Metal particle capturing device convenient to disassemble and clean and cleaning method of metal particle capturing device

Abstract

The invention discloses a metal particle capturing device convenient to disassemble and clean and a cleaning method of the metal particle capturing device, and relates to the technical field of direct-current GIS. The metal particle capturing device comprises a metal particle trap grid plate, a metal particle collecting cabin, a metal particle cleaning cabin, a wire winding and a permanent magnet; the metal particle collecting cabin comprises a shell, a metal particle collecting disc, a sealing separation disc, an in-cabin corrugated pipe and a butterfly valve, the shell comprises an upper shell, a lower shell, an upper corrugated pipe, a lower corrugated pipe and a metal magnetic conductive plate, the upper end of the metal particle collecting disc is in sealing connection with the inner wall of the metal magnetic conductive plate, and the lower end of the metal particle collecting disc is connected with the upper portion of the inner side of the sealing separation disc through the in-cabin corrugated pipe; the butterfly valve is arranged at the lower part of the inner side of the sealing separation disc; the wire winding is arranged on the outer side of the metal magnetic conductive plate, the permanent magnet is coaxially fixed on the outer side of the wire winding, and an air gap is reserved between the permanent magnet and the wire winding. According to the method, the particles can be conveniently recycled on the premise that the GIS closed environment is not damaged, and the particle diffusion risk in the cleaning process is completely eradicated.

Description

Technical Field

[0001] The present application relates to the field of DC GIS technology, and in particular to a metal particle capture device that is easy to disassemble and clean, and a cleaning method thereof. Background Art

[0002] The presence of metal particles is unavoidable in gas-insulated switchgear (GIS), causing insulation contamination under both AC and DC voltages. Specifically, in AC voltage environments, metal particles are affected by the alternating electric field, causing their movement direction to change periodically. In DC voltage environments, however, due to the continuous unidirectional electric field, metal particles are more likely to collide back and forth between the high-voltage conductor and the outer casing, inducing partial discharge and even insulation breakdown, posing a significant threat to the safe operation of the equipment. Therefore, technology to suppress the movement of metal particles within GIS is crucial for ensuring the insulation performance of the equipment.

[0003] Existing technology effectively captures and controls the movement of metal particles by installing a metal particle capture device within the GIS. This device, based on the Faraday cage principle, utilizes metal shielding structures on either side of the trap groove to create a low-field zone within the trap. Once a metal particle falls into the trap, the electric field strength in the area surrounding it is significantly reduced, and the electric field force acting on it is insufficient to allow it to escape. Consequently, the particle is stably restrained, preventing any further damage to the GIS insulation.

[0004] However, existing metal particle capture devices have significant drawbacks when it comes to cleaning metal particles: workers must first vent the GIS, remove the particle trap for cleaning, and finally inflate and reset the device. During this process, the airflow during the venting phase can carry metal particles from the trap to other areas of the GIS cavity, causing secondary dispersion of the cleaned particles, seriously affecting the cleaning effect. Furthermore, the frequent inflation and deflation procedures are cumbersome and time-consuming, significantly reducing equipment maintenance efficiency. Therefore, the present invention proposes a metal particle capture device and cleaning method that is easily disassembled and cleaned. Summary of the Invention

[0005] The embodiments of the present application provide a metal particle capture device and a cleaning method thereof that are easy to disassemble and clean, so that particles can be easily recovered without destroying the closed environment of GIS and the risk of particle diffusion during the cleaning process can be eliminated.

[0006] In a first aspect, the present application provides a metal particle capture device that is easy to disassemble and clean, comprising: a metal particle trap grid plate, a metal particle collection chamber, a metal particle cleaning chamber, a wire winding, and a permanent magnet;

[0007] One end of the metal particle collection chamber is fixedly connected to the GIS shell;

[0008] The metal particle trap grid plate is arranged at the top opening of the metal particle collection chamber, and the metal particle collection chamber is connected with the interior of the GIS shell through the metal particle trap grid plate;

[0009] The other end of the metal particle collecting chamber is detachably connected to the metal particle cleaning chamber;

[0010] The metal particle collection cabin comprises a shell, a metal particle collection plate, a sealing separation plate, a bellows in the cabin and a butterfly valve;

[0011] The housing comprises an upper shell, a lower shell, an upper bellows, a lower bellows and a metal magnetic conductive plate;

[0012] The metal magnetic conductive plate is a cylindrical sleeve structure;

[0013] The upper shell is connected to one end of the metal magnetic conductive plate through the upper bellows;

[0014] The other end of the metal magnetic conductive plate is connected to the lower shell through the lower bellows;

[0015] The sealing separation disk is arranged in the lower shell, and a first through hole is opened in the center of the sealing separation disk;

[0016] The metal particle collecting tray is located inside the metal magnetic conductive plate and is funnel-shaped;

[0017] The upper end of the metal particle collecting plate is sealed with the inner wall of the metal magnetic conductive plate, and the lower end is connected to the upper inner side of the sealing separation plate through the bellows in the cabin;

[0018] The butterfly valve is arranged at the inner lower part of the sealing separation plate, and is used to achieve airtight isolation between the metal particle collection chamber and the metal particle cleaning chamber;

[0019] The wire winding is arranged outside the metal magnetic conductive plate;

[0020] The permanent magnet is coaxially fixed to the outside of the wire winding through a fixing frame, and an air gap is left between the permanent magnet and the wire winding.

[0021] Optionally, the metal particle trap grid plate is located on the inner wall of the GIS shell, and the linear distance between the metal particle trap grid plate and the insulator is 5 to 30 cm.

[0022] Optionally, a plurality of grids and a plurality of baffles are alternately and evenly arranged on the metal particle trap grid plate;

[0023] The baffle is an arc-shaped plate protruding toward one side of the metal particle collecting chamber.

[0024] Optionally, the butterfly valve includes a valve body, a valve plate, a sealing seat, a first sealing port, a fixing rod and an operating rod;

[0025] The sealing seat and the first sealing port are symmetrically arranged on the outer surface of the valve body along the radial direction of the valve body;

[0026] The valve plate is arranged in the valve body;

[0027] The fixing rod and the operating rod are symmetrically connected to both sides of the valve plate along the radial direction of the valve plate;

[0028] A second sealing opening coaxial with the first sealing opening is provided on the outer side of the lower shell;

[0029] One end of the fixing rod away from the valve plate passes through the valve body and extends into the sealing seat;

[0030] The fixing rod is rotatably connected to the valve body and the sealing seat respectively;

[0031] One end of the operating rod away from the valve plate passes through the valve body, the first sealing opening, the lower shell and the second sealing opening in sequence, and extends outward;

[0032] The operating rod is rotatably connected to the valve body, the first sealing port, the lower shell and the second sealing port respectively.

[0033] Optionally, a first annular groove is formed on the inner wall of the valve body;

[0034] A first sealing ring is provided in the first annular groove;

[0035] The valve plate is a disc-shaped structure;

[0036] The first sealing ring is a cylindrical sleeve structure, and the outer diameter of the first sealing ring is adapted to the inner diameter of the first annular groove, and the inner diameter of the first sealing ring is adapted to the outer diameter of the valve plate.

[0037] Optionally, the sealing seat includes a sealing seat body and a first sealing cover disc;

[0038] One end of the sealing seat body is fixedly connected to the outer surface of the valve body, and the other end is detachably connected to the first sealing cover plate;

[0039] A second sealing ring is provided between the first sealing cover plate and the sealing seat body;

[0040] A second through hole is provided in the center of the sealing seat body for the fixing rod to pass through;

[0041] The inner diameter of the second through hole is adapted to the outer diameter of the fixing rod.

[0042] Optionally, the first sealing port and the second sealing port have the same structure;

[0043] The first sealing port and the second sealing port each include a sealing port body and a second sealing cover plate;

[0044] A third through hole and a fourth through hole for the operating rod to pass through are respectively formed in the center of the sealing port body and the second sealing cover plate;

[0045] The inner diameters of the third through hole and the fourth through hole are both adapted to the outer diameter of the operating rod;

[0046] A second annular groove communicating with the third through hole is formed at one end of the sealing port body away from the valve body;

[0047] A third sealing ring and a metal gasket are sequentially arranged in the second annular groove from the inside to the outside;

[0048] The second sealing cover disc is detachably mounted on one end of the sealing port body away from the valve body, and is used to press and fix the third sealing ring and the metal gasket in the second annular groove to achieve sealing and limiting of the operating rod.

[0049] Optionally, the fixed rod and the operating rod are both cylindrical structures;

[0050] Rectangular limit blocks are provided at both ends of the operating rod and at one end of the fixing rod close to the valve plate;

[0051] Plug holes matching the shape of the rectangular limit block are correspondingly provided on both sides of the valve plate;

[0052] The fixing rod and the operating rod are both plugged into the valve plate through the rectangular limiting block.

[0053] Optionally, the housing and the metal particle cleaning chamber are both hollow cylindrical structures;

[0054] The inner diameter of the shell is the same as the inner diameter of the metal particle cleaning chamber;

[0055] The outer diameter of the housing is the same as the outer diameter of the metal particle cleaning chamber;

[0056] The top of the metal particle cleaning chamber is connected to the bottom of the lower shell through a first flange.

[0057] Optionally, the wire winding is composed of at least one layer of wire spirally wound around the outer side of the metal magnetic conductive plate;

[0058] The outer surface of the wire is coated with insulating paint, and the two ends of the wire are respectively connected to the positive electrode and the negative electrode of the AC power supply.

[0059] Optionally, the fixing frame includes a fixing disc and a strip-shaped fixing plate;

[0060] The fixed disk is a cylindrical sleeve structure;

[0061] The fixed disk is coaxially sleeved outside the wire winding, and the top and bottom of the fixed disk are fixedly connected to the upper shell and the lower shell respectively through the strip-shaped fixing plate;

[0062] A plurality of permanent magnets are uniformly fixed on the inner surface of the fixed disk along the circumferential direction;

[0063] The plurality of permanent magnets are located on the same horizontal plane, and the permanent magnets are directly facing the wire winding;

[0064] The magnetic field direction of the permanent magnet is perpendicular to the metal magnetic conductive plate and points inward.

[0065] Optionally, the air gap is 0.2-5 mm.

[0066] A second aspect of the present application provides a cleaning method based on the above-mentioned metal particle capture device that is easy to disassemble and clean, which specifically includes the following steps:

[0067] S1. Applying an alternating current to the wire winding causes the wire winding to generate an Ampere force with periodic direction changes in the alternating magnetic field, thereby driving the metal magnetic conductive plate and the metal particle collection disk connected to the metal magnetic conductive plate to vibrate in the vertical direction, forcing the metal particles attached to the metal particle collection disk to break away and fall into the metal particle cleaning chamber through the bottom opening of the metal particle collection disk under the action of gravity;

[0068] S2. Adjusting the frequency and amplitude of the alternating current to control the vibration amplitude and frequency of the metal particle collecting plate, and continuing the vibration for a preset time;

[0069] S3, turning off the AC power supply to stop the vibration of the metal particle collecting plate;

[0070] S4, closing the butterfly valve to form an airtight isolation between the metal particle collection chamber and the metal particle cleaning chamber;

[0071] S5, removing the metal particle cleaning chamber from the metal particle collecting chamber, and cleaning the metal particles accumulated in the metal particle cleaning chamber;

[0072] S6, reinstalling the cleaned metal particle cleaning chamber to the bottom of the metal particle collecting chamber;

[0073] S7, opening the butterfly valve to restore the communication between the metal particle collecting chamber and the metal particle cleaning chamber.

[0074] As can be seen from the above technical solutions, the embodiments of the present application have the following advantages: This metal particle capture device, which is easy to disassemble and clean, utilizes a removable connection between the metal particle collection chamber and the metal particle cleaning chamber, which is sealed with a butterfly valve on the lower inner side of the separation plate to achieve airtight isolation. This allows the cleaning chamber to be removed independently without exhausting the entire GIS. This avoids the secondary escape of metal particles during the exhaust phase, where they diffuse with the airflow to other areas of the GIS cavity, as is the case with conventional devices. This significantly improves cleaning effectiveness. Furthermore, the device eliminates the traditional overall air filling and deflating process, significantly simplifying maintenance operations, reducing maintenance time, and effectively improving equipment maintenance efficiency. The device utilizes a wire winding on the outer side of the metal magnetic plate and a coaxially fixed permanent magnet. When an alternating current is applied, the Ampere force drives the metal magnetic plate and the funnel-shaped metal particle collection plate to vibrate up and down. This vibration causes metal particles attached to the metal particle collection plate to detach and fall through the bottom opening of the metal particle collection plate into the metal particle cleaning chamber. This eliminates the need for direct human contact with the metal particle trap grid, achieving automatic metal particle detachment and collection, and enhancing the automation of the cleaning process. Furthermore, the funnel-shaped metal particle collection tray guides particles down the slope, which, combined with the vibration effect, further improves particle detachment efficiency. Due to the elasticity of the bellows, upper bellows, and lower bellows within the chamber, a flexible conduction path for vibration is provided while ensuring sealing performance, ensuring effective transmission of vibration energy. Furthermore, the butterfly valve quickly disconnects the metal particle collection chamber from the metal particle cleaning chamber during cleaning, maintaining stable air pressure within the GIS and preventing the impact of frequent inflation and deflation on the equipment's insulation performance. The overall structure is compact and easy to maintain, fundamentally resolving the existing problems of cumbersome cleaning processes, inefficiency, and secondary contamination, effectively ensuring the long-term, reliable operation of GIS equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] Figure 1 This is a schematic diagram of the metal particle capture device and GIS assembled for easy disassembly and cleaning in an embodiment of the present application;

[0076] Figure 2 A quarter cross-sectional view of a metal particle capture device that is easy to disassemble and clean in an embodiment of the present application;

[0077] Figure 3 This is a schematic diagram of the structure of the butterfly valve in the embodiment of the present application;

[0078] Figure 4 Schematic diagram of the connection structure between the second sealing port, the lower housing and the operating rod in the embodiment of the present application;

[0079] Figure 5 This is a planar schematic diagram of the magnetic field direction of the permanent magnet in the embodiment of the present application.

[0080] Wherein, the accompanying drawings are marked as follows:

[0081] 1-metal particle capture device, 2-GIS shell, 3-valve body, 4-valve plate, 5-metal particle collection plate, 6-sealing separation plate, 7-cabin bellows, 8-first sealing port, 9-second sealing port, 10-operating rod, 11-metal particle trap grid plate, 12-upper shell, 13-upper bellows, 14-metal magnetic conductive plate, 15-lower bellows, 16-lower shell, 17-metal particle cleaning chamber, 18-permanent magnet, 19-wire winding, 20-first sealing ring, 21-first flange, 22-fixing plate, 23-second flange, 24-strip fixing plate, 25-sealing seat, 26-fixing rod, 27-sealing seat body, 28-first sealing cover plate, 29-second sealing ring, 30-sealing port body, 31-second sealing cover plate, 32-third sealing ring, 33-metal gasket. DETAILED DESCRIPTION

[0082] In order to help those skilled in the art better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0083] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0084] Unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this application.

[0085] This application provides an embodiment of a metal particle capture device that is easy to disassemble and clean. Figure 1 and Figure 2 .

[0086] The metal particle capturing device that is easy to disassemble and clean in this embodiment includes: a metal particle trap grid plate 11, a metal particle collecting chamber, a metal particle cleaning chamber 17, a wire winding 19 and a permanent magnet 18. One end of the metal particle collecting chamber is fixedly connected to the GIS shell 2. The metal particle trap grid plate 11 is arranged at the top opening of the metal particle collecting chamber, and the metal particle collecting chamber is connected to the inside of the GIS shell 2 through the metal particle trap grid plate 11; the other end of the metal particle collecting chamber is detachably connected to the metal particle cleaning chamber 17. The metal particle collecting chamber includes an outer shell, a metal particle collecting plate 5, a sealing separation plate 6, a bellows 7 in the chamber and a butterfly valve. The outer shell includes an upper shell 12, a lower shell 16, an upper bellows 13, a lower bellows 15 and a metal magnetic plate 14. The metal magnetic plate 14 is a cylindrical sleeve structure. The upper shell 12 It is connected to one end of the metal magnetic plate 14 through the upper bellows 13, and the other end of the metal magnetic plate 14 is connected to the lower shell 16 through the lower bellows 15. The sealed separation disk 6 is arranged in the lower shell 16, and a first through hole is opened in the center of the sealed separation disk 6; the metal particle collection disk 5 is located in the metal magnetic plate 14, and the metal particle collection disk 5 is funnel-shaped, the upper end of the metal particle collection disk 5 is sealed with the inner wall of the metal magnetic plate 14, and the lower end is connected to the upper inner part of the sealed separation disk 6 through the bellows 7 in the cabin; the butterfly valve is arranged on the lower inner part of the sealed separation disk 6, which is used to achieve airtight isolation between the metal particle collection cabin and the metal particle cleaning cabin 17; the wire winding 19 is arranged on the outside of the metal magnetic plate 14, and the permanent magnet 18 is coaxially fixed to the outside of the wire winding 19 through a fixing frame, and an air gap is left between the permanent magnet 18 and the wire winding 19.

[0087] It should be noted that this metal particle capture device 1, designed for easy disassembly and cleaning, utilizes a removable connection between the metal particle collection chamber and the metal particle cleaning chamber 17. This connection, coupled with a butterfly valve on the lower inner side of the sealing separator plate 6, achieves airtight isolation. This allows the cleaning chamber to be removed independently without exhausting the entire GIS. This avoids the secondary escape of metal particles during the exhaust phase, where they diffuse with the airflow to other areas of the GIS cavity, as is the case with conventional techniques. This significantly improves cleaning effectiveness. Furthermore, the device eliminates the traditional overall air filling and deflating process, significantly simplifying maintenance operations, reducing maintenance time, and effectively improving equipment maintenance efficiency. The device's wire windings 19 on the outer side of the metal magnetic plate 14 work in conjunction with a coaxially fixed permanent magnet 18. When an alternating current is applied, the Ampere force drives the metal magnetic plate 14 and the funnel-shaped metal particle collection plate 5 to vibrate up and down. This vibration causes metal particles attached to the metal particle collection plate 5 to detach and fall through the bottom opening of the metal particle collection plate 5 into the metal particle cleaning chamber 17. This eliminates the need for direct human contact with the metal particle trap grid plate 11, achieving automatic metal particle detachment and collection, and enhancing the automation of the cleaning process. Furthermore, the funnel-shaped metal particle collection tray 5 guides particles down the slope, which, combined with the vibration effect, further improves particle detachment efficiency. The flexible bellows 7, upper bellows 13, and lower bellows 15 within the chamber provide a flexible conduction path for vibration while ensuring sealing performance, ensuring effective transmission of vibration energy. Furthermore, a butterfly valve quickly disconnects the metal particle collection chamber from the metal particle cleaning chamber 17 during cleaning, maintaining stable air pressure within the GIS and preventing the impact of frequent inflation and deflation on the device's insulation. The overall structure is compact and easy to maintain, fundamentally resolving the existing issues of cumbersome cleaning processes, inefficiency, and secondary contamination, effectively ensuring the long-term, reliable operation of the GIS equipment.

[0088] The above is the first embodiment of a metal particle capture device that is easy to disassemble and clean provided by the embodiment of the present application. The following is the second embodiment of a metal particle capture device that is easy to disassemble and clean provided by the embodiment of the present application. For details, please refer to Figures 1 to 5 .

[0089] The metal particle capturing device that is easy to disassemble and clean in this embodiment includes: a metal particle trap grid plate 11, a metal particle collecting chamber, a metal particle cleaning chamber 17, a wire winding 19 and a permanent magnet 18. One end of the metal particle collecting chamber is fixedly connected to the GIS shell 2. The metal particle trap grid plate 11 is arranged at the top opening of the metal particle collecting chamber, and the metal particle collecting chamber is connected to the inside of the GIS shell 2 through the metal particle trap grid plate 11. The metal particle trap grid plate 11 is used to construct a low electric field area inside the trap, so that the electric field force on the metal particles after entering the trap is reduced, reducing the probability of escaping the metal particle trap; the other end of the metal particle collecting chamber is detachably connected to the metal particle cleaning chamber 17. The metal particle collecting chamber includes an outer shell, a metal particle collecting disk 5, a sealing separation disk 6, a bellows 7 in the chamber and a butterfly valve. The outer shell includes an upper shell 12, a lower shell 16, an upper bellows 13, a lower bellows 15 and a metal The magnetic conductive plate 14 is a cylindrical sleeve structure. The upper shell 12 is connected to one end of the metal magnetic conductive plate 14 through the upper bellows 13, and the other end of the metal magnetic conductive plate 14 is connected to the lower shell 16 through the lower bellows 15. The sealed separation disk 6 is arranged in the lower shell 16, and a first through hole is opened in the center of the sealed separation disk 6; the metal particle collection disk 5 is located in the metal magnetic conductive plate 14, and the metal particle collection disk 5 is funnel-shaped. The upper end of the metal particle collection disk 5 is sealed with the inner wall of the metal magnetic conductive plate 14, and the lower end is connected to the upper part of the inner side (i.e., the opening side) of the sealed separation disk 6 through the bellows 7 in the cabin; the butterfly valve is arranged on the lower inner side of the sealed separation disk 6 to achieve airtight isolation between the metal particle collection cabin and the metal particle cleaning cabin 17; the wire winding 19 is arranged on the outside of the metal magnetic conductive plate 14, and the permanent magnet 18 is coaxially fixed to the outside of the wire winding 19 through a fixing frame, and an air gap is left between the permanent magnet 18 and the wire winding 19.

[0090] It should be noted that the purpose of adding the metal magnetic conductive plate 14 is to improve the magnetic field distribution so that more magnetic lines of force are perpendicular to the wire winding 19 , thereby increasing the Ampere force on the wire winding 19 .

[0091] Specifically, the upper end of the upper shell 12 is sealed with the GIS shell 2, and the lower end is fixedly connected to the upper end of the upper bellows 13. The lower end of the upper bellows 13 is fixedly connected to the upper end of the metal magnetic plate 14, which in turn is fixedly connected to the upper end of the lower bellows 15. The lower end of the lower bellows 15 is fixedly connected to the upper end of the lower shell 16, and the lower end of the lower shell 16 is detachably connected to the metal particle cleaning chamber 17. The sealing separation plate 6 is a disc-shaped structure, its outer side sealed with the inner wall of the lower shell 16.

[0092] The metal particle trap grid plate 11 is located on the inner wall of the GIS housing 2 , and the linear distance between the metal particle trap grid plate 11 and the insulator is 5 to 30 cm.

[0093] The metal particle trap grid plate 11 is evenly and alternately arranged with multiple grids and multiple baffles, which are arc-shaped plates protruding toward the metal particle collection chamber. Specifically, the cross-sectional shape of the baffles can be rectangular, diamond, trapezoidal or triangular, which is not limited here.

[0094] The butterfly valve includes a valve body 3, a valve disc 4, a sealing seat 25, a first sealing port 8, a fixing rod 26 and an operating rod 10. The sealing seat 25 and the first sealing port 8 are fixed on the outer surface of the valve body 3 radially symmetrically along the valve body 3. The valve disc 4 is arranged in the valve body 3. The fixing rod 26 and the operating rod 10 are connected on both sides of the valve disc 4 radially symmetrically along the valve disc 4. A second sealing port 9 coaxial with the first sealing port 8 is provided on the outside of the lower shell 16. The end of the fixing rod 26 away from the valve disc 4 passes through the valve body 3 and extends into the sealing seat 25. The fixing rod 26 is rotatably connected to the valve body 3 and the sealing seat 25 respectively; the end of the operating rod 10 away from the valve disc 4 passes through the valve body 3, the first sealing port 8, the lower shell 16 and the second sealing port 9 in sequence and extends outward; the operating rod 10 is rotatably connected to the valve body 3, the first sealing port 8, the lower shell 16 and the second sealing port 9 respectively.

[0095] It can be understood that the sealing seat 25 is used to support the fixed rod 26 and provide sealing, and the first sealing port 8 and the second sealing port 9 are used to ensure the sealing when the operating rod 10 rotates. The operating rod 10 drives the valve plate 4 to perform a vertical flipping movement around the axis of the fixed rod 26 and the operating rod 10, thereby realizing the opening and closing action of the butterfly valve. When the butterfly valve is closed, an airtight isolation is formed between the metal particle collection chamber and the metal particle cleaning chamber 17. When the butterfly valve is opened, the metal particle collection chamber and the metal particle cleaning chamber 17 are connected to each other.

[0096] A first annular groove is defined on the inner wall of the valve body 3, within which a first sealing ring 20 is disposed. The valve disc 4 is a disc-shaped structure, and the first sealing ring 20 is a cylindrical sleeve structure. The outer diameter of the first sealing ring 20 matches the inner diameter of the first annular groove, and the inner diameter of the first sealing ring 20 matches the outer diameter of the valve disc 4. Specifically, the valve body 3 may be a cylindrical sleeve structure, and the outer diameter of the first sealing ring 20 may be the same as the inner diameter of the first annular groove, and the inner diameter of the first sealing ring 20 may be the same as the outer diameter of the valve disc 4.

[0097] The sealing seat 25 includes a sealing seat body 27 and a first sealing cover plate 28. One end of the sealing seat body 27 is fixedly connected to the outer surface of the valve body 3, and the other end is detachably connected to the first sealing cover plate 28. A second sealing ring 29 is disposed between the first sealing cover plate 28 and the sealing seat body 27. A second through-hole is defined in the center of the sealing seat body 27 for the passage of the fixing rod 26. The inner diameter of the second through-hole matches the outer diameter of the fixing rod 26. Specifically, the inner diameter of the second through-hole can be the same as the outer diameter of the fixing rod 26. A third annular groove is defined at the end of the sealing seat body 27 away from the valve body 3 for receiving the second sealing ring 29. The sealing seat 25 is sealed by the first sealing cover plate 28 and the second sealing ring 29.

[0098] The first sealing port 8 and the second sealing port 9 have the same structure. Both the first sealing port 8 and the second sealing port 9 include a sealing port body 30 and a second sealing cover plate 31. The sealing port body 30 and the second sealing cover plate 31 are respectively provided with a third through hole and a fourth through hole in the center thereof for the operating rod 10 to pass through. The inner diameters of the third through hole and the fourth through hole are adapted to the outer diameter of the operating rod 10. The sealing port body 30 is provided with a second annular groove connected to the third through hole at one end away from the valve body 3. A third sealing ring 32 and a metal gasket 33 are sequentially arranged in the second annular groove from the inside to the outside to ensure airtightness. The second sealing cover plate 31 is detachably mounted on the end of the sealing port body 30 away from the valve body 3 to press and fix the third sealing ring 32 and the metal gasket 33 in the second annular groove to achieve sealing and limiting of the operating rod 10. Specifically, the inner diameters of the third through hole and the fourth through hole can be the same as the outer diameter of the operating rod 10.

[0099] The fixed rod 26 and the operating rod 10 are both cylindrical in structure. Rectangular stoppers are provided at both ends of the operating rod 10 and at the end of the fixed rod 26 near the valve disc 4. Sockets matching the shape of the rectangular stoppers are provided on both sides of the valve disc 4. The fixed rod 26 and the operating rod 10 are both connected to the valve disc 4 through the rectangular stoppers. Specifically, the ends of the rectangular stoppers are chamfered.

[0100] The outer shell and the metal particle cleaning chamber 17 are both hollow cylindrical structures. The inner diameter of the outer shell is the same as the inner diameter of the metal particle cleaning chamber 17, and the outer diameter of the outer shell is the same as the outer diameter of the metal particle cleaning chamber 17. The top of the metal particle cleaning chamber 17 is connected to the bottom of the lower shell 16 through a first flange 21, which is used to collect metal particles falling from the bottom opening of the metal particle collection plate 5.

[0101] The wire winding 19 consists of at least one layer of wire spirally wound around the outside of the metal magnetic plate 14. The outer surface of the wire is coated with insulating paint to ensure insulation between turns. The two ends of the wire are respectively connected to the positive and negative poles of the AC power supply to allow AC current to flow.

[0102] The fixing frame includes a fixing disk 22 and a strip fixing plate 24. The fixing disk 22 is a cylindrical sleeve structure. The fixing disk 22 is coaxially sleeved outside the wire winding 19. The top and bottom of the fixing disk 22 are respectively fixedly connected to the upper shell 12 and the lower shell 16 via the strip fixing plate 24. A plurality of permanent magnets 18 are evenly fixed on the inner surface of the fixing disk 22 along the circumference. The plurality of permanent magnets 18 are located on the same horizontal plane and face the wire winding 19. The magnetic field direction of the permanent magnets 18 is perpendicular to the metal magnetic conductive plate 14 and faces inward. Specifically, a second flange 23 is connected to the top and bottom of the fixing disk 22. There are multiple strip fixing plates 24, one end of which is fixedly connected to the second flange 23 by screws, and the other end is fixedly connected to the upper shell 12 / lower shell 16. The symmetry axis of the side of the fixing disk 22 and the symmetry axis of the side of the metal magnetic conductive plate 14 are in the same horizontal plane.

[0103] It is understandable that Figure 5 The magnetic field distribution generated by the permanent magnet 18 has a direction perpendicular to the metal magnetic plate 14 and inward, which is perpendicular to the direction of the wire current in the wire winding 19, thereby generating a vertical upward or downward Ampere force to drive the metal particle collection plate 5 to move up and down.

[0104] Specifically, the air gap is 0.2~5mm; the metal magnetic plate 14 is made of metal with good magnetic conductivity, such as iron, cobalt, nickel and their alloys; the cabin bellows 7, the upper bellows 13 and the lower bellows 15 are all metal bellows, which have a certain elasticity while sealing, thereby ensuring that the metal particle collection plate 5 can move up and down.

[0105] The present application also provides a cleaning method for the metal particle capture device that is easy to disassemble and clean, which specifically includes the following steps:

[0106] S1. When the metal particle capture device 1 needs to be cleaned, an alternating current is passed through the wire winding 19, causing the wire winding 19 to generate an Ampere force with periodic direction changes (alternating up and down) in the alternating magnetic field. This drives the metal magnetic plate 14 and the metal particle collection tray 5 connected to the metal magnetic plate 14 to vibrate in the up and down direction, forcing the metal particles attached to the metal particle collection tray 5 to break away and fall into the metal particle cleaning chamber 17 through the bottom opening of the metal particle collection tray 5 under the action of gravity;

[0107] S2. Adjust the frequency and amplitude of the alternating current to control the vibration amplitude and frequency of the metal particle collecting plate 5, and continue the vibration for a preset time;

[0108] It is understandable that, since the period of change in the direction of the Ampere force is the same as the period of the current, the vibration amplitude and frequency of the metal particle collecting disk 5 can be adjusted by changing the frequency and amplitude of the current.

[0109] S3, turning off the AC power supply to stop the vibration of the metal particle collecting plate 5;

[0110] S4, closing the butterfly valve by rotating the operating rod 10, so that the metal particle collection chamber and the metal particle cleaning chamber 17 are airtightly isolated;

[0111] S5. Remove the fixing screws connected to the first flange 21, remove the metal particle cleaning chamber 17 from the metal particle collecting chamber, and clean the metal particles accumulated in the metal particle cleaning chamber 17;

[0112] S6, reinstalling the cleaned metal particle cleaning chamber 17 to the bottom of the metal particle collecting chamber;

[0113] S7, opening the butterfly valve to restore the connection between the metal particle collecting chamber and the metal particle cleaning chamber 17. At this time, the metal particle capturing device 1 can be put into use again.

[0114] Compared with existing metal particle capture devices, the metal particle capture device 1, which is easy to disassemble and clean, can realize the metal particle capture function while reducing the difficulty of cleaning metal particles, so that workers do not need to exhaust and re-inflate the gas inside the GIS device, thereby improving work efficiency and avoiding metal particles from drifting from the particle trap to other areas with the airflow during exhaust, thereby improving the practicality of the metal particle capture device 1.

[0115] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A metal particle capture device that is easy to disassemble and clean, characterized in that: include: A metal particle trap grid plate, a metal particle collection chamber, a metal particle cleaning chamber, a wire winding, and a permanent magnet; One end of the metal particle collection chamber is fixedly connected to the GIS shell; The metal particle trap grid plate is arranged at the top opening of the metal particle collection chamber, and the metal particle collection chamber is connected with the interior of the GIS shell through the metal particle trap grid plate; The other end of the metal particle collecting chamber is detachably connected to the metal particle cleaning chamber; The metal particle collection cabin comprises a shell, a metal particle collection plate, a sealing separation plate, a bellows in the cabin and a butterfly valve; The housing comprises an upper shell, a lower shell, an upper bellows, a lower bellows and a metal magnetic conductive plate; The metal magnetic conductive plate is a cylindrical sleeve structure; The upper shell is connected to one end of the metal magnetic conductive plate through the upper bellows; The other end of the metal magnetic conductive plate is connected to the lower shell through the lower bellows; The sealing separation disk is arranged in the lower shell, and a first through hole is opened in the center of the sealing separation disk; The metal particle collecting tray is located inside the metal magnetic conductive plate and is funnel-shaped; The upper end of the metal particle collecting plate is sealed with the inner wall of the metal magnetic conductive plate, and the lower end is connected to the upper inner side of the sealing separation plate through the bellows in the cabin; The butterfly valve is arranged at the inner lower part of the sealing separation plate, and is used to achieve airtight isolation between the metal particle collection chamber and the metal particle cleaning chamber; The wire winding is arranged outside the metal magnetic conductive plate; The permanent magnet is coaxially fixed to the outside of the wire winding through a fixing frame, and an air gap is left between the permanent magnet and the wire winding.

2. The metal particle capturing device that is easy to disassemble and clean according to claim 1, characterized in that: The metal particle trap grid plate is located on the inner wall of the GIS shell, and the linear distance between the metal particle trap grid plate and the insulator is 5 to 30 cm.

3. The metal particle capturing device that is easy to disassemble and clean according to claim 1, characterized in that: The metal particle trap grid plate has multiple grids and multiple baffles alternately and evenly arranged; The baffle is an arc-shaped plate protruding toward one side of the metal particle collecting chamber.

4. The metal particle capturing device that is easy to disassemble and clean according to claim 1, characterized in that: The butterfly valve comprises a valve body, a valve plate, a sealing seat, a first sealing port, a fixing rod and an operating rod; The sealing seat and the first sealing port are symmetrically arranged on the outer surface of the valve body along the radial direction of the valve body; The valve plate is arranged in the valve body; The fixing rod and the operating rod are symmetrically connected to both sides of the valve plate along the radial direction of the valve plate; A second sealing opening coaxial with the first sealing opening is provided on the outer side of the lower shell; One end of the fixing rod away from the valve plate passes through the valve body and extends into the sealing seat; The fixing rod is rotatably connected to the valve body and the sealing seat respectively; One end of the operating rod away from the valve plate passes through the valve body, the first sealing opening, the lower shell and the second sealing opening in sequence, and extends outward; The operating rod is rotatably connected to the valve body, the first sealing port, the lower shell and the second sealing port respectively.

5. The metal particle capturing device that is easy to disassemble and clean according to claim 4, characterized in that: A first annular groove is formed on the inner wall of the valve body; A first sealing ring is provided in the first annular groove; The valve plate is a disc-shaped structure; The first sealing ring is a cylindrical sleeve structure, and the outer diameter of the first sealing ring is adapted to the inner diameter of the first annular groove, and the inner diameter of the first sealing ring is adapted to the outer diameter of the valve plate.

6. The metal particle capturing device that is easy to disassemble and clean according to claim 4, characterized in that: The sealing seat includes a sealing seat body and a first sealing cover disc; One end of the sealing seat body is fixedly connected to the outer surface of the valve body, and the other end is detachably connected to the first sealing cover plate; A second sealing ring is provided between the first sealing cover plate and the sealing seat body; A second through hole is provided in the center of the sealing seat body for the fixing rod to pass through; The inner diameter of the second through hole is adapted to the outer diameter of the fixing rod.

7. The metal particle capturing device that is easy to disassemble and clean according to claim 4, characterized in that: The first sealing port and the second sealing port have the same structure; The first sealing port and the second sealing port each include a sealing port body and a second sealing cover plate; A third through hole and a fourth through hole for the operating rod to pass through are respectively formed in the center of the sealing port body and the second sealing cover plate; The inner diameters of the third through hole and the fourth through hole are both adapted to the outer diameter of the operating rod; A second annular groove communicating with the third through hole is formed at one end of the sealing port body away from the valve body; A third sealing ring and a metal gasket are sequentially arranged in the second annular groove from the inside to the outside; The second sealing cover disc is detachably mounted on one end of the sealing port body away from the valve body, and is used to press and fix the third sealing ring and the metal gasket in the second annular groove to achieve sealing and limiting of the operating rod.

8. The metal particle capturing device that is easy to disassemble and clean according to claim 4, characterized in that: The fixed rod and the operating rod are both cylindrical structures; Rectangular limit blocks are provided at both ends of the operating rod and at one end of the fixing rod close to the valve plate; Plug holes matching the shape of the rectangular limit block are correspondingly provided on both sides of the valve plate; The fixing rod and the operating rod are both plugged into the valve plate through the rectangular limiting block.

9. The metal particle capturing device that is easy to disassemble and clean according to claim 1, characterized in that: The shell and the metal particle cleaning chamber are both hollow cylindrical structures; The inner diameter of the shell is the same as the inner diameter of the metal particle cleaning chamber; The outer diameter of the housing is the same as the outer diameter of the metal particle cleaning chamber; The top of the metal particle cleaning chamber is connected to the bottom of the lower shell through a first flange.

10. The metal particle capturing device that is easy to disassemble and clean according to claim 1, characterized in that: The wire winding is composed of at least one layer of wire spirally wound around the outer side of the metal magnetic conductive plate; The outer surface of the wire is coated with insulating paint, and the two ends of the wire are respectively connected to the positive electrode and the negative electrode of the AC power supply.

11. The metal particle capturing device that is easy to disassemble and clean according to claim 1, characterized in that: The fixing frame includes a fixing disc and a strip-shaped fixing plate; The fixed disk is a cylindrical sleeve structure; The fixed disk is coaxially sleeved outside the wire winding, and the top and bottom of the fixed disk are fixedly connected to the upper shell and the lower shell respectively through the strip-shaped fixing plate; A plurality of permanent magnets are uniformly fixed on the inner surface of the fixed disk along the circumferential direction; The plurality of permanent magnets are located on the same horizontal plane, and the permanent magnets are directly facing the wire winding; The magnetic field direction of the permanent magnet is perpendicular to the metal magnetic conductive plate and points inward.

12. The metal particle capturing device that is easy to disassemble and clean according to claim 1, characterized in that: The air gap is 0.2~5mm.

13. A cleaning method for a metal particle capturing device that is easy to disassemble and clean according to any one of claims 1 to 12, characterized in that: The following steps are involved: S1. Applying an alternating current to the wire winding causes the wire winding to generate an Ampere force with periodic direction changes in the alternating magnetic field, thereby driving the metal magnetic conductive plate and the metal particle collection disk connected to the metal magnetic conductive plate to vibrate in the vertical direction, forcing the metal particles attached to the metal particle collection disk to break away and fall into the metal particle cleaning chamber through the bottom opening of the metal particle collection disk under the action of gravity; S2. Adjusting the frequency and amplitude of the alternating current to control the vibration amplitude and frequency of the metal particle collecting plate, and continuing the vibration for a preset time; S3, turning off the AC power supply to stop the vibration of the metal particle collecting plate; S4, closing the butterfly valve to form an airtight isolation between the metal particle collection chamber and the metal particle cleaning chamber; S5, removing the metal particle cleaning chamber from the metal particle collecting chamber, and cleaning the metal particles accumulated in the metal particle cleaning chamber; S6, reinstalling the cleaned metal particle cleaning chamber to the bottom of the metal particle collecting chamber; S7, opening the butterfly valve to restore the communication between the metal particle collecting chamber and the metal particle cleaning chamber.

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