J64B焊接角式氨用截止閥-截止閥圖片_電站閥_電氣動閥門_高溫高壓閥門_河南進典閥門有限公司不鏽鋼閥門_河南進典閥門有限公司_k5电竞网址

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J64B焊接角式氨用截止閥-截止閥圖片

産品分類: 截止閥
    型号:J64B
    口徑:15-50mm
    壓力:16.mpa-4.0mpa
    材質:碳鋼
    訂購熱線:0371-86591188

      J64B焊接式氨用截止閥詳細資料:

      氨用焊接截止閥經常要用到氧氣、氮氣、氫氣、氩氣等氣體。這些氣體一般都是貯存在專用的高壓氣體中。使用時通過氨用截止閥使氣體壓力降至實驗所需範圍,再經過其它控制閥門細調,使氣體輸入使用系統。最常用的減壓閥為氨用截止閥,簡稱氨用閥。

      焊接式氨用截止閥的使用方法

      (1)按使用要求的不同,氨氣減壓閥有許多規格。最高進口壓力大多為,最低進口壓力不小于出口壓力的2.5倍。出口壓力規格較多,一般為,最高出口壓力為。

      (2)  氨用截止閥應避免撞擊振動,不可與腐蝕性物質相接觸

      (3)氨用截止閥應嚴禁接觸油脂,以免發生火警事故。

      (4)停止工作時,應将減壓閥中餘氣放淨,然後擰松調節螺杆以免彈性元件長久受壓變形。

      (5)安裝氨氣減壓閥時應确定其連接規格是否與使用系統的接頭相一緻。氨用截止閥采用半球面連接,靠旋緊螺母使二者完全吻合。因此,在使用時應保持兩個半球面的光潔,以确保良好的氣密效果。安裝前可用高壓氣體吹除灰塵。必要時也可用聚四氟乙烯等材料作墊圈。

      氨用截止閥的外觀及工作原理

      氨用焊接截止閥的高壓腔與鋼瓶連接,低壓腔為氣體出口,并通往使用系統。高壓表的示值為鋼瓶内貯存氣體的壓力。低壓表的出口壓力可由調節螺杆控制。  使用時先打開鋼瓶總開關,然後順時針轉動低壓表壓力調節螺杆,使其壓縮主彈簧并傳動薄膜、彈簧墊塊和頂杆而将活門打開。這樣進口的高壓氣體由高壓室經節流減壓後進入低壓室,并經出口通往工作系統。轉動調節螺杆,改變活門開啟的高度,從而調節高壓氣體的通過量并達到所需的壓力值。  氨用截止閥都裝有安全閥。它是保護氨氣減壓閥并使之安全使用的裝置,也是氨氣減壓閥出現故障的信号裝置。如果由于活門墊、活門損壞或由于其它原因,導緻出口壓力自行上升并超過一定許可值時,安全閥會自動打開排氣。

      進典閥門有限公司網站:www.jdfam.com



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