CN106449203B - Double-power supply uninterrupted very-fast switching device - Google Patents
Double-power supply uninterrupted very-fast switching device Download PDFInfo
- Publication number
- CN106449203B CN106449203B CN201610975729.XA CN201610975729A CN106449203B CN 106449203 B CN106449203 B CN 106449203B CN 201610975729 A CN201610975729 A CN 201610975729A CN 106449203 B CN106449203 B CN 106449203B
- Authority
- CN
- China
- Prior art keywords
- switching device
- power supply
- coil
- force
- transmission 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.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 100
- 230000007246 mechanism Effects 0.000 claims abstract description 74
- 230000003068 static effect Effects 0.000 claims abstract description 62
- 230000033001 locomotion Effects 0.000 claims abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 47
- 238000005192 partition Methods 0.000 claims description 30
- 230000009977 dual effect Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims 4
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000002457 bidirectional effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/28—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention provides a very fast switching device without power failure for double power supplies, which comprises: the device comprises a shell, a transmission rod, an electromagnetic driving mechanism and a force retaining mechanism, wherein the electromagnetic driving mechanism and the force retaining mechanism are arranged in the shell; the transmission rod can slidably penetrate through the shell, the first end of the transmission rod is used for being connected with a moving contact of the main power supply switching device, and the second end of the transmission rod is used for being connected with a moving contact of the standby power supply switching device; the electromagnetic driving mechanism is connected with the transmission rod and used for generating electromagnetic force after current is introduced, and the electromagnetic force drives the transmission rod to move towards the main power supply switching device or the standby power supply switching device so as to enable a moving contact of the main power supply switching device or the standby power supply switching device to be in contact with a fixed contact; the force maintaining mechanism is connected with the transmission rod and used for applying a maintaining force for maintaining the contact state of the moving contact and the static contact of the main power supply switching device and the standby power supply switching device to the transmission rod. The invention can greatly shorten the switching time, and has high electromagnetic energy utilization rate, low electromagnetic force attenuation speed and longer motion stroke.
Description
Technical Field
The invention relates to the technical field of switches, in particular to a double-power-supply uninterrupted very-fast switching device.
Background
In order to meet the needs of economic and scientific development of China, the construction of a national large power grid enters a speedway in recent years, and a national power grid company constructs a strong power transmission network taking an extra-high voltage alternating current and direct current transmission line as a backbone network frame. According to the thirteen-five power grid planning, the final goal of power grid construction is to improve the quality of electric energy of the end user side, and the construction of a medium-low voltage power distribution network is emphasized more. With the development of politics, economy and science and technology in China, the number of important and key load users is increasing day by day, for example, every department of central government, aerospace and military departments, various high-tech precision industrial parks, large hospitals, bank securities and the like, the sensitive load at the tail end of a power grid is also rapidly increased, and the sensitive load provides higher requirements for the quality of electric energy. The voltage sag and the short-time power failure are main factors influencing the power quality at present, and the power supply voltage sag of several cycles seriously influences the normal operation of user equipment, so that uninterrupted power supply must be realized, continuous uninterrupted power supply is ensured, and the transient power quality problems such as the voltage sag and the short-time power failure are not allowed to occur.
At present, in order to improve power supply reliability and power quality, a dual-power supply mode is generally adopted. In order to achieve uninterrupted power supply, a fast switching device is usually used to switch a load user from a faulty bus to a non-faulty bus, requiring that a sensitive load be switched from a faulty power supply to a non-faulty power supply within 10 ms. The core element of the fast switching device is a switch, and the switching speed of the fast switching device directly affects the transient power quality. In general, a fast switching device using a general mechanical switch as an element has a switching time of 100ms to 200ms, which corresponds to 5 to 10 cycles. However, although a fast switching device using a Solid State Transfer Switch (SSTS) as a core element is a power electronic transfer switch composed of thyristors, the fast switching device can meet the strict requirements of sensitive and critical loads on power supply reliability and power quality, during normal operation, the thyristors can flow large load current to generate large heat and loss, and a certain cooling measure must be taken to increase the complexity of the system and the operation and maintenance cost, reduce the efficiency and reliability of the device, and meanwhile, the fast switching device has high comprehensive cost, which is not beneficial to large-area popularization.
At present, the rapid vacuum switch designed based on the bidirectional electromagnetic repulsion mechanism has the advantages of simple structure, high opening and closing speed, small on-state loss and wider application. The bidirectional electromagnetic repulsion mechanism utilizes the eddy current principle to enable the metal disc and the coil to generate electromagnetic repulsion so as to drive the moving contact to move to complete the opening and closing action. Specifically, as shown in fig. 1, when a switching-off operation is performed, when a pulse current is applied to the switching-off coil 27, an eddy current is induced in the metal disc 28, an electromagnetic repulsion force is generated between the eddy current and the switching-off coil 27 after the current is applied, the electromagnetic repulsion force drives the metal disc 28 to move downward rapidly, the moving conductive rod 24 is driven to move downward, and the moving contact 22 is further driven to move downward in a switching-off manner, so that the moving contact 22 is separated from the static contact 21; when the switching-on operation is performed, a pulse current is applied to the switching-on coil 29, an eddy current is induced in the metal disc 18, an electromagnetic repulsion force is generated between the eddy current and the switching-on coil 29 after the current is applied, the electromagnetic repulsion force drives the metal disc 28 to move upward rapidly, the movable conducting rod 24 is driven to move upward, and then the movable contact 22 is driven to perform the switching-on motion upward, so that the movable contact 22 is in contact with the fixed contact 21. The belleville springs 26 may hold the moving contacts in either the open or closed position.
The metal disc-coil type bidirectional electromagnetic repulsion mechanism is suitable for a short-stroke single-phase opening and closing device with an opening distance of 1-3 mm, although the opening time is shortened compared with that of the traditional operating mechanism, the electromagnetic energy utilization rate is low, the induced electromagnetic repulsion force is small and the attenuation is fast, and the metal disc-coil type bidirectional electromagnetic repulsion mechanism is not suitable for an opening and closing device with a movement stroke of more than ten millimeters. Secondly, the bidirectional electromagnetic repulsion mechanism is kept at the opening or closing position by adopting the disc spring 26, and the bouncing is easy to generate to influence the opening and closing of the device.
Disclosure of Invention
In view of this, the invention provides an extra-fast switching device with a double power supplies uninterrupted, and aims to solve the problems that in the prior art, a fast switching device is low in switching-on and switching-off speed and short in movement stroke.
In one aspect, the present invention provides a fast switching device with dual power supplies without power outage, including: the device comprises a shell, a transmission rod, an electromagnetic driving mechanism and a force retaining mechanism, wherein the electromagnetic driving mechanism and the force retaining mechanism are arranged in the shell; the transmission rod can slidably penetrate through the shell, the first end of the transmission rod is used for being connected with a moving contact of the main power supply switching device, and the second end of the transmission rod is used for being connected with a moving contact of the standby power supply switching device; the electromagnetic driving mechanism is connected with the transmission rod and used for generating electromagnetic force after current is introduced, and the electromagnetic force drives the transmission rod to move towards the main power supply switching device or the standby power supply switching device so as to enable a moving contact of the main power supply switching device or the standby power supply switching device to be in contact with a fixed contact; the force retaining mechanism is connected with the transmission rod and used for applying retaining force to the transmission rod, and the retaining force enables the moving contacts and the static contacts of the main power supply switching device and the standby power supply switching device to be in a contact state.
Further, in the above-mentioned double-power-supply uninterrupted ultra-fast switching apparatus, the electromagnetic driving mechanism includes: the first static coil, the second static coil and the moving coil are arranged along the axial direction of the shell; the first static coil and the second static coil are both connected with the inner wall of the shell, a preset distance is reserved between the first static coil and the second static coil, the dynamic coil is sleeved and connected with the transmission rod, and the transmission rod is slidably arranged in the first static coil and the second static coil in a penetrating manner; the first static coil and the movable coil are used for generating repulsion force for enabling the transmission rod to move towards the main power supply opening and closing device after current is introduced; the second static coil and the moving coil are used for generating repulsion force for enabling the transmission rod to move towards the standby power supply switching device after current is introduced.
Further, in the above-mentioned duplicate supply uninterrupted power supply ultra-fast switching apparatus, the electromagnetic driving mechanism further includes: a superconducting coil; the superconducting coils are connected with the side wall of the shell, and the first static coil, the second static coil and the moving coil are all arranged in the superconducting coils; the superconducting coil is used for generating Lorentz electromagnetic force for accelerating the motion of the transmission rod after current is introduced.
Further, the above-mentioned duplicate supply uninterrupted power supply very fast switching apparatus further includes: a partition plate; the partition plate is connected with the inner wall of the shell and is used for dividing the shell into a first cavity and a second cavity; the electromagnetic driving mechanism is arranged in the first cavity, the force retaining mechanism is arranged in the second cavity, and the transmission rod slidably penetrates through the partition plate.
Furthermore, in the double-power-supply uninterrupted ultra-fast switching device, the first static coil is connected with the top wall of the shell, and the second static coil is connected with the partition plate.
Furthermore, in the uninterrupted fast switching device of the double power supplies, the partition plate is a magnetic yoke partition plate.
Further, in the above-mentioned duplicate supply uninterrupted power supply very fast switching apparatus, the force maintaining mechanism includes: an annular permanent magnet and an iron core; the permanent magnet is connected with the side wall of the shell, the transmission rod penetrates through and is connected with the iron core, and the iron core penetrates through the permanent magnet in a sliding manner; the permanent magnet, the iron core and the bottom wall of the shell form a first magnetic circuit, and the first magnetic circuit is used for applying a holding force for keeping a moving contact of the main power supply switching device in a contact state with a fixed contact to the iron core; the permanent magnet, the iron core and the partition plate form a second magnetic circuit, and the second magnetic circuit is used for applying a holding force for keeping a moving contact and a static contact of the standby power supply switching device in a contact state to the iron core.
Further, in the above-mentioned duplicate supply uninterrupted power supply very fast switching apparatus, the force maintaining mechanism further includes: a magnetic conductive ring; wherein, the magnetic conduction ring is sleeved between the permanent magnet and the iron core.
Furthermore, in the double-power-supply uninterrupted ultra-fast switching device, non-magnetic base plates are arranged between the permanent magnet and the bottom wall of the shell and between the permanent magnet and the partition plate.
Furthermore, in the uninterrupted fast switching device for dual power supplies, the shell is a magnetic yoke shell.
In the invention, the electromagnetic force generated by the electromagnetic driving mechanism after current is introduced drives the transmission rod to move so that the moving contact of the main power supply switching device or the standby power supply switching device is contacted with the fixed contact, thereby greatly shortening the switching time between the main power supply switching device and the standby power supply switching device, avoiding the switching delay, and the electromagnetic force of the electromagnetic driving mechanism is generated after current is introduced, so that the electromagnetic energy utilization rate is high, the maximum amplitude of the switching speed is accelerated, the electromagnetic force attenuation speed is slow, the movement stroke is longer, and the problems of slow switching-on and switching-off speed and short movement stroke of the rapid switching device in the prior art are solved; in addition, the force retaining mechanism enables the moving contact and the static contact of the main power supply switching device and the standby power supply switching device to be in a contact state by applying retaining force to the transmission rod, the performance of the retaining force is stable, and the normal work of the main power supply switching device or the standby power supply switching device can be effectively ensured.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of a two-way electromagnetic repulsion mechanism in the prior art;
fig. 2 is a schematic diagram illustrating a principle of a non-power-off fast switching device for dual power supplies according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a non-stop dual power supply very fast switching device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first use state of the uninterruptible power supply dual-power-supply very fast switching device according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram of a second use state of the uninterruptible power supply dual-power-supply very fast switching device according to the embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 3 to 5, preferred structures of the uninterruptible dual power supply ultra-fast switching device provided by the embodiment of the invention are shown. As shown in the figure, two ends of the dual-power-supply uninterrupted ultra-fast switching device are respectively connected with the main power supply opening and closing device 5 and the standby power supply opening and closing device 6, specifically, one end of the dual-power-supply uninterrupted ultra-fast switching device is connected with the moving contact 19 of the main power supply opening and closing device 5, and the other end is connected with the moving contact 18 of the standby power supply opening and closing device 6. When the main power supply switching device 5 breaks down, the double-power-supply uninterrupted very-fast switching device enables the moving contact 18 of the standby power supply switching device 6 to be in contact with the fixed contact 17, and then the standby power supply switching device 6 starts to work. When the main power supply switching device 5 returns to normal, the double-power-supply uninterrupted very-fast switching device enables the moving contact 18 and the static contact 17 of the standby power supply switching device 6 to be separated, and the moving contact 19 and the static contact 20 of the main power supply switching device 5 to be in contact, so that the main power supply switching device 5 and the standby power supply switching device 6 are switched without interruption.
As shown in the figure, the uninterrupted power supply and very fast switching device for the dual power supplies comprises: a housing 7, a transmission rod 16, an electromagnetic drive 2 and a force retention 3. Wherein the housing 7 is a housing made of a magnetic yoke, the transmission rod 16 slidably penetrates the housing 7, that is, the transmission rod 16 penetrates the housing 7, both ends of the transmission rod 16 protrude to the outside of the housing 7, and the transmission rod 16 is slidable left and right (with respect to fig. 4) in the housing 7. A first end of the transmission rod 16 is placed outside the casing 7 for connection to a movable contact 19 of the main power switching device 5. The second end of the driving rod 16 is also placed outside the casing 7, and the second end of the driving rod 16 is used for connecting with the movable contact 18 of the standby power supply switching device 6.
The electromagnetic driving mechanism 2 is arranged in the shell 7, the electromagnetic driving mechanism 2 is connected with the transmission rod 16, the electromagnetic driving mechanism 2 is used for generating electromagnetic force after current is introduced, the electromagnetic force drives the transmission rod 16 to move towards the main power switching device 5, so that a moving contact 19 of the main power switching device 5 is contacted with a static contact 20, and the work of the main power switching device 5 is realized; or, the electromagnetic driving mechanism 2 is used for driving the transmission rod 16 to move towards the standby power supply switching device 6, so that the movable contact 18 of the standby power supply switching device 6 is contacted with the fixed contact 17, and the standby power supply switching device 6 works. Specifically, the electromagnetic force may be electromagnetic attraction force or electromagnetic repulsion force. The double-power-supply uninterrupted ultra-fast switching device can be connected with a main-stream pulse power supply 1, and the main-stream pulse power supply 1 provides direct-current pulse current for an electromagnetic driving mechanism 2.
The force maintaining mechanism 3 is arranged in the shell 7, the force maintaining mechanism 3 is connected with the transmission rod 16, and the force maintaining mechanism 3 is used for exerting a maintaining force on the transmission rod 16, wherein the maintaining force enables the movable contact 19 and the fixed contact 20 of the main power supply switching device 5 to be in a contact state, and enables the movable contact 18 and the fixed contact 17 of the standby power supply switching device 6 to be in a contact state. Specifically, when the movable contact 19 of the main power switching device 5 is in contact with the fixed contact 20, the movable contact 19 of the main power switching device 5 is kept in contact with the fixed contact 20 by the holding force applied to the transmission rod 16 by the force holding mechanism 3; when the movable contact 18 of the standby power supply switching device 6 is in contact with the fixed contact 17, the force retaining mechanism 3 exerts a retaining force on the transmission rod 16 to keep the movable contact 18 of the standby power supply switching device 6 in a contact state with the fixed contact 17.
During specific implementation, both the electromagnetic driving mechanism 2 and the force maintaining mechanism 3 can be electrically connected with the control device, the control device controls the electromagnetic driving mechanism 2 to drive the transmission rod 16 to move leftwards or rightwards so as to realize that the moving contact of the main power source switching device 5 or the standby power source switching device 6 is contacted with the fixed contact, and the driving force maintaining mechanism 3 enables the moving contact of the main power source switching device 5 and the standby power source switching device 6 to be kept in a contact state with the fixed contact.
The working process is as follows: when the main power switching device 5 breaks down, the electromagnetic driving mechanism 2 generates electromagnetic force after pulse direct current is introduced, the electromagnetic force drives the transmission rod 16 to move leftwards, so that the movable contact 18 of the standby power switching device 6 is contacted with the fixed contact 17, the force maintaining mechanism 3 applies maintaining force to the transmission rod 16, so that the movable contact 18 of the standby power switching device 6 is kept in a contact state with the fixed contact 17, the standby power switching device 6 is switched on, namely, starts to work, and the main power switching device 5 is switched off. When the main power switching device 5 is restored to be normal, the electromagnetic driving mechanism 2 drives the transmission rod 16 to move rightwards by the electromagnetic force generated after the pulse direct current is introduced, so that the movable contact 18 and the fixed contact 17 of the standby power switching device 6 are separated, the movable contact 19 and the fixed contact 20 of the main power switching device 5 are contacted, the force maintaining mechanism 3 applies a maintaining force to the transmission rod 16, the movable contact 19 and the fixed contact 20 of the main power switching device 5 are kept in a contact state, the main power switching device 5 is conducted, namely starts to work, and the standby power switching device 6 is switched off.
It can be seen that, in this embodiment, the electromagnetic force generated by the electromagnetic driving mechanism 2 after the current is introduced drives the driving rod 16 to move, so that the moving contact of the main power source switching device 5 or the standby power source switching device 6 is in contact with the fixed contact, the switching time between the main power source switching device 5 and the standby power source switching device 6 can be greatly shortened, the switching delay is avoided, and the electromagnetic force of the electromagnetic driving mechanism 2 is generated after the current is introduced, so that the electromagnetic energy utilization rate is high, the maximum amplitude of the switching speed is increased, the electromagnetic force attenuation speed is slow, the movement stroke is long, and the problems of slow switching speed and short movement stroke of the fast switching device in the prior art are solved; in addition, the force applied by the force retaining mechanism 3 to the transmission rod 16 keeps the movable contacts and the fixed contacts of the main power source switching device 5 and the standby power source switching device 6 in a contact state, the performance of the retaining force is stable, and the normal operation of the main power source switching device 5 or the standby power source switching device 6 can be effectively ensured.
With continued reference to fig. 3-5, in the above-described embodiment, the electromagnetic drive mechanism 2 may include: a first stationary coil 8, a second stationary coil 15 and a moving coil 10. The first stationary coil 8 and the second stationary coil 15 are both disposed in the housing 7 along an axial direction of the housing 7 (a left-to-right direction in fig. 4). The first stationary coil 8 and the second stationary coil 15 are both connected to the inner wall of the housing 7, so that the first stationary coil 8 and the second stationary coil 15 are both held in a fixed state with respect to the housing 7. The first stationary coil 8 and the second stationary coil 15 have a predetermined distance therebetween, the moving coil 10 is disposed between the first stationary coil 8 and the second stationary coil 15, and the moving coil 10 is movable left and right (with respect to fig. 4) between the first stationary coil 8 and the second stationary coil 15. In the present embodiment, the first stationary coil 8 is provided near the standby power supply opening and closing device 6, and the second stationary coil 15 is provided near the main power supply opening and closing device 5. In specific implementation, the preset distance may be determined according to an actual situation, and this embodiment does not limit this.
The moving coil 10 is sleeved on the transmission rod 16, and the moving coil 10 is connected to the transmission rod 16, so that the left and right movement of the moving coil 10 drives the left and right movement of the transmission rod 16. The transmission rod 16 is slidably inserted through the first stationary coil 8 and the second stationary coil 15, specifically, the first stationary coil 8 and the second stationary coil 15 are both circular, the transmission rod 16 is inserted through the inside of the first stationary coil 8 and the inside of the second stationary coil 15, and the transmission rod 16 can slide left and right (with respect to fig. 4) inside the first stationary coil 8 and inside the second stationary coil 15.
After the first stationary coil 8 and the moving coil 10 are energized with current, an electromagnetic repulsion force may be generated, and an electromagnetic attraction force may also be generated, and the electromagnetic force may cause the driving rod 16 to move towards the main power switching device 5 regardless of the electromagnetic repulsion force or the electromagnetic attraction force. In the present embodiment, an example in which an electromagnetic repulsive force for moving the transmission lever 16 toward the main power opening/closing device 5 is generated will be described. Specifically, the first stationary coil 8 and the moving coil 10 generate electromagnetic repulsion after being energized with current, and the value of the electromagnetic repulsion isThe electromagnetic repulsion force makes the moving coil 10 move rightwards, drives the transmission rod 16 to move rightwards, and further drives the moving contact 19 of the main power switching device 5 to move rightwards, so that the moving contact 19 of the main power switching device 5 is contacted with the static contact 20. Wherein the current may be a pulsed direct current.
In specific implementation, the method for generating electromagnetic repulsion force after the first static coil 8 and the moving coil 10 are energized with current may be that the first static coil 8 and the moving coil 10 are connected in series in opposite winding directions, and the capacitor discharges electricity to the first static coil 8 and the moving coil 10 so as to generate electromagnetic repulsion force; alternatively, the first stationary coil 8 and the moving coil 10 may be respectively connected to two dc pulse power supplies, and the two dc pulse power supplies respectively provide reverse pulse dc currents for the first stationary coil 8 and the moving coil 10 to generate an electromagnetic repulsion, or other manners may be adopted, which is not limited in this embodiment. According toIt can be seen that the larger the pulse direct current passed through the second stationary coil 15 and the moving coil 10, the larger the electromagnetic repulsion.
After the second stationary coil 15 and the moving coil 10 are energized with current, an electromagnetic repulsion force may be generated, and an electromagnetic attraction force may also be generated, and the electromagnetic force may cause the driving rod 16 to move toward the standby power supply opening and closing device 6 regardless of the electromagnetic repulsion force or the electromagnetic attraction force. In the present embodiment, an example in which an electromagnetic repulsive force for moving the transmission lever 16 to the standby power source opening and closing device 6 is generated will be described. Specifically, the second stationary coil 15 and the moving coil 10 generate electromagnetic repulsion after being electrified, and the value of the electromagnetic repulsion isThe electromagnetic repulsion force makes the moving coil 10 move leftwards, drives the transmission rod 16 to move leftwards, and further drives the moving contact 18 of the standby power supply switching device 6 to move leftwards, so that the moving contact 18 of the standby power supply switching device 6 is contacted with the static contact 17. The current may be a pulsed direct current.
In specific implementation, the method for generating electromagnetic repulsion force after the second static coil 15 and the moving coil 10 are energized may be that the second static coil 15 and the moving coil 10 are connected in series in opposite winding directions, and the capacitor discharges electricity to the second static coil 15 and the moving coil 10 so as to generate electromagnetic repulsion force; alternatively, the second stationary coil 15 and the moving coil 10 may be respectively connected to two dc pulse power supplies, and the two dc pulse power supplies respectively provide reverse pulse dc currents for the second stationary coil 15 and the moving coil 10 to generate an electromagnetic repulsion, or other manners may be adopted, which is not limited in this embodiment. According toIt can be seen that the larger the pulse direct current passed through the second stationary coil 15 and the moving coil 10, the larger the electromagnetic repulsion.
In specific implementation, when the moving contact 19 of the main power switching device 5 is in contact with the fixed contact 20, the moving coil 10 is also in right contact with the second fixed coil 15; when the movable contact 18 of the standby power supply switching device 6 is contacted with the fixed contact 17, the movable coil 10 is also just contacted with the first fixed coil 8.
In specific implementation, the first static coil 8, the second static coil 15 and the moving coil 10 may be superconducting coils. In the superconducting state, the energization current can reach the limit electric field strength based on the zero resistance characteristic. When the first static coil 8, the second static coil 15 and the moving coil 10 are electrified with pulse direct current, the superconducting coil has excellent current carrying performance and weaker magnetic field attenuation characteristic, and the critical current density is 12000 amperes per square centimeter under a high magnetic field of 10 Tesla.
The working process of the embodiment is as follows: when the main power supply switching device 5 is switched off according to actual requirements, pulse direct current is simultaneously introduced into the second static coil 15 and the moving coil 10, large electromagnetic repulsion force is generated instantly by the second static coil 15 and the moving coil 10, the moving coil 10 moves leftwards due to the electromagnetic repulsion force, and the moving coil 10 is connected with the transmission rod 16, so that the movement of the moving coil 10 drives the transmission rod 16 to move leftwards, a moving contact 19 of the main power supply switching device 5 is separated from a static contact 20, and a moving contact 18 of the standby power supply switching device 6 is contacted with the static contact 17, so that the standby power supply switching device 6 is started. At this time, the force holding mechanism 3 applies a holding force to the transmission rod 16, so that the movable contact 18 and the fixed contact 17 of the auxiliary power supply switching device 6 are held in contact with each other. When the standby power supply switching device 6 is switched off according to actual requirements, pulse direct current is simultaneously introduced into the first static coil 8 and the moving coil 10, large electromagnetic repulsion force is generated instantly by the first static coil 8 and the moving coil 10, the moving coil 10 moves rightwards due to the electromagnetic repulsion force, the transmission rod 16 is driven to move rightwards, the moving contact 18 and the static contact 17 of the standby power supply switching device 6 are separated, the moving contact 19 of the main power supply switching device 5 is contacted with the static contact 20, and the starting of the main power supply switching device 5 is realized. At this time, the force retaining mechanism 3 applies a retaining force to the transmission lever 16, so that the movable contact 19 and the stationary contact 20 of the main power switching device 5 are held in contact with each other.
It can be seen that, in this embodiment, the contact between the movable contact 19 of the main power switching device 5 and the fixed contact 20 is realized by the electromagnetic repulsion generated by the current passing through the first fixed coil 8 and the moving coil 10, and the contact between the movable contact 18 of the standby power switching device 6 and the fixed contact 17 is realized by the electromagnetic repulsion generated by the current passing through the second fixed coil 15 and the moving coil 10, so that the electromagnetic energy utilization rate is high, the electromagnetic repulsion is large, the switching speed is greatly increased, the duration is long, the movement stroke is prolonged, and the electromagnetic switching device is simple in structure and easy to operate.
With continued reference to fig. 3-5, in the above-described embodiment, the electromagnetic drive mechanism 2 may further include: a superconducting coil 9. The superconducting coil 9 is a torus. The superconducting coil 9 is connected with the side wall of the shell 7, and the first static coil 8, the second static coil 15 and the moving coil 10 are all arranged in the superconducting coil 9. The superconducting coil 9 is an embedded winding superconducting coil. The superconducting coils 9 are used to generate a lorentz electromagnetic force which accelerates the movement of the transmission rod 16 when current is applied. In particular, the superconducting coil 9 may be fed with a pulsed direct current.
The working principle of the embodiment is as follows: referring to fig. 3, the superconducting coil 9 may be connected to a dc pulse power supply, the dc pulse power supply provides a pulsed dc current to the superconducting coil, the superconducting coil 9 in the housing 7 is in the region of the strong magnetic field region 4, and the strong magnetic field region 4 is instantaneously filled with a radial high magnetic field (magnetic lines of force B)0、B1、B2、B3、B4、B5) At this time, the moving coil 10 rapidly cuts the magnetic lines of the high magnetic field at a constant velocity V upward (with respect to fig. 3), and the value thereof isThe lorentz electromagnetic force generated by the electromagnetic force generation device and the electromagnetic repulsion force generated before are superposed and exploded, and the electromagnetic force coupling and explosion instantly drives the moving coil 10 to move upwards at a microsecond-level ultra-high speed so as to drive the transmission rod 16 to move upwards quickly.
In specific implementation, when the transmission rod 16 moves leftward to make the movable contact 18 of the standby power supply switching device 6 contact with the fixed contact 17, the superconducting coil 9 drives the movable coil 10 to move leftward rapidly, so as to drive the transmission rod 16 to move leftward. When the transmission rod 16 moves to the right to make the movable contact 19 of the main power switching device 5 contact with the fixed contact 20, the superconducting coil 9 drives the movable coil 10 to move to the right rapidly, and drives the transmission rod 16 to move to the right.
The working process of the embodiment: when pulse direct current is introduced into the first static coil 8 and the moving coil 10, a large electromagnetic repulsion force is generated between the first static coil 8 and the moving coil 10 instantaneously, and the moving coil 10 moves rightwards rapidly under the action of the electromagnetic repulsion force. At this time, pulse current is introduced into the superconducting coil 9, the region of the superconducting coil 9 is instantly filled with a radial high magnetic field, the moving coil 10 rapidly cuts magnetic lines of the high magnetic field rightward at a certain speed, lorentz electromagnetic force is generated, the lorentz electromagnetic force is superimposed and erupted with the electromagnetic repulsion force generated before, the electromagnetic force coupling eruption instantly drives the moving coil 10 to move rightward at a microsecond-level ultra-fast speed, and further drives the transmission rod 16 to move rightward at a fast speed, so that the moving contact 19 of the main power switching device 5 is contacted with the static contact 20. Similarly, when the pulse direct current is applied to the second stationary coil 15 and the moving coil 10, and the pulse current is applied to the superconducting coil 9, the generated electromagnetic force and the lorentz electromagnetic force are superimposed and erupted, and the driving coil 10 moves leftwards at a very fast microsecond level in an instant of electromagnetic force coupling and eruption, so as to drive the driving rod 16 to move leftwards at a fast speed, so that the moving contact 18 of the standby power supply switching device 6 is in contact with the stationary contact 17.
In the embodiment, the lorentz electromagnetic force generated by the current introduced through the superconducting coil 9 and the electromagnetic repulsion force are superposed, the principle of electromagnetic force explosion is utilized to enable the double-power-supply uninterrupted ultra-fast switching device to obtain extra-large acceleration, the switching speed is greatly improved, the switching between the main power supply opening and closing device 5 and the standby power supply opening and closing device 6 can be completed in zero time delay, the electromagnetic energy utilization rate is greatly improved, the electromagnetic attenuation is slow, the device is suitable for long-distance driving, and the movement stroke is prolonged.
Referring to fig. 4 and 5, in the foregoing embodiments, the uninterruptible power supply dual-power supply very fast switching device may further include: a partition 11. Wherein, the partition plate 11 is connected with the inner wall of the housing 7, and the partition plate 11 is used for dividing the housing 7 into a first cavity 71 and a second cavity 72. Specifically, the shape of the partition plate 11 matches the shape of the housing 7, so that the first cavity 71 and the second cavity 72 are both closed spaces. The first cavity 71 may be close to the main power source opening and closing device 5, and the second cavity 72 is close to the standby power source opening and closing device 6, of course, the first cavity 71 may also be close to the standby power source opening and closing device 6, and the second cavity 72 is close to the main power source opening and closing device 5, where the positions of the first cavity 71 and the second cavity 72 in the housing 7 are not limited in this embodiment, but in this embodiment, the first cavity 71 is close to the standby power source opening and closing device 6, and the second cavity 72 is close to the main power source opening and closing device 5. Preferably, the spacer 11 is a yoke spacer.
The electromagnetic drive mechanism 2 is disposed in the first cavity 71, and the force retention mechanism 3 is disposed in the second cavity 72. Since the transmission rod 16 slidably penetrates the housing 7, the transmission rod 16 slidably penetrates the partition plate 11.
It can be seen that, in this embodiment, the partition 11 is arranged to separate the electromagnetic driving mechanism 2 from the force retaining mechanism 3, so as to avoid the mutual influence between the two mechanisms and ensure the stable operation of the uninterrupted dual-power supply very-fast switching device.
With continued reference to fig. 4 and 5, in the above-described embodiment, the first stationary coil 8, the second stationary coil 15, the moving coil 10, and the superconducting coil 9 are all disposed within the first cavity 71. The first stationary coil 8 is connected to the ceiling wall 73 of the casing 7, the second stationary coil 15 is connected to the partition 11, and the superconducting coil 9 is connected to the side wall of the casing 7. In this way, the first stationary coil 8 and the second stationary coil 15 can be fixed to the housing 7 better.
Referring to fig. 3 to 5, in the above embodiments, the force holding mechanism 3 may include: a ring-shaped permanent magnet 12 and an iron core 13. The permanent magnet 12 and the iron core 13 are both disposed in the second cavity 72, the permanent magnet 12 is an annular body, and the permanent magnet 12 is connected to the side wall of the casing 7, so that the permanent magnet 12 and the casing 7 are kept in a fixed state. The transmission rod 16 is inserted through and connected to the iron core 13, that is, the transmission rod 16 is inserted through the iron core 13, and the second end of the transmission rod 16 extends out of the iron core 13 and the bottom wall 74 of the housing 7 and is connected to the movable contact 19 of the main power switching device 5. The transmission rod 16 is connected to the plunger 13, and the leftward or rightward movement of the transmission rod 16 moves the plunger 13 leftward or rightward. The iron core 13 is a cylindrical body, the iron core 13 is slidably disposed through the permanent magnet 12, and specifically, the iron core 13 can slide leftward or rightward along with the transmission rod 16 inside the permanent magnet 12.
The permanent magnet 12, the iron core 13 and the bottom wall 74 of the housing 7 form a first magnetic circuit, and when the movable contact 19 of the main power switching device 5 is in contact with the fixed contact 20, the first magnetic circuit applies a holding force to the iron core 13, and further applies a holding force to the transmission rod 16, and the holding force enables the movable contact 19 of the main power switching device 5 to be in contact with the fixed contact 20.
The permanent magnet 12, the iron core 13 and the partition 11 form a second magnetic circuit, when the moving contact 17 of the standby power supply switching device 6 is in contact with the fixed contact 18, the second magnetic circuit applies a holding force to the iron core 13, and further applies a holding force to the transmission rod 16, and the holding force enables the moving contact 18 of the standby power supply switching device 6 to be in contact with the fixed contact 17.
The working process of the embodiment is as follows: when the movable contact 19 of the main power switching device 5 contacts the fixed contact 20, the permanent magnet 12 has a magnetic force, so that the permanent magnet 12, the iron core 13 and the bottom wall 74 of the housing 7 form a first magnetic circuit, the first magnetic circuit generates a rightward acting force on the iron core 13, and simultaneously, the permanent magnet 12, the iron core 13 and the partition 11 form a second magnetic circuit, and the second magnetic circuit generates a leftward acting force on the iron core 13. However, at this time, since the gap between the iron core 13 and the bottom wall 74 of the housing 7 is small and the gap between the iron core 13 and the partition 11 is large, the rightward acting force generated by the first magnetic circuit is larger than the leftward acting force generated by the second magnetic circuit, so that the iron core 13 moves rightward to drive the transmission rod 16 to move rightward, and since the movable contact 19 of the main power switching device 5 is in contact with the fixed contact 20, the transmission rod 16 cannot move rightward continuously, and the transmission rod 16 and the iron core 13 maintain the existing state, that is, the movable contact 19 of the main power switching device 5 is kept in contact with the fixed contact 20.
When the movable contact 18 of the standby power supply switching device 6 contacts the fixed contact 17, the first magnetic circuit still generates a rightward acting force on the iron core 13, and the second magnetic circuit still generates a leftward acting force on the iron core 13, however, since the gap between the iron core 13 and the bottom wall 74 of the housing 7 is large and the gap between the iron core 13 and the partition 11 is small at this time, the rightward acting force generated by the first magnetic circuit is smaller than the leftward acting force generated by the second magnetic circuit, so that the iron core 13 moves leftward to drive the transmission rod 16 to move leftward, and since the movable contact 18 of the standby power supply switching device 6 contacts the fixed contact 17, the transmission rod 16 cannot move leftward, and the transmission rod 16 and the iron core 13 maintain the existing state, that is, the movable contact 18 of the standby power supply switching device 6 and the fixed contact 17.
It can be seen that, in this embodiment, the first magnetic circuit and the second magnetic circuit are generated by the magnetic force of the permanent magnet 12, so that the moving contact and the fixed contact of the main power switching device 5 or the standby power switching device 6 are always kept in a contact state, the holding force exerted by the first magnetic circuit and the second magnetic circuit on the iron core is large, the iron core can be kept stable for a long time, the main power switching device 5 or the standby power switching device 6 is effectively ensured to be kept in a conducting state, and the structure is simple and the size is small.
Referring to fig. 4 and 5, in the above embodiment, the force holding mechanism 3 may further include: a magnetically permeable ring 14. Wherein, the magnetic ring 14 is sleeved between the permanent magnet 12 and the iron core 13. Specifically, the magnetic conductive ring 14 is an annular body, the magnetic conductive ring 14 is sleeved in the annular permanent magnet 12, and the magnetic conductive ring 14 is connected with the permanent magnet 12. The iron core 13 is disposed through the magnetic conductive ring 14, and the iron core 13 can slide left and right relative to the magnetic conductive ring 14.
It can be seen that, in this embodiment, by providing the magnetic conductive ring 14, the magnetic field generated by the permanent magnet 12 is enhanced, so that the acting forces generated by the first magnetic circuit and the second magnetic circuit are stronger and more uniform, and the magnetic conductive ring 14 also plays a role in resisting interference.
With continued reference to fig. 4 and 5, in the above embodiment, a non-magnetic annular shim plate 21 may be disposed between the permanent magnet 12 and the bottom wall 74 of the casing 7, and a non-magnetic annular shim plate 21 may also be disposed between the permanent magnet 12 and the partition plate 11. In specific implementation, the annular backing plate 21 without magnetic conductivity may be disposed between the magnetic conductive ring 14 and the bottom wall 74 of the casing 7, and the annular backing plate 21 without magnetic conductivity may be disposed between the magnetic conductive ring 14 and the partition 11. The backing plate 21 may be a nylon block. Therefore, the short circuit phenomenon can be effectively avoided, the normal work of the double-power-supply uninterrupted ultra-fast switching device is ensured, and the safe operation of the main power supply opening and closing device 5 and the standby power supply opening and closing device 6 is further ensured.
In summary, the embodiment can greatly shorten the switching time between the main power source switching device 5 and the standby power source switching device 6, and avoid the switching delay, and the electromagnetic force of the electromagnetic driving mechanism 2 is generated after the current is introduced, so that the electromagnetic energy utilization rate is high, the maximum amplitude of the switching speed is accelerated, the electromagnetic force attenuation speed is low, and the movement stroke is long; in addition, the force applied by the force retaining mechanism 3 to the transmission rod 16 keeps the movable contacts and the fixed contacts of the main power source switching device 5 and the standby power source switching device 6 in a contact state, the performance of the retaining force is stable, and the normal operation of the main power source switching device 5 or the standby power source switching device 6 can be effectively ensured.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. The utility model provides a very fast auto-change over device that does not have a power failure which characterized in that includes: the device comprises a shell (7), a transmission rod (16), an electromagnetic driving mechanism (2) and a force retaining mechanism (3), wherein the electromagnetic driving mechanism (2) and the force retaining mechanism are arranged in the shell (7); wherein the content of the first and second substances,
the transmission rod (16) can slidably penetrate through the shell (7), a first end of the transmission rod (16) is used for being connected with a moving contact (19) of the main power supply switching device (5), and a second end of the transmission rod (16) is used for being connected with a moving contact (18) of the standby power supply switching device (6);
the electromagnetic driving mechanism (2) is connected with the transmission rod (16) and used for generating electromagnetic force after current is introduced, and the electromagnetic force drives the transmission rod (16) to move towards the main power supply switching device (5) or the standby power supply switching device (6) so as to enable a moving contact of the main power supply switching device (5) or the standby power supply switching device (6) to be in contact with a fixed contact;
the force maintaining mechanism (3) is connected with the transmission rod (16) and is used for applying a maintaining force to the transmission rod (16), and the maintaining force enables moving contacts and static contacts of the main power supply switching device (5) and the standby power supply switching device (6) to be kept in a contact state;
the electromagnetic drive mechanism (2) comprises: the superconducting coil (9), the first static coil (8), the second static coil (15) and the moving coil (10) are arranged along the axial direction of the shell (7); the superconducting coil (9) is connected with the side wall of the shell (7), the first static coil (8), the second static coil (15) and the moving coil (10) are all arranged in the superconducting coil (9), in addition, the first static coil (8) and the second static coil (15) have preset distances, the moving coil (10) is arranged between the first static coil (8) and the second static coil (15), the moving coil (10) is sleeved and connected with the transmission rod (16), and the transmission rod (16) can be slidably arranged in the first static coil (8) and the second static coil (15) in a penetrating mode;
the electromagnetic driving mechanism (2) is used for generating electromagnetic force for driving the transmission rod (16) to move after current is introduced; the superconducting coil (9) is used for generating Lorentz electromagnetic force for accelerating the movement of the transmission rod (16) after current is introduced, and the Lorentz electromagnetic force and the electromagnetic force are superposed.
2. The uninterrupted very fast switching device of claim 1,
the first static coil (8) and the moving coil (10) are used for generating repulsion force for enabling the transmission rod (16) to move towards the main power supply opening and closing device (5) after current is introduced;
the second static coil (15) and the moving coil (10) are used for generating repulsive force for enabling the driving rod (16) to move towards the standby power supply opening and closing device (6) after current is introduced.
3. The uninterruptible power supply extra-fast switching device of claim 2, further comprising: a partition plate (11); wherein the content of the first and second substances,
the partition plate (11) is connected with the inner wall of the shell (7), and the partition plate (11) is used for dividing the shell (7) into a first cavity (71) and a second cavity (72);
the electromagnetic driving mechanism (2) is arranged in the first cavity (71), the force maintaining mechanism (3) is arranged in the second cavity (72), and the transmission rod (16) is slidably arranged in the partition plate (11) in a penetrating mode.
4. The uninterrupted power supply and very fast switching device according to claim 3, characterized in that said first stationary coil (8) is connected to a top wall (73) of said housing (7) and said second stationary coil (15) is connected to said partition (11).
5. The uninterrupted very fast switching device of claim 3, characterized in that said partition (11) is a yoke partition.
6. The uninterruptible power supply very fast switching device for dual power supply of claim 4, wherein the force maintaining mechanism (3) comprises: an annular permanent magnet (12) and an iron core (13); wherein the content of the first and second substances,
the permanent magnet (12) is connected with the side wall of the shell (7), the transmission rod (16) penetrates through and is connected to the iron core (13), and the iron core (13) penetrates through the permanent magnet (12) in a sliding mode;
the permanent magnet (12), the iron core (13) and the bottom wall of the shell (7) form a first magnetic circuit, and the first magnetic circuit is used for applying a holding force to the iron core (13) to enable a moving contact (19) and a static contact (20) of the main power supply switching device (5) to be in a contact state;
the permanent magnet (12), the iron core (13) and the partition plate (11) form a second magnetic circuit, and the second magnetic circuit is used for applying a holding force to the iron core (13) to enable a moving contact (18) and a static contact (17) of the standby power supply switching device (6) to be in a contact state.
7. The uninterruptible power supply very fast switching device for dual power supply of claim 6, wherein the force maintaining mechanism (3) further comprises: a magnetic conductive ring (14); wherein the content of the first and second substances,
the magnetic conductive ring (14) is sleeved between the permanent magnet (12) and the iron core (13).
8. The uninterrupted power supply and very fast switching device according to claim 6, characterized in that non-magnetic backing plates (21) are arranged between the permanent magnet (12) and the bottom wall (74) of the casing (7) and between the permanent magnet (12) and the partition plate (11).
9. The uninterrupted very fast switching device of the double power supply according to claim 1, characterized in that the housing (7) is a yoke housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610975729.XA CN106449203B (en) | 2016-11-07 | 2016-11-07 | Double-power supply uninterrupted very-fast switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610975729.XA CN106449203B (en) | 2016-11-07 | 2016-11-07 | Double-power supply uninterrupted very-fast switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106449203A CN106449203A (en) | 2017-02-22 |
| CN106449203B true CN106449203B (en) | 2019-12-27 |
Family
ID=58180302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610975729.XA Active CN106449203B (en) | 2016-11-07 | 2016-11-07 | Double-power supply uninterrupted very-fast switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106449203B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910946B (en) * | 2017-11-15 | 2018-07-20 | 陆峰 | A kind of high speed supply line double back circuit switching device and application method |
| CN110504131B (en) * | 2018-05-17 | 2024-04-16 | 王静洋 | Dual-power automatic switching device |
| CN111416421B (en) * | 2019-01-04 | 2023-10-20 | 华为技术有限公司 | Dual-power switching moving and static contact system, change-over switch and electrical equipment |
| CN110473723B (en) * | 2019-08-20 | 2024-04-19 | 陕西铭拓机电技术有限公司 | Dual power supply switching mechanism and switch equipment with same |
| CN110571916A (en) * | 2019-09-29 | 2019-12-13 | 北京潞电电气设备有限公司 | 0.4kV double-power switching device and switch |
| CN111415830B (en) * | 2020-02-25 | 2022-03-29 | 平高集团有限公司 | Electromagnetic repulsion force operating mechanism and switch using same |
| CN114388316B (en) * | 2021-12-24 | 2024-03-12 | 上海京硅智能技术有限公司 | Circuit breaker contact system |
| CN114899932B (en) * | 2022-03-24 | 2024-01-30 | 扬州万方科技股份有限公司 | Main and standby power supply system for embedded control equipment and switching method |
| CN115249591B (en) * | 2022-08-26 | 2024-03-19 | 天津加美特电气股份有限公司 | Magnetic line closed double-combination electric permanent magnet driving double-power transfer switch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349235A (en) * | 2000-10-16 | 2002-05-15 | 三菱电机株式会社 | Switch device |
| CN202443906U (en) * | 2012-02-28 | 2012-09-19 | 万美蓉 | Quick permanent-magnetic double-power selector switch used in low-voltage distribution environment |
| CN103077837A (en) * | 2013-01-08 | 2013-05-01 | 北京电研华源电力技术有限公司 | Automatic change-over switch and method of automatically changing over power supply |
| CN203165794U (en) * | 2013-04-01 | 2013-08-28 | 四川华仪电器有限公司 | Fast dual-power transfer switch |
| CN105869946A (en) * | 2016-05-19 | 2016-08-17 | 东南大学 | Monostable permanent magnet mechanism provided with combined breaking springs and used for high-voltage circuit breaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006147212A (en) * | 2004-11-17 | 2006-06-08 | Mitsubishi Electric Corp | Changeover switching device |
-
2016
- 2016-11-07 CN CN201610975729.XA patent/CN106449203B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349235A (en) * | 2000-10-16 | 2002-05-15 | 三菱电机株式会社 | Switch device |
| CN202443906U (en) * | 2012-02-28 | 2012-09-19 | 万美蓉 | Quick permanent-magnetic double-power selector switch used in low-voltage distribution environment |
| CN103077837A (en) * | 2013-01-08 | 2013-05-01 | 北京电研华源电力技术有限公司 | Automatic change-over switch and method of automatically changing over power supply |
| CN203165794U (en) * | 2013-04-01 | 2013-08-28 | 四川华仪电器有限公司 | Fast dual-power transfer switch |
| CN105869946A (en) * | 2016-05-19 | 2016-08-17 | 东南大学 | Monostable permanent magnet mechanism provided with combined breaking springs and used for high-voltage circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106449203A (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106449203B (en) | Double-power supply uninterrupted very-fast switching device | |
| CN203481122U (en) | Rapid vacuum switch and power grid system | |
| CN203165794U (en) | Fast dual-power transfer switch | |
| Puumala et al. | Electromagnetic design of ultrafast electromechanical switches | |
| CN107946133B (en) | Quick separating brake mechanism and hybrid alternating current circuit breaker | |
| Ro et al. | Characteristic analysis and design of a novel permanent magnetic actuator for a vacuum circuit breaker | |
| CN103441033B (en) | A kind of vacuum contactor | |
| CN102262980B (en) | Multi-pole direct current contactor | |
| Fang et al. | Optimization design and energy-saving control strategy of high power dc contactor | |
| CN201946516U (en) | Multi-pole small-sized direct current contactor | |
| CN211404390U (en) | Medium-voltage quick grounding switch | |
| CN104733232A (en) | Intelligent alternating current contactor with electromagnetic controllable reaction based on double coil structure | |
| CN104517753A (en) | Permanent magnet drive on-load voltage regulating switch | |
| CN204257438U (en) | A kind of permanent magnetic drive on-load voltage regulating switch | |
| CN110085487B (en) | Novel permanent-magnet electromagnetic relay | |
| CN204257496U (en) | A kind of vacuum contactor | |
| Zhang et al. | Influence of design parameters on electro-magnetic repulsion mechanism performance | |
| CN207200252U (en) | A kind of high reliability high-speed switch type fault current limiter | |
| Fang et al. | Contact parameter computation and analysis of air circuit breaker with permanent magnet actuator | |
| Aoyama et al. | Development of a circuit breaker system using a linear motor with opposite magnetic poles | |
| CN201918324U (en) | Dipolar direct-current contactor | |
| CN113192779A (en) | Relay operating mechanism with double power switching, switching topological structure and control method | |
| Dong et al. | Structure optimization on high-speed electromagnetic repulsion mechanism | |
| CN111029190A (en) | Fast switching switch device, system and fast switching method | |
| Shin et al. | Study of Arc Motion and Switching Performance in DC Magnetic Contactors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |