A Method of Two-Stage Pressure Control Based on Multistage Orifices
The interaction of pressure and flow in a hydraulic system with multiple working conditions, multiple actuators, and large flow limits action adjustment and control. Through a pilot pressure control circuit, hydraulically operated valves can adjust pressure or direction more effectively. A recent st...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/2/589 |
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| author | Junxia Gao Fenghe Wu Jun Tang Zichun Geng |
| author_facet | Junxia Gao Fenghe Wu Jun Tang Zichun Geng |
| author_sort | Junxia Gao |
| collection | DOAJ |
| description | The interaction of pressure and flow in a hydraulic system with multiple working conditions, multiple actuators, and large flow limits action adjustment and control. Through a pilot pressure control circuit, hydraulically operated valves can adjust pressure or direction more effectively. A recent study proposed a two-stage pressure control method based on multistage orifices and solenoid valves. The requirements of the number and diameter ratio of short orifices in the series to realize the two-stage pressure control were theoretically analyzed. Scheme design and experiment were carried out. The influence of structures of complex flow channel and solenoid valve on the higher or lower pilot control pressure was considered in the experiment. The method was experimentally verified and successfully applied in a turbine electrohydraulic control system with lower maintenance costs, making the system more reliable in the case of electrical failure. Research results provide insight into pilot pressure control in fluid systems using multistage orifices to achieve either higher or lower pressure. In addition, it has important guiding significance for the design of valves or engineering systems based on pilot hydraulic pressure. |
| first_indexed | 2024-03-09T05:30:59Z |
| format | Article |
| id | doaj.art-1e44f509a3874971b34df643cc31cefa |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T05:30:59Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-1e44f509a3874971b34df643cc31cefa2023-12-03T12:32:14ZengMDPI AGApplied Sciences2076-34172021-01-0111258910.3390/app11020589A Method of Two-Stage Pressure Control Based on Multistage OrificesJunxia Gao0Fenghe Wu1Jun Tang2Zichun Geng3Department of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, ChinaDepartment of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, ChinaDepartment of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, ChinaDepartment of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, ChinaThe interaction of pressure and flow in a hydraulic system with multiple working conditions, multiple actuators, and large flow limits action adjustment and control. Through a pilot pressure control circuit, hydraulically operated valves can adjust pressure or direction more effectively. A recent study proposed a two-stage pressure control method based on multistage orifices and solenoid valves. The requirements of the number and diameter ratio of short orifices in the series to realize the two-stage pressure control were theoretically analyzed. Scheme design and experiment were carried out. The influence of structures of complex flow channel and solenoid valve on the higher or lower pilot control pressure was considered in the experiment. The method was experimentally verified and successfully applied in a turbine electrohydraulic control system with lower maintenance costs, making the system more reliable in the case of electrical failure. Research results provide insight into pilot pressure control in fluid systems using multistage orifices to achieve either higher or lower pressure. In addition, it has important guiding significance for the design of valves or engineering systems based on pilot hydraulic pressure.https://www.mdpi.com/2076-3417/11/2/589pilot pressurepressure controlmultistage orificesreliabilitycomplex flow channel |
| spellingShingle | Junxia Gao Fenghe Wu Jun Tang Zichun Geng A Method of Two-Stage Pressure Control Based on Multistage Orifices Applied Sciences pilot pressure pressure control multistage orifices reliability complex flow channel |
| title | A Method of Two-Stage Pressure Control Based on Multistage Orifices |
| title_full | A Method of Two-Stage Pressure Control Based on Multistage Orifices |
| title_fullStr | A Method of Two-Stage Pressure Control Based on Multistage Orifices |
| title_full_unstemmed | A Method of Two-Stage Pressure Control Based on Multistage Orifices |
| title_short | A Method of Two-Stage Pressure Control Based on Multistage Orifices |
| title_sort | method of two stage pressure control based on multistage orifices |
| topic | pilot pressure pressure control multistage orifices reliability complex flow channel |
| url | https://www.mdpi.com/2076-3417/11/2/589 |
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