Aspects of the disclosure relate to pumping systems, apparatus, end related methods for longer strong lengths and reduced footprints. In one aspect, pumping systems facilitate increased horsepower generated at lower cycle rates and a lesser number of pumps. In one implementation, a pump system comprises a hydraulic power end coupled to and located in between a first fluid end and a second fluid end. The hydraulic power end comprises a hydraulic cylinder assembly having a piston, a first rod coupled to the piston and to the first fluid end, and a second rod coupled to the piston and to the second fluid end located on the opposite side.

A fuel power transfer system for an engine may include a cryogenic fuel supply, a fuel pump in fluid communication with the cryogenic fuel supply, a multi-position valve in fluid communication with the fuel pump and a combustion chamber of the engine, a fuel turbine operatively coupled to the fuel pump and having a primary discharge port in fluid communication with the combustion chamber, a primary heat exchanger in fluid communication between the multi-position valve and the fuel turbine, and a gearbox operatively coupled to the fuel turbine and the fuel pump and configured to transfer power from the fuel turbine to the engine.

A fuel power transfer system for an engine may include a cryogenic fuel supply, a fuel pump in fluid communication with the cryogenic fuel supply, a multi-position valve in fluid communication with the fuel pump and a combustion chamber of the engine, a fuel turbine operatively coupled to the fuel pump and having a primary discharge port in fluid communication with the combustion chamber, a primary heat exchanger in fluid communication between the multi-position valve and the fuel turbine, and a gearbox operatively coupled to the fuel turbine and the fuel pump and configured to transfer power from the fuel turbine to the engine.

An ultra-high pressure pump (10) adapted to supply a constant flow of very high-pressure water for the cutting apparatuses of a water-jet and abrasive processing machine, comprising a control unit (15) consisting of a hydraulic pump (15′) connected to a servomotor (15″), a hydraulic switching and compensation unit (16) comprising at least one progressive opening cartridge (16′) and at least one high-speed solenoid valve (16″), a hydraulic accumulator (16′″), a pressure control device (17) and an attenuator unit (18) cooperating with a pressure intensifier unit (14) supplied by means of a low-pressure water circuit (23).

A pumpable resin system for installation of mine bolts includes a resin injection cylinder comprising a resin chamber and a resin hydraulic cylinder, a catalyst injection cylinder including a catalyst chamber and a catalyst hydraulic cylinder, with the resin hydraulic cylinder synchronized with the catalyst hydraulic cylinder, a hydraulic pump in fluid communication with the resin hydraulic cylinder and the catalyst hydraulic cylinder, a hydraulic reservoir in fluid communication with the hydraulic pump, and a delivery line in fluid communication with the resin injection cylinder and the catalyst injection cylinder. The delivery line is configured to deliver resin and catalyst from the resin injection cylinder and catalyst injection cylinder into a borehole.

A pumpable resin system for installation of mine bolts includes a resin injection cylinder comprising a resin chamber and a resin hydraulic cylinder, a catalyst injection cylinder including a catalyst chamber and a catalyst hydraulic cylinder, with the resin hydraulic cylinder synchronized with the catalyst hydraulic cylinder, a hydraulic pump in fluid communication with the resin hydraulic cylinder and the catalyst hydraulic cylinder, a hydraulic reservoir in fluid communication with the hydraulic pump, and a delivery line in fluid communication with the resin injection cylinder and the catalyst injection cylinder. The delivery line is configured to deliver resin and catalyst from the resin injection cylinder and catalyst injection cylinder into a borehole.

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. The buffer fluid is different from the driving fluid and the driven fluid, and the buffer fluid in the buffer zone separates the driving fluid from the driven fluid.

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. The buffer fluid is different from the driving fluid and the driven fluid, and the buffer fluid in the buffer zone separates the driving fluid from the driven fluid.

The invention relates to the special configuration of a compression device of a refrigeration system and to its actuation method. The device consists of a pair of dual-action cylinders (8-9) connected together by means of the movable rod (11) thereof, such that the first cylinder (8) acts as an element for compressing coolant fluid, for which purpose the rod is moved through the second cylinder (9), being fed by a pressurised fluid which, by means of a series of branches and valves controlled using limit switches of the rod (11), allow the flow of coolant fluid in the first cylinder and the flow of pressurised fluid of the second cylinder at the outlet of both devices to be constant. Thus, a completely autonomous device that does not need electricity or any type of fuel is obtained.

The invention relates to the special configuration of a compression device of a refrigeration system and to its actuation method. The device consists of a pair of dual-action cylinders (8-9) connected together by means of the movable rod (11) thereof, such that the first cylinder (8) acts as an element for compressing coolant fluid, for which purpose the rod is moved through the second cylinder (9), being fed by a pressurised fluid which, by means of a series of branches and valves controlled using limit switches of the rod (11), allow the flow of coolant fluid in the first cylinder and the flow of pressurised fluid of the second cylinder at the outlet of both devices to be constant. Thus, a completely autonomous device that does not need electricity or any type of fuel is obtained.