——您现在访问的是:不锈钢紧固系统现货供应,希尔消防泵产品的常见用处,凸轮泵产品使用有哪些基本性能要求,水电站超声波流量计产品品质对比和选择方式网站地图
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非凡品质

1927 First variable stroke multi-cylinderreciprocating pump 第一个变冲程多气缸往复式泵

1923 First use of centrifugal pumps for oilpipeline and first automatic booster station 第一个将离心泵用于输油管道,并且建立第一个自动增压站

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隔膜泵的流量特性是指介质流过阀门的相对流量与位移(阀门的相对开度)间的关系,理想流量特性主要有直线、等百分比(对数)、抛物线和快开等4种,特性曲线和阀芯形状如图1和图2所示。常用的理想流量特性只有直线、等百分比(对数)、快开三种。抛物线流量特性介于直线和等百分比之间,一般可用等百分比特性来代替,而快开特性主要用于二位调节及程序控制中,因此隔膜泵特性的选择实际上是直线和等百分比流量特性的选择.