Speed Governer in Steam Turbine

You might want to check out some pictures which do explain sometimes better how things work:

https://www.google.com/search?=hydraulic+speed+governor+in+a+steam+turbine

Check the Image tab and have a scroll through.

Have fun!

Also check out Woodward governors; there are now electronic governors that replace the older flyweight designs.

http://www.mhps.com/en/technology/business/power/service/steam/governor/comparison.html

thanks a lot for your efforts, the governor i have is woodward but i need to understand its components i see so many parts and so many pressures of oils , that's why i wanted to know how the cycle goes.

There should be a manual that explains that. If it has been lost, try contacting Woodward for a replacement.

This might be a little bit off-topic, but it's potentially critically important...

In addition to a speed-control device, a trip & throttle valve is generally required on big turbines. This is a critical safety device, designed to rapidly cut the steam supply off in the event of a runaway overspeed event or loss of lube oil pressure.

Theory = make the go fast not go so fast.

Recommend not using this piece of machinery until your knowledge and understanding are equal to the task.