The invention relates to a ship air layer drag reduction air layer monitoring method. The method comprises the following operation steps that 1, a plurality of pulsating pressure sensors are installedon a ship bottom plate below all cabins of a ship body at intervals; 2, each pulsating pressure sensor is connected with a charge amplifier through a lead, and amplified signals are accessed to a high-speed acquisition and analysis processor; 3, a pulsating pressure signal 1/3 oct pressure total level and a 0-8 kHz frequency spectrum curve are displayed and stored in real time by utilizing a processor; and 4, whether the difference between the 1/3 oct pressure total level of the pulsating pressure signal in the/no air injection state and the 0-8 kHz frequency spectrum curve and the total level amplitude of the judgment standard exceeds a specified value such as AdB or not is compared, typical curve characteristics exist, and whether an air layer is formed at the bottom of the ship or notis determined. The method has the advantages of obvious characteristics, economy and reliability, can provide effective judgment input conditions for large-scale application of future air layer drag reduction energy-saving products, and provides judgment basis for intelligent control and air injection quantity adjustment of a ship air layer drag reduction self-adaptive control system.
本发明涉及一种船舶气层减阻气层监测方法,包括如下操作步骤:第一步:在船体各舱室下方的船底板上间隔安装多个脉动压力传感器;第二步:每个脉动压力传感器通过引线与电荷放大器连接,经放大后信号接入高速采集与分析处理器;第三步:利用处理器实时显示与保存脉动压力信号1/3oct压力总级与0‑8kHz频谱曲线;第四步:比较有无喷气状态下脉动压力信号1/3oct压力总级与0‑8kHz频谱曲线与判断标准的总级幅值区别是否超过指定值如AdB,且存在典型曲线特征,确认船底是否形成气层。特征明显、经济可靠,可为未来气层减阻节能产品大规模应用提供有效判断输入条件,为船舶气层减阻自适应控制系统智能控制与调节喷气量提供判断依据。
Ship air layer drag reduction air layer monitoring method
一种船舶气层减阻气层监测方法
20.11.2020
Patent
Elektronische Ressource
Chinesisch
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
Europäisches Patentamt | 2021
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