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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1762:1998 The Europ
2、ean Standard EN 1762:1997 has the status of a British Standard ICS 75.200; 83.140.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Rubber hoses and hose assemblies for liquefied petroleum gas, LPG (liquid or gaseous phase), and natural gas up to 25 bar (2,5 MPa) Specificatio
3、n Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:46:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared under the direction of the Sector Board for Materials and Chemicals, was published under the authority of the Standards Board and comes into effect
4、 on 15 July 1998 BSI 1998 ISBN 0 580 29331 9 BS EN 1762:1998 Amendments issued since publication Amd. No.DateText affected National foreword This British Standard is the English language version of EN 1762:1997. It supersedes section 2 of BS 4089:1989. The UK participation in its preparation was ent
5、rusted by Technical Committee PRI/66, Rubber and plastics tubing, hoses and hose assemblies, to Subcommittee PRI/66/1, Industrial, chemical and petrochemical applications, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiri
6、es on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Hoses and hose assemblies designated as types 1, 2, 3, 4, 5 and 6 in section 2 of BS 4089:1989 are replaced by types D, D-LT,
7、SD and SD-LT in this standard. The requirements for composite hose assemblies in section 3 of BS 4089:1989 are expected to be the scope of a new publication in CEN. Attention is drawn to Figure A.1, in which dimensions are expressed in millimetres. A list of organizations represented on this subcomm
8、ittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by usi
9、ng 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 application. Compliance with a British Standard does not of itself confer immunity f
10、rom legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:46:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN European Commit
11、tee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1762:1997 E EUROPEAN STANDAR
12、DEN 1762 NORME EUROPE ENNE EUROPA ISCHE NORM October 1997 ICS 23.040.70 Descriptors: Rubber hoses, hoses, liquefied petroleum gases, natural gas, petroleum products, transport, specifications, materials, electrical resistance, dimensions, physical properties, tests, flammability tests, marking Engli
13、sh version Rubber hoses and hose assemblies for liquefied petroleum gas, LPG (liquid or gaseous phase), and natural gas up to25bar (2,5MPa) Specification Tuyaux et flexibles en caoutchouc pour le gaz de pe trole lique fie GPL (en phase liquide ou gazeuse) et le gaz naturel jusqua 25 bar (2,5 MPa) Sp
14、e cification Gummischla uche und -schlauchleitungen fu r Flu ssiggas LPG (flu ssig oder gasfo rmig) und Erdgas bis 25 bar (2,5 MPa) Spezifikation This European Standard was approved by CEN on 18 September 1997. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate
15、 the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists
16、 in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodie
17、s of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:46:11 GMT+00:00 2006, Uncontrolled Copy, (c)
18、BSI Page 2 EN 1762:1997 BSI 1998 Foreword This European Standard has been prepared by Technical Committee CEN/TC 218, Rubber and plastics hoses and hose assemblies, the Secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication
19、 of an identical text or by endorsement, at the latest by April 1998, and conflicting national standards shall be withdrawn at the latest by April 1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Euro
20、pean Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 1Scope3 2Normative references3 3Definitions3 4Types of hoses3 5Ma
21、terials and construction3 6Dimensions3 7Physical properties5 8Electrical resistance5 9Application of tests6 10Marking7 Annex A (normative) Flammability test8 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:46:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 1762:1997 BSI 1998 1 Scop
22、e This European Standard specifies the requirements for rubber hoses and rubber hose assemblies used for the transfer of liquefied petroleum gas (LPG) in liquid or gaseous phase and natural gas with a maximum working pressure of 25 bar (2,5 MPa) and vacuum within the temperature range of 230 8C to +
23、70 8C and, when designated -LT, 250 8C to +70 8C. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For da
24、ted references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 21746, Rubber or plastics hoses and tubing Bending
25、tests. (ISO 1746:1983) EN 24671, Rubber and plastics hoses and hose assemblies Methods of measurement of dimensions. (ISO 4671:1984) EN 24672, Rubber and plastics hoses Sub-ambient temperature flexibility tests. (ISO 4672:1988) EN 27326, Rubber and plastics hoses Assessment of ozone resistance under
26、 static conditions. (ISO 7326:1991) EN 28031, Rubber and plastics hoses and hose assemblies Determination of electrical resistance. (ISO 8031:1987) EN 28033, Rubber and plastics hoses Determination of adhesion between components. (ISO 8033:1991) EN ISO 1402, Rubber and plastics hoses and hose assemb
27、lies Hydrostatic testing. (ISO 1402:1994) EN ISO 7233, Rubber and plastics hoses and hose assemblies Determination of suction resistance. (ISO 7233:1991) ISO 37, Rubber, vulcanized or thermoplastic Determination of tensile stress-strain properties. ISO 188, Rubber, vulcanized Accelerated ageing or h
28、eat-resistance tests. ISO 1817, Rubber, vulcanized Determination of the effect of liquids. ISO 4649, Rubber Determination of abrasion resistance using a rotating cylindrical drum device. ISO/TR 8330, Rubber and plastics Glossary of terms used by the hose industry. 3 Definitions For the purposes of t
29、his standard, the definitions given in ISO/TR 8330 apply. 4 Types of hoses Hoses shall be one of the following types: type D: delivery hose; type D-LT: delivery hose, low temperature; type SD: suction and delivery hose, helix reinforced; type SD-LT: suction and delivery hose, helix reinforced, low t
30、emperature. All these types can be either: a) electrically bonded, designated and marked M type; or b) electrically conductive, using a conductive rubber layer, designated and marked V type. 5 Materials and construction The hose shall consist of the following: a lining of synthetic rubber resistant
31、to n-pentane; a reinforcement of layers of woven, braided or spirally wound textile material or braided or spirally wound wire; an embedded helix reinforcement (type SD and type SD-LT only); two or more low resistance electrical bonding wires (type M only); an outer cover of synthetic rubber, resist
32、ant to abrasion and outdoor exposure. The cover shall be pricked to allow gas permeation. Assemblies shall incorporate metallic fittings attached to the hose by the assembler. NOTEAll materials used in the construction should be free from defects and suitable for the temperature range specified. 6 D
33、imensions 6.1 Nominal bore, internal diameters, outside diameters, minimum bend radius When measured in accordance with method A of EN 24671, the internal diameter and outside diameter and their tolerances shall comply with Table 1 or Table 2, depending on the type. When tested by the method describ
34、ed in EN 21746, the value of the minimum bend radius shall be as given in Table 1 or Table 2, depending on the type. 6.2 Minimum thickness of lining and cover The minimum thickness of both the lining and cover of all hoses shall be 1,6 mm. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:46
35、:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 4 EN 1762:1997 BSI 1998 Table 1 Dimensions of hoses of types D and D-LT Nominal boreInternal diameterToleranceOutside diameterToleranceDesign minimum bend radius1) mmmmmmmmmm 1212,7 0,5 22,7 1,0 100 1515 0,5 251,0120 1615,9 0,5 25,9 1,0 125 1919 0,
36、5 31 1,0 160 2525 0,5 38 1,0 200 3232 0,5 45 1,0 250 3838 0,5 52 1,0 320 5050 0,6 66 1,2 400 5151 0,6 67 1,2 400 6363 0,6 81 1,2 550 7575 0,6 93 1,2 650 7676 0,6 94 1,2 650 8080 0,6 98 1,2 725 100100 1,6 120 1,6 800 150150 2,0 174 2,0 1200 200200 2,0 224 2,0 1600 1) The design minimum bend radius is
37、 measured to the surface of the hose on the inside of the bend. NOTEOther diameters than those listed in this table can be agreed with the manufacturer. Table 2 Dimensions of hoses of types SD and SD-LT Nominal boreInternal diameterToleranceOutside diameterToleranceDesign minimum bend radius1) mmmmm
38、mmmmm 1212,7 0,5 22,7 1,0 90 1515 0,5 25 1,0 95 1615,9 0,5 25,9 1,0 95 1919 0,5 31 1,0 100 2525 0,5 38 1,0 150 3232 0,5 45 1,0 200 3838 0,5 52 1,0 280 5050 0,6 66 1,2 350 5151 0,6 67 1,2 350 6363 0,6 81 1,2 480 7575 0,6 93 1,2 550 7676 0,6 94 1,2 550 8080 0,6 98 1,2 680 100100 1,6 120 1,6 720 150150
39、 2,0 174 2,0 1000 200200 2,0 224 2,0 1400 1) The design minimum bend radius is measured to the surface of the hose on the inside of the bend. NOTE Other diameters than those listed in this table can be agreed with the manufacturer. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 17 08:46:11 GMT+
40、00:00 2006, Uncontrolled Copy, (c) BSI Page 5 EN 1762:1997 BSI 1998 Table 3 Physical properties of compounds PropertyUnitRequirementsMethod of test LiningCover 1. Tensile strengthmin.MPa1010ISO 37 (dumb-bell test piece) 2. Elongation at breakmin.%250250ISO 37 (dumb-bell test piece) 3. Abrasion resis
41、tancemax.mm3170ISO 4649, Method A 4. Ageing Hardness, change from original value IRHD+10+10 Tensile strength, change from the original value max.% 3030 ISO 188 (14 days at +70 8C, air-oven method) Elongation at break, change from the original value max.%235235 5. Mass increasemax.%+10ISO 1817 after
42、7 days storing in n-pentane at +23 8C Variation of hardnessIRHD+10/23ISO 1817 (see above) after additional drying for 70 h at +40 8C Mass reductionmax.%25 210 (LT-types) 7 Physical properties 7.1 Compounds The physical properties of the compounds used for the lining and cover shall comply with the v
43、alues given in Table 3, when tested by the methods listed in Table 3. Tests shall be carried out either on samples taken from the hose or from separately vulcanized sheets. 7.2 Finished hose When tested by the methods listed in Table 4, the physical properties of the finished hose shall comply with
44、the values given in Table 4. 8 Electrical resistance Electrical resistance of hose and hose assemblies can be obtained by three methods: 1) Textile reinforced hoses with bonding wires Incorporating two low resistance bonding wires into the hose construction. These shall be spirally applied and shall
45、 be positioned in such a way as to cross uniformly. When attaching fittings to this hose, the bonding wires shall be folded into the hose bore, positioned between the lining and the fitting tail and extended approximately 1/3 the length of the fitting tail into the bore. When tested in accordance wi
46、th EN 28031, the resistance along the bonding wires, in the case of hose, or the resistance between fittings, in the case of hose assemblies, shall not exceed 1 3 102V per length. When obtaining electrical continuity by this method the hose shall be marked with the symbol M. 2) Textile reinforced ho
47、ses with conducting materials Incorporating electrically conducting materials in the hose construction. When attaching fittings to this hose, an adequate connection between the end-fittings and the conductive layer shall be obtained. When tested in accordance with EN 28031, the resistance along the
48、conductive layer, in the case of hose, or the resistance between the fittings, in the case of hose assemblies, shall not exceed 1 3 106V per length. When obtaining electrical resistance by this method the hose shall be marked with the symbol V. 3) Wire reinforced hoses Incorporating braided or spira
49、lly wound wire which shall be in direct contact with the fitting. When tested in accordance with EN 28031, the resistance between fittings, in the case of hose assemblies, shall not exceed 1 3 102V per length. When obtaining electrical continuity by this method the hose shall be marked with the symbol M. During and after subjection to the hydrostatic tests as described in EN ISO 1402, the electrical continuity of each hose