Rectifier transformer with insulation protection

Abstract

The present invention discloses a rectifier transformer with insulation protection, comprising a transformer body, wherein the top of the transformer body is fixedly connected to a connecting plate, the end of the connecting plate is fixedly connected to a high-voltage column and a low-voltage column connected to the transformer body, and the high-voltage column and the low-voltage column are commonly connected to a support plate; an on-off assembly, the on-off assembly is installed on the support plate and is connected to the high-voltage column and the low-voltage column, and the on-off assembly is used to control the on and off of the high-voltage column and the low-voltage column; a limit assembly, the limit assembly is arranged in cooperation with the on-off assembly, and is used to limit the connection point after the on-off assembly is energized. The present invention realizes automatic on and off of the transformer body by providing the on-off assembly and the limit assembly, so that the transformer body has the function of on and off, so that the on and off of the transformer body can be controlled on site, which solves the problem in the prior art that the transformer body itself does not have the on-off function, resulting in a more troublesome maintenance process.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, in particular to an insulation-protected rectifier transformer. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, secondary coil and iron core (magnetic core). Its main functions include: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc.

[0003] At present, during the use of transformers, the transformers may experience overload, short circuit or voltage anomalies, but the transformers themselves do not have the function of automatic power on and off. In order to protect the safe operation of the transformers and the power system, various protection devices are usually configured to protect the transformers. When overload, short circuit and anomalies occur, the protection devices can automatically cut off the power to the transformer. After maintenance, it is necessary to return to the power control room and close the switch to energize the transformer. However, since it is necessary to return to the control room to close the switch, it is impossible to observe the use of the transformer on site. Therefore, after closing the switch, the maintenance personnel also need to return to the site to observe the use of the transformer to ensure that the transformer can operate normally and stably, which makes the transformer maintenance process more complicated and troublesome. To this end, we propose a rectifier transformer with insulation protection. Summary of the Invention

[0004] The object of the present invention is to provide a rectifier transformer with insulation protection to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rectifier transformer with insulation protection, comprising a transformer body, a connection plate fixedly connected to the top of the transformer body, a high-voltage column and a low-voltage column connected to the transformer body fixedly connected at the end of the connection plate, and a support plate commonly connected to the high-voltage column and the low-voltage column; and further comprising:

[0006] An on-off power component, which is mounted on the support plate and connected to the high-voltage column and the low-voltage column, and is used to control the on and off of the high-voltage column and the low-voltage column;

[0007] A limiting component is provided in cooperation with the on-off component and is used to limit the connection point after the on-off component is energized.

[0008] Preferably, the power on-off assembly includes two sliding columns that are slidably connected to the support plate, and the two sliding columns are symmetrically installed on the support plate. The bottoms of the two sliding columns pass through the support plate, and the tops are commonly connected to the sliding plate. The bottom ends of the sliding plates are fixedly connected to the positions of the high-voltage columns and the low-voltage columns, and the tops of each plug pass through the sliding plate upward and are connected to the terminal. The tops of the high-voltage columns and the low-voltage columns are both connected to sockets that cooperate with the plugs, and a lifting member for driving the sliding plate to rise and fall is installed on the sliding plate.

[0009] Preferably, the lifting member includes a fixed ear plate fixedly connected to the sliding plate, a fixed sleeve is coaxially fixed to the inner side of the fixed ear plate, an extrusion ring is slidably connected to the inside of the fixed sleeve along its axial direction, the bottom end of the extrusion ring is fixedly connected to a threaded tube, a limiting ring for limiting the downward movement of the extrusion ring is formed on the inner wall of the fixed sleeve, a limiting column slidably connected to the extrusion ring is fixedly connected to the limiting ring, the threaded tube passes through the limiting ring and is slidably connected thereto, a reciprocating screw is threadedly connected to the threaded tube, and the bottom end of the reciprocating screw is connected to the output end of the driving member fixed on the connecting plate.

[0010] Preferably, the driving member includes a fixing frame fixed on the connecting plate, a motor is installed on the top of the fixing frame, the output end of the motor is connected to a coupling, and the driving shaft at the end of the coupling passes through the support plate and is fixedly connected to the reciprocating screw.

[0011] Preferably, the limiting assembly includes limiting rods slidably connected to the plurality of plug groups, wherein one end of each limiting rod facing the plug can extend through the plug and into the interior thereof, and the other end facing away from the plug is respectively connected to two connecting rods provided on the support plate;

[0012] The socket is provided with a limiting groove adapted to the limiting rod. When the plug is inserted into the corresponding socket, the limiting rod can pass through the limiting groove and extend into the socket to limit and fix the connection between the plug and the socket.

[0013] An elastic member is installed between the limiting rod and the plug, and the elastic member is used to drive the limiting rod to disengage from the plug.

[0014] Preferably, the elastic member includes a tension spring sleeved on the outside of the limiting rod, one end of the tension spring is connected to a fixing plate fixed on the plug, and the other end is connected to a supporting plate fixed on the limiting rod.

[0015] Preferably, it also includes a moving part for driving the two connecting rods to move synchronously toward or away from each other, the moving part includes a spur gear fixedly connected to the driving shaft, the outer side of the spur gear is engaged with a first rack and a second rack, the first rack and the second rack are centrally symmetrically arranged along the axis of the driving shaft, the ends of the first rack and the second rack facing away from each other are fixedly connected to a fixed plate, and the fixed plate is connected to the corresponding connecting rod through a connecting part.

[0016] Preferably, the connecting member includes a movable column fixedly connected to the connecting rod, the end of the movable column is fixedly connected to an inner sliding rod in the vertical direction, the outside of the inner sliding rod is slidingly sleeved with a sleeve, the bottom end of the sleeve passes through the support plate and is fixedly connected to the corresponding fixed plate, and a sliding sleeve is also fixedly sleeved on the outer circumference of the sleeve, and the upper and lower ends of the sliding sleeve form a limit with the plate surface of the support plate in the vertical direction.

[0017] Preferably, a baffle is installed under the plug, a rotating shaft is connected to one side of the baffle, and fixed seats are fixed to the upper ends of the support plate corresponding to the two ends of the rotating shaft in the length direction, and the rotating shaft is rotatably connected to the fixed seat through a torsion spring.

[0018] Preferably, two groups of symmetrically arranged reinforcement rods are fixedly connected between the connecting rod and the movable column.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention provides an insulation-protected rectifier transformer. During the power-on process, the high-voltage connecting wires and the low-voltage connecting wires are respectively connected to multiple groups of terminal posts. Then, the reciprocating screw is rotated by the action of a driving member. After the reciprocating screw rotates, the rotation of the reciprocating screw drives the threaded tube to move. When the threaded tube moves, the extrusion ring is driven to move. After the extrusion ring moves to fit with the limit ring, the continuous downward movement of the threaded tube drives the fixed sleeve to move through the action of the extrusion ring and the limit ring. The sliding plate is driven to move through the action of the fixed sleeve. The plug is driven to move through the movement of the sliding plate, so that the plug is inserted into the socket, so that the transformer body When the power is on, when the power is off, it is only necessary to control the driving part to continue to operate so that the reciprocating screw continues to rotate. The continued rotation of the reciprocating screw causes the sliding plate to rise and drives the plug to rise. At this time, the plug and the socket are separated, and the transformer body is powered off. In the process of powering on, the limit component limits the plug and the socket to improve stability. Therefore, the transformer body is automatically powered on and off by providing the on-off component and the limit component, so that the transformer body has the function of powering on and off. Therefore, the power on and off of the transformer body can be controlled on site, which solves the problem in the prior art that the transformer body itself does not have the power on and off function, which makes the maintenance process more troublesome. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the power on / off component of the present invention;

[0024] Figure 4 This is a schematic diagram of the lifting member structure of the present invention;

[0025] Figure 5 For the present invention Figure 4 Schematic diagram of the structure of the middle A area;

[0026] Figure 6 This is a schematic diagram of the structure of the limit assembly of the present invention;

[0027] Figure 7 This is a schematic diagram of the local structure of the limit assembly of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the moving part of the present invention;

[0029] Figure 9 For the present invention Figure 8 Schematic diagram of the structure of the middle B area;

[0030] Figure 10 This is a schematic diagram of the plug protection structure of the present invention;

[0031] Figure 11 For the present invention Figure 10 Schematic diagram of the structure of the middle C area.

[0032] In the figure: 1. Transformer body; 2. Connecting plate; 3. High-voltage column; 4. Low-voltage column; 5. Support plate; 6. On / off assembly; 7. Limit assembly; 8. Socket; 9. Plug; 10. Terminal; 11. Sliding column; 12. Sliding plate; 13. Lifting element; 14. Fixing sleeve; 15. Fixing ear plate; 16. Extrusion ring; 17. Threaded pipe; 18. Limiting ring; 19. Reciprocating screw; 20. Driving element; 21. Fixing bracket; 22. Motor; 23. Coupling; 24. Driving shaft 25. Limit rod; 26. Limit groove; 27. Elastic member; 28. Connecting rod; 29. ​​Moving member; 30. Fixed plate; 31. Tension spring; 32. Support plate; 33. Flat gear; 34. First rack; 35. Second rack; 36. Fixed plate; 37. Connecting member; 38. Moving column; 39. Inner sliding rod; 40. Sleeve; 41. Sliding sleeve; 42. Baffle; 43. Rotating shaft; 44. Fixed seat; 45. Torsion spring; 46. Connecting plate; 47. Reinforcement rod; 48. Limit column. DETAILED DESCRIPTION

[0033] The present invention is described in further detail below with reference to the accompanying drawings. The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are intended only as examples, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0034] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate directions or positions are based on the directions or positional relationships shown in the accompanying drawings, which are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limiting the present invention.

[0035] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0036] See also Figures 1-11 This embodiment proposes a rectifier transformer with insulation protection, including a transformer body 1, an on-off power component 6 and a limit component 7. The top of the transformer body 1 is fixedly connected to a connecting plate 2, and the ends of the connecting plate 2 are fixedly connected to a high-voltage column 3 and a low-voltage column 4 connected to the transformer body 1. The high-voltage column 3 and the low-voltage column 4 are commonly connected to a support plate 5; the on-off power component 6 is installed on the support plate 5 and is connected to the high-voltage column 3 and the low-voltage column 4. The on-off power component 6 is used to automatically control the on and off of the high-voltage column 3 and the low-voltage column 4; the limit component 7 is arranged in conjunction with the on-off power component 6, and is used to limit the connection point after the on-off power component 6 is energized, thereby improving stability during power-on.

[0037] Specifically, the power-on / off assembly 6 in the above scheme includes two sliding columns 11 that are slidably connected to the support plate 5. The two sliding columns 11 are symmetrically installed on the support plate 5. The bottoms of the two sliding columns 11 pass through the support plate 5, and the tops are commonly connected to a sliding plate 12. The bottom ends of the sliding plates 12 are fixedly connected to the positions of the high-voltage columns 3 and the low-voltage columns 4 at a plurality of groups of plugs 9. The top of each plug 9 passes through the sliding plate 12 upward and is connected to a terminal 10. The tops of the high-voltage columns 3 and the low-voltage columns 4 are both connected to a socket 8 that cooperates with the plug 9. A lifting member 13 is installed on the sliding plate 12 for driving the sliding plate 12 to rise and fall. The sliding plate 12 is driven to move in the vertical direction by the lifting member 13, so that the plug 9 is inserted into the corresponding socket 8, thereby controlling the power on and off of the transformer body 1.

[0038] During transformer installation, the high-voltage and low-voltage cables are connected to the multiple sets of terminal posts 10. The lifter 13 then moves the sliding plate 12 downward toward the support plate 5, allowing the plug 9 to be inserted into the socket 8 and powering on the transformer 1. If the transformer experiences a fault and loses power, the lifter 13 drives the sliding plate 12 upward, disengaging the plug 9 from the socket 8 and de-energizing the transformer 1.

[0039] The setting of the on-off component 6 can automatically cut off the power supply in the power system of the transformer body 1 due to various faults, such as overload, short circuit, and overheating. The on-off component 6 is controlled by the controller in the transformer body 1. The specific control is as follows:

[0040] Overload detection: The current is monitored by the current transformer in the transformer circuit system. When the current detected by the current transformer is greater than the preset value, it means that the circuit is in an overload state. The controller receives the signal and controls the motor 11 to start. The motor 11 starts to disconnect the socket 8 and the plug 9 from the power supply.

[0041] Short circuit detection: When the power is short-circuited, it means that there is no resistance in the circuit. By monitoring the resistance on the circuit in real time and feeding back the resistance information to the controller, when the resistance is detected to be zero, it means that the circuit is in a short-circuit state. Then the controller controls the motor 11 to start, and the start of the motor 11 causes the socket 8 and the plug 9 to be disconnected from the power supply.

[0042] Overheat detection: The temperature in the circuit is monitored in real time through the temperature sensor, and the temperature signal is fed back to the controller. When the temperature is higher than the rated value, the control system controls the motor 11 to start, and the start of the motor 11 disconnects the socket 8 and the plug 9 from the power supply.

[0043] For the lifting member 13 in the above scheme, it specifically includes a fixed ear plate 15 fixedly connected to the sliding plate 12, a fixed sleeve 14 is coaxially fixed to the inner side of the fixed ear plate 15, an extrusion ring 16 is axially connected to the fixed sleeve 14 for sliding sliding therein, and a threaded tube 17 is fixedly connected to the bottom end of the extrusion ring 16. A limit ring 18 is formed on the inner wall of the fixed sleeve 14 for limiting the downward movement of the extrusion ring 16, and a limit column 48 is fixedly connected to the limit ring 18 and is slidably connected to the extrusion ring 16. The threaded tube 17 passes through the limit ring 18 and is slidably connected thereto. A reciprocating screw 19 is threadedly connected to the inner thread of the threaded tube 17, and the bottom end of the reciprocating screw 19 is connected to the output end of the driving member 20. The reciprocating screw 19 is driven by the driving member 20 to rotate in one direction all the time, and the threaded tube 17 and the reciprocating screw 19 perform linear reciprocating motion inside the fixed sleeve 14 under the action of the threaded cooperation.

[0044] The driving member 20 includes a fixing frame 21 fixed on the connecting plate 2, a motor 22 is installed on the top of the fixing frame 21, the output end of the motor 22 is connected to the coupling 23, and the driving shaft 24 at the end of the coupling 23 passes through the support plate 5 and is fixedly connected to the reciprocating screw 19.

[0045] When the transformer is powered on, the motor 22 is started, and the motor 22 drives the drive shaft 24 to rotate through the coupling 23. The reciprocating screw 19 rotates synchronously with the drive shaft 24. Since the threaded tube 17 and the reciprocating screw 19 are threadedly connected, the rotational movement of the reciprocating screw 19 will be converted into linear movement of the threaded tube 17, and the threaded tube 17 drives the extrusion ring 16 to move downward. When the extrusion ring 16 moves to fit with the limit ring 18, the continued downward movement of the threaded tube 17 will drive the fixed sleeve 14 to move downward synchronously with it, and the sliding plate 12 and the fixed sleeve 14 move downward synchronously. When the threaded tube 17 moves to the bottom end of the reciprocating screw 19, the plug 9 is just inserted into the corresponding socket 8, the transformer body 1 is powered on, and the motor 22 stops working.

[0046] When the transformer needs to be powered off, the motor 22 is restarted. At this time, the reciprocating screw 19 continues to rotate through the rotation of the drive shaft 24. The reciprocating screw 19 drives the threaded tube 17 to move upward, and the threaded tube 17 first slides inside the fixed sleeve 14. When the threaded tube 17 moves upward so that the extrusion ring 16 fits the top of the fixed sleeve 14, the threaded tube 17 and the fixed sleeve 14 move upward synchronously, so that the socket 8 and the plug 9 are separated, and the transformer body 1 is powered off.

[0047] Furthermore, to ensure the reliability of the connection between the socket 8 and the plug 9, this embodiment employs a limit assembly 7 in conjunction with the on-off assembly 6. When the on-off assembly 6 is energized, the limit assembly 7 limits the connection between the socket 8 and the plug 9, ensuring that the two remain connected. Specifically, the limit assembly 7 includes limit rods 25 slidably connected to multiple groups of plugs 9. Each limit rod 25 extends through the plug 9 into its interior at one end facing the plug 9, while its end facing away from the plug 9 is connected to two connecting rods 28 provided on the support plate 5 (the three limit rods 25 corresponding to the high-voltage column 3 are connected to one of the connecting rods 28, and the three limit rods 25 corresponding to the high-voltage column 3 are connected to the other connecting rod 28). The socket 8 is provided with a limit slot 26 adapted to the limit rod 25. When the plug 9 is inserted into the corresponding socket 8, the limit rod 25 can pass through the limit slot 26 and extend into the socket 8, thereby limiting and fixing the connection between the plug 9 and the socket 8. By the synchronous opposite movement of the two connecting rods 28, the six limit rods 25 can be driven to move synchronously toward the inner side of the plug 9. In addition, an elastic member 27 is installed between the limit rod 25 and the plug 9. The elastic member 27 is used to drive the limit rod 25 to disengage from the plug 9, that is, to reset.

[0048] As a preferred embodiment, the elastic member 27 in this embodiment includes a tension spring 31 that is sleeved on the outside of the limiting rod 25, one end of the tension spring 31 is connected to the fixing plate 30 fixed on the plug 9, and the other end is connected to the supporting plate 32 fixed on the limiting rod 25.

[0049] When the transformer is powered on, the two connecting rods 28 move synchronously toward each other. At this time, each limiting rod 25 will move away from the plug 9, and the limiting rod 25 will be separated from the plug 9 to prevent it from being inserted into the socket 8. The tension spring 31 is also gradually stretched. After the plug 9 is inserted into the socket 8, the limiting rod 25 is reset by the reaction of the tension spring 31, so that the limiting rod 25 is inserted into the limiting groove 26 on the socket 8, thereby ensuring a stable connection between the socket 8 and the plug 9 and preventing it from loosening. During the power-off process, the limiting rod 25 is first separated from the socket 8 and the plug 9 by the moving member 29, and then the lifting member 13 operates to drive the plug 9 and the socket 8 to separate.

[0050] In this embodiment, the movement of the two connecting rods 28 toward or away from each other is achieved by the moving part 29, which specifically includes a flat gear 33 fixedly mounted on the drive shaft 24, and the outer side of the flat gear 33 is engaged with a first rack 34 and a second rack 35. The first rack 34 and the second rack 35 are arranged symmetrically along the axis of the drive shaft 24, and the ends of the first rack 34 and the second rack 35 facing away from each other are fixedly connected to a fixed plate 36, and the fixed plate 36 is connected to the corresponding connecting rod 28 through a connecting part 37. The drive shaft 24 is driven to rotate by the motor 22, and the first rack 34 and the second rack 35 are engaged with the flat gear 33 and move toward or away from each other synchronously in the horizontal direction.

[0051] The connecting member 37 includes a movable column 38 fixedly connected to the connecting rod 28. The end of the movable column 38 is fixedly connected to the inner sliding rod 39 in the vertical direction. The outside of the inner sliding rod 39 is slidably sleeved with a sleeve 40. The bottom end of the sleeve 40 passes through the support plate 5 and is fixedly connected to the corresponding fixed plate 36. A sliding sleeve 41 is also fixedly sleeved on the outer circumference of the sleeve 40. The upper and lower ends of the sliding sleeve 41 form a limit in the vertical direction with the plate surface of the support plate 5. When the sliding plate 12 moves in the vertical direction, the inner sliding rod 39 slides relative to the sleeve 40 to cooperate with the movement of the sliding plate 12.

[0052] In addition, this embodiment also has a baffle 42 installed below the plug 9, and a rotating shaft 43 is connected to one side of the baffle 42. Fixed seats 44 are fixed to the upper end of the support plate 5 at both ends of the length direction of the rotating shaft 43. The rotating shaft 43 is rotatably connected to the fixed seat 44 through a torsion spring 45. In the initial state, the baffle 42 is attached to the lower end of the plug 9 to protect it. When the plug 9 moves downward, it will act on the baffle 42 to make the baffle 42 rotate around the rotating shaft 43. When the plug 9 returns to its initial position, the baffle 42 will be reset to the bottom of the plug 9 under the action of the torsion spring.

[0053] Furthermore, two groups of symmetrically arranged reinforcing rods 47 are fixedly connected between the connecting rod 28 and the movable column 38, so as to improve the stability between the connecting rod 28 and the movable column 38, thereby facilitating the pulling of multiple groups of limiting rods 25 to move.

[0054] The present invention proposes a rectifier transformer with insulation protection, and its specific working principle is: when the transformer is energized, the motor 22 is started, and the motor 22 drives the drive shaft 24 to rotate through the coupling 23. The reciprocating screw 19 is threadedly matched with the threaded tube 17, and because the threaded tube 17 is circumferentially limited to each other inside the fixed sleeve 14, the reciprocating screw 19 will drive the threaded tube 17 to move downward along its axial direction inside the fixed sleeve 14 when rotating. The extrusion ring 16 at the top of the threaded tube 17 moves downward to fit with the limit ring 18, and the sliding plate 12 remains fixed. After the extrusion ring 16 fits with the limit ring 18, the continued downward movement of the threaded tube 17 will drive the fixed sleeve 14 to move downward. At this time, the plug 9 on the sliding plate 12 moves downward close to the socket 8. In the process of the extrusion ring 16 moving downward to fit with the limit ring 18, the driving shaft 24 rotates to drive the flat gear 33 to rotate, and the first rack 34 and the second rack 35 are meshed with the flat gear 33 and move closer to each other. Through the action of the fixed plate 36, the sleeve 40, the movable column 38 and the connecting rod 28, the limit rod 25 is driven to extend from the plug 9 (it should be noted that the limit rod 25 is extended into the inside of the plug 9 in the initial state). When the extrusion ring 16 moves downward to fit with the limit ring 18, the The limiting rod 25 extends from the plug 9, preventing it from interfering with its insertion into the socket 8. At this point, the first and second racks 34, 35 also move to their limit position (i.e., the length of movement of the first and second racks 34, 35 coincides with the length of the limiting rod 25 extending into the interior of the plug 9). Thereafter, as the drive shaft 24 continues to rotate, the limiting rod 25 maintains this position, moving downward synchronously with the sliding plate 12. When the threaded tube 17 reaches the bottom of the reciprocating screw 19, the plug 9 is fully inserted into the socket 8. When the transformer body is energized, the motor 22 is de-energized, and the drive shaft 24 is in an unloaded state. At this point, the limiting rod 25, acting under the action of the tension spring 31, inserts into the limiting groove 26, securing the socket 8 and plug 9. During the return of the limiting rod 25, the threaded tube 17 merely slides upward within the fixing sleeve 14 (the extrusion ring 16 disengages the limiting ring 18 and moves toward the top of the fixing sleeve 14), while the fixing sleeve 14 remains stationary, i.e., the socket 8 and plug 9 remain stationary.

[0055] When the equipment needs to be powered off, the starting motor 22 drives the reciprocating screw 19 to rotate. At this time, the threaded tube 17 moves upward relative to the reciprocating screw 19. The threaded tube 17 will first slide upward inside the fixed sleeve 14 to disengage the limit ring 18. During this process, the first rack 34 and the second rack 35 engage with the flat gear 33 again to disengage the limit rod 25 from the plug 9. After the threaded tube 17 moves up to the end of the extrusion ring 16 that fits the fixed sleeve 14, the limit rod 25 just disengages from the plug 9. As the threaded tube 17 continues to move upward, the sliding plate 12 and the plug 9 move upward synchronously, and the plug 9 and the socket 8 are separated, so that the transformer body 1 is powered off.

[0056] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended only as examples and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A rectifier transformer with insulation protection, comprising a transformer body (1), wherein the top of the transformer body (1) is fixedly connected to a connecting plate (2), the ends of the connecting plate (2) are fixedly connected to a high-voltage column (3) and a low-voltage column (4) connected to the transformer body (1), and the high-voltage column (3) and the low-voltage column (4) are commonly connected to a support plate (5); characterized in that: Also includes: An on-off power component (6), the on-off power component (6) being mounted on the support plate (5) and connected to the high-voltage column (3) and the low-voltage column (4), the on-off power component (6) being used to control the on-off of the high-voltage column (3) and the low-voltage column (4); A limiting component (7), the limiting component (7) is arranged in conjunction with the on-off component (6) and is used to limit the connection point after the on-off component (6) is energized; The on-off assembly (6) includes two sliding columns (11) slidably connected to the support plate (5), the two sliding columns (11) are symmetrically mounted on the support plate (5), the bottoms of the two sliding columns (11) pass through the support plate (5), and the tops are commonly connected to a sliding plate (12), a plurality of groups of plugs (9) are fixedly connected to the bottom ends of the sliding plates (12) at positions corresponding to the high-voltage columns (3) and the low-voltage columns (4), the top ends of each of the plugs (9) pass through the sliding plates (12) upwards and are connected to a terminal (10), the top ends of the high-voltage columns (3) and the low-voltage columns (4) are both connected to sockets (8) that match the plugs (9), and a lifting member (13) for driving the sliding plates (12) to move up and down is mounted on the sliding plates (12); The lifting member (13) includes a fixed ear plate (15) fixedly connected to the sliding plate (12), a fixed sleeve (14) is coaxially fixed to the inner side of the fixed ear plate (15), an extrusion ring (16) is slidably connected to the inside of the fixed sleeve (14) along its axial direction, a threaded tube (17) is fixedly connected to the bottom end of the extrusion ring (16), a limiting ring (18) for limiting the downward movement of the extrusion ring (16) is formed on the inner wall of the fixed sleeve (14), a limiting column (48) slidably connected to the extrusion ring (16) is fixedly connected to the limiting ring (18), the threaded tube (17) passes through the limiting ring (18) and is slidably connected thereto, a reciprocating screw (19) is connected to the inner thread of the threaded tube (17), and the bottom end of the reciprocating screw (19) is connected to the output end of the driving member (20) fixed on the connecting plate (2).

2. The rectifier transformer with insulation protection according to claim 1, characterized in that: The driving member (20) includes a fixing frame (21) fixed on the connecting plate (2), a motor (22) is installed on the top of the fixing frame (21), an output end of the motor (22) is connected to a coupling (23), and a driving shaft (24) at the end of the coupling (23) passes through the supporting plate (5) and is fixedly connected to the reciprocating screw (19).

3. The rectifier transformer with insulation protection according to claim 2, characterized in that: The limiting assembly (7) includes limiting rods (25) respectively connected to the plurality of plugs (9) in a sliding manner. The end of each limiting rod (25) facing the plug (9) can penetrate the plug (9) and extend into the interior thereof, and the end facing away from the plug (9) is respectively connected to two connecting rods (28) provided on the support plate (5). The socket (8) is provided with a limiting groove (26) adapted to the limiting rod (25); when the plug (9) is inserted into the corresponding socket (8), the limiting rod (25) can pass through the limiting groove (26) and extend into the socket (8), thereby limiting and fixing the connection between the plug (9) and the socket (8); An elastic member (27) is installed between the limiting rod (25) and the plug (9), and the elastic member (27) is used to drive the limiting rod (25) to disengage from the plug (9).

4. The rectifier transformer with insulation protection according to claim 3, characterized in that: The elastic member (27) includes a tension spring (31) sleeved on the outside of the limiting rod (25), one end of the tension spring (31) is connected to a fixing plate (30) fixed on the plug (9), and the other end is connected to a supporting plate (32) fixed on the limiting rod (25).

5. The rectifier transformer with insulation protection according to claim 3, characterized in that: The invention also includes a moving member (29) for driving the two connecting rods (28) to move synchronously toward or away from each other, wherein the moving member (29) includes a flat gear (33) fixedly connected to the driving shaft (24), and a first rack (34) and a second rack (35) are meshed on the outer side of the flat gear (33), and the first rack (34) and the second rack (35) are centrally symmetrically arranged along the axis of the driving shaft (24), and the ends of the first rack (34) and the second rack (35) facing away from each other are fixedly connected to a fixed plate (36), and the fixed plate (36) is connected to the corresponding connecting rod (28) through a connecting member (37).

6. The rectifier transformer with insulation protection according to claim 5, characterized in that: The connecting member (37) includes a movable column (38) fixedly connected to the connecting rod (28), the end of the movable column (38) is fixedly connected to an inner sliding rod (39) in the vertical direction, and the outer portion of the inner sliding rod (39) is provided with a sleeve (40) for sliding. The bottom end of the sleeve (40) passes through the support plate (5) and is fixedly connected to the corresponding fixed plate (36). A sliding sleeve (41) is also fixedly sleeved on the outer circumferential surface of the sleeve (40), and the upper and lower ends of the sliding sleeve (41) form a limit with the plate surface of the support plate (5) in the vertical direction.

7. The rectifier transformer with insulation protection according to claim 6, characterized in that: A baffle (42) is installed below the plug (9), and a rotating shaft (43) is connected to one side of the baffle (42). Fixed seats (44) are fixed to the upper end of the support plate (5) at both ends of the length direction of the rotating shaft (43), and the rotating shaft (43) is rotatably connected to the fixed seat (44) via a torsion spring (45).

8. The rectifier transformer with insulation protection according to claim 6, characterized in that: Two groups of symmetrically arranged reinforcement rods (47) are fixedly connected between the connecting rod (28) and the movable column (38).

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