Abstract
The research of the dynamic model of single-acting crank pump with damless hydro turbine drive has been made in the present work. Compiled dynamic and mathematical models of single-acting crank pump with damless hydro turbine drive have been constructed. The equations of motion have been solved using analytical and numerical methods and their results have been compared. The characteristics of the damless hydro turbine with the load of the crank pump have been evaluated depending on the radius of the rotor and on the speed of the watercourse. It has been revealed that the average angular velocity of rotation of hydro turbine in a stationary mode is the angular velocity of the hydro turbine at idle and does not depend on the mode of piston pumps. Average speed depends only on the parameters of a hydro turbine and the flow velocity of the watercourse. The results obtained in the course of theoretical research can be successfully used for the design of hydro turbine as a drive for single-acting crank pump. DOI: http://dx.doi.org/10.5755/j01.mech.20.6.7432
Highlights
Development of the renewable energy and the ever-increasing application of power plants which uses renewable energy sources are recognized by scientists as one of the most important areas of sustainable development
We formulate the objectives of the dynamics study of the piston crank pump with hydro turbine drive and with radial blades as follows: it is required to find regularities that characterize the work of a piston pump with damless hydro turbine drive
The average angular velocity of rotation of hydro turbine in a stationary mode equals to the angular velocity of the hydro turbine at idle and does not depend on the mode of work of piston pumps
Summary
Development of the renewable energy and the ever-increasing application of power plants which uses renewable energy sources are recognized by scientists as one of the most important areas of sustainable development. In accordance with the state of technique and technology progress the most effective power plants based on renewable energy sources keep to be various types of hydroturbines To their indisputable advantages can be included a high value of efficiency and low cost, as well as several others. In many hard-to-get communities settled along banks of rivers sundry types of hydro pumps must be used to supply water to the irrigated fields For such hydro pumps motors or internal combustion engines are used primarily as a drive, which seems to be disadvantageous in economic terms. In the books [1, 2] fundamentals of computation theory and theory of operation of crank piston pumps are illuminated They show typical pump designs, considered design features and strength calculation of details of hydraulic block. This research includes the study of the discharge valve to estimate the valve closing time and fluid mass being recycled back into the cylinder through hand calculations
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