液氨氣動開關閥
簡稱：氨氣動開關閥，氣動緊急切斷閥，液氨緊急切斷閥，氣動氨開關閥
型號：QDQ421F-40C QDQ421F-40P
氣動液氨開關閥概述：
   液氨氣動開關閥 Liquid ammonia is special pneumatic switch valve也(ye)稱液氨(an)氣動截止閥(fa)(fa) Liquid ammonia valve，氣動緊急切(qie)斷(duan)閥(fa)(fa)，液氨(an)緊急切(qie)斷(duan)閥(fa)(fa)。屬(shu)于氨(an)庫切(qie)斷(duan)閥(fa)(fa) Ammonia cut-off valve系列氣動氨(an)開關閥(fa)(fa) Pneumatic ammonia dedicated switch valve產(chan)品，采(cai)用(yong)直(zhi)行程活(huo)塞(sai)氣動執(zhi)(zhi)行器與液氨(an)截止閥(fa)(fa)構成，通(tong)過防爆電磁閥(fa)(fa)控制氣源壓力輸(shu)入輸(shu)出(chu)對閥(fa)(fa)門執(zhi)(zhi)行開啟與關閉動作。

氣動開關閥性能特點：
1，工作壓力：1.6Mpa-4.0Mpa
2，工作溫度：-30～+80℃
3，驅動方式：氣動、氣動帶手動
4，連接方式：法蘭
5，制造標準：國標GB、JB、HG
6，頂部可安裝手動操作機構
7，配(pei)套附件：防爆電磁閥，空氣過(guo)濾減壓(ya)閥，信號反饋(kui)（行程開關(guan)），≥+80℃熔斷(duan)裝置

  液氨氣(qi)動(dong)開關閥(fa)(fa)(fa)(fa)結(jie)構(gou)形式屬(shu)單作用（常(chang)閉式）液氨氣(qi)動(dong)切斷(duan)閥(fa)(fa)(fa)(fa) Liquid ammonia cut-off valve，氣(qi)動(dong)液氨截止(zhi)閥(fa)(fa)(fa)(fa) Pneumatic liquid ammonia valve種(zhong)類，流體(ti)介(jie)質方(fang)向(xiang)高進(jin)低出(chu)，承壓(ya)位置在(zai)(zai)高處，介(jie)質從閥(fa)(fa)(fa)(fa)瓣上(shang)方(fang)向(xiang)下方(fang)輸(shu)出(chu)。軟材(cai)料(liao)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)圈(quan)嵌入閥(fa)(fa)(fa)(fa)瓣或用壓(ya)圈(quan)固(gu)定(ding)在(zai)(zai)閥(fa)(fa)(fa)(fa)瓣上(shang)。由于(yu)軟密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)截止(zhi)閥(fa)(fa)(fa)(fa)很(hen)容(rong)易實現密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)效(xiao)果(guo)，保證泄(xie)漏(lou)量為(wei)零，一旦處于(yu)開啟(qi)狀態，閥(fa)(fa)(fa)(fa)座和閥(fa)(fa)(fa)(fa)瓣密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)面(mian)(mian)之間就(jiu)不再(zai)有接觸(chu)，介(jie)質不會對密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)面(mian)(mian)產生沖(chong)刷(shua)，密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)面(mian)(mian)的磨損(sun)很(hen)小。此結(jie)構(gou)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)件由閥(fa)(fa)(fa)(fa)瓣、軟材(cai)料(liao)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)環(huan)(huan)、閥(fa)(fa)(fa)(fa)體(ti)金屬(shu)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)面(mian)(mian)組成，密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)環(huan)(huan)通過壓(ya)環(huan)(huan)固(gu)定(ding)在(zai)(zai)閥(fa)(fa)(fa)(fa)體(ti)上(shang)。雙(shuang)重密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)結(jie)構(gou)中金屬(shu)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)為(wei)軸(zhou)向(xiang)主密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)，軟密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)為(wei)徑(jing)向(xiang)副密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)，當金屬(shu)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)面(mian)(mian)出(chu)現泄(xie)漏(lou)時，泄(xie)漏(lou)的介(jie)質可被軟材(cai)料(liao)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)環(huan)(huan)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)，此軟材(cai)料(liao)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)環(huan)(huan)徑(jing)向(xiang)密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)結(jie)構(gou)可*避免軸(zhou)向(xiang)軟密(mi)(mi)(mi)(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)圈(quan)易被壓(ya)壞的缺陷。