Magnetic flux release, isolating switch and power supply system

Abstract

The invention relates to the technical field of low-voltage electric appliances, in particular to a magnetic flux release, an isolating switch and a power supply system. The electromagnetic coil is installed on the support, and the ejector rod is inserted into the electromagnetic coil in a sliding mode. In the electromagnetic coil, at least two movable iron cores which are arranged at intervals in the axial direction are arranged on the ejector rod; when the electromagnetic coil is powered on, at least one movable iron core moves in the axial direction of the ejector rod and drives the ejector rod to move. According to the embodiment of the invention, at least two movable iron cores are arranged in the magnetic flux release, so that differentiated response can be realized for different faults.

Description

[0001] Cross - reference to related applications

[0002] This application claims the priority of a Chinese patent application with the application number 2025103283547, titled "Magnetic Flux Trip, Disconnector, and Power Supply System", filed with the Chinese Patent Office on March 18, 2025. The entire content thereof is incorporated herein by reference. Technical field

[0003] This application relates to the technical field of low - voltage electrical appliances. Specifically, it relates to a magnetic flux trip, a disconnector, and a power supply system. Background technique

[0004] With the progress of technology, traditional disconnectors in inverters have gradually been replaced by disconnector locks with remote tripping functions. When the system detects faults such as overload and short - circuit, the disconnector with a remote tripping unit can quickly control the moving contact to separate and cut off the current through the magnetic flux trip, protecting the safety of electrical equipment and circuits. After the circuit maintenance is completed, the disconnector is manually reset and closed by the handle exposed outside the housing, so that the inverter can work again.

[0005] In specific use, there are different types of problems in the circuit system, such as simple faults and complex faults. Currently, only one moving iron core is set in the magnetic flux trip. No matter what kind of fault occurs, the electromagnetic coil can only drive a single moving iron core to act. Therefore, it is impossible to distinguish and respond to the electrical signals generated by different faults. For example, when there is an overload or short - circuit, the magnetic flux trip responds in the same way, resulting in unnecessary power outage or delayed power outage, which in turn affects the stability and reliability of the system. Due to the lack of a targeted fault - handling mechanism, there will be frequent false triggers or failures to cut off the current in a timely manner. This not only increases the maintenance frequency of the system, but also may increase the risk of equipment damage, thus increasing the overall operating cost. Summary of the invention

[0006] The purpose of this application is to provide a magnetic flux trip, a disconnector, and a power supply system. By setting at least two moving iron cores in the magnetic flux trip, it is beneficial to achieve differential responses for different faults.

[0007] The embodiments of this application are implemented as follows:

[0008] In a first aspect, an embodiment of the present application provides a magnetic flux tripping device, including a bracket, an electromagnetic coil, and a push rod; the electromagnetic coil is installed on the bracket, and the push rod is slidably inserted into the electromagnetic coil; inside the electromagnetic coil, at least two moving iron cores are arranged at intervals along the axial direction on the push rod; one end of the electromagnetic coil is provided with a magnetic member, and the other end is provided with a driving member; the moving iron core close to the magnetic member is attracted by the magnetic force of the magnetic member; when the electromagnetic coil is energized, at least one of the moving iron cores moves away from the magnetic member along the axial direction of the push rod, and the push rod drives the driving member to move.

[0009] As an optional implementation manner, there are two moving iron cores; the two moving iron cores are slidably arranged inside the electromagnetic coil; a convex structure is provided on the push rod; when a first electrical signal is applied to the electromagnetic coil, the first moving iron core is driven to abut against the convex structure and push the push rod to move axially; or, when a second electrical signal is applied to the electromagnetic coil, the second moving iron core is driven to abut against the first moving iron core and push the push rod to move axially through the convex structure; wherein, the signal intensity of the second electrical signal is greater than that of the first electrical signal;

[0010] The electromagnetic coil has a first connection terminal and a second connection terminal; when the first connection terminal is used as the input terminal and the second connection terminal is used as the output terminal, the first electrical signal is generated; when the second connection terminal is used as the input terminal and the first connection terminal is used as the output terminal, the second electrical signal is generated.

[0011] As an optional implementation manner, a compression spring element is further included, one end of the compression spring element abuts against the magnetic member, and the other end abuts against the second moving iron core; the magnetic member attracts the second moving iron core, and the compression spring element compresses and stores elastic potential energy.

[0012] As an optional implementation manner, a receiving cavity is formed inside the second moving iron core, and the compression spring element is located inside the receiving cavity.

[0013] As an optional implementation manner, a return spring is further included; one end of the return spring abuts against the end of the bracket away from the magnetic member, and the other end abuts against the convex structure; the return spring generates a force to push the push rod close to the magnetic member.

[0014] As an optional implementation manner, an intermediate spring is further included; one end of the intermediate spring abuts against the first moving iron core, and the other end abuts against the second moving iron core; the intermediate spring generates a force to make the first moving iron core and the second moving iron core move away from each other.

[0015] As an alternative embodiment, the central axis of the ejector rod coincides with the central axis of the electromagnetic coil; a first through hole is provided on the first moving iron core, and a second through hole is provided on the second moving iron core. One end of the ejector rod sequentially penetrates through the first through hole and the second through hole.

[0016] In a second aspect, an embodiment of the present application provides a disconnector, including the above-mentioned magnetic flux release and an operating mechanism;

[0017] The operating mechanism includes a tripping rod; the driving member of the magnetic flux release abuts against the tripping rod, so that the driving member can drive the operating mechanism to move synchronously, for controlling the separation of the moving and static contacts of the disconnector;

[0018] When a first electrical signal is applied, the driving member drives the moving and static contacts to separate through the operating mechanism. After the first electrical signal is disconnected, the return spring releases elastic potential energy to make the ejector rod move axially close to the magnetic member, so as to reset the driving member;

[0019] Or, when a second electrical signal is applied, the driving member drives the moving and static contacts to separate through the operating mechanism. After the second electrical signal is disconnected, the ejector rod remains in place to keep the moving and static contacts in a separated state.

[0020] As an alternative embodiment, it further includes a housing, and a reset hole is provided on the side wall of the housing; one end of the ejector rod away from the magnetic member extends towards the reset hole.

[0021] In a third aspect, an embodiment of the present application provides a power supply system, including a power conversion unit and the above-mentioned disconnector. The power conversion unit has a DC output terminal electrically connected to the disconnector;

[0022] The power conversion unit includes a fault detection module for detecting faults and sending fault signals;

[0023] The power conversion unit further includes a signal conversion module for receiving the fault signal and sending a first electrical signal or a second electrical signal to the magnetic flux release through the DC output terminal.

[0024] The beneficial effects of the embodiments of the present application include:

[0025] The magnetic flux release provided by the present application can achieve the ability to distinguish faults. By adopting the design of at least two moving iron cores, the specific moving iron core driven can be adjusted according to different current signals, such as overload, short circuit, etc., so as to achieve more accurate identification and response to different types of faults. The improvement of the embodiments of the present application enables the magnetic flux release to take the most appropriate countermeasures for specific types of faults, improving the reliability and stability of the system.

[0026] The disconnecting switch provided by the embodiment of the present application can select the automatic reset or manual reset mode according to different electric signal intensities, providing higher flexibility and adaptability. Minor faults can be quickly restored automatically, while serious faults require manual intervention to ensure the safety and reliability of the system. The disconnecting switch of the embodiment of the present application has remote control capabilities. Through the flux release, the switch can be tripped without direct contact with the disconnecting switch. The embodiment of the present application allows operators to operate at a safe position away from high-voltage equipment, avoiding the risks brought by direct contact with high-voltage equipment. In addition, the precise fault detection and response mechanism can ensure that the power supply is quickly cut off in case of an emergency, protecting the safety of equipment and personnel.

[0027] The power supply system of the embodiment of the present application can perform precise fault identification and response mechanisms, reducing the risk of misoperation and enhancing the stability and safety of the system. The power supply system of the embodiment of the present application has a real-time monitoring and quick tripping mechanism, which can effectively prevent the spread of faults and protect the safety of equipment and personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 One of the structural diagrams of the flux release of the embodiment of the present application;

[0030] Figure 2 Another structural diagram of the flux release of the embodiment of the present application;

[0031] Figure 3 Another structural diagram of the flux release of the embodiment of the present application;

[0032] Figure 4 Another structural diagram of the flux release of the embodiment of the present application;

[0033] Figure 5 One of the structural diagrams of the disconnecting switch of the embodiment of the present application;

[0034] Figure 6 Another structural diagram of the disconnecting switch of the embodiment of the present application;

[0035] Figure 7 Another structural diagram of the disconnecting switch of the embodiment of the present application.

[0036] ICON:

[0037] 100 - Magnetic flux release; 101 - Bracket; 102 - Electromagnetic coil; 103 - Push rod; 104 - Protrusion structure; 105 - First moving iron core; 106 - Second moving iron core; 107 - Magnetic part; 108 - Compression spring element; 109 - Accommodation cavity; 110 - Return spring; 111 - Intermediate spring; 112 - First through hole; 113 - Second through hole; 114 - Driving part; 115 - Operating mechanism; 1150 - Tripping rod; 116 - Housing; 117 - Return hole; 10 - Handle; 22 - Actuating mechanism; 24 - Slide plate; 241 - Pushing part; 243 - Second transmission part; 26 - Transmission plate; 261 - First transmission part; 30 - Switch unit. Detailed implementation manners

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. The components of the embodiments of the present application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present application, it should also be noted that, unless otherwise clearly defined and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0042] In specific applications, the circuit system has different types of problems such as simple faults and complex faults. Currently, only one moving iron core is provided in the magnetic flux release 100. Regardless of the type of fault, the electromagnetic coil 102 can only drive a single moving iron core to act. Therefore, it is impossible to distinguish and respond to the electrical signals generated by different faults. For example, when overloaded or short-circuited, the magnetic flux release 100 responds in the same way, resulting in unnecessary power outages or delayed power outages, which in turn affects the stability and reliability of the system. Due to the lack of a targeted fault handling mechanism, there will be frequent false triggers or failures to cut off the current in a timely manner. This not only increases the maintenance frequency of the system but also may increase the risk of equipment damage, thereby increasing the overall operating cost.

[0043] To solve the above technical problems, the embodiments of the present application provide a magnetic flux release 100, a disconnecting switch, and a power supply system.

[0044] Referring to Figure 1 、 Figure 2 As shown, the magnetic flux release 100 provided by the embodiments of the present application includes a bracket 101, an electromagnetic coil 102, and a push rod 103; the electromagnetic coil 102 is installed on the bracket 101, and the push rod 103 is slidably inserted into the electromagnetic coil 102; inside the electromagnetic coil 102, at least two moving iron cores are arranged at intervals along the axial direction on the push rod 103; one end of the electromagnetic coil is provided with a magnetic member 107, and the other end is provided with a driving member 114; the moving iron core close to the magnetic member is attracted by the magnetic force of the magnetic member 107; when the electromagnetic coil 102 is energized, at least one moving iron core moves away from the magnetic member 107 along the axial direction of the push rod 103, and the push rod 103 drives the driving member 114 to move.

[0045] It should be noted that the number of moving iron cores can be two or three, and those skilled in the art can set it according to needs.

[0046] It should be noted that the embodiments of the present application adopt a design with multiple moving iron cores. Different from the traditional design that only includes one moving iron core, at least two moving iron cores are arranged at intervals along the axial direction on the push rod 103 in the magnetic flux release 100 of this embodiment. Through the above design, it is allowed to selectively drive one or more moving iron cores to act according to different electrical signal intensities and characteristics.

[0047] It should be noted that the push rod 103 of the embodiments of the present application is slidably inserted into the electromagnetic coil 102, and the push rod 103 can freely slide inside the electromagnetic coil 102. When the electromagnetic coil 102 is energized, the electromagnetic coil 102 can drive the moving iron core and the push rod 103 to move along the axial direction.

[0048] It should be noted that in the embodiment of the present application, the moving iron core close to the magnetic member 107 can be restricted by the magnetic member 107. The magnetic force generated by the magnetic member 107 pulls the moving iron core, enabling the moving iron core to have the movement trend of the magnetic member 107 and realizing the position holding of the moving iron core. When the electromagnetic coil 102 is powered on after a simple fault occurs, the magnetic member 107 can prevent the moving iron core from moving.

[0049] The technical effects that can be produced by the embodiment of the present application:

[0050] The embodiment of the present application can achieve the ability to distinguish faults. By adopting the design of at least two moving iron cores, according to different current signals, such as overload, short circuit, etc., the specific moving iron core to be driven can be adjusted, so as to achieve more accurate identification and response to different types of faults. The improvement of the embodiment of the present application enables the flux trip 100 to take the most appropriate countermeasures for specific types of faults, improving the reliability and stability of the system.

[0051] The embodiment of the present application can reduce the risk of mis-triggering. Since the embodiment of the present application can more accurately distinguish different types of faults and perform corresponding processing, it reduces the occurrence of unnecessary power outages and effectively reduces the risk of unnecessary system shutdown caused by misjudgment.

[0052] The embodiment of the present application can improve the maintenance efficiency of the system. The precise fault response mechanism reduces the possibility of equipment damage, thereby reducing the maintenance frequency and cost, and helping to reduce the overall operation cost.

[0053] Referring to Figure 2 、 Figure 3 As shown, as an optional implementation manner, there are two moving iron cores; the two moving iron cores are slidably arranged in the electromagnetic coil 102; a convex structure 104 is provided on the ejector rod 103; when the electromagnetic coil 102 is energized with a first electrical signal, the first moving iron core 105 is driven to abut against the convex structure 104 and push the ejector rod 103 to move axially; or, when the electromagnetic coil 102 is energized with a second electrical signal, the second moving iron core 106 is driven to abut against the first moving iron core 105 and push the ejector rod 103 to move axially through the convex structure 104; wherein, the signal intensity of the second electrical signal is greater than that of the first electrical signal;

[0054] The electromagnetic coil 102 has a first terminal and a second terminal; when the circuit is connected correctly, that is, when the first terminal is used as the input terminal and the second terminal is used as the output terminal, a first electrical signal is generated; when the circuit is connected reversely, that is, when the second terminal is used as the input terminal and the first terminal is used as the output terminal, a second electrical signal is generated.

[0055] It should be noted that after the first electrical signal is applied and the driving member 114 drives the moving and static contacts to separate through the operating mechanism 115, that is, after the first electrical signal is disconnected, the first return spring 110 releases its elastic potential energy, causing the ejector rod 103 to move axially closer to the magnetic member 107 and driving the driving member 114 to reset, enabling the flux tripping device to achieve automatic reset.

[0056] Specifically, the first moving iron core 105 drives the ejector rod 103 to move axially away from the magnetic member 107, the second moving iron core 106 remains stationary, the driving member 114 drives the operating mechanism 115 to trip, and the disconnecting switch opens. After the first electrical signal is disconnected, the return spring 110 drives the ejector rod 103, the driving member 114, and the first moving iron core 105 back to their initial positions, and the tripping rod 1150 returns to its initial position under the action of elastic force to complete reclosing. At this time, the disconnecting switch can be closed by driving the operating mechanism 115 through the handle assembly.

[0057] When the second electrical signal is applied, the driving member 114 drives the moving and static contacts to separate through the operating mechanism 115. Among them, the elastic thrust generated by the return spring 110 is less than the electromagnetic force applied by the electromagnetic coil 102 to the moving iron core, so as to maintain the separated state of the moving and static contacts.

[0058] After the second electrical signal is disconnected, automatic reset cannot be achieved, and manual operation by the staff is required for reset.

[0059] Specifically, the suction force of the return spring 110 and the magnetic member 107 cannot overcome the reaction force of the compression spring element 108 to drive the ejector rod 103, the driving member 114, the first moving iron core 105, and the second moving iron core 106 back to their initial positions. The tripping rod 1150 cannot return to its initial position, and the disconnecting switch cannot complete reclosing. At this time, the disconnecting switch cannot be closed by driving the operating mechanism 115 through the handle assembly, and external force needs to be used to push the driving member 114 through the ejector rod 103 to make the operating mechanism 115 reclose.

[0060] It should be noted that the embodiment of the present application adopts a double moving iron core design. There are two moving iron cores in the flux tripping device 100, and these two moving iron cores can slide axially within the electromagnetic coil 102. Through the above design, it is allowed to selectively activate different moving iron cores to act according to different input electrical signals.

[0061] In the embodiment of the present application, the convex structure 104 on the ejector rod 103 is provided with a specific convex structure 104 on the ejector rod 103, and this structure is used to cooperate with the moving iron core to achieve precise action transmission.

[0062] The selective action of the embodiment of the present application based on the electrical signal strength:

[0063] When a first electrical signal with a relatively small signal intensity is applied to the electromagnetic coil 102, the first moving iron core 105 is activated and contacts the convex structure 104 on the ejector rod 103, thereby pushing the ejector rod 103 to move axially.

[0064] When a second electrical signal with a relatively large signal intensity is applied to the electromagnetic coil 102, the second moving iron core 106 is activated, first contacts the first moving iron core 105, and then indirectly acts on the convex structure 104 through the first moving iron core 105, thereby pushing the ejector rod 103 to move axially.

[0065] It should be noted that when a first electrical signal with a relatively small signal intensity is applied to the electromagnetic coil 102, the magnetic field generated by the electromagnetic coil 102 cannot completely cancel out the magnetic field of the magnetic member 107. That is to say, the magnetic member 107 still maintains a magnetic traction on the second moving iron core 106, so that the second moving iron core 106 remains in place without moving. When a second electrical signal with a relatively large signal intensity is applied to the electromagnetic coil 102, the magnetic field generated by the electromagnetic coil 102 completely cancels out the magnetic field of the magnetic member 107, so that the magnetic force of the magnetic member 107 is balanced. Combining with the thrust generated by the compression spring element 108 releasing elastic potential energy, the second moving iron core 106 acts and pushes the first moving iron core 105.

[0066] In the embodiment of the present application, by distinguishing electrical signals of different intensities, different types of faults in the circuit can be more accurately distinguished. For example, the weaker first electrical signal may correspond to a small range of current fluctuations or a light overload situation, while the stronger second electrical signal may indicate a serious short circuit or other emergency situations. The embodiment of the present application enables the system to take the most appropriate response measures for specific fault types, improving the accuracy and timeliness of the response.

[0067] It should be noted that since different fault states can be more finely distinguished and processed, unnecessary power outages or delayed power outages caused by a single response mode are avoided. This is crucial for protecting electrical equipment from damage and maintaining the stable operation of the power system.

[0068] In addition, the embodiment of the present application can reduce false triggers and maintenance costs. The more accurate fault detection and response mechanism reduces the unnecessary system downtime, reduces the maintenance frequency and costs, and at the same time reduces the risk of production interruption caused by incorrect power cut-off.

[0069] Refer to Figure 2 As shown, as an optional implementation manner, it further includes a compression spring element 108. One end of the compression spring element 108 abuts against the magnetic member 107, and the other end abuts against the second moving iron core 106; the magnetic member 107 attracts the second moving iron core 106, and the compression spring element 108 compresses to store elastic potential energy.

[0070] It should be noted that the magnetic member 107 in the embodiment of the present application is located at one end of the electromagnetic coil 102, and its function is to attract the second moving iron core 106 by magnetic force, so that the second moving iron core 106 can be activated under specific conditions. One end of the compression spring element 108 in the embodiment of the present application abuts against the magnetic member 107, and the other end abuts against the second moving iron core 106. When the magnetic member 107 attracts the second moving iron core 106, the compression spring element 108 is compressed and stores elastic potential energy.

[0071] It should be noted that through the design of the compression spring element 108 in the embodiment of the present application, after power-off or the disappearance of the electrical signal, the second moving iron core 106 can be quickly restored to its original position to achieve rapid reset. It should be noted that in combination with the above-mentioned double moving iron core design in the embodiment of the present application, the addition of the magnetic member 107 and the compression spring element 108 makes the movement of the second moving iron core 106 not only depend on the electrical signal, but also be affected by mechanical energy storage, that is, the elastic potential energy of the compression spring element 108.

[0072] Specifically, the compression spring element 108 stores elastic potential energy to push the second moving iron core 106, the first moving iron core 105, the ejector rod 103 and the driving member 114 to trip the operating mechanism, so that the movement of the second moving iron core 106 cannot be automatically reset, and it needs to be reset by manually pushing the ejector rod 103.

[0073] It should be noted that the magnetic member 107 can be a permanent magnet or other magnetic modules.

[0074] The embodiment of the present application can improve the action response speed and stability. Specifically, when the magnetic member 107 attracts the second moving iron core 106, the compression spring element 108 in the embodiment of the present application is compressed and stores energy. When it is necessary to release the second moving iron core 106, the compression spring element 108 quickly returns to its original state and pushes the second moving iron core 106 back to the initial position. This method can significantly improve the response speed of the moving iron core and ensure the stability and repeatability of its movement.

[0075] By introducing the compression spring element 108 in the embodiment of the present application, even in the case of power interruption, it can ensure that the second moving iron core 106 can be quickly reset, avoiding the risk of system failure caused by the loss of electrical signal.

[0076] Refer to Figure 2 As shown, as an optional implementation manner, a receiving cavity 109 is formed in the second moving iron core 106, and the compression spring element 108 is located in the receiving cavity 109.

[0077] It should be noted that a receiving cavity 109 is formed inside the second moving iron core 106 for accommodating the compression spring element 108. The design of the receiving cavity 109 enables the compression spring element 108 to be more tightly integrated inside the second moving iron core 106, making the entire device more compact, reducing the occupied space, and at the same time reducing the complexity of the external structure. The compact design of the embodiments of the present application helps to improve the integration and stability of the system.

[0078] Referring Figure 2 As shown, as an optional implementation manner, it further includes a return spring 110; one end of the return spring 110 abuts against the end of the bracket 101 away from the magnetic member 107, and the other end abuts against the convex structure 104; the return spring 110 generates a force to push the ejector rod 103 close to the magnetic member 107.

[0079] It should be noted that one end of the return spring 110 abuts against the end of the bracket 101 away from the magnetic member 107, and the other end abuts against the convex structure 104 on the ejector rod 103. The return spring 110 in the embodiments of the present application can generate a force to push the ejector rod 103 in the direction of the magnetic member 107. When the electromagnetic coil 102 is not powered on, the return spring 110 uses its elastic potential energy to push the ejector rod 103 in the direction of the magnetic member 107, so that the system returns to the initial state. When the electromagnetic coil 102 is powered on, the movement of the moving iron core will overcome the force of the return spring 110 and push the ejector rod 103 to move axially to complete a specific functional action.

[0080] The embodiments of the present application can improve the reset ability of the system. The presence of the return spring 110 ensures that after the electromagnetic coil 102 is powered off, the ejector rod 103 can quickly return to the initial position, thereby realizing the rapid reset of the system. In application scenarios that require frequent state switching, the embodiments of the present application can significantly improve the response speed and stability of the system.

[0081] In addition, the return spring 110 in the embodiments of the present application provides a continuous driving force, which helps to reduce the vibration and impact of the moving iron core and the ejector rod 103 during the movement process, and improves the working stability and service life of the entire device.

[0082] Referring Figure 2 and Figure 4 As shown, as an optional implementation manner, it further includes an intermediate spring 111; one end of the intermediate spring 111 abuts against the first moving iron core 105, and the other end abuts against the second moving iron core 106; the intermediate spring 111 generates a force to push the first moving iron core 105 and the second moving iron core 106 away from each other.

[0083] Among them, the central axis of the ejector rod 103 coincides with the central axis of the electromagnetic coil 102; a first through hole 112 is provided on the first moving iron core 105, a second through hole 113 is provided on the second moving iron core 106, and one end of the ejector rod 103 sequentially penetrates through the first through hole 112 and the second through hole 113.

[0084] It should be noted that in the embodiment of the present application, one end of the intermediate spring 111 abuts against the first moving iron core 105, and the other end abuts against the second moving iron core 106. So that the intermediate spring 111 can generate a repulsive force between the two moving iron cores. When the electromagnetic coil 102 is not energized, the intermediate spring 111 uses its elastic potential energy to push the first moving iron core 105 and the second moving iron core 106 away from each other to maintain their initial distance. When the electromagnetic coil 102 is energized, according to different input signal strengths, the moving iron core will be activated and overcome the acting force of the intermediate spring 111 to push the ejector rod 103 to move.

[0085] Refer to Figure 1 、 Figure 6 As shown, the disconnecting switch provided by the embodiment of the present application includes the above-mentioned flux release 100 and the operating mechanism 115;

[0086] The operating mechanism 115 includes a release rod 1150; the driving member 114 of the flux release 100 abuts against the release rod 1150 so that the driving member 114 can drive the operating mechanism 115 to move synchronously for controlling the separation of the fixed and moving contacts of the disconnecting switch;

[0087] When a first electrical signal is applied, the driving member 114 drives the fixed and moving contacts to separate through the operating mechanism 115. After the first electrical signal is disconnected, the return spring 110 releases its elastic potential energy to move the ejector rod 103 axially closer to the magnetic member 107 and drive the driving member 114 to reset, so that the operating mechanism can drive the fixed and moving contacts to contact;

[0088] Or, when a second electrical signal is applied, the driving member 114 drives the fixed and moving contacts to separate through the operating mechanism 115, wherein the elastic thrust generated by the return spring 110 is less than the electromagnetic force acting on the moving iron core by the electromagnetic coil 102, so as to maintain the separated state of the fixed and moving contacts.

[0089] After the second electrical signal is disconnected, the suction force of the return spring 110 and the magnetic member 107 cannot overcome the reaction force of the compression spring element 108 to drive the ejector rod 103, the driving member 114, the first moving iron core 105, and the second moving iron core 106 to return to the initial position, the release rod 1150 cannot return to the initial position, and the ejector rod 103 remains in place.

[0090] It should be noted that a driving member 114 is provided at the end of the ejector rod 103 of the magnetic flux release 100. The driving member 114 is directly linked with the operating mechanism 115 of the disconnector, so that when the magnetic flux release 100 operates, the operating mechanism 115 of the disconnector can be driven by the driving member 114 to perform corresponding actions.

[0091] Furthermore, as shown in Figure 5 、 Figure 7 The operating mechanism 115 provided in the embodiment of the present application includes an actuating mechanism 22; the handle 10 is drivingly connected to the moving contact of the switch unit 30 of the disconnector through the actuating mechanism 22, and the handle 10 can drive the switch unit 30 to perform manual opening and closing through the actuating mechanism 22 when driven.

[0092] As shown in Figure 6 The driving member 114 abuts against the tripping rod 1150 of the actuating mechanism. When the magnetic flux release 100 receives a tripping signal sent by the power supply system, the driving member 114 can slide out relatively with respect to the bracket 101. At this time, the driving member 114 can drive the tripping rod 1150 to move, so that the actuating mechanism is unlocked, and further the disconnector is opened.

[0093] In some embodiments, the above-mentioned actuating mechanism may include a releasing member, a locking plate and a tripping member. Alternatively, in some other embodiments, the above-mentioned operating mechanism 115 may include a lever, a spring and a pawl. The actuating mechanism shown in the drawings of the present application only serves as an example and does not limit the actual structure of the actuating mechanism. Regarding the specific principle and working process of the actuating mechanism moving along a preset direction relative to the housing to unlock and drive the switch unit 30 to change from closing to opening, those skilled in the art should be able to understand by referring to the tripping process of the disconnector in the prior art, and details are not described here.

[0094] Exemplarily, as shown in Figure 7 the operating mechanism 115 further includes a transmission plate 26 axially connected to the handle 10. A first transmission portion 261 is provided on the transmission plate 26. The reset member includes a slide plate 24. A second transmission portion 243 and a pushing portion 241 are provided on the slide plate 24. The first transmission portion 261 and the second transmission portion 243 cooperate with each other to drivingly connect the handle 10 with the reset member. The pushing portion 241 abuts against the striking portion on the driving member 114, and the pushing portion 241 is used to drive the driving member 114 to reset.

[0095] It should be noted that when the magnetic flux release 100 receives an electrical signal and activates the corresponding moving iron core, the ejector rod 103 will move axially, and the operating mechanism 115 of the disconnector is pushed through the driving member 114 to open the disconnector.

[0096] The disconnect switch provided by the embodiment of the present application has remote control capabilities and can perform opening control on it without directly contacting the disconnect switch. The embodiment of the present application allows operators to operate at a safe location away from high-voltage equipment, avoiding the risks brought by directly contacting high-voltage equipment. In addition, the precise fault detection and response mechanism can ensure that the power supply is quickly cut off in case of an emergency, protecting the safety of equipment and personnel.

[0097] It should be noted that when the flux release 100 is supplied with a first electrical signal and drives the operating mechanism 115 of the disconnect switch through the driving member 114 to drive the moving and static contacts to separate, since the first electrical signal indicates a simple fault, such as overload. In the embodiment of the present application, there is no need for staff to perform maintenance and repair. After the voltage stabilizes and the overload fault is eliminated, the first electrical signal is eliminated. At this time, after the electromagnetic coil 102 no longer generates electromagnetic force. The elastic force generated by the set return spring 110 resets the ejector rod 103.

[0098] Among them, the electromagnetic coil 102 activates the first moving iron core 105, and pushes the ejector rod 103 to drive the moving contact of the disconnect switch to separate through the driving member 114. After power-off, the set return spring 110 utilizes the elastic potential energy stored in it to automatically push the ejector rod 103 back to the initial position to complete the reset process, without the need for staff to perform manual reset.

[0099] When the flux release 100 is supplied with a second electrical signal and drives the moving contact to separate through the driving member 114, since the second electrical signal indicates a complex fault, after the disconnect switch is opened, it is necessary for the staff to troubleshoot and repair the fault, and finally the staff manually pushes the ejector rod 103 to reset.

[0100] When the flux release 100 is supplied with a second electrical signal, the electromagnetic coil 102 activates the second moving iron core 106, and the second moving iron core 106 indirectly pushes the ejector rod 103 through the first moving iron core 105 and drives the moving contact of the disconnect switch to separate through the driving member 114. In this case, the elastic force of the return spring 110 cannot reset the second moving iron core 106, and the reset process requires manual operation by the staff to push the ejector rod 103 back to the initial position. The embodiment of the present application provides a safety measure to ensure that after a serious fault occurs, the staff can check the equipment status and confirm that it is correct before performing the reset operation. This avoids potential risks caused by automatic reset, especially in cases where further maintenance or inspection is required.

[0101] After the fault is eliminated, the staff can manually operate to achieve reset.

[0102] As an optional implementation manner, the embodiment of the present application provides a reset hole 117 on the side wall of the housing 116, wherein one end of the ejector rod away from the magnetic member extends towards the reset hole 117.

[0103] It should be noted that with reference toFigure 5 and Figure 6 As shown, the ejector rod 103 can be contacted through the reset hole 117 to achieve manual reset pressing of the ejector rod 103. As needed, the central axis of the ejector rod 103 can coincide with the central axis of the reset hole 117 to facilitate pressing the end of the ejector rod 103.

[0104] The disconnector provided in the embodiment of the present application can select the automatic reset or manual reset mode according to different electric signal intensities, providing higher flexibility and adaptability. Minor faults can be quickly automatically restored, while serious faults require manual intervention to ensure the safety and reliability of the system.

[0105] For serious faults, the manual reset mechanism ensures that the staff has the opportunity to conduct a comprehensive inspection before resetting, avoiding secondary faults or safety hazards that may be caused by automatic reset. For minor faults, the automatic reset mechanism reduces the need for manual intervention, simplifies the operation process, and improves the response speed and efficiency of the system.

[0106] The power supply system provided in the embodiment of the present application includes a power conversion unit and the above-mentioned disconnector. The power conversion unit has a DC output terminal electrically connected to the disconnector;

[0107] The power conversion unit includes a fault detection module for detecting faults and sending fault signals;

[0108] The power conversion unit further includes a signal conversion module for receiving the fault signal and sending a first electric signal or a second electric signal to the flux release 100 through the DC output terminal.

[0109] The power supply system in the embodiment of the present application can perform precise fault identification, and the response mechanism reduces the risk of misoperation and enhances the stability and safety of the system. The power supply system in the embodiment of the present application has a real-time monitoring and rapid opening mechanism, which can effectively prevent the spread of faults and protect the safety of equipment and personnel.

[0110] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A magnetic flux release (100), characterized in that, It includes a bracket (101), an electromagnetic coil (102), and a push rod (103); the electromagnetic coil (102) is installed on the bracket (101), and the push rod (103) is slidably inserted into the electromagnetic coil (102); inside the electromagnetic coil (102), at least two moving iron cores are arranged at intervals along the axial direction on the push rod (103); one end of the electromagnetic coil is provided with a magnetic member (107), and the other end is provided with a driving member (114); the moving iron core close to the magnetic member is magnetically attracted by the magnetic member (107); when the electromagnetic coil (102) is energized, at least one of the moving iron cores moves away from the magnetic member (107) along the axial direction of the push rod (103), and the push rod (103) drives the driving member (114) to move.

2. The magnetic flux release (100) according to claim 1, characterized in that, There are two moving iron cores; the two moving iron cores are slidably arranged inside the electromagnetic coil (102); a convex structure (104) is provided on the push rod (103); when the electromagnetic coil (102) is supplied with a first electrical signal, the first moving iron core (105) is driven to abut against the convex structure (104) and push the push rod (103) to move axially; or, when the electromagnetic coil (102) is supplied with a second electrical signal, the second moving iron core (106) is driven to abut against the first moving iron core (105) and push the push rod (103) to move axially through the convex structure (104); wherein, the signal intensity of the second electrical signal is greater than that of the first electrical signal; The electromagnetic coil (102) has a first terminal and a second terminal; when the first terminal is used as the input terminal and the second terminal is used as the output terminal, the first electrical signal is generated; when the second terminal is used as the input terminal and the first terminal is used as the output terminal, the second electrical signal is generated.

3. The magnetic flux release (100) according to claim 2, wherein, It further includes a compression spring element (108), one end of the compression spring element (108) abuts against the magnetic member (107), and the other end abuts against the second moving iron core (106); the magnetic member (107) attracts the second moving iron core (106), and the compression spring element (108) compresses to store elastic potential energy.

4. The magnetic flux release (100) according to claim 3, characterized in that, A receiving cavity (109) is formed inside the second moving iron core (106), and the compression spring element (108) is located inside the receiving cavity (109).

5. The magnetic flux release (100) according to any one of claims 2-4, characterized in that, It further includes a return spring (110); one end of the return spring (110) abuts against the end of the bracket (101) away from the magnetic member (107), and the other end abuts against the convex structure (104); the return spring (110) generates a force to push the push rod (103) close to the magnetic member (107).

6. The magnetic flux release (100) according to any one of claims 2-4, characterized in that, It further includes an intermediate spring (111); one end of the intermediate spring (111) abuts against the first moving iron core (105), and the other end abuts against the second moving iron core (106); the intermediate spring (111) generates a force to make the first moving iron core (105) and the second moving iron core (106) move away from each other.

7. The magnetic flux release (100) according to any one of claims 2-4, characterized in that, The central axis of the ejector rod (103) coincides with the central axis of the electromagnetic coil (102); a first through hole (112) is provided on the first moving iron core (105), and a second through hole (113) is provided on the second moving iron core (106). One end of the ejector rod (103) sequentially passes through the first through hole (112) and the second through hole (113).

8. An isolating switch, characterized in that, Comprising the flux release (100) according to any one of claims 2-7 and an operating mechanism (115); The operating mechanism (115) includes a release lever (1150); the driving member (114) of the flux release (100) abuts against the release lever (1150), so that the driving member (114) can drive the operating mechanism (115) to move synchronously, for controlling the separation of the fixed and moving contacts of the disconnecting switch; When a first electrical signal is applied, the driving member (114) drives the fixed and moving contacts to separate through the operating mechanism (115). After the first electrical signal is disconnected, the ejector rod (103) moves axially close to the magnetic member (107) under the elastic thrust and drives the driving member (114) to reset, so that the operating mechanism can drive the fixed and moving contacts to contact; Or, when a second electrical signal is applied, the driving member (114) drives the fixed and moving contacts to separate through the operating mechanism (115). After the second electrical signal is disconnected, the ejector rod (103) remains in place, so that the separated state of the fixed and moving contacts is maintained.

9. The disconnector according to claim 8, wherein, It further includes a housing (116), and a reset hole (117) is provided on the side wall of the housing (116); one end of the ejector rod away from the magnetic member (107) extends towards the reset hole (117).

10. A power supply system, characterized in that, Comprising a power conversion unit and the disconnecting switch according to claim 8 or 9, the power conversion unit having a DC output terminal electrically connected to the disconnecting switch; The power conversion unit includes a fault detection module for detecting faults and sending fault signals; The power conversion unit further includes a signal conversion module for receiving the fault signal and sending a first electrical signal or a second electrical signal to the flux release (100) through the DC output terminal.

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