Abstract and keywords
Abstract (English):
Study objective. Giving grounds to the possibility of making pipeline stop valves with minimal mass and size parameters and maximum operational efficiency. The task to which the paper is devoted. Reduction of mass and size parameters of pipeline stop valves. Research methods. The problems are solved according to the basic methods of hydrostatics (Pascal's law) and hydrodynamics (Bernoulli’s principle). The novelty of the work. It consists in finding the possibility of replacing complex, large-sized and massive elements of pipeline control systems with simple elements operating according to the basic laws of hydraulics. Study results. The studies conducted confirm the possibility to simplify significantly the designs of pipeline stop valves, reducing the mass and size parameters and increasing the efficiency and reliability of pipeline systems. Conclusions. Taking into account the peculiarities of the static and dynamic state of the fluid (liquid, gas), using the laws of hydrostatics and hydrodynamics, it is advisable to divide the entire structure of the pipeline stop valves into two interconnected devise components combined in one case: a device that locks the pipeline (stopping the fluid flow), and a device that opens the pipeline (ensuring the fluid flow). At the same time, one of the devices operates due to high-speed (dynamic) fluid pressure, and the second - due to static pressure.

hydrostatics, hydrodynamics, hydraulic drive, pipeline, valves, control system

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