@@TheOptimuspringles A poster that reviews the comments before posting. Incredible. I get a little tired of reading the same comment by six different posters about seven times. Well played.
it has to close slowly like this…because of the potential likelihood of damage to the components through ’water hammer’…..as this valve is being closed another valve is being opened to direct the water into another chamber to dissipate the kinetic energy of the water charging downhill inside the penstock
This is a needle valve. The pelton must be the nave of that spesific valve but the technical term is a needle valve. It i s commonly used to control water into pelton TURBINES.
Yes, it is a needle valve made by the Pelton Co. It's not a turbine outlet but an outlet valve for the dam which has to be tested periodically. It's a manual valve because how are you going to open it if the lights go out and you need to lower the reservoir. Most of these discharge valves are actually powered by the water pressure behind the valves.
BRILLIANT! And then, after it's run through the turbine blades, you could shoot it out of a huge pipe, maybe with a thing in it that looks like the tip of a jet engine!
@Thefarmshow OBVIOUSLY he was closing it. Der. LOL Jokes, I know you were joking, I was just making fun of all the idiots who thought you were asking a question.
This picture doesn't show it, but I'm supposing that the next things this water stream impacts are the buckets of the wheel. A good nozzle of high nozzlitude turns pressure head into velocity head, which the buckets then exploit to harvest mechanical power in solid rotating parts.
