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DJQ系列型低温紧急切断阀

DJQ系列型低温紧急切断阀

DJQ electro emergency cut-off valve at low temperature

此类型专用低温紧急切断阀适用于低温贮槽上切断流通介质,特别是在出现火情故障时能及时切断介质。广泛用于LNG、液态乙烯及其它低温介质,具有体积小、重量轻、密封可靠、紧急切断迅速可靠和防静电的特点。

This type is special emergency cut-off valve is suitable for low temperature storage tank at low temperature on cut off circulation medium, especially in the event of a fire failure can promptly cut off the medium. Widely used in LNG, ethylene and other low temperature liquid medium, has small volume, light weight, reliable sealing, reliable emergency stop quickly and anti-static characteristics.

主要技术参数

Main technical parameters

公称压力/Nominal pressure:4.0MPa

设计温度/Design temperature:-196℃~+70℃

适用介质/Applicable medium:LNG 、LO2、LN2、LAr

连接方式/Connection method:插焊

公称通径/Nominal diameter:25mm~50mm

强度试验压力/Strength test pressure:4.0MPa

气密性试验压力/Air tightness test pressure:1.6MPa

方向密封试验压力/direction of seal test pressure:0.4MPa

气缸气源压力/Air pressure cylinder:0.4~0.6MPa

紧急切断温度/Emergency cut-off temperature:+70℃

紧急切断时间/Emergency cut-off time:<2秒

主要零部件名称
Main components name
材料
Materials
阀体/Valve body ZG0Cr18Ni9
阀瓣/Valve disc 0Cr18Ni9Ti
阀盖/Valve cover ZG0Cr18Ni9
阀杆/Valve stem 0Cr18Ni9
主密封件/Main seal PTFE或PCTFE
气缸/cylinder 铸铝
支架/stents 铸铝
型号/Model 主要外形和连接尺寸 Main form and the connection size (mm) 重量 Weight
H H1 D0 D1 D B W1 W2 M (kg)
DJQ-20P 189 478 Ф20 Ф25.5 Ф100 8 80 Ф130 Rc¼ 7.2
DJQ-25P 240 530 Ф25 Ф32.5 Ф100 8 90 Ф130 Rc¼ 7.7
DJQ-32P 250 489 Ф32 Ф38.5 Ф100 8 105 Ф130 Rc¼ 7.3
DJQ-40P 227 567 Ф40 Ф45.5 Ф125 8 120 Ф160 Rc¼ 13.2
DJQ-50P 230 570 Ф50 Ф57.5 Ф125 10 140 Ф160 Rc¼ 14.5