Flow characteristics analysis of constant flow control valve based on AMESim

WANG Jia-yi, LIU Xin-hui, WANG Zhan, CHEN Jin-shi, HAN Ya-fang, WANG Yu-qi

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J Jilin Univ Eng Tech Ed ›› 2023, Vol. 53 ›› Issue (09) : 2499-2507. DOI: 10.13229/j.cnki.jdxbgxb.20211265

Flow characteristics analysis of constant flow control valve based on AMESim

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Abstract

To study the constant flow mechanism of the constant flow control valve， the influence of flow area and gradient on the characteristics of constant flow control valve are analyzed based on the actual structure of a certain type of valve. Firstly， the mathematical model， the control theoretical model and the transfer function block diagram of the dynamic system are established to quantitatively analyze the influence of these factors. Then the AMESim simulation model is established， and the influence mechanism of these factors on the steady-state and dynamic characteristics of the valve is analyzed. The reliability of the simulation model is verified by the experiment. The results show that there exists negative feedback between stages in the constant flow control valve， which compensates the pressure difference between the two sides of throttle and reduces the flow adjustment deviation. Adjusting the flow area of the pressure compensator can improve the steady-state characteristics of the constant flow control valve. Adjusting the flow area gradient of the pressure compensator can significantly improve the static and dynamic characteristics of the constant flow control valve.

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mechanical design / constant flow control valve / flow area / AMESim / steady-state characteristics / dynamic characteristis

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WANG Jia-yi , LIU Xin-hui , WANG Zhan , et al . Flow characteristics analysis of constant flow control valve based on AMESim. Journal of Jilin University(Engineering and Technology Edition). 2023, 53(09): 2499-2507 https://doi.org/10.13229/j.cnki.jdxbgxb.20211265

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