Voltage transformer capable of automatically eliminating electrical clearance

Abstract

The invention discloses a voltage transformer capable of automatically eliminating an electrical gap, and relates to the technical field of electrical equipment, the voltage transformer comprises a voltage transformer main body of a rectangular frame structure, and the outer walls of the two sides of the voltage transformer main body are both wound with windings used for achieving conversion of primary voltage and secondary voltage; a square through opening is formed in the center of the outer wall of the voltage transformer body, gap adjusting mechanisms are arranged on the upper side and the lower side of the inner wall of the voltage transformer body, a damping friction mechanism is arranged on the side, close to a winding, of the voltage transformer body, and magnetic flux leakage self-control mechanisms are arranged on the front side and the rear side of the inner wall of the voltage transformer body. The electrical gap can be dynamically adjusted through the partition plate which reciprocates up and down, so that the magnetic field distribution is optimized, the dynamic adjustment of the electrical gap can be automatically adapted according to load fluctuation, the stable operation of equipment is ensured, and the partition plate which reciprocates up and down can quickly respond to the change of the electrical gap and provide flexible overvoltage protection.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, and in particular to a voltage transformer capable of self-eliminating electrical gaps. Background Art

[0002] In traditional voltage transformers, the electrical gap between the core and the winding may cause magnetic flux leakage, magnetic saturation, and higher leakage induced voltage. These problems directly affect the accuracy and stability of the voltage transformer, especially in high-voltage power systems, which may interfere with the accuracy of protection devices and measuring instruments. With the development of power systems, the requirements for voltage measurement are getting higher and higher, especially in high-voltage and high-precision applications. The negative impact of electrical gaps on transformer performance is becoming more and more significant. In order to solve this problem, voltage transformers with electrical gaps eliminated have emerged. This type of voltage transformer uses a special structure and material in design to avoid the electrical gap between the winding and the core as much as possible. It even reduces the existence of air gaps by improving the core structure and using materials with high magnetic conductivity, thereby improving the performance of the voltage transformer. The background of this design is not only due to the demand for measurement accuracy, but also involves the reliability of power system protection. Since electrical gaps may cause induced voltage fluctuations, which in turn affects the working stability of protection devices, voltage transformers with electrical gaps eliminated can provide more stable output signals while avoiding these potential problems, ensuring the safety and reliability of system operation. There are still the following defects in specific use: 1. When the electrical gap is too large, the magnetic flux transmission between the winding and the core is insufficient, resulting in partial magnetic flux leakage, which reduces the induced voltage and reduces the output voltage accuracy of the transformer. Secondly, if the electrical gap is too small, the magnetic flux density of the core may be too large, causing the core to be in an oversaturated state. When the core material reaches the saturation point, it cannot further effectively conduct the magnetic flux, resulting in unstable output voltage or reduced accuracy. Oversaturation will cause uneven magnetic field distribution and affect the performance of the transformer.

[0003] 2. In addition, the inhomogeneity of the magnetic field will lead to unstable amplitude and waveform of the induced voltage in the winding. Since the induced voltage directly depends on the change of the magnetic field, if the magnetic field is unevenly distributed, the induced voltage will fluctuate or distort, thus affecting the accuracy of the voltage transformer. At the same time, the uneven distribution of the magnetic field will cause the magnetic flux in some areas to fail to be effectively transmitted, thereby reducing the working efficiency of the core. The magnetic field in some areas may be over-saturated or insufficient in flux, resulting in a decrease in the energy conversion efficiency of the core material, thereby increasing energy loss.

[0004] In view of this, the present invention proposes a voltage transformer with self-eliminating electrical gap to make up for and improve the deficiencies of the prior art. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a voltage transformer with self-eliminating electrical gap to solve the technical problems raised in the above background technology.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a voltage transformer with self-eliminating electrical gap, comprising a voltage transformer body with a rectangular frame structure, both outer walls of the voltage transformer body are wound with windings for realizing primary voltage and secondary voltage conversion, a square opening is opened at the center of the outer wall of the voltage transformer body, gap adjustment mechanisms are arranged on the upper and lower sides of the inner wall of the voltage transformer body, a damping friction mechanism is arranged on the side of the voltage transformer body close to the winding, and leakage magnetic self-control mechanisms are arranged on the front and rear sides of the inner wall of the voltage transformer body; The gap adjustment mechanism is used to optimize the electromagnetic performance of the winding and improve the accuracy of the secondary output by adjusting the electrical gap; The damping friction mechanism is used to reduce the stress accumulation of the voltage transformer body caused by mechanical vibration and high-frequency electromagnetic interference; The magnetic flux leakage automatic control mechanism is used to adjust the direction of the magnetic field by rotating the electromagnet to weaken the high-order harmonic components in the power grid.

[0007] Furthermore, the gap adjustment mechanism includes a support block fixedly connected to the outer wall of one side of the voltage transformer body, the support block is fixedly connected to a double-headed plate on the surface of one end away from the voltage transformer body, the double-headed plate is fixedly connected to the driving shaft on the central outer wall of one side away from the support block, the double-headed plate is fixedly connected to the external plate on the surface of one side away from the driving shaft, and two external plates are symmetrically arranged around the center of the double-headed plate, the driving shaft is fixedly connected to a rotating block at one end away from the double-headed plate, the rotating block is fixedly connected to a spring rod on the outer wall of one side away from the driving shaft, the two external plates are fixedly connected to a fixed long axis on the inner walls of one end away from the double-headed plates, the outer wall of one end of the spring rod away from the rotating block is rotatably connected to a connecting block, the outer wall of one side of the connecting block away from the spring rod is fixedly connected to a partition plate, the end of the connecting block away from the spring rod is fixedly connected to a sliding rod, and the lower end of the partition plate is fixedly connected to an obstacle block.

[0008] Furthermore, the initial position of the support block is located below the outer wall of the winding, the output end of the drive shaft away from the double-headed plate is externally connected to a reduction motor, and the initial position of the partition plate is in the same vertical plane as the square opening opened in the center of the outer wall of the voltage transformer body.

[0009] Furthermore, the partition plate is made of a wavy ceramic material, the sliding rod is slidably connected to the outer wall of the fixed long axis, and a protruding portion is provided at one end of the obstacle block.

[0010] Furthermore, the damping friction mechanism includes a telescopic cylinder fixedly connected to a square opening opened in the center of the outer wall of the voltage transformer body, the lower end of the telescopic cylinder is fixedly connected to a fixed block, the outer wall of the fixed block on a side away from the telescopic cylinder is fixedly connected to a rotating rod, the inner wall of the rotating rod on a side away from the fixed block is rotatably connected to an inner connecting rod, the inner wall of an end of the inner connecting rod away from the rotating rod is rotatably connected to a short rod, the outer wall of an end of the short rod away from the inner connecting rod is rotatably connected to a long rod, the end of the long rod close to the short rod is fixedly connected to a buckle, the outer walls on both sides of the buckle away from the short rod are fixedly connected to curved rods, the outer wall of an end of the curved rod away from the long rod is fixedly connected to a plurality of friction wheels, and the end of the long rod away from the short rod is fixedly connected to a vertical block.

[0011] Furthermore, a control switch is fixedly connected to the top of the telescopic cylinder, and the initial position of the control switch fixedly connected to the top of the telescopic cylinder is in the same vertical plane as the raised part set at the end of the obstacle block, and the short rod is rotatably connected to the deviated position of the center line of the outer wall of the long rod.

[0012] Furthermore, the outer walls at both ends of the curved rod are in the shape of deflected arc surfaces, and the multiple friction wheels are evenly distributed along the outer walls at both ends of the deflected arc surfaces of the curved rod. The initial positions of the multiple friction wheels are in contact with the outer wall of the winding, and the bottom surface of the end of the vertical block away from the long rod is fixedly connected to the square opening surface opened in the center of the outer wall of the voltage transformer body.

[0013] Furthermore, the magnetic leakage automatic control mechanism includes an annular gear fixedly connected to the outer wall of one side of the long rod, an internal gear is provided on the side of the annular gear away from the long rod, one end of the internal gear away from the annular gear is fixedly connected to a long plate, a fixed shaft is fixedly connected to the center of the side of the internal gear away from the annular gear, one end of the fixed shaft away from the inner gear is fixedly connected to a turntable, a sleeve shaft is sleeved on the outer wall of the fixed shaft, an external tube is fixedly connected to the outer wall of the sleeve shaft away from the fixed shaft, two external tubes are symmetrically arranged around the central axis of the sleeve shaft, the outer walls of the two external tubes away from the sleeve shaft are fixedly connected to vertical poles, an eccentric shaft is fixedly connected to the eccentric part of the side of the turntable away from the fixed shaft, one end of the eccentric shaft away from the vertical pole is fixedly connected to an inner rod, both ends of the inner rod are fixedly connected to rotating handles, and the outer walls of the two rotating handles away from the inner rod are fixedly connected to electromagnetic balls.

[0014] Furthermore, the inner gear is rotatably connected to the outer wall at the top end of the long plate, the inner gear and the ring gear mesh with each other and form a meshing transmission, and the bottom surface of one end of the long plate away from the inner gear is fixedly connected to the square opening surface opened in the center of the outer wall of the voltage transformer body.

[0015] Furthermore, one end of the two rotating handles away from the inner rod is rotatably connected to the outer wall of the vertical rod, and the initial position of the electromagnetic ball is at the point where the magnetic field and the current in the winding interact.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention can dynamically adjust the electrical gap through the partition plate that moves up and down, thereby optimizing the magnetic field distribution. The dynamic adjustment of the electrical gap can automatically adapt to the load fluctuation to ensure the stable operation of the equipment; by adjusting the gap, the magnetic flux distribution is optimized, the eddy current loss is reduced, and the output voltage fluctuation can be effectively suppressed. The partition plate that moves up and down can quickly respond to the change of the electrical gap and provide flexible overvoltage protection. When a sudden overvoltage or short circuit occurs, the gap adjustment mechanism can quickly increase the electrical gap and reduce the impact of current or voltage; the partition plate that moves up and down can change the magnetic field path between the winding and the core, effectively absorb and disperse the leakage magnetic field, and reduce the interference of the leakage magnetic field on the surrounding electrical equipment; the partition plate that moves up and down has a certain buffering effect, which can absorb the vibration or mechanical shock generated by the equipment during operation and reduce the impact on the internal components of the equipment; the gap adjustment mechanism helps to improve the airflow distribution inside the voltage transformer body and optimize the heat dissipation performance. By adjusting the gap and absorbing heat, local overheating or equipment failure due to heat accumulation can be avoided. By physically adjusting the gap, heat concentration can be reduced, heat dissipation efficiency can be improved, and equipment temperature can be reduced; (2) The friction wheel of the present invention rubs the electromagnetic wire, which can help eliminate irregularities or instabilities in the magnetic field and smooth the distribution of magnetic lines of force. Through regular or dynamic friction, the distribution of the magnetic field can be adjusted and optimized, thereby reducing efficiency loss and energy waste caused by uneven local magnetic flux density. The friction mechanism can help to make the magnetic flux density uniform and reduce the leakage magnetic field phenomenon in the voltage transformer body. By rubbing the coil, the generation of electromagnetic eddy currents can be effectively reduced, and heat generation can be reduced, thereby improving the working efficiency of the equipment. Friction can help eliminate any irregularities or stresses that may occur in the electromagnetic wire during operation. The friction process may cause the transfer of some heat, helping to improve the thermal management of the voltage transformer body. By rubbing the electromagnetic wire, electromagnetic noise and mechanical vibration caused by irregular magnetic fields can be reduced. The friction mechanism can effectively suppress the scattering or propagation of electromagnetic waves and reduce the impact of electromagnetic interference (EMI) on surrounding equipment. By rubbing the electromagnetic wire, high-frequency noise and other unnecessary electromagnetic wave interference can be balanced and weakened, thereby improving the electromagnetic compatibility of the equipment. (3) The electromagnetic ball of the present invention can dynamically adjust the magnetic field strength and direction, optimize the magnetic circuit distribution by rotating to absorb the leakage magnetic flux near the winding, reduce the leakage magnetic interference near the iron core and the winding, and reduce the eddy current loss, thereby improving the electromagnetic efficiency and accuracy of the voltage transformer body; the rotating electromagnetic ball can adjust the magnetic flux density according to the actual operating state (such as load changes) to ensure that the iron core and the winding always work in the optimal magnetization state, avoid oversaturation or insufficient magnetization of the magnetic circuit, and improve the stability and reliability of equipment operation; by adjusting the magnetic field direction by rotating the electromagnetic ball, the high-order harmonic components in the power grid can be offset or weakened, and the influence of harmonics on the output signal of the voltage transformer body can be reduced; when a short circuit or overvoltage occurs, the rotating electromagnetic ball can quickly adjust its own magnetic field, absorb excess transient electromagnetic energy, and reduce the damage to the winding and insulation system caused by the impact; the rotating electromagnetic ball can fine-tune the output voltage by controlling the electromagnetic absorption intensity to compensate for the output error caused by changes in ambient temperature or load; BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention; Figure 2 It is a schematic diagram of a partial three-dimensional structure of the gap adjustment mechanism of the present invention; Figure 3 It is a partial three-dimensional structural schematic diagram of the position relationship between the double-head plate and the driving shaft of the present invention; Figure 4 It is a schematic diagram of the partial three-dimensional structure of the position relationship between the sliding rod and the fixed long axis of the present invention; Figure 5 It is a partial three-dimensional structural schematic diagram of the position relationship between the obstacle block and the telescopic cylinder of the present invention; Figure 6 It is a partial three-dimensional structural schematic diagram of the position relationship between the crankshaft and the friction wheel of the present invention; Figure 7 It is a partial three-dimensional structural schematic diagram of the positional relationship between the ring gear and the internal gear of the present invention; Figure 8 It is a partial three-dimensional structural schematic diagram of the position relationship between the electromagnetic ball and the rotating handle of the present invention.

[0018] The numbers in the figure are: 1, voltage transformer body; 11, winding; 2, gap adjustment mechanism; 21, support block; 22, double-head plate; 23, external plate; 24, rotating block; 25, spring rod; 26, fixed long axis; 27, connecting block; 28, partition plate; 29, sliding rod; 210, driving shaft; 211, obstacle block; 3, damping friction mechanism; 31, telescopic cylinder; 32, rotating rod; 33, internal Rod; 34, short rod; 35, long rod; 36, buckle; 37, curved rod; 38, friction wheel; 39, fixed block; 310, vertical block; 4, magnetic leakage automatic control mechanism; 41, ring gear; 42, internal gear; 43, long plate; 44, fixed shaft; 45, turntable; 46, sleeve shaft; 47, external tube; 48, vertical rod; 49, eccentric shaft; 410, inner rod; 411, rotating handle; 412, electromagnetic ball. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention; Embodiments of the present invention A voltage transformer with self-eliminating electrical gap, reference Figure 1 As shown, it includes a voltage transformer body 1 of a rectangular frame structure, and both sides of the outer wall of the voltage transformer body 1 are wound with windings 11 for realizing primary voltage and secondary voltage conversion; In view of the above-mentioned voltage transformer with self-eliminating electrical gap, it can be specifically implemented as follows: A gap adjustment mechanism 2 is provided on the upper and lower sides of the inner wall of the voltage transformer body 1, a damping friction mechanism 3 is provided on the side of the voltage transformer body 1 close to the winding 11, and a leakage magnetic field automatic control mechanism 4 is provided on the front and rear sides of the inner wall of the voltage transformer body 1; refer to Figure 2 As shown, the gap adjustment mechanism 2 is used to optimize the electromagnetic performance of the winding 11 and improve the accuracy of the secondary output by adjusting the electrical gap; refer to Figure 2As shown, the gap adjustment mechanism 2 includes a support block 21 fixedly connected to the outer wall of one side of the voltage transformer body 1, and a double-headed plate 22 is fixedly connected to the surface of one end of the support block 21 away from the voltage transformer body 1, and a driving shaft 210 is fixedly connected to the central outer wall of the double-headed plate 22 away from the support block 21, and an external connecting plate 23 is fixedly connected to the surface of the double-headed plate 22 away from the driving shaft 210. Two external connecting plates 23 are symmetrically arranged around the center of the double-headed plate 22, and one end of the driving shaft 210 away from the double-headed plate 22 is fixedly connected to A rotating block 24, a spring rod 25 is fixedly connected to the outer wall of the rotating block 24 on one side away from the driving shaft 210, a fixed long axis 26 is fixedly connected to the inner wall of one end of the two external connecting plates 23 away from the double-headed plate 22, a connecting block 27 is rotatably connected to the outer wall of one end of the spring rod 25 away from the rotating block 24, a partition plate 28 is fixedly connected to the outer wall of the connecting block 27 on one side away from the spring rod 25, a sliding rod 29 is fixedly connected to one end of the connecting block 27 away from the spring rod 25, and an obstacle block 211 is fixedly connected to one side of the lower end of the partition plate 28; refer to Figure 3 As shown, the initial position of the support block 21 is located below the outer wall of the winding 11, the output end of the drive shaft 210 away from the double-headed plate 22 is externally connected to the reduction motor, and the initial position of the partition plate 28 is in the same vertical plane as the square opening opened in the center of the outer wall of the voltage transformer body 1; refer to Figure 4 As shown, the partition plate 28 is made of a wavy ceramic material, the sliding rod 29 is slidably connected to the outer wall of the fixed long shaft 26, and a convex portion is provided at one end of the obstacle block 211; Summary 1: Compared with the prior art where the electrical gap is too large or too small, resulting in reduced efficiency or damage, the present invention can dynamically adjust the electrical gap through the partition plate 28 that moves back and forth up and down, thereby optimizing the magnetic field distribution. The dynamic adjustment of the electrical gap can automatically adapt to the load fluctuation to ensure the stable operation of the equipment; by adjusting the gap, optimizing the magnetic flux distribution, reducing eddy current loss, the output voltage fluctuation can be effectively suppressed, and the partition plate 28 that moves back and forth up and down can quickly respond to the change of the electrical gap and provide flexible overvoltage protection. When a sudden overvoltage or short circuit occurs, the gap adjustment mechanism 2 can quickly increase the electrical gap and reduce the impact of current or voltage; the partition plate 28 that moves up and down can change the magnetic field path between the winding 11 and the core, effectively absorb and disperse the leakage magnetic field, and reduce the interference of the leakage magnetic field on the surrounding electrical equipment; the partition plate 28 that moves back and forth up and down has a certain buffering effect, which can absorb the vibration or mechanical shock generated by the equipment during operation and reduce the impact on the internal components of the equipment; the gap adjustment mechanism 2 helps to improve the airflow distribution inside the voltage transformer body 1 and optimize the heat dissipation performance. By adjusting the gap and absorbing heat, local overheating or equipment failure due to heat accumulation can be avoided. By physically adjusting the gap, heat concentration can be reduced, heat dissipation efficiency can be improved, and equipment temperature can be reduced.

[0020] refer to Figure 5 As shown, the damping friction mechanism 3 is used to reduce the stress accumulation of the voltage transformer body 1 caused by mechanical vibration and high-frequency electromagnetic interference; refer to Figure 6 As shown, the damping friction mechanism 3 includes a telescopic cylinder 31 fixedly connected to a square opening opened at the center of the outer wall of the voltage transformer body 1, a fixed block 39 is fixedly connected to the lower end of the telescopic cylinder 31, a rotating rod 32 is fixedly connected to the outer wall of the fixed block 39 on one side away from the telescopic cylinder 31, an inner connecting rod 33 is rotatably connected to the inner wall of the rotating rod 32 on one side away from the fixed block 39, a short rod 34 is rotatably connected to the inner wall of one end of the inner connecting rod 33 away from the rotating rod 32, a long rod 35 is rotatably connected to the outer wall of one end of the short rod 34 away from the inner connecting rod 33, a buckle 36 is fixedly connected to one end of the long rod 35 close to the short rod 34, a bent rod 37 is fixedly connected to the outer walls of both sides of the buckle 36 away from the short rod 34, a plurality of friction wheels 38 are fixedly connected to the outer wall of one end of the bent rod 37 away from the long rod 35, and a vertical block 310 is fixedly connected to one end of the long rod 35 away from the short rod 34; refer to Figure 5 As shown, a control switch is fixedly connected to the top of the telescopic cylinder 31. The initial position of the control switch fixedly connected to the top of the telescopic cylinder 31 is in the same vertical plane as the raised portion provided at the end of the obstacle block 211. The short rod 34 is rotatably connected to the deviated position of the center line of the outer wall of the long rod 35. refer to Figure 6 As shown, the outer walls at both ends of the bent rod 37 are in the shape of deflected arc surfaces, and a plurality of friction wheels 38 are evenly distributed along the outer walls at both ends of the deflected arc surfaces of the bent rod 37. The initial positions of the plurality of friction wheels 38 are attached to the outer wall of the winding 11, and the bottom surface of one end of the vertical block 310 away from the long rod 35 is fixedly connected to the surface of the square opening opened at the center of the outer wall of the voltage transformer body 1; Summary 2: Compared with the equipment performance degradation caused by the uneven magnetic field distribution in the prior art, the friction wheel 38 of the present invention rubs the electromagnetic wire, which can help eliminate the irregularity or instability in the magnetic field, smooth the distribution of magnetic lines of force, and adjust and optimize the distribution of the magnetic field through regular or dynamic friction, thereby reducing the efficiency loss and energy waste caused by the uneven local magnetic flux density; the friction mechanism can help to make the magnetic flux density uniform and reduce the leakage magnetic field phenomenon in the voltage transformer body 1; by rubbing the coil, the generation of electromagnetic eddy currents can be effectively reduced, and heat generation can be reduced, thereby improving the working efficiency of the equipment; friction can help eliminate any irregularity or stress that may occur in the electromagnetic wire during operation; the friction process may cause the transfer of part of the heat, helping to improve the thermal management of the voltage transformer body 1; by rubbing the electromagnetic wire, the electromagnetic noise and mechanical vibration caused by the irregular magnetic field can be reduced; the friction mechanism can effectively suppress the scattering or propagation of electromagnetic waves, reduce the impact of electromagnetic interference EMI on surrounding equipment, and by rubbing the electromagnetic wire, high-frequency noise and other unnecessary electromagnetic wave interference can be balanced and weakened, and the electromagnetic compatibility of the equipment can be improved; refer to Figure 7 As shown, the magnetic flux leakage automatic control mechanism 4 is used to adjust the magnetic field direction by rotating the electromagnet to weaken the high-order harmonic components in the power grid; refer to Figure 7 As shown, the magnetic flux leakage automatic control mechanism 4 includes a ring gear 41 fixedly connected to the outer wall of one side of the long rod 35, an inner gear 42 is provided on the side of the ring gear 41 away from the long rod 35, an end of the inner gear 42 away from the ring gear 41 is fixedly connected to a long plate 43, a fixed shaft 44 is fixedly connected to the center of the side of the inner gear 42 away from the ring gear 41, an end of the fixed shaft 44 away from the inner gear 42 is fixedly connected to a turntable 45, an outer wall of the fixed shaft 44 is sleeved with a sleeve shaft 46, and a side of the sleeve shaft 46 away from the fixed shaft 44 An external tube 47 is fixedly connected to the outer wall, and two external tubes 47 are symmetrically arranged with respect to the central axis of the sleeve shaft 46. A vertical rod 48 is fixedly connected to the outer wall of the two external tubes 47 at one end away from the sleeve shaft 46. An eccentric shaft 49 is fixedly connected to the eccentric part of the side of the rotating disk 45 away from the fixed shaft 44. An inner rod 410 is fixedly connected to the end of the eccentric shaft 49 away from the vertical rod 48. Both ends of the inner rod 410 are fixedly connected to rotating handles 411. Electromagnetic balls 412 are fixedly connected to the outer walls of the two rotating handles 411 at one side away from the inner rod 410. refer to Figure 8 As shown, the inner gear 42 is rotatably connected to the outer wall of the top end of the long plate 43, the inner gear 42 and the ring gear 41 mesh with each other and form a meshing transmission, and the bottom surface of one end of the long plate 43 away from the inner gear 42 is fixedly connected to the surface of the square opening opened at the center of the outer wall of the voltage transformer body 1; refer to Figure 8As shown, one end of the two rotating handles 411 away from the inner rod 410 is rotatably connected to the outer wall of the vertical rod 48, and the initial position of the electromagnetic ball 412 is at the point where the magnetic field and the current in the winding 11 interact; Summary 3: Compared with the serious harmonic pollution in the prior art power grid, the electromagnetic ball 412 of the present invention can dynamically adjust the magnetic field strength and direction, optimize the magnetic circuit distribution by rotating to absorb the leakage magnetic flux near the winding 11, reduce the leakage magnetic interference near the core and the winding 11, and reduce the eddy current loss, thereby improving the electromagnetic efficiency and accuracy of the voltage transformer body 1; the rotating electromagnetic ball 412 can adjust the magnetic flux density according to the actual operating state such as load changes, ensure that the core and the winding 11 always work in the optimal magnetization state, avoid oversaturation or insufficient magnetization of the magnetic circuit, and improve the stability and reliability of the equipment operation; by adjusting the direction of the magnetic field by rotating the electromagnetic ball 412, the high-order harmonic components in the power grid can be offset or weakened, and the influence of harmonics on the output signal of the voltage transformer body 1 can be reduced; when a short circuit or overvoltage occurs, the rotating electromagnetic ball 412 can quickly adjust its own magnetic field, absorb excess transient electromagnetic energy, and reduce the damage to the winding 11 and the insulation system caused by the impact; the rotating electromagnetic ball 412 can fine-tune the output voltage by controlling the electromagnetic absorption intensity to compensate for the output error caused by changes in ambient temperature or load.

[0021] The complete working principle and steps of the above embodiment are as follows: Initial definition: When the voltage transformer body 1 is connected to the power grid, the primary winding 11 receives a high voltage AC signal. At this time, the primary winding 11 generates an alternating magnetic field proportional to the input voltage. Since the voltage transformer body 1 uses an iron core material, the iron core plays a magnetic conductivity role and can effectively conduct alternating magnetic flux, thereby enhancing the strength of the magnetic field.

[0022] This alternating magnetic field is transmitted to the secondary winding 11 through the iron core. According to the law of electromagnetic induction, when the alternating magnetic field acts on the secondary winding 11, an induced voltage is generated in the secondary winding 11. Since the number of turns of the secondary winding 11 is less than that of the primary winding 11 when the voltage transformer body 1 is designed, the voltage induced in the secondary winding 11 is much lower than the voltage of the primary winding 11. At this time, the voltage signal of the secondary winding 11 is proportional to the input voltage of the primary winding 11, but the amplitude is greatly reduced, usually between a few volts and tens of volts.

[0023] The voltage signal output by the secondary winding 11 can be used by measuring instruments, protection devices or other electrical equipment. This output signal maintains a fixed proportional relationship with the voltage in the original power grid, and this proportional relationship depends on the turns ratio of the primary winding 11 and the secondary winding 11. In this way, the voltage transformer body 1 realizes the conversion of high voltage signals into low voltage signals, thereby providing users with a safe voltage measurement method.

[0024] During the operation of the voltage transformer body 1, factors such as the magnetic saturation and temperature rise of the core need special attention. In order to maintain the accuracy of the measurement, the core must not be over-saturated in the working state. In addition, the output voltage signal of the secondary winding 11 is very accurate and stable, so the voltage transformer body 1 can be used for voltage monitoring and protection in the power system for a long time and stably; When using: The gap adjustment mechanism 2 steps of optimizing the electromagnetic performance of the winding 11 and improving the accuracy of the secondary output by adjusting the electrical gap: like Figure 3 to Figure 4 As shown, when the primary winding 11 generates an alternating magnetic field proportional to the input voltage, the reduction motor connected to the output end of one end of the drive shaft 210 is started, and the start of the reduction motor will drive the drive shaft 210 to rotate, and then the rotating block 24 fixedly connected to one end of the drive shaft 210 away from the double-headed plate 22 will rotate, and the rotation of the rotating block 24 will drive the spring rod 25 fixedly connected to one end thereof to rotate, and when the spring rod 25 rotates to the right, it will pull the connecting block 27 rotatably connected to one end thereof to move downward, so that the fixed The sliding rod 29 connected to one side of the connecting block 27 will slide downward on the outer wall of the fixed long shaft 26, and then the partition plate 28 fixedly connected to the outer wall of the sliding rod 29 will move downward together with the downward movement of the sliding rod 29, so as to achieve uniform distribution of the load fluctuation generated in the alternating magnetic field. In addition, when the spring rod 25 rotates one circle, it will drive the sliding rod 29 moved to the outer wall of the bottom end of the fixed long shaft 26 to return to the initial position, so as to achieve the reciprocating movement of the partition plate 28 up and down inside the alternating magnetic field to reduce eddy current loss. The damping friction mechanism 3 steps for reducing the stress accumulation caused by mechanical vibration and high frequency electromagnetic interference of the voltage transformer body 1 are as follows: like Figures 5 and 6As shown, when the partition plate 28 moves downward together with the sliding rod 29, the obstacle block 211 fixedly connected to the outer wall at the bottom end of the partition plate 28 will touch the controller fixedly connected to the top end of the telescopic cylinder 31, and then the controller will drive one end of the telescopic cylinder 31 to extend downward, so that the fixed block 39 fixedly connected to one end of the telescopic cylinder 31 will drive the rotating rod 32 fixedly connected to its outer wall to move along with the movement of the telescopic cylinder 31, and the inner connecting rod 33 rotatably connected to the inner wall of the rotating rod 32 will deflect to the left side as the rotating rod 32 moves downward, so that the short rod 34 rotatably connected to the outer wall of one end of the inner connecting rod 33 will deflect to the left side as the inner connecting rod 33 deflects to the left side. When the short rod 34 deflects to the left, the deflection to the left of the short rod 34 will also pull the long rod 35 connected to the outer wall at one end thereof to deflect and rotate so that the right end thereof moves upward and tilts up. Therefore, the buckle 36 fixedly connected to one end of the long rod 35 will synchronously deflect and displace in the vertical direction as the right end of the long rod 35 tilts upward. The deflection and displacement of the buckle 36 will drive the curved rods 37 fixedly connected to the outer walls on both sides thereof to deflect and displace synchronously. Therefore, the friction wheels 38 evenly distributed on the outer walls at both ends of the deflected arc of the curved rod 37 will rub the inner wall of the winding 11 that is in contact with the initial position as the curved rod 37 deflects, thereby avoiding the risk of overheating or local overload of the winding 11. The leakage magnetic self-control mechanism is used to adjust the magnetic field direction by rotating the electromagnet to weaken the high-order harmonic components in the power grid. 4 steps: like Figures 7 and 8 As shown, when the long rod 35 moves upward and tilts, the ring gear 41 fixedly connected to the outer wall of one side of the long rod 35 will rotate together with the rotation of the long rod 35, and then the inner gear 42 meshing therewith will rotate together with the rotation of the ring gear 41, and the fixed shaft 44 fixedly connected at the center of one side of the inner gear 42 will rotate together with the rotation of the inner gear 42, so that the turntable 45 fixedly connected to the outer wall of one end of the fixed shaft 44 will rotate together with the rotation of the fixed shaft 44, so that the eccentric shaft 49 eccentrically fixedly connected to the outer wall of one side of the turntable 45 will rotate together with the rotation of the turntable 45, so that the rotation of the turntable 45 will pull the rotating handle 411 fixedly connected to the outer wall of one end thereof to realize left and right reciprocating deflection and swing on the outer wall of the vertical rod 48, so that the electromagnetic ball 412 fixedly connected to the outer wall of one side of the rotating handle 411 will reciprocate left and right deflection and swing together with the rotating handle 411, so that the electromagnetic ball 412 at the current interaction point will dynamically optimize the magnetic flux density.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A voltage transformer with a self-eliminating electrical gap, comprising a voltage transformer body (1) of a rectangular frame structure, both sides of the outer wall of the voltage transformer body (1) are wound with windings (11) for realizing primary voltage and secondary voltage conversion, and a square opening is opened at the center of the outer wall of the voltage transformer body (1), characterized in that: The inner wall of the voltage transformer body (1) is provided with a gap adjustment mechanism (2) on both upper and lower sides, the side of the voltage transformer body (1) close to the winding (11) is provided with a damping friction mechanism (3), and the inner wall of the voltage transformer body (1) is provided with a magnetic flux leakage automatic control mechanism (4) on both front and rear sides; The gap adjustment mechanism (2) is used to optimize the electromagnetic performance of the winding (11) and improve the accuracy of the secondary output by adjusting the electrical gap; The damping friction mechanism (3) is used to reduce stress accumulation caused by mechanical vibration and high-frequency electromagnetic interference in the voltage transformer body (1); The magnetic flux leakage automatic control mechanism (4) is used to adjust the direction of the magnetic field by rotating the electromagnet to weaken the high-order harmonic components in the power grid.

2. A voltage transformer with self-eliminating electrical gap according to claim 1, characterized in that: The gap adjustment mechanism (2) comprises a support block (21) fixedly connected to an outer wall of one side of a voltage transformer body (1); a double-headed plate (22) is fixedly connected to a surface of one end of the support block (21) away from the voltage transformer body (1); a driving shaft (210) is fixedly connected to a central outer wall of a side of the double-headed plate (22) away from the support block (21); an external connection plate (23) is fixedly connected to a surface of a side of the double-headed plate (22) away from the driving shaft (210); two external connection plates (23) are symmetrically arranged around the center of the double-headed plate (22); and a rotating block (23) is fixedly connected to an end of the driving shaft (210) away from the double-headed plate (22). 24), a spring rod (25) is fixedly connected to an outer wall of a side of the rotating block (24) away from the driving shaft (210), a fixed long axis (26) is fixedly connected to the inner wall of one end of the two external connection plates (23) away from the double-head plate (22), a connecting block (27) is rotatably connected to an outer wall of one end of the spring rod (25) away from the rotating block (24), a partition plate (28) is fixedly connected to an outer wall of a side of the connecting block (27) away from the spring rod (25), a sliding rod (29) is fixedly connected to one end of the connecting block (27) away from the spring rod (25), and an obstacle block (211) is fixedly connected to one side of the lower end of the partition plate (28).

3. A voltage transformer with self-eliminating electrical gap according to claim 2, characterized in that: The initial position of the support block (21) is located below the outer wall of the winding (11); the output end of the drive shaft (210) away from the double-headed plate (22) is externally connected to a reduction motor; and the initial position of the partition plate (28) is located in the same vertical plane as a square opening opened at the center of the outer wall of the voltage transformer body (1).

4. A voltage transformer with self-eliminating electrical gap according to claim 2, characterized in that: The partition plate (28) is made of a wavy ceramic material, the sliding rod (29) is slidably connected to the outer wall of the fixed long shaft (26), and a protruding portion is provided at one end of the obstacle block (211).

5. A voltage transformer with self-eliminating electrical gap according to claim 1, characterized in that: The damping friction mechanism (3) comprises a telescopic cylinder (31) fixedly connected to a square opening opened at the center of the outer wall of the voltage transformer body (1); the lower end of the telescopic cylinder (31) is fixedly connected to a fixed block (39); the outer wall of the fixed block (39) on a side away from the telescopic cylinder (31) is fixedly connected to a rotating rod (32); the inner wall of the rotating rod (32) on a side away from the fixed block (39) is rotatably connected to an inner connecting rod (33); the inner wall of the inner connecting rod (33) on one end away from the rotating rod (32) is rotatably connected to a A short rod (34), wherein the outer wall of one end of the short rod (34) away from the inner connecting rod (33) is rotatably connected to the long rod (35), one end of the long rod (35) close to the short rod (34) is fixedly connected to a buckle (36), both sides of the outer walls of the buckle (36) away from the short rod (34) are fixedly connected to curved rods (37), the outer wall of one end of the curved rod (37) away from the long rod (35) is fixedly connected to a plurality of friction wheels (38), and one end of the long rod (35) away from the short rod (34) is fixedly connected to a vertical block (310).

6. A voltage transformer with self-eliminating electrical gap according to claim 5, characterized in that: A control switch is fixedly connected to the top of the telescopic cylinder (31); the initial position of the control switch fixedly connected to the top of the telescopic cylinder (31) is in the same vertical plane as a raised portion provided at the end of the obstacle block (211); and the short rod (34) is rotatably connected to a position deviated from the center line of the outer wall of the long rod (35).

7. A voltage transformer with self-eliminating electrical gap according to claim 5, characterized in that: The outer walls at both ends of the curved rod (37) are in the shape of deflected arc surfaces, and the plurality of friction wheels (38) are evenly distributed along the outer walls at both ends of the deflected arc surfaces of the curved rod (37). The initial positions of the plurality of friction wheels (38) are in contact with the outer wall of the winding (11), and the bottom surface of one end of the vertical block (310) away from the long rod (35) is fixedly connected to the surface of a square opening opened at the center of the outer wall of the voltage transformer body (1).

8. A voltage transformer with self-eliminating electrical gap according to claim 5, characterized in that: The magnetic flux leakage automatic control mechanism (4) comprises a ring gear (41) fixedly connected to the outer wall of one side of the long rod (35); an inner gear (42) is provided on the side of the ring gear (41) away from the long rod (35); an end of the inner gear (42) away from the ring gear (41) is fixedly connected to a long plate (43); a fixed shaft (44) is fixedly connected at the center of the side of the inner gear (42) away from the ring gear (41); an end of the fixed shaft (44) away from the inner gear (42) is fixedly connected to a rotating disk (45); a sleeve shaft (46) is sleeved on the outer wall of the fixed shaft (44); and a sleeve shaft (46) is provided on one side of the sleeve shaft (46) away from the fixed shaft (44). An external tube (47) is fixedly connected to the side outer wall, and two external tubes (47) are symmetrically arranged about the central axis of the sleeve shaft (46); the outer walls of the two external tubes (47) at one end away from the sleeve shaft (46) are fixedly connected to a vertical rod (48); an eccentric shaft (49) is fixedly connected to an eccentric portion of a side of the rotating disk (45) away from the fixed shaft (44); an inner rod (410) is fixedly connected to one end of the eccentric shaft (49) away from the vertical rod (48); both ends of the inner rod (410) are fixedly connected to a rotating handle (411); and the outer walls of the two rotating handles (411) at one side away from the inner rod (410) are fixedly connected to an electromagnetic ball (412).

9. A voltage transformer with self-eliminating electrical gap according to claim 8, characterized in that: The inner gear (42) is rotatably connected to the outer wall of the top end of the long plate (43), the inner gear (42) and the ring gear (41) mesh with each other and form a meshing transmission, and the bottom surface of one end of the long plate (43) away from the inner gear (42) is fixedly connected to the surface of a square opening opened at the center of the outer wall of the voltage transformer body (1).

10. A voltage transformer with self-eliminating electrical gap according to claim 8, characterized in that: One end of the two rotating handles (411) away from the inner rod (410) is rotatably connected to the outer wall of the vertical rod (48), and the initial position of the electromagnetic ball (412) is at the point where the magnetic field and the current in the winding (11) interact.

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