Power Electronic Transformer

Abstract

The invention discloses a power electronic transformer, comprising a transformer end shell, wherein the right end of the transformer end shell is fixedly connected with a wire plug end, a wire plug hole is opened on the side of the wire plug end, a wire board is fixedly connected to the right inner wall of the transformer end shell, a lower pressure block is arranged above the wire board, a pressure line is fixedly connected to the bottom surface of the lower pressure block, a sliding vertical rod is fixedly connected to the top surface of the lower pressure block, an elastic spring is arranged on the outer side of the sliding vertical rod, a connecting rod buckle piece is slidably connected to the outer side of the sliding vertical rod, and an extrusion spring piece is fixedly connected to the top end of the sliding vertical rod. The invention has the characteristics of strong practicability and easy to clean dust to prevent the heat dissipation structure from being affected.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, in particular to a power electronic transformer. Background Art

[0002] Although power transformers have the advantages of small size, light weight and high efficiency, their core coil part is easily interfered by external electromagnetic signals, and the dust attached to the surface of the shielding cover will also affect its own heat dissipation effect. The internal structure is also easily affected by moisture and the normal operation of the internal circuit.

[0003] The invention patent with application number CN201210585705.5 discloses an electronic transformer, including a coil frame with winding terminals and a magnetic core mounted on the coil frame, characterized in that: the electronic transformer also includes an insulating isolation cover with an opening; the cover body of the isolation cover is covered on the exposed surface of the magnetic core, and the coil frame is partially exposed from the opening of the isolation cover, and the winding terminal is arranged at the exposed part of the coil frame. The invention is small in size and simple in manufacturing process, and can ensure sufficient electrical safety distance between the magnetic core and the winding terminal and between the transformer and other electronic devices on the PCB substrate. However, this device has the problem of overheating and damage of the line due to overload of the current in the access line. Therefore, it is very necessary to design a power electronic transformer with strong practicality and clean dust to prevent the heat dissipation structure from being affected. Summary of the invention

[0004] The object of the present invention is to provide a power electronic transformer to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a power electronic transformer, comprising a transformer end shell, the right end of the transformer end shell is fixedly connected with a plug-in terminal, the side of the plug-in terminal is provided with a plug-in hole, the right inner wall of the transformer end shell is fixedly connected with a wire board, a lower pressing block is arranged above the wire board, the bottom surface of the lower pressing block is fixedly connected with a pressing line, the top surface of the lower pressing block is fixedly connected with a sliding vertical rod, the outer side of the sliding vertical rod is provided with an elastic spring, the outer side of the sliding vertical rod is slidably connected with a connecting rod buckle piece, the top side end of the sliding vertical rod is fixedly connected with an extrusion spring piece, an electromagnetic coil is arranged below the middle position of the bottom surface of the connecting rod buckle piece, the top side surface of the transformer end shell is fixedly connected with a ventilation filter, the angle between the wire board and the horizontal line is less than sixty degrees and greater than twenty degrees, the sliding vertical rod is slidably connected with an extension plate arranged on the inner wall of the transformer end shell, the top of the elastic spring is fixedly connected with the connecting rod buckle piece, the electromagnetic coil is fixedly connected with the transformer end shell, and the bottom surface of the connecting rod buckle piece An iron core block is fixedly connected in the middle position. Through the above structure, the connecting wire is first inserted into the wire insertion hole on the side of the wire insertion end, and the wire insertion hole is moved in the guide of the wire plate, and the lower pressing block is pushed upward by the wire head, and the wire head is partially pressed by the pressing line on the bottom side of the lower pressing block. At the same time, the lower pressing block moves upward to drive the sliding vertical rod to move upward, and then the extrusion spring sheet at the top of the sliding vertical rod moves upward and squeezes the side of the connecting rod buckle sheet, so that the extrusion spring sheet is deformed, and the extrusion spring sheet moves across the top surface of the connecting rod buckle sheet in an extruded state, and then through the extrusion The compression spring piece contacts the connecting rod buckle piece to achieve power-on, and the energized circuit is connected in series with the electromagnetic coil. When the voltage in the access circuit is overloaded, the current in the circuit increases, and then the current passing through the electromagnetic coil increases, and then the magnetism of the electromagnetic coil is enhanced, and the connecting rod buckle piece is attracted by magnetism, so that the connecting rod buckle piece moves downward, and then the top end of the connecting rod buckle piece is in contact with the compression spring piece, and is squeezed by the edge of the extension plate on the inner wall of the transformer end shell, so that the top end of the connecting rod buckle piece is separated from the compression spring piece, and is pulled under the action of the elastic force of the elastic spring, so that the circuit is in a disconnected state.

[0006] According to the above technical solution, a cleaning device is provided inside the transformer end shell, and the cleaning device includes a shielding ring cover, and both sides of the shielding ring cover are fixedly connected with a fixed cover ring, and the left side of the fixed cover ring is rotatably connected with a reciprocating screw rod, and a small motor is fixedly connected to the axis of the rear end of the reciprocating screw rod, and the outer side of the reciprocating screw rod is threadedly connected with a brush ring plate, and the front edge of the brush ring plate is fixedly connected with a vibrating bead, and the right side of the fixed cover ring is fixedly connected with an auxiliary sliding rod, and the auxiliary sliding rod is fixedly connected to the brush ring plate, and the small motor is fixedly connected to the transformer end shell, and the surface of the shielding ring cover is provided with a plurality of equidistant arrays The arc plate through holes are distributed, and the vibration beads correspond to the positions of the arc plate through holes. Through the above structure, when the whole is in the passage and normal operation state, the small motor rotates to drive the reciprocating screw to rotate, and the brush ring plate outside the reciprocating screw is moved back and forth through the rotation of the reciprocating screw, and the surface of the shielding ring cover is cleaned by movement to prevent dust from affecting the shielding effect of the shielding ring cover. At the same time, the brush ring plate moves and drives the vibration beads to move at the same time, so that the vibration beads pass through the arc plate through holes, and the arc plate through holes are moved by the vibration beads to make the shielding ring cover vibrate, so that the dust or condensed moisture on the surface of the shielding ring cover is removed by vibration.

[0007] According to the above technical solution, a moisture-proof device is arranged on the side of the fixed cover ring, and the moisture-proof device includes a moisture-proof cotton block, and a transformer coil is arranged on the side of the moisture-proof cotton block. A shielding transverse tube is fixedly connected to the inner side of the shielding ring cover, and a sparse hole block is fixedly connected to the ground of the moisture-proof cotton block, and downwind ducts are arranged on both sides of the sparse hole block. A support bar is fixedly connected to the bottom surface of the transformer end shell, and the moisture-proof cotton block is elliptical in shape, and the cross-sectional shape of the shielding transverse tube is semicircular. The ends of both sides of the shielding transverse tube are immersed in the interior of the moisture-proof cotton block, and the sparse hole block penetrates to the bottom of the transformer end shell, and a sparse hole block is provided on the side. The holes that run through the whole body, through the above structure, part of the moist condensed water will be cleaned by the brush ring plate and enter the arc plate through hole along with the dust, and the vibration will promote the movement of dust mixed with condensed water vapor, and enter the shielding cross tube through the arc plate through hole, and cool the internal structure of the shielding ring cover through the water vapor in the shielding cross tube, and at the same time, the condensed water droplets will gather through vibration, and the gathered condensation will enter the moisture-proof cotton block, and the dust will be separated from the gathered water through the moisture-proof cotton block, and the water will move downward through the loose holes of the moisture-proof cotton block and move to the sparse hole block. Since the holes of the sparse hole block are larger than the inner holes of the moisture-proof cotton block, part of the water in the sparse hole block will be dried by the airflow passing through the downwind duct.

[0008] According to the above technical scheme, an anti-fall device is arranged above the shielding ring cover, and the anti-fall device includes a wire-fixing rubber plate, and the bottom sides of the front and rear ends of the wire-fixing rubber plate are fixedly connected with a fixing plate, and a fixed wire groove is opened on the surface of the wire-fixing rubber plate, and the inner side surface of the wire-fixing rubber plate is fixedly connected with a force transmission fixed rod, and the top of the force transmission fixed rod is fixedly connected with a buffer spring, the force transmission fixed rod is fixedly connected to the fixing plate, and the fixing plate is fixedly connected to the moisture-proof cotton block, and the side shape of the buffer spring is arc-shaped. Through the above structure, when the whole device collides with the device and the transformer end shell falls off from the inside of the device, the wire groove is fixed on the surface of the wire-fixing rubber plate, and the internal connecting wire is fixed, which can prevent the wire head from falling off and being damaged due to vibration. At the same time, even if the wire-fixing rubber plate is under pressure, it can buffer the force by deforming and squeezing the buffer spring, and the buffer spring transmits force from the middle to the two ends, transmits the force to the force transmission fixed rod and the fixing plate, and eliminates the force through vibration and deformation of the fixing plate and the moisture-proof cotton block.

[0009] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0010] The present invention is provided with a wire insertion hole, a wire plate, a lower pressure block, a pressure bar, a sliding vertical rod, an elastic spring, an extrusion spring sheet, a connecting rod buckle sheet, and an electromagnetic coil. When the wire is inserted, the wire head is fixed by the wire insertion structure, and the wire insertion trigger circuit protection structure is in a pass state, which can play a protective role when the voltage is overloaded.

[0011] The present invention is provided with a shielding ring cover, a fixing shield ring, a reciprocating screw, a brush ring plate, a small motor, an arc plate through hole, and a vibrating bead, so that the dust or condensed moisture on the surface of the shielding ring cover can be cleaned, and then the dust on the surface of the shielding structure can be cleaned by a vibrating structure to prevent the shielding and heat dissipation effects from being affected.

[0012] The present invention is provided with moisture-proof cotton blocks, transformer coils, shielding cross pipes, downwind ducts, support bars, and porous blocks. It collects condensed moisture to cool the structure, and at the same time, utilizes the structure to absorb moisture condensation water and discharges it through air drying, thereby achieving the effects of moisture-proofing and accelerating air drying.

[0013] The present invention is provided with a wire fixing rubber plate, a fixed wire groove, a force transmission rod, a buffer spring and a fixed plate. The force is buffered by deforming and squeezing the buffer spring. The buffer spring transmits force from the middle to both ends, and transmits the force to the force transmission rod and the fixed plate. The fixed plate and the moisture-proof cotton block vibrate and deform to dissipate the force, thereby reducing the force of bumps and squeezing for buffering and protecting the normal operation of internal components. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall front three-dimensional structure of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the plug-in terminal of the present invention;

[0017] Figure 3 It is a schematic diagram of the structure inside the transformer end shell of the present invention;

[0018] Figure 4 The present invention Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0019] Figure 5 It is a schematic structural diagram of the moisture-proof device of the present invention;

[0020] Figure 6 It is a structural schematic diagram of the anti-fall device of the present invention;

[0021] In the figure: 1. Transformer end shell; 2. Plug-in terminal; 3. Plug-in hole; 4. Wire board; 5. Cleaning device; 51. Shielding ring cover; 52. Fixed cover ring; 53. Reciprocating screw rod; 54. Brush ring plate; 55. Small motor; 56. Arc plate through hole; 57. Vibrating bead; 510. Moisture-proof device; 511. Moisture-proof cotton block; 512. Transformer coil; 513. Shielding horizontal pipe; 514. Downwind duct; 515. Support bar; 516. Hole block; 6. Lower pressure block; 7. Pressure line; 8. Anti-fall device; 81. Wire fixing rubber plate; 82. Fixed wire groove; 83. Force transmission fixing rod; 84. Buffer spring; 85. Fixed plate; 9. Sliding vertical rod; 10. Elastic spring; 11. Extrusion spring; 12. Connecting rod buckle; 13. Electromagnetic coil; 14. Ventilation filter. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-6The present invention provides a technical solution: a power electronic transformer, comprising a transformer end shell 1, a plug-in terminal 2 is fixedly connected to the right end of the transformer end shell 1, a plug-in hole 3 is opened on the side of the plug-in terminal 2, a wire board 4 is fixedly connected to the right inner wall of the transformer end shell 1, a lower pressing block 6 is arranged above the wire board 4, a pressing line 7 is fixedly connected to the bottom surface of the lower pressing block 6, a sliding vertical rod 9 is fixedly connected to the top surface of the lower pressing block 6, an elastic spring 10 is arranged on the outer side of the sliding vertical rod 9, a connecting rod buckle 12 is slidably connected to the outer side of the sliding vertical rod 9, an extrusion spring 11 is fixedly connected to the top end of the sliding vertical rod 9, and a connecting rod buckle 12 is slidably connected to the outer side of the sliding vertical rod 9. An electromagnetic coil 13 is arranged below the middle position of the bottom surface of the rod buckle 12, a ventilation filter 14 is fixedly connected to the top side of the transformer end shell 1, the angle between the wire plate 4 and the horizontal line is less than sixty degrees and greater than twenty degrees, the sliding vertical rod 9 is slidably connected to the extension plate arranged on the inner wall of the transformer end shell 1, the top of the elastic spring 10 is fixedly connected to the connecting rod buckle 12, the electromagnetic coil 13 is fixedly connected to the transformer end shell 1, and the middle position of the bottom surface of the connecting rod buckle 12 is fixedly connected to the iron core block. Through the above structure, first insert the connecting wire into the wire insertion hole 3 on the side of the plug-in end 2, and let the wire insertion hole 3 be guided in the guide of the wire plate 4. The pressing block 6 is moved upward, and the pressing line 7 on the bottom side of the pressing block 6 is used to press the thread end part. At the same time, the pressing block 6 moves upward to drive the sliding vertical rod 9 to move upward, so that the extrusion spring 11 at the top of the sliding vertical rod 9 moves upward and squeezes the side of the connecting rod buckle 12, so that the extrusion spring 11 is deformed, and the extrusion spring 11 moves across the top surface of the connecting rod buckle 12 in an extruded state, and then the extrusion spring 11 is in contact with the connecting rod buckle 12 to realize power-on. The electromagnetic coil 13 is connected in series to the power-on circuit. When the voltage in the access circuit is overloaded, the current in the circuit increases. Then the current passing through the electromagnetic coil 13 is increased, and the magnetism of the electromagnetic coil 13 is enhanced. The connecting rod buckle 12 is attracted by magnetism, and the connecting rod buckle 12 is moved downward, so that the top end of the connecting rod buckle 12 is in contact with the extrusion spring 11, and is squeezed by the edge of the extension plate on the inner wall of the transformer end shell 1, so that the top end of the connecting rod buckle 12 is separated from the extrusion spring 11 and is pulled down by the elastic force of the elastic spring 10, so that the line is in a disconnected state. The plug-in structure is used to fix the wire head when plugging in the wire, and the plug-in trigger circuit protection structure is in a pass state, which can play a protective role in the event of overload voltage.

[0024] A cleaning device 5 is provided inside the transformer end shell 1, and the cleaning device 5 comprises a shielding ring cover 51, and both sides of the shielding ring cover 51 are fixedly connected with a fixed cover ring 52, and the left side of the fixed cover ring 52 is rotatably connected with a reciprocating screw rod 53, and a small motor 55 is fixedly connected to the axis of the rear end of the reciprocating screw rod 53, and the outer side of the reciprocating screw rod 53 is threadedly connected with a brush ring plate 54, and the front edge of the brush ring plate 54 is fixedly connected with a vibrating bead 57, and the right side of the fixed cover ring 52 is fixedly connected with an auxiliary sliding rod, and the auxiliary sliding rod and the brush ring plate 54, the small motor 55 and the transformer end shell 1 are fixedly connected, and a plurality of arc plate through holes 56 distributed in an equidistant array are provided on the surface of the shielding ring cover 51, and the vibrating bead 57 corresponds to the position of the arc plate through hole 56. Through the above structure, when the whole is in the passage and normal operation state, the small motor 55 rotates to drive the reciprocating screw 53 to rotate, and the brush ring plate 54 on the outside of the reciprocating screw 53 moves back and forth through the rotation of the reciprocating screw 53, and the surface of the shielding ring cover 51 is cleaned by movement to prevent dust from affecting the shielding effect of the shielding ring cover 51. At the same time, when the brush ring plate 54 moves, it drives the vibration beads 57 to move at the same time, and then the vibration beads 57 pass through the arc plate through hole 56, and the vibration beads 57 are used to move and move the arc plate through hole 56 to make the shielding ring cover 51 vibrate, and the dust or condensed moisture on the surface of the shielding ring cover 51 is removed by vibration, and the dust on the surface of the shielding structure is cleaned by the vibration structure to prevent affecting the shielding and protection effects.

[0025] A moisture-proof device 510 is arranged on the side of the fixed cover ring 52, and the moisture-proof device 510 includes a moisture-proof cotton block 511, and a transformer coil 512 is arranged on the side of the moisture-proof cotton block 511. A shielding transverse pipe 513 is fixedly connected to the inner side of the shielding ring cover 51, and a sparse hole block 516 is fixedly connected to the ground of the moisture-proof cotton block 511. Downwind ducts 514 are arranged on both sides of the sparse hole block 516. A support bar 515 is fixedly connected to the bottom surface of the transformer end shell 1. The moisture-proof cotton block 511 is elliptical in shape, and the cross-sectional shape of the shielding transverse pipe 513 is semicircular. The ends of both sides of the shielding transverse pipe 513 are immersed in the interior of the moisture-proof cotton block 511, and the sparse hole block 516 penetrates to the bottom of the transformer end shell 1, and a hole that penetrates the whole is opened on the side of the sparse hole block 516. Through the above structure, part of the moist condensed water will be washed away by the brush ring plate 54 along with the dust The dust is cleaned and enters the arc plate through hole 56. The vibration will promote the movement of dust mixed with condensed water vapor, and enter the shielding cross tube 513 through the arc plate through hole 56. The internal structure of the shielding ring cover 51 is cooled by the water vapor in the shielding cross tube 513. At the same time, the condensed water droplets are gathered through vibration, and the gathered condensation will enter the moisture-proof cotton block 511, and the dust is separated from the gathered water through the moisture-proof cotton block 511. The water moves downward through the loose holes of the moisture-proof cotton block 511 and moves to the sparse hole block 516. Since the holes of the sparse hole block 516 are larger than the inner holes of the moisture-proof cotton block 511, part of the water in the sparse hole block 516 is dried by the airflow passing through the downwind duct 514. The condensed moisture is collected to cool the structure, and the condensed water is discharged by air drying by absorbing moisture in the structure, thereby achieving the effect of moisture-proof and accelerated air drying.

[0026] An anti-fall device 8 is provided above the shielding ring cover 51, and the anti-fall device 8 includes a fixed wire rubber plate 81, and a fixed plate 85 is fixedly connected to the bottom side of the front and rear ends of the fixed wire rubber plate 81, and a fixed wire groove 82 is provided on the surface of the fixed wire rubber plate 81, and a force transmission rod 83 is fixedly connected to the inner side of the fixed wire rubber plate 81, and a buffer spring 84 is fixedly connected to the top of the force transmission rod 83, and the force transmission rod 83 is fixedly connected to the fixed plate 85, and the fixed plate 85 is fixedly connected to the moisture-proof cotton block 511, and the side shape of the buffer spring 84 is an arc. Through the above structure, when the whole device collides with After the transformer end shell 1 falls off from the inside of the device, the wire groove 82 is fixed on the surface of the wire fixing rubber plate 81, and the internal connecting wire is fixed to prevent the wire ends from falling off and being damaged due to vibration. At the same time, even if the wire fixing rubber plate 81 is under pressure, it can buffer the force by deforming and squeezing the buffer spring 84. The buffer spring 84 transmits force from the middle to the two ends, and transmits the force to the force transmission rod 83 and the fixed plate 85. The fixed plate 85 and the moisture-proof cotton block 511 vibrate and deform to dissipate the force, thereby reducing the force of bumping and squeezing for buffering and protecting the normal operation of the internal components.

[0027] Working principle: First, insert the connecting wire into the wire insertion hole 3 on the side of the wire insertion end 2, let the wire insertion hole 3 move under the guidance of the wire plate 4, and use the wire head to push the lower pressing block 6 upward, and use the pressing line 7 on the bottom side of the lower pressing block 6 to press the wire head part, and at the same time, the lower pressing block 6 moves upward to drive the sliding vertical rod 9 to move upward, and then let the extrusion spring 11 at the top of the sliding vertical rod 9 move upward, and squeeze the side of the connecting rod buckle 12, so that the extrusion spring 11 is deformed, and the extrusion spring 11 moves across the top surface of the connecting rod buckle 12 in an extruded state, and then through the extrusion spring 11 contacts the connecting rod buckle piece 12 to realize power-on, and the energized circuit is connected in series with the electromagnetic coil 13. When the voltage in the access circuit is overloaded, the current in the circuit increases, and then the current passing through the electromagnetic coil 13 increases, and then the magnetism of the electromagnetic coil 13 is enhanced, and the connecting rod buckle piece 12 is attracted by magnetism, so that the connecting rod buckle piece 12 moves downward, and then the top end of the connecting rod buckle piece 12 contacts the extrusion spring piece 11, and is squeezed by the edge of the extension plate on the inner wall of the transformer end shell 1, so that the top end of the connecting rod buckle piece 12 is separated from the extrusion spring piece 11, and is pulled under the elastic force of the elastic spring 10.

[0028] When the whole is in the passage and normal operation state, the small motor 55 rotates to drive the reciprocating screw 53 to rotate, and the brush ring plate 54 on the outside of the reciprocating screw 53 moves back and forth through the rotation of the reciprocating screw 53, and the surface of the shielding ring cover 51 is cleaned by movement to prevent dust from affecting the shielding effect of the shielding ring cover 51. At the same time, when the brush ring plate 54 moves, it drives the vibration beads 57 to move at the same time, and then the vibration beads 57 pass through the arc plate through hole 56, and the vibration beads 57 are used to move the arc plate through hole 56 to make the shielding ring cover 51 vibrate, and the dust or condensed moisture on the surface of the shielding ring cover 51 is removed by vibration.

[0029] Part of the moist condensed water will be cleaned by the brush ring plate 54 and enter the arc plate through hole 56 along with the dust. The vibration will promote the movement of dust mixed with condensed water vapor, and enter the shielding cross tube 513 through the arc plate through hole 56. The internal structure of the shielding ring cover 51 is cooled by the water vapor in the shielding cross tube 513. At the same time, the condensed water droplets are gathered through vibration, and the gathered condensation will enter the moisture-proof cotton block 511, and the dust is separated from the gathered water through the moisture-proof cotton block 511. The water moves downward through the loose holes of the moisture-proof cotton block 511 and moves to the sparse hole block 516. Since the holes of the sparse hole block 516 are larger than the inner holes of the moisture-proof cotton block 511, part of the water in the sparse hole block 516 is dried by the airflow passing through the downwind duct 514.

[0030] When the entire device collides with the transformer end shell 1 and the transformer end shell 1 falls off from the inside of the device, the wire groove 82 is fixed on the surface of the wire fixing rubber plate 81, and the internal connecting wires are fixed to prevent the wire ends from falling off and being damaged due to vibration. At the same time, even if the wire fixing rubber plate 81 is under pressure, it can buffer the force by deforming and squeezing the buffer spring 84.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A power electronic transformer, comprising a transformer end housing (1), characterized in that: The right end of the transformer end shell (1) is fixedly connected to a plug-in terminal (2), a plug-in hole (3) is provided on the side of the plug-in terminal (2), a wire board (4) is fixedly connected to the right inner wall of the transformer end shell (1), a lower pressing block (6) is arranged above the wire board (4), a pressing line (7) is fixedly connected to the bottom surface of the lower pressing block (6), a sliding vertical rod (9) is fixedly connected to the top surface of the lower pressing block (6), an elastic spring (10) is arranged on the outside of the sliding vertical rod (9), a connecting rod buckle (12) is slidably connected to the outside of the sliding vertical rod (9), an extrusion spring (11) is fixedly connected to the top side end of the sliding vertical rod (9), an electromagnetic coil (13) is arranged below the middle position of the bottom surface of the connecting rod buckle (12), and a ventilation filter (14) is fixedly connected to the top side surface of the transformer end shell (1); The angle between the conductor plate (4) and the horizontal line is less than sixty degrees and greater than twenty degrees, the sliding vertical rod (9) is slidably connected to an extension plate provided on the inner wall of the transformer end shell (1), the top end of the elastic spring (10) is fixedly connected to the connecting rod buckle (12), the electromagnetic coil (13) is fixedly connected to the transformer end shell (1), and an iron core block is fixedly connected to the middle position of the bottom surface of the connecting rod buckle (12); A cleaning device (5) is arranged inside the transformer end shell (1), and the cleaning device (5) comprises a shielding ring cover (51), both sides of the shielding ring cover (51) are fixedly connected to a fixed cover ring (52), the left side of the fixed cover ring (52) is rotatably connected to a reciprocating screw rod (53), the rear end axis of the reciprocating screw rod (53) is fixedly connected to a small motor (55), the outer side of the reciprocating screw rod (53) is threadedly connected to a brush ring plate (54), and the front edge of the brush ring plate (54) is fixedly connected to a vibration bead (57); An auxiliary sliding rod is fixedly connected to the right side of the fixed cover ring (52), and the auxiliary sliding rod is connected to the brush ring plate (54); the small motor (55) is fixedly connected to the transformer end shell (1); a plurality of arc plate through holes (56) distributed in an equidistant array are provided on the surface of the shielding ring cover (51); and the vibration beads (57) correspond to the positions of the arc plate through holes (56); A moisture-proof device (510) is provided on the side of the fixed cover ring (52), the moisture-proof device (510) comprises a moisture-proof cotton block (511), a transformer coil (512) is provided on the side of the moisture-proof cotton block (511), a shielding transverse pipe (513) is fixedly connected to the inner side of the shielding ring cover (51), a sparse hole block (516) is fixedly connected to the ground of the moisture-proof cotton block (511), downwind ducts (514) are provided on both sides of the sparse hole block (516), and a support bar (515) is fixedly connected to the bottom surface of the transformer end shell (1); The moisture-proof cotton block (511) is elliptical in shape, and the cross-sectional shape of the shielding transverse tube (513) is semicircular; An anti-fall device (8) is provided above the shielding ring cover (51), the anti-fall device (8) comprising a wire-fixing rubber plate (81), and a fixing plate (85) is fixedly connected to the bottom sides of the front and rear ends of the wire-fixing rubber plate (81).

2. A power electronic transformer according to claim 1, characterized in that: A fixed wire groove (82) is provided on the surface of the wire fixing rubber plate (81), a force transmission rod (83) is fixedly connected to the inner side surface of the wire fixing rubber plate (81), and a buffer spring sheet (84) is fixedly connected to the top end of the force transmission rod (83).

3. A power electronic transformer according to claim 2, characterized in that: The force transmission fixing rod (83) is fixedly connected to the fixing plate (85), the fixing plate (85) is fixedly connected to the moisture-proof cotton block (511), and the side surface shape of the buffer spring sheet (84) is arc-shaped.

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