Orlov I. The control and monitoring of availability index of product of the multistage installations of transportation and compression of gas under operating conditions

Dissertation is dedicated to developing of control and monitoring methods of technical state index estimation of the gas compression installations (CI) for automobile gas filling compressor stations (AGFCS) during operation and their implementation in the complex diagnostic automated system of CI. The basis of an overall system of diagnosing is made by (with). The methods of the CI working process parameters analysis, vibrational diagnostic and accumulation of products of wearing in oil were used as fundamentals for the proposed diagnostic system. The mathematical model of CI working process is developed. This model allows to perform simulation of processes of technical state index deterioration. Besides, it permits to define the faults of cylinder-piston assembly, and also calculate complex indexes of availability of cylinder-piston assembly elements, such as intake valves, exhaust valves and piston rings. The technique of the availability index identification of CI with usage of parameters of a working process is based on the statistical methods trend analysis of complex factors of availability indexes of CI cylinder-piston assembly elements, as well as their discrepancies, and also methods of the theory of decision marking on the basis of sign matrixes. The technique of CI availability index identification on parameters of vibration and accumulation of wearing products in oil is based on the discriminant analysis of the conforming classes of states of CI cylinder-piston assembly elements and crankshaft- rod mechanism. The computer program of CI heat engineering tests under operating conditions is developed and adopted. This program allows to determine CI basic performances , quality of repair and refurbishment works realization, and also efficiency and profitability of further exploitation of CI. The developed complex automated system has passed operational testing on "UKRTRANSGAZ" sub-company's AGFCS, as well as on "NAFTOGAS of UKRAINE" state cjmpany's AGFCS in the term from 1996 up to 2001 years. Highenough capabilities of this system for detection and identification of CI defects at early stages of their development was also shown. The operation and approbation phase of a system of monitoring and diagnosing of availability index of product CI implemented in technical-engineer center "Orionum-D".