Intelligent adjustable power transformer tapping device

Abstract

The invention discloses an intelligent adjustable power transformer tapping device which comprises a motor, a coupler is installed at the bottom of the motor, a connecting shaft is installed at the bottom of the coupler, an encoder is installed in the connecting shaft, a tapping switch is installed at the bottom of the connecting shaft, and a switch support is installed on the outer side of the top of the tapping switch. Through the built-in worm and gear reducer device of the motor, the self-locking function, the inertia of the newly-added coupler and the connecting shaft and the rotating torque of the tap switch, the tap switch can be self-locked and fixed at the required gear, and when the tap switch needs to be adjusted next time, the tap switch can be automatically locked and fixed at the required gear. The motor acts on the output torque to enable the tap switch to rotate to the corresponding gear position, the gear shifting action is completed, the work is repeated, gear shifting adjustment becomes more flexible and efficient, the voltage adjusting requirements under different working conditions can be met, and due to the intelligent gear shifting adjustment mode, the stability and reliability of an electric power system are improved, and the operation and maintenance cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, in particular to an intelligent adjustable power transformer tapping device. Background Art

[0002] The tap changer of the power transformer is used to adjust the output voltage of the transformer. Since the voltages in different places in the power system grid are not exactly the same, in order to ensure that the transformer can output the rated voltage no matter where it is installed in the grid, multiple taps are set on the high-voltage winding of the transformer, and the taps are connected to the tap changer, which is connected to the grid through the switch. The role of the tap changer in the transformer is to change the taps of the high-voltage winding and adjust the number of turns of the high-voltage winding, so that its transformation ratio can be changed, so that the output voltage on the low-voltage side can be effectively adjusted.

[0003] Currently, the tap changer is a manual mechanical adjustment switch, and transformers are often installed outdoors, at high places, and other places that ordinary people cannot easily touch. When there is a need for adjustment, the staff must go to the site to find the corresponding switch for manual adjustment. When the outdoor conditions are harsh, it will increase the difficulty of the staff's work, which is not only inefficient, but also has high labor costs and great safety hazards. Summary of the invention

[0004] The object of the present invention is to provide an intelligent adjustable power transformer tapping device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an intelligent adjustable power transformer tapping device, comprising a motor, a coupling is installed at the bottom of the motor, a connecting shaft is installed at the bottom of the coupling, an encoder is installed inside the connecting shaft, a tap switch is installed at the bottom of the connecting shaft, and a switch bracket is installed on the outside of the top of the tap switch.

[0006] Preferably, a driving shaft is fixedly installed on the output end of the motor, a coupling groove is opened inside the coupling, a driven shaft is fixedly installed on the top of the encoder, the end of the driving shaft away from the motor is installed on the top of the inner cavity of the coupling groove opened inside the coupling, and the end of the driven shaft away from the encoder is installed on the bottom of the inner cavity of the coupling groove opened inside the coupling.

[0007] Preferably, placement grooves are provided on both sides of the coupling, fastening threaded holes are provided inside the placement grooves, and fastening bolts are threadedly connected inside the fastening threaded holes.

[0008] Preferably, a mounting groove is provided inside the connecting shaft, the encoder is installed on the inner side of the mounting groove, a connecting ring 2 is fixedly installed on the top of the connecting shaft, four assembly threaded holes 2 are provided inside the connecting ring 2, a connecting ring 1 is fixedly installed on the bottom of the coupling, four assembly threaded holes 1 are provided inside the connecting ring 1, and the positions of the four connecting rings 1 correspond to the positions of the four assembly threaded holes 1 respectively, and the internal threads of the connecting ring 1 and the assembly threaded holes 1 are connected with assembly bolts.

[0009] Preferably, a connecting block is fixedly installed at the bottom of the connecting shaft, a connecting rotating rod is fixedly installed at the bottom of the connecting block, a connecting seat is fixedly installed at the top of the tap changer, a connecting groove is opened inside the connecting seat, an outer sleeve seat is sleeved on the outer side of the connecting seat, and the end of the connecting rotating rod away from the connecting shaft is installed inside the connecting groove opened in the connecting seat.

[0010] Preferably, there are two switch brackets, and the two switch brackets are symmetrically installed on the outside of the outer sleeve seat.

[0011] Preferably, a connecting threaded hole 1 is provided inside the connecting block, and three connecting threaded holes 2 are provided inside the switch bracket. The connecting threaded hole 1 corresponds to the position of one of the connecting threaded holes 2, and the connecting threaded hole 2 and the connecting threaded hole 1 are both threadedly connected with connecting bolts.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the motor has a built-in worm gear reducer device with a self-locking function, and the inertia of the newly added coupling and the connecting shaft, as well as the rotational torque of the tap changer itself, the tap changer can be self-locked and fixed in the required gear position. When the tap changer needs to be adjusted next time, the motor outputs torque to rotate the tap changer to the corresponding gear position to complete the gear shifting action. The work is repeated in this way, and the gear shifting adjustment becomes more flexible and efficient, which can meet the voltage regulation requirements under different working conditions. The intelligent gear shifting adjustment method not only improves the stability and reliability of the power system, but also reduces the operation and maintenance costs, and provides a strong guarantee for the safe and efficient operation of the power system.

[0013] In addition, without destroying the original switch device, additional devices can be installed to realize remote intelligent control switch adjustment, thereby solving the problems of difficult and long outdoor work cycles and potential safety hazards under the current harsh climate, greatly reducing manual work and maintenance costs, and can replace the original manual operation, reducing labor costs and operational risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the present invention.

[0015] Figure 2It is a schematic diagram of the three-dimensional structure of the motor of the present invention.

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the coupling of the present invention.

[0017] Figure 4 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0018] Figure 5 It is a schematic diagram of the three-dimensional structure of the switch bracket of the present invention.

[0019] Figure 6 It is a schematic diagram of the three-dimensional structure of the tap changer of the present invention.

[0020] In the figure: 1. Motor; 2. Coupling; 3. Connecting shaft; 4. Encoder; 5. Switch bracket; 6. Tap changer; 7. Connecting bolt; 8. Fastening bolt; 9. Driving shaft; 10. Connecting ring 1; 11. Assembly threaded hole 1; 12. Coupling groove; 13. Placement groove; 14. Fastening threaded hole; 15. Connecting ring 2; 16. Assembly threaded hole 2; 17. Driven shaft; 18. Mounting groove; 19. Connecting block; 20. Connecting threaded hole 1; 21. Connecting rotating rod; 22. Connecting seat; 23. Connecting groove; 24. Outer sleeve seat; 25. Connecting threaded hole 2. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 6The present invention provides a technical solution: an intelligent adjustable power transformer tapping device, comprising a motor 1, a coupling 2 is installed at the bottom of the motor 1, placement grooves 13 are provided on both sides of the coupling 2, fastening threaded holes 14 are provided inside the placement grooves 13, fastening bolts 8 are threadedly connected inside the fastening threaded holes 14, a connecting shaft 3 is installed at the bottom of the coupling 2, an encoder 4 is installed inside the connecting shaft 3, a driving shaft 9 is fixedly installed at the output end of the motor 1, a coupling groove 12 is provided inside the coupling 2, a driven shaft 17 is fixedly installed on the top of the encoder 4, the end of the driving shaft 9 away from the motor 1 is installed at the top of the inner cavity of the coupling groove 12 provided inside the coupling 2, the end of the driven shaft 17 away from the encoder 4 is installed at the bottom of the inner cavity of the coupling groove 12 provided inside the coupling 2, a mounting groove 18 is provided inside the connecting shaft 3, the encoder 4 is installed on the inner side of the mounting groove 18, the top of the connecting shaft 3 A connecting ring 15 is fixedly installed, and four assembly threaded holes 16 are opened inside the connecting ring 15. A connecting ring 10 is fixedly installed at the bottom of the coupling 2, and four assembly threaded holes 11 are opened inside the connecting ring 10, and the positions of the four connecting rings 10 correspond to the positions of the four assembly threaded holes 11 respectively. The internal threads of the connecting ring 10 and the assembly threaded holes 11 are connected with assembly bolts. A tap changer 6 is installed at the bottom of the connecting shaft 3. A connecting block 19 is fixedly installed at the bottom of the connecting shaft 3, and a connecting rotating rod 21 is fixedly installed at the bottom of the connecting block 19. A connecting seat 22 is fixedly installed on the top of the tap changer 6. A connecting groove 23 is opened inside the connecting seat 22, and an outer sleeve seat 24 is sleeved on the outer side of the connecting seat 22. The end of the connecting rotating rod 21 away from the connecting shaft 3 is installed inside the connecting groove 23 opened in the connecting seat 22, and a switch bracket 5 is installed on the outer side of the top of the tap changer 6.

[0023] The working principle of the above technical solution is as follows: after the device is installed, the motor 1 learns and identifies the position of each gear of the switch through the encoder 4. When the single-chip control module detects that the output voltage of the transformer is unstable, it will control the motor 1 to rotate to the corresponding position by controlling the MOS tube switch of the drive module. When the output shaft of the motor 1 drives the active shaft 9 to rotate, the torque will be transmitted to the driven shaft 17 through the coupling 2 to rotate, thereby driving the encoder 4 to rotate, and the rotation of the coupling 2 can drive the connecting shaft 3 to rotate through the connecting ring 1 10 and the connecting ring 2 15. At the same time, the connecting rod 21 at the bottom of the connecting shaft 3 will drive the tap switch 6 to rotate synchronously through the connecting groove 23 and the connecting seat 22. When the encoder 4 detects that it has rotated to the target angle, the motor 1 stops rotating and the shifting action of the tap switch 6 is completed. Since the motor 1 has a built-in worm gear reducer device with a self-locking function, plus the newly added coupling The inertia of the shaft 2 and the connecting shaft 3, as well as the rotational torque of the tap changer 6 itself, the tap changer 6 can be self-locking and fixed in the required gear position. When the tap changer 6 is required to be adjusted next time, the motor 1 acts to output torque to rotate the tap changer 6 to the corresponding gear position to complete the gear shifting action. The work is repeated in this way, and the gear shifting adjustment becomes more flexible and efficient, which can meet the voltage regulation requirements under different working conditions. The intelligent gear shifting adjustment method not only improves the stability and reliability of the power system, but also reduces the operation and maintenance costs, and provides a strong guarantee for the safe and efficient operation of the power system. The device can be installed on the basis of not destroying the original switch device to realize remote intelligent control switch adjustment, thereby solving the problems of difficulty, long cycle and safety hazards of outdoor work in the current severe climate, greatly reducing manual operation and maintenance costs, and can replace the original manual operation to reduce labor costs and operation risks.

[0024] In another embodiment, Figure 1-Figure 6 As shown, there are two switch brackets 5, and the two switch brackets 5 are symmetrically installed on the outside of the outer sleeve seat 24. A connecting threaded hole 1 20 is opened inside the connecting block 19, and three connecting threaded holes 25 are opened inside the switch brackets 5. The connecting threaded hole 1 20 corresponds to the position of one of the connecting threaded holes 25, and the connecting bolts 7 are threadedly connected to the inside of the connecting threaded hole 25 and the connecting threaded hole 1 20.

[0025] The two switch brackets 5 can make the connection between the tap switch 6 and the connecting shaft 3 more stable, and reinforce the connection position between the tap switch 6 and the connecting shaft 3 to ensure the normal operation of the device.

[0026] Working principle: After the device is installed, the motor 1 learns and identifies the position of each gear of the switch through the encoder 4. When the single-chip control module detects that the output voltage of the transformer is unstable, it will control the motor 1 to rotate to the corresponding position by controlling the MOS tube switch of the drive module. When the output shaft of the motor 1 drives the active shaft 9 to rotate, the torque will be transmitted to the driven shaft 17 through the coupling 2 to rotate, thereby driving the encoder 4 to rotate, and the rotation of the coupling 2 can drive the connecting shaft 3 to rotate through the connecting ring 1 10 and the connecting ring 2 15. At the same time, the connecting rod 21 at the bottom of the connecting shaft 3 will drive the tap switch 6 to rotate synchronously through the connecting groove 23 and the connecting seat 22. When the encoder 4 detects that it has rotated to the target angle, the motor 1 stops rotating and the shifting action of the tap switch 6 is completed. Since the motor 1 has a built-in worm gear reducer device with a self-locking function, plus the inertia of the newly added coupling 2 and the connecting shaft 3, as well as the rotational torque of the tap switch 6 itself, the tap switch 6 can be self-locking and fixed. The required gear position, when the tap switch 6 needs to be adjusted next time, the motor 1 acts to output torque to rotate the tap switch 6 to the corresponding gear position to complete the gear shifting action, and repeats the work. Through the precise control of the motor 1, the gear shifting adjustment becomes more flexible and efficient, and can meet the voltage regulation requirements under different working conditions. The intelligent gear shifting adjustment method not only improves the stability and reliability of the power system, but also reduces the operation and maintenance cost, and provides a strong guarantee for the safe and efficient operation of the power system. The device can be installed on the basis of not destroying the original switch device to realize remote intelligent control switch adjustment, thereby solving the problems of difficult outdoor work, long cycle and potential safety hazards in the current severe climate, greatly reducing manual operation and maintenance costs, and can replace the original manual operation, reducing labor costs and operation risks. The two switch brackets 5 set up can make the connection between the tap switch 6 and the connecting shaft 3 more stable, and the connection position of the tap switch 6 and the connecting shaft 3 is reinforced to ensure the normal operation of the device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent adjustable power transformer tapping device, comprising a motor (1), characterized in that: A coupling (2) is installed at the bottom of the motor (1), a connecting shaft (3) is installed at the bottom of the coupling (2), an encoder (4) is installed inside the connecting shaft (3), a tap changer (6) is installed at the bottom of the connecting shaft (3), and a switch bracket (5) is installed on the outside of the top of the tap changer (6).

2. The intelligent adjustable power transformer tapping device according to claim 1 is characterized in that: A driving shaft (9) is fixedly mounted on the output end of the motor (1), a coupling groove (12) is provided inside the coupling (2), a driven shaft (17) is fixedly mounted on the top of the encoder (4), an end of the driving shaft (9) away from the motor (1) is mounted on the top of the inner cavity of the coupling groove (12) provided inside the coupling (2), and an end of the driven shaft (17) away from the encoder (4) is mounted on the bottom of the inner cavity of the coupling groove (12) provided inside the coupling (2).

3. The intelligent adjustable power transformer tapping device according to claim 2 is characterized in that: Both sides of the coupling (2) are provided with placement grooves (13), the interior of the placement grooves (13) is provided with fastening threaded holes (14), and the interior of the fastening threaded holes (14) is threadedly connected with fastening bolts (8).

4. The intelligent adjustable power transformer tapping device according to claim 3 is characterized in that: The connecting shaft (3) is provided with a mounting groove (18), the encoder (4) is installed on the inner side of the mounting groove (18), a connecting ring 2 (15) is fixedly installed on the top of the connecting shaft (3), four assembly threaded holes 2 (16) are provided inside the connecting ring 2 (15), a connecting ring 1 (10) is fixedly installed on the bottom of the coupling (2), four assembly threaded holes 1 (11) are provided inside the connecting ring 1 (10), and the positions of the four connecting rings 1 (10) correspond to the positions of the four assembly threaded holes 1 (11), and the internal threads of the connecting ring 1 (10) and the assembly threaded holes 1 (11) are connected by assembly bolts.

5. The intelligent adjustable power transformer tapping device according to claim 4 is characterized in that: A connecting block (19) is fixedly mounted on the bottom of the connecting shaft (3), a connecting rotating rod (21) is fixedly mounted on the bottom of the connecting block (19), a connecting seat (22) is fixedly mounted on the top of the tap changer (6), a connecting groove (23) is provided inside the connecting seat (22), an outer sleeve seat (24) is sleeved on the outer side of the connecting seat (22), and an end of the connecting rotating rod (21) away from the connecting shaft (3) is mounted inside the connecting groove (23) provided on the connecting seat (22).

6. The intelligent adjustable power transformer tapping device according to claim 5, characterized in that: There are two switch brackets (5), and the two switch brackets (5) are symmetrically installed on the outside of the outer sleeve seat (24).

7. The intelligent adjustable power transformer tapping device according to claim 6 is characterized in that: The connection block (19) is provided with a connection threaded hole 1 (20) inside, and the switch bracket (5) is provided with three connection threaded holes 2 (25) inside, wherein the connection threaded hole 1 (20) corresponds to the position of one of the connection threaded holes 2 (25), and the connection threaded hole 2 (25) and the connection threaded hole 1 (20) are both threadedly connected with connection bolts (7).

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