1、Reference numberISO 5596:1999(E)ISO 1999INTERNATIONALSTANDARDISO5596Second edition1999-12-01Hydraulic fluid power Gas-loadedaccumulators with separator Ranges ofpressures and volumes and characteristicquantitiesTransmissions hydrauliques Accumulateurs hydropneumatiques avecsparateur Gammes de pressi
2、ons et de volumes et grandeurscaractristiquesCopyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 5596:1999(E)PDF disclaimerThis PDF file may contain embedded typefaces. I
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8、nse from IHS-,-,-ISO 5596:1999(E) ISO 1999 All rights reserved iiiForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISOmember bodies). The work of preparing International Standards is normally carried out through ISO technicalcom
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11、ies for voting.Publication as an International 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 International Standard may be the subject ofpatent rights. ISO shall not be held responsible for iden
12、tifying any or all such patent rights.International Standard ISO 5596 was developed by Technical Committee ISO/TC 131, Fluid power systems.This second edition cancels and replaces the first edition (ISO 5596:1982), which has been technically revised.Copyright International Organization for Standardi
13、zation Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 5596:1999(E)iv ISO 1999 All rights reservedIntroductionIn hydraulic fluid power systems, power is transmitted and controlled through a liquid under pressure within anen
14、closed circuit.Gas-loaded accumulators are components that are able to store and return energy in accordance with the principleof compressibility of gases.Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permit
15、ted without license from IHS-,-,-INTERNATIONAL STANDARD ISO 5596:1999(E) ISO 1999 All rights reserved 1Hydraulic fluid power Gas-loaded accumulators withseparator Ranges of pressures and volumes and characteristicquantities1 ScopeThis International Standard specifies the characteristic performance q
16、uantities required for defining, designing, andtesting gas-loaded accumulators with separator, which are used in hydraulic fluid power systems.It also defines ranges of pressures and volumes for these accumulators.2 Normative referencesThe following normative documents contain provisions which, thro
17、ugh reference in this text, constitute provisions ofthis International Standard. For dated references, subsequent amendments to, or revisions of, any of thesepublications do not apply. However, parties to agreements based on this International Standard are encouraged toinvestigate the possibility of
18、 applying the most recent editions of the normative documents indicated below. Forundated references, the latest edition of the normative document referred to applies. Members of ISO and IECmaintain registers of currently valid International Standards.ISO 3, Preferred numbers Series of preferred num
19、bers.ISO 5598, Fluid power systems and components Vocabulary.3 Terms and definitionsFor the purposes of this International Standard, the terms and definitions given in ISO 5598 and the following apply.3.1gas-loaded accumulatoraccumulator with separation in which the liquid is pressurized using the c
20、ompressibility of an inert gas (nitrogen, forexample).NOTE The separation is achieved by means of a bladder, diaphragm, piston, etc.3.2gas-loaded accumulator, transfer typegas-loaded accumulator with a port for additional gas capacity from one or more gas bottle(s)3.3compatible fluidfluid that has n
21、o significant effect on the nature or life of the parts of the accumulator, especially those made ofelastomeric materialsCopyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I
22、SO 5596:1999(E)2 ISO 1999 All rights reserved4 Applications4.1 Energy storageThe gas-loaded accumulator stores hydraulic fluid under pressure during a period of low energy demand from thecircuit in which it is mounted. The stored hydraulic fluid is then returned to the circuit to supplement or repla
23、ce thepump discharge temporarily or to ensure emergency operation.4.2 Pulse or surge dampingThe gas-loaded accumulator absorbs hydraulic fluid to reduce pressure peaks and returns hydraulic fluid tocompensate for pressure drops. The accumulator thus reduces the amplitude of pressure oscillations in
24、the circuitin which it is mounted.4.3 Thermal compensationThe gas-loaded accumulator absorbs volume changes resulting from changes in the temperature of the hydraulicfluid contained in an isolated part of the circuit.5 Characteristic quantitiesThe following quantities shall be used to define and des
25、ign a gas-loaded accumulator.5.1 Pressuresp0= pre-charging pressure, i.e., the gas pressure in the accumulator when the hydraulic circuit is not underpressure (initial state) at a temperature of 20 C Gb1 5C.p1= minimum working pressure of the hydraulic circuit.p2= maximum working pressure of the hyd
26、raulic circuit.p3= set pressure of the pressure relief valve for the accumulator, if one is fitted.p4= allowable pressure, i.e., the maximum permissible pressure for which the accumulator has beendesigned and/or qualified by test.p5or pt= hydraulic test pressure; the ratio between p5and p4is defined
27、 by relevant national regulations ordesign codes.02pp=allowable pressure ratio below which the accumulator type can be used.Pressures shall be expressed in megapascals, with the equivalent value in bars in parentheses.5.2 VolumesV = internal volume of the gas chamber.V0= gas volume at pressure p0.V1
28、, V2= volumes occupied by the gas contained in the accumulator and any additional gas bottles at pressuresp1and p2, respectively (as defined in 5.1).VS= swept volume of piston-type accumulator.G44V= volume that can be stored or discharged between the two pressures p1and p2.Volumes shall be expressed
29、 in litres.Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 5596:1999(E) ISO 1999 All rights reserved 35.3 Flow ratesqin= maximum volumetric flow rate into the accumul
30、ator.qout= maximum volumetric flow rate out of the accumulator.Flow rates shall be expressed in litres per minute.5.4 Temperaturest1= minimum operating temperature of the hydraulic fluid or of the environment, whichever is lower.t2= maximum operating temperature of the hydraulic fluid or of the envi
31、ronment, whichever is higher.tc,min= minimum design temperature; tc,minshall be lower than or equal to t1.tc,max= maximum design temperature; tc,maxshall be higher than or equal to t2Temperatures shall be expressed in degrees Celsius.6 Ranges of pressures and volumes6.1 Nominal pressure range, p46,3
32、 (63) 10 (100) 16 (160) 20 (200) 25 (250) 31,5 (315) 40 (400) 50 (500) 63 (630)Pressures are expressed in megapascals, with the equivalent value in bars in parentheses.For special applications that require lower or higher pressures, use pressures corresponding to the R 10 series ofpreferred numbers
33、(see ISO 3).6.2 Nominal volume range, V0,250,40,50,631,01,62,54,06,31016202532405063100160200Volumes are expressed in litres.For special applications that require smaller or larger volumes, use volumes corresponding to the R 10 series ofpreferred numbers (see ISO 3).7 Identification statement (refer
34、ence to this International Standard)Use the following statement in test reports, catalogues, and sales literature when electing to comply with thisInternational Standard:“Ranges of pressures and volumes, and characteristic quantities for gas-loaded accumulators with separatorselected in accordance w
35、ith ISO 5596:1999, Hydraulic fluid power Gas-loaded accumulators with separator Ranges of pressures and volumes and characteristic quantities.”Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without
36、license from IHS-,-,-ISO 5596:1999(E)4 ISO 1999 All rights reservedBibliography1 ISO 2944:1), Fluid power systems and components Nominal pressures.2 ISO 10945:1994, Hydraulic fluid power Gas-loaded accumulators Dimensions of gas ports.3 ISO 10946:1999, Hydraulic fluid power Gas-loaded accumulators w
37、ith separator Selection of preferredhydraulic ports.1) To be published. (Revision of ISO 2944:1974)Copyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright International
38、 Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ISO 5596:1999(E)ICS 23.100.99Price based on 4 pages ISO 1999 All rights reservedCopyright International Organization for Standardization Provided by IHS under license with ISONot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
