Dissertation > Industrial Technology > Machinery and Instrument Industry > Mechanical parts and gear > Hydraulic transmission > Hydraulic components > Hydraulic control valves

Characteristics Study and Flow Field Analysis on Double-Active Proportional Throttle Valve

Author LiuLiHua
Tutor KongXiangDong;ZhangHaiPing
School Yanshan University
Course Mechanical and Electronic Engineering
Keywords Cartridge Valves Proportional throttle AMESim simulation Stable dynamic characteristics Flow field analysis
CLC TH137.52
Type Master's thesis
Year 2010
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With the rapid development of China's nuclear power , shipbuilding , aerospace , automotive , and other industries have become increasingly demanding , heavy machinery and the level of modernization . The high-performance hydraulic components is an important factor affecting the development of modern heavy machinery . Cartridge proportional throttle developed a new type of hydraulic components is based on the development needs of heavy machinery . Cartridge proportional throttle valve with a flow of fast response , resistance to high pressure and long life and other advantages , to meet the requirements of modern heavy machinery hydraulic control system , and broad application prospects . The research has important theoretical significance and application value of its structure and static and dynamic characteristics . The subject Cartridge Proportional throttle at all levels between the feedback form typical displacement - force feedback , displacement - traffic feedback , three control type and displacement - electric feedback proportional throttle works and the structure of a detailed analysis , compare their performance structural advantages and disadvantages to determine dual active the proportional throttle as further research object . Dual Active proportional throttle mathematical model , using AMESim software , set up the simulation model , the simulation study its steady-state control characteristics and step response characteristics , and compared with the experimental results obtained dual active proportion throttle has good the homeostatic control characteristics and dynamic response performance conclusions and verify the correctness of the mathematical model and simulation model . Factors analyzed by simulation control oil pressure control chamber diameter throttle the dynamic characteristics of the dual- active proportion , laid the foundation for Cartridge proportional throttle performance optimization . 80 Path the dual active proportional throttle actual structural parameters , the establishment of the three-dimensional model and the two-dimensional model of the internal flow field numerical simulation using FLUENT software flow - differential pressure characteristics of the valve , and the test results comparative analysis . Simulation of the dual active proportional throttle dimensional flow field and the two-dimensional flow field , respectively, the valve at different opening pressure , flow rate distribution element of class structure parameters design and the flow channel optimized design provides theoretical basis .

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