High-effect AC voltage stabilizer for tap adjustment of silicon controlled rectifier drive transformer

Abstract

The invention discloses an alternating-current voltage stabilizer for tap adjustment of a high-effect silicon controlled rectifier drive transformer, and belongs to the field of stabilizers. An alternating-current voltage stabilizer for tap adjustment of a high-effect silicon controlled rectifier drive transformer comprises a cabinet, the transformer, a fan for heat dissipation and a dehumidifier for absorbing moisture in air. The dehumidifier comprises a shell and a plurality of dehumidification boxes located in the shell. The shell comprises a dehumidification cavity and a regeneration cavity; the dehumidification box comprises a first end cover, a second end cover and a corrugated pipe connected with the first end cover and the second end cover. Feeding mechanisms are respectively mounted in the dehumidification cavity and the regeneration cavity; the dehumidification box circularly moves between the dehumidification cavity and the regeneration cavity, so that when the dehumidification box is in the dehumidification cavity, the dehumidification box absorbs moisture in air entering the cabinet, and when the dehumidification box is in the regeneration cavity, hot air dries and regenerates a drying agent in the dehumidification box.

Description

Technical Field

[0001] The present invention belongs to the field of voltage stabilizers, and more specifically, relates to an AC voltage stabilizer with high-efficiency thyristor-driven transformer tap adjustment. Background Art

[0002] The smart grid emphasizes the intelligence, automation, and two-way interaction of the power system, and the voltage stabilizer plays an important role in it. The access of a large number of distributed energy sources in the smart grid may cause voltage fluctuations, and the voltage stabilizer can respond quickly to balance the grid voltage. The transformer is an important component of the voltage stabilizer. During long-term operation, the transformer will generate heat, and thus heat dissipation inside the voltage stabilizer is required. The current common method of heat dissipation is to draw external air into the voltage stabilizer through a fan, and the air contains moisture. After long-term operation, for air with high humidity, the moisture in the air will adhere to the surface of the transformer, forming small water droplets, so the transformer has a risk of short circuit. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an AC voltage stabilizer with high-efficiency thyristor-driven transformer tap adjustment, which can dry the air entering the voltage stabilizer and extend the service life of the desiccant.

[0004] The AC voltage stabilizer with high-efficiency thyristor-driven transformer tap adjustment of the present invention includes a cabinet, a transformer, a fan for heat dissipation, and a dehumidifier for absorbing moisture in the air; the dehumidifier includes a housing and a plurality of dehumidification boxes located inside the housing; the housing includes a dehumidification chamber and a regeneration chamber; the dehumidification box includes a first end cover, a second end cover, and a corrugated pipe connecting the first end cover and the second end cover; feeding mechanisms are respectively installed in the dehumidification chamber and the regeneration chamber; the feeding mechanism includes a main screw and a sub-screw arranged in parallel and rotating synchronously; the main screw is provided with an adjusting thread and a sliding thread that are in transmission connection with the first end cover; the adjusting thread and the sliding thread are connected; the sub-screw is provided with a synchronous thread that is in transmission connection with the second end cover; the pitch of the adjusting thread is greater than the pitch of the sliding thread; when the sliding thread and the synchronous thread are respectively engaged with the dehumidification box, the first end cover and the second end cover move synchronously; when the adjusting thread and the synchronous thread are respectively engaged with the dehumidification box, the first end cover and the second end cover slide relative to each other.

[0005] As a further improvement of the present invention, the housing further includes regeneration channels and reset channels located on both sides and connecting the regeneration chamber and the dehumidification chamber; the main screw located in the dehumidification chamber is the upper main screw, and the sub-screw is the upper sub-screw; the main screw located in the regeneration chamber is the lower main screw, and the sub-screw is the lower sub-screw; the adjusting thread on the upper main screw is located in the regeneration channel, and the adjusting screw on the lower main screw is located in the reset channel.

[0006] As a further improvement of the present invention, an upper main gear is coaxially arranged on the upper main screw; an upper sub-gear is coaxially arranged on the upper sub-screw; the upper main gear meshes with the upper sub-gear; a feed motor for driving the upper main screw to rotate is fixedly connected inside the cabinet.

[0007] As a further improvement of the present invention, two main accommodation grooves which are centrosymmetrically distributed and communicate with the side wall of the dehumidification box are arranged on the dehumidification box; auxiliary accommodation grooves are arranged in each main accommodation groove; the main accommodation grooves are used for accommodating the main screws; the auxiliary accommodation grooves are used for accommodating the sub-screws; main protrusions which cooperate with the adjusting thread and the sliding thread are arranged in the main accommodation grooves on the first end cover; auxiliary protrusions which cooperate with the synchronization thread are arranged in the auxiliary accommodation grooves on the second end cover.

[0008] As a further improvement of the present invention, the dehumidifier further comprises a lifting frame; a push plate which longitudinally slides in the regeneration channel and the reset channel is arranged on the lifting frame; the push plate is used for pushing the dehumidification box to longitudinally move in the regeneration channel and the reset channel.

[0009] As a further improvement of the present invention, an obstacle avoidance plate is rotatably connected to the middle of the push plate; the rotating shaft of the obstacle avoidance plate is parallel to the rotating shaft of the lower main screw; when the lifting frame is at the upper limit position, the push plate is located in the middle of the regeneration channel and the reset channel, the obstacle avoidance plate is horizontally arranged, and the regeneration cavity and the dehumidification cavity are not communicated with each other.

[0010] As a further improvement of the present invention, a turntable is rotatably connected to the side wall of the housing; the lower main screw and the lower sub-screw are respectively rotatably connected to the eccentric positions of the turntable; a lower main gear is coaxially arranged on the lower main screw; a lower sub-gear which meshes with the lower main gear is coaxially arranged on the lower sub-screw; the turntable is coaxially arranged with the dehumidification box located in the regeneration cavity.

[0011] As a further improvement of the present invention, a driving gear ring which is coaxially arranged with the turntable is rotatably connected to the housing; the driving gear ring meshes with the lower main gear; a rotation stopping groove is arranged on the side wall of the turntable; a rotation stopping plate which can abut against the rotation stopping groove to prevent the turntable from rotating is arranged on the lifting frame; a gear ring motor for driving the driving gear ring to rotate is fixedly connected to the side wall of the housing.

[0012] As a further improvement of the present invention, the dehumidifier further comprises a hot air blower for supplying hot air into the regeneration cavity.

[0013] As a further improvement of the present invention, a control panel is arranged on the surface of the cabinet; a plurality of taps are arranged on the transformer; a thyristor unit for switching the taps is arranged inside the control panel.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This solution controls the dehumidification box to move cyclically between the dehumidification chamber and the regeneration chamber. When the dehumidification box is in the dehumidification chamber, the dehumidification box absorbs the moisture in the air entering the cabinet, and the dried air cools the transformer, avoiding short circuits of the transformer caused by humid air. When the dehumidification box is in the regeneration chamber, hot air dries and regenerates the desiccant in the dehumidification box, prolonging the service life of the desiccant and reducing the replacement frequency of the desiccant.

[0015] In this solution, by setting the main screw and the auxiliary screw, since the pitches of the adjusting thread and the sliding thread are different, when the main screw and the auxiliary screw drive the dehumidification box to move, the distance between the first end cover and the second end cover is changed, so that the dehumidification boxes in the dehumidification chamber are all in the dehumidification state, and the desiccants in the dehumidification boxes are closely arranged, facilitating the absorption of moisture in the air. And the dehumidification boxes in the regeneration chamber are in the regeneration state, and the desiccants in the dehumidification boxes are scattered at various positions in the dehumidification box, increasing the contact area with the hot air and improving the regeneration efficiency of the desiccant.

[0016] The driving gear ring in this solution can not only drive the lower main screw and the lower auxiliary screw to rotate, so that the dehumidification box moves in the regeneration chamber, but also drive the turntable to rotate, so that the turntable drives the lower main screw, the lower auxiliary screw and the dehumidification box to rotate circumferentially. Then the desiccant tumbles in the dehumidification box, further increasing the regeneration efficiency of the desiccant.

[0017] In this solution, through the longitudinal movement of the lifting frame, the dehumidification box is driven to move in the reset channel and the regeneration channel, and then the dehumidification box is cyclically moved between the dehumidification chamber and the regeneration chamber. The lifting frame can also control whether the turntable rotates through the anti-rotation plate. When the anti-rotation plate abuts against the anti-rotation groove, the driving gear ring drives the lower main screw and the lower auxiliary screw to rotate self, and when the anti-rotation plate does not abut against the anti-rotation groove, the driving gear ring drives the turntable to rotate circumferentially. When the lifting frame is at the upper limit position, the push plate separates the dehumidification chamber and the regeneration chamber from each other and does not communicate with each other. Then, after the hot air enters the regeneration chamber, it will not enter the dehumidification chamber, avoiding interfering with the normal operation of the dehumidification chamber.

[0018] In this solution, the thyristor unit is used to switch the taps of the transformer, and combined with the control panel, the voltage can be adjusted quickly and accurately to ensure the stability of the output voltage. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0021] Figure 3 is a schematic cross-sectional structural diagram of the dehumidifier of the present invention;

[0022] Figure 4 is a schematic cross-sectional structural diagram of the housing of the present invention;

[0023] Figure 5 Schematic diagram of the disassembled structure of the dehumidifier of the present invention;

[0024] Figure 6 Schematic diagram of the structure of the feeding mechanism of the present invention;

[0025] Figure 7 Schematic cross-sectional view of the dehumidification box of the present invention;

[0026] Figure 8 Schematic diagram of the structure of the lifting frame of the present invention;

[0027] Figure 9 Schematic diagram of the structure of the lifting frame when it is in the upper limit position;

[0028] Figure 10 Schematic diagram of the structure of the lifting frame when it passes downward through the lower main screw.

[0029] Explanation of the reference numerals in the figure:

[0030] 1. Cabinet; 11. Control panel; 12. Ventilation hole; 13. Transformer; 14. Fan; 15. Dehumidifier; 2. Outer shell; 21. Regeneration channel; 22. Regeneration chamber; 23. Reset channel; 24. Dehumidification chamber; 3. Dehumidification box; 31. First end cover; 311. Main protrusion; 32. Second end cover; 321. Sub-protrusion; 33. Bellows; 34. Main storage groove; 35. Sub-storage groove; 4. Feeding mechanism; 401. Main screw; 402. Sub-screw; 41. Upper main screw; 411. Adjusting thread; 412. Sliding thread; 413. Upper main gear; 42. Upper sub-screw; 421. Synchronous thread; 422. Upper sub-gear; 43. Feeding motor; 51. Lower main screw; 511. Lower main gear; 52. Lower sub-screw; 521. Lower sub-gear; 53. Turntable; 531. Anti-rotation groove; 54. Driving tooth ring; 55. Tooth ring motor; 6. Lifting frame; 61. Pushing plate; 62. Obstacle avoidance plate; 63. Anti-rotation plate; 7. Electric push rod. Detailed implementation manners

[0031] Detailed embodiment 1: Please refer to Figures 1 - 10High-efficiency thyristor-driven transformer tap-adjusting AC voltage stabilizer, including a cabinet 1, a transformer 13, a fan 14 for heat dissipation, and a dehumidifier 15 for absorbing moisture in the air; the dehumidifier 15 includes a housing 2 and a plurality of dehumidification boxes 3 located inside the housing 2; the housing 2 includes a dehumidification chamber 24 and a regeneration chamber 22; the dehumidification box 3 includes a first end cover 31, a second end cover 32, and a corrugated pipe 33 connecting the first end cover 31 and the second end cover 32; a feeding mechanism 4 is respectively installed in the dehumidification chamber 24 and the regeneration chamber 22; the feeding mechanism 4 includes a main screw 401 and a secondary screw 402 that are arranged in parallel and rotate synchronously; the main screw 401 is provided with an adjusting thread 411 and a sliding thread 412 that are drivingly connected to the first end cover 31; the adjusting thread 411 and the sliding thread 412 are connected; the secondary screw 402 is provided with a synchronous thread 421 that is drivingly connected to the second end cover 302; the pitch of the adjusting thread 411 is greater than the pitch of the sliding thread 412; when the sliding thread 412 and the synchronous thread 421 are respectively engaged with the dehumidification box 3, the first end cover 31 and the second end cover 32 move synchronously; when the adjusting thread 411 and the synchronous thread 421 are respectively engaged with the dehumidification box 3, the first end cover 31 and the second end cover 32 slide relative to each other.

[0032] The surface of the dehumidification box 3 is evenly provided with fine through holes; the dehumidification box 3 is filled with a desiccant; when the first end cover 31 and the second end cover 32 are in the limit position of approaching each other, the dehumidification box 3 is in the dehumidification state, the volume of the dehumidification box 3 is the smallest, and the desiccant fills the dehumidification box 3; when the first end cover 31 and the second end cover 32 are in the limit position of moving away from each other, the dehumidification box 3 is in the regeneration state, the volume of the dehumidification box 3 is the largest, and the desiccant only covers the lower part of the dehumidification box 3, and at this time, the contact area between the desiccant and the outside world is the largest.

[0033] Each dehumidification box 3 in the regeneration chamber 22 is in the regeneration state, and each dehumidification box 3 in the dehumidification chamber 24 is in the dehumidification state.

[0034] The regeneration chamber 22 and the dehumidification chamber 24 are horizontally distributed; the side wall of the cabinet 1 is provided with a ventilation hole 12 facing the dehumidification chamber 24.

[0035] The housing 2 further includes a regeneration channel 21 and a reset channel 23 located on both sides and connecting the regeneration chamber 21 and the dehumidification chamber 24; the main screw 401 in the dehumidification chamber 24 is the upper main screw 41, and the secondary screw 402 is the upper secondary screw 42; the main screw 401 in the regeneration chamber 22 is the lower main screw 51, and the secondary screw 402 is the lower secondary screw 52; the adjusting thread 411 on the upper main screw 41 is located in the regeneration channel 21, and the adjusting screw 411 on the lower main screw 51 is located in the reset channel 23.

[0036] When the dehumidification box 3 in the dehumidification chamber 24 moves towards the regeneration channel 21, the first end cap 31 moves from the sliding thread 412 to the adjusting thread 411. Then, as the upper main screw 41 and the upper auxiliary screw 42 rotate synchronously, the moving stroke of the first end cap 31 is greater than that of the second end cap 32. As a result, the first end cap 31 and the second end cap 32 move away from each other. Finally, when the dehumidification box 3 moves from the dehumidification chamber 24 into the regeneration channel 21, the dehumidification box 3 is in the regeneration state.

[0037] When the dehumidification box 3 in the regeneration chamber 22 moves towards the reset channel 23, the first end cap 31 moves from the sliding thread 412 to the adjusting thread 411. Then, as the lower main screw 51 and the lower auxiliary screw 52 rotate synchronously, the first end cap 31 and the second end cap 32 move closer to each other. Finally, when the dehumidification box 3 moves from the regeneration chamber 22 into the reset channel 23, the dehumidification box 3 is in the dehumidification state.

[0038] The upper main screw 41 is coaxially provided with an upper main gear 413; the upper auxiliary screw 42 is coaxially provided with an upper auxiliary gear 422; the upper main gear 413 meshes with the upper auxiliary gear 422; a feed motor 43 for driving the rotation of the upper main screw 41 is fixedly connected inside the cabinet 1.

[0039] Two main accommodation grooves 34 that are symmetrically distributed about the center and communicate with the side wall of the dehumidification box 3 are provided on the dehumidification box 3; auxiliary accommodation grooves 35 are provided in each main accommodation groove 34; the main accommodation grooves 34 are used to accommodate the main screw 401; the auxiliary accommodation grooves 35 are used to accommodate the auxiliary screw 402; main protrusions 311 that cooperate with the adjusting thread 4111 and the sliding thread 412 are provided in the main accommodation grooves 34 on the first end cap 31; auxiliary protrusions 321 that cooperate with the synchronous thread 421 are provided in the auxiliary accommodation grooves 35 on the second end cap 32.

[0040] When the dehumidification box 3 is located inside the housing 2, the rotating shaft of the dehumidification box 3 is horizontally arranged, and the rotating shafts of the main screw 401 and the auxiliary screw 402 are also horizontally arranged, and the openings of the main accommodation grooves 34 face the vertical direction.

[0041] After the dehumidification box 3 moves from the dehumidification chamber 24 into the regeneration channel 21, the dehumidification box 3 moves downward along the regeneration channel 21. As a result, the dehumidification box 3 faces the regeneration chamber 22, and the dehumidification box 3 cooperates with the lower main screw 51 and the lower auxiliary screw 52.

[0042] The dehumidifier 15 further includes a lifting frame 6; a push plate 61 that longitudinally slides in the regeneration channel 21 and the reset channel 23 is provided on the lifting frame 6; the push plate 61 is used to push the dehumidification box 3 to longitudinally move in the regeneration channel 21 and the reset channel 23.

[0043] A barrier avoidance plate 62 is rotatably connected to the middle of the push plate 61; the rotating shaft of the barrier avoidance plate 62 is parallel to the rotating shaft of the lower main screw 51; when the lifting frame 6 is at the upper limit position, the push plate 61 is located in the middle of the regeneration channel 21 and the reset channel 23, the barrier avoidance plate 62 is horizontally arranged, and the regeneration chamber 22 and the dehumidification chamber 24 are not communicated with each other; when the lifting frame 6 moves up and down, the barrier avoidance plate 62 will abut against the lower main screw 51 and the lower auxiliary screw 52 and rotate, so that the lifting frame 6 can pass through the lower main screw 51 and the lower auxiliary screw 52.

[0044] A torsion spring for driving the barrier avoidance plate 62 to move to the horizontal is arranged between the barrier avoidance plate 62 and the lifting frame 6; an electric push rod 7 for driving the lifting frame 6 to move longitudinally is fixedly connected in the cabinet 1.

[0045] A turntable 53 is rotatably connected to the side wall of the outer shell 2; the lower main screw 51 and the lower auxiliary screw 52 are respectively rotatably connected to the eccentric positions of the turntable 53; a lower main gear 511 is coaxially arranged on the lower main screw 51; a lower auxiliary gear 521 meshing with the lower main gear 511 is coaxially arranged on the lower auxiliary screw 52; the turntable 53 is coaxially arranged with the dehumidification box 3 located in the regeneration chamber 22.

[0046] When the lower main screw 51 and the lower auxiliary screw 52 rotate along their own axes, the lower main screw 51 and the lower auxiliary screw 52 drive the dehumidification box 3 to move in the regeneration chamber 22; when the turntable 53 rotates, the turntable 53 drives the lower main screw 51 and the lower auxiliary screw 52 to rotate circumferentially synchronously, and further the dehumidification boxes 3 in the regeneration chamber 22 also rotate circumferentially synchronously.

[0047] A driving gear ring 54 coaxially arranged with the turntable 53 is rotatably connected to the outer shell 2; the driving gear ring 54 meshes with the lower main gear 511; a rotation stop groove 531 is arranged on the side wall of the turntable 53; a rotation stop plate 63 capable of abutting against the rotation stop groove 531 to prevent the turntable 53 from rotating is arranged on the lifting frame 6; a gear ring motor 55 for driving the driving gear ring 54 to rotate is fixedly connected to the side wall of the outer shell 2.

[0048] When the lifting frame 6 is at the upper limit position, the rotation stop plate 63 is separated from the rotation stop groove 531, and at this time the driving gear ring 54 drives the turntable 53 to rotate synchronously; when the lifting frame 6 is at the lower limit position, the rotation stop plate 63 abuts against the rotation stop groove 531, and at this time the turntable 53 cannot rotate, and the driving gear ring 54 drives the lower main screw 51 to rotate self.

[0049] The dehumidifier 15 further includes a hot air blower for supplying hot air into the regeneration chamber 22.

[0050] A control panel 11 is arranged on the surface of the cabinet 1; a plurality of taps are arranged on the transformer 13; a thyristor unit for switching taps is arranged in the control panel 11.

[0051] In the initial state, the lifting frame 6 is located at the upper limit position. At the upper end of the push plate 61 in the reset channel 23, there is a dehumidification box 3, which cooperates with the upper main screw 41 and the upper auxiliary screw 42.

[0052] When cooling the transformer 13, the fan 14 operates to draw external air into the cabinet 1 and blow it on the surface of the transformer 13. After the air enters the cabinet 1 through the ventilation holes 12, the air enters the dehumidification chamber 24 and contacts each dehumidification box 3 in the dehumidification chamber 24. The desiccant in the dehumidification box 3 absorbs the moisture in the air, thereby drying and dehumidifying the air.

[0053] As each dehumidification box 3 is used for a long time, the water absorption of the desiccant in the dehumidification box 3 gradually reaches the maximum value, and thus the dehumidification box 3 needs to be replaced.

[0054] At this time, the feed motor 43 drives the upper main screw 41 and the upper auxiliary screw 42 to rotate; a dehumidification box 3 gradually moves into the regeneration channel 21, and the main protrusion 311 cooperates with the adjustment thread 411. Finally, the dehumidification box 3 moves to the upper end of the push plate 61 in the regeneration channel 21, and the dehumidification box 3 is in the regeneration state, and the distance between the first end cover 31 and the second end cover 32 is the largest. At the same time, the dehumidification box 3 at the upper end of the push plate 61 in the reset channel 23 moves into the dehumidification chamber 24, and finally enters the dehumidification chamber 24, thereby replenishing a dehumidification box 3 into the dehumidification chamber 24.

[0055] Then the electric push rod 7 operates to drive the lifting frame 6 to move to the lower limit position. Furthermore, the dehumidification box 3 in the regeneration channel 21 also moves to the lower limit position, and the dehumidification box 3 is aligned with the regeneration chamber 22. The main receiving groove 34 and the auxiliary receiving groove 35 on the dehumidification box 3 are respectively inserted on the lower main screw 51 and the lower auxiliary screw 52. At the same time, the anti-rotation plate 63 abuts against the anti-rotation groove 531, and the turntable 53 cannot rotate.

[0056] Then the ring gear motor 55 drives the drive ring gear 54 to rotate, and the drive ring gear 54 drives the lower main screw 51 and the lower auxiliary screw 52 to rotate synchronously. The dehumidification box 3 in the regeneration channel 21 gradually enters the regeneration chamber 22 and remains in the regeneration state. At the same time, a dehumidification box 3 in the regeneration chamber 22 moves into the reset channel 23, and the main protrusion 311 moves from the sliding thread 412 to the adjustment thread 411, and thus the first end cover 31 and the second end cover 32 approach each other. Finally, the dehumidification box 3 moves to the upper end of the push plate 61 in the reset channel 23, and at this time the dehumidification box 3 is in the dehumidification state.

[0057] After that, the electric push rod 7 drives the lifting frame 6 to move upward to the upper limit position, and the push plate 61 drives the dehumidification box 3 in the reset channel 23 to move to the upper limit position synchronously, and then returns to the initial state. The push plate 61 separates the regeneration chamber 22 from the dehumidification chamber 24.

[0058] Next, the hot air blower works, blowing hot air into the regeneration chamber 22. The hot air acts on the desiccant in the dehumidification box 3, causing the moisture in the desiccant to evaporate and carrying the moisture to the outside, thereby regenerating the desiccant. At the same time, the ring gear motor 55 drives the drive ring gear 54 to rotate. The drive ring gear 54 will drive the turntable 53 to rotate circumferentially synchronously, and then the lower main screw 51, the lower auxiliary screw 52 and each dehumidification box 3 located in the regeneration chamber 22 rotate synchronously. As the dehumidification box 3 rotates circumferentially, the desiccant tumbles in the dehumidification box 3, and the desiccant fully contacts the hot air, improving the regeneration efficiency of the desiccant. After a certain period of time, the hot air blower and the ring gear motor 55 stop working, and the regeneration of the desiccant is completed. At this time, the turntable 53 drives the lower main screw 51 and the lower auxiliary screw 52 to rotate to be directly opposite to the main receiving groove 34 and the auxiliary receiving groove 35 on the dehumidification box 3 in the dehumidification chamber 24, facilitating the next dehumidification box 3 to enter the regeneration chamber 22.

Claims

1. An AC voltage stabilizer with high-efficiency thyristor-driven transformer tap regulation, characterized in that: It includes a cabinet (1), a transformer (13), a fan (14) for heat dissipation, and a dehumidifier (15) for absorbing moisture in the air; the dehumidifier (15) includes a housing (2) and a plurality of dehumidification boxes (3) located inside the housing (2); the housing (2) includes a dehumidification chamber (24) and a regeneration chamber (22); the dehumidification box (3) includes a first end cover (31), a second end cover (32), and a corrugated pipe (33) connecting the first end cover (31) and the second end cover (32); a feeding mechanism (4) is respectively installed in the dehumidification chamber (24) and the regeneration chamber (22); the feeding mechanism (4) includes a main screw (401) and an auxiliary screw (402) that are arranged in parallel and rotate synchronously; an adjusting thread (411) and a sliding thread (412) that are in transmission connection with the first end cover (31) are arranged on the main screw (401); the adjusting thread (411) and the sliding thread (412) are connected; a synchronous thread (421) that is in transmission connection with the second end cover (302) is arranged on the auxiliary screw (402); the pitch of the adjusting thread (411) is greater than the pitch of the sliding thread (412); when the sliding thread (412) and the synchronous thread (421) are respectively matched with the dehumidification box (3), the first end cover (31) and the second end cover (32) move synchronously; when the adjusting thread (411) and the synchronous thread (421) are respectively matched with the dehumidification box (3), the first end cover (31) and the second end cover (32) slide relative to each other.

2. The high-efficiency thyristor-driven transformer tap-adjusting AC voltage stabilizer according to claim 1, characterized in that: The housing (2) further includes a regeneration channel (21) and a reset channel (23) located on both sides and connecting the regeneration chamber (21) and the dehumidification chamber (24); the main screw (401) located in the dehumidification chamber (24) is an upper main screw (41), and the auxiliary screw (402) is an upper auxiliary screw (42); the main screw (401) located in the regeneration chamber (22) is a lower main screw (51), and the auxiliary screw (402) is a lower auxiliary screw (52); the adjusting thread (411) on the upper main screw (41) is located in the regeneration channel (21), and the adjusting screw (411) on the lower main screw (51) is located in the reset channel (23).

3. The high-efficiency thyristor-driven transformer tap-adjusting AC voltage stabilizer according to claim 2, wherein: The upper main screw (41) is coaxially provided with an upper main gear (413); the upper auxiliary screw (42) is coaxially provided with an upper auxiliary gear (422); the upper main gear (413) meshes with the upper auxiliary gear (422); a feeding motor (43) for driving the upper main screw (41) to rotate is fixedly connected in the cabinet (1).

4. The high-efficiency thyristor-driven transformer tap-adjusting AC voltage stabilizer according to claim 2, characterized in that: The dehumidification box (3) is provided with two main accommodation grooves (34) which are symmetrically distributed about the center and communicate with the side wall of the dehumidification box (3); a secondary accommodation groove (35) is arranged in each main accommodation groove (34); the main accommodation groove (34) is used for accommodating the main screw rod (401); the secondary accommodation groove (35) is used for accommodating the secondary screw rod (402); a main protrusion (311) which is matched with the adjusting thread (4111) and the sliding thread (412) is arranged in the main accommodation groove (34) on the first end cover (31); a secondary protrusion (321) which is matched with the synchronous thread (421) is arranged in the secondary accommodation groove (35) on the second end cover (32).

5. The high-efficiency thyristor-driven transformer tap-adjusting AC voltage stabilizer according to claim 2, characterized in that: The dehumidifier (15) further includes a lifting frame (6); a push plate (61) which longitudinally slides in the regeneration channel (21) and the reset channel (23) is arranged on the lifting frame (6); the push plate (61) is used for pushing the dehumidification box (3) to move longitudinally in the regeneration channel (21) and the reset channel (23).

6. The high-efficiency thyristor-driven transformer tap-adjusting AC voltage stabilizer according to claim 5, wherein: An obstacle avoidance plate (62) is rotatably connected to the middle of the push plate (61); the rotating shaft of the obstacle avoidance plate (62) is parallel to the rotating shaft of the lower main screw rod (51); when the lifting frame (6) is located at the upper limit position, the push plate (61) is located in the middle of the regeneration channel (21) and the reset channel (23), the obstacle avoidance plate (62) is horizontally arranged, and the regeneration cavity (22) and the dehumidification cavity (24) are not communicated with each other.

7. The high-efficiency thyristor-driven transformer tap-adjusting AC voltage stabilizer according to claim 5, characterized in that: A turntable (53) is rotatably connected to the side wall of the outer shell (2); the lower main screw rod (51) and the lower secondary screw rod (52) are respectively rotatably connected to the eccentric positions of the turntable (53); a lower main gear (511) is coaxially arranged on the lower main screw rod (51); a lower secondary gear (521) which is meshed with the lower main gear (511) is coaxially arranged on the lower secondary screw rod (52); the turntable (53) is coaxially arranged with the dehumidification box (3) located in the regeneration cavity (22).

8. The high-efficiency thyristor-driven transformer tap-adjusting AC voltage stabilizer according to claim 7, characterized in that: A driving gear ring (54) which is coaxially arranged with the turntable (53) is rotatably connected to the outer shell (2); the driving gear ring (54) is meshed with the lower main gear (511); a rotation stopping groove (531) is arranged on the side wall of the turntable (53); a rotation stopping plate (63) which can abut against the rotation stopping groove (531) to prevent the turntable (53) from rotating is arranged on the lifting frame (6); a gear ring motor (55) which drives the driving gear ring (54) to rotate is fixedly connected to the side wall of the outer shell (2).

9. The high-performance thyristor-driven transformer tap-adjusting AC voltage stabilizer according to claim 1, characterized in that: The dehumidifier (15) further includes a hot air blower for supplying hot air into the regeneration cavity (22).

10. The high-performance thyristor-driven transformer tap-adjusting AC voltage stabilizer according to claim 1, characterized in that: A control panel (11) is arranged on the surface of the cabinet (1); a plurality of taps are arranged on the transformer (13); a thyristor unit for switching taps is arranged in the control panel (11).

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