API STD 526-2009 Flanged Steel Pressure-relief Valves (Sixth Edition Incorporates Errata May 2009 Errata 2 October 2012)《法兰钢泄压阀第6版》.pdf

1、Flanged Steel Pressure-relief ValvesAPI STANDARD 526SIXTH EDITION, APRIL 2009ERRATA, MAY 2009ERRATA 2, OCTOBER 2012Flanged Steel Pressure-relief ValvesDownstream SegmentAPI STANDARD 526SIXTH EDITION, APRIL 2009ERRATA, MAY 2009ERRATA 2, OCTOBER 2012Special NotesAPI publications necessarily address pr

2、oblems of a general nature. With respect to particular circumstances, local,state, and federal laws and regulations should be reviewed.Neither API nor any of APIs employees, subcontractors, consultants, committees, or other assignees make anywarranty or representation, either express or implied, wit

3、h respect to the accuracy, completeness, or usefulness ofthe information contained herein, or assume any liability or responsibility for any use, or the results of such use, of anyinformation or process disclosed in this publication. Neither API nor any of APIs employees, subcontractors,consultants,

4、 or other assignees represent that use of this publication would not infringe upon privately owned rights.API publications may be used by anyone desiring to do so. Every effort has been made by the Institute to assure theaccuracy and reliability of the data contained in them; however, the Institute

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6、ons are published to facilitate the broad availability of proven, sound engineering and operatingpractices. These publications are not intended to obviate the need for applying sound engineering judgmentregarding when and where these publications should be utilized. The formulation and publication o

7、f API publicationsis not intended in any way to inhibit anyone from using any other practices.Any manufacturer marking equipment or materials in conformance with the marking requirements of an API standardis solely responsible for complying with all the applicable requirements of that standard. API

8、does not represent,warrant, or guarantee that such products do in fact conform to the applicable API standard.All rights reserved. No part of this work may be reproduced, translated, stored in a retrieval system, or transmitted by any means, electronic, mechanical, photocopying, recording, or otherw

9、ise, without prior written permission from the publisher. Contact the Publisher, API Publishing Services, 1220 L Street, N.W., Washington, D.C. 20005.Copyright 2009 American Petroleum InstituteForewordThis standard is a purchase specification for flanged steel pressure-relief valves including direct

10、 spring-loadedpressure-relief valves and pilot-operated pressure-relief valves.Nothing contained in any API publication is to be construed as granting any right, by implication or otherwise, for themanufacture, sale, or use of any method, apparatus, or product covered by letters patent. Neither shou

11、ld anythingcontained in the publication be construed as insuring anyone against liability for infringement of letters patent.This document was produced under API standardization procedures that ensure appropriate notification andparticipation in the developmental process and is designated as an API

12、standard. Questions concerning theinterpretation of the content of this publication or comments and questions concerning the procedures under whichthis publication was developed should be directed in writing to the Director of Standards, American PetroleumInstitute, 1220 L Street, N.W., Washington,

13、D.C. 20005. Requests for permission to reproduce or translate all or anypart of the material published herein should also be addressed to the director.Generally, API standards are reviewed and revised, reaffirmed, or withdrawn at least every five years. A one-timeextension of up to two years may be

14、added to this review cycle. Status of the publication can be ascertained from theAPI Standards Department, telephone (202) 682-8000. A catalog of API publications and materials is publishedannually and updated quarterly by API, 1220 L Street, N.W., Washington, D.C. 20005.Suggested revisions are invi

15、ted and should be submitted to the Standards Department, API, 1220 L Street, NW,Washington, D.C. 20005, standardsapi.org.iiiContentsPage1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

16、. . . . 12 Normative References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Terms and Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

17、 . . . . . . . . . . . . . . . 14 Responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Conflicting Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Orifice Areas and Designations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37.2 Determination of Orifice Area . .

20、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37.3 Valve Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37.4 Dimen

21、sions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37.5 Lifting Levers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22、. . . . . . . . . . . . . . . . 37.6 Special Construction Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38.2 Spring-loaded Pressure-relief Valves . . . . . . . . . .

24、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48.3 Pilot-operated Pressure-relief Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Inspection and Shop Tests. . . . . . . . . . . . .

25、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49.1 Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49.2 Set Pressure Test

26、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59.3 Seat Leakage Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27、 . . . . . . 510 Identification and Preparation for Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 510.1 Identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

28、 . . . . . . . . . . . . . . . . 510.2 Preparation for Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 511 Pressure-temperature Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

29、 . . . . . . . . . . . . . . . . . . . . . . . . . 511.1 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 511.2 Temperature Ranges . . . . . . . . . . . . . . . . . . . . . . . . .

30、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 511.3 Maximum Inlet Flange Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 611.4 Outlet Pressure Limit. . . . . . . . . . . . . . .

31、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Annex A Pressure-relief Valve Nameplate Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Annex B Pressure-temperature Rating Charts . . . . .

32、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Annex C Bellows Pressure-temperature Requested Rating Factors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Annex D Valve Selection Examples . . . . . . . . . . . . . . . . . . . . . .

33、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43Tables1 Standard Effective Orifice Areas and L

34、etter Designations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Spring Materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Spring-loaded Pressure-relief Valv

35、es “D” Orifice (Effective Orifice Area = 0.110 in.2) . . . . . . . . . . . . . . . . 74 Spring-loaded Pressure-relief Valves “E” Orifice (Effective Orifice Area = 0.196 in.2) . . . . . . . . . . . . . . . . 85 Spring-loaded Pressure-relief Valves “F” Orifice (Effective Orifice Area = 0.307 in.2) . .

36、 . . . . . . . . . . . . . . 96 Spring-loaded Pressure-relief Valves “G” Orifice (Effective Orifice Area = 0.503 in.2) . . . . . . . . . . . . . . . 10vPage7 Spring-loaded Pressure-relief Valves “H” Orifice (Effective Orifice Area = 0.785 in.2) . . . . . . . . . . . . . . . 118 Spring-loaded Pressur

37、e-relief Valves “J” Orifice (Effective Area = 1.287 in.2). . . . . . . . . . . . . . . . . . . . . . 129 Spring-loaded Pressure-relief Valves “K” Orifice (Effective Orifice Area = 1.838 in.2) . . . . . . . . . . . . . . . 1310 Spring-loaded Pressure-relief Valves “L” Orifice (Effective Area = 2.853

38、in.2). . . . . . . . . . . . . . . . . . . . . . 1411 Spring-loaded Pressure-relief Valves “M” Orifice (Effective Orifice Area = 3.60 in.2) . . . . . . . . . . . . . . . . 1512 Spring-loaded Pressure-relief Valves “N” Orifice (Effective Orifice Area = 4.34 in.2) . . . . . . . . . . . . . . . . 1613

39、Spring-loaded Pressure-relief Valves “P” Orifice (Effective Orifice Area = 6.38 in.2) . . . . . . . . . . . . . . . . 1714 Spring-loaded Pressure-relief Valves “Q” Orifice (Effective Orifice Area = 11.05 in.2) . . . . . . . . . . . . . . . 1815 Spring-loaded Pressure-relief Valves “R” Orifice (Effec

40、tive Orifice Area = 16.00 in.2) . . . . . . . . . . . . . . . 1916 Spring-loaded Pressure-relief Valves “T” Orifice (Effective Orifice Area = 26.00 in.2) . . . . . . . . . . . . . . . 2017 Pilot-operated Pressure-relief Valves “D” Orifice (Effective Orifice Area = 0.110 in.2) . . . . . . . . . . . .

41、 . . . 2118 Pilot-operated Pressure-relief Valves “E” Orifice (Effective Orifice Area = 0.196 in.2) . . . . . . . . . . . . . . . 2219 Pilot-operated Pressure-relief Valves “F” Orifice (Effective Orifice Area = 0.307 in.2) . . . . . . . . . . . . . . . 2320 Pilot-operated Pressure-relief Valves “G”

42、Orifice (Effective Orifice Area = 0.503 in.2) . . . . . . . . . . . . . . . 2421 Pilot-operated Pressure-relief Valves “H” Orifice (Effective Orifice Area = 0.785 in.2) . . . . . . . . . . . . . . . 2522 Pilot-operated Pressure-relief Valves “J” Orifice (Effective Orifice Area = 1.287 in.2) . . . .

43、. . . . . . . . . . . 2623 Pilot-operated Pressure-relief Valves “K” Orifice (Effective Orifice Area = 1.838 in.2) . . . . . . . . . . . . . . . 2724 Pilot-operated Pressure-relief Valves “L” Orifice (Effective Area = 2.853 in.2). . . . . . . . . . . . . . . . . . . . . . 2825 Pilot-operated Pressur

44、e-relief Valves “M” Orifice (Effective Orifice Area = 3.60 in.2) . . . . . . . . . . . . . . . . 2926 Pilot-operated Pressure-relief Valves “N” Orifice (Effective Orifice Area = 4.34 in.2) . . . . . . . . . . . . . . . . 3027 Pilot-operated Pressure-relief Valves “P” Orifice (Effective Orifice Area

45、= 6.38 in.2) . . . . . . . . . . . . . . . . 3128 Pilot-operated Pressure-relief Valves “Q” Orifice (Effective Orifice Area = 11.05 in.2) . . . . . . . . . . . . . . . 3229 Pilot-operated Pressure-relief Valves “R” Orifice (Effective Orifice Area = 16.00 in.2) . . . . . . . . . . . . . . . 3330 Pilo

46、t-operated Pressure-relief Valves “T” Orifice (Effective Orifice Area = 26.00 in.2) . . . . . . . . . . . . . . . 34A.1 PRV Nameplate Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35FiguresB.1 Pressure-temperatur

47、e Limits 1 to be Used with Table 3 to Table 30 of This Standard . . . . . . . . . . . . . . . 36B.2 Pressure-temperature Limits 1 to be Used with Table 3 to Table 30 of This Standard . . . . . . . . . . . . . . . 37B.3 Pressure-temperature Limits 1 to be Used with Table 3 to Table 30 of This Standar

48、d . . . . . . . . . . . . . . . 37B.4 Pressure-temperature Limits 1 to be Used with Table 3 to Table 30 of This Standard . . . . . . . . . . . . . . . 38B.5 Pressure-temperature Limits 1 to be Used with Table 3 to Table 30 of This Standard . . . . . . . . . . . . . . . 38C.1 Bellows Pressure-tempera

49、ture Rating Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39D.1 Bellows Pressure-temperature Rating Factor for Example 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41D.2 Pressure-temperature Limits 1 for Example 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 421Flanged Steel Pressure-relief Valves1ScopeThis standard is a purchase specification for flanged steel pressure-relief valves. Basic requirements are given fordirect spring-loaded pressure-relief va