Results 11 to 20 of about 96,883 (287)

A study on stabilization of operation time for hydraulic operating circuit breaker (Development of hydraulic stabilization system holding constant high pressure)

open access: yesNihon Kikai Gakkai ronbunshu, 2015
A hydraulic operation stabilizing system was developed for a hydraulic operating mechanism of a gas circuit breaker (GCB). Air bubbles and cavities, created in hydraulic fluid by the movement of the operating mechanism, have an effect on the movement of ...
Tohru YAMASHITA   +4 more
doaj   +3 more sources

A study on stabilization of operation time for hydraulic operating circuit breaker (Simulation and investigation of hydraulic stabilization system holding constant high pressure)

open access: yesNihon Kikai Gakkai ronbunshu, 2015
Numerical simulation for a hydraulic operation stabilizing system of gas circuit breaker (GCB) driven by a hydraulic operating mechanism is treated . Valve collision and hydraulic column separation, created in hydraulic fluid by the movement of valves ...
Tohru YAMASHITA   +4 more
doaj   +3 more sources

Experimental tests of the operating conditions of a micro gas turbine device [PDF]

open access: yes, 2015
The aim of this work is to analyze the performance of a commercial micro gas turbine, focusing on the analysis of the fuel consumption and the outlet compressor and turbine temperature at various rpm, and to evaluate and compare the efficiency of the ...
CAPATA, Roberto
core   +1 more source

Hydraulic dissection technique during endoscopic sinus surgery using a novel balloon sinus dilation device

open access: yesLaryngoscope Investigative Otolaryngology, 2021
Background More than a decade after its introduction, some rhinologic surgeons have incorporated the technique of balloon sinus dilation (BSD) technology into “hybrid” endoscopic sinus surgery (ESS) procedures. A novel BSD device which can be placed over
Isaac L. Schmale   +2 more
doaj   +1 more source

Evaluating the relationship of parameters hydraulic impact device and its drive [PDF]

open access: yesНаучно-технический вестник Брянского государственного университета, 2020
The article deals with some questions about the influence of drive parameters on the characteristics of hydraulic shock devices, noted during the analysis of the results of mathematical modeling. Using mathematical modeling, numerical experiments were
Volkov N.N.   +4 more
doaj   +1 more source

Investigation on braking characteristics of dashpot for hydraulic operating circuit breaker

open access: yesNihon Kikai Gakkai ronbunshu, 2016
Braking characteristics of piston-dashpot system in a hydraulic operating device for circuit breaker was investigated by the measurement and numerical analysis.
Tohru YAMASHITA   +3 more
doaj   +1 more source

Simulation of the hydraulic system of a device with self-adaptation for power and kinematic parameters on the working body

open access: yesAdvanced Engineering Research, 2021
Introduction. Currently, Russia has adopted a course towards the creation of intelligent machines and equipment. The same holds for mobile technological machines for road construction and public utilities.
T. A. Khinikadze   +2 more
doaj   +1 more source

A hydraulic simulation-optimization model of the joint operation of multiple devices in long-distance water diversion systems under the pumps shutdown process using a parallel NSGA-II approach

open access: yesWater Supply, 2022
Abstract The operation of a long-distance water diversion system in the transient process is a rather complicated problem requiring the joint operation of multiple devices. In this study, the joint operation of multiple hydraulic devices in the pumps shutdown process is expressed as a multi-objective optimization problem, and the ...
Xiaolian Liu   +4 more
openaire   +2 more sources

A Model for Selecting the Most Cost-Effective Pressure Control Device for More Sustainable Water Supply Networks [PDF]

open access: yes, 2019
Pressure Reducing Valves (PRV) have been widely used as a device to control pressure at nodes in water distribution networks and thus reduce leakages. However, an energy dissipation takes place during PRV operation.
Fernández García, I.   +2 more
core   +1 more source

Hydraulic Device for Simulation of Pressure Shocks

open access: yesActa Technologica Agriculturae, 2014
This work is focused on the design of a hydraulic device on which simulations of pressure shocks can be performed. The hydraulic device was constructed to allow simulations of pressure shocks transferred directly in operating conditions because ...
Lindák Stanislav   +4 more
doaj   +1 more source

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