In addition to the induction melting furnace, the intermediate frequency power supply can also be used in these places.
As an auxiliary equipment for induction melting furnace, IF power cabinet is a static frequency conversion device, which converts three-phase power frequency power into single-phase power; it has strong adaptability to various loads and wide application range.
The main use of intermediate frequency power supply lies in the melting, heat preservation, sintering, welding, quenching, tempering, heat transfer, metal liquid purification, heat treatment, bending, and crystal growth of various metals. It is developed from the early intermediate frequency generator set. The thyristor type variable frequency power supply has been continuously developed into a new generation of variable frequency power supply unit.
The rectifier transformer, the thyristor rectifier, the freewheeling diode, the inverter and the DC reactor of the junction rectifier and the inverter, and the corresponding control loop and protection loop are the structures of the intermediate frequency power supply.
The development of IF power supplies has shown a trend of specialization and rapidity in recent years. The operating principle of IF power supplies is also very different from that of ordinary heating power supplies. With the advantages of fast heating speed and uniform heating, the application of intermediate frequency power supply is very extensive.
The IF power supply equipment has continuous mode and timed fixed power mode, which can be set freely according to the working needs. The micro-op will automatically detect the status of the equipment before each start of the inverter. If there are various conditions that do not meet the startup status, the inverter will automatically display the fault. Point and block the drive to prevent unnecessary losses. Easy maintenance, simple operation, providing spare board for immediate generation; working for faulty board, does not affect production; spare parts are available to users at any time; fewer operating buttons, more display instruments, and beautiful surface.
The traditional cooling method for IF power supply is to use open pool cooling. The fatal shortcoming is the internal scaling of the power supply, low efficiency and damage to the equipment. The cooler can realize internal and external circulation cooling, and the inner circulation adopts softened water, which solves the problem of scaling of the intermediate frequency power supply.
Medium frequency power supply application field: This cooling equipment is one of the most new types of equipment in the field of heating and cooling. It has the advantages of compact structure, small floor space, high heat transfer efficiency, convenient operation and maintenance, and the ability to handle small temperature differences. As a kind of energy-efficient product, plate cooler has been widely used in various industrial fields such as mining, metallurgy, petroleum, chemical, machinery, electric power, medicine, food, textile, paper, shipbuilding and marine development.
The intermediate frequency power supply currently uses a parallel resonant inverter structure. Therefore, while researching and developing a larger capacity parallel inverter intermediate frequency power supply, the development of a series inverter intermediate frequency power supply with simple structure and easy to start frequently is a problem to be solved in the field of domestic intermediate frequency induction heating devices, especially in smelting and casting applications. In the middle, the series inverter power supply is easy to realize constant power output under full working condition and one machine multi-load power distribution control, which is more worthy of popularization and application.
