Adaptation of the performance control system of a technological piston hydrogen compressor to unstable operating conditions

Abstract

Issues related to possible problems of the feasibility of operating the existing system for regulating the performance of a technological piston hydrogen compressor at a large chemical production and the relevance of its modernization are considered. In practice, modernization is one of the options for implementing import-substituting technologies in relation to equipment operated at large chemical, oil and gas processing enterprises. Technical and economic factors are accepted as the dominant prerequisites; as an alternative to the existing control system by squeezing the valves for part of the piston stroke, a control technology is chosen by changing the value of the dead volume in the working chamber of the cylinder. The presence of significant uncertainty factors in the implementation of known methods for calculating the productivity losses of the actual working process in the stage of a piston compressor has led to the need to perform variant calculations. The implementation of this approach ensured high convergence of the results of calculations and industrial tests and made it possible to clarify the value of the conditionally constant polytropic index of the final parameters, applicable for similar calculations of the object under consideration. Recommendations for the design of piston compressors with variable capacity are presented.

Keywords

• piston compressor
• hydrogen
• capacity control
• valve pressing
• dead volume change
• capacity
• discharge temperature