1、RULES FORCLASSIFICATION OFDET NORSKE VERITASVeritasveien 1,NO-1322 Hvik,Norway Tel.:+47 67 57 99 00 Fax:+47 67 57 99 11SHIPS/HIGH SPEED,LIGHT CRAFT ANDNAVAL SURFACE CRAFTNEWBUILDINGSMACHINERY AND SYSTEMSMAIN CLASSPART 4 CHAPTER 4ROTATING MACHINERY,POWER TRANSMISSIONJANUARY 2006CONTENTS PAGESec.1 Sha
2、fting.5Sec.2 Gear Transmissions.23Sec.3 Clutches.35Sec.4 Bending Compliant Couplings.38Sec.5 Torsionally Elastic Couplings.40CHANGES IN THE RULES Comments to the rules may be sent by e-mail to For subscription orders or information about subscription terms,please use Comprehensive information about
3、DNV and the Societys services is found at the Web site http:/Det Norske VeritasComputer Typesetting(FM+SGML)by Det Norske Veritas Printed in NorwayIf any person suffers loss or damage which is proved to have been caused by any negligent act or omission of Det Norske Veritas,then Det Norske Veritas s
4、hall pay compensation to such personfor his proved direct loss or damage.However,the compensation shall not exceed an amount equal to ten times the fee charged for the service in question,provided that the maximum compen-sation shall never exceed USD 2 million.In this provision Det Norske Veritas sh
5、all mean the Foundation Det Norske Veritas as well as all its subsidiaries,directors,officers,employees,agents and any other acting on behalf of DetNorske Veritas.GeneralThe present edition of the rules includes additions and amendmentsdecided by the Board in November 2005 and supersedes the January
6、2005 edition of the same chapter.The rule changes come into force on 1 July 2006.This chapter is valid until superseded by a revised chapter.Supple-ments will not be issued except for an updated list of minor amend-ments and corrections presented in Pt.0 Ch.1 Sec.3.Pt.0 Ch.1 isnormally revised in Ja
7、nuary and July each year.Revised chapters will be forwarded to all subscribers to the rules.Buyers of reprints are advised to check the updated list of rule chap-ters printed Pt.0 Ch.1 Sec.1 to ensure that the chapter is current.Main changes General New IACS requirements for shafts have been adopted
8、.Redefinition of“load cycles”for Baltic ice classes has beenmade.ICE-05 to-15 have to be applied in gear rating calcula-tions and the requirements have been aligned with Pt.5 Ch.1.The ice criteria for elastic couplings have been updated.Monitoring requirements have been changed.Sec.1 Shafting B200:s
9、implified method for calculating shaft dimensions,hasbeen fully revised B300:modified requirements for flanged connection in conse-quence of and reflecting the changed shaft dimension calculationabove,have been introduced B400:requirements relating to all shrink fit connections(incl.propeller)have b
10、een totally revised,with new formulae intro-duced for pull up lengths and diametrical expansionsNew friction capacity criteria for keyless propeller fitting havebeen introduced E300:the requirement for alarm for thrust bearing temperaturehas been modified(lowered to 5 000 kW from 10 000 kW),aswell a
11、s for oil lubricated fluid film bearings H200:requirements related to installation inspections for propel-lers have been modified,reflecting the above design requirementfor shafting and shrink fitting.Sec.2 Gear Transmissions B200:the number for load cycles has been modified(down from3.106 to 106)fo
12、r gear calculations.Sec.5 Torsionally Elastic Couplings B200:the dimension criteria for calculating elastic coupling con-nections have been totally revised.Corrections and ClarificationsIn addition to the above stated rule requirements,a number of detectederrors,corrections and clarifications have b
13、een made in the existingrule text.Rules for Ships/High Speed,Light Craft and Naval Surface Craft,January 2006 Pt.4 Ch.4 Contents Page 3DET NORSKE VERITASCONTENTSSEC.1 SHAFTING.5A.General.5A 100 Application.5A 200 Documentation of shafts and couplings.5A 300 Documentation of bearings and seals.5A 400
14、 Documentation of shafting system and dynamics.6B.Design.6B 100 General.6B 200 Criteria for shaft dimensions.6B 300 Flange connections.10B 400 Shrink fit connections.12B 500 Keyed connections.15B 600 Clamp couplings.16B 700 Spline connections.16B 800 Propeller shaft liners.16B 900 Shaft bearings,dim
15、ensions.16B 1000 Bearing design details.16B 1100 Shaft oil seals.17C.Inspection and Testing.17C 100 Certification.17C 200 Assembling in workshop.17D.Workshop Testing.17D 100 General.17E.Control and Monitoring.17E 100 General.17E 200 Indications and alarms.17E 300 Tailshaft monitoring-TMON.17F.Arrang
16、ement.19F 100 Sealing and protection.19F 200 Shafting arrangement.19F 300 Shaft bending moments.19F 400 Shaft alignment.19G.Vibration.20G 100 Whirling vibration.20G 200 Rotor vibration.21G 300 Axial vibration.21G 400 Vibration measurements.21H.Installation Inspection.21H 100 Application.21H 200 Asse
17、mbly.21H 300 Shaft alignment.21I.Shipboard Testing.21I 100 Bearings.21I 200 Measurements of vibration.21SEC.2 GEAR TRANSMISSIONS.23A.General.23A 100 Application.23A 200 Documentation.23B.Design.25B 100 General.25B 200 Gearing.25B 300 Welded gear designs.26B 400 Shrink fitted pinions and wheels.26B 5
18、00 Bolted wheel bodies.27B 600 Shafts.27B 700 Bearings.27B 800 Casing.27B 900 Lubrication system.27C.Inspection and Testing.28C 100 Certification of parts.28C 200 Pinions and wheels.28C 300 Welded gear designs.31C 400 Ancillaries.31C 500 Assembling.31D.Workshop Testing.32D 100 Gear mesh checking.32D
19、 200 Clutch operation.32D 300 Ancillary systems.32E.Control and Monitoring.32E 100 Summary.32F.Arrangement.33F 100 Installation and fastening.33G.Vibration.33G 100 General.33H.Installation Inspection.33H 100 Application.33H 200 Inspections.34I.Shipboard Testing.34I 100 Gear teeth inspections.34I 200
20、 Gear noise detection.34I 300 Bearings and lubrication.34SEC.3 CLUTCHES.35A.General.35A 100 Application.35A 200 Documentation.35B.Design.35B 100 Torque capacities.35B 200 Strength and wear resistance.35B 300 Emergency operation.35B 400 Type testing.35B 500 Hydraulic/pneumatic system.35C.Inspection a
21、nd Testing.35C 100 Certification.35C 200 Inspection and testing of parts.35C 300 Ancillaries.36D.Workshop Testing.36D 100 Function testing.36E.Control,Alarm and Safety Functions and Indication.36E 100 Summary.36F.Arrangement.36F 100 Clutch arrangement.36G.Vibration.36G 100 Engaging operation.36H.Ins
22、tallation Inspection.36H 100 Alignment.36I.Shipboard Testing.36I 100 Operating of clutches.36SEC.4 BENDING COMPLIANT COUPLINGS.38A.General.38A 100 Application.38A 200 Documentation.38B.Design.38B 100 General.38B 200 Criteria for dimensioning.38C.Inspection and Testing.38C 100 Certification.38C 200 I
23、nspection and testing of parts.38D.Workshop Testing.39D 100 Balancing.39D 200 Stiffness verification.39Rules for Ships/High Speed,Light Craft and Naval Surface Craft,January 2006Pt.4 Ch.4 Contents Page 4 DET NORSKE VERITASE.Control,Alarm,Safety Functions and Indication.39E 100 General.39F.Arrangemen
24、t.39F 100 Coupling arrangement.39G.Vibration.39G 100 General.39H.Installation Inspection.39H 100 Alignment.39I.Shipboard Testing.39I 100 General.39SEC.5 TORSIONALLY ELASTIC COUPLINGS.40A.General.40A 100 Application.40A 200 Documentation.40B.Design.41B 100 General.41B 200 Criteria for dimensioning.41
25、B 300 Type testing.42C.Inspection and Testing.43C 100 Certification.43C 200 Inspection and testing of parts.43D.Workshop Testing.43D 100 Stiffness verification.43D 200 Bonding tests.43D 300 Balancing.43E.Control,Alarm,Safety Functions and Indication.43E 100 Summary.43F.Arrangement.44F 100 Coupling a
26、rrangement.44G.Vibration.44G 100 General.44H.Installation Inspection.44H 100 Alignment.44I.Shipboard Testing.44I 100 Elastic elements.44Rules for Ships/High Speed,Light Craft and Naval Surface Craft,January 2006 Pt.4 Ch.4 Sec.1 Page 5DET NORSKE VERITASSECTION 1 SHAFTINGA.GeneralA 100 Application101
27、Shafting is defined as the following elements:shafts rigid couplings as flange couplings,shrink-fit couplings,keyed connections,clamp couplings,splines,etc.(compli-ant elements as tooth couplings,universal shafts,rubbercouplings,etc.are dealt with in their respective sections)shaft bearings shaft se
28、als.Shafts or couplings made of composite materials are subject tospecial consideration.Sec.1 also deals with the fitting of the propeller(and impellerfor water jet),shaft alignment and whirling.102 The rules in this section apply to shafting subject to cer-tification for the purposes listed in Ch.2
29、 Sec.1 A200.However,they do not apply for generator shafts,except for single bearingtype generators,where documentation may be requested uponrequest in case of high torsional vibrations.Furthermore,theyonly apply to shafts made of forged or hot rolled steel.Shaftsmade of other materials will be cons
30、idered on the basis ofequivalence with these rules.103 Ch.2 describes all general requirements for rotating ma-chinery,and forms the basis for all sections in Ch.3,Ch.4 andCh.5.104 Stern tube oil seals of standard design shall be type ap-proved.A 200 Documentation of shafts and couplings201 Drawings
31、 of the shafts,liners and couplings shall besubmitted.The drawings shall show clearly all details,such asfillets,keyways,radial holes,slots,surface roughness,shrink-age amounts,contact between tapered parts,pull up on taper,bolt pretension,protection against corrosion,welding detailsetc.as well as m
32、aterial types,mechanical properties,cleanli-ness(if required,see B203)and NDT specification,see Ch.2Sec.3 A202.For shafts with a maximum diameter 250 mm(flanges not considered)that shall be quenched and tempered,a drawing of the forging,in its heat treatment shape,shall besubmitted upon request.202
33、Applicable load data shall be given.The load data or theload limitations shall be sufficient to carry out design calcula-tions as described in B,see also Ch.2 Sec.3 A101.This meansas a minimum:P=maximum continuous power(kW)or T0=maximum continuous torque(Nm)n0=r.p.m.at maximum continuous power.For p
34、lants with gear transmissions the relevant application fac-tors shall be given,otherwise upper limitations(see Ch.3 Sec.1G for diesel engine drives)will be used:For direct coupled plants(i.e.plants with no elastic coupling orgearbox)the following data shall be given:For all kinds of plants the neces
35、sary parameters for calculationof relevant bending stresses shall be submitted,see F and G.A 300 Documentation of bearings and seals301 Drawings of separate thrust bearings,stern tube bearingsand oil seals shall be submitted.The drawings shall show alldetails as dimensions with tolerances,material t
36、ypes,and(forbearings)the lubrication system.(Drawings of ball and rollerbearings need not to be submitted.)For main thrust bearingsthe mechanical properties of the bearing housing and founda-tion bolts shall be submitted.If the class notation TMON(tailshaft condition monitoringsurvey arrangement)is
37、applicable,the following additional in-formation is required:lubrication oil diagram for the stern tube bearings withidentified oil sampling point and a description of the sam-pling procedure the position of aft stern tube bearing temperature sensor(s)KA=application factor for continuoushowever,not
38、to be taken less than 1.1,in order to cover for load fluctuationsoperation 1TvT0-+1v0-+=KAP=application factor for non-frequent peak loads(e.g.clutching-in shock loads or electric motors KAice=application factor due to ice shock loads(applicable for ice classed vessels),see Pt.5 Ch.1 of the Rules fo
39、r Classification of ShipsKA=Application factor,torque range(applicable to re-versing plants)As a safe simplification it may be assumed that KA=2 KA or 2 KAP or 2 KAicewhichever is the highest.Where:Tv=vibratory torque for continuous operation in the full speed range(90-100%of n0)v=nominal vibratory
40、torsional stress for continu-ous operation in the full speed range0=nominal mean torsional stress at maximum continuous powermax reversed=maximum reversed torsional stress,which is the maximum value of(+v)in the entire speed range(for astern running),or ice rev(for astern running)whichever is the hi
41、ghest.v=nominal vibratory torsional stress for continuous operation in the entire speed range.See torsional vibration in Ch.3 Sec.1 G300 vT=nominal vibratory torsional stress for transient operation(e.g.passing through a barred speed range)and the corresponding relevant number of cycles NC.See torsi
42、onal vibration in Ch.3 Sec.1 G400.Reversing torque if limited to a value less than T0.with star-delta switch)TpeakT0-peak0-=KAKAP()ice()0max reversed+0-=Rules for Ships/High Speed,Light Craft and Naval Surface Craft,January 2006Pt.4 Ch.4 Sec.1 Page 6 DET NORSKE VERITASand position and way of electri
43、cal grounding has to be in-dicated.302 For all fluid film bearings the maximum permissibleload and maximum permissible operating temperatures withregard to necessary oil film thickness if applicable shall bespecified.303 The maximum permissible lateral movements for shaftoil seals shall be specified
44、.304 Documentation of the manufacturers quality controlwith regard to inspection and testing of materials and parts ofbearings and seals shall be submitted upon request.305 For separate thrust bearings,calculation of smallest hy-drodynamic oil film thickness shall be submitted,see B901.306 Documenta
45、tion for the control and monitoring system,including set-points and delays,see E,shall be submitted forapproval.For requirements to documentation types,see Ch.9.A 400 Documentation of shafting system and dynamics401 Drawings of the complete shafting arrangement shall besubmitted.Type designation of
46、prime mover,gear,elastic cou-plings,driven unit,shaft seals etc.shall be stated on the draw-ings.The drawings shall show all main dimensions asdiameters and bearing spans,bearing supports and any sup-ported elements as e.g.oil distribution boxes.402 Shaft alignment calculations are always to be subm
47、ittedfor approval for propulsion plants with:intermediate shaft diameters of 400 mm or greater for sin-gle screw and 300 mm for multi screw gear transmissions with more than one pinion driving theoutput gear wheel,even if there is only one single inputshaft as for dual split paths shaft generator or
48、 electrical motor as an integral part of thelow speed shaft in diesel engine propulsion.Upon request,shaft alignment calculations may also be re-quired for other plants when these are considered sensitive toalignment.For required content of the of shaft alignment calculations,seeF400.403 For all pro
49、pulsion plants other than those listed in 402,only a shaft alignment specification shall be submitted for in-formation.The shaft alignment specification shall include thefollowing items:bearing offsets from the defined reference line verification data with tolerances(e.g.gap and sag)andjacking loads
50、(including jack correction factors)and con-ditions(cold or hot,submerged propeller,etc.).404 Calculations of whirling vibration or lateral rotor vibra-tion may be required upon request.Normally this means deter-mination of natural frequencies.405 Axial vibration calculations may be required upon re-
