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Matches 751 - 800 out of 6,923

Document Document Title
JP2013543074A
The invention relates to a Francis-type pump, comprising the following features: a blade wheel; a spiral housing; a suction pipe; a counter-swirl generator which is arranged in the inlet to the blade wheel and which can be activated duri...  
JP5348752B2  
JP5347171B2  
JP2013227975A
To enable estimation of a characteristic value (pressure, flow rate) of a pump circuit with an extremely high degree of certainty independently of a standard pump curve without the use of a sensor within a pump circuit.In relation to a m...  
JP5337290B2
To calculate a characteristic value of a pump with high accuracy without measuring operation characteristic data of the pump in advance. A device for calculating a pump characteristic value includes: a reference operating point identifyi...  
JP5337289B2
To calculate shaft power and consumption power required when a pump is operated at an optional operating point based on a pump characteristic value indicating the optional operating point. A reference flow rate calculation part 16A calcu...  
JP5336790B2
To certainly detect drought by solving the following existing problems: when muddy water or the like is used in a circuit detecting the drought, a motor current value is varied by a cause different from the drought, a conductor and an en...  
JP2013217275A
To provide a low-cost water supply system with improved maintainability and simple system configuration, while enabling easy pump operation control, and to provide an operation method of the water supply system.A water supply system incl...  
JP2013217274A
To provide a water supply system capable of increasing and reducing the number of pump devices in response to an actual load by maintaining precise detection of a water supply pressure.In a water supply system, n pump devices each includ...  
JP5323796B2  
JP5318263B2
To provide a method for starting a water supply system that can eliminate a lack of water supply pressure caused in such a case as when flush valves for flushing toilets in facilities such as a school are used simultaneously. The water s...  
JP5312600B2
Disclosed is a slurry pump that is capable of preventing the rotation of an impeller from being restricted by the solidification of slurry within an impeller casing when the slurry pump isn't operating. The slurry pump, which pumps store...  
JP5313848B2
To perform change control of a set differential pressure and a set water supply pressure without causing problems even in a system having both an inverter pump and a constant-speed pump. A lower limit set value change function of inverte...  
JP2013204531A
To provide a magnet pump device capable of preventing a large electric current from flowing in the beginning of start-up.A magnet pump device includes a pump casing 4 having an inlet 24 and an outlet 28, a driving magnet 8 arranged outsi...  
JP2013199839A
To provide a manhole pump device, having a simple and inexpensive constitution and capable of controlling generation of scum and also breaking the generated scum.A manhole pump device 10 discharges dirty water flowing into a water storag...  
JP5306284B2
To provide a pump device capable of highly reliability forming a self-siphon and performing siphon destruction at a low equipment cost using a simple piping system in which an electrically-operated valve requiring control is not required...  
JP5306881B2
To provide a control device for a manhole pump device that prevents the occurrence of foreign matter tangling in an impeller and blocking inside a pump casing by accumulating without increasing a starting frequency, and a control method ...  
JP2013194583A
To improve measuring accuracy of the output quantity of a liquid-state substance.A liquid feed device is configured to output a liquid-state substance stored in a storage section from an output port. The liquid feed device includes: a li...  
JP2013194603A
To provide a forced drainage pump which is easily retro-fitted to an existing drainage apparatus and capable of enhancing the flexibility of construction of a water section facility.A side part space 55 is partitioned into a storage cham...  
JP2013194610A
To provide a pump, a pump system, a method of controlling the pump, and a cooling system that prevent an impeller from becoming an obstacle of a flow channel.A pump includes: an impeller for moving fluid; a housing section that is provid...  
JP2013190199A
To provide a system and method for controlling characteristics of a solids feed material in a solids feed pump.A system includes a solid feed fuel pump configured to route a solid fuel flow from an inlet to an outlet. The solid feed fuel...  
JP2013185497A
To prevent an erroneous determination that a normal electric pump has a fault, by making a diagnosis considering a factor having an effect on fault diagnosis, in a fault diagnosis apparatus for an electric pump.After an electric pump is ...  
JP5286238B2  
JP2013174138A
To provide a well water usage measuring apparatus capable of accurately computing the usage of well water by measuring the operating time of a pumping motor in a measuring means that measures the usage of well water by installing a measu...  
JP2013170460A
To enable instantaneous changeover from a standby operation to a pumping operation even in the case of uniforming the pumping operation time of pumps by reducing transitional load fluctuation in domestic power generation equipment having...  
JP5276309B2
To calculate a highly precise characteristic value of a pump without previously measuring operating characteristic data of the pump. There provided are a reference operation point specifying section 16A for calculating a reference flow r...  
JP5274524B2
To achieve prevention or mitigation of a surging phenomenon of a suction water tank and reduction of a load of power supply equipment, while equalizing a discharge operation time of each pump, without increasing the scale of a pump stati...  
JP5276310B2
To calculate, based on a pump characteristic value indicating an arbitrary operation point, a shaft power and power consumption required when operating the pump at the operation point. A reference flow rate calculation section 16A calcul...  
JP5263093B2
To reduce power consumption by controlling speed of rotation of a pump while maintaining the water level of the tank of water treatment equipment in a fixed range. The water treatment equipment includes at least two tanks for storing wat...  
JP2013148099A
To provide an inexpensive pumping system with a simple structure, configured to reliably supply priming and detect pumped water even if a water pump is used in a tilted state, and to prevent freezing in a priming pipe even if the water p...  
JP2013147986A
To provide a pump control system coping with a failure of a power supply system while increasing redundancy by providing a plurality of electric pumps to a fluid passage.A pump control system includes a first electric pump P1 and a secon...  
JP5248618B2  
JP5244690B2  
JP5230168B2  
JP2013130122A
To notify a user of a pump operating state by visualizing the state and to perform automatic operation depending on the user's intent.A control part 50 calculates a lifting range of a pump 10 based on an suction port and ejection port of...  
JP5222203B2  
JP5214296B2  
JP5213295B2  
JP5215778B2  
JP5215647B2  
JP2013117195A
To provide a water supply system that reduces wasteful operation power by performing pressure control equal to or not lower than direct terminal-end constant pressure control, and is favorable in response.A water supply system comprises:...  
JP5209330B2  
JP2013108446A
To provide a pump control method and a control device therefor, capable of striking a balance between reduction in liquid draining time and prevention of cavity generation, while simplifying a structure.A pump control device includes a d...  
JP2013096311A
To provide a pump control system capable of maintaining the operation of a plurality of pumps at the optimum efficiency point even if the pump characteristics are degraded with the elapse of time by minimizing energy consumption by opera...  
JP5200157B1
[Subject] The endurance of a dynamic pressure bearing pump is raised. [Means for Solution] Drive controlling device 300 of dynamic pressure bearing pump unit 1, Number-of-rotations operation volume 350 for changing number of rotations of...  
JP2013087622A
To provide a pump capable of stabilizing axial self-oscillation while balancing axial thrust by a simple structure and capable of reducing a leaking flow rate of a slit.The pump includes: a shaft on which an impeller and a pressure sleev...  
JP5193896B2  
JP5193317B2  
JP2013072347A
To prevent an operation deviating from an upper or lower limit input/output range and an operation deviating from a proper rotational speed and a proper guide vane opening, by accurately calculating a simulated total pump head or simulat...  
JP5184416B2  

Matches 751 - 800 out of 6,923