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8177476 |
Method and apparatus for clearance control
A system, in certain embodiments, includes a magnetic actuator configured to adjust a radial clearance between a housing and rotary blades via translational movement along a rotational axis. The...
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8172529 |
Method of operation of a high-efficiency turbine with variable attack angle foils
Operations of a turbine to generate energy from a relatively slow fluid flow, such as wind and water, are described. The turbine has a plurality of foils rotating about a central axis at a...
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8109722 |
Turbine and system for generating power from fluid flow and method therefor
A turbine for use with a turbine generator, the turbine including at least one turbine blade for positioning in a flowpath, a hub mounting the at least one turbine blade, and a rotatable shaft in...
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8043045 |
Actuator
Actuators utilising shape memory alloy materials are known with regard to gas turbine engines. Such shape memory alloys have been used with respect to deformation provided in vanes and blades as...
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8043054 |
Method and system for monitoring wind turbine
A monitoring system for a wind turbine includes at least one acoustic sensor configured to measure an acoustic emission generated by at least one component of the wind turbine, and a control system...
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8021103 |
Pressure activated flow path seal for a steam turbine
A pressure activated flow path seal for a steam turbine is disclosed. In one embodiment a gap closure component is located about a rotary component and the stationary component of the steam...
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8007228 |
Wind guiding cover
A wind guiding cover, mounted on a fan, includes a rotating ring and a plurality of slats. The rotating ring is pivoted to the fan, and has an opening for an air flow generated by the fan to pass...
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7950901 |
System and method for loads reduction in a horizontal-axis wind turbine using upwind information
A system and method provide a proactive mechanism to control pitching of the blades of a wind turbine to compensate for rotor imbalance during normal operation by pitching the blades individually...
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7811048 |
Turbine-intake tower for wind energy conversion systems
A turbine-intake tower for delivering wind to a turbine has a hollow support column, an intake nozzle assembly rotatably coupled to the support column, and a tower nozzle disposed within the...
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7766601 |
Vertical-axis wind turbine
A vertical-axis wind turbine which has a central rotary tower upon which are fixed substantially vertical blades. The blades are capable of rotating and moving radially relative to the central...
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7686572 |
Pump comprising an axial balancing system
A pump for the drawing-in of a fluid, including at least one centrifugal wheel having a fluid inlet edge and a fluid outlet edge, the pump further including an axial balancing system with a...
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7422414 |
Inlet guide vane control device of gas turbine
An IGV opening command is set based on an IGV opening A set by an exhaust gas temperature control section, an IGV opening B set by a compressor surge protective control section, and an IGV opening...
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7393179 |
Variable position turbine nozzle
An apparatus and method are provided for permitting free rotation of turbine nozzle vanes, while minimizing or eliminating leakage on the vane side-walls. The device incorporates a plurality of...
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7326027 |
Devices and methods of operation thereof for providing stable flow for centrifugal compressors
Centrifugal compressor flow stabilizing devices and methods of operation thereof are disclosed that act upon the flow field discharging from the impeller of a centrifugal compressor and modify the...
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7280950 |
Locomotive diesel engine turbocharger and turbine stage constructed with turbine blade vibration suppression methodology
A method for fabrication of a locomotive diesel engine turbocharger turbine stage so as to avoid harmonic vibration in the turbine blades when the engine is operated at pre-selected throttle...
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7210895 |
Turbo compressor and method of operating the turbo compressor
A turbo-compressor being driven by an electric motor has an inlet guide vane and a blow-off valve. The surge limit line of the compressor is amended depending upon seasonal changes of temperature...
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7186071 |
Variable flow water pump
A variable flow water pump includes a housing having an impeller mounted on a rotatable shaft. The pump impeller has a plurality, of vanes fixed to a back plate or flange. A circumferentially...
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7111461 |
System and method for testing a rotary flow device
A diagnostic system and method for testing the operation of a rotary flow device, such as a turbine or compressor of a turbocharger with a variable-geometry mechanism, such as adjustable vanes, is...
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7004724 |
Method and apparatus for wind turbine rotor load control based on shaft radial displacement
Vertical and horizontal wind shears, yaw misalignment and/or turbulence act together to produce asymmetric loading across a wind turbine rotor. The resultant load produces bending moments in the...
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6793456 |
Turbo-compressor and capacity control method thereof
A turbo-compressor comprises a compressor main body for compressing an operation fluid, an inlet guide vane apparatus being provided on a suction side of the compressor main body and having guide...
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6755609 |
Radial pump
A radial-flow pump (1), and especially a coolant pump for an internal combustion engine, comprising an impeller (2) provided with vanes (5) and a directing device (4) including at least one...
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6341238 |
Robust engine variable vane monitor logic
A method of testing an actuation system for positioning an actuator, the actuation system including a primary electronic system, a secondary hydro-mechanical system is disclosed. The method...
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6220814 |
Turbine interstage sealing arrangement
A gas turbine sealing arrangement which includes a seal housing having at least one seal in close proximity to the turbine rotor. The seal housing is preheated prior to turbine start-up to...
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6155038 |
Method and apparatus for use in control and compensation of clearances in a gas turbine
A method and an apparatus for use with a gas turbine engine receive a signal indicative of an engine operating condition, generate signals representative of thermal conditions of a rotor, blades,...
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6146090 |
Cooling/heating augmentation during turbine startup/shutdown using a seal positioned by thermal response of turbine parts and consequent relative movement thereof
In a turbine rotor, a thermal mismatch between various component parts of the rotor occurs particularly during transient operations such as shutdown and startup. A thermal medium flows past and...
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6129511 |
Method and apparatus for controlling interaction between variable guide vanes and variable diffuser of a centrifugal compressor
A method and apparatus for controlling the amount of gas flow through a compressor having variable geometry guide vanes and a variable geometry diffuser. The geometry variation of the diffuser is...
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6036432 |
Method and apparatus for protecting centrifugal compressors from rotating stall vibrations
A fluid passage extends through the compressor casing from a point near the tip of the impeller to a transducer located externally of the compressor casing. Responsive to fluctuations of pressure...
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5984625 |
Actuator bandwidth and rate limit reduction for control of compressor rotating stall
A compressor is disclosed having a characteristic modifier, such as air injection, adapted to modify an operating characteristic of the compressor in order to reduce the bandwidth and rate limit...
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5938401 |
Automatic engine hydro-mechanical control unit preflight test
A method of testing an actuation system for positioning an inlet guide vane, the actuation system including a primary electronic system, a secondary hydro-mechanical system is disclosed. The method...
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5669756 |
Recirculating diffuser
A centrifugal compressor having an impeller wheel mounted for rotation about a central axis and a diffuser for emptying compressed fluid into a collector chamber. A plenum chamber is located behind...
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5340274 |
Integrated steam/air cooling system for gas turbines
A steam or air cooled combined cycle gas turbine includes first and second turbine stages and a second nozzle stage. During start-up, cooling air is supplied radially inwardly through the second...
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5284347 |
Gas bearing sealing means
A gas bearing face seal assembly for a gas turbine engine having improved sealing characteristics. The assembly can include support means which concentrically position a face seal member with...
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5267829 |
Flow control apparatus for a turbocharger turbine
In a flow control apparatus of an exhaust gas turbocharger turbine for an internal combustion engine including a rotor disposed in a turbine casing having a spiral guide channel arranged around the...
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5253976 |
Integrated steam and air cooling for combined cycle gas turbines
A steam or air-cooled combined cycle gas turbine includes first and second turbine stages and a second nozzle stage disposed about a spacer between the turbine stages. Cooling steam is passed...
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5235803 |
Auxiliary power unit for use in an aircraft
Inefficiencies in the operation of auxiliary power units producing electric and hydraulic power along with bleed air resulting from independence in the demand for power may be minimized in a system...
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5211530 |
Variable breadth impeller that provides a specific shutoff head
In accordance with the present invention, an improved variable breadth imler for use in a variable capacity centrifugal pump and a method for adapting a variable capacity centrifugal pump to...
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5169286 |
Variable capacity centrifugal water pump with movable pressure chamber formed by impeller
This invention relates to an improvement on a centrifugal pump including: a casing defining an inlet path extending at the axial portion thereof, a turbine chamber communicating with the inlet...
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5165844 |
On-line stall margin adjustment in a gas turbine engine
The deflection angle of a gas turbine stator is adjusted in proportion to the difference between two parameters computed from N2 and TT2 using the same function generator. One parameter is a...
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5165845 |
Controlling stall margin in a gas turbine engine during acceleration
Stall margin in a gas turbine compressor is controlled during acceleration by synthesizing the thermal enlargement of critical compressor stages to synthesize the temporary increase in blade-case...
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5146764 |
System and method for controlling a variable geometry diffuser to minimize noise
A method of controlling a centrifugal compressor having a variable width diffuser section, the compressor being part of a chiller having a condenser and an evaporator, the method including the...
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5101916 |
Water drill
A down-whole fluid drill assembly for boring holes in the earth, having a bit attached to a housing that is rotated by the passage of a fluid through the assembly. The drill assembly comprises at...
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5095714 |
Surging prediction device for a centrifugal compressor
A surging prediction device for a centrifugal compressor has a differential pressure detector and a controller. The detector detects a differential pressure between a hub side pressure in the...
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5054996 |
Thermal linear actuator for rotor air flow control in a gas turbine
A gas turbine rotor assembly includes axially spaced rotor discs carried on a shaft, together with first and second generally cylindrical actuators mounted at each of their opposite ends to the...
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4969798 |
Diffuser for a centrifugal compressor
In a diffuser for a centrifugal compressor of the type which includes an impeller rotatably provide on a downstream side of the suction casing and a plurality of radial stator blades arranged...
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4893984 |
Clearance control system
A system for controlling rotor blade tip clearances in a gas turbine engine supplies both heating air and cooling air to the rotor bore. The heating air flow is controlled by a valve and the...
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4893983 |
Clearance control system
A method and system for controlling rotor blade tip clearances in a gas turbine engine is disclosed. A flow of heat transfer fluid is supplied to the rotor. The temperature of the flow is...
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4859140 |
Centrifugal fan
A centrifugal fan in which the cone and wheel have a telescoping relationship to vary the rated capacity of the fan. The mechanism effects the relative movement manually, or by a servo arrangement...
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4828454 |
Variable capacity centrifugal pump
A variable capacity centrifugal pump capable of directly varying capacity, r output, in response to existing back pressure. The pump comprises a axially movable shroud having female grooves in...
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4828455 |
Temperature responsive blade shroud-disk for thermostatic water pump
A variable-capacity water pump includes a pump impelled fixed to a rotatable shaft for forcibly feeding cooling water from a cooling water passage, a mechanical seal disposed behind the pump...
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4780049 |
Compressor
A compressor with a rotary driven centrifugal impeller which receives inlet air from an inlet passageway and this discharges compressed air through a radially extending diffuser passageway....
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