This document describes hydraulic performance tests (including cavitation tests) using a small size pump (centrifugal, mixed flow or axial pump, hereinafter referred to as a \u201cmodel pump\u201d).<\/p>\n
This document is used for pump acceptance tests with a geometrically similar model pump to guarantee the performance of a large size pump manufactured for practical use (hereinafter, a \u201cprototype pump\u201d). This document, however does not preclude a temporary assembly inspection or other tests on the prototype pump. Moreover, it is preferable to conduct the tests with prototype pumps unless<\/p>\n
the capacity of the pump, namely its flow rate and\/or its power input, is beyond the limitations of the test facility, though it is difficult to set a criterion for carrying out a model pump test instead of the prototype pump test in terms of the volume rate of flow or the power input,<\/p>\n<\/li>\n
a part of the pump is to be constructed by concrete walls and reproduction of the whole assembly is impractical,<\/p>\n<\/li>\n
model tests are specified by the purchaser, or<\/p>\n<\/li>\n
it is difficult to carry out the prototype pump test due to any other reasons.<\/p>\n<\/li>\n<\/ul>\n
This document applies to performance tests under steady operating conditions corresponding to the prototype pump.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | Introduction <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions 3.1 General terms <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 3.2 Terms and definitions relating to performance <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4 Symbols and suffixes <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 5 Test types and measurement items 6 Model pump 6.1 Extent of model pump <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 6.2 Dimensional ranges of model pump 6.2.1 Reynolds number 6.2.2 Dimension of impeller 6.2.3 Pump total head 6.3 Construction of model pump <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 7 Performance test 7.1 Test installation and measuring instruments <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 7.2 Test conditions 7.2.1 Test operation 7.2.2 Stability of operation <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 7.3 Number of measurement points 7.4 Pump total head 7.4.1 General <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 7.4.2 Measuring instruments 7.4.3 Liquid column manometer 7.4.4 Spring pressure gauge 7.4.5 Digital pressure gauge 7.4.6 Pressure tappings <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 7.4.7 Damper 7.5 Volume rate of flow 7.5.1 Orifice plate nozzle and venturi tube 7.5.2 Electromagnetic flowmeter 7.5.3 Mass method or volumetric method <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 7.6 Speed of rotation 7.6.1 Measurement method 7.6.2 Measuring instruments 7.7 Pump power input 7.7.1 Method for measuring pump power input 7.7.2 Measurement of torque <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 7.8 Measurement uncertainty 7.9 Calculation of pump power input, pump power output, and pump efficiency 8 Cavitation test and NPSH3 test 8.1 Concept of test 8.2 Test method 8.2.1 General <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 8.2.2 Cavitation test 8.2.3 NPSH3 test 8.3 Characteristics of the test liquid 8.4 Test installation 9 Indication of performance and evaluation of test results 9.1 Arrangement of measured values and indication of performance test results 9.1.1 Conversion at specified speed of rotation <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 9.1.2 Performance curves of model pump <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 9.1.3 Performance curves of adjustable vane type model pump 9.2 Conversion of various quantities from model to prototype pump 9.2.1 Conversion of volume rate of flow, pump total head and pump power input <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 9.2.2 Calculation of volumetric, mechanical and hydraulic efficiency ratios 9.3 Evaluation of test results <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 9.3.1 Performance curve 9.3.2 Pump total head 9.3.3 Pump efficiency 9.3.4 Cavitation performance <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | 9.4 Preparation of test results sheet 10 Prototype pump <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Annex A (informative) Additional tests <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | Annex B (informative) Calculation of measurement uncertainty <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | Annex C (informative) Hydraulic performance conversion formulae <\/td>\n<\/tr>\n | ||||||
| 50<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Rotodymanic pumps. Hydraulic performance acceptance test using a model pump<\/b><\/p>\n |