Protective device for voltage transformer

Abstract

The utility model discloses a protection device for a voltage transformer, and relates to the technical field of voltage transformer protection. The voltage transformer comprises a base, a voltage transformer body is fixedly installed on the top of the base, U-shaped frames are arranged on the two sides of the base respectively, and a clamping block capable of being adjusted in a steering mode is arranged in each U-shaped frame. The base is clamped through the cooperation of the U-shaped frame, the clamping blocks and the fixing blocks, if the protection device needs to be installed on a cylindrical structure, the two clamping blocks can be rotated by 90 degrees respectively, so that the V-shaped faces of the two clamping blocks are distributed close to each other, and an object of the cylindrical structure can be clamped through the two clamping blocks; then the top cover is rotated to be separated from the protection ring, the protection ring is rotated to adjust the anti-skid pipe to the proper direction, the electric wire penetrates through the interior of the anti-skid pipe to be connected with the connector at the top end of the voltage transformer body, and after the electric wire is connected, the top cover is in threaded connection with the protection ring again.

Description

Technical Field

[0001] This utility model relates to the field of voltage transformer protection technology, specifically to a protection device for voltage transformers. Background Technology

[0002] Voltage transformers are essential electrical devices in power systems, primarily used to convert high voltage to low voltage for measurement, protection, and control. They utilize the principle of electromagnetic induction to proportionally transform the AC voltage on the high-voltage side to the voltage on the low-voltage side, while ensuring electrical isolation between the primary and secondary circuits. Voltage transformers come in various types and structures, including electromagnetic and capacitive types, and are widely used in power grid voltage measurement, power system protection, industrial automation control, and electrical equipment testing.

[0003] The existing announcement number CN220651808U proposes a protective device for voltage transformers, including a voltage transformer body. The top of the voltage transformer body has a mounting groove, and a left protective plate and a right protective plate are movably engaged on the left and right sides of the mounting groove, respectively. However, the above-mentioned protective device for voltage transformers has certain limitations in use. It can only protect voltage transformers of a fixed height and cannot be adjusted according to voltage transformers of different heights. This characteristic greatly limits its application range. Therefore, a protective device for voltage transformers is proposed. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the above-mentioned protective device for voltage transformers cannot be adjusted according to voltage transformers of different heights, which greatly limits its application range. This invention provides a protective device for voltage transformers.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A protective device for a voltage transformer includes a base, on which a voltage transformer body is fixedly mounted. U-shaped frames are provided on both sides of the base. Each U-shaped frame contains an adjustable clamping block, and the top of each clamping block is V-shaped. Square blocks are fixedly mounted on both sides of each U-shaped frame. A bolt is threaded through each pair of corresponding square blocks on the left and right sides. A nut is threaded to the end of each bolt. Two movable fixing blocks are provided on the side of the two U-shaped frames that are close to each other. A telescopic rod assembly with telescopic function is provided on the side wall of the right U-shaped frame. A protective cylinder is provided at the output end of the telescopic rod assembly. The protective cylinder is fitted onto the voltage transformer body. A rotatable protective ring is provided at the top of the protective cylinder. An anti-slip tube is fixedly mounted on the side wall of the protective ring. A top cover is threaded to the top of the protective ring.

[0007] Furthermore, the telescopic rod assembly includes a square tube, a square tube is fixedly installed on the side wall of the right U-shaped frame, a telescopic rod is movably installed inside the square tube, a strip-shaped hole is opened on the side wall of the square tube, a threaded rod is fixedly installed on the side wall of the telescopic rod through the strip-shaped hole, a nut is threaded onto the threaded rod, and the telescopic rod is fixedly connected to the protective cylinder.

[0008] Furthermore, each of the U-shaped frames has grooves at both ends, and each groove has a movable locking block inside. Each locking block is fixedly connected to an adjacent clamping block. Each locking block has a threaded hole at its top, and each groove has a threaded groove at its bottom. Each threaded hole has a bolt connected to it by threads, and the tail end of each bolt is threaded to the interior of an adjacent threaded groove. Each locking block has a threaded hole on its side wall, and each groove has a threaded groove on its bottom.

[0009] Furthermore, convex grooves are respectively provided on the opposite sides of the two U-shaped frames. Two movable blocks are movably installed inside each convex groove. Each movable block is fixedly connected to an adjacent fixed block. A screw rod is fixedly installed on the side wall of each movable block. A nut is threaded onto each screw rod.

[0010] Furthermore, the top of the protective cylinder is provided with an annular groove, and a circular ring is fixedly installed at the bottom of the protective ring, with the circular ring being movably installed inside the annular groove.

[0011] Furthermore, a second ring is fixedly installed on the side wall of the protective cylinder, a C-shaped hole is opened at the top of the second ring, a connecting block is fixedly installed on the side wall of the protective ring, and a threaded rod three that passes through the C-shaped hole is fixedly installed at the bottom of the connecting block, and a nut three is threadedly connected to the threaded rod three.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model first places the protective sleeve on the main body of the voltage transformer. Then, adjust the length of the telescopic rod assembly according to the height of the main body of the voltage transformer. Place two U-shaped frames on both sides of the base. Then, insert two bolts through a set of corresponding square blocks on the left and right sides. Then, thread two nuts to the tail ends of the two bolts. This allows the two U-shaped frames and two clamping blocks to gradually approach and clamp the base. Then, move each fixing block closer to the base. The base is clamped by the cooperation of the U-shaped frames, clamping blocks, and fixing blocks. If the protective device needs to be installed on a cylindrical structure, the two clamping blocks can be rotated 90 degrees respectively, so that the V-shaped surfaces of the two clamping blocks are close to each other. The cylindrical structure can be clamped by the two clamping blocks. Then, rotate the top cover to disengage from the protective ring. After rotating the protective ring to adjust the anti-slip tube to the appropriate orientation, pass the wire through the inside of the anti-slip tube and connect it to the top connector of the voltage transformer main body. After the wire is connected, reconnect the top cover to the protective ring by thread. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a utility model Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 This is a schematic diagram of the clamping block of this utility model;

[0017] Figure 4 This is a utility model Figure 3 Enlarged view of point B in the middle;

[0018] Figure 5 This is a cross-sectional view of the U-shaped frame of this utility model;

[0019] Figure 6 This is a schematic diagram of the explosion of the protective cylinder and protective ring of this utility model;

[0020] Reference numerals in the attached diagram: 1. Base; 2. Voltage transformer body; 3. U-shaped frame; 4. Clamping block; 5. Square block; 6. Bolt 1; 7. Nut; 8. Fixing block; 9. Telescopic rod assembly; 901. Square tube; 902. Telescopic rod; 903. Strip hole; 904. Lead screw 1; 905. Nut 1; 10. Protective cylinder; 11. Protective ring; 12. Anti-slip tube; 13. Groove; 14. Locking block; 15. Threaded hole 1; 16. Threaded groove 1; 17. Bolt 2; 18. Threaded hole 2; 19. Threaded groove 2; 20. Convex groove; 21. Moving block; 22. Lead screw 2; 23. Nut 2; 24. Annular groove; 25. Circular ring 1; 26. Circular ring 2; 27. C-shaped hole; 28. Connecting block; 29. ​​Lead screw 3; 30. Nut 3; 31. Top cover. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] like Figures 1 to 6As shown, a protective device for a voltage transformer includes a base 1, a voltage transformer body 2 fixedly mounted on the top of the base 1, U-shaped frames 3 on both sides of the base 1, and an adjustable clamping block 4 inside each U-shaped frame 3. The top of each clamping block 4 is V-shaped. A square block 5 is fixedly mounted on both sides of each U-shaped frame 3. A bolt 6 passes through each pair of corresponding square blocks 5 on the left and right sides. A nut 7 is threaded to the end of each bolt 6. The two U-shaped frames 3 are close to each other. Two movable fixing blocks 8 are provided on each side. A telescopic rod assembly 9 with telescopic function is provided on the side wall of the right-side U-shaped frame 3. A protective cylinder 10 is provided at the output end of the telescopic rod assembly 9. The protective cylinder 10 is fitted onto the voltage transformer body 2. A rotatable protective ring 11 is provided at the top of the protective cylinder 10. An anti-slip tube 12 is fixedly installed on the side wall of the protective ring 11. A top cover 31 is threadedly connected to the top of the protective ring 11. It should be noted that the protective cylinder 10 is first fitted onto the voltage transformer body 2, and then... Adjust the length of the telescopic rod assembly 9 according to the height of the voltage transformer body 2, and place the two U-shaped frames 3 on both sides of the base 1. Then, insert the two bolts 6 through the corresponding set of square blocks 5 on the left and right sides respectively, and then thread the two nuts 7 to the tail ends of the two bolts 6 respectively, so that the two U-shaped frames 3 and the two clamping blocks 4 gradually approach each other to clamp the base 1. Then, move each fixing block 8 towards the base 1. The base 1 is clamped by the cooperation of the U-shaped frames 3, clamping blocks 4 and fixing blocks 8. If the protective device needs to be installed on a cylindrical structure, the two clamping blocks 4 can be rotated 90 degrees respectively, so that the V-shaped surfaces of the two clamping blocks 4 are close to each other. The cylindrical structure can be clamped by the two clamping blocks 4. Then, rotate the top cover 31 to disengage from the protective ring 11, and rotate the protective ring 11 to adjust the anti-slip tube 12 to the appropriate orientation. Then, pass the wire through the inside of the anti-slip tube 12 and connect it to the top connector of the voltage transformer body 2. After the wire is connected, re-thread the top cover 31 to the protective ring 11.

[0026] like Figure 1 , Figure 2 As shown, the telescopic rod assembly 9 includes a square tube 901. The square tube 901 is fixedly installed on the side wall of the right U-shaped frame 3. The telescopic rod 902 is movably installed inside the square tube 901. A strip hole 903 is opened on the side wall of the square tube 901. A threaded rod 904 passing through the strip hole 903 is fixedly installed on the side wall of the telescopic rod 902. A nut 905 is threaded onto the threaded rod 904. The telescopic rod 902 is fixedly connected to the protective cylinder 10. It should be noted that the length of the telescopic rod assembly 9 can be adjusted according to the height of the voltage transformer body 2, so that the protective cylinder 10 can be adjusted up and down. Specifically, moving the telescopic rod 902 up and down will move the protective cylinder 10 up and down. Then, rotating the nut 905 will fix the telescopic rod 902 at the current height position.

[0027] like Figures 1 to 4 As shown, each U-shaped frame 3 has grooves 13 at both ends, and each groove 13 has a movable locking block 14 inside. Each locking block 14 is fixedly connected to the adjacent clamping block 4. Each locking block 14 has a threaded hole 15 at its top, and each groove 13 has a threaded groove 16 on its inner bottom surface. Each threaded hole 15 has a bolt 17 threadedly connected inside, and the tail end of each bolt 17 is threadedly connected to the interior of the adjacent threaded groove 16. Each locking block 14 has a threaded hole 18 on its side wall. Each groove 13 has a threaded groove 19 on its inner bottom surface. It should be noted that when the V-shaped surface of each clamping block 4 is facing upward, each clamping block 14 is movably installed into the corresponding groove 13. At this time, each bolt 17 is threaded into the threaded hole 15 and the adjacent threaded groove 16. When the V-shaped surfaces of the two clamping blocks 4 are facing each other, each clamping block 14 is movably installed into the corresponding groove 13. At this time, each bolt 17 is threaded into the threaded hole 18 and the adjacent threaded groove 19.

[0028] like Figure 1 , Figure 3 , Figure 5 As shown, two U-shaped frames 3 have convex grooves 20 on their opposite sides. Each convex groove 20 has two movable blocks 21 installed inside. Each movable block 21 is fixedly connected to an adjacent fixed block 8. Each movable block 21 has a screw rod 22 fixedly installed on its side wall. Each screw rod 22 has a nut 23 threadedly connected to it. It should be noted that if it is necessary to clamp a small rectangular base 1, after clamping the base 1 with the cooperation of the U-shaped frame 3 and the clamping block 4, each fixed block 8 can be moved toward the base 1 and fixed at the position closest to the base 1. The fixed blocks 8 can be used to further stabilize and fix the base 1. When each fixed block 8 moves, it can drive the movable block 21 connected to it to move synchronously. Then, rotate each nut 23 to fix all four movable blocks 21 in the current position. At this time, the positions of the four fixed blocks 8 are fixed.

[0029] like Figure 1 , Figure 6 As shown, the top of the protective cylinder 10 is provided with an annular groove 24, and the bottom of the protective ring 11 is fixedly installed with a circular ring 25. The circular ring 25 is movably installed inside the annular groove 24. It should be noted that the rotation of the protective ring 11 can drive the circular ring 25 to rotate inside the annular groove 24. The circular ring 25 and the annular groove 24 can limit the rotational stability of the protective ring 11.

[0030] like Figure 1 , Figure 6As shown, a second ring 26 is fixedly installed on the side wall of the protective cylinder 10. A C-shaped hole 27 is opened at the top of the second ring 26. A connecting block 28 is fixedly installed on the side wall of the protective ring 11. A threaded rod 29 penetrating the C-shaped hole 27 is fixedly installed at the bottom of the connecting block 28. A nut 30 is threadedly connected to the threaded rod 29. It should be noted that when the protective ring 11 rotates, it will drive the connecting block 28 and the threaded rod 29 to move synchronously. The threaded rod 29 will move inside the C-shaped hole 27. After the anti-slip tube 12 is aligned, the nut 30 can be rotated to fix the protective ring 11 at the current angle.

[0031] In summary:

[0032] First, the protective sleeve 10 is fitted onto the voltage transformer body 2. Then, the length of the telescopic rod assembly 9 is adjusted according to the height of the voltage transformer body 2. The two U-shaped frames 3 are placed on both sides of the base 1. The two bolts 6 are then threaded through the corresponding sets of square blocks 5 on the left and right sides. The two nuts 7 are then threaded onto the ends of the two bolts 6, so that the two U-shaped frames 3 and the two clamping blocks 4 gradually move closer to clamp the base 1. Then, each fixing block 8 is moved closer to the base 1. The U-shaped frames 3, clamping blocks 4, and fixing blocks 8 work together to clamp the base 1. The base 1 clamps the device. If the protective device needs to be installed on a cylindrical structure, the two clamping blocks 4 can be rotated 90 degrees respectively, so that the V-shaped surfaces of the two clamping blocks 4 are close to each other. The cylindrical structure can be clamped by the two clamping blocks 4. Then, the top cover 31 is rotated to disengage from the protective ring 11. After the protective ring 11 is rotated to adjust the anti-slip tube 12 to a suitable orientation, the wire is passed through the inside of the anti-slip tube 12 and connected to the top connector of the voltage transformer body 2. After the wire is connected, the top cover 31 is re-threaded to the protective ring 11.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A protective device for a voltage transformer, characterized in that, Includes a base (1), on the top of which a voltage transformer body (2) is fixedly installed. U-shaped frames (3) are respectively installed on both sides of the base (1). Each U-shaped frame (3) has an adjustable clamping block (4) inside. The top of each clamping block (4) is V-shaped. Square blocks (5) are fixedly installed on both sides of each U-shaped frame (3). A bolt (6) is threaded through each pair of corresponding square blocks (5). A nut (7) is threaded onto the end of each bolt (6). The two U-shaped frames... Two movable fixing blocks (8) are provided on the side of the U-shaped frame (3) that are close to each other. A telescopic rod assembly (9) with telescopic function is provided on the side wall of the right U-shaped frame (3). A protective cylinder (10) is provided at the output end of the telescopic rod assembly (9). The protective cylinder (10) is sleeved on the voltage transformer body (2). A rotatable protective ring (11) is provided at the top of the protective cylinder (10). An anti-slip tube (12) is fixedly installed on the side wall of the protective ring (11). A top cover (31) is threadedly connected to the top of the protective ring (11).

2. The protective device for a voltage transformer according to claim 1, characterized in that, The telescopic rod assembly (9) includes a square tube (901), a square tube (901) is fixedly installed on the side wall of the right U-shaped frame (3), a telescopic rod (902) is movably installed inside the square tube (901), a strip hole (903) is opened on the side wall of the square tube (901), a threaded rod (904) passing through the strip hole (903) is fixedly installed on the side wall of the telescopic rod (902), a nut (905) is threaded on the threaded rod (904), and the telescopic rod (902) is fixedly connected to the protective cylinder (10).

3. A protective device for a voltage transformer according to claim 1, characterized in that, Each of the U-shaped frames (3) has a groove (13) at both ends. Each groove (13) has a movable locking block (14) inside. Each locking block (14) is fixedly connected to the adjacent clamping block (4). Each locking block (14) has a threaded hole (15) at the top. Each groove (13) has a threaded groove (16) on the bottom surface inside. Each threaded hole (15) has a bolt (17) threaded inside. The tail end of each bolt (17) is threaded to the interior of the adjacent threaded groove (16). Each locking block (14) has a threaded hole (18) on the side wall. Each groove (13) has a threaded groove (19) on the bottom surface inside.

4. A protective device for a voltage transformer according to claim 1, characterized in that, The two U-shaped frames (3) are provided with convex grooves (20) on their opposite sides. Two movable blocks (21) are movably installed inside each convex groove (20). Each movable block (21) is fixedly connected to the adjacent fixed block (8). A screw rod (22) is fixedly installed on the side wall of each movable block (21). A nut (23) is threaded onto each screw rod (22).

5. A protective device for a voltage transformer according to claim 1, characterized in that, The top of the protective cylinder (10) is provided with an annular groove (24), and a circular ring (25) is fixedly installed at the bottom of the protective ring (11). The circular ring (25) is movably installed inside the annular groove (24).

6. A protective device for a voltage transformer according to claim 1, characterized in that, A second ring (26) is fixedly installed on the side wall of the protective cylinder (10). A C-shaped hole (27) is opened at the top of the second ring (26). A connecting block (28) is fixedly installed on the side wall of the protective ring (11). A screw rod (29) that passes through the C-shaped hole (27) is fixedly installed at the bottom of the connecting block (28). A nut (30) is threaded onto the screw rod (29).

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