落锤对立柱与安全阀系统冲击的计算

通过对人有不同伸出长度的立柱，安全阀系统作不同荷重，不同落体高度的落锤冲击计算，并进行分析，比较，得出：冲击引起液体压力升高某瞬间，立柱上，下端液体压差达７ＭＰａ，抗冲击安全阀应置立柱上端；立柱容纳液体越多越好；尺可能将活柱制成无活塞筒状；安全阀阀芯受液压作用面积应尽可能大，以提高其动态响应能力等重要结论。

CALCULATION OF DROP HAMMER IMPACT TO LEG AND SAFETY VALVE

Drop hammer impact calculation was conducted to legs of different length and safety valves with various loads and falling heights, and based on analyzing and comparing, it was obtained that: in the moment of hydraulic pressure increasing caused by impact, the pressure difference of liquid reached to 7MPa, impact resistance safety valve should fixed on top of leg; the more liquid contained in leg, the better;the cylinder type leg without piston should be made as for as possible; the spool area of safety valve should be as bigger as possible to increase dynamic response capability.