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| Number | Title | Issue Date |
| 7585147 | Pressurizing centrifugal pump A pressurizing centrifugal pump has a blade, which protrudes backwardly inclined in a radial direction from a blade plate and a boss portion and is provided with a blade forward inclination angle and a blade outer forward inclination angle. Thereby, the blade takes ... | 09/08/2009 |
| 7322788 | Protection system for turbo machine and power generating equipment A limit switch 6 is placed on an end portion of the trip rod 4, which converts the mechanical deviation of the trip rod 4 into an electrical signal. The electrical signal from the limit switch 6 is transmitted to quick acting solenoid val... | 01/29/2008 |
| 7121786 | Mix-in structure for gas or the like in pressurization centrifugal pump A mix-in structure for a gas or the like in a pressurization centrifugal pump, capable of mix-discharging liquid and gas or the like to prevent cavitation and of suppressing gas residence in the pump chamber at the time of operation stoppage or the like. It comprise... | 10/17/2006 |
| 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 provided. The system includes a flow generator configured to provide ... | 09/26/2006 |
| 6883316 | Control system for a turbo-charged diesel aircraft engine In the control system for a turbo-charged diesel aircraft engine, a target value for a fuel injection amount is determined by the stroke of a throttle lever. A boost compensator determines the maximum limit for the fuel injection amount in accordance with the boost ... | 04/26/2005 |
| 6773224 | Control method of plural compressors and compressor system In a compressor system, in which plural numbers of compressors are connected in parallel with, wherein flow rate of all the compressor main bodies driven under load operating condition is decreased down by closing each of the inlet guide vanes thereof, when a load o... | 08/10/2004 |
| 6769449 | Water booster methods and apparatus Water is first caused to flow through a first passage and rotate a first impeller. Rotation of the first impeller is linked to rotation of a second impeller, which is in fluid communication with a second, discrete passage. Vanes on the second impeller are constraine... | 08/03/2004 |
| 6443690 | Steam cooling system for balance piston of a steam turbine and associated methods A steam cooling system (30) and associated methods are provided which have a first high pressure (HP) steam turbine (12) having a straight through configuration, a second intermediate pressure (IP) steam turbine (16) having a straight through configuratio... | 09/03/2002 |
| 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 compressor Operating Limit Line (OLL) management strategy that le... | 04/02/2002 |
| 6238178 | Water booster methods and apparatus Water is first caused to flow through a first passage and rotate a first impeller. Rotation of the first impeller is linked to rotation of a second impeller, which is in fluid communication with a second, discrete passage. Vanes on the second impeller are... | 05/29/2001 |
| 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 sensed by the transducer indicative of rotating stall, the ... | 03/14/2000 |
| 5967742 | Method and apparatus for preventing surge while taking a turbocompressor off-line from a parallel configuration The operation of quickly taking a turbocompressor off-line from a parallel configuration, of a gas pipeline compressor station, may encounter increased mechanical action (in particular, vibration) upon recycle piping and the additional risk of compressor ... | 10/19/1999 |
| 5769602 | Active automatic clamping control An automatic control of clamping forces in primary nozzle systems of radial turbines. Pressure to an closed annular volume positioned between a turbine housing and an axially adjustable mounting ring is varied to regulate the clamping forces against inlet... | 06/23/1998 |
| 5630698 | Converter for providing a liquid at a measurement pressure corresponding to a rotational speed A converter assembly for providing a liquid in a measuring line includes a stationary housing and a component being rigidly connected to the housing. A journal is slidingly supported in the stationary housing and defines a gap disposed between the compone... | 05/20/1997 |
| 5564895 | Active automatic clamping control An automatic control of clamping forces in primary nozzle systems of radial turbines. Pressure to an closed annular volume positioned between a turbine housing and an axially adjustable mounting ring is varied to regulate the clamping forces against inlet... | 10/15/1996 |
| 5333989 | Electric actuators for steam turbine valves Linear electric actuators powered by DC brushless servomotors are individually controlled to position steam turbine valves by way of levers, pins and links to thus eliminate hydraulics and the attendant disadvantages of fluid filtering, conditioning and l... | 08/02/1994 |
| 5292225 | Overspeed protection apparatus for a turbomachine An overspeed trip system for a steam turbine. A pressure switch is installed at the discharge of an oil pump that is driven by the rotor shaft and that rotates at the same speed as the rotor. The discharge pressure of the oil pump is proportional to the r... | 03/08/1994 |
| 4874288 | Inlet guide vane assembly An inlet guide vane assembly for a pump or a compressor having rotary blades. The guide vanes pivot in a controlled manner so that a portion of the vanes can be inserted into or withdrawn from the inlet passageway of the pump or the compressor by pivoting... | 10/17/1989 |
| 4770602 | Method of capacity controlling of multistage compressor and apparatus therefor The invention relates to a capacity control method for controlling the capacity of a multistage compressor in response to a flow rate signal by varying the openings of vanes at individual stages. The relationships of the openings of the vanes of the indiv... | 09/13/1988 |
| 4764088 | Inlet guide vane assembly An inlet guide vane assembly for a pump or a compressor having rotary blades. The guide vanes are pivotably disposed so that a portion of the vanes can be inserted into or withdrawn from the inlet passageway of the pump or the compressor by pivoting the g... | 08/16/1988 |
| 4640664 | Methods of controlling operation of multistage hydraulic machines A multistage hydraulic machine in which respective pressure stages are connected in series through return passages and the highest and lowest pressure stages of the hydraulic machine are provided with movable guide vanes the degrees of openings of which a... | 02/03/1987 |
| 4617799 | Plural turbine inlet passage turbo-supercharger with inlet passage shut-off valve A turbo-supercharger for an engine includes a turbine casing having a turbine scroll divided into a first and second inlet passages. The inlet passages are opened to the engine exhaust passage through first and second inlet ports formed in a mating surfac... | 10/21/1986 |
| 4578017 | Method for stopping a multi-stage hydraulic machine A method for stopping a multi-stage hydraulic machine with an inlet valve, guide vanes including highest and lowest stage guide vanes, and a return passage connected between flow passages of respective stages, wherein the machine is in turbine operation, ... | 03/25/1986 |
| 4502831 | Method of controlling operation of multistage hydraulic machines A multistage hydraulic machine in which respective pressure stages are connected in series through return passages and the highest and lowest pressure stages are provided with movable guide vanes the degrees of openings of which are variable is controlled... | 03/05/1985 |
| 4475334 | Method of and system for controlling hydraulic turbine A method of and system for controlling a hydraulic turbine including a variable throttle valve located in fluid channel upstream or downstream of the hydraulic turbine adapted to be closed simultaneously as guide vanes of the hydraulic turbine are closed ... | 10/09/1984 |
| 4472103 | Multistage hydraulic machines and methods of controlling operations thereof A multistage hydraulic machine such as a pump/turbine having at least three pressure stages in which the highest and lowest pressure stages are provided with movable guide vanes the degree of opening of which are variable, and the other intermediate press... | 09/18/1984 |
| 4396345 | Unloader valve having bypass valving means The invention comprises incorporating in the wall of a typical unloader valve for a compressor, a normally-closed, pressure-responsive valve for admitting product compressed air therethrough, into the valve chamber, for re-circulation of the admitted air ... | 08/02/1983 |
| 4229139 | Water powered high speed motor The water powered motor includes a casing housing a rotor shaft. First and second water bearings of conical shape support opposite end portions of the shaft for high speed rotation. The central portion of the shaft has turbine wheels subject to high veloc... | 10/21/1980 |
| 4168935 | Apparatus and method for controlling water turbine An apparatus for controlling a water turbine is disclosed wherein an auxiliary servomotor having a capacity substantially equal to that of a servomotor for actuating pressure regulator is provided for actuating flow control guide vanes, the auxiliary serv... | 09/25/1979 |
| 4155679 | Irrigation systems control An irrigation control system includes a rotary water motor operatively associated with valves to provide that the water motor is either in the full on or full off condition, dependent upon alignment of the irrigation line. The irrigation control system al... | 05/22/1979 |
| 4102595 | Bleed valve control system The opening of variable bleed doors is scheduled as a function of both booster and compressor speed so as to better maintain the desired booster stall margin and increase efficiency during certain periods of engine operation. The schedule based on core sp... | 07/25/1978 |
| 3977809 | Controlled discharge pressure pump for pumping liquids A variable liquid discharge flow rate pump with a discharge float valve the opening of which is controlled according to the discharge pressure and flow rate by a hydraulic power ram actuator with a resiliently biased piston slidable in a cylinder communic... | 08/31/1976 |
