Device for rapidly winding primary winding of combined mutual inductor
By using a fast winding combined transformer primary winding device, the problems of low winding efficiency and difficult to control the number of turns are solved, efficient and accurate winding production is achieved, and product consistency is improved.
Patent Information
- Application Number
- CN202422227829.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-09-11
AI Technical Summary
In the prior art, the winding efficiency of the primary winding of the current transformer is low, and the number of turns and appearance dimensions are difficult to control, resulting in a low product pass rate.
A device that quickly winds the primary winding of the transformer, including a workbench, support wheel, chuck, drive motor and fixed seat, is adopted to achieve efficient winding through the mold split design of the chuck and motor drive, and controls the number of turns and external dimensions of the winding.
The winding efficiency is improved, the number of turns and size are easy to control, making it more convenient for workers to operate, and the product consistency is high.
Smart Images
Figure CN223230223U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of combined mutual inductors, in particular to a device for quickly winding a primary winding of a combined mutual inductor. Background Art
[0002] In power systems, instrument transformers, as power conversion devices, primarily convert high voltage to low voltage and high current to low current, enabling measurement, protection, and monitoring of high-voltage lines. Cast-in-place combination instrument transformers integrate voltage and current transformers into one device, enabling simultaneous measurement, protection, and monitoring of both voltage and current on high-voltage lines.
[0003] The main structure of a combination transformer, with epoxy resin as the insulating matrix, consists of a primary current winding, a secondary current winding, a primary voltage winding, a secondary voltage winding, supports, a mounting plate, and terminal blocks. During production, each component is secured within a custom mold using specialized brackets. The number of turns and overall dimensions of each winding are key parameters in the manufacture of cast combination transformers. The primary and secondary windings of the voltage transformer are produced using specialized proprietary equipment, while the secondary winding of the current transformer is produced using a dedicated winding machine. The primary winding of the current transformer is wound based on the secondary winding, with overall dimensions and number of turns being key control parameters.
[0004] Currently, the primary winding of current transformers in the industry is mostly wound manually, with two people working together to manually wind the winding. This operation method is inefficient and the number of turns and external dimensions are difficult to control. Incorrect number of turns will result in product scrapping, and large errors in external dimensions will cause fluctuations in insulation distance, leading to an increase in partial discharge defects and affecting product qualification rates. Utility Model Content
[0005] In order to solve the technical problems of low working efficiency and difficulty in controlling the number of turns and external dimensions of manually wound primary windings of current transformers in the prior art, the utility model provides a device for quickly winding the primary windings of combined transformers.
[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0007] A device for quickly winding the primary winding of a combined mutual inductor comprises a workbench, on which four supporting wheels are rotatably mounted, a circular chuck is rotatably supported between the four supporting wheels, the outer circumference of the chuck is provided with a circle of winding grooves, the shape of the winding grooves being adapted to the shape of the primary winding; one end face of the chuck is detachably connected to a circular first gear, the first gear being coaxially arranged with the chuck; the chuck is divided into a left half-mold and a right half-mold in the axial direction, the left half-mold and the right half-mold being detachably connected; the left half-mold and the right half-mold are both divided into an upper semicircular sub-block and a lower semicircular sub-block in the radial direction, the upper semicircular sub-block and the lower semicircular sub-block being detachably connected; a drive motor is mounted on the workbench, the output shaft of the drive motor is fixedly connected to a second gear, the second gear being capable of meshing with the first gear; a fixing seat for fixing the secondary winding is mounted on the workbench.
[0008] With the above structural solution, the chuck is divided into a left half mold and a right half mold, and the left half mold and the right half mold are further divided into an upper semicircular block and a lower semicircular block, respectively, so that the secondary winding can be conveniently clamped in the inner hole of the chuck, and the assembled chuck is supported between four supporting wheels. The secondary winding is fixed on the workbench through a fixed seat, and then the driving motor drives the second gear to drive the first gear to rotate, thereby driving the chuck to rotate, thereby the flat copper wire can be wound in the winding groove of the chuck, and the number of turns of the winding can be controlled by controlling the number of revolutions of the driving motor. After the winding is completed, the chuck is disassembled, and the chuck and the primary winding can be separated, so that the primary winding and the secondary winding can be strung together. As mentioned above, the primary winding of the present application has high winding efficiency, the number of turns and the external dimensions are easy to control, and the operation of the workers is more convenient.
[0009] As a preferred implementation of a device for rapidly winding the primary winding of a combined mutual inductor, four supporting wheels are evenly arranged along the outer circumference of the chuck.
[0010] With the above structural solution, the four supporting wheels can evenly support the chuck, making the chuck rotate more stably.
[0011] As a preferred implementation of a device for rapidly winding the primary winding of a combined mutual inductor, the axial directions of the four supporting wheels are arranged along the horizontal direction.
[0012] With the above structural solution, the circumferential direction of the chuck is arranged horizontally, and the end face of the chuck is vertical, which is more convenient for support.
[0013] As a preferred implementation method of a device for quickly winding the primary winding of a combined mutual inductor, the left half mold and the right half mold are detachably connected to each other at one end face with a connecting plate, the connecting plate is connected to the upper semicircular block by screws, and the connecting plate is connected to the lower semicircular block by screws.
[0014] With the above structural solution, the upper semicircular sub-block and the lower semicircular sub-block can form a complete left half mold or right half mold through the connecting plate, and are easy to disassemble.
[0015] As a preferred implementation of a device for quickly winding the primary winding of a combined mutual inductor, the left half mold and the right half mold are connected by screws.
[0016] With the above structural solution, the left half mold and the right half mold are connected by screws to form a complete chuck, which is firmly connected and easy to disassemble.
[0017] As a preferred implementation method of a device for quickly winding the primary winding of a combined mutual inductor, a first positioning pin is fixedly connected to the end face of the left half mold facing the right half mold, a first positioning hole is opened on the end face of the right half mold facing the left half mold, and the first positioning hole is adapted to the first positioning pin; and / or, a second positioning pin is fixedly connected to the end face of the right half mold facing the left half mold, a second positioning hole is opened on the end face of the left half mold facing the right half mold, and the second positioning hole is adapted to the second positioning pin.
[0018] The above structural solution facilitates positioning when connecting the left and right half molds.
[0019] As a preferred implementation method of a device for quickly winding the primary winding of a combined mutual inductor, a third positioning pin is fixedly connected to the side of the upper semicircular sub-block facing the lower semicircular sub-block, a third positioning hole is opened on the side of the lower semicircular sub-block facing the upper semicircular sub-block, and the third positioning hole is adapted to the third positioning pin; and / or, a fourth positioning pin is fixedly connected to the side of the lower semicircular sub-block facing the upper semicircular sub-block, a fourth positioning hole is opened on the side of the upper semicircular sub-block facing the lower semicircular sub-block, and the fourth positioning hole is adapted to the fourth positioning pin.
[0020] The above structural solution facilitates positioning when connecting the upper semicircular sub-block and the lower semicircular sub-block.
[0021] The beneficial effects of the utility model include:
[0022] The chuck is divided into a left half mold and a right half mold, and the left half mold and the right half mold are respectively divided into an upper semicircular block and a lower semicircular block, so that the secondary winding can be conveniently clamped in the inner hole of the chuck. The assembled chuck is supported between four supporting wheels, and the secondary winding is fixed on the workbench through a fixed seat. Then the driving motor drives the second gear to drive the first gear to rotate, thereby driving the chuck to rotate, so that the flat copper wire can be wound in the winding groove of the chuck. The number of winding turns can be controlled by controlling the number of revolutions of the driving motor. After the winding is completed, the chuck is disassembled, and the chuck and the primary winding can be separated, so that the primary winding and the secondary winding can be strung together. From the above, the primary winding of the present application has high winding efficiency, the number of turns and the overall dimensions are easy to control, and the operation of the workers is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0024] Figure 1 This is a front structural diagram of a device for quickly winding the primary winding of a combined mutual inductor in a specific embodiment of the present utility model;
[0025] Figure 2 This is a schematic diagram of a half-section structure of a side view of a device for quickly winding a primary winding of a combined mutual inductor in a specific embodiment of the present utility model;
[0026] Figure 3 It is a semi-finished product of the combination of the primary winding and the secondary winding in the specific embodiment of the present utility model;
[0027] Figure 4 This is a front structural diagram of the assembled chuck in a specific embodiment of the present invention;
[0028] Figure 5 It is a schematic diagram of the half-section structure of the side of the chuck assembly in a specific embodiment of the present invention.
[0029] List of parts and reference numerals:
[0030] 1. Primary winding; 2. Support wheel; 3. Chuck; 31. Left half mold; 32. Right half mold; 33. Upper semicircular block; 34. Lower semicircular block; 35. Winding groove; 4. First gear; 5. Second gear; 6. Connecting plate; 7. Secondary winding. DETAILED DESCRIPTION
[0031] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0032] Reference Figure 1-5This embodiment provides a device for quickly winding the primary winding of a combined mutual inductor, comprising a workbench, on which four support wheels 2 are rotatably mounted. The axial directions of the four support wheels 2 are arranged horizontally. A circular chuck 3 is rotatably supported between the four support wheels 2. The four support wheels 2 are evenly arranged along the outer circumference of the chuck 3. The outer circumference of the chuck 3 is provided with a circle of winding grooves 35, the shape of which matches the shape of the primary winding 1. A circular first gear 4 is detachably connected to one end face of the chuck 3, and the first gear 4 is coaxially arranged with the chuck 3. A drive motor is mounted on the workbench, and a second gear 5 is fixedly connected to the output shaft of the drive motor, and the second gear 5 can mesh with the first gear 4. A fixing seat for fixing the secondary winding 7 is mounted on the workbench.
[0033] The chuck 3 is axially divided into a left half-mold 31 and a right half-mold 32. The left and right half-molds 31 and 32 are detachably connected, preferably by screws. To facilitate positioning when connecting the left and right half-molds 31 and 32, a first locating pin is preferably fixedly connected to the end surface of the left half-mold 31 facing the right half-mold 32, and a first locating hole is defined on the end surface of the right half-mold 32 facing the left half-mold 31. The first locating hole is adapted to fit the first locating pin.
[0034] The left and right mold halves 31, 32 are radially divided into an upper semicircular sub-block 33 and a lower semicircular sub-block 34, and the upper and lower semicircular sub-blocks 33, 34 are detachably connected. Preferably, a connecting plate 6 is detachably connected to each end face of the left and right mold halves 31, 32, facing away from each other. The connecting plate 6 is screwed to the upper and lower semicircular sub-blocks 33, and the connecting plate 6 is screwed to the lower and lower semicircular sub-blocks 34. To facilitate positioning when connecting the upper and lower semicircular sub-blocks 33, 34, a third locating pin is fixedly connected to the side of the upper and lower semicircular sub-blocks 33 facing the lower and lower semicircular sub-blocks 34. The lower and lower semicircular sub-blocks 34 have a third locating hole formed on the side facing the upper and lower semicircular sub-blocks 33, and the third locating hole is adapted to fit the third locating pin.
[0035] The working principle of this embodiment is:
[0036] During use, the prefabricated secondary winding 7 is first fixed to a workbench via a fixing base, which can be a clamp. The lower semicircular block 34 of the left half-mold 31 is then passed through the middle hole of the secondary winding 7. The upper semicircular block 33 of the left half-mold 31 is then butted against the lower semicircular block 34. The upper and lower semicircular blocks 33 and 34 of the left half-mold 31 are then connected and fixed together using a connecting plate 6 and screws. Similarly, the upper and lower semicircular blocks 33 and 34 of the right half-mold 32 are passed through the middle hole of the secondary winding 7 and then butted against each other. The upper and lower semicircular blocks 33 and 34 of the right half-mold 32 are then fixed together using a connecting plate 6 and screws. The left and right half-molds 31 and 32 are then screwed together. The assembly of the chuck 3 is now complete.
[0037] Then the assembled chuck 3 is rotated and supported between the four support wheels 2, and the first gear 4 is connected to one end face of the chuck 3, and the first gear 4 is meshed with the second gear 5. Insert one end of the flat copper wire into the winding groove 35, turn on the drive motor, and drive the second gear 5 to rotate. The first gear 4 can then drive the chuck 3 to rotate. As the chuck 3 rotates, the flat copper wire can be wound in the winding groove 35. During the winding process, it is necessary to manually control the row spacing of the flat copper wire so that the flat copper wires on the same layer are evenly arranged, and use a copper hammer to gently tap the flat copper wire so that the flat copper wire conforms to the shape of the winding groove 35. The number of revolutions of the drive motor can reflect the number of revolutions of the chuck 3. Therefore, by controlling the number of revolutions of the drive motor and converting it into the number of revolutions of the chuck 3, the number of winding turns can be controlled. After reaching the expected number of winding turns, the drive motor stops rotating.
[0038] After the expected number of winding turns is reached, the driving motor stops rotating, the supporting wheel 2 is loosened, and the chuck 3 together with the primary winding 1 and the secondary winding 7 are removed from the workbench and then placed on the plane of the workbench. The screws connecting the left half mold 31 and the right half mold 32 can be unscrewed to disassemble the left half mold 31 and the right half mold 32, and the primary winding 1 can be separated from the chuck 3. The screws connecting the upper semicircular block 33 and the lower semicircular block 34 of the left half mold 31 and the right half mold 32 can be unscrewed respectively, and the upper semicircular block 33 and the lower semicircular block 34 of the left half mold 31 and the right half mold 32 can be disassembled respectively, and the secondary winding 7 can be separated from the chuck 3 to obtain the primary winding 1 and the secondary winding 7 connected in series.
[0039] In this embodiment, the primary winding 1 has high winding efficiency, the number of turns and the external dimensions are easy to control, the worker operation is more convenient, and the product consistency is high.
[0040] In other embodiments, a second locating pin is fixedly connected to the end surface of the right half-mold 32 facing the left half-mold 31, and a second locating hole is formed in the end surface of the left half-mold 31 facing the right half-mold 32, which is adapted to fit the second locating pin. The first locating hole and the first locating pin, and the second locating hole and the second locating pin, can be provided simultaneously or independently.
[0041] In other embodiments, a fourth locating pin is fixedly connected to the side of the lower semicircular sub-block 34 facing the upper semicircular sub-block 33, and a fourth locating hole is formed on the side of the upper semicircular sub-block 33 facing the lower semicircular sub-block 34, and the fourth locating hole is adapted to fit the fourth locating pin. The third locating hole and the third locating pin, and the fourth locating hole and the fourth locating pin can be provided simultaneously or independently.
[0042] In this embodiment, the drive motor can be electrically connected to the speed change device and digital display speed control device in the prior art to more conveniently control the speed and number of revolutions of the drive motor, obtain a more accurate number of winding turns, and the number of turns is visible during operation, making operation more convenient.
[0043] The workbench in this embodiment is an ordinary rack. As long as the installation of various parts can be achieved, this embodiment will not be described in detail.
[0044] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A device for quickly winding the primary winding of a combined mutual inductor, comprising a workbench, characterized in that: Four supporting wheels (2) are rotatably mounted on the workbench, and a circular chuck (3) is rotatably supported between the four supporting wheels (2). The outer peripheral surface of the chuck (3) is provided with a circle of winding grooves (35), and the shape of the winding grooves (35) is adapted to the shape of the primary winding (1); an end surface of the chuck (3) is detachably connected to a circular first gear (4), and the first gear (4) is coaxially arranged with the chuck (3); the chuck (3) is divided into a left half mold (31) and a right half mold (32) in the axial direction, and the left half mold (31) is provided with a right half mold (32). The mold (31) and the right mold (32) are detachably connected; the left mold (31) and the right mold (32) are both divided into an upper semicircular sub-block (33) and a lower semicircular sub-block (34) in the radial direction, and the upper semicircular sub-block (33) and the lower semicircular sub-block (34) are detachably connected; a driving motor is installed on the workbench, and a second gear (5) is fixedly connected to the output shaft of the driving motor, and the second gear (5) can be engaged with the first gear (4); a fixing seat for fixing the secondary winding (7) is installed on the workbench.
2. The device for rapidly winding the primary winding of a combined mutual inductor according to claim 1, characterized in that: The four supporting wheels (2) are evenly arranged along the outer peripheral surface of the chuck (3).
3. The device for rapidly winding the primary winding of a combined mutual inductor according to claim 1, characterized in that: The axial directions of the four supporting wheels (2) are arranged along the horizontal direction.
4. The device for rapidly winding the primary winding of a combined mutual inductor according to claim 1, characterized in that: The left half mold (31) and the right half mold (32) are both detachably connected to a connecting plate (6) at their end faces away from each other. The connecting plate (6) is connected to the upper semicircular sub-block (33) by screws, and the connecting plate (6) is connected to the lower semicircular sub-block (34) by screws.
5. The device for rapidly winding the primary winding of a combined mutual inductor according to claim 1, characterized in that: The left half mold (31) and the right half mold (32) are connected by screws.
6. The device for rapidly winding the primary winding of a combined mutual inductor according to claim 1, characterized in that: The end surface of the left half mold (31) facing the right half mold (32) is fixedly connected with a first positioning pin, and the end surface of the right half mold (32) facing the left half mold (31) is provided with a first positioning hole, and the first positioning hole is adapted to the first positioning pin; And / or, the end surface of the right half mold (32) facing the left half mold (31) is fixedly connected with a second positioning pin, and the end surface of the left half mold (31) facing the right half mold (32) is provided with a second positioning hole, and the second positioning hole is adapted to the second positioning pin.
7. The device for rapidly winding the primary winding of a combined mutual inductor according to claim 1, characterized in that: A third positioning pin is fixedly connected to one side of the upper semicircular sub-block (33) facing the lower semicircular sub-block (34), and a third positioning hole is opened on one side of the lower semicircular sub-block (34) facing the upper semicircular sub-block (33), and the third positioning hole is adapted to the third positioning pin; And / or, a fourth positioning pin is fixedly connected to the side of the lower semicircular sub-block (34) facing the upper semicircular sub-block (33), and a fourth positioning hole is opened on the side of the upper semicircular sub-block (33) facing the lower semicircular sub-block (34), and the fourth positioning hole is adapted to the fourth positioning pin.