Abstract: A system includes a hydraulic fracturing system including a hydraulic energy transfer system configured to exchange pressures between a first fluid and a second fluid. The hydraulic fracturing system also includes a common manifold including one or more high pressure manifolds and one or more low pressure manifolds. The one or more high pressure manifolds and the one or more low pressure manifolds are coupled to the hydraulic energy transfer system.

Abstract: A system and method of operating the same includes a first fluid cylinder having a first process fluid end and a first drive fluid end. The first cylinder comprising a first process fluid inlet port and a first process fluid outlet port disposed at the first process fluid end of the first fluid cylinder and first drive fluid inlet port and a first drive fluid outlet port disposed at the first fluid end of the first fluid cylinder. The first fluid cylinder is oriented vertically. A first liquid fluid interface is disposed between the first process fluid end and the first drive fluid end to divide the first fluid cylinder into a first process fluid portion and a first drive fluid portion. A first pump pumps drive fluid to the drive fluid portion to drive the fluid interface to pressurize the process fluid.

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: 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 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 gas compressor with at least three hydraulic cylinders is connected to a source of natural gas by a gas line. The gas line can also be removably attached to a storage tank. A hydraulic system is also connected to the cylinders. The compressor additionally includes pressure controls which allow the pistons in the hydraulic cylinders to complete the compression stroke in a staged manner. The cylinders are thereby sequentially emptied of gas. Gas at a sufficient initial pressure, entering the cylinders at the completion of the compression cycle, drives the return stroke of the pistons. A pressure switch controls the pressure level of the compressed gas, and aborts the compression cycle when a predetermined pressure in the storage tank has been reached.

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: Slurry consisting of water and solid material is fed to a plurality of supply chambers arranged in parallel to each other by a low pressure slurry pump, and the filled slurry is transferred to a transferring pipe under liquid pressure of a high pressure driving liquid pump. Also, to the upper and lower portions of the supply chambers are connected driving liquid supply/discharge pipes and slurry supply/discharge pipes having valves. The valves are selectively opened/closed in accordance with a detection of a float position within each supply chamber to thereby feed the slurry continuously under pressure. Upon the slurry pressure feeding, the valves connected to the supply chamber lower portion are prevented from closing due to a packing condition.

Abstract: The present invention relates to a method and to systems which can be used to recover waste heat available in the form of low pressure steam by compressing such steam in a compression system of the liquid piston type to provide steam of a higher pressure. The higher pressure steam can then be more advantageously used in industrial processes.

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 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: 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 apparatus including at least one horizontal feed pipe from which a mixture of liquid and particulate solid material to be transported is discharged into a high-pressure transport pipe by the action of a driving liquid delivered through a vertical pipe connected to the horizontal feed pipe to apply pressure to the mixture in the horizontal feed pipe through an intermediate liquid having a specific gravity lower than that of the mixture and higher than that of the driving liquid. Prior to initiation of an operation, the horizontal feed pipe and a lower portion of the vertical pipe below a float mounted therein are charged with the intermediate liquid and an upper portion of the vertical pipe above the float is charged with the driving liquid. Upon the mixture being delivered by a low-pressure mixture pump to the horizontal feed pipe, the intermediate liquid flows into the vertical pipe and raises the level of the float to return the driving liquid from the vertical pipe to its tank.

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.