相控阵超声检测在储气井内部检测中的实验研究

IF 0.5 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Materials Evaluation Pub Date : 2022-08-01 DOI:10.32548/2022.me-04278
Zheng Yanchun, Miao Cunjian, Hong Lixiang, Guo Weican
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引用次数: 0

摘要

地下压缩天然气储气井内、外表面腐蚀导致的壁厚减少是导致储气井失效的主要原因之一。因此,壁厚测量是定期检测中的一项重要工作。提出了一种基于井形的柱凸超声相控阵腐蚀检测技术,研制了一种512单元柱凸相控阵探头。以∅177 × 10.36 mm为例,研究了主动光圈、焦距、增益、门阈值等工艺参数的影响。此外,还对带有人工缺陷的样品井进行了参数优化实验。然后,根据优化后的参数,在测试平台上对井进行实验测试。结果表明,该方法对腐蚀缺陷检测具有较高的灵敏度和效率,能检测到∅2mm以上的点蚀和1mm宽的线蚀。
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An Experimental Study on Phased Array Ultrasonic Testing for Internal Inspection of Gas Storage Wells
A reduction in wall thickness, caused by corrosion, of the inner and outer surfaces of underground compressed natural gas storage wells is one of the main causes of failure. Therefore, taking wall thickness measurements is an important task during periodic inspection. This study proposes a corrosion detection technique based on the well’s shape using cylindrical convex ultrasonic phased array and develops a cylindrical convex phased array probe with 512 elements. Using an example well of ∅177 × 10.36 mm, the influences of process parameters such as active aperture, focal length, gain, and gate threshold are studied. In addition, an experiment is conducted on a sample well with artificial defects for parameters optimization. Next, experimental tests are carried out on the well at the test platform according to the optimized parameters. The results show that the proposed technique is of high sensitivity and efficiency for the detection of corrosion defects and is able to detect pitting corrosion of more than ∅2 mm and line corrosion of 1 mm width.
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来源期刊
Materials Evaluation
Materials Evaluation 工程技术-材料科学:表征与测试
CiteScore
0.90
自引率
16.70%
发文量
35
审稿时长
6-12 weeks
期刊介绍: Materials Evaluation publishes articles, news and features intended to increase the NDT practitioner’s knowledge of the science and technology involved in the field, bringing informative articles to the NDT public while highlighting the ongoing efforts of ASNT to fulfill its mission. M.E. is a peer-reviewed journal, relying on technicians and researchers to help grow and educate its members by providing relevant, cutting-edge and exclusive content containing technical details and discussions. The only periodical of its kind, M.E. is circulated to members and nonmember paid subscribers. The magazine is truly international in scope, with readers in over 90 nations. The journal’s history and archive reaches back to the earliest formative days of the Society.
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