The future development of special transformers in China
In the future, the development direction of transformers in my country is still energy saving, low noise, fireproof and explosion-proof, and high reliability. Therefore, high-quality low-loss magnetic conductive materials, winding machines with axial amplitude compression equipment, vapor phase drying equipment, and stepping cross-cutting lines are selected. It is more important to wait for advanced production equipment.
The development of the transformer manufacturing process mainly combines the characteristics of new products and new structures, discusses the processes that are accustomed to them, and focuses on the development and application of new materials and new equipment to continuously improve the quality and reliability of products. Development requires a lot of capital investment and increased production costs.
In order to reduce the no-load loss coefficient of special transformers as much as possible, the silicon steel sheets currently selected are all cold-rolled high-quality silicon steel sheets, and the sheet shape is getting thinner and thinner. The manufacturer has chosen the non-stacking yoke process. The core binding machine should be gradually promoted. The process and tooling involved in coil manufacturing should ensure low load loss, high ability to accept short-circuit mechanical force and better dispersion. In order to improve the mechanical strength of large products, semi-hard wires should be used.
Now it is recommended for the new distribution transformers in the transformation of urban power grids and rural power grids; there are also wound iron core transformers, amorphous alloy transformers, electric arc furnace transformers, fully sealed transformers, electric furnace transformers, intermediate frequency furnace transformers, combined transformers, dry-type transformers Transformers, high ignition point oil transformers, SF6 gas insulated transformers, etc. The production process of these transformers can basically borrow the production process of the above-mentioned large-scale transformers.
In order to get used to it and meet the needs of the market, many transformer manufacturers have introduced advanced production technology and equipment from abroad to further improve the product structure and improve product function. These transformers are generally used in large-scale power stations or power transmission, and their reliability is critical, so manufacturers have taken many measures to improve the rationality of the function and distribution of electricity, magnetism, heat, and force.
