RESONANT WAVE PROCESSES IN SUCTION SYSTEMS OF PISTON COMPRESSORS

Abstract

One of the most productive and economically well-founded method of piston compressors intensification is the use of resonant oscillations of gas pressures in suction systems which allow to raise productivity of the compressor to 20 % practically without capital expenses, by modernization of a suction system. Resonance conditions haven't yet been mach applied despite many researches. In the article the main reasons of such condition are defined. All of them are a consequence of little knowledge about the influence of gasdynamic and the thermodynamic conditions in a system «a suction pipeline – a suction valve – a first level cylinder» on the major technical parametres of piston compressors. On the basis of the theoretical analysis and experimental researches of wave conditions in a suction system practical recommendations about the definition of optimal values of compressors pipelines resonant lengths with double action cylinders in the first level at which the compressor develops maximum productivity are made. For the first time three characteristic areas of the suction system are revealed, making various impact on filling of the cylinder with gas. One of them, — superresonant area, — is the most functional according to its power consumption spent on gas suction and compression. On the basis of experimental data it is stated on considerable influence of suction valves resistance on intensity of an oscillating process and on the compressor volume efficiency. It is shown that only knowledge of amplitude and state characteristics of the suction system gives the opportunity to take into consideration the influence of resonant oscillations of pressure on the process of filling of the cylinder with gas and on thermodynamic processes in the compressor.