ZDL-PN16-C-25,ZDL-PN25-RL-50,ZDL-PN40-R-40,ZDL-PN64-P-32,自動循環泵保護閥
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產品名稱:
ZDL-PN16-C-25,ZDL-PN25-RL-50,ZDL-PN40-R-40,ZDL-PN64-P-32,自動循環泵保護閥
產品型號:
ZDL-PN16-C-25,ZDL-PN25-RL-50,ZDL-PN40-R-40,ZDL-PN6
產品展商:
其它品牌
產品價格:
0.00 元
簡單介紹
ZDL-PN16-C-25,ZDL-PN25-RL-50,ZDL-PN40-R-40,ZDL-PN64-P-32,自動循環泵保護閥
ZDL-PN16-C-25,ZDL-PN25-RL-50,ZDL-PN40-R-40,ZDL-PN64-P-32,自動循環泵保護閥的詳細介紹
ZDL-PN16-C-25,ZDL-PN25-RL-50,ZDL-PN40-R-40,ZDL-PN64-P-32,自動循環泵保護閥
概述
ZDL系列自動循環泵保護閥是一種泵保護裝置。它自動對離心泵(尤其輸送熱水介質)在低負荷運行時泵體內可能出現的部分氣蝕損害和不穩定進行保護。一旦泵流量低于預設流量,旁路完全打開以確保泵所需*小流量。即使主路完全關閉,即主路流量為零,*小流量也可以通過旁路進行自動循環。壓力通過旁路中的集成多級節流減壓閥降低。ZDL系列有適合中等壓差的旁路,壓差*大至6MPa,具體選擇由工廠確定。獨特的L型旁同可消除高速流動介質產生的噪音,防止氣蝕。
特點
多孔籠式旁路,低噪音,適用于中低壓工況。
鍛造閥體,可選用碳鋼或不銹鋼材質等。
標準型旁路帶止回功能,*大工作壓差至6MPa。
帶有文丘里流道的主路止回結構,適應復雜工況。
壓力等級PN16-PN100,口徑DN25-DN500。
可選擇增加手動旁路操作功能,以備故障時使用。
尺寸壓力范圍
作用原理
根據感應到的主路流量不同,自動再循環閥的主閥瓣止回錐將自動移動到某一個位置上。同時主閥瓣帶動旁路閥杠桿,將主閥瓣動作傳遞至旁路,通過杠桿控制旁路閥閥瓣的位置,改變旁路的節流面積,從而控制通過旁路的流量。當主閥瓣回至閥座關閉狀態時,所有流量通過旁路回流。當主閥瓣上升至頂端位置時,旁路則完全關閉,所有泵的流量流向工藝系統。該閥集四種功能于一體。
流量感知:自動再循環閥的主閥瓣能自動感知工藝系統中的主流量,從而根據此流量來確定主閥瓣和旁路閥瓣的位置。
再循環控制:自動再循環閥可以將泵正常運行所需要的*小流量通過旁路吸入到存儲裝置中,調節水泵的H-Q特性,實現再循環。
旁路多級減壓:旁路控制系統能低噪音小磨損的把回流介質從泵出口的高壓減至適宜回流存儲裝置中的低壓
止回:自動再循環閥還具有止回閥的作用,防止液體回流到泵體中。標準型旁路帶止回功能。
其它旁路尺寸可按要求制作;*大的旁路流量取決于*大的Kv值。
ZDL-PN16-C-25,ZDL-PN16-C-32,ZDL-PN16-C-40,ZDL-PN16-C-50,ZDL-PN16-C-65,ZDL-PN16-C-80,
ZDL-PN16-C-100,ZDL-PN16-C-200,ZDL-PN16-C-250,ZDL-PN16-C-300,ZDL-PN16-C-350,ZDL-PN16-C-400,
ZDL-PN16-P-25,ZDL-PN16-P-32,ZDL-PN16-P-40,ZDL-PN16-P-50,ZDL-PN16-P-65,ZDL-PN16-P-80,
ZDL-PN16-P-100,ZDL-PN16-P-200,ZDL-PN16-P-250,ZDL-PN16-P-300,ZDL-PN16-P-350,ZDL-PN16-P-400,
ZDL-PN16-R-25,ZDL-PN16-R-32,ZDL-PN16-R-40,CCLAIR,ZDL-PN16-R-50,ZDL-PN16-R-65,ZDL-PN16-R-80,
ZDL-PN16-R-100,ZDL-PN16-R-200,ZDL-PN16-R-250,ZDL-PN16-R-300,ZDL-PN16-R-350,ZDL-PN16-R-400,
ZDL-PN16-LC-25,ZDL-PN16-LC-32,ZDL-PN16-LC-40,ZDL-PN16-LC-50,ZDL-PN16-LC-65,ZDL-PN16-LC-80,
ZDL-PN16-LC-100,ZDL-PN16-LC-200,ZDL-PN16-LC-250,ZDL-PN16-LC-300,ZDL-PN16-LC-350,ZDL-PN16-LC-400,
ZDL-PN16-PL-25,ZDL-PN16-PL-32,ZDL-PN16-PL-40,ZDL-PN16-PL-50,ZDL-PN16-PL-65,ZDL-PN16-PL-80,
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ZDL-PN16-RL-25,ZDL-PN16-RL-32,ZDL-PN16-RL-40,ZDL-PN16-RL-50,ZDL-PN16-RL-65,ZDL-PN16-RL-80,
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ZDL-PN25-R-25,ZDL-PN25-R-32,ZDL-PN25-R-40,ZDL-PN25-R-50,ZDL-PN25-R-65,ZDL-PN25-R-80,
ZDL-PN25-R-100,ZDL-PN25-R-200,ZDL-PN25-R-250,ZDL-PN25-R-300,ZDL-PN25-R-350,ZDL-PN25-R-400,
ZDL-PN25-LC-25,ZDL-PN25-LC-32,ZDL-PN25-LC-40,ZDL-PN25-LC-50,ZDL-PN25-LC-65,ZDL-PN25-LC-80,
ZDL-PN25-LC-100,ZDL-PN25-LC-200,ZDL-PN25-LC-250,ZDL-PN25-LC-300,ZDL-PN25-LC-350,ZDL-PN25-LC-400,
ZDL-PN25-PL-25,ZDL-PN25-PL-32,ZDL-PN25-PL-40,ZDL-PN25-PL-50,ZDL-PN25-PL-65,ZDL-PN25-PL-80,
ZDL-PN25-PL-100,ZDL-PN25-PL-200,ZDL-PN25-PL-250,ZDL-PN25-PL-300,ZDL-PN25-PL-350,ZDL-PN25-PL-400,
ZDL-PN25-RL-25,ZDL-PN25-RL-32,ZDL-PN25-RL-40,ZDL-PN25-RL-50,ZDL-PN25-RL-65,ZDL-PN25-RL-80,
ZDL-PN25-RL-100,ZDL-PN25-RL-200,ZDL-PN25-RL-250,ZDL-PN25-RL-300,ZDL-PN25-RL-350,ZDL-PN25-RL-400,
ZDL-PN40-C-25,ZDL-PN40-C-32,ZDL-PN40-C-40,ZDL-PN40-C-50,ZDL-PN40-C-65,ZDL-PN40-C-80,
ZDL-PN40-C-100,ZDL-PN40-C-200,ZDL-PN40-C-250,ZDL-PN40-C-300,ZDL-PN40-C-350,ZDL-PN40-C-400,
ZDL-PN40-P-25,ZDL-PN40-P-32,ZDL-PN40-P-40,ZDL-PN40-P-50,ZDL-PN40-P-65,ZDL-PN40-P-80,
ZDL-PN40-P-100,ZDL-PN40-P-200,ZDL-PN40-P-250,ZDL-PN40-P-300,ZDL-PN40-P-350,ZDL-PN40-P-400,
ZDL-PN40-R-25,ZDL-PN40-R-32,ZDL-PN40-R-40,ZDL-PN40-R-50,ZDL-PN40-R-65,ZDL-PN40-R-80,
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ZDL-PN64-C-25,ZDL-PN64-C-32,ZDL-PN64-C-40,ZDL-PN64-C-50,ZDL-PN64-C-65,ZDL-PN64-C-80,
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