Авторы:
Издательство:
Дата издания
05.04.2026На каком языке издана
ISSN
20763417Область исследования
Тип исследования
Аннотация (краткое описание)
Reliable and energy-efficient capacity control in high-pressure single-rotor screw compressors requires precise regulation of adjustable ring mechanisms operating under combined gas and thermal loading. Thermo-mechanical deformation, friction-induced torque demand, and stress concentration near discharge windows significantly influence structural integrity, clearance stability, and actuation performance. This study presents an integrated thermo-structural and analytical investigation of a regulating ring system with a hydraulic wedge-groove drive concept. Three groups of geometric variants (nine configurations total) were analyzed using coupled Steady-State Thermal and Static Structural finite element modeling in ANSYS 19.2. Thermal asymmetry between suction (22 °C) and discharge (120 °C) regions produced peak thermally induced deformation of 0.17–0.18 mm, consuming up to 60–70% of nominal operating clearance. Neglecting thermal effects underestimated peak thermally induced structural deformation of the regulating ring by 12–15%. Among the configurations, variant 2b provided the most balanced response, reducing peak equivalent stress by 12–15% and required actuation torque by 8–11%. An analytical model for friction torque and driving force was derived based on distributed contact pressure. The results reveal quadratic sensitivity of torque to contact radius and strong dependence on groove geometry. The proposed framework supports reliable clearance design and efficient actuation in heavy-duty rotating machinery. © 2026 by the authors.DOI
10.3390/app16073557Тип публикаций
Практическое значение
The practical significance of this study lies in improving the reliability, efficiency, and operational durability of high-pressure single-rotor screw compressors through optimized regulating ring design and thermo-mechanical analysis. The developed integrated modeling approach enables engineers to accurately predict thermal deformation, stress distribution, and friction-induced torque under real operating conditions, reducing the risk of clearance loss, excessive wear, and mechanical failure. The identification of the optimal geometric configuration (variant 2b) provides a practical solution for minimizing stress concentrations and reducing actuation torque requirements, thereby enhancing the performance and energy efficiency of compressor capacity control systems. The derived analytical model for friction torque and driving force can be used during the design stage to optimize hydraulic actuation mechanisms and improve control accuracy. The proposed methodology is applicable to the design and modernization of heavy-duty rotating machinery used in the oil and gas, petrochemical, power generation, refrigeration, and industrial processing sectors, where reliable operation under high thermal and mechanical loads is critical.Квартиль
Источник квартиля
SCImago (Scopus)Impact Factor
6.1Данный документ располагается в коллекциях
Международные публикации ученых SU
Scopus