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Patent Searching and Data


Matches 601 - 650 out of 3,489

Document Document Title
JP2010131303
To provide a compact centrifugal pump smoothly starting rotation of an impeller.The centrifugal blood pump has the impeller 10 arranged in a blood chamber 7, a permanent magnet 15 arranged in one side face of the impeller 10, a permanent...  
JP2010119859
To provide a method for estimating a flow rate of a blood pump which can effectively restrain accuracy of an estimated result of the flow rate from being deteriorated due to an individual difference of blood pump characteristics.The meth...  
JP2010121890
To secure the NPSH (Net Positive Suction Head) of a pump during water level control of a drain tank connected to a steam system of a power generation plant.This tank water level control system includes: a tank 1 for storing condensation ...  
JP2010115571
To safely and surely perform drain treatment by properly controlling the timing of stopping a drain pump.The water treatment device includes: a rainwater storage tank 2 storing rainwater; a drain pump 11 provided in the rainwater storage...  
JP2010084697
To provide a control device and method for a direct feed water supplying system of large rate of flow structured so that a parallel operation is conducted with variable speed pumps, capable of controlling the rate of flow of each pump so...  
JP2010084696
To provide a pump controller for a direct feed water supplying system of a large rate of flow controlled by a presumptive terminate pressure constant control capable of preventing a pump from cavitation even in the large rate-of-flow wat...  
JP2010065703
To provide a turbomachinery driving device using a dual inverter system and its control method for dispensing with a main controller for controlling both inverters and an external communication device for transmitting signals showing mut...  
JP2010059793
To provide a pump operation device capable of determining abnormality or normality of a pump by detecting discharge side pressure of the pump.The pump operation device has a single pump or a plurality of pumps connected in parallel, inle...  
JP2010053821
To provide a pump system capable of restraining power consumption at a low level.The pump system used for transport of river water and agricultural water comprises a transformer 7 for reducing voltage of power supplied from a power syste...  
JP2010048202
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...  
JP2010048020
To provide a monitoring control device for appropriately controlling drainage while attaining power saving without troubling an operator.The monitoring control device comprises an inflow amount predicting means 211 determining a predicte...  
JP2010031807
To make compatible both mechanical balance in air and hydraulic balance in fluid as an impeller 6 for a pump receiving force asymmetric with respect to a rotation center axis by fluid force in a radial inward direction acting on a prescr...  
JP2010022961
To provide a water treatment apparatus and method which enables the economical and efficient detoxification of hardly decomposable compounds such as organofluorine compounds.In the water treatment apparatus, organofluorine compounds in i...  
JP2010025042
To provide a pump flow rate estimating system and a pump flow rate estimating method, for estimating a flow rate of a variable speed pump driven by variable voltage and a variable frequency power source controlled by delivery pressure co...  
JP2010019222
To provide a pressure control method and a pressure control system of a pump which execute accurate estimated terminal pressure control when a plurality of variable-speed pumps driven by variable voltage and variable-frequency power supp...  
JP2010019220
To provide a pump device constructed to prevent the occurrence of reverse thrust therein while suppressing an increase of axial thrust on the suction side.A flow path length 20 of a clearance flow path which is formed between a side plat...  
JP2010019223
To provide a pump flow rate control method and a pump flow rate control system which automatically adjust flow rates of respective pumps and make shared flow rates of the pumps uniform when a plurality of variable-speed pumps driven by v...  
JP2010012338
To provide a fire extinguishing method using a fire extinguishing pump achieving sure and effective operation under disadvantageous conditions in a disaster in a high-rise building.This fire extinguishing method uses the fire extinguishi...  
JP2010014126
To provide a fire pump device capable of providing reliable and effective operation under a disadvantageous condition when a disaster occurs.This fire pump device has an electric pump 10 for forcibly feeding water, a plurality of water d...  
JP2010007552
To provide a fuel supply apparatus capable of precluding generation of a raspy beating sound.The fuel supply apparatus simultaneously drives a plurality of fuel pumps P1 and P2 having the same specification to pressure-feed fuel in a tan...  
JP2010007515
To provide an automatic operating device for an electric pump in which in the electric pump using a three-phase induction motor as a prime mover, current flowing in an opening/closing mechanism incorporated in an electric circuit for ope...  
JP2010001893
To efficiently and effectively supply a high pressure fluid for augmenting power of a gas turbine.A fluid supply skid with a pre-fill system for supplying fluid has one or more stages including a first valve and a second valve, each havi...  
JP2009299629
To appropriately generate micro bubbles while accurately grasping a change in the operating state of a pump such as clogging which occurs in a part of a flow path.A pump unit X is composed of a pump 2 which is operated at a prescribed ro...  
JP2009299670
To provide an automatic operation device for a motor pump making an opening/closing mechanism itself compact by making contact capacity small by reducing current flowing to the opening/closing mechanism built in an electric circuit for o...  
JP2009293578
To provide a variable displacement fluid pump which exerts as little resistance as possible to a flow of fluid.The variable displacement fluid pump has vanes of which effective heights are changed by moving a movable member. In the varia...  
JP2009288231
To solve a problem wherein there is a method of indirectly measuring a flow from total head curve as a pump intrinsic characteristic and actual head and pipe loss determined by a pump installation condition without using an electromagnet...  
JP2009264351
To provide a highly reliable operation control device of a pumping-draining facility, the pumping-draining facility and an operation method of the pumping-draining facility, capable of draining water by successively operating a pump arra...  
JP2009264190
To provide a submersible pump control panel and its control method capable of preventing idling with high accuracy even when submersible pumps are of a plurality of models or are installed in installation places of different situations.T...  
JP2009250033
To provide a water pump that can change a flow rate by performing torque transmission utilizing a magnetic force between a drive-side rotor body in a non-contact state and a driven-side rotor, which can reduce an air gap between the driv...  
JP2009243764
To provide a system and method for controlling a movable blade of a new circulating pump.The movable blade control system for the seawater circulating pump used in an electric power plant and connected to a condenser includes a movable b...  
JP2009228649
To avoid water supply stoppage by constructing a n-fold system autonomous distributed water supply control system driven by a variable speed drive means and providing back-up at a time of communication abnormality.In a system which const...  
JP2009228629
To provide a submerged pump device provided with a non-clog type impeller capable of appropriately coping with requested delivery quantity without preparing many impellers of different sizes and effectively utilizing an existing control ...  
JP2009215884
To provide a pump preventing vibration and noise caused by pump unstable operation, and stably supplying hot water by continuous pump operation.This pump 2 is provided with: a drive circuit provided in a motor and outputting a rotation m...  
JP2009215992
To provide a method for operation for a liquid pressurizing pump capable of further reducing wear of a seal ring.A control device 42 determines based on displacement measurement value of displacement detectors 43, 44 whether a gap betwee...  
JP2009209893
To provide a pump in which its blade is not damaged, a brushless motor is not demagnetized, and water inside the pump is prevented from freezing, thus preventing the pump from damaging.The pump 2 which circulates water 8 is equipped with...  
JP2009197701
To provide an operation monitor control device or the like which stores the instrument data in the optimum operating state in the beginning of installation and the quantized parameters in a non-erasable storage part, and monitors facilit...  
JP2009197689
To provide a water supply control device and its system capable of ensuring the consistent water amount and the consistent pressure when operating a plurality of pumps in a changing manner, and safely operating the pumps without any shut...  
JP2009191808
To provide transportable drain pump equipment enabled to be operated in a range to a low water level by preventing stoppage in a suction port of a drain pump by dusts, and to provide an operating method thereof.In this transportable drai...  
JP2009174409
To provide a pump device certainly started with low starting current.This pump device includes a plurality of pumps 1 arranged in a suction sump 20, and a control section 10 controlling operation of the plurality of pumps 1. Each of the ...  
JP2009150287
To provide a control device of a pump station and a pump station equipped with the control device that can prevent the water level of a sucked water tank from becoming significantly lowered to stably operate a pump.The control device of ...  
JP2009144658
To provide a pump facility capable of quickly starting a draining operation by a horizontal shaft pump by reducing the time required for starting the horizontal shaft pump and having enhanced reliability, safety, and economic efficiency....  
JP2009133226
To inspect a change of discharge resistance of a pump based on a general characteristic value used for operation control of the pump.A data acquisition section 11 acquires as an input characteristic value for calculation 2A a flow rate a...  
JP2009133253
To provide a pump operation control system capable equalizing operation time of each pump and reducing frequency of maintenance of each pump.When conducting operational controls of pumps P1 to P3 for supplying water from a water receivin...  
JP2009133290
To provide a reducing agent pump control device which can control impeller lock.The control device is provided with a pump case and an impeller. A pump chamber is formed in the pump case, and the impeller arranged in the pump chamber is ...  
JP2009133230
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 calcula...  
JP2009133227
To inspect pump measuring equipment while keeping normal operation of a pump system without imposing a burden on work for inspection.There provided are a reference operation point specifying section 16A for specifying a reference operati...  
JP2009133229
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 ra...  
JP2009114967
To provide a pump operation control device for starting a pump 5 arranged at a water storage part (water storage tank 1) in which water is stored for discharging the water in the water storage part when the water level in the water stora...  
JP2009108841
To prevent cavitation by increasing circulation water quantity according to a predetermined temperature rise of water near a preheater.In this water pump control system, temperature of cooling water near the preheater 23 heating cooling ...  
JP2009103028
To provide a control device and control method of rain water pump, which does not cause a hunting in a pump control.The device and method controls: a plurality of sets of pumps 301a, 301b including variable speed pumps; an engine 302 for...  

Matches 601 - 650 out of 3,489