How does the centrifugal governor work?
In the centrifugal governor, there are two heavy ball cone pendulums whose rotation speed is the same as that of the steam engine. When the speed of the steam engine is increased, the heavy ball is moved to the outside of the governor by centrifugal force, so the mechanism is driven to shut off the steam engine intake. The valve will cause the steam engine speed to drop. When the steam engine speed is too low, the heavy ball will move to the inside of the governor and then open the steam engine intake valve. According to this principle, the speed of the steam engine can be controlled within a certain range.