Centrifugal pumps:
Gespeichert in:
| 1. Verfasser: | |
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| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Berlin [u.a.]
Springer
2014
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| Ausgabe: | 3. ed. |
| Schlagworte: | |
| Online-Zugang: | Inhaltstext Inhaltsverzeichnis |
| Beschreibung: | XLI, 1116 S. Ill., graph. Darst. |
| ISBN: | 9783642401138 |
Internformat
MARC
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| 100 | 1 | |a Gülich, Johann Friedrich |d 1939- |e Verfasser |0 (DE-588)1067067396 |4 aut | |
| 245 | 1 | 0 | |a Centrifugal pumps |c Johann Friedrich Gülich |
| 250 | |a 3. ed. | ||
| 264 | 1 | |a Berlin [u.a.] |b Springer |c 2014 | |
| 300 | |a XLI, 1116 S. |b Ill., graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 650 | 0 | 7 | |a Kreiselpumpe |0 (DE-588)4032979-3 |2 gnd |9 rswk-swf |
| 689 | 0 | 0 | |a Kreiselpumpe |0 (DE-588)4032979-3 |D s |
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Datensatz im Suchindex
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CONTENTS
1 FLUID DYNAMIC PRINCIPLES 1
1.1 FLOW IN THE ABSOLUTE AND RELATIVE REFERENCE FRAME 1
1.2 CONSERVATION EQUATIONS 2
1.2.1 CONSERVATION OF MASS 2
1.2.2 CONSERVATION OF ENERGY 3
1.2.3 CONSERVATION OF MOMENTUM 5
1.3 BOUNDARY LAYERS, BOUNDARY LAYER CONTROL 7
1.4 FLOW ON CURVED STREAMLINES 11
1.4.1 EQUILIBRIUM OF FORCES 11
1.4.2 FORCED AND FREE VORTICES 15
1.4.3 FLOW IN CURVED CHANNELS 17
1.5 PRESSURE LOSSES 18
1.5.1 FRICTION LOSSES (SKIN FRICTION) 19
1.5.2 INFLUENCE OF ROUGHNESS ON FRICTION LOSSES 21
1.5.3 LOSSES DUE TO VORTEX DISSIPATION (FORM DRAG) 25
1.6 DIFFIISERS 27
1.7 SUBMERGED JETS 32
1.8 EQUALIZATION OF NON-UNIFORM VELOCITY PROFILES 33
1.9 FLOW DISTRIBUTION IN PARALLEL CHANNELS, PIPING NETWORKS 36
REFERENCES 41
2 PUMP TYPES AND PERFORMANCE DATA 43
2.1 BASIC PRINCIPLES AND COMPONENTS 43
2.2 PERFORMANCE DATA 47
2.2.1 SPECIFIC WORK, HEAD 47
2.2.2 NET POSITIVE SUCTION HEAD, NPSH 48
2.2.3 POWER AND EFFICIENCY 50
2.2.4 PUMP CHARACTERISTICS 51
2.3 PUMP TYPES AND THEIR APPLICATIONS 51
2.3.1 OVERVIEW 51
2.3.2 CLASSIFICATION OF PUMPS AND APPLICATIONS 53
XXV
HTTP://D-NB.INFO/1038181232
XXVI CONTENTS
2.3.3 PUMP TYPES 55
2.3.4 SPECIAL PUMP TYPES 72
REFERENCES 77
3 PUMP HYDRAULICS AND PHYSICAL CONCEPTS 79
3.1 ONE-DIMENSIONAL CALCULATION WITH VELOCITY TRIANGLES 79
3.2 ENERGY TRANSFER IN THE IMPELLER, SPECIFIC WORK AND HEAD 83
3.3 FLOW DEFLECTION CAUSED BY THE BLADES. SLIP FACTOR 85
3.4 DIMENSIONLESS COEFFICIENTS, SIMILARITY LAWS AND SPECIFIC SPEED .
90
3.5 POWER BALANCE AND EFFICIENCIES 93
3.6 CALCULATION OF SECONDARY LOSSES 95
3.6.1 DISK FRICTION LOSSES 95
3.6.2 LEAKAGE LOSSES THROUGH ANNULAR SEALS 99
3.6.3 POWER LOSS CAUSED BY THE INTER-STAGE SEAL 108
3.6.4 LEAKAGE LOSS OF RADIAL OR DIAGONAL SEALS 108
3.6.5 LEAKAGE LOSSES IN OPEN IMPELLERS 109
3.6.6 MECHANICAL LOSSES ILL
3.7 BASIC HYDRAULIC CALCULATIONS OF COLLECTORS ILL
3.8 HYDRAULIC LOSSES 117
3.9 STATISTICAL DATA OF PRESSURE COEFFICIENTS, EFFICIENCIES AND LOSSES
. 123
3.10 INFLUENCE OF ROUGHNESS AND REYNOLDS NUMBER 132
3.10.1 OVERVIEW 132
3.10.2 EFFICIENCY SCALING 133
3.10.3 CALCULATION OF THE EFFICIENCY FROM LOSS ANALYSIS ! 135
3.11 MINIMIZATION OF LOSSES 140
3.12 COMPENDIUM OF EQUATIONS FOR HYDRAULIC CALCULATIONS 141
REFERENCES 156
4 PERFORMANCE CHARACTERISTICS 159
4.1 HEAD-CAPACITY CHARACTERISTIC AND POWER CONSUMPTION 160
4.1.1 THEORETICAL HEAD CURVE (WITHOUT LOSSES) 160
4.1.2 REAL CHARACTERISTICS WITH LOSSES 162
4.1.3 COMPONENT CHARACTERISTICS 165
4.1.4 HEAD AND POWER AT OPERATION AGAINST CLOSED
DISCHARGE VALVE 173
4.1.5 INFLUENCE OF PUMP SIZE AND SPEED 176
4.1.6 INFLUENCE OF SPECIFIC SPEED ON THE SHAPE OF THE
CHARACTERISTICS 177
4.2 BEST EFFICIENCY POINT 177
4.3 PREDICTION OF PUMP CHARACTERISTICS 182
4.4 RANGE CHARTS 183
4.5 MODIFICATION OF THE PUMP CHARACTERISTICS 186
4.5.1 IMPELLER TRIMMING 186
4.5.2 UNDER-FILING AND OVER-FILING OF THE BLADES AT THE
TRAILING EDGE 194
4.5.3 COLLECTOR MODIFICATIONS 195
CONTENTS XXVII
4.6 ANALYSIS OF PERFORMANCE DEVIATIONS 195
4.7 CALCULATION OF MODIFICATIONS OF THE PUMP CHARACTERISTICS 199
REFERENCES 203
5 PARTLOAD OPERATION, IMPACT OF 3-D FLOW PHENOMENA PERFORMANCE . 205
5.1 BASIC CONSIDERATIONS 205
5.2 THE FLOW THROUGH THE IMPELLER 209
5.2.1 OVERVIEW 209
5.2.2 PHYSICAL MECHANISMS 211
5.2.3 THE COMBINED EFFECT OF DIFFERENT MECHANISMS 217
5.2.4 RECIRCULATION AT THE IMPELLER INLET 219
5.2.5 FLOW AT THE IMPELLER OUTLET 225
5.2.6 EXPERIMENTAL DETECTION OF THE ONSET OF RECIRCULATION 227
5.3 THE FLOW IN THE COLLECTOR 228
5.3.1 FLOW SEPARATION IN THE DIFFUSER 228
5.3.2 PRESSURE RECOVERY IN THE DIFFUSER 232
5.3.3 INFLUENCE OF APPROACH FLOW ON PRESSURE RECOVERY
AND STALL 233
5.3.4 FLOW IN THE VOLUTE CASING 234
5.3.5 FLOW IN ANNULAR CASINGS AND VANELESS DIFIFUSERS 235
5.4 THE EFFECTS OF FLOW RECIRCULATION 236
5.4.1 EFFECTS OF FLOW RECIRCULATION AT THE IMPELLER INLET 236
5.4.2 EFFECT OF FLOW RECIRCULATION AT THE IMPELLER OUTLET 241
5.4.3 EFFECT OF OUTLET RECIRCULATION ON THE FLOW IN THE
IMPELLER SIDEWALL GAPS AND ON AXIAL THRUST 248
5.4.4 DAMAGING EFFECTS OF PARTLOAD RECIRCULATION 251
5.5 INFLUENCE OF FLOW SEPARATION AND RECIRCULATION ON THE
Q-H-CURVE 252
5.5.1 TYPES OF Q-H-CURVE INSTABILITY 252
5.5.2 SADDLE-TYPE INSTABILITIES 253
5.5.3 TYPE F INSTABILITIES 261
5.6 MEANS TO INFLUENCE THE SHAPE OF THE Q-H-CURVE 261
5.6.1 INTRODUCTION 261
5.6.2 INFLUENCING THE ONSET OF RECIRCULATION AT THE
IMPELLER INLET 262
5.6.3 INFLUENCING THE ONSET OF RECIRCULATION AT THE
IMPELLER OUTLET 265
5.6.4 ELIMINATING A TYPE F INSTABILITY 266
5.6.5 INFLUENCING THE SADDLE-TYPE INSTABILITY OF RADIAL
IMPELLERS WITH N
Q
50 267
5.6.6 INFLUENCING THE SADDLE-TYPE INSTABILITY OF RADIAL
IMPELLERS WITH N
Q
50 269
5.6.7 INFLUENCING THE INSTABILITY OF SEMI-AXIAL AND AXIAL
IMPELLERS 270
5.6.8 REDUCTION OF HEAD AND POWER AT SHUT-OFF 271
5.7 FLOW PHENOMENA IN OPEN AXIAL IMPELLERS 272
XXVIII CONTENTS
5.8 FLOW INSTABILITIES IN DOUBLE-ENTRY IMPELLERS AND DOUBLE VOLUTES .
280
REFERENCES 283
6 SUCTION CAPABILITY AND CAVITATION 287
6.1 CAVITATION PHYSICS 287
6.1.1 GROWTH AND IMPLOSION OF VAPOR BUBBLES IN A
FLOWING LIQUID 287
6.1.2 BUBBLE DYNAMICS 289
6.2 CAVITATION IN IMPELLER OR DIFFUSER 292
6.2.1 PRESSURE DISTRIBUTION AND CAVITY LENGTH 292
6.2.2 REQUIRED NPSH, EXTENT OF CAVITATION, CAVITATION CRITERIA . 294
6.2.3 SCALING LAWS FOR CAVITATING FLOWS 296
6.2.4 THE SUCTION SPECIFIC SPEED 299
6.2.5 EXPERIMENTAL DETERMINATION OF THE REQUIRED NPSH
R
302
6.2.6 CAVITATION IN ANNULAR SEALS 311
6.3 DETERMINATION OF THE REQUIRED NPSH 312
6.3.1 PARAMETERS INFLUENCING NPSH
R
312
6.3.2 CALCULATION OF THE NPSH
R
315
6.3.3 ESTIMATION OF THE NPSH
3
AS FUNCTION OF THE FLOW RATE 319
6.4 INFLUENCE OF THE FLUID PROPERTIES 323
6.4.1 THERMODYNAMIC EFFECTS 323
6.4.2 NON-CONDENSABLE GASES 326
6.4.3 NUCLEI CONTENT AND TENSILE STRESSES IN THE LIQUID 327
6.5 CAVITATION-INDUCED NOISE AND VIBRATIONS 329
6.5.1 EXCITATION MECHANISMS 329
6.5.2 CAVITATION NOISE MEASUREMENTS FOR QUANTIFYING THE
HYDRODYNAMIC CAVITATION INTENSITY 330
6.5.3 FREQUENCY CHARACTERISTICS OF CAVITATION NOISE 333
6.6 CAVITATION EROSION 335
6.6.1 TESTING METHODS 335
6.6.2 CAVITATION RESISTANCE 338
6.6.3 PREDICTION OF CAVITATION DAMAGE BASED ON CAVITY LENGTH . 340
6.6.4 PREDICTION OF CAVITATION DAMAGE BASED ON
CAVITATION NOISE 345
6.6.5 SOLID-BORNE NOISE MEASUREMENTS FOR CAVITATION
DIAGNOSIS 346
6.6.6 PAINT EROSION TESTS TO DETERMINE THE LOCATION OF
BUBBLE IMPLOSION 348
6.6.7 ONSET OF EROSION AND BEHAVIOR OF MATERIAL SUBJECT
TO DIFFERENT HYDRODYNAMIC CAVITATION INTENSITIES 349
6.6.8 SUMMARIZING ASSESSMENT 353
6.7 SELECTION OF THE INLET PRESSURE IN A PLANT 355
6.8 CAVITATION DAMAGE: ANALYSIS AND REMEDIES 358
6.8.1 RECORD DAMAGE AND OPERATION PARAMETERS 358
6.8.2 FORMS OF CAVITATION AND TYPICAL CAVITATION
DAMAGE PATTERNS 359
CONTENTS XXIX
6.8.3 REDUCTION OR ELIMINATION OF CAVITATION DAMAGE 369
6.9 INSUFFICIENT SUCTION CAPACITY: ANALYSIS AND REMEDIES 371
REFERENCES 372
7 DESIGN OF THE HYDRAULIC COMPONENTS 375
7.1 METHODS AND BOUNDARY CONDITIONS 375
7.1.1 METHODS FOR THE DEVELOPMENT OF HYDRAULIC COMPONENTS . 375
7.1.2 THE HYDRAULIC SPECIFICATION 376
7.1.3 CALCULATION MODELS 378
7.2 RADIAL IMPELLERS 380
7.2.1 DETERMINATION OF MAIN DIMENSIONS 380
7.2.2 IMPELLER DESIGN 389
7.2.3 CRITERIA FOR SHAPING THE BLADES 396
7.2.4 CRITERIA FOR SUCTION IMPELLER DESIGN 397
7.2.5 EXPLOITING THREE-DIMENSIONAL EFFECTS IN DESIGN 400
7.3 RADIAL IMPELLERS FOR SMALL SPECIFIC SPEEDS 401
7.3.1 TWO-DIMENSIONAL BLADES 401
7.3.2 PUMPING DISKS WITH CHANNELS OF CIRCULAR SECTION 402
7.3.3 IMPELLERS WITH STRAIGHT RADIAL BLADES 405
7.3.4 DOUBLE-ACTING IMPELLER WITH STRAIGHT RADIAL BLADES 406
7.4 RADIAL IMPELLERS FOR NON-CLOGGING PUMPS 407
7.5 SEMI-AXIAL IMPELLERS 415
7.6 AXIAL IMPELLERS AND DIFFUSERS 420
7.6.1 FEATURES 420
7.6.2 CALCULATION AND SELECTION OF MAIN DIMENSIONS 421
7.6.3 BASIC PROPERTIES OF AIRFOILS 426
7.6.4 BLADE DESIGN 432
7.6.5 PROFILE SELECTION 440
7.6.6 DESIGN OF AXIAL DIFFUSERS 442
7.7 INDUCERS 444
7.7.1 CALCULATION OF INDUCER PARAMETERS 445
7.7.2 DESIGN AND SHAPING OF AN INDUCER 450
7.7.3 MATCHING THE INDUCER TO THE IMPELLER 451
7.7.4 RECOMMENDATIONS FOR INDUCER APPLICATION 452
7.8 VOLUTE CASINGS 454
7.8.1 CALCULATION AND SELECTION OF MAIN DIMENSIONS 454
7.8.2 DESIGN AND SHAPING OF VOLUTE CASINGS 460
7.8.3 INFLUENCE OF THE VOLUTE SHAPE ON HYDRAULIC PERFORMANCE . 464
7.9 RADIAL DIFFUSERS WITH OR WITHOUT RETURN CHANNELS 467
7.9.1 CALCULATION AND SELECTION OF MAIN DIMENSIONS 467
7.9.2 DESIGN AND SHAPING OF RADIAL DIFFUSERS 473
7.10 SEMI-AXIAL DIFFIISERS 474
7.11 VOLUTES COMBINED WITH A DIFFUSER OR STAY VANES 477
7.12 ANNULAR CASINGS AND VANELESS DIFFUSERS 477
7.13 INLET CASINGS FOR BETWEEN-BEARING PUMPS 478
XXX CONTENTS
7.14 ANALYTICAL METHOD FOR IMPELLER DESIGN 483
7.14.1 MOTIVATION, SCOPE AND OBJECTIVES 483
7.14.2 MERIDIONAL SECTION 484
7.14.3 BLADE DESIGN 490
7.14.4 PROCEDURE FOR DEVELOPING A DESIGN SYSTEMATIC 490
7.14.5 SOME RESULTS 494
REFERENCES 494
8 NUMERICAL FLOW CALCULATIONS 499
8.1 OVERVIEW 499
8.2 QUASI-3D-PROCEDURES AND 3D-EULER-CALCULATIONS 501
8.2.1 QUASI-3D-PROCEDURES 501
8.2.2 THREE-DIMENSIONAL EULER-PROCEDURES 502
8.3 BASICS OF NAVIER-STOKES CALCULATIONS 503
8.3.1 THE NAVIER-STOKES EQUATIONS 503
8.3.2 TURBULENCE MODELS 504
8.3.3 TREATMENT OF NEAR-WALL FLOWS 508
8.3.4 GRID GENERATION 511
8.3.5 NUMERICAL PROCEDURES AND CONTROL PARAMETERS 514
8.3.6 BOUNDARY CONDITIONS 516
8.3.7 INITIAL CONDITIONS 518
8.3.8 POSSIBILITIES OF 3D-NAVIER-STOKES-CALCULATIONS 519
8.4 AVERAGING AND POST-PROCESSING 522
8.5 IMPELLER CALCULATIONS 532
8.5.1 GLOBAL PERFORMANCE AT BEST EFFICIENCY FLOW RATE 532
8.5.2 VELOCITY PROFILES 535
8.5.3 INFLUENCING PARAMETERS 536
8.5.4 SAMPLE CALCULATION 536
8.6 CALCULATION OF COLLECTORS AND STAGES 539
8.6.1 SEPARATE CALCULATION OF THE COLLECTOR 539
8.6.2 STEADY CALCULATIONS OF STAGES OR COMPLETE PUMPS 541
8.6.3 UNSTEADY CALCULATIONS 542
8.7 TWO-PHASE AND CAVITATING FLOWS 543
8.8 CALCULATION STRATEGY, UNCERTAINTIES, QUALITY ISSUES 548
8.8.1 UNCERTAINTIES, SOURCES AND REDUCTION OF ERRORS 548
8.8.2 CFD QUALITY ASSURANCE 550
8.8.3 COMPARISON BETWEEN CALCULATION AND EXPERIMENT 561
8.9 CRITERIA FOR ASSESSMENT OF NUMERICAL CALCULATIONS 563
8.9.1 GENERAL REMARKS 563
8.9.2 CONSISTENCE AND PLAUSIBILITY OF THE CALCULATION 564
8.9.3 WILL THE SPECIFIED PERFORMANCE BE REACHED? 564
8.9.4 MAXIMIZATION OF THE HYDRAULIC EFFICIENCY 565
CONTENTS XXXI
8.9.5 STABILITY OF THE HEAD-CAPACITY CURVE 567
8.9.6 UNSTEADY FORCES 568
8.10 FUNDAMENTAL CONSIDERATIONS ON CFD-CALCULATIONS 568
REFERENCES 571
9 HYDRAULIC FORCES 575
9.1 FLOW PHENOMENA IN THE IMPELLER SIDEWALL GAPS 575
9.2 AXIAL FORCES 592
9.2.1 GENERAL PROCEDURE FOR CALCULATING AXIAL FORCES 592
9.2.2 SINGLE-STAGE PUMPS WITH SINGLE-ENTRY OVERHUNG
IMPELLERS 595
9.2.3 MULTISTAGE PUMPS 596
9.2.4 DOUBLE-ENTRY IMPELLERS 604
9.2.5 SEMI-AXIAL IMPELLERS 605
9.2.6 AXIAL PUMPS 606
9.2.7 EXPELLER VANES 606
9.2.8 SEMI-OPEN AND OPEN IMPELLERS 609
9.2.9 UNSTEADY AXIAL THRUST 609
9.2.10 AXIAL THRUST CALCULATION OVERVIEW 610
9.3 RADIAL FORCES 613
9.3.1 DEFINITION AND SCOPE 613
9.3.2 MEASUREMENT OF RADIAL FORCES 615
9.3.3 PUMPS WITH SINGLE VOLUTES 616
9.3.4 PUMPS WITH DOUBLE VOLUTES 622
9.3.5 PUMPS WITH ANNULAR CASINGS 624
9.3.6 DIFFUSER PUMPS 624
9.3.7 RADIAL FORCES CREATED BY NON-UNIFORM APPROACH FLOWS . 625
9.3.8 AXIAL PUMPS 626
9.3.9 RADIAL FORCES IN PUMPS WITH SINGLE-CHANNEL IMPELLERS 627
9.3.10 RADIAL THRUST BALANCING 640
9.3.11 RADIAL THRUST PREDICTION 641
REFERENCES 646
10 NOISE AND VIBRATIONS 649
10.1 UNSTEADY FLOW AT THE IMPELLER OUTLET 650
10.2 PRESSURE PULSATIONS 653
10.2.1 GENERATION OF PRESSURE PULSATIONS 654
10.2.2 NOISE GENERATION IN A FLUID 654
10.2.3 INFLUENCE PARAMETERS OF THE PUMP 655
10.2.4 INFLUENCE OF THE SYSTEM 658
10.2.5 SCALING LAWS 660
10.2.6 MEASUREMENT AND EVALUATION OF PRESSURE PULSATIONS 661
10.2.7 PRESSURE PULSATIONS OF PUMPS IN OPERATION 663
10.2.8 DAMAGING EFFECTS OF PRESSURE PULSATIONS 663
10.2.9 DESIGN GUIDELINES 666
XXXII CONTENTS
10.3 COMPONENT LOADING BY TRANSIENT FLOW CONDITIONS 668
10.4 RADIATION OF NOISE 669
10.4.1 SOLID-BORNE NOISE 669
10.4.2 AIR-BORNE NOISE 671
10.5 OVERVIEW OF MECHANICAL VIBRATIONS OF CENTRIFUGAL PUMPS 674
10.6 ROTOR DYNAMICS 676
10.6.1 OVERVIEW 676
10.6.2 FORCES IN ANNULAR SEALS 677
10.6.3 HYDRAULIC IMPELLER INTERACTION 684
10.6.4 BEARING REACTION FORCES 686
10.6.5 EIGEN VALUES AND CRITICAL SPEEDS 687
10.6.6 ROTOR INSTABILITIES 690
10.7 HYDRAULIC EXCITATION OF VIBRATIONS 693
10.7.1 INTERACTION BETWEEN FLOWS THROUGH
ROTOR AND STATOR (RSI) 693
10.7.2 ROTATING STALL 705
10.7.3 VARIOUS HYDRAULIC EXCITATION MECHANISMS 708
10.8 GUIDELINES FOR THE DESIGN OF PUMPS WITH LOW SENSITIVITY
TO VIBRATIONS 720
10.9 ALLOWABLE VIBRATIONS 723
10.10 GENERAL VIBRATION DIAGNOSTICS 726
10.10.1 OVERVIEW 726
10.10.2 VIBRATION MEASUREMENTS 727
10.10.3 VIBRATION DIAGNOSTICS 729
10.11 BEARING HOUSING VIBRATIONS: MECHANISM, DIAGNOSTICS,
REMEDIES 737
10.11.1 HYDRAULIC EXCITATION MECHANISMS 738
10.11.2 MECHANICAL REACTION TO HYDRAULIC EXCITATION 742
10.11.3 HYDRAULIC VERSUS MECHANICAL REMEDIES 745
10.11.4 BEARING HOUSING VIBRATION DIAGNOSTICS 746
10.12 HYDRAULIC AND ACOUSTIC EXCITATION OF PIPE VIBRATIONS 757
10.12.1 EXCITATION OF PIPE VIBRATIONS BY PUMPS 758
10.12.2 EXCITATION OF PIPE VIBRATIONS BY COMPONENTS 760
10.12.3 ACOUSTIC RESONANCES IN PIPELINES 761
10.12.4 HYDRAULIC EXCITATION BY VORTEX STREETS 766
10.12.5 COUPLING OF FLOW PHENOMENA WITH ACOUSTICS 769
10.12.6 PIPE VIBRATION MECHANISMS 775
10.13 TORSIONAL VIBRATIONS 779
REFERENCES 783
11 OPERATION OF CENTRIFUGAL PUMPS 787
11.1 SYSTEM CHARACTERISTICS, OPERATION IN PARALLEL OR IN SERIES 787
11.2 PUMP CONTROL 792
11.3 STATIC AND DYNAMIC STABILITY 799
CONTENTS XXXIII
11.4 START-UP AND SHUT-DOWN 801
11.5 POWER FAILURE, WATER HAMMER 806
11.6 ALLOWABLE OPERATION RANGE 807
11.7 THE APPROACH FLOW TO THE PUMP 811
11.7.1 SUCTION PIPING LAYOUT 811
11.7.2 TRANSIENT SUCTION PRESSURE DECAY 813
11.7.3 PUMP INTAKES AND SUCTION FROM TANKS WITH FREE
LIQUID LEVEL 819
11.7.4 CAN PUMPS 834
11.8 DISCHARGE PIPING 835
REFERENCES 839
12 TURBINE OPERATION, GENERAL CHARACTERISTICS 841
12.1 REVERSE RUNNING CENTRIFUGAL PUMPS USED AS TURBINES 841
12.1.1 THEORETICAL AND ACTUAL CHARACTERISTICS 841
12.1.2 RUNAWAY AND RESISTANCE CHARACTERISTICS 847
12.1.3 ESTIMATION OF TURBINE CHARACTERISTICS FROM
STATISTICAL CORRELATIONS 849
12.1.4 ESTIMATION OF TURBINE CHARACTERISTICS FROM
LOSS MODELS 853
12.1.5 BEHAVIOR OF TURBINES IN PLANTS 856
12.2 GENERAL CHARACTERISTICS 861
REFERENCES 868
13 INFLUENCE OF THE MEDIUM ON PERFORMANCE 869
13.1 PUMPING HIGHLY VISCOUS FLUIDS 869
13.1.1 EFFECT OF VISCOSITY ON LOSSES AND PERFORMANCE
CHARACTERISTICS 869
13.1.2 ESTIMATION OF VISCOUS PERFORMANCE FROM THE
CHARACTERISTICS MEASURED WITH WATER 881
13.1.3 INFLUENCE OF VISCOSITY ON THE SUCTION CAPACITY 887
13.1.4 START-UP OF PUMPS IN VISCOUS SERVICE 888
13.1.5 VISCOUS PUMPING APPLICATIONS-
RECOMMENDATIONS AND COMMENTS 889
13.2 PUMPING OF GAS-LIQUID MIXTURES 890
13.2.1 TWO-PHASE FLOW PATTERNS IN STRAIGHT PIPE FLOW 890
13.2.2 TWO-PHASE FLOW IN PUMPS. PHYSICAL MECHANISMS 894
13.2.3 CALCULATION OF TWO-PHASE PUMP PERFORMANCE 903
13.2.4 RADIAL PUMPS OPERATING WITH TWO-PHASE FLOW 910
13.2.5 HELICO-AXIAL MULTIPHASE PUMPS 915
13.2.6 SYSTEM CURVES 919
13.2.7 SLUGS AND GAS POCKETS 921
13.2.8 FREE GAS, DISSOLVED GAS AND NPSH 922
XXXIV CONTENTS
13.3 EXPANSION OF TWO-PHASE MIXTURES IN TURBINES 924
13.3.1 CALCULATION OF THE WORK TRANSFER 924
13.3.2 PREDICTION OF TURBINE CHARACTERISTICS FOR
TWO-PHASE FLOW 926
13.4 HYDRAULIC TRANSPORT OF SOLIDS 929
13.5 NON-NEWTONIAN LIQUIDS 937
REFERENCES 940
14 SELECTION OF MATERIALS EXPOSED TO HIGH FLOW VELOCITIES 943
14.1 IMPELLER OR DIFFUSER FATIGUE FRACTURES 944
14.2 CORROSION 956
14.2.1 CORROSION FUNDAMENTALS 956
14.2.2 CORROSION MECHANISMS 957
14.2.3 CORROSION IN FRESH WATER, COOLING WATER, SEWAGE 963
14.2.4 CORROSION IN SEA WATER AND PRODUCED WATER 966
14.3 EROSION CORROSION IN DEMINERALIZED WATER 971
14.4 MATERIAL SELECTION AND ALLOWABLE FLOW VELOCITIES 980
14.4.1 DEFINITION OF FREQUENTLY ENCOUNTERED FLUIDS 980
14.4.2 METALLIC PUMP MATERIALS 982
14.4.3 IMPELLERS, DIFFUSERS AND CASINGS 989
14.4.4 WEAR RING MATERIALS 1000
14.4.5 SHAFT MATERIALS 1003
14.4.6 MATERIALS FOR FEED WATER AND CONDENSATE PUMPS 1004
14.4.7 MATERIALS FOR FGD-PUMPS 1005
14.4.8 COMPOSITE MATERIALS 1006
14.5 HYDRO-ABRASIVE WEAR 1008
14.5.1 INFLUENCE PARAMETERS 1008
14.5.2 QUANTITATIVE ESTIMATION OF HYDRO-ABRASIVE WEAR 1011
14.5.3 MATERIAL BEHAVIOR AND INFLUENCE OF SOLIDS PROPERTIES 1016
14.5.4 MATERIAL SELECTION 1021
14.5.5 ABRASIVE WEAR IN SLURRY PUMPS 1022
14.5.6 EROSION PATTERNS AND FLOW MECHANISMS 1024.
REFERENCES 1030
15 PUMP SELECTION AND QUALITY CONSIDERATIONS 1035
15.1 THE PUMP SPECIFICATION 1036
15.2 DETERMINATION OF PUMP TYPE AND SIZE 1038
15.3 TECHNICAL QUALITY CRITERIA 1044
15.3.1 HYDRAULIC CRITERIA 1044
15.3.2 MANUFACTURING QUALITY 1048
15.4 HIGH-ENERGY PUMPS 1053
REFERENCES 1057
CONTENTS XXXV
16 PUMP TESTING 1059
16.1 TYPES OF TESTS AND MEASUREMENTS TO BE TAKEN 1059
16.2 TEST LOOP CONFIGURATIONS 1061
16.2.1 TYPES AND LAYOUT OF CLOSED TEST LOOPS 1063
16.2.2 CLOSED TEST LOOP WITH PRESSURIZER 1063
16.2.3 SEMI-OPEN TEST LOOP 1068
16.2.4 CLOSED TEST LOOP WITH FLOW THROUGH TANK WITH
FREE WATER LEVEL 1069
16.2.5 OPEN TEST LOOPS 1070
16.3 INSTRUMENTATION 1072
16.3.1 PRESSURE MEASUREMENT 1073
16.3.2 FLOW RATE MEASUREMENT 1073
16.3.3 POWER, TORQUE AND EFFICIENCY MEASUREMENT 1078
16.4 TEST PREPARATION AND TEST PROCEDURES 1079
16.4.1 TEST PREPARATION 1079
16.4.2 PROCEDURE FOR PERFORMANCE TEST 1080
16.4.3 PROCEDURES FOR CAVITATION TESTING 1080
16.5 TEST EVALUATION AND ACCURACY 1081
16.6 POTENTIAL TESTING PROBLEMS AND REMEDIES 1083
REFERENCES 1083
17 APPENDICES 1085
17.1 UNITS AND UNIT CONVERSION 1085
17.2 PROPERTIES OF SATURATED WATER 1087
17.3 SOLUTION OF GASES IN WATER 1090
17.4 PHYSICAL CONSTANTS 1093
17.4.1 ATMOSPHERIC PRESSURE 1093
17.4.2 ACCELERATION DUE TO GRAVITY 1093
17.5 SOUND VELOCITY IN LIQUIDS 1093
17.6 MECHANICAL VIBRATIONS*BASIC NOTIONS 1094
17.7 HYDRAULIC SPECIFICATION 1104
REFERENCES 1109
BIBLIOGRAPHY 1111
INDEX 1113 |
| any_adam_object | 1 |
| author | Gülich, Johann Friedrich 1939- |
| author_GND | (DE-588)1067067396 |
| author_facet | Gülich, Johann Friedrich 1939- |
| author_role | aut |
| author_sort | Gülich, Johann Friedrich 1939- |
| author_variant | j f g jf jfg |
| building | Verbundindex |
| bvnumber | BV041581701 |
| classification_rvk | ZL 5900 |
| ctrlnum | (OCoLC)864529548 (DE-599)DNB1038181232 |
| dewey-full | 621.67 |
| dewey-hundreds | 600 - Technology (Applied sciences) |
| dewey-ones | 621 - Applied physics |
| dewey-raw | 621.67 |
| dewey-search | 621.67 |
| dewey-sort | 3621.67 |
| dewey-tens | 620 - Engineering and allied operations |
| discipline | Maschinenbau / Maschinenwesen |
| edition | 3. ed. |
| format | Book |
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| id | DE-604.BV041581701 |
| illustrated | Illustrated |
| indexdate | 2024-09-10T01:05:28Z |
| institution | BVB |
| isbn | 9783642401138 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-027026948 |
| oclc_num | 864529548 |
| open_access_boolean | |
| owner | DE-29T DE-83 |
| owner_facet | DE-29T DE-83 |
| physical | XLI, 1116 S. Ill., graph. Darst. |
| publishDate | 2014 |
| publishDateSearch | 2014 |
| publishDateSort | 2014 |
| publisher | Springer |
| record_format | marc |
| spelling | Gülich, Johann Friedrich 1939- Verfasser (DE-588)1067067396 aut Centrifugal pumps Johann Friedrich Gülich 3. ed. Berlin [u.a.] Springer 2014 XLI, 1116 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Kreiselpumpe (DE-588)4032979-3 gnd rswk-swf Kreiselpumpe (DE-588)4032979-3 s DE-604 Erscheint auch als Online-Ausgabe 978-3-642-40114-5 X:MVB text/html http://deposit.dnb.de/cgi-bin/dokserv?id=4388376&prov=M&dok_var=1&dok_ext=htm Inhaltstext DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027026948&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Gülich, Johann Friedrich 1939- Centrifugal pumps Kreiselpumpe (DE-588)4032979-3 gnd |
| subject_GND | (DE-588)4032979-3 |
| title | Centrifugal pumps |
| title_auth | Centrifugal pumps |
| title_exact_search | Centrifugal pumps |
| title_full | Centrifugal pumps Johann Friedrich Gülich |
| title_fullStr | Centrifugal pumps Johann Friedrich Gülich |
| title_full_unstemmed | Centrifugal pumps Johann Friedrich Gülich |
| title_short | Centrifugal pumps |
| title_sort | centrifugal pumps |
| topic | Kreiselpumpe (DE-588)4032979-3 gnd |
| topic_facet | Kreiselpumpe |
| url | http://deposit.dnb.de/cgi-bin/dokserv?id=4388376&prov=M&dok_var=1&dok_ext=htm http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027026948&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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