ImageVerifierCode 换一换
格式:PDF , 页数:6 ,大小:163.86KB ,
资源ID:433307      下载积分:5000 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
支付方式: 支付宝扫码支付 微信扫码支付   
注意:如需开发票,请勿充值!
验证码:   换一换

加入VIP,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【http://www.mydoc123.com/d-433307.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: 微信登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(ANSI ASTM F841-1984 Standard Specification for Thrusters Tunnel Permanently Installed in Marine Vessels《船舶上永久性安装的校准船身用火箭、隧道的规范》.pdf)为本站会员(fuellot230)主动上传,麦多课文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文库(发送邮件至master@mydoc123.com或直接QQ联系客服),我们立即给予删除!

ANSI ASTM F841-1984 Standard Specification for Thrusters Tunnel Permanently Installed in Marine Vessels《船舶上永久性安装的校准船身用火箭、隧道的规范》.pdf

1、Designation: F841 84 (Reapproved 2011) An American National StandardStandard Specification forThrusters, Tunnel, Permanently Installed in Marine Vessels1This standard is issued under the fixed designation F841; the number immediately following the designation indicates the year of originaladoption o

2、r, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope

3、1.1 This specification supplies general characteristics andinterface details of propeller type, fixed-tunnel thruster unitspermanently installed in marine vessels or structures.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated in

4、each system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.NOTE 1This specification supplies only general design, interface, andpurchase information and does not include

5、 requirements for use, thrustercontrols, or associated equipment.The purchaser of the thruster equipmentspecified herein is cautioned that he must properly correlate the operatingrequirements with the thruster specified.1.3 This standard does not purport to address all of thesafety concerns, if any,

6、 associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A296 Specification for Corrosion-Resistant Iron-Chro

7、miumand Iron-Chromium Nickel and Nickel-B Alloy Castings;Replaced by A 743, A 744 (Withdrawn 1980)3F25 Test Method for Sizing and Counting Airborne Particu-late Contamination in Cleanrooms and Other Dust-Controlled Areas2.2 American Bureau of Shipping:4ABS Rules for Building and Classing Steel Vesse

8、ls2.3 ISO Document:5ISO Recommendation ISO/DIS 48411 (Draft)3. Definitions of Terms Specific to This Standard3.1 thrustera device constructed such as to provide a forceor thrust of controlled variable magnitude and direction to amarine vessel or structure, usually, but not limited to, apropeller mou

9、nted within a tunnel located below water level.3.2 fixed pitch(FP) a propeller in which the blades are partof, or are rigidly attached to, the hub such that the propellerpitch is constant for a given radius.3.3 controllable pitch(CP) a propeller in which the bladesare attached to a mechanism within

10、the hub by means of boltsor fasteners, so that controlled movement of the mechanismcauses the blades to change pitch in unison.3.4 tunnela part of thruster assembly of circular crosssection which houses structure supporting a propeller and drivemechanism.3.5 peak powerhighest horsepower developed by

11、 theprime mover, or as limited by the thruster manufacturer.3.6 continuous dutyoperation of the thruster continuouslyat any power range, up to manufacturers rating, for extendedperiods, but not to overlap into recommended maintenanceintervals.3.7 intermittent dutyoperation of the thruster at peakpow

12、er or RPM levels, or both, for periods not exceeding 1 hfollowed by periods of1hatthecontinuous rating or less, withtotal running time not exceeding8hin24h.3.8 landing barspermanent attachments, usually in theform of plates welded to the tunnel during manufacture,intended to provide joining faciliti

13、es for deck plates orbulkheads, or both, at installation. Landing bars are neither1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.11 onMachinery and Piping Systems.Current edition approved April 1,

14、 2011. Published April 2011. Originallyapproved in 1984. Last previous edition approved in 2006 as F841 84 (2006).DOI: 10.1520/F0841-84R11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume

15、 information, refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from American Bureau of Shipping (ABS), ABS Plaza, 16855Northchase Dr., Houston, TX 77060, http:/www.eagle.org.5Available from

16、American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1intended to be part of the support structure for the thruster, norprovide s

17、upport or transmit forces from the vessel structure tothe thruster.3.9 prime moverthe motor(s) or engine(s) providing thepower to drive the thruster.3.10 grid barsbars installed at the tunnel entrances in theform of a mesh to prevent large objects from passing throughthe thruster tunnel. The area oc

18、cupied by the grid bars shall notexceed 6 % of the tunnel cross-sectional area.4. Classification4.1 Thrusters manufactured in accordance with this specifi-cation shall be identified as follows:4.1.1 Type IFixed pitch.4.1.2 Type IIControllable pitch.4.2 Each type of thruster may be manufactured to th

19、efollowing grade:4.2.1 Grade 1Intermittent duty for docking and naviga-tion.4.2.2 Grade 2Continuous duty for stationkeeping or dy-namic positioning.5. Ordering Information5.1 Requests for quotation and purchase orders shall specifythe following (in absence of specific requirements in orderingdata, t

20、he unit will be provided only as specified herein):5.1.1 Description of thruster.5.1.2 ASTM designation and date of issue.5.1.3 Type.5.1.4 Grade.5.1.5 Input Shaft AngleRefer to Fig. 1.5.1.6 Tunnel ExtensionsRefer to Fig. 2.5.1.7 Landing bars or other weldments to the thruster to beshown in a sketch

21、or drawing provided by the purchaser.5.1.8 Type of prime mover.5.1.9 Input HP and RPM to thruster.5.1.10 Material Options for Hub and Blades:5.1.10.1 Ni-Al Bronze ABS Type 4.5.1.10.2 Stainless steel Specification A296 72 GR CF-3 orCF-8C or other ABS approved material.5.1.10.3 Manganese bronze ABS Ty

22、pe 2.5.1.11 Blade hatch.5.1.12 Instruction books (unless otherwise specified, sixcopies in English).5.1.13 Tunnel insert (erosion liner).5.1.14 Painting or coating, external (water contact surfaces).5.1.15 Painting or coating, internal (inside hull).5.1.16 Blade BalancingManufacturer standard practi

23、ce orISO Recommendation F484 Class II Draft International Stan-dard ISO/DIS 484/2.5.1.17 Special tools.5.1.18 Spare parts.5.2 As a minimum, the following vessel particulars shall befurnished when the thruster manufacturer is required to deter-mine the thruster size; other particulars may be required

24、 by thethruster manufacturer.5.2.1 Vessel type.5.2.2 Applicable classification society.5.2.3 Length at waterline.65.2.4 Width at waterline.65.2.5 Draft, loaded forward after or draft, ballast forwardafter.5.2.6 Dimension of keel to thruster centerline.5.2.7 Dimension of bow at waterline to thruster

25、centerline.5.2.8 Beam at the thruster centerline.5.2.9 Vessel displacement.65.2.10 Vessel service and operating environment.5.2.11 Whether grid bars are to be installed.6. Materials and Manufacture6.1 General RequirementsThe tunnel shall be made oftested steel of ABS quality or equal, fabricated, ca

26、st or forged,or a combination thereof. All structural welding shall be inaccordance with the applicable regulatory agency or thethruster manufacturers recommendations or both. All weldsexposed to (sea) water shall be overlayed with weld metalcontaining 2 % nickel, minimum. The minimum tunnelmaterial

27、 thickness shall meet applicable classification societyrequirements. A replaceable insert may be provided in thetunnel in way of the propeller tips to prevent erosion of thetunnel wall (Fig. 3). The minimum width of the insert shallbe10 % of the propeller diameter. If an insert is not used, thetunne

28、l thickness in way of the blades, and for a minimumlength of 10 % of the tunnel diameter, shall be increased by atleast 10 % of the required thickness. Reenforcement rings/stiffeners may be applied at each end of the tunnel by themanufacturer. The rings may or may not become part of thejoint detail

29、to the tunnel extension.6.2 Propeller blades and hub may be one of the followingmaterials or other material approved by the applicable classi-fication society and shall be specified in the ordering data.6.2.1 Ni-Al Bronze ABS Type 4.6.2.2 Stainless Steel Specification A296 77 GR CF-3 orCF-8C.6.2.3 M

30、anganese Bronze ABS Type 2.6.3 All fasteners exposed to (sea) water shall be of monel,stainless-steel, or bronze alloy, unless otherwise specified inthe ordering data.6.4 All materials shall be free of imperfections and defectsthat adversely affect serviceability.6.5 All steel surfaces exposed to (s

31、ea) water shall becleaned, painted, or coated in accordance with manufacturerscommercial practice or as otherwise specified in ordering data.6.6 All steel surfaces that will be within the hull of thevessel shall be cleaned, painted, or coated in accordance withmanufacturers commercial practice or as

32、 otherwise specifiedin ordering data.6.7 The thruster shall consist of a propeller mounted withina strongly fabricated circular tunnel. The propeller will besecured to a shaft that is rigidly supported in oil lubricatedantifriction bearings.6With reference to fully loaded design conditions.F841 84 (

33、2011)26.7.1 A thrust bearing shall be contained within a housingthat is securely attached to the tunnel section such as totransmit the thrust developed by the propeller.6.7.2 A drive mechanism shall be provided to transmitpower to the propeller. This also shall be within the housingand be oil lubric

34、ated.6.7.3 The right-angle drive shafting and propeller hub shallbe removable, if necessary, for inspection or repair withoutremoving the tunnel from the vessel.6.7.4 The propeller shall be statistically balanced as speci-fied in the ordering data.6.7.5 For Type 2 controllable pitch thrusters, the t

35、unnel maybe equipped with a removable hatch over the propeller topermit withdrawal of blades. This requirement shall be speci-fied in the ordering data.6.8 The tunnel shall be attached to the ships structure bymeans of tubular extensions that are part of or are welded to theends of the tunnel. No ot

36、her welding on the assembled unit ispermitted without the manufacturers approval in view ofpossible damage to the alignment of drive mechanism andbearings. Should other weldments, for example, landing bars,be required, they shall be specified by the purchaser before thetunnel manufacture.NOTE 1The t

37、hruster will be supplied without the blade hatch unless otherwise specified in the ordering data.FIG. 1 Input Shaft AngleF841 84 (2011)36.9 A lubrication system shall be provided for bearings andgears. Seals shall be provided to prevent leakage of oil out ofthe thruster and ingress of (sea) water in

38、to the thruster. Apressure shall be maintained within the thruster that is at least1 psig (7 kPa) greater than the outside water pressure measuredat the thruster centerline.NOTE 1Ordering InformationDimensions in the table shall be supplied by the vendor, except dimensions EX and EY shall be specifi

39、ed by thepurchaser.NOTE 2The thruster will be supplied without the blade hatch and without the tunnel extensions unless otherwise specified in the ordering information.FIG. 2 Thruster DimensionsLegend:T = Minimum tunnel material thickness to meet applicable classification society requirementsD = Tun

40、nel diameter (inside)P = Propeller diameterS = Tunnel insert (erosion liner) thickness316 in. (5 mm) minimum for D # 60 in. (1.52 m)14 in. (6 mm) minimum for D 60in.(1.52m)FIG. 3 Tunnel Insert (Erosion Liner) or Alternative MethodF841 84 (2011)47. Other Requirements7.1 Propeller Design (General), sh

41、all be based on standardseries model tests carried out at a recognized marine laboratoryor by substantiated test data from previous application.7.2 The thruster manufacturer shall submit, as a minimum,the following plans for review by the purchaser.7.2.1 Installation drawing.7.2.2 Outline drawings o

42、f major assemblies showing overalldimensions, interface details, and weights.7.3 It is recommended that an hour meter be installed in thesystem such that preventive maintenance and records ofoperation may be maintained.7.4 One Set of Special Tools, as deemed necessary by themanufacturer, for removin

43、g the propeller hub and blades,shafting and right-angle drive parts shall be provided unlessotherwise stated in the ordering data.7.5 One Set of Normal Onboard Spare Parts, as recom-mended by the manufacturer for one years service shall beprovided unless otherwise stated in the ordering data.7.6 Cop

44、ies of instruction books of standard commercialformat shall be provided, as required by the ordering data.Instruction books shall describe the installation, startup,operation, planned maintenance, troubleshooting, assembly,and disassembly of the manufacturers equipment.8. Dimensions and Ratings8.1 I

45、nterface dimensions of thrusters shall be provided bythe vendor and shall include at least the dimensions defined inFig. 2 and Fig. 1.8.2 At its normal continuous rating, the thruster shall becapable of producing a minimum thrust of 23 lb/hp (0.137N/W). The input horsepower per square foot (propelle

46、r diskarea) shall not exceed 50, for example, horsepower per areashall be 50 (401.5 kW/m2). Propeller tip speed shall notexceed 6300 ft/min (1920 m/min).8.3 The nominal thrust of 23 lb/hp (0.137 N/W) does nottake into account losses for added tunnel length, bends, or gridbars and assumes a minimum s

47、ubmergence of one propellerdiameter to the thruster centerline.9. Workmanship9.1 All workmanship shall be workmanlike and of accept-able commercial marine standard in all respects, and allmaterials, machinery, pieces, or parts specified shall be ofrecent manufacture and unused except for normal test

48、ing asrequired.10. Inspection and Shop Testing10.1 The manufacturer shall test the thruster unit to ensureproper assembly, alignment, and functioning of the internalmechanisms.10.2 The manufacturer shall inform the purchaser at leastten days before testing such that the testing may be witnessedshoul

49、d the purchaser so desire.10.3 During manufacture of the thruster, inspection recordsshall be made of at least the following:10.3.1 Backlash, alignment, and pattern of gear (if used).10.3.2 Blade tip clearances, each blade at eight equallyspaced intervals.10.3.3 For units with detachable blades, the blade weightand balance.10.3.4 Mounting and clearance dimensions.10.4 Final test and inspection shall include at least thefollowing:10.4.1 FP Units:10.4.1.1 Spin test in air of sufficient duration to verifysatisfactory operation,10.4.1.2 Oil

copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
备案/许可证编号:苏ICP备17064731号-1