Transactions of Materials and Heat Treatment

Title：Research on unloading rules based on volume increment uniform release

Authors： Sun Kang Wu Xin Si Yuxiao Hu chuan

Unit： Jiangxi University of Science and Technology Central South University

KeyWords： high pressure large flow hydraulic system unloading volume increment uniform release

ClassificationCode：TG315

year,vol(issue):pagenumber：2014,39(6):75-80

Abstract：

To improve the rapidity and stationarity of high pressure large flow hydraulic system and reduce the hydrodynamic shock during the course of unloading，the mechanism of unloading for hydraulic system was theoretically studied and analyzed. The unloading method on the principle of volume increment uniform release was analyzed. According to the rapidity and stationarity which were the principles to judge unloading system, an unloading method of high pressure large flow hydraulic system based on the principle of volume increment uniform release was theoretically proposed. Besides, the open control curve of unloading valve core was theoretically deduced by analyzing the system components. The hydraulic unloading effect was compared between the open displacement control curve of pressure relief valve core with the traditional control curve through simulation based on the principle of volume increment uniform release. The result shows that the stationarity of the former method is good，the unloading effect is better, and the hydrodynamic shock is reduced effectively, which demonstrates the new superiority of method.

Funds：

国家科技重大专项资助项目（2009ZX04005-031）；国家重点实验室开放基金资助项目（GZKF-201023）；江西省自然科学基金资助项目（20122BAB206030）

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