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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS ISO 6953-2:2000 ICS 23
2、.100.50 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Pneumatic fluid power Compressed air pressure regulators and filter-regulators Part 2: Test methods to determine the main characteristics to be included in literature from suppliers Licensed Copy: sheffieldun sheffieldun,
3、 na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 February 2001 BSI 02-2001 ISBN 0 580 36626
4、 X BS ISO 6953-2:2000 Amendments issued since publication Amd. No.DateComments National foreword This British Standard reproduces verbatim ISO 6953-2:2000 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee MCE/18, Fluid power s
5、ystems and components, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European devel
6、opments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Standards Catalogue under t
7、he section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct applicati
8、on. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 8, an inside back cover and a back cover. The BSI copyright notice displayed
9、 in this document indicates when the document was last issued. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 6953-2:2000(E) INTERNATIONAL STANDARD ISO 6953-2 First edition 2000-09-01 Pneumatic fluid power Compressed ai
10、r pressure regulators and filter-regulators Part 2: Test methods to determine the main characteristics to be included in literature from suppliers Transmissions pneumatiques Rgulateurs de pression et filtre-rgulateurs pour air comprim Partie 2: Mthodes dessai pour dterminer les principales caractris
11、tiques inclure dans la documentation des fournisseurs Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 6953-2:2000(E) ii Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 6953-2
12、:2000(E) iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject
13、for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) o
14、n all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Internation
15、al Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this part of ISO 6953 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Internati
16、onal Standard ISO 6953-2 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 5, Control products and components. ISO 6953 consists of the following parts, under the general title Pneumatic fluid power Compressed air pressure regulators and filter-regulators: Part 1:
17、Main characteristics to be included in literature from suppliers and product-marking requirements Part 2: Test methods to determine the main characteristics to be included in literature from suppliers Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy,
18、(c) BSI ISO 6953-2:2000(E) iv Introduction In pneumatic fluid power systems, power is transmitted and controlled through air under pressure circulating within a circuit. Where reduction and regulation of the pressure is desired, the regulators and filter-regulators are components designed to maintai
19、n the compressed air pressure approximately constant. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARDISO 6953-2:2000(E) 1 Pneumatic fluid power Compressed air pressure regulators and filter-regulators Part 2: Test meth
20、ods to determine the main characteristics to be included in literature from suppliers 1Scope This part of ISO 6953 specifies tests, test procedures and a method of presenting the results concerning the parameters which define the main characteristics to be included in literature from suppliers of re
21、gulators and filter- regulators conforming to ISO 6953-1. The aim of this part of ISO 6953 is ?to facilitate the comparison of pressure regulators and filter-regulators by standardizing test methods and presentation of test data; ?to assist in the proper application of pressure regulators and filter
22、-regulators in compressed air systems. The tests specified are intended to allow comparison between the different type of regulators and filter-regulators; they are not production tests to be carried out on each pressure regulator or filter-regulator manufactured. 2Normative references The following
23、 normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 6953. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 6953 are en
24、couraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO
25、 3:1973, Preferred numbers Series of preferred numbers. ISO 65:1981, Carbon steel tubes suitable for screwing in accordance with ISO 7-1. ISO 2944:2000, Fluid power systems and components Nominal pressures. ISO 3448:1992, Industrial liquid lubricants ISO viscosity classification. ISO 5598:1985, Flui
26、d power systems and components Vocabulary. ISO 6358:1989, Pneumatic fluid power Components using compressible fluids Determination of flow-rate characteristics. ISO 6953-1:2000, Pneumatic fluid power Compressed air pressure regulators and filter-regulators Part 1: Main characteristics to be included
27、 in literature from suppliers and product-marking requirements. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 6953-2:2000(E) 2 3Terms and definitions For the purposes of this part of ISO 6953, the terms and definitions given in ISO 559
28、8 and ISO 6953-1 apply. 4Units Units from ISO 1000 are generally used in pneumatic fluid power systems, in particular: ?gauge pressure, expressed in kilopascals (in bars, between parentheses) kPa (bar); ?temperature, expressed in degrees Celsius (C); ?flow rate, expressed in cubic decimetres per sec
29、ond dm3/s (ANR). 5Test conditions 5.1Temperature For all tests, maintain the temperature of the process air, the equipment and the ambient air temperature at 25 C?10 C. 5.2Pressures The specified pressures shall be held to within?2 %. The preferred test pressures are those given in clause 4.3.2 of I
30、SO 6953-1:2000, from Table 1 below, or from ISO 2944. Where other test pressures are required, the values shall be chosen from series R5 of preferred numbers, according to ISO 3. 6Test procedure to verify rated pressure 6.1Perform this test on three random samples if a single rated pressure is propo
31、sed for the entire product, or on six random samples if separate ratings are proposed for the inlet and outlet sections. If the product uses a diaphragm, modify or replace it to withstand the pressure applied (diaphragms are excluded from the test criteria, but not the diaphragm support plates or an
32、y pistons). Other product sealing means may be modified to prevent leakage and allow structural failure to occur during the test, but modifications may not increase the structural strength of the pressure-containing envelope. 6.2Prepare the test samples as follows: 6.2.1If a single pressure rating i
33、s proposed for the entire product, remove the control spring and replace it with a solid spacer whose length will maintain the poppet in its half-open position. Close the gauge ports and the inlet port with plugs, and perform all testing by applying pressure to the outlet port. 6.2.2If a separate pr
34、essure rating is proposed for the inlet and outlet sections of the regulator, relieve the control spring force on three of the samples. Using a proposed pressure rating for the inlet, perform testing on the inlet port, allowing the poppet to be closed and keeping the outlet port open. Prepare the ot
35、her three samples as described in 6.2.1 and test them using a proposed pressure rating for the outlet port. 6.3Fill samples with a liquid that does not exceed ISO VG 32, according to ISO 3448, and maintain the temperatures given in 5.1. 6.4After stabilization of the temperature, pressurize slowly to
36、 a level of 1,5 times the proposed rated pressure. Hold at this level for 2 min and observe for leakage or failure, as defined in 6.6. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 6953-2:2000(E) 3 Table 1 Chart for outlet pressure set
37、 points Values in kilopascals (bars) Inlet test pressure levels Maximum of the adjustable pressure range 250 (2,5) 630 (6,3) 1 000 (10) 1 600 (16) 2 500 (25) less than 100 (less than 1) Values of approximately 25 %, 40 %, 63 % and 80 % of the maximal adjustable pressure range. 100 to 125 (1 to 1,25)
38、 25 - 40 - 63 - 80 _ (0,25 - 0,4 - 0,63 - 0,8) 125 to 160 (1,25 to 1,6) 40 - 63 - 80 - 100 _ (0,4 - 0,63 - 0,8 - 1) 160 to 200 (1,6 to 2) 40 - 63 - 100 - 125 _ (0,4 - 0,63 - 1 - 1,25) 200 to 250 (2 to 2,5) 63 - 100 - 125 - 160 _ (0,63 - 1 - 1,25 - 1,6) 250 to 315 (2,5 to 3,15) 63 - 100 - 160 - 200 (
39、0,63 - 1 - 1,6 - 2) _ 315 to 400 (3,15 to 4) 100 - 160 - 200 - 250 (1 - 1,6 - 2 - 2,5) _ 400 to 500 (4 to 5) 100 - 160 - 250 - 315 (1 - 1,6 - 2,5 - 3,15) _ 500 to 630 (5 to 6,3) 125 - 200 - 315 - 400 (1,25 - 2 - 3,15 - 4) _ 630 to 800 (6,3 to 8) 160 - 250 - 400 - 500 (1,6 - 2,5 - 4 - 5) _ 800 to 1 0
40、00 (8 to 10) 200 - 315 - 500 - 630 (2,5 - 3,15 - 5 - 6,3) _ 1 000 to 1 250 (10 to 12,5) 250 - 400 - 630 - 800 (2,5 - 4 - 6,3 - 8) _ 1 250 to 1 600 (12,5 to 16) 315 - 500 - 800 - 1 000 (3,15 - 5 - 8 - 10) _ 1 600 (16) 400 - 630 - 1 000 - 1 250 (4 - 6,3 - 10 - 12,5) _ NOTEWherever the pressure rating
41、allows, an inlet test pressure of 630 kPa (6,3 bar) should be used for adjustable pressure ranges of up to 800 kPa (8 bar). For adjustable pressure ranges greater than 800 kPa (8 bar), and up to 1 250 kPa (12,5 bar), an inlet test pressure of 1 000 kPa (10 bar) should be used. Licensed Copy: sheffie
42、ldun sheffieldun, na, Sun Nov 26 06:53:26 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 6953-2:2000(E) 4 6.5If there is no leakage or failure, increase the pressure by approximately half its proposed rating. Hold at this pressure for 2 min and observe for leakage or failure, as defined in 6.6. 6.5.
43、1Products constructed of light alloys, brass and steel Continue raising the pressure as above until a level of four times the proposed rated pressure has been reached. 6.5.2Products constructed of zinc diecast alloys or plastics 6.5.2.1Design operating temperatures of up to 50 C Continue raising the
44、 pressure as above until a level of four times the proposed rated pressure has been reached. 6.5.2.2Design operating temperature of between 50 C to 80 C Continue raising the pressure as above until a level of five times the proposed rated pressure has been reached. 6.6The criterion for a failure is
45、a fracture, separation of parts, or a crack, or that which can allow enough liquid to pass across the pressure-containing envelope to wet the outer surface. Leakage across the port threads shall not constitute a failure, unless caused by a fracture or a crack. 6.7The proposed rated pressure will be
46、verified if all three samples pass their respective tests. 6.8Where a unit or sub-assembly in the unit (for example, reservoir/sight glass) is constructed of different materials, the higher appropriate factor should be used. The applied pressure may be restricted to the area of the interface between
47、 the different materials. 6.9Where the pressure-containing envelope design is covered by a pressure vessel code in the market of sale, the requirements of that code take precedence over the requirements stated in this part of ISO 6953. 7Performance tests 7.1Test installation 7.1.1Test circuit The te
48、st circuit shall comply fully with the one described in Figure 1. Only one flow-meter location is required per test. The following locations are optional: ?F1, F3 or F4 for forward-flow characteristics test and for pressure-regulation characteristics test; ?F1 or F2 for relief-flow characteristics test. 7.1.2Pressure-measuring tube The pressure-measuring tubes shall comply fully with those described in ISO 6358:1989, Figure 3, Table