Analysis of the loaded state of the cylinder of the low-speed piston unit stage under liquid and gas compression

Abstract

The article analyzes the stress-strain state of the cylinder of the low-speed stage of the long-stroke reciprocating piston compressor and pump unit under loading by internal pressure considering the temperature of its walls. The analysis is given to the nature of the working process of both units with regard to their operation features. The relevance of determining the clearances in the long-stroke units is confirmed, since the gaps that emerge in this case significantly affect unit operation and efficiency as a whole. Comparative analysis has showed the temperature effect to be the main cause of the deformed state of these units when in operation. Conducted calculations provide the possibility for optimal development of the designs of piston stages under conditions of temperature loads taking into account the real clearances in the cylinder-piston seal that occur in the deformed state.