Amorphous alloy transformer with iron core tensioning function
By designing clamps and tensioning devices in amorphous alloy transformers, the problem of strong core vibration was solved, resulting in longer transformer lifespan and improved safety.
Patent Information
- Application Number
- CN202511606304.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-05
- Publication Date
- 2026-02-13
AI Technical Summary
The high core vibration intensity of amorphous alloy transformers leads to a shortened service life and poses safety hazards.
An amorphous alloy transformer with core tightening function was designed. The upper clamp, lower clamp and side clamp are tightly tightened by clamping device and tightening device to form multi-directional clamping force, reduce core vibration, and enhance the axial preload of the winding by tie rod and tensioning rod.
It effectively reduces the vibration amplitude of the iron core, extends the service life of the transformer, improves the safety of the windings, and prevents the windings from deforming during short circuits.
Smart Images
Figure CN121528699A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of amorphous alloy dry-type transformer, in particular to an amorphous alloy transformer with core tensioning function. BACKGROUND
[0002] In recent years, amorphous alloy transformer has been rapidly developed due to its outstanding low no-load loss characteristics, and is favored by consumers. However, due to the particularity of the structure of the amorphous alloy transformer, the vibration intensity of the core of the amorphous alloy transformer is stronger than that of the core of the ordinary transformer, which greatly reduces the service life of the transformer and is more prone to accidents.
[0003] When the transformer is short-circuited, the high and low voltage coils will be axially deformed, which not only affects the performance and shortens the service life of the transformer, but also leaves hidden dangers to the safe operation of power facilities. Therefore, the present application provides an amorphous alloy transformer with core tensioning function. SUMMARY
[0004] The purpose of the present application is to provide an amorphous alloy transformer with core tensioning function to solve the problem of obvious core vibration in the background art.
[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: An amorphous alloy transformer with core tensioning function, comprising a clamping device, a plurality of windings, a transformer main body and a plurality of tensioning devices; the clamping device comprises an upper clamping piece, a lower clamping piece and a pair of side clamping pieces; the upper clamping piece and the lower clamping piece are respectively arranged at the top and bottom of the transformer main body for clamping the top and bottom of the transformer main body; the pair of side clamping pieces are arranged on both sides of the transformer main body for clamping the side of the transformer main body; a plurality of pull rods and at least one pair of tensioning devices are arranged on both sides of the transformer main body; the two ends of the pull rod are respectively fixedly connected with the upper clamping piece and the lower clamping piece; the upper end of the tensioning device is fixedly connected with the upper part of the upper clamping piece and the adjacent side clamping piece, and the lower end is fixedly connected with the lower clamping piece and the lower part of the adjacent side clamping piece; the tensioning device has a tensioning function at the center, which can tension the upper clamping piece, the lower clamping piece and the side clamping piece connected with the two ends of the tensioning device towards the center of the tensioning device, so as to further compress the transformer main body.
[0006] Preferably, the transformer main body comprises a plurality of windings and a plurality of cores, and the core is of a frame structure, each winding being sleeved on the vertical part of a pair of adjacent cores.
[0007] Preferably, the upper clamping piece and the lower clamping piece respectively extend a pair of upper pull plates and a pair of lower pull plates on both sides, and the upper and lower parts of the side clamping piece respectively extend a pair of side pull plates; the side pull plates of the upper part and the lower part of the side clamping piece are flush with the corresponding upper pull plates and lower pull plates in the horizontal direction; the two ends of the pull rod are fixedly connected with the upper pull plates and the lower pull plates.
[0008] Preferably, the tensioning device includes two pairs of tensioning rods, a limiting plate, and a pair of tensioning members; the limiting plate has a pair of first sliding grooves and rotating grooves that are symmetrical about the center, and the first sliding grooves and rotating grooves are adjacent to each other; one pair of tensioning rods are slidably connected in the pair of first sliding grooves, and the other pair of tensioning rods are disposed in the pair of rotating grooves; each tensioning member is disposed at the opposite end of the pair of tensioning rods and is used to drive the pair of tensioning rods to move towards each other.
[0009] Preferably, the ends of one pair of tensioning rods away from the tensioning member are respectively fixedly connected to the upper pull plate and the lower side pull plate of the side clamp, and the ends of the other pair of tensioning rods away from the tensioning member are respectively fixedly connected to the lower pull plate and the upper side pull plate of the side clamp; by moving each pair of tensioning rods in opposite directions, the upper clamp, lower clamp and side clamp connected to the corresponding tensioning rods are pulled in opposite directions. Preferably, the tensioning device further includes a guide plate; the guide plate is rotatably connected to the center of the limiting plate, and the guide plate has a pair of second sliding grooves, which are symmetrical along the center of the limiting plate and have a width that matches the tensioning rods; another pair of tensioning rods pass through the rotating groove and are slidably connected to the second sliding grooves. Preferably, the opposite ends of each pair of tensioning rods are bent into an L-shape; the bent portion is slidably connected in the first groove or slidably connected in the second groove through the rotating groove.
[0010] Preferably, the tensioning element includes a screw, a rotating rod, and a threaded cylinder; the bent end of one of the pair of tensioning rods is fixedly connected to the screw, the rotating rod passes through the bent end of the other tensioning rod, the end of the rotating rod near the screw is fixedly connected to the threaded cylinder for threaded connection with the screw, and the end of the rotating rod away from the screw is fixedly connected to a rotating cap.
[0011] Preferably, the tensioning device further includes a pair of limiting members disposed on both sides of the guide plate; the limiting members include a fixed cylinder and an abutment rod; the fixed cylinder is inclined and extends towards the upper and lower sides of the middle of the guide plate along the extension line formed by the pair of fixed cylinders, and the abutment rod passes through the fixed cylinder and is threadedly connected to the fixed cylinder, for rotating to abut against the side of the guide plate.
[0012] Preferably, each tension rod has an extension tube threadedly connected to the outer wall of its end away from the bend, and a fixing plate is rotatably connected to the end of the extension tube away from the tension rod; the fixing plate is used to fix it to the upper pull plate, lower pull plate, or side pull plate.
[0013] Compared with the prior art, the beneficial effects of the present invention are: This application incorporates a tensioning device that tightly tightens the upper clamp, lower clamp, and side clamp via a tensioning rod, exerting multi-directional pressure on the core, thereby significantly reducing the vibration amplitude of the core during operation; reducing the weakening of structural strength caused by vibration, thus extending the service life of the transformer.
[0014] The tension force generated by the pull rod and the tension rod also acts on the winding indirectly through the iron core, thereby enhancing the axial pre-tightening force of the winding; meanwhile, the tension rod also acts the tension force on the side surface of the winding through the tension side clamping piece, effectively preventing the winding from deforming when the coil is short-circuited, and improving the safety.
[0015] The adaptability is high, the included angle between the pull rods can be adjusted according to different specifications of the transformer, so that the best tensioning effect is achieved. Through the cooperation of the guide plate, the rotating groove and the limiting disc, the included angle of the pull rod can be flexibly adjusted to match different transformers, so that the tensioning effect is fully exerted. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 The figure is a structural schematic diagram of the present application; Figure 2 The figure is a structural exploded view of the connection between the upper clamping piece and the iron core of the present application; Figure 3 The figure is a structural schematic diagram of the tensioning device of the present application; Figure 4 The figure is a structural schematic diagram of the connection between the tension rod and the first sliding groove of the present application; Figure 5 The figure is a structural schematic diagram of the connection between the guide plate and the limiting disc of the present application; Figure 6 The figure is a structural schematic diagram of the connection between the tensioning piece and the tension rod of the present application; Figure 7 The figure is a structural schematic diagram of the connection between the threaded cylinder and the screw rod of the present application; Figure 8 The figure is a structural schematic diagram of the side of the limiting disc away from the rotating rod of the present application; Figure 9 The figure is a structural schematic diagram of the connection between the extension cylinder and the fixed plate of the present application.
[0017] In the figure: clamping device 1, upper clamping piece 11, upper pull plate 111, lower clamping piece 12, lower pull plate 121, side clamping piece 13, side pull plate 131, winding 2, iron core 3, pull rod 4, tensioning device 5, tension rod 51, extension cylinder 511, fixed plate 512, limiting disc 52, first sliding groove 521, rotating groove 522, tensioning piece 53, screw rod 531, rotating rod 532, threaded cylinder 533, rotating cover 534, guide plate 54, second sliding groove 541, limiting piece 55, fixed cylinder 551, abutting rod 552. DETAILED DESCRIPTION
[0018] Example 1:
[0019] Please refer to Figures 1-8 The present application provides a technical solution: as Figures 1-2As shown, an amorphous alloy transformer with core tensioning function comprises a clamping device 1, a plurality of windings 2, a plurality of cores 3, a plurality of pull rods 4 and a plurality of tensioning devices 5; the core 3 is of frame structure, each winding 2 is sleeved on the vertical part of a pair of adjacent cores 3; the plurality of windings 2 and the plurality of cores 3 constitute the main body of the transformer. The clamping device 1 comprises an upper clamp 11, a lower clamp 12 and a pair of side clamps 13; the upper clamp 11 and the lower clamp 12 are respectively arranged at the top and bottom of the core 3, for clamping the top and bottom of the core 3; a pair of side clamps 13 are arranged on both sides of the main body of the transformer, for clamping the side of the core 3. A plurality of pull rods 4 and at least a pair of tensioning devices 5 are arranged on both sides of the core 3; the two ends of the pull rod 4 are respectively fixedly connected with the upper clamp 11 and the lower clamp 12; the upper end of the tensioning device 5 is fixedly connected with the upper clamp 11 and the upper part of the adjacent side clamp 13, and the lower end is fixedly connected with the lower clamp 12 and the lower part of the adjacent side clamp 13; the tensioning device 5 has a tensioning function at the center, which can tension the upper clamp 11, the lower clamp 12 and the side clamp 13 connected with the two ends of the tensioning device 5 towards the center of the tensioning device 5, so as to further compress the core 3 and the winding 2.
[0020] The upper clamp 11 and the lower clamp 12 respectively extend a pair of upper pull plates 111 and a pair of lower pull plates 121 on both sides, and the upper and lower parts of the side clamp 13 respectively extend a pair of side pull plates 131 on both sides. The side pull plate 131 on the upper part of the side clamp 13 is flush with the corresponding upper pull plate 111 in the horizontal direction, and the side pull plate 131 on the lower part of the side clamp 13 is flush with the corresponding lower pull plate 121 in the horizontal direction. The two ends of the pull rod 4 are respectively fixedly connected with the upper pull plate 111 and the lower pull plate 121.
[0021] As shown, Figures 3-8 The tensioning device 5 comprises two pairs of tensioning rods 51, a limiting disc 52 and a pair of tensioning pieces 53; the limiting disc 52 is provided with a pair of first sliding grooves 521 and a rotating groove 522 which are symmetrically arranged at the center, and the first sliding grooves 521 and the rotating groove 522 are adjacent; one pair of tensioning rods 51 are correspondingly and slidably connected in the pair of first sliding grooves 521, and the other pair of tensioning rods 51 are arranged in the pair of rotating grooves 522; each tensioning piece 53 is arranged at the opposite end of the pair of tensioning rods 51, for driving the pair of tensioning rods 51 to move towards each other.
[0022] The ends of one pair of tensioning rods 51 away from the tensioning piece 53 are respectively fixedly connected with the upper pull plate 111 and the side pull plate 131 on the lower part of the side clamp 13, and the ends of the other pair of tensioning rods 51 away from the tensioning piece 53 are respectively fixedly connected with the lower pull plate 121 and the side pull plate 131 on the upper part of the side clamp 13; each pair of tensioning rods 51 can be interchangeably connected; the upper clamp 11, the lower clamp 12 and the side clamp 13 connected with the tensioning rods 51 are tensioned towards each other by the movement of each pair of tensioning rods 51.
[0023] The first sliding groove 521 is rectangular in cross section, and the width thereof is matched with the diameter of the tension rod 51, so as to guide the movement of the tension rod 51. The rotating groove 522 is sector-shaped in cross section, and is used for adjusting the included angle between adjacent tension rods 51.
[0024] The tension device 5 further comprises a guide plate 54, the middle portion of the guide plate 54 is rotationally connected to the middle portion of the limiting disc 52, the guide plate 54 is provided with a pair of second sliding grooves 541, the second sliding grooves 541 are symmetrically arranged on the middle portion of the limiting disc 52, and the other pair of tension rods 51 are slidingly connected to the second sliding grooves 541 through the rotating grooves 522. The second sliding grooves 541 are rectangular in cross section, and the width thereof is matched with the diameter of the tension rod 51, so as to guide the movement of the tension rod 51.
[0025] The opposite ends of each pair of tension rods 51 are bent into L-shaped, and the bent portions are slidingly connected to the first sliding grooves 521 or the second sliding grooves 541 through the rotating grooves 522.
[0026] The tension member 53 comprises a screw rod 531, a rotating rod 532 and a threaded cylinder 533, the bent end of one of the tension rods 51 is fixedly connected to the screw rod 531, the rotating rod 532 penetrates through the bent end of the other tension rod 51, the end of the rotating rod 532 close to the screw rod 531 is fixedly connected to the threaded cylinder 533, the threaded cylinder 533 is used for being threadedly connected to the screw rod 531, and the end of the rotating rod 532 away from the screw rod 531 is fixedly connected to a rotating cover 534. The screw rod 531, the rotating rod 532 and the threaded cylinder 533 are coaxially arranged, and are coaxial with the corresponding tension rod 51. The lengths of the screw rod 531, the rotating rod 532 and the threaded cylinder 533 are greater than the distance between the opposite ends of the pair of tension rods 51. By rotating the threaded cylinder 533 to be threadedly connected to the screw rod 531, the screw rod 531 and the rotating rod 532 are close to each other, and then the corresponding tension rod 51 is driven to be close to each other, so as to realize the tensioning effect. Preferably, a groove matched with an electric device (such as an electric drill) can be formed on the rotating cover 534, the electric device is inserted into the groove to drive the rotating rod 532 to rotate, so as to realize the thread connection and tensioning, and the operation difficulty is reduced.
[0027] The tension device 5 further comprises a pair of parallel limiting members 55, each limiting member 55 is arranged on the limiting disc 52 between the adjacent first sliding groove 521 and the rotating groove 522. The limiting member 55 comprises a fixed cylinder 551 and an abutting rod 552, and the fixed cylinder 551 is fixedly connected to the limiting disc 52. The fixed cylinder 551 is obliquely arranged, and the extension line formed by the pair of fixed cylinders 551 is directed to the upper side and the lower side of the middle portion of the guide plate 54. The abutting rod 552 penetrates through the fixed cylinder 551 and is threadedly connected to the fixed cylinder 551, and is moved to the direction of the guide plate 54 by rotating the abutting rod 552, until the end of the abutting rod 552 abuts against the side surface of the guide plate 54, so as to limit the rotation of the guide plate 54 and improve the stability.
[0028] The operation method of tensioning: taking one pair of tensioning rods 51 as an example: first, the worker places the bent end of the tensioning rod 51 in the first sliding groove 521 or the second sliding groove 541, then fixes the other end of the tensioning rod 51 with the corresponding upper clamping plate 111 and the side clamping plate 131 at the lower part of the side clamping piece 13, then rotates the rotating rod 532, which drives the threaded cylinder 533 to rotate while being in threaded connection with the screw rod 531, so as to reduce the distance between the opposite ends of the pair of tensioning rods 51, realize the effect of tensioning, and thus tension the corresponding upper clamping piece 11 and side clamping piece 13, and further compress the iron core 3. The other pair of tensioning rods 51 is fixedly connected with the lower clamping plate 121 and the side clamping plate 131 at the upper part of the side clamping piece 13, so that the two pairs of tensioning rods 51 are arranged in a crisscross manner, and the remaining operation method is the same as above. Through the tensioning of the two pairs of tensioning rods 51, the upper clamping piece 11 and the lower clamping piece 12 are tensioned, and at the same time, the side clamping piece 13 is also tensioned, and then the corresponding iron core 3 and winding 2 of the upper clamping piece 11, lower clamping piece 12 and side clamping piece 13 are further compressed, so as to reduce the vibration of the iron core 3 and avoid the deformation of the winding 2.
[0029] Finally, the abutting rod 552 is rotated, so that the ends of the pair of abutting rods 552 are in contact with the two sides of the guide plate 54, further limiting the rotation of the guide plate 54, so as to improve the stability of the structure.
[0030] Embodiment 2
[0031] On the basis of embodiment 1, as shown in Figure 9 The outer wall of the end of each tensioning rod 51 away from the bent end is further threaded with an extension cylinder 511, the end of the extension cylinder 511 away from the tensioning rod 51 is rotatably connected with a fixing plate 512, and the fixing plate 512 is used for fixedly connecting with the upper clamping plate 111 or the lower clamping plate 121 or the side clamping plate 131. The length of the tensioning rod 51 is changed through the rotation of the extension cylinder 511, so as to adapt to different specifications of transformers. Specifically, the distance between adjacent tensioning rods 51 is first determined, the fixing plate 512 is then fixedly connected with the corresponding upper clamping plate 111 or lower clamping plate 121 or side clamping plate 131, and then the extension cylinder 511 is rotated, so that the bent end of the tensioning rod 51 is placed in the first sliding groove 521 or the second sliding groove 541. The tensioning rod 51 connected with different specifications of transformers will form different clamping angles. If the clamping angle increases, the tensioning rod 51 located in the rotating groove 522 will rotate away from the adjacent first sliding groove 521, and drive the guide plate 54 to rotate, and then tensioning is performed, and the tensioning method is the same as above.
Claims
1. An amorphous alloy transformer with core tensioning function, characterized in that: The transformer body includes a clamping device (1), multiple windings (2), a transformer body, and multiple tensioning devices (5). The clamping device (1) includes an upper clamp (11), a lower clamp (12), and a pair of side clamps (13). The upper clamp (11) and the lower clamp (12) are respectively located at the top and bottom of the transformer body for clamping the top and bottom of the transformer body. The pair of side clamps (13) are located on both sides of the transformer body for clamping the sides of the transformer body. Multiple pull rods (4) and at least one pair of tensioning devices are provided on both sides of the transformer body. Tightening device (5); the upper clamp (11) and lower clamp (12) are fixedly connected to both ends of the pull rod (4); the upper end of the tightening device (5) is fixedly connected to the upper clamp (11) and the upper part of the adjacent side clamp (13), and the lower end is fixedly connected to the lower clamp (12) and the lower part of the adjacent side clamp (13). The center of the tightening device (5) has a tightening function, which can tighten the upper clamp (11), lower clamp (12) and side clamp (13) connected to both ends of the tightening device (5) toward the center of the tightening device (5), thereby further pressing the transformer body.
2. An amorphous alloy transformer with core tensioning function according to claim 1, characterized in that: The transformer body includes multiple windings (2) and multiple iron cores (3). The iron cores (3) are frame structures, and each winding (2) is fitted on the vertical part of a pair of adjacent iron cores (3).
3. An amorphous alloy transformer with core tensioning function according to claim 1, characterized in that: The upper clamp (11) and the lower clamp (12) have a pair of upper pull plates (111) and a pair of lower pull plates (121) extending from their respective sides. The upper and lower parts of the side clamp (13) have a pair of side pull plates (131) extending from their respective sides. The side pull plates (131) at the upper and lower parts of the side clamp (13) are flush with the corresponding upper pull plates (111) and lower pull plates (121) in the horizontal direction. The two ends of the pull rod (4) are fixedly connected to the upper pull plates (111) and the lower pull plates (121) respectively.
4. An amorphous alloy transformer with core tensioning function according to claim 3, characterized in that: The tensioning device (5) includes two pairs of tensioning rods (51), a limiting plate (52), and a pair of tensioning members (53); the limiting plate (52) has a pair of centrally symmetrical first sliding grooves (521) and rotating grooves (522), which are adjacent to each other; one pair of tensioning rods (51) are slidably connected in the pair of first sliding grooves (521), and the other pair of tensioning rods (51) are set in the pair of rotating grooves (522); each tensioning member (53) is set at the opposite end of the pair of tensioning rods (51) and is used to drive the pair of tensioning rods (51) to move towards each other.
5. An amorphous alloy transformer with core tensioning function according to claim 4, characterized in that: One pair of tensioning rods (51) are fixedly connected to the upper pull plate (111) and the lower side pull plate (131) of the side clamp (13) respectively at the ends away from the tensioning member (53), and the other pair of tensioning rods (51) are fixedly connected to the lower pull plate (121) and the upper side pull plate (131) of the side clamp (13) respectively at the ends away from the tensioning member (53). By moving each pair of tensioning rods (51) towards each other, the upper clamp (11), lower clamp (12) and side clamp (13) connected to the tensioning rods (51) are pulled towards each other.
6. An amorphous alloy transformer with core tensioning function according to claim 4, characterized in that: The tensioning device (5) also includes a guide plate (54); the guide plate (54) is rotatably connected to the middle of the limiting plate (52), and the guide plate (54) has a pair of second slide grooves (541). The second slide grooves (541) are symmetrical along the middle of the limiting plate (52) and their width matches that of the tensioning rods (51). Another pair of tensioning rods (51) pass through the rotating groove (522) and are slidably connected in the second slide grooves (541).
7. An amorphous alloy transformer with core tensioning function according to claim 6, characterized in that: Each pair of tension rods (51) has its opposite ends bent into an L-shape; the bent portion is slidably connected in the first groove (521) or slidably connected in the second groove (541) through the rotating groove (522).
8. An amorphous alloy transformer with core tensioning function according to claim 4, characterized in that: The tensioning component (53) includes a screw (531), a rotating rod (532), and a threaded cylinder (533); the bent end of one of the pair of tensioning rods (51) is fixedly connected to the screw (531), the rotating rod (532) passes through the bent end of the other tensioning rod (51), the end of the rotating rod (532) near the screw (531) is fixedly connected to the threaded cylinder (533) for threaded connection with the screw (531), and the end of the rotating rod (532) away from the screw (531) is fixedly connected to a rotating cap (534).
9. An amorphous alloy transformer with core tensioning function according to claim 6, characterized in that: The tensioning device (5) also includes a pair of limiting members (55) disposed on both sides of the guide plate (54); the limiting member (55) includes a fixed cylinder (551) and an abutment rod (552); the fixed cylinder (551) is inclined and extends towards the upper and lower sides of the middle of the guide plate (54) along the extension line formed by the pair of fixed cylinders (551); the abutment rod (552) passes through the fixed cylinder (551) and is threadedly connected to the fixed cylinder (551) for rotating and moving to abut against the side of the guide plate (54).
10. An amorphous alloy transformer with core tensioning function according to claim 4, characterized in that: Each tension rod (51) has an extension tube (511) threadedly connected to the outer wall of its end away from the bend end. The extension tube (511) is rotatably connected to a fixing plate (512) at its end away from the tension rod (51). The fixing plate (512) is used to fix it to the upper pull plate (111), the lower pull plate (121), or the side pull plate (131).