船舶管舾装精度控制方法研究

发布时间：2019-05-24 07:11

【摘要】：现今,国内先进船厂开始推行造船精度管理，但它所提及的精度管理还都局限在船体领域，而在造船生产过程中，常常会出现舾装件施工与船体建造之间的矛盾。造船精度管理应该是全方位和系统的，在考虑船体精度管理的同时也要兼顾舾装精度的匹配，舾装精度管理势在必行。根据现行船体精度管理体系，结合国外先进船厂舾装精度管理模式，本文针对船舶舾装中最重要的管舾装进行精度控制研究。与船体建造类似，管舾装生产流水线也从加工制作开始，以弯管回弹现象为研究背景，理论分析弯管回弹的原理，通过一定的试验验证，总结出回弹规律，对管子制作本身的精度进行弹性控制。从管子单件制作到单元组管线的安装定位都需要精度控制标准，依托国外先进船厂的管理经验和控制基准及大量的实例验证，归纳出适用于我国造船生产模式的管舾装精度控制基准书，设计并优化舾装精度测量检查表，构建一个较为完整的船厂精度管理体系。实施管舾装精度控制的难点在于安装过程，以一艘油轮的双层底分段为研究实例，根据设计的舾装精度测量检查表实地对分段上的管线安装位置进行定位监控，分析研究管线与船体分段的匹配现状。海工装备在建造时对精度的要求比民用船舶更加严格，以一座自升式钻井平台的桩靴冲桩管开口进行的精度定位方法来说明精度控制的测量与应用。本文主要目的是通过对管舾装精度控制研究来减少安装时合拢管的使用、避免硬装配带来的安全隐患和达到管舾装与船体精度管理的完美匹配，，然而在现阶段合拢管的使用是必然的，管舾装能否成功对接很大程度上取决于合拢管的制作精度，而“合拢管再现机系统”的成功应用使得合拢管制作精度大幅度提高，实现由人工制作向半自动、数字模拟制作转换，减少耗材、劳动力和时间的消耗。本文的创新点在于编制了管舾装的制作和安装精度基准，设计管舾装的精度测量检查表，结合船体精度测量表，形成一个较为全面的精度管理框架体系；应用MarineG2软件模拟导出管线的实际制作安装精度问题，对桩靴冲桩管开孔进行精度控制，指导现场一次性定位。
[Abstract]:Nowadays, advanced shipyards in China begin to carry out shipyard precision management, but the precision management mentioned by it is still limited to the hull field, and in the process of Shipbuilding production, there is often a contradiction between outfitting construction and hull construction. The accuracy management of Shipbuilding should be omni-directional and systematic. It is imperative to consider the matching of outfitting accuracy while considering hull precision management. According to the current hull accuracy management system and the foreign advanced shipyard outfitting accuracy management mode, this paper studies the accuracy control of the most important pipe outfitting in ship outfitting. Similar to the hull construction, the pipe outfitting production line also starts from the processing and manufacture. Taking the springback phenomenon of the curved pipe as the research background, the principle of the springback of the curved pipe is analyzed theoretically, and the springback law is summarized through certain experimental verification. Elastic control of the precision of pipe making itself. The precision control standard is needed from the manufacture of single pipe to the installation and positioning of unit group pipeline. Based on the management experience and control benchmark of foreign advanced shipyard and a large number of examples, The precision control datum of pipe outfitting suitable for shipyard production mode in China is summarized, the inspection table of outfitting accuracy measurement is designed and optimized, and a relatively complete shipyard accuracy management system is constructed. The difficulty of implementing pipe outfitting accuracy control lies in the installation process. Taking the double bottom section of an oil tanker as an example, the installation position of the pipeline on the segment is located and monitored according to the designed outfitting accuracy measurement and inspection table. The matching status of pipeline and hull segment is analyzed and studied. The precision requirement of marine equipment is more stringent than that of civil ships in the construction of marine equipment. The precision positioning method of pile shoe punching pile pipe opening of a Jack-up drilling platform is used to illustrate the measurement and application of precision control. The main purpose of this paper is to reduce the use of closed pipe during installation, avoid the hidden danger of safety caused by hard assembly and achieve the perfect matching between pipe outfitting and hull precision management by studying the precision control of pipe outfitting. However, at this stage, the use of closed pipe is inevitable. Whether the pipe outfitting can be successfully docked depends to a large extent on the making accuracy of closed pipe, and the successful application of "closed pipe reproducing machine system" greatly improves the precision of closed pipe making. Realize the conversion from manual production to semi-automatic, digital analog production, reduce the consumption of consumables, labor and time. The innovation of this paper is to compile the precision benchmark of pipe outfitting, to design the precision measurement and inspection table of pipe outfitting, and to form a more comprehensive precision management framework system combined with hull precision measurement scale. The accuracy of actual manufacture and installation of pipeline is simulated and derived by MarineG2 software, and the accuracy control of pile shoe punching pile pipe hole is carried out to guide the one-time positioning of the site.
【学位授予单位】：江苏科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：U673;F426.474

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