Intelligent magnetic shielding barrel

Abstract

The invention relates to an intelligent magnetic shielding barrel in the field of magnetic field shielding equipment, which is characterized in that a plurality of layers of shielding barrels are demagnetized synchronously through a demagnetizing coil which is arranged in the magnetic shielding barrel and is wound on the plurality of layers of shielding barrels, and the plurality of layers of shielding barrels are demagnetized synchronously through a hinge with an electric bolt, a bolt button and a demagnetizing button. Rapid sealing and locking and one-key demagnetization of the magnetic shielding barrel are achieved, operation is convenient, misoperation of personnel is reduced, an operator is reminded of the current state of the magnetic shielding barrel through a state indicating plate, and the misoperation possibility is further reduced; in addition, the current sensor is used for monitoring the current flowing through the degaussing coil in real time, faults such as short circuit or electric leakage can be found in time, and the operation safety is further improved; besides, through the magnetometer which is arranged in the shielding tube and can extend out, the residual magnetic field intensity after demagnetization is detected, and the demagnetization operation of increasing the power step by step is carried out for multiple times according to needs, so that the automatic demagnetization operation is realized.

Description

Technical Field

[0001] The invention relates to a magnetic shielding barrel, in particular to an intelligent magnetic shielding barrel applied to the field of magnetic field shielding equipment. Background Art

[0002] A magnetic shielding barrel is a precisely designed container, mainly made of highly magnetically permeable materials. Its internal structure has been specially optimized to effectively shield the interference of external magnetic fields on the internal space, while reducing the leakage of internal magnetic fields to ensure the purity of the magnetic field in the barrel. This equipment is widely used in scientific research experiments, precision instrument calibration, nuclear magnetic resonance imaging and other fields that require strict control of the magnetic field environment. Before using a magnetic shielding barrel, a crucial step is to perform demagnetization to completely eliminate any magnetic field that may remain in the barrel. The demagnetization process relies on a special demagnetizer, which generates a reverse magnetic field in the opposite direction of the residual magnetic field by loading current to the demagnetization coil set on the outside of the magnetic shielding barrel, thereby effectively offsetting and clearing the magnetic field in the barrel.

[0003] The existing demagnetization operation process is relatively cumbersome. First, the electromagnetic coil of the demagnetizer needs to be manually arranged on the outside of the magnetic shielding cylinder, and then the communication end of the demagnetizer is connected to an external computer to accurately control the magnitude 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 the sealing and demagnetization effect. In this process, due to the large number of operating steps and the installation of the end cover, it is often difficult for the operator to intuitively judge whether the demagnetization operation has been started correctly, which increases the risk of misoperation.

[0004] The existing patent with publication number CN215188129U discloses a magnetic shielding tube for regulation, wherein the inner surface of the outer shell is bonded with a degaussing coil, the inner surface of the degaussing coil is installed with a silicon steel layer, the inner surface of the silicon steel layer is bonded with an outer Permalloy metal layer, the inner surface of the outer Permalloy metal layer is installed with an aluminum layer, the inner surface of the aluminum layer is installed with an inner Permalloy metal layer, the inner surface of the inner Permalloy metal layer is installed with an insulating layer, and the insulating layer is a cylindrical shell structure with one end closed. The magnetic shielding tube for regulation adopts a square appearance design, which is different from the traditional cylindrical tube appearance that requires additional support devices, making the placement of the shielding magnetic tube more convenient and saving space. By assuming a degaussing coil outside the Permalloy layer, the alternating electric field is used to perform the last degaussing work on the entire magnetic shielding tube, thereby increasing the working capacity of the magnetic shielding tube, reducing the thickness of the Permalloy layer, and reducing the volume of the magnetic shielding tube.

[0005] The above patent discloses a degaussing coil attached to the inner surface of the outer shell cylinder, and there is no need to manually arrange the degaussing coil. However, the above patent does not solve how to reduce the multiple operating steps in the sealed magnetic shielding cylinder and how to reduce the safety hazards caused by human misoperation. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the magnetic shielding barrel requires complex operations for demagnetization before each test and is prone to misoperation, posing a safety hazard.

[0007] In order to solve the above problems, the present invention provides an intelligent magnetic shielding barrel, comprising an outer barrel, a plurality of concentrically arranged shielding barrels are arranged in the outer barrel, a storage barrel is arranged in the innermost shielding barrel, an insulating barrel is fixedly connected between adjacent shielding barrels, and the outermost shielding barrel and the inner wall of the outer barrel, as well as the innermost shielding barrel and the storage barrel are fixedly connected by the insulating barrel; a pair of barrel covers are hingedly connected at both sides of the outer barrel by a pair of hinges, a plurality of shielding covers cooperating with the shielding barrels are arranged on the inner side of the barrel covers, and each shielding cover abuts against the corresponding shielding barrel when the barrel covers are closed; a plurality of shielding covers are penetrated by fixing tubes fixedly connected thereto, and the fixing tubes extend to the outer side of the barrel covers and are fixedly connected to the barrel covers;

[0008] A degausser is installed in the outer barrel, and a plurality of shielding cylinders and a plurality of insulating cylinders are combined to form a cylindrical assembly. The degausser includes a degaussing coil unidirectionally wound on both sides of the inner and outer sides of the cylindrical assembly. The front end and the end of the degaussing coil extend to the outside of the barrel cover and are fixedly connected to a degaussing driving power supply fixed on the barrel cover; an electric bolt for locking the hinges is installed on a pair of hinges, and a travel switch for detecting whether the hinges are closed is installed on a pair of hinges. The pair of electric bolts, the pair of travel switches and the degaussing driving power supply are all electrically connected to the same controller. The controller is also connected to a status indicator panel fixed on the outer wall of the outer barrel, and the status indicator panel includes an opening and closing indicator light and a degaussing indicator light;

[0009] The hinge includes a fixed block fixedly connected to the outer barrel and a rotating block fixedly connected to the barrel cover, a support column penetrating the rotating block is fixedly connected to the upper part of the fixed block, the electric latch includes a latch column and an electric push rod fixedly connected to the latch column, an inner hole matching the latch column is formed on the support column, and a first outer hole matching the inner hole is formed on the rotating block;

[0010] A pair of handles are fixedly connected to the outside of the barrel covers, a pair of handles are fixedly connected to latch buttons, a demagnetization button is also fixedly connected to the handle at the front end of the magnetic shielding barrel, and the pair of latch buttons and the demagnetization button are electrically connected to the controller.

[0011] In the above-mentioned intelligent magnetic shielding barrel, the convenience and safety of the demagnetization operation are improved by means of the demagnetization coil built into the magnetic shielding barrel and the electric latch arranged on the barrel cover hinge.

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

[0013] As a further improvement of the present application, the controller 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 start module and the latch start 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;

[0014] 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; 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 and the demagnetization indicator light; the input end of the demagnetization starting module is connected to the demagnetization button, and the input end of the latch starting module is respectively connected to the first latch button and the second latch button.

[0015] As a further improvement of the present application, a current sensor is connected in series to one end of the degaussing coil near the degaussing driving power supply, 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. The current monitoring module also includes a current feature comparison unit and a current feature storage unit. The current feature storage unit stores the 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.

[0016] As a further improvement of the present application, the degaussing coil includes a plurality of inner horizontal lines located in the innermost insulating cylinder and arranged parallel to the storage cylinder, a plurality of outer horizontal lines located in the outermost insulating cylinder and arranged parallel to the storage cylinder, and a plurality of connecting lines connecting the inner horizontal lines and the outer horizontal lines.

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

[0018] As a further improvement of the present application, a magnetic field detection mechanism is provided in the fixed tube located at the rear end of the magnetic shielding barrel, and the magnetic field detection mechanism includes a shielding tube fixedly nested in the fixed tube, and the shielding tube is slidably connected to the inner side of one end of the storage tube toward the storage tube, and a magnetometer is fixedly connected in the sliding tube, and the magnetometer is connected to the controller, and the sliding tube is fixedly connected to the active end of the electric telescopic cylinder on the side away from the storage tube, and the inactive end of the electric telescopic cylinder is fixedly connected to the inner wall of the shielding tube.

[0019] As a further improvement of the present application, the sliding cylinder includes 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 both in sliding contact with the inner wall of the shielding tube. 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 also connected to a repeated demagnetization module, and the output end of the repeated demagnetization module is respectively connected to the electric telescopic cylinder and the magnetometer.

[0021] To summarize, the present invention synchronously demagnetizes the multi-layer shielding barrel through a demagnetization coil built into the magnetic shielding barrel and wound around the multi-layer shielding barrel, and realizes rapid sealing and one-button demagnetization of the magnetic shielding barrel through a hinge with an electric latch, a latch button and a demagnetization button, which is easy to operate. At the same time, during demagnetization, the electric latch is used to lock the hinge fixedly connected to the barrel cover, thereby reducing operator misoperation and the probability of accidental injury to personnel caused by mistakenly opening the barrel cover during demagnetization. In addition, a status indicator panel including an opening and closing indicator light and a demagnetization indicator light is provided to remind the operator of the current status of the magnetic shielding barrel, thereby further reducing the possibility of misoperation and improving the operational safety of the magnetic shielding barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure from the right side perspective of this application;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure from the left side perspective of this application;

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

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

[0026] Figure 5 This is a schematic diagram of the installation of the degaussing coil and multiple shielding cylinders in this application;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the degaussing coil in this application;

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

[0029] Figure 8 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0030] Fig. 9 It is a schematic diagram of the exploded assembly of the hinge in this application;

[0031] Fig.10 It is a schematic diagram of the three-dimensional structure of the status indicator board in this application;

[0032] Fig.11 for Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0033] Fig.12 It is a schematic diagram of the explosion assembly of the magnetic field detection mechanism;

[0034] Fig.13 This is a schematic diagram of the sliding tube extending from the shielding tube in the present application.

[0035] Description of the numbers in the figure:

[0036] 1. Outer barrel; 2. Barrel cover; 3. Shielding barrel; 4. Insulating barrel; 5. Shielding cover; 501. Notch groove; 6. Fixed tube; 7. Storage barrel; 8. Degaussing coil; 801. Inner horizontal line; 802. Outer horizontal line; 803. Connecting line; 9. Degaussing driving power supply; 10. Current sensor; 11. Hinge; 1101. Fixed block; 1102. Rotating block; 1103. Support column; 1104. Inner hole; 1105. First outer hole; 1106 , the second outer hole; 12, electric latch; 1201, latch column; 1202, electric push rod; 13, travel switch; 14, limit block; 15, controller; 16, status indicator board; 1601, open and close indicator light; 1602, degaussing indicator light; 17, handle; 18, latch button; 19, degaussing button; 20, shielding tube; 21, sliding cylinder; 2101, rectangular box; 2102, disc; 22, magnetometer; 23, electric telescopic cylinder. DETAILED DESCRIPTION

[0037] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.

[0038] The first implementation method:

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

[0040] See also Figure 3 and Figure 7 A pair of barrel covers 2 are hingedly connected to the outer barrel 1 on both sides through a pair of hinges 11. A plurality of shielding covers 5 cooperating with the shielding cylinder 3 are arranged on the inner side of the barrel cover 2. When the barrel cover 2 is closed, each shielding cover 5 abuts against the corresponding shielding cylinder 3. The plurality of shielding covers 5 are penetrated by fixing tubes 6 fixedly connected thereto. The fixing tubes 6 extend to the outer side of the barrel cover 2 and are fixedly connected to the barrel cover 2.

[0041] See also Figure 3 and Figure 5 A demagnetizer is installed in the outer barrel 1, and a plurality of shielding cylinders 3 and a plurality of insulating cylinders 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 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. The demagnetizing driving power supply 9 loads current on the demagnetizing coil 8 so that the demagnetizing coil 8 generates a reverse magnetic field to eliminate the residual magnetic field remaining in the magnetic shielding barrel;

[0042] See also Figure 3 and Figure 8-10 , an electric bolt 12 for locking the hinge 11 is installed on the pair of hinges 11, a travel switch 13 for detecting whether the hinge 11 is closed is installed on the pair of hinges 11, the pair of electric bolts 12, the pair of travel switches 13 and the degaussing driving power supply 9 are all electrically connected to the same controller 15, and the controller 15 is also connected to a status indicator board 16 fixed on the outer wall of the outer barrel 1, and the status indicator board 16 includes an opening and closing indicator light 1601 and a degaussing indicator light 1602;

[0043] See also Figure 3 A pair of handles 17 are fixedly connected to the outer sides 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 located at the front end of the magnetic shielding barrel, and the pair of latch buttons 18 and the demagnetization button 19 are electrically connected to the controller 15.

[0044] Specifically, when demagnetization is required, the latch button 18 is pressed to start the electric latch 12 on the hinge 11 to lock the hinge 11, and then to lock a pair of barrel covers 2. Then, the demagnetization button 19 is pressed to start the demagnetization drive power supply 9, load current to the demagnetization coil 8, eliminate the residual magnetic field, and achieve one-click demagnetization. During demagnetization, the barrel cover 2 is locked to ensure the safety of demagnetization and prevent the operator from accidentally opening the barrel cover 2 during the demagnetization process. During the demagnetization process, the opening and closing indicator light 1601 and the demagnetization indicator light 1602 on the status indicator panel 16 light up to indicate the opening state and demagnetization state of the barrel cover 2, further improving the safety of operation.

[0045] Compared with the traditional magnetic shielding barrel, the present invention is provided with a demagnetization coil 8 that is unidirectionally wound on the multi-layer shielding barrel to synchronously demagnetize the multi-layer shielding barrel 3, and realizes one-click demagnetization through the hinge 11 with an electric latch 12, the latch button 18 and the demagnetization button 19, which is easy to operate. At the same time, during demagnetization, the electric latch 12 is used to lock the hinge 11 fixedly connected to the barrel cover 2, thereby reducing personnel misoperation and reducing the probability of accidental injury to personnel caused by mistakenly opening the barrel cover 2 during demagnetization; in addition, by providing a status indicator board including an opening and closing indicator light 1601 and a demagnetization indicator light 1602, the operator is reminded of the current status of the magnetic shielding barrel, thereby further reducing the possibility of misoperation and improving the operational safety of the magnetic shielding barrel.

[0046] See also Figure 5 and Figure 6 The degaussing coil 8 includes a plurality of inner horizontal lines 801 located in the innermost insulating tube 4 and arranged parallel to the storage tube 7, a plurality of outer horizontal lines 802 located in the outermost insulating tube 4 and arranged parallel to the storage tube 7, 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's rule, when current is loaded on the inner horizontal line 801 and the outer horizontal line 802, the two generate a magnetic field perpendicular to themselves, and perform reverse magnetic field demagnetization operation on multiple horizontally arranged shielding tubes 3 and corresponding shielding covers 5, which has a good demagnetization effect; it should also be noted that the demagnetization drive power supply 9 first loads a set high current and then gradually reduces it to zero when loading current. The above current loading method is a prior art and achieves a good demagnetization effect. It should be noted that the shielding cover 5 is provided with a notch groove 501 for the connecting wire to pass through.

[0048] See also Figure 8 and Fig. 9 The hinge 11 includes 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 part of the fixed block 1101. The electric latch 12 includes 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.

[0049] Specifically, when the electric push rod 1202 drives the latch column 1201 to pass through the first outer hole 1105 and insert into the inner hole 1104, the fixed block 1101 and the rotating block 1102 are both locked, and the barrel cover 2 cannot be opened; it should be noted that, in order to facilitate the distinction between a pair of electric push rods 1202 of the electric latch 12, the two are defined as the first electric push rod and the second electric push rod.

[0050] See also Fig. 9 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, the rotating block 1102 is provided with a second outer hole 1106 arranged opposite to the first outer hole 1105, a pair of electric push rods 1202 include a first electric push rod and a second electric push rod, and a pair of latch buttons 18 include a first latch button and a second latch button.

[0051] Specifically, when the barrel cover 2 is opened and flipped upward to the maximum position, the rotating block 1102 abuts against the limit 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 column 1201 passes through the second outer hole 1106 and is inserted into the inner hole 1104, thereby fixing the barrel cover 2 after opening and improving the safety of operation.

[0052] It should be noted that the travel switch 13 is fixedly connected to 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 push-type travel switch. When the rotating block 1102 squeezes the travel switch 13 to the maximum travel, the fixed block 1101 and the rotating block 1102 are closed, that is, the barrel cover 2 is closed. It should be noted that in order to distinguish a pair of travel switches 13 arranged on a pair of hinges 11, the two are defined as the first travel switch and the second travel switch.

[0054] See also Fig.10 The on / off indicator light 1601 and the demagnetization indicator light 1602 are both multi-color LED lights.

[0055] Specifically, by defining different colors to represent different states, the indication effect is further improved. For ease of understanding, an example is given as follows: when the opening and closing indicator light 1601 is green, it indicates that the barrel cover 2 is in a closed and locked state, and when the demagnetization indicator light 1602 is green at this time, it indicates that no demagnetization operation is currently being performed, and the barrel cover 2 can be opened by pressing the opening and closing button and holding the handle 17 to rotate the barrel cover 2; when the opening and closing indicator light 1601 is green, it indicates that the barrel cover 2 is in a closed and locked state, and when the demagnetization indicator light 1602 is red at this time, it indicates that a demagnetization operation is currently being performed, and pressing the latch button 18 cannot start the electric latch 12, and the barrel cover 2 cannot be opened; further improving operational safety; it should be noted that when the first electric push rod and the second electric push rod are both in an extended state and the first travel switch and the second travel switch are both compressed to the maximum travel, it can be confirmed that the entire magnetic shielding barrel is in a closed state and the demagnetization operation can be performed.

[0056] See also Figure 4The controller 15 is equipped with a control system, which includes a control module, the input end of which is respectively connected to a barrel cover monitoring module, a demagnetization monitoring module, a demagnetization start module and a latch start module, and the output end of the control module is respectively connected to a demagnetization module, a latch execution module and a status indication module;

[0057] 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, and 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;

[0058] The input end of the degaussing start module is connected to the degaussing button 19, and the input end of the latch start module is connected to the first latch button and the second latch button respectively.

[0059] Specifically, the opening and closing state of the barrel cover 2 is monitored by the barrel cover monitoring module of the control system, and the state of the demagnetization driving power supply 9 is monitored by the demagnetization monitoring module, so as to determine whether the demagnetization operation is being performed.

[0060] See also Figure 3 and Figure 4 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, and the input end of the current monitoring module is connected to the current sensor 10 .

[0061] Specifically, during the demagnetization process, the current sensor 10 is used to monitor the current flowing through the demagnetization coil 8, and leakage or short circuit of the electromagnetic coil 8 is discovered in time, so as to provide a timely warning, causing the demagnetization indicator light to flash as an alarm, and cutting off the power supply of the demagnetization drive power supply 9 to the demagnetization coil, thereby further improving the safety of the operation. It should be noted that the current monitoring module also 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. The current identification feature extracts the feature of the real-time current and compares it with the stored fault current feature.

[0062] In this embodiment, the outer barrel 1 and the barrel cover 2 are both made of aluminum material, the plurality of shielding barrels 3 are both made of Permalloy material, and the pair of fixing tubes 6 and the plurality of insulating barrels 4 are both made of insulating material.

[0063] Second implementation method:

[0064] Figure 11-13An intelligent magnetic shielding barrel is shown. Based on the first embodiment, 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 the inner side of one end of the storage barrel 7 with a sliding tube 21. A magnetometer 22 is fixedly connected to the sliding tube 21. The magnetometer 22 is connected to the controller 15. The sliding tube 21 is fixedly connected to the active end of an electric telescopic cylinder 23 on the side away from the storage barrel 7. The inactive end of the electric telescopic cylinder 23 is fixedly connected to the inner wall of the shielding tube 20.

[0065] For details, please refer to Fig.13 After a single demagnetization operation is completed, the electric telescopic cylinder 23 is started, and the electric telescopic cylinder 23 pushes the sliding cylinder 21 into the storage cylinder 7, and then the magnetometer 22 is started to detect the magnetic field in the storage cylinder 7 after demagnetization. When the detected residual magnetic field strength is higher than the set magnetic field strength threshold, the demagnetization operation is started again, and the current value loaded into the demagnetization coil 8 is increased, and the increase value is the set value, and then the demagnetization operation is performed again, and the above demagnetization and detection operations are repeated until the detected residual magnetic field strength is not higher than the set magnetic field strength threshold, the demagnetization operation is completed, and the electric telescopic cylinder 23 is started again, so that the sliding cylinder 21 returns to the shielding tube 20.

[0066] In this embodiment, the sliding cylinder 21 includes a rectangular box 2101 for accommodating the magnetometer 22 and a pair of discs 2102 fixed on both sides of the rectangular box 2101. The pair of discs 2102 are both 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.

[0067] Specifically, in the non-detection state, the magnetometer 22 is magnetically shielded and protected by a shielding tube 20 made of Permalloy and a pair of disks 2102 .

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

[0069] Specifically, during the demagnetization operation, the demagnetization effect is automatically verified, and multiple demagnetization operations are performed as needed to achieve automated demagnetization operations and improve demagnetization efficiency and demagnetization effect.

[0070] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

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 arranged inside the outer barrel (1), a storage cylinder (7) is arranged inside 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) as well as 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 arranged inside the barrel covers (2), and each shielding cover (5) abuts against the corresponding shielding cylinder (3) when the barrel covers (2) are 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); an electric bolt (12) for locking the hinges (11) is installed on the pair of hinges (11); a travel switch (13) for detecting whether the hinges (11) are closed is installed on the pair of hinges (11); the pair of electric bolts (12), the pair of travel switches (13) and the demagnetizing driving power supply (9) are 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 demagnetizing 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 outer sides of the barrel covers (2), 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 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 start module and the latch start 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 start module are both connected to the demagnetization drive 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 start module is connected to the demagnetization button (19); and the input end of the latch start 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 at one end of the degaussing coil (8) close to the degaussing driving power supply (9); 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; and the current identification feature extracts features of 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 in the innermost insulating cylinder (4) and arranged parallel to the storage cylinder (7), a plurality of outer horizontal lines (802) located in 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 comprises a shielding tube (20) fixedly nested in the fixed tube (6). A sliding tube (21) is slidably connected to the inner side of one end of the shielding tube (20) facing the storage tube (7). A magnetometer (22) is fixedly connected to the sliding tube (21). The magnetometer (22) is connected to a controller (15). A movable end of an electric telescopic cylinder (23) is fixedly connected to the side of the sliding tube (21) 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) both being in sliding contact with the inner wall of the shielding tube (20), and the pair of discs (2102) and the shielding tube (20) both being 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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