Abstract: Methods and systems are provided to adaptively control a hydraulic fluid supply to supply a driving fluid for applying a driving force on a piston in a gas compressor, the driving force being cyclically reversed between a first direction and a second direction to cause the piston to reciprocate in strokes. During a first stroke of the piston, a speed of the piston, a temperature of the driving fluid, and a load pressure applied to the piston is monitored. Reversal of the driving force after the first stroke is controlled based on the speed, load pressure, and temperature.

Abstract: Systems are provided comprising at least one driving cylinder comprising a driving chamber and a driving piston within the driving chamber. The driving piston separates the driving chamber into a driving fluid zone for receiving a driving fluid and a buffer zone for receiving a buffer fluid. The driving piston is movable in the driving chamber by the driving fluid. The systems may also comprise a driven cylinder comprising a driven chamber and a driven piston moveable in the driven chamber. The driven piston is connected to and driven by the driving piston to move within the driven chamber. The driven chamber comprises an input port configured to receive a driven fluid at a first, lower pressure into the driven chamber and an output port configured to expel the driven fluid at a second, higher pressure from the driven chamber when the driven fluid is pressurized by the driven piston.

Abstract: A reversing valve for a hydraulic piston pump, including a pilot valve and a main valve. The pilot valve includes a pilot valve seat, a hollow valve core and a pull rod. The main valve comprises an upper valve seat, a lower valve seat and a main valve core. When the hollow valve core is at a upper position, the control flow passage communicates with the spent fluid flow passage, and the main valve core is at a lower position, so the power piston is driven to move downwardly by the power fluids provided by the main valve. When the hollow valve core is at a lower position, the power fluid controls the main valve core to be seated at the upper position, and the power piston is driven to move upwardly by the power fluids provided by the pilot valve.

Abstract: Overheating of a process liquid retained in a reservoir of a multiphase pump during extended gas slugs is avoided by circulating a cooling liquid in thermal contact with a process liquid through an external cooling apparatus, which can include a heat exchanger. In some embodiments, process liquid from the reservoir is circulated through the cooling loop, while in other embodiments a separate cooling liquid is circulated between a reservoir heat exchanger and the external cooling apparatus. The liquid in the cooling loop can be circulated by a separate cooling pump, or process liquid can be circulated through the cooling loop due to a pressure differential between an inlet and an outlet of the cooling loop within the multiphase pump. The multiphase pump can be a twin screw pump, and the reservoir can be formed between outer and inner casings of the multiphase pump.

Abstract: The present disclosure relates to chemical synthesis. Various embodiments of the teachings thereof may include the synthesis of methanol, generated from hydrogen and a carbonaceous gas. For example, a method may include: compressing gaseous starting materials to an operating pressure of at least 200 bar; supplying the starting materials to a synthesis reactor; removing a product mixture from the synthesis reactor in a liquid state; withdrawing mechanical energy from the product mixture by reducing a pressure of the product mixture; and using the mechanical energy to compress the gaseous starting materials.

Abstract: Methods and systems are provided to adaptively control a hydraulic fluid supply to supply a driving fluid for applying a driving force on a piston in a gas compressor, the driving force being cyclically reversed between a first direction and a second direction to cause the piston to reciprocate in strokes. During a first stroke of the piston, a speed of the piston, a temperature of the driving fluid, and a load pressure applied to the piston is monitored. Reversal of the driving force after the first stroke is controlled based on the speed, load pressure, and temperature.

Abstract: A spherical expansion compressor adapted to variable working conditions with a spherical inner chamber, comprises a rolling rotor compressor used as first-stage compression, compression working chambers, expansion working chambers, a gas tank and a pressure control circuit. The pressure control circuit is between the gas tank and a pressure-controlled inlet valve of the rolling rotor compressor, and controls the inlet valve to open/close according to pressure in the gas tank and maintains constant pressure in the tank. A working medium after first-stage compression enters the gas tank, where the pressure control circuit regulates the gas tank pressure. The working medium enters second-stage compression, and expands in the expansion-stage, forming the spherical expansion compressor adapted to variable working conditions.

Abstract: The present invention provides a technology for downsizing fluid pressure equipment including a fluid pressure pump and a radiator. The hydraulic pump unit 3 includes: a hydraulic pump 4; a motor 5 which drives the hydraulic pump 4; a cooling fan 7 which is connected to an output shaft 5a of the motor 5 and generates a flow of cooling air 6 to cool the motor 5; and a radiator 8 which receives heat from the hydraulic oil. The motor 5 and the radiator 8 are overlapped with the cooling fan 7, when viewed from the axial direction of the output shaft 5a of the motor 5.

Abstract: A pump jack system for reciprocating a pump rod string is made up of a base frame and piston drive cylinders mounted on the base frame with the upper end of the pump rod connected to the cylinder assemblies, the cylinder assemblies being operated in unison by a fluid control circuit communicating with inner and outer concentric fluid passages, and the pump rod string is counterbalanced by a fluid circuit which supplies pressure in an upward direction to each of the pistons on each upstroke and substantially reduces the pressure on each downstroke, the fluid circuit being selected from an inert gas alone or an inert gas pressurizing a hydraulic fluid.

Abstract: Devices and methods of use of such devices for pumping fluid and for use in surgical procedures preferably include vacuum-driven pumps for providing irrigation and suction functions to the surgical field. Such pumps may be freestanding, external to or integrated into handpieces of the surgical instruments.

Abstract: A reverse osmosis or filtration system uses one or more hydraulic intensifiers (integrated motor and pump) to provide all the high pressure fluid to a semi-permeable membrane or filter, the intensifier being powered by the high pressure flushing flow leaving the membrane or filter uses, and by a pressurized inlet flow of fluid to be purified or filtered.

Abstract: An air blower assembly for use with spas having a blower-and-motor unit snugly mounted inside an intake housing using a pair of ring-shaped elastomeric gaskets. An outlet housing having a smaller diameter than the intake housing but larger than the motor portion of the blower-and-motor unit, is telescopically positioned inside the intake housing and around the motor portion of the blower-and-motor unit to doubly enclose the motor portion. A muffler, having a muffler inlet port leading directly to a concave air dam, covers an air inlet port on the intake housing to block a straight-line path to the air inlet port.

Abstract: A hydraulic pump jack drive system for reciprocating an oil well pump rod. The drive system comprises at least one hydraulic well head cylinder, a reversible flow hydraulic pump, and a master cylinder. The master cylinder has a free floating master piston and at least one fixed bulkhead. The master cylinder also has a working fluid chamber hydraulically connected to the hydraulic well head cylinder and at least two master piston drive chambers hydraulically connected to the hydraulic pump. The hydraulic well head cylinder and the working fluid chamber are filled with a working fluid and define a working fluid system while the master piston drive chambers and the hydraulic pump are filled with hydraulic fluid and define a hydraulic drive system. Reversing the flow of the hydraulic pump causes the master piston drive chambers to be pressurized and de-pressurized on an alternating basis to reciprocally move the master piston within the master cylinder.

Abstract: Apparatuses are described for cooling the rotors of, improving the sealing of, and improving the power efficiency of twin-screw pumps. Such methods include (1) injecting liquid onto the rotor and into the rotor chambers at the point of greatest temperature accumulation, (2) implanting a heat transfer device within the rotor enclosure that can transfer heat outside of the rotor enclosure, and (3) injecting liquid into rotor chambers via energy recovery devices which reduce the total power consumption of the system.

Abstract: Heat generated at heat generating components is efficiently transported to a wall of a metal box serving as a heat dissipation section to cool the heat generating components even in an apparatus, in which box the heat generating components together with other components are mounted. The heat generating components and the heat dissipation section are connected to each other through a thermal transport device having a flexible structure. The heat generating components and the box are readily connected to each other irrespective of the arrangement of components, and heat is efficiently transported by driving the liquid. In the heat dissipation section, because the heat generating components and the wall of the metal box are thermally connected to each other, a high heat dissipation capacity is obtained as heat is diffused extensively into the wall due to a high thermal conductivity of the metal box.

Abstract: This invention relates to an accurate mechanical proportioning pump and/or mixing device that is adaptable for industrial, commercial and consumer use that incorporates a series of piston-seal-cylinder configuration with necessary check valves and seats that automatically proportionally pumps and/or mixes such fluids as soaps, fruit concentrates, food syrups, pesticides, herbicides, fungicides and fertilizers based on various other fluid driving mediums with a high degree of accuracy of controlled fluid to driving mediums.

Abstract: An additive injection pump has a rolling diaphragm mounted between a reciprocable assembly and a cylinder to create a secondary fluid pumping chamber in the lower end of the cylinder. The reciprocable assembly has an internal one-way flow passage between the pumping chamber and an opposite end portion of the assembly having an outlet. The selective positioning of a valve member at the bottom of the reciprocable assembly establishes a predetermined quantity of secondary fluid supplied through an inlet at the bottom of the cylinder. When the cylinder is attached to a housing having a primary fluid stream and the assembly is reciprocated by a fluid motor in the housing, secondary fluid in predetermined doses is injected into the primary fluid stream.

Abstract: This invention relates to a pumping device that is adaptable for commercial and residential use that incorporates a series of pistons and valves that automatically and proportionally injects such fluids as fertilizers, oils, soaps and food syrups into various other liquid mediums.

Abstract: The present invention is directed to pump apparatus for purifying water. The apparatus includes a housing containing a reciprocating plunger pump with a permanently attached filtering module preferably containing a reverse osmosis element. A manifold with a hydraulic actuated shuttle which serves as the spool for a three way valve is attached to the pump housing. The valve provides alternate pressurization and exhaust for the rod side of the piston. The pump may be operated by a hand lever or by power mechanism.

Abstract: A liquid elevating mechanism for use with pumps of the type which produce cyclic pressure waves for transmission through a liquid column to the liquid elevating mechanism for operation thereof. The liquid elevating mechanism is especially configured to utilize the head pressure forces exerted thereon by the liquid column for head pressure counterbalancing purposes.

Abstract: Apparatus and a method for utilizing energy from a high temperature source such as a solar collector to both provide heat energy to a low temperature source such as a body of water and to accomplish mechanical work utilizing a refrigerant motor. The refrigerant motor may be coupled to a pump for circulating refrigerant within a closed loop system such that the apparatus and method requires no power source other than the high temperature source.

Abstract: A deep well hydraulic pump system using a high pressure accumulator, comprises a down hole pump which is lowered on tubing into the borehole and has a large cylinder and piston connected to a small cylinder and piston with a common piston rod. The large cylinder is connected to the surface by a liquid pipe inside of the tubing. A surface motor-driven pump in one part of the pumping cycle takes liquid from which a high pressure accumulates and pumps it at high pressure through the liquid pipe into the large cylinder, forcing the piston down, and forcing well liquid up the tubing. Part of this liquid goes to a sump and part goes through a pressure sensitive valve to storage. In the second part of the cycle the surface pump draws from the sump and pumps liquid down the tubing. This raises the piston in the large cylinder and lifts liquid through the foot valve into the small cylinder, ready for the next repetition of the two-part cycle.

Abstract: A method of and device for delivering measured quantities of liquid into a fluid in which a pressure differential is created in a fluid flow line and fluid is passed from the higher pressure side to a positive displacement fluid pump and returned therefrom to the lower pressure side and including a positive displacement liquid pump actuated from the fluid pump which feeds liquid to the fluid pump to mingle with the fluid passing back to the fluid flow line.

Abstract: A liquid propellant gun utilizes a differential piston having a plurality of bores through its head, which head divides the liquid propellant pumping chamber from the combustion chamber, and propellant supply means providing liquid propellant under pressure into said pumping chamber, which propellant under pressure both advances the piston to enlarge the pumping chamber and to decrease the combustion chamber and injects and atomizes a predetermined quantity of propellant through said bores from said pumping chamber into said combustion chamber, and a check valve which precludes flow of liquid propellant under pressure from said piston to said propellant supply means and damps said piston at the end of its combustion stroke.

Abstract: A deep well pump system incorporating a sub-surface pump unit and a surface power unit with a fluid column formed therebetween. The pump unit incorporates a counterbalance means that is specifically illustrated as a collapsible volume chamber operably engaged with a pump piston to cause a fluid pumping linear movement of the piston responsive to the selective contraction and expansion of the collapsible volume chamber. The power unit, in the charging stroke thereof, pressurizes the fluid column by the introduction of a volume therein sufficient to contract the collapsible volume chamber, with a subsequent pressure buildup effecting discharge of additional fluid from the power unit with less valving than the prior art pumps.

Abstract: An automatic proportioner for supplying medication to automatic watering troughs in poultry yards, comprises a differential piston unit movable in a stepped casing with the small piston acting as pump and the larger piston as actuator. A tubular valve movable coaxially with the piston unit serves to admit line water under pressure into the intermediate cylinder space for the upward stroke, whereby a concentrated medicated solution is sucked from a vessel into the suction side of the pump. During the downward stroke the valve interrupts the water supply from the line and the large piston is driven in downward direction by water from a raised storage tank, whereby the solution is driven into the intermediate space, mixed with the line water remaining therein in the proportion of the respective cylinder volumes and expelled to the troughs, at a pressure defined by the water level in the raised storage tank.

Abstract: The present invention is directed to pump apparatus for purifying water. The apparatus includes a housing containing a reciprocating plunger pump with a permanently attached filtering module preferably containing a reverse osmosis element. A manifold with a hydraulic actuated shuttle which serves as the spool for a three way valve is attached to the pump housing. The valve provides alternate pressurization and exhaust for the rod side of the piston. The pump may be operated by a hand lever or by power mechanism.