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Document Title |
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6533536 |
Hydro-turbine runner
A turbine installation comprising a turbine in combination with an electrical closed-loop control system. The turbine is disposed in a flow of water for producing electrical energy. The turbine...
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6402477 |
Adjustable blade turbines
A turbine, adaptable to improve the survivability of fish present in water flowing therethrough, includes a hub and associated runner blades. Each blade comprises an inner edge and a distal outer...
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6398484 |
Centrifugal compressor and shaft seal
A shaft seal system prevents working gas in a centrifugal compressor from leaking outside from the compressor. The shaft seal system is of an oil film seal type and located in the compressor in...
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5984626 |
Evacuation means for pumps
The present invention is for an evacuation system which preferrably in its entirety is connected to and operates at the outlet side of a pump. The evacuation system is connected to the socket 5 by...
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5868550 |
Pump assembly
A pump assembly, comprising a pump with a chamber having a vacuum region therein, a priming fluid reservoir, a suction line for fluid communication between the vacuum region and a fluid source, and...
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5520510 |
Mechanism for preventing back-flow for pump discharge pipes
A mechanism for preventing back-flow for a discharge pipe of a pump. The discharge pipe terminates in a container and essentially runs vertically upward. A bell-shaped hood is turned over the exit...
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5472312 |
Water level regulating system
A water level regulating system controlling the water level of a head tank of each of a plurality of hydroelectric plant installed in cascade along a stream by using an opening of guide vanes of a...
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5252025 |
Drainage pump
A drainage pump (10) in which the portion near the entrance of the impeller (12) in the suction tube (11) is open to the set lowest suction water level (L.W.L.) through an air intake pipe (15), so...
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5154570 |
Vertical shaft pump
A vertical shaft pump to be disposed in a pump pit comprises a pump casing having a suction opening, and an impeller disposed in the pump casing below a position corresponding to the lowest water...
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5154741 |
Deep-water oil and gas production and transportation system
A deep-water oil and gas production and transportation system including a wet Christmas tree, a 2-phase oil/gas vertical separator, a gas cooler, a vertical tubular scrubber and a motor-pump, and a...
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5145314 |
Low drag pitot pump and method of operating same
A method of operating a pitot pump that pressurizes a first fluid of a first viscosity and first density wherein the pump includes a rotatable housing and a stationary probe disposed within the...
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5087171 |
Paper pulp centrifugal pump with gas separation
The invention relates to a centrifugal pump particularly adapted for pumping fibrous suspensions from within a reservoir, wherein the pump includes a rotor arranged wholly within the reservoir for...
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5074746 |
Constant speed vertical pump with aeration
According to the vertical pump of the present invention, a reverse U-shape air suction passage is connected to a suction casing which communicates with the impeller chamber, and a U-shape branch...
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4936744 |
Centrifugal pump
The invention relates to a centrifugal pump of the type adapted for use in pumping multiple phase liquids, i.e. liquids having entrained gas and liquids having both entrained gas and solids. The...
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4889468 |
Submerged type pump
There is disclosed a submerged type pump which is vertically seated on the seating face arranged on the bottom of the fluid lifting column and is comprised of a motor section and a pump section...
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4688986 |
Bulb turbine emergency counterweight system
A fluid container associated with the wicket gate operating ring to receive fluid from a source so as to add an emergency counterweight to the gate operating ring upon failure of the gate operating...
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4683718 |
Method and apparatus for monitoring hydro turbine plants
A method and a device for monitoring hydro turbine plants. The device comprises one or several hydro turbines, at least one of them having adjustable vanes. For optimum utilization of the available...
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4679980 |
Gravity insensitive inventory control device for a two-phase flow system
An inventory control device for a pitot pump used in a two-phase flow system, such as a closed-cycle Rankine system or a two-phase cooling loop for space vehicles. In these systems, there is a...
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4674279 |
Control system for run-of-river hydroelectric plant
A control system for a hydroelectric power plant of the run-of-river type wherein the load on the turbine-generator units is matched to the flow of the river so that the units operate at the...
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4629393 |
Method of operating multistage hydraulic machinery
In a water level depressing operation of a multistage hydraulic machine, first, the guide vane in the maximum-pressure stage is totally closed. Then, the respective guide vanes in the remaining...
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4547123 |
Multi-stage hydraulic machine and method of operating same
A multi-stage hydraulic machine which includes a plurality of runner housings or chambers each having a runner positioned therein, a head cover and an intermediate speed ring, movable guide vanes...
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4472105 |
Rotary type pumping machine
A rotary type pumping machine such as a pump turbine in a pumped storage hydro-electric plant, wherein, when the pumping operation of the runner of the machine is started, compressed air is...
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4461614 |
Through flow sump pump
An improved sump pump apparatus of submersible nature of the type in which a pump impeller is located above an intake opening for drawing sump water through the intake opening and expelling the...
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4344735 |
Method of controlling two-stage hydraulic pump-turbines
A method of controlling a two-stage hydraulic pump-turbine, rotating at a constant speed under a steady condition, in which high and low pressure stages are connected through a return passage. The...
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4137005 |
Oceanic wave powered prime mover
A prime mover has a number of bladed rotors supported on a drive shaft over the surface of a wave-generating body of water for rotating the shafts by action of waves against the rotors. Unique...
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4130373 |
Erosion suppression for liquid-cooled gas turbines
By maintaining a circumferentially-continuous, rotating film of water on the housing of a water-cooled gas turbine, kinetic energy imparted to the cooling water droplets by rotational velocity of...
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3945754 |
Hydraulic machines and operating method thereof
A hydraulic machine, such as a reversible pump-turbine, is provided with an automatic air vent valve disposed in the casing area and a conduit having a valve for providing direct fluid...
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3730638 |
SPEED GOVERNOR
A speed governor system for a hydraulic or pumper turbine being fed water from a penstock for controlling the output of the turbine under varying load conditions. When the load of a generator...
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3708239 |
MEANS AND METHOD OF REGULATING FLOW FROM CENTRIFUGAL PUMPS
The flow regulating means includes a regulator shell having a tangentally placed inlet tube at its lower closed end, the upper end being open. The shell is submerged at a level below the normal...
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3591316 |
AUTOMATIC CENTRIFUGAL PUMP PRIMER
A valve assembly connected in series between a source of vacuum pressure and the intake port of a centrifugal pump. The valve assembly includes a float chamber and float therein for monitoring the...
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3582227 |
LIQUID SUPPLY PUMP
A pump assembly to supply liquid at a low pressure to an apparatus consists of a vacuum activated fuel lift device wherein fuel from a submerged or raised fuel supply tank is caused to flow by...
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3521445 |
WELL PUMPING SYSTEM
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3464360 |
ARCHIMEDEAN SCREW PUMP
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3447782 |
SUPPLY OF SEALING FLUID FOR ROTARY FLUID MACHINES
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3439687 |
CONTROL SYSTEM FOR AN AUTOMATIC DISHWASHER
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3434430 |
SELF-PRIMING PUMP SYSTEM WITH EXTERNAL ACTUATING MEANS
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3402671 |
Centrifugal pump and sealing means therefor
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3339567 |
Method and system for adjusting the closure of flowrate adjusting devices for hydraulic turbines, pump turbines, pumps, and the like
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3327144 |
Carrying handle and switch assembly for a submersible motor
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3296973 |
Centrifugal pumps
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3291058 |
Quick priming centrifugal pump
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3251303 |
Anti-cavitation structure for sink drains and the like
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3237562 |
Underwater mining
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3219051 |
Control system
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3093080 |
Hydraulic pumps
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3091184 |
Pump anti-cavitation device
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2945446 |
Pressure sensitive reservoir emptying system and apparatus therefor
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2914081 |
Flood control device
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2884185 |
Suction tank head
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2804019 |
Submersible sump pump control
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