Used to drive the boiler induced draft fan. When the capacity of the induced draft fan is large, a steam turbine is used to drive the boiler induced draft fan, avoiding the significant impact of excessive motor starting current on the plant power system and reducing plant power consumption to ensure the reliability of plant power. The types of induced draft fan turbines are divided into condensing type, back pressure type, extraction condensing type, etc. The products comply with international standards such as API611 and API612. Mainly suitable for various inlet parameters with power below 60MW, inlet pressure below 8.83MPa, inlet temperature below 535 ℃, and variable speed operation.