CN120637151A - Circuit breaker with opening and closing drive mechanism - Google Patents
Circuit breaker with opening and closing drive mechanismInfo
- Publication number
- CN120637151A CN120637151A CN202510980758.4A CN202510980758A CN120637151A CN 120637151 A CN120637151 A CN 120637151A CN 202510980758 A CN202510980758 A CN 202510980758A CN 120637151 A CN120637151 A CN 120637151A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- driving
- rod
- assembly
- driving rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- H01H33/666—Operating arrangements
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a circuit breaker with an opening and closing brake driving mechanism, which relates to the technical field of circuit breakers and comprises a box body, an insulating cylinder, a vacuum arc extinguishing chamber, a contact assembly, a driving assembly, a buffer assembly and a compensation assembly, wherein the driving assembly comprises a driving rod which is in sliding connection with the box body and is used for driving the contact assembly to divide or sum, the buffer assembly comprises a supporting block which is positioned in the box body and is in sliding connection with the driving rod, the driving rod is in sliding connection with the supporting block through a push plate, an air cylinder is fixed in the supporting block and is used for buffering the rapid sliding of the driving rod, the compensation assembly comprises an adjusting cylinder which is fixedly connected with the air cylinder, the adjusting cylinder is connected with the compensation cylinder through an air pipe, and an air hole is formed in the adjusting cylinder.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a circuit breaker with an opening and closing driving mechanism.
Background
The circuit breaker is a mechanical switching device which can switch on and off the normal current of the bearing line and can switch on and off the bearing current under the specified abnormal circuit condition and within a certain time. When serious overload or short circuit, undervoltage and other faults occur, the circuit can be automatically cut off, the functions of the circuit are equivalent to the combination of a fuse type switch, an over-under-heating relay and the like, and parts are generally not required to be changed after fault current is disconnected, so that the circuit has been widely applied.
The outdoor vacuum circuit breaker generally comprises a mechanism box body and an insulating cylinder at the top end of the mechanism box body, wherein a vacuum arc extinguishing chamber is arranged in the insulating cylinder, a fixed contact and a moving contact are correspondingly arranged in the vacuum arc extinguishing chamber, the fixed contact and the moving contact are used for being respectively connected with a power supply outlet wire and a load outlet wire, a transmission mechanism, an operating mechanism and other devices are arranged in the mechanism box body and extend into the insulating cylinder through an insulating pull rod, and are used for driving the moving contact to make on-off movement, in the process, a spring energy storage mechanism stores energy and is used for driving the transmission mechanism, so that the switching-on action is completed, but the spring energy storage mechanism is easy to enable the transmission mechanism to drive the moving contact to impact the fixed contact when the spring energy storage mechanism does not have certain buffering after the elastic force is released, abrasion of the contacts is caused, poor contact is caused, meanwhile, elastic fatigue can occur after the spring energy storage mechanism is used for a long time, the transmission of the transmission mechanism is not in place, the contact state between the contacts is poor, the contact state is caused, the problem of poor contact is caused, and the safety problem is easy to occur.
Therefore, the invention provides a breaker with an opening and closing driving mechanism, which solves the problems.
Disclosure of Invention
The invention mainly aims to provide a breaker with an opening and closing gate driving mechanism, which can effectively solve the technical problems in the background technology.
The technical scheme adopted by the invention is that the breaker comprises a box body, an insulating cylinder, a vacuum arc-extinguishing chamber, a contact assembly and a driving assembly, wherein the driving assembly comprises a driving rod which is in sliding connection with the box body and is used for driving the contact assembly to separate or sum;
The buffer assembly comprises a supporting block which is positioned in the box body and is in sliding connection with the driving rod, the driving rod is in sliding connection with the supporting block through a push plate, and an air cylinder is fixed in the supporting block and used for buffering the rapid sliding of the driving rod;
The compensation assembly comprises an adjusting cylinder fixedly connected with the air cylinder, the adjusting cylinder is connected with the compensation cylinder through an air pipe, a plurality of groups of circumferentially distributed air guide holes are formed in the adjusting cylinder, and when the driving rod slides, air in the air cylinder is extruded into the compensation cylinder through the air guide holes to dynamically compensate and buffer the sliding of the driving rod.
Preferably, the push plate is located between the adjusting cylinder and the compensating cylinder, a push rod in contact with the push plate is connected in the air cylinder in a sliding manner, and a pressing plate in sliding connection with the air cylinder is fixed on the push rod.
Preferably, the compensation component comprises an adjusting block which is in sliding connection with the adjusting cylinder, the adjusting block is fixedly connected with the push plate through an auxiliary rod, and a plurality of air guide grooves which are communicated with the air guide holes are formed in the adjusting block.
Preferably, the compensating cylinder is slidably connected with two piston plates, the piston plates are fixedly connected with adjusting rods, the two adjusting rods are slidably connected, and an elastic piece is arranged between the compensating cylinder and the piston plates.
Preferably, the diameter of the air guide groove is larger than that of the air guide holes, and the diameters of the plurality of groups of air guide holes are sequentially increased towards the direction approaching the air cylinder.
Preferably, inert gas is filled in the inflator, and a connecting port of the gas pipe and the compensation cylinder is positioned between the two piston plates.
Preferably, the driving assembly comprises a plurality of swing rods which correspond to the insulating cylinders and are hinged to the driving rods, the insulating rods which are connected with the insulating cylinders in a sliding mode are hinged to the swing rods, and the driving rods are provided with spring energy storage assemblies which are located in the box body and used for storing energy for rapid sliding of the driving rods.
Preferably, the contact assembly comprises a fixed contact positioned in the vacuum arc-extinguishing chamber, the insulating rod stretches into the vacuum arc-extinguishing chamber and is fixed with a moving contact, and the insulating rod is sleeved with a corrugated pipe.
Preferably, an upper wiring terminal is fixed at one end of the insulating cylinder far away from the box body, and a lower wiring terminal is fixed at the middle part of the insulating cylinder.
Preferably, a control assembly which is in sliding connection with the driving rod is fixed in the box body and is used for controlling the release and energy storage of the spring energy storage assembly.
The invention has the technical effects and advantages that:
According to the invention, through the linkage arrangement of the air cylinder, the push plate, the regulating block, the compensation cylinder and the piston plate, inert gas in the air cylinder is extruded when the driving rod slides rapidly, so that in the process that the air guide holes with different diameters are communicated with the air guide groove, a certain buffering effect can be achieved on the sliding of the driving rod, the piston plate is extruded through the inert gas when the driving rod slides in place, the regulating rod compensates the sliding of the driving rod to a certain extent, the driving rod is ensured to slide in place and also to buffer and compensate the sliding of the driving rod dynamically, the static contact and the moving contact are enabled to be more stable in contact, the normal running state is ensured, and the service life and the safety effect of the device are further improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the overall structure of the present invention;
FIG. 3 is a cross-sectional view of another perspective of the overall structure of the present invention;
FIG. 4 is a schematic view of a buffer assembly according to the present invention;
FIG. 5 is a cross-sectional view of the structure of the cushioning assembly of the present invention;
FIG. 6 is an expanded schematic view of the structure of the cushioning and compensating assemblies of the present invention;
FIG. 7 is an expanded schematic view of the structure of the compensation assembly of the present invention.
In the figure, 1, a box body, 2, an insulating cylinder, 3, a vacuum arc-extinguishing chamber;
4. A contact assembly; 401, a fixed contact, 402, a movable contact, 403 and a corrugated pipe;
5. The device comprises a driving assembly, a driving rod, 502, a swinging rod, 503 and an insulating rod;
6. the device comprises a buffer component, a supporting block, 602, a push plate, 603, an air cylinder, 604, a push rod, 605 and a pressing plate;
7. Compensating component 701, adjusting cylinder 702, air pipe 703, compensating cylinder 704, air hole 705, adjusting block 706, auxiliary rod 707, air guide groove 708, piston plate 709, adjusting rod 710, elastic piece 711, inert gas;
8. spring energy storage component 9, upper wiring terminal 10, lower wiring terminal 11 and control component.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1 to 3, the embodiment provides a circuit breaker with a switching-on and switching-off driving mechanism, which comprises a box body 1, an insulating cylinder 2, a vacuum arc extinguishing chamber 3 and a contact assembly 4, and further comprises a driving assembly 5, wherein the driving assembly 5 comprises a driving rod 501 which is slidably connected with the box body 1 and is used for driving the contact assembly 4 to divide or sum, the driving assembly 5 comprises a plurality of swinging rods 502 which correspond to the insulating cylinder 2 and are hinged with the driving rod 501, the swinging rods 502 are hinged with insulating rods 503 which are slidably connected with the insulating cylinder 2, and the driving rod 501 is provided with a spring energy storage assembly 8 which is positioned in the box body 1 and is used for storing energy for rapid sliding of the driving rod 501.
The contact assembly 4 comprises a fixed contact 401 positioned in the vacuum arc-extinguishing chamber 3, an insulating rod 503 stretches into the vacuum arc-extinguishing chamber 3 and is fixedly provided with a moving contact 402, a corrugated pipe 403 is sleeved on the insulating rod 503, an upper wiring end 9 is fixed at one end of the insulating cylinder 2 far away from the box body 1, a lower wiring end 10 is fixed at the middle part of the insulating cylinder 2, and a control assembly 11 which is in sliding connection with the driving rod 501 is fixed in the box body 1 and used for controlling the release and energy storage of the spring energy storage assembly 8.
When the switch-on device is in practical use, firstly, the upper wiring end 9 and the lower wiring end 10 are connected in a circuit manner, when the switch-on is needed, the spring energy storage component 8 is controlled by the control component 11 to release elastic energy, the control component 11 and the spring energy storage component 8 are of the prior art, specific structures and connection modes are not repeated, at this moment, the spring energy storage component 8 drives the driving rod 501 to slide along the box body 1 under the action of elastic force, the driving rod 501 drives the insulating rod 503 to slide upwards along the insulating cylinder 2 through the swinging rod 502, the insulating rod 503 drives the moving contact 402 to slide along the vacuum arc-extinguishing chamber 3 towards the direction close to the fixed contact 401, the bellows 403 positioned in the vacuum arc-extinguishing chamber 3 stretches out and draws back, the vacuum degree in the vacuum arc-extinguishing chamber 3 can be guaranteed, better arc-extinguishing effect is achieved, and when the spring energy storage component 8 is released, at this moment, the moving contact 402 and the fixed contact 401 are contacted to complete the switch-on action, only the driving rod 501 is required to slide reversely through the control component 11, the switch-on action can be completed, and at this moment, the driving rod 501 can drive the spring energy storage component 8 to store the switch-on action to complete the switch-on rapidly, and the switch-on action is convenient to complete.
Example two
In the use process, the problem that the abrasion between the fixed contact 401 and the moving contact 402 is increased and the poor contact is easy to occur because the force impact is overlarge and the fixed contact 401 is not buffered to a certain extent in the process of releasing the elastic force of the spring is found, and meanwhile, the problem that the elastic fatigue is caused when the spring works for a long time, and the problem that the fixed contact 401 and the moving contact 402 are not contacted in place is easy to occur because the spring does not compensate to a certain extent is found, so that the device is further improved based on the embodiment.
As shown in fig. 2 to 7, the buffer assembly 6 includes a supporting block 601 located inside the case 1 and slidably connected to the driving rod 501, the driving rod 501 is slidably connected to the supporting block 601 through a push plate 602, and an air cylinder 603 is fixed in the supporting block 601 for buffering the rapid sliding of the driving rod 501;
The compensating assembly 7 comprises an adjusting cylinder 701 fixedly connected with an air cylinder 603, wherein the adjusting cylinder 701 is connected with the compensating cylinder 703 through an air pipe 702, a plurality of groups of circumferentially distributed air guide holes 704 are formed in the adjusting cylinder 701, and when the driving rod 501 slides, air in the air cylinder 603 is extruded into the compensating cylinder 703 through the air guide holes 704 to dynamically compensate and buffer the sliding of the driving rod 501.
The push plate 602 is located between the adjusting cylinder 701 and the compensating cylinder 703, a push rod 604 contacting the push plate 602 is slidably connected to the air cylinder 603, and a pressing plate 605 slidably connected to the air cylinder 603 is fixed to the push rod 604.
The compensation component 7 comprises an adjusting block 705 which is slidably connected with the adjusting cylinder 701, the adjusting block 705 is fixedly connected with the pressing plate 605 through an auxiliary rod 706, and a plurality of air guide grooves 707 communicated with the air guide holes 704 are formed in the adjusting block 705.
The compensating cylinder 703 is slidably connected with two piston plates 708, the piston plates 708 are fixedly connected with adjusting rods 709, the two adjusting rods 709 are slidably connected, and an elastic piece 710 is arranged between the compensating cylinder 703 and the piston plates 708.
The diameter of the air guide groove 707 is larger than the diameter of the air guide holes 704, and the diameters of the plurality of sets of air guide holes 704 sequentially increase in a direction approaching the air cylinder 603.
The inflator 603 is filled with inert gas 711, and the connection port between the gas tube 702 and the compensator 703 is located between the two piston plates 708.
In actual use, when the spring energy storage component 8 drives the driving rod 501 to slide rapidly, and the spring is in a normal state, the driving rod 501 drives the push plate 602 to slide along the supporting block 601, so that the push plate 602 is gradually contacted with the push rod 604, meanwhile, under the action of the elastic piece 710, the elastic piece 710 drives the two adjusting rods 709 to slide along the compensating cylinder 703 through the piston plate 708, so that one adjusting rod 709 is always contacted with the push plate 602, when the push plate 602 contacts with the push rod 604, the push plate 602 pushes the push rod 604 to drive the pressing plate 605 to slide rapidly along the air cylinder 603, the pressing plate 605 drives the adjusting block 705 to slide rapidly along the adjusting cylinder 701 through the auxiliary rod 706, the diameter of the adjusting cylinder 701 is far smaller than that of the air cylinder 603, inert gas 711 positioned between the two piston plates 708 is filled in the compensating cylinder 703, at this time, the air guide groove 707 on the adjusting block 705 is sequentially communicated with the air guide hole 704, and a part of inert gas 711 is extruded into the compensating cylinder 703 through the air guide groove 707 and the air guide hole 704 by the air pipe 702, at this time, because the spring energy storage component 8 is in a normal state, the air guide groove 707 on the adjusting block 705 is rapidly communicated with the air guide hole 704 with the smallest diameter, and the diameter of the air guide hole 704 is sequentially increased towards the direction of the air cylinder 603, so that the amount of inert gas 711 extruded into the compensating cylinder 703 by the air pipe 702 is small, at this time, the buffer resistance provided by the air cylinder 603 to the sliding of the driving rod 501 is very large, thereby playing a certain buffer effect to the sliding of the driving rod 501 after the elastic force of the spring energy storage component 8 is released, avoiding the problem of collision and accelerated abrasion of the fixed contact 401 and the moving contact 402 and avoiding poor contact.
When spring energy storage assembly 8 is in certain elastic fatigue and leads to the fact that fixed contact 401 and moving contact 402 are not in place, at the moment, driving rod 501 slides to drive push plate 602 to slide along supporting block 601, so that push plate 602 is gradually contacted with push rod 604, meanwhile, under the action of elastic piece 710, elastic piece 710 drives two adjusting rods 709 to slide along compensating cylinder 703 through piston plate 708, so that one adjusting rod 709 is always contacted with push plate 602, after push plate 602 is contacted with push rod 604, push plate 602 pushes push rod 604 to drive pressure plate 605 to slide along air cylinder 603, pressure plate 605 drives adjusting block 705 to slide along adjusting cylinder 701 through auxiliary rod 706, and air guide groove 707 on adjusting block 705 is sequentially communicated with air guide hole 704.
At this time, since the air guide groove 707 on the adjusting block 705 cannot be in contact with the air guide hole 704 with the smallest diameter, the air guide groove 707 is firstly in contact with the air guide hole 704 with the largest diameter, so that a large amount of inert gas 711 in the air cylinder 603 is extruded into the compensating cylinder 703 through the air pipe 702, and since the connecting port of the air pipe 702 and the compensating cylinder 703 is located between the two piston plates 708, the inert gas 711 is filled between the two piston plates 708, and since the two adjusting rods 709 are in sliding connection, the inert gas 711 pushes one of the piston plates 708 to drive one adjusting rod 709 to slide along the other adjusting rod 709, so that one adjusting rod 709 presses the push plate 602 under the action of the inert gas 711, and when elastic fatigue occurs in the spring energy storage assembly 8, the sliding of the driving rod 501 can be compensated to a certain extent, so that the driving rod 501 can stably slide to a preset position, the fixed contact 401 and the moving contact 402 are contacted in place, a good closing environment is ensured, the buffering and the pressure compensation can be dynamically performed in the sliding process of the driving rod 501, and the situation that the moving contact 401 and the moving contact 402 are contacted in place is avoided, and abrasion is avoided.
In summary, through the linkage setting of inflator 603, push pedal 602, regulating block 705, compensating cylinder 703 and piston plate 708, through the inert gas 711 in the extrusion inflator 603 when actuating lever 501 slides fast, thereby in the in-process that different diameter air vent 704 and air duct 707 communicate, not only can play certain cushioning effect to actuating lever 501 slip, also can be when actuating lever 501 slides not put in place through inert gas 711 extrusion piston plate 708, thereby make adjusting lever 709 carry out certain compensation to the slip of actuating lever 501, guarantee that actuating lever 501 slides and just also can carry out certain buffering, and the dynamic is buffering and compensating to the slip of actuating lever 501, make stationary contact 401 and moving contact 402 contact and make more stable, guarantee normal running state, further improve the life and the safe effect of equipment.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The breaker with the opening and closing gate driving mechanism comprises a box body (1), an insulating cylinder (2), a vacuum arc-extinguishing chamber (3) and a contact assembly (4), and is characterized by further comprising a driving assembly (5), a driving rod (501) and a switching mechanism, wherein the driving assembly comprises a driving rod (501) which is in sliding connection with the box body (1) and is used for driving the contact assembly (4) to separate or sum;
The buffer assembly (6) comprises a supporting block (601) which is in sliding connection with the driving rod (501), the driving rod (501) is in sliding connection with the supporting block (601) through a push plate (602), and an air cylinder (603) is fixed in the supporting block (601) and is used for buffering the rapid sliding of the driving rod (501);
The compensating component (7) comprises an adjusting cylinder (701) fixedly connected with the air cylinder (603), the adjusting cylinder (701) is connected with the compensating cylinder (703) through an air pipe (702), a plurality of groups of circumferentially distributed air guide holes (704) are formed in the adjusting cylinder (701), and when the driving rod (501) slides, air in the air cylinder (603) is extruded into the compensating cylinder (703) through the air guide holes (704), so that the driving rod (501) slides to be dynamically compensated and buffered.
2. The breaker of claim 1, wherein the push plate (602) is located between the adjusting cylinder (701) and the compensating cylinder (703), a push rod (604) contacting with the push plate (602) is slidably connected to the cylinder (603), and a pressing plate (605) slidably connected to the cylinder (603) is fixed to the push rod (604).
3. The breaker of opening and closing brake driving mechanism according to claim 2, wherein the compensation assembly (7) comprises an adjusting block (705) which is slidably connected with the adjusting cylinder (701), the adjusting block (705) is fixedly connected with the push plate (602) through an auxiliary rod (706), and a plurality of air guide grooves (707) which are communicated with the air guide holes (704) are formed in the adjusting block (705).
4. The breaker of the opening and closing brake driving mechanism according to claim 3, wherein the compensation cylinder (703) is slidably connected with two piston plates (708), the piston plates (708) are fixedly connected with adjusting rods (709), the two adjusting rods (709) are slidably connected, and an elastic piece (710) is arranged between the compensation cylinder (703) and the piston plates (708).
5. The breaker of claim 4, wherein the diameter of the air guide groove (707) is larger than the diameter of the air guide holes (704), and the diameters of the plurality of groups of air guide holes (704) are sequentially increased in a direction approaching the air cylinder (603).
6. The breaker of claim 5, wherein inert gas (711) is filled in the inflator (603), and a connection port between the gas pipe (702) and the compensation cylinder (703) is located between the two piston plates (708).
7. The breaker of opening and closing brake driving mechanism according to claim 6, wherein the driving assembly (5) comprises a plurality of swinging rods (502) corresponding to the insulating cylinder (2) and hinged to the driving rod (501), the swinging rods (502) are hinged to insulating rods (503) which are slidably connected with the insulating cylinder (2), and the driving rod (501) is provided with a spring energy storage assembly (8) which is positioned in the box body (1) and is used for storing energy for rapid sliding of the driving rod (501).
8. The breaker of the opening and closing brake driving mechanism according to claim 7, wherein the contact assembly (4) comprises a fixed contact (401) positioned in the vacuum arc-extinguishing chamber (3), the insulating rod (503) stretches into the vacuum arc-extinguishing chamber (3) and is fixedly provided with a moving contact (402), and a corrugated pipe (403) is sleeved on the insulating rod (503).
9. The breaker of an opening and closing brake driving mechanism according to claim 8, wherein an upper wiring terminal (9) is fixed at one end of the insulating cylinder (2) away from the box body (1), and a lower wiring terminal (10) is fixed at the middle part of the insulating cylinder (2).
10. The breaker of the opening and closing brake driving mechanism according to claim 9, wherein a control assembly (11) which is connected with the driving rod (501) in a sliding manner is fixed in the box body (1) and is used for controlling the release and energy storage of the spring energy storage assembly (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510980758.4A CN120637151B (en) | 2025-07-16 | A circuit breaker with opening and closing drive mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510980758.4A CN120637151B (en) | 2025-07-16 | A circuit breaker with opening and closing drive mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN120637151A true CN120637151A (en) | 2025-09-12 |
| CN120637151B CN120637151B (en) | 2026-03-31 |
Family
ID=
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201866152U (en) * | 2010-11-25 | 2011-06-15 | 北京双杰电气股份有限公司 | Gas damper for circuit breaker |
| CN208331099U (en) * | 2018-04-19 | 2019-01-04 | 卫德义 | Damper |
| CN117976463A (en) * | 2024-03-06 | 2024-05-03 | 博方电气有限公司 | High-power quick operating device of switch equipment |
| CN119092356A (en) * | 2024-10-25 | 2024-12-06 | 广东电网有限责任公司广州供电局 | Closing holding device and vacuum circuit breaker |
| CN222995338U (en) * | 2024-08-28 | 2025-06-17 | 河南平高通用电气有限公司 | Circuit breaker |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201866152U (en) * | 2010-11-25 | 2011-06-15 | 北京双杰电气股份有限公司 | Gas damper for circuit breaker |
| CN208331099U (en) * | 2018-04-19 | 2019-01-04 | 卫德义 | Damper |
| CN117976463A (en) * | 2024-03-06 | 2024-05-03 | 博方电气有限公司 | High-power quick operating device of switch equipment |
| CN222995338U (en) * | 2024-08-28 | 2025-06-17 | 河南平高通用电气有限公司 | Circuit breaker |
| CN119092356A (en) * | 2024-10-25 | 2024-12-06 | 广东电网有限责任公司广州供电局 | Closing holding device and vacuum circuit breaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100501893C (en) | Method of current interruption using buffer type gas circuit breaker and buffer type gas circuit breaker thereof | |
| CA2069690A1 (en) | Medium voltage circuit breaker with reduced operating energy | |
| CN115603217B (en) | Load switch and environment-friendly gas-insulated combined electrical appliance ring main unit | |
| CN112927982B (en) | Spring retaining device and working method capable of reducing closing and opening rebound of rapid vacuum switch | |
| CN201788888U (en) | Single-phase vacuum breaker with double arc-extinguishing chambers for controlling transmission mode | |
| KR101395151B1 (en) | Spring operation device for circuit breaker and circuit breaker | |
| CN120637151B (en) | A circuit breaker with opening and closing drive mechanism | |
| CN120637151A (en) | Circuit breaker with opening and closing drive mechanism | |
| JPH09147701A (en) | Vacuum switchgear | |
| CN121191945A (en) | Transfer branch structures, load switches and ring main units used for vacuum parallel interruption | |
| CN118571722B (en) | A separation arc extinguishing device and low-voltage cabinet for smart grid power distribution | |
| CN212676174U (en) | Novel direct-current high-speed circuit breaker | |
| CN212113572U (en) | Shielding arc-extinguishing device of contactor contact | |
| CN114429881B (en) | A vacuum circuit breaker | |
| CN213879270U (en) | A current limiting DC circuit breaker | |
| CN111489920B (en) | Method and device for shielding and arc extinguishing of contactor contact | |
| JP2011076758A (en) | Switch | |
| CN113936956A (en) | Distribution network vacuum circuit breaking device based on below 10kV and control method | |
| US2753424A (en) | Interrupting device employing a controller for regulating contact closing speeds | |
| US2734971A (en) | Circuit interrupters | |
| CN222720326U (en) | Circuit breaker protection against electric shock protection architecture | |
| CN222995338U (en) | Circuit breaker | |
| CN224096621U (en) | A lever-driven vacuum circuit breaker | |
| CN211700119U (en) | Transmission device for high-voltage circuit breaker | |
| CN220233829U (en) | Pressure relief device of high-voltage switch cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |