應征優秀論文評選公示（4）

特種設備無損檢測技術優秀論文評選公示（4）

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【046】Improvement and application of PFC-2000 online pipeline detector

SHAN Hong-xiang WU Wan-zhi LIU Xiao-dong

（PetroChina Daqing Inspecting and Research Center for Boilers and Pressure Vessels，

Daqing 163453,China）

Abstract：The wall thickness and strength of pipeline can be reduced by corrosion and other factors during using, which may lead to leakage and other accidents. In conventional pipeline detection, the wall thickness is detected by thickness gauge. As the heat insulation layer of detection area has to be removed during detecting, the conventional pipeline detection method has the character of long detection period, high cost and limited detection area. By using PFC-2000 ray pipeline detector, pipeline can be rapidly detected by scan mode without remove heat insulation layer. And, the detection results have nothing to do with the media in the pipeline. By PFC-2000 ray pipeline detector, can location corrosion point and comprehensive evaluation the pipeline corrosion condition. The application scope and detection accuracy of PFC-2000 ray pipeline detector were developed by experiment research and technology upgrade, which lead to the development of pipeline detection technique.

Keywords：PFC-2000；ray；heat insulation layer；pipeline corrosion detection

【047】氣瓶型式試驗中的無損檢測技術運用

李昱，徐維普

上海市特種設備監督檢驗技術研究院，上海200333

摘　要：本文介紹了氣瓶型式試驗中所涉及到的無損檢測項目，對無損檢測方法的選用進行了介紹，對不同類型的氣瓶所規定的不同無損檢測方法進行了比較分析。

關鍵詞：氣瓶型式試驗；  無損檢測；  射線檢測； 超聲檢測；  磁粉檢測

【047】Using of NDT technology in type test of gas cylinders

LI Yu, XU Wei-pu

Shanghai Institute of Special Equipment Inspection & Technical Research, Shanghai 200333

Abstract：This article describes a cylinder type tests are related to the non-destructive testing project, the selection of non-destructive testing methods were introduced, and a comparative analysis of different types of cylinders under the non-destructive testing methods.

Keywords：type test of gas cyliners;  RT;  UT;  MT

【048】油管腐蝕的一種電磁檢測方法

彭學文1，付躍文2，傅恩敏1，夏 樑1，王 偉1

（1.蘇州熱工研究院有限公司 在役檢查中心，江蘇 蘇州  215004；

2.南昌航空大學 教育部無損檢測重點實驗室，江西 南昌  330063）

摘　要：針對目前油水井中在役油管使用狀況的檢測儀器和方法對油管外壁腐蝕檢測的局限性，提出了一種電磁檢測方法。該方法采用雙極性低頻脈沖激勵，取代了傳統的正弦激勵；采用了“時間切片法”對信號作時域分析，通過對油管模擬外壁腐蝕缺陷的檢測，取得了良好的效果；對油管壁厚計算值的誤差分析表明，計算值與實際值的相對誤差較小。試驗結果表明，該方法能夠檢測油管的外壁腐蝕，并能較準確地給出油管剩余壁厚的平均值。

關鍵詞：油管腐蝕缺陷；電磁檢測；雙極性低頻脈沖激勵；時間切片法

【048】A Magnetic Inspection Method for Tubing Corrosion

PENG Xue-wen1, FU Yue-wen2, FU En-min1, XIA Liang1, WANG Wei1

(1.In-service Inspection Center, Suzhou Nuclear Power Research Institute, Suzhou 215004, China;

2.Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang 330063, China)

Abstract：To overcome the shortcomings such as inspection instruments and methods for corrosion on outside wall of tubing which used in oil wells, a magnetic inspection method is present. Dual polarity low-frequency pulse is used to excite the coil instead of transitional sinusoidal signals. A time-domain analysis method called “time slicing method” is utilized for detected signals processing, good testing results are present by inspect for simulate outside corrosion on tubing; the relative errors between calculated value and the actual value of tubing wall thickness are very small. Experimental results show that corrosion on outside wall of tubing can be detected and the average value of residual wall thickness of tubing can be given more accurately by the method.

Keywords：tubing corrosion defects; electromagnetic inspection; dual polarity low-frequency pulse exciting; time slicing method

【049】碳鋼管束遠場渦流檢測缺陷識別與判定

魏培生 趙久國 朱省初

（中石油獨山子石化分公司壓力容器檢驗所  新疆獨山子  833600）

摘　要：遠場渦流檢測適用于鐵磁性型材和零件的檢測，能發現裂紋、減薄、凹坑等表面和近表面缺陷，可以確定缺陷的位置和相對尺寸，但難于判定缺陷的種類。本文介紹兩種缺陷分析方法，并分析對比試樣上缺陷波形的特征，應用于碳鋼換熱管束的檢測中。

關鍵詞：遠場渦流；缺陷；識別；判定

【049】Defect analysis method of Remote Field Eddy Current testing for ferromagnetic pipes inspection

Abstract：Remote field eddy current testing suitable for ferromagnetic profiles and parts inspection, can find crack, thinning, potholes surface and near surface defect, can determine defects and location of the relative size, but difficult to determine defects types. This paper describes two defect analysis method, comparative analysis on the characteristics of sample defect waveform and applied to the carbon steel heat-exchanger tubing of detection.

Keywords：Remote field eddy current, Defects, Identify, Judge

【050】相控陣檢測技術在球罐檢驗中的應用

吳煥利 1， 祝加軒1 ， 李軍2

1中國石油獨山子石化分公司壓力容器檢驗所,  2中國石油獨山子石化公司煉油廠鉗工車間,新疆獨山子, 833600)

摘　要：本文從一次將相控陣檢測技術應用在球罐焊縫檢測缺陷復檢過程中的應用，從而驗證了相控陣檢測技術在大型壓力容器檢測中的應用前景。作為一種可記錄超聲檢測方法，相信相控陣檢測技術以其檢測靈敏度高，檢測結果直觀、重復性好、可實時顯示、缺陷定量準確的的技術優勢被廣泛應用于特種設備行業。

關鍵詞：相控陣檢測技術；技術優勢； 球罐 ；檢驗

【051】相控陣檢測技術在壓力容器內壁點腐蝕檢測中的應用探討

吳煥利   魏培生  李海華

(中國石油獨山子石化分公司壓力容器檢驗所,  新疆獨山子, 833600)

摘　要：相控陣檢測技術是利用電子方式控制相控陣探頭合成的聲束來實現超聲波發射、接收的方法。相控陣檢測基本原理是：調整陣列換能器各陣元發射/接收的相位延遲，使得合成聲束在一定范圍內形成聚焦、偏轉等效果。它最突出的優點是：檢測靈敏度高，檢測結果直觀、重復性好、可實時顯示。本文就是利用相控陣檢測這一優點，采用0o線形掃差方式，探索研究壓力容器不開罐情況下實現內壁母材點腐蝕的檢測。

關鍵詞：相控陣檢測技術；  不開罐 ； 檢測 ； 內壁母材點腐蝕

【051】Phased array inspection technology in the pressure vessel wall pitting corrosion detection

WU Huan-li  WEI Pei-sheng  LI Hai-hua

(Petrochina Dushanzi Petrochemical Company of Dushanzi Pressure Vessel Inspection , Dushanzi Xinjiang ,833600)

Abstract：Phased array inspection technology is the use of electronic control of the synthesis of phased array probe beam to achieve ultrasonic transmitter and receiver of the method. Phased array testing is a basic principle: to adjust the array transducer array transmit / receive the phase delay, making synthetic beam forming focus within a certain range, deflection and other effects. It is the most prominent advantages are: high sensitivity, the test results directly, reproducible, real-time display. This article is the use of the advantage of phased array inspection, using 0 o linear sweep bad way to explore the open cans of pressure vessels in the inner wall of the base metal under the situation pitting corrosion detection.

Keywords：Ultrasonic phased array inspection technology; Can not open; detect;wall pitting corrosion of base metal

【052】超聲TOFD檢測中盲區計算與改善

蘆少翔1  呂鋒杰2   沈偉1

(1. 武漢三聯特種技術股份有限公司, 2. 武漢市鍋爐壓力容器檢驗研究所)

摘　要：超聲TOFD檢測技術做為一種先進的現代超聲成像技術，在我國已經得到越來越廣泛的應用，本文介紹了TOFD檢測中可能遇到的各種盲區產生的原理、形式和計算方法，并分析了探頭頻率、楔塊角度、晶片直徑、探頭中心距、脈沖寬度和焊縫形式等方面對盲區的影響，提出了在實際檢測中如何避免盲區而帶來漏檢的工藝措施。

關鍵詞：TOFD   超聲檢測   對接焊縫   盲區

【052】Calculation and improvement for the dead zone of TOFD testing

LU Shao-xiang 1   LV Feng-jie2    SHEN Wei1

1. Wuhan Sanlian Specific Technolgy CO.,LTD

2. Wuhan Institute of Boiler and Pressure Vessel Inspection

Abstract：It has been more and more widely used that TOFD ultrasonic inspection technology is an advanced modern ultrasonic imaging technology. The paper introduces the principle, feature and calculating method of the dead zone encountered in the TOFD inspection. Furthermore, it is analyzed that the effect caused by the probe frequency and dimension, the wedge angle, probe centre separation(PCS), pulse width and welding form etc on the dead zone. All kinds of techonogy measures is advised to avoid or reduce the dead zone in the actual inspection.

Keywords：Time of Flight Diffraction(TOFD)  Ultrasonic inspection   Butt weld joints Dead zone

【053】激勵參數對脈沖渦流缺陷檢測的仿真分析

周德強1,2，閆向陽1，尤麗華1

（1 江南大學 機械工程學院,江蘇 無錫 214122; 2無錫國盛精密模具有限公司 無錫 214024）

摘　要：脈沖渦流檢測技術是一種新興的電磁無損檢測技術，激勵參數與脈沖渦流檢測靈敏度、渦流滲透深度密切相關，選擇合適的激勵參數十分必要。采用COMSOL有限元仿真軟件建立了脈沖渦流圓柱型探頭的有限元模型，分析了不同幅值、不同占空比以及幅值與時間的乘積相同情況下對金屬部件表面下缺陷的檢測的影響。通過有限元仿真分析，提出增大激勵幅值可以提高檢測的靈敏度，而增大占空比可以提高渦流的滲透深度。本結論為工程實踐金屬內部缺陷檢測提供一定的參考價值。

關鍵詞：脈沖渦流；激勵參數；表面下缺陷；有限元分析；滲透深度

【053】Simulation on the defect Effect of Excitation Parameters Using Pulsed Eddy Current Testing

Zhou De-qiang1,2, Yan Xiang-yang1, You Li-hua1

（1. School of Mechanical Engineering, Jiangnan  University, Wuxi 214122, China; 2. Wuxi G.S Precision Tool CO.,LTD, Wuxi 214024）

Abstract：Pulsed eddy current (PEC) testing technology is a burgeoning electromagnetic nondestructive testing technology, eddy current penetration depth and the senstitivity have a close relationship with excitation parameters, appropriate excitation parameters is very necessary. The finite model of circular probe using COMSOL is built on subsurface defect with different peak of excitation, different duty cycle of excitation and the same integral of amplitude on the time. After simulation, increasing the peak of excitation can get better sensibility and the duty cycle can decide the penetration depth through data analysis of Matlab. The conclusion will provide some references on subsurface defect detection.

Keywords：Pulsed Eddy Current; excitation parameters; subsurface flaw; finite element analysis; duty cycle

【054】AP1000核電汽輪機汽缸徑向銷焊縫超聲波檢測研究

梁德柱，唐忠國

哈爾濱汽輪機廠有限責任公司

摘　要：

【055】埋地管道電磁外檢測技術研究

王維斌1，盧雙豪2，王殿學1，韓贊東2，林嵩1

（1 中國石油管道公司 河北廊坊；2 清華大學機械工程系 北京）

摘　要：由于現有管道外檢測技術在管道內壁檢測上存在盲區，基于有限元的電磁場仿真，提出了一種基于管道受激交變磁場的外檢測技術。ANSYS的仿真結果表明：合理配置的傳感器陣列所采集的磁場信號，經過頻譜分析可以有效辨別管道缺陷的內外壁位置，并實現對其管壁圓周位置、尺寸等參數的定量測量。

關鍵詞：埋地管道；有限元；電磁檢測

【056】窄脈沖探頭用高阻抗背襯的簡易制作方法

和世海

摘　要：窄脈沖探頭具有脈沖持續時間短、分辨率高等特點，能夠有效的對奧氏體不銹鋼進行超聲檢測。本文提出了一種簡易的高阻抗背襯制作方法，能夠得到較高的聲阻抗和聲衰減率。使用自制背襯對探頭進行聲匹配后，能夠有效降低探頭的脈沖周期，提高信噪比，改善探傷性能。

關鍵詞：高阻抗；窄脈沖；聲匹配；奧氏體不銹鋼

【056】A simple way to get high acoustic impedance and attenuation for Narrow-Pulse probe

Abstract：Austenitic stainless steel can be detected effective with ultrasonic method by Narrow-Pulse probe for it’s short duration of a pulse，high defect resolution.In this paper we find a simple way to get backing which have high acoustic impedance and attenuation of sound.Probe acoustically matched by self-made backing can improve inspection ability with lower pulse periods and increased signal to noise ratio（SNR）.

Keywords：high impedance；narrow-pulse；acoustically matched；Austenitic stainless steel

（待續）