High-voltage upper clamping piece of dry-type transformer

Abstract

The utility model discloses a high-voltage upper clamping piece of a dry-type transformer, which belongs to the field of dry-type transformers and comprises a coil and an iron core arranged in the coil, a clamping piece mechanism is arranged outside the iron core and comprises two groups of concave seats, side plates, a clamping piece body, two-way screw rods, movable plates, concave blocks and connecting rods, the two sides of the lower left-right symmetrical concave base are fixedly connected with side plates correspondingly, the upper left-right symmetrical concave base is fixedly connected between the side plates through fastening nuts correspondingly, and by adjusting the distance between the symmetrical clamping piece bodies and the distance between the upper and lower two sets of symmetrical clamping piece bodies, the clamping piece bodies can be clamped in the clamping piece mechanism. The clamping piece body can achieve the purpose of rapidly clamping and fixing iron cores with different thicknesses, and is suitable for clamping and fixing the iron cores in the dry-type transformers with different sizes and heights, so that the use cost of the clamping piece is reduced, and the use flexibility and practicability of the clamping piece are improved.

Description

Technical Field

[0001] This utility model relates to the field of dry-type transformers, and in particular to a high-voltage upper clamp for dry-type transformers. Background Technology

[0002] A dry-type transformer is a type of power transformer whose core and windings are not immersed in insulating oil, but rather dissipate heat through natural cooling or air cooling. It mainly consists of a core made of silicon steel sheets and coils cast in epoxy resin. An insulating cylinder is placed between the high-voltage and low-voltage coils to increase electrical insulation. Dry-type transformers have high mechanical strength and short-circuit withstand capability, good thermal stability, high reliability, long service life, and no oil leakage problems, resulting in relatively low maintenance requirements. They are widely used in power transmission and distribution systems in factories, high-rise buildings, commercial centers, airports, docks, subways, oil platforms, and many other fields, providing a stable and reliable power supply for various equipment and systems.

[0003] In existing technologies, the core of dry-type transformers often needs to be clamped and fixed using clamps to ensure the stability of the core during use. However, most existing clamps for dry-type transformers are made of channel steel. In use, two sets of clamps are placed on the upper and lower ends of the core, and screws are passed through both ends of the symmetrical clamps. Finally, nuts are screwed onto the screws to clamp and fix the core between the clamps. This operation is cumbersome, and the overall structure of the clamps is relatively simple, making it difficult to quickly clamp and fix cores of different thicknesses. At the same time, it is difficult to adapt to dry-type transformers of different heights. Corresponding clamps are required when clamping and fixing cores of different thicknesses and heights, which not only increases the cost of using the clamps but also reduces their flexibility and practicality. Utility Model Content

[0004] The main purpose of this utility model is to provide a high-voltage clamping component for dry-type transformers, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A high-voltage clamping component for a dry-type transformer includes a coil and an iron core disposed within the coil. A clamping mechanism is provided outside the iron core, comprising a concave seat, side plates, a clamping body, a bidirectional screw, a movable plate, a concave block, and a connecting rod. The concave seats are arranged in two symmetrical sets, with side plates fixedly connected to both sides of the lower symmetrical concave seats. The upper symmetrical concave seats are fixedly connected to the side plates by fastening nuts. A symmetrical clamping body is movably connected between the symmetrical concave seats. The bidirectional screw is movably connected between the concave seats via first rotating rods at both ends. The two movable plates are movably connected to the bidirectional screw via screw holes on the side walls, and the connecting rod is movably connected between the movable plate and the clamping body via second rotating rods at both ends.

[0007] As a preferred embodiment of this utility model, side plates are fixedly installed on the front and rear rear walls of the symmetrical concave seats at the bottom, and a vertical opening is provided on the front wall of the side plates. Threaded short rods are fixedly installed on the front and rear rear walls of the symmetrical concave seats at the top, and the threaded short rods are movably installed in the vertical openings. The fastening nut is threadedly connected to the threaded short rod.

[0008] As a preferred embodiment of this utility model, a first rotating hole is provided on the side wall of the concave seat, and a guide rod is fixedly installed in the concave seat.

[0009] As a preferred embodiment of this utility model, the left and right ends of the bidirectional screw are respectively fixedly installed with a first rotating rod, and the first rotating rod is movably installed in the first rotating hole. A knob is also fixedly installed on the outer end of one of the first rotating rods.

[0010] As a preferred embodiment of this utility model, the movable plate is provided with a set of symmetrical left and right sides, and the side wall of the movable plate is provided with screw holes and is threaded together with a bidirectional screw rod through the screw holes. Concave blocks are fixedly installed at both ends of the outer side wall of the movable plate and the outer side wall of the clamp body, and second rotating holes are respectively provided on both sides of the inner wall of the concave block. A set of symmetrical second rotating rods are fixedly installed at both ends of the connecting rod, and the second rotating rods are movably installed in the second rotating holes.

[0011] As a preferred embodiment of this utility model, a set of symmetrical guide holes are provided on the side wall of the clamp body, and the clamp body is movably installed together with the guide rod through the guide holes.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this invention, the clamping mechanism places the lower part of the iron core between the clamping bodies of the symmetrical concave seats on the lower left and right sides. Rotating the knob drives the bidirectional screw to rotate via the first rotating rod, causing the symmetrical movable plates to move relative to each other through the screw holes along the bidirectional screw. This forces the angle between the symmetrical connecting rods on the left and right sides to gradually decrease, and during this change, the symmetrical clamping bodies move relative to each other along the guide rod until the lower part of the iron core is clamped and fixed between the clamping bodies, preventing further rotation. Then, the symmetrical concave seats on the upper side are moved downwards, causing the threads... The short rod moves within the vertical opening on the side plate mounted on the lower concave seat until the upper part of the iron core is positioned between the symmetrical clamp bodies. Then, the knob is rotated to clamp and fix the upper part of the iron core through the clamp bodies. By adjusting the distance between the symmetrical clamp bodies and the distance between the upper and lower sets of symmetrical clamp bodies, the clamp bodies can quickly clamp and fix iron cores of different thicknesses. This adapts to the clamping and fixing of iron cores in dry-type transformers of different sizes and heights, thereby reducing the cost of using the clamps and improving their flexibility and practicality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of the clamping mechanism of this utility model;

[0016] Figure 3 This is a schematic diagram of the overall structure of the concave seat and side plate of this utility model;

[0017] Figure 4 This is a structural breakdown diagram of the clamping mechanism of this utility model.

[0018] In the diagram: 1. Coil; 2. Iron core; 3. Clamping mechanism; 4. Concave seat; 5. Side plate; 6. Vertical opening; 7. Threaded short rod; 8. Fastening nut; 9. First rotating hole; 10. Guide rod; 11. Clamping body; 12. Guide hole; 13. Bidirectional screw; 14. First rotating rod; 15. Knob; 16. Movable plate; 17. Screw hole; 18. Concave block; 19. Second rotating hole; 20. Connecting rod; 21. Second rotating rod. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] like Figure 1 - Figure 4 As shown, a high-voltage clamping component for a dry-type transformer includes a coil 1 and an iron core 2 disposed within the coil 1. A clamping mechanism 3 is provided outside the iron core 2. The clamping mechanism 3 includes a concave seat 4, side plates 5, a clamping body 11, a bidirectional screw 13, a movable plate 16, a concave block 18, and a connecting rod 20. The concave seat 4 is provided in two symmetrical sets, and the lower symmetrical concave seat 4 is fixedly connected to the two sides of the side plates 5 respectively. The upper symmetrical concave seat 4 is fixedly connected to the side plates 5 respectively by fastening nuts 8. A set of symmetrical clamping bodies 11 is also movably connected between the left and right symmetrical concave seats 4. The bidirectional screw 13 is movably connected between the concave seats 4 by the first rotating rods 14 at both ends. The two movable plates 16 are movably connected to the bidirectional screw 13 through screw holes 17 on the side walls respectively. The connecting rod 20 is movably connected between the movable plate 16 and the clamping body 11 by the second rotating rods 21 at both ends.

[0021] like Figure 2 and Figure 3 As shown, side plates 5 are fixedly installed on the front and rear walls of the lower symmetrical concave seats 4, and a vertical opening 6 is provided on the front wall of the side plate 5. Threaded short rods 7 are fixedly installed on the front and rear walls of the upper symmetrical concave seats 4, and the threaded short rods 7 are movably installed in the vertical opening 6. The fastening nut 8 is threadedly connected to the threaded short rod 7. By moving the upper set of symmetrical concave seats 4, the threaded short rods 7 on both sides of the upper set of symmetrical concave seats 4 can move in the vertical opening 6 on the side plates 5 installed on both sides of the lower set of symmetrical concave seats 4. The height distance between the upper and lower sets of concave seats 4 can be adjusted according to the height of the dry-type transformer. After adjustment, tightening the fastening nut 8 on the threaded short rod 7 can fix the distance between the upper and lower sets of concave seats 4, so that the clamp body 11 can clamp and fix the iron core 2 on dry-type transformers of different heights.

[0022] like Figure 4 As shown, a first rotating hole 9 is provided on the side wall of the concave seat 4. The first rotating hole 9 is used to cooperate with the first rotating rod 14 to realize the rotation operation. A guide rod 10 is fixedly installed in the concave seat 4. The guide rod 10 is used to cooperate with the clamp body 11 to guide the movement.

[0023] like Figure 4 As shown, the left and right ends of the bidirectional screw 13 are respectively fixedly installed with a first rotating rod 14, and the first rotating rod 14 is movably installed in the first rotating hole 9. A knob 15 is also fixedly installed on the outer end of one end of the first rotating rod 14. Rotating the knob 15 will drive the bidirectional screw 13 to rotate through the first rotating rod 14, thereby adjusting the clamp body 11.

[0024] like Figure 4As shown, the movable plate 16 has a set of symmetrically arranged plates on the left and right sides. Screw holes 17 are provided on the side walls of the movable plate 16, and the plates are threaded together with the bidirectional screw rod 13 through the screw holes 17. Concave blocks 18 are fixedly installed at both ends of the outer side walls of the movable plate 16 and the outer side walls of the clamping body 11. Second rotating holes 19 are respectively provided on both sides of the inner wall of the concave opening of the concave block 18. A set of symmetrical second rotating rods 21 are fixedly installed at both ends of the connecting rod 20, and the second rotating rods 21 are movably installed in the second rotating holes 19. Driven by the bidirectional screw rod 13, they move symmetrically. The plate 16 will move relative to the screw 17 opened on the side wall along the bidirectional screw 13. Since the connecting rod 20 is movably installed between the movable plate 16 and the concave block 18 installed on the clamping body 11, the second rotating rod 21 at both ends of the connecting rod 20 will rotate in the second rotating hole 19 opened on the concave block 18. The connecting rod 20 is tilted and the angle formed between the two symmetrical connecting rods 20 gradually decreases. In this way, the clamping body 11 can move relative to the iron core 2 and be clamped and fixed between the clamping bodies 11 according to the thickness of the iron core 2.

[0025] like Figure 4 As shown, a set of symmetrical guide holes 12 are provided on the side wall of the clamp body 11, and the clamp body 11 is movably installed together with the guide rod 10 through the guide holes 12. The clamp body 11 can be guided to move along the guide rod 10 through the guide holes 12.

[0026] The specific operating principle of clamping mechanism 3 in conjunction with the dry-type transformer is as follows:

[0027] After placing the lower part of the inner core 2 of the dry-type transformer between the symmetrical clamping bodies 11 of a set of symmetrical concave seats 4, the knob 15 located on the outer wall of the lower concave seat 4 is rotated. The knob 15 will drive the first rotating rods 14 installed at both ends of the bidirectional screw 13 to rotate within the first rotating holes 9 opened on the side walls of the set of symmetrical concave seats 4. The first rotating rods 14 will drive the bidirectional screw 13 to rotate, causing the symmetrical movable plates 16 to move relative to each other through the screw holes 17 opened on the side walls along the bidirectional screw 13. At this time, due to the concave blocks 18 installed on the outer walls of the movable plates 16 and the clamping bodies 11, A connecting rod 20 is movably installed, and two symmetrical second rotating rods 21 at both ends of the connecting rod 20 are respectively movably installed in the second rotating holes 19 opened on both sides of the inner wall of the concave block 18. Therefore, as the movable plate 16 is displaced, the second rotating rods 21 will rotate in the second rotating holes 19, and the connecting rod 20 will tilt, causing the angle between the symmetrical connecting rods 20 on the left and right sides to gradually decrease. At this time, driven by the connecting rod 20, the symmetrical clamping bodies 11 will respectively move relative to each other between the symmetrical concave seats 4 through the guide holes 12 opened on the inner wall and along the guide rods 10 until the lower part of the iron core 2 is clamped and fixed. After the clamping bodies 11 are positioned between each other, the knob 15 should be unable to rotate. Then, move the upper set of symmetrical concave seats 4 downwards. During this movement, the threaded short rods 7 installed on the side walls of the upper concave seat 4 will move into the vertical openings 6 on the side plates 5 installed on the sides of the lower concave seat 4 until the upper part of the iron core 2 is positioned between the symmetrical clamping bodies 11 of the upper set of symmetrical concave seats 4. Then, rotate the knob 15 on the outer wall of the upper concave seat 4. The knob 15 will drive the bidirectional screw 13 to rotate through the first rotating rod 14, allowing the symmetrical movable plates 16 to move relative to each other through the screw holes 17 along the bidirectional screw 13. This forces the angle between the symmetrical connecting rods 20 on both sides to change, and drives the symmetrical clamping bodies 11 to move relative to each other, clamping and fixing the upper part of the iron core 2 between the clamping bodies 11. This allows the coil 1 and the iron core 2 to be fixed together by the clamping mechanism 3. By adjusting the distance between the symmetrical clamping bodies 11 and the distance between the upper and lower sets of symmetrical clamping bodies 11, the clamping bodies 11 can achieve the purpose of quickly clamping and fixing iron cores 2 of different thicknesses, and adapt to the clamping and fixing of iron cores 2 in dry-type transformers of different sizes and heights. This not only reduces the cost of using the clamps, but also improves the flexibility and practicality of using the clamps.

[0028] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A high-voltage clamping component for a dry-type transformer, comprising a coil (1) and an iron core (2) disposed within the coil (1), characterized in that: The iron core (2) is provided with a clamping mechanism (3) on its outside. The clamping mechanism (3) includes a concave seat (4), a side plate (5), a clamping body (11), a double screw (13), a movable plate (16), a concave block (18), and a connecting rod (20). The concave seat (4) is provided with two sets of left and right symmetrically arranged. The lower left and right symmetrical concave seat (4) is fixedly connected to the side plates (5) on both sides. The upper left and right symmetrical concave seats (4) are fixedly connected by fastening nuts (8). Between the side plates (5), a set of symmetrical clamp bodies (11) are movably connected between the left and right symmetrical concave seats (4), and the bidirectional screw (13) is movably connected between the concave seats (4) through the first rotating rods (14) at both ends. The two movable plates (16) are movably connected to the bidirectional screw (13) through the screw holes (17) on the side walls, and the connecting rod (20) is movably connected between the movable plate (16) and the clamp body (11) through the second rotating rods (21) at both ends.

2. The high-voltage upper clamp of a dry-type transformer according to claim 1, characterized in that: Side plates (5) are fixedly installed on the front and rear walls of the concave seat (4) symmetrically arranged on the left and right sides below, and a vertical opening (6) is provided on the front wall of the side plate (5). Threaded short rods (7) are fixedly installed on the front and rear walls of the concave seat (4) symmetrically arranged on the left and right sides above, and the threaded short rods (7) are movably installed in the vertical opening (6). The fastening nut (8) is threadedly connected to the threaded short rods (7).

3. The high-voltage upper clamp of a dry-type transformer according to claim 2, characterized in that: The concave seat (4) has a first rotating hole (9) on its side wall, and a guide rod (10) is fixedly installed in the concave seat (4).

4. The high-voltage upper clamp of a dry-type transformer according to claim 3, characterized in that: The left and right ends of the bidirectional screw (13) are respectively fixedly installed with a first rotating rod (14), and the first rotating rod (14) is movably installed in the first rotating hole (9). A knob (15) is also fixedly installed on the outer end of one end of the first rotating rod (14).

5. A high-voltage upper clamp for a dry-type transformer according to claim 4, characterized in that: The movable plate (16) is provided with a set of symmetrical left and right sides, and the side wall of the movable plate (16) is provided with screw holes (17) and is threaded together with the double screw rod (13) through the screw holes (17). The outer side wall of the movable plate (16) and the outer side wall of the clamp body (11) are respectively fixedly installed with concave blocks (18), and the inner walls of the concave blocks (18) are respectively provided with second rotating holes (19) on both sides. The two ends of the connecting rod (20) are respectively fixedly installed with a set of symmetrical second rotating rods (21), and the second rotating rods (21) are movably installed in the second rotating holes (19).

6. The high-voltage upper clamp of a dry-type transformer according to claim 5, characterized in that: The clamp body (11) has a set of symmetrical guide holes (12) on its side wall, and the clamp body (11) is movably installed with the guide rod (10) through the guide holes (12).

Images