An arc suppression coil complete

Abstract

The utility model relates to arc suppression coil technical field, and disclose a kind of arc suppression coil complete set device, the utility model is provided with arc suppression system controller and vacuum contactor, when arc suppression system controller judges that system occurs single-phase grounding fault, adopts vacuum contactor bypass fault point mode, system single-phase grounding fault is converted into metallic grounding, to reach the purpose of original fault point arc extinction, it is convenient to improve the ability of power system fast arc extinction, reduce the probability of secondary fire occurrence caused by arc light unable to extinguish, simultaneously, detachable filter screen is provided, when periodically maintaining device, open filter screen mounting cover, filter screen is detached, it is cleaned or replaced, only need to place filter screen in filter screen placing groove during installation, close filter screen mounting cover, effectively guarantee the filtering effect of filter screen, guarantee the air circulation of inlet, further guarantee the heat dissipation effect of device.

Description

Technical Field

[0001] This utility model relates to the field of arc suppression coil technology, and in particular to a complete set of arc suppression coil equipment. Background Technology

[0002] When a ground fault occurs in a power system, it is mostly a single-phase ground fault. When the system is grounded through an arc suppression coil, even if a single-phase ground fault occurs, the system can be allowed to operate with the fault for a longer period of time, depending on the capacity of the arc suppression coil. During this period, quickly selecting and disconnecting the faulty line and taking measures to extinguish the grounding arc can effectively prevent power system resonance and secondary fire accidents.

[0003] In Chinese Patent Publication No. CN220475408U, this utility model provides a complete set of arc suppression coil devices, relating to the field of arc suppression coil technology. It includes: a housing, with pillars installed at all four ends of the bottom of the housing; a structure for easy installation located at the center of the bottom of the housing's inner cavity; and heat dissipation devices located in the middle of both sides of the inner cavity. In this utility model, the arc suppression coil is placed on top of a fixed block and on both sides of a T-shaped fixed plate, pushed in to abut against a limiting plate. Because the output ends of the forward and reverse motors are fixedly connected to threaded rods, and movable plates are threaded onto the surface of the threaded rods, with guide rods movably embedded at both ends of the movable plates, and three clamping blocks installed on the top of each movable plate, the forward and reverse motors drive the threaded rods to rotate, simultaneously driving the movable plates and moving them along the directions of the guide rods at both ends. A barrier mesh on one side of the inner frame can prevent items from being placed inside the frame, thus preventing damage to the fan blades. The motor then drives the transmission shaft and fan blades to rotate.

[0004] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: The grounding method of the power system is selected based on the system capacitance current and the importance of the line. In order to enable the electrical load to continue to operate when a single-phase ground fault occurs on the line, arc suppression coil grounding is usually selected, coupled with a low-current line selection method. Based on the line selection result, the faulty line is manually shut down. This method is not only inefficient, but also prone to causing system resonance during the grounding process, resulting in overvoltage, equipment breakdown, and even secondary fire accidents caused by the residual current after arc suppression coil compensation igniting flammable materials. At the same time, when the arc suppression coil complete set of equipment is in use, the air inlet filters the air. As dust covers the filter screen, it will cause the air inlet to be blocked, affecting the heat dissipation effect of the device. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the existing technology has the disadvantage of arc extinguishing when a single-phase ground fault occurs in the power system. To address this, we propose a complete set of arc extinguishing coil devices.

[0006] To achieve the above objectives, this application adopts the following technical solution: an arc suppression coil assembly, comprising: an arc suppression coil assembly housing, a partition plate fixedly connected inside the arc suppression coil assembly housing, an arc suppression coil body disposed on one side of the partition plate, a component mounting plate fixedly connected to the other side of the partition plate, an arc suppression system controller fixedly connected to the side of the component mounting plate, a vacuum contactor disposed at the bottom of the arc suppression system controller, a flow groove opened inside the partition plate, a cooling fan fixedly connected to a side plate of the arc suppression coil assembly housing, a filter screen placement groove opened on the other side of the arc suppression coil assembly housing, a filter screen tightly fitted inside the filter screen placement groove, a filter screen mounting cover tightly fitted to the side of the filter screen, a mounting cover fixing block fixedly connected to the outer wall of the filter screen mounting cover, a pin housing disposed at the bottom of the mounting cover fixing block, a pin body slidably connected inside the pin housing, and a pin spring fixedly connected to one end of the pin body.

[0007] Preferably, the arc suppression coil body and the arc suppression coil assembly housing are fixedly connected, and the vacuum contactor and the component mounting plate are fixedly connected.

[0008] Preferably, the flow channel is located at the bottom of the partition plate and is used for air circulation.

[0009] Preferably, the filter screen mounting cover and the arc suppression coil assembly housing are movably connected, and the filter screen placement slot is connected to the top of the arc suppression coil assembly housing.

[0010] Preferably, the pin housing and the arc suppression coil assembly housing are fixedly connected, and the pin spring and the pin housing are also fixedly connected.

[0011] Preferably, a processor is mounted on the top of the cooling fan, a temperature sensor is fixedly connected inside the processor, an electric telescopic rod is mounted on the bottom of the temperature sensor, a conductive rod is mounted on the side of the electric telescopic rod, a power supply is mounted on the other side of the conductive rod, a fan power supply is movably connected to the top of the conductive rod, a return spring is fixedly connected to the outer wall of the conductive rod, and a spring fixing block is fixedly connected to the side of the return spring.

[0012] Preferably, the device power supply and the processor are fixedly connected, the fan power supply and the processor are fixedly connected, and the spring retaining block and the processor are fixedly connected.

[0013] Preferably, the processor and the housing of the arc suppression coil assembly are fixedly connected, and the electric telescopic rod and the processor are fixedly connected.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] This invention includes an arc suppression system controller and a vacuum contactor. When the arc suppression system controller determines that a single-phase ground fault has occurred in the system, it uses the vacuum contactor to bypass the fault point, converting the single-phase ground fault into a metallic ground fault, thereby achieving the purpose of extinguishing the arc at the original fault point. This facilitates the improvement of the power system's ability to quickly extinguish arcs and reduces the probability of secondary fires caused by the inability to extinguish arcs. Simultaneously, a detachable filter screen is provided. During regular maintenance, the filter screen mounting cover can be opened to remove the filter screen for cleaning or replacement. During installation, simply place the filter screen in the filter screen placement slot and close the filter screen mounting cover. This effectively ensures the filtration effect of the filter screen and guarantees airflow at the air inlet. The U-shaped air duct extends the airflow path within the device, increasing the heat exchange time between the air and internal components. Simultaneously, the curved path guides the airflow to evenly cover all heat-generating components, preventing the accumulation of local hot spots and further ensuring the device's heat dissipation effect. Attached Figure Description

[0016] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0017] Figure 1 This is a front view structural diagram of the arc suppression coil assembly of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the arc suppression coil assembly of this utility model;

[0019] Figure 3 This is an enlarged structural schematic diagram of the flow channel portion of this utility model;

[0020] Figure 4 This is an exploded structural diagram of the filter screen part of this utility model;

[0021] Figure 5 This is an exploded view of the pin portion of this utility model;

[0022] Figure 6 This is an enlarged structural schematic diagram of the processor section of this utility model.

[0023] Legend: 1. Arc suppression coil assembly housing; 2. Partition plate; 3. Arc suppression coil body; 4. Arc suppression system controller; 5. Vacuum contactor; 6. Flow channel; 7. Cooling fan; 8. Filter screen mounting cover; 9. Filter screen; 10. Filter screen placement slot; 11. Mounting cover fixing block; 12. Pin housing; 13. Pin body; 14. Pin spring; 15. Component mounting plate; 16. Processor; 17. Temperature sensor; 18. Electric telescopic rod; 19. Conductive rod; 20. Device power supply; 21. Fan power supply; 22. Return spring; 23. Spring fixing block. Detailed Implementation

[0024] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0025] According to one embodiment of the present invention, in conjunction with Figures 1 to 6 As shown.

[0026] The grounding method of a power system is selected based on the system's capacitive current and the importance of the line. To ensure the continued operation of the electrical load during a single-phase ground fault, arc suppression coil grounding is typically used, coupled with a low-current line selection method. Based on the selection result, the faulty line is manually shut down. This method is not only inefficient, but also prone to causing system resonance and overvoltage during the grounding process, leading to equipment breakdown. Furthermore, the residual current after arc suppression coil compensation can ignite flammable materials, causing secondary fires. Additionally, during the use of the arc suppression coil assembly, the air inlet filters the air; as dust accumulates on the filter, it can clog the inlet, affecting the device's heat dissipation. To address this issue, this invention incorporates the following design in the arc suppression coil assembly:

[0027] An arc suppression coil assembly includes: an arc suppression coil assembly housing 1; a partition plate 2 fixedly connected inside the arc suppression coil assembly housing 1; an arc suppression coil body 3 disposed on one side of the partition plate 2; a component mounting plate 15 fixedly connected to the other side of the partition plate 2; and an arc suppression system controller 4 fixedly connected to the side of the component mounting plate 15. The arc suppression system controller 4 is a core control device in the power system used to monitor, judge, and handle single-phase grounding faults. Its core function is to quickly extinguish the arc at the fault point through automated means, ensuring the safe and stable operation of the power grid. A vacuum contactor 5 is disposed at the bottom of the arc suppression system controller 4. The vacuum contactor 5 is a switching device that uses vacuum as the arc extinguishing medium. It is mainly used for frequently connecting and disconnecting power circuits. It has strong arc extinguishing capability, long life, and high reliability, and is widely used in medium and low voltage power systems and industrial fields. A flow groove 6 is opened inside the partition plate 2. A cooling fan 7 is fixedly connected to a plate on one side of the arc suppression coil assembly housing 1. A filter screen placement groove 10 is provided on the other side of the housing 1 of the arc coil assembly. A filter screen 9 is tightly fitted inside the filter screen placement groove 10. A filter screen mounting cover 8 is tightly fitted to the side of the filter screen 9. A mounting cover fixing block 11 is fixedly connected to the outer wall of the filter screen mounting cover 8. A pin housing 12 is provided at the bottom of the mounting cover fixing block 11. A pin body 13 is slidably connected inside the pin housing 12. A pin spring 14 is fixedly connected to one end of the pin body 13. The arc suppression coil body 3 is fixedly connected to the housing 1 of the arc suppression coil assembly. The vacuum contactor 5 is fixedly connected to the component mounting plate 15. The flow groove 6 is located at the bottom of the partition plate 2 and is used for air circulation. The filter screen mounting cover 8 is movably connected to the housing 1 of the arc suppression coil assembly. The filter screen placement groove 10 is located at the top of the housing 1 of the arc suppression coil assembly. The pin housing 12 is fixedly connected to the housing 1 of the arc suppression coil assembly. The pin spring 14 is fixedly connected to the pin housing 12.

[0028] When the device is in use, the arc suppression system controller 4, through real-time monitoring of system zero-sequence voltage, current and other parameters, accurately determines that a single-phase ground fault has occurred, and immediately issues a command. The vacuum contactor 5 then quickly operates. This operation transforms the originally unstable and easily reignited arc grounding into a stable metallic grounding, causing the arc at the fault point to be forcibly extinguished due to the bypass current diversion. At the same time, when the device is being maintained, the plug body 13 is slid down, at which point the plug spring 14 is compressed and contracted. When the plug body 13 is completely separated from the mounting cover fixing block 11, the filter screen mounting cover 8 is opened, and then the filter screen 9 is disassembled, cleaned and replaced. After the operation is completed, the filter screen mounting cover 8 is closed. When the device is running, the cooling fan 7 exhausts the heat inside the device. Outside cold air enters the device after being filtered by the filter screen 9, then passes through the flow channel 6, and finally exits from the cooling fan 7. The air duct inside the device is U-shaped.

[0029] The system is equipped with an arc suppression system controller 4 and a vacuum contactor 5. When the arc suppression system controller 4 determines that a single-phase ground fault has occurred in the system, the vacuum contactor 5 bypasses the fault point to convert the single-phase ground fault into a metallic ground fault, thereby achieving the purpose of extinguishing the arc at the original fault point. This facilitates the improvement of the power system's ability to quickly extinguish arcs and reduces the probability of secondary fires caused by the inability to extinguish arcs. At the same time, a removable filter screen 9 is provided. When performing regular maintenance on the device, the filter screen mounting cover 8 is opened, the filter screen 9 is removed, and it is cleaned or replaced. During installation, the filter screen 9 is simply placed in the filter screen placement slot 10 and the filter screen mounting cover 8 is closed. This effectively ensures the filtration effect of the filter screen 9 and ensures airflow at the air inlet. The U-shaped air duct increases the heat exchange time between the air and the internal components by extending the airflow path in the device. At the same time, the curved path guides the airflow to evenly cover each heat-generating component, avoiding the accumulation of local hot spots and further ensuring the heat dissipation effect of the device.

[0030] A processor 16 is mounted on the top of the cooling fan 7. A temperature sensor 17 is fixedly connected inside the processor 16. An electric telescopic rod 18 is mounted on the bottom of the temperature sensor 17. A conductive rod 19 is mounted on the side of the electric telescopic rod 18. A device power supply 20 is mounted on the other side of the conductive rod 19. A fan power supply 21 is movably connected to the top of the conductive rod 19. A return spring 22 is fixedly connected to the outer wall of the conductive rod 19. A spring fixing block 23 is fixedly connected to the side of the return spring 22. The device power supply 20 is fixedly connected to the processor 16, the fan power supply 21 is fixedly connected to the processor 16, the spring fixing block 23 is fixedly connected to the processor 16, the processor 16 is fixedly connected to the arc suppression coil assembly housing 1, and the electric telescopic rod 18 is fixedly connected to the processor 16.

[0031] When the device is in use, the temperature sensor 17 monitors the internal temperature of the device in real time. When the internal temperature of the device exceeds the specified value, the temperature sensor 17 transmits a signal to the processor 16. The processor 16 causes the electric telescopic rod 18 to extend. The electric telescopic rod 18 pushes the conductive rod 19 to contact the device power supply 20. At this time, the fan power supply 21 is powered on, and the cooling fan 7 starts to run to dissipate heat from the device. When the internal temperature of the device is lower than the specified value, the electric telescopic rod 18 retracts. Under the elastic action of the return spring 22, the conductive rod 19 returns to its initial position. The intelligent operation of the cooling fan 7 effectively reduces the energy consumption of the device.

[0032] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A complete set of arc suppression coil equipment, characterized in that, include: The arc suppression coil assembly housing includes a partition plate fixedly connected inside. An arc suppression coil body is mounted on one side of the partition plate, and a component mounting plate is fixedly connected to the other side. An arc suppression system controller is fixedly connected to the side of the component mounting plate, and a vacuum contactor is located at the bottom of the arc suppression system controller. A flow groove is formed inside the partition plate. A cooling fan is connected to a fixed plate on one side of the arc suppression coil assembly housing. A filter screen placement groove is formed on the other side of the arc suppression coil assembly housing, and a filter screen is tightly fitted inside the filter screen placement groove. A filter screen mounting cover is tightly fitted to the side of the filter screen. A mounting cover fixing block is fixedly connected to the outer wall of the filter screen mounting cover. A pin housing is located at the bottom of the mounting cover fixing block, and a pin body is slidably connected inside the pin housing. A pin spring is fixedly connected to one end of the pin body.

2. The arc suppression coil assembly according to claim 1, characterized in that: The arc-suppression coil body is fixedly connected to the arc-suppression coil assembly housing, and the vacuum contactor is fixedly connected to the component mounting plate.

3. The arc suppression coil assembly according to claim 1, characterized in that: The flow channel is located at the bottom of the partition plate and is used for air circulation.

4. The arc suppression coil assembly according to claim 1, characterized in that: The filter screen mounting cover is movably connected to the housing of the arc suppression coil assembly, and the filter screen placement slot is connected to the top of the housing of the arc suppression coil assembly.

5. The arc suppression coil assembly according to claim 1, characterized in that: The pin housing is fixedly connected to the arc suppression coil assembly housing, and the pin spring is fixedly connected to the pin housing.

6. The arc suppression coil assembly according to claim 1, characterized in that: A processor is mounted on the top of the cooling fan. A temperature sensor is fixedly connected inside the processor. An electric telescopic rod is mounted on the bottom of the temperature sensor. A conductive rod is mounted on one side of the electric telescopic rod. A power supply is mounted on the other side of the conductive rod. A fan power supply is movably connected to the top of the conductive rod. A return spring is fixedly connected to the outer wall of the conductive rod. A spring fixing block is fixedly connected to the side of the return spring.

7. The arc suppression coil assembly according to claim 6, characterized in that: The power supply of the device is fixedly connected to the processor, the fan power supply is fixedly connected to the processor, and the spring fixing block is fixedly connected to the processor.

8. The arc suppression coil assembly according to claim 6, characterized in that: The processor is fixedly connected to the housing of the arc suppression coil assembly, and the electric telescopic rod is fixedly connected to the processor.

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