CN214254245U - Intelligent permanent magnet vacuum contactor - Google Patents

Abstract

The utility model discloses an intelligent permanent magnetism vacuum contactor, including the grudging post, the vacuum bubble is used to the contactor, the flexible coupling, an insulator, the overtravel spring, permanent magnetic mechanism and intelligent control ware, the stationary contact end of vacuum bubble is fixed in the insulating bed frame of grudging post through the copper bar for the contactor, the flexible coupling is fixed in the moving contact end of vacuum bubble for the contactor, the insulator lower extreme is arranged in to the overtravel spring, terminal surface under the connecting rod fixed connection overtravel spring of grudging post, the connecting rod slides along vertical direction in the grudging post, the connecting rod below is fixed with the support, the expansion end of permanent magnetic mechanism is fixed in the support, intelligent control ware is used for controlling permanent magnetic mechanism's closing and separating brake coil current direction. The utility model discloses the structure is retrencied, small, the consumption is little, to the operational environment who needs frequent break current, can realize quick response, and is high-efficient reliable.

Description

Intelligent permanent magnet vacuum contactor

Technical Field

The utility model relates to a middling pressure electrical switchgear field, concretely relates to intelligent permanent magnetism vacuum contactor.

Background

The vacuum contactor is used as a medium-voltage electrical control switch device, utilizes a vacuum arc extinguishing chamber to extinguish arc, can frequently switch on and off normal working current, is suitable for controlling and protecting equipment such as a motor, a transformer, reactive compensation and the like, and is particularly suitable for occasions needing to switch on and off a circuit remotely and frequently start and stop the motor.

Most of the existing medium-voltage vacuum contactors are spring operating mechanisms or electromagnetic operating mechanisms, the spring operating mechanisms have the defects of multiple parts, high precision requirement and complex assembly, and the electromagnetic operating mechanisms need an external power supply to maintain a switch-on state, so that the power consumption is high.

SUMMERY OF THE UTILITY MODEL

To the defect that exists among the prior art, the utility model aims to provide an intelligent permanent magnetism vacuum contactor, through the improvement on the overall structure, can realize quick response, high-efficient reliable to the operational environment who needs frequent break-make current.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

an intelligent permanent magnet vacuum contactor comprises a vertical frame, a vacuum bubble for a contactor, a flexible connection, an insulator, an over travel spring, a permanent magnet mechanism and an intelligent controller, wherein the vertical frame is provided with an insulating base frame, a static contact end of the vacuum bubble for the contactor is fixed on the insulating base frame through a copper bar, the flexible connection is fixed at a moving contact end of the vacuum bubble for the contactor, the insulator penetrates through an opening of the flexible connection and is screwed in a moving contact end of the vacuum bubble for the contactor, the over travel spring is arranged at the lower end of the insulator, the vertical frame is further provided with a connecting rod, the connecting rod is fixedly connected with the lower end face of the over travel spring, the connecting rod slides in the vertical direction in the vertical frame, a support is fixed below the connecting rod, the permanent magnet mechanism is fixed at the bottom of the vertical frame, and the permanent magnet mechanism comprises an outer frame and a switching coil arranged in the outer frame, Permanent magnet, separating brake spring and move the iron core, it is equipped with the actuation portion that the level set up and the extension of vertical setting to move the iron core, it locates to close separating brake coil the permanent magnet top, the permanent magnet is located actuation portion top, the extension by the breach department at frame top stretches out, separating brake spring housing is located the extension top, the support is fixed in the extension top, intelligent control ware is located inside the grudging post, intelligent control ware is used for control close separating brake coil current direction.

Further, the utility model provides an among the intelligent permanent magnetism vacuum contactor, the grudging post still is equipped with crossbeam, left side board, right side board and bottom plate, the crossbeam both sides are fixed respectively left side board and right side board, the bottom plate is fixed in the bottom of left side board and right side board, insulating bed frame is fixed in the crossbeam top, permanent magnetic mechanism is fixed in the bottom plate top.

Further, the utility model provides an among the intelligent permanent magnetism vacuum contactor, left side board and right side board all are equipped with the bar groove along vertical direction, the both ends of connecting rod all are equipped with the copper sheathing, the copper sheathing is spacing in the bar groove.

Further, the utility model provides an intelligent permanent magnetism vacuum contactor still includes manual trip gear, manual trip gear includes dropout support, trip shaft and dropout plectrum, the dropout support is fixed in permanent magnetic mechanism's frame top, the dropout shaft set up in the through-hole on the dropout support, the dropout plectrum is fixed in on the dropout shaft, the dropout plectrum can follow the dropout shaft rotates.

Further, the utility model provides an intelligent permanent magnetism vacuum contactor still includes auxiliary switch, auxiliary switch is fixed in on the bottom plate, inside spring and the contact of being equipped with of auxiliary switch, still be equipped with the clamp plate on the connecting rod, the clamp plate is located directly over the auxiliary switch upper end contact point.

Further, the utility model provides an among the intelligent permanent magnetism vacuum contactor, auxiliary switch and clamp plate all are equipped with two sets ofly, and wherein the inside contact of first group auxiliary switch is normally open contact, and the inside contact of second group auxiliary switch is normally closed contact.

Further, in an intelligent permanent magnet vacuum contactor provided by the utility model, the intelligent controller comprises a switching power supply circuit, a switching-on energy storage capacitor, a switching-off energy storage capacitor, a switching-on switching device, a switching-off switching device, an auxiliary power supply circuit, a main control module, a switching-off signal processing module, a switching-on signal processing module, a switching-off driving circuit and a switching-on driving circuit, wherein the input end of the switching power supply circuit is connected with an external circuit, the output end of the switching power supply circuit is connected with the switching-on switching device through the switching-on energy storage capacitor, the output end of the switching power supply circuit is connected with the switching-off switching device through the switching-off energy storage capacitor, the switching-on switching device and the switching-off switching device are respectively connected with one end of the switching-on/off coil, and the output end of the switching power supply circuit is connected with the main control module through the auxiliary power supply circuit, the main control module is respectively connected with the opening signal processing module and the closing signal processing module, the main control module is connected with the driving end of the closing switch device through the closing driving circuit, and the main control module is connected with the driving end of the opening switch device through the opening driving circuit.

Furthermore, in the intelligent permanent magnet vacuum contactor provided by the utility model, the switching-on switching device comprises a first IGBT tube and a second IGBT tube, the switching-off switching device comprises a third IGBT tube and a fourth IGBT tube, the output end of the switching power supply circuit is connected with the positive pole of the switching-on energy storage capacitor, the collector of the first IGBT tube, the collector of the third IGBT tube and the positive pole of the switching-off energy storage capacitor, the emitter of the first IGBT tube is connected with the collector of the second IGBT tube and the first end of the switching-on and switching-off coil, the emitter of the third IGBT tube is connected with the collector of the fourth IGBT tube and the second end of the switching-on and switching-off coil, the negative pole of the switching-on energy storage capacitor, the emitter of the second IGBT tube, the emitter of the fourth IGBT tube and the negative pole of the switching-off energy storage capacitor are all grounded, the switching-on driving circuit is connected with the grid of the first IGBT tube and the grid of the second IGBT tube, and the opening driving circuit is connected with the third IGBT tube grid and the fourth IGBT tube grid.

Further, the utility model provides an among the intelligent permanent magnetism vacuum contactor, intelligent control ware still includes separating brake signal detection module, combined floodgate signal detection module and alarm output circuit, separating brake signal detection module connects the inside contact of the auxiliary switch of second group, the inside contact of first group auxiliary switch is connected to combined floodgate signal detection module, host system connects respectively separating brake signal detection module, combined floodgate signal detection module and alarm output circuit.

Further, the utility model provides an among the intelligent permanent magnetism vacuum contactor, intelligent control ware still includes LED display circuit, host system connects LED display circuit.

Compared with the prior art, the utility model has the advantages of:

the utility model is kept by the permanent magnetic force in the closing state, does not need the continuous external power supply, and has the characteristics of small power consumption and high reliability; when in brake opening, the internal brake opening spring releases energy and the electromagnetic force in the same direction is used for moving the movable iron core to the brake opening terminal position, so that the action response speed is high. The utility model discloses manual tripping device can accomplish the outside manual separating brake of accident situation, and auxiliary switch provides auxiliary contact and can instructs separating brake, combined floodgate condition in place, does not target in place and can produce the warning, has effectively improved the use reliability. The utility model discloses the structure is retrencied, small, the consumption is little, to the operational environment who needs frequent break current, can realize quick response, and is high-efficient reliable.

Drawings

Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a permanent magnet mechanism in an embodiment of the present invention in a closing state.

Fig. 3 is a schematic structural diagram of a permanent magnet mechanism in an embodiment of the present invention in an open state.

Fig. 4 is a schematic view of a closing state according to an embodiment of the present invention.

Fig. 5 is a schematic view of the opening state of the embodiment of the present invention.

Fig. 6 is a schematic structural view of a manual tripping device in an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of an intelligent controller in an embodiment of the present invention.

Fig. 8 is a schematic circuit diagram of a part of an intelligent controller in an embodiment of the present invention.

In the figure: 1-vertical frame, 11-insulating base frame, 12-copper bar, 13-connecting rod, 14-support, 131-copper sleeve, 132-pressing plate, 15-beam, 16-left side plate, 17-right side plate, 18-bottom plate, 2-vacuum bubble for contactor, 3-flexible connection, 4-insulator, 5-overtravel spring, 6-permanent magnetic mechanism, 61-outer frame, 62-closing and opening coil, 63-permanent magnet, 64-opening spring, 65-movable iron core, 651-attraction part, 652-extension part, 7-intelligent controller, 701-switching power supply circuit, 702-closing energy storage capacitor, 703-opening energy storage capacitor, 704-closing switch device, 705-opening switch device, 706-auxiliary power supply circuit, 707-main control module, 708-switching-off signal processing module, 709-switching-on signal processing module, 710-switching-off driving circuit, 711-switching-on driving circuit, 712-switching-off signal detection module, 713-switching-on signal detection module, 714-alarm output circuit, 715-LED display circuit, 8-manual tripping device, 81-tripping bracket, 82-tripping shaft, 83-tripping plectrum and 9-auxiliary switch.

Detailed Description

The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1 to 3, the utility model provides an intelligent permanent magnet vacuum contactor, a serial communication port, including grudging post 1, vacuum bubble 2 for the contactor, the flexible coupling 3, insulator 4, overrun spring 5, permanent magnetic mechanism 6 and intelligent control 7, grudging post 1 is equipped with insulating bed frame 11, the stationary contact end of vacuum bubble 2 for the contactor is fixed in insulating bed frame 11 through copper bar 12, flexible coupling 3 is fixed in the movable contact end of vacuum bubble 2 for the contactor, insulator 4 passes the trompil of flexible coupling 3 and screws in the movable contact end of vacuum bubble 2 for the contactor, overrun spring 5 arranges the insulator 4 lower extreme in, grudging post 1 still is equipped with connecting rod 13, connecting rod 13 fixed connection overrun spring 5 lower extreme, connecting rod 13 slides along vertical direction in grudging post 1, connecting rod 13 below is fixed with frame 14, permanent magnetic mechanism 6 is fixed in grudging post 1 bottom, permanent magnetic mechanism 6 includes 61 and sets up in 61 inside close split coil 62, overrun coil 62, Permanent magnet 63, separating brake spring 64 and movable iron core 65, movable iron core 65 is equipped with the actuation portion 651 of level setting and the extension 652 of vertical setting, closing separating brake coil 62 locates the permanent magnet 63 top, actuation portion 651 top is located to permanent magnet 63, extension 652 stretches out by the breach department at frame 61 top, extension 652 top is located to separating brake spring 64 cover, support 14 is fixed in extension 652 top, inside intelligent control ware 7 located grudging post 1, intelligent control ware 7 is used for the control to close separating brake coil 62 current direction.

In the present embodiment, the insulating base frame 11 is used to fix the vacuum bubbles 2 for the contactor; the contactor uses the vacuum bubble 2 as a key component for switching on and off the working current, and the static contact is used as a working current input end; the soft connection 3 is used as a working current wiring output end; the insulator 4 ensures the electrical insulation of the flexible connection 3 from the ground; the overtravel spring 5 compresses and stores energy to provide the brake-separating speed; the permanent magnet mechanism 6 is used as a key part for switching on and off movement; the intelligent controller 7 controls the switching-on and switching-off actions of the permanent magnetic mechanism.

Referring to fig. 4, in the closing process of this embodiment, the intelligent controller 7 controls the current of the opening and closing coil 62, so that the magnetic field generated by the opening and closing coil 62 can attract the movable iron core 65 to move upward against the opening spring 64 and compress the stored energy, the permanent magnet 63 magnetically attracts the movable iron core 65 to complete closing, and the movable iron core moves upward by 8mm in the closing state. In the switching-on process, the support 14 and the connecting rod 13 move upwards together for 6mm, so that the moving and static contacts of the vacuum bubble 2 for the contactor are in contact switching-on, the moving iron core 65 continues to move upwards for 2mm, the connecting rod 13 compresses the over-travel spring 5 for 2mm, and the working current flows to the flexible connection 3 from the static contact of the vacuum bubble 2 for the contactor.

Referring to fig. 5, in the opening process of this embodiment, the intelligent controller 7 controls the current of the opening and closing coil 62, so that the magnetic field generated by the opening and closing coil 62 repels the permanent magnet 63, the opening spring 64 instantly releases the compression amount, the movable iron core 65 is forced to separate the permanent magnet 63, and moves downward to the terminal position to complete the opening, and the movable iron core 63 moves downward by 8 mm. In the brake-separating process, the movable iron core, the external support 14 and the connecting rod 13 move downwards for 2mm together, the over travel spring 5 releases 2mm of compression, the brake-separating speed is provided, the movable iron core 65 continues to move downwards for 6mm, the contactor is separated and separated by the vacuum bubble 2 movable and fixed contacts, and the working current is cut off.

The embodiment of the utility model keeps by the permanent magnetic force in the closing state, does not need the continuous external power supply, and has the characteristics of low power consumption and high reliability; when in brake opening, the internal brake opening spring releases energy and the electromagnetic force in the same direction is used for moving the movable iron core to the brake opening terminal position, so that the action response speed is high.

Further, referring to fig. 1, as a modified embodiment, the stand 1 is further provided with a cross beam 15, a left side plate 16, a right side plate 17 and a bottom plate 18, the left side plate 16 and the right side plate 17 are respectively fixed on two sides of the cross beam 15, the bottom plate 18 is fixed on the bottom of the left side plate 16 and the right side plate 17, the insulating base frame 11 is fixed above the cross beam 15, and the permanent magnet mechanism 6 is fixed above the bottom plate 18.

Further, as shown in fig. 1, as a modified embodiment, the left side plate 16 and the right side plate 17 are both provided with a strip-shaped groove along the vertical direction, both ends of the connecting rod 13 are provided with copper sleeves 131, and the copper sleeves 131 are limited in the strip-shaped grooves. In this embodiment, the strip-shaped groove plays a guiding role, so that the connecting rod 13 moves along the vertical direction.

Further, referring to fig. 6, as an improved embodiment, the intelligent permanent magnet vacuum contactor further includes a manual tripping device 8, where the manual tripping device 8 includes a tripping bracket 81, a tripping shaft 82, and a tripping plate 83, the tripping bracket 81 is fixed above the outer frame 61 of the permanent magnet mechanism 6, the tripping shaft 82 is disposed in a through hole on the tripping bracket 81, the tripping plate 83 is fixed on the tripping shaft 82, and the tripping plate 83 can rotate along with the tripping shaft 82.

In the present embodiment, the manual tripping device 8 is arranged to perform external manual tripping in an accident situation. When the permanent magnet mechanism 6 is in a closing state, the external manual power rotates the tripping shaft 82 to drive the tripping shifting piece 83 to rotate downwards to act on the bracket 11, so that the permanent magnet mechanism 6 is separated from the closing position, and the overtravel spring 5 releases compression to enable the contactor to complete opening.

Further, referring to fig. 1, as an improved embodiment, the intelligent permanent magnet vacuum contactor further includes an auxiliary switch 9, the auxiliary switch 9 is fixed on the bottom plate 18, a spring and a contact are arranged inside the auxiliary switch 9, a pressing plate 132 is further arranged on the connecting rod 13, and the pressing plate 132 is located right above the contact point at the upper end of the auxiliary switch 9.

In this embodiment, the auxiliary switch 9 functions to provide an auxiliary contact. The auxiliary switch 9 utilizes the characteristic of an internal spring of the auxiliary switch, in the closing process, the pressure plate 132 moves upwards along with the connecting rod 13, the contact point of the upper end of the auxiliary switch 9 is separated from the pressure plate 132, the internal spring is released, and the contact state is changed; during the opening process, the pressing plate 132 moves downwards along with the connecting rod 13, the pressing plate 132 compresses the upper contact point of the auxiliary switch 9, the spring inside the auxiliary switch 9 is compressed, and the contact state is changed.

Further, referring to fig. 1, as a modified embodiment, the auxiliary switch 9 and the pressure plate 132 are provided with two sets, wherein the contacts inside the first set of auxiliary switch 9 are normally open contacts, and the contacts inside the second set of auxiliary switch 9 are normally closed contacts.

In this embodiment, before the switch-on, the contacts in the first group of auxiliary switches 9 are in the on state, and the contacts in the second group of auxiliary switches 9 are in the off state, and in this state, the switch-on operation can be performed; when the closing process is finished, the contacts inside the first group of auxiliary switches 9 change to the closed state, and the contacts inside the second group of auxiliary switches 9 change to the open state, and in this state, it indicates that the closing is in place. Before opening the brake, the contacts in the first group of auxiliary switches 9 are in a closed state, the contacts in the second group of auxiliary switches 9 are in an open state, and the brake opening operation can be carried out in the closed state; when the opening process is finished, the contacts in the first group of auxiliary switches 9 are changed into an open state, and the contacts in the second group of auxiliary switches 9 are changed into a closed state, and in the closed state, the opening process is in place.

Further, referring to fig. 7, as an improved embodiment, the intelligent controller 7 includes a switching power circuit 701, a switching-on energy storage capacitor 702, a switching-off energy storage capacitor 703, a switching-on switching device 704, a switching-off switching device 705, an auxiliary power circuit 706, a main control module 707, a switching-off signal processing module 708, a switching-on signal processing module 709, a switching-off driving circuit 710, and a switching-on driving circuit 711, wherein an input terminal of the switching power circuit 701 is connected to an external circuit, an output terminal of the switching power circuit 701 is connected to the switching-on switching device 704 through the switching-on energy storage capacitor 702, an output terminal of the switching power circuit 701 is connected to the switching-off switching device 705 through the switching-off energy storage capacitor 703, both the switching-on switching device 704 and the switching-off switching device are connected to the switching-on switching coil 62, an output terminal of the switching power circuit 701 is connected to the main control module 707 through the auxiliary power circuit 706, the main control module is respectively connected to the switching-off signal processing module 708 and the switching-on signal processing module 709, the main control module 707 is connected to the driving end of the closing switch device 704 through a closing drive circuit 711, and the main control module 707 is connected to the driving end of the opening switch device 705 through an opening drive circuit 710.

In this embodiment, the switching power supply circuit 701 is adapted to the input of the working power supply AC220V/DC110V/DC220V, outputs a stable voltage to charge the closing energy storage capacitor 702 and the opening energy storage capacitor 703, and provides an input for the auxiliary power supply circuit 706; the auxiliary power circuit 706 provides a dc power supply with a voltage of 3.3V to the main control module 707. After receiving the closing signal through the closing signal processing module 709, the intelligent controller 7 controls the closing switch device 704 through the closing driving circuit 711, so that the closing energy storage capacitor 702 releases the current from the output end to the closing and opening coil 62 of the permanent magnet mechanism 6, and the closing and opening coil generates a magnetic field to attract the movable iron core 65 to open the closing process. After the intelligent controller 7 receives the opening signal through the opening signal processing module 708, the opening switching device 705 is controlled by the opening driving circuit 710, so that the opening energy storage capacitor 710 releases a direct current opposite to the closing from the output end to the opening/closing coil 62 of the permanent magnet mechanism 6, the opening/closing coil 62 generates a magnetic field opposite to the permanent magnet 63, and the opening spring releases energy to enable the movable iron core 65 to be forced to separate the permanent magnet 63 to open the opening process.

In some embodiments, the auxiliary power supply circuit 706 also provides a +24V dc voltage output.

In some embodiments, the master control module 707 is implemented using a mainstream controller chip.

Further, referring to fig. 8, as a modified embodiment, the closing switch device 704 includes a first IGBT Q1 and a second IGBT Q2, the opening switch device 705 includes a third IGBT Q3 and a fourth IGBT Q4, the output terminal of the switching power supply circuit 701 is connected to the positive terminal of the closing energy storage capacitor 702, the collector terminal of the first IGBT Q1, the collector terminal of the third IGBT Q3 and the positive terminal of the opening energy storage capacitor 703, the emitter terminal of the first IGBT Q1 is connected to the collector terminal of the second IGBT Q2 and the first terminal of the opening and closing coil 62, the emitter terminal of the third IGBT Q3 is connected to the collector terminal of the fourth IGBT Q4 and the second terminal of the opening and closing coil 62, the negative terminal of the closing energy storage capacitor 702, the emitter of the second IGBT tube Q2, the emitter of the fourth IGBT tube Q4 and the negative electrode of the opening energy storage capacitor 703 are all grounded, the closing drive circuit 711 is connected with the grid of the first IGBT tube Q1 and the grid of the second IGBT tube Q2, and the opening drive circuit 710 is connected with the grid of the third IGBT tube Q3 and the grid of the fourth IGBT tube Q4.

In this embodiment, when waiting for the closing and opening states, the second IGBT Q2 and the fourth IGBT Q4 are both in the on state, and the first IGBT Q1 and the third IGBT Q3 are both in the off state. When receiving a closing signal, the main control module 707 controls the second IGBT tube Q2 to be turned off first through the closing drive circuit 711, and then controls the first IGBT tube Q1 to be turned on, and the closing energy storage capacitor 702 discharges electricity to the closing and opening coil 62 of the permanent magnet mechanism 6 through the first IGBT tube Q1 and then to the fourth IGBT tube Q4 to form a loop, and the fourth IGBT tube Q4 is always in a conducting state in the process. When receiving the opening signal, the main control module 707 controls the fourth IGBT Q4 to turn off through the opening driving circuit 710, and then controls the third IGBT Q3 to turn on, and the opening energy storage capacitor 703 discharges electricity to the opening and closing coil 62 of the permanent magnet mechanism 6 through the third IGBT Q3 and then to the second IGBT Q2, so as to form a loop, and the second IGBT Q2 is always in a conducting state in this process.

Further, referring to fig. 1 and 7, as an improved embodiment, the intelligent controller 7 further includes a switching-off signal detection module 712, a switching-on signal detection module 713, and an alarm output circuit 714, where the switching-off signal detection module 712 is connected to contacts inside the second set of auxiliary switches 9, the switching-on signal detection module 713 is connected to contacts inside the first set of auxiliary switches 9, and the main control module 707 is connected to the switching-off signal detection module 712, the switching-on signal detection module 713, and the alarm output circuit 714, respectively.

In this embodiment, the two sets of auxiliary switches 9 are used for indicating the closing in-place condition and the opening in-place condition. When the switching-on process is finished, if the intelligent controller 7 receives that the contacts in the second group of auxiliary switches 9 are in the on state through the switching-off signal detection module 712 and receives that the contacts in the first group of auxiliary switches 9 are in the off state through the switching-on signal detection module 713, the switching-on is in place, the intelligent controller 7 does not generate alarm output, otherwise, the intelligent controller 7 generates alarm output. When the switching-off process is finished, if the intelligent controller 7 receives that the contacts in the second group of auxiliary switches 9 are in a closed state through the switching-off signal detection module 712 and receives that the contacts in the first group of auxiliary switches 9 are in an open state through the switching-on signal detection module 713, it indicates that the switching-off is in place, and the intelligent controller 7 does not generate alarm output, otherwise, the intelligent controller 7 generates alarm output.

Further, referring to fig. 7, as a modified embodiment, the intelligent controller 7 further includes an LED display circuit 715, and the main control module 707 is connected to the LED display circuit 715. The LED display circuit 715 is used for indicating the current working state of the intelligent controller and the switching-on and switching-off states.

The present invention is not limited to the above preferred embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is within the scope of protection.

Claims (10)

1. An intelligent permanent magnet vacuum contactor is characterized by comprising a vertical frame (1), a vacuum bubble (2) for the contactor, a flexible connection (3), an insulator (4), an overtravel spring (5), a permanent magnet mechanism (6) and an intelligent controller (7), wherein the vertical frame (1) is provided with an insulating base frame (11), a static contact end of the vacuum bubble (2) for the contactor is fixed on the insulating base frame (11) through a copper bar (12), the flexible connection (3) is fixed on a moving contact end of the vacuum bubble (2) for the contactor, the insulator (4) penetrates through an opening of the flexible connection (3) and is screwed into the moving contact end of the vacuum bubble (2) for the contactor, the overtravel spring (5) is arranged at the lower end of the insulator (4), the vertical frame (1) is further provided with a connecting rod (13), and the connecting rod (13) is fixedly connected with the lower end face of the overtravel spring (5), the connecting rod (13) is arranged in the stand (1) and slides along the vertical direction, a support (14) is fixed below the connecting rod (13), the permanent magnet mechanism (6) is fixed at the bottom of the stand (1), the permanent magnet mechanism (6) comprises an outer frame (61), a closing and opening brake coil (62), a permanent magnet (63), an opening brake spring (64) and a movable iron core (65) which are arranged in the outer frame (61), the movable iron core (65) is provided with a suction part (651) which is horizontally arranged and an extension part (652) which is vertically arranged, the closing and opening brake coil (62) is arranged above the permanent magnet (63), the permanent magnet (63) is arranged above the suction part (651), the extension part (652) is extended out from the notch at the top of the outer frame (61), the opening brake spring (64) is sleeved at the top of the extension part (652), and the support (14) is fixed at the top of the extension part (652), the intelligent controller (7) is arranged in the vertical frame (1), and the intelligent controller (7) is used for controlling the current direction of the switching-on/off coil (62).

2. An intelligent permanent magnet vacuum contactor as claimed in claim 1, wherein the vertical frame (1) is further provided with a cross beam (15), a left side plate (16), a right side plate (17) and a bottom plate (18), the left side plate (16) and the right side plate (17) are respectively fixed on two sides of the cross beam (15), the bottom plate (18) is fixed on the bottom of the left side plate (16) and the right side plate (17), the insulating base frame (11) is fixed above the cross beam (15), and the permanent magnet mechanism (6) is fixed above the bottom plate (18).

3. The intelligent permanent magnet vacuum contactor according to claim 2, wherein the left side plate (16) and the right side plate (17) are provided with a strip-shaped groove along a vertical direction, the two ends of the connecting rod (13) are provided with copper sleeves (131), and the copper sleeves (131) are limited in the strip-shaped grooves.

4. The intelligent permanent magnet vacuum contactor according to claim 1, further comprising a manual tripping device (8), wherein the manual tripping device (8) comprises a tripping bracket (81), a tripping shaft (82) and a tripping plate (83), the tripping bracket (81) is fixed above the outer frame (61) of the permanent magnet mechanism (6), the tripping shaft (82) is disposed in a through hole on the tripping bracket (81), the tripping plate (83) is fixed on the tripping shaft (82), and the tripping plate (83) can rotate with the tripping shaft (82).

5. An intelligent permanent magnet vacuum contactor as claimed in claim 2, further comprising an auxiliary switch (9), wherein said auxiliary switch (9) is fixed on said bottom plate (18), a spring and a contact are provided inside said auxiliary switch (9), a pressing plate (132) is further provided on said connecting rod (13), and said pressing plate (132) is located right above the contact point of the upper end of said auxiliary switch (9).

6. An intelligent permanent magnet vacuum contactor as claimed in claim 5, wherein the auxiliary switches (9) and the pressure plate (132) are provided in two sets, wherein the contacts inside the first set of auxiliary switches (9) are normally open contacts and the contacts inside the second set of auxiliary switches (9) are normally closed contacts.

7. The intelligent permanent magnet vacuum contactor according to claim 6, wherein the intelligent controller (7) comprises a switching power supply circuit (701), a switching-on energy storage capacitor (702), a switching-off energy storage capacitor (703), a switching-on switching device (704), a switching-off switching device (705), an auxiliary power supply circuit (706), a main control module (707), a switching-off signal processing module (708), a switching-on signal processing module (709), a switching-off driving circuit (710), and a switching-on driving circuit (711), wherein the input end of the switching power supply circuit (701) is connected with an external circuit, the output end of the switching power supply circuit (701) is connected with the switching-on switching device (704) through the switching-on energy storage capacitor (702), and the output end of the switching power supply circuit (701) is connected with the switching-off switching device (705) through the switching-off energy storage capacitor (703), the switching-on switching device (704) and the switching-off switching device (705) are connected with one end of the switching-on/off coil (62) respectively, the output end of the switching power supply circuit (701) is connected with the main control module (707) through the auxiliary power supply circuit (706), the main control module (707) is connected with the switching-off signal processing module (708) and the switching-on signal processing module (709) respectively, the main control module (707) is connected with the driving end of the switching-on switching device (704) through the switching-on driving circuit (711), and the main control module (707) is connected with the driving end of the switching-off switching device (705) through the switching-off driving circuit (710).

8. An intelligent permanent magnet vacuum contactor as claimed in claim 7, wherein the closing switch device (704) comprises a first IGBT (Q1) and a second IGBT (Q2), the opening switch device (705) comprises a third IGBT (Q3) and a fourth IGBT (Q4), the output end of the switching power supply circuit (701) is connected to the positive electrode of the closing energy storage capacitor (702), the collector electrode of the first IGBT (Q1), the collector electrode of the third IGBT (Q3) and the positive electrode of the opening energy storage capacitor (703), the emitter electrode of the first IGBT (Q1) is connected to the collector electrode of the second IGBT (Q2) and the first end of the opening and closing coil (62), the emitter electrode of the third IGBT (Q3) is connected to the collector electrode of the fourth IGBT (Q4) and the second end of the opening and closing coil (62), the negative electrode of the closing energy storage capacitor (702), the emitter electrode of the second IGBT (Q2) and the emitter electrode of the opening and the second IGBT (Q2), The emitting electrode of the fourth IGBT (Q4) and the negative electrode of the opening energy-storage capacitor (703) are both grounded, the closing drive circuit (711) is connected with the grid electrode of the first IGBT (Q1) and the grid electrode of the second IGBT (Q2), and the opening drive circuit (710) is connected with the grid electrode of the third IGBT (Q3) and the grid electrode of the fourth IGBT (Q4).

9. The intelligent permanent magnet vacuum contactor according to claim 7, wherein the intelligent controller (7) further comprises a switching-off signal detection module (712), a switching-on signal detection module (713) and an alarm output circuit (714), the switching-off signal detection module (712) is connected to the contacts inside the second set of auxiliary switches (9), the switching-on signal detection module (713) is connected to the contacts inside the first set of auxiliary switches (9), and the main control module (707) is respectively connected to the switching-off signal detection module (712), the switching-on signal detection module (713) and the alarm output circuit (714).

10. An intelligent permanent magnet vacuum contactor as claimed in claim 7, wherein said intelligent controller (7) further comprises an LED display circuit (715), said main control module (707) being connected to said LED display circuit (715).

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