DECLARATION
ABSTRACT
摘要
Table of Content
NOMENCLATURE
CHAPTER Ⅰ INTRoDUCTION
1．1 Research background and literature review
1．1．1 Research status of pipe vibration in the compressor station
1．2 Research method for pipe vibration of the pipeline system
1．2．1 Overview of piping vibration
1．3 Common causes of piping vibration
1．3．1 Flow-induced turbulence
1．3．2 Mechanical excitation
1．3．3 Pulsation
1．3．4 Reciprocating／Positive Displacement Pumps and Compressors
1．3．5 Centrifugal Compressors(Rotating Stall)
1．3．6 Periodic Flow-Induced Excitation
1．3．7 Flow over components in the fluid stream
1．3．9 Vortex-Induced Vibration
1．4 Research objectives and content
1．4．1 Research objectives
1．5 Innovation Points and Technical Routes
1．5．1 Innovation points
1．5．2 Technical routes
1．6 Research content
CHAPTER Ⅱ VIBRATIoN THEORY AND PRELIMINARY ANALYSIS OF PIPE VIBRATION AT JYG COMPRESSOR GAS STATION
2．1 Introduction to the vibration principle
2．1．1 Superposition of simple harmonic vibration and vibration
2．1．2 Harmonic analysis of periodic vibrations
2．1．3 Response of the system under simple harmonic excitations
2．1．4 Calculation of pressure fluctuations in piping systems
2．2 JYG gas station vibration survey
2．3 Preliminary analysis on vibration cause of vibration
2．3．1 JYG compressor station pipe vibration testing
2．3．2 Test condition
2．3．3 Test Point
2．3．4 Vibration analysis and evaluation of the test results
2．3．5 Vibration screening
CHAPTER Ⅲ NUMERICAL SIMULATION AND CALCULATION METHOD FOR VIBRATION CHARACTERISTICS OF GAS STATION PIPE
3．1 Introduction of numerical simulation software for pipe characteristics
3．1．1 Pressure pulsation
3．1．2 Unbalanced exciting force
3．1．3 Pipeline model
3．2 Numerical simulation calculation method
3．2．1 Governing equations
3．2．2 Turbulence models
3．2．3 Discrete format
3．2．4 Pressure-velocity correlation algorithm
3．2．5 Modal analysis theory
3．2．6 Theory of harmonic response analysis
3．3 Numerical simulation calculation process
3．3．1 Physical model of the pipe
3．3．2 Grid partitioning
CHAPTER Ⅳ SIMULATION RESULTS AND ANALYSIS OF THE PIPE VIBRATION
4．1 Flow field simulation
4．1．1 Fluid analysis in one tube under operating conditions
4．1．2 Fluid analysis in a three-tube
4．1．3 Fluid analysis in tubes
4．1．4 Conditions mode
4．1．5 Fluid analysis in five tubes
4．1．6 Summary of fluid analysis in tubes under various working conditions
4．2 Modal analysis
4．2．1 Modal analysis of service pipeline
4．2．2 Natural frequencies and modes of vibration far service pipeline
4．3 Harmonic response analysis
4．3．1 Response analysis setting
4．3．2 Comparison of displacement amplitudes
4．4 The inner tube gas tee acoustic analysis
CHAPTER Ⅴ MEASURES OF VIBRATION CONTROL FOR JYG GAS STATION PIPE
5．1 JYG pressure station pipeline vibration reduction measures
5．2 Simulation and validation of damping measures
5．2．1 Natural frequencies service pipeline after reinforcement
5．2．2 Response analysis of service line after reinforcement
CHAPTER Ⅵ CONCLUSION AND RECOMMENDATION
6．1 Conclusion
6．2 Recommendation
ACKNOWLEDGMENT
REFERENCES
西安石油大学;
