质量优的4WE系列电磁换向阀生产厂家

 电磁阀作为自动化仪表的一种执行器，近年来用量急剧上升。星兴达帮您分析了电磁阀的主要特点，并对电磁阀技术发展的社会因素做点探讨。

  

  一、电磁阀的主要特点

  

  (1)系统简单，便接电脑，价格低谦。电磁阀本身结构简单，价格也低，比起调节阀等其它种类执行器易于安装维护。更显着的是所组成的自控系统简单得多，价格要低得多。由于电磁阀是开关信号控制，与工控计算机连接十分方便。在当今电脑普及，价格大幅下降的时代，

电磁阀的优势就更加明显。

  

  (2)外漏堵绝，内漏易控，使用。内外泄漏是危及的要素。其它自控阀通常将阀杆伸出，由电动、气动、液动执行机构控制阀芯的转动或移动。这都要解决长期动作阀杆动密封的外泄漏难题;唯有电磁阀是用电磁力作用于密封在隔磁套管内的铁芯完成，不存在动密封，所以外漏易堵绝。电动阀力矩控制不易，容易产生内漏,甚至拉断阀杆头部;电磁阀的结构型式容易控制内泄漏，直至降为零。所以，电磁阀使用特别，尤其适用于腐蚀性、

有毒或高低温的介质。

 

(3)动作快递，功率微小，外形轻巧。电磁阀响应时间可以短至几个毫秒，即使是先导式电

磁阀也可以控制在几十毫秒内。由于自成回路，比之其它自控阀反应更灵敏。设计得当的电

磁阀线圈功率消耗很低，属节能产品;还可做到只需触发动作，自动保持阀位，平时-点也

不耗电。电磁阀外形尺寸小，既节省空间，又轻巧美观。

 

(4)型号多样，用途广泛。电磁阀虽有先天不足，优点仍十分突出，所以就设计成多种多样

的产品，满足各种不同的需求，用途极为广泛。电磁阀技术的进步也都是围绕着如何克服先

天不足，如何更好地发挥固有优势而展开。

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