Insulation protection rectifier transformer

Abstract

The invention discloses an insulation protection rectifier transformer which comprises a transformer body, the top end of the transformer body is fixedly connected with a connecting plate, the end of the connecting plate is fixedly connected with a high-voltage column and a low-voltage column which are connected with the transformer body, and the high-voltage column and the low-voltage column are jointly connected with a supporting plate; the power-on and power-off assembly is installed on the supporting plate and connected with the high-voltage column and the low-voltage column, and the power-on and power-off assembly is used for controlling on-off of the high-voltage column and the low-voltage column; according to the power-on and power-off transformer, automatic power-on and power-off of the transformer body are achieved through the arrangement of the power-on and power-off assembly and the limiting assembly, so that the transformer body has the power-on and power-off functions; therefore, on-off of the transformer body can be controlled on site, and the problem that the maintenance process is troublesome due to the fact that the transformer body does not have the on-off function in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and particularly to a rectifier transformer with insulation protection. Background Art

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

[0003] Currently, during the use of a transformer, the transformer may experience overload, short circuit, or abnormal voltage conditions. However, the transformer itself does not have the function of automatically switching on and off. To protect the safe operation of the transformer and the power system, various protection devices are usually configured to protect the transformer. When overload, short circuit, or abnormality occurs, the protection device can automatically cut off the power of the transformer. After maintenance, it is necessary to return to the power control room to close the switch to make the transformer energized. However, since it is necessary to return to the control room when closing the switch, it is impossible to observe the usage situation of the transformer on site. Therefore, after closing the switch, the maintenance personnel still need to return to the site to observe the usage situation of the transformer to ensure that the transformer can operate normally and stably, making the transformer maintenance process relatively complicated and troublesome. For this reason, we propose a rectifier transformer with insulation protection. Summary of the Invention

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

[0005] To achieve the above purpose, the present invention provides the following technical solution: A rectifier transformer with insulation protection, including a transformer body. A connecting plate is fixedly connected to the top end of the transformer body. High-voltage columns and low-voltage columns connected to the transformer body are fixedly connected to the end of the connecting plate. A support plate is commonly connected to the high-voltage columns and the low-voltage columns. It further includes: A power on / off component, which is installed on the support plate and connected to the high-voltage columns and the low-voltage columns. The power on / off component is used to control the on / off of the high-voltage columns and the low-voltage columns; A limiting component, which is cooperatively arranged with the power on / off component and is used to limit the wiring connection after the power on / off component is energized.

[0006] Preferably, the power-on / off component includes two sliding columns slidably connected to the support plate. The two sliding columns are symmetrically installed on the support plate. The bottoms of the two sliding columns penetrate through the support plate, and the tops are jointly connected to a sliding plate. Multiple plugs are fixedly connected to the bottom end of the sliding plate corresponding to the positions of the high-voltage column and the low-voltage column. The top end of each plug penetrates upward through the sliding plate and is connected to a wiring column. The tops of the high-voltage column and the low-voltage column are both connected with sockets matching the plugs. An elevating member for driving the sliding plate to lift is installed on the sliding plate.

[0007] Preferably, the elevating member includes a fixed ear plate fixedly connected to the sliding plate. A fixed sleeve is coaxially fixed inside the fixed ear plate. An extrusion ring is slidably connected along the axial direction inside the fixed sleeve. The bottom end of the extrusion ring is fixedly connected to a threaded tube. A limiting ring for restricting the downward movement of the extrusion ring is formed on the inner wall of the fixed sleeve. A limiting post slidably connected to the extrusion ring is fixedly connected to the limiting ring. The threaded tube penetrates through the limiting ring and is slidably connected therewith. A reciprocating lead screw is threadedly connected inside the threaded tube. The bottom end of the reciprocating lead screw is connected to the output end of a driving member fixed on a connecting plate.

[0008] Preferably, the driving member includes a fixed frame fixed on the connecting plate. A motor is installed on the top of the fixed frame. The output end of the motor is connected with a coupling. The driving shaft at the end of the coupling penetrates through the support plate and is fixedly connected to the reciprocating lead screw.

[0009] Preferably, the limiting component includes limiting rods slidably connected to multiple groups of plugs respectively. One end of each limiting rod facing the plug can penetrate through the plug and extend into its interior, and the other end facing away from the plug is respectively connected to two connecting rods arranged on the support plate; 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; An elastic member is installed between the limiting rod and the plug. The elastic member is used to drive the limiting rod to disengage from the plug.

[0010] Preferably, the elastic member includes a tension spring sleeved outside the limiting rod. One end of the tension spring is connected to a fixed piece fixed on the plug, and the other end is connected to a support piece fixed on the limiting rod.

[0011] Preferably, it further includes a moving member for driving the two connecting rods to move synchronously towards or away from each other. The moving member includes a spur gear fixedly connected to the driving shaft. A first rack and a second rack are meshed on the outer side of the spur gear. The first rack and the second rack are centrally symmetrically arranged along the axis of the driving shaft. Fixing plates are fixedly connected to the ends of the first rack and the second rack that are away from each other. The fixing plates are connected to the corresponding connecting rods through connecting members.

[0012] Preferably, the connecting member includes a moving column fixedly connected to the connecting rod. An inner sliding rod is fixedly connected to the end of the moving column in the vertical direction. A sleeve is slidably sleeved outside the inner sliding rod. The bottom end of the sleeve penetrates through the support plate and is fixedly connected to the corresponding fixing plate. A sliding sleeve is also fixedly sleeved on the outer circumferential surface of the sleeve. The upper and lower ends of the sliding sleeve form a limit with the plate surface of the support plate in the vertical direction.

[0013] Preferably, a baffle is installed below the plug. One side of the baffle is connected with a rotating shaft. Fixed seats are fixed at both ends of the support plate corresponding to the length direction of the rotating shaft. The rotating shaft is rotatably connected to the fixed seat through a torsion spring.

[0014] Preferably, two groups of symmetrically arranged reinforcing rods are fixedly connected between the connecting rod and the moving column.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: A rectifier transformer with insulation protection provided by the present invention, during the power-on process, connects the high-voltage connection wire and the low-voltage connection wire to multiple sets of terminal posts respectively. Then, through the action of the driving member, the reciprocating lead screw rotates. After the reciprocating lead screw rotates, the rotation of the reciprocating lead screw will drive the threaded tube to move. When the threaded tube moves, it will drive the extrusion ring to move. When the extrusion ring moves to fit with the limit ring, the continuous downward movement of the threaded tube will drive the fixed sleeve to move through the action of the extrusion ring and the limit ring. Through the action of the fixed sleeve, the sliding plate is driven to move. Through the movement of the sliding plate, the plug is driven to move, so that the plug is inserted into the socket, and the transformer body is powered on. When power is off, only need to control the driving member to continue to operate to make the reciprocating lead screw continue to rotate. Through the continuous rotation of the reciprocating lead screw, the sliding plate rises to drive the plug to rise. At this time, the plug and the socket are separated, and the transformer body is powered off. And during the power-on process, the limiting component acts to limit the plug and the socket, improving stability. Therefore, through the action of the power-on and power-off component and the limiting component, the automatic power-on and power-off of the transformer body is realized, so that the transformer body has the function of power-on and power-off. Therefore, the on-off of the transformer body can be controlled on-site, solving the problem that the transformer body in the prior art does not have the function of power-on and power-off, resulting in a more troublesome maintenance process. Description of the Drawings

[0016] Figure 1 Schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the sectional structure of the present invention; Figure 3 Schematic diagram of the power on / off component structure of the present invention; Figure 4 Schematic diagram of the lifting component structure of the present invention; Figure 5 For the present invention Figure 4 Schematic diagram of the structure of area A in; Figure 6 Schematic diagram of the limit component structure of the present invention; Figure 7 Schematic diagram of the partial structure of the limit component of the present invention; Figure 8 Schematic diagram of the moving component structure of the present invention; Figure 9 For the present invention Figure 8 Schematic diagram of the structure of area B in; Figure 10 Schematic diagram of the plug protection structure of the present invention; Figure 11 For the present invention Figure 10 Schematic diagram of the structure of area C in.

[0017] In the figure: 1, transformer body; 2, connecting plate; 3, high-voltage column; 4, low-voltage column; 5, support plate; 6, power on / off component; 7, limit component; 8, socket; 9, plug; 10, terminal; 11, sliding column; 12, sliding plate; 13, lifting component; 14, fixed sleeve; 15, fixed ear plate; 16, extrusion ring; 17, threaded pipe; 18, limit ring; 19, reciprocating lead screw; 20, driving component; 21, fixed frame; 22, motor; 23, coupling; 24, driving shaft; 25, limit rod; 26, limit groove; 27, elastic component; 28, connecting rod; 29, moving component; 30, fixed piece; 31, tension spring; 32, support piece; 33, spur gear; 34, first rack; 35, second rack; 36, fixed plate; 37, connecting piece; 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 piece; 47, reinforcing rod; 48, limit post. Detailed implementation manners

[0018] The present invention will be further described in detail below with reference to the accompanying drawings. The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and other obvious deformations can be conceived by those skilled in the art. The basic principles defined in the following description of the present invention can be used in other implementation schemes, deformation schemes, improvement schemes, equivalent schemes, and other technical schemes without departing from the spirit and scope of the present invention.

[0019] Those skilled in the art should understand that in the disclosure of the present invention, the orientations or positions indicated by the terms "longitudinal", "lateral", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or position relationships shown in the accompanying drawings. It is only for the convenience of simplifying the description of the present invention, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention.

[0020] It can be understood that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "a" should not be construed as limiting the quantity.

[0021] Please refer to Figures 1 - 11 , in this embodiment, a rectifier transformer with insulation protection is proposed, which includes a transformer body 1, a power-on / off component 6, and a limiting component 7. A connecting plate 2 is fixedly connected to the top end of the transformer body 1. High-voltage columns 3 and low-voltage columns 4 connected to the transformer body 1 are fixedly connected to the end of the connecting plate 2. A support plate 5 is commonly connected to the high-voltage columns 3 and the low-voltage columns 4; the power-on / off component 6 is installed on the support plate 5 and connected to the high-voltage columns 3 and the low-voltage columns 4. The power-on / off component 6 is used to automatically control the power-on and power-off of the high-voltage columns 3 and the low-voltage columns 4; the limiting component 7 is cooperatively arranged with the power-on / off component 6 and is used to limit the wiring position after the power-on / off component 6 is powered on, so as to improve the stability during power-on.

[0022] Specifically, the power-on and power-off component 6 in the above solution includes two sliding columns 11 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 penetrate through the support plate 5, and the tops are jointly connected to a sliding plate 12. A plurality of plugs 9 are fixedly connected to the bottom end of the sliding plate 12 corresponding to the positions of the high-voltage column 3 and the low-voltage column 4. The top end of each plug 9 penetrates upward through the sliding plate 12 and is connected to a wiring column 10. The tops of the high-voltage column 3 and the low-voltage column 4 are both connected to sockets 8 that cooperate with the plugs 9. An elevating member 13 for driving the sliding plate 12 to lift is installed on the sliding plate 12. The elevating member 13 drives the sliding plate 12 to move in the vertical direction, so that the plug 9 is inserted into the corresponding socket 8, thereby controlling the power-on and power-off of the transformer body 1.

[0023] When the transformer is installed, the high-voltage connection wire and the low-voltage connection wire are respectively connected to a plurality of wiring columns 10. The elevating member 13 acts to drive the sliding plate 12 to move downward toward the support plate 5, and then the plug 9 is inserted into the socket 8, and the transformer body 1 is powered on. When the transformer encounters a fault and powers off, the elevating member 13 drives the sliding plate 12 to rise, and the sliding plate 12 drives the plug 9 to disengage from the socket 8. At this time, the transformer body 1 is powered off.

[0024] Moreover, the setting of the power-on and power-off component 6 can automatically cut off the power for various faults that occur in the power system of the transformer body 1, such as overload, short circuit, and overheating. The power-on and power-off component 6 is controlled by the controller in the transformer body 1. The specific control is as follows: Overload detection: The current is monitored through a current transformer in the transformer circuit system. When the current detected by the current transformer is greater than the preset value, it indicates that the circuit is in an overload state. The controller receives the signal and controls the motor 11 to start. When the motor 11 starts, the socket 8 and the plug 9 are disengaged and powered off; Short-circuit detection; After a power short circuit, it means that there is no resistance in the circuit. By continuously monitoring the resistance on the circuit and feeding back the resistance information to the controller, when the detected resistance is zero, it indicates that the circuit is in a short-circuit state. Then the controller controls the motor 11 to start, and the socket 8 and the plug 9 are disengaged and powered off through the start of the motor 11; Overheat detection: The temperature in the circuit is continuously monitored through the action of a 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 socket 8 and the plug 9 are disengaged and powered off through the start of the motor 11.

[0025] For the lifting member 13 in the above solution, specifically, it includes a fixed ear plate 15 fixedly connected to the sliding plate 12. A fixed sleeve 14 is coaxially fixed inside the fixed ear plate 15. An extrusion ring 16 is slidably connected along the axial direction inside the fixed sleeve 14. The bottom end of the extrusion ring 16 is fixedly connected to a threaded pipe 17. A limiting ring 18 for restricting 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 pipe 17 passes through the limiting ring 18 and is slidably connected therewith. A reciprocating lead screw 19 is threadedly connected inside the threaded pipe 17. The bottom end of the reciprocating lead screw 19 is connected to the output end of the driving member 20. By driving the reciprocating lead screw 19 to rotate in one direction all the time by the driving member 20, under the threaded cooperation of the threaded pipe 17 and the reciprocating lead screw 19, a linear reciprocating motion is performed inside the fixed sleeve 14.

[0026] The driving member 20 includes a fixed frame 21 fixed to the connecting plate 2. A motor 22 is installed on the top of the fixed frame 21. The output end of the motor 22 is connected to a coupling 23. The driving shaft 24 at the end of the coupling 23 passes through the support plate 5 and is fixedly connected to the reciprocating lead screw 19.

[0027] When the transformer is powered on, the motor 22 is started. The motor 22 drives the driving shaft 24 to rotate through the coupling 23. The reciprocating lead screw 19 rotates synchronously with the driving shaft 24. Since the threaded pipe 17 and the reciprocating lead screw 19 are threadedly connected, the rotational motion of the reciprocating lead screw 19 will be converted into the linear movement of the threaded pipe 17. The threaded pipe 17 drives the extrusion ring 16 to move downward. When the extrusion ring 16 moves to fit the limiting ring 18, the continuous downward movement of the threaded pipe 17 will drive the fixed sleeve 14 to move downward synchronously therewith. The sliding plate 12 and the fixed sleeve 14 move downward synchronously. When the threaded pipe 17 moves to the bottom end of the reciprocating lead screw 19, the plug 9 just inserts into the corresponding socket 8 inside, and the transformer body 1 is powered on, and the motor 22 stops working.

[0028] When the transformer needs to be powered off, the motor 22 is restarted. At this time, the reciprocating lead screw 19 continues to rotate through the rotation of the driving shaft 24. The reciprocating lead screw 19 drives the threaded pipe 17 to move upward. And the threaded pipe 17 first slides inside the fixed sleeve 14. When the threaded pipe 17 moves upward so that the extrusion ring 16 fits the top of the fixed sleeve 14, at this time, the threaded pipe 17 and the fixed sleeve 14 move upward synchronously, separating the socket 8 and the plug 9, and the transformer body 1 is powered off.

[0029] In addition, to ensure the reliability of the connection between the socket 8 and the plug 9, in this embodiment, a limiting component 7 is used in cooperation with the power-on / off component 6. When the power-on / off component 6 is powered on, the limiting component 7 can limit the connection between the socket 8 and the plug 9, so that the two are always in a connected state. Specifically, the limiting component 7 includes limiting rods 25 that are respectively slidably connected to multiple groups of plugs 9. One end of each limiting rod 25 facing the plug 9 can penetrate the plug 9 and extend into its interior, and the other end facing away from the plug 9 is respectively connected to two connecting rods 28 arranged on the support plate 5 (the three limiting rods 25 corresponding to the high-voltage column 3 are connected to one connecting rod 28, and the three limiting rods 25 corresponding to the high-voltage column 3 are connected to the other connecting rod 28). 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, so as to limit and fix the connection between the plug 9 and the socket 8. Through the synchronous opposite movement of the two connecting rods 28, six limiting rods 25 can be driven to move synchronously towards the inner side of the plug 9. In addition, 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, that is, to reset.

[0030] As a preferred embodiment, the elastic member 27 in this embodiment includes a tension spring 31 sleeved outside the limiting rod 25. One end of the tension spring 31 is connected to a fixing piece 30 fixed on the plug 9, and the other end is connected to a support piece 32 fixed on the limiting rod 25.

[0031] When the transformer is powered on, the two connecting rods 28 move towards each other synchronously. At this time, each limiting rod 25 will move away from the plug 9, and the limiting rod 25 disengages from the plug 9 to avoid affecting the insertion of the plug 9 into the socket 8, and the tension spring 31 is gradually stretched. After the plug 9 is inserted into the socket 8, the limiting rod 25 is reset under 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 making the connection between the socket 8 and the plug 9 stable and avoiding loosening. During the power-off process, the limiting rod 25 first disengages from the socket 8 and the plug 9 through the moving member 29, and then the lifting member 13 operates to drive the plug 9 and the socket 8 to separate.

[0032] In this embodiment, the movement of the two connecting rods 28 toward or away from each other is achieved by driving a moving member 29, which specifically includes a spur gear 33 fixedly mounted on the drive shaft 24, and a first rack 34 and a second rack 35 are meshed on the outer side of the spur gear 33. The first rack 34 and the second rack 35 are centrally symmetrically arranged 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 member 37. The drive shaft 24 is driven to rotate by the motor 22, and the first rack 34 and the second rack 35 are meshed with the spur gear 33 and move toward or away from each other synchronously in the horizontal direction.

[0033] The connecting member 37 includes a movable column 38 fixedly connected to the connecting rod 28, and the end of the movable column 38 is fixedly connected to an inner sliding rod 39 in the vertical direction. The outside of the inner sliding rod 39 is slidably sleeved with a sleeve 40, and 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 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.

[0034] In addition, in this embodiment, 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 ends of the support plate 5 at both ends in 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.

[0035] 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 pulling the multiple groups of limiting rods 25 to move.

[0036] A rectifier transformer with insulation protection proposed by the present invention has the following specific working principle: When the transformer is powered on, the motor 22 is started. The motor 22 drives the drive shaft 24 to rotate through the coupling 23. The reciprocating screw rod 19 is in threaded engagement with the threaded tube 17. And since the threaded tube 17 is circumferentially limited to each other inside the fixed sleeve 14, when the reciprocating screw rod 19 rotates, it will drive the threaded tube 17 to move downward along its axial direction inside the fixed sleeve 14. During the process that the extrusion ring 16 at the top of the threaded tube 17 moves downward to fit with the limiting ring 18, the sliding plate 12 remains stationary. After the extrusion ring 16 fits with the limiting ring 18, when the threaded tube 17 continues to move downward, it will drive the fixed sleeve 14 to move downward. At this time, the plug 9 on the sliding plate 12 moves downward and approaches the socket 8. During the process that the extrusion ring 16 moves downward to fit with the limiting ring 18, the drive shaft 24 rotates to drive the spur gear 33 to rotate. The first rack 34 and the second rack 35 approach each other because they are meshed with the spur gear 33. Through the action of the fixing plate 36, the sleeve 40, the moving column 38 and the connecting rod 28, the limiting rod 25 will extend out of the plug 9 (it should be noted that the limiting rod 25 is inserted into the plug 9 in the initial state). When the extrusion ring 16 moves downward to fit with the limiting ring 18, the limiting rod 25 just extends out of the plug 9, avoiding affecting the insertion of the plug 9 into the socket 8. And at this time, the first rack 34 and the second rack 35 also move to the limit state (that is, the moving lengths of the first rack 34 and the second rack 35 are just the same as the length that the limiting rod 25 extends into the plug 9). After that, when the drive shaft 24 continues to rotate, the limiting rod 25 always maintains the above state and moves downward synchronously with the sliding plate 12. When the threaded tube 17 moves to the bottom of the reciprocating screw rod 19, the plug 9 is completely inserted into the socket 8. When the transformer body is powered on, the motor 22 is powered off, and the drive shaft 24 is in an idle state. At this time, the limiting rod 25 will be inserted into the limiting groove 26 under the action of the tension spring 31 to limit the socket 8 and the plug 9. And during the reset process of the limiting rod 25, the threaded tube 17 only slides upward inside the fixed sleeve 14 (the extrusion ring 16 moves away from the limiting ring 18 and moves towards the top of the fixed sleeve 14), while the fixed sleeve 14 remains stationary, that is, the socket 8 and the plug 9 remain stationary.

[0037] When the device needs to be powered off, the motor 22 is started to drive the reciprocating screw rod 19 to rotate. At this time, the threaded tube 17 moves upward relative to the reciprocating screw rod 19. The threaded tube 17 will first slide upward inside the fixed sleeve 14 to disengage from the limiting ring 18. During this process, the first rack 34 and the second rack 35 are meshed with the spur gear 33 again to disengage the limiting rod 25 from the plug 9. After the threaded tube 17 moves upward until the extrusion ring 16 fits with the end of the fixed sleeve 14, the limiting 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, causing the transformer body 1 to be powered off.

[0038] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and illustrated in the embodiments, and without departing from the said principles, any variations or modifications can be made to the embodiments of the present invention.

Claims

1. An insulated and protected rectifier transformer, comprising a transformer body (1), a connecting plate (2) is fixedly connected to the top end of the transformer body (1), a high-voltage column (3) and a low-voltage column (4) which are connected to the transformer body (1) are fixedly connected to the end of the connecting plate (2), and a support plate (5) is commonly connected to the high-voltage column (3) and the low-voltage column (4); 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 limit assembly (7), the limit assembly (7) being arranged in cooperation with the on-off assembly (6) and being used to limit the connection point after the on-off assembly (6) is powered on.

2. The rectifier transformer with insulation protection according to claim 1, characterized in that: The on-off power component (6) comprises 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) penetrate 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) penetrate the sliding plates (12) upwards and are connected to terminal posts (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 rise and fall is mounted on the sliding plates (12).

3. An insulated and protected rectifier transformer according to claim 2, characterized in that: The lifting member (13) comprises 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) penetrates the limiting ring (18) and is slidably connected thereto; a reciprocating screw (19) is threadedly connected to the inner side of the threaded tube (17); and the bottom end of the reciprocating screw (19) is connected to the output end of a driving member (20) fixed to the connecting plate (2).

4. The rectifier transformer with insulation protection according to claim 3, characterized in that: The driving member (20) comprises a fixing frame (21) fixed on the connecting plate (2), a motor (22) being mounted on the top of the fixing frame (21), an output end of the motor (22) being connected to a coupling (23), and a driving shaft (24) at the end of the coupling (23) passing through the supporting plate (5) and being fixedly connected to the reciprocating screw rod (19).

5. An insulated and protected rectifier transformer according to claim 4, characterized in that: The limiting assembly (7) comprises limiting rods (25) respectively connected in a sliding manner to the plurality of groups of plugs (9); an end of each limiting rod (25) facing the plug (9) can penetrate the plug (9) and extend into the interior thereof, and an end facing away from the plug (9) is respectively connected to two connecting rods (28) arranged on the support plate (5); The socket (8) is provided with a limit groove (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 groove (26) and extend into the socket (8) to limit and fix the connection between the plug (9) and the socket (8). An elastic member (27) is installed between the limit rod (25) and the plug (9), and the elastic member (27) is used to drive the limit rod (25) to disengage from the plug (9).

6. The rectifier transformer with insulation protection according to claim 5, characterized in that: The elastic member (27) includes a tension spring (31) sleeved outside the limit rod (25). One end of the tension spring (31) is connected to a fixing piece (30) fixed on the plug (9), and the other end is connected to a support piece (32) fixed on the limit rod (25).

7. An insulating and protecting rectifier transformer according to claim 5, characterized in that: It further includes a moving member (29) for driving the two connecting rods (28) to move synchronously towards or away from each other. The moving member (29) includes a spur gear (33) fixedly connected to the driving shaft (24). The outside of the spur gear (33) is engaged with a first rack (34) and a second rack (35). The first rack (34) and the second rack (35) are centrally symmetrically arranged along the axis of the driving shaft (24). One end of the first rack (34) and the second rack (35) facing away from each other are fixedly connected with a fixing plate (36). The fixing plate (36) is connected to the corresponding connecting rod (28) through a connecting member (37).

8. An insulated and protected rectifier transformer according to claim 7, characterized in that: The connecting member (37) includes a moving column (38) fixedly connected to the connecting rod (28). The end of the moving column (38) is fixedly connected with an 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) penetrates through the support plate (5) and is fixedly connected to the corresponding fixing plate (36). A sliding sleeve (41) is also fixedly sleeved on the outer circumferential surface of the sleeve (40). 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.

9. A rectifier transformer with insulation protection according to any one of claims 2-8, characterized in that: A baffle (42) is installed below the plug (9). One side of the baffle (42) is connected with a rotating shaft (43). The upper end of the support plate (5) is fixed with fixing seats (44) corresponding to the two ends of the length direction of the rotating shaft (43). The rotating shaft (43) is rotatably connected to the fixing seats (44) through a torsion spring (45).

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

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