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Pelton Turbine Nozzle alignment process automation

Conventionally, it required manual layout marking of runner diameter on floor or Housing Plate. Then Fixing the Needle alignment fixture on nozzle head and measuring the center by right angle and dropping the plumb over the marking. This activity is repeated one by one for all nozzles. Accuracy of this process is very low as it depends on so many factors like plumb condition, needle rod condition, right angle position etc. This is a time-consuming activity and also very tedious due to space constraint.

At FLOVEL we constantly strive towards innovation for improvement. For the above process, we started using portable Coordinate Measuring Machine (CMM), which makes process smoother and accurate. The accuracy enhances performance and durability of the machine.

With the help of CMM, we directly check all nozzles position in one go w.r.t to runner diameter, in a very accurate and simpler way. The new process has multiple benefits including:

  1. No need of any layout marking
  2. No need of any separate needle alignment fixture and needle rod
  3. No need of any right angle and plumb to check position
  4. No need to repeat the process for every nozzle.

With the same data we can check the angle of needles and also the position of all needles on one plane, and the whole process takes considerably less time.


FLOVEL name has been synonymous with the hydro power sector for over four decades. FLOVEL is a full-line supplier of electromechanical equipment and services for small and medium size hydro power plants manufacturer of hydraulic turbines, valves and turnkey supplier of electro mechanical packages for hydro power projects and ranks amongst the leading players globally. FLOVEL manufacturers complete range of Pelton, Francis, Kaplan, Axial Flow turbines and Valves for hydropower projects. The strength of FLOVEL is in its ability to offer all-inclusive solutions (Electro Mechanical-Turnkey Packages).


FLOVEL Energy Private Limited
Vatika Mindscapes,
Suite 101-A, Tower-B,
12/3, Mathura Road,
Faridabad – 121 003,
Haryana, INDIA
Fax: +91 129 4090650