[1]杨茂森,梅 阳,杨 挺,等.场站立式分离器下封头内腐蚀高频导波检测[J].石油化工设备,2020,(06):17-22.[doi:10.3969/j.issn.1000-7466.2020.06.004]
 YANG Mao-sen,MEI Yang,YANG Ting,et al.High Frequency Ultrasonic Guided Wave Detection of Corrosion in the Bottom Head of Vertical Separator[J].Petro-Chemical Equipment,2020,(06):17-22.[doi:10.3969/j.issn.1000-7466.2020.06.004]
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场站立式分离器下封头内腐蚀高频导波检测()
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石油化工设备[ISSN:1000-7466/CN:62-1078/TQ]

卷:
期数:
2020年06期
页码:
17-22
栏目:
试验研究
出版日期:
2020-12-30

文章信息/Info

Title:
High Frequency Ultrasonic Guided Wave Detection of Corrosion in the Bottom Head of Vertical Separator
作者:
杨茂森1梅 阳1杨 挺2干 兵1王平杰1
1.四川省特种设备检验研究院,四川 成都 610061;2.西藏自治区特种设备检测所,西藏 拉萨 850000
Author(s):
YANG Mao-sen1MEI Yang1YANG Ting2GAN Bing1WANG Ping-jie1
1.Sichuan Provincial Special Equipment Inspection and Research Institute,Chengdu 610061,China;2.Tibet Autonomous Region Special Equipment Inspection Institute,Lhasa 850000,China
关键词:
下封头分离器内腐蚀高频导波检测
Keywords:
bottom headseparatorinternal corrosionhigh frequency ultrasonic guided wave detection
分类号:
TQ055.807;TG115.28
DOI:
10.3969/j.issn.1000-7466.2020.06.004
文献标志码:
A
摘要:
针对天然气场站裙座结构的立式分离器下封头易发生腐蚀破坏,但因特殊结构限制长期无法通过直接接触进行壁厚检测的问题,提出采用高频导波技术进行内腐蚀检测。通过对高频导波频散特性和下封头结构特点等进行分析,确定导波能够有效覆盖下封头区域并建立了内腐蚀检测模型。制作了人工对比试块以确定缺陷的当量大小,结合探头编码器以及始波、缺陷波、接管反射波这3个特征信号的相对位置实现了对缺陷定位和尺寸参数的测量。结果表明,高频导波技术的非直接耦合接触检测特点能较好克服裙座结构对立式分离器下封头内腐蚀检测的限制,现场检测效率高,能够满足现场要求。
Abstract:
In view of the problem that the bottom head of the vertical separator with skirt structure of the natural gas station is prone to corrosion damage and the wall thickness cannot be detected for a long time,a method of internal corrosion detection using high frequency ultrasonic guided waves was proposed. By analyzing the dispersion characteristics of the high frequency ultrasonic guided waves and the structural characteristics of the bottom head,it is considered that the guided wave can effectively cover the bottom head and the internal corrosion detection model was established. The artificial comparison test blocks were made to determine the equivalent size of the defects,combined with the encoder and the relative positions of the initial wave,defect wave and nozzle reflection wave,the defect location and size parameters were measured. The results show that the characteristics of non-direct coupling contact detection of high frequency ultrasonic guided waves are effective and efficient for the corrosion detection in the bottom head of vertical separator with skirt structure, and can meet the requirements of field detection.

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更新日期/Last Update: 1900-01-01