Turbine Parts Definitions Flashcards

1
Q

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

A

Runner hub

1G

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2
Q

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

A

Adjustable runner blades

1H

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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

1M

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4
Q

Conical lowermost extension on the runner which streamlines the turbine

A

Runner cone

2

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5
Q

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

A

Gate operating ring

3C

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6
Q

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

A

Wicket gates

3D

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7
Q

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

A

Gate stem

3E

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8
Q

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

A

Gate lever

3F

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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 pen

A

Shear lever

3G

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10
Q

Member connecting operating ring to the shear lever

A

Gate link

3H

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11
Q

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

A

Shear pin

3K

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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

4A

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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

4B

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14
Q

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

A

Inner head cover

4C

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15
Q

Stationary ring supporting the lower gate stems

A

Bottom ring

5

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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

6

17
Q

Streamline members which support the stay rings and direct the water through the wicket gate

A

Stay vanes

6A

18
Q

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

A

Discharge ring

8

19
Q

The water passage from the reservoir to the stay ring

A

Scroll case

9A

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

18C

21
Q

Metal liner surrounding the wheel pit and lining the concrete wall

A

Pit liner

19A

22
Q

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

A

Turbine walkway

20

23
Q

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

A

Servomotor

21

24
Q

Wearing the same boy that is mounted inside the head cover which provides radial loading support for the main shaft

A

Turbine guide bearing

23

25
Q

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

A

Packing box

24

26
Q

The member which transmits the power from the runner to the generator

A

Main shaft

28

27
Q

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

A

Coupling flange

28A

28
Q

Protective cover over the coupling bolts or nuts

A

Nut guard

28B

29
Q

Connects the gate servomotor piston to the operating ring

A

Connecting rod

35

30
Q

Connects the blade servomotor piston to the crosshead

A

Operating rod

40

31
Q

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

A

Oil head pipes or lines

42