Transformer tap alternating current voltage stabilizing equipment based on silicon controlled rectifier control

Abstract

The invention discloses a transformer tap alternating current voltage stabilizing device based on silicon controlled rectifier control, and belongs to the field of transformers. A transformer tap alternating current voltage stabilizing device based on silicon controlled rectifier control comprises a cabinet, a transformer, a fan for cooling the transformer and a dehumidification mechanism for drying airflow. The dehumidification mechanism comprises a dehumidification box, dehumidification units arranged on the dehumidification box in a matrix mode and a supply box for supplying desiccant to the dehumidification units. The dehumidification unit comprises a sliding box for accommodating a drying agent; a feeding hole is formed in the upper part of the front end of the sliding box; a recycling opening is formed in the lower part of the front end of the sliding box; the dehumidification unit further comprises an upper baffle used for sealing the feeding port and a lower baffle used for sealing the recycling port.

Description

Technical Field

[0001] The present invention belongs to the field of transformers, and more specifically, relates to a transformer tap AC voltage stabilizing device controlled by thyristors. Background Art

[0002] An intelligent substation mainly includes two parts: intelligent high-voltage equipment and a unified information platform for the substation. The intelligent high-voltage equipment mainly includes intelligent transformers, intelligent high-voltage switchgear, electronic current transformers, etc. Among them, the transformer is installed in the voltage stabilizing device and cooled by a fan for the transformer.

[0003] During the long-term use of the transformer, if the humidity in the air is relatively high, water droplets will condense on the surface of the transformer, so there is a risk of short circuit in the transformer. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a transformer tap AC voltage stabilizing device controlled by thyristors, which can dry the air for cooling the transformer.

[0005] The transformer tap AC voltage stabilizing device controlled by thyristors of the present invention includes a cabinet, a transformer, a fan for cooling the transformer, and a dehumidifying mechanism for drying the air flow; the dehumidifying mechanism includes a dehumidifying box, dehumidifying units arranged in a matrix on the dehumidifying box, and a supply box for replenishing desiccant for the dehumidifying units; the dehumidifying unit includes a sliding box for accommodating the desiccant; a feed port is arranged at the upper part of the front end of the sliding box; a recovery port is arranged at the lower part of the front end of the sliding box; the dehumidifying unit further includes an upper baffle for closing the feed port and a lower baffle for closing the recovery port.

[0006] As a further improvement of the present invention, connection ports are evenly arranged at the front end of the dehumidifying box and are opposite to each sliding box; a lower rotating block with a rotating shaft arranged in the left-right direction is rotatably connected to the lower baffle; a lower protrusion is arranged at an eccentric position of the lower rotating block; a limiting strip capable of abutting against the lower protrusion is arranged in the connection port; the dehumidifying unit further includes a load-bearing spring for driving the sliding box to move upward; when the overall weight of the sliding box reaches a set value, the lower protrusion is separated from the limiting strip, and the lower rotating block will rotate to the horizontal. At this time, the supply box moves upward, driving the lower rotating block and the lower baffle to move upward synchronously, and the lower baffle no longer closes the recovery port.

[0007] As a further improvement of the present invention, a limiting frame is provided at the lower end of the supply box; a driving plate is slidably connected to the upper edge of the supply box in the left-right direction; an insertion plate located at the upper end of the limiting frame is provided on the driving plate; when a lower rotating block is in a horizontal position, the supply box moves upward until the lower rotating block abuts against the upper end of the limiting frame, and the insertion plate is located behind the lower protrusion. At this time, the insertion plate will prevent the lower rotating block from rotating vertically, and then the supply box will drive the lower rotating block and the lower baffle to move upward synchronously; when the driving plate moves to separate the insertion plate from the lower protrusion, the lower baffle will move downward under its own gravity, and the lower rotating block will rotate to the vertical, and the lower protrusion will abut against the limiting strip again.

[0008] As a further improvement of the present invention, an upper rotating block with a rotating shaft arranged in the left-right direction is rotatably connected to the upper baffle; an upper protrusion is provided at an eccentric position on the upper rotating block; a driving block is provided at the front end of the sliding box; a deflecting abutting surface with an inclined distribution is provided on the upper rotating block to abut against the driving block and thus rotate the upper rotating block to the horizontal; the limiting frame and the insertion plate can abut against the upper rotating block in the horizontal position and drive the upper baffle to move upward.

[0009] As a further improvement of the present invention, a baffle magnet is provided at the upper end of the upper baffle; a fixed magnet capable of attracting and fastening with the baffle magnet is provided at the upper end of the sliding box; when the upper baffle closes the feed port, the baffle magnet and the fixed magnet are attracted and fastened.

[0010] As a further improvement of the present invention, screws are respectively provided on both sides of the supply box in the cabinet; a sliding block is drivingly connected to the screw; a connecting spring is connected between the upper end of the sliding block and the supply box; a driving inclined surface with an inclined distribution is provided at a position on the driving plate close to the sliding block; a sliding column capable of abutting against the driving inclined surface is provided on the sliding block; a stop block for preventing the lower baffle from moving upward is provided at the front end of the sliding box.

[0011] As a further improvement of the present invention, the two screws are drivingly connected by a synchronous belt; a motor for driving one screw to rotate is fixedly connected in the cabinet.

[0012] As a further improvement of the present invention, a transmission gear is rotatably connected to the sliding box; a ratchet is coaxially arranged with the transmission gear; an upper rack meshing with the transmission gear is provided on the upper baffle; a lower ratchet pawl in one-way driving connection with the ratchet is provided on the lower baffle.

[0013] As a further improvement of the present invention, a recycling box for receiving the dropped desiccant is provided below the dehumidification box in the cabinet.

[0014] As a further improvement of the present invention, an operation panel is provided on the surface of the cabinet; the transformer includes a primary coil and a secondary coil; a saturable reactor connected to the primary coil and a DC coil with two like-named ends connected are further provided inside the cabinet; the DC coil has a tap.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By providing a plurality of sliding boxes, the air entering the cabinet is dried, avoiding the condensation of water droplets on the surface of the transformer and thus short circuit. And each sliding box is relatively independent, and the desiccant in any position of the sliding box can be replaced through the supply box.

[0016] The supply box in this solution stores the unabsorbed desiccant and can replenish the desiccant into the sliding box. And during the upward movement of the supply box, through the cooperation of the limit frame, the insertion plate and the lower rotating block, the supply box can drive the lower baffle to move upward, no longer closing the recovery port, facilitating the desiccant in the sliding box to fall into the recovery box. Through the cooperation of the limit frame, the insertion plate and the upper rotating block, the supply box can drive the upper baffle to move upward, making the upper baffle close the feeding port again.

[0017] In this solution, during the upward movement of the lower baffle, the lower baffle not only serves to open the recovery port, but also drives the upper baffle to move downward through the ratchet and the transmission gear, making the upper baffle no longer close the feeding port.

[0018] In this solution, through the sliding block and the connecting spring, the sliding block can not only drive the supply box to move up and down, but also after the supply box cannot move upward, the sliding column on the sliding block cooperates with the driving inclined surface to move the driving plate. The insertion plate on the driving plate moves, the insertion plate separates from the lower protrusion, and then the lower baffle separates from the supply box, and the lower baffle returns downward by gravity. The insertion plate separates from the upper protrusion, and then the upper baffle separates from the supply box, facilitating the supply box to move towards other sliding boxes. Description of the Drawings

[0019] Figure 1 is the structural schematic diagram of the present invention;

[0020] Figure 2 is the sectional structural schematic diagram of the present invention;

[0021] Figure 3 is the structural schematic diagram of the dehumidification mechanism of the present invention;

[0022] Figure 4 is the structural schematic diagram of the dehumidification unit of the present invention;

[0023] Figure 5 is the sectional structural schematic diagram of the dehumidification unit of the present invention;

[0024] Figure 6 is the structural schematic diagram of the installation structure of the supply box of the present invention;

[0025] Figure 7 Schematic diagram of the structure of the sliding block and the driving plate of the present invention;

[0026] Figure 8 Schematic diagram of the structure when the plug board of the present invention is inserted behind the lower protrusion;

[0027] Figure 9 Schematic diagram of the initial state of the position of the sliding box of the present invention;

[0028] Figure 10 Schematic diagram of the structure when the lower rotating block of the present invention rotates to the horizontal;

[0029] Figure 11 Schematic diagram of the structure when the lower rotating block of the present invention abuts against the upper end of the limiting frame;

[0030] Figure 12 Schematic diagram of the structure when the plug board of the present invention is separated from the lower protrusion;

[0031] Figure 13 Schematic diagram of the structure when the upper rotating block of the present invention abuts against the upper end of the limiting frame;

[0032] Figure 14 Schematic diagram of the structure when the plug board of the present invention is separated from the upper protrusion.

[0033] Explanation of the reference numerals in the figure:

[0034] 11, cabinet; 12, ventilation opening; 13, operation panel; 14, transformer; 15, fan; 16, dehumidification mechanism; 17, recycling box; 2, dehumidification box; 21, connection port; 22, limiting strip; 3, dehumidification unit; 31, sliding box; 311, feeding port; 312, recycling port; 313, driving block; 314, stop block; 32, upper baffle; 321, upper rack; 322, baffle magnet; 33, lower baffle; 331, lower ratchet; 34, upper rotating block; 341, upper protrusion; 342, deflecting abutting surface; 35, lower rotating block; 351, lower protrusion; 36, load-bearing spring; 37, transmission gear; 371, ratchet; 4, supply box; 41, supply port; 42, limiting frame;

[0035] 5, sliding block; 51, connecting spring; 52, sliding column; 6, screw; 61, motor; 62, synchronous belt; 7, driving plate; 71, driving inclined surface; 72, plug board. Specific embodiments

[0036] Specific embodiment 1: Please refer to Figures 1-14The thyristor-controlled transformer tap AC voltage stabilizing device includes a cabinet 11, a transformer 14, a fan 15 for cooling the transformer 14, and a dehumidification mechanism 16 for drying the air flow; the dehumidification mechanism 16 includes a dehumidification box 2, dehumidification units 3 arranged in a matrix on the dehumidification box 2, and a supply box 4 for replenishing desiccant to the dehumidification units 3; the dehumidification unit 3 includes a sliding box 31 for accommodating the desiccant; an inlet 311 is provided at the upper part of the front end of the sliding box 31; a recovery port 312 is provided at the lower part of the front end of the sliding box 31; the dehumidification unit 3 further includes an upper baffle 32 for closing the inlet 311 and a lower baffle 33 for closing the recovery port 312.

[0037] The supply box 4 is arranged at the front end of the dehumidification box 2; a supply port 41 capable of being aligned with the inlet 311 to replenish desiccant into the sliding box 31 is provided at the lower part of the rear end of the supply box 4.

[0038] Connection ports 21 facing the respective sliding boxes 31 are evenly provided at the front end of the dehumidification box 2; a lower rotating block 35 with a rotating shaft arranged in the left-right direction is rotatably connected to the lower baffle 33; a lower protrusion 351 is provided at an eccentric position of the lower rotating block 35; a limiting strip 22 capable of abutting against the lower protrusion 351 is provided in the connection port 21; the limiting strip 22 is arranged longitudinally; when the lower rotating block 35 is vertical, the lower protrusion 351 abuts against the limiting strip 22, thereby preventing the lower rotating block 35 from rotating to the horizontal position. At this time, the limiting strip 22 is flush with the front end of the lower baffle 33 and does not hinder the up-and-down movement of the supply box 4; the dehumidification unit 3 further includes a load-bearing spring 36 for driving the sliding box 31 to move upward; when the desiccant in the sliding box 31 absorbs water and its weight increases, the sliding box 31 moves downward; when the overall weight of the sliding box 31 reaches a set value, the water absorbed by the desiccant is close to saturation, the lower protrusion 351 is separated from the limiting strip 22, and the lower rotating block 35 will rotate to the horizontal. At this time, the upward movement of the supply box 4 will drive the lower rotating block 35 and the lower baffle 33 to move upward synchronously, and the lower baffle 33 no longer closes the recovery port 312.

[0039] A torsion spring for driving the lower rotating block 35 to rotate to the horizontal position is provided between the lower rotating block 35 and the lower baffle 33.

[0040] A limiting frame 42 is provided at the lower end of the supply box 4; a driving plate 7 is slidably connected to the upper edge of the supply box 4 in the left-right direction; an insertion plate 72 located at the upper end of the limiting frame 42 is provided on the driving plate 7; when a lower rotating block 35 is in a horizontal position, the supply box 4 moves upward until the lower rotating block 35 abuts against the upper end of the limiting frame 42, and the insertion plate 72 is located behind the lower protrusion 351. At this time, the insertion plate 72 will prevent the lower rotating block 35 from rotating vertically, and then the supply box 4 will drive the lower rotating block 35 and the lower baffle 33 to move upward synchronously; when the driving plate 7 moves so that the insertion plate 72 is separated from the lower protrusion 351, at this time the lower baffle 33 is located above the recovery port 312, and then the lower baffle 33 will move downward under its own gravity, the lower rotating block 35 will rotate to the vertical, the lower protrusion 351 will abut against the limiting strip 22 again, and the lower baffle 33 will move downward to close the recovery port 312.

[0041] An upper rotating block 34 with a rotating shaft arranged in the left-right direction is rotatably connected to the upper baffle 32; an upper protrusion 341 is arranged at an eccentric position on the upper rotating block 34; a driving block 313 is arranged at the front end of the sliding box 31; a deflecting abutting surface 342 with an inclined distribution is arranged on the upper rotating block 34 and abuts against the driving block 313 to make the upper rotating block 34 rotate to the horizontal; the limiting frame 42 and the insertion plate 72 can abut against the upper rotating block 34 in the horizontal position and drive the upper baffle 32 to move upward.

[0042] When the upper baffle 32 closes the feeding port 311, the upper rotating block 34 is vertically downward, and the upper rotating block 34 is flush with the front end of the upper baffle 32, and does not hinder the up and down movement of the supply box 4; when the upper baffle 32 moves downward until it does not close the feeding port 311, the deflecting abutting surface 342 abuts against the driving block 313 and forces the upper rotating block 34 to rotate to the horizontal, which is convenient for the limiting frame 42 and the insertion plate 72 to drive the upper baffle 32 to move upward.

[0043] A baffle magnet 322 is provided at the upper end of the upper baffle 32; a fixed magnet capable of attracting and tightening with the baffle magnet 322 is provided at the upper end of the sliding box 31; when the upper baffle 32 closes the feeding port 311, the baffle magnet 322 is attracted and tightened with the fixed magnet.

[0044] Screws 6 are respectively arranged on both sides of the supply box 4 in the cabinet 11; a sliding block 5 is drivingly connected to the screw 6; a connecting spring 51 is connected between the upper end of the sliding block 5 and the supply box 4; a driving inclined surface 71 with an inclined distribution is arranged at a position on the driving plate 7 close to the sliding block 5; a sliding column 52 capable of abutting against the driving inclined surface 71 is arranged on the sliding block 5; a stop block 314 for preventing the lower baffle 33 from moving upward is arranged at the front end of the sliding box 31.

[0045] When the supply box 4 drives the lower baffle 33 to move upward synchronously through the limit frame 42 and the insertion plate 72 until the lower baffle 33 abuts against the stop block 314, the lower baffle 33 cannot move upward continuously. Furthermore, the limit frame 42 and the insertion plate 72 cause the supply box 4 to stop moving upward. At this time, the screw rod 6 continues to rotate, driving the sliding block 5 to move up and down. Consequently, the connecting spring 51 contracts, and the sliding block 5 moves relative to the supply box 4, causing the sliding column 52 to abut against the driving inclined surface 71, forcing the driving plate 7 to slide, and separating the insertion plate 72 from the lower protrusion 351.

[0046] When the supply box 4 drives the upper baffle 32 to move upward synchronously through the limit frame 42 and the insertion plate 72 until the upper baffle 32 closes the feed inlet 311, the upper baffle 32 cannot move upward continuously, and the supply box 4 also cannot move upward continuously. Furthermore, the sliding block 5 moves relative to the supply box 4, and the sliding column 52 forces the insertion plate 72 to separate from the upper protrusion 341 through the driving inclined surface 71. Consequently, the supply box 4 is no longer connected to the upper rotating block 34.

[0047] The two screw rods 6 are connected by a synchronous belt 62; a motor 61 for driving one screw rod 6 to rotate is fixedly connected inside the cabinet 11.

[0048] A transmission gear 37 is rotatably connected to the sliding box 31; a ratchet wheel 371 is coaxially arranged with the transmission gear 37; an upper rack 321 meshing with the transmission gear 37 is arranged on the upper baffle 32; a lower ratchet pawl 331 connected to the ratchet wheel 371 in a one-way transmission manner is arranged on the lower baffle 33.

[0049] When the lower baffle 33 closes the recovery port 312, the lower ratchet pawl 331 is located below the ratchet wheel 371; after the lower baffle 33 moves upward until the lower ratchet pawl 331 abuts against the ratchet wheel 371, the lower ratchet pawl 331 drives the ratchet wheel 371 to rotate, and the transmission gear 37 synchronously drives the upper baffle 32 to move downward; when the lower baffle 33 moves downward, the lower ratchet pawl 331 does not drive the ratchet wheel 371 to rotate.

[0050] A recovery box 17 for receiving the dropped desiccant is arranged inside the cabinet 11 below the dehumidification box 2.

[0051] An operation panel 13 is arranged on the surface of the cabinet 11; the transformer 14 includes a primary coil and a secondary coil; a saturable reactor connected to the primary coil and two DC coils with the same name ends connected are also arranged inside the cabinet 11; the DC coil has a tap.

[0052] The cabinet 11 is used to be arranged in an intelligent substation, and the operation panel 13 is connected to the control terminal through a network.

[0053] Ventilation openings 12 are evenly arranged on the surface of the cabinet 11 facing the dehumidification box 2; ventilation holes are evenly arranged on the surface of the sliding box 31; baffle ventilation holes are evenly arranged on the surface of the lower baffle 33.

[0054] In the initial state, each sliding box 31 contains desiccant, and the sliding box 31 does not move downward under the action of gravity until the lower protrusion 351 is separated from the limit strip 22. The upper baffle 32 closes the feeding port 311, and the lower baffle 33 closes the recovery port 312. The supply box 4 contains unabsorbed desiccant.

[0055] During operation, the fan 15 rotates, and the outside air enters the interior of the cabinet 11 through the dehumidification box 2. When the outside air passes through each sliding box 31, the moisture in the air will be absorbed by the desiccant in the sliding box 31, and then the dried air enters the cabinet 11. As the sliding box 31 continuously dries the air, the weight of the sliding box 31 continuously increases after absorbing water, and then the load-bearing spring 36 is compressed, and the sliding box 31 gradually moves downward.

[0056] At the same time, the motor 61 drives the screw 6 to rotate, and the supply box 4 reciprocates up and down within the range of the dehumidification box 2. After a certain period of time, a certain sliding box 31 moves downward until the lower protrusion 351 is separated from the limit strip 22, and then the lower rotating block 35 rotates to the horizontal position. At this time, the water absorption of the desiccant in the sliding box 31 is close to the maximum value.

[0057] The screw 6 continues to drive the supply box 4 to move. When the supply box 4 moves upward from the bottom to be close to the sliding box 31, as the supply box 4 moves upward, the lower rotating block 35 abuts against the upper end of the limit frame 42, and the insertion plate 72 is inserted into the rear end of the lower protrusion 351 to prevent the lower rotating block 35 from rotating. Then the supply box 4 will drive the lower baffle 33 to move upward synchronously.

[0058] As the lower baffle 33 moves upward, the lower baffle 33 no longer closes the recovery port 312, and the desiccant in the sliding box 31 will fall into the recovery box 17 through the recovery port 312. At the same time, the lower ratchet 331 on the lower baffle 33 approaches the ratchet 371 and drives the ratchet 371 to rotate. Through the transmission of the transmission gear 37, the upper baffle 32 moves downward, the upper baffle 32 no longer closes the feeding port 311, and at the same time, the deflecting contact surface 342 abuts against the driving block 313 to force the upper rotating block 34 to rotate to the horizontal state.

[0059] When the lower baffle 33 moves upward to abut against the stop block 314, the lower baffle 33 cannot continue to move upward. At the same time, the sliding box 31 also moves to the upper limit position under the action of the supply box 4, and then the supply box 4 cannot continue to move upward. And the screw 6 continues to rotate, the sliding block 5 continues to move upward, and the connecting spring 51 is compressed.

[0060] The sliding post 52 on the sliding block 5 will abut against the driving inclined surface 71, and force the driving plate 7 to move through the driving inclined surface 71. The inserting plate 72 will separate from the lower protrusion 351, and the inserting plate 72 will no longer restrict the rotation of the lower rotating block 35. Furthermore, the connecting spring 51 releases its elastic force, driving the supply box 4 to move upward rapidly. The limiting frame 42 will push the lower rotating block 35 to rotate, so that the lower rotating block 35 rotates upward to the vertical position. Then the lower baffle 33 moves downward under the action of gravity, and the lower protrusion 351 abuts against the limiting strip 22 again. The lower baffle 33 moves downward to close the recovery port 312. At this time, all the desiccant in the sliding box 31 is discharged.

[0061] After that, the screw 6 rotates, and the sliding block 5 and the supply box 4 continue to move upward until the supply port 41 communicates with the feeding port 311. The desiccant in the supply box 4 quickly enters the sliding box 31 through the supply port 41 and the feeding port 311 to replenish the desiccant in the sliding box 31.

[0062] As the supply box 4 moves upward, the upper end of the limiting frame 42 abuts against the upper rotating block 34, and the inserting plate 72 is inserted behind the upper protrusion 341 to prevent the upper rotating block 34 from rotating. Furthermore, the upward movement of the supply box 4 will drive the upper baffle 32 to move upward synchronously until the upper baffle 32 moves to the upper limit position, and the baffle magnet 322 is attracted tightly by the fixed magnet, and the upper baffle 32 cannot move upward continuously. Therefore, the supply box 4 cannot move upward continuously either, and the sliding block 5 continues to move upward, and the connecting spring 51 is compressed. The sliding block 5 and the supply box 4 slide relative to each other, and the sliding post 52 abuts against the driving inclined surface 71, forcing the driving plate 7 to move, and the inserting plate 72 will separate from the upper protrusion 341.

[0063] After the inserting plate 72 separates from the upper protrusion 341, the inserting plate 72 no longer restricts the rotation of the upper baffle 32, and the upper baffle 32 no longer restricts the upward movement of the supply box 4. Furthermore, the connecting spring 51 pushes the supply box 4 to move upward rapidly and separates from the upper baffle 32. The upper rotating block 34 rotates downward to the vertical position under the action of gravity. Furthermore, the desiccant in the sliding box 31 is replaced.

Claims

1. Transformer tap AC voltage stabilizing device based on thyristor control, characterized by: The invention comprises a cabinet (11), a transformer (14), a fan (15) for cooling the transformer (14), and a dehumidification mechanism (16) for drying air flow; the dehumidification mechanism (16) comprises a dehumidification box (2), dehumidification units (3) arranged in a matrix on the dehumidification box (2), and a supply box (4) for replenishing desiccant for the dehumidification units (3); the dehumidification unit (3) comprises a sliding box (31) for accommodating desiccant; a feed port (311) is provided at the upper front end of the sliding box (31); a recovery port (312) is provided at the lower front end of the sliding box (31); the dehumidification unit (3) further comprises an upper baffle (32) for closing the feed port (311) and a lower baffle (33) for closing the recovery port (312).

2. The transformer tap AC voltage stabilizing device based on thyristor control according to claim 1, characterized in that: The front end of the dehumidification box (2) is evenly provided with connection ports (21) facing each sliding box (31); a lower rotating block (35) is rotatably connected to the lower baffle (33) and is arranged along the left-right direction with a rotating shaft; a lower protrusion (351) is arranged at an eccentric position of the lower rotating block (35); a limit bar (22) capable of abutting against the lower protrusion (351) is arranged in the connection port (21); the dehumidification unit (3) further comprises a load-bearing spring (36) for driving the sliding box (31) to move upward; when the overall weight of the sliding box (31) reaches a set value, the lower protrusion (351) separates from the limit bar (22), and the lower rotating block (35) rotates to a horizontal position. At this time, the upward movement of the supply box (4) drives the lower rotating block (35) and the lower baffle (33) to move upward synchronously, and the lower baffle (33) no longer closes the recovery port (312).

3. The transformer tap AC voltage stabilizing device based on thyristor control according to claim 2 is characterized in that: A limit frame (42) is provided at the lower end of the supply box (4); a driving plate (7) is slidably connected to the upper side of the supply box (4) in the left-right direction; a plug plate (72) located at the upper end of the limit frame (42) is provided on the driving plate (7); when a lower rotating block (35) is located in a horizontal position, the supply box (4) moves upward until the lower rotating block (35) abuts against the upper end of the limit frame (42), and the plug plate (72) is located at the lower protrusion (351 ) at the rear side, at this time, the plug plate (72) will prevent the lower rotating block (35) from rotating vertically, and then the supply box (4) will drive the lower rotating block (35) and the lower baffle (33) to move upward synchronously; when the driving plate (7) moves to separate the plug plate (72) from the lower protrusion (351), the lower baffle (33) will move downward under the action of its own gravity, the lower rotating block (35) will rotate to the vertical, and the lower protrusion (351) will be against the limit bar (22) again.

4. The transformer tap AC voltage stabilizing device based on thyristor control according to claim 3 is characterized in that: An upper rotating block (34) is rotatably connected to a rotating shaft and arranged in a left-right direction on the upper baffle plate (32); an upper protrusion (341) is arranged at an eccentric position on the upper rotating block (34); a driving block (313) is arranged at the front end of the sliding box (31); a deflection abutting surface (342) is arranged on the upper rotating block (34) and is abutted against the driving block (313) so as to rotate the upper rotating block (34) to a horizontal inclined distribution; the limit frame (42) and the plug plate (72) can abut against the upper rotating block (34) in a horizontal position and drive the upper baffle plate (32) to move upward.

5. The transformer tap AC voltage stabilizing device based on thyristor control according to claim 4 is characterized in that: The upper end of the upper baffle plate (32) is provided with a baffle magnet (322); the upper end of the sliding box (31) is provided with a fixed magnet capable of being tightly attracted to the baffle magnet (322); when the upper baffle plate (32) closes the feed port (311), the baffle magnet (322) is tightly attracted to the fixed magnet.

6. The transformer tap AC voltage stabilizing device based on thyristor control according to claim 4 is characterized in that: Screw rods (6) are provided on both sides of the supply box (4) in the cabinet (11); a sliding block (5) is connected to the screw rods (6); the upper end of the sliding block (5) is connected to the supply box (4) via a connecting spring (51); an inclined driving inclined surface (71) is provided on the driving plate (7) near the sliding block (5); a sliding column (52) is provided on the sliding block (5) and can abut against the driving inclined surface (71); and a stop block (314) is provided at the front end of the sliding box (31) to prevent the lower baffle (33) from moving upward.

7. The transformer tap AC voltage stabilizing device based on thyristor control according to claim 6 is characterized in that: The two screw rods (6) are connected to each other via a synchronous belt (62); and a motor (61) for driving one screw rod (6) to rotate is fixedly connected inside the cabinet (11).

8. The transformer tap AC voltage stabilizing device based on thyristor control according to claim 4 is characterized in that: The sliding box (31) is rotatably connected to a transmission gear (37); the transmission gear (37) is coaxially provided with a ratchet (371); the upper baffle plate (32) is provided with an upper rack (321) meshing with the transmission gear (37); and the lower baffle plate (33) is provided with a lower ratchet pawl (331) unidirectionally transmission-connected to the ratchet (371).

9. The transformer tap AC voltage stabilizing device based on thyristor control according to claim 1, characterized in that: A recovery box (17) for receiving fallen desiccant is provided in the cabinet (11) below the dehumidification box (2).

10. The transformer tap AC voltage stabilizing device based on thyristor control according to claim 1, characterized in that: An operation panel (13) is provided on the surface of the cabinet (11); the transformer (14) comprises a primary coil and a secondary coil; a saturated reactor connected to the primary coil and a DC coil with two same-name ends connected are also provided in the cabinet (11); the DC coil has a tap.

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