Power transformer with overload protection function

Abstract

The utility model relates to the technical field of transformers, in particular to a power transformer with an overload protection function. According to the technical scheme, the power transformer comprises a power transformer body and a plurality of pairs of connecting wires installed on the power transformer body, and further comprises a pair of cut-off mechanisms arranged on the power transformer body and used for cutting off the connecting wires after horizontally moving; and the driving mechanism is arranged on the upper surface of the power transformer body and is used for simultaneously opening or closing the pair of cutting mechanisms. According to the overload protection device, the connection line, the cut-off mechanism, the driving mechanism and other structures are matched, when the connection line is overloaded in the long-term operation of the power transformer, the overload protection device does not need to be replaced frequently, and only the connection line needs to be connected with the power transformer again. Especially under the environment of high load and high use frequency, the device does not depend on one-time disconnection and replacement, so that the replacement frequency is lower, and excessive maintenance cost does not need to be input.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to a power transformer with overload protection function. Background Technology

[0002] A power transformer is an electrical device used for alternating current (AC) voltage conversion. Its main function is to convert AC power of one voltage level to AC power of another. Transformers operate on the principle of electromagnetic induction, effectively changing voltage without altering the frequency of the electrical energy, thus meeting the needs of different power systems. Overload protection devices for some power transformers typically use fuses, which have the ability to completely interrupt current in overload protection. In existing technology, once a fuse blows, the circuit is completely broken, preventing any further current from flowing and protecting electrical equipment from overload damage. However, it needs to be replaced after blowing, requiring the purchase of a new fuse each time it blows. While the cost of a single fuse is low, frequent fuse blowing can significantly increase maintenance costs. Utility Model Content

[0003] The purpose of this invention is to address the problem in existing technologies where fuses need to be replaced after each blow, requiring the purchase of a new fuse each time. While the cost of a single fuse is low, many large-scale power systems or equipment require multiple fuses. Frequent fuse blowouts significantly increase maintenance costs. This invention proposes a power transformer with overload protection.

[0004] The technical solution of this utility model is as follows: A power transformer with overload protection function includes a power transformer body and multiple pairs of connecting wires installed on the power transformer body, and further includes: a pair of cutting mechanisms, which are installed on the power transformer body and cut the connecting wires after moving horizontally; and a drive mechanism installed on the upper surface of the power transformer body to simultaneously open or close the pair of cutting mechanisms.

[0005] Optionally, the cutting mechanism includes a drive rod, the lower surface of which is fixedly connected with a plurality of sliding blades that hold the connecting wires, the bottom end of which is fixedly connected with a base plate, the bottom end of which is fixedly connected with a sliding block, and a pair of support rails that support the horizontal sliding of the corresponding drive rod are fixedly connected to the power transformer body, the top of which is provided with a sliding groove for the sliding block to be engaged.

[0006] Optionally, the drive mechanism includes a dual-axis motor fixedly connected to the upper surface of the power transformer body. The dual-axis motor is connected to the input terminal of the controller. An infrared temperature sensor for monitoring the temperature of the connecting wire is also provided on the upper surface of the power transformer body directly below the dual-axis motor. The infrared temperature sensor is connected to the output terminal of the controller. A pair of output shafts of the dual-axis motor are fixedly connected to rotating rods. A gear is fixedly connected to the end of the rotating rod away from the dual-axis motor. A rack that meshes with the gear is provided on the upper surface of the drive rod.

[0007] Optionally, a pair of support blocks are fixedly connected to the upper surface of the power transformer body to support the rotation of the corresponding rotating rod.

[0008] Optionally, the upper surface of the power transformer body is provided with a protective cover to cover the drive mechanism.

[0009] Optionally, a pair of connecting blocks are fixedly connected to both outer walls of the protective cover, and mounting screws are movably connected to each connecting block. The upper surface of the power transformer body has multiple screw holes that are spirally connected to the bottom end of the mounting screws.

[0010] Optionally, a pair of the cutting mechanisms are symmetrically arranged on both sides of the power transformer body with the infrared temperature sensor as the center.

[0011] In summary, this application includes at least one of the following beneficial technical effects:

[0012] This invention utilizes the coordination of connecting wires, a cutting mechanism, and a driving mechanism. When the connecting wires of the power transformer experience overload during long-term operation, the overload protection device does not require frequent replacement; simply reconnecting the connecting wires to the power transformer suffices. Especially in high-load, high-frequency environments, it avoids reliance on one-time disconnection and replacement, resulting in a lower replacement frequency and reduced maintenance costs. Attached Figure Description

[0013] Figure 1 A schematic diagram of the structure of a power transformer with overload protection function according to this utility model is provided;

[0014] Figure 2 for Figure 1 A schematic diagram of the split structure;

[0015] Figure 3 for Figure 2 A schematic diagram showing the disassembled structure of the central support rail and the drive rod.

[0016] Reference numerals in the attached diagram: 1. Power transformer body; 11. Connecting wire; 12. Screw hole; 2. Dual-axis motor; 3. Infrared temperature sensor; 4. Rotating rod; 5. Gear; 6. Support block; 7. Protective cover; 71. Connecting block; 72. Mounting screw; 8. Support rail; 81. Sliding slot; 9. Driving rod; 91. Rack; 92. Sliding blade; 93. Base plate; 94. Sliding block. Detailed Implementation

[0017] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0018] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0019] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example

[0024] like Figures 1 to 3 As shown, this utility model proposes a power transformer with overload protection function, including a power transformer body 1 and several pairs of connecting wires 11 installed on the power transformer body 1. Each connecting wire 11 passes between a pair of sliding blades 92. A pair of support blocks 6 supporting the rotation of the corresponding rotating rod 4 are fixedly connected to the upper surface of the power transformer body 1. A protective cover 7 covering the drive mechanism is provided on the upper surface of the power transformer body 1. A pair of connecting blocks 71 are fixedly connected to the outer walls on both sides of the protective cover 7. Each connecting block 71 is movably connected to a mounting screw 72, which facilitates the installation and removal of the protective cover 7 from the drive mechanism. The upper surface of the power transformer body 1 has multiple screw holes 12 that are spirally connected to the bottom end of the mounting screws 72. The power transformer body 1 also includes: a pair of cutting mechanisms, which are symmetrically arranged on both sides of the power transformer body 1 with the infrared temperature sensor 3 as the center. After moving horizontally on the power transformer body 1, the cutting mechanisms cut the connecting wires 11; and a drive mechanism installed on the upper surface of the power transformer body 1 that simultaneously opens or closes the pair of cutting mechanisms.

[0025] Furthermore, the cutting mechanism includes a drive rod 9, the lower surface of which is fixedly connected to multiple sliding blades 92 that hold the connecting wires 11. The sliding blades 92 are made of copper alloy, which has excellent conductivity and corrosion resistance. Copper alloy also has a certain degree of hardness, ensuring that it will not be excessively worn when cutting under high current. A base plate 93 is fixedly connected to the bottom end of the sliding blades 92, and a sliding block 94 is fixedly connected to the bottom end of the base plate 93. The sliding block 94 slides in the sliding groove 81 to ensure that the cutting mechanism slides horizontally. A pair of support rails 8 are fixedly connected to the power transformer body 1 to support the horizontal sliding of the drive rod 9. The top of the support rails 8 has a sliding groove 81 for the sliding block 94 to be engaged.

[0026] Furthermore, the drive mechanism includes a dual-axis motor 2 fixedly connected to the upper surface of the power transformer body 1. The dual-axis motor 2 is a motor with two independent axes (or rotation directions), typically used in applications requiring precise control in two different directions. The main characteristic of this type of motor is its ability to provide power in both axes and to independently control the rotation of each axis. The dual-axis motor 2 is connected to the input terminal of the controller. An infrared temperature sensor 3, monitoring the temperature of the connecting wire 11, is also located on the upper surface of the power transformer body 1 directly below the dual-axis motor 2. The infrared temperature sensor 3 is a sensor that measures the temperature of an object using the principle of infrared radiation. Unlike traditional contact temperature sensors (such as thermocouples or RTD sensors), the infrared temperature sensor estimates the temperature of an object by sensing the infrared radiation emitted from its surface; therefore, it is a non-contact temperature measurement method. The infrared temperature sensor 3 is connected to the output terminal of the controller. A pair of output shafts of the dual-axis motor 2 are each fixedly connected to a rotating rod 4. A gear 5 is fixedly connected to the end of the rotating rod 4 away from the dual-axis motor 2. A rack 91 meshes with the gear 5 on the upper surface of the driving rod 9.

[0027] In this embodiment, when a power transformer with overload protection is required, such as... Figure 1 As shown, when the overload temperature of the connecting wire 11 connected to the power transformer body 1 is high, the infrared temperature sensor 3 detects that the temperature of the connecting wire 11 is too high and sends a signal to the controller. Upon receiving the signal, the controller starts the dual-axis motor 2. After the dual-axis motor 2 starts, a pair of output shafts drive the corresponding rotating rod 4 to rotate. The end of the rotating rod 4 away from the dual-axis motor 2 drives the corresponding gear 5 to rotate. Since the gear 5 is meshed with the rack 91 on the upper surface of the driving rod 9, the gear 5 drives the rack 91 to move horizontally. The rack 91 then drives the driving rod 9 and multiple sliding blades 92 at its bottom to move in sequence. After moving, the multiple sliding blades 92 can cut the corresponding connecting wire 11, thereby protecting the power transformer body 1 and preventing damage to the power transformer body 1. When the multiple sliding blades 92 move, they drive the bottom plate 93 at its bottom to move. The bottom plate 93 drives the sliding block 94 at its bottom to slide in the sliding slot 81 through the support of the support rail 8. When the dual-axis motor 2 is restarted, the pair of output shafts of the dual-axis motor 2 drive the corresponding rotating rod 4 to rotate in the opposite direction, so that the cutting mechanism can be restored to its original position, and the cut-off connecting wire 11 can be reconnected to the power transformer body 1 for reuse.

[0028] The preferred embodiments of this utility model described above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A power transformer having an overload protection function, comprising a power transformer body (1) and a plurality of pairs of connection lines (11) mounted on the power transformer body (1), characterized in that, Also include: A pair of cutting mechanism, set in the power transformer body (1) on the horizontal movement after the connection line (11) are cut; Installed on the upper surface of the power transformer body (1) at the same time open or close a pair of drive mechanism of cutting mechanism; The cutting mechanism includes a driving rod (9), the lower surface of the driving rod (9) is fixedly connected with a plurality of sliding blades (92) clamping the connection line (11), the bottom end of the sliding blade (92) is fixedly connected with the bottom plate (93), the bottom end of the bottom plate (93) is fixedly connected with the sliding block (94), the power transformer body (1) is fixedly connected with a pair of support rails (8) supporting the horizontal sliding of the corresponding driving rod (9), the top of the support rail (8) is provided with a sliding slot (81) for the sliding block (94) to be clamped into; The drive mechanism includes a double shaft motor (2) fixedly connected to the upper surface of the power transformer body (1), the double shaft motor (2) is connected with the input end of the controller, the upper surface of the power transformer body (1) is located directly below the double shaft motor (2) and is further provided with an infrared temperature sensor (3) for monitoring the temperature of the connection line (11), the infrared temperature sensor (3) is connected with the output end of the controller, a pair of output shafts of the double shaft motor (2) are fixedly connected with rotating rods (4), the ends of the rotating rods (4) away from the double shaft motor (2) are fixedly connected with gears (5), the upper surface of the driving rod (9) is provided with a rack (91) engaged with the gear (5).

2. The power transformer having an overload protection function according to claim 1, characterized by, The upper surface of the power transformer body (1) is fixedly connected with a pair of support blocks (6) supporting the rotation of the corresponding rotating rod (4).

3. The power transformer having an overload protection function according to claim 1, characterized by, The upper surface of the power transformer body (1) is provided with a protective cover (7) covering the drive mechanism.

4. The power transformer having an overload protection function according to claim 3, characterized in that, The both sides of the protective cover (7) are fixedly connected with a pair of connecting blocks (71), the connecting blocks (71) are movably connected with mounting screws (72), and the upper surface of the power transformer body (1) is provided with a plurality of screw holes (12) screwing with the bottom ends of the mounting screws (72).

5. The power transformer having an overload protection function according to claim 1, wherein A pair of the cutting mechanism is symmetrically arranged on both sides of the power transformer body (1) with the infrared temperature sensor (3) as the center.

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