LNG接收站海水取水工艺系统设计要点探讨

Discussion on Design Essentials of Seawater Intake System of LNG Terminal

以某LNG接收站海水取水工程为例,对LNG接收站海水取水工程工艺系统设计要点进行了分析,从取水头部、海水取水泵布置方案比选、流道物理模型试验验证三方面进行了探讨,提出了取水头部的海水进口流速、取水水位等主要参数选取方式,通过大小泵搭配方案与全小泵方案进行比选,确定了大小泵搭配方案作为海水取水泵布置的推荐方案,并通过流道物理模型试验对推荐方案进行了验证,最终形成了合理的设计方案,为其他类似工程的设计提供了参考。

Based on the seawater intake works of a LNG terminal,the design essentials of the seawater intake system are analyzed and discussed through comparative selection of the layout plans of water-intake head,seawater-intake pump as well as physical model test of flow runner.Furthermore,the selection standard of main parameters is proposed,which covers seawater inlet flow rate and water intake level of the water intake head.The combination of large and small pumps is recommended after comparing it with the option of small pumps.The recommended one is verified through physical model test of flow runner,which leads to a reasonable design plan finally,and provides a reference for the design of other similar projects.