An electromagnetic voltage transformer and a method for manufacturing the same

Abstract

The present invention provides an electromagnetic voltage transformer and a preparation method thereof, which relates to the technical field of voltage transformers, including a bottom plate, a shell installed on the bottom plate, three single-phase mutual inductor bodies arranged in the shell, the three single-phase mutual inductor bodies are arranged in a Y shape, the single-phase mutual inductor bodies include a primary winding, a secondary winding, an iron core and a shielding member, a mounting cover is arranged on the shell, a pot-type insulator is arranged in the mounting cover, the pot-type insulator is electrically connected to the primary winding on each single-phase mutual inductor body, a stabilizing mechanism is arranged in the center of the shell, the shell is also filled with SF6 insulating gas, and a cooling and cleaning mechanism is also arranged on the bottom plate. The present invention can effectively reduce the vibration caused by the voltage transformer during transportation by arranging the stabilizing mechanism, effectively improve the safety and stability, and is also provided with a cooling and cleaning mechanism, which can cool and clean the voltage transformer, and improve the operation stability of the transformer.

Description

Technical Field

[0001] The present invention relates to the technical field of voltage transformers, in particular to an electromagnetic voltage transformer and a preparation method thereof. Background Art

[0002] Voltage transformers are similar to transformers and are instruments used to transform the voltage on a line. However, the purpose of a transformer to transform voltage is to transmit electrical energy, so the capacity is very large and is generally calculated in kilovolt-amperes or megavolt-amperes.

[0003] At present, the voltage transformers commonly used in high-voltage power grids at home and abroad are mostly oil-immersed voltage transformers. When encountering vibrations or impacts, oil may leak out of the oil-immersed voltage transformer, which is easy to cause fire and has poor explosion-proof effect. In addition, when the voltage transformer is transported, it is easy to cause poor contact at the wiring joints when it is bumpy. In addition, the voltage transformer will generate high temperature during operation, which will increase the failure rate of the voltage transformer and also affect the service life of the voltage transformer. Summary of the invention

[0004] The present invention provides an electromagnetic voltage transformer and a preparation method thereof to solve at least one of the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention discloses an electromagnetic voltage transformer, including a base plate, a shell is installed on the base plate, three single-phase mutual inductor bodies are arranged in the shell, the three single-phase mutual inductor bodies are arranged in a Y shape, the single-phase mutual inductor bodies include a primary winding, a secondary winding, an iron core and a shielding member, a mounting cover is provided on the shell, a pot-type insulator is provided in the mounting cover, the pot-type insulator is electrically connected to the primary winding on each single-way mutual inductor body, a stabilizing mechanism is provided in the center of the shell, the shell is also filled with SF6 insulating gas, and a cooling and cleaning mechanism is also provided on the base plate.

[0006] Preferably, the stabilizing mechanism includes a triangular prism, which is installed at the central position of the lower inner wall of the shell. A number of stabilizing springs are fixedly provided on the three vertical surfaces of the triangular prism. The other end of the stabilizing spring on each vertical surface is fixedly connected to an abutment plate, which abuts against the single-phase mutual inductor body.

[0007] Preferably, an annular movable platform is installed on the base plate, which is rotatably connected to the base plate. A gear ring is also provided on the peripheral side of the annular movable platform. The base plate is also rotatably connected to a rotating rod, on which a gear is fixedly provided, which is meshingly connected to the gear ring. A motor is connected to the other end of the rotating rod, which is fixedly connected to the base plate. A cooling and cleaning mechanism is installed on the annular movable platform.

[0008] Preferably, the cooling and cleaning mechanism includes a box body, on which a driving motor is fixedly arranged, a lower output end of the driving motor is fixedly connected to a rotating rod, the rotating rod extends downward into the box body, a partition is arranged in the box body, the partition is fixedly connected to the inner wall of the box body, a reciprocating screw is fixedly arranged at the lower end of the rotating rod, a movable disk is threadedly connected to the reciprocating screw, a vertical plate is fixedly arranged on the movable disk, a cross bar and a cross tube are fixedly arranged at the other end of the vertical plate, a vertical groove is provided on one side wall of the box body close to the shell, the cross bar and the cross tube extend out of the box body from the vertical groove, a sealing gasket is provided in the vertical groove, and the cross bar and the cross tube are slidably connected to the vertical groove, a cleaning block is fixedly arranged on the cross bar, an adsorption box is provided at the other end of the cross tube, a negative pressure fan is also provided on the cross tube, and a plurality of adsorption heads are installed through the adsorption box.

[0009] Preferably, a hose is connected through the horizontal tube, and the other end of the hose is connected through the air box. The air box is rotatably connected to the rotating rod, which is set as a central control. A number of holes are provided on the rotating rod. A filter screen 1 is provided in the rotating rod, and an L-shaped pipe is symmetrically fixed on the rotating rod. A filter screen 2 is provided at the output end of the L-shaped pipe. A filter plate is detachably fixedly provided in the box, and a groove is provided in the center of the filter plate. The rotating rod passes downward through the groove, and air outlet pipes are symmetrically provided through the box.

[0010] Preferably, a slide groove 1 is provided on the inner wall of the upper side of the box body, a slider 1 is slidably connected in the slide groove 1, the rotating rod rotates through the slider 1, and a spring 1 is fixedly connected to the slider 1, and the other end of the spring 1 is fixedly connected to the slide groove 1;

[0011] The lower end of the rotating rod is rotatably connected with a slider 2, a slide groove 2 is provided on the partition plate, the slider 2 is slidably arranged in the slide groove 2, a spring 2 is fixedly connected to the slider 2, and the other end of the spring 2 is fixedly connected to the slide groove 2.

[0012] Preferably, a contact plate is fixedly provided on the inner wall of the box body away from the shell, a trapezoidal block is provided at the lower end of the contact plate, a connecting rod is fixedly provided at the end of the movable plate away from the vertical plate, a rotating wheel is installed on the connecting rod, and the rotating wheel contacts the contact plate and the trapezoidal block.

[0013] Preferably, pressing rods are symmetrically fixed on the movable disk, through grooves are symmetrically opened on the partition, a pressing plate is arranged on the lower side of the partition, the pressing plate is slidably arranged in the box body, a plurality of return springs are fixedly arranged at the lower end of the pressing plate, the other end of the return spring is fixedly connected to the lower inner wall of the box body, adding boxes are installed on both side walls of the box body, a pipe is installed through the side of the adding boxes close to each other, the other end of the pipe is connected to the box body, an output pipe is installed through the box body, the other end of the output pipe is connected to the injection box, and a plurality of injection heads are arranged on the injection box.

[0014] Preferably, a partition plate is fixedly provided on the upper inner wall of the adding box, a lifting plate is slidably provided on one side of the partition plate, a movable spring is fixedly provided on the lifting plate, the other end of the movable spring is fixedly connected to the upper inner wall of the adding box, an adding pipe is connected through the upper inner wall of the adding box, the other end of the adding pipe is connected through the fixed box, the fixed box is fixedly provided on the side wall of the box body, a one-way valve 1 is provided in the adding pipe, a liquid outlet pipe is also connected through the upper inner wall of the adding box, the other end of the liquid outlet pipe is connected through the output pipe, the connecting positions of the liquid outlet pipe and the output pipe are respectively located on both sides of the partition plate, and a one-way valve 2 is provided in the output pipe.

[0015] Preferably, a method for preparing an electromagnetic voltage transformer, used for preparing an electromagnetic voltage transformer as described above, comprises the following steps:

[0016] S1: A secondary winding is wound on the iron core, an insulating layer is provided on the secondary winding, a primary winding is sleeved on the insulating layer, and a shielding member is sleeved on the primary winding, thereby forming a single-phase inductor body;

[0017] S2: Install three single-phase mutual inductor bodies in a Y-shape in the housing, install the stabilizing mechanism in the center of the housing, install the cover, electrically connect the primary winding on each mutual inductor body with the pot-type insulator on the installation cover, and then fill the housing with SF6 gas;

[0018] S3: Install the housing on the bottom plate, and install the cooling and cleaning mechanism on the bottom plate.

[0019] Compared with the prior art, the present invention provides an electromagnetic voltage transformer and a preparation method thereof, which have the following beneficial effects: the present invention can effectively reduce the volume of the voltage transformer by arranging three single-phase inductor bodies in a Y shape, and the electromagnetic voltage transformer using SF6 gas as the insulating medium has the advantages of being oil-free, porcelain-free, flame-retardant, explosion-proof, and having high safety and reliability. In addition, a stabilizing mechanism is provided to effectively reduce the vibration caused by the voltage transformer during transportation, thereby effectively improving safety and stability. A cooling and cleaning mechanism is also provided to cool and clean the voltage transformer, thereby improving the service life of the voltage transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 A top view of the internal structure of the housing of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the stabilizing mechanism of the present invention;

[0024] Figure 4 For the present invention Figure 1 A top view of

[0025] Figure 5 It is a schematic structural diagram of the cooling and cleaning mechanism of the present invention;

[0026] Figure 6 It is a schematic diagram of the internal structure of the adding box of the present invention;

[0027] Figure 7 It is a schematic diagram of the installation of the spray box of the present invention;

[0028] Figure 8 It is a schematic structural diagram of the partition of the present invention;

[0029] Fig. 9 It is a schematic diagram of the installation of the mobile disk of the present invention;

[0030] Fig.10 It is a structural schematic diagram of the adsorption box of the present invention.

[0031] In the figure: 1, shell; 2, single-phase inductor body; 3, triangular column; 4, bottom plate; 5, abutment plate; 6, stabilizing spring; 7, mounting cover; 8, pot-type insulator; 9, annular moving platform; 10, gear; 11, rotating rod; 12, motor; 13, box; 14, driving motor; 15, rotating rod; 16, outlet pipe; 17, filter screen 1; 18, L-shaped pipe; 19, moving plate; 20, output pipe; 21, reset spring; 22, pressing plate; 23, slider 2; 24, partition; 25, pipe; 26, pressing rod; 27, reciprocating screw; 28, Filter 2; 29. ​​Air box; 30. Filter plate; 31. Adding box; 32. Partition plate; 33. Lifting plate; 34. Adding pipe; 35. Fixed box; 36. Liquid outlet pipe; 37. Moving spring; 38. Slide 1; 39. Slider 1; 40. Spring 1; 41. Spray box; 42. Spray head; 43. Adsorption head; 44. Spring 2; 45. Slide 2; 46. Through slot; 47. Contact plate; 48. Rotor; 49. Trapezoidal block; 50. Connecting rod; 51. Vertical plate; 52. Horizontal tube; 53. Horizontal rod; 54. Hose; 55. Cleaning block; 56. Adsorption box. DETAILED DESCRIPTION

[0032] 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.

[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Example 1

[0036] An embodiment of the present invention provides an electromagnetic voltage transformer, such as Figure 1-10 As shown, it includes a base plate 4, a shell 1 is installed on the base plate 4, three single-phase mutual inductor bodies 2 are arranged in the shell 1, the three single-phase mutual inductor bodies 2 are arranged in a Y shape, the single-phase mutual inductor body 2 includes a primary winding, a secondary winding, an iron core and a shielding member, a mounting cover 7 is arranged on the shell 1, a pot-type insulator 8 is arranged in the mounting cover 7, the pot-type insulator 8 is electrically connected to the primary winding on each single-phase mutual inductor body 2, a stabilizing mechanism is arranged in the center of the shell 1, the shell 1 is also filled with SF6 insulating gas, and a cooling and cleaning mechanism is also arranged on the base plate 4.

[0037] The working principle and beneficial effects of the above technical solution are as follows: three single-phase mutual inductor bodies 2 are installed in a Y-shape in the housing 1, a stabilizing mechanism is installed in the center of the housing 1, and the stabilizing mechanism is abutted against the three single-phase mutual inductor bodies 2, the primary winding on each single-phase mutual inductor body 2 is electrically connected to the pot-type insulator 8, and then the installation cover 7 is closed. At this time, the housing 1 is filled with SF6 insulating gas (the housing 1 is evacuated before filling with SF6 gas, or the air in the housing 1 is pushed out with SF6 gas), and then the housing 1 is installed on the bottom plate 4, and the cooling and cleaning mechanism is installed on the bottom plate 4 at the same time;

[0038] The three single-phase inductor bodies 2 are arranged in a Y shape, so that the volume of the voltage transformer can be effectively reduced. The electromagnetic voltage transformer using SF6 gas as the insulating medium has the advantages of being oil-free, porcelain-free, flame-retardant, explosion-proof, and having high safety and reliability. In addition, a stabilizing mechanism is provided to effectively reduce the vibration caused by the voltage transformer during transportation, thereby effectively improving safety and stability. A cooling and cleaning mechanism is also provided to cool and clean the voltage transformer, thereby improving the service life of the voltage transformer.

[0039] Example 2

[0040] On the basis of the above-mentioned embodiment 1, Figure 2-3 As shown, the stabilizing mechanism includes a triangular column 3, which is installed at the central position of the lower inner wall of the shell 1. A number of stabilizing springs 6 are fixedly provided on the three vertical surfaces of the triangular column 3. The other end of the stabilizing spring 6 on each vertical surface is fixedly connected to an abutment plate 5, and the abutment plate 5 abuts against the single-phase mutual inductor body 2.

[0041] The beneficial effect of the above technical solution is that when the shell 1 is vibrated during transportation, the stabilizing spring 6 can provide a supporting force to each one-way transformer body 2 through the abutment plate 5, thereby effectively avoiding abnormal movement of the one-way transformer body 2, and at the same time preventing each one-way transformer body 2 of the Y-shaped arrangement from colliding, resulting in damage to the one-way transformer body 2 or loose wiring, with high safety and strong practicality.

[0042] Example 3

[0043] On the basis of the above-mentioned embodiment 1, an annular movable platform 9 is installed on the base plate 4, and the annular movable platform 9 is rotatably connected to the base plate 4. A gear ring is also arranged on the peripheral side of the annular movable platform 9. A rotating rod 11 is also rotatably connected to the base plate 4. A gear 10 is fixedly arranged on the rotating rod 11, and the gear 10 is meshingly connected to the gear ring. A motor 12 is connected to the other end of the rotating rod 11, and the motor 12 is fixedly connected to the base plate 4. A cooling and cleaning mechanism is installed on the annular movable platform 9.

[0044] The working principle and beneficial effects of the above technical solution are as follows: after the electromagnetic one-way mutual inductor has been running for a period of time, the motor 12 is started, the motor 12 drives the rotating rod 11 to rotate, the rotating rod 11 drives the gear 10 to rotate, the gear 10 drives the gear ring to rotate, the gear ring drives the annular movable platform 9 to rotate, and the annular movable platform 9 drives the cooling and cleaning mechanism to rotate around the shell 1, thereby cooling and cleaning the shell 1. The structure is simple and practical.

[0045] Example 4

[0046] Based on the above embodiment 3, Figure 5-10 As shown, the cooling and cleaning mechanism includes a box body 13, a driving motor 14 is fixedly arranged on the box body 13, a rotating rod 15 is fixedly connected to the lower output end of the driving motor 14, the rotating rod 15 extends downward into the box body 13, a partition 24 is arranged in the box body 13, the partition 24 is fixedly connected to the inner wall of the box body 13, a reciprocating screw 27 is fixedly arranged at the lower end of the rotating rod 15, a moving disk 19 is threadedly connected to the reciprocating screw 27, a vertical plate 51 is fixedly arranged on the moving disk 19, and a vertical plate 51 is fixedly arranged on the vertical plate 51. A cross bar 53 and a cross tube 52 are fixedly provided at the other end of the plate 51. A vertical groove is provided on one side wall of the box body 13 close to the shell 1. The cross bar 53 and the cross tube 52 extend out of the box body 13 from the vertical groove. A sealing gasket is provided in the vertical groove, and the cross bar 53 and the cross tube 52 are slidably connected with the vertical groove. A cleaning block 55 is fixedly provided on the cross bar 53. An adsorption box 56 is provided at the other end of the cross tube 52. A negative pressure fan is also provided on the cross tube 52. A plurality of adsorption heads 43 are installed through the adsorption box 56.

[0047] Among them, preferably, a hose 54 is connected to the horizontal tube 52, and the other end of the hose 54 is connected to the air box 39. The air box 39 is rotatably connected to the rotating rod 15, and the rotating rod 15 is set as a central control. A plurality of holes are provided on the rotating rod 15. A filter screen 17 is provided in the rotating rod 15, and an L-shaped pipe 18 is symmetrically fixed on the rotating rod 15. A filter screen 28 is provided at the output end of the L-shaped pipe 18. A filter plate 30 is detachably fixed in the box body 13, and a groove is provided in the center of the filter plate 30. The rotating rod 15 passes through the groove downward, and an air outlet pipe 16 is symmetrically provided on the box body 13.

[0048] The working principle and beneficial effects of the above technical solution are as follows: the driving motor 14 is started, the driving motor 14 drives the rotating rod 15 to rotate, the rotating rod 15 drives the reciprocating screw 27 to rotate, the reciprocating screw 27 drives the moving plate 19 to move up and down, and when the moving plate 19 moves up and down, it drives the vertical plate 51 to move up and down, and the vertical plate 51 drives the cross bar 53 and the cross tube 52 to slide up and down in the vertical groove, and the cleaning block 55 reciprocates to wipe the outer wall of the shell 1, and the negative pressure fan is started. The adsorption head 43 on the adsorption box 56 adsorbs the wiped dust, and the dust and air will enter the hose 54 through the cross tube 52, and then enter the rotating rod 15, after being filtered by the filter screen 17, enter the L-shaped pipe 18, and then after being filtered by the filter screen 28, it is discharged into the box body 13. Since the rotating rod 15 is in the process of rotating, the discharge of the L-shaped pipe 18 is in a rotating state, and then it is discharged from the outlet pipe 16 after being filtered by the filter plate 30;

[0049] The dust on the shell 1 can be effectively cleaned by wiping with the cleaning block 55, and the dust can be adsorbed at the same time. The coordination is high by wiping and adsorbing at the same time. The air discharged after three filtrations has less dust, and the heat dissipation effect of the shell 1 after wiping is better. In addition, by the 18 rotary exhaust method, 30 can be effectively fully utilized, and the whole device has a high coordination degree and strong practicality.

[0050] Example 5

[0051] On the basis of the above-mentioned embodiment 4, Figure 5-10 As shown, a slide groove 38 is provided on the inner wall of the upper side of the box body 13, a slider 39 is slidably connected in the slide groove 38, the rotating rod 15 rotates through the slider 39, the driving motor 14 is fixedly arranged on the slider 39, and a spring 40 is fixedly connected to the slider 39, and the other end of the spring 40 is fixedly connected to the slide groove 38;

[0052] The lower end of the rotating rod 15 is rotatably connected to the slider 23, the partition plate 24 is provided with a slide groove 45, the slider 23 is slidably arranged in the slide groove 45, the slider 23 is fixedly connected to the spring 24, and the other end of the spring 24 is fixedly connected to the slide groove 45.

[0053] Among them, preferably, a contact plate 47 is fixedly provided on the inner wall of the box body 13 on the side away from the shell 1, a trapezoidal block 49 is provided at the lower end of the contact plate 47, and a connecting rod 50 is fixedly provided on the end of the movable plate 19 away from the vertical plate 51, and a rotating wheel 48 is installed on the connecting rod 50, and the rotating wheel 48 is in contact with the contact plate 47 and the trapezoidal block 49.

[0054] The working principle and beneficial effects of the above technical solution are as follows: when the movable disk 19 gradually moves downward, the movable disk 19 drives the connecting rod 50 to move downward, and the rotating wheel 48 on the connecting rod 50 will gradually contact the trapezoidal block 49, and the trapezoidal block 49 will make the connecting rod 50 move in the direction of the shell 1, and the connecting rod 50 drives the movable disk 19 to move, and the movable disk 19 drives the rotating rod 15 to move, and the rotating rod 15 drives the slider 2 and the slider 23 to slide in the slide groove 2 45, and the rotating rod 15 drives the slider 1 39 to slide in the slide groove 1 38, and the movable disk 19 drives the vertical plate 51 to move, and the vertical plate 51 drives the cross bar 53 and the cross tube 52 to move, and the cleaning block 55 on the cross bar 53 will contact the shell 1 (even if the cross tube 52 moves, the adsorption head 43 will not contact the shell 1), thereby squeezing and draining the cleaning block 55 (according to the description of Example 6, the cleaning block 55 will wipe the wet 1), so as to better complete the cleaning.

[0055] Example 6

[0056] On the basis of the above-mentioned embodiment 5, Figure 5-10 As shown, pressing rods 26 are symmetrically fixed on the movable disk 19, through grooves 46 are symmetrically opened on the partition 24, a pressing plate 22 is arranged on the lower side of the partition 24, the pressing plate 22 is slidably arranged in the box body 13, a plurality of return springs 21 are fixedly arranged on the lower end of the pressing plate 22, the other end of the return spring 21 is fixedly connected to the lower inner wall of the box body 13, an adding box 31 is installed on both side walls of the box body 13, a pipe 25 is installed through the side of the adding box 31 close to each other, the other end of the pipe 25 is connected to the box body 13, an output pipe 20 is installed through the box body 13, the other end of the output pipe 20 is connected to the injection box 41, and a plurality of injection heads 42 are arranged on the injection box 41.

[0057] Among them, preferably, a partition plate 32 is fixedly provided on the upper inner wall of the addition box 31, a lifting plate 33 is slidably provided on one side of the partition plate 32, a movable spring 37 is fixedly provided on the lifting plate 33, and the other end of the movable spring 37 is fixedly connected to the upper inner wall of the addition box 31, an addition pipe 34 is connected through the upper inner wall of the addition box 31, and the other end of the addition pipe 34 is connected through a fixed box 35, and the fixed box 35 is fixedly provided on the side wall of the box body 13, a one-way valve 1 is provided in the addition pipe 34, and a liquid outlet pipe 36 is also connected through the upper inner wall of the addition box 31, and the other end of the liquid outlet pipe 36 is connected through the output pipe 20, and the connecting positions of the liquid outlet pipe 36 and the output pipe 20 are respectively located on both sides of the partition plate 32, and a one-way valve 2 is provided in the output pipe 20.

[0058] The working principle and beneficial effects of the above technical solution are as follows: when the movable disc 19 descends, the movable disc 19 drives the pressing rod 26 to descend, and the pressing rod 26 passes through the through slot 46 and moves downward, and the pressing rod 26 contacts the pressing plate 22, thereby driving the pressing plate 22 to descend, and the descent of the pressing plate 22 will squeeze the water under the pressing plate 22 into 31 through the pipe 25, and as the pressing plate 22 continues to move downward, the water in the adding box 31 will enter the injection box 41 through the output pipe 20, and then be injected onto the shell 1 from the plurality of injection heads 42, and during the injection process, the cleaning block 55 will still clean the shell 1; when water enters the adding box When the moving plate 19 is in the water, the water will squeeze the lifting plate 33 and compress the moving spring 37; when the moving plate 19 rises, the pressing plate 22 will be reset under the action of the reset springs 21, thereby generating negative pressure under the pressing plate 22, and the lifting plate 33 will descend under the action of the negative pressure, then the detergent in the fixed box 35 will enter the upper part of the lifting plate 33 through the adding 34, and then with the next downward squeezing of the pressing plate 22 and the rise of the lifting plate 33, the detergent will enter the output pipe 20 through the liquid outlet pipe 36, and then be discharged from the injection head 42 (it is only necessary to intermittently add detergent to the fixed box 35 and add water to the lower part of the pressing plate 22);

[0059] At this time, as the cleaning block 55 is wiped, the outer shell of the shell 1 will gradually become clean, and the evaporation of water will also absorb heat, which can effectively cool down the shell 1; (wherein, an inclined water pipe is arranged on the horizontal tube 52, and absorbent cotton is arranged in the water pipe. Part of the water sucked from the adsorption box 56 will flow out through the water pipe, and the hose 54 is upward, and only a small amount of water will enter the rotating rod 15). The above structure completes the up and down movement and wiping of the cleaning block 55, the up and down movement and adsorption of the adsorption box 56, and the squeezing and spraying of water by the pressing plate 22 through a driving motor 14, and also completes the squeezing and drainage function of the cleaning block 55. The structure has a high degree of coordination and strong practicality, and can effectively clean and cool down the shell 1.

[0060] Example 7

[0061] A method for preparing an electromagnetic voltage transformer, used for preparing an electromagnetic voltage transformer as described in Example 1, comprises the following steps:

[0062] S1: Winding a secondary winding on the iron core, setting an insulating layer on the secondary winding, then sleeve a primary winding on the insulating layer, and sleeve a shielding member on the primary winding, thereby forming a single-phase inductor body 2;

[0063] S2: Install three single-phase mutual inductor bodies 2 in a Y-shape in the housing 1, install the stabilizing mechanism in the center of the housing 1, cover the installation cover 7, electrically connect the primary winding on each mutual inductor body 2 with the pot-type insulator 8 on the installation cover 7, and then fill the housing 1 with SF6 gas;

[0064] S3: Install the shell 1 on the bottom plate 4, and install the cooling and cleaning mechanism on the bottom plate 4 at the same time.

[0065] The three single-phase mutual inductor bodies 2 can be arranged in a Y shape or a triangle shape according to the spatial position of the housing.

[0066] The high-voltage end of the primary winding is firmly and reliably connected to the high-voltage conductor of the disc insulator 8 by bolts using a spring wire, and an aluminum bent pipe is provided outside the spring wire for electrical shielding.

[0067] Adopt U-shaped iron core to reduce loss and improve accuracy.

[0068] According to the double busbar GIS structure, the shell can also be designed as a D-type structure to shorten the distance between the double busbars.

[0069] The working principle and beneficial effects of the above technical solution are as follows: In the first step, a secondary winding is wound on the iron core, an insulating layer is provided on the secondary winding, and then a primary winding is sleeved on the insulating layer, and a shielding member is sleeved on the primary winding, thereby forming a single-phase inductor body 2;

[0070] The second step is to install three single-phase mutual inductor bodies 2 in a Y-shape in the housing 1, and at the same time install the stabilizing mechanism in the center of the housing 1, cover the installation cover 7, and electrically connect the primary winding on each mutual inductor body 2 with the pot-type insulator 8 on the installation cover 7, and then fill the housing 1 with SF6 gas; (before filling the SF6 gas, evacuate the housing 1, or use SF6 gas to push out the air in the housing 1)

[0071] The third step is to install the shell 1 on the bottom plate 4 and install the cooling and cleaning mechanism on the bottom plate 4 at the same time.

[0072] The electromagnetic voltage transformer using SF6 gas as the insulating medium has the advantages of being oil-free, porcelain-free, flame-retardant, explosion-proof, and highly safe and reliable. In addition, a stabilizing mechanism is provided to effectively reduce the vibration damage caused to the voltage transformer during transportation, thereby effectively improving safety and stability. A cooling and cleaning mechanism is also provided to cool and clean the voltage transformer, thereby increasing the service life of the voltage transformer.

[0073] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An electromagnetic voltage transformer, characterized in that: The invention comprises a base plate (4), a shell (1) is mounted on the base plate (4), three single-phase mutual inductor bodies (2) are arranged in the shell (1), the three single-phase mutual inductor bodies (2) are arranged in a Y shape, the single-phase mutual inductor bodies (2) comprise a primary winding, a secondary winding, an iron core and a shielding member, a mounting cover (7) is arranged on the shell (1), a pot-type insulator (8) is arranged in the mounting cover (7), the pot-type insulator (8) is electrically connected to the primary winding on each single-phase mutual inductor body (2), a stabilizing mechanism is arranged in the center of the shell (1), the shell (1) is also filled with SF6 insulating gas, and a cooling and cleaning mechanism is also arranged on the base plate (4); An annular movable platform (9) is mounted on the bottom plate (4), the annular movable platform (9) is rotatably connected to the bottom plate (4), a gear ring is also arranged on the circumference of the annular movable platform (9), a rotating rod (11) is also rotatably connected to the bottom plate (4), a gear (10) is fixedly arranged on the rotating rod (11), the gear (10) is meshingly connected to the gear ring, a motor (12) is connected to the other end of the rotating rod (11), the motor (12) is fixedly connected to the bottom plate (4), and a cooling and cleaning mechanism is mounted on the annular movable platform (9); The cooling and cleaning mechanism comprises a box body (13), a driving motor (14) is fixedly arranged on the box body (13), a rotating rod (15) is fixedly connected to the lower output end of the driving motor (14), the rotating rod (15) extends downward into the box body (13), a partition (24) is arranged in the box body (13), the partition (24) is fixedly connected to the inner wall of the box body (13), a reciprocating screw (27) is fixedly arranged at the lower end of the rotating rod (15), a moving disk (19) is threadedly connected to the reciprocating screw (27), a vertical plate (51) is fixedly arranged on the moving disk (19), and the vertical plate (51) is fixedly arranged on the moving disk (19). A cross bar (53) and a cross tube (52) are fixedly arranged at the other end of the housing (13), a vertical slot is provided on a side wall of the housing (13) close to the shell (1), the cross bar (53) and the cross tube (52) extend out of the housing (13) from the vertical slot, a sealing gasket is arranged in the vertical slot, and the cross bar (53) and the cross tube (52) are slidably connected to the vertical slot, a cleaning block (55) is fixedly arranged on the cross bar (53), an adsorption box (56) is arranged at the other end of the cross tube (52), a negative pressure fan is also arranged on the cross tube (52), and a plurality of adsorption heads (43) are installed through the adsorption box (56).

2. The electromagnetic voltage transformer according to claim 1, characterized in that: The stabilizing mechanism comprises a triangular column (3), which is mounted at the central position of the lower inner wall of the housing (1), and a plurality of stabilizing springs (6) are fixedly arranged on three vertical surfaces of the triangular column (3), and the other end of the stabilizing spring (6) on each vertical surface is fixedly connected to an abutment plate (5), and the abutment plate (5) abuts against the single-phase mutual inductor body (2).

3. The electromagnetic voltage transformer according to claim 1, characterized in that: A hose (54) is connected through the transverse tube (52), and the other end of the hose (54) is connected through the air box (29). The air box (29) is rotatably connected to the rotating rod (15). The rotating rod (15) is set as a central control. A plurality of holes are provided on the rotating rod (15). A filter screen 1 (17) is provided inside the rotating rod (15). An L-shaped pipe (18) is symmetrically fixedly provided on the rotating rod (15). A filter screen 2 (28) is provided at the output end of the L-shaped pipe (18). A filter plate (30) is detachably fixedly provided inside the box body (13). A groove is provided in the center of the filter plate (30). The rotating rod (15) passes through the groove downward. An air outlet pipe (16) is symmetrically provided through the box body (13).

4. The electromagnetic voltage transformer according to claim 1, characterized in that: A slide groove (38) is provided on the inner wall of the upper side of the box body (13), a slider (39) is slidably connected in the slide groove (38), the rotating rod (15) rotates through the slider (39), a driving motor (14) is fixedly arranged on the slider (39), and a spring (40) is fixedly connected to the slider (39), and the other end of the spring (40) is fixedly connected to the slide groove (38); The lower end of the rotating rod (15) is rotatably connected to a second slide block (23), a second slide groove (45) is provided on the partition plate (24), the second slide block (23) is slidably arranged in the second slide groove (45), the second slide block (23) is fixedly connected to a second spring (44), and the other end of the second spring (44) is fixedly connected to the second slide groove (45).

5. The electromagnetic voltage transformer according to claim 4, characterized in that: A contact plate (47) is fixedly provided on the inner wall of the box body (13) at one side away from the shell body (1), a trapezoidal block (49) is provided at the lower end of the contact plate (47), a connecting rod (50) is fixedly provided at one end of the movable plate (19) away from the vertical plate (51), a rotating wheel (48) is mounted on the connecting rod (50), and the rotating wheel (48) is in contact with the contact plate (47) and the trapezoidal block (49).

6. The electromagnetic voltage transformer according to claim 1, characterized in that: A pressing rod (26) is symmetrically fixedly arranged on the movable plate (19), a through groove (46) is symmetrically opened on the partition (24), a pressing plate (22) is arranged on the lower side of the partition (24), the pressing plate (22) is slidably arranged in the box body (13), a plurality of return springs (21) are fixedly arranged on the lower end of the pressing plate (22), the other end of the return spring (21) is fixedly connected to the lower inner wall of the box body (13), an adding box (31) is installed on both side walls of the box body (13), a pipe (25) is installed through the side of the adding box (31) close to each other, the other end of the pipe (25) is connected to the box body (13), an output pipe (20) is installed through the box body (13), the other end of the output pipe (20) is connected to the injection box (41), and a plurality of injection heads (42) are arranged on the injection box (41).

7. The electromagnetic voltage transformer according to claim 6, characterized in that: A partition plate (32) is fixedly arranged on the upper inner wall of the adding box (31), a lifting plate (33) is slidably arranged on one side of the partition plate (32), a moving spring (37) is fixedly arranged on the lifting plate (33), the other end of the moving spring (37) is fixedly connected to the upper inner wall of the adding box (31), an adding pipe (34) is connected through the upper inner wall of the adding box (31), the other end of the adding pipe (34) is connected through a fixed box (35), the fixed box (35) is fixedly arranged on the side wall of the box body (13), a one-way valve (1) is arranged in the adding pipe (34), a liquid outlet pipe (36) is also connected through the upper inner wall of the adding box (31), the other end of the liquid outlet pipe (36) is connected through the output pipe (20), the through positions of the liquid outlet pipe (36) and the output pipe (20) are respectively located on both sides of the partition plate (32), and a one-way valve (2) is arranged in the output pipe (20).

8. A method for preparing an electromagnetic voltage transformer, used for preparing an electromagnetic voltage transformer as claimed in claim 1, characterized in that: The following steps are involved: S1: Winding a secondary winding on an iron core, arranging an insulating layer on the secondary winding, then sleeve a primary winding on the insulating layer, and sleeve a shielding member on the primary winding, thereby forming a single-phase inductor body (2); S2: three single-phase mutual inductor bodies (2) are installed in a Y-shape in a housing (1), a stabilizing mechanism is installed in the center of the housing (1), a mounting cover (7) is installed, a primary winding on each mutual inductor body (2) is electrically connected to a pot-type insulator (8) on the mounting cover (7), and then SF6 gas is filled into the housing (1); S3: Install the housing (1) on the base plate (4), and simultaneously install the cooling and cleaning mechanism on the base plate (4).

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