Patent
Method and apparatus to achieve passive damping of flow disturbances in a centrifugal compressor to control compressor surge
TLDR
In this article, a check valve is connected with the discharge for preventing high pressure fluid from back flowing to the compressor, and a vane diffuser assembly fluidly communicates with the impeller.Abstract:
An apparatus achieves passive damping of flow disturbances to control centrifugal compressor surge. The apparatus includes a centrifugal compressor for compressing a low pressure fluid. The centrifugal compressor has an impeller, an inlet which communicates with an atmosphere and a discharge through which compressed air is supplied to a compressed air system. A fluid flow control is flow connected with the inlet for controlling the flow of a low pressure fluid to the compressor. A check valve is flow connected with the discharge for preventing high pressure fluid from back flowing to the compressor. A vane diffuser assembly fluidly communicates with the impeller. A spring-mass-damper system is coupled to any one or all of the fluid flow control, check valve or vane diffuser to dampen low amplitude flow disturbances of the compressible fluid.read more
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Patent
Devices and methods of operation thereof for providing stable flow for centrifugal compressors
TL;DR: In this paper, the authors describe a flow stabilizing device that acts upon the flow field discharging from the impeller of a centrifugal compressor and modify the field ahead of the diffuser vanes such that flow conditions contributing to rotating stall and surge are reduced or even eliminated.
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TL;DR: In this article, a system and methods for detecting temperature excursion in a chemical plant or petrochemical plant or refinery are described, which can provide early warnings of impending undesirable events, directly or indirectly manipulate certain process variables to reduce undesirable outcomes, and/or directly and indirectly place a reactor unit in a "safe park" state.
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Reactor loop fouling monitor for rotating equipment in a petrochemical plant or refinery
TL;DR: A plant or refinery may include equipment such as condensers, regenerators, distillation columns, rotating equipment, compressors, pumps, turbines, or the like as discussed by the authors.
References
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Patent
Axial flow fan
Ahmad Alizadeh,Mustapha Belhabib +1 more
TL;DR: In a preferred embodiment, the trailing edge of the blade tip and the median point of a blade root are situated on a common radial line as discussed by the authors, and a median point on the tip chord is disposed angularly ahead of a median points of the root chord.
Journal ArticleDOI
Active Stabilization of Centrifugal Compressor Surge
TL;DR: In this article, a servo-actuated plenum exit throttle controller was used to suppress the surge point mass flow in a centrifugal compressor with a plenum pressure regulator.
Patent
Fan case liner for a gas turbine engine with improved foreign body impact resistance
TL;DR: In this article, the first honeycombed layer of an aluminum or an aluminum alloy is disposed over and attached to the face sheet of a gas turbine engine, and a backsheet may be disposed over the backsheet to further improve resistance to damage or denting.
Journal ArticleDOI
Dynamic Control of Centrifugal Compressor Surge Using Tailored Structures
TL;DR: In this article, a new method for dynamic control of centrifugal compressor surge is presented, where one wall of a downstream volume or plenum is constructed so as to move in response to small perturbations in pressure, thus extending the stable operating range of the compression system.
Patent
Gas turbine outlet guide vane mounting assembly
TL;DR: In this paper, a wedge-shaped booted section was used to provide a dovetail joint with the elastomer material boot compressed between the wedge section of the vane and the slot walls as a vibration damping medium and vane retention means.