Energy-saving transformer

Abstract

This invention discloses an energy-saving transformer, specifically relating to the field of transformer technology. It includes an insulating base on which an energy-saving control component is mounted. The energy-saving control component includes an insulating plate positioned above the insulating base and a winding cylinder positioned at the top of the insulating base. The invention utilizes a linkage drive mechanism composed of an electric push rod, a first linkage rod, and a second linkage rod to achieve lifting and lowering control of the insulating plate, subsequent connecting rods, and the tap changer. The elastic pull of the deflection rod by the first reset spring ensures that the tap changer and the winding cylinder remain in close contact, improving the stability of the closing contact. Simultaneously, the second reset spring provides precise reset force for the lifting frame and the insulating plate's lifting action, forming an action coordination with the drive mechanism. This allows for small, precise position adjustments of the tap changer, providing a reliable operational basis for subsequent three-phase load balancing and output voltage stability control.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, and more specifically, to an energy-saving transformer. Background Technology

[0002] As the core static electrical equipment in the power system that realizes AC voltage transformation, power transmission and distribution, transformers are widely used in various fields such as industrial production and civil power supply. Their operating efficiency and energy-saving performance directly affect the overall energy consumption level of the power system.

[0003] While existing transformers can basically achieve the core functions of voltage transformation and power transmission, they still have many technical defects in actual operation. These defects interact with each other, resulting in poor overall energy-saving effect and poor operational stability. Traditional transformers often have an integrated magnetic circuit structure, making it difficult to achieve rapid demagnetization when not in operation. When the equipment is idle, it still operates under no-load conditions, resulting in high no-load losses. Even when multiple transformers are used in conjunction with load switching, the lack of a precise on / off control mechanism makes economical switching impossible, leading to significant energy waste. During the closing process, the contact between the voltage regulation tap changer and the winding lacks a reliable elastic limit structure, resulting in poor contact stability and a tendency for poor contact. This leads to three-phase load imbalance, causing not only output voltage fluctuations and reduced power quality but also significantly increasing additional losses in the lines and transformers. During transformer closing, opening, and voltage regulation, the movement of the core control components is mostly rigid, lacking an effective buffer protection structure. Hard collisions between components can easily occur, causing structural wear and even damage, affecting the equipment's operational accuracy and service life. The decrease in accuracy further exacerbates the problems of load imbalance and increased losses. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an energy-saving transformer, which aims to solve the problems mentioned in the background art.

[0005] The present invention provides the following technical solution: an energy-saving transformer, comprising an insulating base, wherein an energy-saving control component is provided on the insulating base; The energy-saving control component includes an insulating plate disposed above an insulating base and a winding cylinder disposed on the top of the insulating base. Several connecting rods are disposed at the bottom of the insulating plate, and a deflection rod is hinged to the bottom end of each connecting rod. A tap switch is disposed at the end of the deflection rod away from the connecting rod. The tap switch contacts the winding cylinder to realize current transmission. The outer side of the connecting rod is hooked with a first reset spring. The bottom end of the first reset spring is hooked on the end of the deflection rod near the connecting rod. The tension of the first reset spring makes the tap changer always contact the surface of the winding cylinder. A connecting frame is provided on one side of each of the multiple connecting rods. A limit shaft is rotatably connected to the connecting frame. A deflection plate is snapped onto the outer side of the limit shaft. A vertical plate is provided at the end of the deflection plate away from the limit shaft. A closing plate is provided at the end of the vertical plate away from the deflection plate. A magnetic circuit core assembly is provided at the end of the connecting frame near the closing plate. The closing plate and the magnetic circuit core assembly can be in contact or separated. The magnetic circuit core assembly is made of stacked silicon steel sheets.

[0006] Furthermore, the energy-saving control component also includes a hinge shaft and a buffer. The hinge shaft is rotatably connected to the end of the connecting frame away from the deflection plate. One end of the buffer is located on the outside of the hinge shaft. The end of the buffer away from the hinge shaft is hinged to the bottom of the deflection plate. When the deflection plate rotates around the limiting shaft, it can drive the buffer to extend and retract under force. A wiring connector is provided on the side wall of the vertical plate near the deflection plate. The wiring connector is used to connect external wires to conduct current. Furthermore, a lifting frame is provided on the top of the insulating plate, and a slider is provided on the outer side wall of the lifting frame. A vertical rod is provided on one side of the top of the insulating base. The slider and the vertical rod are slidably engaged. The height of the insulating plate and the connecting rod can be adjusted along the vertical direction of the insulating base through the sliding engagement of the slider and the vertical rod. A second return spring is hooked on the top of the lifting frame. The end of the second return spring away from the lifting frame is hooked on the top of the vertical rod. An electric push rod is hinged to one side of the top of the vertical rod. A first linkage rod is slidably connected to the output end of the electric push rod. The end of the first linkage rod away from the electric push rod is hinged to the vertical rod. A second linkage rod is hinged to the middle of the first linkage rod. The end of the second linkage rod away from the first linkage rod is hinged to the top of the lifting frame.

[0007] The technical effects and advantages of this invention are as follows: 1. The electric push rod of this invention, together with the first linkage rod and the second linkage rod, forms a linkage drive mechanism, which realizes the lifting and lowering control of the insulating plate, subsequent connecting rods, and tap changer. With the elastic pull of the deflection rod by the first reset spring, it ensures that the tap changer and the winding cylinder are always in close contact, improving the stability of the closing contact. At the same time, the second reset spring provides a precise reset force for the lifting frame and the insulating plate, forming an action coordination with the drive mechanism, so that the tap changer can achieve small and precise position fine adjustment, providing a reliable action basis for subsequent three-phase load balance adjustment and output voltage stability control. 2. This invention is supported by the precise action of the drive mechanism and the reset structure. The tap changer can be finely adjusted to adjust the contact position with the winding drum according to the power demand, so as to achieve precise adjustment of the transformer ratio, effectively maintain the three-phase load balance, improve the power quality, and at the same time, from the circuit level of power transmission, it significantly reduces the additional losses of the line and transformer caused by load imbalance and voltage fluctuation. Together with the no-load loss control at the subsequent magnetic circuit level, it forms a dual energy-saving system to improve the overall energy-saving effect. 3. The contactable and separable design of the closing plate and the magnetic circuit core assembly in this invention enables flexible on / off control of the transformer's magnetic circuit. In non-working states, the two can be quickly separated to promptly cut off the magnetic circuit and stop equipment operation, thus avoiding no-load losses at the source. At the same time, the magnetic circuit core assembly is made of laminated silicon steel sheets, which can effectively reduce hysteresis losses and eddy current losses during the core's operation. This ensures the efficiency of electromagnetic induction and further reduces magnetic circuit operating losses. In conjunction with the additional loss control at the circuit level, it achieves energy consumption optimization for the transformer under all operating conditions, making the energy-saving effect more significant. 4. The hinged connection between the buffer, deflection plate, and connecting frame of this invention provides effective hydraulic buffering for the rotational movement of the deflection plate, vertical plate, and closing plate during the closing and opening processes. This avoids rigid collisions between components, reduces wear and damage to the tap changer, magnetic circuit core assembly, and closing plate, and ensures that each component maintains precise operating accuracy over a long period. This enables the aforementioned effects of load balancing regulation, voltage stability control, and low-loss energy saving to be achieved stably and for a long time, while also extending the overall service life of the transformer and reducing equipment maintenance and replacement costs. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0009] Figure 1 This is a side view of the overall structure of the present invention.

[0010] Figure 2 This is a schematic diagram of the energy-saving control component of the present invention.

[0011] Figure 3 This is a schematic diagram of the connecting frame vertical rod, deflection plate, closing plate, magnetic circuit core assembly and connector of the present invention.

[0012] Figure 4 This is a schematic diagram of the insulating plate, connecting rod, first reset spring, deflection rod, and tap changer of the present invention.

[0013] Figure 5 This is a schematic diagram of the slider, lifting bracket, and second reset spring of the present invention.

[0014] Figure 6 This is a schematic diagram of the insulating base, winding cylinder, vertical rod, second linkage rod, first linkage rod, and electric push rod of the present invention.

[0015] Figure 7 This is a schematic diagram of the connecting frame, limiting shaft, and magnetic circuit core assembly of the present invention.

[0016] Figure 8 This is a schematic diagram of the closing plate, vertical plate, connector, buffer, hinge shaft and deflection plate of the present invention.

[0017] The attached diagram is labeled as follows: 1. Insulating base; 2. Insulating plate; 3. Connecting rod; 4. First reset spring; 5. Deflecting rod; 6. Tap switch; 7. Winding cylinder; 8. Connecting frame; 9. Limiting shaft; 10. Deflecting plate; 11. Hinge shaft; 12. Buffer; 13. Vertical plate; 14. Closing plate; 15. Magnetic circuit core assembly; 16. Wiring connector; 17. Slider; 18. Lifting frame; 19. Second reset spring; 20. Electric push rod; 21. First linkage rod; 22. Second linkage rod; 23. Vertical rod. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Example 1

[0019] This embodiment discloses an energy-saving transformer, which specifically solves the technical problems of large no-load loss, easy imbalance of three-phase load, and easy fluctuation of output voltage in existing transformers.

[0020] The energy-saving transformer of this embodiment includes an insulating base 1, which is made of epoxy resin and serves as an overall support and insulation protection. An energy-saving control component is integrated on the insulating base 1. This component is the core structure for the transformer to achieve energy saving and voltage stability. It includes an insulating plate 2, a connecting rod 3, a first reset spring 4, a deflection rod 5, a tap changer 6, a winding cylinder 7, a connecting frame 8, a limit shaft 9, a deflection plate 10, a hinge shaft 11, a buffer 12, a vertical plate 13, a closing plate 14, a magnetic circuit core assembly 15, a wiring connector 16, a slider 17, a lifting frame 18, a second reset spring 19, an electric push rod 20, a first linkage rod 21, a second linkage rod 22, and a vertical rod 23.

[0021] As attached Figure 1 Appendix Figure 2 Appendix Figure 4 As shown, the insulating plate 2 is horizontally positioned at the top center of the insulating base 1. Three connecting rods 3 are arranged in an array at the bottom of the insulating plate 2, each corresponding to one of the three phases of the transformer circuit. The bottom end of each connecting rod 3 is hinged to a deflecting rod 5 via a pin. The deflecting rod 5 can rotate around the hinge point. A tap changer 6 is located at the end of the deflecting rod 5 away from the connecting rod 3. A winding cylinder 7 is located at the top of the insulating base 1 corresponding to the tap changer 6. The transformer winding is wound on the outside of the winding cylinder 7. The tap changer 6 contacts the winding surface of the winding cylinder 7 to realize the transmission and regulation of current. A hook is welded to the outer wall of the connecting rod 3, and a first reset spring 4 is hooked on the hook. The bottom end of the first reset spring 4 is hooked on the hook at the end of the deflection rod 5 near the connecting rod 3. The first reset spring 4 is always in a stretched state, and its tension can make the tap changer 6 always tightly contact the surface of the winding cylinder 7, avoiding circuit failure caused by poor contact. Example 2

[0022] Based on Example 1, this embodiment is illustrated in the appendix. Figure 3 Appendix Figure 7 Appendix Figure 8 As shown, a connecting frame 8 is provided on one side of each of the multiple connecting rods 3. The connecting frame 8 is an integrated metal bracket that serves to fix the components and transmit force. A limiting shaft 9 is rotatably connected to the middle of the connecting frame 8. A bearing is provided between the limiting shaft 9 and the connecting frame 8 to reduce rotational friction. A deflection plate 10 is interference-fitted to the outside of the limiting shaft 9. The deflection plate 10 can rotate around the limiting shaft 9. The end of the connecting frame 8 away from the deflection plate 10 is rotatably connected to a hinge shaft 11. A buffer 12 is provided on the outside of the hinge shaft 11. In this embodiment, the buffer 12 is a hydraulic buffer. The end of the buffer 12 away from the hinge shaft 11 is hinged to the bottom of the deflection plate 10. When the deflection plate 10 rotates around the limiting shaft 9, it can drive the buffer 12 to perform telescopic movement. The buffer 12 plays a buffering role on the rotational movement of the deflection plate 10 through hydraulic damping, avoiding damage to the components due to rigid collision.

[0023] A vertical plate 13 is vertically mounted on the end of the deflection plate 10 furthest from the limit shaft 9. A closing plate 14 is mounted on the end of the vertical plate 13 furthest from the deflection plate 10. The closing plate 14 is a conductive metal plate. A magnetic circuit core assembly 15 is mounted on the end of the connecting frame 8 near the closing plate 14, as shown in the attached figure. Figure 7 As shown, the magnetic circuit core assembly 15 is made of several stacked silicon steel sheets and fastened with bolts. The silicon steel sheets can reduce the hysteresis loss and eddy current loss of the core. The closing plate 14 can be in contact with or separated from the magnetic circuit core assembly 15. When the two contacts, they form a complete electromagnetic induction circuit, and the transformer operates normally. When they separate, the magnetic circuit is broken, and the transformer stops working, allowing for timely power outages when not in use and reducing no-load losses. A wiring connector 16 is provided on the side wall of the vertical plate 13 away from the deflection plate 10. The wiring connector 16 is a copper connector, which is electrically connected to the closing plate 14 and is used to connect external wires to conduct current and ensure the continuity of the circuit.

[0024] As attached Figure 5 Appendix Figure 6As shown, a lifting frame 18 is provided at the top center of the insulating plate 2. The lifting frame 18 is a metal frame, and a slider 17 is provided on one side of the lifting frame 18. Vertical rods 23 are vertically provided on the top of the insulating base 1 corresponding to the position of the slider 17. The slider 17 has sliding holes that match the vertical rods 23. The slider 17 and the vertical rods 23 slide together, allowing the insulating plate 2 and the connecting rod 3 to move up and down along the vertical direction of the insulating base 1, thereby achieving height adjustment. A second return spring 19 is hooked on the top of the lifting frame 18, and the other end of the second return spring 19 is hooked on the top of the vertical rod 23. The second return spring 19 provides a return force for the lifting movement of the insulating plate 2, ensuring the return accuracy of the component movement.

[0025] An electric push rod 20 is hinged to one side of the top of the vertical rod 23. The electric push rod 20 is a servo electric push rod, which can realize precise extension and retraction control. The output end of the electric push rod 20 is slidably connected to the first linkage rod 21 through a sliding sleeve. The end of the first linkage rod 21 away from the electric push rod 20 is hinged to the middle of the vertical rod 23. The middle of the first linkage rod 21 is hinged to the second linkage rod 22 through a pin. The end of the second linkage rod 22 away from the first linkage rod 21 is hinged to the lifting frame 18. The electric push rod 20, the first linkage rod 21, and the second linkage rod 22 constitute a linkage drive mechanism to provide power for the lifting and lowering of the insulating plate 2.

[0026] The specific working principle is as follows: During the transformer closing operation, the electric push rod 20 is activated, and the output end of the electric push rod 20 extends, pushing the first linkage rod 21 to rotate around its hinge point with the vertical rod 23. The first linkage rod 21 drives the second linkage rod 22 downward through the lifting frame 18 to push the slider 17. The slider 17 slides downward along the vertical rod 23, thereby driving the lifting frame 18, the insulating plate 2, and the connecting rod 3 to move downward synchronously. When the connecting rod 3 moves downward, it pushes the deflection rod 5 to rotate around the hinge point, so that the tap changer 6 is in closer contact with the surface of the winding cylinder 7. At the same time, the first reset spring 4 is further stretched, and its tension further ensures the contact stability between the tap changer 6 and the winding cylinder 7. At the same time, the connecting rod 3 moves downward, causing the connecting frame 8 to move downward synchronously. The connecting frame 8 drives the deflection plate 10 to rotate around the limiting shaft 9, so that the closing plate 14 moves closer to the magnetic circuit core group 15 and finally makes close contact with the magnetic circuit core group 15, forming a complete electromagnetic induction magnetic circuit. The transformer starts to work normally. During this process, the rotation of the deflection plate 10 will drive the buffer 12 to extend and retract. The buffer 12 plays a buffering role in the contact between the closing plate 14 and the magnetic circuit core group 15, avoiding rigid collision. The external wire is electrically connected to the closing plate 14 through the wiring connector 16 to realize the conduction of current.

[0027] During voltage regulation and load balancing, when the transformer needs to fine-tune the output voltage and maintain three-phase load balance, the electric push rod 20 slightly extends and retracts, driving the insulation plate 2 to make a small lifting and lowering motion, which in turn causes the tap changer 6 to make a small displacement on the winding surface of the winding drum 7, changing the contact position between the tap changer 6 and the winding drum 7, thereby realizing the fine adjustment of the transformer ratio, thus ensuring the stability of the output voltage, while keeping the three-phase load balanced, and reducing the additional losses of the line and transformer.

[0028] During the transformer tripping shutdown process, when the transformer is not in operation, the output end of the control electric push rod 20 retracts, pulling the first linkage rod 21 to rotate in the opposite direction. The first linkage rod 21 drives the second linkage rod 22 to pull the slider 17 upward. The slider 17 slides upward along the vertical rod 23, causing the insulating plate 2 and the connecting rod 3 to move upward synchronously. When the connecting rod 3 moves upward, the tension of the first reset spring 4 drives the deflection rod 5 to rotate in the opposite direction, reducing the contact pressure between the tap changer 6 and the winding cylinder 7. At the same time, the connecting frame 8 moves upward, driving the deflection plate 10 to rotate in the opposite direction, causing the closing plate 14 to separate from the magnetic circuit core group 15, breaking the magnetic circuit, and stopping the transformer from working. This achieves timely power outage when not in use, effectively reducing the transformer's no-load loss. During this process, the reset force of the second reset spring 19 can assist the insulating plate 2 to quickly reset, ensuring the timeliness of the tripping action.

[0029] In the above technical solution, the contact between the tap changer 6 and the winding drum 7 is achieved by deflection. The contact position is adjustable by the deflection action to ensure stable output voltage. The transformer windings wound on the outside of the winding drum 7 have a segmented and layered structure. The deflection action of the tap changer 6 will cause the contact position between it and the winding drum 7 to produce a gap displacement. By changing the contact with different winding segments, the transformer ratio can be adjusted slightly and accurately. It can adapt to the voltage fluctuation requirements of the power system in real time, complete the fine calibration of the output voltage, and solve the problems of low voltage regulation accuracy and unstable output of traditional transformers.

[0030] Furthermore, the three-phase load dynamic balance technology solution, which adapts to the independent adjustment of three-phase loads, features three-phase independent configurations for connecting rod 3, deflection rod 5, and tap changer 6. Each phase tap changer 6 can deflect independently and achieve intermittent contact with the winding drum 7. This allows for adjustment of the contact position to match the load requirements of each phase based on the load differences in the three-phase circuit, thereby eliminating the three-phase load imbalance problem at its source, improving power quality, reducing additional losses in lines and transformers caused by load imbalance, and directly linking with energy-saving goals at the circuit level.

[0031] The deflection of the tap changer 6 results in indirect contact, while the elastic pull of the first reset spring 4 enables adjustable tight contact. The deflection action provides flexibility in adjusting the contact position, and the tension of the first reset spring 4 ensures that the tap changer 6 can make tight contact with the winding cylinder 7 regardless of the deflection position. This avoids problems such as poor contact and arcing due to changes in the contact position, thus ensuring the effectiveness of voltage regulation and improving the circuit stability during closing operation.

[0032] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An energy-saving transformer, characterized in that: Includes an insulating base (1), on which an energy-saving control component is provided; The energy-saving control component includes an insulating plate (2) disposed above an insulating base (1) and a winding cylinder (7) disposed on the top of the insulating base (1). Several connecting rods (3) are disposed at the bottom of the insulating plate (2). A deflection rod (5) is hinged to the bottom end of each connecting rod (3). A tap switch (6) is disposed at the end of the deflection rod (5) away from the connecting rod (3). The tap switch (6) contacts the winding cylinder (7) to realize current transmission. The outer side of the connecting rod (3) is hooked with a first reset spring (4), the bottom end of the first reset spring (4) is hooked on the deflection rod (5) near the end of the connecting rod (3), and the tension of the first reset spring (4) makes the tap switch (6) always abut against the surface of the winding cylinder (7). A connecting frame (8) is provided on one side of each of the multiple connecting rods (3). A limiting shaft (9) is rotatably connected to the connecting frame (8). A deflection plate (10) is snapped onto the outside of the limiting shaft (9). A vertical plate (13) is provided at the end of the deflection plate (10) away from the limiting shaft (9). A closing plate (14) is provided at the end of the vertical plate (13) away from the deflection plate (10). A magnetic circuit core assembly (15) is provided at the end of the connecting frame (8) near the closing plate (14). The closing plate (14) and the magnetic circuit core assembly (15) can contact or separate. The magnetic circuit core assembly (15) is made of stacked silicon steel sheets.

2. The energy-saving transformer according to claim 1, characterized in that: The energy-saving control component also includes a hinge shaft (11) and a buffer (12). The hinge shaft (11) is rotatably connected to one end of the connecting frame (8) away from the deflection plate (10), and one end of the buffer (12) is located on the outside of the hinge shaft (11).

3. An energy-saving transformer according to claim 2, characterized in that: The end of the buffer (12) away from the hinge axis (11) is hinged to the bottom of the deflection plate (10). When the deflection plate (10) rotates around the limiting axis (9), it can drive the buffer (12) to extend and retract under force.

4. An energy-saving transformer according to claim 1, characterized in that: A wiring connector (16) is provided on the side wall of the vertical plate (13) near the deflection plate (10). The wiring connector (16) is used to connect external wires to conduct current.

5. An energy-saving transformer according to claim 1, characterized in that: The top of the insulating plate (2) is provided with a lifting frame (18), and the outer side wall of the lifting frame (18) is provided with a slider (17). The top side of the insulating base (1) is provided with a vertical rod (23), and the slider (17) and the vertical rod (23) slide together.

6. An energy-saving transformer according to claim 5, characterized in that: The insulating plate (2) and the connecting rod (3) achieve height adjustment along the vertical direction of the insulating base (1) through the sliding cooperation of the slider (17) and the vertical rod (23).

7. An energy-saving transformer according to claim 6, characterized in that: The top of the lifting frame (18) is hooked with a second reset spring (19), and the end of the second reset spring (19) away from the lifting frame (18) is hooked to the top of the vertical rod (23).

8. An energy-saving transformer according to claim 5, characterized in that: An electric push rod (20) is hinged to one side of the top of the vertical rod (23). The output end of the electric push rod (20) is slidably connected to a first linkage rod (21). The end of the first linkage rod (21) away from the electric push rod (20) is hinged to the vertical rod (23). A second linkage rod (22) is hinged to the middle of the first linkage rod (21). The end of the second linkage rod (22) away from the first linkage rod (21) is hinged to the top of the lifting frame (18).

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