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Phase 1B > Turbine Parts > Flashcards

Turbine Parts Flashcards

0
Q

Adjustable Runner Blades

A

curved members on runner which transmit energy from the flowing water to the runner hub

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1
Q

Runner Hub

A

provides support for the propeller blades and attachment to the main shaft

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2
Q

Crosshead

A

component inside the hub which changes the angle of the adjustable blades via movement of the operating rod to which it is rigidly attached

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3
Q

Runner Cone

A

conical lowermost extension on the runner which streamlines the turbine

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4
Q

Gate Operating Ring

A

changes reciprocating energy to angular force and distributes to wicket gates simultaneously

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5
Q

Wicket Gates

A

acts as a valve to regulate and equally distribute water flow to the runner blades

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6
Q

Gate Stem

A

the top and bottom wicket gate extension which supports the gate in bearings

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7
Q

Gate Lever

A

member rigidly attached to the gate stem which allows adjustment of wicket gate position

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8
Q

Shear Lever

A

member which ‘floats’ on the gate stem and transmits energy from one gate link to the gate lever by way of the shear pin

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9
Q

Gate Link

A

member connecting operating ring to the shear lever

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10
Q

Shear Pin

A

“weak link” connecting shear lever to the gate lever designed to break when an obstruction prevents the gate from closing

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11
Q

Outer Head Cover

A

outer circumferential section providing support from the upper gate stems, and provides containment and channeling of water leakage from around the upper gate stems

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12
Q

Intermediate Head Cover

A

middle circumferential section connecting the inner and outer head covers and providing support for the operating ring

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13
Q

Inner Head Cover

A

section containing and providing support for the turbine bearing and the packing gland housing

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14
Q

Bottom Ring

A

stationary ring supporting the lower gate stems

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15
Q

Stay Ring

A

stationary upper and lower radiuses sections, integral with stay vanes which provide support to the top and bottom turbine structure and direct the water into the gates

16
Q

Stay Vanes

A

streamlined members which support the stay rings and direct the water through the wicket gates

17
Q

Discharge Ring

A

stationary ring which surrounds the turbine blades and guides the water past the blades to the draft tube

18
Q

Scroll Case

A

the water passage from the reservoir to the stay ring

19
Q

Draft tube liner

A

metal liner under the discharge ring at the entrance to the draft tube, which protects the concrete from erosion

20
Q

Pit Liner

A

metal liner surrounding the wheel pit and lining the concrete wall

21
Q

Turbine Walkway

A

platform and supporting structure in the wheel pit above the head cover that facilitates inspections and servicing

22
Q

Servomotor

A

hydraulic cylinder containing a moving piston which converts fluid into force, for adjustment of the runner blade angle or the wicket gate position

23
Q

Turbine Guide Bearing

A

bearing assembly that is mounted inside the head cover which provides radial loading support for the main shaft

24
Q

Packing Box

A

separates the water passage from the atmosphere and restricts water leakage past the shaft into the inner headcover

25
Q

Main Shaft

A

the member which transmits the power developed by the runner to the generator

26
Q

Coupling Flange

A

connecting flange at either end of the shaft for attachment to the runner or generator

27
Q

Nut Guard

A

protective cover over the coupling bolts or nuts

28
Q

Connecting rod

A

connects the gate servomotor piston to the operating ring

29
Q

Operating Rod

A

connects the blade servomotor piston to the crosshead

30
Q

Oil Head Pipes

A

concentric oil pipes passing through the bore of the main shaft transmitting governor oil to the blade servomotor

Phase 1B (10 decks)

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