Pelton Hydro Turbine for high water head Project
Pelton turbine is consisted of runner, turbine case, nozzles assembly, inlet pipe, deflector etc. The runner is assembled in the shaft of the generator, torque transmission by ping.
lt utilizes the dynamic power of high pressure water flow to rotate the runner and force the rotor work, The centre line of the jet is in the same plane as the runner while rotating.
Pelton turbine has the advantages of compact construction, stable running and easy operation. Normally, Small pelton turbine always arranged with horizontal shaft and one or two nozzles, Medium size and larger Pelton turbines are most often arranged with vertical shaft, and equip four or six nozzles to obtain more power.
3. Jet deflectors
The needle control mechanism includes a jet deflector; the jet deflector is also called deviator. It is used to deflect the jet on a sudden load rejection in order to avoid run away of the unit and pressure over rise for excessive water hammer in the penstock.