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Now showing items 31-40 of 220
Subsynchronous Vibrations on a Vertical Electrical Motor During Factory Testing – Observed Phenomenon, Interpretation and Resolution
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
During the factory tests of a vertical electric driven de-ballasting pump, casing vibrations were observed on the motor above the contractual limit of 2.8 mm/s, mainly on the motor’s top, Non-Drive End. Supported by fluid ...
Rotordynamics, Design Aspects, Field and Operational Experiences of a Novel, Large Compressor String Supported by Active Magnetic Bearings
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
The giant Groningen onshore gas field in the Northeastern
Netherlands started production in 1963. About 35 years later,
the decreasing reservoir pressure required a first stage of compression
to provide sufficient capacity ...
A New Methodology for Verifying Pressurized Start-Up of Centrifugal Compressors Driven by Direct-On-Line Electric Motor by Leveraging String Test Results and Dynamic Simulation Analysis
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Fixed Speed Electric Motors driving Centrifugal Compressors are designed considering the pressurized start-up as the most critical
condition in terms of the torque requirement. Their capability is checked during the design ...
Plunger Pump Station Vibration-Induced Cracks in Piping
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Many plunger pumps are installed without adequate pulsation and vibration considerations at the design stage. Pressure
pulsations from normal pump operating can cause high shaking forces throughout the entire piping system. ...
NPSHR (NPSH3) IMPROVEMENT OF A LOW PRESSURE SAFETY INJECTION PUMP
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
This case study discusses the rerate of a set of vertically-mounted singlestage end-suction centrifugal pumps used for low pressure safety injection (LPSI) in a nuclear power plant. The original LPSI pumps were supplied ...
Flow Induced Vibration Problem During Full Load Testing Of A Multi-Stage Centrifugal Compressor
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
During FAT of a centrifugal compressor, non-synchronous vibrations were observed. The dominant frequencies are
different from both a) the rotor system natural frequency, and b) typical rotating stall frequency in parallel ...
On the Performance of Tilting Pad Bearings: A Novel Model for Lubricant Mixing at Oil Feed Ports with Improved Estimation of Pads’ Inlet Temperature and Its Validation Against Experimental Data
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Energy efficient operation of fluid film bearings demands savings in delivery flow while also managing to reduce fluid film and
pad temperatures. To achieve this goal, tilting pad journal bearings (TPJBs) implement a variety ...
Application of Dynamic pressure-balanced Seals in a Multi-stage Centrifugal Compressor
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Test results for an ASME Power Test Code 10 (PTC) Type 1 test of a 4,500 psia (310 Bara) discharge pressure gas lift centrifugal
compressor outfitted with dynamic pressure-balanced seals at the impeller eyes; shaft interstage ...
Development, Testing and Qualification of Innovative Low Viscosity Oil In Turbomachinery Applications
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
The continued market demand to have more efficient machines, thus achieving energy savings and emission reductions, has motivated manufacturers to look for improvements even in area that have never been explored and evaluated ...
Industrial IoT Brings Benefits and Opportunities for Rotating Equipment Suppliers and Plant Operators
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
The evolution of the Industrial Internet of Things
(Industrial IoT) and the increasing availability and
affordability of constituent technologies such as sensors,
gateways, networks, platforms, and analytics brings with ...