The so-called heat engine, the most basic function is to convert thermal energy into mechanical energy.
So the working principle of steam engine is mainly how to convert thermal energy into mechanical energy.
First of all, the steam engine has a boiler room. The boiler room heats the water, and the water is heated and gasified to become steam. At the same time, the volume expands, and the piston is driven by huge air pressure to generate mechanical energy. There is a certain device, mainly similar to Valle in piston pump, which controls the steam to push the piston to move back and forth, and then converts the reciprocating motion of the piston into rotation through the crank-connecting rod mechanism, thus pushing all kinds of equipment to do work.