1.-Device identification 

 

Name: Pelton wheel

 

Location: Higher Technical School of Engineering (ETSI). West hallway Ground floor

 

Origin: Izbor Hydroelectric Power Plant, Granada

 

2.-Technical characteristics

 

Measurements: 142.5 x 29.5 cm.

 

Material: Steel. Painted in red

 

Use: The hydraulic turbine transforms the hydraulic energy of the water into mechanical energy, by hitting the impeller blades in the form of a jet, to later convert it into electrical energy using a generator.

 

General description : The impeller, rotor or wheel, is the main component of Pelton turbines and is made up of a steel disc with blades (blades or spoons) located on the periphery of the wheel and with a sharp interior edge, on which the injector jet affects. The exchange of energy between the water and the machine takes place in the blades. This impeller has 22 elliptical-shaped blades or spoons cast with the same wheel.

 

3.-Cataloging-Documentation

 

 Date: c. 1970

 

Builder/Brand: Sociedad Anónima VERS, Málaga

 

Country Spain

 

Serial No. and Model: Not stated

 

4.-State of conservation: Good. Small cracks on the ends of some spoons

 

5.-Observations: The legend that illustrates the impeller states: “Pelton impeller from the Izbor power plant. The Izbor power plant is located in the municipality of Vélez de Benaudalla in the province of Granada. It is a power plant with two groups, a vertical axis and four injectors per group. Central characteristics. Turbine the water from the Beznar reservoir. 1. Power 5.72 Mw (7,835 HP). 2. Jump. (b) 306 m. 3. Flow rate 2.60 m3/s. 4. Annual production: 33 Gwh (Production in the life of the impeller 330 Gwh) 5. The alternator has 5 pairs of poles (600 rpm)”

 

6.-Bibliography and Sources

 

– Marchegiani, Ariel R. Pelton Turbines. Sept. 2004. Available at http://kimerius.com/app/download/5780662706/Turbinas+Pelton.pdf [Accessed: 03-26-2019]

– * Mataix, Claudio. Study and project of tangential TH: TP. In Mataix, Claudio, Hydraulic turbomachines: hydraulic turbines, pumps, fans . 2nd ed. rev. and run Madrid: Pontifical University of Comillas, 2009. Chap. 13., p. 891-964. Figure TP [Pelton Turbine] on p. 399

– Pelton turbine. Wikipedia. Available at https://es.wikipedia.org/wiki/Turbina_Pelton [Consulted: 03-26-2019]

7.-More information: Pelton turbines are action, impulsion and partial admission turbines when only part of the periphery of the impeller is attacked by water. They only communicate kinetic energy. They are hydraulic turbines appropriate for taking advantage of large waterfalls and relatively small flows. Currently, the entire impeller is usually made of a single piece, its size depending on the height of the jump in which it is installed and the power required. The size of the blades is in relation to the diameter of the jet. The impeller or wheel is housed in a casing to prevent splashes and accidents.

 

The invention of this turbine is due to Lester Allan Pelton , whose patent of 1880 (Oct. 26) contained all its essential elements that, perfected by continuous research, have given rise to the modern Pelton turbines.