Transformer tap AC voltage stabilizing equipment based on thyristor control

Abstract

The present invention discloses a transformer tap AC voltage stabilization device based on thyristor control, belonging to the field of transformers. The transformer tap AC voltage stabilization device based on thyristor control includes a cabinet, a transformer, a fan for cooling the transformer, and a dehumidification mechanism for drying the airflow. The dehumidification mechanism includes a dehumidification box, dehumidification units arranged in a matrix on the dehumidification box, and a supply box for replenishing desiccant for the dehumidification units. The dehumidification units include a sliding box for containing the desiccant. The upper front end of the sliding box is provided with a feed port. The lower front end of the sliding box is provided with a recovery port. The dehumidification unit also includes an upper baffle for sealing the feed port and a lower baffle for sealing the recovery port.

Description

Technical Field

[0001] The present invention belongs to the field of transformers, and more particularly, relates to a transformer tap AC voltage stabilizing device based on thyristor control. Background Art

[0002] A smart substation primarily consists of two components: intelligent high-voltage equipment and a unified substation information platform. These components include intelligent transformers, intelligent high-voltage switchgear, and electronic transformers. The transformer is installed within the voltage stabilization equipment and cooled by fans.

[0003] When the transformer is used for a long time, if the humidity in the air is high, water droplets will condense on the surface of the transformer, and the transformer will be at risk of short circuit. 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 based on thyristor control, which can dry the air used to dissipate heat for the transformer.

[0005] The transformer tap AC voltage stabilizing device based on thyristor control of the present invention includes a cabinet, a transformer, a fan for cooling the transformer, and a dehumidification mechanism for drying the air flow; the dehumidification mechanism includes a dehumidification box, dehumidification units arranged in a matrix on the dehumidification box, and a supply box for replenishing desiccant for the dehumidification unit; the dehumidification unit includes a sliding box for accommodating desiccant; a feed port is provided at the upper front end of the sliding box; a recovery port is provided at the lower front end of the sliding box; the dehumidification unit also 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, the front end of the dehumidification box is evenly provided with connection ports that are opposite to each sliding box; the lower baffle is rotatably connected to a lower rotating block arranged along the left and right directions of the rotating shaft; the lower rotating block is provided with a lower protrusion at an eccentric position; a limit bar that can offset the lower protrusion is provided in the connection port; the dehumidification unit also includes a load-bearing spring that drives the sliding box to move upward; when the overall weight of the sliding box reaches the set value, the lower protrusion is separated from the limit bar, and the lower rotating block will rotate to a horizontal position. At this time, the upward movement of the supply box will drive 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 limit frame is provided at the lower end of the supply box; a driving plate is connected to the upper edge of the supply box for sliding in the left and right directions; a plug plate is provided on the driving plate and is located at the upper end of the limit frame; when a lower rotating block is in a horizontal position, the supply box moves upward until the lower rotating block is against the upper end of the limit frame, and the plug plate is located behind the lower protrusion. At this time, the plug 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 plug plate from the lower protrusion, the lower baffle will move downward under the action of its own gravity, the lower rotating block will rotate to vertical, and the lower protrusion will be against the limit bar again.

[0008] As a further improvement of the present invention, the upper baffle is rotatably connected to an upper rotating block arranged along the left and right directions of the rotating shaft; 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 deflection abutment surface is provided on the upper rotating block, which abuts against the driving block and thereby rotates the upper rotating block to a horizontal inclined distribution; the limit frame and the plug 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 being tightly attracted to the baffle magnet is provided at the upper end of the sliding box; when the upper baffle closes the feed port, the baffle magnet is tightly attracted to the fixed magnet.

[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 connected to the screw for transmission; the upper end of the sliding block is connected to the supply box by a connecting spring; an inclined driving slope is provided on the drive plate near the sliding block; a sliding column that can resist the driving slope is provided on the sliding block; a stop block is provided at the front end of the sliding box to prevent the lower baffle from moving upward.

[0011] As a further improvement of the present invention, the two screw rods are connected via a synchronous belt transmission; and a motor for driving one screw rod to rotate is fixedly connected inside the cabinet.

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

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

[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 saturated inductor connected to the primary coil and a DC coil with two like-named ends connected are also provided in the cabinet; the DC coil has a tap.

[0015] Compared to existing technologies, the present invention offers the following advantages: By installing multiple sliding boxes, this solution dries the air entering the cabinet, preventing moisture condensation on the transformer surface that could cause short circuits. Furthermore, each sliding box is relatively independent, allowing desiccant replacement at any location using a refill box.

[0016] The supply box in this solution contains unabsorbed desiccant, which can be added to the sliding box. Furthermore, as the supply box moves upward, the limiting frame, insert plate, and lower rotating block cooperate to drive the lower baffle upward, freeing the recovery port and allowing the desiccant in the sliding box to fall into the recycling bin. The limiting frame, insert plate, and upper rotating block also cooperate to drive the upper baffle upward, allowing it to reclose the feed port.

[0017] In this solution, when the lower baffle moves upward, the lower baffle is not only used to open the recovery port, but also drives the upper baffle to move downward through the ratchet and the transmission gear, so that the upper baffle no longer closes the feed port.

[0018] This solution utilizes a sliding block and connecting springs to not only drive the supply box up and down, but also, if the supply box becomes unable to move upward, the sliding post on the sliding block cooperates with the driving ramp to move the drive plate. This causes the insert plate on the drive plate to move, separating from the lower protrusion, which in turn separates the lower baffle from the supply box. Gravity then forces the lower baffle downward. The insert plate then separates from the upper protrusion, separating the upper baffle from the supply box, facilitating movement of the supply box toward another sliding box. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 It is a schematic cross-sectional view of the present invention;

[0021] Figure 3 Schematic diagram of the structure of the dehumidification mechanism of the present invention;

[0022] Figure 4 Schematic diagram of the structure of the dehumidification unit of the present invention;

[0023] Figure 5 Schematic diagram of the cross-sectional structure of the dehumidification unit of the present invention;

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

[0025] Figure 7 This is a structural diagram of the sliding block and the driving plate of the present invention;

[0026] Figure 8 This is a schematic structural diagram of the present invention when the plugboard is plugged into the rear side of the lower protrusion;

[0027] Figure 9 This is a schematic structural diagram of the sliding box of the present invention in its initial position;

[0028] Figure 10 This is a schematic structural diagram of the present invention when the lower rotating block rotates to a horizontal position;

[0029] Figure 11 This is a schematic structural diagram of the present invention when the lower rotating block abuts against the upper end of the limiting frame;

[0030] Figure 12 This is a schematic diagram of the structure of the present invention when the inserting plate is separated from the lower protrusion;

[0031] Figure 13 This is a schematic structural diagram of the present invention when the upper rotating block abuts against the upper end of the limiting frame;

[0032] Figure 14 It is a structural schematic diagram of the present invention when the inserting plate is separated from the upper protrusion.

[0033] Description of the numbers in the figure:

[0034] 11. Cabinet; 12. Ventilation port; 13. Operation panel; 14. Transformer; 15. Fan; 16. Dehumidification mechanism; 17. Recovery box; 2. Dehumidification box; 21. Connection port; 22. Limit bar; 3. Dehumidification unit; 31. Sliding box; 311. Feed port; 312. Recovery port; 313. Drive block; 314. Stop block; 32. Upper baffle; 321. Upper rack; 322. Baffle magnet; 33. Lower baffle; 331. Lower pawl; 34. Upper rotating block; 341. Upper protrusion; 342. Deflection abutment surface; 35. Lower rotating block; 351. Lower protrusion; 36. Load-bearing spring; 37. Transmission gear; 371. Ratchet; 4. Supply box; 41. Supply port; 42. Limit rack;

[0035] 5. Sliding block; 51. Connecting spring; 52. Sliding column; 6. Screw; 61. Motor; 62. Synchronous belt; 7. Drive plate; 71. Drive ramp; 72. Insert plate. DETAILED DESCRIPTION

[0036] Specific embodiment 1: Please refer to Figures 1-14The transformer tap AC voltage stabilizing device based on thyristor control includes a cabinet 11, a transformer 14, a fan 15 for cooling the transformer 14, and a dehumidification mechanism 16 for airflow drying; 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 for the dehumidification unit 3; the dehumidification unit 3 includes 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 also includes an upper baffle 32 for closing the feed port 311 and a lower baffle 33 for closing the recovery port 312.

[0037] The supply box 4 is provided at the front end of the dehumidification box 2 ; the supply box 4 is provided at the lower rear end with a supply port 41 that can face the feed port 311 and then replenish the desiccant into the sliding box 31 .

[0038] The front end of the dehumidifying box 2 is evenly provided with a connection port 21 that is opposite to each sliding box 31; the lower baffle 33 is rotatably connected to a lower rotating block 35 set in the left and right directions of the rotating shaft; the lower rotating block 35 is provided with a lower protrusion 351 at an eccentric position; a limit bar 22 that can abut against the lower protrusion 351 is provided in the connection port 21; the limit bar 22 is arranged longitudinally; when the lower rotating block 35 is vertical, the lower protrusion 351 abuts against the limit bar 22, thereby preventing the lower rotating block 35 from rotating to the horizontal position, at this time the limit bar 22 is flush with the front end of the lower baffle 33 The dehumidification unit 3 also 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 moisture absorbed by the desiccant is close to saturation, the lower protrusion 351 is separated from the limit bar 22, and the lower rotating block 35 will rotate to a horizontal position. 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 is provided between the lower rotating block 35 and the lower baffle 33 to drive the lower rotating block 35 to rotate toward a horizontal position.

[0040] When the lifting block 35 is lifted up, the locking plate 72 will be in the locked state, and the locking plate 73 will be in the locked state after the lifting of the locking plate 73.

[0041] The upper baffle 32 is rotatably connected to an upper rotating block 34 set in the left and right directions with a rotating shaft; an upper protrusion 341 is set at an eccentric position on the upper rotating block 34; a driving block 313 is set at the front end of the sliding box 31; a deflection abutting surface 342 is set on the upper rotating block 34, which abuts against the driving block 313 and thus rotates the upper rotating block 34 to a horizontal inclined distribution; the limit frame 42 and the inserting 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 feed 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 will not hinder the up and down movement of the supply box 4; when the upper baffle 32 moves downward to the point where the feed port 311 is not closed, the deflected abutment surface 342 abuts against the driving block 313, and forces the upper rotating block 34 to rotate to a horizontal position, so that the limit frame 42 and the insert plate 72 can drive the upper baffle 32 to move upward.

[0043] The upper end of the upper baffle 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 32 closes the feed port 311, the baffle magnet 322 is tightly attracted to the fixed magnet.

[0044] Screws 6 are provided on both sides of the supply box 4 in the cabinet 11; a sliding block 5 is connected to the screw 6 for transmission; the upper end of the sliding block 5 is connected to the supply box 4 via a connecting spring 51; an inclined driving slope 71 is provided on the drive plate 7 near the sliding block 5; a sliding column 52 that can abut against the driving slope 71 is provided on the sliding block 5; a stop block 314 is provided at the front end of the sliding box 31 to prevent the lower baffle 33 from moving upward.

[0045] When the supply box 4 drives the lower baffle 33 to move upward synchronously through the limit frame 42 and the insert plate 72 until the lower baffle 33 and the stop block 314 are in contact, the lower baffle 33 can no longer move upward, and the limit frame 42 and the insert plate 72 prevent the supply box 4 from moving upward. At this time, the screw 6 continues to rotate, driving the sliding block 5 to move up and down, and then the connecting spring 51 contracts, and the sliding block 5 moves relative to the supply box 4, so that the sliding column 52 and the driving inclined surface 71 are in contact, forcing the driving plate 7 to slide, and the insert plate 72 is separated 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 insert plate 72 until the upper baffle 32 closes the feed port 311, the upper baffle 32 cannot continue to move upward, and the supply box 4 cannot continue to move upward, and then the sliding block 5 moves relative to the supply box 4, and the sliding column 52 forces the insert plate 72 to separate from the upper protrusion 341 through the driving inclined surface 71, and then 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 in the cabinet 11 .

[0048] 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 32 is provided with an upper rack 321 meshing with the transmission gear 37 ; the lower baffle 33 is provided with a lower pawl 331 unidirectionally connected to the ratchet 371 .

[0049] When the lower baffle 33 closes the recovery port 312, the lower pawl 331 is located below the ratchet 371; after the lower baffle 33 moves upward until the lower pawl 331 and the ratchet 371 are in contact, the lower pawl 331 drives the ratchet 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 pawl 331 does not drive the ratchet 371 to rotate.

[0050] A recovery box 17 for receiving fallen desiccant is provided below the dehumidification box 2 in the cabinet 11 .

[0051] An operation panel 13 is provided on the surface of the cabinet 11; the transformer 14 includes a primary coil and a secondary coil; a saturated inductor connected to the primary coil and a DC coil with two like-named ends connected are also provided in the cabinet 11; the DC coil has a tap.

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

[0053] The surface of the cabinet 11 is evenly provided with ventilation openings 12 at positions corresponding to the dehumidification box 2 ; the surface of the sliding box 31 is evenly provided with ventilation holes; the surface of the lower baffle 33 is evenly provided with baffle ventilation holes.

[0054] In the initial state, each sliding box 31 contains desiccant, and the sliding box 31 has not moved downward under the action of gravity until the lower protrusion 351 separates from the limiting bar 22. The upper baffle 32 closes the feed port 311, and the lower baffle 33 closes the recovery port 312. The supply box 4 contains desiccant that has not absorbed water.

[0055] During operation, the fan 15 rotates, drawing outside air through the dehumidification box 2 and into the cabinet 11. As the outside air passes through each sliding box 31, moisture in the air is absorbed by the desiccant inside the sliding box 31, and the dried air then enters the cabinet 11. As the sliding box 31 continues to dry the air, its weight increases after absorbing moisture, compressing the load-bearing spring 36 and causing the sliding box 31 to gradually move downward.

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

[0057] The screw 6 continues to drive the supply box 4. When the supply box 4 moves upward from the bottom to the sliding box 31, the lower rotating block 35 abuts against the upper end of the limit frame 42. The insert plate 72 engages the rear end of the lower protrusion 351, preventing the lower rotating block 35 from rotating. The supply box 4 then drives the lower baffle 33 to move upward synchronously.

[0058] As the lower baffle 33 moves upward, it no longer seals the recovery port 312, and the desiccant in the sliding box 31 falls through the recovery port 312 into the recovery bin 17. Simultaneously, the lower pawl 331 on the lower baffle 33 approaches the ratchet 371 and drives the ratchet 371 to rotate. Driven by the transmission gear 37, the upper baffle 32 moves downward, no longer sealing the feed port 311. Simultaneously, the deflected abutment surface 342 abuts against the drive block 313, forcing the upper rotating block 34 to rotate to a horizontal position.

[0059] When the lower baffle 33 moves upward until it contacts the stop block 314, the lower baffle 33 cannot move further upward. Simultaneously, the slide box 31 moves to the upper limit position under the action of the supply box 4, and the supply box 4 cannot move further upward. However, the screw 6 continues to rotate, the slide block 5 continues to move upward, and the connecting spring 51 is compressed.

[0060] The sliding post 52 on the sliding block 5 will contact the driving bevel 71, forcing the driving plate 7 to move. The insert plate 72 will then separate from the lower protrusion 351, and the insert plate 72 will no longer restrict the rotation of the lower rotating block 35. The connecting spring 51 will then release its force, driving the supply box 4 to move rapidly upward. The stop frame 42 will then push the lower rotating block 35 to rotate, causing it to rotate upward until it is vertical. The lower baffle 33 then moves downward under the action of gravity. The lower protrusion 351 will once again contact the stop bar 22, and the lower baffle 33 will move downward to close the recovery port 312. At this point, the desiccant in the sliding box 31 will be completely 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 is connected to the feed port 311. The desiccant in the supply box 4 quickly enters the sliding box 31 through the supply port 41 and the feed port 311 to replenish the desiccant for the sliding box 31.

[0062] As the supply cassette 4 moves upward, the upper end of the stop bracket 42 abuts against the upper rotating block 34, and the insert plate 72 engages the rear end of the upper protrusion 341, preventing the upper rotating block 34 from rotating. The upward movement of the supply cassette 4 then simultaneously drives the upper baffle 32 upward until it reaches its upper limit, where the baffle magnet 322 engages the fixed magnet, preventing further upward movement. Consequently, the supply cassette 4 cannot move further upward, and the sliding block 5 continues to move upward, compressing the connecting spring 51. The sliding block 5 and the supply cassette 4 slide relative to each other, and the sliding post 52 abuts the driving ramp 71, forcing the drive plate 7 to move, and the insert plate 72 separates from the upper protrusion 341.

[0063] After the insert plate 72 separates from the upper protrusion 341, it 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. The connecting spring 51 then pushes the supply box 4 upward rapidly, freeing it from the upper baffle 32. The upper rotating block 34 rotates downward under the action of gravity until it is vertical. The desiccant in the sliding box 31 can then be 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 unit (3); the dehumidification unit (3) comprises a sliding box (31) for accommodating desiccant; a feed port (311) is provided at an upper front end of the sliding box (31); a recovery port (312) is provided at a 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); The front end of the dehumidification box (2) is evenly provided with a connection port (21) facing each sliding box (31); the lower baffle (33) is rotatably connected to a lower rotating block (35) arranged along the left and right directions of the rotating shaft; the lower rotating block (35) is provided with a lower protrusion (351) at an eccentric position; the connection port (21) is provided with a limit bar (22) capable of abutting against the lower protrusion (351); the dehumidification unit (3) also includes 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) 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); A limiting frame (42) is provided at the lower end of the supply box (4); a driving plate (7) is connected to the supply box (4) in a sliding manner in the left and right directions; a plug-in plate (72) is provided on the driving plate (7) and is located at the upper end of the limiting frame (42); 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 limiting frame (42), and the plug-in plate (72) is located at the lower protrusion (351 ) at the rear side, at this time the insert 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 insert 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 again abut against the limit bar (22).

2. The transformer tap AC voltage stabilizing device based on thyristor control according to claim 1, characterized in that: The upper baffle (32) is rotatably connected to an upper rotating block (34) arranged along a rotating shaft in a left-right direction; an upper protrusion (341) is provided at an eccentric position on the upper rotating block (34); a driving block (313) is provided at the front end of the sliding box (31); a deflection abutting surface (342) is provided on the upper rotating block (34) for abutting against the driving block (313) and thereby causing the upper rotating block (34) to rotate to a horizontal inclined distribution; the limiting frame (42) and the inserting plate (72) can abut against the upper rotating block (34) in a horizontal position and drive the upper baffle (32) to move upward.

3. The transformer tap AC voltage stabilizing device based on thyristor control according to claim 2, characterized in that: A baffle magnet (322) is provided at the upper end of the upper baffle (32); a fixed magnet capable of being tightly attracted to the baffle magnet (322) is provided at the upper end of the sliding box (31); when the upper baffle (32) closes the feed port (311), the baffle magnet (322) is tightly attracted to the fixed magnet.

4. The transformer tap AC voltage stabilizing device based on thyristor control according to claim 2, 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 rod (6); the upper end of the sliding block (5) is connected to the supply box (4) via a connecting spring (51); an inclined driving slope (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 slope (71); a stop block (314) is provided at the front end of the sliding box (31) to prevent the lower baffle (33) from moving upward.

5. The transformer tap AC voltage stabilizing device based on thyristor control according to claim 4, characterized in that: The two screw rods (6) are connected to each other via a synchronous belt (62); a motor (61) for driving one screw rod (6) to rotate is fixedly connected to the cabinet (11).

6. The transformer tap AC voltage stabilizing device based on thyristor control according to claim 2, characterized in that: The sliding box (31) is rotatably connected to a transmission gear (37); a ratchet (371) is coaxially arranged on the transmission gear (37); an upper rack (321) meshing with the transmission gear (37) is arranged on the upper baffle (32); and a lower pawl (331) unidirectionally connected to the ratchet (371) is arranged on the lower baffle (33).

7. 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 below the dehumidification box (2) in the cabinet (11).

8. 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) includes a primary coil and a secondary coil; a saturated reactor connected to the primary coil and a DC coil with two like-named ends connected are also provided in the cabinet (11); the DC coil has a tap.

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