Transformer

Abstract

The invention discloses a transformer, and relates to the technical field of detection equipment, and the transformer comprises a rack which is provided with a substrate and a transformer body; the shielding mechanism is arranged at the top of the rack and used for wrapping the transformer body to form outer wrapping shielding, the shielding mechanism comprises an inner shielding case and an outer shielding case, and a cavity is formed between the inner shielding case and the outer shielding case; the supply mechanism is arranged at the bottom of the rack, the supply mechanism comprises an annular storage pipe, magnetic fluid is stored in the annular storage pipe, and the annular storage pipe is used for supplying the magnetic fluid to the shielding mechanism; the mounting mechanism is arranged at the bottom of the rack and used for clamping and positioning the supply mechanism and the shielding mechanism and adjusting the flow of the magnetic fluid in the supply mechanism and the cavity, and the mounting mechanism comprises a plurality of limiting modules; the transformer has a fixed-point cooling effect, realizes internal magnetic shielding by virtue of the magnetofluid in the inner cavity, and meanwhile, adaptively adjusts the flow of the magnetofluid according to temperature change, so that the shielding stability of the magnetofluid is ensured.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and in particular to a transformer. Background Technology

[0002] As a special type of transformer with electrical isolation function, the core feature of an isolation transformer is that there is no direct electrical connection between the input and output windings. It transmits energy based on the principle of electromagnetic induction and can effectively isolate the primary and secondary current loops, avoiding the safety risk of personnel accidentally touching live parts. It is a key device for ensuring electrical safety in the industrial and electronic fields. Its technical principle is the same as that of ordinary transformers, and it is mostly designed with a 1:1 transformation ratio. Although the secondary is not grounded, there is still a potential difference and phase difference between the secondary conductor and the ground, which requires additional protection. The announcement number "CN118899157B" relates to a transformer, which includes: an iron core comprising a main column and a side column; a first winding disposed on the main column; a second winding disposed on the side column, wherein the second winding is connected in parallel with the first winding and is supplied with an excitation current; and a reactor configured to form a series connection with the first winding, wherein the second winding and the first winding are connected such that the circulating current generated between the first winding and the second winding flows only through the first winding when entering the series connection formed by the reactor and the first winding.

[0003] However, existing technical solutions have significant drawbacks and are difficult to adapt to the requirements of high-precision and high-safety scenarios. On the one hand, there is a contradiction between heat dissipation and shielding. Although ventilation structures such as heat dissipation holes and fans can dissipate heat, they will cause the enclosure to be connected to the outside world, which will not only allow operating noise to leak out, but also allow external electromagnetic fields to intrude and internal electromagnetic fields to leak out, thus destroying the shielding integrity. On the other hand, the ability to cope with non-uniform magnetic fields is insufficient. When the transformer is running, the magnetic field in areas such as the iron core joints and winding ends is stronger.

[0004] The existing solution uses a shielding layer of uniform thickness and lacks an adaptive compensation mechanism for strong magnetic field areas, which makes it prone to magnetic field leakage. In scenarios with stringent requirements for electromagnetic environment, such as precision instrument laboratories and medical equipment rooms, the leaked magnetic field can interfere with the operation of equipment, causing data deviations, malfunctions, or even safety accidents.

[0005] Furthermore, when using magnetohydrodynamics to magnetically shield transformers, the magnetic shielding effect will continuously decrease and eventually be lost if the magnetohydrodynamics is left stagnant for a long time due to its fluidity.

[0006] Furthermore, since the temperature varies at different locations inside the transformer, the required cooling efficiency also varies. The higher the temperature of the transformer, the stronger the fluidity of the magnetic fluid. Therefore, the fluidity of the magnetic fluid varies at different temperatures in the transformer. Existing technologies cannot achieve precise control of the flow of the magnetic fluid in response to temperature changes, which in turn affects the magnetic shielding effect of the magnetic fluid on the transformer. Summary of the Invention

[0007] The purpose of this invention is to provide a transformer to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a transformer, including a frame on which a base plate and a transformer body are disposed; A shielding mechanism is installed on the top of the platform to cover the transformer body to form an outer shield. The shielding mechanism includes an inner shield and an outer shield, with a cavity formed between the inner shield and the outer shield. The supply mechanism is located at the bottom of the platform and includes an annular storage tube containing magnetic fluid for supplying the magnetic fluid to the shielding mechanism. The mounting mechanism, located at the bottom of the platform, is used to engage and position the supply mechanism and the shielding mechanism, and to adjust the flow rate of the supply mechanism and the magnetic fluid inside the cavity. The mounting mechanism includes multiple limiting modules. The temperature of the hot air discharged downward from inside the inner shield decreases, the movement of the limiting modules increases, the deformation of the annular storage tube increases, and the flow rate of the magnetic fluid between the annular storage tube and the cavity increases.

[0009] Preferably, the substrate is fixedly installed on the inner side of the stand, the transformer body is fixedly installed on the top middle of the substrate, the bottom of the shielding mechanism passes through the stand, the top output end of the supply mechanism and the bottom input end of the shielding mechanism are connected, the upper end of the supply mechanism is engaged with the mounting mechanism, the bottom end of the shielding mechanism passes through the stand and is also engaged with the mounting mechanism, and the limiting modules are arranged in a ring at equal intervals and fixedly connected to the bottom of the substrate.

[0010] Preferably, the shielding mechanism further includes: The square frame base is located at the top outer edge of the platform. The top inner edge of the square frame base is fixedly connected to the inner shielding cover, and the top outer edge of the square frame base is fixedly connected to the outer shielding cover. The cavity is provided with a copper foil layer. The upper ends of the inner and outer shielding covers are conical. The inner and outer shielding covers are used to cover and shield the transformer body. The cavity is used to accommodate the magnetic fluid that adheres and flows to the area with a strong magnetic field when the transformer body generates a magnetic field. The inner shielding cover covers the outside of the transformer body. The bottom inner edge of the square frame base is sealed by a sealing gasket and a substrate. The connecting buckets are arranged in a ring at equal intervals and fixedly installed at the bottom of the square frame base. The top of the connecting buckets is connected to the bottom of the cavity. The bottom of the connecting buckets is provided with a sleeve joint, which is used to install the connecting supply mechanism. The ventilation module is fixedly installed on the top of the inner and outer shielding covers. The bottom of the ventilation module is connected to the inner cavity of the inner shielding cover. The ventilation module is used to ventilate, dissipate heat and dehumidify the chassis inside the inner shielding cover where the transformer body is housed.

[0011] Preferably, the ventilation module includes: An exhaust fan is fixedly installed on the top of the inner and outer shielding covers. The bottom of the exhaust fan is connected to the inner cavity of the inner shielding cover. An air inlet bend is fixedly installed on the top of the exhaust fan, and an air exchange sleeve is fixedly installed on the outer end of the air inlet bend. The shielding plates are fixedly installed inside the ventilation sleeve, with equal spacing and spiral arrangement of the shielding plates. The sound-absorbing panel is fixedly installed on the side of the shielding plate closest to the exhaust fan.

[0012] Preferably, the shielding mechanism further includes: A closed module is fixedly installed at the output end of the ventilation module. The ventilation module covers and seals the ventilation module when the transformer body does not require ventilation and heat dissipation. The lower row seat is fixedly installed inside the substrate. The bottom end of the lower row seat penetrates the substrate and communicates with the outside. A one-way exhaust valve is fixedly installed inside the lower row seat. The output end of the one-way exhaust valve is located at the bottom output end of the lower row seat. The input end of the one-way exhaust valve is connected to the gap in the inner shielding cover that houses the transformer body. The one-way exhaust valve is used to exhaust air in one direction when ventilation is required.

[0013] Preferably, the annular storage tube is disposed at the bottom of the frame, and the top of the annular storage tube is fixedly installed with insertion connectors arranged in a ring at equal intervals. The top end of the insertion connector is inserted into the inside of the sleeve connector. The outer surface of the top end of the insertion connector and the inside of the sleeve connector are provided with matching sealing gaskets. The magnetic fluid inside the annular storage tube is set as a nano-ferrite-based magnetic fluid. The annular storage tube communicates with the cavity through the insertion connector and the sleeve connector.

[0014] Preferably, the installation mechanism also includes: The upper plates, arranged in a ring at equal intervals, are fixedly installed on the lower end of the connecting bucket near the base plate. The lower plate is fixedly installed on the top of the annular storage tube in a ring-shaped arrangement with equal spacing. The lower and upper ends of the upper plate are provided with limit holes. The upper plate is engaged with the limit module through the limit hole at the lower end. The upper plate achieves the positioning and installation of the shielding mechanism by engaging with the limit module. The upper plate is engaged with the limit module through the limit hole at the upper end. The upper plate achieves the positioning and installation of the supply module by engaging with the limit module. The disassembly and assembly module is rotatably mounted at the bottom center of the base plate. The outer end of the disassembly and assembly module is linked to the bottom of each limiting module. The disassembly and assembly module is used to disassemble and assemble the shielding mechanism and the supply mechanism.

[0015] Preferably, the limiting module includes: The guide rails are arranged in a ring at equal intervals and fixedly installed on the bottom of the base plate. A reset component is fixedly connected inside the guide rails. A slider is fixedly installed on the outer end of the reset component. The slider is slidably connected to the inside of the guide rails, and the inside of the guide rails is connected to the bottom of the lower row seat. The bottom of the slider is movably connected to the limit plate through an elastic component. A locking pin is fixedly installed on the other side of the limit plate. A conical shell is fixedly connected above the locking pin. The height of the conical shell gradually increases from the end of the limit plate to the other end. Both the locking pin and the conical shell pass through the limit holes inside the lower plate and the upper plate. The pressure relief hole is located on one side of the guide rail and corresponds to the lower seat. Hot air discharged downward from the lower seat is discharged through the pressure relief hole.

[0016] Preferably, the limiting module includes: An expansion body is movably connected inside the pressure relief hole. A wedge-shaped baffle is fixedly connected to the end of the expansion body. The height of the wedge-shaped baffle gradually increases from one end of the expansion body to the other. When the temperature discharged below the annular seat increases, the volume of the expansion body increases and drives the wedge-shaped baffle to move, thereby increasing the exhaust area of ​​the pressure relief hole. The movable hole is located inside the guide rail, and its width is smaller than that of the pressure relief hole. When the wedge baffle moves the same distance, the area change of the pressure relief hole is greater than that of the movable hole. A rotating shaft is rotatably connected to the wedge baffle via a mounting plate, and multiple swing plates are uniformly fixed to the outer surface of the rotating shaft. The ends of the swing plates match the side walls of the limiting plate. The swing plates contact the limiting plate and drive the locking pin and the conical shell to move laterally inside the limiting hole.

[0017] The technical effects and advantages of this invention are as follows: 1. During the application of this technical solution, by setting up a supply mechanism containing magnetic fluid in conjunction with a shielding mechanism, it achieves the effect of targeted strengthening of the shielding of strong magnetic field areas and compensating for the aging and protection failure of the shielding layer, greatly improving the targeting and reliability of magnetic field shielding, effectively blocking external electromagnetic interference from entering the transformer body, and preventing the electromagnetic field generated by the transformer body from leaking outward, ensuring the operational stability of the transformer body, and avoiding interference to surrounding precision equipment. 2. During the application of this technical solution, by setting up a ventilation module with a spiral shielding plate and a sound-absorbing plate, the effect of ventilation and heat dissipation, shielding and noise reduction are achieved simultaneously. While ensuring heat dissipation efficiency, the shielding integrity is maintained, the impact of noise on the external environment is reduced, and the overall performance is improved. 3. During the application of this technical solution, by setting up an installation mechanism with a linkage structure, the shielding mechanism and the supply mechanism can be quickly and accurately connected and installed, and easily disassembled. This enables synchronous control of the extension and retraction of the locking pin and the connection of the magnetic fluid channel, simplifies the installation and disassembly process, reduces the difficulty of operation, and improves the convenience of equipment maintenance.

[0018] 4. During the application of this technical solution, by setting wedge-shaped baffles and expansion bodies, the amount of hot air discharged from below the lower seat can be adaptively adjusted to ensure that the exhaust rate is adjusted accordingly to the temperature change of the transformer body during actual use, so as to meet the actual cooling requirements.

[0019] 5. During the application of this technical solution, by setting up a swing plate and a conical shell to cooperate, part of the hot air discharged from the moving hole drives the swing plate to rotate around the rotating shaft continuously. The swing plate continuously applies a thrust to the limiting plate and drives the locking pin and the conical shell to move back and forth, further realizing the up and down movement of the lower locking plate, improving the fluidity of the magnetic fluid between the annular storage tube and the cavity, and avoiding sedimentation caused by long-term static placement, which affects the magnetic shielding effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a bottom-view structural diagram of the present invention; Figure 3 This is a schematic diagram of the ventilation module and the closing module structure of the present invention; Figure 4 This is a top view of the substrate structure of the present invention; Figure 5 This is a schematic diagram of the disassembled installation mechanism and shielding mechanism of the present invention; Figure 6 This is a schematic diagram of the shielding mechanism, supply mechanism, and installation mechanism of the present invention. Figure 7 For the present invention Figure 5 A magnified structural diagram at point A; Figure 8 This is a partial structural diagram of the shielding mechanism, supply mechanism, and installation mechanism according to Embodiment 2 of the present invention; Figure 9 for Figure 8 Enlarged view of point B in the middle; Figure 10 This is a schematic diagram of the installation mechanism in Embodiment 2 of the present invention.

[0021] In the diagram: 1. Stand; 2. Base plate; 3. Transformer body; 4. Support leg; 5. Base frame; 6. Shielding mechanism; 61. Square frame base; 62. Inner shielding cover; 63. Outer shielding cover; 64. Cavity; 65. Connecting hopper; 66. Sleeve joint; 67. Ventilation module; 671. Exhaust fan; 672. Air inlet bend; 673. Ventilation sleeve; 674. Shielding plate; 675. Sound-absorbing plate; 68. Closing module; 681. Fixed outer ring; 682. Base plate; 683. Drive motor; 684. Connecting plate; 685. Cover plate; 69. Lower row seat; 610. One-way exhaust valve; 7. Supply mechanism; 71. Annular storage tube 72. Insertion connector; 8. Mounting mechanism; 81. Limiting module; 811. Guide rail; 812. Reset component; 813. Slider; 814. Limiting plate; 815. Locking pin; 816. Elastic component; 817. Pressure relief hole; 818. Expansion body; 819. Wedge baffle; 8110. Mounting plate; 8111. Rotating shaft; 8112. Swing plate; 8113. Conical shell; 8114. Moving hole; 82. Upper clamping plate; 83. Lower clamping plate; 84. Limiting hole; 85. Disassembly and assembly module; 851. Central shaft; 852. Cross plate; 853. Linkage frame; 854. Hinge frame; 855. Connecting shaft; 856. Driving component. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1 like Figures 1 to 7As shown, according to the transformer provided by the present invention, during the application of this technical solution, multiple pain points of the prior art are effectively solved through multi-structure collaborative design. It utilizes a supply mechanism 7 containing magnetic fluid in cooperation with a shielding mechanism 6. When the transformer body 3 generates a non-uniform magnetic field during operation, the magnetic fluid can adaptively flow and accumulate towards the strong magnetic field region under the action of the magnetic field gradient to form an enhanced shielding layer. Furthermore, when the inner shielding cover 62 locally ages and thins, leading to an increase in magnetic field propagation intensity, the magnetic fluid can actively cover this area to form supplementary shielding protection. Simultaneously, a copper foil layer disposed inside the cavity 64 between the inner shielding cover 62 and the outer shielding cover 63 further enhances the electric field shielding. The shielding effect, combined with the basic shielding of the inner shielding cover 62 and the outer shielding cover 63, forms a multi-layer shielding structure. This solves the problems of fixed-thickness shielding layers being unable to cope with non-uniform magnetic fields, easy leakage in strong magnetic field areas, and shielding layer aging leading to protection failure. It significantly improves the targeting and reliability of magnetic field shielding, effectively blocking external electromagnetic interference from entering the transformer body 3, ensuring stable transformer operation, and avoiding interference with surrounding precision equipment. At the same time, by setting a ventilation module 67 with a spiral shielding plate 674 and a sound-absorbing plate 675, as well as a controllable closing module 68 and a one-way exhaust valve 610, ventilation can be provided when the transformer needs ventilation and heat dissipation. The exhaust fan 671 of module 67 draws air through the inlet bend 672 into the ventilation sleeve 673. Inside the ventilation sleeve 673, a spiral shielding plate 674 blocks linearly propagating magnetic fields and noise. The sound-absorbing plate 675 on the side of the shielding plate 674 closest to the exhaust fan 671 absorbs noise. When heat dissipation is not required, the drive motor 683 of module 68 closes, causing the cover plate 685 to rotate and cover the outside of the ventilation sleeve 673. Meanwhile, the one-way exhaust valve 610 inside the lower seat 69 automatically opens and discharges hot air downwards. This resolves the contradiction between incomplete shielding and noise and electromagnetic field leakage caused by the ventilation structure, achieving simultaneous ventilation, shielding, and noise reduction. In addition, relying on the installation mechanism 8 with a linkage structure, during installation, rotating the drive component 856 of the installation mechanism 8 drives the connecting shaft 855, cross plate 852, linkage frame 853, and hinge frame 854 to move together, so that the slider 813 of the limit module 81 squeezes the reset component 812 to retract the locking pin 815, and simultaneously connects the upper locking plate 82 and the lower locking plate 83, the insertion connector 72 and the sleeve connector 66. After releasing the drive component 856, the reset component 812 resets and pushes the locking pin 815 to complete the positioning. During disassembly, the disassembly and assembly module 85 can be adjusted again to separate the structure, which solves the problem of complicated equipment installation and disassembly process, simplifies operation and improves maintenance convenience.

[0024] In terms of specific structural installation, the structural body can be constructed according to the inventive concept of this embodiment. In this embodiment, no special limitations are imposed.

[0025] In this embodiment, a transformer includes: a stand 1, on which a base plate 2, a transformer body 3, a support leg 4 and a bottom frame 5 are provided. The base plate 2 is fixedly installed on the inner side of the stand 1, the transformer body 3 is fixedly installed on the top middle of the base plate 2, the support leg 4 is fixedly installed on the bottom inside of the stand 1, and the bottom frame 5 is fixedly installed on the bottom of the support leg 4.

[0026] The shielding mechanism 6 is located on the top of the platform 1, and its bottom passes through the platform 1. The shielding mechanism 6 is used to cover the transformer body 3 to form an outer shield, so as to achieve the outer shielding effect of the transformer body 3. The shielding mechanism 6 includes an inner shielding cover 62 and an outer shielding cover 63. A cavity 64 is formed between the inner shielding cover 62 and the outer shielding cover 63. Magnetorheological fluid flows inside the cavity 64 for magnetic shielding.

[0027] The supply mechanism 7 is located at the bottom of the platform 1. The top output end of the supply mechanism 7 is connected to the bottom input end of the shielding mechanism 6. The supply mechanism 7 is used to supply magnetic fluid to the shielding mechanism 6 so as to achieve the shielding effect of the shielding mechanism 6 by covering the magnetic fluid. The supply mechanism 7 includes an annular storage tube 71, which stores magnetic fluid inside.

[0028] The mounting mechanism 8 is located at the bottom of the platform 1. The upper end of the supply mechanism 7 is engaged with the mounting mechanism 8, and the bottom end of the shielding mechanism 6 passes through the platform 1 and is also engaged with the mounting mechanism 8. The mounting mechanism 8 is used to synchronously engage and position the supply mechanism 7 and the shielding mechanism 6 to ensure synchronous positioning of the shielding mechanism 6 and the supply mechanism 7, while ensuring stable and continuous delivery of the magnetic fluid.

[0029] The shielding mechanism 6 includes a square frame base 61, which is located at the top outer edge of the platform 1. The top inner edge of the square frame base 61 is fixedly connected to the inner shielding cover 62, and the top outer edge of the square frame base 61 is fixedly connected to the outer shielding cover 63. A copper foil layer is provided inside the cavity 64. The upper ends of the inner shielding cover 62 and the outer shielding cover 63 are conical. The inner shielding cover 62 and the outer shielding cover 63 are used to cover and shield the transformer body 3. The cavity 64 formed between the inner shielding cover 62 and the outer shielding cover 63 is used to accommodate the magnetic fluid to flow to the area with a strong magnetic field when the transformer body 3 generates a magnetic field, so as to achieve an enhanced shielding effect by filling and covering the area with a strong magnetic field. The inner shielding cover 62 covers the outside of the transformer body 3, and the bottom inner edge of the square frame base 61 is sealed by a sealing gasket and the base plate 2.

[0030] The connecting buckets 65 are fixedly installed at the bottom of the square frame base 61 in a ring with equal spacing. The top of the connecting buckets 65 is connected to the bottom of the cavity 64. The bottom of the connecting buckets 65 is provided with a sleeve joint 66, which is used to sleeve the connecting supply mechanism 7.

[0031] The ventilation module 67 is fixedly installed on the top of the inner shield 62 and the outer shield 63. The bottom of the ventilation module 67 is connected to the inner cavity of the inner shield 62. The ventilation module 67 is used to ventilate, dissipate heat and dehumidify the chassis at the gap of the transformer body 3 inside the inner shield 62.

[0032] The closed module 68 is fixedly installed at the output end of the ventilation module 67. The ventilation module 67 covers and seals the transformer body 3 when ventilation and heat dissipation are not required.

[0033] The lower seat 69 is fixedly installed inside the substrate 2. The bottom end of the lower seat 69 passes through the substrate 2 and communicates with the outside. A one-way exhaust valve 610 is fixedly installed inside the lower seat 69. The output end of the one-way exhaust valve 610 is located at the bottom output end of the lower seat 69. The input end of the one-way exhaust valve 610 is connected to the gap in the inner shield 62 that houses the transformer body 3. The one-way exhaust valve 610 is used to exhaust air in one direction when ventilation is required to achieve a stable air intake and ventilation effect. When there is no ventilation, the one-way exhaust design of the one-way valve can seal the internal space of the inner shield 62.

[0034] The ventilation module 67 includes an exhaust fan 671, which is fixedly installed on the top of the inner shield 62 and the outer shield 63. The bottom of the exhaust fan 671 is connected to the inner cavity of the inner shield 62. An air inlet bend 672 is fixedly installed on the top of the exhaust fan 671. An air exchange sleeve 673 is fixedly installed on the outer end of the air inlet bend 672. The air exchange sleeve 673 is used for ventilation and exhaust while ensuring the shielding effect.

[0035] The shielding plates 674 are fixedly installed inside the ventilation sleeve 673 in a spiral arrangement with equal spacing. The shielding plates 674 are arranged in a spiral arrangement with equal spacing to fully cover the inside of the ventilation sleeve 673 while ensuring that the ventilation sleeve 673 can exhaust, dissipate heat and ventilate. The spirally arranged shielding plates 674 can fully cover and block the airflow while guiding the airflow, ensuring the shielding effect during ventilation.

[0036] The sound-absorbing panel 675 is fixedly installed on the side of the shielding plate 674 near the exhaust fan 671. The sound-absorbing panel 675 is used to absorb and reduce the noise of the transformer body 3. The sound-absorbing panel 675 is arranged in a spiral shape with equal spacing along with the shielding plate 674 to ensure full coverage and block noise, thus ensuring its noise reduction effect.

[0037] The closed module 68 includes a fixed outer ring 681, which is fixedly installed on the outer end of the ventilation sleeve 673. A base plate 682 is fixedly installed on the bottom of the fixed outer ring 681. A drive motor 683 is fixedly installed on the side of the base plate 682 near the ventilation sleeve 673. A connecting plate 684 is fixedly installed through the base plate 682. A cover plate 685 is fixedly installed on the outer end of the connecting plate 684. The cover plate 685 covers the outer side of the ventilation sleeve 673. The drive motor 683 drives the cover plate 685 to rotate for flexible opening and closing of the outer side of the ventilation sleeve 673, ensuring that it can ventilate when ventilation is needed and seal when sealing is needed.

[0038] The supply mechanism 7 includes an annular storage tube 71, which is located at the bottom of the platform 1. The top of the annular storage tube 71 is fixedly installed with insertion connectors 72 arranged in a ring at equal intervals. The top of the insertion connectors 72 is inserted into the inside of the sleeve connectors 66. The outer surface of the top of the insertion connectors 72 and the inside of the sleeve connectors 66 are provided with matching sealing gaskets. The annular storage tube 71 stores magnetic fluid. The magnetic fluid inside the annular storage tube 71 is set as nano-ferrite-based magnetic fluid. The annular storage tube 71 is connected to the cavity 64 through the insertion connectors 72 and the sleeve connectors 66. The annular storage tube 71 is used to store magnetic fluid to ensure that the magnetic fluid can enter the cavity 64 through the insertion connectors 72 and the sleeve connectors 66 during the operation of the transformer body 3 to form a magnetic fluid shielding layer.

[0039] The mounting mechanism 8 includes a limiting module 81, which is fixedly connected to the bottom of the substrate 2 in a ring with equal spacing; an upper clamping plate 82, which is fixedly installed on the lower end of the connecting hopper 65 near the substrate 2 in a ring with equal spacing, and a limiting hole 84 is opened at the lower end of the upper clamping plate 82. The upper clamping plate 82 is engaged with the limiting module 81 through the limiting hole 84 at the lower end. The upper clamping plate 82 achieves the positioning and installation of the shielding mechanism 6 by engaging with the limiting module 81; and a lower clamping plate 83, which is fixedly installed on the top of the annular storage tube 71 in a ring with equal spacing, and a limiting hole 84 is also opened at the upper end of the upper clamping plate 82. The upper clamping plate 82 is engaged with the limiting module 81 through the limiting hole 84 at the upper end. The upper clamping plate 82 achieves the positioning and installation of the supply module by engaging with the limiting module 81. After the supply module is engaged by the limiting module 81.

[0040] The disassembly module 85 is rotatably mounted at the bottom center of the base plate 2. The outer end of the disassembly module 85 is linked to the bottom of each limiting module 81. The disassembly module 85 is used for quick disassembly and assembly of the shielding mechanism 6 and the supply mechanism 7.

[0041] The limiting module 81 includes a guide rail 811, which is fixedly installed on the bottom of the base plate 2 in a ring with equal spacing. A reset member 812 is fixedly connected inside the guide rail 811. A slider 813 is fixedly installed on the outer end of the reset member 812. The slider 813 is slidably connected to the inside of the guide rail 811, and the inside of the guide rail 811 is connected to the inside of the lower row seat 69. Therefore, the gas inside the lower row seat 69 is directly discharged downward along the guide rail 811. The bottom of the slider 813 is movably connected to the limiting disk 814 through the elastic member 816. A locking pin 815 is fixedly installed on the other side of the limiting disk 814. The locking pin 815 passes through the limiting hole 84 of the lower plate 83 and is inserted into the limiting hole 84 of the upper plate 82. The reset member 812 is used to provide elastic force to the slider 813. The extension of the reset member 812 can ensure that the locking pin 815 on the outside of the limiting disk 814 limits the upper plate 82 and the lower plate 83.

[0042] The disassembly and assembly module 85 includes a central shaft 851, which is rotatably connected to the bottom center of the shielding floor. A cross disc 852 is fixedly installed at the bottom of the central shaft 851. Each end of the top of the cross disc 852 is rotatably connected to a linkage frame 853. The outer end of the linkage frame 853 is rotatably connected to a hinge frame 854. The outer side of the hinge frame 854 is fixedly connected to the side of the limiting plate 814 away from the locking pin 815. When the cross disc 852 is rotating, it pulls the linkage frame 853 to move in conjunction. After the linkage frame 853 is pulled by the cross disc 852, it can drive the slider 813 to move inward and squeeze the reset piece 812 to retract, so as to realize that the locking pin 815 is disengaged from the upper plate 82 and the limiting hole 84 of the lower plate 83 to assist in completing the disassembly and assembly.

[0043] The connecting shaft 855 is fixedly installed at the bottom of the cross plate 852. A driving component 856 is fixedly installed at the bottom end of the connecting shaft 855. The driving component 856 is used to assist in manually twisting the connecting shaft 855 to drive the cross plate 852 to rotate for disassembly and assembly work.

[0044] When using a transformer in this embodiment, the disassembly and assembly module 85 needs to be adjusted before installation. At this time, the drive component 856 is rotated, which drives the bottom connecting shaft 855 to rotate. The connecting shaft 855 transmits torque to the cross plate 852, causing the cross plate 852 to rotate. The linkage frame 853 connected to each end of the top of the cross plate 852 is pulled synchronously as the cross plate 852 rotates. The end of the linkage frame 853 away from the cross plate 852 pulls the hinge frame 854. The hinge frame 854 drives the limit plate 814 fixed thereto to move away from the limit hole 84. The limit plate 814 pushes the slider 813 to slide along the guide rail 811 into the guide rail 811. The slider 813 squeezes the reset component 812 to retract it until the locking pin 815 is completely retracted to the inside of the guide rail 811. At this time, the locking pin 815 no longer obstructs the docking of the upper plate 82 and the lower plate 83.

[0045] Next, align the upper locking plate 82 of the shielding mechanism 6 with the lower locking plate 83 of the supply mechanism 7, ensuring that the limiting holes 84 of both are on the same axis. During this process, simultaneously align the insertion connector 72 at the top of the annular storage tube 71 of the supply mechanism 7 with the sleeve connector 66 at the bottom of the connecting hopper 65 of the shielding mechanism 6, and slowly push the supply mechanism 7 or the shielding mechanism 6 so that the insertion connector 72 is gradually inserted into the sleeve connector 66 until the limiting holes 84 of the upper locking plate 82 and the lower locking plate 83 are completely aligned; then release the driving component 856 and the reset component 812. After the compression is released, the natural extension generates thrust, pushing the slider 813 to slide along the guide rail 811 towards the limiting hole 84. The slider 813 drives the bottom limiting plate 814 to move synchronously, thereby causing the locking pin 815 on the outside of the limiting plate 814 to pass through the limiting hole 84 of the lower plate 83 and insert into the limiting hole 84 of the upper plate 82, completing the locking and positioning of the shielding mechanism 6 and the supply mechanism 7. At this time, the insertion connector 72 has been fully inserted into the sleeve connector 66, and the sealing gaskets between the two are tightly fitted to ensure the sealing of the magnetic fluid transport channel.

[0046] If disassembly and reassembly are required in the future, rotate the drive component 856 again to repeat the linkage process. Operate the drive component 856 to cause the connecting shaft 855 to drive the cross plate 852 to rotate. The linkage frame 853 pulls the hinge frame 854 to move the limit plate 814. The slider 813 squeezes the reset component 812 to retract. The locking pin 815 disengages from the limit hole 84 of the upper plate 82 and the lower plate 83. At this time, the shielding mechanism 6 and the supply mechanism 7 lose their limit constraints. Pull the shielding mechanism 6 and the supply mechanism 7 in opposite directions. The insertion connector 72 is gradually pulled out from the inside of the sleeve connector 66 until the two are completely separated. The shielding mechanism 6 and the supply mechanism 7 can then be completely disassembled. Throughout the entire installation and disassembly process, the docking and separation of the insertion connector 72 and the sleeve connector 66 are always synchronized with the limit action of the installation mechanism 8 to ensure the consistency of the magnetofluid channel connection and structural positioning.

[0047] After installation, the shielding mechanism 6 is deployed and the magnetofluid is supplied. The square frame base 61 of the shielding mechanism 6 is located on the outer edge of the top of the platform 1. The inner edge of the bottom of the square frame base 61 is sealed to the base plate 2 by a sealing gasket to ensure the bottom sealing of the shielding mechanism 6. The inner shielding cover 62 on the inner side of the top of the square frame base 61 and the outer shielding cover 63 on the outer side form a cavity 64. A copper foil layer is provided inside the cavity 64. The upper ends of the inner shielding cover 62 and the outer shielding cover 63 are conical. The inner shielding cover 62 covers the transformer body 3. On the outside, the annular storage tube 71 of the supply mechanism 7 is located at the bottom of the platform 1. The nano-ferrite-based magnetic fluid stored inside enters the cavity 64 through the communication channel between the insertion connector 72 and the sleeve connector 66. In the initial state, the magnetic fluid fills the bottom of the cavity 64. The copper foil layer in the cavity 64 can help enhance the electric field shielding effect. With the subsequent action of the magnetic fluid, a more comprehensive shielding foundation is formed. The sealed fit between the insertion connector 72 and the sleeve connector 66 can effectively prevent magnetic fluid leakage and ensure the stability of the magnetic fluid supply. When the transformer body 3 is running, it enters the adaptive shielding stage. Due to the uneven distribution of the magnetic field generated by the transformer body 3, the magnetic field strength is high in areas such as the core joints and winding ends, and the magnetic field propagation has a linear characteristic. At this time, the nano-ferrite-based magnetic fluid in the cavity 64 will actively flow and accumulate towards the area of ​​high magnetic field strength under the action of the magnetic field gradient, and then adhere to the inner walls of the inner shield 62 and outer shield 63, forming an enhanced shielding layer. This flow of magnetic fluid automatically adjusts according to changes in the magnetic field, achieving adaptive shielding compensation. Even if the magnetic field distribution changes with the transformer's operating state, the magnetic fluid can respond in real time, always forming enhanced shielding in areas of strong magnetic field, fully compensating for the inability of traditional fixed shielding layers to cope with changes in magnetic field. More importantly, if the inner shield... After long-term use, the shield 62 ages in a certain area, causing the shielding layer in that area to thin. The magnetic field propagation intensity in this area will increase accordingly. The magnetohydrodynamic fluid can sense the enhanced magnetic field in this area and actively flows and gathers towards the thinned area, covering the inner wall of the inner shield 62 in the aging area to form a supplementary shielding protection, avoiding magnetic field leakage caused by local aging of the inner shield 62. At the same time, the copper foil layer in the cavity 64 can further optimize the electric field shielding effect and prevent electric field leakage. The inner shield 62 and the outer shield 63 themselves provide basic shielding for the outer side of the transformer body 3. Meanwhile, the area where the magnetohydrodynamic shielding layer is attached is equivalent to thickening the copper foil layer, which can further improve the electromagnetic shielding effect. With the adaptive gathering of the magnetohydrodynamic fluid and the assistance of the copper foil layer, a multi-layer shielding structure is formed.

[0048] When the transformer body 3 generates heat during operation and requires ventilation, the exhaust fan 671 of the ventilation module 67 of this device is started. At this time, the drive motor 683 of the closed module 68 is turned, driving the connecting plate 684 to rotate, so that the cover plate 685 moves away from the outside of the ventilation sleeve 673. The outer end of the ventilation sleeve 673 is open to allow hot air to enter. The operation of the exhaust fan 671 allows outside air to enter the inner shielding cover 62 through the ventilation sleeve 673, the air inlet bend 672 and the exhaust fan 671 in sequence. Since magnetic fields and noises both propagate in a straight line, and the shielding plates 674 inside the ventilation sleeve 673 are arranged in a spiral with equal spacing, this spiral arrangement can form a comprehensive and uniform shielding of the internal space of the sleeve while guiding the airflow. No matter which direction the magnetic field or noise tries to propagate outward through the ventilation channel, it will be blocked by the spirally distributed shielding plates 674. Even if the air flows, there will be no shielding gaps, ensuring that a good shielding effect is maintained at all times during ventilation and preventing electromagnetic field leakage through the ventilation channel.

[0049] Meanwhile, the sound-absorbing plate 675 on the side of the shielding plate 674 closest to the exhaust fan 671 can fully contact the linearly propagating noise when the airflow passes through it. By absorbing noise energy through its own structure, it effectively reduces the outward propagation of noise, achieving simultaneous ventilation, shielding, and noise reduction. At the same time, the one-way exhaust valve 610 inside the lower seat 69 opens, and the hot air inside the inner shielding cover 62 is discharged downward through the one-way exhaust valve 610, achieving efficient heat dissipation. When heat dissipation is not required, the drive motor 683 drives the cover plate 685 to rotate and cover the outside of the ventilation sleeve 673, and the one-way exhaust valve 610 automatically closes and seals the internal space of the inner shielding cover 62.

[0050] It should be further explained that, during use, depending on specific application requirements, a PT100 temperature sensor (measurement range -200℃~650℃, accuracy ±0.1℃) can be installed near the winding of transformer body 3 to monitor the winding temperature in real time. When the temperature exceeds the limit, the controller triggers the exhaust fan 671 to start. A Hall magnetic field sensor (measurement range 0~500mT, accuracy ±1mT) can be installed in the cavity 64 between the inner shield 62 and the outer shield 63 to detect the magnetic field distribution intensity and assist in judging the magnetofluid accumulation effect. A vibration sensor (measurement range 0~500Hz, sensitivity 10mV / g~100mV / g) can be installed at the bottom support leg 4 of the platform 1 to monitor the equipment vibration. A pressure sensor (measurement range 0~1MPa, accuracy ±0.5%FS) can be installed at the connection between the insertion connector 72 and the sleeve connector 66 to detect the sealing of the magnetofluid transport channel. All of the above sensors are connected to the corresponding interfaces of the controller through wires and can be selected for installation according to requirements to realize automatic operation of the equipment or assist manual monitoring.

[0051] Example 2 like Figures 8 to 10As shown, since the heat generated at different locations of the transformer body 3 inside the inner shield 62 varies during actual operation, the cooling efficiency at different locations cannot be adjusted accordingly when using the exhaust fan 671 to cool it, thus affecting the cooling effect on the transformer body 3. Furthermore, due to its own fluid structure, the magnetic fluid inside the cavity 64 will reduce its magnetic shielding effect on the transformer body 3 if it remains stationary inside the cavity 64 for a long time. Moreover, the fluidity of the magnetic fluid gradually decreases as the temperature decreases. Therefore, when the temperature changes at different locations of the transformer body 3, the fluidity of the magnetic fluid also changes, which in turn affects the magnetic shielding effect of the magnetic fluid on the inside of the transformer body 3.

[0052] To address the aforementioned issues, the transformer further includes: an installation mechanism 8 that adjusts the flow rate of the magnetic fluid between the supply mechanism 7 and the cavity 64, thereby ensuring the fluidity of the magnetic fluid inside the cavity 64. This fluidity is directly related to temperature; higher temperatures result in greater fluidity. However, when the magnetic fluid inside the cavity 64 magnetically shields the transformer body 3, its fluidity needs to be adjusted according to its own temperature adaptability to ensure a continuous and stable shielding effect. The temperature of the hot air discharged downwards from the inner shielding cover 62 decreases, the movement of the limit module 81 increases, the deformation of the annular storage tube 71 increases, and the flow rate of the magnetic fluid between the annular storage tube 71 and the cavity 64 increases, thus preventing the magnetic fluid from settling and depositing inside the cavity 64, which would affect the shielding effect.

[0053] A conical shell 8113 is fixedly connected above the locking pin 815. The height of the conical shell 8113 gradually increases from one end of the limiting plate 814 to the other. Both the locking pin 815 and the conical shell 8113 penetrate the limiting holes 84 inside the lower locking plate 83 and the upper locking plate 82. The lower part of the locking pin 815 is mutually supported and engaged with the lower part of the limiting hole 84 inside the upper locking plate 82, while the upper part of the conical shell 8113 is mutually supported and engaged with the upper part of the limiting hole 84 inside the lower locking plate 83. Therefore, when the locking pin 815 and the conical shell 8113 move laterally inside the limiting hole 84, the conical shell 8113 and the inner wall of the limiting hole 84 press against each other and drive the lower locking plate 814. 3. Move up and down to adjust the pressing pressure of the lower clamping plate 83 on the annular storage tube 71. The lower clamping plate 83 is directly facing the bottom of the annular storage tube 71. Since the annular storage tube 71 is elastic, the lower clamping plate 83 moves upward and squeezes the bottom of the annular storage tube 71 to cause elastic deformation. This allows the magnetic fluid inside the annular storage tube 71 to enter the cavity 64 through the insertion joint 72 and the sleeve joint 66 for magnetic shielding. The pressure relief hole 817 is opened on one side of the guide rail 811 and corresponds to the lower row seat 69. The hot air discharged downward from the lower row seat 69 is discharged through the pressure relief hole 817. Part of the hot air discharged from the lower row seat 69 is discharged through the pressure relief hole 817.

[0054] An expansion body 818 is movably connected inside a pressure relief hole 817. It can expand when heated, and can be constructed in various ways, such as a bimetallic strip. A wedge-shaped baffle 819 is fixedly connected to the end of the expansion body 818, and the height of the wedge-shaped baffle 819 gradually increases from one end of the expansion body 818 to the other. When the temperature discharged below the lower seat 69 increases, the volume of the expansion body 818 increases and drives the wedge-shaped baffle 819 to move, thereby increasing the exhaust area of ​​the pressure relief hole 817 and improving the heat dissipation efficiency of the hot air.

[0055] The movable hole 8114 is located inside the guide rail 811, and its width is smaller than that of the pressure relief hole 817. That is, when the wedge baffle 819 moves the same distance, the area change of the pressure relief hole 817 is greater than that of the movable hole 8114. Therefore, when the volume of the expansion body 818 increases and drives the wedge baffle 819 to move, the opening area of ​​the pressure relief hole 817 is greater than the closing area of ​​the movable hole 8114. The opening area below the lower seat 69 increases, correspondingly increasing the hot air discharge volume. A rotating shaft 8111 is rotatably connected to the lower part of the wedge baffle 819 via a mounting plate 8110, and multiple swing plates 8112 are uniformly fixed to the outer surface of the rotating shaft 8111. The end of 112 matches the side wall of the limiting plate 814. Therefore, the hot air discharged downward from the moving hole 8114 drives the rotating shaft 8111 to rotate counterclockwise. When the rotating shaft 8111 rotates, it drives multiple swing plates 8112 to rotate synchronously. The width of the corresponding swing plate 8112 is smaller than the width of the wedge baffle 819. The swing plate 8112 rotates and contacts the limiting plate 814, driving the locking pin 815 and the conical shell 8113 to move laterally. That is, when the lower seat 69 discharges hot air downward, the swing plate 8112 drives the rotating shaft 8111 to rotate counterclockwise. The swing plate 8112 and the side wall of the limiting plate 814 press against each other and drive the locking pin 815 and the conical shell 8113 to move laterally back and forth.

[0056] In use, the transformer is first assembled according to the above process. In the initial case, when the locking pin 815 and the conical shell 8113 are engaged with the limiting hole 84, the end of the conical shell 8113 engages with the limiting hole 84 inside the lower locking plate 83 and moves upward to the maximum distance. The lower locking plate 83 moves upward and applies downward pressure to the bottom of the annular storage tube 71 to the maximum value, causing it to squeeze the internal magnetic fluid. The magnetic fluid flows and is stored in the cavity 64 along the insertion joint 72 and the sleeve joint 66. Then, the magnetic fluid inside the cavity 64 magnetically shields the transformer body 3, effectively improving the working magnetic stability of the transformer body 3.

[0057] To prevent the magnetic fluid inside cavity 64 from settling due to prolonged stagnation, the drive component 856 can be replaced with a motor drive, with one end of the motor fixed to the support leg 4. The motor periodically starts and, through the disassembly / assembly module 85, drives the slider 813 to move laterally back and forth inside the guide rail 811. Simultaneously, the slider 813, through the elastic element 816 and the limiting plate 814, drives the locking pin 815 and the conical shell 8113 to move laterally inside the limiting hole 84. The conical shell 8113 continuously forms a wedge structure with the limiting hole 84 inside the lower locking plate 83, causing the lower locking plate 83 to move up and down. Simultaneously, the pressure applied by the lower locking plate 83 to the bottom of the annular storage tube 71 continuously changes, causing its internal volume to change. Under the pressure inside the annular storage tube 71, the magnetic fluid inside the annular storage tube 71 flows continuously with the cavity 64 along the insertion joint 72 and the sleeve joint 66. This effectively prevents the magnetic fluid inside the cavity 64 from remaining static for a long time and reducing its magnetic shielding effect on the transformer body 3. This process can work regularly regardless of the external temperature, making it more adaptable and controllable. In addition, the pressure change of the lower clamping plate 83 on the annular storage tube 71, the reciprocating insertion and connection of the insertion joint 72 and the sleeve joint 66, and the flow of the magnetic fluid prevent the two from remaining static for a long time, which would affect the fluidity inside and thus affect the subsequent injection of magnetic fluid into the cavity 64.

[0058] Subsequently, when the temperature of the transformer body 3 rises, the exhaust fan 671 starts and introduces outside air into the air inlet bend 672 through the ventilation sleeve 673, and further into the inner shield 62 to cool the transformer body 3. At the same time, the air inside the inner shield 62 continuously increases in temperature after heat exchange with the transformer body 3 and is continuously discharged through the one-way exhaust valves 610 inside the multiple lower seats 69, thereby achieving efficient airflow cooling of the transformer body 3.

[0059] The hot air discharged downwards along the lower seat 69 is partially discharged directly through the pressure relief hole 817, while the remaining hot air is discharged downwards through the moving hole 8114. The hot air discharged through the moving hole 8114 is directly opposite the swing plate 8112, causing it to drive the rotating shaft 8111 to rotate counterclockwise. The swing plate 8112 simultaneously pushes the limiting plate 814 to stretch the elastic element 816 towards the end closer to the upper clamping plate 82. The limiting plate 814 simultaneously drives the locking pin 815 and the conical shell 8113 to move along the limiting hole 84. With the help of the inclined structure of the conical shell 8113 itself, the lower clamping plate 83 moves downwards, reducing the squeezing force applied by the lower clamping plate 83 to the bottom of the annular storage tube 71. As a result, the internal volume of the annular storage tube 71 increases and the pressure decreases. Therefore, under this negative pressure, the magnetic fluid inside the cavity 64 is driven downwards along the sleeve joint 6. The fluid flows back to the annular storage tube 71 through the sleeve joint 66 and the insertion joint 72. Simultaneously, when the swing plate 8112 continues to rotate and disengages from the limiting plate 814, the limiting plate 814 moves in the opposite direction to return to its original position under the elastic force of the elastic element 816. The limiting plate 814 then simultaneously drives the locking pin 815 and the conical shell 8113 to move in the opposite direction to return to their original positions. The conical shell 8113 then presses against the limiting hole 84 inside the lower locking plate 83 and drives the lower locking plate 83 to move upward. The lower locking plate 83 presses against the bottom of the annular storage tube 71 and causes it to undergo elastic deformation. The magnetic fluid inside the annular storage tube 71 flows back to the cavity 64 through the sleeve joint 66 and the insertion joint 72, thereby realizing the reciprocating flow of the magnetic fluid and preventing it from settling and affecting its normal magnetic shielding effect.

[0060] When the temperature of the hot air rises, the expansion body 818 inside the pressure relief hole 817 expands due to heat and drives the wedge baffle 819 to move closer to the slider 813. The blocking area of ​​the pressure relief hole 817 by the wedge baffle 819 decreases, and the opening area of ​​the pressure relief hole 817 increases. As the wedge baffle 819 moves, the area of ​​the moving hole 8114 decreases, and the opening area of ​​the pressure relief hole 817 is greater than the blocking area of ​​the moving hole 8114. Consequently, the amount of hot air discharged from the lower seat 69 along the one-way exhaust valve 610 increases, further achieving the effect of fixed-point cooling of the transformer body 3 and avoiding uneven temperature of the transformer body 3, which would reduce the subsequent normal operation effect.

[0061] Meanwhile, if the temperature rises at a certain location in the transformer body 3, the fluidity of the magnetic fluid inside the cavity 64 at the corresponding location in the transformer body 3 will increase. Therefore, it is necessary to appropriately reduce the driving force of the magnetic fluid at that location to avoid the magnetic fluid being strongly stirred and affecting its magnetic shielding effect.

[0062] Therefore, when the expander 818 expands and drives the wedge baffle 819 to move, the wedge baffle 819 synchronously drives the rotating shaft 8111 and the swing plate 8112 to move via the mounting plate 8110. The distance between the wedge baffle 819 and the slider 813 decreases, and the distance between the rotating shaft 8111 and the limiting disk 814 increases. The area blocked by the wedge baffle 819 in the moving hole 8114 increases, thus reducing the amount of hot air discharged downward from the moving hole 8114. This hot air acts on the swing plate 8112 and drives the multiple swing plates 8112 and the rotating shaft 8111 to rotate counterclockwise at a reduced rate. Therefore, during the rotation of the swing plate 8112, it interacts with the side wall of the limiting disk 814. When the compression contact occurs, the movement distance of the limiting plate 814 and the elastic element 816 decreases. The limiting plate 814 correspondingly causes the locking pin 815 and the conical shell 8113 to move a shorter distance inside the limiting hole 84. Therefore, under the action of the weight of the lower locking plate 83, it cooperates with the conical shell 8113 and moves downward a shorter distance. The thrust applied by the lower locking plate 83 to the bottom of the annular storage tube 71 decreases. As a result, the amount of magnetic fluid inside the cavity 64 flowing back to the annular storage tube 71 between the sleeve joint 66 and the insertion joint 72 decreases. This prevents the magnetic fluid inside the cavity 64 from having an increased driving force and excessive stirring due to the increased temperature, which would affect the subsequent normal magnetic shielding effect.

[0063] When the swing plate 8112 disengages from the counterclockwise push of the limiting plate 814, the elastic force of the elastic element 816 causes the locking pin 815 and the conical shell 8113 to move in the opposite direction to return to their original positions. Then, the locking pin 815 and the conical shell 8113 slide and engage with the limiting hole 84, causing the lower locking plate 83 to move upward to return to its original position. The lower locking plate 83 simultaneously applies a squeezing force to the bottom of the annular storage tube 71, causing the magnetic fluid inside to flow upward along the sleeve joint 66 and the insertion joint 72 back into the cavity 64. In conjunction with the rotating shaft 8111, the swing plate 8112 continuously reciprocates counterclockwise, further realizing the reciprocating flow of magnetic fluid between the cavity 64 and the annular storage tube 71. The higher the temperature, the smaller the flow rate, further preventing the magnetic fluid inside the cavity 64 from settling and affecting the magnetic shielding effect on the transformer body 3.

[0064] Similarly, when the temperature of the hot air inside the pressure relief hole 817 decreases, the expansion body 818 drives the wedge-shaped baffle 819 to move away from the slider 813. The blocking area of ​​the wedge-shaped baffle 819 on the pressure relief hole 817 increases, and the amount of hot air discharged downward from the lower seat 69 decreases accordingly, improving the fixed-point cooling effect. At the same time, the wedge-shaped baffle 819 drives the rotating shaft 8111 and the swing plate 8112 to move closer to the limit plate 814 through the mounting plate 8110. The multiple swing plates 8112 rotate counterclockwise under the action of the hot air discharged downward from the moving hole 8114. The swing plates 8112... The lateral movement distance of the tensioning elastic element 816 of the limiting plate 814 should increase. Simultaneously, the limiting plate 814 drives the locking pin 815 and the conical shell 8113 to move laterally along the limiting hole 84, thus increasing the vertical movement distance of the lower locking plate 83. The vertical deformation of the annular storage tube 71 caused by the lower locking plate 83 increases. Under the action of this extrusion force, the flow of the magnetic fluid inside the annular storage tube 71 and the cavity 64 increases, further preventing the magnetic fluid from reducing its own fluidity and causing sedimentation when the temperature drops, thus affecting the magnetic shielding effect. This makes it more adaptable and provides a better magnetic shielding effect.

[0065] Once the transformer body 3 has cooled down, the exhaust fan 671 is turned off, all components stop working, and the transformer can continue to operate normally as described above.

[0066] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A transformer, characterized by The transformer includes a base plate (2), a transformer body (3), a shielding mechanism (6), a supply mechanism (7), and a mounting mechanism (8). The shielding mechanism (6) is arranged on the top of the base plate (1) and covers the transformer body (3) to form an outer shielding. The shielding mechanism (6) includes an inner shielding cover (62) and an outer shielding cover (63), and a cavity (64) is formed between the inner shielding cover (62) and the outer shielding cover (63). The supply mechanism (7) is arranged on the bottom of the base plate (1) and includes a ring-shaped storage tube (71) for storing magnetic fluid and supplying the magnetic fluid to the shielding mechanism (6). The mounting mechanism (8) is arranged on the bottom of the base plate (1) and is used for clamping and positioning the supply mechanism (7) and the shielding mechanism (6) and adjusting the flow of the magnetic fluid in the cavity (64). The mounting mechanism (8) includes a plurality of limiting modules (81). When the temperature of the hot air discharged downward from the inner shielding cover (62) decreases, the moving amount of the limiting module (81) increases, the deformation amount of the ring-shaped storage tube (71) increases, and the flow amount of the magnetic fluid between the ring-shaped storage tube (71) and the cavity (64) increases.

2. A transformer according to claim 1, characterised in that The base plate (2) is fixedly installed on the inner side of the base plate (1), the transformer body (3) is fixedly installed on the top of the base plate (2), the bottom of the shielding mechanism (6) passes through the base plate (1), the top output end of the supply mechanism (7) is connected with the bottom input end of the shielding mechanism (6), the upper end of the supply mechanism (7) is clamped with the mounting mechanism (8), the bottom end of the shielding mechanism (6) passes through the base plate (1) and is clamped with the mounting mechanism (8), and the limiting modules (81) are fixedly connected to the bottom of the base plate (2) in a ring-shaped arrangement.

3. A transformer according to claim 1, characterized in that The shielding mechanism (6) further includes: The square box seat (61) is arranged on the top outer side edge of the base plate (1), the top inner side edge of the square box seat (61) is fixedly connected with the inner shielding cover (62), the top outer side edge of the square box seat (61) is fixedly connected with the outer shielding cover (63), a copper foil layer is arranged in the cavity (64), the upper ends of the inner shielding cover (62) and the outer shielding cover (63) are arranged in a conical shape, the inner shielding cover (62) and the outer shielding cover (63) are used for covering the shielding transformer body (3), the cavity (64) is used for accommodating the magnetic fluid to flow to the area with strong magnetic field when the transformer body (3) generates a magnetic field, the inner shielding cover (62) covers the outer side of the transformer body (3), and the bottom inner side edge of the square box seat (61) is sealed with the base plate (2) through a sealing pad; The communication bucket (65) is fixedly installed on the bottom of the square box seat (61) in a ring-shaped arrangement, the top of the communication bucket (65) is connected with the inner bottom of the cavity (64), and the bottom of the communication bucket (65) is provided with a sleeving connector (66) for sleeving the supply mechanism (7); The ventilation module (67) is fixedly installed on the top of the inner shielding cover (62) and the outer shielding cover (63), the bottom of the ventilation module (67) is connected with the inner cavity of the inner shielding cover (62), and the ventilation module (67) is used for ventilating, dissipating heat, and dehumidifying the gap of the inner shielding cover (62) accommodating the transformer body (3).

4. A transformer according to claim 3, characterised in that The ventilation module (67) comprises: An exhaust fan (671) fixedly installed at the top of the inner shield cover (62) and the outer shield cover (63), the bottom of the exhaust fan (671) being in communication with the inner cavity of the inner shield cover (62), the top of the exhaust fan (671) being fixedly installed with an air inlet elbow (672), the outer end of the air inlet elbow (672) being fixedly installed with an air exchange sleeve (673); Shielding plates (674) fixedly installed at the inner part of the air exchange sleeve (673) in an equidistant and spiral arrangement; Sound-absorbing plates (675) fixedly installed on one side of the shielding plates (674) close to the exhaust fan (671).

5. A transformer according to claim 4, characterised in that The shielding mechanism (6) further comprises: A closing module (68) fixedly installed at the output end of the ventilation module (67), the ventilation module (67) covering and sealing the ventilation module (67) when the transformer body (3) does not need to be ventilated and cooled; A lower discharge seat (69) fixedly installed at the inner part of the base plate (2), the bottom end of the lower discharge seat (69) penetrating through the base plate (2) and being in communication with the outside, the inner part of the lower discharge seat (69) being fixedly installed with a one-way exhaust valve (610), the output end of the one-way exhaust valve (610) being arranged at the bottom output end of the lower discharge seat (69), the input end of the one-way exhaust valve (610) being in communication with the space containing the transformer body (3) in the inner shield cover (62), the one-way exhaust valve (610) being used for one-way exhaust when ventilation and air exchange are needed.

6. A transformer according to claim 3, characterised in that An annular storage tube (71) is arranged at the bottom of the rack (1), the top of the annular storage tube (71) being fixedly installed with plug-in connectors (72) in an equidistant and annular arrangement, the top end of the plug-in connectors (72) being plugged into the inner part of the sleeving connector (66), the top end outer surface of the plug-in connectors (72) and the inner part of the sleeving connector (66) being provided with matching sealing gaskets, the magnetic fluid in the inner part of the annular storage tube (71) being a nanometer ferrite-based magnetic fluid, the annular storage tube (71) being in communication with the cavity (64) through the plug-in connectors (72) cooperating with the sleeving connector (66).

7. A transformer as claimed in claim 5, characterised in that The installation mechanism (8) further comprises: An upper clamping plate (82) fixedly installed at the lower end of the side close to the base plate (2) of the communication bucket (65) in an equidistant and annular arrangement, A lower clamping plate (83) fixedly installed at the top of the annular storage tube (71) in an equidistant and annular arrangement, the lower end of the upper clamping plate (82) and the upper end of the upper clamping plate (82) being provided with limiting holes (84), the upper clamping plate (82) being clamped to the limiting module (81) through the limiting hole (84) at the lower end, the upper clamping plate (82) being clamped to the limiting module (81) to realize the positioning and installation of the shielding mechanism (6), the upper clamping plate (82) being clamped to the limiting module (81) through the limiting hole (84) at the upper end, the upper clamping plate (82) being clamped to the limiting module (81) to realize the positioning and installation of the supply module; A disassembly and assembly module (85) rotatably installed at the middle of the bottom of the base plate (2), the outer end of the disassembly and assembly module (85) being linked to the bottom of each limiting module (81), the disassembly and assembly module (85) being used for disassembling and assembling the shielding mechanism (6) and the supply mechanism (7).

8. A transformer according to claim 7, characterised in that The limiting module (81) comprises: A guide rail (811) is fixedly arranged on the bottom of the base plate (2) in a ring shape at equal intervals, the inside of the guide rail (811) is fixedly connected with a reset member (812), the outer end of the reset member (812) is fixedly arranged with a sliding block (813), the sliding block (813) is slidingly connected to the inside of the guide rail (811), the inside of the guide rail (811) is in communication with the lower part of the lower row seat (69), the bottom of the sliding block (813) is movably connected with a limiting disc (814) through an elastic member (816), the other side of the limiting disc (814) is fixedly arranged with a pin (815), the upper part of the pin (815) is fixedly connected with a conical shell (8113), the height value of the conical shell (8113) gradually increases from one end to the other end of the limiting disc (814), the pin (815) and the conical shell (8113) both penetrate through the limiting holes (84) in the inside of the lower clamping plate (83) and the upper clamping plate (82); A pressure relief hole (817) is arranged on one side of the guide rail (811) and corresponds to the lower row seat (69), the hot air discharged downward from the lower row seat (69) is discharged along the pressure relief hole (817).

9. A transformer according to claim 8, characterised in that The limiting module (81) comprises: An expansion body (818) is movably connected to the inside of the pressure relief hole (817), the end of the expansion body (818) is fixedly connected with a wedge-shaped baffle (819), the height value of the wedge-shaped baffle (819) gradually increases from one end to the other end of the expansion body (818), when the temperature value discharged from the lower part of the annular seat (69) increases, the volume of the expansion body (818) increases and drives the wedge-shaped baffle (819) to move, the air discharge area of the pressure relief hole (817) increases; A moving hole (8114) is arranged in the inside of the guide rail (811), the width value of the moving hole (8114) is smaller than the width value of the pressure relief hole (817), the wedge-shaped baffle (819) moves the same distance, the area change amount of the pressure relief hole (817) is greater than the area change amount of the moving hole (8114), the wedge-shaped baffle (819) is rotatably connected with a rotating shaft (8111) through a mounting plate (8110) below, the outer surface of the rotating shaft (8111) is uniformly fixedly connected with a plurality of swing plates (8112), the end of the swing plate (8112) is matched with the side wall of the limiting disc (814), the swing plate (8112) is in contact with the limiting disc (814) and drives the pin (815) and the conical shell (8113) to move horizontally in the limiting hole (84).

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