供應DG4V-5-2NJ-M-U-H6-20壓力閥單向閥特點
解決氣蝕問題應從求避免氣蝕的方法和耐氣蝕 的材料著手,避免氣蝕的方法有幾種。1.改進閥芯,閥座設計,使其具有合理的液流速度分布和壓力分布。如小流量調節閥采用狹長通道式閥芯、閥座。閥芯、閥座孔都有很小的錐度,適用于在恒定的上游壓力條件下精確地控制流量。由于這種 結構具確吸收 能量,減小氣蝕的功能,據資料報導,它曾用于4200公斤/厘米 2 的壓降下。2、在 條件充許的 情況下,在液流中充氣,以局部地或全部地消除低壓區。3。閥門串聯使用,以減小每個閥的壓降。4.使閥前后壓差低于該介質在調節閥入口溫度下產生汽蝕現象的最大允許壓差。5.介質在“流開”狀態下工作,允許壓差比“流閉”狀態大三倍多。
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