Page 378 - Practical Machinery Management for Process Plants Major Process Equipment Maintenance and Repair

Steam Turbines and Turboexpanders 357

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FIGURE ITEM NO. DESCRIPTION QUANTITY
4-12-1 Steam Chest Body 1
2 STEAMSTRAINER I
3 Trip Valve Cover I
4 Can Screw 8
RESETTING
LEVER
STAIIVER
5 STAIIVER RING, AUX RESETTING LEVER 2
RING,
AUX
PIN, RESET LEVER
6 PIN, RESET LEVER I
RESET
LEVER
BUSHING,
7 BUSHING, RESET LEVER I
SET SCREW
SCREW
SET
8 __ . - __ - 1
..
9 SPRING, AUXILIARY RESETLEVER I
10 AUXILIARY RESETTING LEVER I
I1 Resetting Lever I
12 WETTINGLEVERKNlpEEDGE 1
13 Machine Screw 1
I4 SPRING, CLOSING 1
15 Lock Nut, Trip Valve Stem 1
16 BUSHING, TRlP VALVE, LOWER 2
17 TRIP VALVE ASSEMBLY 1
18 Governor Valve 1
19 Pin, Governor Valve Stem 1
20 Governor Valve Stem i
21 Governor Valve Cover l*
(High Pressure)
22 Bushing, Governor Valve Cover I
*23 PACKING (HIGH PRESSURE) I Set*
24 Lantern Ring I*
25 Follower 1
26 Machine Bolt, Governor Valve Cover 10
27 VALVE SEAT I
28 BUSHING, VALVE SEAT (NOT SiQW 1
29 Weld Block 2
30 Hand Trip Lever I
3i LATCH, KNIFE EDGE I
32 SPRING, TORSION I
33 Shoulder Stud I
*34 PACKING (LOW PRESSURE) I set*
* 35 Governor Valve Cover (Low Pressure) 1'
*36 CONNECTION VALVE STEM I*
37 Jam Nut, Valve Stem 1
38 Stud, Inlet 8
39 Nut, Inlet 8
40 Spring Seat (Top) 1
41 Spring, Backsetting 1
42 Spring Seat (Bottom) I
43 Bushing, Trip Valve, Upper 1
44 Washer 2
45 Block, Resetting Lever 2
46 Connection, Backsetting I
47 Roll Pin, Knife Edge I
48 Retainer Ring I
+49 Spring, Auxiliary Closing I*
50 Machine Bolt, Strainer 1
51 Single Seated Trip Valve 1,
52 COVERNOR VALVE & STEM ASSEMBLY 1
Indicates part not used on all turbines ar variable quantities.
+ Item 49 indicates the addition of a second spring used on turbines operating E:
250 psig or higher maximum inlet steam pressure.
Figure 84. Continued.