Analysis of the Development Direction of Small and Medium-sized Transformer Products

It is a new type of distribution transformer that is currently recommended for urban and rural power grids. It is a seventh-generation energy-saving product, as well as coil core transformers, amorphous alloy transformers, hermetically sealed transformers, and modular transformers. Transformers, dry-type transformers, high ignition point oil transformers, gas-insulated transformers, etc. The production process of these transformers can basically borrow the production process of the above-mentioned large-scale transformers according to different products with different process characteristics. For example, core transformers for coil cores, coil core transformers currently produced are all of closed cores with multi-level and R-type cores. This requires coil core machines, special winding machines, and core annealing furnaces, otherwise it is difficult to produce coil core transformers. .

Another example is that in order to achieve low maintenance of the product and development of corrugated tank-type fully sealed transformer, it is necessary to provide a corrugated tank production line. At present, China has a simple corrugated tank production line can also meet the production requirements. Amorphous alloy transformers, because the amorphous strip is particularly thin and 0.03mm and particularly brittle, it is difficult for the manufacturer to process it into iron core. Therefore, it is generally purchased from ready-made iron cores, such as those produced by the United States’s Allied Letters Corporation or the China Steel Research Institute. of.

With the development of the national economy, cities have become large-scale, bustling and densely populated with high-rise buildings. In the urban network reconstruction, a 110 kV transformer substation is required for 110 kV lines to enter the city.

There are many types of high ignition point oil such as silicone oil Midel-7131 oil, alpha oil, beta oil, etc., but the combination of various factors or beta oil is most suitable. The non-toxic beta oil is compatible with all materials used in the transformer. The ignition point is 308°C, and the price is about RMB 20 per kg. Only the viscosity is slightly larger than the transformer oil. Therefore, sufficient attention can be paid to the oil passage and heat dissipation. The production of beta oil transformers does not require special special equipment.