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Turbine Definitions 2 > Turbine Definitions > Flashcards

Turbine Definitions Flashcards

1
Q

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

A

Runner hub

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2
Q

Curved members of runner which transmit energyfrom the flowing water to the runner hub

A

Adjustable runner blades

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3
Q

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

A

Crosshead

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4
Q

Conical lowermost extension on the runner which streamlines the turbine

A

Runner cone

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5
Q

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

A

Gate operating ring

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6
Q

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

A

Wicket gates

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7
Q

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

A

Gate stem

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8
Q

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

A

Gate lever

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9
Q

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

A

Shear lever

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10
Q

Member connecting operating ring to the shear lever

A

Gate link

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11
Q

Weak link connecting shear lever designed to break when an obstruction prevents the gate from closing

A

Shear pin

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12
Q

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

A

Outer head cover

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13
Q

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

A

Intermediate head cover

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14
Q

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

A

Inner head cover

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15
Q

Stationary ring supporting the lower gate stems

A

Bottom ring

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16
Q

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

A

Stay ring

17
Q

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

A

Stay vanes

18
Q

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

A

Discharge ring

19
Q

The water passage from the reservoir to the stay ring

A

Scroll case

20
Q

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

A

Draft tube liner

21
Q

Metal liner surrounding the wheel pit and lining the concrete wall

A

Pit liner

22
Q

Platform and supporting structure in the wheel pit above the headcover that facilitates inspections and servicing

A

Turbine walkway

23
Q

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

A

Servomotor

24
Q

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

A

Turbine guide bearing

25
Q

Seperates the water passage from the atmosphere and restricts water leakage past the shaft into the inner head cover

A

Packing box

26
Q

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

A

Main shaft

27
Q

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

A

Coupling flange

28
Q

Protective cover over the coupling bolts or nuts

A

Nut guard

29
Q

Connects the gate servomotor piston to the operating ring

A

Connecting rod

30
Q

Connects the blade servomotor piston to the crosshead

A

Operating rod

31
Q

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

A

Oil head pipes

Turbine Definitions 2 (1 decks)

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