BS ISO 20155:2017
Current
The latest, up-to-date edition.
Ships and marine technology. Test method of flow induced in-pipe noise source characteristics for a ship-used pump
Hardcopy , PDF
English
11-09-2017
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Two-port source model and test method of source
characteristic of pump
5 Test rig
6 Instrumentation
7 Test preparation
8 Test procedure
9 Data processing
10 Evaluation criteria for the test result
11 Test report
Annex A (informative) - Theoretical models of a two-port
source and transformation mutually between matrix
Z, S, T
Annex B (informative) - Evaluation of quantities at inlet and
outlet ports
Annex C (informative) - Judgment of effectiveness for the test
Annex D (informative) - Formulae for determining passive
characteristics of noise source
Annex E (informative) - Formulae for determining active
characteristics of source
Annex F (informative) - Verification of test method taking a
T-shaped sound excitor as a two-port acoustic source
Bibliography
Provides a test method for determining flow induced in-pipe noise source characteristics of a ship-used pump as a two-port sound source in laboratory conditions by measuring acoustic pressures in the pipe reaches of inlet and outlet.
| Committee |
SME/32
|
| DevelopmentNote |
Supersedes 17/30317139 DC. (09/2017)
|
| DocumentType |
Standard
|
| Pages |
36
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This document specifies a test method for determining flow induced in-pipe noise source characteristics of a ship-used pump as a two-port sound source in laboratory conditions by measuring acoustic pressures in the pipe reaches of inlet and outlet.
The test method is applicable to all types of centrifugal pumps with a diameter over 50mm operating under steady conditions.
The suitable frequency range of the test method is about 10Hz to 1000Hz, and the upper frequency is dependent on the inner diameter of the pipe, in which the plane acoustic wave propagates.
| Standards | Relationship |
| ISO 20155:2017 | Identical |
| IEC 60565:2006 | Underwater acoustics - Hydrophones - Calibration in the frequency range 0,01 Hz to 1 MHz |
| ISO 5598:2008 | Fluid power systems and components Vocabulary |
| ISO 10767-1:2015 | Hydraulic fluid power — Determination of pressure ripple levels generated in systems and components — Part 1: Method for determining source flow ripple and source impedance of pumps |
| ISO 10767-2:1999 | Hydraulic fluid power Determination of pressure ripple levels generated in systems and components Part 2: Simplified method for pumps |
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