1、6 Campus DriveFirst Floor NorthParsippany, New Jersey07054-4406 www.Pumps.org ANSI/HI8.18.5-2015ANSI/HI 8.18.5-2015American National Standard forDirect-acting (Steam) Pumpsfor Nomenclature, Definitions, Application, and OperationThis page intentionally blank.ANSI/HI 8.18.5-2015American National Stan
2、dard forDirect-acting (Steam) Pumpsfor Nomenclature, Definitions,Application, and OperationSponsorHydraulic Institutewww.Pumps.org Approved December 22, 2014American National Standards Institute, Inc.Hydraulic Institute Standards, Copyright 1997-2015, All Rights ReservedApproval of an American Natio
3、nal Standard requires verification by ANSI that therequirements for due process, consensus and other criteria for approval have been metby the standards developer.Consensus is established when, in the judgement of the ANSI Board of StandardsReview, substantial agreement has been reached by directly
4、and materially affectedinterests. Substantial agreement means much more than a simple majority, but not nec-essarily unanimity. Consensus requires that all views and objections be considered,and that a concerted effort be made toward their resolution.The use of American National Standards is complet
5、ely voluntary; their existence doesnot in any respect preclude anyone, whether he has approved the standards or not,from manufacturing, marketing, purchasing, or using products, processes, or proce-dures not conforming to the standards.The American National Standards Institute does not develop stand
6、ards and will in nocircumstances give an interpretation of any American National Standard. Moreover, noperson shall have the right or authority to issue an interpretation of an AmericanNational Standard in the name of the American National Standards Institute. Requestsfor interpretations should be a
7、ddressed to the secretariat or sponsor whose nameappears on the title page of this standard.CAUTION NOTICE: This American National Standard may be revised or withdrawn atany time. The procedures of the American National Standards Institute require thataction be taken periodically to reaffirm, revise
8、, or withdraw this standard. Purchasers ofAmerican National Standards may receive current information on all standards by call-ing or writing the American National Standards Institute.Published ByHydraulic Institute6 Campus Drive, First Floor NorthParsippany, NJ 07054-4406www.Pumps.org Copyright 201
9、5 Hydraulic InstituteAll rights reserved.No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without prior written permission of the publisher.Printed in the United States of AmericaISBN 978-1-935762-31-7AmericanNationalStandardRecycledpaperHydr
10、aulic Institute Standards, Copyright 1997-2015, All Rights ReservediiiContentsPageForeword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v8 Direct-acting (steam) pumps . . . . . . . .
11、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18.0 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18.1 Types and nomenclature. . . . . . . . . . . . . .
12、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18.1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18.1.2 Types . . . . . . . . . . . . . . . . . . . . . . . . .
13、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18.1.3 Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28.1.4 Drive (steam) end . . . . . . . . . . . . . . . . . .
14、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78.2.1 Stroke (L) . . . . . . . . . . . . . . . . . . . . . .
15、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78.2.2 Pressures (p) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108.2.3 Suction conditions. . . . . . . . . . . . . . . . . .
16、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118.2.4 Pump efficiency (p). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128.3 Design and application . . . . . . . . . . . . . . . . . . . . . .
17、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138.3.1 Purpose. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138.3.2 Typical services . . . . . . . . . . . . . . . . . . . . . . . . . . .
18、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138.3.3 Pump speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138.3.4 Acceleration head (hacc), acceleration pressure (pacc) . . . . . . . . . . . .
19、 . . . . . . . . . . . . . . . . . . . 148.4 Installation, operation, and maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158.4.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20、. . . . . . . . . . . . . 158.4.2 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168.4.3 Location of pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21、 . . . . . . . . . . . 168.4.4 Protection of pump against seepage or flood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168.4.5 Provision for servicing space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168.4.6
22、 Hydraulic action direct-acting (steam) piston pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178.4.7 Gaskets, pipe dope, and pipe tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178.4.8 Drive (steam) end lubrication . . . . .
23、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188.4.9 Plunger or piston rod packing installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188.4.10 Cup-type pistons. . . . . . . . . . . . . . . . . . . . . . . .
24、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248.4.11 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268.4.12 Main drive (steam) valve setting . . . . . . . . . . . . . . . .
25、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Hydraulic Institute Standards, Copyright 1997-2015, All Rights Reservediv8.4.13 Drive (steam) end lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278.4.14 Drains . .
26、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278.4.15 Malfunctions, cause and remedy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278.5 Reference and source mat
27、erial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Appendix A Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Figures8.1.2 Types of direct-ac
28、ting (steam) pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18.1.2.3a Direct-acting, horizontal, double piston (steam) pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28.1.2.3b Double-acting plunger type liqu
29、id end . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28.1.2.6 Horizontal simplex direct-acting (steam) pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38.1.2.7 Horizontal duplex direct-acting (steam) pump.
30、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38.1.3.3.3 Valve plate type liquid end . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48.1.3.3.4 Side valve pot type liquid end (end view, duplex
31、pump) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48.1.4 Drive (steam) end horizontal duplex pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58.1.4.6.1 D slide valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68.1.4.6.2 Piston valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68.1.4.7a Inside-fixed lost-motion valve gear . . . . . . . . . .
33、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78.1.4.7b Inside-adjustable lost-motion valve gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78.1.4.7c Outside-adjustable lost-motion valve. . . . . . . . . . . . .
34、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78.4.9.9 Piston packing joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218.4.9.12 Hydraulic packing . . . . . . . . . . . . . . . . . . . . .
35、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218.4.9.15.1 Metallic liquid piston ring pack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228.4.10.2 Cup-type packing . . . . . . . . . . . . . . . . . . .
36、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258.4.10.2.1a Assembling cup piston . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258.4.10.2.1b Correct and incorrect piston rod nut tightening
37、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Tables8.2a Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88.2b Subscripts . . . . . . . . . . . . . . . . . . .
38、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98.2.2.9 Barometric pressure versus elevation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128.4.9.15.2 Maximum temperature for ring mater
39、ials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238.4.9.16 Maximum concentration of chemicals for phenolic type rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238.4.15 Malfunctions cause and remedy . . . . . . . . . . . . . . . . . . .
40、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Hydraulic Institute Standards, Copyright 1997-2015, All Rights ReservedvForeword (Not part of Standard)Purpose and aims of the Hydraulic InstituteThe purpose and aims of the Institute are to promote the continued growth and well-bei
41、ng of pump manufacturersand further the interests of the public in such matters as are involved in manufacturing, engineering, distribution,safety, transportation and other problems of the industry, and to this end, among other things:a) To develop and publish standards for pumps;b) To collect and d
42、isseminate information of value to its members and to the public;c) To appear for its members before governmental departments and agencies and other bodies in regard to mat-ters affecting the industry;d) To increase the amount and to improve the quality of pump service to the public;e) To support ed
43、ucational and research activities;f) To promote the business interests of its members but not to engage in business of the kind ordinarily carried onfor profit or to perform particular services for its members or individual persons as distinguished from activitiesto improve the business conditions a
44、nd lawful interests of all of its members.Purpose of Standards1) Hydraulic Institute Standards are adopted in the public interest and are designed to help eliminate misun-derstandings between the manufacturer, the purchaser, and/or the user and to assist the purchaser inselecting and obtaining the p
45、roper product for a particular need.2) Use of Hydraulic Institute Standards is completely voluntary. Existence of Hydraulic Institute Standardsdoes not in any respect preclude a member from manufacturing or selling products not conforming to theStandards.Definition of a Standard of the Hydraulic Ins
46、tituteQuoting from Article XV, Standards, of the By-Laws of the Institute, Section B:“An Institute Standard defines the product, material, process or procedure with reference to one or more of the fol-lowing: nomenclature, composition, construction, dimensions, tolerances, safety, operating characte
47、ristics, perfor-mance, quality, rating, testing and service for which designed.”Comments from usersComments from users of this standard will be appreciated to help the Hydraulic Institute prepare even more usefulfuture editions. Questions arising from the content of this standard may be sent to the
48、Technical Director of theHydraulic Institute. The inquiry will then be directed to the appropriate technical committee for provision of a suit-able answer.If a dispute arises regarding the content of an Institute Standard or an answer provided by the Institute to a ques-tion such as indicated above,
49、 the point in question shall be sent in writing to the Technical Director of the HydraulicInstitute, who shall initiate the appeals process.RevisionsThe Standards of the Hydraulic Institute are subject to constant review, and revisions are undertaken whenever it isfound necessary because of new developments and progress in the art. If no revisions are made for five years, thestandards are reaffirmed using the ANSI canvass procedure.Hydraulic Institute Standards, Copyright 1997-2015, All Rights ReservedviUnits of measurement
