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آلات هيدروليكية2 PowerPoint PPT Presentation


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آلات هيدروليكية2. المستوى الدراسى الخامس. الباب الاول - النظرية الأساسية للتوربينات الهيدروليكية (Basic theory of hydraulic Turbines ) - تعريف:

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آلات هيدروليكية2

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2

2


2

  • -

    (Basic theory of hydraulic Turbines)

  • - :

  • . ( (Prime mover) ). (runner) (blades).


2

  • (rotating shaft) . (Water turbines) .


2

  • (Transmission Towers) (Transmission lines ) .


2

2.1- (hydro-electric power plants)

  • ( Thermal power plants) . (1.1) :


2

  • (Dam)

  • (upstream). . . . .


  • 2

    • ( Penstock) :

  • (cross section) ( ) (upstream) . "headrace". ( "headrace") . (surge tanks) ( water hammer)..


  • 2

    • (Power house):

  • . ( generator) . : ... .

  • (horizontal shaft turbine) ( ) .


  • 2

    (vertical shaft turbine) .

    (Tailrace)

    . (downstream). (tailrace).


    2

    ( classification of hydraulic turbines )

    (turbine inlet). :

    : (impulse turbine):

    (kinetic energy) (atmospheric pressure).


    2

    (reaction turbine):

    (guide vanes) (runner) (pressure energy) .

    . :


    2

    # :

    (tangential flow turbine)

    (radial flow turbine)

    (axial flow turbine)

    (mixed flow turbine)

    # :

    (high head turbine)

    (medium head turbine)

    (low head turbine)


    2

    # :

    (vertical shaft turbine)

    horizontal shaft turbine) )

    # :

    (low specific speed turbine)

    (medium specific speed turbine)

    (high specific speed turbine)


    2

    (Euler's Equation)

    (blades) (impulse) reaction) )

    • (torque) (rate of change of angular momentum) . (Inlet) (Outlet) . (1.5) (radial flow runner) .


    2

    • r1 v1 . r2 v2 . . v1 u1 vr1 ( r1) ().


    2

    • v1 : (radial component) (velocity of flow) vf1 (tangential component) (velocity of whirl) vw1. (2) .


    2

    • :

    • =

    • .

    • =

    • :

    • :

    • :


    2

    • ( ) :

    • :

    • :


    2

    • ( )

    • :

    • (Euler,s equation) E (Euler,s head) .

    • (Theoretical power per unit weight ).


    2

    • (Degree of reaction)

    • :

    • .

    • .

    • E

    • .

    • .


    2

    • :

    • :

    • ( )

    • :

    • ( )


    2

    • R :

    • :


    2

    • :

    • ( ) :

    • :


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