Principle of steam turbine cutting cylinder heating

Friction. The principle of steam turbine cutting cylinder heating is friction. According to the query on Sohu.com, it means that all the exhaust steam from the medium-pressure cylinder is led out through the extraction pipe, and only a small amount of cooling steam remains into the low-pressure cylinder to take away the heat generated by the friction between the rotor blades and the internal working fluid. An operation mode that realizes that the low-pressure cylinder does no work.