High-voltage isolation transformer

Abstract

This invention discloses a high-voltage isolation transformer, including a protective cover and the high-voltage isolation transformer itself. A serpentine opening is provided at the center of the top of the protective cover, and an L-shaped baffle is fixedly connected to the front side of the protective cover near the top. Through the cooperation of components such as a motor, driving crank, driven crank, fixed plate, moving plate, fitting rod, limiting plate, flipping plate, C-shaped fixing piece, side plate, first crank, connecting plate, second crank, mounting plate, and cylinder, this invention enables the motor to move a dryer when the high-voltage isolation transformer has not been started for a long time. When the dryer moves, it preheats the inner cavity of the protective cover, reducing the rate of change of magnetic flux during transformer startup, thereby reducing the magnitude of the inrush current and protecting the transformer from damage. Simultaneously, it removes moisture and volatiles from inside the transformer, reducing the impact of these substances on the insulation and heat dissipation performance during transformer operation.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, specifically to high-voltage isolation transformers. Background Technology

[0002] In rail transit, high-voltage isolation transformers play a crucial role. Rail transit systems typically draw power from the high-voltage power grid to meet the power demands of train operation, station facilities, signaling systems, and more. High-voltage isolation transformers convert high-voltage power signals into low-voltage signals suitable for use by the internal equipment of the rail transit system. They also provide stable power supply voltage and lightning protection, which are of great significance for ensuring the normal operation of the rail transit system and train safety.

[0003] However, when a high-voltage isolation transformer is in use, it may generate a large inrush current, which can cause a certain impact on the power grid and equipment. This inrush current is called inrush current, which is a phenomenon unique to transformers. For transformers that have not been used for a long time, preheating treatment should be performed before starting to stabilize their internal state and reduce the inrush current during startup. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a high-voltage isolation transformer, comprising a protective cover and a high-voltage isolation transformer. A serpentine opening is provided at the center of the top of the protective cover. An L-shaped baffle is fixedly connected to the front side of the protective cover near the top. The high-voltage isolation transformer is located within the inner cavity of the protective cover. The bottom of the high-voltage isolation transformer is fixedly connected to the bottom of the inner cavity of the protective cover. Side plates are fixedly connected to both sides of the L-shaped baffle. Rectangular openings are formed at the beginning of the inner cavity of each side plate. The rear sides of both side plates are fixedly connected to the front side of the protective cover. Two flip plates are located between the two side plates and are symmetrically arranged. Observation windows are provided on the flip plates. Sliding plates are hinged to opposite sides of the two flip plates. Both sliding plates are slidably connected to adjacent rectangular openings. Two mounting plates are fixedly connected to the inner wall of the protective cover and are symmetrically arranged. Lifting plates are slidably connected to the inner cavity of each mounting plate. Second cranks are hinged to corresponding sides of the two lifting plates. C-shaped fasteners are fixedly connected to the rear side of each plate. A connecting plate is fixedly connected to the rear side of each C-shaped fastener. The two connecting plates are arranged symmetrically, one above the other. The other side of the second crank is hinged to the lower connecting plate. The upper connecting plate is hinged to the first crank. The other side of the first crank is hinged to the side plate. A cylinder is fixedly connected to the bottom of the mounting plate. The power output shaft of the cylinder is fixedly connected to the bottom of the lifting plate. A motor is located near the top on the right side of the protective cover. A fixing plate is fixedly connected to the left side of the motor. The left side of the fixing plate is fixedly connected to the protective cover. A driving crank is fixedly connected to the power output shaft of the motor. A driven crank is hinged to the driving crank. A moving plate is located at the top of the serpentine opening. The other side of the driven crank is hinged to the moving plate. A dryer is fixedly connected to the center of the bottom of the moving plate. Two bonding rods are fixedly connected to the bottom of the moving plate. The two bonding rods are arranged symmetrically, and the outer sides of the two bonding rods are in contact with the inner wall of the serpentine opening. A limit plate is fixedly connected to the bottom end of the bonding rod.

[0005] Preferably, a rectangular frame is fixedly connected to the left side of the protective cover, and two snap-fit ​​plates are fixedly connected to the top of the rectangular frame. The two snap-fit ​​plates are arranged symmetrically front and back, and a roller is hinged between the two snap-fit ​​plates. A pull rope is wound around the outside of the roller, and the other end of the pull rope passes through the inner cavity of the rectangular frame.

[0006] Preferably, the inner sidewall of the rectangular frame has two grooves, which are symmetrically arranged front and back. There is ABS plastic between the two grooves, and the ABS plastic is slidably connected to the two grooves. The other end of the pull rope is fixedly connected to a counterweight, which is in contact with the top of the ABS plastic.

[0007] Preferably, a concave plate is fixedly connected to the front side of the rectangular frame, a center plate is fixedly connected to the right side of the concave plate, the right side of the center plate extends into the inner cavity of the rectangular frame, and a trigger switch is installed on the top of the center plate near the right side.

[0008] Preferably, two welding plates are fixedly connected to the left side of the rectangular frame, and a swing plate is hinged between the two welding plates. A spring is fixedly connected to the top of the concave plate, and the top of the spring is fixedly connected to the bottom of the swing plate. The right side of the swing plate extends into the inner cavity of the rectangular frame.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1. This invention, through the cooperation of components such as a motor, driving crank, driven crank, fixed plate, moving plate, fitting rod, limiting plate, flipping plate, C-shaped fixing piece, side plate, first crank, connecting plate, second crank, mounting plate, and cylinder, enables the motor to move the dryer when the high-voltage isolation transformer has not been started for a long time. When the dryer moves, it can preheat the inner cavity of the protective cover to reduce the magnetic flux change rate of the transformer during startup, thereby reducing the magnitude of the inrush current and protecting the transformer from damage. At the same time, it can remove moisture and volatiles from inside the transformer, reducing the impact of these substances on the insulation and heat dissipation performance of the transformer during operation.

[0011] 2. This invention, through the cooperation of components such as snap-fit ​​plate, roller, pull rope, counterweight, ABS plastic, rectangular frame, center plate, trigger switch, concave plate, spring, swing plate, and welding plate, can achieve the function of shutting off the dryer when the ABS plastic softens due to its melting point of around 200 degrees Celsius, thus avoiding overheating and equipment damage. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention;

[0013] Figure 2 This is a right view of the structure of the present invention;

[0014] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0015] Figure 4 This is a schematic diagram of the flip plate structure of the component of the present invention;

[0016] Figure 5 This is a rear view of the flip-up plate structure of the component of the present invention;

[0017] Figure 6 This is a schematic diagram of the component fixing plate structure of the present invention;

[0018] Figure 7This is a schematic diagram of the internal structure of the rectangular frame of the component of the present invention.

[0019] The following are the labels in the diagram: 1. Protective cover; 2. Moving plate; 3. Driving crank; 4. Driven crank; 5. Motor; 6. Fixed plate; 7. L-shaped baffle; 8. Flipping plate; 9. Side plate; 10. Sliding plate; 11. Adhesive rod; 12. Limiting plate; 13. Dryer; 14. First crank; 15. Connecting plate; 16. Mounting plate; 17. Cylinder; 18. C-shaped fastener; 19. High-voltage isolation transformer; 20. Second crank; 21. Rectangular frame; 22. ABS plastic; 23. Counterweight; 24. Pull rope; 25. Roller; 26. Snap-fit ​​plate; 27. Trigger switch; 28. Center plate; 29. ​​Concave plate; 30. Spring; 31. Welding plate; 32. Swing plate. Detailed Implementation

[0020] Please see Figure 1-7 The present invention provides a technical solution:

[0021] A high-voltage isolation transformer includes a protective cover 1 and a high-voltage isolation transformer 19. A serpentine opening is located at the center of the top of the protective cover 1. An L-shaped baffle 7 is fixedly connected to the front side of the protective cover 1 near the top. The high-voltage isolation transformer 19 is located within the inner cavity of the protective cover 1, and its bottom is fixedly connected to the bottom of the inner cavity of the protective cover 1. Side plates 9 are fixedly connected to both sides of the L-shaped baffle 7. The inner cavity of each side plate 9 has a rectangular opening. The rear sides of both side plates 9 are fixedly connected to the front side of the protective cover 1. Two flip plates 8 are located between the two side plates 9, and these two flip plates 8 are symmetrically arranged. Observation windows are provided on the flip plates 8. Sliding plates 10 are hinged to the opposite sides of each of the two flip plates 8. Both sliding plates 10 are connected to adjacent... The rectangular opening is slidably connected. Two mounting plates 16 are fixedly connected to the inner wall of the protective cover 1, and the two mounting plates 16 are symmetrically arranged on the left and right. A lifting plate is slidably connected to the inner cavity of the mounting plate 16. A second crank 20 is hinged to one side of each of the two lifting plates. C-shaped fasteners 18 are fixedly connected to the rear side of the flip plate 8. A connecting plate 15 is fixedly connected to the rear side of the C-shaped fasteners 18. The two connecting plates 15 are symmetrically arranged vertically. The other side of the second crank 20 is hinged to the connecting plate 15 located below. The connecting plate 15 located above is hinged to the first crank 14. The other side of the first crank 14 is hinged to the side plate 9. A cylinder 17 is fixedly connected to the bottom of the mounting plate 16. The power output shaft of the cylinder 17 is fixedly connected to the bottom of the lifting plate.

[0022] Near the top of the right side of the protective cover 1, there is a motor 5. A fixing plate 6 is fixedly connected to the left side of the motor 5. The left side of the fixing plate 6 is fixedly connected to the protective cover 1. The power output shaft of the motor 5 is fixedly connected to the driving crank 3. A driven crank 4 is hinged to the driving crank 3. There is a moving plate 2 at the top of the serpentine opening. The other side of the driven crank 4 is hinged to the moving plate 2. A dryer 13 is fixedly connected to the bottom center of the moving plate 2. Two bonding rods 11 are fixedly connected to the bottom of the moving plate 2. The two bonding rods 11 are symmetrically arranged on the left and right. The outer sides of the two bonding rods 11 are both in contact with the inner sidewall of the serpentine opening. A limit plate 12 is fixedly connected to the bottom end of the bonding rods 11.

[0023] A rectangular frame 21 is fixedly connected to the left side of the protective cover 1. Two snap-fit ​​plates 26 are fixedly connected to the top of the rectangular frame 21, and the two snap-fit ​​plates 26 are symmetrically arranged front and back. A roller 25 is hinged between the two snap-fit ​​plates 26. A pull rope 24 is wound around the outside of the roller 25. The other end of the pull rope 24 passes through the inner cavity of the rectangular frame 21. Two wire grooves are opened on the inner side wall of the rectangular frame 21, and the two wire grooves are symmetrically arranged front and back. An ABS plastic 22 is between the two wire grooves and is slidably connected to the two wire grooves. A counterweight 23 is fixedly connected to the other end of the pull rope 24. 3 is attached to the top of ABS plastic 22. A concave plate 29 is fixedly connected to the front side of the rectangular frame 21. A middle plate 28 is fixedly connected to the right side of the concave plate 29. The right side of the middle plate 28 extends into the inner cavity of the rectangular frame 21. A trigger switch 27 is installed on the top of the middle plate 28 near the right side. Two welding plates 31 are fixedly connected to the left side of the rectangular frame 21. A swing plate 32 is hinged between the two welding plates 31. A spring 30 is fixedly connected to the top of the concave plate 29. The top of the spring 30 is fixedly connected to the bottom of the swing plate 32. The right side of the swing plate 32 extends into the inner cavity of the rectangular frame 21.

[0024] Working principle: When preheating of the high-voltage isolation transformer 19 needs to begin, cylinder 17 can be started. Cylinder 17 drives the lifting plate upward via the power output shaft. When the lifting plate moves upward, the second crank 20 drives the connecting plate 15 located below to move upward. When the connecting plate 15 moves upward, the tilting plate 8 can be tilted. The movement trajectory of the tilting plate 8 can be limited by the first crank 14 and the sliding plate 10. When cylinder 17 drives the lifting plate downward via the power output shaft, the above movement process is reversed. At this time, the two tilting plates 8 are in a closed state. When motor 5 starts, the power output shaft drives the driving crank 3 to rotate. When the driving crank 3 starts, it drives the driven crank... The handle 4 rotates, and when the driven crank 4 rotates, it can pull the moving plate 2 to move back and forth. When the moving plate 2 moves back and forth, it fits with the serpentine opening, which can make the dryer 13 move in a serpentine manner, improving the preheating efficiency. When the internal temperature of the protective cover 1 reaches about 200 degrees Celsius, the ABS plastic 22 melts and falls downward. When the ABS plastic 22 falls downward, the counterweight 23 falls downward and contacts the top of the swing plate 32 near the right side, thereby causing the swing plate 32 to flip. When the swing plate 32 flips, the trigger switch 27 can be activated to turn off the dryer 13 and the motor 5. Under the force of the spring 30, the swing plate 32 returns to its original flip and discharges the ABS plastic 22 on the surface.

Claims

1. A high-voltage isolation transformer, comprising a protective cover (1) and a high-voltage isolation transformer (19), characterized in that: The protective cover (1) has a serpentine opening at the top center. An L-shaped baffle (7) is fixedly connected to the front side of the protective cover (1) near the top. The high-voltage isolation transformer (19) is located in the inner cavity of the protective cover (1). The bottom of the high-voltage isolation transformer (19) is fixedly connected to the bottom of the inner cavity of the protective cover (1). Side plates (9) are fixedly connected to both sides of the L-shaped baffle (7). The inner cavity of the side plate (9) has a rectangular opening. The rear sides of the two side plates (9) are fixedly connected to the front side of the protective cover (1). There are two flip plates (8) between the two side plates (9), and the two flip plates (8) are symmetrical. The rotating plate (8) is provided with an observation window. Sliding plates (10) are hinged to opposite sides of both rotating plates (8). Both sliding plates (10) are slidably connected to adjacent rectangular openings. Two mounting plates (16) are fixedly connected to the inner wall of the protective cover (1), and the two mounting plates (16) are symmetrically arranged. Lifting plates are slidably connected to the inner cavity of each mounting plate (16). Second cranks (20) are hinged to corresponding sides of both lifting plates. C-shaped fasteners (18) are fixedly connected to the rear side of each rotating plate (8). A connecting rod is fixedly connected to the rear side of each C-shaped fastener (18). The two connecting plates (15) are arranged symmetrically, one above the other. The other side of the second crank (20) is hinged to the connecting plate (15) located below. The connecting plate (15) located above is hinged to the first crank (14). The other side of the first crank (14) is hinged to the side plate (9). The bottom of the mounting plate (16) is fixedly connected to the cylinder (17). The power output shaft of the cylinder (17) is fixedly connected to the bottom of the lifting plate. The right side of the protective cover (1) is near the top of the motor. The left side of the motor (5) is fixedly connected to the fixing plate (6). The left side of the fixing plate (6) is fixedly connected to the protective cover. On the protective cover (1), the power output shaft of the motor (5) is fixedly connected to the active crank (3), the active crank (3) is hinged to the driven crank (4), the top of the serpentine opening has a moving plate (2), the other side of the driven crank (4) is hinged to the moving plate (2), the bottom center of the moving plate (2) is fixedly connected to the dryer (13), the bottom of the moving plate (2) is fixedly connected to two bonding rods (11), and the two bonding rods (11) are symmetrically arranged on the left and right. The outer sides of the two bonding rods (11) are both in contact with the inner sidewall of the serpentine opening, and the bottom end of the bonding rods (11) is fixedly connected to the limit plate (12).

2. The high-voltage isolation transformer according to claim 1, characterized in that: A rectangular frame (21) is fixedly connected to the left side of the protective cover (1). Two snap-fit ​​plates (26) are fixedly connected to the top of the rectangular frame (21), and the two snap-fit ​​plates (26) are symmetrically arranged front and back. A roller (25) is hinged between the two snap-fit ​​plates (26). A pull rope (24) is wrapped around the outside of the roller (25), and the other end of the pull rope (24) passes through the inner cavity of the rectangular frame (21).

3. The high-voltage isolation transformer according to claim 2, characterized in that: The inner sidewall of the rectangular frame (21) has two grooves, which are symmetrically arranged front and back. There is an ABS plastic (22) between the two grooves. The ABS plastic (22) is slidably connected to the two grooves. The other end of the pull rope (24) is fixedly connected to a counterweight (23), which is attached to the top of the ABS plastic (22).

4. The high-voltage isolation transformer according to claim 3, characterized in that: A concave plate (29) is fixedly connected to the front side of the rectangular frame (21), and a center plate (28) is fixedly connected to the right side of the concave plate (29). The right side of the center plate (28) extends into the inner cavity of the rectangular frame (21), and a trigger switch (27) is installed on the top of the center plate (28) near the right side.

5. The high-voltage isolation transformer according to claim 4, characterized in that: Two welding plates (31) are fixedly connected to the left side of the rectangular frame (21), and a swing plate (32) is hinged between the two welding plates (31). A spring (30) is fixedly connected to the top of the concave plate (29), and the top of the spring (30) is fixedly connected to the bottom of the swing plate (32). The right side of the swing plate (32) extends into the inner cavity of the rectangular frame (21).

Images