1、. . . “ 23- Januarv 1958 . SUPERSEDING .sp7-3 (in part) . -(see 6.3) I ,MILITARY SPECIFTFATION PUMPS, ROTARY,. POWER DRNEN, MISCELLANEOUS 1. SCOPE l. 1- Scope. - This specification covers positive displacement,. power driven, miscellaneous, rotary pumps I 1.2 Classification. - Pumps shu. be of the f
2、ollowing:cl.asses and types: Class N-2 - Diesel fuel oil.service or transfer. Class N-4 - Purifier pumps and Diesel engine attached fuel oil. Class Or2 - Lubricating oil service or transfer, and fag oil Class 0-3. - Lubricating oil, small attached, for auxilihry machinery, Type I - Cam arid plunger.
3、 . Type III - Screws without timing gears. .Type- IV - Impellers w.ith timing gears. Type V.- Spur, -helical r herringbone gears. Type VI - Spur, helical or herringbone gears with timing gears. . . 6 Type VIII - Internal ge.ar. Type M - Vane (swinging)? transfer. . . ,i; ,“ I. I 2. APPLICABLE DOCUME
4、NTS 2.1 The following specifications, standards ahd drawings, of the issue in effect on date of invitation for bids, -forri a part of this spe Cylindrical; and Bearings, -QQ-I-SSZ - Iron Castings, Gray. QQ-S-gl - Steel, Plate, Marine Boiler. : Roller, Self-Aligning. Provided by IHSNot for ResaleNo r
5、eproduction or networking permitted without license from IHS-,-,-MLL-P+101.31(sBLps) , . “-c_- +_ *FDmL :(.cont#d;) I . QQ-S-751 - Steel, Structural, .(Including Welding). mG-P-15 - Pgcking Tools, Extracting and Tamping; Stuffing BQx Packing and Lantern Glands. GGG-P-78i - PuUeia, Bushing, Bearing,
6、Gear, Wheel Hub - and Cylinder Sleeve, Installing and Removing. . MILITARY MIL-B-233 -B Boxes, Repair ,Parts. JAN-P-735 .- Primer, Paint, Zinc-Chromate, Alkyd ?I$pe. MIL-S-869 - Steel: Forgings for Nitriding ad Nitrided Steel. MIL-SG800 A Steel: Forgings ent (Naval Shipboard Use). Marking-Infmation
7、for Identification of Elctrical, Electronic and ,Mechanicdl3Zquip- ment. MIL-T-15071 - Technical Manuals forMechanical and Elwtrical MIL-S-15083 - Steel; Castings. MIL-E-15.WO.- Enamel, Equipment, Light-Gray (Formula MIL-R-15137“ . Castings. MIL-M-16576 -Metal, Gun; Caiing. . . MIL-P-16789 -. PreseP
8、vation; Packaging, Packing and Marking of Pumps, General, and Associated Repair PartS. 2 “_ _ “ 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-P - NI-L-P-LSL3L 43 m 7779906 O273605 O E. “ MILITARY (contld,) MIL-“17059 - Motors; Alternating-Current
9、, Fractional HP MIL-“17060 - Motors; Alternating-Current, Integral HP MIL-1-17166 - Iron Castings; Nodular Graphitic (Ductile Iron) (for Shipboard Applications). MIL-“17413 - Motor, Direct-Current, Integral HP;(Shipboard MIL-N-17506 - Nickel-Copper-Aluminum Alloy, Wrought. MIL-C-17516 - Copper-Silic
10、on Alloy Bars, Plates, Rods, .(Shipboard Use). (Shipboard Use). Use). Sheets, Strips, Flat Wire, Wire, Forgings, and Structural and Special Shaped, Sections. .ML-T-17523 - Turbine, Steam, General Auxiliary (Naval Shipboard Use). MIL-P-17545 - Primer, Paint, Shipboard, Alkyd-Red Lead . Type, Formula
11、No. 116. .MIL-M-17556 - Motors; Direct Current, Fractional HP (Ship- board Use). MIL-G-17859 - Gear Assembly, Speed Decreaser; and Gear Assembly, Reverse (Naval Shipboard Use). MIIPV-20065 - Valve, Relief (Shipboard Use). NAVY DEPARTMENT General Specifications for Inspection of Material. General Spe
12、cifications for Ships; Section S-1 - Welding and Allied Processes. STANDARDS MILITARY MIL-STD-10 - Surface, Roughness, Waviness and Lay. DRAWINGS BUREAU OF SHIPS B-104 - Flanged Composition Pipe Fittings. . B-105 - Flanged Composition Pipe Fittings. B-110 - Steel Flahges for Steel Tubing - 10 Inches
13、 and Smaller (150 P. S. I. , 650F. ; Over 10 Inches 50 F. S. I. , 650F. ). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-l$lSI(SHIPS) BUREAU OF SHIPS (contd. ) . B-153 - Packings and Gaskets, Application of. B-176 - Flanges, Composition, Si
14、lver Brazing. B-177 - Flanges, Composition, Silver Brazing. B-214 - Root Connections for Attaching Piping. (Copies of specifications, standards, drawings, and publications required by contractors in connection with specific procurement functions should be obtained from the procuring agency or as dir
15、ected by the contracting officer.) 2.2 Other publications. - .The following document forms a .part of this specification. Unless otherwise indicated the issue in effect on date of invita- tion for bids shU apply. NATIONAL BUREAU OF STANDARDS . Handbook H28 i Screw-Thread Standards for .Federal Servi
16、ces. (Application for copies should be addressed to the Superintendent of Documents, Government Printing pffice, Washington 25, D. C, ). 3. REQUIREMENTS . 3.1 Qualification. - Class N-2 and class 0-2 pumps furnished under this specification shall be a product which has been tested and has passed the
17、 qualification tests specified herein (see 6.2). a 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.2 shall be shall be Pump characteristics. - The general range of pump characteristics in accordance with table I. Characteristics of pumps to be pr
18、ocured specified in the individual contracts or orders. Tabk I -. Pump charactefistic8. -. Discharge : ;Class I pressure : o . . : Suction :. v1sc0sity Rated : lift at liquid.far range of capacity : rated . test :capacity t : purposes . . : Range of .: liquid : tures :. type of : under : drive : ope
19、rating o tempera- Preferred conditions 1 . . . : N-2 : N-4 . . o : 0-2 : 0-3 . . . . : P.s.i. g. : 10 - : 10 - . 50 50 o : 25 - 100 o : 10 - 50 . . . o . o . o . . . . G:p. m. : Inches : of :mercury . 10 - 50 : 10 - 15 1 - 15 : 10 - 15 o o . o 15 - 300 : 10 - 20 1-15 : 5-10 . . . . . . ssu : .Degree
20、s : Fahrenheit . 33 - 100 33 - 500 : 35 - 100 : 35 - 180 . o : 130 - 5000 : 60 - 160 i 75- 1700; 60 - 160 o . 0 . o . . . o o . : Motor :Attached to : unit being : served : Turbine : motor :Attached to : unit being : served . . . . o . . . . . . . . o . e o . o . Referred to centerline of pump rotor
21、s. Temperatures do not necessarily correspond with the viscosity range, but indicate temperature pumps may be expected to encounter in service. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P- 19 13 l(SHIPS) . . .3.3 General design. - . . “ .
22、3. S. i The principle of reliability is paramount an+ i19 compromise of this principle shall be made with any other basic requirements of design. It is the inten- tion of this specification to obtain pumps of such design .that they will operate aver a lmg period of years with a minimum of servicing.
23、 Where wear or erosion is unvoid- ab1.e the parts subjected to such wear or erosion shall be of the best materials availa- ble fm the purpose in order to reduce these detrimental effects to a minimum. The design and construction of all pumpsshall be the most compact consistent with the follo-aing re
24、quirements: (a) Reliability. (b) Accessibility for repair. (c) Resistance to wear or- corrosion. (d) Economy. (e) Satisfactory operation when inclined as follDws, uniess other- wise specified in the contfact or order: Surf ace ships - (m degrees from the normal horizontal pbsi- tion in. the fore and
25、 aft plane (permanently inclined). inclined). vertical to either side. from the normal horizontal plane (2) Up to 15 degrees to either side (permanently (3) With the. ship rolling up to 45 degrees fromthe (4) With the ship pitching 10 degrees up and dbwn . . . . : Submarines :Submerged: Snorkel Surf
26、ace : : Wim.(peliPanent) : 30 degrees : 7 degrees : -7 degrees: : Pitching : 10 degrees : 10 .degrees : 10 degrees . : Time of complete : . : pitch cycle : 4 seconds : 4 seconds : 4 seconds: : List (perminent) : 15 degrees : 15 degrees :I5 degrees: : Rolling : 30 degrees: 30 degrees :60 degrees: : T
27、ime of complete: . : roll cycle : 12 seconds: 12 secmds : 8 seconds: Note 1. - Degrees indicated are measured from the and rom the narmal horizontal plane up or down from trim and pitch. the shaft in the fore and aft positim. . . ., . . . . . . vertical to either side from list and roll, Nqte 2. - H
28、xizontal pumps are nmmally in a ship with 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-“ 3.3.2 Shockproofness. - _. 3.3.2.1 All equipment .$hall be designed to withstand shock Every attempt shall be made to- design .the equipment to resist shock
29、as specified in graphs, A, B, and C, shown on figurel, it being understood .that these shacks -P-l913l(SHLPS) 1 3; 3.6 All pumps shall be self-priming- and capable of rem.oving air from the I suction lines. The- pumps may at times be. required to handle oils lighter than those specified, water, sedi
30、ment and sludge,. such as may settle out and accumulate in the bottom of.tanks; Hence, .where the lubrication of the pump is supplied by the fluid pumped, the bearings, rotors, and gears shall be of such design and materials that the pumps will operate in a manner satisfactory to the bureau or agenc
31、y concerned when pumping such fluids for limited periods (see 3.3.8,Q1.1).- 3.3.7 Mountins. - 3.37.1 Pump uilts shall be horizontally or vertically mounted, as specified (see 6.- 1). a t Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.MLdP-l9131(SHI
32、PS) - - . 3.3.7.2 Each horizontal pump and driving unit shall be mounted on a common bedplate. 3.3.7.3 Unless otherwise specified in the contract or order, each vertical pump and driving unit shall be base mounted or table mounted, as specified (see .6.1). 3.3.7.4 For the base mounted units, the bas
33、e may be either integral with the pump casing or a separate piece, and the base shall have provision for bolting to a foundation. 3.3.7.5 For the table mounted units, the table mouit may be either integral with the pump casing or bracket, or it may be a separate piece. 3.3.7.6 A suitable bracket sha
34、ll be provide,d between the pump and driver of vertical units. 3.3.7.7 When so specified, class N-4 and 0-3 pumps may be attached directly to the units being served (such as an engine or purifier) instead of having their own bedplates. These pumps may also be driven by the units served. 3.3. 7.8 Eed
35、plates, bases, table mounts and brackets shall be designed so that they shall be sufficiently rigid to permit handling, shipment and installation of the unit oilboard ship, without disturbing the alignrdcnt of the assembled units, and such that the normal distortion, weaving or vibration of the supp
36、orting structures onboard ship cwot cause misalignment hetwoen the puznps and driving mi; or its driving unit irori2 the bedplate or base. 9 P Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.3.8 Bearings, - 3.3.8. 1 -dial bearings. - Radial bearing
37、s may be of the ball, roller or sleeve type. 3.3.8.2 Ball or roller bearings for radial loads and the installation thereof shall oc in accordmce with Specifications FF-B-171 and FF-B-185. 3.3.8.3 Sleeve radial bearings may be of the fixed or self aligning type as approved for design and application
38、by the bureau or agency concerned. Ample bearing surface shall be provided for each sleeve bearing. 3.3.8.4 Thrust bearings, - Pumps shall be designed to counteract any unbalaneed hydraulic or mechanical thrust under normal service condition. In this connection consider however deterioration to a po
39、int requiring replacement of the bearings immediately after the test W ill not disqualify the bearings. S. 3.8.9.2 Externally mounted. ball or roller bearings shall be lubricated in accordance with Specification FF-B471 or FF-B-185, as applicable. . 3.3.8.10 The number, type and arrangement of beari
40、ngs shall be as approved by the bureau or agency concerned. 3.3.9 Piping and valves. - 3.3.9.1 All suction, discharge, and relief valve connections on class 0-2 and N-2 pumps shall be. flanged; the flanged connections shall be in accordance with Drawings B-104, B-105, B-110, B-176, and B-177, as app
41、licable. Suction and discharge pressure gage connections shall be flanged; the flange connections shall be in accordance with Drawing B-214. 3.3.9.2 Gland seal piping shall be 1/8 inch iron pipe size (i. p; s. ) extra heavy steel pipe, with steel valves, steel fittings and steel. unions, all screwed
42、. 3.3.10 Drains. - The bottom of. all pump casings or heads shall be provided , with a drain connection. Drains shall be fitted to drip pockets. 3.3.11 Relief valves. - 3.3.11.1 Relief valves shall be in accordance with Specification MIL-V-20065. 11 Provided by IHSNot for ResaleNo reproduction or ne
43、tworking permitted without license from IHS-,-,-, - fl1L-P-lyl31 93-w qqq7qob 0273blq 1 * MIL-P-l913I(SMFU, 3.3.11:2 Unless otherwise specified in the contract or order, all pumps shall be fitted on the discharge side with relief valves, of size and setting approved by the bureau or agency concerned
44、. The relief valve shall be externally adjustable and of such size that it will pass the full rated capacity of the pump with. a pressure rise of not more than 10 percent over the rated discharge pressure. 3.3. 11.3 The relief valve shall be installed within the pump casing. The valves shall be of s
45、uch a design that leakage of oil from the spring case or leakage of air into the discharge side of the valve is prevented. 3.3.12 Casing and heads. - 3.3.12.1 Casings, also referred to as cylinders, are those parts which enclose the rotors. The bores of the casings are parallel to the rotors. 3.3.12
46、.1.1 Casing liners, also referred to as rotor housings, are replaceable parts located between the casing bore and the rotors. 3.3.12.1.2 Casing liners, or casings if not fitted with liners, are wearing parts (see 3.9.2.1). 3.3.12.1.3 Casings shall be made as light as possible consistent with strengt
47、h and shall be ribbed and braced on the outside as necessary to give stiffness-and rigidity under the working pressure. The interiors shall be smooth cored with easy bends whercver the direction of low is changed. 3.3.12.2 Tt is preferred that pump casings for pumps having a capacity of 50 gallons p
48、er minute or more be equipped with easily removable liners. However, consideratin will be given to pumps not having this feature. Either liners or casings shall be supplied as repair parts as specified in 3.9 covering wearing parts. 3.3.12.3 Suction and discharge openings shall be cast integral with
49、 the casings or heads, shall have machined and scraped or ground flange faces suitable for metal to metal joints, .and shall be located 2s -approved by the bureau or agency concerned. 3.3.12.4 The heads shall have accurately machined faces with a ground or scraped finish. Joints between casings and.heads may be made up either metil to metal or with a t
