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                          明桿閘閥和暗桿閘閥優點和缺點?
                          明桿閘閥和暗桿閘閥優點和缺點?
                          來源:http://www.80-h.com/news.html | 作者:fanggong | 發布時間: 643天前 | 3602 次瀏覽 | 分享到:

                          明桿閘閥和暗桿閘閥優點和缺點?

                          閘閥是指關閉件(閘板)沿通路中心線的垂直方向移動的閥門。閘閥在管路中主要作切斷用。鍛鋼閘閥是使用很廣的一種閥門,一般口徑DN≥50mm的切斷裝置都選用它,有時口徑很小的切斷裝置也選用閘閥。閘閥作為一種級別較低的閥門,比較常見。按閥桿構造可以分為明桿閘閥和暗桿閘閥。


                          優點:流體阻力??;啟、閉所需力矩較??;可以使用在介質向兩方向流動的環網管路上,也就是說介質的流向不受限制;全開時,密封面受工作介質的沖蝕比截止閥??;形體結構比較簡單,制造工藝性較好;結構長度比較短。

                          缺點:外形尺寸和開啟高度較大,所需安裝的空間亦較大;在啟閉過程中,密封面人相對摩擦,摩損較大,甚至要在高溫時容易引起擦傷現象;一般閘閥都有兩個密封面,給給加工、研磨和維修增加了一些困難;啟閉時間長。

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