1、BRITISH STANDARD BS ISO 16902-1:2003 Hydraulic fluid power Test code for the determination of sound power levels using sound intensity techniques: Engineering method Part 1: Pumps ICS 17.140.20; 23.100.10 BS ISO 16902-1:2003 This British Standard was published under the authority of the Standards Po
2、licy and Strategy Committee on 16 July 2003 BSI 16 July 2003 ISBN 0 580 42265 8 National foreword This British Standard reproduces verbatim ISO 16902-1:2003 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee MCE/18, Fluid power
3、 systems and components, which has the responsibility to: 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 Catalogu
4、e under 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 correc
5、t application. 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 infor
6、med; 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, ISO title page, pages ii to v, a blank page, pages 1 to 12, an inside back cover and a back cover. The BSI copyright notice displ
7、ayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO 16902-1:2003(E) OSI 3002INTERNATIONAL STANDARD ISO 16902-1 First edition 2003-05-01 Hydraulic fluid power Test code for the determination of sound power
8、levels using sound intensity techniques: Engineering method Part 1: Pumps Transmissions hydrauliques Code dessai pour la dtermination des niveaux de puissance acoustique laide des techniques dintensimtrie: Mthode dexpertise Partie 1: Pompes BSISO169021:2003ISO 16902-1:2003(E) DPlcsid Fremia ihTs PDF
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13、ISO cirypothg fofice saCe tsopale 65 eneG 1121-HC 02 av leT. 4 + 10 947 22 1 11 xaF0 947 22 14 + 9 74 E-mial coirypthgis.o gro We bwww.is.o groii ISO 3002 Allr ihgtsser edevrBS3002:120961OSIBSISO169021:2003ISO 16902-1:2003(E) I SO 3002 All irhgts seredevr iiiContents Page Foreword iv Introduction v
14、1 Scope 1 2 Normative references . 1 3 Terms and definitions. 2 4 Sound power level determination . 2 5 Installation and mounting conditions . 2 5.1 General. 2 5.2 Pump mounting. 2 5.3 Drive coupling . 2 5.4 Hydraulic circuit 2 6 Measurement surfaces . 3 6.1 General. 3 6.2 Piping . 3 6.3 Pump mounti
15、ng. 3 6.4 Reflecting plane 8 6.5 Drive motor and drive couplings. 9 7 Operating conditions 9 8 Measurement uncertainty. 9 9 Information to be recorded 9 9.1 General. 9 9.2 Pump under test 10 10 Test report 11 Bibliography . 12 BSISO169021:2003IS-20961 O1:(3002E) iv I SO 3002 All irhgts seredevrForew
16、ord 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 for which a techni
17、cal 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) on all matters of e
18、lectrotechnical standardization. International Standards are drafted in accordance with the rules given 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
19、the member bodies 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 document may be the subject of patent rights. ISO shall not be held responsible for i
20、dentifying any or all such patent rights. ISO 16902-1 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 8, Product testing. ISO 16902 consists of the following parts, under the general title Hydraulic fluid power Test code for the determination of sound power level
21、s using sound intensity techniques: Engineering method: Part 1: Pumps Part 2: Motors 1)1) In preparation. BSISO169021:2003IS-20961 O1:(3002E) I SO 3002 All irhgts seredevr vIntroduction In hydraulic fluid power systems, power is transmitted and controlled through a liquid under pressure in a closed
22、circuit. Pumps are components that convert rotary mechanical power into fluid power. During the process of converting mechanical power into fluid power, airborne noise, fluid-borne noise and structure-borne noise are radiated from the pump. The airborne noise level of a hydraulic fluid power pump is
23、 an important consideration in component selection. ISO 4412-1 1describes a method of taking noise level measurements but requires a very specialized and costly test environment. The procedures described in this part of ISO 16902 do not require specialized and expensive test conditions but can be ex
24、pected to achieve “engineering” or “survey” levels of accuracy. The results should be sufficiently accurate so that comparisons can be made between pumps. It should be noted that sound power is physically a function of the test environment, and may in some cases differ from the sound power of the sa
25、me source determined under other conditions. BSISO169021:20033002:120961OSISBBSISO169021:2003INTENRATIONAL TSANDADR IS-20961 O1:(3002E)I SO 3002 All irhgts seredevr 1Hydraulic fluid power Test code for the determination of sound power levels of pumps using sound intensity techniques: Engineering met
26、hod Part 1: Pumps 1 Scope This part of ISO 16902 establishes a test code based on ISO 9614-1 and ISO 9614-2 for determining the sound power levels of a hydraulic fluid power pump under controlled conditions of installation and operation. The sound power level will include sound power radiated by any
27、 piping within the measurement surface. This part of ISO 16902 is suitable for providing a basis for comparing the airborne noise levels of any type of pump that is normally used to convert rotary mechanical power to hydraulic fluid power, incorporating valves, solenoids, drive gears, couplings or a
28、ny other auxiliary device normally fitted in service. 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 (includi
29、ng any amendments) applies. ISO 3448, Industrial liquid lubricants ISO viscosity classification ISO 3744:1994, Acoustics Determination of sound power levels of noise sources using sound pressure Engineering method in an essentially free field over a reflecting plane ISO 5598, Fluid power systems and
30、 components Vocabulary ISO 6743-4, Lubricants, industrial oils and related products (class L) Classification Part 4: Family H (Hydraulic systems) ISO 9614-1:1993, Acoustics Determination of sound power levels of noise sources using sound intensity Part 1: Measurement at discrete points ISO 9614-2:19
31、96, Acoustics Determination of sound power levels of noise sources using sound intensity Part 2: Measurement by scanning ISO 9614-3, Acoustics Determination of sound power levels of noise sources using sound intensity Part 3: Precision method for measurement by scanning IEC 61043, Electroacoustics I
32、nstruments for the measurement of sound intensity Measurements with pairs of pressure sensing microphones BSISO169021:20031ISO 16902-1:2003(E) 2 I SO 3002 All irhgts seredevr3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 5598 and the following apply
33、. 3.1 pumping frequency frequency determined as follows: 60 nz where n is the pump shaft speed in revolutions per minute; z is the number of pumping chambers per revolution. 4 Sound power level determination The sound power level shall be determined in accordance with ISO 9614-1, ISO 9614-2 or ISO 9
34、614-3. In the above standards the quantity to be measured is sound intensity level in one octave and one-third octave frequency bands, while the quantity to be determined is sound power level in one octave and one-third octave frequency bands. Because noise generated by pumps is dominated by the har
35、monics of pumping frequency, measurements of narrow band frequency are useful and are permitted in this part of ISO 16902. 5 Installation and mounting conditions 5.1 General If two or more pumps are coupled together, they may be treated as a single pump. The operating conditions for each pump should
36、 be stated in the report. 5.2 Pump mounting It is desirable that the pump mounting be constructed so that the noise radiated from the mounting is as low as possible. This shall be done by passive means (e.g. using a high damping material). 5.3 Drive coupling The drive coupling shall conform to the p
37、ump manufacturers recommendations. 5.4 Hydraulic circuit 5.4.1 The circuit shall include all oil filters, oil coolers, reservoirs and restrictor valves as required to conform to the pump hydraulic operating conditions. 5.4.2 The test fluid, temperature and contamination level shall conform to the pu
38、mp manufacturers recommendations. BSISO169021:20032ISO 16902-1:2003(E) I SO 3002 All irhgts seredevr 35.4.3 Inlet and discharge lines shall be installed with diameters applicable to the pump manufacturers recommendations. Care shall be exercised when assembling inlet lines in order to prevent air le
39、aking into the circuit. 5.4.4 The inlet pressure sensor shall be mounted at the same height as the pump inlet or shall be calibrated for any height difference. 5.4.5 The load valve should be located so that it has negligible influence on the noise level of the pump. 5.4.6 A stable load valve shall b
40、e used. NOTE Unstable load valves in the discharge line can generate and transmit noise through the fluid and piping, that can emerge as airborne noise at the pump. 5.4.7 All fluid lines shall operate as in a working installation (i.e. not wrapped in sound insulating material). See ISO 9614-1:1993,
41、0.3, and ISO 9614-2:1996, 0.4. 6 Measurement surfaces 6.1 General Alternative mounting arrangements are depicted in Figures 1 to 5. Measurement surfaces should conform to the recommendations given in ISO 9614-1, ISO 9614-2 or ISO 9614-3. 6.2 Piping To simplify the geometry of measurement surfaces, i
42、f possible do not pass piping through them. If reflecting planes are used, pass the piping through these. If there is no alternative to passing the piping through the measurement surface, split the surface into segments with the split lines on the pipe centre line (see Figure 5). It is permissible t
43、o shield piping that is outside the measurement surface providing that this shielding does not account for more than 10 % of the area of the measurement surface. 6.3 Pump mounting 6.3.1 If a pump is flange-mounted, one of the measurement surfaces shall be aligned with the mounting face. 6.3.2 If the
44、 pump is flange-mounted to a bell housing or bracket where the noise radiated from the pump toward the drive motor cannot be measured at the mounting face, a reflecting plane coincident with the mounting face may be used. 6.3.3 If a pump is foot mounted, the floor may be used as a reflecting plane.
45、BSISO169021:20033ISO 16902-1:2003(E) 4 I SO 3002 All irhgts seredevrKey 1 piping 2 pump under test 3 measurement surface 4 soft rubber seal 5 prime mover 6 reflecting plane Figure 1 Reflecting plane at pump mounting face with rigid support for prime mover and with pipes passing through reflecting pl
46、ane BSISO169021:20034ISO 16902-1:2003(E) I SO 3002 All irhgts seredevr 5Key 1 piping 2 pump under test 3 measurement surface 4 soft rubber seal 5 prime mover 6 reflecting plane Figure 2 Reflecting plane at pump mounting face and underneath, having rigid support for prime mover and with pipes passing
47、 through reflecting plane BSISO169021:20035ISO 16902-1:2003(E) 6 I SO 3002 All irhgts seredevrKey 1 piping 2 pump under test 3 measurement surface 4 soft rubber seal 5 prime mover 6 reflecting plane 7 reflecting plane isolated from support frame Figure 3 Reflecting plane at pump mounting face and un
48、derneath, having non-rigid support for prime mover and with pipes passing through reflecting plane BSISO169021:20036ISO 16902-1:2003(E) I SO 3002 All irhgts seredevr 7Key 1 piping 2 pump under test 3 measurement surface 4 soft rubber seal 5 prime mover 6 reflecting plane 7 reflecting plane isolated
49、from the support frame Figure 4 Reflecting plane at pump mounting face and non-rigid support for prime mover and with pipes passing through reflecting plane BSISO169021:20037ISO 16902-1:2003(E) 8 I SO 3002 All irhgts seredevrKey 1 piping 2 pump under test 3 measurement surface 4 soft rubber seal 5 prime mover 6 reflecting plane Figure 5 Example of dividin
