A smart transformer with overload protection and early warning device

Abstract

This utility model provides an intelligent transformer with an overload protection and early warning device, belonging to the field of transformer technology. It includes a transformer, a transformer protector fixedly installed on the top of the transformer, and a winding reel on the top of the transformer. The winding reel is rotatably mounted on the top of the transformer via an elastic reset member. A transformer connection wire is wound around the outer wall of the winding reel. The terminals of the transformer protector and the transformer connection wire are connected via a spring wire. When the connection wire is pulled off the winding reel, as the winding reel rotates, one end of the spring wire winds around the outside of the winding reel, ensuring the stability of the connection between the spring wire and the transformer protector. The spring wire provides additional extension space, ensuring sufficient stretching space when the connection wire is connected to the transformer.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, specifically to an intelligent transformer equipped with an overload protection and early warning device. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change alternating current voltage. Its main components are the primary coil, the secondary coil, and the iron core (magnetic core). Its main functions include voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization (magnetic saturation transformer).

[0003] The following problems were found in the relevant technology: In order to improve the protection of transformers in their operating environment, early warning devices are usually equipped. Transformer protection devices are power automation products that integrate multiple functions such as protection, monitoring, control, and communication, and are the electrical unit constituting intelligent switchgear. This product has a built-in protection library consisting of more than twenty standard protection programs;

[0004] However, during the process of connecting the transformer to the protection device, the transformer needs to be connected to the lead wire, resulting in multiple branches in the transformer wiring. When connecting to the transformer protection device, the wiring may be too short, requiring the addition of another section of the connecting wire. This not only affects the efficiency of the installation process but also increases the safety of the construction process. To address this, we propose an intelligent transformer with an overload protection early warning device.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background section of this application, and therefore may include prior art information that does not constitute prior art information known to those skilled in the art. Utility Model Content

[0006] This utility model aims to solve at least one of the technical problems existing in the prior art or related technologies. To address the transformer protection problem in the prior art, this utility model provides an intelligent transformer with an overload protection early warning device. It utilizes a transformer with extended terminals integrated with the transformer's early warning protection structure to facilitate connection and improve assembly safety. The specific technical solution is as follows:

[0007] An intelligent transformer with an overload protection and early warning device includes a transformer, a transformer protector fixedly installed on the top of the transformer, a winding reel on the top of the transformer, and the winding reel being rotatably mounted on the top of the transformer via an elastic reset member. A transformer connection wire is wound around the outer wall of the winding reel, and the terminal of the transformer protector is connected to the transformer connection wire via a spring wire.

[0008] In the above technical solution, the elastic reset component includes a coil frame fixed to the top of the transformer, a take-up and release shaft is rotatably arranged inside the coil frame, and the winding reel is sleeved on the outer wall of the take-up and release shaft. An elastic element sleeved on the outer wall of the take-up and release shaft is provided between the winding reel and the inner wall of the coil frame.

[0009] The outer wall of the winding reel is fitted with a spiral partition, which forms a spiral take-up groove with the outer wall of the winding reel.

[0010] The back of the transformer protector is fitted with an outer cover that is fixed to the top of the transformer, and the outer cover covers the outside of the winding reel and the spring wire.

[0011] The outer wall of the outer casing, on the side away from the transformer protector, is provided with evenly spaced lead holes.

[0012] The outer wall of the end of the connecting wire that connects to the transformer is fitted with a limiting baffle that is snapped onto the outside of the lead hole.

[0013] The transformer protector control area is symmetrically fitted with a cover, and the cover is slidably mounted on the transformer via an opening and closing assembly.

[0014] The opening and closing assembly includes a lead screw rotatably mounted on the side wall of the transformer, and the outer wall of the lead screw is symmetrically threaded with a displacement seat fixed to the cover.

[0015] The transformer has a guide rod fixed to its side wall, which is parallel to the lead screw, and the displacement seat is sleeved on the outside of the guide rod.

[0016] Both the lead screw and the guide rod are located below the top plate of the transformer.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the intelligent transformer equipped with an overload protection and early warning device:

[0018] 1. Extend the connecting wire outward. If the connecting wire is stretched too long, the elastic reset component will automatically wrap the connecting wire around the outside of the winding spool, which will facilitate the connection process. During the wiring process, the wire can be stretched and retracted according to the wiring position, thereby avoiding the danger of secondary wiring.

[0019] Second, when the connecting wire is pulled off the winding reel, as the winding reel rotates, one end of the spring wire wraps around the outside of the winding reel, ensuring the stability of the connection between the spring wire and the transformer protector. The spring wire design increases the extension space, ensuring sufficient stretching space when the connecting wire is connected to the transformer.

[0020] Third, the spiral groove on the outer wall of the winding reel is formed by the spiral partition, and the spiral take-up groove makes the connecting wires wrap around the outer wall of the winding reel in sequence, ensuring the neatness of the take-up process.

[0021] Fourth, the operating area is protected by two cover doors to prevent accidental activation of the transformer protector. The two cover doors can move relative to each other or back to back using an opening and closing mechanism. When adjusting the preset value, the cover doors are opened, and after the adjustment is completed, the cover doors are closed. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an intelligent transformer equipped with an overload protection and early warning device according to the present invention;

[0023] Figure 2 This is an exploded front view diagram of an intelligent transformer equipped with an overload protection and early warning device according to the present invention.

[0024] Figure 3 This is an exploded side view of the structure of an intelligent transformer equipped with an overload protection and early warning device according to this utility model.

[0025] Figure 4 This is a schematic diagram of the structure of the winding spool and spring wire part of this utility model;

[0026] Figure 5 for Figure 3 Enlarged view of a portion at point A;

[0027] in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1-Transformer, 2-Transformer protector, 3-Connecting wire, 4-Spring wire, 5-Door, 6-Outer cover, 7-Winding reel, 8-Lead screw, 9-Retracting shaft, 10-Limiting baffle, 11-Lead hole, 12-Elastic element, 13-Roller frame, 14-Spiral divider, 15-Guide rod, 16-Displacement seat. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] The following are specific implementation cases and appendices. Figure 1-5 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0030] A smart transformer with an overload protection and early warning device includes a transformer 1. A transformer protector 2 is fixedly installed on the top of the transformer 1. The transformer protector 2 is a transformer protection device with three-stage phase-to-phase overcurrent protection: three-stage definite-time protection (I1, I2, I3) with composite voltage blocking. The phase-to-phase overcurrent protection can also be set to inverse-time protection (Ii) as protection against phase-to-phase short-circuit faults. A winding reel 7 is installed on the top of the transformer 1, and the winding reel 7 is rotatably mounted on the top of the transformer 1 via an elastic reset member. The winding reel 7 is used to wind the connecting wire 3.

[0031] The connecting wire 3 is stretched outwards. If the connecting wire 3 is stretched too long, the elastic reset component allows it to automatically wrap around the outside of the winding reel 7, facilitating the connection process. During wiring, the wire is stretched and retracted according to the wiring position, thus avoiding the dangers of secondary wiring. The transformer connecting wire 3 is wound around the outer wall of the winding reel 7. The terminals of the transformer protector 2 are connected to the transformer connecting wire 3 via a spring wire 4. One end of the spring wire 4 is connected to the transformer protector 2, and the other end of the spring wire 4 is fixedly connected to one end of the connecting wire 3 located on the winding reel 7.

[0032] When the connecting wire 3 is pulled off the winding reel 7, as the winding reel 7 rotates, one end of the spring wire 4 is wound around the outside of the winding reel 7, ensuring the stability of the connection between the spring wire 4 and the transformer protector 2. The setting of the spring wire 4 increases a certain amount of extension space, ensuring that there is enough stretching space when the connecting wire 3 is connected to the transformer 1.

[0033] The elastic reset component includes a coil frame 13 fixed to the top of the transformer 1. The coil frame 13 has a rotatable take-up and release shaft 9 inside, and the winding reel 7 is sleeved on the outer wall of the take-up and release shaft 9. The coil frame 13 is fixedly installed at each terminal of the transformer protector 2. There is a rotatable take-up and release shaft 9 inside each coil frame 13. The winding reel 7 is fixedly sleeved on the outer wall of the take-up and release shaft 9 through the central mounting hole, so that the winding reel 7 rotates with the take-up and release shaft 9.

[0034] An elastic element 12, sleeved on the outer wall of the take-up shaft 9, is provided between the inner wall of the winding reel 7 and the winding frame 13. The elastic element 12 can be a spring-loaded spring, with its two ends fixed to the surface of the winding reel 7 and the inner wall of the winding frame 13, respectively. When the winding reel 7 rotates during the take-up and take-up process of the coupling wire 3, the elastic element 12 undergoes elastic deformation and generates elastic force.

[0035] It is worth noting that a spiral partition 14 is fitted onto the outer wall of the winding reel 7, and the spiral partition 14 and the outer wall of the winding reel 7 form a spiral take-up groove. The spiral partition 14 is fixedly fitted onto the outer wall of the winding reel 7.

[0036] The spiral groove 14 forms a spiral groove on the outer wall of the winding reel 7, and the spiral take-up groove causes the connecting wires 3 to be wound around the outer wall of the winding reel 7 in sequence, ensuring the neatness of the take-up process.

[0037] In addition, the back of the transformer protector 2 is fitted with an outer cover 6 that is fixed to the top of the transformer 1, and the outer cover 6 covers the outside of the winding reel 7 and the spring wire 4. The outer cover 6 fixed to the top of the transformer 1 protects the winding reel 7 and the spring wire 4.

[0038] In addition, lead wire holes 11 are evenly provided on the outer wall of the outer cover 6 on the side away from the transformer protector 2. Multiple lead wire holes 11 correspond to each winding disc 7, so that the connecting wire 3 passes through the lead wire hole 11 and connects with the transformer 1.

[0039] Furthermore, a limiting baffle 10 is fitted onto the outer wall of the end of the connecting wire 3 that connects to the transformer 1, and is snapped onto the outside of the lead hole 11. The limiting baffle 10 is fixedly fitted onto the outer wall of the connecting wire 3, and the limiting baffle 10 is located at the end closer to the transformer 1, to prevent the connecting wire 3 from entering the interior of the outer casing 6 from the lead hole 11.

[0040] The control area of ​​the transformer protector 2 is symmetrically fitted with two covers 5, which are slidably mounted on the transformer 1 via an opening and closing assembly. The transformer protector 2 is operated and preset values ​​are adjusted via the button control area on the transformer protector 2. The two covers 5 are located outside the control area of ​​the transformer protector 2, protecting the operating area and preventing accidental activation of the transformer protector 2.

[0041] The two gates 5 can move relative to each other or back to back by the opening and closing components. When adjusting the preset value, the gates 5 are opened, and after the adjustment is completed, the gates 5 are closed.

[0042] The opening and closing assembly includes a lead screw 8 rotatably mounted on the side wall of transformer 1. The outer wall of the lead screw 8 is symmetrically threaded with displacement seats 16 that are fixedly connected to the cover 5. Two parallel fixed seats are fixedly installed at the top and bottom of transformer 1. The lead screw 8 rotates between the two fixed seats. Two external threads with opposite threads and the same pitch are opened from the center to both sides on the outer wall of the lead screw 8. The two displacement seats 16 are respectively opened with threaded through holes in opposite directions. When the lead screw 8 is rotated, the two displacement seats 16 cause the two cover 5 to move relative to each other or back to back.

[0043] A guide rod 15 parallel to the lead screw 8 is fixedly connected to the side wall of transformer 1, and a displacement seat 16 is sleeved on the outside of the guide rod 15. The two ends of the guide rod 15 are respectively fixed to the opposite surfaces of two fixed seats, and the displacement seat 16 is movably sleeved on the outside of the guide rod 15 through a through hole that penetrates the inner cavity.

[0044] During the process of rotating the lead screw 8 to move the displacement seat 16 and the gate 5, the displacement seat 16 slides against the outer wall of the guide rod 15. The stability of the gate 5 during movement is ensured by the guide rod 15, which is parallel to the lead screw 8.

[0045] Both the lead screw 8 and the guide rod 15 are located below the top plate of transformer 1. The lead screw 8 and the guide rod 15 are located in the corner groove formed by the top plate of transformer 1 and transformer 1. The cover 5 is located in front of the lead screw 8 and the guide rod 15, and the cover 5 slides against the surface of the top plate of transformer 1, thereby hiding the lead screw 8 and the guide rod 15 behind the cover 5.

[0046] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0047] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent transformer with overload protection early warning device, comprising a transformer (1), a transformer protector (2) is fixedly installed on the top of the transformer (1), characterized in that: The transformer (1) is provided with a winding disc (7) on its top, and the winding disc (7) is rotatably disposed on the top of the transformer (1) through an elastic reset member. The outer wall of the winding disc (7) is wound with a transformer connection wire (3). The terminal of the transformer protector (2) is connected to the transformer connection wire (3) through a spring wire (4).

2. The intelligent transformer with overload protection early warning device according to claim 1, characterized in that: The elastic reset component includes a coil frame (13) fixed to the top of the transformer (1), a take-up and release shaft (9) is rotatably provided inside the coil frame (13), and the winding reel (7) is sleeved on the outer wall of the take-up and release shaft (9). An elastic element (12) sleeved on the outer wall of the take-up and release shaft (9) is provided between the winding reel (7) and the inner wall of the coil frame (13).

3. The intelligent transformer with overload protection early warning device according to claim 2, characterized in that: The outer wall of the winding reel (7) is fitted with a spiral partition (14), and the spiral partition (14) and the outer wall of the winding reel (7) form a spiral take-up groove.

4. The intelligent transformer with overload protection and early warning device according to claim 3, characterized in that: The back of the transformer protector (2) is fitted with an outer cover (6) fixed to the top of the transformer (1), and the outer cover (6) covers the outside of the winding spool (7) and the spring wire (4).

5. A smart transformer with an overload protection early warning device according to claim 4, characterized in that: The outer casing (6) has lead holes (11) evenly distributed on the outer wall of the side away from the transformer protector (2).

6. A smart transformer with an overload protection early warning device according to claim 5, characterized in that: The outer wall of the end of the connecting wire (3) that is connected to the transformer (1) is fitted with a limiting baffle (10) that is snapped onto the outside of the lead hole (11).

7. A smart transformer with an overload protection and early warning device according to claim 1, characterized in that: The transformer protector (2) has a cover (5) symmetrically fitted on the outside of the control area, and the cover (5) is slidably mounted on the transformer (1) through an opening and closing assembly.

8. A smart transformer with an overload protection early warning device according to claim 7, characterized in that: The opening and closing assembly includes a lead screw (8) rotatably disposed on the side wall of the transformer (1), and the outer wall of the lead screw (8) is symmetrically threaded with a displacement seat (16) fixedly connected to the cover (5).

9. A smart transformer with an overload protection and early warning device according to claim 8, characterized in that: The side wall of the transformer (1) is fixed with a guide rod (15) parallel to the lead screw (8), and the displacement seat (16) is sleeved on the outside of the guide rod (15).

10. A smart transformer with an overload protection early warning device according to claim 9, characterized in that: Both the lead screw (8) and the guide rod (15) are located below the top plate of the transformer (1).

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