Hydraulic control valves are widely used in industrial production, agricultural equipment, construction machinery, and other large power equipment for controlling the pressure flow of fluids hydraulic systems. The driving method has a significant impact on response accuracy valves. This paper reviews methods spools from five aspects: solenoid drive, material expansion motor valve another drive....

sures experienced by a pipeline can be either beneficial or detrimental from an operational performance perspective, depending on the amount, the two phase regime of the mixture (whether homogeneous or slug) and the nature and cause of the transient. It is generally held that when free (undissolved) air, or gas, is present in a hydraulic system, it can greatly reduce the surge pressure levels b...

In this paper, we investigated the technical problem of recovery overlength and heavy load conveying booms self-unloading ships. A method folding boom with a hydraulic-four-bar mechanism is presented, by using mathematical model for optimization velocity stationary ADAMS software, data results were obtained. The multi-objective index introduced, discussed. showed that parameters such as angular...

Purpose. To study hydraulic losses in pumping units during and transportation of liquids, to develop the design technology solutions improve energy efficiency centrifugal pumps mining oil-producing industries. Methodology. In theoretical experimental analysis hydraulics methods were used. Findings. As a result research carried out, new scheme multistage pump has been developed, providing coaxia...

The paper considers the technological scheme of hydraulic elevator installation, according to which water from a pressure tank is supplied by working pump well through two parallel pipelines: monitor with washing nozzle for destroying sand plug and supply pipeline that connected containing suction pipelines taking slurry cleaning single- double-column wells plugs methodology calculation selecti...

The US Army uses MIL-PRF-2104 SAE 10 hydraulic fluid in its construction and material handling equipment. This oil meets basic performance requirements but has not been optimized for system efficiency. Hydraulic efficiency is important because fuel transportation unique costs dangers military applications. Two energy efficient fluids were compared to dynamometer testing. higher reduced internal...