埋地管道三层PE外覆盖层及其检测方法研究
Three Layer Protective Coating of Buried Pipeline and Its Inspection Method
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- DOI:
- 作者:
- 杨剑锋, 鞠舰波, 江志农
YANG Jian-feng
- 作者单位:
- 1. 北京化工大学安全科学与监控工程中心 北京 100029;
2. 北京化工大学安全科学与监控工程中心 北京 100029
Safety Science and Monitor Control Center, Beijing University of Chemical Engineering, Beijing 100029, China
- 关键词:
- 埋地钢质管道;三层PE;外覆盖层;组合检测;不开挖检测
buried steel pipeline; three layer external protective coating; combined inspection; in-suection without excavation
- 摘要:
- 文章介绍了埋地管道三层PE外覆盖层系统的构造参数和性能特点，论述了两种用于埋地钢质管道外覆盖层状况检测的方法，一种是多频管中电流法，另一种是DCVG/CIPS组合检测技术。分别介绍了两种方法的工作原理、操作方法和设备，并结合工程实例进行了说明。这些方法和设备可分别或同时用于管道不开挖检测防腐层破损点的位置以及漏点大小。
In this paper, the constitutive parameters and characteristics of three layer external pro-tective coating of buried steel pipeline are introduced.Two methods used for inspecting external coatingstate of buried steel pipeline are discussed.One is multi-frequency current inspecting technique,and an-other is combined DCVG/LIPS inspecting technique.The principle, operation method and equipmentused for the external inspection are described associated with the practical engineering example.The semethods and equipment can be used in respective or combined mode to inspect the position and size ofholiday of the protective coating without excavation.2006,4(4): 42-45 收稿日期：2005-10-15分类号：TE973.3基金项目：国家“十五”科技攻关项目(2004BA803B03)作者简介：杨剑锋(1967— ），男，辽宁鞍山人，1992年毕业于天津大学，获得硕士学位，副研究员，现从事过程装备与控制相关工作。