Browsing State Agencies by Title
Now showing items 13186-13205 of 17199
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(Texas A&M University. Gas Turbine Laboratories, 1972)A study is presented of a simple shaft configuration. This study shows the relative effect of variables of weight distribution and support stiffness on the response of the rotor. In particular, these variables are related ...
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(Texas A&M University. Turbomachinery Laboratories, 1982)This paper presents the highlights of a complete rotor dynamics analysis and bearing optimization study that was performed on a 3800 HP multistage steam turbine. This unit is coupled to a three stage, poster-type, centrifugal ...
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(Texas A&M University. Turbomachinery Laboratories, 1983)The catastrophic failure of a high pressure centrifugal air compressor utilizing air-pressurized bearing housings dictated the redesign of its sister compressor. The modification of this early 1950's compressor involved ...
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(Texas A&M University. Turbomachinery Laboratories, 2001)The appearance of a strong subsynchronous instability in an overhung compressor highlights the fact that rotordynamic instabilities are not restricted to high-pressure multistage between bearing compressors with overhung ...
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(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)A magnetized rotating machine behaves like an electrical generator. It often produces localized stray current that usually discharges across small clearance paths imposing damage to machine internals and vibration probes. ...
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(Turbomachinery Laboratory, Texas A&M University, 2011)
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(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)This tutorial focuses on the rotordynamic characteristics of integrally geared compressors and expanders. Although the focus is for turbomachinery the topics discussed also apply to industrial gearing. The topics covered ...
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(Texas A&M University. Gas Turbine Laboratories, 1972)This paper presents a survey of the various mechanisms that can cause instability in rotor bearing systems. The occurrence of self-excited instability is of particular importance to the manufacturers and users of modern ...
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(Texas A&M University. Gas Turbine Laboratories, 1975)This paper concentrates on one aspect of the design audit of rotating machinery – review of the rotor-bearing system dynamics. A systematic approach for performing this audit is presented. This approach is one which has ...
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(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1990)Excessive rotor vibrations are one of the leading causes of damage to pump components, particularly to bearings, shaft seals, and premature wear of labyrinth surfaces. Under an EPRI contract which was awarded to Sulzer in ...
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(Texas A&M University. Turbomachinery Laboratories, 1991)Mopico is an oilfree motor pipeline compressor of fully integrated design with no sealing requirements against atmospheric pressure and supported on magnetic bearings. The application of magnetic bearings for this machine ...
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(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1988)Operating speeds of multistage pumps tended to increase during the last decade from 4000 to 6000 rpm to 7000 to 10000 rpm, due to new super critical powerplant designs and new conversion processes in the hydrocarbon industry. ...
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(Texas A&M University. Turbomachinery Laboratories, 2008)Active magnetic bearings (AMBs) are a mature bearing technology that is being applied to many new turbomachines. They have become the bearing of choice for most new turboexpander applications. They are seen as a key enabling ...
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(Texas A&M University. Turbomachinery Laboratories, 2005)The American Petroleum Institute (API) has recently implemented new rotordynamic stability specifications for centrifugal compressors. The specifications consist of a Level I analysis that approximates the destabilizing ...
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(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1986)At present, the majority factor limiting the designer’s ability to predict the rotordynamic behavior of multistage centrifugal pumps is the availability of accurate input data for the forces acting on the rotor. Recent ...
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(Texas A&M University. Turbomachinery Laboratories, 2001)This paper presents the rotordynamic characteristics of a vertical submerged hydraulic turbine generator obtained during design, manufacturing, shop testing, and site testing. The hydraulic turbine represents a new design ...
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(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2020)Balance piston seals restrict leakage at the discharge side of single shaft centrifugal compressors. There are multiple types of annular seals including labyrinth seals, textured surface seals such as honeycomb seals and ...
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(Texas A&M University. Turbomachinery Laboratories, 1985)Straightforward mechanics are used to give a physical understanding of the important parameters involved in rotor dynamic instability. A concise analysis procedure is proposed for assembling available information into a ...
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(Texas A&M University. Turbomachinery Laboratories, 2002)Full-load, full-pressure rotordynamic stability measurements were conducted on a seven-stage, back-to-back centrifugal compressor. To validate rotordynamic predictions, the rotor was excited while operating at full load ...
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(Texas A&M University. Turbomachinery Laboratories, 2009)Extensive stability measurements were performed during the full-load, full-pressure factory testing of a five-stage inline centrifugal compressor. The compressor, tested up to a maximum discharge pressure of 655 bar (9,500 ...