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8167557 |
Gas turbine engine assemblies with vortex suppression and cooling film replenishment
A gas turbine engine assembly has combustion gases flowing through a gas flow path. The gas turbine engine assembly includes a stator assembly comprising a stator vane that extends into the gas...
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8161744 |
Internal combustion engine with turbocharger surge detection and control
An internal combustion engine includes a block defining a plurality of combustion cylinders, an intake manifold fluidly coupled with at least one combustion cylinder, and an exhaust manifold...
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8118536 |
Method and system for operating a wind turbine
A lubrication system for a wind turbine having a control system, the lubrication system including a sump configured to collect a lubrication fluid, and at least one heating unit configured to heat...
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8105028 |
Systems and methods for mitigating the effects of wind turbines on radar
A control system for mitigating the effects of a wind turbine on a radar system is disclosed. The control system includes a sensor configured to detect an operating condition of the radar system; a...
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8105015 |
Method for determining the total pressure distribution across a fan entry plane
A method for determining total pressure distribution across a fan entry plane of a fan situated within a fan casing provided with struts which are positioned upstream of the fan, with respect to...
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8075253 |
Gas turbine compressor
A gas turbine compressor presents a first fixed stage having a plurality of first adjustable vanes and a further fixed stage, which has an inner ring extending about a first axis; an outer ring...
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8057158 |
Oscillation damping of a wind turbine
The invention relates to a wind turbine and a method for operating the wind turbine planted in the floor of a body of water. The wind turbine includes a support structure and a rotor, which is...
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8038382 |
Methods and systems for controlling gas turbine clearance
Systems and methods for controlling the clearance in a gas turbine are provided. A temperature of a shaft of the gas turbine may be determined, and a desired temperature of an inner turbine shell...
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7984612 |
Exhaust-gas turbocharger for an internal combustion engine
In an exhaust-gas turbocharger for an internal combustion engine comprising an exhaust-gas turbine arranged in an exhaust strand of the internal combustion engine and a compressor arranged in an...
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7871237 |
Method and apparatus for monitoring particles in a gas turbine working fluid
A method and system for monitoring a gas turbine engine (20) to predict maintenance requirements. Particles suspended in a gas flow (24, 32) of the engine (20) are monitored and quantified to...
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7869978 |
Determination and control of wellbore fluid level, output flow, and desired pump operating speed, using a control system for a centrifugal pump disposed within the wellbore
A method and apparatus for determining a fluid level and/or output flow during operation of a centrifugal pump, are provided, which may be used for production of gas and/or oil from a well, and...
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7837429 |
Predictive model based control system for heavy duty gas turbines
A system for controlling the clearance between a turbine blade and the turbine casing that includes an impingement cooling manifold attached to a turbine casing, a temperature sensing device for...
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7827803 |
Method and apparatus for an aerodynamic stability management system
A method for using an aerodynamic stability management system is disclosed. The method includes placing at least one pressure sensor in a compressor, the at least one pressure sensor communicating...
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7801660 |
Methods and systems for estimating compressor fouling impact to combined cycle power plants
A system and method for estimating the impact of compressor fouling in a combined cycle power block. The current performance of the combined cycle power block is determined and normalized to one or...
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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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7556473 |
Control unit for compressor
The present invention includes an inflow quantity regulating means 5 for regulating the inflow quantity of a fuel gas to a compressor 1; a recycle valve 7 for returning the fuel gas discharged from...
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7487029 |
Method of monitoring gas turbine engine operation
A system, method and apparatus for monitoring the performance of a gas turbine engine. A counter value Indicative of the comparison between the engine condition and the threshold condition is...
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7472541 |
Compressor control unit and gas turbine power plant including this unit
Provided is a compressor control unit with a high response ability to changes of gas condition of a compressor (compressor suction temperature, pressure, gas specific gravity, pressure ratio of...
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7470103 |
Method for determining limit exceedance
A method and system for determining a limit exceedance of an operating parameter in a steam turbine system. Measurement data associated with the operating parameter is received, and a limit...
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7392713 |
Monitoring system for turbomachinery
A sensing system for monitoring a property of an electrically conductive moving element of turbomachinery. The sensing system includes a sensing system housing. A magnetic core is contained within...
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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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7293954 |
Centrifugal compressor for turbo chiller, turbo chiller, and control method therefor
A turbo chiller that can accurately determine the existence of surging occurring in a centrifugal compressor is provided. In a centrifugal compressor of a turbo chiller, which includes an impeller...
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7254948 |
Boost wastegate device for EGR assist
An apparatus and method for controlling exhaust gas recirculation flow. The apparatus and method uses a pressure-bleeding device, such as a wastegate valve, to change the pressure in an internal...
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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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7137407 |
Trip manifold
A trip manifold assembly is disclosed which includes a manifold body connected to a header shaft. The header shaft passes through a plurality of rotary valves. Each rotary valve is connected to a...
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7112037 |
Centrifugal pump performance degradation detection
A system for determining whether a centrifugal pump assembly is degraded as operating outside of acceptable operating limits and includes a processor adapted by software to perform the steps of...
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7108477 |
Warning before pump limit or in case of blade failure on a turbomachine
In a method for determination of a surge limit warning (W) for a turbocompressor, or a warning of blade damage, at least two measurement signals (p1, p2; {tilde over (p)}1, {tilde over (p)}2), are...
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7094019 |
System and method of surge limit control for turbo compressors
A system and method of surge limit control for turbo compressors including a turbo compressor having an inlet and an outlet, an anti-surge valve, a variable speed drive to operate the compressor, a...
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7083378 |
Wind generator
The present invention relates to a wind generator. The wind generator comprises a body installed freely rotatably at a tower, blades installed at a leading end of the body, a gearbox for receiving...
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7059820 |
Noise control
Methods, devices, and/or systems for controlling vibration and/or acoustic noise. An exemplary method senses noise and/or, for example, rotational speed of a rotating shaft, determines control...
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7025558 |
Process for the reliable operation of turbocompressors with surge limit control and surge limit control valve
A process for the reliable operation of turbocompressors with a surge limit control and a surge limit control valve is described, in which the compressor delivers gases with different compositions...
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7008184 |
Control for cooling fan
A control for changing direction of air flow through a cooling core in response to an external signal and a purge signal includes a logic circuit and a relay assembly. The logic circuit generates a...
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6981838 |
Method and apparatus for detecting the occurrence of surge in a centrifugal compressor
A method and apparatus for detecting the occurrence of surge or incipient surge in a centrifugal compressor is supplied. The centrifugal compressor has an inlet passage, an inlet passage wall and...
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6939100 |
Method and apparatus for controlling steam turbine inlet flow to limit shell and rotor thermal stress
In a method of controlling steam flow through a steam turbine having a turbine rotor, a maximum heat transfer rate is determined based on thermal stress calculations in the turbine rotor. A maximum...
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6918739 |
Seal support
A turbine engine has a rotor shaft rotatably carried within a non-rotating support structure. A seal is carried by the support structure circumscribing the shaft and having a flexible sealing...
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6918307 |
Device, system and method for on-line monitoring of flow quantities
Measures of a torque and rotational speed of a pump or fan are obtained, from which a mechanical input power can be calculated. By further using predetermined relations between mechanical input...
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6860712 |
Control strategy for gas turbine engine
A control strategy for a gas turbine engine which exchanges future lifetime of the engine for present thrust. Gas turbine engines, such as those used in aircraft, sometimes incur damage, as when...
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6837681 |
Wind power plant with a particle sensor
Wind power installations using more modern technology have long been known. Such wind power installations have rotors comprising at least one or more rotor blades. The rotors and accordingly the...
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6776584 |
Method for determining a centrifugal pump operating state without using traditional measurement sensors
A method for determining whether a centrifugal pump is operating within its normal flow operating range includes the steps: of determining a motor torque/TDH relationship over a range of speeds for...
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6767178 |
Response time of a steam turbine speed-control system
Steam turbine speed-control systems often incorporate pilot valves for controlling the position of hydraulic actuators for steam valves. Operational efficiency of these pilot valves can suffer from...
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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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6558113 |
Process and device for regulating a turbocompressor to prevent surge
To prevent surge of a turbocompressor (K), a anti-surge valve (27) provided at the compressor outlet is controlled by a controller (R). The input signal for the controller (R) is generated as a...
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6551068 |
Process for protecting a turbocompressor from operating in the unstable working range
To protect a turbocompressor (3) with a downstream process from operation in the unstable working range, a machine controller is used, which optionally contains—besides a surge limit controller (...
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6533536 |
Hydro-turbine runner
A turbine installation comprising a turbine in combination with an electrical closed-loop control system. The turbine is disposed in a flow of water for producing electrical energy. The turbine...
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6506010 |
Method and apparatus for compressor control and operation in industrial gas turbines using stall precursors
An apparatus for monitoring the health of a compressor including at least one sensor operatively coupled to measure the dynamic pressure of gases flowing through the compressor, a processing system...
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6503048 |
Method and apparatus for estimating flow in compressors with sidestreams
Accurate and effective antisurge control for turbocompressor stages is augmented by measuring the flow rate of fluid entering or leaving the stage of compression. On the other hand,...
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6494672 |
Method and apparatus for antisurge control of turbocompressors having complex and changing surge limit lines
Compensating for the complex changing shape and location of a turbocompressor's surge limit line can be difficult and imprecise when using antisurge controllers that do not incorporate sufficient...
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6457313 |
Pressure and flow rate control apparatus and plant system using the same
A pressure and flow control apparatus includes first to third pipes, fluid being supplied to the first pipe and outputted from the third pipe, a pressure control valve, a control valve, and a...
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6402477 |
Adjustable blade turbines
A turbine, adaptable to improve the survivability of fish present in water flowing therethrough, includes a hub and associated runner blades. Each blade comprises an inner edge and a distal outer...
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6364602 |
Method of air-flow measurement and active operating limit line management for compressor surge avoidance
A transfer function between the inlet air-flow consumed by a Gas Turbine engine, and the engine parameters of speed, pressure ratio, and Inlet Guide Vane (IGV) angle is described. An active...
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