Extra-high voltage transformer structure capable of improving VFTO (Very Fast Transient Overvoltage) tolerance

Abstract

The utility model discloses an extra-high voltage transformer structure capable of improving VFTO resistance. The extra-high voltage transformer structure comprises an extra-high voltage transformer body and an anti-seismic mechanism. The anti-seismic mechanism is arranged on the extra-high voltage transformer body; the anti-seismic mechanism comprises an elastic component; the elastic assembly comprises a bottom plate, a fixed block, a movable block, a telescopic rod, a fixed plate and a spring; the bottom plate is fixedly arranged on the extra-high voltage transformer body; at least one fixing block is fixedly arranged on the bottom plate; the four movable blocks are arranged on the periphery of the fixed block in an annular array mode. One end of the telescopic rod is fixedly connected with the movable block; the fixed plate is fixedly connected with the other end of the telescopic rod; according to the extra-high voltage transformer structure capable of improving the VFTO tolerance capacity, the structure is simple and reasonable, the design is ingenious, shaking force can be dispersed and buffered, the shock resistance of the extra-high voltage transformer body is improved, and the practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, specifically to an ultra-high voltage transformer structure that improves the ability to withstand VFTO. Background Technology

[0002] Ultra-high voltage transformers refer to transformers with a voltage level of 1000kV and above. Ultra-high voltage transformers are key equipment used in ultra-high voltage power transmission systems. They are mainly used to connect transmission lines and power equipment of different voltage levels to ensure the stable operation of the power system.

[0003] The ultra-high voltage transformer disclosed in Chinese utility model patent CN202839271U includes a main transformer and a voltage regulating device. The voltage regulating device includes a voltage regulating transformer and a compensation transformer. The extension line of the center line connecting the core columns of the voltage regulating transformer intersects the projection of the center line connecting the side yokes of the compensation transformer on the horizontal plane. The center line connecting the core columns of the voltage regulating transformer is parallel to the center line connecting the core columns of the main transformer in the horizontal direction. The center line connecting the core columns of the voltage regulating transformer and the center line connecting the core columns of the main transformer are located on the same side of the center line connecting the side yokes of the compensation transformer. The bushings for connecting the main transformer and the voltage regulating device are respectively arranged on the adjacent sides of the main transformer and the voltage regulating device.

[0004] This invention can effectively simplify wiring, reduce space requirements, and lower costs.

[0005] Currently, UHV transformers on the market are designed to withstand VFTO (Voltage-Free Torque) to improve their performance. However, most existing UHV transformers are fixedly installed on concrete, which results in poor seismic resistance and makes them susceptible to damage from external factors (such as earthquakes), thus affecting their performance. Utility Model Content

[0006] The purpose of this invention is to provide an ultra-high voltage transformer structure that improves the ability to withstand VFTO, so as to solve the problem of poor seismic resistance mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a UHV transformer structure for improving VFTO tolerance, comprising a UHV transformer body and an anti-vibration mechanism; the anti-vibration mechanism is arranged on the UHV transformer body; the anti-vibration mechanism includes an elastic component; the elastic component includes a base plate, a fixed block, a movable block, a telescopic rod, a fixed plate, and a spring; the base plate is fixed to the UHV transformer body; at least one fixed block is fixed to the base plate; four movable blocks are arranged in a circular array around the fixed block; one end of the telescopic rod is fixedly connected to the movable block; the fixed plate is fixedly connected to the other end of the telescopic rod; the spring is sleeved on the telescopic rod, and both ends of the spring are fixedly connected to the movable block and the fixed plate, respectively.

[0008] Preferably, the fixing block is provided with four inclined surfaces A.

[0009] Preferably, the movable block is provided with an inclined surface B, and the inclined surface B is in sliding contact with the inclined surface A.

[0010] Preferably, the anti-seismic mechanism further includes a sliding component; the sliding component includes a base and a receiving groove; the base is arranged below the ultra-high voltage transformer body; the receiving groove is provided in the base, and the fixing plate is fixedly connected to the inner wall of the receiving groove.

[0011] Preferably, the base plate is slidably fitted with the receiving groove, and the top surface of the base plate is in contact with the top wall of the receiving groove.

[0012] Preferably, the sliding component further includes drainage holes; a plurality of drainage holes are provided in the receiving groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, by setting up an anti-vibration mechanism, causes the UHV transformer body to move downward when subjected to external vibration. This causes the base plate to move downward along with the fixed block, resulting in the inclined surface A on the fixed block pressing against the inclined surface B on the movable block. This causes the four movable blocks to move away from each other, thus dispersing the vibration force on the UHV transformer body. The telescopic rod and spring are then compressed, allowing the spring to buffer the dispersed vibration force, thereby improving the seismic resistance of the UHV transformer body. Compared to existing technologies, this utility model has a simple and reasonable structure, ingenious design, and can disperse and buffer vibration force, improving the seismic resistance of the UHV transformer body.

[0015] 2. By setting a sliding component, this utility model can conveniently restrict the position of the UHV transformer body, so that the UHV transformer body can only move in the vertical direction, thereby ensuring the stability of the position of the UHV transformer body. In addition, the water leakage hole can prevent water from accumulating in the containment tank, thereby improving the practicality of this utility model. Attached Figure Description

[0016] Figure 1 This is an assembly diagram of the high-voltage lead portion of the overall structure in Example 1;

[0017] Figure 2 This is an assembly diagram of the high-voltage lead-line wave-blocking assembly 1 of the overall structure of Example 1;

[0018] Figure 3 This is a schematic diagram of the high-voltage winding at the beginning of the overall structure of Example 1;

[0019] Figure 4 This is a schematic diagram of the overall structure of Example 2;

[0020] Figure 5 This is a cross-sectional view of the overall structure of Example 2;

[0021] Figure 6 This is a cross-sectional view of the base structure in Example 2;

[0022] Figure 7 This is a partial structural breakdown diagram of Example 2.

[0023] In the picture:

[0024] 1. High-voltage lead wave-damping assembly; 2. Nanocrystalline magnet; 3. Parallel resistor body; 4. Parallel resistor insulation; 5. Parallel resistor contact; 6. Wave-damping assembly support; 7. Oil guide hole; 8. High-voltage lead copper tube; 9. High-voltage lead connector; 10. Soft copper stranded wire; 11. Aluminum equalizing tube; 12. High-voltage winding working wire; 13. High-voltage winding shield wire; 14. Shielding connection wire; 15. Working wire tangling connection wire; 16. High-voltage head end; 20. UHV transformer body; 30. Anti-vibration mechanism; 40. Elastic assembly; 50. Sliding assembly; 4001. Base plate; 4002. Fixing block; 4003. Movable block; 4004. Telescopic rod; 4005. Fixing plate; 4006. Spring; 5001. Base; 5002. Receiving groove; 5003. Drain hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1:

[0027] Please see Figures 1 to 3 This utility model provides a technical solution: a structure for an ultra-high voltage transformer with improved VFTO withstand capability, comprising a high-voltage lead wave-blocking assembly 1. The high-voltage lead wave-blocking assembly 1 includes a nanocrystalline magnet 2, a parallel resistor body 3, a parallel resistor insulation 4, a parallel resistor contact 5, a wave-blocking assembly support 6, an oil guide hole 7, a high-voltage lead copper rod 8, and a conventional detachable lead high-voltage lead connector 9, soft copper stranded wire 10, and an aluminum equalizing tube 11. The implementation method is as follows: this structure adds a section of the high-voltage lead wave-blocking assembly 1 to the soft copper stranded wire 10 inside the conventional detachable lead aluminum equalizing tube 11. This wave-blocking assembly uses a high-voltage lead copper tube instead of the soft copper stranded wire 10 for current carrying. The copper tube contains multiple nanocrystalline magnets 2 connected in series. Each nanocrystalline magnet 2 has a parallel resistor body 3 running through its center, and the parallel resistor body 3 is connected in parallel with the magnet section through contacts at both ends. The high-voltage lead wave blocking assembly 1 has an insulating support component, which can be easily installed in the equalizing tube of the high-voltage detachable lead, and ensures that the center of the lead is consistent with the center of the equalizing tube. The support component has an elongated hole for conducting oil flow, and the hole is staggered inward and outward along the width.

[0028] This improved high-voltage winding start-end winding method divides the high-voltage winding start-end into units of four coils, comprising a high-voltage winding working wire 12, a high-voltage winding shielding wire 13, a shielding connecting wire 14, a working wire entanglement connecting wire 15, and a high-voltage start-end protrusion 16. The implementation method is as follows: the high-voltage winding start-end is wound in pairs along the axial direction of the winding, with the axially intersecting coils connected by the entanglement connecting wire on the inner diameter side of the winding; along the radial direction of the winding, it is a four-segment inserted shielding winding, with the shielding depth of each unit decreasing progressively from the start-end to the end.

[0029] Example 2:

[0030] Please see Figures 3 to 7This utility model provides another technical solution: a UHV transformer structure for improving VFTO tolerance, including a UHV transformer body 20 and an anti-vibration mechanism 30; the anti-vibration mechanism 30 is arranged on the UHV transformer body 20; the anti-vibration mechanism 30 includes an elastic component 40; the elastic component 40 includes a base plate 4001, a fixing block 4002, a movable block 4003, a telescopic rod 4004, a fixing plate 4005, and a spring 4006; the base plate 4001 is fixed to the UHV transformer body 20; the two fixing blocks 4002 are linearly aligned. The fixed array is fixed on the base plate 4001; four movable blocks 4003 are arranged in a ring around the fixed block 4002; one end of the telescopic rod 4004 is fixedly connected to the movable block 4003; the fixed plate 4005 is fixedly connected to the other end of the telescopic rod 4004; the spring 4006 is sleeved on the telescopic rod 4004, and both ends of the spring 4006 are fixedly connected to the movable block 4003 and the fixed plate 4005 respectively; four inclined surfaces A are provided on the fixed block 4002; inclined surfaces B are provided on the movable block 4003, and inclined surfaces B slide in contact with inclined surfaces A.

[0031] This invention, by setting up an anti-vibration mechanism 30, allows the UHV transformer body 20 to move downwards when subjected to external vibrations. This causes the base plate 4001 to move the fixed block 4002 downwards, resulting in the inclined surface A on the fixed block 4002 pressing against the inclined surface B on the movable block 4003. This causes the four movable blocks 4003 to move away from each other, thus dispersing the vibration force on the UHV transformer body 20. The telescopic rod 4004 and spring 4006 are then compressed, allowing the spring 4006 to buffer the dispersed vibration force, thereby improving the anti-vibration performance of the UHV transformer body 20. Compared to existing technologies, this invention has a simple and reasonable structure, ingenious design, and can disperse and buffer vibration force, thus improving the anti-vibration performance of the UHV transformer body 20.

[0032] As a preferred embodiment, the seismic-resistant mechanism 30 further includes a sliding component 50; the sliding component 50 includes a base 5001, a receiving groove 5002, and drainage holes 5003; the base 5001 is arranged below the ultra-high voltage transformer body 20; the receiving groove 5002 is provided in the base 5001, and the fixing plate 4005 is fixedly connected to the inner wall of the receiving groove 5002; the bottom plate 4001 is slidably engaged with the receiving groove 5002, and the top surface of the bottom plate 4001 contacts the inner top wall of the receiving groove 5002; a plurality of drainage holes 5003 are provided in the receiving groove 5002.

[0033] This utility model, by setting a sliding component 50, facilitates the restriction of the position of the UHV transformer body 20, so that the UHV transformer body 20 can only move in the vertical direction, thereby ensuring the stability of the position of the UHV transformer body 20. In addition, the water leakage hole 5003 can prevent water from accumulating in the receiving groove 5002, thereby improving the practicality of this utility model.

[0034] Working principle: When the UHV transformer body 20 is subjected to external vibration, the UHV transformer body 20 will move downward, causing the base plate 4001 to slide downward in the receiving groove 5002, causing the fixed block 4002 to move downward, causing the inclined surface A on the fixed block 4002 to press against the inclined surface B on the movable block 4003, causing the four movable blocks 4003 to slide away from each other in the receiving groove 5002, so that the four movable blocks 4003 can disperse the vibration force received by the UHV transformer body 20, causing the telescopic rod 4004 and spring 4006 to contract under force, so that the spring 4006 can buffer the dispersed vibration force, thereby improving the seismic resistance of the UHV transformer body 20, and the drainage hole 5003 can prevent water from accumulating in the receiving groove 5002.

[0035] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A structure for an ultra-high voltage transformer to improve its ability to withstand VFTO (Voltage-Free Torque), characterized in that, The system includes an ultra-high voltage transformer body (20) and an anti-seismic mechanism (30); the anti-seismic mechanism (30) is arranged on the ultra-high voltage transformer body (20); the anti-seismic mechanism (30) includes an elastic component (40); the elastic component (40) includes a base plate (4001), a fixed block (4002), a movable block (4003), a telescopic rod (4004), a fixed plate (4005), and a spring (4006); the base plate (4001) is fixed to the ultra-high voltage transformer body (20); at least one The fixed block (4002) is fixedly mounted on the base plate (4001); four movable blocks (4003) are arranged in a circular array around the fixed block (4002); one end of the telescopic rod (4004) is fixedly connected to the movable block (4003); the fixed plate (4005) is fixedly connected to the other end of the telescopic rod (4004); the spring (4006) is sleeved on the telescopic rod (4004), and both ends of the spring (4006) are fixedly connected to the movable block (4003) and the fixed plate (4005) respectively.

2. The ultra-high voltage transformer structure for improving VFTO withstand capability according to claim 1, characterized in that, The fixing block (4002) has four inclined surfaces A.

3. The ultra-high voltage transformer structure for improving VFTO withstand capability according to claim 2, characterized in that, The movable block (4003) is provided with an inclined surface B, and the inclined surface B is in sliding contact with the inclined surface A.

4. The ultra-high voltage transformer structure for improving VFTO withstand capability according to claim 1, characterized in that, The anti-seismic mechanism (30) further includes a sliding component (50); the sliding component (50) includes a base (5001) and a receiving groove (5002); the base (5001) is arranged below the ultra-high voltage transformer body (20); the receiving groove (5002) is provided in the base (5001), and the fixing plate (4005) is fixedly connected to the inner wall of the receiving groove (5002).

5. The ultra-high voltage transformer structure for improving VFTO withstand capability according to claim 4, characterized in that, The base plate (4001) is slidably fitted with the receiving groove (5002), and the top surface of the base plate (4001) is in contact with the inner top wall of the receiving groove (5002).

6. The ultra-high voltage transformer structure for improving VFTO withstand capability according to claim 5, characterized in that, The sliding component (50) also includes a drainage hole (5003); a plurality of drainage holes (5003) are provided in the receiving groove (5002).

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