Three-phase three-dimensional roll iron core transformer

Abstract

The utility model relates to a three-phase three-dimensional roll iron core transformer which is applied to the field of transformer technical equipment, and realizes that when a transformer body is mounted in the air, a ceiling is mounted on the top of the transformer body through an elastic rope and covers the top of the transformer body, and snow is accumulated on the ceiling in snowy weather, so that the transformer body is prevented from falling off. A ceiling is isolated from a transformer body, a sliding rod below the ceiling is compressed downwards along with more and more snow and increased gravity, when the sliding rod slowly slides to a set distance, a distance sensor transmits a signal to a controller, electromagnetic blocks are automatically opened through the controller, the two electromagnetic blocks attract each other at the moment, and the sliding rod rapidly moves downwards instantly; and then a power source is switched off through control, the sliding rods are pushed upwards to be reset through compression springs, the sliding rods can dissipate heat of electromagnetic blocks in the bottom rods through heat dissipation openings in the operation process, and rainwater can be prevented from entering the interior through a protective breathable layer.

Description

Technical Field

[0001] This utility model relates to a three-phase three-dimensional wound core transformer, and in particular to a three-phase three-dimensional wound core transformer applied in the field of transformer technology equipment. Background Technology

[0002] Three-phase three-dimensional wound core transformers are widely used in the power transmission and distribution links of power systems, including substations, industrial and mining enterprises, commercial buildings, residential communities, etc. Their high efficiency, energy saving, low noise and high reliability make them of great application value in various fields.

[0003] Chinese patent CN215069583U discloses a high-voltage lead structure for a three-dimensional wound core transformer, including a three-phase coil, a core, clamps, leads, and a tank cover. The core adopts a three-dimensional wound core structure, including a core column and a yoke. The coil is set on the core column, and the coil and the core are fixed together by clamps on both sides. The high-voltage lead structure of the three-dimensional wound core transformer also includes high-voltage leads, high-voltage bushings, several wire clamps, and a de-energized tap changer. The high-voltage leads are led out from the coils, the high-voltage bushings are set above the tank cover, the wire clamps are fixed to the outside of the clamps to hold the high-voltage leads, and the de-energized tap changer is set outside the arc of the yoke or in the space on the outer side of the clamps and fixed to the tank cover. This arrangement can reduce the distance between the tank cover and the yoke, thereby reducing the height of the oil tank, reducing the amount of transformer oil used, reducing the amount of steel used in the oil tank, and reducing the cost of the transformer.

[0004] In winter, snow may accumulate on the transformer's casing and insulation components, increasing the leakage current path on the insulation surface. If the snow melts and forms a water film, it will further reduce the insulation performance and increase the risk of leakage and short circuit. Utility Model Content

[0005] The technical problem that this utility model aims to solve in view of the above-mentioned prior art is that snow may accumulate on the transformer's casing and insulating components, increasing the leakage current path on the insulating surface. If the snow melts and forms a water film, it will further reduce the insulation performance and increase the risk of leakage and short circuit.

[0006] To address the aforementioned problems, this utility model provides a three-phase three-dimensional wound core transformer, comprising a transformer body, a mounting base detachably connected to the bottom end of the transformer body, a bottom rod fixedly connected to the middle of the top end of the transformer body, a sliding rod slidably connected to the top end of the bottom rod, a compression spring fixedly connected inside the bottom rod, and the top end of the compression spring fixedly connected to the bottom end of the sliding rod, an electromagnetic block fixedly connected to the bottom end of the sliding rod and the inner bottom wall of the bottom rod, and the two electromagnetic blocks attract each other, a distance sensor embedded in the middle of the electromagnetic block located at the bottom, heat dissipation vents symmetrically opened on the side wall of the bottom rod, a filter screen installed on the inner wall of the heat dissipation vent, a protective breathable layer fixedly connected to the end of the filter screen near the heat dissipation vent, a canopy detachably connected to the top end of the sliding rod, two sets of third limiting rings symmetrically fixedly connected to the side end of the transformer body, and elastic ropes connecting the four corners of the canopy to the third limiting rings.

[0007] In the aforementioned three-phase three-dimensional wound core transformer, the up-and-down movement of the slide rod is controlled by an electromagnetic block and a compression spring, which can shake the snow pressed on the roof and make it slide down the slope, thereby protecting the transformer body.

[0008] As a further improvement of this application, the top of the slide bar is threadedly connected to a spherical dome, and the canopy covers the top of the spherical dome.

[0009] As a further improvement of this application, a controller for controlling the electromagnetic block is fixedly connected to the transformer body, and the distance sensor is electrically connected to the controller.

[0010] As a further improvement of this application, a retaining frame is fixedly connected to the top of the mounting base, and first screw holes are symmetrically drilled on the mounting base located within the retaining frame. A retaining shaft corresponding to the first screw hole is fixedly connected to the bottom of the transformer body, and the retaining shaft is fixed to the first screw hole by bolts.

[0011] As another improvement of this application, a card plate is detachably connected to the side end of the card frame, and slots are symmetrically chiseled in the cross section of the side end of the card frame. An insert block is fixedly connected to the cross section of the card plate near the card frame, and the insert block engages with the slot.

[0012] As a further improvement to this application, both the slot and the plug have second screw holes drilled on their sides, and the slot and the plug are fixed together by screws.

[0013] As a further improvement to this application, a set of second limiting rings are symmetrically fixedly connected to the upper and lower sides of the transformer body, and a first limiting ring is symmetrically fixedly connected to the top of the mounting base on both sides of the frame, and the second limiting rings are respectively connected to the first limiting rings through positioning ropes.

[0014] In summary, when the transformer body is installed at a high altitude, a canopy is installed on top of the transformer body using elastic ropes, covering the top of the transformer body. In case of heavy snow, the snow accumulates on the canopy, isolating it from the transformer body. As the snow accumulates, the increased gravity compresses the sliding rod under the canopy downwards. When the sliding rod slowly slides to a set distance, the distance sensor transmits a signal to the controller, which automatically activates the electromagnetic blocks. At this point, the two electromagnetic blocks attract each other, causing the sliding rod to move downwards rapidly and instantly, generating vibration that shakes off the snow accumulated on the canopy. The friction generated during the shaking of the canopy can be reduced by the ball joint, extending its service life. Subsequently, the power is disconnected by the control, and the sliding rod is pushed upwards to reset by the compression spring. During operation, the sliding rod dissipates heat to the electromagnetic blocks inside the base rod through the heat dissipation vents, and the protective breathable layer prevents rainwater from entering the interior. By controlling the up and down movement of the sliding rod through the electromagnetic blocks and compression springs, the snow pressed on the canopy can be shaken off and slid down the slope, thus protecting the transformer body. Attached Figure Description

[0015] Figure 1 This is an isometric view of the transformer according to the first embodiment of this application;

[0016] Figure 2 Exploded views of the transformer installation according to the first and second embodiments of this application;

[0017] Figure 3 This is a structural diagram of the telescopic component according to the first embodiment of this application;

[0018] Figure 4 This is a structural diagram of the heat dissipation port according to the first embodiment of this application;

[0019] Figure 5 This is a structural diagram of the mounting base according to the second embodiment of this application;

[0020] Figure 6 This is a diagram of the card frame structure according to the second embodiment of this application.

[0021] Explanation of the labels in the diagram:

[0022] 1. Transformer body; 2. Mounting base; 3. Frame; 4. Plate; 5. First limiting ring; 6. Second limiting ring; 7. Top; 8. Third limiting ring; 9. Elastic rope; 10. Positioning rope; 11. First screw hole; 12. Shaft; 13. Base rod; 14. Slide rod; 15. Compression spring; 16. Dome; 17. Electromagnetic block; 18. Distance sensor; 19. Heat dissipation vent; 20. Protective breathable layer; 21. Filter screen; 22. Slot; 23. Insert block. Detailed Implementation

[0023] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0024] First implementation method:

[0025] Figure 1-4 A three-phase three-dimensional wound core transformer is shown, including a transformer body 1. A mounting base 2 is detachably connected to the bottom end of the transformer body 1. A bottom rod 13 is fixedly connected to the middle of the top end of the transformer body 1. A slide rod 14 is slidably connected to the top end of the bottom rod 13. A compression spring 15 is fixedly connected inside the bottom rod 13, and the top end of the compression spring 15 is fixedly connected to the bottom end of the slide rod 14. Electromagnetic blocks 17 are fixedly connected to the bottom end of the slide rod 14 and the inner bottom wall of the bottom rod 13, and the two electromagnetic blocks 17 attract each other. A distance sensor 18 is embedded in the middle of the electromagnetic block 17 at the bottom. Heat dissipation vents 19 are symmetrically opened on the side wall of the bottom rod 13. A filter screen 21 is installed on the inner wall of the heat dissipation vent 19. A protective breathable layer 20 is fixedly connected to the end of the filter screen 21 near the heat dissipation vent 19. A canopy 7 is detachably connected to the top end of the slide rod 14. Two sets of third limiting rings 8 are symmetrically fixedly connected to the side end of the transformer body 1. The four corners of the canopy 7 are connected to the third limiting rings 8 by elastic ropes 9.

[0026] The top of the slide bar 14 is threadedly connected to a dome 16, and the canopy 7 covers the top of the dome 16. A controller for controlling the electromagnetic block 17 is fixedly connected to the transformer body 1, and the distance sensor 18 is electrically connected to the controller.

[0027] Working principle: When the transformer body 1 is installed at a high altitude, a canopy 7 is installed on the top of the transformer body 1 by elastic rope 9, covering the top of the transformer body 1. In heavy snow, snow accumulates on the canopy 7, isolating it from the transformer body 1. As more and more snow accumulates, the gravity increases, compressing the slide rod 14 under the canopy 7 downward. When the slide rod 14 slowly slides to a set distance, the distance sensor 18 transmits a signal to the controller, which automatically opens the electromagnetic block 17. At this time, the two electromagnetic blocks 17 attract each other, causing the slide rod 14 to move downward quickly and instantaneously, thereby generating vibration to shake off the snow accumulated on the canopy 7. The friction generated by the shaking of the canopy 7 can be reduced by the ball top 16, extending its service life. Then, the power is disconnected by the control, and the slide rod 14 is pushed upward to reset by the compression spring 15. During operation, the slide rod 14 can dissipate heat to the electromagnetic block 17 inside the bottom rod 13 through the heat dissipation vent 19, and the protective breathable layer 20 can prevent rainwater from entering the interior.

[0028] As described above, by controlling the up and down movement of the slide bar 14 through the electromagnetic block 17 and the compression spring 15, the snow pressed on the roof 7 can be shaken off and slid down the slope, thereby protecting the transformer body 1.

[0029] Second implementation method:

[0030] Figure 2 and Figure 5-6The top of the mounting base 2 is fixedly connected to a frame 3. The mounting base 2 located inside the frame 3 has symmetrically drilled first screw holes 11. The bottom of the transformer body 1 is fixedly connected to a locking shaft 12 corresponding to the first screw hole 11, and the locking shaft 12 is fixed to the first screw hole 11 by bolts. The side of the frame 3 is detachably connected to a locking plate 4. The side section of the frame 3 has symmetrically drilled slots 22. The end section of the locking plate 4 near the frame 3 is fixedly connected to a plug 23, and the plug 23 engages with the slot 22. The side ends of the slot 22 and the plug 23 are both drilled with second screw holes, and the slot 22 and the plug 23 are fixed by screws. The side ends of the transformer body 1 are symmetrically fixedly connected to a set of second limiting rings 6. The tops of the mounting bases 2 located on both sides of the frame 3 are symmetrically fixedly connected to first limiting rings 5, and the second limiting rings 6 are respectively connected to the first limiting rings 5 ​​by positioning ropes 10.

[0031] Working principle: When installing the transformer body 1, the transformer body 1 can be placed in the clip frame 3 so that the clip shaft 12 is inserted into the first screw hole 11 and then fixed from the bottom of the mounting base 2 with bolts. Then, the clip plate 4 is engaged with the slot 22 through the insert block 23 and then fixed with screws. At this time, the two ends of the positioning rope 10 are engaged and connected to the first limit ring 5 on the transformer body 1 and the mounting base 2 respectively, thereby reinforcing the transformer body 1.

[0032] By fixing the transformer body 1 in the frame 3 as described above, the transformer body 1 can be reinforced to prevent it from shaking in windy weather. At the same time, the positioning ropes 10 on both sides increase the stress points.

[0033] In light of current practical needs, the above-described embodiments adopted in this application are not limited to this scope of protection. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A three-phase three-dimensional wound core transformer, comprising a transformer body (1), characterized in that: The transformer body (1) is detachably connected to a mounting base (2) at its bottom end. A base rod (13) is fixedly connected to the middle of the top end of the transformer body (1). A sliding rod (14) is slidably connected to the top end of the base rod (13). A compression spring (15) is fixedly connected inside the base rod (13), and the top end of the compression spring (15) is fixedly connected to the bottom end of the sliding rod (14). Electromagnetic blocks (17) are fixedly connected to both the bottom end of the sliding rod (14) and the inner bottom wall of the base rod (13). The two electromagnetic blocks (17) attract each other. The electromagnetic block (17) located at the bottom... 7) A distance sensor (18) is embedded in the middle. The bottom rod (13) has symmetrical heat dissipation vents (19) on its side wall. A filter screen (21) is installed on the inner wall of the heat dissipation vent (19). A protective breathable layer (20) is fixedly connected to one end of the filter screen (21) near the heat dissipation vent (19). A canopy (7) is detachably connected to the top of the slide rod (14). Two sets of third limiting rings (8) are symmetrically fixedly connected to the side end of the transformer body (1). The four corners of the canopy (7) are connected to the third limiting rings (8) by elastic ropes (9).

2. A three-phase three-dimensional wound core transformer according to claim 1, characterized in that: The top of the slide bar (14) is threadedly connected to a dome (16), and the canopy (7) covers the top of the dome (16).

3. A three-phase three-dimensional wound core transformer according to claim 1, characterized in that: A controller with a control electromagnetic block (17) is fixedly connected to the transformer body (1), and the distance sensor (18) is electrically connected to the controller.

4. A three-phase three-dimensional wound core transformer according to claim 1, characterized in that: The mounting base (2) is fixedly connected to a frame (3) at its top. The mounting base (2) located in the frame (3) has symmetrically drilled first screw holes (11). The bottom of the transformer body (1) is fixedly connected to a retaining shaft (12) corresponding to the first screw hole (11), and the retaining shaft (12) is fixed to the first screw hole (11) by bolts.

5. A three-phase three-dimensional wound core transformer according to claim 4, characterized in that: The card frame (3) is detachably connected to a card plate (4) on its side end. The card frame (3) has slots (22) symmetrically carved on its side end cross section. The card plate (4) is fixedly connected to a plug (23) on one end of its cross section near the card frame (3), and the plug (23) engages with the slot (22).

6. A three-phase three-dimensional wound core transformer according to claim 5, characterized in that: The slot (22) and the plug (23) are both drilled with second screw holes on their sides, and the slot (22) and the plug (23) are fixed by screws.

7. A three-phase three-dimensional wound core transformer according to claim 1, characterized in that: The transformer body (1) has a set of second limiting rings (6) fixedly connected symmetrically on both sides. The mounting base (2) located on both sides of the frame (3) has a first limiting ring (5) fixedly connected symmetrically on its top. The second limiting rings (6) are connected to the first limiting rings (5) respectively through positioning ropes (10).

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