Basic Introduction of Power Transformer Winding Machine

Transformer winding machine is a special equipment used to wind transformer coils. In the process of transformer coil production, winding equipment is divided according to transformer voltage level or capacity, including automatic winding machine for winding distribution transformer high and low voltage coils and foil coil winding machine; There are vertical winding machines and horizontal winding machines for winding large power transformer coils. Selecting appropriate transformer winding equipment is the key to the production of high-performance transformers. According to different needs, transformer winding machines can be divided into the following types. Automatic winding machine automatic winding machine is a special equipment for winding high-voltage coils of distribution transformers. The coil wound by this equipment has the advantages of compact structure, small volume and high strength. In order to further improve the production efficiency, the host speed of the new winding machine is increased from 300 rad / min to 500 rad / min.

The wire arrangement mechanism is increased from single head to two to three heads, that is, three coils can be wound at one time. At the same time, multiple wires (up to 4) are used and wound; Add radial pressing mechanism; The tension of each pay off reel is controlled independently, so that the winding wires are arranged neatly, the turns are compact and uniform, and the current density is evenly distributed. At the same time, it is equipped with end insulation uncoiling mechanism and wire tensioning mechanism. The computer can preset a variety of parameters, which can complete the coil winding at one time, greatly improve the degree of automation and reduce the labor intensity of workers.

Foil coil winding machine

Foil coil winding machine is the key equipment for winding low-voltage foil coil. Tension control and foil strip deviation correction are the key technologies of foil coil winding machine. The tension of the foil strip of the existing domestic or imported foil coil winding machine is generated by mechanical friction, and its tension is not stable enough, which will cause defects such as uneven tightness of the wound coils, inconsistent DC resistance between coils, out of tolerance of coil outer diameter and so on. Domestic manufacturers have developed a new type of digital foil winding machine, which uses DC motor to generate foil belt tension. It is characterized by convenient, accurate and stable tension adjustment, and the tension remains unchanged in the whole winding process, so as to ensure the winding quality of the coil. In particular, it has a wide tension adjustment range and is more suitable for winding thinner foil strips without damaging the end edges of the foil strips. Moreover, the tension motor is in the power generation state in the tension state, and the generated electric energy can be fed back to the winding motor or power grid. The friction energy consumption of friction free braking tension mode is significant in energy saving. Moreover, the control system will automatically calculate the coil diameter of the uncoiler, so as to adjust the motor output torque at any time to ensure the constant tension in the whole winding process, which plays a key role in ensuring the coil quality. At the same time, the deviation adjustment system of the equipment adopts photoelectric analog sensor to non-contact detect the edge of the foil belt, and dynamically correct the deviation through the servo motor. The system has high precision, fast response, high reliability and high deviation adjustment accuracy. According to the existing data, the equipment technology has been at the world leading level. Vertical winding machine transformer winding machine transformer winding machine the larger the transformer capacity used now, the greater the impact on the power grid, and the higher the security is required. The manufacturing quality performance of transformer requires not only reliable electrical performance, but also more reliable mechanical stability and short-circuit resistance. The stability is mainly reflected in the manufacturing process control of the coil, that is, the electromagnetic balance of the high and low voltage coil is required, and the axial turns are close and evenly distributed. Therefore, it is required that the coil winding process should be compressed in the axial direction and tightened in the radial direction. The vertical winding machine just uses the self weight of the wire cake to compress naturally in the axial direction, and the tensioning device is used to control the tension in the radial direction. Therefore, the vertical winding machine is widely used for the winding of high-voltage coils in large transformers, and even the low-voltage spiral coils are produced by the vertical winding machine.