A pressure exchanger with a valve system includes a cylinder barrel (1), two valve plates (2) and two port plates (3, 4), wherein the cylinder barrel (1) has at least one cylinder (7) which accommodates a piston (8). The objective is to provide a pressure exchanger with low wear and a low maintenance effort. This objective is solved by a pressure exchanger including a piston (8) braking system and that the piston (8) includes a pressure relief arrangement.

Provided is an intensifier capable of cleaning a portion where pressurized raw material adheres without disassembling the inside. The intensifier for pressurizing raw material using medium supplied from a driving pump including: a low-pressure cylinder to which the medium is supplied; a high-pressure cylinder fixed to the low-pressure cylinder; a piston that slides inside the low-pressure cylinder and the high-pressure cylinder by the medium supplied to the low-pressure cylinder; a bottom adapter that pivotally supports the piston; and a resin portion disposed on an inner periphery of the bottom adapter.

A method operates a construction material and/or viscous-material pump having: at least one conveying cylinder, the conveying cylinder being designed to receive and discharge construction material and/or viscous material; and at least one conveying piston, the conveying piston being disposed in the conveying cylinder for movement in order to draw construction material and/or viscous material into the conveying cylinder and to displace drawn-in construction material and/or viscous material out of the conveying cylinder. The method includes: conveying construction material and/or viscous material, by movement of the conveying piston in order to draw in and displace construction material and/or viscous material; sensing a position variable during the movement, the position variable characterizing a position of the conveying piston along its stroke in the conveying cylinder; sensing a conveying variable during the movement, the conveying variable being of a different type than the position variable and characterizing the conveying of construction material and/or viscous material by the pump; and determining a profile of a subsequent movement of the conveying piston by linking the sensed position variable and the sensed conveying variable to each other; and controlling the subsequent movement in accordance with the determined profile.

The invention relates to a pressure reduction unit for use in processing equipment handling high pressure fluid, where the pressure reduction unit comprises at least one inlet and an outlet, the pressure reduction unit being adapted to receive a pressurized fluid at process pressure level at the inlet, being adapted to isolate the received pressurized fluid from the upstream process and from the outlet and being adapted to reduce the pressure of the fluid to a lower predetermined level and further being adapted to output the fluid through the outlet while still isolated towards the upstream process.

A switching device for switching a hydraulic flow of a concrete pump, comprising a first connection component for connection to a hydraulic pump; a second connection component for connection to a drive cylinder; and a distribution unit which is arranged between the first and second connection components, wherein the first connection component has two fluid guides and the second connection component has a first fluid-guide pair and a second fluid-guide pair, and the distribution unit can be transferred reversibly between a first position, in which the fluid guides of the first connection component are connected fluidically to the first fluid-guide pair of the second connection component, and a second position, in which the fluid guides of the first connection component are connected fluidically to the second fluid-guide pair of the second connection component.

A thick matter pump includes a hydraulically-driven two-cylinder piston-pump configured to generate a thick matter delivery pressure. The thick matter pump also includes a hydraulic pump configured to apply hydraulic fluid to the two-cylinder piston-pump via a drive line. The hydraulic pump includes a pressure regulator that is adjustable to a target value of pressure of the hydraulic fluid for limiting the thick matter delivery pressure, and the thick matter delivery pressure is adjustably limited. The pressure of the hydraulic fluid is limited in the drive line, via an adjustable pressure-limiting valve, to an adjustable maximum pressure. The target pressure of the pressure regulator and the maximum pressure of the hydraulic fluid are adjustable through a joint adjusting element.

A method for high fluid shear processing of a fluid uses an isolator that has a first sub-chamber for containing a first fluid and a second sub-chamber for containing a second fluid defined by a separator positioned in the chamber and movable between a first end of the chamber and a second end of the chamber. The two sub-chambers are in pressure communication with each other but are not in fluid communication with each other. A first fluid is pumped at an ultrahigh pressure into the first-sub chamber, and the pressure in the first sub-chamber causes a second fluid to be processed to be discharged from the second sub-chamber into a processing valve. A system is also provided for performing the steps of this method.

An automatically controlled hydraulic fracturing pump system includes a hydraulic cylinder controlled via a hydraulic circuit; a sensor in communication with the hydraulic circuit; and a control module in data communication with the sensor. The control module has a memory storing computer-readable instructions; and a processor configured to execute said instructions to: (1) determine, via the sensor, an attribute about the hydraulic cylinder; (2) determine an attribute about the hydraulic fracturing pump system; (3) determine a value for correcting movement of the hydraulic cylinder; and (4) send a signal to the hydraulic circuit to adjust movement of the hydraulic cylinder.

The invention relates to a pressure reduction unit for use in processing equipment handling high pressure fluid, where the pressure reduction unit comprises at least one inlet and an outlet, the pressure reduction unit being adapted to receive a pressurized fluid at process pressure level at the inlet, being adapted to isolate the received pressurized fluid from the upstream process and from the outlet and being adapted to reduce the pressure of the fluid to a lower predetermined level and further being adapted to output the fluid through the outlet while still isolated towards the upstream process.

A thick matter pump includes a hydraulically-driven two-cylinder piston-pump configured to generate a thick matter delivery pressure. The thick matter pump also includes a hydraulic pump configured to apply hydraulic fluid to the two-cylinder piston-pump via a drive line. The hydraulic pump includes a pressure regulator that is adjustable to a target value of pressure of the hydraulic fluid for limiting the thick matter delivery pressure, and the thick matter delivery pressure is adjustably limited. The pressure of the hydraulic fluid is limited in the drive line, via an adjustable pressure-limiting valve, to an adjustable maximum pressure. The target pressure of the pressure regulator and the maximum pressure of the hydraulic fluid are adjustable through a joint adjusting element.