Transformer winding drying constant-voltage device

Abstract

The utility model discloses a transformer winding drying constant pressure device which comprises a supporting frame and driving motors, the upper end and the lower end of the supporting frame are each provided with a plurality of sets of driving motors at equal intervals, the output ends of the driving motors are each provided with a threaded rod, and the threaded rods are movably connected with the supporting frame. The surface of each threaded rod is sleeved with a threaded sleeve, the threaded sleeves are in threaded connection with the threaded rods, the threaded sleeves are slidably connected with the supporting frame, connecting arms are installed on the side walls of the threaded sleeves, upper linkage shafts are installed at the ends, close to the threaded sleeves, of the connecting arms, and the connecting arms are movably connected with the threaded sleeves through the upper linkage shafts. According to the device, the inside and the outside of the transformer winding can be conveniently dried in a surrounding mode, the transformer winding with different outer diameters can be conveniently pulled to be matched, the transformer windings with different inner diameters can be conveniently clamped and fixed in a matched mode, and the blowing drying effect and uniformity are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drying constant pressure devices, and particularly relates to a drying constant pressure device for transformer windings. Background Technique

[0002] The transformer winding refers to the circuit part of the transformer, which is wound by copper wires or aluminum wires with high conductivity. It is applied to the power system. The winding should have sufficient insulation strength, mechanical strength and heat resistance. The winding is usually divided into two types: layer type and pancake type. The turns of the winding are arranged continuously along its axial direction. The winding is called a layer type winding. Generally, each layer of the layer type winding is like a cylinder. Therefore, the winding composed of two layers is called a double-layer cylindrical type, and the one composed of multiple layers is called a multi-layer cylindrical type. When the transformer winding is affected by moisture, its operation will be affected and it needs to be dried. In order to better dry the transformer winding, a drying constant pressure device for transformer windings is proposed.

[0003] As disclosed in a drying constant pressure device for transformer windings with the authorization announcement number CN218627519U, it includes a bottom box and a drying component arranged on one side of the bottom box for drying the transformer winding. The drying component includes: a bottom frame fixedly connected to the bottom box, a driving member arranged on one side of the bottom frame, and a screw rod fixedly connected to the output end of the driving member. The screw rod is rotatably connected to the bottom frame, a moving sleeve connected to the screw rod through threads, a rotating rod, one side of which is rotatably connected to the moving sleeve, and the other side is rotatably connected to a drying plate. A connecting block is arranged on one side of the drying plate;

[0004] Although it realizes that by setting the auxiliary component, the drying ability of the device is stronger. In this embodiment, by combining the drying component and the auxiliary component, the device can dry the transformer winding, with good drying effect and more suitable for popularization and use;

[0005] However, it does not solve the problem that the existing drying constant pressure device is not convenient for circumferentially drying the inside and outside of the transformer winding conveniently and for conveniently pulling and adapting to transformer windings with different outer diameters, and is not conducive to adapting and clamping and fixing transformer windings with different inner diameters, which affects the blowing drying effect and uniformity. Content of the Utility Model

[0006] The purpose of the utility model is to provide a drying constant pressure device for transformer windings to solve the problems proposed in the above background technique that the drying constant pressure device is not convenient for circumferentially drying the inside and outside of the transformer winding conveniently and for conveniently pulling and adapting to transformer windings with different outer diameters, and is not conducive to adapting and clamping and fixing transformer windings with different inner diameters, which affects the blowing drying effect and uniformity.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A constant voltage device for drying a transformer winding, comprising a support frame and a driving motor. At both the upper and lower ends of the support frame, a plurality of groups of driving motors are installed at equal intervals. The output ends of the driving motors are all installed with threaded rods, and the threaded rods are movably connected to the support frame. Threaded sleeves are sleeved on the surfaces of the threaded rods, and the threaded sleeves are threadedly connected to the threaded rods and are slidably connected to the support frame. Connecting arms are installed on the side walls of the threaded sleeves. At one end of each connecting arm close to the threaded sleeve, an upper linkage shaft is installed, and the connecting arm is movably connected to the threaded sleeve through the upper linkage shaft. On the side walls of the support frame on one side of the driving motor, rotating arms are installed. At one end of each rotating arm close to the support frame, a rotating shaft is installed, and the rotating arm is movably connected to the support frame through the rotating shaft. At the other end of each connecting arm away from the threaded sleeve, a lower linkage shaft is installed, and the connecting arm is movably connected to the rotating arm through the lower linkage shaft. At the other end of each rotating arm away from the support frame, an arc-shaped block is fixedly installed. On the outer wall of the support frame, a plurality of groups of placing plates are installed at equal intervals. Inner fans are installed on the side walls of the placing plates. A rotating seat is installed inside the support frame.

[0008] Preferably, a servo motor is installed inside the rotating seat, and a worm is installed at the output end of the servo motor.

[0009] Preferably, a rotating shaft is movably installed inside the rotating seat on one side of the worm, and the rotating shaft extends to the outside of the rotating seat.

[0010] Preferably, a worm gear is sleeved on the surface of the rotating shaft, and the worm gear meshes with the worm.

[0011] Preferably, connecting arms are symmetrically installed at the top end of the rotating shaft. Transverse telescopic arms are slidably installed inside the connecting arms. Upper locking pins are installed at the top ends of the connecting arms, and the upper locking pins penetrate through the connecting arms and extend to the surfaces of the transverse telescopic arms.

[0012] Preferably, load-carrying arms are installed at the other ends of the transverse telescopic arms away from the connecting arms. Vertical telescopic arms are slidably installed inside the load-carrying arms. Side locking pins are installed on the side walls of the load-carrying arms, and the side locking pins penetrate through the load-carrying arms and extend to the surfaces of the vertical telescopic arms.

[0013] Preferably, electric push rods are installed on the side walls of the vertical telescopic arms, and arc-shaped clamps are installed at the output ends of the electric push rods.

[0014] Preferably, outer fans are installed on the side walls of the vertical telescopic arms on both sides of the electric push rods, and an outer fan is also installed on the side wall of the load-carrying arm above the electric push rod.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: This drying constant pressure device not only realizes convenient circumferential drying treatment of the inside and outside of the transformer winding and convenient pulling and adapting to transformer windings with different outer diameters, facilitating the adaptation, clamping and fixing of transformer windings with different inner diameters, but also improves the effect and uniformity of blowing drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structure schematic diagram of the present utility model;

[0017] Figure 2 is a three-dimensional structure schematic diagram of the support frame of the present utility model;

[0018] Figure 3 is a three-dimensional structure schematic diagram of the arc block of the present utility model;

[0019] Figure 4 is a front view sectional structure schematic diagram of the rotating seat of the present utility model;

[0020] Figure 5 is a three-dimensional structure schematic diagram of the carrying arm of the present utility model.

[0021] In the figure: 1. connecting arm; 2. horizontal telescopic arm; 3. carrying arm; 4. vertical telescopic arm; 5. rotating shaft; 6. rotating seat; 7. support frame; 8. placing plate; 9. inner fan; 10. servo motor; 11. worm; 12. worm gear; 13. threaded sleeve; 14. driving motor; 15. rotating arm; 16. lower linkage shaft; 17. arc block; 18. rotating shaft; 19. connecting arm; 20. upper linkage shaft; 21. threaded rod; 22. upper locking pin; 23. side locking pin; 24. outer fan; 25. electric push rod; 26. arc clamp. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5, an embodiment provided by the present utility model: a constant voltage device for drying a transformer winding, comprising a support frame 7 and a driving motor 14. A plurality of groups of driving motors 14 are installed at equal intervals at the upper and lower ends of the support frame 7. The driving motors 14 play a role in power driving. The output ends of the driving motors 14 are all installed with threaded rods 21, and the threaded rods 21 are movably connected to the support frame 7. Threaded sleeves 13 are sleeved on the surfaces of the threaded rods 21, and the threaded sleeves 13 are threadedly connected to the threaded rods 21, and the threaded sleeves 13 are slidably connected to the support frame 7. Connecting arms 19 are installed on the side walls of the threaded sleeves 13. Upper linkage shafts 20 are installed at the ends of the connecting arms 19 close to the threaded sleeves 13, and the connecting arms 19 are movably connected to the threaded sleeves 13 through the upper linkage shafts 20. Rotating arms 15 are installed on the side walls of the support frame 7 on one side of the driving motors 14. Rotating shafts 18 are installed at the ends of the rotating arms 15 close to the support frame 7, and the rotating arms 15 are movably connected to the support frame 7 through the rotating shafts 18. Lower linkage shafts 16 are installed at the ends of the connecting arms 19 away from the threaded sleeves 13, and the connecting arms 19 are movably connected to the rotating arms 15 through the lower linkage shafts 16. Arc-shaped blocks 17 are fixedly installed at the ends of the rotating arms 15 away from the support frame 7. A plurality of groups of placement plates 8 are installed at equal intervals on the outer wall of the support frame 7. Inner fans 9 are installed on the side walls of the placement plates 8. A rotating seat 6 is installed inside the support frame 7;

[0024] First, place the support frame 7 inside the transformer winding, connect the device to an external controller and external circuit, turn on the drive motor 14. The drive motor 14 drives the threaded rod 21 to rotate. Under the threaded connection between the threaded rod 21 and the threaded sleeve 13, and the sliding fit between the threaded sleeve 13 and the support frame 7, the threaded rod 21 drives the threaded sleeve 13 to move. The threaded sleeve 13 drives the connecting arm 19 to rotate through the upper linkage shaft 20. The connecting arm 19 drives the rotating arm 15 to rotate around the rotating shaft 18 through the lower linkage shaft 16. The rotating arm 15 drives the arc-shaped block 17 to rotate, so that multiple arc-shaped blocks 17 contact the inner wall of the transformer winding, and the support frame 7 is fixed inside the transformer winding under the cooperation of multiple arc-shaped blocks 17. If the inner diameter of the transformer winding is different, the rotation amount of the rotating arm 15 can be controlled to adapt to transformer windings with different inner diameters. Then, turn on the servo motor 10. The servo motor 10 drives the worm 11 to rotate. Under the mutual meshing of the worm 11 and the worm gear 12, the worm 11 drives the worm gear 12 to rotate. The worm gear 12 drives the rotating shaft 5 to rotate. The rotating shaft 5 drives the connecting arm 1, the horizontal telescopic arm 2, the bearing arm 3, the vertical telescopic arm 4, and the external fan 24 to rotate. Turn on the external fan 24, and the external fan 24 blows air to dry the outside of the transformer winding. After the external drying is completed, the servo motor 10 pauses working. Then, turn on the electric push rod 25. The electric push rod 25 drives the arc-shaped clamp 26 to move, so that the two arc-shaped clamps 26 contact the outer wall of the transformer winding, and the vertical telescopic arm 4 is fixed on the outer wall of the transformer winding under the joint action of the two arc-shaped clamps 26. Then, turn off the drive motor 14 to reset the arc-shaped block 17, so that the support frame 7 is suspended inside the transformer winding. Then, turn on the servo motor 10. Since the limit fixing position has changed at this time, the rotating seat 6 and the support frame 7 rotate with the rotating shaft 5. The support frame 7 drives the internal fan 9 to rotate inside the transformer winding. Turn on the internal fan 9, and the internal fan 9 blows air to dry the inside of the transformer winding, thus completing the drying operation of the transformer winding, realizing convenient circumferential drying treatment of the inside and outside of the transformer winding, facilitating the adaptation and clamping fixation of transformer windings with different inner diameters, and improving the effect of blowing and drying;

[0025] A servo motor 10 is installed inside the rotating seat 6. The servo motor 10 plays a role in power driving. The output end of the servo motor 10 is installed with a worm 11. A rotating shaft 5 is movably installed inside the rotating seat 6 on one side of the worm 11, and the rotating shaft 5 extends to the outside of the rotating seat 6;

[0026] A worm gear 12 is sleeved on the surface of the rotating shaft 5, and the worm gear 12 meshes with the worm 11. Connecting arms 1 are symmetrically installed at the top of the rotating shaft 5. Horizontal telescopic arms 2 are slidably installed inside the connecting arms 1. Upper locking pins 22 are installed at the tops of the connecting arms 1, and the upper locking pins 22 penetrate through the connecting arms 1 and extend to the surfaces of the horizontal telescopic arms 2;

[0027] At one end of the lateral telescopic arm 2 away from the connecting arm 1, a bearing arm 3 is installed. Inside the bearing arm 3, a vertical telescopic arm 4 is slidably installed. On the side wall of the bearing arm 3, a side locking pin 23 is installed, and the side locking pin 23 penetrates through the bearing arm 3 and extends to the surface of the vertical telescopic arm 4;

[0028] On the side wall of the vertical telescopic arm 4, an electric push rod 25 is installed. The electric push rod 25 plays a role in power driving. At the output end of the electric push rod 25, an arc-shaped clamp 26 is installed;

[0029] On the side walls of the vertical telescopic arm 4 on both sides of the electric push rod 25, an external fan 24 is installed, and on the side wall of the bearing arm 3 above the electric push rod 25, an external fan 24 is also installed;

[0030] If the outer diameters of the transformer windings are different, loosen the upper locking pin 22 to separate the connecting arm 1 and the lateral telescopic arm 2. Pull the lateral telescopic arm 2 to make the lateral telescopic arm 2 slide inside the connecting arm 1. The lateral telescopic arm 2 drives the bearing arm 3, the vertical telescopic arm 4 and the external fan 24 to move, so that the two groups of bearing arms 3 and vertical telescopic arms 4 are separated from each other, so as to adapt to transformer windings with different outer diameters. Then tighten the upper locking pin 22. In order to make the blowing range more uniform, loosen the side locking pin 23 to separate the bearing arm 3 and the vertical telescopic arm 4. Pull the vertical telescopic arm 4 to make the vertical telescopic arm 4 slide inside the bearing arm 3. The vertical telescopic arm 4 drives the external fan 24 to move, so that the distances between the three groups of vertical telescopic arms 4 are more uniform, realizing convenient pulling and adapting to transformer windings with different outer diameters, and improving the uniformity of blowing and drying.

[0031] Working principle: First, place the support frame 7 inside the transformer winding, connect the device to an external controller and external circuit. Drive the threaded rod 21 to rotate by the drive motor 14, drive the threaded sleeve 13 to move by the threaded rod 21, drive the connecting arm 19 to rotate by the threaded sleeve 13 through the upper linkage shaft 20, drive the rotating arm 15 to rotate around the rotating shaft 18 by the connecting arm 19 through the lower linkage shaft 16, drive the arc-shaped block 17 to rotate by the rotating arm 15, so that multiple arc-shaped blocks 17 contact the inner wall of the transformer winding, and fix the support frame 7 inside the transformer winding under the cooperation of multiple arc-shaped blocks 17. If the inner diameter of the transformer winding is different, the rotation amount of the rotating arm 15 can be controlled to adapt to transformer windings with different inner diameters. Drive the worm 11 to rotate by the servo motor 10, drive the worm gear 12 to rotate by the worm 11, drive the rotating shaft 5 to rotate by the worm gear 12, drive the connecting arm 1, the horizontal telescopic arm 2, the bearing arm 3, the vertical telescopic arm 4 and the external fan 24 to rotate by the rotating shaft 5, and use the external fan 24 to blow-dry the outside of the transformer winding. After the external drying is completed, the servo motor 10 pauses working. Drive the arc-shaped clamp 26 to move by the electric push rod 25, so that the two arc-shaped clamps 26 contact the outer wall of the transformer winding, and fix the vertical telescopic arm 4 on the outer wall of the transformer winding under the joint action of the two arc-shaped clamps 26. Then turn off the drive motor 14 to reset the arc-shaped block 17 and make the support frame 7 suspended inside the transformer winding. Then turn on the servo motor 10. Since the limit fixing position has changed at this time, the rotating seat 6 and the support frame 7 rotate following the rotating shaft 5, drive the inner fan 9 to rotate inside the transformer winding by the support frame 7, and use the inner fan 9 to blow-dry the inside of the transformer winding to complete the drying operation of the transformer winding. If the outer diameter of the transformer winding is different, loosen the upper locking pin 22 to separate the connecting arm 1 and the horizontal telescopic arm 2, pull out the horizontal telescopic arm 2 to make the horizontal telescopic arm 2 slide inside the connecting arm 1, drive the bearing arm 3, the vertical telescopic arm 4 and the external fan 24 to move by the horizontal telescopic arm 2, so that the two bearing arms 3 and the vertical telescopic arms 4 move away from each other to adapt to transformer windings with different outer diameters. Then tighten the upper locking pin 22. In order to make the blowing range more uniform, loosen the side locking pin 23 to separate the bearing arm 3 and the vertical telescopic arm 4, pull out the vertical telescopic arm 4 to make the vertical telescopic arm 4 slide inside the bearing arm 3, drive the external fan 24 to move by the vertical telescopic arm 4, so that the distance between the three vertical telescopic arms 4 is more uniform, and complete the use of the transformer winding drying constant pressure device.

Claims

1. A transformer winding drying constant pressure device, comprising a support frame (7) and a drive motor (14), characterized in that: The upper and lower ends of the support frame (7) are both equipped with multiple groups of driving motors (14) at equal intervals. The output ends of the driving motors (14) are both equipped with threaded rods (21), and the threaded rods (21) are movably connected to the support frame (7). The surfaces of the threaded rods (21) are both covered with threaded sleeves (13), and the threaded sleeves (13) are threadedly connected to the threaded rods (21), and the threaded sleeves (13) are slidably connected to the support frame (7). The side walls of the threaded sleeves (13) are both equipped with connecting arms (19), and the ends of the connecting arms (19) close to the threaded sleeves (13) are both equipped with upper linkage shafts (20), and the connecting arms (19) are movably connected to the threaded sleeves (13) through the upper linkage shafts (20). The support frame (19) on one side of the driving motor (14) A rotating arm (15) is installed on the side wall of the supporting frame (7), and a rotating shaft (18) is installed on the end of the rotating arm (15) close to the supporting frame (7), and the rotating arm (15) is movably connected to the supporting frame (7) through the rotating shaft (18). A lower linkage shaft (16) is installed on the end of the connecting arm (19) away from the threaded sleeve (13), and the connecting arm (19) is movably connected to the rotating arm (15) through the lower linkage shaft (16), and an arc block (17) is fixedly installed on the end of the rotating arm (15) away from the supporting frame (7), and multiple groups of placement plates (8) with equal spacing are installed on the outer wall of the supporting frame (7), and internal fans (9) are installed on the side walls of the placement plates (8), and a rotating seat (6) is installed inside the supporting frame (7).

2. A transformer winding drying constant voltage device according to claim 1, characterized in that: A servo motor (10) is installed inside the rotating seat (6), and a worm (11) is installed at the output end of the servo motor (10).

3. A transformer winding drying constant voltage device according to claim 2, characterized in that: A rotating shaft (5) is movably mounted inside the rotating seat (6) on one side of the worm (11), and the rotating shaft (5) extends to the outside of the rotating seat (6).

4. A transformer winding drying constant voltage device according to claim 3, characterized in that: A worm wheel (12) is mounted on the surface of the rotating shaft (5), and the worm wheel (12) and the worm (11) are meshed with each other.

5. A transformer winding drying constant voltage device according to claim 3, characterized in that: A connecting arm (1) is symmetrically mounted on the top of the rotating shaft (5), a transverse telescopic arm (2) is slidably mounted inside the connecting arm (1), an upper locking pin (22) is mounted on the top of the connecting arm (1), and the upper locking pin (22) passes through the connecting arm (1) and extends to the surface of the transverse telescopic arm (2).

6. A transformer winding drying constant voltage device according to claim 5, characterized in that: The end of the transverse telescopic arm (2) away from the connecting arm (1) is equipped with a bearing arm (3), the interior of the bearing arm (3) is slidably equipped with a vertical telescopic arm (4), and the side wall of the bearing arm (3) is equipped with a side locking pin (23), and the side locking pin (23) passes through the bearing arm (3) and extends to the surface of the vertical telescopic arm (4).

7. A transformer winding drying constant voltage device according to claim 6, characterized in that: An electric push rod (25) is installed on the side wall of the vertical telescopic arm (4), and an arc clamp (26) is installed on the output end of the electric push rod (25).

8. A transformer winding drying constant voltage device according to claim 7, characterized in that: External fans (24) are installed on the side walls of the vertical telescopic arms (4) on both sides of the electric push rod (25), and an external fan (24) is also installed on the side wall of the bearing arm (3) above the electric push rod (25).

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