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Thematische Bibliographien / CALCULATION OF BASIC PARAMETERS OF HYDRAULIC MOTOR / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „CALCULATION OF BASIC PARAMETERS OF HYDRAULIC MOTOR“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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1

Vorozhtsov, Oleg, and Evgeny Seleznev. "Design and justification of hydrostatic transmission parameters for special transport vehicles." E3S Web of Conferences 431 (2023): 08013. http://dx.doi.org/10.1051/e3sconf/202343108013.

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Traditionally, hydrostatic transmissions of specialised transport vehicles use piston hydraulic machines to move the vehicle, as well as to operate attachment systems and units. For a wide range of special vehicles used in agriculture and municipal services, movement requires the power of the drive motor, comparable to the power of gear hydraulic machines. Gear hydraulic machines are less demanding on the quality, viscosity, and purity of the working fluid, are cheaper, and are easier to operate. Regulation of speed of an output shaft of gear hydraulic motors, as a rule, is provided by the thr

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2

BURIY, Grigoriy Gennadievich, and Ilya Konstantinovich POTERYAEV. "PROGRAM FOR CALCULATION OF PRESSURE LOSS IN HYDRAULIC DRIVE LINES ON THE EXAMPLE OF BULLDOZER LIEBHERR PR 724." Mine Surveying and Subsurface Use, no. 6 (2023): 33–37. http://dx.doi.org/10.56195/20793332_2023_6_33_37.

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The article considers the relevance of the selection of hydraulic drive elements for construction and lifting and transport machines. Currently, hydraulic drive is widely used on construction and lifting machines. The hydraulic drive includes a hydraulic motor, which can be either a hydraulic cylinder or a hydraulic motor. When selecting during operation or during the design of these units, it is important to know the pressure losses in the suction, pressure and drain hydraulic lines. The process of determining these losses is very laborious. Computer programs can be used to automate the proce

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Zhdanovich, Ch I. "Continuously Variable Two-Flow Hydrostatic-Mechanical Transmission of Crawler Tractor." Science & Technique 23, no. 3 (2024): 251–60. http://dx.doi.org/10.21122/2227-1031-2024-23-3-251-260.

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The paper proposes an original design of a continuously variable two-flow hydrostatic-mechanical transmission, which ensures division of the power flow along the sides of the crawler tractor. To ensure stability of rectilinear motion, their volumetric and mechanical efficiency, the maximum pressure of the working fluid in the hydraulic transmission, the maximum speed and torque on the shaft of the hydraulic motor. The parameters of an unregulated hydraulic motor, an adjust-table pump and mechanical transmission elements are selected. A mathematical model of the rectilinear motion of a caterpil

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Lagerev, A.V., V.I. Tarichko, and I.A. Lagerev. "The operation of hydraulic drives with frequency-throttle regulation for mobile rope complexes with the consistent installation of throttles." Nauchno-tekhnicheskiy vestnik Bryanskogo gosudarstvennogo universiteta 6, no. 1 (2020): 73–92. https://doi.org/10.22281/2413-9920-2020-06-01-73-92.

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The article discusses the task of modeling the working hydrodynamic processes occurring in hydraulic drives with frequency-throttle regulation of the mechanisms of movement of traction and load-bearing ropes, at all stages of the movement mechanism - the stage of acceleration of the transported cargo, the stage of steady (stationary) movement with constant speed and the stage of braking when approaching the final breakpoint. As a circuit that implements throttle control, possible hydraulic circuit designs for sequential installation of adjustable throttles relative to the hydraulic motor are c

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Lagerev, Alexander V., Vadim I. Tarichko, and Igor A. Lagerev. "Modeling operation modes of hydraulic drives with frequency-throttle regulation of mobile transport and overloading ropes complexes." Nauchno-tekhnicheskiy vestnik Bryanskogo gosudarstvennogo universiteta 5, no. 4 (2019): 462–80. https://doi.org/10.22281/2413-9920-2019-05-04-462-480.

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<em>Mobile ropeways, the equipment of which is located on the base chassis of wheeled or tracked vehicles of high carrying capacity, are a promising type of transport and overloading equipment. Specific design features, modes and conditions of their operation in comparison with traditional freight and passenger fixed-line cableways require the development of special design methods and design calculations for this type of machine. The article discusses the problem of modeling working hydrodynamic processes in hydraulic drives with frequency-throttle regulation of the mechanisms of movement of t

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Banaszek, Andrzej. "Calculations of Performance Characteristics of Submerged Cargo Pumps with Hydraulic Drive and Constant Torque Controllers, Taking into Account the Energy Efficiency of the Drive Motor." Energies 17, no. 22 (2024): 5592. http://dx.doi.org/10.3390/en17225592.

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Submerged cargo pumps installed on board tankers are one of the most important components of their cargo system. As they are installed directly in the cargo tanks, they are usually equipped with a hydraulic drive whose power and capacity are controlled by constant-torque controllers. These have a significant impact on the technical and performance characteristics of the cargo pumps. This paper presents a methodology for calculating the performance characteristics of submerged cargo pumps, taking into account the energy efficiency of their hydraulic drive motors. Due to their number and power,

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Cao, R., W. C. Guo, Y. Liu, F. L. Wu, and Q. J. Bai. "Numerical simulation of transient processes for pumped-storage power station with fixed and variable speed units." IOP Conference Series: Earth and Environmental Science 1079, no. 1 (2022): 012080. http://dx.doi.org/10.1088/1755-1315/1079/1/012080.

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Abstract The pumped-storage power stations (PSPSs) with variable speed units (VSUs) have been emerging in recent years, and the research on the transient processes of those PSPSs is of great significance. In this paper, the transient processes of a PSPS with four units, i.e. three fixed speed units (FSUs) and one VSU, sharing one tunnel are numerically simulated under the conditions of large fluctuation and small fluctuation. Firstly, combining the calculation method of hydraulic transient processes and the basic equations of pump turbine, doubly-fed induction motor (DFIM) and governor, a hydr

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Shargorodskiy, Serhiy, and Volodymyr Rutkevych. "INFLUENCE OF PHYSICAL AND MECHANICAL PROPERTIES OF STEM FEED AND DESIGN OF THE WORKING BODY ON THE DRIVE POWER OF THE CUTTING MECHANISM." ENGINEERING, ENERGY, TRANSPORT AIC, no. 2(113) (June 29, 2021): 38–49. http://dx.doi.org/10.37128/2520-6168-2021-2-5.

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The paper considers the problem of reducing the drive power of the mechanism for separating stalk feed from trench storages by the batch method by developing and substantiating the parameters and operating modes of the hydraulic drive system. The structure and principle of construction of a system of hydraulic drives of the mechanism for separating a portion of stem feed are proposed. This will significantly reduce the power of the used hydraulic motors by simultaneously controlling the cutting speed of the monolith of stem feed and the feed of the cutting device. The analysis of changes in th

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Luo, Zhi Bin. "Calculation of Interaction Force between Pipe and Water of HVAC." Advanced Materials Research 1046 (October 2014): 165–68. http://dx.doi.org/10.4028/www.scientific.net/amr.1046.165.

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On the basis of the pipe network hydraulic calculation of basic theory, the pipe network utilization, using graph theory and peak array build relationships and storage node and pipe sections between the pipeline node associated with the hydraulic parameters of pipe sections linked together establish a common heating pipe network hydraulic calculation models. Matrix for the model were derived solving ideas based on the finite element method and linearization method for existing node equation method to improve to get a new heating network hydraulic calculation methods common to construct a new i

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Zhao, Zhong Hao, Zeng Liang Li, and Sheng Nan Lu. "The Principle and Calculation of Hydraulic Driven Downhole Twin-Screw Pump." Advanced Materials Research 201-203 (February 2011): 448–53. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.448.

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Structure composition and working principle of hydraulic driven downhole twin-screw pump are firstly introduced, and the calculation method of work and structure parameters when downhole twin-screw pump and turbine motor operate is given, and dynamic measuring process when ground power pump, turbine motor and downhole twin-screw pump coordinate is also given. The given calculation process which is derived after sufficiently considering working principle and structure features of the pump, is instructive to the design of this kind of downhole twin-screw pump, and also provides technical support

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Avrunin, Grigory, Mikhail Podrigalo, Irene Moroz, and Oleksii Koval. "Analysis of the technical level of hydraulic fluid power with motor-wheels." Mechanics and Advanced Technologies 7, no. 2 (98) (2023): 185–92. http://dx.doi.org/10.20535/2521-1943.2023.7.2.277557.

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The analysis of the use of hydraulic fluid power of rotation of hydraulic motor-wheels for tracked and wheeled machines was carried out. The hydraulic principle schemes for the use of high-speed axial-piston hydraulic motors with planetary gearboxes and high-torque low-speed radial-piston hydraulic motors are considered, in particular, hydraulic devices for ensuring reliable movement in the event of obstacles from the road surface. The features of static and dynamic calculation methods using a mathematical model for the numerical solution of differential equations when calculating pressure flu

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Jonkobilov, Ulugmurad, Sobir Jonkobilov, Ulugbek Rajabov, Toshburi Egamnazarov, and Shuhrat Xo’shiyev. "Analytical substantiation of the parameters of the directional air-hydraulic hood." E3S Web of Conferences 264 (2021): 03034. http://dx.doi.org/10.1051/e3sconf/202126403034.

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The article is about to the calculation of the main technical parameters of the directional air-hydraulic hood. It is accepted as a mathematical model of wave equations of hyperbolic type as applied to pressure pipelines of pumping stations, and analytical solutions of wave equations for different values of the polytropic exponents are proposed. Water hammer poses a danger to the normal operation of the main equipment of stations, control and measuring equipment, control devices and pressure pipelines. To damp the intensity of water hammer in the pressure pipelines of pumping stations, we have

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Zhang, Biao, Shikuan Song, Chenghu Jing, and Dong Xiang. "Displacement prediction and optimization of a non-circular planetary gear hydraulic motor." Advances in Mechanical Engineering 13, no. 11 (2021): 168781402110626. http://dx.doi.org/10.1177/16878140211062690.

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The non-circular planetary gear hydraulic motor is a low-speed and high-torque hydraulic motor with excellent performance. It has the characteristics of a wide speed range, low weight and is widely used in various fields. Aiming to solve the problem of there being no intuitive formula for calculating the displacement of the non-circular planetary gear hydraulic motor at present, based on the analysis of the effects of structural parameters on the displacement of the motor, this paper proposes a formula for calculating the displacement of a non-circular planetary gear hydraulic motor when the p

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Hou, Jiaoyi, Hongyu Sun, Aoyu Xu, Yongjun Gong, and Dayong Ning. "Fault diagnosis of synchronous hydraulic motor based on acoustic signals." Advances in Mechanical Engineering 12, no. 4 (2020): 168781402091610. http://dx.doi.org/10.1177/1687814020916107.

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Synchronous hydraulic motors are used in high load conditions. Therefore, the failure of such motors must be promptly detected to avoid severe accidents and economic loss. The automation of signal processing and diagnostic processes in practical engineering applications can help improve engineering efficiency and reduce hazards. As a non-contact acquisition signal, an acoustic signal has easier acquisition than a vibration signal. This article proposes an automatic fault detection method for synchronous hydraulic motors, which uses acoustic signals. The proposed method includes the automatic c

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Anatolii, Panchenko, Voloshina Angela, Boltyansky Oleg, et al. "DESIGNING THE FLOW-THROUGH PARTS OF DISTRIBUTION SYSTEMS FOR THE PRG SERIES PLANETARY HYDRAULIC MOTORS." Eastern-European Journal of Enterprise Technologies 3, no. 1 (93) (2018): 67–77. https://doi.org/10.15587/1729-4061.2018.132504.

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Improved efficiency of using the self-propelled machines is defined by the existence of hydraulic machines for the actuators of active working elements and running systems. Hydraulic drives of self-propelled machines exploit planetary hydraulic motors. The advantage of these hydraulic motors is a possibility to install them directly to the actuators of drilling machines, conveyors, winches, motor-wheels, etc. The basic node, limiting the work of a planetary hydraulic motor, is the distribution system. A distribution system creates a rotating hydraulic field that enables the working cycle of a

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16

Blashchuk, M. Yu, Anton A. Kazantsev, and R. V. Chernukhin. "Capacity Calculation of Hydraulic Motors in Geokhod Systems for Justification of Energy-Power Block Parameters." Applied Mechanics and Materials 682 (October 2014): 418–25. http://dx.doi.org/10.4028/www.scientific.net/amm.682.418.

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The paper provides description of an approach to calculate main parameters of energy-power block of geokhod computing the hydraulic motor capacity of each end user. The paper determines the effect of geokhod dimensions on capacity consumption by main geokhod systems. The shares of capacity consumed in each geokhod system are calculated.

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Kravchenko, Vasyl, Andrii Voitik, Oleksandr Pushka, Ivan Lisovyi, and Mykola Korobko. "Modelling of the hydraulic scheme for loading the sowing sections of sowing machines for energy recovery." Naukovij žurnal «Tehnìka ta energetika» 15, no. 2 (2024): 46–56. http://dx.doi.org/10.31548/machinery/2.2024.46.

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One of the most promising areas for improving the energy efficiency of machines is the use of energy recovery from its source. The study aims to develop a basic hydraulic scheme of the clamping mechanism of the sowing section, which would allow to recovery of the energy of the oscillatory movement of the sowing section relative to the sowing frame. The paper considers the scheme of using hydraulic loading of sowing sections using a single-acting hydraulic cylinder. To collect the energy of the sowing section of the seeder, it is proposed to install a hydraulic motor in the existing hydraulic l

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Нevko, I. B., O. L. Lyashuk, R. M. Rohatynskyi, A. Y. Matviishyn, and R. V. Khoroshun. "Synthesis of Suspension of Motor Vehicles." Central Ukrainian Scientific Bulletin. Technical Sciences 1, no. 8(39) (2023): 153–64. http://dx.doi.org/10.32515/2664-262x.2023.8(39).1.153-164.

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Abstract. In order to create progressive structures of car shock absorbers that would provide increased driving comfort and safety due to the absorption of shocks and vibrations that occur while driving on the road, we carried out their structural-schematic synthesis by the method of hierarchical groups with the help of morphological analysis. For this, the method of hierarchical grouping using morphological analysis was used and six basic types of suspension with original types of shock absorbers (hydraulic, hydropneumatic, pneumatic, magnetofluid, hydrovacuum and pneumovacuum type) were obta

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Borodychev, V. V., M. N. Lytov, and A. S. Razin. "Algorithm for computer modeling of combined irrigation systems hydraulic parameters." IOP Conference Series: Earth and Environmental Science 843, no. 1 (2021): 012052. http://dx.doi.org/10.1088/1755-1315/843/1/012052.

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Abstract A feature of combined irrigation systems is the integration of various technologies and methods of irrigation with the implementation of such a possibility on the basis of a single technical system. The hydraulic calculation of such systems is more complicated, since it is assumed that it is possible to implement various modes of operation, which differ by the combination of hydraulic parameters. The operating modes are determined by the combination of the involved irrigation technologies carried out simultaneously. The research has proposed an algorithm for the computer simulation of

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Hu, Kai, and Wenyi Zhang. "Design and simulation for driving system and steering system of hydraulic chassis of rice transplanter." Advances in Mechanical Engineering 10, no. 10 (2018): 168781401880890. http://dx.doi.org/10.1177/1687814018808901.

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A new hydraulic chassis of rice transplanter is designed based on the paddy machinery operation requirements. Driving system adopts single pump four-motor scheme, and the anti-slide valve group is used to prevent the slippage of the shunt-wound hydraulic motors. Hydraulic steering system adopts single-way stable diverter valve for ensuring its response in time. Then, hydraulic system and components parameters are designed and calculated. The driving resistance and average slip rate are measured in paddy field. The experimental data verifies the correctness of theoretical calculation. The desig

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Wu, Bao Gui, Shu Fa Yan, and Shao Ping Li. "Hydraulic Excavator Working Device Simulation Based on Virtual Prototype." Advanced Materials Research 1037 (October 2014): 49–52. http://dx.doi.org/10.4028/www.scientific.net/amr.1037.49.

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In order to observe the kinematic characteristic and dynamic characteristic of working state of hydraulic excavator, and aim at the complexity and time consuming of the numerical calculation and field test, the hydraulic excavator working device motion simulation and analysis scheme is put forward. By kinematics simulation, the envelope trajectory of the manipulator and the basic working parameters are got; by dynamics simulation, the force of each hinge in symmetrical and offset loadings is got, and the most hazardous working condition and hinge are determined. Thus provided the basis for str

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Jia, Zejin. "Switched Reluctance Motor Design and Optimization." Academic Journal of Science and Technology 9, no. 1 (2024): 219–21. http://dx.doi.org/10.54097/qjvj9791.

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In the field of electric vehicle engineering, Switched Reluctance Motors (SRMs) are progressively drawing the attention of developers for their streamlined structural design, superior torque output, economical cost-benefit, and excellent energy efficiency ratios. This paper takes a four-phase 8/6-pole switched reluctance motor as an example, with a rated power of 7.5Kw and a rated speed of 1500r/min. According to the basic design requirements of the SRM, the SRM parameter design flow is designed, and a Matlab calculation program is written for the preliminary calculation of the SRM parameters,

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Trukhanov, K. A. "CALCULATION OF THE MAIN ELEMENTS OF HYDRAULIC AUTOMATION OF SUBSEA X-TREE." Spravochnik. Inzhenernyi zhurnal, no. 339 (June 2025): 67–78. https://doi.org/10.14489/hb.2025.06.pp.067-078.

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At the designing a hydraulic system of Subsea X-Tree (Subsea XT), it is necessary to determine the parameters of all actuators and control devices (elements of hydraulic automation) of the hydraulic system, and also to confirm that the designed elements of hydraulic automation and the hydraulic system as a whole are reliable and safe and meet operational requirements in all modes of operation of hydraulic drives and in their mutual influence on each other during their joint operation. The article considers the issues of creating a mathematical model of Subsea XT drives, calculating and selecti

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Ashizawa, Satoshi, Toshiya Watanabe, Yuki Kamiya, Hidenori Aoki, and Takeo Oomichi. "Development of the Energy Simulator for the Water Hydraulic System Under Flow Condition Changes." Journal of Robotics and Mechatronics 23, no. 3 (2011): 416–25. http://dx.doi.org/10.20965/jrm.2011.p0416.

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The new energy simulator we developed is based on a hydraulic servosystem dynamic flow model introducing flow coefficients determined by Reynolds number. One is the pipe flow coefficient flow determined by the Moody diagram and the other is the servovalve flow coefficient based on flow model experiments. The motor dynamic model is introduced to determine efficiency such as coil resistance or rotor viscosity loss. Leakage of the hydraulic servovalve was also determined by the leak model. The feasibility of the proposed simulator was verified using computer simulation and experiments, showing di

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Antonenkov, D. A., and A. E. Shchodro. "Hydraulic Structures that Contribute to the Sediments Directed Transfer and the Mass Transfer Activation." IOP Conference Series: Earth and Environmental Science 988, no. 3 (2022): 032027. http://dx.doi.org/10.1088/1755-1315/988/3/032027.

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Abstract The article discusses the basic concepts of the currents ordering in the sea near-shore zone when substantial water flows come from the rivers that feed them. Some preliminary calculation schemes are considered to determine the main fundamental parameters of the systems of artificial structures that organize the flow in the seashore in order to ensure the best environmental conditions.

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Kravchenko, V., and Xiaolong Zhou. "METHOD AND RESULTS OF HYDRAULIC CALCULATION OF THE HEAT EXCHANGE SURFACE OF THE ONCE-THROUGH STEAM GENERATOR." Odes’kyi Politechnichnyi Universytet Pratsi 1, no. 63 (2021): 60–77. http://dx.doi.org/10.15276/opu.1.63.2021.07.

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Ukraine with her developed machine-building potential can take the deserving place in the production of small modular reactors. One of basic elements of small modular reactors equipment is steam generator. Among different types a deserving place is occupied by once-through steam generator. small modular reactors can exemplify to transport nuclear installation, for example KLT-40S. The calculation of hydraulic resistance is included in designing of steam generators, that it is necessary for the choice of pumps and optimization of structural parameters. In the presented article methodology of hy

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Wang, Yuanzhi, Shuting Huang, Gang Xue, and Yanjun Liu. "Influence of Hydraulic PTO Parameters on Power Capture and Motion Response of a Floating Wind-Wave Hybrid System." Journal of Marine Science and Engineering 10, no. 11 (2022): 1660. http://dx.doi.org/10.3390/jmse10111660.

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Hybrid systems that integrate wave energy converters (WECs) with floating offshore wind turbines (FOWTs) are considered to be key equipment to deeply exploit marine renewable energy. The power take-off (PTO) system is an important component of the hybrid system, whose parameters also have a significant impact on the hybrid system’s performance. In this paper, a wind-wave hybrid system using hydraulic PTO systems is proposed. A numerical simulation framework based on the linear wave theory and basic equations of hydraulic components is built and verified. The inﬂuence of six critical hydraulic

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Milecki, Andrzej, and Dominik Rybarczyk. "Modeling and Control of Proportional Valve with Synchronous Motor." Solid State Phenomena 220-221 (January 2015): 457–62. http://dx.doi.org/10.4028/www.scientific.net/ssp.220-221.457.

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The paper describes the research results of modeling and control of proportional valve with synchronous motor type PMSM (Permanent Magnets Synchronous Motor). In the paper, a simulation model of the proposed valve was developed and described. The model included the square root flow characteristics, nonlinearity of the hydraulic actuator, valve dead zone and saturation of the flow. The study included the investigations of the basic characteristics, such as valve flow characteristic and step responses. In order to determine the basic parameters of the valve, the test stand was built, on which th

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Jiang, Wenguang, Pengshuo Jia, Guishan Yan, et al. "Dynamic Response Analysis of Control Loops in an Electro-Hydraulic Servo Pump Control System." Processes 10, no. 8 (2022): 1647. http://dx.doi.org/10.3390/pr10081647.

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An electro-hydraulic servo pump control system realizes the basic action of a hydraulic cylinder by controlling the servo motor, which effectively improves the problems of a traditional valve control system such as high energy consumption, low power-to-weight ratio, and poor anti-pollution ability. However, the static accuracy and dynamic performance of an electro-hydraulic servo pump control system are limited due to the electro-hydraulic coupling and flow nonlinearity. Based on this, in this paper, we establish a mathematical model of an electro-hydraulic servo pump control system. Starting

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Zhang, Cheng Hu, Na Meng, and De Xing Sun. "Anti-Blocking Technology for Urban Sewage Source Heat Pump System." Advanced Materials Research 472-475 (February 2012): 637–40. http://dx.doi.org/10.4028/www.scientific.net/amr.472-475.637.

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The extremely poor sewage quality could make the sewage heat utilization difficult. The paper introduces the content and distribution property of the sewage dirt. For the dirt properties and project experience, it proposes the two basic points of the anti-blocking technique in sewage source heat pump system: filtering surface continuous regeneration and dirt continuous reduction and the request for filtering pore size parameters. It also describes the principle of filtering surface hydraulic continuous regenerative technique and establishes its mathematical model and design method of the devic

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Bezkorovainyi, Pavel, and Viktor Shestakov. "Determining rational parameters for the impeller of a hydraulic excavator with a crowding mechanism." Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal, no. 1 (February 20, 2023): 25–35. http://dx.doi.org/10.21440/0536-1028-2023-1-25-35.

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Introduction. The rationale for the research is conditioned by the need to improve the efficiency of hydraulic excavators which affect the prime cost of mining significantly. Research objective is to improve the design of hydraulic excavator impeller and develop the methods of determining impeller’s rational parameters ensuring its weight reduction. Methods of research. A model of hydraulic excavator with an impeller including a boom, a dipper arm, bucket, and hydraulic slewing cylinders for a boom, a dipper arm, and a bucket. For a front shovel hydraulic excavator, a new design has been devel

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Rybak, A. T., I. K. Tsybriy, S. V. Nosachev, and A. R. Zenin. "Theoretical background of hydraulic drive control system analysis for testing piston hydraulic cylinders." Vestnik of Don State Technical University 19, no. 3 (2019): 242–49. http://dx.doi.org/10.23947/1992-5980-2019-19-3-242-249.

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Introduction. The durability and performance of hydraulic machines is determined through life tests. At that, various braking devices (mechanical, electric, hydraulic, etc.) are used for strength loading of the hydraulic motor, as a result of which a significant amount of energy is lost. This can be avoided if the method of rotational motion with energy recovery is used during life tests. This approach is applicable for hydraulic pumps, motors, and hydraulic cylinders.Materials and Methods. A test bench is presented, the design of which provides recreation of the conditions most appropriate fo

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Kravchuk, Andriy, Oleksandr Kravchuk, Artem Lomako, and Olga Kravchuk. "Variation of the collective drainage pipelines parameters when passing the transit flow." Problems of Water supply, Sewerage and Hydraulic, no. 41 (December 9, 2022): 52–58. http://dx.doi.org/10.32347/2524-0021.2022.41.52-58.

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Simple and convenient dependences for calculating basic hydraulic and design characteristics of pressure collecting horizontal drainage pipelines operating in the presence of transit flow, in which the fluid collection along the path occurs in the filtration mode, are presented in the paper. They are based on the analysis of a system of differential equations that describe the fluid motion in such pipes. The solutions are based on the assumption that the member, which takes into account the effect of the flow variation along the pass, is neglected. The concept of a fictitious infinitely long c

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Zenin, A. R., A. T. Rybak, A. N. Beskopylny, A. Yu Pelipenko, and Yu A. Serdyukova. "Testing Bench for Reciprocating Hydraulic Cylinders with Energy Recovery: Structure, Simulation, and Calculation." Advanced Engineering Research (Rostov-on-Don) 24, no. 4 (2024): 347–59. https://doi.org/10.23947/2687-1653-2024-24-4-347-359.

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Introduction. Energy conservation is an urgent topic of research in the field of mechanical engineering all over the world. A particular direction in these studies is the search for energy-efficient methods of testing technical systems, which allow the most accurate prediction of the reliability of the designed equipment. The duration of resource tests established by technical conditions and GOSTs causes an irreversible loss of energy, amounting to more than 1.5 resource of the tested machine, and the energy lost in the form of “harmful heat” is released into the environment. Therefore, the pr

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Polansky, Jiri. "Thermodynamics Cycle of Gas-Cooled Fast Reactor." Mechanics and Mechanical Engineering 22, no. 2 (2020): 585–92. http://dx.doi.org/10.2478/mme-2018-0046.

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AbstractThis paper deals with the thermo-hydraulic aspect of gas cooled fast 4 generation reactor. The paper is focused on the comparison of direct and indirect strategy of thermodynamics cycle of helium cooled reactor from the thermodynamics and turbomachinary point of view. The analyses respect pressure looses at all major part of the equipment - reactor, heat exchanger, pipe lines, etc. The compressor and gas turbines efficiency are includes in calculation as well. The working fluid in primary circuit is helium. In the secondary circuit a mixture of helium and nitrogen is considered. The Cy

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Volgina, Lyudmila V. "Hydraulic Analysis of the Urban Drain System." E3S Web of Conferences 457 (2023): 02013. http://dx.doi.org/10.1051/e3sconf/202345702013.

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Analysis efficiency operating drain sewer systems (DSS) is a part of urban water management. Two basic parameters flooding and sediment formation with average annual precipitation and with rains varying intensity are considering. Dealing with hydraulic problems, modelling focus lies on non-pressure systems with two-phase flows. The main requirement in the design of gravity collectors is the flow rate with self-cleaning velocity. The initial data for hydraulics calculation DSS is the flow rate in hole system and geometrical characteristic of the each elements. The average velocity in local tube

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Polishchuk, Leonid, Oleh Piontkevych, Mykola Burdeinyi, and Vadym Trehubov. "Justification for choosing the type of belt conveyor drive." Journal of Mechanical Engineering and Transport 19, no. 1 (2024): 115–22. http://dx.doi.org/10.31649/2413-4503-2024-19-1-115-122.

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The designs and dynamic properties of electromechanical and hydraulic drives for a belt conveyor have been analyzed to justify their selection. The main advantages and disadvantages of their operation have been formulated. It has been established that the hydraulic drive has advantages compared to the electromechanical one for installation in a built-in drive for a belt conveyor. The design features and principles of operation of these drives have been described. Calculation schemes have been developed for the electromechanical and hydraulic drives of the belt conveyor. A mathematical model of

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Wang, Xu, and Xin Ma. "Preliminary results of the “four-dimensional six degrees-of-freedom” gait simulation system improvement." Foot & Ankle Orthopaedics 3, no. 3 (2018): 2473011418S0051. http://dx.doi.org/10.1177/2473011418s00510.

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Category: Basic Sciences/Biologics Introduction/Purpose: Using computer-controlled electro-hydraulic servo technology, we studied the improved “four-dimensional six degrees-of-freedom” gait simulation system based on motor and hydraulic hybrid drive control and achieved the human body’s normal gait cycle with fresh cadavers Methods: Through the superimposed combination of a composite servo motor drive mechanism, a highly precise “four-dimensional six degrees-of-freedom” at the tibia could be achieved using fresh cadavers below the knee. At the same time, ten sets of independently controlled el

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Liang, Yijie, Tongjian Wang, Xin Wang, Weiquan Liang, and Xinhui Liu. "Simulation research on hydraulic hybrid assistant beam pumping unit." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 230, no. 11 (2015): 1795–804. http://dx.doi.org/10.1177/0954406215584631.

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Conventional beam pumping units have occupied an important position in oilfield equipment due to such characteristics as simple structure, high reliability, simple operation, easy maintenance, and so on. In fact, there are about 90,000 sets of beam pumping units in China. However, the unbalanced structure of the beam pumping units cannot be entirely eliminated because of the inherent geometry and mechanical properties of four-bar linkage, that is the electromotor equivalent torque ripple cannot be absorbed or eliminated by counterweight in up-and-down travels, which causes the electromotor to

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Cao, Dinh Hung, Tran Chung Le, Thi Thanh Thuy Nguyen, and Tuan Nam Pham. "Thermal hydraulic preliminary calculations for small modular reactor based on ACPR50S technology." Ministry of Science and Technology, Vietnam 65, no. 8 (2023): 40–44. http://dx.doi.org/10.31276/vjst.65(8).40-44.

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This paper presents preliminary thermal-hydraulics calculation results for a small modular reactor (SMR) with a thermal capacity of 200 MW based on the ACPR50S reactor technology (Advanced customer-friendly practicable reliable 50 MWe compact SMR). The basic parameters and thermal-hydraulics safety were assessed, including the heat coolant flow through the core, fuel, and cladding temperatures to ensure the reactor’s capability to operate within safe limits. The SMR configuration was simulated using the RELAP5 program and performed the calculation in about 500 seconds in the steady state. The

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Wang, Aihong, Zhenfeng Lv, Youshan Gao, Long Quan, and Jiahai Huang. "Potential energy recovery scheme with variable displacement asymmetric axial piston pump." Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 234, no. 8 (2019): 875–87. http://dx.doi.org/10.1177/0959651819885208.

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Hydraulic systems are widely used in construction machinery and equipment. However, the energy efficiency of hydraulic system is low. In many cases, hydraulic systems output energy to lift the working device. During the lowering process, the potential energy is commonly wasted through the throttling loss of the control valve. Recovering the potential energy is an efficient way to improve the hydraulic system efficiency. In this article, theoretical analysis, simulation calculation, and experimental verification were used to study the energy recovery efficiency of a differential cylinder system

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Lefik, Marcin, and Zbigniew Gmyrek. "Numerical modelling of a flux-barrier SynchRel motor including punching effect." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 35, no. 6 (2016): 2022–34. http://dx.doi.org/10.1108/compel-03-2016-0090.

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Purpose Estimating the punching process’s impact on the operating parameters of an electrical motor is a special problem especially in the case of fractional power motors. The purpose of this paper is to discuss a method of numerical modelling that is useful for this case. Design/methodology/approach The proposed multi-physical FEM approach is based on using professional software in the process of modelling and determining the operating parameters of a low power motor. The basic elements of the approach are built FEM models for which the parameters characterising the damaged portions of the ma

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Pryshlyak, Viktor, and Viktor Dubchak. "FINDING THE SIZE OF PRESSURE FORCE ON UNDERWATER HYDRAULIC STRUCTURES IN DESIGN AND AGRICULTURAL TRAINING OF SPECIALISTS." ENGINEERING, ENERGY, TRANSPORT AIC, no. 1(108) (August 27, 2020): 111–22. http://dx.doi.org/10.37128/2520-6168-2020-1-13.

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The article presents the results of scientific analytical studies that provide finding the pressure force on underwater hydraulic structures, such as, dams of hydroelectric power stations, sedimentation tanks for liquid organic fertilizers, sewage, coastal fortifications of lakes, rivers, ponds, etc. Practical experience in industrial and pedagogical activity and the analysis of inventive and scientific research of domestic as well as foreign scientists showed that constructive, technological and economic feasibility, operational safety of underwater hydraulic structures requires further analy

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Dichev, Dimitar, Borislav Georgiev, and Iliya Zhelezharov. "ELECTRO-HYDRAULIC SYSTEM OPTIMIZATION THROUGH AN ADVANCED KALMAN FILTER." ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference 4 (June 8, 2025): 65–71. https://doi.org/10.17770/etr2025vol4.8416.

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This paper presents a mathematical model of the Kalman Extended Filter (EKF) for estimating dynamic states in an electro-hydraulic system. The main goal is to increase the accuracy and stability of estimates in the presence of noise and nonlinearities in the dynamics of the system. EKF combines information from hydraulic motor shaft angular velocity measurements and the pressure difference between its inlet and outlet to provide reliable estimates of basic dynamic system parameters, including the current angular velocity and the moment created by the external load. Simulation studies demonstra

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Jin, Xiao Hong, Xian Bao Xiang, Lin Jiang, and Qin Fen Miao. "Rollback and Compensation for an Easy Control Hydraulic Servo Joint." Applied Mechanics and Materials 312 (February 2013): 662–66. http://dx.doi.org/10.4028/www.scientific.net/amm.312.662.

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The easy control hydraulic servo joint is a key element for a reconfigurable robot and its response and control accuracy determine the performance of the robot. With the stepping motor as the input element the main parts of joint includes a rotational valve with the double orifice and the single-vane actuator. The basic structure and the working principle of joint are introduced. The mathematic model is established and the dynamic responses are analysed by using the digit simulation. From the results of simulation, a phenomenon of rollback in the process of response of joint is observed. With

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Dindorf, Ryszard, Jakub Takosoglu, and Piotr Wos. "Review of Hydro-Pneumatic Accumulator Models for the Study of the Energy Efficiency of Hydraulic Systems." Energies 16, no. 18 (2023): 6472. http://dx.doi.org/10.3390/en16186472.

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This review article deals with hydro-pneumatic accumulators (HPAs) charged with nitrogen. The focus is on HPA models used in the study of the energy efficiency of hydraulic systems. Hydraulic circuits with HPA are presented along with their various applications for delivering the required volume of fluid, maintaining the required pressure, ensuring safe operation, safety stop, leak compensation, fluid volume change compensation, pulsation damping, and pressure shock absorption. A general regenerative hydraulic system and a general hybrid hydraulic system are also presented. The review focuses

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Chen, Hanzhe, Dingxuan Zhao, Zhuxin Zhang, Tuo Jia, Ruoyu Zhao, and Zhengkun Qu. "Design and Development of Explosion-Proof Cavity of Hydraulic System Power Unit Applied in Explosion-Proof Area." Processes 10, no. 9 (2022): 1824. http://dx.doi.org/10.3390/pr10091824.

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The construction machinery and vehicles, especially the explosion-proof and explosion-isolation ability of the vehicles are playing an increasingly important role in the complex and unpredictable emergency rescue field. In this paper, the explosion-proof housing of hydraulic system power unit applied in engineering machinery is investigated, wherein the power unit includes motor, power supply and control element. Motor-driven hydraulic pump provides the necessary power for the hydraulic system. The gas explosion process, basic parameters, flame acceleration mechanism and the theory model of ga

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Zhang, Jian, Yinxun Shao, Yinxin Long, et al. "Methods for the Viscous Loss Calculation and Thermal Analysis of Oil-Filled Motors: A Review." Energies 17, no. 18 (2024): 4659. http://dx.doi.org/10.3390/en17184659.

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Oil-filled motors (OFMs) are widely used in deep-sea exploration and oil well extraction. During motor operation, the rotor stirs the oil in the air gap, causing viscous loss. Viscous loss affects the temperature distribution inside the motor. Accurately calculating the viscous loss and temperature rise in OFMs can provide a basis for optimizing the motor’s structural design. Motor structural parameters, including the rotor’s outer diameter, air gap, and slot opening, have a significant impact on viscous loss. The working conditions of OFMs, such as rotor speed and environmental temperature, a

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A S, Sharan, Somashekhar S. Hiremath, C. S. Venkatesha, and S. Karunanidhi. "Investigation on the critical parameters affecting the working design dynamics of a torque motor employed in an electro-hydraulic servovalve." SIMULATION 95, no. 1 (2018): 31–49. http://dx.doi.org/10.1177/0037549718759187.

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The torque motor is an intricate assembly in electro-hydraulic technology and plays a crucial role in converting the electrical signal into controlled mechanical output signal. It involves many precise components, such as the feedback spring, armature and its coil, permanent magnet, feed pipe, flexure shaft, jetpipe, and flexure support. The components are embedded together as a single operating component. Each component contributes to the effective dynamics of the system. The present paper proposes a novel approach to investigate the effect of critical parameters on the working design dynamic

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Benedek, Kálmán, and Gyula Dankó. "Stochastic hydrogeological modelling of fractured rocks: a generic case study in the Mórágy Granite Formation (South Hungary)." Geologica Carpathica 60, no. 4 (2009): 271–81. http://dx.doi.org/10.2478/v10096-009-0019-y.

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Stochastic hydrogeological modelling of fractured rocks: a generic case study in the Mórágy Granite Formation (South Hungary)In connection with the Hungarian radioactive waste disposal program a detailed study of the mass properties of the potential host rock (granite) has been carried out. Using the results of this study the various parameters (orientation, length, intensity, transmissivity, etc.) describing a fracture set were estimated on the basis of statistical considerations. These estimates served as basic input parameters for stochastic hydrogeological modelling of discrete fracture ne

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