CN113675047A - Compact electromagnetic repulsion force operating mechanism and three-phase switch using same - Google Patents
Compact electromagnetic repulsion force operating mechanism and three-phase switch using same Download PDFInfo
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- CN113675047A CN113675047A CN202110923226.9A CN202110923226A CN113675047A CN 113675047 A CN113675047 A CN 113675047A CN 202110923226 A CN202110923226 A CN 202110923226A CN 113675047 A CN113675047 A CN 113675047A
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- rocker arm
- pull rod
- assembly
- electromagnetic repulsion
- compact electromagnetic
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- 230000007246 mechanism Effects 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 18
- 230000003139 buffering effect Effects 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1045—Multiple circuits-breaker, e.g. for the purpose of dividing current or potential drop
Abstract
The invention discloses a compact electromagnetic repulsion operating mechanism and a three-phase switch using the same, wherein the compact electromagnetic repulsion operating mechanism comprises a pull rod, an upper coil plate assembly, a repulsion plate, a lower coil plate assembly, a hydraulic buffer and a rocker arm assembly; the repulsion disc can be movably positioned between the upper coil disc assembly and the lower coil disc assembly up and down and is fixedly connected with the pull rod; the middle position of the rocker arm component is hinged on a fixed body through a rotating shaft; the upper end part of the pull rod is used for being connected with the moving contact, and the lower end part of the pull rod is hinged with one end part of the rocker arm component; the hydraulic buffer is positioned above the other end of the rocker arm assembly and is suitable for being abutted against the rocker arm assembly in the downward process of the repulsive force disc so as to play a role in buffering. The hydraulic buffer and the repulsion mechanism are arranged in parallel, so that the overall height of the rapid mechanical switch is reduced, and the installation requirement of a conventional switch cabinet is met.
Description
Technical Field
The invention relates to a compact electromagnetic repulsion force operating mechanism and a three-phase switch using the same.
Background
The quick mechanical switch based on the electromagnetic repulsion mechanism has the advantages of simple structure, high opening and closing speed and the like, has wide application prospect in various fields of power system fault current limiting, electric energy quality control, direct current circuit breakers, quick arc extinguishing and the like, and is particularly increasingly popularized in alternating current systems.
However, in the middle and low voltage field of the ac system, the three-phase switch is mainly arranged in the switch cabinet, the size of the switch cabinet body is compact, especially the size in the height direction, and the main components of the electromagnetic repulsion operating mechanism of the conventional fast mechanical switch are vertically arranged in parallel at the lower part of the three-phase vacuum arc-extinguishing chamber, so that the overall height size of the switch is large, and the installation requirements of the conventional switch cabinet cannot be met. In addition, the electromagnetic repulsion mechanism needs to be matched with a trigger circuit and comprises components such as a trigger capacitor and a thyristor, the size of the quick mechanical switch is further increased, and the size compatibility and interchangeability of a common spring-operated circuit breaker handcart and a quick mechanical switch handcart can not be basically realized through the traditional structural arrangement.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a compact electromagnetic repulsion operating mechanism, wherein a hydraulic buffer and a repulsion mechanism are arranged in parallel, so that the overall height of a quick mechanical switch is reduced, and the installation requirement of a conventional switch cabinet is met.
In order to solve the technical problems, the technical scheme of the invention is as follows: a compact electromagnetic repulsion operating mechanism is used for controlling the opening and closing between a moving contact and a fixed contact and comprises a pull rod, an upper coil plate component, a repulsion plate, a lower coil plate component, a hydraulic buffer and a rocker arm component; wherein the content of the first and second substances,
the repulsion plate can be movably positioned between the upper coil plate assembly and the lower coil plate assembly up and down and is fixedly connected with the pull rod;
the middle position of the rocker arm component is hinged on a fixed body through a rotating shaft;
the upper end part of the pull rod is used for being connected with the moving contact, and the lower end part of the pull rod is hinged with one end part of the rocker arm component;
the hydraulic buffer is positioned above the other end of the rocker arm assembly and is suitable for being abutted against the rocker arm assembly in the downward process of the repulsive force disc so as to play a role in buffering.
Further, the upper coil panel component and the lower coil panel component respectively comprise a steel coil panel and a copper wire wound on the steel coil panel.
Further, in order to enable the pull rod to lift stably, a guide sleeve which is used for the pull rod to penetrate through and is suitable for guiding the pull rod to lift is arranged on one steel coil disc.
Further, in order to improve the electromagnetic conversion efficiency, the repulsive disc is a copper disc.
Furthermore, the compact electromagnetic repulsion operating mechanism also comprises a spring bistable mechanism which is connected with one end part of the rocker arm component, keeps a compressed state and is suitable for providing the repulsion plate with holding force required by a closing state and an opening state.
Furthermore, the compact electromagnetic repulsion operating mechanism also comprises a closing spring assembly, wherein the closing spring assembly is positioned above the other end of the rocker arm assembly and is suitable for abutting against the other end of the rocker arm assembly in the opening process; wherein the content of the first and second substances,
in the brake opening process, the hydraulic buffer is in contact with the rocker arm assembly before the closing spring assembly.
The rocker arm assembly comprises a pull rod rocker arm, a hydraulic buffer collision arm, a closing spring assembly collision arm and a bistable rocker arm which are fixedly sleeved on the rotating shaft respectively; wherein the content of the first and second substances,
the pull rod rocker arm is hinged with the pull rod;
the hydraulic buffer collision arm is suitable for colliding with the hydraulic buffer in the process that the repulsive disc descends;
the closing spring assembly collision arm is suitable for colliding with the closing spring assembly in the descending process of the repulsion plate;
the bistable rocker arm is connected with the spring bistable mechanism.
Further, in order to prevent the pull rod rocker arm, the hydraulic buffer collision arm, the closing spring component collision arm and the bistable rocker arm from rotating relatively, the rotating shaft is in a milled flat groove structure.
Further, in order to prevent the tie rod rocker arm, the hydraulic buffer collision arm, the closing spring assembly collision arm and the bistable rocker arm from moving in the axial direction of the rotating shaft, a set screw is screwed to each of the tie rod rocker arm, the hydraulic buffer collision arm, the closing spring assembly collision arm and the bistable rocker arm, and the head of the set screw abuts against the rotating shaft.
Further, the fixing body comprises at least one hoop, and the rotating shaft is rotatably installed in the hoop.
Furthermore, the upper section of the pull rod is an insulating rod, and the lower section of the pull rod is a metal rod.
The invention also provides a three-phase switch which comprises three compact electromagnetic repulsion operating mechanisms, wherein rotating shafts of the three compact electromagnetic repulsion operating mechanisms are linked.
After the technical scheme is adopted, the invention has the following beneficial effects:
1. the invention is provided with the rocker arm assembly, and adopts the design scheme that the hydraulic buffer and the repulsion mechanism are parallel, so that the structure of the whole electromagnetic repulsion operating mechanism is compact, the overall height of the rapid mechanical switch is reduced, and the installation size requirement of the conventional switch cabinet is met;
2. the upper wire coil assembly and the lower wire coil assembly both adopt steel coil disks, and the magnetic gathering performance of the iron disks is used, so that the magnetic field intensity of a repulsion disk is enhanced, the electromagnetic conversion efficiency is improved, the voltage capacity value parameter of a trigger circuit is reduced, the volume of the trigger circuit is reduced, and the volume size of the quick mechanical switch is further reduced;
3. the invention adopts the copper disc as the repulsion disc, thus greatly improving the electromagnetic conversion efficiency and promoting the whole volume of the trigger circuit to be reduced by about 40 percent;
4. in the switching-off process, the switching-on spring assembly is extruded to offset the force of the spring bistable mechanism part, and stores energy in the extruding process, and when the switching-on action is carried out, the mechanical switch is assisted to switch on;
5. the rocker arm assembly is matched with the pull rod, the hydraulic buffer, the closing spring assembly and the spring bistable mechanism properly in a mode that the pull rod rocker arm, the hydraulic buffer collision arm, the closing spring assembly collision arm and the bistable rocker arm are parallel, and the whole rocker arm assembly is fastened and reasonably promoted, so that the whole compact electromagnetic repulsion operating mechanism can work stably for a long time;
6. the rotating shafts of the three-phase switch are linked, so that the consistency of the opening and closing states of the three-phase switch of the circuit breaker is realized, and the consistency of the opening and closing actions of the three-phase switch is effectively improved.
Drawings
Fig. 1 is a schematic structural diagram of a compact electromagnetic repulsion operating mechanism of the present invention in an open state;
fig. 2 is a schematic structural diagram of the compact electromagnetic repulsion operating mechanism of the present invention in a closing state;
FIG. 3 is a schematic diagram of a three-phase switch according to the present invention;
FIG. 4 is a schematic structural view of a rocker arm assembly of the three-phase switch of the present invention;
fig. 5 is an enlarged view of a portion a of fig. 4.
Detailed Description
In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
Example one
As shown in fig. 1, 2, 3, 4, and 5, a compact electromagnetic repulsion operation mechanism for controlling opening and closing between a moving contact and a static contact comprises a pull rod 1, an upper coil plate assembly 2, a repulsion plate 3, a lower coil plate assembly 4, a hydraulic buffer 5, and a rocker arm assembly 6; wherein the content of the first and second substances,
the repulsion coil 3 can be movably positioned between the upper coil assembly 2 and the lower coil assembly 4 up and down and is fixedly connected with the pull rod 1;
the middle position of the rocker arm component 6 is hinged on a fixed body through a rotating shaft 10;
the upper end part of the pull rod 1 is used for being connected with the moving contact, and the lower end part of the pull rod is hinged with one end part of the rocker arm component 6;
the hydraulic buffer 5 is located above the other end of the rocker arm assembly 6 and is adapted to abut against the rocker arm assembly 6 during the downward movement of the repulsive disc 3 to perform a buffering function.
Specifically, the rocker arm assembly 6 is arranged, and the hydraulic buffer 5 and the repulsion mechanism are arranged in parallel, so that the structure of the whole electromagnetic repulsion operating mechanism is compact, the overall height of the rapid mechanical switch is reduced, and the installation size requirement of a conventional switch cabinet is met.
In the present embodiment, a coil support is connected between the upper coil panel assembly 2 and the lower coil panel assembly 4, and the relative positions of the upper coil panel assembly 2 and the lower coil panel assembly 4 are fixed by the coil support.
In the present embodiment, the hydraulic buffer 5 is fixed to the lower coil disc assembly 4 by screwing, and other methods can be adopted.
In this embodiment, the compact electromagnetic repulsion operation mechanism further includes a switch bracket connected to the lower coil panel assembly 4 for supporting.
In this embodiment, the moving contact and the fixed contact are located in the vacuum arc-extinguishing chamber or the embedded pole.
In the present embodiment, the upper and lower coil disk assemblies 2 and 4 include a steel coil disk and a copper wire wound around the steel coil disk, respectively.
Specifically, the upper coil assembly 2 and the lower coil assembly 4 both adopt steel coil panels, and the magnetic gathering performance of the iron coil panels is used, so that the magnetic field intensity of a repulsion coil is enhanced, the electromagnetic conversion efficiency is improved, the voltage capacity parameter of the trigger circuit is reduced, the volume of the trigger circuit is reduced, and the volume size of the rapid mechanical switch is further reduced.
In the present embodiment, the repulsive disc 3 is a copper disc in order to improve the electromagnetic conversion efficiency.
Specifically, the invention adopts the copper disc as the repulsion disc 3, thereby greatly improving the electromagnetic conversion efficiency and reducing the whole volume of the trigger circuit by about 40 percent.
As shown in fig. 1, 2 and 3, in order to make the pull rod 1 rise and fall smoothly, a guide sleeve is arranged on one of the steel coil discs, through which the pull rod 1 passes and is suitable for guiding the pull rod 1 to rise and fall.
In this embodiment, the guide sleeve is located on the steel coil disc of the lower coil disc assembly 4.
As shown in fig. 1 and 2, the compact electromagnetic repulsion operation mechanism further comprises a spring bistable mechanism 8, wherein the spring bistable mechanism 8 is connected with one end of the rocker arm assembly 6, maintains a compressed state, and is suitable for providing a holding force required by a closing state and an opening state for the repulsion plate 3.
As shown in fig. 1, 2, 3, 4 and 5, the compact electromagnetic repulsion operating mechanism further includes a closing spring assembly 9, wherein the closing spring assembly 9 is located above the other end of the rocker arm assembly 6 and is adapted to abut against the other end of the rocker arm assembly 6 during the opening process; wherein the content of the first and second substances,
during opening, the hydraulic damper 5 contacts the rocker arm assembly 6 before the closing spring assembly 9.
Specifically, during the opening process, the closing spring assembly 9 is pressed to offset the force of the spring bistable mechanism 8, and stores energy during the pressing process, and when the closing action is performed, the mechanical switch is assisted to be closed.
In this embodiment, the damping force provided by the hydraulic damper 5 is smaller than the force provided by the closing spring assembly 9.
In this embodiment, the closing spring assembly 9 is fixed to the lower coil disc assembly 4, and may be screwed or screwed, or may adopt other manners.
As shown in fig. 4 and 5, the rocker arm assembly 6 includes a pull rod rocker arm 61, a hydraulic buffer collision arm 62, a closing spring assembly collision arm 63, and a bistable rocker arm 64 fixedly sleeved on the rotating shaft 10; wherein the content of the first and second substances,
the pull rod rocker arm 61 is hinged with the pull rod 1;
the hydraulic-damper collision arm 62 is adapted to collide with the hydraulic damper 5 during the descent of the repulsive disc 3;
the closing spring assembly collision arm 63 is adapted to collide with the closing spring assembly 9 in a descending process of the repulsive disc 3;
the bistable rocker arm 64 is connected to the spring bistable mechanism 8.
In the present embodiment, the tie rocker arm 61 and the bistable rocker arm 64 extend toward one end portion of the rocker arm unit 6, and the hydraulic cushion collision arm 62 and the closing spring unit collision arm 63 extend toward the other end portion of the rocker arm unit 6. The spring bistable mechanism 8 is hinged with the bistable rocker arm 64.
As shown in fig. 4 and 5, the rotating shaft 10 has a milled flat groove structure in order to prevent relative rotation between the lever arm 61, the hydraulic shock absorber collision arm 62, the closing spring unit collision arm 63, and the bistable arm 64 and the rotating shaft 10.
As shown in fig. 4 and 5, in order to prevent the tie bar rocker arm 61, the hydraulic cushion collision arm 62, the closing spring unit collision arm 63, and the bistable rocker arm 64 from moving in the axial direction of the rotating shaft 10, a set screw, the head of which abuts against the rotating shaft 10, is screwed to each of the tie bar rocker arm 61, the hydraulic cushion collision arm 62, the closing spring unit collision arm 63, and the bistable rocker arm 64.
In this embodiment, the rocker arm assembly 6 is matched with the pull rod 1, the hydraulic buffer 5, the closing spring assembly 9 and the spring bistable mechanism 8 properly in a manner that the pull rod rocker arm 61, the hydraulic buffer collision arm 62, the closing spring assembly collision arm 63 and the bistable rocker arm 6 are parallel, and the whole rocker arm assembly 6 is fastened reasonably, so that the whole compact electromagnetic repulsion operating mechanism can work stably for a long time. In the process of opening and closing actions of the mechanical switch, the pull rod 1 drives the pull rod rocker arm 61 to rotate by taking the rotating shaft 10 as a center, the rotating shaft 10 is driven by the pull rod rocker arm 61 to rotate, the bistable rocker arm 64 is driven to rotate synchronously, and the retaining force of the spring bistable mechanism 8 needs to be overcome in the rotating process. In addition, hydraulic buffer collides arm 62, closing spring assembly collides arm 63 rotates under pivot 10 drives, and when separating the floodgate, hydraulic buffer collides arm 62 and strikes hydraulic buffer 5 at rotation in-process, realizes mechanical switch's buffering action, avoids the bad repulsion dish 3 of the fast striking of separating the floodgate action, and closing spring assembly collides arm 63 extrudees closing spring assembly 9 simultaneously, and closing spring assembly 9 is being extruded the in-process energy storage, helps mechanical switch to close the floodgate when closing the floodgate action, and then reduces the degree of difficulty of closing the floodgate.
As shown in fig. 4 and 5, the fixing body includes at least one hoop 7, and the rotating shaft 10 is rotatably installed in the hoop 7.
As shown in fig. 1, 2 and 3, the upper section of the pull rod 1 is an insulating rod, and the lower section is a metal rod.
In this embodiment, the insulating rod can play the insulating effect, and the metal pole can guarantee intensity.
In this embodiment, the insulating rod and the metal rod are connected by a screw thread.
Example two
As shown in fig. 1, 2, 3, 4 and 5, a three-phase switch includes three compact electromagnetic repulsion operation mechanisms according to the first embodiment, and the rotating shafts 10 of the three compact electromagnetic repulsion operation mechanisms are linked.
In the embodiment, the adjacent rotating shafts 10 are linked through bushings.
Specifically, the rotating shaft 10 of the three-phase switch is linked, so that the consistency of the opening and closing states of the three-phase switch of the circuit breaker is realized, and the consistency of the opening and closing actions of the three-phase switch is effectively improved.
The above embodiments are described in further detail to solve the technical problems, technical solutions and advantages of the present invention, and it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A compact electromagnetic repulsion operating mechanism is used for controlling the opening and closing between a moving contact and a static contact and is characterized in that,
the device comprises a pull rod (1), an upper coil plate component (2), a repulsive force plate (3), a lower coil plate component (4), a hydraulic buffer (5) and a rocker arm component (6); wherein the content of the first and second substances,
the repulsion plate (3) can be movably positioned between the upper coil plate component (2) and the lower coil plate component (4) up and down and is fixedly connected with the pull rod (1);
the middle position of the rocker arm component (6) is hinged on a fixed body through a rotating shaft (10);
the upper end part of the pull rod (1) is connected with the moving contact, and the lower end part of the pull rod is hinged with one end part of the rocker arm component (6);
the hydraulic buffer (5) is positioned above the other end of the rocker arm assembly (6) and is suitable for abutting against the rocker arm assembly (6) in the process that the repulsive disc (3) moves downwards so as to play a role in buffering.
2. The compact electromagnetic repulsion operation mechanism according to claim 1,
the upper coil panel component (2) and the lower coil panel component (4) respectively comprise a steel coil panel and copper wires wound on the steel coil panel.
3. The compact electromagnetic repulsion operation mechanism according to claim 2,
a guide sleeve which is used for the pull rod (1) to pass through and is suitable for guiding the pull rod (1) to lift is arranged on one steel coil disc.
4. The compact electromagnetic repulsion operation mechanism according to claim 1,
the repulsion disc (3) is a copper disc.
5. The compact electromagnetic repulsion operation mechanism according to claim 1,
the spring type double-stable mechanism (8) is connected with one end of the rocker arm assembly (6), keeps a compressed state and is suitable for providing a holding force required by a closing state and an opening state for the repulsion plate (3).
6. The compact electromagnetic repulsion operation mechanism according to claim 5, characterized in that,
the switching-on mechanism further comprises a switching-on spring assembly (9), wherein the switching-on spring assembly (9) is positioned above the other end of the rocker arm assembly (6) and is suitable for being abutted against the other end of the rocker arm assembly (6) in the switching-off process; wherein the content of the first and second substances,
in the brake opening process, the hydraulic buffer (5) is in contact with the rocker arm assembly (6) before the closing spring assembly (9).
7. The compact electromagnetic repulsion operation mechanism according to claim 6,
the rocker arm assembly (6) comprises a pull rod rocker arm (61), a hydraulic buffer collision arm (62), a closing spring assembly collision arm (63) and a bistable rocker arm (64) which are fixedly sleeved on the rotating shaft (10) respectively; wherein the content of the first and second substances,
the pull rod rocker arm (61) is hinged with the pull rod (1);
the hydraulic buffer collision arm (62) is adapted to collide with the hydraulic buffer (5) during the descent of the repulsive disc (3);
the closing spring assembly collision arm (63) is suitable for colliding with the closing spring assembly (9) in the descending process of the repulsion plate (3);
the bistable rocker arm (64) is connected with the spring bistable mechanism (8).
8. The compact electromagnetic repulsion operation mechanism according to claim 7,
the rotating shaft (10) is of a milled flat groove structure;
and/or a tightening screw is in threaded connection with each of the pull rod rocker arm (61), the hydraulic buffer collision arm (62), the closing spring assembly collision arm (63) and the bistable rocker arm (64), and the head of the tightening screw is abutted against the rotating shaft (10);
and/or the fixing body comprises at least one hoop (7), and the rotating shaft (10) is rotatably arranged in the hoop (7).
9. The compact electromagnetic repulsion operation mechanism according to claim 1,
the upper section of the pull rod (1) is an insulating rod, and the lower section of the pull rod is a metal rod.
10. A three-phase switch is characterized in that,
the compact electromagnetic repulsion force operating mechanism comprises three compact electromagnetic repulsion force operating mechanisms according to any claim 1-9, and rotating shafts (10) of the three compact electromagnetic repulsion force operating mechanisms are linked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110923226.9A CN113675047A (en) | 2021-08-12 | 2021-08-12 | Compact electromagnetic repulsion force operating mechanism and three-phase switch using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110923226.9A CN113675047A (en) | 2021-08-12 | 2021-08-12 | Compact electromagnetic repulsion force operating mechanism and three-phase switch using same |
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| CN113675047A true CN113675047A (en) | 2021-11-19 |
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| CN202110923226.9A Pending CN113675047A (en) | 2021-08-12 | 2021-08-12 | Compact electromagnetic repulsion force operating mechanism and three-phase switch using same |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2222399Y (en) * | 1994-12-28 | 1996-03-13 | 西安高压开关厂 | Three-phase mechanical coupled knob type circuit breaker |
| JP2006196317A (en) * | 2005-01-13 | 2006-07-27 | Toshiba Corp | Vacuum interrupting device |
| CN111696823A (en) * | 2020-07-10 | 2020-09-22 | 常州博瑞电力自动化设备有限公司 | Synchronous linked fast switch |
| CN112071723A (en) * | 2020-07-21 | 2020-12-11 | 西安交通大学 | Permanent magnet and repulsion force combined quick switch operating mechanism |
-
2021
- 2021-08-12 CN CN202110923226.9A patent/CN113675047A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2222399Y (en) * | 1994-12-28 | 1996-03-13 | 西安高压开关厂 | Three-phase mechanical coupled knob type circuit breaker |
| JP2006196317A (en) * | 2005-01-13 | 2006-07-27 | Toshiba Corp | Vacuum interrupting device |
| CN111696823A (en) * | 2020-07-10 | 2020-09-22 | 常州博瑞电力自动化设备有限公司 | Synchronous linked fast switch |
| CN112071723A (en) * | 2020-07-21 | 2020-12-11 | 西安交通大学 | Permanent magnet and repulsion force combined quick switch operating mechanism |
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Application publication date: 20211119 |