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Design of a 70 MPa Two-Way Proportional cartridge valve for Large-Size Hydraulic Forging Press

Journal of Beijing Institute of Technology 2020年第2期29卷 260-272页

作者： Jing Yao Yuxin Yin Zhaosheng Dong Yuantong He School of Mechanical Engineering Yanshan UniversityQinhuangdao 066004China School of Mechanical Engineering Nanjing Institute of TechnologyNanjing 211167China

For an ultra-high-pressure hydraulic transmission system of a large-size hydraulic forging press(LHFP),a 70 MPa two-way proportional cartridge valve has been developed to improve the power weight ratio of the hydraulic forging *** this study,a nominal diameter 25 mm(DN25)cartridge valve is taken as the research object.A longer concentric cylindrical annular gap is set to effectively prevent the ultra-high-pressure oil from flowing to the pilot stage and a seated valve structure is set to form the linear sealing zone in the closing state of the main valve ***-displacement feedback is adopted to realize precise control of the main valve port flow and the features of this valve are *** order to verify the strength and static and dynamic characteristics,the finite element model and a simulation model of the valve proposed above are *** is a little deformation which does not affect the main valve spool movement,and the main valve port flow meets the design ***,the prototype of DN2570 TPCV is manufactured and a ultra-high-pressure experimental platform is *** experimental results show that the DN2570 TPCV designed in this study has the advantage of fast response,high control precision,and low leakage,which can meet the requirements of LHFPs.

关键词： ultra-high-pressure cartridge valve large-size hydraulic forging press(LHFP) proportional control modelling

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Lateral Force Characteristics of cartridge valve Core

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Journal of Shanghai Jiaotong university(Science) 2023年第5期28卷 604-610页

作者：韩贺永张建茹潘思意李玉贵马立峰刘实睿 School of Mechanical Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China School of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China China Petroleum Pipeline Research Institute Co. Ltd.Langfang 065000HebeiChina

The flow field of eccentric conical crevices is formed into the working process of hydraulic ***, the valve core is readily subjected to a large lateral force which affects the dynamic response ***, a new type of cartridge valve core structure is proposed to solve this problem. The numerical simulationmethod is applied to analyze the flow characteristics of clearance flow field on velocity distribution, pressuredistribution, valve core motion speed, and leakage. The results using computational fluid dynamics (CFD) showthat the guide groove is set on the surface of the cartridge valve core, increasing the connecting length of thevalve core, forming a uniform radial pressure distribution and velocity distribution, effectively reducing the lateralforce, and at the same time ensuring that the leak is not too big. These findings provide theoretical guidance anda basis for optimizing cartridge valve to reduce the occurrence of jamming and improve the response frequency.

关键词： cartridge valve guide groove lateral force finite element simulation

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