Meeting the Pump Users Needs (eBook)

The Proceedings of the 12th International Pump Technical Conference

Sam Stuart (Autor)

eBook Download: PDF

2013 | 1. Auflage
589 Seiten
Elsevier Science (Verlag)
978-1-4831-3554-0 (ISBN)

Infos

Meeting the Pump Users Needs is a documentation of the 12th International Pump Technical Conference. Pump makers have always understood that their equipment provides an essential service to the pump users. Pumps have been designed and built to satisfy the needs of the user. The main thrust of this book is to share between users, specifiers, and makers their knowledge and experiences leading to better understanding of what the user needs now and would like for the future, and what the designer/maker can provide now and may be able to offer for the future. This book also describes an unusual method of calculating a head generated across a multistage pump when the impeller diameters are changed. The method leads to significantly larger calculated changes of head than predicted from the conventional affinity law approach. This text is a useful reference and source of information for engineering students and those conducting research on pump manufacturing.

Dr. Sam Stuart is a physiotherapist and a research Fellow within the Balance Disorders Laboratory, OHSU. His work focuses on vision, cognition and gait in neurological disorders, examining how technology-based interventions influence these factors. He has published extensively in world leading clinical and engineering journals focusing on a broad range of activities such as real-world data analytics, algorithm development for wearable technology and provided expert opinion on technology for concussion assessment for robust player management. He is currently a guest editor for special issues (sports medicine and transcranial direct current stimulation for motor rehabilitation) within Physiological Measurement and Journal of NeuroEngineering and Rehabilitation, respectively.

Inhalt

Front Cover 1
Meeting the Pump Users Needs 2
Copyright Page 3
Table of Contents 6
12 TH TECHNICAL CONFERENCE 8
INTRODUCTION 8
Chapter 1. "Modular Design" an approach to optimise pump performances saving manufacturing costs 12
ABSTRACT 13
TOPICS 14
SINGLE STAGE PUMP 15
MULTISTAGE PUMP 19
CONCLUSIONS 22
REFERENCES 22
Chapter 2. Concurrent design in centrifugal pumps 23
1. INTRODUCTION 25
2. CONCEPT OF CONCURRENT DESIGN 26
3. SCOPE OF PRESENT WORK 26
4. APPROACH TO THE PROBLEM 26
5. EXPERIMENTAL VERIFICATION 31
6. RESULTS & DISCUSSION
7. CONCLUSIONS 32
REFERENCES 33
Chapter 3. Development and operational performance of Fluiglide thin surface coatings to Yorkshire Water medium scale water supply pumps 46
Summary 46
1. Introduction 47
2. Description of Installation 53
3. Results 55
4. Discussion of Results 56
5. Future Programme 57
Chapter 4. Exachem - A new design for canned motor pumps 58
Introduction 58
Firstl., the shaft seals 58
Secondly, antifriction bearings 58
Operation 62
Maintenance 62
Design description of the EXACHEM 62
Conclusion 68
Chapter 5. Centrifugal pump performance testing — power industry user requirements 69
Abstract 69
1. Introduction 70
2. Notation 71
3. Centrifugal Pump Test Specifications 72
4. A User View on Pump Testing Standard Specifications 74
5. Essential Content for a Future Pump Test Standard 79
6. Special Test Specifications- Proposed Areas for Research & Development
7. Conclusions 89
Acknowledgement 90
References 90
APPENDIX A 92
APPENDIX B 94
Chapter 6. Standard pumps for large projects 99
INTRODUCTION 99
NATURE OF THE PROJECT 99
PUMP TYPE SELECTION 99
DUTY HEAD CALCULATIONS 103
PROGRAMME REQUIREMENTS 104
PROCUREMENT PLAN 105
PUMP WORKS TESTING 106
SITE TESTING 108
DOCUMENTATION 111
QUALITY ASSURANCE 113
LOCAL REPRESENTATION 114
CONCLUSIONS 115
Chapter 7. Comparison of various boiler feed pump-designs used in fossil-fired power stations 117
1.) INTRODUCTION 117
2.) DESIGN CONCEPT OF THE BFPs 118
3.) COMPARISON BETWEEN BARREL AND RING SECTION PUMPS 125
4.) TRANSIENTS 129
5.) CONCLUSION 133
References 134
Chapter 8. Avoid low flow pump problems 135
1. INTRODUCTION 135
2. THE CAUSES 135
3. THE EFFECTS 140
4. PREVENTATIVE MEASURES 143
5 MINIMUM FLOW, OR MINIMUM CONTINUOUS FLOW 149
6 CONCLUSION 150
Chapter 9. Centrifugal pump trouble shooting: the 90% solution 151
ABSTRACT 151
INTRODUCTION 152
PROBLEM DEFINITION AND REPORTED SYMTOMS 152
GATHERING PERFORMANCE DATA 155
REVIEW OF PUMP HYDRAULICS 158
OBTAINING MEASURED HYDRAULIC DATA AND CONVERTING IT INTO PERFORMANCE DATA 165
HYDRAULIC DATA ANALYSIS 166
MECHANICAL FAILURES WITHOUT ANY PRECEDING PERFORMANCE DECLINE 173
MECHANICAL FAILURE WITH ALMOST TOTAL LOSS OF PERFORMANCE 175
MECHANICAL/HYDRAULIC INTERRELATIONSHIPS 175
References 187
Chapter 10. A method for experimental and numerical characterisation of the vibratory behaviour of a main coolant pump 188
Summary 188
1.Introduction 188
2. Description of the problem 188
3. Description of the excitation process 189
4. Description of the analysis method 190
6. Experimental Results 191
7. Numerical Approach 192
8. Conclusion 192
9. References 192
Chapter 11. Cost-conscious operation of submersible pumps in water supply and industry 199
1. Introduction 199
2. Subaerslble Puape in Deep Helle 199
3. Submersible Pumpe with Horizontal Installation 205
4. Variable Speed for Energy Conservation 209
5.Variable Frequency Subeeralble Motors 213
6. Summery 216
7. References 216
Chapter 12. "Towards vibration reduction and isolation" 218
SUMMARY 218
1. INTRODUCTION 219
2. NAVAL PUMPS 219
3. INDUSTRIAL EQUIPMENT 229
4. SYSTEM DESIGN 232
5. CONCLUSIONS 232
6. ACKNOWLEDGMENTS 232
7. REFERENCES 233
Chapter 13. The thermodynamic experience in the UK water industry 234
INTRODUCTION 235
POTENTIAL AREAS OF ENERGY SAVINGS 237
IMPROVEMENTS IN PUMPING EFFICIENCY 237
EXISTING METHODS MEASUREMENT 239
THEORY 243
REFERENCE 256
Chapter 14. Considerations affecting the design of pump chambers for improved mechanical seal reliability 266
1. INTRODUCTION 267
2. STANDARDS 268
3. TECHNICAL BACKGROUND 269
4. EXPERIMENTAL WORK 280
5. OUTPUT FROM EXPERIMENTAL PROGRAMME 281
6. CONCLUSIONS 285
ACKNOWLEDGEMENTS 285
References 286
Chapter 15. Critical operating conditions of a mechanical seal 296
RESUME 296
PREFACE 296
EXPERIMENTAL RESEARCH 296
ANALTYIC RESEARCHES 298
CALCULATION OF THE SEAL 300
MODERNIZATION OF SEALS 301
LITERATURE 301
Chapter 16. Seals for FGD Duties 304
1. INTRODUCTION 304
2. FGD PROCESSES 304
3. SEAL ARRANGEMENT 306
4. FGD SEAL SIMULATION TRIALS 309
5. CONCLUSION 311
Chapter 17. Super stainless steels for seawater service 319
Summary 319
1. Introduction 319
2. Corrosion of Stainless Steels 320
3. Alloys Considered 321
4. Corrosion Testing 322
5. Results 324
6. Discussion 324
7. Conclusion 326
8. References 328
Chapter 18. The problems of design, installation and operation of cryogenic pumps 338
1. Introduction 339
2. Pump Types 340
3. Mechanical Seals 343
4. Cool Down 344
5. NPSH 347
6. Cavitation 348
7. Inlet Flow Distribution 350
8. Safety 350
9. Conclusion 350
Acknowledgement 351
References 351
Chapter 19. Experience in development and commercialization of adaptive metering pump units 359
SUMMARY 359
INTRODUCTION 359
1. BALANCE OF VOLUME LOSSES IN HYDROCYLINDER OF A METERING PUMP 360
2. EXPERIMENTAL STUDIES 363
3. PRACTICAL USE 364
NOMENCLATURE 365
REFERENCES 365
Chapter 20. Thermoplastic pumps reduce downtime. minimizing maintenance costs 368
THE PLASTICS 369
THERMOPLASTICS Vs METALS 370
SPOTLIGHT ON MATERIALS 372
POLYPROPYLENE 372
POLYETHYLENE 373
THE VINYLS 373
THE FLUOROPLASTICS 374
NON-STRUCTURAL COMPONENTS 374
NATURAL RUBBER 375
BUTYL 375
NEOPRENE 376
ETHYLENE PROPYLENE (NORDEL - DuPont) 376
OTHER MATERIALS 377
Chapter 21. Selection of an optimal centrifugal pump for transfer of abrasive slurries in concrete operating conditions 380
Chapter 22. Sigma mixed-flow pumps 400
1. INTRODUCTION 400
2.0 MODEL RESEARCH 402
3.0 DESIGN OF MIXED-FLOW PUMPS 412
Chapter 23. Optimization of pumping elements of eccentric screw pumps 422
1) Pumping Elements & Pumping Principle
2) Stator 422
3) Advantages of the corrected stator 424
Chapter 24. Rotary screw pumps for multiphase products 432
INTRODUCTION 432
APPLICATIONS 432
PUMP DESIGNS 433
PUMPING PRINCIPLE 434
DRESSER PUMP TESTS 435
ONCLUSION 440
Chapter 25. Pumping viscous fluids with progressing cavity pumps 447
Chapter 26. 'Omnidyne' — a fresh approach to integrated pumps and motors 465
MEETING THE PUMP USER'S NEEDS 465
'OMNIDYNE' DESCRIPTION 466
DEVELOPMENT HISTORY 469
APPLICATIONS AND THEIR DESIGN CRITERIA 474
CONCLUSIONS 486
Chapter 27. Use of positive displacement pumps for low lubricating media 487
Chapter 28. Reliability and efficiency in centrifugal pumps 511
INTRODUCTION 511
IN LINE PUMPS AND WATER TURBINES 511
BACK PULL OUT PUMPS 512
MECHANICAL SEALS 512
IN LINE PUMP PHILOSOPHY 512
FRONT PULL OUT PUMPS 513
VERTICAL IN LINE PUMPS 513
SITE TESTS AND EFFICIENCY FORMULA 514
MOTOR MANUFACTURE 514
CRITICAL SPEED OF THE COMBINED UNIT 514
VITAL IMPORTANCE OF RIGIDITY 515
IMPELLER PASSAGE GENERATION 515
HEAD PER STAGE AND CAUSES OF FRACTURE 515
PUMP OR COMPRESSOR 516
CONCLUSION 517
REFERENCES 517
Chapter 29. Criteria for the development of a modern magnetic clutch pump with maximum operational reliability 520
Summary 521
1. Active operational reliability 525
2. Passive operational reliability 540
Chapter 30. Special features of designing dynamic pumps with open impellers 544
Chapter 31. The quality of design 560
1. Setting the scene 560
2. The meaning of cost 564
3. Design methodology 565
4.2 Facility chart 566
6. Some generalised application aspects 574
7. References 578
Chapter 32. The change rule of end-head and flow of multistage centrifugal pump after diameter changed 579
PREFACE 579
1. GENERAL 579
2. FORMULA DEDUCTION 581
3. THL CHANGE RULL OF FLUW 588

Produkt-Details

• Erscheint lt. Verlag: 22.10.2013
• Sprache: englisch
• Themenwelt: Technik ► Bauwesen
• Themenwelt: Technik ► Maschinenbau
• ISBN-10: 1-4831-3554-3 / 1483135543
• ISBN-13: 978-1-4831-3554-0 / 9781483135540