BS ISO 17559-2004 Hydraulic fluid power - Electrically controlled hydraulic pumps - Test methods to determine performance characteristics《液压传动 电控液压泵 性能特征测定的试验方法》.pdf

1、BRITISH STANDARD BS ISO 17559:2003 Hydraulic fluid power Electrically controlled hydraulic pumps Test methods to determine performance characteristics ICS 23.100.10 BS ISO 17559:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 22 November

2、 2004 BSI 22 November 2004 ISBN 0 580 44822 3 National foreword This British Standard reproduces verbatim ISO 17559:2003 and implements it as the UK national standard. The UK participation in its preparation was entrusted by Technical Committee MCE/18, Fluid power systems, to Subcommittee MCE/18/-/8

3、, Product testing, which has the responsibility to: A list of organizations represented on this subcommittee 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 Catalogue u

4、nder the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct a

5、pplication. Compliance with a British Standard does not of itself confer immunity from legal obligations. 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

6、; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 20, an inside back cover and a back cover. The BSI copyright notice disp

7、layed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsINTERNATIONAL STANDARD ISO 17559 First edition 2003-11-15 Reference number ISO 17559:2003(E) OSI 2003 Hydraulic fluid power Electrically controlled hydraulic pumps Test metho

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13、5 -HCG 1121eneva 02 T.le 22 14 + 10 947 11 Fxa + 22 14 0 94774 9 Eam-il ocpyrithgios.ogr Web wwwi.soo.rg BSISO17559:2003ISO 55713002:9)E( ISO 3002 r llAithgs reservde iii Contents Page 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Symbols 2 5 Test installation General requirements .

14、 2 5.1 General . 2 5.2 General test apparatus . 4 6 General test conditions . 5 6.1 Test fluid . 5 6.2 Ambient conditions . 5 6.3 Steady-state conditions 5 7 Tests of steady-state performance characteristics 5 7.1 General . 5 7.2 Flow/pressure characteristics 5 7.3 Characteristic test on output pres

15、sure against input pressure command signal: test procedure and presentation of test results . 7 7.4 Characteristic test of output flow against input flow signal Test procedure and expression of test results 8 7.5 Repeatability test . 9 7.6 Test for change in characteristics against oil temperature .

16、 12 8 Tests of dynamic performance characteristics . 13 8.1 General . 13 8.2 Pressure compensator response and recovery . 13 8.3 Test of step response versus output pressure Test procedure and presentation of test results . 14 8.4 Test of step response versus output flow Test procedure and presentat

17、ion of test results . 15 8.5 Frequency response . 16 Annex A (normative) Classes of measurement accuracy 19 Bibliography . 20 BSISO17559:2003ISO :95571(3002)E iv ISO 3002 All rithgs reresvde Foreword ISO (the International Organization for Standardization) is a worldwide federation of national stand

18、ards 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 for which a technical committee has been established has the right to be represented on that committee. International orga

19、nizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given

20、in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75

21、% of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 17559 was prepared by Technical Committee ISO/TC 131, Flui

22、d power systems, Subcommittee SC 8, Product testing. BSISO17559:2003ISO 55713002:9)E( ISO 3002 r llAithgs reservde v Introduction This International Standard is intended to unify testing methods of positive-displacement electrically and electronically controlled hydraulic pumps so as to allow compar

23、ison of the performance of different components. Requirements for test installations, procedures and expression of results are described. BSISO17559:2003blank 3002:95571OSISBANRETNIITOTS LANDNADRA ISO 55713002:9)E( ISO 3002 r llAithgs reservde 1 Hydraulic fluid power Electrically controlled hydrauli

24、c pumps Test methods to determine performance characteristics 1S c o p e This International Standard specifies methods for determining the steady-state performance characteristics and dynamic performance characteristics of positive-displacement electrically and electronically controlled hydraulic pu

25、mps (hereafter referred to as “pump” or “pumps”), so as to allow comparison of the performance of different components. Pumps covered by this International Standard have the capacity to affect changes in the output flow or pressure in proportion to the electrical or electronic input signals. These p

26、umps can be of the load-sensing control type, servo-control type, or electrical variable displacement mechanism type, which control output flow and output pressure by feedback using electrical signals. The accuracy of measurement is divided into three classes, A, B and C, which are explained in Anne

27、x A. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3448, Industrial

28、liquid lubricants ISO viscosity classification ISO 4391, Hydraulic fluid power Pumps, motors and integral transmissions Parameter definitions and letter symbols ISO 4406, Hydraulic fluid power Fluids Method for coding the level of contamination by solid particles ISO 4409, Hydraulic fluid power Posi

29、tive displacement pumps, motors and integral transmissions Determination of steady-state performance ISO 5598, Fluid power systems and components Vocabulary 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 5598 and the following apply. 3.1 electricall

30、y controlled hydraulic pump variable displacement pump which is capable of controlling the pressure or flow rate, or the pressure and flow rate corresponding to an input signal 3.2 minimum flow command minimum input flow command signal needed to maintain the maximum working pressure BSISO17559:2003I

31、SO :95571(3002)E 2 ISO 3002 All rithgs reresvde 3.3 minimum controllable pressure minimum output pressure when the absolute value of the input pressure command signal is zero and the input flow command signal is maximum (see 7.2.4) 3.4 dead zone range wherein the output pressure or output flow being

32、 controlled by the input signal does not vary when the absolute value of the input signal increases from zero or decreases to zero 3.5 load volume gross volume of working fluid in the main pipelines from the outlet of the pump to be tested to the inlet of the loading valve 3.6 pressure compensation

33、condition in which the output flow starts to decrease by the variable displacement control mechanism when the output pressure approaches a set pressure 3.7 deadhead pressure output pressure without flow 4 Symbols 4.1 The physical quantity letter symbols and their suffixes used in this International

34、Standard (see Table 1), are fully explained in ISO 4391. Units are given in Table 1 and Annex A. 4.2 Graphical symbols used in Figures 1 and 2, showing test circuit diagrams, conform to ISO 1219-1 and ISO 1219-2. 5 Test installation General requirements 5.1 General 5.1.1 Unless otherwise specified,

35、install the pump with the output shaft horizontal and the drain port facing upwards. 5.1.2 Use a hydraulic test circuit conforming to Figure 1 for test pumps having a pressure control valve to control the pressure in the pressure-compensation state and a flow control valve to control the output flow

36、. 5.1.3 Use a hydraulic test circuit conforming to Figure 2 for test pumps that utilize electrical input signals to control the pressure in the pressure-compensation state and either the position or angle of the mechanism to vary the displacement of the pump. Table 1 Symbols and units Quantity Symbo

37、l Dimension a SI unit Power M L 2 T 3 W Pressure, differential pressure , M L 1 T 2 MPa Flow rate L 3 T 1 dm 3 /min Rotational speed T 1 min 1 a M = mass, L = length, T = time. P p p q n BSISO17559:2003ISO 55713002:9)E( ISO 3002 r llAithgs reservde 3 5.1.4 For applications where the pump will be par

38、t of a closed-loop control system it may be necessary to perform a frequency response test. Subclause 8.5 describes a pump test method. The need for the test should be agreed between the customer and manufacturer. Key 1 pump under test 2 loading valve 3 directional control valve 4 variable restricto

39、r 5 torque meter 6 torque indicator 7 speed meter 8 electrical pressure transducer 9 pressure gauge 10 electrical flow transducer 11 thermometer 12 control device 13 signal source 14 control device 15 signal source 16 recorder 17 electric motor 18 manual relief valve NOTE Details of the pump control

40、 valves are for illustration only. Figure 1 Pump with pressure-compensation control valve and flow control valve to control output flow BSISO17559:2003ISO :95571(3002)E 4 ISO 3002 All rithgs reresvde 5.2 General test apparatus 5.2.1 Set up a test rig conforming to 5.1.1 to 5.1.3 and Figures 1 and 2

41、as applicable. 5.2.2 Maintain the loading valve and variable restrictor in the test circuit at no loading and no restriction except for the conditions specified in the test procedure. If the loading valve is operated, open the variable restrictor completely and adjust the directional control valve s

42、o that the P port is closed. If the variable restrictor is operated, adjust the directional control valve so that the P port opens to the A port. 5.2.3 Set the manual relief valve integrated with the pump for safety purposes to limit the maximum steady- state pressure to no less than of the maximum

43、working pressure setting. Key 1 pump under test 2 loading valve 3 directional control value 4 variable restrictor 5 torque meter 6 torque indicator 7 speed meter 8 electrical pressure transducer 9 electrical flow transducer 10 pressure gauge 11 thermometer 12 control device 13 signal source 14 recor

44、der 15 electric motor 16 manual relief valve NOTE Details of the pump control valves are for illustration only. Figure 2 Pump with electrical input signals to control pressure-compensation and either the position or angle of the mechanism to vary displacement 125 % BSISO17559:2003ISO 55713002:9)E( I

45、SO 3002 r llAithgs reservde 5 6 General test conditions 6.1 Test fluid 6.1.1 The hydraulic fluid type and viscosity shall conform to ISO VG 32 or ISO VG 46 according to ISO 3448. 6.1.2 Maintain the fluid temperature at the pump inlet in the range of to . 6.1.3 Maintain the fluid contamination class

46、within or less according to ISO 4406. Conditions other than those indicated in this subclause should be agreed between the supplier and purchaser. 6.2 Ambient conditions The ambient temperature and any variation from still air conditions shall be recorded. 6.3 Steady-state conditions Take each set o

47、f measurements only when the values of the controlled parameters are within the limits given in Ta b l e 2 . 7 Tests of steady-state performance characteristics 7.1 General 7.1.1 The test circuit and measuring circuit shall conform to Figures 1 or 2 as applicable. NOTE In addition to the internal co

48、ntrol pressure supply as shown in Figure 2, it is possible to use an external control pressure supply. 7.1.2 Adjust the electric motor to the specified rotational speed. 7.1.3 The steady-state performance shall be determined in accordance with ISO 4409. 7.1.4 For pumps in accordance with Figure 2, t

49、he swivel angle or stroke in percent of the maximum value may be used as an alternative to the output flow. 7.2 Flow/pressure characteristics 7.2.1 Use the pump having pressure control and flow control functions. Table 2 Limits of permissible variation in the values of controlled parameters Controlled parameter Limits of permissible variation in the values of controlled parameters for