Email this article Mathematical modeling of the high-pressure hydraulic drive of a regulating valve control system of the steam turbine of a steam-electric plant
- Authors: Romanchuk E.Y.1, Kotkas L.A.1, Zharkovsky A.A.1, Zhurkin N.А.1
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Affiliations:
- Peter the Great St. Petersburg Polytechnic University
- Issue: Vol 18, No 3 (2024)
- Pages: 190-202
- Section: Hydraulic and pneumatic systems
- URL: https://journals.eco-vector.com/2074-0530/article/view/626902
- DOI: https://doi.org/10.17816/2074-0530-626902
- ID: 626902
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Abstract
BACKGROUND: High-pressure hydraulic drives are used to control the shut-off valves of steam and gas turbines. Currently, there is a trend of transition from the low-pressure control systems to the high-pressure control systems, which leads to decrease of size of a control unit and to ensuring easy reparability. The Bosch Rexroth high-pressure hydraulic actuators are widely used. These hydraulic drives are capable of moving the shut-off valve element during up to 0.3 s.
AIM: Development of the mathematical model to obtain main dynamic characteristics of a hydraulic drive of the regulating valve control system of the steam turbine of a steam-electric plant.
METHODS: The studies of dynamic characteristics were carried out with a numerical method using the MATLAB/Simulink software.
RESULTS: The mathematical model of the high-pressure hydraulic drive of the regulating valve control system of the steam turbine of a steam-electric plant, capable of moving the shut-off valve element during up to 0.3 s, was developed. The dynamical characteristics, such as displacement and velocity of the shut-off valve element of the regulating valve, pressure change in the hydraulic cylinder cavities, displacement of a plunger of a spool valve, are presented. The possibility of reducing the list of the used hydraulic equipment was also considered: a comparison of the system with accelerator valves and without accelerator valves was carried out.
CONCLUSION: The practical value of the study lies in the possibility of using the developed mathematical model in the study of various types of hydraulic drives.
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About the authors
Elizaveta Yu. Romanchuk
Peter the Great St. Petersburg Polytechnic University
Author for correspondence.
Email: elizabetaromanchuk@yandex.ru
ORCID iD: 0000-0001-8448-8813
SPIN-code: 4234-0540
1st year Graduate Student of the Higher School of Power Engineering of the Institute of Energy
Russian Federation, 29 Polytekhnicheskaya street, 194064 Saint PetersburgLyubov A. Kotkas
Peter the Great St. Petersburg Polytechnic University
Email: kotkas334@gmail.com
ORCID iD: 0000-0002-5485-2183
SPIN-code: 7620-2811
1st year Graduate Student of the Higher School of Power Engineering of the Institute of Energy
Russian Federation, 29 Polytekhnicheskaya street, 194064 Saint PetersburgAlexander A. Zharkovsky
Peter the Great St. Petersburg Polytechnic University
Email: azharkovsky@gmail.com
ORCID iD: 0000-0002-3044-8768
SPIN-code: 3637-7853
Dr. Sci. (Engineering), Professor, Professor of the Higher School of Power Engineering of the Institute of Energy
Russian Federation, 29 Polytekhnicheskaya street, 194064 Saint PetersburgNikita А. Zhurkin
Peter the Great St. Petersburg Polytechnic University
Email: zhurkin47@mail.ru
ORCID iD: 0000-0002-2851-5626
SPIN-code: 8188-7731
Assistant of the Higher School of Power Engineering of the Institute of Energy
Russian Federation, 29 Polytekhnicheskaya street, 194064 Saint PetersburgReferences
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