10-35kV deicing metering current and voltage transformer

Abstract

The invention relates to the technical field of mutual inductors, in particular to a 10-35 kV deicing type metering current and voltage mutual inductor which comprises a mechanism box, two insulating sleeves symmetrically fixed to the top end of the mechanism box and a fixing base fixed to the bottom of the mechanism box. A deicing assembly structure is innovatively integrated in the inductor manufacturing link, so that when the transformer is used outdoors, automatic and efficient deicing of an insulating sleeve umbrella skirt can be achieved, manual operation is not needed, a driving motor drives a rotating gear ring to rotate, a limiting cylinder synchronously rotates along with the rotating gear ring, and therefore the transformer can be used outdoors. The cutting block outside the positioning cylinder can cut and strip the ice layer on the surface of the umbrella skirt in the rotating process, and meanwhile, the second piston rod drives the ejector pin to stretch out and draw back in a reciprocating mode along the positioning cylinder and stretch into the gap of the umbrella skirt to knock, so that accumulated ice remaining in the gap is effectively removed, and the ice layer cleaning comprehensiveness is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mutual inductors, in particular to a 10-35kV deicing type measurement current and voltage mutual inductor. BACKGROUND

[0002] In the field of power system inductor manufacturing, 10-35kV measurement current and voltage mutual inductors are key equipment for power measurement in distribution networks, and their structural design and manufacturing process directly affect the operational stability. Such mutual inductors are mostly of a combined structure and integrate current and voltage conversion functions.

[0003] A 10-35kV measurement mutual inductor used outdoors has a shed structure at the top end of the insulating sleeve to meet the creepage distance requirement, and is designed with gaps and wrinkles. In low-temperature, rainy, and foggy weather conditions, these gaps are prone to become ice disaster areas. When the ambient temperature drops below 0℃, water droplets or water vapor in the air enter the gaps and freeze rapidly due to limited convection, forming hard ice shells or loose ice crystals. Ice formation not only leads to degradation of insulation performance, causing partial discharge or even breakdown accidents, but also may cause stress due to volume expansion, resulting in shed cracks or sleeve deformation, affecting measurement accuracy. Currently, such icing cannot be automatically removed by the mutual inductor and needs to rely on regular manual inspection and deicing. Maintenance personnel need to use climbing tools to reach the top of the equipment and use scrapers or hot water to clean up. The cleaning efficiency is low, and high-altitude operations in rainy and snowy weather pose a falling risk, resulting in low overall safety. In addition, manual deicing has a lag, and if not handled in time, may cause measurement errors or equipment downtime, affecting the economic operation and power supply reliability of the power grid. SUMMARY

[0004] The present application aims to provide a 10-35kV deicing type measurement current and voltage mutual inductor to solve the problem of existing mutual inductors not having the function of actively cleaning and deicing when used outdoors, relying on regular manual inspection and deicing, low cleaning efficiency, high-altitude operations in rainy and snowy weather posing a falling risk, low overall safety, and manual deicing having a lag, which may cause measurement errors or equipment downtime if not handled in time, affecting the economic operation and power supply reliability of the power grid.

[0005] To achieve the above object, the present application provides the following technical scheme: a 10-35kV deicing type metering current and voltage transformer, comprising a mechanism box, two insulation sleeves symmetrically fixed at the top end of the mechanism box, and a fixed seat fixed at the bottom of the mechanism box, arc-shaped limiting covers are fixedly installed outside the four corners of the mechanism box, a lifting ring is fixedly installed at the top end of each arc-shaped limiting cover, arc-shaped intercepting copper plates are arranged between every two arc-shaped limiting covers, a deicing assembly is arranged outside the top end of the mechanism box, an installation cavity is formed in the bottom end of the mechanism box, and an intercepting driving assembly is arranged in the installation cavity; the deicing assembly comprises a driving motor, two rotating tooth rings and two limiting cylinders, the driving motor is fixed at the middle of the top end of the mechanism box, the two rotating tooth rings are penetrated and sleeved outside the bottom end of the two insulation sleeves, and the two limiting cylinders are penetrated and fixedly installed at the top end of the side edge of the two rotating tooth rings.

[0006] Further, a driving gear is fixedly installed at the top end of the driving motor, one side of each of the two rotating tooth rings is meshed and connected with one side of the driving gear, and an annular limiting seat is rotatably installed at the bottom end of each of the two rotating tooth rings.

[0007] Further, a plurality of positioning cylinders are equidistantly penetrated and installed at the side of each limiting cylinder close to the gap between the insulation sleeve umbrella skirt, a first piston rod is slidingly and sealingly installed at the bottom end of each limiting cylinder, a spherical block is fixedly installed at the bottom end of the first piston rod, a compression spring is sleeved at the bottom end of the side of the first piston rod, and the two ends of the compression spring are fixedly installed at the rotating tooth ring and the side of the spherical block.

[0008] Further, a second piston rod is penetratingly and slidingly sealingly installed at the inside of the side of each positioning cylinder away from the limiting cylinder, a thimble is fixedly installed at the end of the second piston rod away from the limiting cylinder, and a plurality of cutting blocks are fixedly installed at the outside of the plurality of positioning cylinders.

[0009] Further, a plurality of extrusion blocks are equiangularly and circumferentially arranged at the bottom end of the side of each rotating tooth ring close to the spherical block, the bottom end of each extrusion block is fixedly installed at the outside of the top end of the mechanism box, and the two sides of each extrusion block are arranged in a circular arc shape.

[0010] Further, the intercepting driving assembly comprises a first rotating shaft, a second rotating shaft, a third rotating shaft, a fourth rotating shaft and a stepping motor, the first rotating shaft, the second rotating shaft, the third rotating shaft and the fourth rotating shaft are rotatably installed on the four inner walls of the installation cavity through supports, the stepping motor is fixedly installed on the side inner wall of the installation cavity, and the output end of the stepping motor is coaxially fixed with one end of the first rotating shaft.

[0011] Further, a bevel gear set is arranged in transmission connection between the end of the first rotating shaft away from the stepper motor and the end of the second rotating shaft, and between the other end of the third rotating shaft and the end of the fourth rotating shaft.

[0012] Further, a guide slot is arranged in the interior of each side of the installation cavity close to each intercepting copper plate, and each intercepting copper plate is arranged in the interior of one side of the installation cavity through the guide slot, and each intercepting copper plate is fixedly installed with an arc-shaped rack on the exterior of one side, and the first rotating shaft, the second rotating shaft, the third rotating shaft and the fourth rotating shaft are fixedly installed with a limiting gear on the exterior of one side close to the arc-shaped rack, and the limiting gear is in meshing connection with one side of the arc-shaped rack.

[0013] Further, a drainage groove is arranged in the interior of one side of each intercepting copper plate, and the mechanism box is provided with a flow guide pipe, and the input end of the flow guide pipe is fixedly installed in the interior of the bottom end of the installation cavity, and each intercepting copper plate is fixedly installed with a sealing plate on the exterior of the end away from the drainage groove.

[0014] Further, each intercepting copper plate is fixedly installed with an electric heating plate on the exterior of the top end, and each intercepting copper plate is fixedly installed with a conduction block on the exterior of the side edge away from the sealing plate, and the conduction block is in conduction connection with a wire, and the output end of the wire is in conduction connection with the input end of the electric heating plate, and the installation cavity is fixedly installed with a connecting block on the interior of one side close to the conduction block.

[0015] Compared with the prior art, the present application has the following advantages: 1、The present application innovatively integrates the deicing assembly structure in the inductor manufacturing link, so that the mutual inductor can realize self-efficient deicing of the insulating sleeve umbrella skirt when used outdoors without relying on manual operation, the driving motor drives the rotating gear ring to rotate, the limiting cylinder rotates synchronously, the cutting block on the exterior of the positioning cylinder can cut and peel the ice layer on the surface of the umbrella skirt in the rotating process, the second piston rod drives the ejector pin to reciprocate along the positioning cylinder, and the ejector pin is inserted into the gap of the umbrella skirt to knock, effectively removing the accumulated ice in the gap, ensuring the comprehensiveness of ice layer cleaning, solving the hysteresis and safety hazards of manual deicing, and fully removing the ice in the surface and gap, ensuring the stability of the insulating performance of the insulating sleeve, reducing the faults such as partial discharge and component cracking caused by icing, ensuring the measurement accuracy, significantly improving the operation reliability and service life of the mutual inductor in the low-temperature rain and snow environment, and filling the gap of active deicing design of outdoor mutual inductor in the inductor manufacturing field. 2、When the deicing assembly is in operation, the stepping motor drives the arc-shaped rack through the first rotating shaft, the second rotating shaft and other transmission structures, and drives the intercepting copper plate to extend along the guide groove in synchronization with the arc-shaped limiting cover through the bevel gear set and the limiting gear, so that the intercepting copper plate is in butt joint with the arc-shaped limiting cover to form a closed intercepting cover, fully surrounds the area below the insulating sleeve, can effectively receive the ice blocks knocked by the deicing assembly, prevents the falling of the ice blocks to the ground to cause safety hazards, especially avoids the accidental injury of the falling ice blocks to the personnel or equipment below during the outdoor high-altitude operation, meanwhile, the electric heating plate at the top end of the intercepting copper plate is quickly started through the cooperation of the on-block and the on-block, melts the collected ice blocks, and the melted water is collected to the installation cavity through the drainage groove, and then is discharged in a directional manner through the flow guide pipe, so that the accumulated water is prevented from being re-iced in the intercepting structure, the whole process of the automatic processing of the ice block collection, melting and discharge is realized, the falling ice blocks do not need manual cleaning, the safety of the deicing operation is improved, and the interference of environmental factors on the equipment operation is reduced, and the stable operation of the mutual inductor in the outdoor complex environment is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the partial cross-sectional structure of the intercepting copper plate extending from the mechanism box; Figure 3 It is a schematic diagram of the partial cross-sectional structure of the insulating sleeve and the limiting cylinder; Figure 4 It is Figure 3 It is an enlarged structure schematic diagram of A in the middle; Figure 5 It is a schematic diagram of the structure of the mechanism box and the extrusion block; Figure 6 It is a top view structure schematic diagram of the positioning cylinder and the cutting block; Figure 7 It is a schematic diagram of the structure of the stepping motor and the first rotating shaft; Figure 8 It is a top view structure schematic diagram of the arc-shaped limiting cover and the intercepting copper plate; Figure 9 It is a schematic diagram of the partial cross-sectional structure of the intercepting copper plate and the electric heating plate; Figure 10 It is a schematic diagram of the structure of the on-block and the on-block; Figure 11 It is a schematic diagram of the rotation of the limiting gear to drive the intercepting copper plate to extend; Figure 12 It is a schematic diagram of the rotation of the limiting gear to drive the intercepting copper plate to retract.

[0017] The components represented by the numbers in the drawings are listed as follows: 1, mechanism box; 2, insulating sleeve; 3, fixed seat; 4, arc-shaped limiting cover; 5, lifting ring; 6, intercepting copper plate; 7, driving motor; 8, driving gear; 9, limiting seat; 10, rotating gear ring; 11, limiting cylinder; 12, positioning cylinder; 13, first piston rod; 14, spherical block; 15, compression spring; 16, second piston rod; 17, thimble; 18, extrusion block; 19, cutting block; 20, mounting cavity; 21, first rotating shaft; 22, second rotating shaft; 23, third rotating shaft; 24, fourth rotating shaft; 25, stepping motor; 26, bevel gear set; 27, limiting gear; 28, guide groove; 29, arc-shaped rack; 30, drainage groove; 31, flow guide pipe; 32, electric heating plate; 33, on-off block; 34, on-off block; 35, wire; 36, sealing plate. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0019] Embodiment one: please refer to Figure 1 Figure 6 A 10-35kV deicing type metering current and voltage transformer, comprising a mechanism box 1, two insulating sleeves 2 symmetrically fixed at the top end of the mechanism box 1 and a fixed seat 3 fixed at the bottom of the mechanism box 1, arc-shaped limiting covers 4 are fixedly installed outside the four corners of the mechanism box 1, lifting rings 5 are fixedly installed at the top end of the arc-shaped limiting covers 4, and a deicing assembly is arranged outside the top end of the mechanism box 1; the deicing assembly comprises a driving motor 7, two rotating gear rings 10 and two limiting cylinders 11, the driving motor 7 is fixed at the middle of the top end of the mechanism box 1, the two rotating gear rings 10 are through-set outside the two insulating sleeves 2 near the bottom end, and the two limiting cylinders 11 are through-fixedly installed outside the top end of the two rotating gear rings 10 at the side edges.

[0020] Specifically, the arc-shaped limiting covers 4 at the four corners are arranged so that the whole can protect the main body during use, and the maintenance workers can place maintenance tools during maintenance.

[0021] A driving gear 8 is fixedly installed at the top end of the driving motor 7, one side of each of the two rotating gear rings 10 is meshingly connected with one side of the driving gear 8, and annular limiting seats 9 are rotatably installed at the bottom end of the two rotating gear rings 10, and the bottom end of the limiting seat 9 is fixedly installed outside the top end of the mechanism box 1.

[0022] ​A plurality of positioning cylinders 12 are arranged at equal intervals on one side of each limiting cylinder 11 close to the gap of the umbrella skirt of the insulating sleeve 2, a first piston rod 13 is slidingly and sealingly arranged in the bottom end of each limiting cylinder 11, a spherical block 14 is fixedly arranged at the bottom end of the first piston rod 13, a compression spring 15 is arranged outside the bottom end of the first piston rod 13, and the two ends of the compression spring 15 are fixedly arranged on the rotating tooth ring 10 and one side of the spherical block 14 respectively.

[0023] A second piston rod 16 is slidingly and sealingly arranged in the inside of each positioning cylinder 12 away from the limiting cylinder 11, a thimble 17 is fixedly arranged at the end of the second piston rod 16 away from the limiting cylinder 11, and a plurality of cutting blocks 19 are fixedly arranged outside the plurality of positioning cylinders 12.

[0024] A plurality of extrusion blocks 18 are arranged at equal angles around the bottom end of each rotating tooth ring 10 close to the spherical block 14, the bottom end of each extrusion block 18 is fixedly arranged outside the top end of the mechanism box 1, and the two sides of each extrusion block 18 are arranged in a circular arc shape.

[0025] In this embodiment, the mutual inductor is completed by modular assembly during the inductor manufacturing stage: the mechanism box 1 is the core bearing component, the two insulating sleeves 2 fixed symmetrically on the top end correspond to the high-voltage insulation requirements of current and voltage measurement, the umbrella skirt structure on the surface of the insulating sleeve 2 naturally forms a gap and a wrinkle, the arc-shaped limiting cover 4 at the four corners of the mechanism box 1 is fixed by bolts, the top end lifting ring 5 is used for lifting operation during installation or maintenance, and the copper plate 6 is generally in a retracted state (stored in the installation cavity 20 at the bottom of the mechanism box 1).

[0026] When outdoor environments experience low temperatures, rain, freezing fog, or other adverse weather conditions, ice forms in the gaps of the insulating sleeve 2 due to water vapor retention. The de-icing component operates according to a pre-set program (this control logic is pre-set in the control system during the inductor manufacturing and debugging phase): First, after the drive motor 7 is powered on, it drives the top drive gear 8 to rotate. Since the drive gear 8 meshes with the two rotating gear rings 10, and the rotating gear rings 10 are rotatably connected to the top of the mechanism box 1 through the annular limiting seat 9 at the bottom, the two rotating gear rings 10 rotate circumferentially along the outer circumference of the insulating sleeve 2. The function of the limiting seat 9 is to restrict the axial displacement of the rotating gear ring 10, ensuring that it only rotates. The limiting cylinder 11, which rotates synchronously with the rotating gear ring 10, has a cutting block 19 on its outer positioning cylinder 12 that directly contacts the ice layer on the umbrella skirt surface. Since the cutting block 19 is serrated and moves in a circular motion with the positioning cylinder 12, it can physically cut the thicker surface ice shell, causing large ice layers to peel off the sleeve surface. When the rotating gear ring 10 rotates, the spherical block 14 at the bottom of the limiting cylinder 11 periodically contacts the extrusion block 18 at the top of the mechanism box 1. When the spherical block 14 contacts the arc surface of the extrusion block 18, it is squeezed upward to push the first piston rod 13, and the compression spring 15 is compressed. When the spherical block 14 is separated from the extrusion block 18, the compression spring 15 returns to its original position, causing the first piston rod 13 to rebound downward. Since the limiting cylinder 11 and the positioning cylinder 12 form a closed hydraulic cavity, the reciprocating motion of the first piston rod 13 causes the pressure inside the cavity to change alternately, pushing the second piston rod 16 to extend and retract along the axial direction of the positioning cylinder 12, thereby driving the ejector pin 17 to extend into the gap of the umbrella skirt and reciprocate to knock the residual ice layer in the gap, so as to completely remove the ice body in the gap.

[0027] Once the ice layer is cleared, the drive motor 7 stops working, and the rotating gear ring 10 returns to its initial position. At this time, the force exerted by the squeezing block 18 on the spherical block 14 disappears, and the compression spring 15 releases potential energy along the elastic deformation recovery direction, driving the first piston rod 13 to slide downwards and return to its initial position along the bottom of the limiting cylinder 11. Since the limiting cylinder 11 and the positioning cylinder 12 form a sealed hydraulic chamber, the reset movement of the first piston rod 13 restores the pressure inside the chamber to the initial equilibrium state. The second piston rod 16, which was previously pushed out by high pressure, slides in the opposite direction along the positioning cylinder 12 under hydraulic force, thereby driving the ejector pin 17 fixed at its end to retract into the positioning cylinder 12. After retraction, the ejector pin 17 and the positioning cylinder 12 maintain a sliding seal fit, and the entire de-icing assembly is in a standby state, waiting for the next de-icing command to be triggered. This design not only solves the lag and safety hazards of manual de-icing, but also completely removes ice from the surface and gaps, ensuring the stable insulation performance of the insulating sleeve 2, reducing faults such as partial discharge and component cracking caused by icing, ensuring that the metering accuracy is not affected, and significantly improving the operational reliability and service life of the transformer in low temperature rain and snow environments.

[0028] Example 2: Please refer to Figure 7 - Figure 12The embodiment is further illustrated with respect to the first embodiment, and an arc-shaped intercepting copper plate 6 is arranged between every two arc-shaped limiting covers 4. An installation cavity 20 is formed in the bottom end of the mechanism box 1, and an intercepting driving assembly is arranged in the installation cavity 20.

[0029] The intercepting driving assembly comprises a first rotating shaft 21, a second rotating shaft 22, a third rotating shaft 23, a fourth rotating shaft 24 and a stepping motor 25. The first rotating shaft 21, the second rotating shaft 22, the third rotating shaft 23 and the fourth rotating shaft 24 are respectively rotatably installed on the four inner walls of the installation cavity 20 through supports. The stepping motor 25 is fixedly installed on one side inner wall of the installation cavity 20, and the output end of the stepping motor 25 is coaxially fixed with one end of the first rotating shaft 21.

[0030] A bevel gear set 26 is arranged in transmission connection between the end of the first rotating shaft 21 away from the stepping motor 25 and the end of the second rotating shaft 22. The end of the third rotating shaft 23 and the other end of the second rotating shaft 22 are in meshing transmission connection through the bevel gear set 26, and the other end of the third rotating shaft 23 and the end of the fourth rotating shaft 24 are also in meshing transmission connection through the bevel gear set 26.

[0031] A guide groove 28 is formed in the side of the installation cavity 20 close to each intercepting copper plate 6. One end of each intercepting copper plate 6 is arranged in the side of the installation cavity 20 through the guide groove 28. An arc-shaped rack 29 is fixedly installed on the outside of one side of each intercepting copper plate 6. The first rotating shaft 21, the second rotating shaft 22, the third rotating shaft 23 and the fourth rotating shaft 24 are fixedly installed through the outside of the corresponding side of the arc-shaped rack 29. A limiting gear 27 is arranged on the side of the arc-shaped rack 29 in meshing connection.

[0032] A drainage groove 30 is formed in the side of each intercepting copper plate 6 inside the installation cavity 20. A flow guide pipe 31 is arranged at the bottom end of the mechanism box 1. The input end of the flow guide pipe 31 is fixedly installed in the bottom end of the installation cavity 20. A sealing plate 36 is fixedly installed on the outside of the end of each intercepting copper plate 6 away from the drainage groove 30.

[0033] An electric heating plate 32 is fixedly installed on the outside of the top end of each intercepting copper plate 6. A lead-through block 34 is fixedly installed on the outside of the side edge of each intercepting copper plate 6 away from the sealing plate 36. The output end of the lead-through block 34 is in lead-through connection with a lead wire 35. The output end of the lead wire 35 is in lead-through connection with the input end of the electric heating plate 32. A connection block 33 is fixedly installed on the side inner wall of the installation cavity 20 close to the lead-through block 34.

[0034] In this embodiment, when the deicing assembly starts to operate, the existing control system synchronously sends a trigger signal to the stepper motor 25 in the installation cavity 20, so that the interception driving assembly is started cooperatively with the deicing operation (this linkage mechanism is debugged during the programming stage of the inductor manufacturing): first, the first rotating shaft 21 is rotated after being powered by the stepper motor 25, and the power is transmitted to the second rotating shaft 22 through the bevel gear set 26 at the end, and then the third rotating shaft 23 and the fourth rotating shaft 24 are synchronously rotated in turn through the bevel gear set 26, so as to ensure that the four side interception copper plates 6 move synchronously, since the limiting gears 27 on the first rotating shaft 21, the second rotating shaft 22, the third rotating shaft 23 and the fourth rotating shaft 24 are respectively engaged with the corresponding arc-shaped racks 29 of the interception copper plates 6, the rotation of the limiting gears 27 drives the arc-shaped racks 29 to slide along the guide grooves 28, so that the interception copper plates 6 stretch out from the installation cavity 20 to the outside, and finally, the four interception copper plates 6 are respectively connected with the arc-shaped limiting covers 4 at the corners of the mechanism box 1 to form a closed annular interception cover, which fully covers the area below the insulation sleeve 2, can effectively receive the ice blocks knocked by the deicing assembly, prevents the falling of the ice blocks to the ground to cause safety hazards, and especially avoids the accidental injury of the ice blocks falling to the personnel or equipment below during the outdoor high-altitude operation. During the stretching process of the interception copper plates 6, the edge conductive blocks 34 are in contact with the connecting blocks 33 on the inner wall of the installation cavity 20, the conductive blocks 34 are connected with the connecting blocks 33 on the inner wall of the installation cavity 20, and the conductive blocks 34 are connected with the connecting blocks 33 on the inner wall of the installation cavity 20. The power supply line 35 supplies power for the electric heating plate 32 at the top end of the copper plate, the electric heating plate 32 generates heat to rapidly melt the ice blocks, the melted water flows along the surface of the interception copper plate 6 into the drainage groove 30 in the installation cavity 20, and finally is discharged to the outside of the equipment through the flow guide pipe 31 in a directional manner, so as to avoid the secondary icing of the accumulated water in the interception structure. The structure realizes the full-process automatic processing of the ice block collection, melting and drainage, and does not need manual cleaning of the falling ice blocks, which improves the safety of the deicing operation, reduces the interference of environmental factors on the equipment operation, and guarantees the stable operation of the inductor in the outdoor complex environment.

[0035] It should be further explained that when the deicing assembly completes the operation and is reset, the system sends a reverse signal to the stepper motor 25, and the reverse transmission of the rotating shaft, the bevel gear set 26, the limiting gear 27 and the arc-shaped rack 29 makes the interception copper plate 6 retract into the installation cavity 20 along the guide groove 28. During the retraction process, the conductive blocks 34 are separated from the connecting blocks 33, the electric heating plate 32 is automatically powered off, the energy consumption is completely cut off, and at the same time, after the interception copper plate 6 is completely retracted, the surface of the interception copper plate 6 is flush with the outer wall of the mechanism box 1, the sealing plate 36 blocks the opening of the guide groove 28 to prevent birds and insects from entering the installation cavity 20, and at the same time, the interception copper plate 6 is made of copper material, so that in the subsequent use in high-temperature weather, the interception copper plate 6 can also be rotated and stretched out a distance by controlling the start of the stepper motor 25 to contact the outside, so that the internal heat can be quickly dissipated to the environment through natural convection. During the heat dissipation process, the conductive blocks 34 and the connecting blocks 33 are kept in a separated state, and the electric heating plate 32 is not powered on to avoid additional energy consumption and heat generation.

[0036] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the scope of the present application is not limited to these specific embodiments.

[0037] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, and it is intended that the scope of the application be limited solely by the scope of the appended claims and the equivalents thereof.

Claims

1. A 10-35kV de-icing type metering current and voltage transformer, comprising a mechanism box (1), two insulating sleeves (2) symmetrically fixed to the top of the mechanism box (1), and a fixing seat (3) fixed to the bottom of the mechanism box (1), characterized in that: Arc-shaped limiting covers (4) are fixedly installed on the exterior of the four corners of the mechanism box (1). A hanging ring (5) is fixedly installed on the top of each arc-shaped limiting cover (4). An arc-shaped intercepting copper plate (6) is provided between every two arc-shaped limiting covers (4). An ice-removing component is provided on the exterior of the top of the mechanism box (1). An installation cavity (20) is opened inside the bottom of the mechanism box (1). An intercepting drive component is provided inside the installation cavity (20). The de-icing assembly includes a drive motor (7), two rotating gear rings (10) and two limiting cylinders (11). The drive motor (7) is fixed at the top center of the mechanism box (1). The two rotating gear rings (10) are sleeved through the outside of the two insulating sleeves (2) near the bottom. The two limiting cylinders (11) are fixedly installed through the outside of the top edge of the two rotating gear rings (10).

2. A 10-35kV de-icing type metering current and voltage transformer according to claim 1, characterized in that: The top of the drive motor (7) is fixedly mounted with a drive gear (8), and one side of each of the two rotating gear rings (10) is meshed with one side of the drive gear (8). The bottom of each of the two rotating gear rings (10) is rotatably mounted with an annular limiting seat (9), and the bottom of each limiting seat (9) is fixedly mounted on the outside of the top side of the mechanism box (1).

3. A 10-35kV de-icing type metering current and voltage transformer according to claim 2, characterized in that: Each of the limiting cylinders (11) has several positioning cylinders (12) installed at equal intervals on one side of the umbrella skirt gap near the insulating sleeve (2). Each of the limiting cylinders (11) has a first piston rod (13) installed inside the bottom end in a sliding seal. A spherical block (14) is fixedly installed at the bottom end of the first piston rod (13). A compression spring (15) is sleeved on one side of the bottom end of the first piston rod (13). The two ends of the compression spring (15) are respectively fixedly installed on one side of the rotating toothed ring (10) and the spherical block (14).

4. A 10-35kV de-icing type metering current and voltage transformer according to claim 3, characterized in that: A second piston rod (16) is slidably and sealed inside the side of each of the positioning cylinders (12) away from the limiting cylinder (11). A pin (17) is fixedly installed at the end of the second piston rod (16) away from the limiting cylinder (11). A number of cutting blocks (19) are fixedly installed on the outside of each of the positioning cylinders (12).

5. A 10-35kV de-icing type metering current and voltage transformer according to claim 3, characterized in that: Each of the rotating toothed rings (10) has several extrusion blocks (18) arranged at equal angles around the bottom side of the spherical block (14). The bottom ends of the extrusion blocks (18) are fixedly installed on the outside of the top side of the mechanism box (1). Both sides of each extrusion block (18) are arranged in an arc shape.

6. A 10-35kV de-icing type metering current and voltage transformer according to claim 1, characterized in that: The interception drive assembly includes a first rotating shaft (21), a second rotating shaft (22), a third rotating shaft (23), a fourth rotating shaft (24), and a stepper motor (25). The first rotating shaft (21), the second rotating shaft (22), the third rotating shaft (23), and the fourth rotating shaft (24) are respectively rotatably mounted on the four inner walls of the mounting cavity (20) via brackets. The stepper motor (25) is fixedly mounted on one inner wall of the mounting cavity (20), and the output end of the stepper motor (25) is coaxially fixed with one end of the first rotating shaft (21).

7. A 10-35kV de-icing type metering current and voltage transformer according to claim 6, characterized in that: A bevel gear set (26) is provided for the transmission connection between the end of the first rotating shaft (21) away from the stepper motor (25) and the end of the second rotating shaft (22). The end of the third rotating shaft (23) and the other end of the second rotating shaft (22), and the other end of the third rotating shaft (23) and the end of the fourth rotating shaft (24) are all connected by the meshing transmission of the bevel gear set (26).

8. A 10-35kV de-icing type metering current and voltage transformer according to claim 6, characterized in that: The mounting cavity (20) has a guide groove (28) through the inside of the side of each intercepting copper plate (6). One end of each intercepting copper plate (6) is set inside the side of the mounting cavity (20) through the guide groove (28). An arc-shaped rack (29) is fixedly installed on the outside of one side of each intercepting copper plate (6). Limiting gears (27) are fixedly installed through the outside of the side of the arc-shaped rack (29) of the first rotating shaft (21), the second rotating shaft (22), the third rotating shaft (23) and the fourth rotating shaft (24) near the corresponding side. One side of the limiting gear (27) meshes with one side of the arc-shaped rack (29).

9. A 10-35kV de-icing type metering current and voltage transformer according to claim 1, characterized in that: Each of the intercepting copper plates (6) has a drainage groove (30) through one side inside the mounting cavity (20). A guide pipe (31) is provided at the bottom of the mechanism box (1). The input end of the guide pipe (31) is fixedly installed inside the bottom of the mounting cavity (20). A sealing plate (36) is fixedly installed on the outside of the end of each intercepting copper plate (6) away from the drainage groove (30).

10. A 10-35kV de-icing type metering current and voltage transformer according to claim 9, characterized in that: An electric heating plate (32) is fixedly installed on the top outer side of each of the intercepting copper plates (6). A conductive block (34) is fixedly installed on the outer side of the side of each of the intercepting copper plates (6) away from the sealing plate (36). The output end of the conductive block (34) is connected to a wire (35). The output end of the wire (35) is connected to the input end of the electric heating plate (32). A connecting block (33) is fixedly installed on the inner wall of the mounting cavity (20) near the conductive block (34).

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