產品介紹 Prouduct introduction

　　高速透氣閥用于液貨船密封艙，在裝載、航行、壓載和卸載時，不用任何手動方式，自動控制液貨艙內的壓力，防止貨油艙超壓或真空。此外，還可在甲板上提供防火、防爆的自動保護。貨油艙出現的壓力或真空被施加在出氣或吸氣閥盤上，超過設定壓力時，正壓閥能自動打開排氣，負壓閥自動打開吸氣，當艙內外壓差被減少到原設定水平時，閥盤將瞬間自動復位。負壓閥工作時（即吸氣時），如果艙室外面發生火花，火花將在負壓閥的防火網上熄滅；正壓閥工作時，如果艙外有火花，火花將被正壓閥噴出的高速氣流吹離或吹滅。

　　The high velocity valve is installed on the liquid cargo ship and provides automatic control of pressure differential during loading,voyage,ballasting and de-ballasting without manual operation.Furthermore,the high velocity valve provides automatically fire proof and explosions proof on the deck.When the pressure of the cargo tank imposed on the disc exceeds the preset level,the pressure/vacuum valve will automatically open to exhaust or suction gas.When the vacuum valve is working,the flames out of the tank will be quenched in the flame trap.When the pressure valve works,the flame will be quenched by the high velocity airflow from the pressure valve.

技術參數 Parameters

型號 Type	設計開啟壓力 KPa Designed OpengingPressure		額定工作壓力 KPa Rated Working Pressure		流速 Velocity m/s	流量 M3/h Flow Rate
	正壓閥 Pressure value	負壓閥 Vacuum value	正壓閥 Pressure value	負壓閥 Vacuum value		正壓閥 Pressure value	負壓閥 Vacuum value
DN-50	14-21	-3.5	21	-7	≥30	800	400
DN-80						1000	700
DN-100						1200	800
DN-125						1600	1300
DN-150						2000	1300
DN-200						2300	2500

　　裝配法蘭標準：GB2506-2005
　　操作條件：
　　壓力設定值：14KPa-21KPa
　　真空設定值：-3.5KPa
　　Flange Standard:GB2506-2005
　　Service Condition:
　　Setting Pressure:14KPa-21KPa
　　Setting Vacuum:-3.5KPa
　　執行標準：ISO 15364-2007《船舶與海上技術-貨油輪壓力/真空閥》
　　MSC/C派對。677《阻止火焰進入油船液貨艙的裝置設計、試驗及安裝的修訂標準》
　　MSC.1/Circ.1324《關于化學品船阻止火焰進入液貨艙的裝置設計、試驗及安裝要求》
　　Standard:ISO 15364-2007 Ships and Marine Technology-Pressure/Vaccum Valves for Cargo Tanks.
　　MSC/circ.677 Revised Standards for the Design,Testing and Locating of Devices to Prevent the Passage of Flame into the Cargo Tankers.
　　MSC.1/Circ.1324 Amendments to the revised standards for the design,testing and location of devices to prevent the pessage of flame into cargo tank in tankers.