Дослідження динамічних процесів у гідросистемі затискання штаби сегментного розмотувача агрегату укрупнення рулонів ТЕЗА 20-114
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Date
2022
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Publisher
Український державний університет науки і технологій, ННІ «Інститут промислових та бізнес технологій»
Abstract
UKR: Робота присвячена дослідженню динамічних процесів, що виникають у гідросистемі механізму переміщення та затискання штаби у сегментному розмотувачі агрегату укрупнення рулонів (АУР) ТЕЗА 20-114. Досвід експлуатації сегментного розмотувача АУР розмотувача показав, що одним з його недоліків є незадовільна робота гідросистеми затискання штаби, у якій спостерігаються підвищенні динамічні навантаження. Запропоновано математичну модель дослідження динамічних процесів у гідросистемі затискання штаби у сегментному розмотувачі з урахуванням хвильових властивостей довгих гідромагістралей. В ході реалізації математичної моделі у програмному середовищі Simulink MATLAB виконано дослідження режимів роботи гідросистеми механізму затискання штаби. Було встановлено, що на при кінці робочого та зворотного ходів механізму затискання рулону у кінцевих положеннях виникають у гідросистемі динамічні навантаження які осягають максимально допустимих значень. Окрім того встановлено, що у період розгону поршня гідроциліндру при робочому та зворотному ході, хоча і не виникають небезпечні навантаження, однак спостерігаються стрімкі коливання тиску у порожнинах гідроциліндру. У результаті дослідження перехідних процесів у гідросистемі розмотувача з різним часом спрацьовування гідророзподільника було рекомендовано його раціональний час спрацьовування як при відкритті , так і закритті.
ENG: In the technological line for the production of small diameter pipes used segment unwinder staffs with a cantilever drum and additional support. The experience of its operation has shown that one of its main shortcomings is the unsatisfactory operation of the hydraulic system clamping staffs. In the hydraulic clamping system of the staffs there are increased dynamic loads, which lead to the failure of components and elements of the hydraulic system. The layout of the hydraulic clamping system of the headquarters is made for design and technological reasons, without taking into account the influence of pipeline lengths on the nature of dynamic processes in the hydraulic system. In addition, the hydraulic system uses spool hydrodistributors with electro hydraulic control, the operation time of which is practically not subject to regulation. Based on the analysis of known mathematical models for the study of dynamic processes in hydraulic systems, it was concluded that as a mathematical model that takes into account the design and operation of the hydraulic clamping system staffs finite difference method in a system of ordinary differential equations with boundary conditions described by algebraic equations. A basic dynamic model has been created, which allows to analyze with high reliability the behavior of the hydraulic system of the clamping mechanism of the staff in the segment unwinder of the rolls, which is exposed to different nature in a wide range of mode parameters. Simulink MATLAB software environment was used to effectively solve this problem. During the implementation of the mathematical model, a study of the modes of operation of the hydraulic system of the clamping mechanism of the staff was performed. It was found that at the end of the working and reverse strokes of the clamping mechanism of the roll in the end positions there are dynamic loads in the hydraulic system that reach the maximum allowable values. In addition, it was found that during the acceleration of the piston of the hydraulic cylinder during operation and reverse, although there are no dangerous loads, but there are rapid fluctuations in pressure in the cavities of the hydraulic cylinder. Theoretical studies of the modes of operation of the hydraulic clamping system of the staff in the segment unwinder with different operating times of the control valve. As a result of the study of transients in the unwinding hydraulic system with different operating times of the hydraulic distributor, its rational operating time was recommended, which is 0.20 seconds when opening and 0.15 seconds when closing.
ENG: In the technological line for the production of small diameter pipes used segment unwinder staffs with a cantilever drum and additional support. The experience of its operation has shown that one of its main shortcomings is the unsatisfactory operation of the hydraulic system clamping staffs. In the hydraulic clamping system of the staffs there are increased dynamic loads, which lead to the failure of components and elements of the hydraulic system. The layout of the hydraulic clamping system of the headquarters is made for design and technological reasons, without taking into account the influence of pipeline lengths on the nature of dynamic processes in the hydraulic system. In addition, the hydraulic system uses spool hydrodistributors with electro hydraulic control, the operation time of which is practically not subject to regulation. Based on the analysis of known mathematical models for the study of dynamic processes in hydraulic systems, it was concluded that as a mathematical model that takes into account the design and operation of the hydraulic clamping system staffs finite difference method in a system of ordinary differential equations with boundary conditions described by algebraic equations. A basic dynamic model has been created, which allows to analyze with high reliability the behavior of the hydraulic system of the clamping mechanism of the staff in the segment unwinder of the rolls, which is exposed to different nature in a wide range of mode parameters. Simulink MATLAB software environment was used to effectively solve this problem. During the implementation of the mathematical model, a study of the modes of operation of the hydraulic system of the clamping mechanism of the staff was performed. It was found that at the end of the working and reverse strokes of the clamping mechanism of the roll in the end positions there are dynamic loads in the hydraulic system that reach the maximum allowable values. In addition, it was found that during the acceleration of the piston of the hydraulic cylinder during operation and reverse, although there are no dangerous loads, but there are rapid fluctuations in pressure in the cavities of the hydraulic cylinder. Theoretical studies of the modes of operation of the hydraulic clamping system of the staff in the segment unwinder with different operating times of the control valve. As a result of the study of transients in the unwinding hydraulic system with different operating times of the hydraulic distributor, its rational operating time was recommended, which is 0.20 seconds when opening and 0.15 seconds when closing.
Description
І. Мазур: ORCID 0000-0003-2177-7110
Keywords
розмотувач сегментний, гідросистема, тиск, зусилля, гідророзподільник, час спрацьовування, навантаження динамічні, процеси перехідні, segment unwinder, hydraulic system, pressure, force, hydraulic distributor, operating time, dynamic loads, transient processes, КМАМВ
Citation
Мазур І. А., Щербінін М. О. Дослідження динамічних процесів у гідросистемі затискання штаби сегментного розмотувача агрегату укрупнення рулонів ТЕЗА 20-114. Системні технології. Дніпро, 2022. Т. 1. № 138. С. 98–114. DOI: 10.34185/1562-9945-1-138-2022-09.