch |
| CN203799946U (en) * | 2014-03-17 | 2014-08-27 | 广州霍斯通电气股份有限公司 | Three-position disconnector and solid insulation cabinet |
| CN203983116U (en) * | 2014-07-14 | 2014-12-03 | 厦门协成实业有限公司 | A kind of isolating switch |
| CN206697406U (en) * | 2016-12-09 | 2017-12-01 | 北京双杰电气股份有限公司 | A kind of disconnecting switch |
| CN206628395U (en) * | 2017-04-10 | 2017-11-10 | 青岛特锐德电气股份有限公司 | Three-station isolating grounding switch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616936A (en) * | 2018-12-15 | 2019-04-12 | 浙江绿丰电气有限公司 | A kind of environmental protection gas-insulated ring network cabinet and its disconnecting switch |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181123 |
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| RJ01 | Rejection of invention patent application after publication |