Intelligent magnetic shielding barrel

Abstract

The application relates to an intelligent magnetic shielding barrel in the field of magnetic field shielding devices. A demagnetizing coil which is built in the magnetic shielding barrel and wound on a multilayer shielding cylinder is used to synchronously demagnetize the multilayer shielding cylinder. A hinge with an electric bolt, a bolt button and a demagnetizing button are used to realize quick sealing, locking and one-key demagnetizing of the magnetic shielding barrel, so that the operation is convenient, personnel misoperation is reduced, and the current state of the magnetic shielding barrel is reminded to the operator through a state indicating board, so that the misoperation possibility is further reduced. In addition, a current sensor is installed to realize real-time monitoring of the current flowing through the demagnetizing coil, so that short circuit or leakage and other faults can be found in time, and the operation safety is further improved. Furthermore, a magnetometer arranged in the shielding pipe and capable of extending out is used to detect the residual magnetic field strength after demagnetization, and multiple demagnetization operations with gradually increased power are carried out according to the requirement, so that automatic demagnetization operation is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to a magnetic shielding barrel, in particular to an intelligent magnetic shielding barrel applied to the field of magnetic field shielding equipment. BACKGROUND

[0002] The magnetic shielding barrel is a precisely designed container mainly composed of high-permeability materials. Its internal structure is specially optimized to effectively shield external magnetic fields from interfering with the internal space, while reducing the leakage of internal magnetic fields to ensure the purity of the magnetic field environment inside the barrel. This device is widely used in fields such as scientific research experiments, precision instrument calibration, and nuclear magnetic resonance imaging, which require strict control of the magnetic field environment. Before using the magnetic shielding barrel, a crucial step is to perform demagnetization to completely eliminate any residual magnetic fields inside the barrel. The demagnetization process relies on a specialized demagnetizer. This device generates an inverse magnetic field opposite to the residual magnetic field by loading current into the demagnetizing coil placed outside the magnetic shielding cylinder, effectively canceling and eliminating the magnetic field inside the barrel.

[0003] The existing demagnetization operation process is relatively complex. First, the electromagnetic coil of the demagnetizer needs to be manually arranged outside the magnetic shielding cylinder. Then, the communication end of the demagnetizer is connected to an external computer to accurately control the size and direction of the current. Subsequently, the operator needs to install and fix the outer cover of the magnetic shielding cylinder one by one to ensure sealing and demagnetization effect. In this process, due to the multiple operation steps, and when installing the end cover, the operator often has difficulty in intuitively determining whether the demagnetization operation has been correctly started, which increases the risk of misoperation.

[0004] The existing patent with publication number CN215188129U discloses a magnetic shielding cylinder for a rule pipe. The inner surface of the shell cylinder is attached with a demagnetizing coil, the inner surface of the demagnetizing coil is installed with a silicon steel layer, the inner surface of the silicon steel layer is attached with an outer permalloy layer, the inner surface of the outer permalloy layer is installed with an aluminum layer, the inner surface of the aluminum layer is installed with an inner permalloy layer, the inner surface of the inner permalloy layer is installed with an insulating layer, and the insulating layer has a one-end-closed cylindrical shell structure. This magnetic shielding cylinder for a rule pipe, by adopting a square appearance design, is different from the traditional cylindrical cylinder appearance that needs to be additionally provided with a support device, making the placement of the shielding magnetic cylinder more convenient, saving space occupation, by assuming a demagnetizing coil outside the permalloy layer, using an alternating electric field to perform the last demagnetization work on the entire magnetic shielding cylinder, increasing the working capacity of the magnetic shielding cylinder, to reduce the thickness of the permalloy layer and reduce the volume of the magnetic shielding cylinder.

[0005] The above-mentioned patent discloses a demagnetizing coil attached to the inner surface of the shell cylinder, which does not require manual arrangement of the demagnetizing coil. However, the above-mentioned patent does not solve the problem of reducing the number of operation steps for sealing the magnetic shielding cylinder and the safety hazards caused by personnel misoperation. SUMMARY

[0006] For the above prior art, the technical problem to be solved by the present application is that the magnetic shielding barrel needs complex operation for demagnetization before each test and is prone to misoperation, which exists safety hazards.

[0007] To solve the above problems, the present application provides an intelligent magnetic shielding barrel, which comprises an outer barrel, a plurality of concentric shielding cylinders arranged in the outer barrel, a storage cylinder arranged in the innermost shielding cylinder, and an insulating cylinder fixedly connected between adjacent shielding cylinders. The outermost shielding cylinder and the outer barrel inner wall, as well as the innermost shielding cylinder and the storage cylinder, are fixedly connected through the insulating cylinder. A pair of barrel lids are hingedly connected to the two sides of the outer barrel through a pair of hinges. A plurality of shielding covers are arranged on the inner side of the barrel lid and matched with the shielding cylinders. Each shielding cover abuts against the corresponding shielding cylinder when the barrel lid is closed. A plurality of fixed pipes are fixedly connected with the shielding covers and extend to the outside of the barrel lid and are fixedly connected with the barrel lid.

[0008] A demagnetizer is installed in the outer barrel, and the plurality of shielding cylinders and the plurality of insulating cylinders form a cylindrical assembly. The demagnetizer comprises a demagnetizing coil wound on the inner and outer sides of the cylindrical assembly in one direction. The front end and the tail end of the demagnetizing coil extend to the outside of the barrel lid and are fixedly connected with the demagnetizing drive power source fixed on the barrel lid. An electric bolt is installed on each hinge to lock the hinge. A travel switch is installed on each hinge to detect whether the hinge is closed. The pair of electric bolts, the pair of travel switches, and the demagnetizing drive power source are electrically connected with the same controller. The controller is also connected with a state indicator plate fixed on the outer wall of the outer barrel. The state indicator plate comprises an opening and closing indicator light and a demagnetization indicator light.

[0009] The hinge comprises a fixed block fixedly connected with the outer barrel and a rotating block fixedly connected with the barrel lid. A support column is fixedly connected with the fixed block and penetrates the rotating block. The electric bolt comprises a bolt column and an electric push rod fixedly connected with the bolt column. An inner hole is formed in the support column and matched with the bolt column. A first outer hole is formed in the rotating block and matched with the inner hole.

[0010] A handle is fixedly connected to the outside of each barrel lid. A bolt button is fixedly connected to each handle. A demagnetization button is fixedly connected to the handle located at the front end of the magnetic shielding barrel. The pair of bolt buttons and the demagnetization button are electrically connected with the controller.

[0011] In the above intelligent magnetic shielding barrel, the demagnetizing coil built-in the magnetic shielding barrel and the electric bolt arranged on the hinge of the barrel lid improve the convenience of demagnetization operation and the safety of operation.

[0012] As a further improvement of the application, the pair of electric push rods comprises a first electric push rod and a second electric push rod, the pair of latch buttons comprises a first latch button and a second latch button, the travel switch is fixedly connected with the fixed block and abuts against the inner end of the rotating block, and the pair of travel switches comprises a first travel switch and a second travel switch; the on-off indicator light and the demagnetization indicator light are both multi-color LED lights.

[0013] As a further improvement of the application, the controller is provided with a control system, the control system comprises a control module, the input end of the control module is connected with a cover monitoring module, a demagnetization monitoring module, a demagnetization starting module and a latch starting module respectively, and the output end of the control module is connected with a demagnetization module, a latch execution module and a state indicating module respectively;

[0014] The input end of the cover monitoring module is connected with the first travel switch, the second travel switch, the first electric push rod and the second electric push rod respectively, the input end of the demagnetization monitoring module and the output end of the demagnetization starting module are connected with a demagnetization driving power supply, the output end of the latch execution module is connected with the first electric push rod and the second electric push rod respectively, the output end of the state indicating module is connected with the on-off indicator light and the demagnetization indicator light respectively, the input end of the demagnetization starting module is connected with a demagnetization button, and the input end of the latch starting module is connected with the first latch button and the second latch button respectively.

[0015] As a further improvement of the application, the current sensor is connected in series with one end of the demagnetization coil close to the demagnetization driving power supply, the input end of the control module is further connected with a current monitoring module, the input end of the current monitoring module is connected with the current sensor, the current monitoring module further comprises a current characteristic comparison unit and a current characteristic storage unit, the current characteristic storage unit stores a fault current characteristic when a short circuit or a leakage fault occurs, and the current identification characteristic extracts a characteristic of a real-time current and compares the characteristic with the stored fault current characteristic.

[0016] As a further improvement of the application, the demagnetization coil comprises a plurality of inner horizontal lines arranged in parallel with the storage cylinder in the innermost layer of the insulating cylinder, a plurality of outer horizontal lines arranged in parallel with the storage cylinder in the outermost layer of the insulating cylinder, and a plurality of connecting lines connecting the inner horizontal lines and the outer horizontal lines.

[0017] As a further improvement of the application, the fixed block is fixedly connected with a limiting block, the electric push rod is fixedly connected with the limiting block, and the rotating block is provided with a second outer hole arranged opposite to the first outer hole.

[0018] As a further improvement of the present application, a magnetic field detection mechanism is arranged in the fixed tube at the rear end of the magnetic shielding barrel, the magnetic field detection mechanism comprises a shielding tube embedded in the fixed tube, a sliding cylinder is slidably connected to the inner side of the one end of the shielding tube, a magnetometer is fixedly connected in the sliding cylinder, the magnetometer is connected with the controller, the non-moving end of the electric telescopic cylinder is fixedly connected with the inner wall of the shielding tube.

[0019] As a further improvement of the present application, the sliding cylinder comprises a rectangular box for accommodating the magnetometer and a pair of discs fixed on both sides of the rectangular box, the pair of discs are slidably abutted with the inner wall of the shielding tube, and the pair of discs and the shielding tube are both made of permalloy material.

[0020] As a further improvement of the present application, the output end of the control module is further connected with a repeated demagnetization module, and the output end of the repeated demagnetization module is connected with the electric telescopic cylinder and the magnetometer respectively.

[0021] As a further improvement of the present application, the sliding cylinder comprises a rectangular box for accommodating the magnetometer and a pair of discs fixed on both sides of the rectangular box, the pair of discs are slidably abutted with the inner wall of the shielding tube, and the pair of discs and the shielding tube are both made of permalloy material. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the perspective structure of the right side view of the present application;

[0023] Figure 2 is a schematic diagram of the perspective structure of the left side view of the present application;

[0024] Figure 3 is a schematic diagram of the transverse cross-sectional structure of the present application;

[0025] Figure 4 is a schematic diagram of the module of the control system in the first embodiment of the present application;

[0026] Figure 5 is a schematic diagram of the installation of the demagnetizing coil and the plurality of shielding tubes in the present application;

[0027] Figure 6 is a schematic diagram of the perspective structure of the demagnetizing coil in the present application;

[0028] Figure 7 is a schematic diagram of the internal structure of the barrel cover in the present application;

[0029] Figure 8 For Figure 3 enlarged structural schematic view at A in the middle;

[0030] Figure 9 is an explosion assembly schematic diagram of the hinge in the application;

[0031] Figure 10 is a perspective structural schematic view of the state indicating board in the application;

[0032] Figure 11 For Figure 3 enlarged structural schematic view at B in the middle;

[0033] Figure 12 is an explosion assembly schematic diagram of the magnetic field detection mechanism;

[0034] Figure 13 is a schematic view of the sliding cylinder extending out of the shielding tube in the application.

[0035] Explanation of figure marks:

[0036] 1, outer barrel; 2, barrel cover; 3, shielding cylinder; 4, insulating cylinder; 5, shielding cover; 501, notch groove; 6, fixed tube; 7, storage cylinder; 8, demagnetization coil; 801, inner horizontal line; 802, outer horizontal line; 803, connecting line; 9, demagnetization drive power supply; 10, current sensor; 11, hinge; 1101, fixed block; 1102, rotating block; 1103, support column; 1104, inner hole; 1105, first outer hole; 1106, second outer hole; 12, electric bolt; 1201, bolt column; 1202, electric push rod; 13, travel switch; 14, limit block; 15, controller; 16, state indicating board; 1601, on-off indicating lamp; 1602, demagnetization indicating lamp; 17, handle; 18, bolt button; 19, demagnetization button; 20, shielding tube; 21, sliding cylinder; 2101, rectangular box; 2102, disc; 22, magnetometer; 23, electric telescopic cylinder. DETAILED DESCRIPTION

[0037] The two embodiments of the application will be described in detail below with reference to the accompanying drawings.

[0038] First embodiment:

[0039] Figures 1-10 An intelligent magnetic shielding barrel is shown, which comprises an outer barrel 1, a plurality of concentrically arranged shielding cylinders 3 are arranged in the outer barrel 1, a storage cylinder 7 is arranged in the innermost shielding cylinder 3, an insulating cylinder 4 is fixedly connected between adjacent shielding cylinders 3, and the outermost shielding cylinder 3 and the inner wall of the outer barrel 1 are fixedly connected through the insulating cylinder 4, and the innermost shielding cylinder 3 and the storage cylinder 7 are fixedly connected through the insulating cylinder 4;

[0040] Please refer to Figure 3 and Figure 7 The outer barrel 1 is hinged on both sides by a pair of hinges 11 to a pair of barrel covers 2, and a plurality of shielding covers 5 are arranged on the inner side of the barrel covers 2 and matched with the shielding cylinders 3. Each shielding cover 5 is in abutment with the corresponding shielding cylinder 3 when the barrel cover 2 is closed. A plurality of fixed tubes 6 are penetrated through the shielding covers 5 and fixedly connected with the shielding covers 6, and the fixed tubes 6 extend to the outer side of the barrel cover 2 and are fixedly connected with the barrel cover 2.

[0041] Please refer to Figure 3 and Figure 5 A degaussing device is installed in the outer barrel 1, and the plurality of shielding cylinders 3 and the plurality of insulating cylinders 4 are combined to form a cylindrical assembly. The degaussing device includes degaussing coils 8 wound on both the inner and outer sides of the cylindrical assembly in one direction. The front end and the tail end of the degaussing coils 8 extend to the outer side of the barrel cover 2 and are fixedly connected with a degaussing driving power supply 9 fixed on the barrel cover 2. The degaussing driving power supply 9 loads current on the degaussing coils 8 to make the degaussing coils 8 generate a counter magnetic field to eliminate the residual magnetic field remaining in the magnetic shielding barrel.

[0042] Please refer to Figure 3 and Figures 8-10 A pair of electric latches 12 are installed on the hinges 11 to lock the hinges 11. A pair of travel switches 13 are installed on the hinges 11 to detect whether the hinges 11 are closed. A pair of electric latches 12, a pair of travel switches 13 and the degaussing driving power supply 9 are electrically connected with the same controller 15. The controller 15 is further connected with a state indicating plate 16 fixed on the outer wall of the outer barrel 1. The state indicating plate 16 includes an opening and closing indicating lamp 1601 and a degaussing indicating lamp 1602.

[0043] Please refer to Figure 3 A pair of handles 17 are fixedly connected with the outer sides of the barrel covers 2. A pair of latch buttons 18 are fixedly connected with the handles 17. A degaussing button 19 is fixedly connected with the handle 17 located at the front end of the magnetic shielding barrel. A pair of latch buttons 18 and the degaussing button 19 are electrically connected with the controller 15.

[0044] Specifically, when degaussing is needed, the latch button 18 is pressed to start the electric latch 12 on the hinge 11 to lock the hinge 11, and then the degaussing button 19 is pressed to start the degaussing driving power supply 9 to load current on the degaussing coils 8 to eliminate the residual magnetic field, realizing one-key degaussing. The barrel cover 2 is locked during degaussing to ensure the safety of degaussing and avoid the operator from opening the barrel cover 2 by mistake during the degaussing process. During the degaussing process, the opening and closing indicating lamp 1601 and the degaussing indicating lamp 1602 on the state indicating plate 16 indicate the opening state of the barrel cover 2 and the degaussing state, further improving the safety of operation.

[0045] Compared with the traditional magnetic shielding barrel, the application realizes one-key demagnetization through the hinged joint 11 with the electric bolt 12 and the demagnetization button 19, and the operation is convenient. Meanwhile, the electric bolt 12 is used to lock the hinged joint 11 fixedly connected with the barrel cover 2 during demagnetization, so as to reduce the probability of accidental injury to the personnel caused by the barrel cover 2 being opened by mistake during demagnetization. In addition, the state indicating plate including the opening and closing indicating lamp 1601 and the demagnetization indicating lamp 1602 is arranged, so as to remind the operator of the current state of the magnetic shielding barrel, further reduce the possibility of misoperation, and improve the operation safety of the magnetic shielding barrel.

[0046] Please refer to Figure 5 and Figure 6 The demagnetization coil 8 includes a plurality of inner horizontal lines 801 arranged in parallel with the storage cylinder 7 in the innermost layer of the insulating cylinder 4, a plurality of outer horizontal lines 802 arranged in parallel with the storage cylinder 7 in the outermost layer of the insulating cylinder 4, and a plurality of connecting lines 803 connecting the inner horizontal lines 801 and the outer horizontal lines 802.

[0047] Specifically, according to the right-hand Ampere rule, when the inner horizontal lines 801 and the outer horizontal lines 802 are loaded with current, they generate a magnetic field perpendicular to themselves, which performs inverse magnetic field demagnetization on the plurality of horizontally arranged shielding cylinders 3 and the corresponding shielding covers 5, and has a good demagnetization effect. In addition, it should be noted that the demagnetization driving power supply 9 loads a set high current first and then gradually reduces to zero when loading current. The above current loading method is a prior art, which achieves a good demagnetization effect. It should be noted that the shielding cover 5 is provided with a notch groove 501 for the connecting line to pass through.

[0048] Please refer to Figure 8 and Figure 9 The hinged joint 11 includes a fixed block 1101 fixedly connected with the outer barrel 1 and a rotating block 1102 fixedly connected with the barrel cover 2. The fixed block 1101 is fixedly connected with a support column 1103 penetrating through the rotating block 1102. The electric bolt 12 includes a bolt column 1201 and an electric push rod 1202 fixedly connected with the bolt column 1201. The support column 1103 is provided with an inner hole 1104 matched with the bolt column 1201. The rotating block 1102 is provided with a first outer hole 1105 matched with the inner hole 1104.

[0049] Specifically, when the electric push rod 1202 drives the bolt column 1201 to penetrate through the first outer hole 1105 and insert into the inner hole 1104, the fixed block 1101 and the rotating block 1102 are locked, and the barrel cover 2 cannot be opened. It should be noted that in order to distinguish the electric push rods 1202 of the pair of electric bolts 12, they are defined as a first electric push rod and a second electric push rod.

[0050] Please refer to Figure 9 The fixed block 1101 is fixedly connected with a limiting block 14, and the electric push rod 1202 is fixedly connected with the limiting block 14. The rotating block 1102 is provided with a second outer hole 1106 opposite to the first outer hole 1105. The pair of electric push rods 1202 includes a first electric push rod and a second electric push rod. The pair of latch buttons 18 includes a first latch button and a second latch button.

[0051] Specifically, when the bucket cover 2 is opened and turned up to the maximum position, the rotating block 1102 abuts against the limiting block 14. At this time, the second outer hole 1106 moves to the opposite side of the inner hole 1104. At this time, the latch post 1201 passes through the second outer hole 1106 and is inserted into the inner hole 1104, realizing the fixing of the bucket cover 2 after being opened and improving the safety of operation.

[0052] It should be noted that the travel switch 13 is fixedly connected with the fixed block 1101 and abuts against the inner end of the rotating block 1102. The pair of travel switches 13 includes a first travel switch and a second travel switch.

[0053] Specifically, the travel switch 13 is a press-type travel switch. When the rotating block 1102 extrudes the travel switch 13 to the maximum stroke, the fixed block 1101 and the rotating block 1102 are closed, that is, the bucket cover 2 is closed. It should be noted that in order to distinguish the pair of travel switches 13 arranged on the pair of hinges 11, the two are defined as the first travel switch and the second travel switch.

[0054] Please refer to Figure 10 The on-off indicating lamp 1601 and the demagnetization indicating lamp 1602 are both multi-color LED lamps.

[0055] Specifically, different colors are defined to represent different states, further improving the indication effect. In order to facilitate understanding, for example, when the on-off indicating lamp 1601 is green, it indicates that the bucket cover 2 is in a closed and locked state, and at this time, the demagnetization indicating lamp 1602 is green, indicating that no demagnetization operation is currently being performed. The bucket cover 2 can be opened by pressing the on-off button and rotating the bucket cover 2 while holding the handle 17. When the on-off indicating lamp 1601 is green, it indicates that the bucket cover 2 is in a closed and locked state, and at this time, the demagnetization indicating lamp 1602 is red, indicating that the demagnetization operation is currently being performed. Pressing the latch button 18 cannot start the electric latch 12, and the bucket cover 2 cannot be opened. Further improve the operation safety; It should be noted that when the first electric push rod and the second electric push rod are both in the extended state and the first travel switch and the second travel switch are both compressed to the maximum stroke, it can be confirmed that the entire magnetic shielding bucket is in a closed state, and the demagnetization operation can be performed.

[0056] Please refer to Figure 4The controller 15 is provided with a control system including a control module, an input end of the control module is connected with a cover monitoring module, a demagnetization monitoring module, a demagnetization starting module and a bolt starting module respectively, and an output end of the control module is connected with a demagnetization module, a bolt execution module and a state indicating module respectively;

[0057] An input end of the cover monitoring module is connected with a first travel switch, a second travel switch, a first electric push rod and a second electric push rod respectively, an input end of the demagnetization monitoring module and an output end of the demagnetization starting module are connected with the demagnetization driving power supply 9, an output end of the bolt execution module is connected with the first electric push rod and the second electric push rod respectively, and an output end of the state indicating module is connected with an opening and closing indicating lamp 1601 and a demagnetization indicating lamp 1602 respectively;

[0058] An input end of the demagnetization starting module is connected with a demagnetization button 19, and an input end of the bolt starting module is connected with a first bolt button and a second bolt button respectively.

[0059] Specifically, the opening and closing state of the cover 2 is monitored by the cover monitoring module of the control system, the state of the demagnetization driving power supply 9 is monitored by the demagnetization monitoring module, and then it is judged whether the demagnetization operation is being performed.

[0060] Please refer to Figure 3 and Figure 4 The demagnetization coil 8 is connected in series with a current sensor 10 at one end close to the demagnetization driving power supply 9, and an input end of the control module is further connected with a current monitoring module, and an input end of the current monitoring module is connected with the current sensor 10.

[0061] Specifically, during the demagnetization process, the current flowing through the demagnetization coil 8 is monitored by the current sensor 10, and the leakage or open circuit condition of the electromagnetic coil 8 is found in time, so as to facilitate timely warning, make the demagnetization indicating lamp flash alarm, and cut off the power supply of the demagnetization driving power supply 9 to the demagnetization coil, further improve the safety of the operation, and it needs to be particularly pointed out that the current monitoring module further includes a current feature comparison unit and a current feature storage unit, the current feature storage unit stores the fault current feature when a short circuit or leakage fault occurs, and the current identification feature extracts the real-time current feature and compares it with the stored fault current feature.

[0062] In the embodiment, the outer barrel 1 and the cover 2 are both made of aluminum material, the plurality of shielding cylinders 3 are all made of permalloy material, and the pair of fixed tubes 6 and the plurality of insulating cylinders 4 are both made of insulating material.

[0063] The second embodiment:

[0064] Figures 11-13The application discloses a kind of intelligent magnetic shielding barrels, based on the first embodiment, magnetic field detection mechanism is arranged in fixed tube 6 at the rear end of magnetic shielding barrel, magnetic field detection mechanism includes fixedly nested in fixed tube 6 shielding tube 20, shielding tube 20 is slidably connected with sliding cylinder 21 towards the inside of one end of storage cylinder 7, magnetometer 22 is fixedly connected in sliding cylinder 21, magnetometer 22 is connected with controller 15, the movable end of electric telescopic cylinder 23 is fixedly connected with sliding cylinder 21 away from one side of storage cylinder 7, the non-actuating end of electric telescopic cylinder 23 is fixedly connected with the inner wall of shielding tube 20.

[0065] Specifically, please refer to Figure 13 After single demagnetization operation ends, electric telescopic cylinder 23 is started, electric telescopic cylinder 23 pushes sliding cylinder 21 to extend into storage cylinder 7, then magnetometer 22 is started to detect the magnetic field in storage cylinder 7 after demagnetization, when the residual magnetic field intensity detected is higher than the set magnetic field intensity threshold value, demagnetization operation is started again, and the current value loaded to demagnetization coil 8 is increased, the increase value is set value, then demagnetization operation is carried out again, and the above demagnetization and detection operation is repeated until the residual magnetic field intensity detected is not higher than the set magnetic field intensity threshold value, demagnetization operation is completed, and electric telescopic cylinder 23 is started again, so that sliding cylinder 21 returns to shielding tube 20.

[0066] In the embodiment, sliding cylinder 21 includes rectangular box 2101 for accommodating magnetometer 22 and a pair of discs 2102 fixed on both sides of rectangular box 2101, the pair of discs 2102 are slidably abutted with the inner wall of shielding tube 20, and the pair of discs 2102 and shielding tube 20 are both made of permalloy material.

[0067] Specifically, in non-detection state, shielding tube 20 and the pair of discs 2102 made of permalloy material magnetically shield and protect magnetometer 22.

[0068] It should be noted that the output end of the control module is also connected with a repeated demagnetization module, and the output end of the repeated demagnetization module is connected with electric telescopic cylinder 23 and magnetometer 22 respectively.

[0069] Specifically, in demagnetization operation, the demagnetization effect is automatically verified, and multiple demagnetization operations are carried out as needed, to realize automatic demagnetization operation and improve demagnetization efficiency and demagnetization effect.

[0070] In combination with current actual demand, the above-mentioned embodiments adopted by the application do not limit the protection scope, various changes made within the knowledge range of those skilled in the art without departing from the concept of the application still fall within the protection scope of the application.

Claims

1. An intelligent magnetic shielding barrel, characterized in that: The invention comprises an outer barrel (1), wherein a plurality of concentrically arranged shielding cylinders (3) are provided in the outer barrel (1), a storage cylinder (7) is provided in the innermost shielding cylinder (3), an insulating cylinder (4) is fixedly connected between adjacent shielding cylinders (3), and the outermost shielding cylinder (3) and the inner wall of the outer barrel (1) and the innermost shielding cylinder (3) and the storage cylinder (7) are fixedly connected via the insulating cylinder (4); a pair of barrel covers (2) are hingedly connected on both sides of the outer barrel (1) via a pair of hinges (11), a plurality of shielding covers (5) cooperating with the shielding cylinders (3) are provided on the inner side of the barrel cover (2), and each shielding cover (5) abuts against the corresponding shielding cylinder (3) when the barrel cover (2) is closed; a fixing tube (6) fixedly connected to the plurality of shielding covers (5) passes through the fixing tube (6) extending to the outer side of the barrel cover (2) and fixedly connected to the barrel cover (2); A demagnetizer is installed in the outer barrel (1), and a plurality of shielding barrels (3) and a plurality of insulating barrels (4) are combined to form a cylindrical assembly. The demagnetizer includes a demagnetizing coil (8) unidirectionally wound on both sides of the inner and outer sides of the cylindrical assembly. The front end and the rear end of the demagnetizing coil (8) extend to the outside of the barrel cover (2) and are fixedly connected to a demagnetizing driving power supply (9) fixed on the barrel cover (2); a pair of hinges (11) are each installed with an electric bolt (12) for locking the hinges (11); a pair of hinges (11) are each installed with a travel switch (13) for detecting whether the hinges (11) are closed; the pair of electric bolts (12), the pair of travel switches (13) and the demagnetizing driving power supply (9) are all electrically connected to the same controller (15); the controller (15) is also connected to a status indicator board (16) fixed on the outer wall of the outer barrel (1); the status indicator board (16) includes an opening and closing indicator light (1601) and a demagnetization indicator light (1602); The hinge (11) comprises a fixed block (1101) fixedly connected to the outer barrel (1) and a rotating block (1102) fixedly connected to the barrel cover (2); a support column (1103) penetrating the rotating block (1102) is fixedly connected to the upper portion of the fixed block (1101); the electric latch (12) comprises a latch column (1201) and an electric push rod (1202) fixedly connected to the latch column (1201); an inner hole (1104) cooperating with the latch column (1201) is formed on the support column (1103); and a first outer hole (1105) cooperating with the inner hole (1104) is formed on the rotating block (1102); A pair of handles (17) are fixedly connected to the outside of the barrel covers (2), and a latch button (18) is fixedly connected to the pair of handles (17). A demagnetization button (19) is also fixedly connected to the handle (17) at the front end of the magnetic shielding barrel, and the pair of latch buttons (18) and the demagnetization button (19) are both electrically connected to the controller (15).

2. The intelligent magnetic shielding barrel according to claim 1, characterized in that: A pair of electric push rods (1202) includes a first electric push rod and a second electric push rod, a pair of latch buttons (18) includes a first latch button and a second latch button, the travel switch (13) is fixedly connected to the fixed block (1101) and abuts against the inner end of the rotating block (1102), and the pair of travel switches (13) includes a first travel switch and a second travel switch; the opening and closing indicator light (1601) and the demagnetization indicator light (1602) are both multi-color LED lights.

3. The intelligent magnetic shielding barrel according to claim 2, characterized in that: The controller (15) is equipped with a control system, which includes a control module, the input end of the control module is respectively connected to the barrel cover monitoring module, the demagnetization monitoring module, the demagnetization starting module and the latch starting module, and the output end of the control module is respectively connected to the demagnetization module, the latch execution module and the status indication module; The input end of the barrel cover monitoring module is respectively connected to the first travel switch, the second travel switch, the first electric push rod and the second electric push rod; the input end of the demagnetization monitoring module and the output end of the demagnetization starting module are both connected to the demagnetization driving power supply (9); the output end of the latch execution module is respectively connected to the first electric push rod and the second electric push rod; the output end of the status indication module is respectively connected to the opening and closing indicator light (1601) and the demagnetization indicator light (1602); the input end of the demagnetization starting module is connected to the demagnetization button (19), and the input end of the latch starting module is respectively connected to the first latch button and the second latch button.

4. The intelligent magnetic shielding barrel according to claim 3, characterized in that: A current sensor (10) is connected in series to one end of the degaussing coil (8) close to the degaussing driving power supply (9), and a current monitoring module is also connected to the input end of the control module. The input end of the current monitoring module is connected to the current sensor (10). The current monitoring module also includes a current feature comparison unit and a current feature storage unit. The current feature storage unit stores fault current features when a short circuit or leakage fault occurs. The current identification feature extracts features from the real-time current and compares them with the stored fault current features.

5. The intelligent magnetic shielding barrel according to claim 1, characterized in that: The degaussing coil (8) comprises a plurality of inner horizontal lines (801) located within the innermost insulating cylinder (4) and arranged parallel to the storage cylinder (7), a plurality of outer horizontal lines (802) located within the outermost insulating cylinder (4) and arranged parallel to the storage cylinder (7), and a plurality of connecting lines (803) connecting the inner horizontal lines (801) and the outer horizontal lines (802).

6. The intelligent magnetic shielding barrel according to claim 1, characterized in that: The fixed block (1101) is fixedly connected to the limit block (14), the electric push rod (1202) is fixedly connected to the limit block (14), and the rotating block (1102) is provided with a second outer hole (1106) arranged opposite to the first outer hole (1105).

7. The intelligent magnetic shielding barrel according to claim 4, characterized in that: A magnetic field detection mechanism is provided in a fixed tube (6) located at the rear end of the magnetic shielding barrel. The magnetic field detection mechanism includes a shielding tube (20) fixedly nested in the fixed tube (6). The shielding tube (20) is slidably connected to a sliding tube (21) on the inner side of one end thereof facing the storage tube (7). A magnetometer (22) is fixedly connected in the sliding tube (21). The magnetometer (22) is connected to a controller (15). The sliding tube (21) is fixedly connected to the movable end of an electric telescopic cylinder (23) on the side away from the storage tube (7). The inactive end of the electric telescopic cylinder (23) is fixedly connected to the inner wall of the shielding tube (20).

8. The intelligent magnetic shielding barrel according to claim 7, characterized in that: The sliding cylinder (21) comprises a rectangular box (2101) for accommodating a magnetometer (22) and a pair of discs (2102) fixed on both sides of the rectangular box (2101). The pair of discs (2102) are in sliding contact with the inner wall of the shielding tube (20). The pair of discs (2102) and the shielding tube (20) are both made of Permalloy material.

9. The intelligent magnetic shielding barrel according to claim 8, characterized in that: The output end of the control module is also connected to a repeated demagnetization module, and the output end of the repeated demagnetization module is respectively connected to the electric telescopic cylinder (23) and the magnetometer (22).

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