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Centrifugal Compressor Surge Control Systems - Fundamentals of a Good Design
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Lecture 2: Many facilities employ two or more centrifugal compressors, operated in either series or parallel configurations. An accurately designed surge control system that includes multiple compressors with the associated ...
Solutions To Requirements On Electrical Drives In O&G Applications
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Lecture 3: Variable-frequency drives (VFDs) are being increasingly employed in oil and gas (O&G) applications due to their better efficiency, reliability and process control when compared to conventional drives. In comparison ...
Operation of Centrifugal Compressors in Choke Conditions
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Lecture 14: Centrifugal compressors are at times required to operate in or near the choke region. Various limits of the degree of allowable operation in choke have been established. Based on test data and numerical data, ...
Mechanical Seals with DiamondFace Technology Used in Different Pipeline Services
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Technical Brief 2: Mechanical seals are used in a wide range of industrial applications, sealing gases in a compressor or sealing liquids in a pump. Reliability, longevity, emission control and safety are now more important ...
Control Systems. Transient Modeling and Analysis of Centrifugal Compressors
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Tutorial 10A: Centrifugal compressors are subject to transient events, such as emergency shutdowns, which can cause energetic surge events during rapid shutdown transients. Many modeling tools are used to predict the ...
Gas Turbine Packaging Options and Features
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Tutorial 13: This tutorial provides an overview of typical packaging options for gas turbines in industrial applications. Applicable standards are discussed. The requirements for different systems, such as air filtration, ...
Fundamentals of Fluid Film Journal Bearing Operation and Modeling
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Tutorial 14: Widely used in turbomachinery, the fluid film journal bearing is critical to a machine’s overall reliability level. Their design complexity and application severity continue to increase making it challenging ...
Investigation of process gass compressor shaft vibration phenomena
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
This paper presents details of investigation results of issues observed during plant start-up on a centrifugal compressor. Compressor was operated with air/ nitrogen during start-up and high shaft vibration (approx. 75 um) ...
Stress Corrosion Failure of a Low Pressure Disk from a 800MW Steam Turbine
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Case Study 1: Stress corrosion cracking is known to be a function of stress, material and environment. However, a fourth variable that is often overlooked is operating time. Maintaining steam chemistry within OEM and ...
Emergency Damage Restoration Experiences of 25MW Heavy-Duty Gas Turbine: Bearing Retrofit Design and Test Run
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Case Study 6: A 25MW gas turbine had been damaged during operation. Particularly, its tilting pad journal bearings and shaft journals had suffered complete wiping‐out and deep crack damages, respectively. For an emergency ...