A boost transformer overload protection device

Abstract

The utility model relates to power protection technical field, specifically is a kind of booster transformer overload protection device, including Z-shaped fixed plate, box, sealing cover and electronic overload relay, the both ends of one side of box are equally provided with L-shaped guide strip by screw and sealing cover is inserted between L-shaped guide strip, the both sides of the bottom of box are equally provided with strip sliding hole and sliding screw rod is slid in strip sliding hole, sliding screw rod is equipped with sliding plate between by screw hole, the top of sliding plate is equipped with electronic overload relay by bolt;The bottom one end of box is equipped with hanging plate by screw, the side of hanging plate is equipped with fixed wire screw rod by screw hole equidistance, booster transformer overload protection device is convenient to the winding and fixed of redundant incoming and outgoing line body, avoid scattering, and the protection of electronic overload relay is carried out, and dustproof effect is high.

Description

Technical Field

[0001] This utility model relates to the field of power protection technology, specifically to an overload protection device for a step-up transformer. Background Technology

[0002] A step-up transformer is a transformer used to transform a low-value alternating voltage into a higher-value alternating voltage of the same frequency. It is widely used in applications requiring voltage increases, such as long-distance power transmission in power systems. The working principle of a step-up transformer is based on the law of electromagnetic induction. When alternating current flows through the main winding (also called the primary winding), it generates a magnetic field in the iron core. This magnetic field passes through the secondary winding, inducing an electromotive force (EMF) within it. Because the secondary winding has more turns than the primary winding, the output voltage is greater than the input voltage, thus achieving the step-up function. To prevent overload, electronic overload relays and other protective devices are installed to protect the step-up transformer from overload.

[0003] Existing overload protection devices for step-up transformers are not convenient for winding and fixing excess incoming and outgoing lines to avoid scattering, and they cannot protect electronic overload relays, resulting in poor dust protection. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides an overload protection device for step-up transformers. The overload protection device facilitates the winding and fixing of excess input and output lines to prevent them from becoming scattered, and also protects the electronic overload relay with high dustproof performance.

[0005] The technical solution adopted by this utility model to solve its technical problem is a step-up transformer overload protection device, including a Z-shaped fixing plate, a box, a sealing cover and an electronic overload relay. L-shaped guide strips are installed on both ends of one side of the box by screws, and a sealing cover is inserted between the L-shaped guide strips. Slotted sliding holes are opened on both sides of the bottom end of the box, and sliding screws slide in the slotted sliding holes. A sliding plate is installed between the sliding screws through screw holes. An electronic overload relay is installed on the top of the sliding plate by bolts.

[0006] A hanging plate is installed at one bottom end of the box body by screws. A wire fixing screw is installed at equal intervals on one side of the hanging plate through screw holes. A wire fixing washer and a wire fixing nut are respectively sleeved on one end of the wire fixing screw, and the wire fixing nut is located outside the wire fixing washer.

[0007] By adopting the above technical solution, the overload protection device for step-up transformers can easily wrap and fix excess incoming and outgoing lines to avoid them becoming scattered, and can also protect electronic overload relays with high dustproof effect.

[0008] Specifically, Z-shaped fixing plates are welded to both sides of the box and close to the back of the box, and mounting holes are provided on the Z-shaped fixing plates.

[0009] By adopting the above technical solution, the mounting holes on the Z-shaped fixing plate and the matching bolts make it easy to fix the box to the side of the step-up transformer.

[0010] Specifically, a locking nut is fitted on the other end of the sliding screw, and the locking nut is located outside the strip-shaped sliding hole.

[0011] By adopting the above technical solution, loosening the locking nut allows the sliding screw to slide within the strip-shaped sliding hole, thereby sliding the sliding plate out of the box.

[0012] Specifically, the bottom of the box body is provided with wire holes at equal intervals close to the L-shaped guide strip, and a sealing wire sleeve is fitted inside the wire holes.

[0013] Specifically, an integrally formed lever is provided at the top of one side of the sealing cover.

[0014] Specifically, the electronic overload relay has metal terminals evenly spaced on one side of its bottom end.

[0015] The beneficial effects of this utility model are:

[0016] (1) The step-up transformer overload protection device described in this utility model uses the mounting holes on the Z-shaped fixing plate and the matching bolts to make it easy to fix the box to one side of the step-up transformer. Loosen the locking nut to make the sliding screw slide in the strip-shaped sliding hole, thereby sliding the sliding plate out of the box, making it easy to install the electronic overload relay on the top of the sliding plate. Then, move the electronic overload relay into the box, connect the power transmission line of the step-up transformer to the metal terminal, and let the inlet and outlet lines pass through the sealed wire sleeve.

[0017] (2) The overload protection device for step-up transformer described in this utility model involves winding excessive wires onto the wire fixing screw and placing them inside the wire pressing pad. Tightening the wire pressing nut makes the wire pressing pad press tightly against the wound wires, thereby fixing the wound wires. The sealing cover is inserted between the L-shaped guide strips to seal the box, which greatly improves the dustproof effect and prevents damage caused by accidental impact. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a bottom view of the present invention;

[0021] Figure 3 This utility model Figure 2 A schematic diagram of the structure at point A.

[0022] In the diagram: 1. Mounting hole; 2. Z-shaped fixing plate; 3. Box body; 4. Paddle plate; 5. Sealing cover; 6. L-shaped guide strip; 7. Electronic overload relay; 8. Metal terminal block; 9. Wire fixing screw; 10. Hanging plate; 11. Strip-shaped sliding hole; 12. Locking nut; 13. Sliding screw; 14. Sealing sleeve; 15. Wire pressing nut; 16. Wire pressing washer; 18. Sliding plate. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] To facilitate the winding and securing of excess incoming and outgoing lines in the overload protection device for the step-up transformer, preventing tangling, and to protect the electronic overload relay 7 with high dustproof performance, such as... Figure 1-3 As shown, the present invention discloses an overload protection device for a step-up transformer, comprising a Z-shaped fixing plate 2, a housing 3, a sealing cover 5, and an electronic overload relay 7. L-shaped guide strips 6 are screwed onto both ends of one side of the housing 3, and a sealing cover 5 is inserted between the L-shaped guide strips 6. Strip-shaped sliding holes 11 are opened on both sides of the bottom end of the housing 3, and sliding screws 13 slide within the strip-shaped sliding holes 11. A sliding plate 18 is installed between the sliding screws 13 through screw holes. The electronic overload relay 7 is bolted to the top of the sliding plate 18.

[0025] A hanging plate 10 is installed at one bottom end of the box body 3 by screws. A wire fixing screw 9 is installed at equal intervals on one side of the hanging plate 10 through screw holes. A wire fixing screw 9 is respectively fitted with a wire pressing washer 16 and a wire pressing nut 15, with the wire pressing nut 15 located outside the wire pressing washer 16.

[0026] When in use, the overload protection device of the step-up transformer makes it easy to wind and fix excess incoming and outgoing wires to prevent them from becoming tangled, and it also protects the electronic overload relay 7 with high dustproof effect.

[0027] For example, such as Figure 1 As shown, the present invention also includes Z-shaped fixing plates 2 welded to both sides of the box body 3 and close to the back of the box body 3, and mounting holes 1 are provided on the Z-shaped fixing plates 2.

[0028] When in use, the mounting holes 1 on the Z-shaped fixing plate 2 and the matching bolts are used to easily fix the box 3 to one side of the step-up transformer.

[0029] For example, such as Figure 1As shown, the present invention also includes a locking nut 12 sleeved on the other end of the sliding screw 13, and the locking nut 12 is located outside the strip-shaped sliding hole 11.

[0030] In use, loosening the locking nut 12 allows the sliding screw 13 to slide within the strip-shaped sliding hole 11, thereby sliding the sliding plate 18 out of the box body 3.

[0031] For example, such as Figure 1 , 2 As shown, the present invention also includes wire holes provided at equal intervals at the bottom of the box body 3 and close to the L-shaped guide strip 6, and a sealing wire sleeve 14 is provided inside the wire holes.

[0032] During use, the inlet and outlet wires pass through the sealing sleeve 14 to improve the sealing at the wire hole.

[0033] For example, such as Figure 1 As shown, the present invention also includes an integrally formed lever plate 4 provided at the top of one side of the sealing cover 5.

[0034] When in use, the hand lever 4 makes it easy to open and close the sealing cover 5 inserted between the L-shaped guide bars 6.

[0035] For example, such as Figure 1 As shown, the present invention also includes metal terminals 8 evenly spaced on one side of the bottom of the electronic overload relay 7.

[0036] When in use, the power transmission line of the step-up transformer is connected to the metal terminal 8, and the inlet and outlet lines pass through the sealed sleeve 14.

[0037] When in use, the mounting holes 1 on the Z-shaped fixing plate 2 and the matching bolts make it easy to fix the box 3 to one side of the step-up transformer. Loosening the locking nut 12 allows the sliding screw 13 to slide in the strip-shaped sliding hole 11, thereby sliding the sliding plate 18 out of the box 3, which makes it easy to install the electronic overload relay 7 on the top of the sliding plate 18.

[0038] Next, move the electronic overload relay 7 into the housing 3, connect the power transmission wire of the step-up transformer to the metal terminal 8, and let the inlet and outlet wires pass through the sealing wire sleeve 14. Wrap the excess wires around the fixing screw 9 and place them inside the pressure pad 16. Tighten the pressure nut 15 to make the pressure pad 16 press the wound wires tightly, thereby fixing the wound wires.

[0039] Insert the sealing cap 5 between the L-shaped guide strips 6 to seal the box body 3, which greatly improves the dustproof effect and prevents damage caused by accidental impact.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An overload protection device for a step-up transformer, characterized in that, The device includes a Z-shaped fixing plate (2), a box body (3), a sealing cover (5), and an electronic overload relay (7). Both ends of one side of the box body (3) are fitted with L-shaped guide strips (6) by screws, and a sealing cover (5) is inserted between the L-shaped guide strips (6). Both sides of the bottom end of the box body (3) are provided with strip-shaped sliding holes (11), and sliding screws (13) slide in the strip-shaped sliding holes (11). A sliding plate (18) is installed between the sliding screws (13) through screw holes. An electronic overload relay (7) is installed on the top of the sliding plate (18) by bolts. The bottom end of the box (3) is fitted with a hanging plate (10) by screws. On one side of the hanging plate (10), a wire fixing screw (9) is installed at equal intervals through screw holes. One end of the wire fixing screw (9) is fitted with a wire pressing washer (16) and a wire pressing nut (15), and the wire pressing nut (15) is located outside the wire pressing washer (16).

2. The overload protection device for a step-up transformer according to claim 1, characterized in that, Z-shaped fixing plates (2) are welded to both sides of the box body (3) and close to the back of the box body (3), and mounting holes (1) are provided on the Z-shaped fixing plates (2).

3. The overload protection device for a step-up transformer according to claim 1, characterized in that, The other end of the sliding screw (13) is fitted with a locking nut (12) and the locking nut (12) is located outside the strip-shaped sliding hole (11).

4. The overload protection device for a step-up transformer according to claim 1, characterized in that, The bottom of the box (3) and close to the L-shaped guide strip (6) are provided with wire holes at equal intervals, and a sealing wire sleeve (14) is provided inside the wire holes.

5. The overload protection device for a step-up transformer according to claim 1, characterized in that, The sealing cover (5) has an integrally formed lever plate (4) at the top of one side.

6. The overload protection device for a step-up transformer according to claim 1, characterized in that, The electronic overload relay (7) has metal terminals (8) evenly spaced on one side of its bottom end.

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