目的 建立船舶充液管路水锤特性仿真模型,对管中水锤特性进行仿真研究。方法 基于AMESim软件,使用HL040管路模型,同时考虑管路中的容性、阻性、惯性以及流体传输的波动效应进行仿真。结果 在不同输水初压下,压力脉动峰值随管线长度的增加而增加,0.8 MPa初压时,DN25管道10 m管线长度压力峰值比2 m管线长度的峰值高出0.15 MPa,管路公称直径越大,增幅越明显。在相同输水初压下,压力脉动峰值随管径的增加而减小,0.8 MPa初压时,10 m长的DN25管道压力峰值为0.3 MPa,而DN15管道压力峰值为0.5 MPa。管道震荡频率与管线长度密切相关,长管道的震荡频率低于短管,而管道震荡稳定时间则受多种管道参数复合影响。结论 管道参数对水锤效应的影响规律是复杂的,只有充分分析管路系统,合理设计管道参数,才能达到防护水锤的目的。
Abstract
The work aims to establish a simulation model of water hammer characteristics in ship filling pipelines and conduct simulation research on the water hammer characteristics in pipelines. Based on AMESim software, the HL040 pipeline model was used to simulate the capacitance, resistance, inertia, and fluctuation effects of fluid transmission in the pipeline. The peak pressure pulsation increased with the length of the pipeline under different initial pressures. At an initial pressure of 0.8 MPa, the peak pressure of the DN25 pipeline with a length of 10 meters was 0.15 MPa higher than that with a length of 2 meters. The larger the nominal diameter of the pipeline, the more significant the increase. At the same initial water pressure, the peak pressure fluctuation decreased with the increase of pipe diameter. At an initial pressure of 0.8 MPa, the peak pressure of the 10 meter long DN25 pipeline was 0.3 MPa, while the peak pressure of the DN15 pipeline was 0.5 MPa. The frequency of pipeline oscillation was closely related to the length of the pipeline. The oscillation frequency of long pipelines was lower than that of short pipelines, while the stability time of pipeline oscillation was affected by multiple pipeline parameters. Overall, the impact of pipeline parameters on water hammer effect is complex. Only by fully analyzing the pipeline system and designing pipeline parameters reasonably can the purpose of protecting against water hammer be achieved.
关键词
船舶管路 /
充液管路 /
管道参数 /
调水压力 /
水锤特性 /
减振降噪
Key words
ship pipeline /
liquid filling pipeline /
pipeline parameters /
adjusting water pressure /
water hammer characteristics /
vibration and noise reduction
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