CN113745063A - Electromagnetic repulsion mechanism with redundancy design and switch equipment - Google Patents
Electromagnetic repulsion mechanism with redundancy design and switch equipment Download PDFInfo
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- CN113745063A CN113745063A CN202110845679.4A CN202110845679A CN113745063A CN 113745063 A CN113745063 A CN 113745063A CN 202110845679 A CN202110845679 A CN 202110845679A CN 113745063 A CN113745063 A CN 113745063A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/27—Relays with armature having two stable magnetic states and operated by change from one state to the other
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
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Abstract
The invention relates to an electromagnetic repulsion mechanism with a redundant design and a switch device, wherein the electromagnetic repulsion mechanism comprises a first electromagnetic repulsion unit and a second electromagnetic repulsion unit, and the first electromagnetic repulsion unit and the second electromagnetic repulsion unit are selected or driven to drive the switch device at the same time; the first electromagnetic repulsion unit comprises a first transmission rod, a first repulsion plate and a first front side repulsion coil, and the second electromagnetic repulsion unit comprises a second transmission rod, a second repulsion plate and a second front side repulsion coil; the repulsion plate is fixed on the transmission rod; the front side repulsion coil is arranged on the front side of the repulsion plate; the first electromagnetic repulsion unit is positioned behind the second repulsion plate, the first transmission rod is a hollow rod, the rear end of the second transmission rod penetrates into the first transmission rod, and the rear ends of the first transmission rod and the second transmission rod are respectively provided with an impact part for impacting the movable end of the switch body of the switch device so as to enable the movable end of the switch body to act. According to the invention, the redundant electromagnetic driving unit is nested in the electromagnetic repulsion mechanism, so that the reliability of the switch equipment is ensured and the arrangement size is reduced.
Description
Technical Field
The present invention relates to an electromagnetic repulsion mechanism having a redundant design, and a switchgear using the same.
Background
In the current high-voltage flexible direct-current transmission project, a large number of devices such as a high-voltage direct-current circuit breaker, a high-voltage direct-current controllable lightning arrester, a high-voltage superconducting current limiter and the like are applied, the devices all provide requirements for rapid opening and closing of a switch device (the opening and closing time is less than 5 ms), and in order to achieve rapid opening and closing operation, an electromagnetic repulsion mechanism is basically used as an operating mechanism of the switch device. The basic principle of the electromagnetic repulsion mechanism is as follows: the pre-charged capacitor discharges to the driving coil, pulse current is generated in the coil, the pulse current enables an alternating magnetic field to be generated around the coil, reverse induced eddy current is generated on the metal disc, the magnetic field generated by the eddy current and the magnetic field generated by the coil interact to generate electromagnetic force, the driving rod and the arc extinguish chamber contact are driven to move, and the opening and closing operation of the switch is achieved.
For example, the invention patent application with the application number of 201810998810.9 discloses a mechanical fast switch based on an electromagnetic repulsion mechanism, the mechanical fast switch is connected with the electromagnetic repulsion mechanism and an operating mechanism at a moving end (namely, the moving end of a switch body) of a vacuum arc-extinguishing chamber, the electromagnetic repulsion mechanism is completely independent from the operating mechanism, the electromagnetic repulsion mechanism is only used as a brake opening driving mechanism for driving the brake opening of the mechanical fast switch, the operating mechanism adopts a bistable permanent magnet mechanism and can realize the brake opening and closing operation, and when the mechanical fast switch is used, the mechanical fast switch is driven by the electromagnetic repulsion mechanism or the operating mechanism to open the brake; and under the independent driving of the operating mechanism, the mechanical quick switch is switched on.
Although the electromagnetic repulsion mechanism has the advantages of high starting speed and high opening and closing speed, the existing electromagnetic repulsion mechanism is used as an operating mechanism, the redundant design is not considered, and once the electromagnetic repulsion mechanism is abnormal, the opening and closing failure is caused due to the refusal of the movement. For the mechanical fast switch, although the bistable permanent magnet mechanism can be used to replace the electromagnetic repulsion mechanism for opening the switch, the bistable permanent magnet mechanism is difficult to achieve the same opening speed as the electromagnetic repulsion mechanism. In addition, in some switch apparatuses in the prior art, the circuit breaker using the electromagnetic repulsion mechanism as the operating mechanism is considered from the reliability perspective, and only the whole machine backup can be adopted for redundancy backup, which results in a rapid increase in cost and needs to occupy more layout space, and for the application occasions with sensitive layout space size, such as old station transformation, etc., the implementation difficulty of the scheme for whole machine backup is large, or even the scheme cannot be implemented at all.
Disclosure of Invention
The invention aims to provide an electromagnetic repulsion mechanism with a redundancy design, which is used for solving the technical problems that the electromagnetic repulsion mechanism in the prior art has no redundancy design and the whole machine backup occupies large space. It is also an object of the present invention to provide a switchgear using the electromagnetic repulsion mechanism.
The electromagnetic repulsion mechanism with the redundancy design adopts the following technical scheme:
an electromagnetic repulsion mechanism with redundant design, comprising: the first electromagnetic repulsion unit and the second electromagnetic repulsion unit select one or both of the first electromagnetic repulsion unit and the second electromagnetic repulsion unit to drive the switch device;
the first electromagnetic repulsion unit and the second electromagnetic repulsion unit each include: the axis of the transmission rod extends along the front-back direction and is used for moving along the front-back direction to output power; the repulsion plate is fixed on the transmission rod; the front side repulsion coil is arranged on the front side of the repulsion plate, is connected with a discharge circuit and is used for generating repulsion between the front side repulsion coil and the repulsion plate after being electrified so as to drive the transmission rod to move backwards;
the transmission rod, the repulsion plate and the front side repulsion coil of the second electromagnetic repulsion unit are a second transmission rod, a second repulsion plate and a second front side repulsion coil; the first electromagnetic repulsion unit is positioned behind the second repulsion plate, the first transmission rod is a hollow rod, the rear end of the second transmission rod penetrates into the first transmission rod, and the rear ends of the first transmission rod and the second transmission rod are respectively provided with an impact part for impacting the movable end of the switch body of the switch device so as to enable the movable end of the switch body to act.
The beneficial effects are that: the electromagnetic repulsion mechanism is provided with the first electromagnetic repulsion unit and the second electromagnetic repulsion unit which are nested together, the first electromagnetic repulsion unit and the second electromagnetic repulsion unit can be alternatively operated to drive the switch equipment and can also be simultaneously operated to drive the switch equipment, so that when one set of electromagnetic repulsion unit fails, the other set of electromagnetic repulsion unit can be used as a spare to ensure the normal operation of the switch equipment. Meanwhile, the two sets of electromagnetic repulsion units are arranged in a nested manner, namely the transmission rods of the two electromagnetic repulsion units are sleeved together in a penetrating manner, the two sets of electromagnetic repulsion units are equivalently arranged in parallel, and the impact parts at the rear ends of the two transmission rods can impact the movable end of the switch body of the switch equipment to drive the movable end of the switch body to act.
Furthermore, the second transmission rod penetrates into the first transmission rod and is in guide sliding fit with the first transmission rod, and due to the fact that the guide matching relationship exists between the first transmission rod and the second transmission rod, the rear end of the second transmission rod is equivalently supported by the first transmission rod in a guide mode, so that when each electromagnetic repulsion force unit is supported in a guide mode, one guide support can be arranged at the front end of the second transmission rod only, and one guide support is omitted.
Furthermore, the discharging circuit comprises a pre-charging capacitor and a trigger switch, different charging voltages are set for the pre-charging capacitor of the first electromagnetic repulsion unit and the pre-charging capacitor of the second electromagnetic repulsion unit, different electromagnetic repulsion mechanisms can be selected according to actual conditions when the discharging circuit is used, and therefore the discharging circuit is suitable for switching equipment with different specifications.
Furthermore, the second transmission rod comprises a large-diameter rod section and a small-diameter rod section which are sequentially arranged from front to back, a backward step surface is formed between the large-diameter rod section and the small-diameter rod section, the second repulsion disc is fixedly arranged on the large-diameter rod section, and the small-diameter section of the second transmission rod penetrates into the first transmission rod. The second transmission rod is set to be the stepped rod, the first transmission rod is sleeved on the small-diameter rod section, and then the radial size difference between the two electromagnetic repulsion units can be reduced.
Furthermore, the front end of the inner hole of the hollow rod is a horn mouth, so that the first transmission rod can be conveniently sleeved on the small-diameter rod section.
The switch equipment adopts the following technical scheme:
a switch device comprises a switch body movable end which can move along the opening and closing direction;
the electromagnetic repulsion mechanism is used for driving the movable end of the switch body to move; the electromagnetic repulsion mechanism includes: the first electromagnetic repulsion unit and the second electromagnetic repulsion unit select one or both of the first electromagnetic repulsion unit and the second electromagnetic repulsion unit to drive the switch device; the first electromagnetic repulsion unit and the second electromagnetic repulsion unit each include: the axis of the transmission rod extends along the front-back direction and is used for moving along the front-back direction to output power;
the repulsion plate is fixed on the transmission rod; the front side repulsion coil is arranged on the front side of the repulsion plate, is connected with a discharge circuit and is used for generating repulsion between the front side repulsion coil and the repulsion plate after being electrified so as to drive the transmission rod to move backwards;
the transmission rod, the repulsion plate and the front side repulsion coil of the second electromagnetic repulsion unit are a second transmission rod, a second repulsion plate and a second front side repulsion coil; the first electromagnetic repulsion unit is positioned behind the second repulsion plate, the first transmission rod is a hollow rod, the rear end of the second transmission rod penetrates into the first transmission rod, and the rear ends of the first transmission rod and the second transmission rod are respectively provided with an impact part for impacting the movable end of the switch body of the switch device so as to enable the movable end of the switch body to act.
The beneficial effects are that: the switch equipment adopts the electromagnetic repulsion mechanism with a redundant design, the electromagnetic repulsion mechanism is provided with the first electromagnetic repulsion unit and the second electromagnetic repulsion unit which are nested together, the first electromagnetic repulsion unit and the second electromagnetic repulsion unit can be selected to act to drive the switch equipment, and can also act to drive the switch equipment simultaneously, so that when one set of electromagnetic repulsion unit fails, the normal operation of the switch equipment can be ensured by taking the other set of electromagnetic repulsion unit as a standby. Meanwhile, the two sets of electromagnetic repulsion units are arranged in a nested manner, namely the transmission rods of the two electromagnetic repulsion units are sleeved together in a penetrating manner, the two sets of electromagnetic repulsion units are equivalently arranged in parallel, and the impact parts at the rear ends of the two transmission rods can impact the movable end of the switch body of the switch equipment to drive the movable end of the switch body to act.
Furthermore, the second transmission rod penetrates into the first transmission rod and is in guide sliding fit with the first transmission rod, and due to the fact that the guide matching relationship exists between the first transmission rod and the second transmission rod, the rear end of the second transmission rod is equivalently supported by the first transmission rod in a guide mode, so that when each electromagnetic repulsion force unit is supported in a guide mode, one guide support can be arranged at the front end of the second transmission rod only, and one guide support is omitted.
Furthermore, the discharging circuit comprises a pre-charging capacitor and a trigger switch, different charging voltages are set for the pre-charging capacitor of the first electromagnetic repulsion unit and the pre-charging capacitor of the second electromagnetic repulsion unit, different electromagnetic repulsion mechanisms can be selected according to actual conditions when the discharging circuit is used, and therefore the discharging circuit is suitable for switching equipment with different specifications.
Furthermore, the second transmission rod comprises a large-diameter rod section and a small-diameter rod section which are sequentially arranged from front to back, a backward step surface is formed between the large-diameter rod section and the small-diameter rod section, the second repulsion disc is fixedly arranged on the large-diameter rod section, and the small-diameter section of the second transmission rod penetrates into the first transmission rod. The second transmission rod is set to be the stepped rod, the first transmission rod is sleeved on the small-diameter rod section, and then the radial size difference between the two electromagnetic repulsion units can be reduced.
Furthermore, the front end of the inner hole of the hollow rod is a horn mouth, so that the first transmission rod can be conveniently sleeved on the small-diameter rod section.
Drawings
Fig. 1 is a schematic view of an embodiment 1 of an electromagnetic repulsion mechanism with a redundant design of the present invention;
in the figure: 1. a first electromagnetic repulsion unit; 11. a first drive lever; 111. a bell mouth; 12. a first repulsive force plate; 13. a first discharge circuit; 14. a first front-side repulsive coil; 2. a second electromagnetic repulsion unit; 21. a second transmission rod; 211. a large diameter pole section; 212. a small diameter rod section; 213. a step surface; 22. a second repulsive force plate; 23. a second discharge circuit; 24. a second front-side repulsive coil; 3. The switch body moves the end.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
The first electromagnetic repulsion unit 1 and the second electromagnetic repulsion unit 2 both comprise a transmission rod, a repulsion plate, a front side repulsion coil and a discharge circuit connected with the front side repulsion coil, the discharge circuits of the first electromagnetic repulsion unit 1 and the second electromagnetic repulsion unit 2 are independent of each other, each discharge circuit comprises a pre-discharge capacitor and a trigger switch, and the pre-discharge capacitors are respectively connected with a charging circuit (not shown in the figure).
The extending direction of the axis of the transmission rod is defined as the front-back direction, the moving end 3 of the switch body of the switch device is positioned behind the electromagnetic repulsion mechanism, the moving end 3 of the switch body moves backwards, the switch device realizes opening, and at the moment, the repulsion coil at the front side is an opening repulsion coil; the repulsion plate is fixed on the transmission rod and is coaxially arranged with the transmission rod; the front side repulsion coil is arranged on the front side of the repulsion plate and used for generating repulsion between the front side repulsion coil and the repulsion plate after being electrified, and the repulsion plate drives the transmission rod to move backwards after being subjected to the repulsion of the front side repulsion coil.
For the sake of description of the two electromagnetic repulsion units separately, the driving rod, the repulsion disk and the front-side repulsion coil of the first electromagnetic repulsion unit 1 are defined herein as the first driving rod 11, the first repulsion disk 12 and the first front-side repulsion coil 14, respectively, and the driving rod, the repulsion disk and the front-side repulsion coil of the second electromagnetic repulsion unit 2 are defined as the second driving rod 21, the second repulsion disk 22 and the second front-side repulsion coil 24, respectively; the first electromagnetic repulsion unit 1 is located behind the second repulsion tray 22, and the first front-side repulsion coil 14 and the second front-side repulsion coil 24 are respectively disposed at the front sides of the first repulsion tray 12 and the second repulsion tray 22.
In the invention, a first electromagnetic repulsion unit 1 and a second electromagnetic repulsion unit 2 are nested. The first electromagnetic repulsion unit 1 and the second electromagnetic repulsion unit 2 are arranged in parallel, and when the two electromagnetic repulsion units are used simultaneously, the two electromagnetic repulsion units can synchronously impact the switch body moving end 3 of the switch device. Specifically, the first transmission rod 11 is a hollow rod, and the rear end of the second transmission rod 21 penetrates into the first transmission rod 11, in this embodiment, the rear end of the second transmission rod 21 is in guiding sliding fit with the first transmission rod 11, and the end faces of the rear ends of the first transmission rod 11 and the second transmission rod 21 respectively form respective impact portions for impacting the action of the movable end 3 of the switch body. As shown in fig. 1, in this embodiment, rear end faces of the first transmission rod 11 and the second transmission rod 21 are in a flush state, and both the first transmission rod 11 and the second transmission rod 21 are in contact with the switch body moving end 3, when the first transmission rod 11 and the second transmission rod 21 respectively move backward under the driving of the corresponding repulsion discs, the rear end faces of the first transmission rod 11 and the second transmission rod 21 respectively impact the switch body moving end 3, so that the switch body moving end 3 moves fast toward the opening direction, and the opening of the switch device is realized.
In the invention, when one of the two electromagnetic repulsion units is selected for use, for example, only the first electromagnetic repulsion unit 1 is used, when the switch device needs to be opened, the second transmission rod 21 is fixed, the first trigger switch is triggered, the first transmission rod 11 is driven by the first repulsion plate 12 to move towards the opening direction along the extension direction of the second transmission rod 21, and the rear end face of the first transmission rod 11 impacts and pushes the moving end 3 of the switch body to move, so that the switch device realizes opening. Similarly, when only the second electromagnetic repulsion unit 2 is used, the first transmission rod 11 is fixed, and the second transmission rod 21 is driven by the repulsion plate to impact the first transmission rod 11 under the guiding action and push the movable end 3 of the switch body to move, so that the switch device is switched off. When the two electromagnetic repulsion units are used simultaneously, the trigger switches of the discharge circuits of the two electromagnetic repulsion units are closed simultaneously, the two transmission rods act synchronously, and then the movable end 3 of the switch body is synchronously impacted and pushed.
In the present invention, in order to avoid electromagnetic interference between the first electromagnetic repulsion unit 1 and the second electromagnetic repulsion unit 2, the repulsion disk and the repulsion coil of the first electromagnetic repulsion unit 1 and the repulsion disk and the repulsion coil of the second repulsion unit are separated from each other by a housing, and fig. 1 does not show the housing structure and the guiding support cooperation between the housing and the transmission rod. In addition, because the rear end of the second transmission rod 21 is guided to slide by virtue of the first transmission rod 11, when the guide support is arranged, only one guide support needs to be arranged for the second electromagnetic repulsion unit 2, namely, only one section of the front end of the second transmission rod 21 is matched with the guide support of the shell, and no guide support matching relation needs to be additionally established between the rear end of the second transmission rod 21 and the shell; the front end and the rear end of the first transmission rod 11 are respectively provided with a section matched with the guiding support of the shell.
As another embodiment of the present invention, embodiment 1 is different from embodiment 1 in that a gap may be provided between the first transmission rod 11 and the second transmission rod 21, and the second transmission rod 21 and the first transmission rod 11 do not have a guiding fit relationship, in order to ensure the stability of the second transmission rod 21, a section of the rear end of the second transmission rod 21 needs to be fitted with a housing guiding support.
In this embodiment 1, the first pre-charge capacitor of the first electromagnetic repulsion unit 1 and the second pre-charge capacitor of the second electromagnetic repulsion unit 2 output different charging voltages during discharging, and the magnitude of the output voltage can be set according to the voltage level of the switch device. Of course, as another embodiment of the present invention, in addition to embodiment 1, the output voltages of the precharge capacitors of the two electromagnetic repulsive force units may be set to be the same.
In this embodiment 1, the second transmission rod 21 is a step rod, the step rod includes a large-diameter rod section 211 and a small-diameter rod section 212, the large-diameter rod section 211 and the small-diameter rod section 212 are sequentially arranged in front and back, a backward step surface 213 is formed between the large-diameter rod section 211 and the small-diameter rod section 212, the second repulsive disc 22 is fixedly installed on the large-diameter rod section 211, and the first transmission rod 11 is sleeved on the small-diameter rod section 212 from back to front. As another embodiment of the present invention, in addition to embodiment 1, the second transmission rod 21 may be a straight rod with an equal diameter.
In order to facilitate the sleeving of the first transmission rod 11 on the second transmission rod 21, in this embodiment 1, the front end of the inner hole of the first transmission rod 11 is in a bell-mouth 111 structure. Of course, as another embodiment of the present invention, on the basis of embodiment 1, the front end of the inner hole may not be provided with the bell mouth 111, and the rear end of the second transmission rod 21 may be provided with a tapered section to facilitate the sleeving of the first transmission rod 11.
In this embodiment 1, a pre-charge capacitor is used in the discharge circuit to supply voltage to the repulsive coil, and as another embodiment of the present invention, a power supply may be used instead of the pre-charge capacitor on the basis of embodiment 1.
In this embodiment 1, each electromagnetic repulsion unit is only provided with a front-side repulsion coil on one side of the repulsion plate facing away from the opening direction, at this time, the electromagnetic repulsion mechanism is used to drive the switching device to open, and the closing process can be realized by a permanent magnet retaining mechanism, for example, a mechanical fast switch mentioned in the background of the present invention realizes the closing operation by using a bistable permanent magnet retaining mechanism.
As another embodiment of the present invention, the difference from embodiment 1 is that the electromagnetic repulsion mechanism can be changed in relative position with the moving end 3 of the switch body to drive the switch device to close by using the electromagnetic repulsion mechanism, at this time, the front side repulsion coil is used as the closing repulsion coil, and the transmission rod moves backwards to drive the moving end 3 of the switch body, thereby realizing the closing operation of the switch device.
As another embodiment of the present invention, the difference from embodiment 1 is that the repulsion coils are disposed on both sides of the repulsion disk, that is, the rear side repulsion coil is disposed on the rear side of the repulsion disk, but in order to enable the two transmission rods to drive the switch body moving end 3 to move toward the closing direction, the transmission rod should be connected to the switch body moving end 3, and the transmission rod and the switch body moving end 3 in embodiment 1 may not be connected, that is, the transmission rod and the switch body moving end 3 are in contact fit.
In this embodiment 1, the transmission rod is in contact with the movable end 3 of the switch body. As another embodiment of the present invention, different from embodiment 1, the transmission rod and the switch body moving end 3 may also be arranged at an interval, that is, there is an interval between the transmission rod and the switch body moving end 3, at this time, the switch body moving end 3 can be driven to move only when the transmission rod moves a certain distance to contact with the switch body moving end 3, which is equivalent to that the transmission rod drives the switch body moving end 3 to move at a set initial speed.
According to the embodiment of the switch equipment, the switch equipment can be a high-speed circuit breaker or a high-speed mechanical switch, the switch equipment comprises a switch body moving end 3 and an electromagnetic repulsion mechanism, the switch body moving end 3 can move along the opening and closing direction, a switching-on position and a switching-off position are arranged on a moving path, and the switching-off position is located behind the switching-on position; the electromagnetic repulsion mechanism has a redundant design, and the specific structure is the same as that of the electromagnetic repulsion mechanism in the above embodiment, and is not described herein again.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. An electromagnetic repulsion mechanism with redundant design, characterized in that it comprises:
the first electromagnetic repulsion unit (1) and the second electromagnetic repulsion unit (2) select one or both of the first electromagnetic repulsion unit (1) and the second electromagnetic repulsion unit (2) to drive the switch device;
the first electromagnetic repulsion unit (1) and the second electromagnetic repulsion unit (2) each include:
the axis of the transmission rod extends along the front-back direction and is used for moving along the front-back direction to output power;
the repulsion plate is fixed on the transmission rod;
the front side repulsion coil is arranged on the front side of the repulsion plate, is connected with a discharge circuit and is used for generating repulsion between the front side repulsion coil and the repulsion plate after being electrified so as to drive the transmission rod to move backwards;
the transmission rod, the repulsion plate and the front side repulsion coil of the first electromagnetic repulsion unit (1) are respectively a first transmission rod (11), a first repulsion plate (12) and a first front side repulsion coil (14), and the transmission rod, the repulsion plate and the front side repulsion coil of the second electromagnetic repulsion unit (2) are respectively a second transmission rod (21), a second repulsion plate (22) and a second front side repulsion coil (24); the first electromagnetic repulsion unit (1) is located behind the second repulsion disc (22), the first transmission rod (11) is a hollow rod, the rear end of the second transmission rod (21) penetrates into the first transmission rod (11), and the rear ends of the first transmission rod (11) and the second transmission rod (21) are respectively provided with an impact part for impacting a switch body moving end (3) of the switch device so as to enable the switch body moving end (3) to move.
2. An electromagnetic repulsion mechanism according to claim 1, characterized in that the second transmission rod (21) penetrates into the first transmission rod (11) and is in guided sliding engagement with the first transmission rod (11).
3. An electromagnetic repulsion mechanism according to claim 1 or 2, characterized in that the discharging circuit comprises a pre-charging capacitor and a trigger switch, the pre-charging capacitor of the first electromagnetic repulsion unit (1) and the pre-charging capacitor of the second electromagnetic repulsion unit (2) being set to different charging voltages.
4. The electromagnetic repulsion mechanism according to claim 1 or 2, characterized in that the second transmission rod (21) comprises a large-diameter rod section (211) and a small-diameter rod section (212) which are sequentially arranged from front to back, a backward step surface (213) is formed between the large-diameter rod section (211) and the small-diameter rod section (212), the second repulsion disk (22) is fixedly arranged on the large-diameter rod section (211), and the small-diameter section of the second transmission rod (21) penetrates into the first transmission rod (11).
5. An electromagnetic repulsion mechanism according to claim 1 or 2, characterized in that the front end of the inner bore of the hollow bar is flared (111).
6. A switching device comprising
The switch body moving end (3) can move along the opening and closing direction;
the electromagnetic repulsion mechanism is used for driving the movable end (3) of the switch body to move;
characterized in that, the electromagnetic repulsion mechanism comprises:
the first electromagnetic repulsion unit (1) and the second electromagnetic repulsion unit (2) select one or both of the first electromagnetic repulsion unit (1) and the second electromagnetic repulsion unit (2) to drive the switch device;
the first electromagnetic repulsion unit (1) and the second electromagnetic repulsion unit (2) each include:
the axis of the transmission rod extends along the front-back direction and is used for moving along the front-back direction to output power;
the repulsion plate is fixed on the transmission rod;
the front side repulsion coil is arranged on the front side of the repulsion plate, is connected with a discharge circuit and is used for generating repulsion between the front side repulsion coil and the repulsion plate after being electrified so as to drive the transmission rod to move backwards;
the transmission rod, the repulsion plate and the front side repulsion coil of the first electromagnetic repulsion unit (1) are respectively a first transmission rod (11), a first repulsion plate (12) and a first front side repulsion coil (14), and the transmission rod, the repulsion plate and the front side repulsion coil of the second electromagnetic repulsion unit (2) are respectively a second transmission rod (21), a second repulsion plate (22) and a second front side repulsion coil (24); the first electromagnetic repulsion unit (1) is located behind the second repulsion disc (22), the first transmission rod (11) is a hollow rod, the rear end of the second transmission rod (21) penetrates into the first transmission rod (11), and the rear ends of the first transmission rod (11) and the second transmission rod (21) are respectively provided with an impact part for impacting a switch body moving end (3) of the switch device so as to enable the switch body moving end (3) to move.
7. A switchgear device according to claim 6, characterized in that the second driving rod (21) penetrates into the first driving rod (11) and is in guided sliding engagement with the first driving rod (11).
8. A switching device according to claim 6 or 7, wherein said discharge circuit comprises a pre-charge capacitor and a trigger switch, the pre-charge capacitor of the first electromagnetic repulsion unit (1) and the pre-charge capacitor of the second electromagnetic repulsion unit (2) being set to different charging voltages.
9. The switchgear according to claim 6 or 7, wherein the second transmission rod (21) comprises a large-diameter rod section (211) and a small-diameter rod section (212) which are arranged in sequence, a backward step surface (213) is formed between the large-diameter rod section (211) and the small-diameter rod section (212), the second repulsion disk (22) is fixedly arranged on the large-diameter rod section (211), and the small-diameter section of the second transmission rod (21) penetrates into the first transmission rod (11).
10. A switchgear device according to claim 6 or 7, characterized in that the front end of the inner bore of the hollow pole is flared (111).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110845679.4A CN113745063B (en) | 2021-07-26 | 2021-07-26 | Electromagnetic repulsion mechanism with redundancy design and switch device |
| PCT/CN2021/142805 WO2023005142A1 (en) | 2021-07-26 | 2021-12-30 | Electromagnetic repulsion mechanism having redundancy design and switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110845679.4A CN113745063B (en) | 2021-07-26 | 2021-07-26 | Electromagnetic repulsion mechanism with redundancy design and switch device |
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| Publication Number | Publication Date |
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| CN113745063A true CN113745063A (en) | 2021-12-03 |
| CN113745063B CN113745063B (en) | 2022-12-13 |
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| CN202110845679.4A Active CN113745063B (en) | 2021-07-26 | 2021-07-26 | Electromagnetic repulsion mechanism with redundancy design and switch device |
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| CN (1) | CN113745063B (en) |
| WO (1) | WO2023005142A1 (en) |
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| WO2023005142A1 (en) * | 2021-07-26 | 2023-02-02 | 平高集团有限公司 | Electromagnetic repulsion mechanism having redundancy design and switch device |
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| CN117134599A (en) * | 2023-08-03 | 2023-11-28 | 天津大学 | Environment-friendly rapid GCB topological structure and parallel/off-grid zero-arc flexible operation method adapting to generator |
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| CN113745063B (en) | 2022-12-13 |
| WO2023005142A1 (en) | 2023-02-02 |
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