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Stall, Stage Stall, and Surge
(Texas A&M University. Turbomachinery Laboratories, 1981)
An extensive introduction to stall, stage stall and surge is given with examples of the various stall phenomena including recirculation. Particular components including the inducer, impeller, vaneless diffuser, channel ...
Field Testing Of Centrifugal Compressors
(Texas A&M University. Turbomachinery Laboratories, 1981)
Field testing of compressors may be carried out to monitor for performance shortfall in normal operation or to verify performance following an overhaul or revamp. Testing requires careful measurements of pressures, ...
A Practical Guide To In-Place Balancing
(Texas A&M University. Turbomachinery Laboratories, 1981)
Rotor unbalance remains one of the leading causes of deterioration and vibration of rotating machinery; but, if physical weight corrections can be made, many machines can be successfully balanced in-place with considerable ...
Flow Recirculation In Centrifugal Pumps
(Texas A&M University. Turbomachinery Laboratories, 1981)
Recirculation in centrifugal pumps is a flow reversal at the inlet or at the discharge tips of the impeller vanes. Through analysis and tests, it is now possible to determine the flow patterns that must exist to produce ...
Compressor Field Performance Evaluation Techniques
(Texas A&M University. Turbomachinery Laboratories, 1981)
During the course of this presentation on field performance evaluation techniques, a variety of turbomachinery field performance situations will be explored. For these tests, suggested ideas and guidelines for their ...
Electromagnetic Shaft Current Control
(Texas A&M University. Turbomachinery Laboratories, 1981)
Four Compressor Trains Of A Large Ethylene Plant-Design, Audit, Testing And Commissioning
(Texas A&M University. Turbomachinery Laboratories, 1981)
Each new project that a company initiates should allow the mechanical developments up to that time to be applied at the proper point when the design premise is established. This paper will review what is considered a ...
Field Experience And Solution Of A Fractional Frequency Vibration Problem On A High Speed Centrifugal Compressor
(Texas A&M University. Turbomachinery Laboratories, 1981)
This paper describes how a serious field vibration problem on a high speed centrifugal compressor using tilting pad bearings was identified, following the introduction in the plant of simple methods of vibration recording ...
How To Install Maintainable Bearing Temperature Sensors
(Texas A&M University. Turbomachinery Laboratories, 1981)
This paper covers techniques for retrofitting turbomachinery to accept "stab-in" type thermocouples for bearing temperature monitoring. The objectives of bearing temperature monitoring and shutdown systems are to (1) avoid ...
Some Aspects Of Field Performance Testing
(Texas A&M University. Turbomachinery Laboratories, 1981)
The incentives are well recognized for conducting field performance tests on centrifugal compressors in petrochemical service. From the maintenance standpoint, stage-by-stage changes in thermodynamic performance are valuable ...