The invention discloses an automatic leakage alarm technology for a liquid cargo tank of a ship, and relates to the field of intelligent monitoring of ship safety. The automatic leakage alarm technology comprises the following steps: acquiring transient liquid level height of the liquid cargo tank by a cargo tank liquid level acquiring and transmitting unit, acquiring transverse and longitudinal dip angles of the ship by a ship shaking dip angle acquisition unit, correcting the liquid level height, and removing wind wave interference to obtain true liquid level height of the cargo tank; combining tank volume factor curve analysis and converting the true liquid level height of the cargo tank into real-time liquid cargo volume A of the cargo tank; defining an initial volume value B of liquidcargo of the cargo tank as 0 if a novel ship is not loaded, starting a liquid cargo loading and unloading pump each time loading and unloading after the ship operates normally, triggering a flow meter to acquire a flow signal of conveyed liquid cargo, and automatically correcting the initial volume B of the liquid cargo of the cargo tank; and continuously comparing and computing the real-time liquid cargo volume A of the cargo tank with the initial volume B of the liquid cargo of the cargo tank, and diagnosing whether the cargo tank has leakage or not by a comparing and leakage diagnosing unit. The automatic leakage alarm technology is quick and accurate in alarm, is slightly affected by a complex sea condition, and is suitable for various ship cargo tank structures.
本发明公开了一种船舶液货舱泄漏自动报警技术,涉及船舶安全智能监控领域。货舱液位采集变送单元采集船舶液货舱瞬态液位高度,船舶摇晃倾角采集单元采集船舶横纵倾角,对液位高度进行修正处理,去风浪干扰,获得货舱真实液位高度;结合舱容要素曲线解析,将货舱真实液位高度换算为货舱实时液货容量A;新船未装货,货舱液货容量初始值B为0,船舶进入正常营运后,每次装卸货时,启动液货装卸泵,触发流量计采集输送液货流量信号,自动修正货舱液货容量初始值B;货舱实时液货容量A和货舱液货容量初始值B不断地进行比较计算,比较与泄漏诊断单元诊断货舱是否发生泄漏。本发明报警迅速准确,受复杂海况影响小,适用于各种船舶货舱结构。
Automatic leakage alarm technology for liquid cargo tank of ship
一种船舶液货舱泄漏自动报警技术
2020-12-11
Patent
Electronic Resource
Chinese
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
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