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Patent Searching and Data


Matches 501 - 550 out of 6,796

Document Document Title
WO/1994/010448A1
An apparatus for the transporting and slurrying of cuttings from an oil well or drilling rig, the slurry (40) is contained in a vessel (10) and the pump (24) is situated at the lower outlet with its axis of rotation substantially vertica...  
WO/1994/010489A1
A method and apparatus for monitoring and analyzing the performance of a recirculation control system are disclosed. According to the invention, the pressure of the liquid passing through the control system is measured directly by pressu...  
WO/1994/010449A1
In the state of the art, sludgers for pumping visquous fluids in which a lower viscosity solvent liquid is added to the fluid are filled with the visquous fluid when they are sunk into the borehole. In order to start the sludger, therefo...  
WO/1994/007032A1
A pump protecting slide valve has a housing (1) with an inlet (1A) at the side of the feed pump, an outlet (1B) at the side of the useful current and a bypass opening (Ac) at the side of the secondary current. A spindle (6A) is slidably ...  
WO/1994/004789A1
A pump system is disclosed for downhole use. The pump system comprises a first pump (16) and a second pump (46) in end to end relationship and the pumps are remotely and independently actuable.  
WO/1993/014450A1
A device is disclosed for regulating the flow rate of a fluid circulated in a closed network of pipes by a centrifugal pump, in particular for regulating the circulation of water in a heating system. In order to adapt the regulator to th...  
WO/1993/011360A1
A centrifugal pump having a diffuser (1) engaging with a rotor (25), a suction body (2) and a delivery body (3) fixed to the upstream and the downstream ends (1a, 1b) of the diffuser respectively and provided with corresponding suction a...  
WO/1993/001538A1
A recirculation valve (10) for cooling a centrifugal pump. The invention comprises a valve casing having a first chamber (14) for connection to a centrifugal pump and a second chamber (16) for connection to a fluid outlet, a recirculatio...  
WO/1992/022764A1
A method and apparatus for monitoring the performance of a recirculation control system are disclosed. According to the invention, the pressure of the liquid passing through the control system is measured directly by pressure and differe...  
WO/1992/018775A1
The multi-stage rotary pump proposed has a first normally priming rotary-pump stage and subsequent self-priming stages. In order to improve the self-priming capability and waste-escape security of the pump, in particular when fluids are ...  
WO/1992/015784A1
A water flow system for collecting and discharging waste water, storm water and the like includes a water pumping station into which water is delivered through an inflow main (16) and from which water is pumped through a water discharge ...  
WO/1992/011150A1
Said device is comprised of an adressing chamber CD which houses two membranes (M1,M2/ M3,M4/ M5,M6/ M7,M8) of high flexibility which may be provided with means for compensating the loss of elasticity. In the absence of washing liquid pr...  
WO/1992/008627A1
The disclosed pump is comprised of a shell (E) coupled to a container (DP) of washing liquid (L), the shell (E) being formed by a body (CB) and by a lid (TC) coupled to each other. The body (CB) forms a tubular section extension (1), a c...  
WO/1992/006302A1
A pump (10) comprises a hollow cylindrical body (12) open at one end. A central hole (14) is provided through the closed end of the body (12) with a perimeter wall (16) around the hole (14) of the same height as the boundary wall (18) of...  
WO/1992/005402A1
An apparatus for measuring change of position of a rotor in a drive system comprising a drive rotor and a driven rotor generally concentrically mounted with respect to the drive rotor, the drive and driven rotors being magnetically coupl...  
WO/1992/003229A1
A method of separating an aqueous solids containing suspension includes (a) subjecting a first solids containing suspension to centrifugal forces so as to separate the suspension into a first gas containing flow, a second gas-free flow a...  
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/1992/001293A1
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/1992/001295A1
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...  
JP2015086720A
【課題】スタータ10を構成する部品の数を 低減させることのできるシステム、及びシス テムの制御装置を提供する。【解決手段】バ ッテリ44、スイッチング素子S¥#、...  
JP2015086805A
【課題】キャビテーションによる不安定現象 を抑制しつつ、低流量時の不安定特性を抑え ることのできる回転機械を提供する。【解決 手段】ブレード3を有して、軸線O回り...  
JP2015087920A
【課題】給水設備の管理システムを容易に構 築できるようにした給水設備の管理装置、並 びに、この管理装置を用いた給水設備の管理 システムを提供する。【解決手段】給水...  
JP2015082940A
【課題】複数個の電極対に電圧を印加してE HD効果により作動流体を流動させる技術に おいて、1個の電極対に短絡が発生したとし ても流体圧送装置を作動させ続けること...  
JP2015078671A
【課題】、高額な高揚程ポンプを必要とせず 、建造物の途中階に中継用の機器を設置する 必要がないポンプ装置の提供。【解決手段】 地下に埋設された貯液設備(燃料油の地...  
JP5704882B2  
JP3196925U
【課題】揚水ポンプに対し個々に計測器を設 置して井戸水の使用水量を計測し、この使用 水量に応じた下水道料金を請求する計側手段 において、揚水モーターの稼働時間を測...  
JP5695790B1
【課題】大型機器・設備の冷却やあるいは消 火活動等のために必要な大量の水を、途切れ ることなく、確実に連続的に大量に送水する ことを実現する大容量送水システムを提...  
JP5698603B2  
JP2015059480A
【課題】ケーシング内の液体が凝固するおそ れがある場合に、迅速に液体の温度を上昇さ せる。【解決手段】給水装置コントローラ5 00は、羽根車、及び液体の吸い込み口...  
JP5685501B2  

Matches 501 - 550 out of 6,796