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Patent Searching and Data


Matches 651 - 700 out of 7,155

Document Document Title
WO/1992/001297A1
A boiling water nuclear power plant (100) includes a reactor core isolation cooling (RCIC) system in which a turbine (146) used to pump feedwater to the reactor also drives a generator (200). The generator (200) is used to drive RCIC com...  
WO/1992/001292A1
A drive (10) for positioning a control rod (12) in nuclear reactor core (104) is disclosed. The drive includes a turbine rotor (34) joined to hollow spindle (26) in a housing. The spindle has a piston (82) disposed therein and a piston r...  
WO/1992/001298A1
A recirculation system (10) is disclosed for driving reactor coolant water (114), contained in an annular downcomer (118) defined between a reactor vessel and a reactor core spaced radially inwardly therefrom. The system includes a plura...  
WO/1992/001291A1
A reactivity control system includes a reservoir (42) containing a liquid nuclear poison (44), at least one stationary, hollow control blade (32) extending vertically into a reactor core (14), and a poison conduit (52) disposed in flow c...  
WO/1992/001293A1
A recirculation system (10) is disclosed for driving reactor coolant water in an annular downcomer (118) defined between a reactor vessel and a core shroud (12) spaced radially inwardly therefrom. The system supplies feedwater to the ves...  
WO/1992/001289A1
A reactor core (104) includes upper and lower matrices of fuel bundles. Fuel rods in the upper matrix (126) have their plenums oriented upward, while fuel rods in the lower matrix (124) have their plenums oriented downward. Refueling inv...  
WO/1992/001294A1
A drive (10) for positioning a control rod (12) in a nuclear reactor is disclosed. The drive (10) includes a housing (112) having a piston disposed therein, with a piston rod extending from the piston and through the housing for being jo...  
WO/1991/019170A1
A detector for detecting flow of fluid (4) having a heater (1) operable to transfer thermal energy (6) to a body of fluid (5) with which the detector is associated and first (2) and second (3) temperature sensors each of which is operabl...  
WO/1991/016541A1
The pump (P) includes a discharge head (34) having a pair of axially spaced end walls (56, 58). A tank (12) includes a housing (52) in communication with a liquid outlet conduit and forms part of a substantially permanently stationary pi...  
WO/1991/004099A1
An anti-flooding sewage grinder pump liquid level control system in a separately mounted canister is provided for installation within and controlling operation of a sewage grinder pump installed within a sewage collection tank (11). With...  
WO/1990/015252A1
A low pressure recirculation valve for cooling a centrifugal pump. A valve casing (12) having a first chamber (14) with an inlet (18) and a recirculation port (22), and a second chamber (16) with an outlet (20). A multiple piece check va...  
WO/1990/015251A1
The present invention relates to a method and apparatus for controlling the operation of a centrifugal pump. The method and apparatus in accordance with the present invention is especially developed for eliminating or minizing the proble...  
WO/1990/013460A1
A double-acting pump has two outlet channels (47, 48), which can be selectively charged with liquid in function of the direction of rotation, and two movable sealing membranes (36, 37) each of which is associated with an outlet channel (...  
WO/1988/007126A1
A drive assembly brake (80) is mounted in the gearbox (22) connecting a motor driven input shaft (24) to an output shaft (26), the output shaft being connected by a tubing string (10) to a submersed rotary pump. The gearbox includes an o...  
WO/1988/002831A1
Automatic recirculation valve for use in installations where a minimum flow is required for protecting such as centrifugal pumps. The valve includes a valve housing (13) with a plunger (12) controlled by a main flow and a spring (2). The...  
WO/1986/001861A1
Closed piping systems for liquids require pressure maintaining arrangements to define the level of pressure in the piping system in relation to the surrounding atmosphere. Various values of heights of delivery along the piping system are...  
WO/1985/001087A1
In a float switch, which is provided particularly for immersion pump systems with an electric motor connectable and disconnectable as a function of the level and with a pump coupled thereto and immersed into the liquid to be discharged a...  
WO/1983/004286A1
The method is applied to a turbomachine, particularly to a pump, and to a support for a pressure sensor of a gaseous or liquid fluid, particularly an electronic pressure pick-off. The pressure or differential pressure of the fluid (3) co...  
WO/1983/003461A1
A device allows to reduce the power used by the motor of a circulation pump actuated by an electric motor for heating installations. The reduction is obtained by interrupting periodically the network power supply by means of an electroni...  
JP2017166423A
[Subject] Submerged bearing is supplied by using clean water separated from pumping to discharge as lubricous water. [Means for Solution] Pump 10 is provided with the following. Pump casing 12, Axis of rotation 20 arranged at pump casing...  
JPWO2016067558A1
In order to control advance of degradation of a water pipe, it is a water service managerial system, The water pressure detection part which detects the water pressure of at least one place of the water pipe for carrying clean water to a...  
JP2017160877A
[Subject] When starting a pump in the state of discharge valve full open, even if own strength siphon formation etc. are needed, pump equipment and pump equipment which sufficient reduced voltage starting can be performed, and can be sta...  
JP6189254B2  
JP2017145746A
[Subject] An electric rotary pump system which can be drained using a plurality of electric rotary pumps efficiently by turns is provided. [Means for Solution] This electric rotary pump system 100 is provided with the following. A plural...  
JP2017145830A
[Subject] A space-saving pumping plant which can perform good gear change operation control with a pumping plant simple substance is provided ensuring heat dissipation. [Means for Solution] In a pumping plant with which a pump part which...  
JP6184792B2  
JP6186366B2  
JP6185737B2  
JP6184428B2  
JP6185284B2  
JP2017141788A
[Subject] Provide an auxiliary pressurization pump unit applicable also to little fire-extinguishing device of a flow. [Means for Solution] It is a pumping plant for auxiliary pressurization which is connected to firefighting equipment w...  
JP2017141771A
[Subject] Suspension of water supply is avoided, and pressure of a water tap can be maintained, and a control method of a boiler feeding device with high energy efficiency and a boiler feeding device is proposed. [Means for Solution] A b...  
JP2017137801A
[Subject] A boiler feeding device which can distinguish clearly a temporary defect of operation and failure of a flow element is provided. [Means for Solution] A boiler feeding device is provided with the following. Pump 2, Electric moto...  
JP2017137849A
[Subject] A control method of a pump unit which can stop decreased pressure at the time of Reduction , and a pump unit is provided. [Means for Solution] A pump unit concerning one form of the present invention is based on discharge press...  
JP2017522558A
The present invention relates to a method of determining the amount of discharge of a pump. In relation to this, a value like Yo of a pump and a value of power of a pump are measured. Each frequency function to Head and power is calculat...  
JP2017137799A
[Subject] A boiler feeding device which can detect failure of a flow element certainly is provided without [with a temporary flow element] outputting an alarm, if unusual. [Means for Solution] A boiler feeding device is provided with the...  
JP2017137874A
[Subject] A possible fuel pump of preventing a vapor lock of a pump room is provided. [Means for Solution] ECU of a fuel pump carries out feedback control of the drive of a motor, and makes number of rotations of an impeller number of ro...  
JP2017137811A
[Subject] Idling of an impeller is detected certainly and damage to a horizontal-axis pump is prevented. [Means for Solution] Horizontal-axis pump 10 is provided with the following. Suction pipe 13, suction elbow 16, impeller casing 15, ...  
JP2017137800A
[Subject] A boiler feeding device which can detect failure of a flow element certainly is provided without [with a temporary flow element] outputting an alarm, if unusual. [Means for Solution] A boiler feeding device is provided with pum...  
JP2017137810A
[Subject] At a pump machine place which uses a horizontal-axis pump, soundness of a flap valve is checked with simple composition, without pulling up a flap valve on the water surface. [Means for Solution] A pump machine place is provide...  
JP2017133409A
[Subject] While controlling waste of pump power in an air lock state, a drain pump provided with high reliability and the ease of a maintenance and an operating method for the same are provided. [Means for Solution] Under floor pipe 3 wh...  
JP2017129108A
[Subject] A pumping mode pattern control method controlled so that a pumping plant serves as energy-saving operation is provided. [Means for Solution] In a pumping mode pattern control method of the present invention, it is not because i...  
JP6170302B2  
JP2017122417A
[Subject] The present invention provides a boiler feeding device which can acquire energy-saving nature and the stability of pressure control. [Means for Solution] Pumping plant 20 with which boiler feeding device 1 is provided with moto...  
JP2017518462A
Before according to the 1st mode the present invention relates to how to carry out stop operation of the pump (2) constituted so that the pump transfer of the fluid might be carried out via a lead pipe (4) and stop operation of this pump...  
JP6157278B2  
JP2017516947A
When a pump is choked up as for the present invention, it relates to a method for controlling a pumping plant, A pumping plant is provided with a pump and a control unit, and a pump is provided with a motor, It can be constituted so that...  
JP6149182B2  
JP6149976B2  
JP2017106469A
[Subject] When a flow rate sensor of a paddle type is used, suppress pressure loss as much as possible. [Means for Solution] A self-priming chamber provided in the discharge mouth side of a whirlpool pump driven with a drive motor, A vap...  

Matches 651 - 700 out of 7,155