落锤对立柱与安全阀系统冲击的计算 |
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引用本文: | 李继周.落锤对立柱与安全阀系统冲击的计算[J].煤炭学报,1998,23(1):85-90. |
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作者姓名: | 李继周 |
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作者单位: | 煤炭科学研究总院北京开采研究所 |
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摘 要: | 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。
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关 键 词: | 立柱 安全阀 冲击地压 动态过程 落锤 |
CALCULATION OF DROP HAMMER IMPACT TO LEG AND SAFETY VALVE |
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Abstract: | 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. |
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Keywords: | leg safety valve pressure bump dynamic process |
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