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Patent Searching and Data


Matches 451 - 500 out of 6,693

Document Document Title
WO/1992/001295A1
The wetwell space in a suppression pool (26) of a nuclear reactor containment is continuously ventilated by exhausting gas therefrom, while at the same time, during normal system operation atmospheric air from a source of same is admitte...  
WO/1992/001296A1
A method and system (10) for controlling nuclear reactivity in a nuclear reactor are disclosed. The method includes maintaining a nuclear poison solution at an initial poison pressure (P1) less than the steam pressure within the reactor ...  
WO/1992/001299A1
Fuel bundles of a boiling-water nuclear reactor are inverted during refueling methods. Bundles burned in a first orientation are subjected to greater burnup near their bottoms and greater conversion of fertile fuel to fissile fuel near t...  
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/1992/001297A1
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/1992/001291A1
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/1992/001292A1
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/1992/001290A1
In accordance with the present invention, a nuclear reactor (100) with a recirculating heat transfer fluid has a bi-level core which provides enhanced flexibility in fuel arrangement. The bi-level core (104) includes two sets of fuel uni...  
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/1990/015251A1
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/1990/015252A1
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/1990/013460A1
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...  
JP5587386B2  
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JP2014163279A  
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JP5550960B2  
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JP2014121371A  
JP5524285B2  
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JP5508822B2  
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JP5506347B2  
JP2014095354A
To provide a pump system that can detect backflow of liquid flowing in a pump pipe without providing a backflow detector in the pump pipe.A pump system comprises: a plurality of pump units 2A, 2B, and 3C each including a pump P and a mot...  
JP5492910B2  
JP2014080874A
To suppress the heat generation of a bearing due to flow rate deterioration by stopping rotations of a rotor, when pump efficiency is deteriorated.A control portion 7 for controlling feeding voltage to a stator 5 so as to keep a predeter...  
JP2014080950A
To provide a low cost water supply system in which a water supply device have functions for specifying a pressure desired value, an initial time inverter frequency (a desired flow rate) and a required number of pumps and a useless operat...  
JP2014074362A
To remove floating contaminant in self-priming pump through repetitive withdrawal operation.A self-priming pump system 1 comprises a lift pump 11 for sucking up sewage water W1, self-priming tank 13 for performing gas-liquid separation o...  
JP5475607B2  
JP2014062505A
To provide a water supply device in which starting frequencies of pumps are managed to a prescribed value, and a wasteful operation is excluded while equalizing operation loads in operating the plurality of pumps.A water supply device in...  
JP5460425B2  
JP2014055532A
To provide a water supply device capable of managing a starting frequency of a pump to a prescribed value, and excluding a wasteful operation while equalizing operation loads in operating a plurality of pumps.A water supply device in whi...  
JP5443645B1  
JP2014043838A
To provide a feed-water pump and a full water level detecting method of the feed-water pump capable of properly judging whether an internal part of a pump body arrives at a full water level when performing the priming water even in the c...  
JP2014043800A
To provide a pump control device in which an additional inverter device can be easily installed at low cost and that can continue pump operation even if a state quantity measuring device such as a pressure sensor fails.A first inverter d...  
JP5439378B2  

Matches 451 - 500 out of 6,693