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Patent Searching and Data


Matches 401 - 450 out of 6,982

Document Document Title
WO/2007/024475A1
A submersible pump includes a pump housing forming a main compartment for receiving a pump impeller and having liquid entrance and exit openings. A sealed auxiliary compartment is formed as an integral part of the housing. A drive motor ...  
WO/2007/019496A1
A fluid pump (10) includes a pumping chamber (14), an inlet (16) and an outlet (18) fluidly connected with the pumping chamber, and a passage (24) fluidly connected between the inlet and the outlet. Fluid flowing through the passage bypa...  
WO/2007/018044A1
A method and a device for estimating the flow rate and head of centrifugal pumps (10), (30), (60), (70), and (80) in which impellers (14) are rotated based on lateral forces applied to the impellers (14) while the impellers (14) are rota...  
WO/2007/004943A1
The invention relates to a pump for pumping contaminated liquid including solid matter, comprising a pump housing provided with a rotatable impeller (1) suspended in a drive shaft (3) and having at least one vane (5) , and an impeller se...  
WO/2006/137765A1
The present invention relates to an adjustment device for adjusting the pitch angle of the propeller blades (4) of a propeller pump (1) and a propeller pump incorporating such a device. The adjustment device comprises adjustment means (5...  
WO/2006/137777A1
The present invention relates to pumps comprising variable frequency drive means and methods for operating such pumps. The inventive method for operating a pump (1) comprises the steps of, obtaining values of operating parameters of the ...  
WO/2006/136202A1
The present invention relates to variable frequency drive pumps and methods for operating such pumps. The inventive method for operating a pump (1) having an inlet and an outlet, which pump (1) comprises variable frequency drive means (2...  
WO/2006/132541A1
The present invention relates to a subsea compression system for well fluid boosting by compressing hydrocarbon gases and pumping hydrocarbon liquids where said system comprises one or more subsea compression stations and one or more lon...  
WO/2006/129192A1
An impeller for centrifugal pumps with permanent-magnet synchronous motor, comprising a main blade array (4a-4c) and an additional blade array (6a-6c) of moving blades; in the nominal direction of rotation the moving blades are resting o...  
WO/2006/119951A1
A system for controlling the rate of a pump (2) on a water drainage outlet (3) of a water dispensing unit. The system comprises means for measuring the water inlet flow rate of an inlet water supply to the water dispensing unit and means...  
WO/2006/120369A1
A control device (10) for controlling a shower waste pump, comprises a housing (12) which is mountable to a supporting surface, pump setting means (14) located in and/or on the housing (12), and over-run setting means (16) located in and...  
WO/2006/110692A1
A centrifugal turbomachine includes an impeller and a speed sensor arranged to detect a speed associated with an impeller speed. A temperature sensor is arranged to detect a temperature associated with an impeller exit temperature. A con...  
WO/2006/102981A1
The invention relates to a submersible motor for a submersible pump, which is embodied as a one-phase asynchronous motor, and a main winding (6), an auxiliary winding (8) in addition to a start device (10, 14, 16, 18, 20, 22) which is us...  
WO/2006/066388A1
A pump for a liquid circulation system in the oil industry and method of sizing a pumping system, said pump having a rotor and a stator each defining a surface, the rotor surface defining an helical thread having a thread height and a th...  
WO2005055694A3
The following invention pertains to a method and apparatus for a pump (10) control system (28). One or more embodiments of the invention include a pump controller (28) that can perform a self-calibration procedure (100), provide precise ...  
WO/2006/035724A1
In a conventional water discharge pump assembled in an air conditioner, the rotation of a blade wheel produces cavitation to cause a problem with quietness. A vertical shaft water discharge pump of the invention has a rotor (23), a casin...  
WO/2006/032131A1
A pump system includes a fixed or variable capacity pump and a speed-related control mechanism to alter the capacity of a variable capacity pump or to alter the relief pressure of a fixed capacity pump in response to changes in the opera...  
WO2005111473A3
A method and apparatus are provided for controlling the operation of a centrifugal pump, featuring steps of either adjusting the operation of the pump, or issuing a warning to a user of the pump of an undesirable operating condition, or ...  
WO/2006/032132A1
Two embodiments are provided. In the first embodiment a variable capacity vane pump has a slide ring which is moveable to alter the capacity of the pump and the pump can be operated at either of at least two selected equilibrium pressure...  
WO/2006/019352A1
The present invention relates to control systems and methods for improving the handling of sewage or waste water in a pump station having at least one variable speed pump and for increasing the overall efficiency of the pump or the pumps...  
WO/2006/015693A1
The inventive control device for a liquid-pumping system comprises an electronic control unit which is connected to the liquid-pumping system, to actuating and adjusting devices and is associated with a display and/ or input device. Acco...  
WO/2006/017161A1
A sensor system for sensing liquid level in a bilge, for use in automatic bilge pump actuators. First and second field effect sensors are potted or sealed within a container or the bilge wall and are aligned in a vertical array and each ...  
WO/2006/010202A1
A pumping system in which a pump (5) is controlled by a programmed controller (22) is response to input signals from an inlet pressure transducer (3) and an outlet pressure transducer (15) and in certain circumstances inputs from various...  
WO/2005/121507A1
A system and method are provided for identifying underperformance in a pumping system used to produce a desired fluid. Various conditions are sensed during operation of the pumping system, and those sensed conditions are used to determin...  
WO2004001226A3
A vertically-disposed pump shaft (120) is supported by an upward force against the pump shaft during periods of non use of the pump thereby off-loading bearings (136) normally supportive of the shaft to prevent damage thereto when the pu...  
WO/2005/111473A2
A method and apparatus are provided for controlling the operation of a centrifugal pump, featuring steps of either adjusting the operation of the pump, or issuing a warning to a user of the pump of an undesirable operating condition, or ...  
WO/2005/111412A2
A self-calibrating, continuous variable speed fan for use in cooling electronic circuitry is disclosed. Upon initial power-up, in an environment of known temperature, the self-calibrating fan accommodates for the tolerances on its electr...  
WO/2005/111412A3
A self-calibrating, continuous variable speed fan for use in cooling electronic circuitry is disclosed. Upon initial power-up, in an environment of known temperature, the self-calibrating fan accommodates for the tolerances on its electr...  
WO/2005/108757A3
A turbocharger (24) comprising a turbine (28), director (2), and compressor (34). The turbine (28) may be formed as a turbine wheel (68) surrounded by at least two scrolls (26). The at least two scrolls (26) may direct exhaust gases supp...  
WO/2005/106253A1
The pump (1) comprises : a supporting enclosure (2-4) incorporating a shaped body (3) to which there is connected a volute (4) having an axial inlet (5) and a tangential peripheral outlet (6) for the fluid being pumped, a single phase sy...  
WO/2005/103497A1
A pressure pump for sludge, the overall height of which is kept low to reduce its size and in which a shaft sealing section is eliminated to reliably prevent water leakage. With a motor case (2) in the middle, a cutter (23) is provided a...  
WO/2005/098217A1
The invention relates to a method for operating a transport device (120) and to a transport device (120) for continuously transporting a liquid. The method and the transport device (120) are particularly suitable for use in a water injec...  
WO2005019655B1
The invention relates to an electronic driving device (20) for turning on and off a synchronous pump, that is a pump (15) comprising a synchronous electric motor (1) with a permanent-magnet rotor (8), comprising: - at least a static powe...  
WO/2005/088134A1
The invention relates to a method and an arrangement for controlling a pump station. The invention is preferably applied to a pump station connected to a well or a reservoir (460). The purposes of the invention are achieved with a soluti...  
WO/2005/081390A1
The invention relates to a method for diagnosing operating states (36, 38, 40, 42) of a synchronous pump in a liquid circuit, particularly in a washing machine or similar. According to the inventive method, the alternating voltage (U) ap...  
WO/2005/080798A1
It is possible to provide a highly-reliable small-size, simplified water supply pump system at low cost by deriving a NPSH required in actual operation condition with a high accuracy. By correcting a first NPSH required according to a te...  
WO/2005/078287A1
The invention relates to a method for determining faults during the operation of a pump unit. At least two electric variables that determine the electric output of the motor and at least one fluctuating hydraulic variable of the pump are...  
WO/2005/075827A1
The present invention provides a pumping system (60) comprising: a pumping mechanism (64); a motor (51) for driving the pumping mechanism; a drive control (50) for controlling the motor; and means (52) for monitoring at least one state w...  
WO/2005/064167A1
The invention relates to a rotary pump which comprises one or more pressure sensors for detecting a differential pressure (&Dgr p) produced by the rotary pump and an evaluation unit for determining an output indication (Q) on the basis o...  
WO/2005/055694A2
The following invention pertains to a method and apparatus for a pump (10) control system (28). One or more embodiments of the invention include a pump controller (28) that can perform a self-calibration procedure (100), provide precise ...  
WO2005024240A3
The present invention relates to a method and relevant electronic device (10) for determining the hydraulic flow rate in a pump driven by a synchronous electric motor (12), said motor (12) being of the type comprising a rotor (14), equip...  
WO/2005/040616A1
A water-lifting pump device and an operation control method for the pump device, where a discharge valve and a non-return valve can be eliminated to reduce costs, and vibration and noise caused by a waterfall after a water lifting operat...  
WO2002086318A3
A method and system to detect cavitation in a pump (100) and to determine the remaining life of a mechanical seal. A sensor (190) is included within the mechanical seal section (120) of the pump (100). Dynamic pressure changes occuring w...  
WO/2005/038262A1
The present invention provides a submersible turbine pump (STP) comprising a check valve located within a hydraulics cavity, wherein the STP provides the ability to depressurize the hydraulics cavity by relieving a pressure differential ...  
WO/2005/038261A1
The present invention provides a submersible turbine pump (STP) comprised of a manifold comprising an electrical cavity, a port above the electrical cavity, and a field wiring conduit through which electrical field wiring is brought into...  
WO/2005/038265A1
The present invention provides a submersible turbine pump (STP) including a packer and a manifold and that requires less force to separate the packer from the manifold. The STP comprises a casing body including the manifold and the packe...  
WO/2005/038264A1
A submersible turbine pump (STP) comprising a manifold, a yoke assembly including a yoke sleeve integrally connected to the manifold, and a packer removably secured to the manifold is provided. The manifold includes an electrical cavity ...  
WO/2005/035433A1
A submersible turbine pump (STP) is provided. The STP includes a manifold having an integral siphon connection coupled to a fuel flow path in the STP and a siphon cartridge removably inserted into the manifold via the siphon connection. ...  
WO2005019655A3
The invention relates to an electronic driving device (20) for turning on and off a synchronous pump, that is a pump (15) comprising a synchronous electric motor (1) with a permanent-magnet rotor (8), comprising: - at least a static powe...  
WO/2005/024240A2
The present invention relates to a method and relevant electronic device (10) for determining the hydraulic flow rate in a pump driven by a synchronous electric motor (12), said motor (12) being of the type comprising a rotor (14), equip...  

Matches 401 - 450 out of 6,982