【摘要】：隨著我國大力推進(jìn)節(jié)約、環(huán)保能源的戰(zhàn)略,能源的充分利用受到高度重視。因此,在許多工業(yè)領(lǐng)域中都采用了帶包覆層結(jié)構(gòu)的管道。該種管道結(jié)構(gòu)可以防止其熱能損失,提高介質(zhì)轉(zhuǎn)化參數(shù),同時(shí)也可以減少受雨水等有害介質(zhì)腐蝕的風(fēng)險(xiǎn),提高管道運(yùn)行年限。然而隨著管道運(yùn)行年限的增長,管道腐蝕的產(chǎn)生在所難免,這給管道運(yùn)行帶來了重大的安全隱患,因而迫切地需要一項(xiàng)檢測技術(shù)對其進(jìn)行無損檢測,排除重大的安全事故。本文針對帶有鋁制包覆層鐵磁性管道腐蝕進(jìn)行了弱磁無損檢測理論分析及實(shí)驗(yàn)研究。首先開展了鐵磁性管道本體與帶有包覆層鐵磁性管道的檢測對比實(shí)驗(yàn),探討帶包覆層結(jié)構(gòu)的管道腐蝕缺陷檢測的可行性,并通過改變探頭的布置方式進(jìn)行腐蝕缺陷檢測能力的對比,得出最佳的檢測方式,繼而進(jìn)行改變保溫層的厚度實(shí)驗(yàn),分析保溫層厚度的變化對弱磁檢測信號(hào)的影響,證明了保溫層在一定厚度的情況下,弱磁無損檢測技術(shù)在帶包覆層管道腐蝕缺陷檢測的可靠性。然后結(jié)合弱磁信號(hào)的特點(diǎn),針對該種管道信號(hào)進(jìn)行了數(shù)據(jù)處理方式的研究,運(yùn)用概率法及小波分析法進(jìn)行缺陷的提取及判定,分析二者的優(yōu)缺點(diǎn),并對預(yù)制人工缺陷試板的檢測信號(hào)進(jìn)行特征量的分析,實(shí)現(xiàn)缺陷的定量研究。最后基于本文的研究內(nèi)容及離散數(shù)據(jù)的二維成像分析,運(yùn)用C#語言編寫帶包覆層鐵磁性管道腐蝕缺陷檢測系統(tǒng)的軟件平臺(tái),實(shí)現(xiàn)了數(shù)據(jù)的采集、分析,缺陷的提取、定量,二維成像功能,并通過工業(yè)現(xiàn)場實(shí)踐開展檢測研究,檢測結(jié)果均取得了良好的效果,進(jìn)一步驗(yàn)證了帶包覆層管道腐蝕缺陷的弱磁無損檢測技術(shù)的可靠性,為后續(xù)的弱磁檢測技術(shù)研究奠定了良好的基礎(chǔ)。
[Abstract]:Along with our country vigorously promotes the conservation, the environmental protection energy strategy, the energy full utilization receives the high attention. Therefore, pipes with cladding structure have been adopted in many industrial fields. This kind of pipeline structure can prevent the loss of heat energy, improve the medium conversion parameters, reduce the risk of corrosion by Rain Water and other harmful media, and improve the service life of the pipeline. However, with the increase of pipeline service life, pipeline corrosion is inevitable, which brings great hidden trouble to pipeline operation. Therefore, a nondestructive testing technology is urgently needed to eliminate major safety accidents. Theoretical analysis and experimental study on corrosion of ferromagnetic pipe with aluminum coating are carried out in this paper. First of all, a comparative test between ferromagnetic pipe body and ferromagnetic pipe with coating layer is carried out, and the feasibility of corrosion defect detection of pipe with coating structure is discussed. By changing the arrangement of the probe to compare the ability of corrosion defect detection, the best detection method is obtained, and then the thickness of the insulation layer is changed, and the influence of the thickness of the insulation layer on the weak magnetic detection signal is analyzed. It is proved that the weak magnetic field nondestructive testing technology is reliable for the corrosion defect detection of pipeline with coating layer under the condition of a certain thickness of insulating layer. Then according to the characteristics of weak magnetic signal, the data processing method of this kind of pipeline signal is studied, and the defects are extracted and judged by using probability method and wavelet analysis method, and the advantages and disadvantages of the two methods are analyzed. The characteristic quantity of the test signal of the prefabricated artificial defect test plate is analyzed to realize the quantitative study of the defect. Finally, based on the research content of this paper and the two-dimensional imaging analysis of discrete data, the software platform of corrosion detection system for ferromagnetic pipeline with coated layer is compiled by C # language, which realizes the data collection, analysis, defect extraction and quantitative analysis. Two-dimensional imaging function, and through the industrial field practice to carry out the detection research, the test results have achieved good results, and further verify the reliability of the weak magnetic nondestructive testing technology with the corrosion defects of the coated pipeline. It lays a good foundation for the further study of weak magnetic field detection technology.
【學(xué)位授予單位】：南昌航空大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TG174.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 胡博;于潤橋;徐偉津;;人工槽模擬GH4169渦輪盤表面裂紋缺陷的微磁檢測[J];航空學(xué)報(bào);2015年10期

2 于潤橋;徐偉津;胡博;廖城;付鑫;何恩達(dá);;帶包覆層管道腐蝕缺陷的微磁檢測技術(shù)[J];失效分析與預(yù)防;2013年06期

3 傅迎光;王健;孫明璇;劉再斌;范智勇;石坤;;有包覆層鐵磁試件的脈沖渦流檢測[J];測試技術(shù)學(xué)報(bào);2013年02期

4 辛偉;丁克勤;黃冬林;梁麗紅;;帶保溫層管道腐蝕缺陷的脈沖渦流檢測技術(shù)仿真[J];無損檢測;2009年07期

5 原培新;牛艷平;;帶保溫層管道腐蝕狀態(tài)的X射線檢測方法研究[J];CT理論與應(yīng)用研究;2007年03期

6 劉增華;何存富;王秀彥;吳斌;;帶粘彈性包覆層充液管道中的超聲導(dǎo)波缺陷檢測研究[J];機(jī)械科學(xué)與技術(shù);2007年06期

7 何存富;孫雅欣;劉增華;王秀彥;吳斌;;彎管缺陷超聲導(dǎo)波檢測的有限元分析[J];北京工業(yè)大學(xué)學(xué)報(bào);2006年04期

8 楊賓峰;羅飛路;張玉華;徐平;;脈沖渦流在飛機(jī)鉚接結(jié)構(gòu)無損檢測中的應(yīng)用研究[J];計(jì)量技術(shù);2005年12期

9 吳斌;劉增華;王秀彥;何存富;;利用縱向?qū)Рz測充水管道周向缺陷的實(shí)驗(yàn)研究[J];中國機(jī)械工程;2005年22期

10 李隆濤,何存富,吳斌;周向超聲導(dǎo)波對管道縱向缺陷檢測的研究[J];聲學(xué)學(xué)報(bào);2005年04期

相關(guān)博士學(xué)位論文 前3條

1 馬書義;管道超聲導(dǎo)波損傷檢測與特征識(shí)別[D];大連理工大學(xué);2015年

2 徐志遠(yuǎn);帶包覆層管道壁厚減薄脈沖渦流檢測理論與方法[D];華中科技大學(xué);2012年

3 楊賓峰;脈沖渦流無損檢測若干關(guān)鍵技術(shù)研究[D];國防科學(xué)技術(shù)大學(xué);2006年

相關(guān)碩士學(xué)位論文 前5條

1 康小偉;包覆層管道腐蝕脈沖渦流檢測機(jī)理與方法研究[D];南昌航空大學(xué);2012年

2 楊晨;壓力管道的微波無損檢測技術(shù)研究[D];太原理工大學(xué);2012年

3 黃琛;基于脈沖渦流技術(shù)的無損檢測實(shí)驗(yàn)研究[D];華中科技大學(xué);2007年

4 宋志東;超聲導(dǎo)波技術(shù)在管道缺陷檢測中的研究[D];天津大學(xué);2006年

5 程載斌;利用超聲導(dǎo)波進(jìn)行管道裂紋檢測的數(shù)值模擬和實(shí)驗(yàn)研究[D];太原理工大學(xué);2004年

，

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