Research and Application of Modification Scheme for Supports and Hangers of Special Pipes for OLE Project of Qinshan Nuclear Power Plant
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摘要: “核2、3级管道支吊架改造”是秦山核电厂运行许可证延续（OLE）工程改造中的一项。项目中有2类较为普遍的但改造难度较大的特殊支吊架：一类是与管道轴线不垂直的刚性支撑杆支架，另一类是使用“导向支架底板”的导向支架。为了满足改造设计要求和相关法规标准，设计了2种新的标准支吊架部件，并实现了标准化和系列化，与已有的标准系列部件配合可满足改造要求。2种改造设计方案解决了项目改造的难题，同时具有改造方便、普适性强、便于推广的优点。
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关键词:
- 运行许可证延续（OLE） /
- 支吊架改造 /
- 新型摩擦管夹 /
- 导向支架
Abstract: “Modification of nuclear level 2 and 3 pipe supports and hangers” is one of the modifications of Qinshan Nuclear Power Pant operation license extension (OLE) project. In the project, there are two kinds of special supports and hangers which are common but difficult to modify: one is the rigid bracing piece support not perpendicular to the pipe axis, the other is the guide support using the “guide support base plate”. In order to meet the modification design requirements and relevant laws and regulations, two new standard support and hanger components are designed, standardized and serialized, which can meet the modification requirements with the existing standard components. The two modification design schemes solve the problem of project modification, and have the advantages of convenient modification, strong universality and easy promotion. -
图 1 项目涉及到的2类典型支架示意图
Figure 1. Schematic Diagram of Two Types of Typical Supports Involved in the Project
图 3 标准根部与方管门型框或深弓形管夹板组合导向支架
Figure 3. Guide Support Combined with Standard Root and Square Tube Door Frame or Deep Bow Pipe Splint
图 4 螺栓预紧力对管夹的影响分析
Figure 4. Analysis of Influence of Bolt Pre-tightening Force on Pipe Clamp
图 5 标准根部钢板评定主应力云图及线性化路径
Figure 5. Principal Stress Nephogram and Linerization Path from Plate Mechanical Analysis of Standard Support Root
表 1 新型DN50摩擦管夹与支撑杆在不同夹角情况下评定结果
Table 1. Evaluation Results of New DN50 Friction Pipe Clamp and Bracing Piece Under Different Included Angles
管夹与支撑杆夹角θ 管道载荷与承载能力比值 180° 0.032 170° 0.061 160° 0.101 150° 0.138 140° 0.171 130° 0.199 120° 0.221 110° 0.237 100° 0.245 90° 0.246 
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表 2 部分DN200管道组合导向评定结果
Table 2. Evaluation Results of Some DN200 Pipe Combined Guide Supports
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