Now showing items 174-180 of 180

    • Unexpected Vibrations in Gearbox Caused by System Integration Issues 

      Boccadamo, Gianluca; Maragioglio, Gaspare (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      This case study deals with a 24MW turbo-compressor unit composed of a gas turbine, a speed reduction gearbox with a lube oil pump mounted on its low speed shaft and two compressors in series. The unit was subject to high ...
    • Unsteady Vibration Due to Cavitation in Mixed Flow Pumps 

      Nakano, Takuya (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      In regarding to the large vertical mixed flow pump for seawater supply pump, the authors experienced the strange excessive vibration: the vibration level intermittently changed and the peak frequency was the blade passing ...
    • Using Digital Models for Condition Based Maintenance of High Pressure Pumps in SWRO Desalination Plants 

      Abdel Fatah, Amr; Lofty, Mohamed; Hassan, Mohammed; Dimitri, Antoine (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Condition based maintenance (CBM) is a very useful technique built around the concept of monitoring the operation of assets. This allows performing diagnostics, troubleshooting and determining the proper maintenance ...
    • Using Non-Standard Materials for Couplings on Special Turbomachinery Applications 

      Xu, Jack (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
      Technical Brief 3: Flexible couplings are a critical component in turbo-machinery train. It is a challenge and very important for coupling designers to select suitable materials for special turbo-machinery applications. ...
    • Vibration Analysis of Gas Turbine’s Transportation Carrigage and Warranty Issues 

      de Guarda Matos, Danilo; Silva de Matos, Wiriton (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      This paper describes the investigation of whether the vibration shock limits were exceeded on the transportation of 2 gas turbines. This investigation was requested due to an improper suspension type of the carriage used ...
    • Vibration Field Problem Resolved with Analytical Diagnostic Approach and Innovative Impeller Design 

      Schiavello, Bruno; Cicatelli, Giancarlo (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
      Case Study 20: Several pumps of same design exhibited field vibrations above API limits, dominated by Vane Passage Frequency (VPF). Root cause analysis included both experimental and theoretical paths. Experimental ...
    • Zero Leakage Compressor Seals 

      Watanabe, Takuya (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Dry gas seal is applied to refrigeration compressor. Some of configurations for dry gas seal system are shown in API 617 and 614, however those systems are designed with condition that leak gas from dry gas seal is released ...