三代核电核岛主管道坡口加工研究

发布时间：2018-02-10 19:05

本文关键词： 三代核电主管道坡口加工实切线　出处：《施工技术》2017年S1期 　论文类型：期刊论文

【摘要】：三代核电的主管道安装在整个三代核电建造过程中具有重要意义,属于反应堆冷却剂系统(RCS)系统移交里程碑上最为关键的一环,而坡口加工属于关键一步。在通过激光建模等一系列手段得到主管道SG侧实切线(FFL)位置后,要分析坡口加工工序的逻辑,来尽量保证满足坡口位置切割的准确性,主管道的坡口加工需要分两个阶段进行。第一阶段是主管道冷、热段RV端坡口,需在预先建造好的主管道专用加工车间内加工完成;第二阶段是主管道冷、热段SG端坡口,需要在主管道与RV焊接完成之后,蒸汽发生器SG(含主泵泵壳)吊装就位之前,在CA01内进行。完成逻辑分析后对通过结合主管道安装来优化切割步骤,在实际切割线两边分别标出粗切线,通过逐步切割的方式保证主管道切割不能有任何失误。
[Abstract]:The installation of the main pipeline of the third generation nuclear power plant is of great significance throughout the construction of the third generation nuclear power plant, and is the most critical link in the milestone of the handover of the reactor coolant system / RCSs system. The groove machining is a key step. After obtaining the FFLL position of the SG side of the main pipeline by a series of means such as laser modeling, we should analyze the logic of the groove processing procedure to ensure the accuracy of the groove position cutting as far as possible. The groove processing of the main pipeline needs to be carried out in two stages. The first stage is the main pipe cooling, the hot section RV end groove, which needs to be processed in the pre-built special processing workshop for the main pipeline; the second stage is the main pipe cooling, the hot section SG end groove, the second stage is the main pipe cooling, the hot section SG end groove, After the main pipeline and RV welding are completed, the steam generator SGG (including the main pump shell) should be hoisted and placed in the CA01. After the logical analysis is completed, the cutting steps should be optimized by combining the main pipeline installation, Rough tangent lines are marked on both sides of the actual cutting line, and no errors in the main pipe cutting are ensured by the method of gradual cutting.
【作者单位】：国核工程有限公司;
【分类号】：TM623.4

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