FIELD: gas transportation systems.
SUBSTANCE: invention relates to the field of moving fluids through pipelines, namely to a low-pressure gas transportation system, and can be used if it is necessary to change the dynamic and flow characteristics of the fluid being moved, preferably when changing the flow and pressure of the gas being moved in the pipeline. A group of ejectors is used with at least two ejectors installed in parallel with the same capacity, but with different flow parts, which are designed for different pressure ratios of high-pressure fluid, low-pressure gas and mixture, in parallel to which a control valve of the active fluid bypass line is additionally installed, and to a low-pressure gas line is connected to the inlets of the ejectors, and a high-pressure fluid line is also connected to the ejector inlets through the shut-off valves, which is additionally connected through a shut-off valve to the inlet of the specified control valve, while the outputs of the ejectors and the specified control valve are connected to the mixture line through the shut-off valves, with In this case, the ejectors are made with the possibility of replacing nozzles and mixing chambers during operation, and the inlet of the active medium into the ejectors is made at a right angle to the ejector axis.
EFFECT: method simplification, i.e. when pressure changes active, passive or gas at the outlet of the installation, there is no need to stop the process, because parallel to the operating ejectors, ejectors with flow parts designed for new pressures are installed.
7 cl, 1 dwg
