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THE USE OF ACOUSTIC COMB FILTERS TO AVOID CENTRIFUGAL COMPRESSOR DISCHARGE BLADE-PASS PULSATION INDUCED PIPING VIBRATIONS
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
Centrifugal compressor blade-pass interaction periodic pulsation can cause acoustic resonance conditions and pipe vibrations in the suction and discharge lines of the compressor. A series of two or more progressively placed ...
ACCELERATED TEST VALIDATION USING PRINTED POLYMER COMPONENTS
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
This paper describes efforts undertaken to increase the use of non-metallic components in research and development as well as component/stage validation testing. The switch to non-metallic or polymer components was driven ...
Overcoming Failure of Synchronous Motor Driven Compressor Train by Application of Controlled Slip Clutch
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
This case study describes failure incident of a centrifugal compressor, its root cause investigation, and countermeasure implementation. An integrally geared centrifugal air compressor driven by a synchronous motor failed ...
DEVELOPMENT OF ROTOR CONTACT DETECTING SYSTEM FOR DRY SCREW COMPRESSOR
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
DRY screw compressors have the characteristics of a positive displacement typerotary compressor, are used in a wide range of applications. DRY screw compressors are often treated as one of the important equipment inplants. ...
Case Study: Lateral Analysis Fixes a Multi-Stage Diffuser Boiler Feedwater Pump
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
History gets confusing. A lot of emails, vibration reports, and attempted fixes over the years. Customer spent 3 years working closely with OEM, Pump was shipped back to OEM for additional testing. OEM design suggestions ...
Detection of Misalignment from Vibration Data
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
On a boiler feed pump driven by a motor running close to 3600 rpm, a horizontal misalignment issue was suspected by examining orbit plots besides shaft centerline plots. The follow-up inspection did uncover large parallel ...
Modernization of 75 year old Turbo Generator Emergency Trip System
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
This case study presents lessons learned during the retrofit of two 75-year old Turbo Generator (TG) overspeed trip systems to meet the latest edition of API 612. The effort was initiated due to reliability issues with the ...
An End-User’s Guide to Centrifugal Pump Rotordynamics
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
This tutorial discusses concepts and methods involved in performing and evaluating centrifugal pump rotordynamic analysis. The presentation includes Lomakin Effect, Gyroscopic Effect, Cross-Coupling, Rotordynamic Stability, ...
How to Specify, Design, and Install Canned Motor Pumps in a Refinery
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
This tutorial will guide the end user through the process of specifying and installing canned motor pumps in refinery services. Specific examples will be shown of both successes and failures and lessons learned will be discussed.
INFLUENCE OF THE SHAPE OF THE IMPELLER BLADE TRAILING EDGE ON SINGLE AND TWO-PHASE AIRWATER FLOWS IN A CENTRIFUGAL PUMP
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
In this study, the performance of a radial-type centrifugal pump was investigated for different single and two-phase flow conditions to evaluate the influence of the shape of the impeller blade trailing edge. For that ...