1、MIL-T-24398 (SHIPS) 29 January 1971 (See 6.5) MILITARY SPECIFICATION TURBINE, STEAM AND REDUCTION GEAR, AUXILIARY , GENERATOR-DRIm (NAVAL SHIPBOARD USE) 1. SCOPE 1.1 Scope, This specification covers auxiliary steam turbine and reduction gear (where used) for generator sets for Naval ships and submar
2、ines and includes couplings, and addi- tional equipment, fittings and accessories. Propulsion generator turbines and gears are not included. 1.2 Classification. Generator-drive auxiliary steam turbines shall be of the following types and classes, as specified (see 6.2.2(b) J : Type I - Condensing t.
3、urbine for package type generator sets. Type II - Condensing turbines for conventional (nonpackage) type generator sets. Class A - Turbines and gears for submarines. Class B - Turbines and gears operating on saturated (1 percent wet) steam, for Class C - Turbines and gears operating on superheated s
4、team, for combatant surface Class D - Turbines and gears, operating on superheated steam for non-combatant combatant surface ships. ships. surface ships. 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of
5、the specification to the extent specified herein. SPECIFICATIONS PEDERAL FF-B-171 - Bearings , Ball, Annular (General Purpose). FF-B-185 - Bearings, Roller, Cylindrical and Bearing, Roller, Self-Aligning. FF-B-187 - Bearings, Roller, Tapered. QQ-C-390 - Copper Alloy Castings (Including Cast Bar). QQ
6、-S-624 - Steel Bar, Alloy, Hot Rolled and Cold Finished (General Purpose). QQ-S-630 - Steel, Bar, Carbon, Hot Rolled (Merchant Quality). QQ-S-631 - Steel, Bar, Carbon, Hot Rolled (Special Quality) QQ-S-634 - Steel Bar, Carbon, Cold Finished, (Standard Quality). QQ-S-635 - Steel Plate, Carbon. QQ-5-6
7、91 - Steel Plate, Carbon-Silicon, Carbon Molybdenum and Manganese- QQ-S-699 - Steel Sheets, Carbon, Hot-Rolled, Heavy Gage Structural Quality. QQ-S-763 - Steel Bars, Wire, Shapes and Forgings, Corrosion-Resisting. QQ-S-764 - Steel Bar, Corrosion Resisting, Free Machining. QQ-6-766 - Steel Plates, Sh
8、eet and Strip-Corrosion Resisting. QQ-T-390 - Tin Alloy Ingots and Casting and Lead Alloy Ingots and Castings (Anti-Friction Metal) For Bearing Application. TT-L-201 - Linseed Oil, Heat Polymerized. Molybdenum Alloys Hot Rolled, (Marine Boiler Quality). FCC 2825 Provided by IHSNot for ResaleNo repro
9、duction or networking permitted without license from IHS-,-,-MIL-T-2q398 28 m 9999906 0429383 O m MIL-T-24 39 8 (SHIPS ) MILITARY JAN-W-562 - Wire, Nickel-Alloy, Spring (Heat-Resistant and Age-Hardenable). MIL-S-860 - Steel Forgings for Steam Turbine Rotors. MIL-S-8G1 - Steel Bars, Corrosion Resisti
10、ng, Naval Steam Turbine Parts Use. MIL-S-866 - Steel: Bars and Billets (For Carburizing). MIL-S-869 - Steel Bar, Billet and Forging-Alloy Nitriding Application. MIL-S-870 - Steel Castings, Molybdenum Alloy. MIL-D-1000 - Drawings, Engineering and Associated Lists. MIL-S-1222 - Studs, Continuous Threa
11、d (Bolt Studs); Nuts, Plain, Hexagon; and MIL-C-2212 - Controllers, Electric Motor, A.C. or D.C. and Associated Switching MIL-G-2860 - Glasses, Sight, Flat, Clear, Borosilicate. MIL-G-3087 - Generator Sets, Steam Turbine, (Direct and Alternating Current) MIL-F-3541 - Fittings, Lubrication. MIL-N-778
12、6 - Nickel-Chromium Alloy, Sheet and Strip, Age Hardenable Annealed. MIL-Q-9858 - Quality Program Requirements. MIL-S-15083 - Steel Castings. MIL-P-15137 - Provisioning Technical Documentation for Repair Parts For MIL-C-15345 - Castings, Nonferrous, Centrifugai. MIL-S-15464 - Steel, Alloy, Chromium-
13、Molybdenum; Castings. MIL-L-15719 - Lubricating Grease (High-Temperature, Electric Motor, Ball and Roller Bearings). MIL-C-15730 - Coolers, Fluid, Industrial, Naval Shipboard: Lubricating Oil, Hydraulic Oil, and Fresh Water. MIL-T-16049 - Tachometers: Electric; Self-Generating; Mechanical, Fixed Mou
14、nting and Hand Held; and Vibrating Reed. MIL-S-16113 - Steel Plate, High Tensile (HT) Hull and Structural. MIL-S-16216 - Steel Plate, Alloy, Structural, High Yield Strength (HY-80 and MIL-G-16265 - Gaskets, Metallic-Asbestos, Spiral Wound (For Navy Flanged MIL-S-16974 - Steel Bars, Billets, Blooms a
15、nd Slabs; Carbon and Alloy (For MIL-S-16993 - Steel Castings (12-Percent Chromium) . MIL-M-17059 - Motors, 60-Cycle Alternating-Current, Fractional H.P. (Ship- MIL-M-17060 - Motors, 60 Cycle Alternating Current, Integral IIorsepower MIL-R-17131 - Rods, Welding, Surfacing-. MIL-1-17244 - Indicators,T
16、emperature, Direct-Reading Bimetallic (3 and 5 MIL-L-17331 - Lubricating Oil, Steam Turbine (Noncorrosive) . MIL-S-17849 - Strainers, Sediment, Pipeline, Duplex (With and Without Magnet) . MIL-G-17859 - Gear Assembly, Propulsion (Naval Shipboard Use) . MIL-B-17931 - Bearings, Ball, Annular, For Quie
17、t Operation. .MIL-S-18410 - Steel Bars, Billets and Forgings-Chromium-Molybdenum Alloy. MIL-1-18997 - Indicator, Pressure, Panel Mounted or Case Supported, General Specification. MIL-P-19131 - Pumps, Rotary, Power Driven, Miscellaneous. MIL-S-19434 - Steel Gear and Pinion Forgings, Carbon and Alloy,
18、 Heat Treated,. Naval Shipboard Propulsion Unit and Auxiliary Turbine. MIL-T-19646 - Thermometers, Remote Reading, Self-Indicating Dial, Gas Actuated. MIL-G-19650 - Generator Sets, Steam Turbine, Direct Drive, 2000 KW, 450 Volt, 60 Cycle A.C. MIL-V-20065 - Valves, Angle, Pressure Relief, Naval Shipb
19、oard, For Steam Service. MIL-T-20157 - Tube and Pipe, Carbon Steel, Seamless. MIL-S-20166 - Steel Structural Shapes, Weldable Medium Carbon and High Tensile; MIL-G-21032 - Gaskets, Metallic-Asbestos, Spiral Wound. MIL-G-21410 - Governing Systems, Speed and Load-Sensing (For Electric . MIL-S-21427 -
20、Strainer, Assemblies, Main Steam, High Pressure (Sizes 4 Inches MIL-F-21467 - Fittings, Flareless, Fluid Connection (Shipboard Use). MIL-S-22698 - Steel Plate, Carbon, Structural, For Ships. MIL-C-23233 - Couplings for Propulsion Units, Auxiliary Turbines and Line Steel Bars, Round-High Temperature
21、Service. Devices, Naval Shipboard. (Naval Shipboard Use). Electrical and Mechanical Equipment (Naval Shipboard Use). HY-100). Joints In Piping Systems). Reforging or Other Operations Before Heat Treatment). board Use). (Shipboard Use). Inch Dial). Hull and Structural. Generator Sets). and Above). Sh
22、afts, Naval Shipboard. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-* MIL-T-2439 8 (SHIPS) MILITARY (contd.) MIL-S-23284 - Steel Forgings, Carbon and Alloy, For Shafts, Sleeves, Couplings, MIL-P-23917 - Precipitator (Electrostatic) Vent Fog, Shi
23、pboard Use. MIL-S-24093 - Steel Forgings, Carbon and Alloy Heat Treated. MIL-S-24113 - Steel Plates, Carbon Manganese-Heat Treated by Normalizing Or MIL-1-24137 - Iron Castings , Nodular Graphitic (Ductile Iron) and Nodular and Stocks (Rudders and Diving Planes). Quenching and Tempering. Graphitic (
24、Corrosion Resisting, Austenitic, Low Magnetic Permeability) (For Shipboard Application) . FTU and 30 KSI FTU. MIL-N-25027 - Nuts, Self Locking, 250F, 450F and 800F, 125 KSI ETUI 60 KSI STANUARDS MILITARY MIL-STD-271 - Nondestructive Testing Requirements for Metals. MIL-STD-278 - Fabrication Welding
25、and Inspection; and Casting Inspection and Repair for Machinery, Piping and Pressure Vessels in Ships of the United States Navy. MIL-STD-438 - Schedule of Piping, Valves, Fittings and Associated Pipings Components for Submarine Services. MIL-STD-777 - Schedule of Piping, Valves, Fittings and Associa
26、ted Piping Components for Surface Ships. MS15003 - Fittings, Lubrication (Hydraulic) Surface Check, 1/8 Pipe Threads, MS21208 - Insert, Screw Thread, Coarse and Fine, Free Running, Helical Coil, Steel, Type III. CRUS. DRAW1 NGS MILITARY 810-1385850 - Pipinq, Gase, For All Service, 810-2145504 - Inst
27、ailatinof Electrostatic Vent Foq Precipitator and Surse PUBLICATIONS NAVSIIIPS Blow-Of f Assembly for Propulsion Redction bears. 0283-228-1000 - Bearing Babbitting Procedures. 0900-001-7000 - Fabrication and Inspection of Brazed Piping Systems. 0900-003-8000 - Surface Inspection Standards for Metals
28、. 0900-003-9000 - Radiographic Standards for Production and Repair Welds. (Copies of specifications, standards, drawings, and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.
29、) the extent-ified herein. invitation for bids or request for proposal shall apply. 2.2 Other publications. The following documents form a part of this specification to Unless otherwise indicated, the issue in effect on date of AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) 4- A434 - Quenched and
30、 Tempered Alloy Steel Bars, Hot-Rolled or Cold-Finished. E186 - Reference Radiographs or Heavy-Walled Steel Castings. E208 - Conducting Drop-Weight Test to Determine Nil-Ductility Transition E280 - Reference Radiographs for Heavy-Walled Steel Castings. Temperature of Ferritic Steels. -T (Application
31、 for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, Pennsylvania 19103.) AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) Boiler and Pressure Vessel Code. Section VI11 - Unfired Pressure Vessel. (Application for copies should be addressed
32、 to the American Society of Meahanical Engi- neers, 345 East 47th Street, New York, N.Y. 10017.) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-24398 28 m 9979906 0429385 4 m AMERICAN WELDING SOCIETY (AWS) A2.2 - Nondestructive Testing Symbo
33、ls. (Application for copies should be addressed to the American Welding Society, 345 East 47th Street, New York, N.Y. 10017.) NATIONAL BUREAU OF STANDARDS Handbook H28 - Screw Thread Standards for Federal Services. (Application for copies should be addressed to the Superintendent of Documents, Gover
34、n- ment Printing Office, Washington, D.C. 20402.) AMERICAN NATIONAL STANDARDS INSTITUTE, INC. (ANSI) B16.11 - Forged Steel Fittings, Socket-Welding and Threaded. Y32.3 - Welding Symbols. Inc., 1430 Bxoadway, New York, N.Y. 10018.) (Application for copies should be addressed to the American National
35、Standards Institute, AMERICAN GEAR MANUFACTURERS ASSOCIATION (AGMA) 0OO.XX - Standards and Technical Publications Index. 390.XX - Gear Classification Manual. (Application for copies should be addressed to the American Gear Manufacturers Associa- (Technical society and technical association specifica
36、tions and standards are generally tion, 1330 Massachusetts Avenue, N.W., Washington, D.C. 20005.) available fox reference from libraries. and using Federal agencies.) They are also distributed among technical groups 3. REQUIREMENTS 3.1 Definitions. Unless otherwise specified hereinafter, terms and e
37、xpressions shall be interpreted in accordance with the definitions contained in the following: (a) Websters New International unabridged Dictionary. (b) Mechanical Engineers Handbook by Lionel S. Marks. 3.1.1 Rated speed. Rated speed is the speed required to drive the generator at its rated speed. F
38、or alternating current (a.c.) generator sets, rated speed applies to the speed which produces rated frequency. For direct current (d.c.) generator sets rated speed applies to the identification plate design value of speed for rated power output. 3.1.2 Gear nomenclature. Nomenclature for gearing shal
39、l be.in accordance with the publicationsxted in AGMA 0OO.XX. 3.1.3 Main inion ear or shaft (element). A main pinion, main gear, or main shaft is a respectze!k) resisting steel (bar and forging) 12 Cr corrosion- resisting steel (bar and forging) Titanium and . titanium alloys (bars, f orgiygs and for
40、ging stock) Cr-Mo alloy steel (bar) Carbon steel Cr-Mo V-alloy steel (bar) Alloy steel (forged or bar) 12 Cr corrosion- resisting steel (bar) Carbon steel (forgings ) Steel plate Carbon steel castings Carbon steel (boiler plate) Carbon steel (plate) Carbon steel (shapes) Carbon steel Wate) :arbon st
41、eel (sheets ) 6 limit (OF.) Remarks (maximum) (see 3.2.2) - 900 1000 As approved 775 1000 - I to 350 2 50 I BHN to 350 2 50 BHN See note 4 When approved by NAVSEC on a case basis Magnetic particle test is not required threads not required, Continuous , Also see -3.4.28 See note 3 I Provided by IHSNo
42、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-24378 28 W 7777706 0429388 T MIL-T-2439 8 (SHIPS) Table I - Materials (contd). Part A - Materials of principal parts. Part or service (i) Casings and steam chests (turbine) ( j ) Diaphragms and nozzle blocks (Excl
43、uding partitions and shroud rings ) kpplicable documents 2Q-s-691, class A, B or C grade B or CW NIL-S-15083, MIL-S-2269 8 MIL-S-2 4113 MIL-S-870 QQ-S-69 1 class D MIL-S-15464, class 1 MIL- S- 15 4 6 4 I class 3 MIL-S-15464 i class 2 MIL-S-16993, class 2 QQ-S-766 I class 410 MI L-S- 16 9 9 3 class 1
44、 condi tion A class B or cw classes A, QQ-S-6 31 MIL-S-15083, QQ-S-691 BI c classes D and E QQ-S-691 MIL-S- 8 70 MIL-S-15464, class 1 QQ-s-7631 class 405 or 410 class 2 MIL-S-16993, Material and properties I I Carbon steel 750 See 3.2.7(c) (bar) (O. 35 max. and carbon) I 3.4.42 Carbon steel 775 7 Pr
45、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Table I - Materials (contd). Part A - Materials of principal parts. and shroud rings) (contd) partitions and shroud bands resisting steel (plate, sheet and (m) Packing, labyrinth resisting steel (gland or
46、 (bar and forging) See note 1 diaphragm) hardness 200 and stationary seal strips 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-24378 28 779770b Oq27370 8 MIL-T- 24 39 8 (SHIPS) Table I - Materials (contd). Part A - Materials of principal pa
47、rts. 1 Temperature ! documents properties (maximum) I Part or service t Applicable Material and limit (OF.) (see 3.2.2) (m) Packing, QQ-C-390, Copper alloy, 550 labyrinth i alloy numbers (castings) diaphragm) and E5, E6, E7 stationary seal. and E8 strips (contd) (gland or D5, ElI E3, I (n) Packing s
48、prings (flat and coil) Remarks See note 1 I I ASTM A434. 10.08 carbon max.) I 1000 See 3.2.4 Ni-Cr-Fe 1.00-1.05 Mo alloy 1.00-2.00 Mn I 1.75-2.25 Ti iO.40-1.00 Silicon 1 O. 10-0.5 Vanadium iO.030 (max.) Sulfc !-0.35 (rnax.) Al 0.040 (max.) P jO.001-0.01 Boron 13.5-16.0 Cr 24.0-27.0 Ni 1 balance iron
49、 JAN-W- 562, 74 Ni-15 Cr- MIL-N-7786. 174 Ni-15 Cr- class 1 or 2 7 Fe, 1 Cb (wire) 7 Fe, 1 Cb alloy * (sheet and strip) (o) Pins (for i MIL-S-1222, f Cr-Mo-V alloy notch block type I, i steel (bar) and blocking i symbol B16 1 blades ) (p) Rotating ele- I ! ments, reduc- : tion gear, main I (1) Pinion ;MIL-S-19434, Alloy steel : classes 2 . ( forgings ) : through 6 ! MIL-S-866. Steel bars I classes 4615 i and billets * and 8615 5 (for carburi
