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            阀门网?#20449;擔?/span>提供专业的截止阀的选型信息、阀门行业资讯、工程选型截止阀的选型图片和相关文章。

            中国阀门网 > 工程选型 >> 截止阀的选型

            截止阀的选型

            截止阀的选型应用

                截止阀的阀杆轴线与阀座密封面垂直。阀杆开启或关闭行程相?#36234;?#30701;,并具有非常可靠的切断动作,使得这种阀门非常适合作为介质的切断或调节及节流使用。

            截止阀的选型

                截止阀的阀瓣一旦处于开启状况,截止阀的阀座和阀瓣密封面之间就不再的接触,并具有非常可靠的切断动作,?#31995;?#36825;种阀门非常适合作为介质的切断或调节及节流使用。

                截止阀一旦处于开启状态,截止阀的阀座和阀瓣密封面之间就不再有接触,因而截止阀的密封面机?#30340;?#25439;较小,由于大部分截止阀的阀座和阀?#29935;?#36739;容易修理或更换密封元件时无需把整个阀门从管线上拆下来,这对于阀门和管线焊接成一体的场合是很适用的。介质通过此类阀门时的流动方向发生了变化,因此截止阀的流动阻力较高于其它阀门。

                常用的截止阀有以下几种:

            1)角式截止阀;在角式截止阀中,流体只需改变一次方向,以致于通过此阀门的压力降比常规结构的截止阀小。

            2)直流式截止阀;在直流式或Y形截止阀中,阀体的流道与主流道成一斜线,这样流动状态的破坏程度比常规截止阀要小,因而通过阀门的压力损失也相应的小了。

            3)柱塞式截止阀:这?#20013;?#24335;的截止阀是常规截止阀的变型。在该阀门中,阀瓣和阀座通常是基于柱塞原理设计的。阀瓣磨光成柱塞与阀杆相连接,密封是由套在柱塞上的两个弹性密封圈实现的。两个弹性密封圈用一个套环隔开,并通过由阀盖螺母施加在阀盖上的载荷把柱塞周围的密封圈压牢。弹性密封圈能够更换,可以采用各种各样的材?#29616;?#25104;,该阀门主要用于“开”或者“关”,但是备有特制形式的柱塞或特殊的套环,也可以用于调节流量。

            关键词:选型       

            转载须注明:

            本文来自:阀门网.com

            文章标题:截止阀的选型

            本文地址:http://www.gnst.icu/SelectUsed/jiezhifa-xuanxing.html

            用户意见和建议   ↑TOP

            1.用户对截止阀的选型有任?#25105;?#35265;和建议的话

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            4.阀门业主单位需要阀门选型要求,请?#24471;?#35814;细环境工况条件。

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