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本文从理论上阐述液动力对针阀的作用,并用试验加以验证。指出液动力阻碍针阀下落,其大小和针阀密封座面、针阀升程、针阀锥角等因素有关。
In this paper, the effect of hydrodynamic force on the needle valve is expounded theoretically and verified by experiments. Pointed out that the hydraulic impede the needle drop, the size and needle seal seat, needle valve lift, needle cone angle and other factors.