Two-phase synchronous rapid mechanical switch based on electromagnetic repulsion mechanism

Abstract

The utility model relates to a double-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism. The double-phase synchronous fast mechanical switch comprises the electromagnetic repulsion mechanism, an energy storage mechanism and two vacuum arc extinguish chambers, the two vacuum arc-extinguishing chambers are arranged on the electromagnetic repulsion mechanism, the two vacuum arc-extinguishing chambers are arranged at an interval, and the energy storage mechanism is connected with the electromagnetic repulsion mechanism; the energy storage mechanism discharges to enable the electromagnetic repulsive force mechanism to generate electromagnetic repulsive force so as to drive the moving contacts in the two vacuum arc extinguish chambers to move synchronously, and positive and negative pole double-phase linkage is realized; according to the arrangement, compared with a traditional direct-current circuit breaker device which is provided with independent rapid mechanical switches on the positive electrode and the negative electrode, abnormal loads and fault lines can be rapidly isolated, and the problem of large-scale voltage sag is avoided; in addition, the action consistency of the positive and negative electrode two-path rapid mechanical switch can be ensured, the time deviation is avoided, and the stability and safety performance of the system are improved.

Description

A Two-Phase Synchronous Fast Mechanical Switch Based on Electromagnetic Repulsion Mechanism Technical Field

[0001] This utility model relates to the technical field of DC circuit breaker equipment, and in particular to a two-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism. Background Technology

[0002] Currently, DC circuit breaker equipment consists of two independent sets of equipment for the positive and negative poles, each equipped with an independent fast mechanical switch. Because it is impossible to achieve complete consistency in the assembly, debugging, and mechanical characteristics of a single fast mechanical switch, the overall consistency of the DC circuit breaker equipment is poor, resulting in time deviations during the opening and closing of the positive and negative poles. This poor consistency can have various adverse effects on the system, increase safety hazards, and reduce system stability. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide a dual-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism. Its advantages include ensuring the consistency of the actions of the two fast mechanical switches on the positive and negative poles, avoiding time deviations; and improving system stability and safety performance.

[0004] The above-mentioned utility model objective is achieved through the following technical solution: a two-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism, comprising an electromagnetic repulsion mechanism, an energy storage mechanism, and two vacuum interrupters; both vacuum interrupters are disposed on the electromagnetic repulsion mechanism, and the two vacuum interrupters are spaced apart; the energy storage mechanism is connected to the electromagnetic repulsion mechanism; the energy storage mechanism discharges to cause the electromagnetic repulsion mechanism to generate electromagnetic repulsion, thereby driving the moving contacts in the two vacuum interrupters to move synchronously, realizing positive and negative two-phase linkage.

[0005] Preferably, the dual-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism provided by this utility model includes a support frame, a switching drive mechanism, and two bistable spring retaining mechanisms. The support frame has a first mounting chamber and two second mounting chambers arranged from top to bottom. The switching drive mechanism is located in the first mounting chamber, and the two bistable spring retaining mechanisms are respectively placed in the two second mounting chambers. The two sides of the bottom end of the switching drive mechanism are respectively inserted into the two second mounting chambers and respectively connected to the two bistable spring retaining mechanisms.

[0006] Preferably, the dual-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism provided by this utility model includes a tripping coil, a closing coil, and a repulsion disk in its tripping and closing drive mechanism. The tripping coil is fixed to the inner top plate of the first mounting chamber, and the closing coil is fixed to the inner bottom plate of the first mounting chamber. The tripping coil and the closing coil are arranged correspondingly, with a gap between them. The top of the repulsion disk passes through the tripping coil and is connected to the insulating pull rod of the vacuum interrupter. The bottom of the repulsion disk passes through the closing coil and is inserted into the second mounting chamber and connected to the bistable spring holding mechanism. The repulsion disk can move relative to the tripping coil and the closing coil. Both the tripping coil and the closing coil are connected to the energy storage mechanism. The energy storage mechanism discharges, causing the tripping coil and / or the closing coil to generate electromagnetic repulsion. This electromagnetic repulsion drives the repulsion disk to move, and the repulsion disk drives the moving contacts in the two vacuum interrupters to move synchronously, achieving positive and negative dual-phase linkage.

[0007] Preferably, the dual-phase synchronous fast mechanical switch based on the electromagnetic repulsion mechanism provided by this utility model includes a repulsion disk comprising a disk body and two rods. The two rods are both inserted through the disk body and are spaced apart. Each rod corresponds to a vacuum interrupter. Each rod has an insertion hole at its upper end, and the insertion hole extends downward along the center line of the rod. The bottom end of the insulating pull rod of the vacuum interrupter is inserted into the insertion hole.

[0008] Preferably, the dual-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism provided by this utility model includes an energy storage device and a charging device, wherein the energy storage device is connected to the charging device and the electromagnetic repulsion mechanism; the charging device is used to charge the energy storage device.

[0009] Preferably, the dual-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism provided by this utility model includes an energy storage device comprising a housing, a tripping thyristor, a closing thyristor, and an energy storage controller. The housing forms an accommodating cavity. The bottom ends of both the tripping and closing thyristors are inserted into the accommodating cavity, and the top ends of both extend to the outside of the housing. A tripping capacitor is provided on the tripping thyristor, and a closing capacitor is provided on the closing thyristor. Both the tripping and closing capacitors are located within the accommodating cavity. The energy storage controller is disposed on the outer wall of the housing, and both the tripping and closing thyristors are connected to the energy storage controller. The energy storage controller is used to control the closing and opening of the tripping and closing thyristors.

[0010] Preferably, the dual-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism provided by this utility model includes a support frame comprising a first horizontal plate, a second horizontal plate, two third horizontal plates, and four pairs of support studs. The first horizontal plate and the second horizontal plate are spaced apart from top to bottom, and the space reserved between the first horizontal plate and the second horizontal plate is the first mounting cavity. The two third horizontal plates are placed side by side on the side of the second horizontal plate away from the first horizontal plate, and are spaced apart from each other. The second horizontal plate and the third horizontal plate are spaced apart from top to bottom, and the space reserved between the second horizontal plate and the third horizontal plate is the second mounting cavity. The four pairs of support studs are spaced apart along a first direction of the first horizontal plate. The top of each support stud passes through the third horizontal plate, the second horizontal plate, and the first horizontal plate in sequence and is threadedly connected to the nut. The outer peripheral wall of each support stud is provided with a first limiting boss and a second limiting boss. The bottom end of the third horizontal plate abuts against the top surface of the first limiting boss, and the bottom end of the second horizontal plate abuts against the top surface of the second limiting boss.

[0011] Preferably, the dual-phase synchronous fast mechanical switch based on the electromagnetic repulsion mechanism provided by this utility model has two fixing plates on the first horizontal plate. The two fixing plates are spaced apart along a first direction. The fixing plates are arranged in a one-to-one correspondence with the vacuum interrupter. The bottom end of the insulating shell of the vacuum interrupter is fixed to the corresponding fixing plate. The bottom end of the insulating pull rod of the vacuum interrupter passes through the corresponding fixing plate and is inserted into the opening and closing drive mechanism.

[0012] Preferably, the dual-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism provided by this utility model includes a bistable spring holding mechanism comprising a linkage mechanism and two housings. The two housings are spaced apart within the second mounting cavity. The opposite ends of the linkage mechanism are respectively inserted into the two housings. The linkage mechanism can slide along the cavity of the housing. Each housing cavity is provided with an elastic element. One end of the elastic element is connected to the end of the linkage mechanism inserted into the housing, and the other end of the elastic element is connected to the inner wall of the housing.

[0013] Preferably, the dual-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism provided by this utility model includes a linkage mechanism comprising two first links, two second links, and a slider. The two first links are respectively hinged to opposite ends of the slider. The ends of the two first links away from the slider are respectively hinged to the two second links. The ends of the two second links away from the first links are respectively inserted into the housing. The second links can slide along the cavity of the housing.

[0014] In summary, the beneficial technical effects of this utility model are as follows: The dual-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism provided in this application includes an electromagnetic repulsion mechanism, an energy storage mechanism, and two vacuum interrupters; both vacuum interrupters are disposed on the electromagnetic repulsion mechanism, and the two vacuum interrupters are spaced apart; the energy storage mechanism is connected to the electromagnetic repulsion mechanism; the discharge of the energy storage mechanism causes the electromagnetic repulsion mechanism to generate electromagnetic repulsion, thereby driving the moving contacts in the two vacuum interrupters to move synchronously, realizing the linkage of positive and negative phases; compared with the traditional DC circuit breaker equipment where the positive and negative poles are independent fast mechanical switches, this configuration can quickly isolate abnormal loads and faulty lines, avoiding the occurrence of large-scale voltage sag problems; in addition, it can ensure the consistency of the operation of the two fast mechanical switches on the positive and negative poles, avoid time deviations, and improve the system stability and safety performance. Attached Figure Description

[0015] Figure 1 is a front view of a dual-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism provided in an embodiment of this utility model.

[0016] Figure 2 is a side view of a two-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism provided in an embodiment of this utility model.

[0017] Figure 3 is a schematic diagram of the vacuum interrupter in a dual-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism provided in an embodiment of this utility model.

[0018] Figure 4 is a schematic diagram of the electromagnetic repulsion mechanism in the dual-phase synchronous fast mechanical switch based on the electromagnetic repulsion mechanism provided in the embodiment of this utility model.

[0019] Figure 5 is a schematic diagram of the closing coil or opening coil in a two-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism provided in an embodiment of this utility model.

[0020] Figure 6 is a schematic diagram of the repulsion disk in the dual-phase synchronous fast mechanical switch based on the electromagnetic repulsion mechanism provided in the embodiment of this utility model.

[0021] Figure 7 is a schematic diagram of the charging device in the dual-phase synchronous fast mechanical switch based on the electromagnetic repulsion mechanism provided in the embodiment of this utility model.

[0022] Figure 8 is a schematic diagram of the energy storage device in a dual-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism provided in an embodiment of this utility model.

[0023] In the diagram, 1. Two-phase synchronous fast mechanical switch; 10. Electromagnetic repulsion mechanism; 11. Support frame; 111. First horizontal plate; 1111. Fixed plate; 112. Second horizontal plate; 113. Third horizontal plate; 114. Support stud; 115. First mounting cavity; 116. Second mounting cavity; 12. Opening and closing drive mechanism; 121. Opening coil; 122. Closing coil; 123. Repulsion disk; 1231. Disk body; 1232. Rod body; 13. Bistable spring holding mechanism; 131. Linkage mechanism; 1311, First link; 1312, Second link; 1313, Slider; 132, Housing; 133, First limiting plate; 134, Second limiting plate; 20, Energy storage mechanism; 21, Energy storage device; 211, Housing; 212, Opening thyristor; 2121, Opening capacitor; 213, Closing thyristor; 2131, Closing capacitor; 214, Energy storage controller; 22, Charging device; 30, Vacuum interrupter; 31, Insulating pull rod; 32, Moving contact; 40, First direction. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Referring to Figures 1 and 2, this utility model discloses a dual-phase synchronous fast mechanical switch 1 based on an electromagnetic repulsion mechanism 10, including an electromagnetic repulsion mechanism 10, an energy storage mechanism 20, and two vacuum interrupters 30. Both vacuum interrupters 30 are mounted on the electromagnetic repulsion mechanism 10 and spaced apart. The energy storage mechanism 20 is connected to the electromagnetic repulsion mechanism 10. Discharging the energy storage mechanism 20 causes the electromagnetic repulsion mechanism 10 to generate electromagnetic repulsion, thereby driving the moving contacts 32 in the two vacuum interrupters 30 to move synchronously, achieving dual-phase linkage of positive and negative poles. Compared with traditional DC circuit breaker equipment where the positive and negative poles are independent fast mechanical switches, this configuration can quickly isolate abnormal loads and faulty lines, avoiding large-scale voltage dips. Furthermore, it ensures the consistency of the operation of the two fast mechanical switches, avoiding time deviations and improving system stability and safety performance.

[0026] It should be noted that the structure of the vacuum interrupter 30 is well known to those skilled in the art, and the structure of the vacuum interrupter 30 will not be described in detail here.

[0027] Among them, the two vacuum interrupters 30 are the positive and negative electrode vacuum interrupters 30.

[0028] Referring again to Figures 1 and 4, in this embodiment, the electromagnetic repulsion mechanism 10 includes a support frame 11, a circuit breaker drive mechanism 12, and two bistable spring retaining mechanisms 13. The support frame 11 is provided with a first mounting chamber and two second mounting chambers, which are arranged from top to bottom. The circuit breaker drive mechanism 12 is disposed in the first mounting chamber, and the two bistable spring retaining mechanisms 13 are respectively placed in the two second mounting chambers. The two sides of the bottom end of the circuit breaker drive mechanism 12 are respectively inserted into the two second mounting chambers and respectively connected to the two bistable spring retaining mechanisms 13.

[0029] The two second installation chambers are arranged side by side.

[0030] Specifically, the insulating rods 31 of the two vacuum interrupters 30 and the energy storage mechanism 20 are all connected to the opening and closing drive mechanism 12.

[0031] Referring to Figure 3, the vacuum interrupter 30 is made of epoxy resin casting, which has excellent insulation and electrical performance. It can successfully interrupt a 31.5kA short-circuit current, with a breaking speed of 1.1m / s and a closing speed of 0.6m / s.

[0032] Specifically, the top end of the insulating rod 31 of the vacuum interrupter 30 is inserted into the insulating shell of the vacuum interrupter 30 and connected to the moving contact 32. The bottom end of the insulating rod 31 is located outside the insulating shell and connected to the opening and closing drive mechanism 12. The insulating rod 31 drives the moving contact 32 to move to realize the closing and opening actions.

[0033] Furthermore, in this embodiment, the opening and closing drive mechanism 12 includes an opening coil 121, a closing coil 122, and a repulsion disk 123. The opening coil 121 is fixed to the inner top plate of the first mounting chamber, and the closing coil 122 is fixed to the inner bottom plate of the first mounting chamber. The opening coil 121 and the closing coil 122 are arranged correspondingly, and a gap is left between the opening coil 121 and the closing coil. The top end of the repulsion disk 123 passes through the opening coil 121 and is connected to the insulating pull rod 31 of the vacuum interrupter 30. The bottom end of the repulsion disk 123 passes through the closing coil 122 and is inserted into the second mounting chamber and connected to the bistable spring holding mechanism 13. The repulsion disk 123 can move relative to the opening coil 121 and the closing coil 122. Both the opening coil 121 and the closing coil 122 are connected to the energy storage mechanism 20.

[0034] During use, the energy storage mechanism 20 discharges, causing the opening coil 121 and / or closing coil 122 to generate electromagnetic repulsion. The electromagnetic repulsion drives the repulsion disk 123 to move, and the repulsion disk 123 drives the moving contacts 32 in the two vacuum interrupters 30 to move synchronously, realizing the positive and negative poles two-phase linkage.

[0035] Referring to Figure 5, both the opening coil 121 and the closing coil 122 are made by vacuum epoxy casting after coil winding. The opening coil 121 and the closing coil 122 have good insulation performance and can provide the electromagnetic repulsion required for positive and negative pole linkage, thus ensuring the rapid opening and closing of the two-phase synchronous fast mechanical switch 1.

[0036] Referring again to Figure 6, in this embodiment, the repulsion disk 123 includes a disk body 1231 and two rods 1232. Both rods 1232 are inserted through the disk body 1231 and are spaced apart. Each rod 1232 corresponds to a vacuum interrupter 30. Each rod 1232 has an insertion hole at its upper end. The insertion hole extends downward along the center line of the rod 1232. The bottom end of the insulating pull rod 31 of the vacuum interrupter 30 is used to insert into the insertion hole.

[0037] Specifically, the center line of the rod 1232 is perpendicular to the disk 1231, the top of the rod 1232 is connected to the insulating pull rod 31 of the vacuum interrupter 30, and the bottom of the rod 1232 is used to connect to the bistable spring holding mechanism 13.

[0038] Referring again to Figure 4, in this embodiment, the support frame 11 includes a first horizontal plate 111, a second horizontal plate 112, two third horizontal plates 113, and four pairs of support studs 114. The first horizontal plate 111 and the second horizontal plate 112 are spaced apart from top to bottom, and the space reserved between the first horizontal plate 111 and the second horizontal plate 112 is the first mounting cavity 115. The two third horizontal plates 113 are placed side by side on the side of the second horizontal plate 112 away from the first horizontal plate 111, and are spaced apart from each other. The second horizontal plate 112 and the third horizontal plate 113 are spaced apart from top to bottom, and the space reserved between the second horizontal plate 112 and the third horizontal plate 113 is the second mounting cavity 116.

[0039] Specifically, the trip coil 121 is disposed on the bottom surface of the first horizontal plate 111, and the closing coil 122 is disposed on the top surface of the second horizontal plate 112. In order to ensure the gap between the trip coil 121 and the closing coil 122, a plurality of support rods are provided between the trip coil 121 and the closing coil 122, and the plurality of support rods are arranged at intervals around the circumference of the trip coil 121. Four pairs of support studs 114 are spaced apart along the first direction 40 of the first horizontal plate 111. The top of the support studs 114 passes through the third horizontal plate 113, the second horizontal plate 112 and the first horizontal plate 111 in sequence and is threadedly connected to the nut. The outer peripheral wall of the support studs 114 is provided with a first limiting boss and a second limiting boss. The bottom end of the third horizontal plate 113 abuts against the top surface of the first limiting boss, and the bottom end of the second horizontal plate 112 abuts against the top surface of the second limiting boss. By setting the first limiting boss and the second limiting boss, the first limiting boss is used to restrict the third horizontal plate 113, and the second limiting boss is used to restrict the second horizontal plate 112.

[0040] It should be noted that the first direction 40 of the first horizontal plate 111 is the length direction of the first horizontal plate 111. Each pair of support screws includes two support screws.

[0041] Two rods 1232 are spaced apart on the disc 1231 along the first direction 40. The disc 1231 is parallel to the first horizontal plate 111. The disc 1231 is located in the gap between the trip coil 121 and the closing line, and the disc 1231 can move along the gap.

[0042] Specifically, the tripping coil 121 is provided with two first through holes, which are spaced apart along the first direction 40. The first horizontal plate 111 is provided with two second through holes, which are spaced apart along the first direction 40. The first and second through holes are each set to correspond one-to-one with the rod 1232, and the first through hole is connected to its corresponding second through hole. The closing coil 122 is provided with two third through holes, which are spaced apart along the first direction 40. The second horizontal plate 112 is provided with two fourth through holes, which are spaced apart along the first direction 40. The third and fourth through holes are each set to correspond one-to-one with the rod 1232, and the third through hole is connected to its corresponding fourth through hole.

[0043] The top end of the rod 1232 passes through the first through hole and is inserted into the second through hole. The bottom end of the rod 1232 passes through the third through hole and the fourth through hole in sequence and is inserted into the second mounting cavity and connected to the bistable spring holding mechanism 13.

[0044] In order to fix the vacuum interrupter 30 on the first horizontal plate 111, two fixing plates 1111 are provided on the first horizontal plate 111. The two fixing plates 1111 are spaced apart along the first direction 40. The fixing plates 1111 are corresponding to the vacuum interrupter 30 one by one. The bottom end of the insulating shell of the vacuum interrupter 30 is fixed to the corresponding fixing plate 1111. The bottom end of the insulating pull rod 31 of the vacuum interrupter 30 passes through the corresponding fixing plate 1111 and is inserted into the opening and closing drive mechanism 12.

[0045] Specifically, the bottom end of the insulating pull rod 31 of the vacuum interrupter 30 passes through the corresponding fixing plate 1111 and is inserted into the corresponding rod body 1232.

[0046] Referring again to Figure 4, in this embodiment, the bistable spring holding mechanism 13 includes a linkage mechanism 131 and two housings 132. The two housings 132 are spaced apart in the second mounting cavity. The opposite ends of the linkage mechanism are respectively inserted into the two housings 211. The linkage mechanism 131 can slide along the cavity of the housing 211. Each housing 211 cavity is provided with an elastic element. One end of the elastic element is connected to the end of the linkage mechanism 131 inserted into the housing 211, and the other end of the elastic element is connected to the inner wall of the housing 211. By providing the elastic element, when the dual-phase synchronous fast mechanical switch 1 is in the closed state, the elastic element is in a compressed state. The restoring force of the elastic element is applied to the linkage mechanism 131, so that the linkage mechanism 131 has an upward thrust, thereby preventing the moving contact 32 of the vacuum interrupter 30 from moving downward under its own weight.

[0047] Specifically, the housing 211 has an opening at one end facing the linkage mechanism 131, and the opening communicates with the cavity of the housing 211. The end of the linkage mechanism 131 passes through the opening and is inserted into the cavity of the housing 211.

[0048] To prevent the end of the linkage mechanism 131 from sliding out of the cavity of the housing 211, both ends of the linkage mechanism 131 are provided with limiting flanges, the size of which is larger than the size of the opening.

[0049] For example, the elastic element can be a helical spring; of course, the elastic element can also be a resilient cylinder.

[0050] Furthermore, in this embodiment, the linkage mechanism 131 includes two first linkages 1311, two second linkages 1312, and a slider 1313. The two first linkages 1311 are respectively hinged to the opposite ends of the slider 1313. The ends of the two first linkages 1311 away from the slider 1313 are respectively hinged to the two second linkages 1312. The ends of the two second linkages 1312 away from the first linkages 1311 are respectively inserted into the housing 132. The second linkages 1312 can slide along the cavity of the housing 211.

[0051] Specifically, the end of the second link 1312 facing away from the first link 1311 is provided with a limiting flange, one end of the elastic element is connected to the limiting flange, and the other end of the elastic element is connected to the inner wall of the housing 211.

[0052] The bottom end of the rod 1232 passes through the third and fourth through holes and is inserted into the groove on the slider 1313 to connect the rod 1232 and the slider 1313. During the closing action, the energy storage mechanism 20 discharges, causing the closing coil 122 to generate an electromagnetic repulsion force. This electromagnetic repulsion force acts on the disc 1231, causing the disc 1231 to move upwards. Simultaneously, the disc 1231 drives the two moving contacts 32 to move upwards, achieving rapid closing. At the same time, the disc 1231 also drives the two moving contacts 32 to move upwards. Slider 1313 slides upward, driving the first connecting rod 1311 to rotate. The first connecting rod 1311 drives the second connecting rod 1312 to rotate. When slider 1313 passes the dead point of the connecting rod mechanism 131, slider 1313 continues to slide upward to the preset position. At this time, the elastic element is in the compression device, and the restoring force of the elastic element is applied to the connecting rod mechanism 131 so that the connecting rod mechanism 131 has an upward thrust, thereby preventing the moving contact 32 of the vacuum interrupter 30 from moving downward under its own gravity.

[0053] To limit the slider 1313, the bistable spring retaining mechanism 13 also includes a first limiting plate 133 and a second limiting plate 134. The first limiting plate 133 and the second limiting plate 134 are both disposed in the second mounting cavity. The first limiting plate 133 is fixed to the bottom surface of the second horizontal plate 112, and the second limiting plate 134 is fixed to the top surface of the third horizontal plate 113. The first limiting plate 133 and the second limiting plate 134 are correspondingly disposed. The slider 1313 is located between the first limiting plate 133 and the second limiting plate 134. A fifth through hole is provided on the first limiting plate 133. The fifth through hole communicates with the fourth through hole. During the installation process, the bottom end of the rod 1232 on the repulsion plate 123 passes through the third through hole, the fourth through hole and the fifth through hole in sequence and then connects with the slider 1313.

[0054] When the two-phase synchronous fast mechanical switch 1 is in the closed state, the top surface of the slider 1313 contacts the bottom surface of the first limit block; when the two-phase synchronous fast mechanical switch 1 is in the open state, the bottom surface of the slider 1313 contacts the top surface of the second limit block.

[0055] Referring to Figure 2, in this embodiment, the energy storage mechanism 20 includes an energy storage device 21 and a charging device 22. The energy storage device 21 is connected to the charging device 22, and the energy storage device 21 is connected to the electromagnetic repulsion mechanism 10. The charging device 22 is used to charge the energy storage device 21.

[0056] Specifically, both the opening coil 121 and the closing coil 122 are connected to the energy storage device 21. The energy storage device 21 is used to provide power for the opening and closing drive mechanism 12, so as to realize the rapid opening and closing of the two-phase synchronous fast mechanical switch 1.

[0057] The energy storage device 21 can provide a voltage of up to 1500V to the opening coil 121 and the closing coil 122 to generate electromagnetic repulsion force, thus providing energy for the repulsion mechanism. The energy storage device 21 uses optical signals and encoded transmission to effectively ensure signal stability and prevent electromagnetic interference.

[0058] Referring to Figure 7, the charging device 22 has a charging voltage setting function, which can set the charging voltage according to the actual working conditions to achieve a suitable opening and closing time.

[0059] Referring again to Figure 8, in this embodiment, the energy storage device 21 includes a housing 211, a tripping thyristor 212, a closing thyristor 213, and an energy storage controller 214. The housing 211 forms an accommodating cavity. The bottom ends of the tripping thyristor 212 and the closing thyristor 213 are inserted into the accommodating cavity, and the top ends of the tripping thyristor 212 and the closing thyristor 213 extend to the outside of the housing 211. A tripping capacitor 2121 is provided on the tripping thyristor 212, and a closing capacitor 2131 is provided on the closing thyristor 213. Both the tripping capacitor 2121 and the closing capacitor 2131 are located within the accommodating cavity. The energy storage controller 214 is disposed on the outer wall of the housing 211. Both thyristor 212 and closing thyristor 213 are connected to energy storage controller 214. Energy storage controller 214 is used to control the opening and closing of opening thyristor 212 and closing thyristor 213. By setting opening capacitor 2121 and closing capacitor 2131 (collectively referred to as energy storage capacitors), eddy currents are generated by discharging the opening coil 121 or closing coil 122 through the energy storage capacitors. A repulsive force is generated between the opening coil 121 or closing coil 122 and the repulsion disk 123, which drives the repulsion disk 123 to move, thereby completing the switching action. By designing the opening coil 121 or closing coil 122 and the repulsion disk 123, two-phase synchronous movement is achieved to ensure the consistency of positive and negative pole switching.

[0060] The charging device 22 allows for freely setting the charging voltage of the opening capacitor 2121 and the closing capacitor 2131, and has the function of real-time monitoring of capacitor voltage. It can accept opening and closing commands from the background control system and respond quickly within 20µs.

[0061] Specifically, the tripping thyristor 212 is connected to the tripping coil 121, and the closing thyristor 213 is connected to the closing coil 122.

[0062] When the tripping action is performed, the energy storage controller 214 receives the tripping command, the tripping thyristor 212 closes, the tripping capacitor 2121 discharges, and the tripping coil 121 generates an electromagnetic repulsion force, which acts on the repulsion disk 123. The repulsion disk 123 moves downward, completing the tripping action. The tripping coil 121, the repulsion disk 123, and the closing coil 122 are all designed as an integrated unit to achieve positive and negative two-phase linkage and ensure the consistency of positive and negative poles. When the tripping action is about to be completed, the closing capacitor 2131 discharges to perform electromagnetic buffering to prevent the repulsion disk 123 from impacting the closing coil 122.

[0063] It should be noted that when the dual-phase synchronous fast mechanical switch 1 is operating normally, the charging device 22 and the energy storage device 21 continue to operate to store energy for the opening and closing actions of the dual-phase synchronous fast mechanical switch 1.

[0064] The working principle of the dual-phase synchronous fast mechanical switch 1 based on the electromagnetic repulsion mechanism 10 provided in this embodiment is as follows: When the dual-phase synchronous fast mechanical switch 1 is in the open state, the energy storage controller 214 receives the closing command, the closing thyristor 213 closes, the closing capacitor 2131 discharges, and the closing coil 122 generates electromagnetic repulsion force acting on the repulsion disk 123. Under the action of the electromagnetic repulsion force, the repulsion disk 123 pushes the moving contacts 32 of the two vacuum interrupters 30 to move, and finally realizes the rapid closing of the vacuum interrupters 30. After the closing capacitor 2131 is discharged, the closing thyristor 213 is disconnected, the charging device 22 detects that the voltage of the closing capacitor 2131 is lower than the set value, and charges the closing capacitor 2131. When the voltage value of the closing capacitor 2131 reaches the set value, the charging device 22 stops charging.

[0065] When the two-phase synchronous fast mechanical switch 1 is in the closed state, the energy storage controller 214 receives a tripping command. The tripping thyristor 212 closes first, the tripping capacitor 2121 discharges, and the tripping coil 121 generates an electromagnetic repulsion force acting on the repulsion disk 123. Under the action of the electromagnetic repulsion force, the repulsion disk 123 pulls the moving contact 32 of the positive and negative vacuum interrupter 30 to move, realizing the rapid tripping of the vacuum interrupter 30. 3ms after the tripping thyristor 212 closes, the closing thyristor 213 closes, the closing capacitor 2131 discharges, and the closing coil 122... An electromagnetic repulsive force is generated, which acts on the downwardly moving repulsive disk 123 to buffer it and complete the entire opening action. After the opening capacitor 2121 and the closing capacitor 2131 have discharged, the opening thyristor 212 and the closing thyristor 213 are disconnected. The charging device 22 detects that the voltage of the opening capacitor 2121 and the closing capacitor 2131 is lower than the set value, and charges the opening capacitor 2121 and the closing capacitor 2131. When the voltage value of the opening capacitor 2121 and the closing capacitor 2131 reaches the set value, the charging device 22 stops charging.

[0066] The dual-phase synchronous fast mechanical switch 1 based on the electromagnetic repulsion mechanism 10 provided in this application includes the electromagnetic repulsion mechanism 10, the energy storage mechanism 20, and two vacuum interrupters 30. Both vacuum interrupters 30 are mounted on the electromagnetic repulsion mechanism 10 and spaced apart. The energy storage mechanism 20 is connected to the electromagnetic repulsion mechanism 10. Discharging the energy storage mechanism 20 causes the electromagnetic repulsion mechanism 10 to generate electromagnetic repulsion, thereby driving the moving contacts 32 in the two vacuum interrupters 30 to move synchronously, achieving dual-phase linkage between the positive and negative poles. Compared with traditional DC circuit breaker equipment where the positive and negative poles are independent fast mechanical switches, this configuration can quickly isolate abnormal loads and faulty lines, avoiding large-scale voltage dips. Furthermore, it ensures the consistency of the operation of the two fast mechanical switches, avoiding time deviations and improving system stability and safety performance.

[0067] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0068] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A two-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism, characterized in that: It includes an electromagnetic repulsion mechanism, an energy storage mechanism, and two vacuum interrupters; both vacuum interrupters are disposed on the electromagnetic repulsion mechanism and are spaced apart; the energy storage mechanism is connected to the electromagnetic repulsion mechanism; the energy storage mechanism discharges to cause the electromagnetic repulsion mechanism to generate electromagnetic repulsion, thereby driving the moving contacts in the two vacuum interrupters to move synchronously, realizing positive and negative two-phase linkage.

2. The two-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism according to claim 1, characterized in that: The electromagnetic repulsion mechanism includes a support frame, a circuit breaker drive mechanism, and two bistable spring retaining mechanisms. The support frame has a first mounting chamber and two second mounting chambers arranged from top to bottom. The circuit breaker drive mechanism is located in the first mounting chamber, and the two bistable spring retaining mechanisms are respectively placed in the two second mounting chambers. The two sides of the bottom end of the circuit breaker drive mechanism are respectively inserted into the two second mounting chambers and respectively connected to the two bistable spring retaining mechanisms.

3. The two-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism according to claim 2, characterized in that: The opening and closing drive mechanism includes an opening coil, a closing coil, and a repulsion disk. The opening coil is fixed to the inner top plate of the first mounting chamber, and the closing coil is fixed to the inner bottom plate of the first mounting chamber. The opening coil and the closing coil are arranged correspondingly, with a gap between them. The top of the repulsion disk passes through the opening coil and is connected to the insulating pull rod of the vacuum interrupter. The bottom of the repulsion disk passes through the closing coil and is inserted into the second mounting chamber, and is connected to the bistable spring holding mechanism. The repulsion disk can move relative to the opening coil and the closing coil. Both the opening coil and the closing coil are connected to the energy storage mechanism. The energy storage mechanism discharges, causing the opening coil and / or the closing coil to generate electromagnetic repulsion. This electromagnetic repulsion drives the repulsion disk to move, and the repulsion disk drives the moving contacts in the two vacuum interrupters to move synchronously, achieving positive and negative phase linkage.

4. The two-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism according to claim 3, characterized in that: The repulsion disk includes a disk body and two rods. The two rods are both inserted through the disk body and are spaced apart. Each rod corresponds to a vacuum interrupter. Each rod has an insertion hole at its upper end. The insertion hole extends downward along the center line of the rod. The bottom end of the insulating pull rod of the vacuum interrupter is inserted into the insertion hole.

5. The two-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism according to claim 1, characterized in that: The energy storage mechanism includes an energy storage device and a charging device. The energy storage device is connected to the charging device and the electromagnetic repulsion mechanism. The charging device is used to charge the energy storage device.

6. The two-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism according to claim 5, characterized in that: The energy storage device includes a housing, a tripping thyristor, a closing thyristor, and an energy storage controller. The housing forms a cavity, and the bottom ends of both the tripping and closing thyristors are inserted into the cavity, while their top ends extend to the outside of the housing. A tripping capacitor is mounted on the tripping thyristor, and a closing capacitor is mounted on the closing thyristor. Both the tripping and closing capacitors are located within the cavity. The energy storage controller is mounted on the outer wall of the housing, and both the tripping and closing thyristors are connected to it. The energy storage controller controls the opening and closing of the tripping and closing thyristors.

7. The two-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism according to claim 2, characterized in that: The support frame includes a first horizontal plate, a second horizontal plate, two third horizontal plates, and four pairs of support studs. The first horizontal plate and the second horizontal plate are spaced apart from top to bottom, and the space reserved between the first horizontal plate and the second horizontal plate is the first mounting cavity. The two third horizontal plates are placed side by side on the side of the second horizontal plate away from the first horizontal plate, and are spaced apart from each other. The second horizontal plate and the third horizontal plate are spaced apart from top to bottom, and the space reserved between the second horizontal plate and the third horizontal plate is the second mounting cavity. The four pairs of support studs are spaced apart along a first direction of the first horizontal plate. The top of each support stud passes through the third horizontal plate, the second horizontal plate, and the first horizontal plate in sequence and is threadedly connected to the nut. The outer peripheral wall of each support stud is provided with a first limiting boss and a second limiting boss. The bottom end of the third horizontal plate abuts against the top surface of the first limiting boss, and the bottom end of the second horizontal plate abuts against the top surface of the second limiting boss.

8. The two-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism according to claim 7, characterized in that: Two fixing plates are provided on the first horizontal plate. The two fixing plates are spaced apart along the first direction. The fixing plates are arranged in a one-to-one correspondence with the vacuum interrupter. The bottom end of the insulating shell of the vacuum interrupter is fixed to the corresponding fixing plate. The bottom end of the insulating pull rod of the vacuum interrupter passes through the corresponding fixing plate and is inserted into the opening and closing drive mechanism.

9. The two-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism according to claim 2, characterized in that: The bistable spring retaining mechanism includes a linkage mechanism and two housings. The two housings are spaced apart in the second mounting cavity. The two opposite ends of the linkage mechanism are respectively inserted into the two housings. The linkage mechanism can slide along the cavity of the housing. Each housing cavity is provided with an elastic element. One end of the elastic element is connected to the end of the linkage mechanism inserted into the housing, and the other end of the elastic element is connected to the inner wall of the housing.

10. The two-phase synchronous fast mechanical switch based on an electromagnetic repulsion mechanism according to claim 9, characterized in that: The linkage mechanism includes two first links, two second links, and a slider. The two first links are respectively hinged to the opposite ends of the slider. The ends of the two first links away from the slider are respectively hinged to the two second links. The ends of the two second links away from the first links are respectively inserted into the housing. The second links can slide along the cavity of the housing.

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