hydro generator for sale

Hydro Generator Water Turbine 

Reaction turbines

Reaction turbines are acted on by water, which changes pressure as it moves through the turbine and gives up its energy. They must be encased to contain the water pressure (or suction), or they must be fully submerged in the water flow.

Newton's third law describes the transfer of energy for reaction turbines.

Most water turbines in use are reaction turbines and are used in low (<30m/98 ft) and medium (30-300m/98–984 ft) head applications. In reaction turbine pressure drop occurs in both fixed and moving blades.

Impulse turbines

Impulse turbines change the velocity of a water jet. The jet pushes on the turbine's curved blades which changes the direction of the flow. The resulting change in momentum (impulse) causes a force on the turbine blades. Since the turbine is spinning, the force acts through a distance (work) and the diverted water flow is left with diminished energy.

Prior to hitting the turbine blades, the water's pressure (potential energy) is converted to kinetic energy by a nozzle and focused on the turbine. No pressure change occurs at the turbine blades, and the turbine doesn't require a housing for operation.

Newton's second law describes the transfer of energy for impulse turbines.

Impulse turbines are often used in very high (>300m/984 ft) head applications .

(1) There are two types of generators: horizontal and vertical.

(2) The terminal voltage can reach 400V, 6300V and 10500V and the insulation class is F/F.

(3) The excitation method includes excitation of double winding shunt with SC and brushless excitation.

(4) The horizontal generator adopts steel-welded frame with public base plate, slide bearing construction. It adopts two and four fulcrums with turbine and the two form hydro-generator unit.

(5) The vertical generator adopts suspension type, bracket and hydraulic jacks which are fitted at the lower parts of rotor