Turbina pelton
César bertomeu
1
2
Principio de funcionamiento
•


Está formada por una rueda móvil provista de aletas o cucharas en su
periferia sobre las cuales incide el chorro de agua a la presión
atmosférica
Chorro sale de un inyector fijo en el cual la regulación se efectúa
variando la posición de una aguja que obtura más o menos el orificio
de salida. El chorro incide en la arista central de las cucharas y se
divide en dos partes que salen despedidas lateralmente, para caer
después al canal de fuga directamente por la fuerza de la gravedad
(por tanto, no tienen difusores).
Para caudales mayores, pueden disponerse varias toberas en
diversas posiciones del rodete
3
rodete
4
5
Energy Extraction: Pelton Turbine
• These double cups
catch the water from the
input water jets and
redeflect it for
maximum thrust to spin
the rotor
• Pelton turbines are
popular for
microturbines
producing remote home
energy
6
Small Harris hydro generator for
home use
 An automotive
alternator is
remanufactured
to generate the
required voltage
at a low speed,
as car
alternators run
at 5,000 to
18,000 rpm
 A Pelton wheel
turbine is spun
by four nozzle
flows
7
Turbine Description
• A small exciter generator is at the
top of the shaft and its energy
drives the stator (stationary) coils
of the large alternator
• The alternator (main generator of
alternating current) is above the
turbine on the same shaft
• The turbine at the bottom spins at a
slow speed (~150 rpm) to move the
rotor coils past the stator coils and
generate at the desired frequency
(60 Hz in the US; often 50 Hz
overseas)
8
030317
030317
9
A Typical Turbine Hall
• Tongland Turbine Hall,
Kirkcudbright,
Galloway
• The exciters are located
atop the generators and
drive the field coils of
the generator
• Turbine areas are very
noisy, requiring ear
protection
10
030323
http://www.freefoto.com/pictures/industry/hydro_electric/index.asp?i=56
11
12
13
14
15
16
17
18
19
20
21
22
23
Descargar

Turbina pelton