为了确保船舶的安全运行，需保证船舶配置的主机起动系统满足主机的要求，为此需对船舶主机起动系统进行分析与设计。针对压缩空气起动系统，基于压缩空气流体特性，对常用起动空气瓶容量计算公式进行修正，并以某船起动空气系统为例，对不同管路长度及流速下所需起动空气瓶最小容积进行研究与分析。分析结果可知，由于管系阻力的影响，柴油机最小起动压力必须进行修正，实际选取的起动空气瓶容积应比原公式计算的理论值更大。且流速作为影响总阻力的关键参数应该严格控制，建议压缩空气管路设计流速应比设计手册推荐流速更低，控制在8～12 m/s范围内。
In order to ensure the safe operation of ships, it is necessary to ensure that the ship's main diesel engine starting system meets the requirements of the main diesel engine. For this reason, it is necessary to analyze and design the ship's main diesel engine starting system. For the compressed air starting system, based on the characteristics of the compressed air fluid, the commonly used calculation formula for the capacity of the starting air bottle is revised. Taking a ship's starting air system as an example, the minimum volume of the starting air bottle required under different pipeline lengths and flow rates is studied and analyzed. From the calculation and analysis results, it can be known that due to the influence of the resistance of the piping system, the minimum starting pressure of the diesel engine must be revised, and the actual starting air bottle volume should be larger than the theoretical value calculated by the original formula. And the flow rate, as a key parameter affecting the total resistance, should be strictly controlled. It is recommended that the design flow rate of the compressed air pipeline should be lower than the suggestion of design guider, better controlled within the range of 8~12 m/s.
2022,44(11): 95-99 收稿日期：2021-07-21
DOI：10.3404/j.issn.1672-7649.2022.11.020
分类号：U664.81
作者简介：吴磊(1991-)，男，工程师，研究方向为船舶与海洋工程轮机设计
参考文献：
[1] 施振宝. 船舶压缩空气系统设计问题探讨[J]. 中国水运, 2016, 16(6): 119–122
[2] 王飞, 罗天园. 12V280船用柴油机空气起动系统设计[J]. 柴油机设计与制造, 2020, 26(4): 12–16
[3] 中国船级社. 钢制海船入级规范[M]. 北京: 人民交通出版, 2018.
[4] 中国造船工程学会，中国船舶工业集团公司，中国船舶重工集团公司. 船舶设计实用手册（轮机分册）[M]. 北京: 国防工业出版社, 2013.
[5] 孟成, 杨卫英, 万新斌. 船内货油转运管路阻力分析与改进设计[J]. 船舶, 2018(2): 39–45
[6] 刘文婷, 胡宝林. 谈管道沿程阻力系数的计算[J]. 中国棉花加工, 2016(6): 31–32
[7] 徐明. 压缩空气站设计手册[M]. 北京: 机械工业出版社, 1993.
[8] 鲁建, 白伯伦, 吴佳明. 20000TEU首制船舱底水输送泵问题分析[J]. 船海工程, 2019, 48(2): 51–53
[9] 徐芬, 陈云龙, 姜富世. 流量系数和当量长度在核电站阀门采购中的应用[J]. 阀门, 2017(2): 29–30,33
