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JY41W-16P 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">不锈钢氧气截止阀中阀杆为升降阀杆，阀杆的总轴向力按升降阀杆的计算式计算，分别对阀门在关闭终状态和开启瞬时的轴向力进行计算，从而确定阀杆的大轴向力，在阀门关闭终状态时，JY41W-16P "Times New Roman";mso-hansi-font-family:"Times New Roman"">不锈钢氧气截止阀由于阀瓣的平衡式设计，使得阀瓣上，下部均受到介质的作用力。并且阀瓣上部与高压介质接触面积大于下部与介质接触面积，JY41W-16P "Times New Roman";mso-hansi-font-family:"Times New Roman"">不锈钢氧气截止阀因此在阀门趋于关闭状态下时，阀瓣在介质压力下形成密封状态，当介质总力大小超过所需密封力，JY41W-16P "Times New Roman";mso-hansi-font-family:"Times New Roman"">不锈钢氧气截止阀且在密封力允许的范围内时，阀杆不需要另行提供密封力即可完成阀门的密封，而当介质总力不足以提供所需密封力时，则由阀杆轴向力来补足。

1. mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">介质从阀瓣下方流入时，阀杆大轴向力在关闭终时产生，按下式计算：

mso-hansi-font-family:"Times New Roman"">式中 __ "Times New Roman"">关闭终时的阀杆总轴向力（N "Times New Roman"">）;

__ mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">密封力，即在密封面上形成密封比压所需的轴向力（N mso-hansi-font-family:"Times New Roman"">）;

__ mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">关闭时作用在阀瓣上的介质力（N mso-hansi-font-family:"Times New Roman"">）；

__ mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">阀杆与填料间的摩擦力（N mso-hansi-font-family:"Times New Roman"">）;

__ mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">阀杆螺纹的升角，对于梯形螺纹，可按螺纹直径和螺距查表

mso-hansi-font-family:"Times New Roman"">上海祝茂阀门阀门以人才、信息、质量、效率竭力满足阀门行业日新月异的发展需要。这一系列的质保体系是祝茂阀门阀门在设计、开发、制造、销售、服务于一体的后盾力量，确保了JY41W-16P "Times New Roman";mso-hansi-font-family:"Times New Roman"">不锈钢氧气截止阀的质量。公司主导产品有调节阀、减压阀、闸阀、截止阀、蝶阀、球阀、止回阀、隔膜阀、旋塞阀、柱塞阀、疏水阀、电站阀、美标阀、水力控制阀及气动、电动阀门等60 mso-hansi-font-family:"Times New Roman"">多种品种。祝茂阀门将继续发扬" "Times New Roman"">开拓、进取" "Times New Roman"">的创业精神。

mso-hansi-font-family:"Times New Roman"">祝茂阀门阀门可供应全新《JY41W-16P "Times New Roman"">不锈钢氧气截止阀》的产品信息，提供详细《JY41W-16P "Times New Roman"">不锈钢氧气截止阀》的图纸和说明，提供《JY41W-16P "Times New Roman"">不锈钢氧气截止阀》的参数，给您介绍《JY41W-16P "Times New Roman"">不锈钢氧气截止阀》的使用方法和提供《JY41W-16P "Times New Roman"">不锈钢氧气截止阀》的使用规格，如需要《JY41W-16P "Times New Roman"">不锈钢氧气截止阀》产品说明等相关信息, "Times New Roman"">可与本公司联系。