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High Reliability Pistons for Reciprocating Compressors with Validated Performance Modelling
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Piston ring leakage on reciprocating compressors is predictable due to defined leakage paths at the end gaps of piston rings. A new engineering approach quantifies the slippage and determines the dynamic pressure difference ...
Centrifugal Compressors 101
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
This course is aimed at engineers and technical professionals who need a broad-based introduction to centrifugal compressor design and analysis. This course starts with the basics and builds to provide a full understanding ...
API High Speed Balancing Acceptance Criteria and Pedestal Dynamics
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Acceptance criteria for high-speed balancing of turbomachinery are specified in API standards based on either pedestal velocity or shaft displacement. In addition to performing balancing, the measured displacements can ...
Case Study on investigation and resolution of Dry Gas Secondary Seal Failure
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Dry Gas (DGS) Secondary Seal installed on one of the Flash gas compressor unit at an onshore gas treatment facility failed resulting in equipment downtime and process gas flaring. During detailed tear down inspection, ...
Resolution of high vibration on a Generator
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
This is a synchronous generator driven by a GT through a speed reduction gearbox with a rated power of 25 MW(3600 rpm).
Generator bearing high vibration levels resulted in several machine trips during the startup attempt ...
Dry Gas Seal Failure due to Axial Sub-synchronous Vibration on a Hydrogen Recycle Gas Compressor.
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Approximately 6 months after commissioning a new hydrotreater hydrogen recycle gas compressor the site experienced a dry gas seal failure. The investigation revealed wear of the primary seal dynamic sealing element due to ...
Stray Currents and their Damaging Effects on Rotating Machinery
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Stray currents manifest in rotating machinery as a result of specific abnormalities in machines related to flux imbalance, residual magnetism, electrostatic build-up and induced voltages. Discharges of these voltages in ...
Compressor Dry Gas Seal Failure Due To Oil Ingress
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
This case study of a typical tandem arrangement dry gas seal failure during compressor start-up elaborates importance of start-up environment consideration during design for a compressor dry gas seal system. The seal failed ...
A Review of Aerodynamically Induced Forces Acting on Centrifugal Compressors, and Resulting Vibration Characteristics of Rotors
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
This tutorial reviews the various types of forces that can cause non-synchronous vibrations in centrifugal compressors. Many of these forces are aerodynamically-induced, such as impeller or diffuser stall or impeller / ...
Centrifugal Compressor Evolution
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
This tutorial addresses the advancements that have been made during the past 50 years in the design, analysis, and manufacturing methods for centrifugal compressors. The paper provides a historical perspective on these ...