Abstract: A dual chamber assembly for continuously injecting slurry into a wellhead by displacing it from chambers with pressurized clean fluid.

Abstract: A multiphase flow mixed delivery device employing reciprocating driving performed by a liquid in two chambers comprises a left container (1), a right container (2), a power pump (3), a data acquisition and control system (4), a solenoid valve group, a check valve group, an inlet manifold (5), and an outlet manifold (6). A vacuum suction chamber and a compression discharging chamber alternately formed by the two containers serve as a suction chamber and a discharging chamber of a multiphase mixed flow delivery pump. After gas in a liquid-gas mixture is separated in the container, the gas is compressed by a liquid, and is discharged out of the container. The power pump constantly operates in a pure liquid working condition, thereby eliminating the issue in which a liquid with a high gas content affects the power pump.

Abstract: A hydraulic unit is provided with: a manifold which forms a hydraulic circuit; a tank which is joined to the manifold; and a hydraulic pump which suctions hydraulic fluid in the tank and supplies the hydraulic fluid to the manifold, wherein the base end portion of a suction strainer is fitted into the hydraulic pump, and the suction strainer has such a shape that the base end portion of the suction strainer is not separated from the hydraulic pump in a state where the leading end portion of the suction strainer is in contact with the tank and an opening through which the hydraulic fluid is introduced from the tank is provided at the leading end portion.

Abstract: A method of compressing gas includes maintaining a volume of gas at a first pressure within a first chamber. Pressurized liquid is forced into the first chamber through a nozzle having a curved profile. Based on the Coanda effect, the liquid compresses the volume of gas to a second pressure greater than the first pressure. The liquid is separated from the gas in a second chamber while maintaining the gas at the second pressure to provide compressed, dry gas.

Abstract: A pumping system is disclosed comprising a supply pipe, a delivery pipe, a pump capable of pumping a liquid, a first tank with a top port and a bottom port, a second tank with top port and a bottom port, a first pipe switcher operable to switch connections the supply/delivery pipes and the top ports, and a second pipe switcher operable to switch connections between the bottom ports and the pump inlet/outlet. The pipe switchers serve to switch input and output connections such that the tanks are swapped from a position between the supply pipe and the pump inlet and a position between the pump outlet and the delivery pipe. Uses for cooling systems, air compressors, deep wells, and oil extraction are also disclosed.

Abstract: Diaphragm assemblies for use with fluid control devices are described. An example diaphragm assembly includes a body defining a plurality of chambers to be fluidly coupled to an outlet pressure of a fluid control device. Each of the chambers is spaced along a stem at least partially disposed in the chambers, and the stem is to move to control a flow of fluid through the fluid control device. Additionally, the example diaphragm assembly includes a first plurality of diaphragms, each of which is disposed in a corresponding one of the chambers, and each of which is coupled to the stem to move the stem in response to the outlet pressure of the fluid control device.

Abstract: The invention relates to a compressor (1) for the compressing of gaseous medium with at least one compressor cylinder (4a; 4b; 4c; 4d; 4e) which is connected with an inlet duct (6) and with an outlet duct (7) for the medium, an operating fluid (5), in particular an ionic operating fluid, being arranged in the compressor cylinder (4a; 4b; 4c; 4d; 4e), which fluid is connected with a displacement machine (2), the displacement machine (2) being constructed as a piston machine with at least one cylinder chamber (2a; 2b; 2c; 2d; 2e) and each cylinder chamber (2a; 2b; 2c; 2d; 2e) being connected with a compressor cylinder (4a; 4b; 4c; 4d; 4e).

Abstract: A rotary pressure exchange device for transferring the pressure of a high pressure stream of first fluid to a low pressure stream of second fluid having an improved substantially cylindrical rotor (41, 51, 61). The rotor is formed to provide a plurality of longitudinal passageways comprising the lumens (49) of parallel tubes (47, 73) of circular cross-section which are located uniformly throughout an annular region. Certain preferred embodiments include an outer tubular casing (43) of circular cross-section and a coaxial central hub (45).

Abstract: An engine having at least one displacer cylinder in which a liquid, in particular an ionic liquid, is arranged and which can be connected to a feed passage and a discharge passage for a medium, is disclosed. The liquid is operatively connected to a displacer device. The displacer cylinder is arranged in a cylindrical drum, rotatably mounted about an axis of rotation, at an angle to the axis of rotation of the cylindrical drum. In an embodiment, the displacer cylinder is arranged perpendicularly to the axis of rotation of the cylindrical drum, and the displacer cylinder is designed as a radial bore arranged in the cylindrical drum.

Abstract: A pressure exchanger for the transfer of pressure energy from a high pressure fluid stream to a lower pressure fluid stream wherein a generally cylindrical housing contains a rotor having a plurality of channels extending axially therethrough and a pair of end covers which slidingly and sealingly interface with respective end faces of the rotor. The end covers are supported against deformation by high pressure upon the end covers in an inward direction, as by exerting a balancing comparable outward axial force upon inward surfaces of the end covers through the employment of pressure-balancing chambers that are in communication with a high pressure fluid region at one end cover.

Abstract: Down-sizing of a pump for sucking two types of different fluids is realized. The pump is provided with a cylinder pump having a cylinder main body having a reciprocally movable piston, a first cylinder chamber partitioned at one side of the piston for being introduced with a first fluid, and a second cylinder chamber partitioned at the other side of the piston for being introduced with a second fluid, and piston driving means for reciprocally moving the piston of the cylinder pump.

Abstract: A storage vessel is filled with compressed gas by filling a first tank with gas from a low pressure gas source. Hydraulic fluid is drawn from a reservoir and pumped into the first tank in contact with the gas. This causes the gas in the first tank to flow into the storage vessel as it fills with hydraulic fluid. At the same time, gas is supplied from the gas source to a second tank. Hydraulic fluid previously introduced into the second tank flows out to the reservoir as the second tank fills with gas. When the first tank is full of hydraulic fluid, a valve switches the cycle so that the hydraulic pump begins pumping hydraulic fluid back into the second tank while the first tank drains. The cycle is repeated until the storage vessel is filled with gas to a desired pressure.

Abstract: A pressure exchanger for simultaneously reducing the pressure of a high pressure liquid and pressurizing a low pressure liquid. The pressure exchanger has a housing having a body portion; with end elements at opposite ends of the body portion. A rotor is in the body portion of the housing and in substantially sealing contact with the end plates. The rotor has at least one channel extending substantially longitudinally from one end of the rotor to the opposite end of the rotor with an opening at each end. The channels of the rotor are positioned in the rotor for alternate hydraulic communication with 1) high pressure liquid and 2) low pressure liquid, in order to transfer pressure between the high pressure liquid and the low pressure liquid. Because of the high pressures and the high angular velocities, this is a highly cavitation prone structure, In order to prevent cavitation, there are one or more grooves in one or both of the end plates.

Abstract: A storage vessel is filled with compressed gas by filling a first tank with gas from a low pressure gas source. Hydraulic fluid is drawn from a reservoir and pumped into the first tank in contact with the gas. This causes the gas in the first tank to flow into the storage vessel as it fills with hydraulic fluid. At the same time, gas is supplied from the gas source to a second tank. Hydraulic fluid previously introduced into the second tank flows out to the reservoir as the second tank fills with gas. When the first tank is full of hydraulic fluid, a valve switches the cycle so that the hydraulic pump begins pumping hydraulic fluid back into the second tank while the first tank drains. The cycle is repeated until the storage vessel is filled with gas to a desired pressure.

Abstract: A duct is provided having a flattened portion containing a liquid slug of gallium, and a magnetic field is passed through the gallium while an alternating current is also passed through the gallium to produce back and forth motion of the liquid gallium slug in step with the alternating current, enabling compression of working fluid within the duct.

Abstract: A method for fighting fire uses a source of fire-extinguishing liquid, a source of gas at an available pressure, and interconnected hydraulic accumulators including at least one gas container and at least one liquid container. The hydraulic accumulators are charged by interconnecting the hydraulic accumulators into fluid communication with each other, initially filling the hydraulic accumulators with the gas at the available pressure from the source of the gas, and subsequently filling the liquid container with the fire-extinguishing liquid from the source of the fire-extinguishing liquid so that the fire-extinguishing liquid drives the gas from the liquid container into the gas container and compresses the gas in the gas container to a desired initial charging pressure and directs the fire-extinguishing liquid toward the fire upon occurrence of the fire. For the directing the gas presses the fire-extinguishing liquid out of the liquid container at the charging pressure toward the fire.

Abstract: The apparatus of the present invention contains at least one pressure vessel having a separator defining two chambers within each pressure vessel. The separator slideably seals the two chambers. Feedstock is placed within a second chamber adjoining the first chamber via a feedstock pump operating in a high volume low head mode. A pressurizer operates in a low volume high pressure mode to pressurize the working fluid and the feedstock in the pressure vessels to a process operating pressure. A circulating pump operates in a high volume, low head mode to circulate feedstock through the process. A fourth pump is used for moving feedstock and product at a pressure below the process operating pressure.

Abstract: A process is disclosed, for pumping a multi-phase gas-liquid mixture by using a pump as the thrusting machine, and at least two pumping vessels alternatively performing functions of intake and functions of compression/delivery.

Abstract: Arrangement for feeding water into a reservoir located at a level above that of the ocean by utilising energy produced by the movement of waves thereof. An air cushion-forming portion of a first chamber communicates with an air cushion-forming portion of a second chamber. Water is supplied to the second chamber via an intake pipe and associated back pressure valves plus adjacent rising pipe. As a result of equivalent pressure variations in the first and second air cushion-forming portions caused by movement of the waves, water is lifted from the second chamber in a pipe via additional back pressure valves along with a further rising pipe plus pump to a higher lying, third chamber and from there to the reservoir.

Abstract: A compressor utilizes a fluid piston to achieve high volumetric efficiency and produce moisture-free, clean, compressed fluid. The compressor has two hollow chambers which are interconnected by a conduit system having a pump located in it. The compressor contains a sufficient volume of noncompressible transfer fluid to completely fill one of the cylinders and the conduit system. A switching system causes the pump to pump the transfer fluid into a first chamber until that chamber is completely filled and then pump the transfer fluid out of the first chamber and into the second chamber. When the second chamber is completely filled the switching system again causes the direction the transfer fluid is being pumped to reverse and the cycle is repeated.

Abstract: A vertical hydro-hoist for conveying a slurry under pressure by using a liquid obtained from a chemical process as a driving liquid and method for operating the same, the hydro-hoist includes at least one feed chamber and a detector for detecting a relationship of specific gravities between a driving liquid, a slurry and a float desporent in the at least one feed chamber. A holding member is provided for holding the float and a device, provided for supplying or discharging a specific gravity adjusting liquid into and out of the float. After temporarily holding the float in the feed chamber, the adjusting liquid is supplied into or discharged out of the float in accordance with the relationship detected by the detector.

Abstract: A part of the driving liquid discharged from an outlet pipe for driving liquid is supplied, under the control of a first flow control means, to a slurry tank in accordance with the amount of the solid matter supplied thereto, so that the concentration of slurry may be kept at all times to be constant. Further, a clean liquid is supplied, under the control of a second flow control means, in accordance with the amount of driving liquid supplied to the slurry tank.

Abstract: Slurry consisting of water and solid material is fed to fill a plurality of supply chambers arranged in parallel to each other, by the action of slurry pump. The filled slurry is forced to a transferring pipe by the liquid pressure of a high pressure driving liquid pump. A float is positioned on an interface between the slurry and driving liquid within the supply chamber. When a sensor for detecting the position of the float is inoperative due to an external turbulence or the like, a command signal is applied to selected valves in response to a period of time set in a timer.

Abstract: Slurry is transferred to a high pressure region by pushing the slurry from the bottom of a transfer vessel with a pressurizing liquid admitted into the top of the vessel. While the pressurizing liquid is being introduced into the transfer vessel, pressurizing liquid which has mixed with slurry is drawn off from the transfer vessel at a point between its upper and lower ends.

Abstract: A valve arrangement for venting conduits in pumping systems having several pumping units for delivering a gas or vapor generating liquid includes a double-seat valve in which the valving element moves between two extreme closing positions and an intermediate position in which the venting conduit is momentarily open; as the venting conduit is connected at one end with the gas collecting zone in one pumping unit and at the opposite end with the liquid discharging zone below the delivery valve so that the double seat valve is automatically controlled by the pressure difference resulting due to different operational phases of the pumping system.

Abstract: Slurry consisting of water and solid matters are charged into a plurality of vessels by means of a low-pressure slurry pump, and is discharged into a transfer pipe by fluid pressure generated by a high-pressure driving liquid pump. A float member is positioned at the border of the slurry and the driving liquid in each vessel. Any failure taking place in the apparatus is displaced or informed on the basis of the period of time taken by each float member moving between the upper and lower limit positions or the number of movements.

Abstract: The specification discloses a gas compressor incorporating a rotating wheel with cavities therein, the cavities transferring gas into a chamber of elevated pressure while simultaneously using the cavities to transfer a liquid out of that chamber.

Abstract: A system for pumping an abrasive or corrosive fluid at high pressure and with a variable delivery rate. The system comprises raising the pressure in a non-corrosive and non-abrasive liquid in a pressure raising means comprising pump means and at least two intermediate cylinders containing floating pistons. The pressure is transferred to the abrasive or corrosive fluid in pressure transfer vessels. A valve arrangement controls the flow of non-abrasive and non-corrosive liquid to the intermediate cylinders and return means are provided for returning the floating pistons after each stroke. The valve arrangement is controlled in dependence on the positions of the floating pistons in their intermediate cylinders.The system is particularly useful for supplying clay slurry to a high pressure plate filter press.

Abstract: An arrangement for hydraulically conveying solids of different specific weights in form of slurries has at least two elongated chambers the effective length of each of which may be varied in dependence on the specific weight of the solid component of the slurry supplied to the respective chambers. The slurry is cyclically fed into the chambers at substantially atmospheric pressure, and when the respective chamber is full pressurized hydraulic fluid, such as water, is utilized for discharging the slurry from the full chamber into a discharge conduit. The arrangement includes a device which measures the specific weight of the solid component and varies the length of the respective chamber in dependence on the measured specific weight. A plurality of valves controls the admission of the slurry and of the pressurized hydraulic fluid into the respective chambers so that, when one of the chambers is being filled with slurry, another chamber is discharged into the discharge conduit.

Abstract: With a slurry continuous pressure-feeding apparatus wherein normally three feed chambers alternatively operate to continuously pressure-feed the slurry, in the case of continuously pressure-feedingthe surry by using two feed chambers, the same amount of slurry as in the case of three feed chambers can be pressure-fed by operating an auxiliary slurry pump installed in parallel with a slurry pump. Some portions of piping systems maintained with the feed chambers are formed with bending pipes which absorb expansion or contraction of the piping systems due to thermal expansion of the piping systems and the fluidic pressure of a fluid flowing through the interiors of the pipes. A float formed in the form of a cylindrical body closely attachingly provided at both upper and lower ends thereof with bowl-shaped end plates, is inserted into the respective feed chambers.

Abstract: One liquid is pumped to a higher elevation by another liquid. In a first stage, the pumping liquid is withdrawn from a chamber and the liquid to be pumped is thereby raised and drawn into the chamber by a siphon effect. In a second stage, the pumped liquid is forced out of the chamber and to a higher elevation by re-entry of the pumping liquid into the chamber.

Abstract: A pressure exchanger for the transfer of pressure energy from a high pressure fluid stream to a lower pressure fluid stream wherein a generally cylindrical housing contains a rotor having a plurality of channels extending axially therethrough and a pair of end covers which slidingly and sealingly interface with respective end faces of the rotor. The end covers are supported against deformation by high pressure upon the end covers in an inward direction, as by exerting a balancing comparable outward axial force upon inward surfaces of the end covers through the employment of pressure-balancing chambers that are in communication with a high pressure fluid region at one end cover.