本文選題：超聲波 + 管道壁厚��； 參考：《河北聯(lián)合大學(xué)》2014年碩士論文

【摘要】：隨著現(xiàn)代工業(yè)快速的發(fā)展，管道的應(yīng)用也越來(lái)越廣泛，幾乎遍布了生產(chǎn)的各個(gè)環(huán)節(jié)，因此對(duì)管道進(jìn)行必要的檢測(cè)和維護(hù)來(lái)保證管道的使用安全也變得越來(lái)越重要。由于目前國(guó)內(nèi)外針對(duì)內(nèi)部結(jié)垢問(wèn)題大都采用的是人工定期拆管檢查，這樣的檢測(cè)方式不僅效率低，而且直接影響生產(chǎn)生活，同時(shí)還增加了企業(yè)的成本。 超聲波測(cè)厚技術(shù)是檢測(cè)行業(yè)厚度測(cè)量工程中的一個(gè)重要部分，，有效且快捷地完成厚度的測(cè)量是保證企業(yè)生產(chǎn)質(zhì)量、效率和安全的核心環(huán)節(jié)之一。國(guó)內(nèi)外采用渦流、激光、射線等方法來(lái)進(jìn)行厚度的測(cè)量，這些方法在實(shí)際使用時(shí)需要解決很多問(wèn)題，應(yīng)用范圍小，而且對(duì)管道內(nèi)部生成垢層等形成多層介質(zhì)厚度的測(cè)量都難以實(shí)現(xiàn)，因此研究一種簡(jiǎn)易、高效、在線測(cè)量厚度的測(cè)量技術(shù)對(duì)工業(yè)工程中需要在線測(cè)厚的管道或其它設(shè)備具有十分重要的意義。 針對(duì)管道存在的內(nèi)部檢測(cè)問(wèn)題，考慮到只需要準(zhǔn)確地測(cè)量出超聲波在不同介質(zhì)層傳播的時(shí)間以及各層介質(zhì)層之間傳播的時(shí)間差即可通過(guò)計(jì)算得到各介質(zhì)層的厚度值,通過(guò)在管道外部安裝檢測(cè)設(shè)備來(lái)實(shí)現(xiàn)對(duì)管道內(nèi)部情況的檢測(cè)，滿足企業(yè)生產(chǎn)生活要求的指標(biāo)。 首先敘述了課題的相關(guān)背景以及測(cè)厚技術(shù)的國(guó)內(nèi)外發(fā)展現(xiàn)狀，分析研究了目前常用的幾種檢測(cè)方法的優(yōu)缺點(diǎn)。 其次敘述了超聲波的檢測(cè)原理以及測(cè)厚的基礎(chǔ)理論，通過(guò)對(duì)超聲波物理性質(zhì)和傳播特性的研究，提出了利用超聲波對(duì)管道內(nèi)部介質(zhì)層厚度進(jìn)行測(cè)量的方法，并設(shè)計(jì)了進(jìn)行測(cè)量的實(shí)驗(yàn)方案。 最后敘述了實(shí)際試驗(yàn)驗(yàn)證實(shí)驗(yàn)方案的過(guò)程，利用現(xiàn)有設(shè)備和試件進(jìn)行了實(shí)際的模擬實(shí)驗(yàn)，并通過(guò)對(duì)模擬實(shí)驗(yàn)獲得的數(shù)據(jù)整理和計(jì)算，驗(yàn)證了實(shí)驗(yàn)方案的可行性和可信性。
[Abstract]:With the rapid development of modern industry, the application of pipelines is becoming more and more extensive, almost all parts of production, so the necessary inspection and maintenance of pipelines to ensure the safety of pipelines has become more and more important. At present, most of the problems of internal fouling at home and abroad are controlled by manual periodic inspection, which is not only inefficient, but also directly affects the production and life, and increases the cost of the enterprise at the same time. The ultrasonic thickness measurement technology is an important part of the thickness measurement engineering in the testing industry. The effective and fast thickness measurement is one of the core links to ensure the production quality, efficiency and safety of the enterprise. Eddy current, laser, ray and other methods are used to measure thickness at home and abroad. Many problems need to be solved when these methods are used in practice, and the scope of application is small. Moreover, it is difficult to measure the thickness of multi-layer medium, such as the formation of scale layer inside the pipeline, so it is easy and efficient to study a new kind of medium. The technique of measuring thickness on line is very important to the pipeline or other equipments which need to measure thickness on line in industrial engineering. In view of the internal inspection problem of pipeline, considering that the time of ultrasonic wave propagating in different media layers and the time difference between them can be calculated by calculating the thickness of each medium layer. Through the installation of inspection equipment outside the pipeline to achieve the detection of the internal situation of the pipeline to meet the requirements of production and life indicators. Firstly, the background of the subject and the development status of thickness measurement technology at home and abroad are described, and the advantages and disadvantages of several commonly used detection methods are analyzed and studied. Secondly, the principle of ultrasonic testing and the basic theory of thickness measurement are described. By studying the physical properties and propagation characteristics of ultrasonic wave, the method of measuring the thickness of dielectric layer inside the pipe by ultrasonic wave is put forward. The experimental scheme of measurement is designed. In the end, the process of verification of the experimental scheme is described, and the feasibility and credibility of the experimental scheme are verified by collating and calculating the data obtained from the simulation experiment by using the existing equipment and the specimen.
【學(xué)位授予單位】：河北聯(lián)合大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TB553

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本文編號(hào)：1902640