CN111696818B - Combined vacuum circuit breaker device - Google Patents
Combined vacuum circuit breaker device Download PDFInfo
- Publication number
- CN111696818B CN111696818B CN202010579048.8A CN202010579048A CN111696818B CN 111696818 B CN111696818 B CN 111696818B CN 202010579048 A CN202010579048 A CN 202010579048A CN 111696818 B CN111696818 B CN 111696818B
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- Prior art keywords
- vacuum circuit
- circuit breaker
- vacuum
- assembled
- transmission rod
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- 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
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- 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
- H01H33/02—Details
- H01H33/46—Interlocking mechanisms
- H01H33/52—Interlocking mechanisms for interlocking two or more switches
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- 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
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
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- 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
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The embodiment of the invention discloses a combined type vacuum circuit breaker device which comprises a plurality of vacuum circuit breakers, wherein a transmission rod for realizing switching-off through rotation is arranged in each vacuum circuit breaker, a switching-off device for controlling the transmission rod to rotate is arranged on the outer side of each vacuum circuit breaker, and adjacent vacuum circuit breakers are spliced through a quick splicing device; two ends of the transmission rod are rotatably connected with the vacuum circuit breaker through bearings, and a two-section type coupling mechanism used for connecting the transmission rods on two sides is arranged in the rapid splicing device; through establishing the vacuum circuit breaker who has single vacuum interrupter as the equipment individuality, the concatenation is assembled to two sets of vacuum circuit breaker individualities that adjacent to the quick splicing apparatus of cooperation installation, can splice out the vacuum circuit breaker who has a plurality of vacuum interrupter fast.
Description
Technical Field
The embodiment of the invention relates to the technical field of vacuum circuit breakers, in particular to a combined vacuum circuit breaker device.
Background
The vacuum circuit breaker is a circuit breaker which is widely applied in a power distribution network, is named because arc extinguishing media and insulating media in contact gaps after arc extinguishing are high vacuum, and has the advantages of small volume, light weight, suitability for frequent operation and no need of maintenance for arc extinguishing.
The vacuum arc-extinguishing chamber is a core component of the vacuum circuit breaker, the main function of the vacuum arc-extinguishing chamber is to separate two contact contacts in the vacuum arc-extinguishing chamber to realize the breaking effect, and manufacturers are generally required to customize the vacuum circuit breaker with a plurality of vacuum arc-extinguishing chambers according to the use requirements in certain specific environments.
Therefore, the following disadvantages still exist in the prior art:
(1) the number of the vacuum arc-extinguishing chambers on the existing vacuum circuit breaker cannot be changed, however, the number of the vacuum arc-extinguishing chambers may be added in the subsequent use process, and the number of the vacuum arc-extinguishing chambers cannot be changed after the vacuum circuit breaker is installed, so that the vacuum arc-extinguishing chambers are difficult to combine and splice according to special use scenes, and the practical flexibility is low;
(2) when a plurality of vacuum circuit breakers need to be switched off, an operator needs to switch off all the vacuum circuit breakers one by one, the effect of switching off the plurality of vacuum circuit breakers is difficult to realize, and the operation steps are relatively complex.
Disclosure of Invention
Therefore, the embodiment of the invention provides a combined vacuum circuit breaker device to solve the problems that the number of vacuum arc-extinguishing chambers on a vacuum circuit breaker in the prior art cannot be changed at any time according to requirements, and a plurality of vacuum circuit breakers are difficult to be opened simultaneously.
In order to achieve the above object, an embodiment of the present invention provides the following:
a combined vacuum circuit breaker device comprises a plurality of vacuum circuit breakers, wherein a transmission rod for realizing switching-out through rotation is arranged in each vacuum circuit breaker, a switching-out device for controlling the transmission rod to rotate is arranged on the outer side of each vacuum circuit breaker, and adjacent vacuum circuit breakers are spliced through a quick splicing device;
two ends of the transmission rod are rotatably connected with the vacuum circuit breaker through bearings, and a two-section type coupling mechanism used for connecting the transmission rods on two sides is arranged in the rapid splicing device;
the quick splicing device is integrally connected with two sides respectively, the vacuum circuit breaker is in a split structure and is adjacent to the vacuum circuit breaker, the quick splicing device is used for realizing quick splicing or disassembly, and the two-section type coupling mechanism is used for realizing quick linkage or disconnection.
As a preferred scheme of the invention, the rapid splicing device comprises two groups of spliced bearing frames which have the same structure and are hollow inside, the two groups of spliced bearing frames are fixedly connected with the vacuum circuit breaker, and the tail ends of the two groups of spliced bearing frames are connected with vertically distributed detachable rotating shaft mechanisms through rotation to drive the two groups of fixedly connected vacuum circuit breakers to move in a split mode.
As a preferable scheme of the present invention, protruding edges distributed along an outer layer of the vacuum circuit breaker are disposed on both sides of the vacuum circuit breaker, a sinking surface covering an outer edge of the vacuum circuit breaker is disposed on an outer side surface of the assembled receiving frame, and a rubber pad for pressing the protruding edges of the outer layer of the vacuum circuit breaker for sealing is disposed on an inner side of the sinking surface.
As a preferable scheme of the present invention, the detachable spindle mechanism includes a plurality of shaft levers installed at the rear of the left side of the assembled receiving frame, and a plurality of shaft lever seats welded at the rear of the right side of the assembled receiving frame and cooperating with the shaft levers, and the heights of the two groups of assembled receiving frames are kept the same after the shaft levers are inserted into the shaft lever seats.
As a preferable scheme of the present invention, the bottom end of the shaft rod is provided with a protruding structure, and the top end of the shaft rod seat is provided with a groove for inserting the protruding structure at the bottom end of the shaft rod.
As a preferable scheme of the present invention, the two-section type coupling mechanism includes two sets of coupling drums horizontally installed on the assembled receiving frames at two sides, a polygonal protrusion is disposed on an outer side of the coupling drum, the coupling drum is rotatably connected with the assembled receiving frames through a bearing, and the polygonal protrusion extends out of the outer side of the coupling drum.
As a preferable scheme of the present invention, polygonal grooves into which the polygonal protrusions are fitted are formed on end faces of both ends of the transmission rod, and the detachable rotating shaft mechanism is engaged with the end face of the transmission rod after the assembled receiving frame is installed on a side face of the vacuum circuit breaker.
As a preferable scheme of the present invention, the opposite surfaces of the two sets of coupling drums are provided with uniformly distributed annular tooth grooves, and the annular tooth grooves of the two sets of coupling drums are engaged after the two sets of assembled receiving frames are combined.
As a preferred scheme of the present invention, the top end of the assembly-type supporting frame on the left side is rotatably connected with a fixed waterproof frame, and the fixed waterproof frame is used for covering a gap between the top end face and the front end face of the two groups of assembly-type supporting frames after being assembled.
The embodiment of the invention has the following advantages:
(1) according to the invention, the vacuum circuit breaker with a single vacuum arc-extinguishing chamber is set as an assembly individual, and the quick splicing device is installed in a matching manner to assemble and splice two adjacent groups of vacuum circuit breaker individuals, so that the vacuum circuit breaker with a plurality of vacuum arc-extinguishing chambers can be quickly spliced;
(2) according to the invention, the two-section coupling mechanism is arranged in the quick splicing device, so that the transmission rods for controlling switching-on and switching-off in the vacuum circuit breakers can be automatically connected, and all the combined and spliced vacuum circuit breakers can be switched off after the switching-off devices of any one group of vacuum circuit breakers are pulled off, so that the switching-off steps of a plurality of vacuum circuit breakers are simplified.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic diagram of an overall splice in an embodiment of the present invention;
FIG. 2 is a top view of a quick-splice device according to an embodiment of the present invention;
FIG. 3 is a schematic view of a detachable hinge mechanism according to an embodiment of the present invention;
FIG. 4 is a schematic view of a coupling drum connection in an embodiment of the present invention.
In the figure: 1-a vacuum interrupter; 2-a transmission rod; 3-a brake-pulling device; 4-a rapid splicing device; 5-two-section type coupling mechanism;
401-splicing type bearing frame; 402-a detachable spindle mechanism; 4021-shaft rod; 4022-a shaft holder; 403-sinking surface; 404-fixing a waterproof frame;
501-coupling rotating cylinder; 502-polygonal bumps; 503-annular gullet.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, 2 and 4, the present invention provides a combined vacuum circuit breaker device, which specifically includes a plurality of vacuum circuit breakers 1, a transmission rod 2 for realizing switching-off through rotation is installed inside the vacuum circuit breakers 1, a switch-off device 3 for controlling the rotation of the transmission rod 2 is installed outside the vacuum circuit breakers 1, and adjacent vacuum circuit breakers 1 are spliced through a quick splicing device 4.
Two ends of the transmission rod 2 are rotatably connected with the vacuum circuit breaker 1 through bearings, and a two-section type coupling mechanism 5 for connecting the transmission rods 2 at two sides is arranged in the quick splicing device 4.
The fast splicing device 4 is integrally of a split structure which is respectively connected with the vacuum circuit breakers 1 on two sides, the adjacent vacuum circuit breakers 1 are spliced or disassembled fast through the fast splicing device 4, and the two-section type coupling mechanism 5 is linked or disconnected fast through the fast splicing device 4.
When need carry out the break-out to vacuum circuit breaker, pull down the 3 driving levers of the break-out of vacuum circuit breaker outside installation through the operator for the driving lever passes through bevel gear subassembly and drives transfer line 2 rotatory, and it is tensile arm with it articulated contact pull-down in with the vacuum arc extinguishing chamber to drive transfer line 2 at rotatory in-process, thereby makes two contacts among the vacuum circuit breaker break away from and realize the effect of breaking out.
As shown in fig. 1 to 4, the quick splicing device 4 includes two sets of assembled receiving frames 401 having the same structure and hollow inside, the two sets of assembled receiving frames 401 are all fixedly connected to the vacuum circuit breaker 1, and the two sets of assembled receiving frames 401 have their tail ends connected to the vertically distributed detachable rotating shaft mechanism 402 through rotation to drive the two sets of fixedly connected vacuum circuit breakers 1 to move toward each other.
Protruding edges distributed along the outer layer of the vacuum circuit breaker 1 are arranged on two sides of the vacuum circuit breaker 1, a sinking surface 403 covering the outer edge of the vacuum circuit breaker 1 is arranged on the outer side surface of the assembled bearing frame 401, and a rubber pad used for extruding the protruding edges of the outer layer of the vacuum circuit breaker 1 and used for sealing is arranged on the inner side of the sinking surface 403.
The detachable rotating shaft mechanism 402 comprises a plurality of shaft rods 4021 installed at the lateral rear part of the left assembled bearing frame 401 and a plurality of shaft rod seats 4022 welded at the lateral rear part of the right assembled bearing frame 401 and matched with the shaft rods 4021, and the heights of the two assembled bearing frames 401 are kept the same after the shaft rods 4021 are clamped into the shaft rod seats 4022.
The bottom end of the shaft 4021 is provided with a raised structure, and the top end of the shaft seat 4022 is provided with a groove for inserting the raised structure at the bottom end of the shaft (4021).
Two segmentation coupling mechanisms 5 include two sets of horizontal installation and accept the shaft rotary drum 501 on the frame 401 in the pin-connected panel of both sides, and the outside of shaft rotary drum 501 is equipped with polygonal polygon lug 502, and shaft rotary drum 501 is accepted the frame 401 with the pin-connected panel and is passed through the bearing and rotate the connection to polygon lug 502 extends the outside of shaft rotary drum 501.
Polygonal grooves matched with the polygonal bumps 502 to be clamped are formed in the end faces of the two ends of the transmission rod 2, and the assembled bearing frame 401 is installed on the side face of the vacuum circuit breaker 1, and then the detachable rotating shaft mechanism 402 is clamped with the end face of the transmission rod 2.
The opposite surfaces of the two sets of coupling rotating cylinders 501 are provided with uniformly distributed annular tooth grooves 503, and the two sets of assembled bearing frames 401 are combined and then the annular tooth grooves 503 of the two sets of coupling rotating cylinders 501 are meshed.
The top end of the left assembly type bearing frame 401 is rotatably connected with a fixed waterproof frame 404, and the fixed waterproof frame 404 is used for covering a gap between the top end face and the front end face after the two sets of assembly type bearing frames 401 are assembled.
Through establishing vacuum circuit breaker into solitary individuality, accept the frame 4 through bolt fixed mounting in the side of single vacuum circuit breaker 1 with first group's pin-connected panel earlier, later accept the frame 4 through bolt fixed mounting in the opposite flank of the vacuum circuit breaker 1 of treating the installation with another group's pin-connected panel for vacuum circuit breaker 1 accessible two groups of pin-connected panel of the vacuum circuit breaker 1 of treating the installation accept the frame 4 and merge the installation and realize making up another group's vacuum circuit breaker 1 of concatenation.
When the assembly type bearing frame 401 is installed on the opposite side surfaces of the two groups of vacuum circuit breakers, the coupling rotary drum 501 in the assembly type bearing frame 401 needs to be aligned to the end surface of the transmission rod 2 extending into the side surface of the vacuum circuit breaker 1, so that the polygonal bump 502 on the outer side of the coupling rotary drum 501 after the assembly type bearing frame 401 is installed can be completely clamped into the polygonal groove on the end surface of the transmission rod, and the transmission rod 2 can drive the coupling rotary drum 501 to rotate synchronously when rotating.
When two sets of assembled bearing frames 4 are to be assembled, the shaft 4021 at the rear side of the left assembled bearing frame 401 needs to be buckled into the shaft seat 4022 at the rear side of the other set of assembled bearing frame 401 in advance, so that the left assembled bearing frame 401 can rotate along the shaft seat 4022 on the right assembled bearing frame 401 through the shaft 4021, the left vacuum circuit breaker to be assembled is driven to rotate along the vacuum circuit breaker on the right side, after the two sets of assembled bearing frames 401 are overlapped, the fixed waterproof frame 404 on the left assembled bearing frame 401 is pulled down, the fixed waterproof frame 404 covers the gap between the top end and the front end of the two sets of assembled bearing frames 401, the fixed waterproof frame is installed on the two sets of assembled bearing frames 401 through bolts, and the two sets of vacuum circuit breakers are assembled through the quick assembling device.
When the two groups of assembled bearing frames 401 and the vacuum circuit breakers are installed completely, and the two groups of assembled bearing frames 401 rotate to be combined, the annular tooth grooves 503 on the opposite surfaces of the two groups of coupling rotary drums 501 inside the assembled bearing frames can be completely meshed, so that the transmission rod on one side can drive the other group of transmission rods 2 to rotate through the two-section type coupling mechanism 5 when rotating, and the effect that the plurality of vacuum circuit breakers can be pulled out synchronously after being spliced is achieved.
When two sets of vacuum circuit breakers 1 need to be disassembled, only the fixing bolts on the fixed waterproof frame 404 need to be loosened, so that the two sets of assembled bearing frames 401 can be opened along the detachable rotating shaft mechanism 402, and along with the opening of the two sets of assembled bearing frames 401, the annular tooth grooves on the opposite surfaces of the two sets of coupling rotating cylinders 501 in the two sets of assembled bearing frames automatically separate.
As an innovative point of the present embodiment:
(1) through establishing the vacuum circuit breaker who has single vacuum interrupter as the equipment individuality, the concatenation is assembled to two sets of vacuum circuit breaker individualities adjacent to cooperation installation quick splicing apparatus 4, can splice out vacuum circuit breaker 1 that has a plurality of vacuum interrupter fast.
(2) Through installing two segmentation coupling mechanisms 5 in quick splicing apparatus 4, can carry out automatic hookup with the transfer line of control switching-on, breaking brake in vacuum circuit breaker 1, can carry out the switching-off to all vacuum circuit breakers 1 that make up the concatenation after pulling down the brake-puller 3 of any group of vacuum circuit breaker 1, simplified the step of switching-off to a plurality of vacuum circuit breaker 1.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (7)
1. The combined vacuum circuit breaker device comprises a plurality of vacuum circuit breakers (1), and is characterized in that a transmission rod (2) for realizing switching-off through rotation is installed inside each vacuum circuit breaker (1), a switching-off device (3) for controlling the transmission rod (2) to rotate is installed on the outer side of each vacuum circuit breaker (1), and adjacent vacuum circuit breakers (1) are spliced through a quick splicing device (4);
two ends of the transmission rod (2) are rotatably connected with the vacuum circuit breaker (1) through bearings, and a two-section type coupling mechanism (5) used for connecting the transmission rods (2) at two sides is arranged in the quick splicing device (4);
the whole quick splicing device (4) is of a split structure which is respectively connected with the vacuum circuit breakers (1) on two sides, the adjacent vacuum circuit breakers (1) are quickly spliced or disassembled through the quick splicing device (4), and the two-section type coupling mechanism (5) is quickly linked or disconnected through the quick splicing device (4);
the rapid splicing device (4) comprises two groups of spliced bearing frames (401) which are identical in structure and hollow inside, the two groups of spliced bearing frames (401) are fixedly connected with the vacuum circuit breaker (1), and the tail ends of the two groups of spliced bearing frames (401) are connected with vertically distributed detachable rotating shaft mechanisms (402) in a rotating mode to drive the two groups of fixedly connected vacuum circuit breakers (1) to move in a split mode;
the two-section type coupling mechanism (5) comprises two groups of coupling rotating cylinders (501) which are horizontally arranged on the assembled bearing frames (401) at two sides, polygonal convex blocks (502) are arranged on the outer sides of the coupling rotating cylinders (501), the coupling rotating cylinders (501) are rotatably connected with the assembled bearing frames (401) through bearings, and the polygonal convex blocks (502) extend out of the outer sides of the coupling rotating cylinders (501).
2. A combined vacuum interrupter device according to claim 1, characterized in that the vacuum interrupter (1) is provided with protruding edges at both sides along the outer layer of the vacuum interrupter (1), and the outer side of the assembly receiving rack (401) is provided with a sinking surface (403) covering the outer edge of the vacuum interrupter (1), and the inner side of the sinking surface (403) is provided with a rubber gasket pressing the protruding edges of the outer layer of the vacuum interrupter (1) for sealing.
3. A modular vacuum circuit breaker apparatus as claimed in claim 1, wherein said detachable spindle mechanism (402) comprises a plurality of spindles (4021) mounted on the left side behind the modular cradle (401), and a plurality of spindle seats (4022) welded to the right side behind the modular cradle (401) to engage with the spindles (4021), and the heights of the two sets of modular cradles (401) remain the same after the spindles (4021) are snapped into the spindle seats (4022).
4. A combined vacuum interrupter device according to claim 3, characterized in that the bottom end of the shaft (4021) is provided with a protruding structure and the top end of the shaft seat (4022) is provided with a recess into which the protruding structure of the bottom end of the shaft (4021) is inserted.
5. A combined vacuum circuit breaker apparatus according to claim 1, wherein the end surfaces of the two ends of the transmission rod (2) are provided with polygonal grooves into which the polygonal protrusions (502) are fitted, and the detachable rotating shaft mechanism (402) is engaged with the end surface of the transmission rod (2) after the assembled receiving frame (401) is installed on the side surface of the vacuum circuit breaker (1).
6. A combined vacuum interrupter device according to claim 1, characterized in that the opposing faces of the two sets of coupling drums (501) are provided with evenly distributed annular splines (503), and the two sets of assembled receiving racks (401) are combined and then the annular splines (503) of the two sets of coupling drums (501) are engaged.
7. A combined vacuum circuit breaker apparatus as claimed in claim 1, wherein a fixed waterproof frame (404) is rotatably connected to the top end of the left assembled receiving frame (401), and the fixed waterproof frame (404) is used for covering a gap generated by the top end surface and the front end surface of the two assembled receiving frames (401) after being assembled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010579048.8A CN111696818B (en) | 2020-06-23 | 2020-06-23 | Combined vacuum circuit breaker device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010579048.8A CN111696818B (en) | 2020-06-23 | 2020-06-23 | Combined vacuum circuit breaker device |
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| Publication Number | Publication Date |
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| CN111696818A CN111696818A (en) | 2020-09-22 |
| CN111696818B true CN111696818B (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010579048.8A Active CN111696818B (en) | 2020-06-23 | 2020-06-23 | Combined vacuum circuit breaker device |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394197A (en) * | 2011-06-13 | 2012-03-28 | 苏肄鹏 | Combined-type high-voltage conversion switch |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6059619A (en) * | 1983-09-12 | 1985-04-06 | 株式会社日立製作所 | Vacuum breaker electrode |
| CN2919502Y (en) * | 2006-07-10 | 2007-07-04 | 沈阳工业大学 | Parted phase permanent magnetism mechanism vacuum circuit breaker |
| CN201311872Y (en) * | 2008-11-26 | 2009-09-16 | 常州万德福兰陵电器有限公司 | Vacuum circuit breaker |
| CN202150399U (en) * | 2011-08-11 | 2012-02-22 | 北京电研华源电力技术有限公司 | Vacuum circuit breaker |
| CN204834484U (en) * | 2015-08-20 | 2015-12-02 | 上海本固电气设备有限公司 | On -vehicle DC high speed circuit breaker's arc -extinguish chamber |
| CN205376381U (en) * | 2016-03-04 | 2016-07-06 | 福建省宏科电力科技有限公司 | Electric isolation and ground connection interconnection device of intelligent combination on post |
| CN107749369B (en) * | 2017-11-30 | 2020-07-07 | 四川奇通电气成套设备有限公司 | High-voltage restrike-free vacuum circuit breaker |
| CN109659844B (en) * | 2019-01-28 | 2024-02-06 | 深圳市蓝希望电子有限公司 | Constant-pressure airtight permanent magnet breaker cabinet |
| CN110233082B (en) * | 2019-06-27 | 2024-02-20 | 瑞熙恩电气（珠海）有限公司 | Permanent magnet vacuum circuit breaker and inflatable cabinet |
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2020
- 2020-06-23 CN CN202010579048.8A patent/CN111696818B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394197A (en) * | 2011-06-13 | 2012-03-28 | 苏肄鹏 | Combined-type high-voltage conversion switch |
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