Isolation switch, power conversion device and power supply system

Abstract

The invention provides an isolating switch, a power conversion device and a power supply system, and relates to the technical field of electrical equipment. The disconnecting switch comprises a mounting shell, and a lock catch assembly, a handle assembly, a first driving mechanism and a second driving mechanism which are arranged in the mounting shell. The lock catch assembly is used for being in transmission connection with the contact assembly, the handle assembly is movably arranged on the mounting shell, and the first driving mechanism can enable the operating mechanism to be tripped; the second driving mechanism is arranged on the mounting shell, the second driving mechanism cannot enable the operating mechanism to be tripped, and the second driving mechanism is used for locking the handle assembly, or the second driving mechanism is used for enabling the handle assembly to be in transmission fit with the first driving assembly to be released. The first driving mechanism and the second driving mechanism provide double guarantees for the disconnecting switch, and the disconnecting switch can adapt to different circuit fault scenes, so that the adaptability of the disconnecting switch is effectively improved, and the stability and reliability of a power supply system are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and in particular to an isolating switch, a power conversion device and a power supply system. Background Art

[0002] In the power system, the isolating switch is an important electrical device, which is mainly used to disconnect the circuit in time when there is a circuit fault or other abnormal state, so as to ensure the safe operation of the entire circuit system. Through its built-in driving mechanism, the isolating switch can respond quickly and perform the circuit breaking operation, effectively preventing the spread of faults and protecting the safety of equipment and personnel.

[0003] However, the existing isolating switches have a simple structure and cannot effectively deal with complex circuit faults. In addition, after the circuit-breaking operation is completed, the inspection and repair process is cumbersome and time-consuming, which increases maintenance costs and affects the stability and reliability of power supply. Summary of the invention

[0004] The present invention provides an isolating switch, a power conversion device and a power supply system, which can adapt to different circuit fault scenarios, effectively improve the adaptability of the isolating switch, thereby ensuring the stability and reliability of the power supply system; in addition, the resetting process of the driving mechanism is efficient and convenient, which improves the operating efficiency of the isolating switch.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides an isolating switch, the isolating switch comprising a handle, an operating mechanism and a plurality of switch units, the handle being capable of driving the operating mechanism to move so as to close or open the plurality of switch units, the operating mechanism comprising:

[0007] Install the housing;

[0008] A lock assembly, the lock assembly is arranged on the mounting housing, and the lock assembly is used to be in transmission connection with the contact assembly to drive the contact assembly to close or open the switch;

[0009] A handle assembly, wherein the handle assembly is movably disposed on the mounting housing, and the handle assembly can drive the lock assembly to move so as to close or open the contact assembly;

[0010] A first driving mechanism, the first driving mechanism is fixedly disposed on the mounting housing, and the first driving mechanism is in transmission cooperation with the handle assembly, and is used to reset under the drive of the handle assembly and drive the lock assembly to buckle again, or to drive the lock assembly to release, so as to open the contact assembly;

[0011] The second driving mechanism is fixedly disposed on the mounting shell, the second driving mechanism cannot disengage the locking assembly, the second driving mechanism is used to lock the handle assembly, or the second driving mechanism is used to release the transmission cooperation between the handle assembly and the first driving mechanism.

[0012] In an optional embodiment, the handle assembly includes a handle rod and a slide plate, the handle rod is transmission-connected to the slide plate, and the slide plate is provided with an extension portion;

[0013] The first driving mechanism includes a first driving member and a transmission member, wherein the first driving member is fixedly disposed on the mounting housing and is used to drive the transmission member to move so as to drive the locking assembly to be released;

[0014] The extension portion is located in the extension direction of the movement path of the transmission member. When the first driving mechanism receives a signal to drive the locking assembly to disengage, the extension portion is used to drive the transmission member to move in the opposite direction under the drive of the slide plate, so that the transmission member drives the locking assembly to be locked again and the first driving member is reset.

[0015] In an optional embodiment, the first driving mechanism includes a first driving member and a transmission member, and the first driving member is fixedly disposed on the mounting housing;

[0016] The first driving member is used to drive the transmission member to move so as to drive the locking assembly to be released; and after being released, the transmission member can automatically reset to an initial state.

[0017] In an optional embodiment, the second driving mechanism includes a second driving member, a driving rod and a clamping member;

[0018] The clamping member is movably disposed on the mounting housing, the driving rod is in transmission cooperation with the clamping member, and the second driving member is used to drive the driving rod to move so that the clamping member is in clamping cooperation with the handle assembly;

[0019] The driving rod is provided with a first reset portion, which extends out of the mounting shell and is used to drive the driving rod to move in the opposite direction under the action of an external force to reset to an initial state, so that the clamping member is disengaged from the handle assembly.

[0020] In an optional embodiment, the second driving mechanism includes a second driving member, a driving rod and a clamping member;

[0021] The clamping member is movably arranged on the mounting shell, the driving rod is in transmission cooperation with the clamping member, and the second driving member is used to drive the driving rod to move so that the clamping member is in clamping cooperation with the handle assembly; or in the case where the first driving mechanism drives the locking assembly to disengage, the second driving member is also used to receive an external reset signal to drive the driving rod to move in the opposite direction to reset to an initial state so that the clamping member is disengaged from the handle assembly.

[0022] In an optional embodiment, the second driving mechanism further comprises a first elastic member, the driving rod is provided with a first abutting portion, the clamping member is provided with a second abutting portion, and the slide plate of the handle assembly is provided with a clamping groove;

[0023] When the second driving member is in an initial state, the first abutting portion abuts against the second abutting portion, and the first elastic member is arranged between the mounting housing and the holding member in a compressed state;

[0024] The second driving member drives the driving rod to move so that the first abutting portion is disengaged from the second abutting portion, so that the holding member moves toward the handle assembly and is embedded in the holding slot under the action of the first elastic member.

[0025] In an optional embodiment, the second driving mechanism further includes a second driving member, a driving rod and a reset member, the second driving member is fixedly disposed on the mounting housing, and the reset member is movably disposed on the slide plate of the handle assembly;

[0026] When the second driving mechanism is in an initial state, the reset member is located in the extension direction of the motion path of the first driving mechanism, so that the first driving mechanism can be reset under the drive of the handle assembly and drive the lock assembly to buckle again;

[0027] The second driving member is used to drive the driving rod to move, so as to drive the reset member away from the extension direction of the movement path of the first driving mechanism, so as to release the transmission cooperation between the handle assembly and the first driving mechanism;

[0028] The driving rod is provided with a second reset portion, which extends out of the mounting housing and is used to drive the driving rod to move in the reverse direction under the action of an external force so as to reset to an initial state.

[0029] In an optional embodiment, when the second driving mechanism is in an initial state, the first driving mechanism is in transmission cooperation with the handle assembly;

[0030] The second driving mechanism is used to release the transmission cooperation between the handle assembly and the first driving mechanism; or after the first driving mechanism drives the lock assembly to be disengaged, the second driving mechanism is also used to receive an external reset signal to reset to an initial state.

[0031] In an optional embodiment, the second driving mechanism includes a second driving member, a driving rod and a reset member, the second driving member is fixedly disposed on the mounting housing, and the reset member is movably disposed on the slide plate of the handle assembly;

[0032] When the second driving mechanism is in an initial state, the reset member is located in the extension direction of the motion path of the first driving mechanism, so that the first driving mechanism can be reset under the drive of the handle assembly and drive the lock assembly to buckle again;

[0033] The second driving member is used to drive the driving rod to move, so as to drive the resetting member to move away from the extension direction of the movement path of the first driving mechanism, so as to release the transmission cooperation between the handle assembly and the first driving mechanism; or when the first driving mechanism drives the locking assembly to disengage, the second driving member is also used to receive an external resetting signal to drive the driving rod to move in the opposite direction to reset to the initial state.

[0034] In an optional embodiment, the second driving mechanism further includes a second elastic member, the driving rod is provided with a third abutment portion, and the reset member is provided with a fourth abutment portion;

[0035] In the initial state of the second driving mechanism, the third abutting portion abuts against the fourth abutting portion, and the second elastic member is arranged between the fourth abutting portion and the slide plate of the handle assembly in a compressed state;

[0036] The second driving member is used to drive the driving rod to move so that the third abutting portion is disengaged from the fourth abutting portion, so that the reset member is away from the extension direction of the movement path of the first driving mechanism under the action of the second elastic member.

[0037] In a second aspect, the present invention provides a power conversion device, comprising a chassis, a control unit and an isolating switch as described in any one of the aforementioned embodiments; the handle is exposed outside the chassis for user operation, and the reset button is inside the chassis; the control unit is electrically connected to the first drive mechanism and the second drive mechanism, and is used to send a trip signal to the first drive mechanism and / or the second drive mechanism when a line fault occurs.

[0038] In a third aspect, the present invention provides a power supply system, comprising a power conversion device, a control unit and an isolating switch as described in any one of the aforementioned embodiments; the control unit is independent of the power conversion device, the isolating switch is installed in the power conversion device, and the handle is exposed outside the power conversion device; the control unit is electrically connected to the first drive mechanism and the second drive mechanism through the power conversion device, and is used to send a tripping signal to the first drive mechanism and / or the second drive mechanism when a line fault occurs.

[0039] The beneficial effects of the isolating switch, power conversion device and power supply system provided by the embodiments of the present invention include: providing double protection for the isolating switch through the first driving mechanism and the second driving mechanism, and being able to adapt to different circuit fault scenarios, thereby effectively improving the adaptability of the isolating switch, thereby ensuring the stability and reliability of the power supply system; in addition, the resetting process of the driving mechanism is efficient and convenient, thereby improving the operating efficiency of the isolating switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 A schematic diagram of the structure of an isolating switch provided in an embodiment of the present invention;

[0042] Figure 2 An exploded view of a first embodiment of an isolating switch provided in an embodiment of the present invention;

[0043] Figure 3 A partial structural diagram of a first embodiment of an isolating switch provided in an embodiment of the present invention;

[0044] Figure 4 A cross-sectional view of a first embodiment of an isolating switch provided in an embodiment of the present invention;

[0045] Figure 5 A schematic structural diagram of a first embodiment of a second driving mechanism provided in an embodiment of the present invention;

[0046] Figure 6 An exploded view of a second embodiment of an isolating switch provided in an embodiment of the present invention;

[0047] Figure 7 A schematic diagram of a first state of a second embodiment of an isolating switch provided in an embodiment of the present invention;

[0048] Figure 8This is a schematic diagram of the second state of the second embodiment of the isolating switch provided in an embodiment of the present invention.

[0049] Icons: 10-isolating switch; 100-mounting housing; 200-locking assembly; 300-handle assembly; 310-slide plate; 311-extension portion; 312-slot; 320-handle rod; 400-first driving mechanism; 410-first driving member; 420-transmission member; 421-first actuating portion; 422-connecting portion; 423-second actuating portion; 500-second driving mechanism; 510-second driving member; 520-driving rod; 521-first reset portion; 522-second reset portion; 523-first abutting portion; 524-third abutting portion; 530-holding member; 531-second abutting portion; 540-first elastic member; 550-reset member; 551-fourth abutting portion; 560-second elastic member. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0053] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0054] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0055] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0056] In the power system, the isolating switch is an important electrical device, which is mainly used to disconnect the circuit in time when there is a circuit fault or other abnormal state, so as to ensure the safe operation of the entire circuit system. Through its built-in driving mechanism, the isolating switch can respond quickly and perform the circuit breaking operation, effectively preventing the spread of faults and protecting the safety of equipment and personnel.

[0057] However, the existing isolating switches have a simple structure and cannot effectively deal with complex circuit faults. In addition, after the circuit-breaking operation is completed, the inspection and repair process is cumbersome and time-consuming, which increases maintenance costs and affects the stability and reliability of power supply.

[0058] Based on the problems existing in the prior art, please refer to Figures 1 to 8 The embodiment of the present invention provides an isolating switch 10, which is applied to a power supply system, and is particularly applicable to equipment such as a power conversion device. The isolating switch 10 provided by the present invention can adapt to different circuit fault scenarios, effectively improving the adaptability of the isolating switch 10, thereby ensuring the stability and reliability of the power supply system; in addition, the reset process of the driving mechanism is efficient and convenient, which improves the operating efficiency of the isolating switch 10.

[0059] In this embodiment, the isolating switch includes a handle, an operating mechanism and a plurality of switch units. The handle can drive the operating mechanism to move so as to close or open the plurality of switch units, wherein the switch unit includes a contact assembly.

[0060] For details, see Figures 1 to 5 The operating mechanism includes a mounting shell 100 and a lock assembly 200, a handle assembly 300, a first driving mechanism 400 and a second driving mechanism 500 arranged in the mounting shell 100.

[0061] The locking assembly 200 is used for transmission connection with the contact assembly, and the locking assembly 200 is used for transmission connection with the contact assembly to drive the contact assembly to open in the tripped state.

[0062] The handle assembly 300 can be movably arranged on the installation shell 100, and the handle assembly 300 is in transmission cooperation with the first driving mechanism 400. Therefore, the first driving mechanism 400 can drive the lock assembly 200 to be buckled again under the drive of the handle assembly 300 to facilitate the closing of the contact assembly. The first driving mechanism 400 can also directly drive the lock assembly 200 to be disengaged to drive the contact assembly to be opened; the second driving mechanism 500 is arranged on the installation shell 100, and the second driving mechanism 500 is used to lock the handle assembly 300, or the second driving mechanism 500 is used to release the transmission cooperation between the handle assembly 300 and the first driving mechanism 400.

[0063] It can be understood that the first drive mechanism 400 has two working states, namely, the initial state and the start-up state. After the first drive mechanism 400 receives the actuation signal of a simple fault, it switches from the initial state to the start-up state. At this time, the first drive mechanism 400 simultaneously drives the lock mechanism to trip, and thereby drives the contact assembly from the closed state to the open state through the lock mechanism, thereby realizing timely disconnection of the circuit and ensuring safe operation of the power supply system.

[0064] It can be understood that the first driving mechanism 400 and the handle assembly 300 can be selectively transmission-coordinated, that is, the first driving mechanism 400 can be transmission-coordinated with the handle assembly 300, or there may be no transmission connection relationship between the two.

[0065] Specifically, when the first drive mechanism 400 and the handle assembly 300 are in transmission cooperation and the first drive mechanism 400 is in the starting state, the handle assembly 300 is driven to move by an external force. While the handle assembly 300 drives the lock assembly 200 to be buckled again, it can also drive the first drive mechanism 400 to reset from the starting state to the initial state, thereby simplifying the resetting operation of the first drive mechanism 400.

[0066] When there is no transmission connection between the first drive mechanism 400 and the handle assembly 300 and the first drive mechanism 400 is in the starting state, an actuation signal of a complex fault can be sent to the second drive mechanism 500 to lock the handle assembly 300 through the second drive mechanism 500 to prevent it from moving. At this time, the handle assembly 300 cannot drive the contact assembly to close, so as to ensure that the handle assembly 300 is unlocked after the complex fault is eliminated, thereby further improving the safety performance of the disconnector 10;

[0067] Alternatively, when the first drive mechanism 400 and the handle assembly 300 are in transmission cooperation and the first drive mechanism 400 is in a started state, after sending an actuation signal of a complex fault to the second drive mechanism 500, the handle assembly 300 and the first drive mechanism 400 can be released from the transmission cooperation relationship through the second drive mechanism 500. In this case, even if the handle assembly 300 is rotated, the first drive mechanism 400 cannot be reset, and the lock assembly 200 cannot be locked again, thereby further improving the safety performance of the isolating switch 10.

[0068] It can be seen that the isolating switch 10 provided by the present invention provides double protection for the isolating switch 10 through the first driving mechanism 400 and the second driving mechanism 500, and can adapt to different circuit fault scenarios, thereby effectively improving the adaptability of the isolating switch 10, thereby ensuring the stability and reliability of the power supply system; in addition, the resetting process of the driving mechanism is efficient and convenient, which improves the operating efficiency of the isolating switch 10.

[0069] Further, the handle assembly 300 includes a handle rod 320 and a slide plate 310, the handle rod 320 is in transmission connection with the slide plate 310, and the slide plate 310 is provided with an extension portion 311. It can be understood that the handle rod 320 is connected to the handle, and the handle is screwed by external force to drive the handle rod 320 to move, so that the slide plate 310 can be driven to slide relative to the mounting housing 100.

[0070] The first driving mechanism 400 includes a first driving member 410 and a transmission member 420. The first driving member 410 is fixedly disposed on the mounting housing 100 and is used to drive the transmission member 420 to move, so as to drive the lock assembly 200 to be released, and then drive the contact assembly to be opened through the lock assembly 200.

[0071] Specifically, after the first drive member 410 receives the actuation signal of a simple fault, the first drive member 410 is converted from the initial state to the starting state, the output end of the first drive member 410 extends, and the output end drives the transmission member 420 to move, so that the transmission member 420 drives the lock assembly 200 to be disengaged, and then drives the contact assembly to be opened through the lock assembly 200.

[0072] The extension portion 311 is located in the extension direction of the movement path of the transmission member 420. The extension portion 311 is used to drive the transmission member 420 to move in the opposite direction under the drive of the slide plate 310, so that the transmission member 420 drives the locking assembly 200 to buckle again and reset the first driving member 410.

[0073] It can be seen that after the fault problem is checked and solved, the handle rod 320 can be screwed to drive the slide plate 310 to slide, and the extension part 311 can abut against the transmission member 420 and drive the transmission member 420 to move in the opposite direction, so as to drive the locking mechanism to lock again through the transmission member 420, thereby achieving the closing of the contact assembly, and synchronously drive the output end of the first drive member 410 to retract through the transmission member 420 to reset to the initial state.

[0074] That is to say, after the first driving mechanism 400 is started, it can be reset by manually turning the knob handle assembly 300, and simultaneously drive the lock assembly 200 to buckle again.

[0075] Of course, in other embodiments of the present invention, resetting can also be performed by automatic resetting, thereby realizing remote operation.

[0076] Specifically, the first driving member 410 is used to drive the transmission member 420 to move, so as to drive the lock assembly 200 to be released; after the lock assembly 200 is released, the transmission member 420 can automatically reset to the initial state. Optionally, a reset elastic member can be provided at the transmission member 420, so as to drive the transmission member 420 to move in the opposite direction through the reset elastic member after the lock assembly 200 is released, so as to drive the lock assembly 200 to be released again and reset the first driving member 410.

[0077] It is worth mentioning that the transmission member 420 includes a first actuating portion 421, a connecting portion 422 and a second actuating portion 423 which are connected in sequence. The first actuating portion 421 is connected to the output end of the first driving member 410, and the extension portion 311 is located in the extension direction of the movement path of the first actuating portion 421. That is to say, the extension portion 311 can abut against the first actuating portion 421 under the drive of the slide plate 310 and drive it to move in the reverse direction, reset the first driving member 410, and drive the connecting portion 422 and the second actuating portion 423 to move in the synchronous direction, so that the second actuating portion 423 abuts against the locking assembly 200, and finally drives the locking assembly 200 to be buckled again.

[0078] Furthermore, the second driving mechanism 500 includes a second driving member 510 , a driving rod 520 and a clamping member 530 .

[0079] The clamping member 530 is movably disposed on the mounting housing 100 , the driving rod 520 is in transmission cooperation with the clamping member 530 , and the second driving member 510 is used to drive the driving rod 520 to move so that the clamping member 530 is in clamping cooperation with the handle assembly 300 .

[0080] It can be seen that after the second driving member 510 receives the actuation signal of the complex fault, the second driving member 510 can drive the driving rod 520 to extend, and the driving rod 520 can drive the clamping member 530 to clamp and cooperate with the slide plate 310 of the handle assembly 300, so as to lock the slide plate 310.

[0081] The driving rod 520 is provided with a first reset portion 521, which extends out of the shell and is used to drive the driving rod 520 to move in the opposite direction relative to the second driving member 510 under the action of external force to reset to the initial state, so that the clamping member 530 is disengaged from the handle assembly 300.

[0082] That is, after the second driving mechanism 500 is started, the driving rod 520 can be reset by manually pulling the first reset portion 521 to retract it to the first driving member 410 .

[0083] Of course, in other embodiments of the present invention, resetting can also be performed by automatic resetting, thereby realizing remote operation.

[0084] Specifically, the second driving member 510 drives the driving rod 520 to move and extend so that the clamping member 530 is clamped and cooperated with the handle assembly 300; when the first driving mechanism 400 drives the locking assembly 200 to disengage, the second driving member 510 can also drive the driving rod 520 to move in the opposite direction to retract after receiving an external reset signal, so as to reset to the initial state, so that the clamping member 530 is disengaged from the handle assembly 300.

[0085] Furthermore, the second driving mechanism 500 further includes a first elastic member 540 , the driving rod 520 is provided with a first abutting portion 523 , the clamping member 530 is provided with a second abutting portion 531 , and the slide plate 310 of the handle assembly 300 is provided with a clamping groove 312 .

[0086] When the second driving member 510 is in the initial state, that is, the driving rod 520 is retracted relative to the second driving member 510 , the first abutting portion 523 abuts against the second abutting portion 531 , and the first elastic member 540 is arranged in a compressed state between the mounting shell 100 and the clamping member 530 .

[0087] After the second driving member 510 receives the actuation signal of the complex fault, the second driving member 510 drives the driving rod 520 to move and extend so that the first abutment portion 523 disengages from the second abutment portion 531. At this time, the clamping member 530 moves toward the handle assembly 300 under the action of the first elastic member 540 and is embedded in the clamping groove 312, thereby realizing the clamping cooperation between the clamping member 530 and the slide plate 310, thereby locking the slide plate 310.

[0088] The driving rod 520 can move in the reverse direction to the initial state under the driving force of the second driving member 510 , or can move in the reverse direction to the initial state when an external force acts on the first restoring portion 521 .

[0089] It can be understood that the above-mentioned second driving mechanism 500 can lock the handle assembly 300 after receiving the actuation signal of a complex fault, so as to ensure that the contact assembly cannot be driven to close through the handle assembly 300 in this state; of course, in other embodiments of the present invention, the above-mentioned effects can also be achieved by other means.

[0090] That is, when the second drive mechanism 500 is in the initial state, the first drive mechanism 400 and the handle assembly 300 are in transmission cooperation; the second drive mechanism 500 can release the transmission cooperation between the handle assembly 300 and the first drive mechanism 400; or after the first drive mechanism 400 drives the lock assembly 200 to disengage, the second drive member 510 can automatically reset to the initial state after receiving an external reset signal.

[0091] Specifically, see Figures 6 to 8 The second driving mechanism 500 further includes a reset member 550 , which is movably disposed on the slide plate 310 of the handle assembly 300 .

[0092] Specifically, the reset member 550 is rod-shaped and slidably penetrates the slide plate 310 . One end of the reset member 550 extends to the first driving mechanism 400 , and the other end abuts against the driving rod 520 of the second driving mechanism 500 .

[0093] like Figure 7As shown, when the second driving mechanism 500 is in the initial state, the reset member 550 is located in the extension direction of the motion path of the transmission member 420 of the first driving mechanism 400, specifically, the reset member 550 is located in the extension direction of the motion path of the first actuating portion 421. Therefore, when the handle assembly 300 is driven to move by an external force, the reset member 550 can be driven to move synchronously by the handle assembly 300, so that the reset member 550 can abut and drive the transmission member 420 to move synchronously, and drive the locking mechanism to buckle again through the transmission member 420, and synchronously drive the first driving member 410 to reset; in short, in this state, the first driving mechanism 400 can be reset under the drive of the handle assembly 300, and drive the locking assembly 200 to buckle again.

[0094] After the second driving member 510 receives the actuation signal of the complex fault, Figure 8 As shown, the second driving member 510 drives the driving rod 520 to move and extend, so as to drive the reset member 550 away from the extension direction of the movement path of the first driving mechanism 400, that is, to drive the reset member 550 away from the extension direction of the movement path of the first actuating portion 421, so as to release the transmission cooperation between the handle assembly 300 and the first driving mechanism 400. In this case, even if the handle assembly 300 is rotated, the first driving mechanism 400 cannot be reset, and the locking mechanism cannot be locked again.

[0095] In this embodiment, the driving rod 520 is provided with a second reset portion 522 , which extends out of the housing and is used to drive the driving rod 520 to move in the opposite direction to retract under the action of an external force, so as to reset to an initial state.

[0096] That is, after the second driving mechanism 500 is started, the driving rod 520 can be reset by manually pulling the second reset portion 522 to retract it to the first driving member 410 .

[0097] Of course, in other embodiments of the present invention, resetting can also be performed by automatic resetting, thereby realizing remote operation.

[0098] Specifically, after the second driving member 510 receives the actuation signal of a complex fault, the second driving member 510 can drive the driving rod 520 to move, so as to drive the reset member 550 away from the extension direction of the movement path of the first driving mechanism 400, that is, to drive the reset member 550 away from the extension direction of the movement path of the first actuating portion 421, so as to release the transmission cooperation between the handle assembly 300 and the first driving mechanism 400; and after the fault is eliminated, the second driving member 510 can directly drive the driving rod 520 to move in the opposite direction to reset to the initial state after receiving an external reset signal.

[0099] Furthermore, the second driving mechanism 500 further includes a second elastic member 560 , the driving rod 520 is provided with a third abutting portion 524 , and the restoring member 550 is provided with a fourth abutting portion 551 .

[0100] In the initial state of the second driving mechanism 500, that is, when the driving rod 520 is retracted relative to the second driving member 510, the third abutting portion 524 abuts against the fourth abutting portion 551, and the second elastic member 560 is arranged in a compressed state between the fourth abutting portion 551 and the slide plate 310 of the handle assembly 300. At this time, the reset member 550 is located in the extension direction of the movement path of the transmission member 420 of the first driving mechanism 400, that is, the reset member 550 is located in the extension direction of the movement path of the first actuating portion 421.

[0101] After the second driving member 510 receives the actuation signal of the complex fault, the second driving member 510 is used to drive the driving rod 520 to move so that the third abutment portion 524 disengages from the fourth abutment portion 551, so that the reset member 550 is away from the extension direction of the movement path of the transmission member 420 of the first driving mechanism 400 under the action of the second elastic member 560, that is, the reset member 550 is away from the extension direction of the movement path of the first actuating portion 421 under the action of the second elastic member 560; or the driving rod 520 can be driven to move in the opposite direction to the initial state when an external driving force acts on the second reset portion 522.

[0102] In summary, an embodiment of the present invention provides an isolating switch 10, which provides double protection for the isolating switch 10 through a first driving mechanism 400 and a second driving mechanism 500, and can adapt to different circuit fault scenarios, thereby effectively improving the adaptability of the isolating switch 10, thereby ensuring the stability and reliability of the power supply system; in addition, the resetting process of the driving mechanism is efficient and convenient, thereby improving the operating efficiency of the isolating switch 10.

[0103] Furthermore, an embodiment of the present invention also provides a power conversion device, including a chassis, a control unit, and an isolating switch 10 as in the above embodiment.

[0104] In this embodiment, the handle is exposed outside the chassis for user operation, and the reset button is inside the chassis; the control unit is electrically connected to the first drive mechanism 400 and the second drive mechanism 500, and is used to send a trip signal to at least one of the first drive mechanism 400 and the second drive mechanism 500 when a line fault occurs.

[0105] Furthermore, an embodiment of the present invention also provides a power supply system, including a power conversion device, a control unit, and an isolating switch 10 as in the above embodiment.

[0106] In this embodiment, the control unit is independent of the power conversion device, the isolating switch is installed in the power conversion device, and the handle is exposed outside the power conversion device; the control unit is electrically connected with the first drive mechanism 400 and the second drive mechanism 500 through the power conversion device, and is used to send a tripping signal to at least one of the first drive mechanism 400 and the second drive mechanism 500 when a line fault occurs.

[0107] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An isolating switch, comprising a handle, an operating mechanism and a plurality of switch units, wherein the handle can drive the operating mechanism to move so as to close or open the plurality of switch units, characterized in that: The operating mechanism comprises: Installing the housing (100); A lock assembly (200), the lock assembly (200) being arranged on the mounting housing (100), the lock assembly (200) being used for transmission connection with the contact assembly to drive the contact assembly to close or open the switch; A handle assembly (300), wherein the handle assembly (300) is movably disposed on the mounting housing (100), and the handle assembly (300) can drive the lock assembly (200) to move so as to achieve closing or opening of the contact assembly; a first driving mechanism (400), the first driving mechanism (400) being fixedly arranged on the mounting housing (100), the first driving mechanism (400) being in transmission cooperation with the handle assembly (300), and being used for resetting under the drive of the handle assembly (300) and driving the lock assembly (200) to buckle again, or for driving the lock assembly (200) to be released, so as to open the contact assembly; A second driving mechanism (500), wherein the second driving mechanism (500) is fixedly disposed on the mounting shell (100), the second driving mechanism (500) cannot cause the locking assembly (200) to be disengaged, the second driving mechanism (500) is used to lock the handle assembly (300), or the second driving mechanism (500) is used to release the transmission cooperation between the handle assembly (300) and the first driving mechanism (400).

2. The isolating switch according to claim 1, characterized in that: The handle assembly (300) comprises a handle rod (320) and a slide plate (310), wherein the handle rod (320) is transmission-connected to the slide plate (310), and the slide plate (310) is provided with an extension portion (311); The first driving mechanism (400) comprises a first driving member (410) and a transmission member (420); the first driving member (410) is fixedly disposed on the mounting housing (100) and is used to drive the transmission member (420) to move, so as to drive the locking assembly (200) to be released; The extension portion (311) is located in the extension direction of the movement path of the transmission member (420). When the first driving mechanism (400) receives a signal to drive the locking assembly (200) to be disengaged, the extension portion (311) is used to drive the transmission member (420) to move in the opposite direction under the drive of the slide plate (310), so that the transmission member (420) drives the locking assembly (200) to be locked again, and the first driving member (410) is reset.

3. The isolating switch according to claim 1, characterized in that: The first driving mechanism (400) comprises a first driving member (410) and a transmission member (420); the first driving member (410) is fixedly disposed on the mounting housing (100); The first driving member (410) is used to drive the transmission member (420) to move, so as to drive the locking assembly (200) to be released; and after being released, the transmission member (420) can automatically reset to an initial state.

4. The isolating switch according to claim 1, characterized in that: The second driving mechanism (500) comprises a second driving member (510), a driving rod (520) and a clamping member (530); The clamping member (530) is movably arranged on the mounting housing (100), the driving rod (520) is in transmission cooperation with the clamping member (530), and the second driving member (510) is used to drive the driving rod (520) to move, so that the clamping member (530) is clamped and cooperated with the handle assembly (300); The driving rod (520) is provided with a first reset portion (521), which extends out of the mounting shell (100) and is used to drive the driving rod (520) to move in the opposite direction under the action of an external force to reset to an initial state, so as to disengage the clamping member (530) from the handle assembly (300).

5. The isolating switch according to claim 1, characterized in that: The second driving mechanism (500) comprises a second driving member (510), a driving rod (520) and a clamping member (530); The clamping member (530) is movably arranged on the mounting shell (100), the driving rod (520) is in transmission cooperation with the clamping member (530), and the second driving member (510) is used to drive the driving rod (520) to move so that the clamping member (530) and the handle assembly (300) are clamped and cooperated; or in the case where the first driving mechanism (400) drives the locking assembly (200) to disengage, the second driving member (510) is also used to receive an external reset signal to drive the driving rod (520) to move in the opposite direction to reset to an initial state, so that the clamping member (530) is disengaged from the handle assembly (300).

6. The isolating switch according to claim 4 or 5, characterized in that: The second driving mechanism (500) further comprises a first elastic member (540), the driving rod (520) is provided with a first abutting portion (523), the holding member (530) is provided with a second abutting portion (531), and the sliding plate (310) of the handle assembly (300) is provided with a clamping groove (312); When the second driving member (510) is in an initial state, the first abutting portion (523) abuts against the second abutting portion (531), and the first elastic member (540) is arranged between the mounting housing (100) and the clamping member (530) in a compressed state; The second driving member (510) drives the driving rod (520) to move so that the first abutting portion (523) is disengaged from the second abutting portion (531), so that the holding member (530) moves toward the handle assembly (300) and is embedded in the holding slot (312) under the action of the first elastic member (540).

7. The isolating switch according to claim 1, characterized in that: The second driving mechanism (500) comprises a second driving member (510), a driving rod (520) and a reset member (550); the second driving member (510) is fixedly arranged on the mounting housing (100); and the reset member (550) is movably arranged on the slide plate (310) of the handle assembly (300); When the second driving mechanism (500) is in an initial state, the reset member (550) is located in an extension direction of the movement path of the first driving mechanism (400), so that the first driving mechanism (400) can be reset under the drive of the handle assembly (300) and drive the locking assembly (200) to buckle again; The second driving member (510) is used to drive the driving rod (520) to move, so as to drive the reset member (550) away from the extension direction of the movement path of the first driving mechanism (400), so as to release the transmission cooperation between the handle assembly (300) and the first driving mechanism (400); The driving rod (520) is provided with a second reset portion (522), which extends out of the mounting shell (100) and is used to drive the driving rod (520) to move in the opposite direction under the action of an external force so as to reset to an initial state.

8. The isolating switch according to claim 1, characterized in that: When the second driving mechanism (500) is in an initial state, the first driving mechanism (400) is in transmission cooperation with the handle assembly (300); The second driving mechanism (500) is used to release the transmission cooperation between the handle assembly (300) and the first driving mechanism (400); or after the first driving mechanism (400) drives the locking assembly (200) to be disengaged, the second driving mechanism (500) is also used to receive an external reset signal to reset to an initial state.

9. The isolating switch according to claim 8, characterized in that: The second driving mechanism (500) comprises a second driving member (510), a driving rod (520) and a reset member (550); the second driving member (510) is fixedly arranged on the mounting housing (100); and the reset member (550) is movably arranged on the slide plate (310) of the handle assembly (300); When the second driving mechanism (500) is in an initial state, the reset member (550) is located in an extension direction of the movement path of the first driving mechanism (400), so that the first driving mechanism (400) can be reset under the drive of the handle assembly (300) and drive the locking assembly (200) to buckle again; The second driving member (510) is used to drive the driving rod (520) to move, so as to drive the resetting member (550) to move away from the extension direction of the movement path of the first driving mechanism (400), so as to release the transmission cooperation between the handle assembly (300) and the first driving mechanism (400); or when the first driving mechanism (400) drives the locking assembly (200) to disengage, the second driving member (510) is also used to receive an external resetting signal to drive the driving rod (520) to move in the opposite direction to reset to an initial state.

10. The isolating switch according to claim 7 or 9, characterized in that: The second driving mechanism (500) further comprises a second elastic member (560), the driving rod (520) is provided with a third abutting portion (524), and the reset member (550) is provided with a fourth abutting portion (551); In the initial state of the second driving mechanism (500), the third abutting portion (524) abuts against the fourth abutting portion (551), and the second elastic member (560) is arranged in a compressed state between the fourth abutting portion (551) and the slide plate (310) of the handle assembly (300); The second driving member (510) is used to drive the driving rod (520) to move so that the third abutting portion (524) is disengaged from the fourth abutting portion (551), so that the reset member (550) is moved away from the extension direction of the movement path of the first driving mechanism (400) under the action of the second elastic member (560).

11. A power conversion device, characterized in that: It comprises a chassis, a control unit and an isolating switch according to any one of claims 1 to 10; the handle is exposed outside the chassis for user operation, and the reset button is inside the chassis; The control unit is electrically connected to the first drive mechanism (400) and the second drive mechanism (500), and is used to send a trip signal to the first drive mechanism (400) and / or the second drive mechanism (500) when a line fault occurs.

12. A power supply system, characterized in that: The isolating switch comprises a power conversion device, a control unit and any one of claims 1 to 10; the control unit is independent of the power conversion device, the isolating switch is installed in the power conversion device, and the handle is exposed outside the power conversion device; the control unit is electrically connected to the first drive mechanism (400) and the second drive mechanism (500) through the power conversion device, and is used to send a trip signal to the first drive mechanism (400) and / or the second drive mechanism (500) when a line fault occurs.

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