Sarapin V. Improvement of performance of turboexpander units operating in natural gas transportation systems

Object of research - thermal and gasdynamic processes, occurring in the systems of the preparation and transportation of natural gas, including in the flow path of turboexpanders. Objective - create new flow diagrams with the use of turboexpanders in the system of production and transportation of gas, development of new designs and increase the efficiency of flow parts of turboexpanders. Research methods - methods of mathematical modeling of processes in the elements concepts, optimization methods for determining the nominal parameters of the utilization turboexpander, methods of three-dimensional calculations of flow parts, method of experimental research of turboexpanders. Theoretical and practical effects - proposed the concepts of low-temperature separation of natural gas and the utilization turboexpanders, and provides guidance on profiling of blades of a flowing part of the turboexpanders. Novelty - based on the comprehensive computational studies using the methods of numerical solution of systems of equations proposed a new scheme of low-temperature separation of natural gas and the utilization turboexpanders, and proposed a new method for determining the nominal parameters of the turboexpander, as well the resulting nature of the influence of the geometric characteristics of the profile of rotor blades of the turboexpander in the efficiency at variable operating conditions. Degree of implementation - the results are used at PJSC "Turbogaz". Area of application - turbine construction and gas industry.