橫向磁通感應(yīng)加熱裝置的研究
本文關(guān)鍵詞: 橫向磁通 感應(yīng)加熱 MagNet 有限元 均勻性 出處:《河北工業(yè)大學(xué)》2014年碩士論文 論文類型:學(xué)位論文
【摘要】:橫向磁通感應(yīng)加熱相對于傳統(tǒng)的燃料加熱不僅具有加熱速度快、加熱精度高、產(chǎn)生污染少,便于實(shí)現(xiàn)自動化管理等優(yōu)點(diǎn),還具有無功功率小、加熱頻率低、適合連續(xù)加熱等優(yōu)點(diǎn)。但是在橫向磁通感應(yīng)加熱裝置中對帶材進(jìn)行加熱時(shí),帶材表面的溫度分布不均勻的問題,影響了此項(xiàng)技術(shù)的推廣和應(yīng)用。 本文首先從麥克斯韋(Maxwell)電磁場方程組出發(fā),推導(dǎo)了橫向磁通感應(yīng)加熱帶材內(nèi)電磁場、渦流場及溫度場分布的理論公式;建立了感應(yīng)加熱裝置的有限元數(shù)學(xué)模型。 本文應(yīng)用Infolytica公司的MagNet和ThermNet軟件。并對在MagNet軟件中建模、材料設(shè)定、網(wǎng)格剖分等步驟做了簡介,建立感應(yīng)加熱裝置二維和三維數(shù)值模型并對感應(yīng)加熱裝置的二維全模型和二分之一模型進(jìn)行了仿真計(jì)算,并對其結(jié)果進(jìn)行了數(shù)值比較。確定了在對橫向磁通感應(yīng)加熱裝置部分模型進(jìn)行磁-熱耦合仿真計(jì)算時(shí)應(yīng)采用的邊界條件。 建立了橫向磁通感應(yīng)加熱裝置的三維四分之一數(shù)值模型,進(jìn)行了相應(yīng)參數(shù)的設(shè)置,并對其進(jìn)行了磁-熱耦合仿真計(jì)算。采用控制單一變量法對不同線圈大小、不同線圈形狀、鐵芯與帶材不同氣隙大小、不同電流大小時(shí)的感應(yīng)加熱裝置進(jìn)行了磁-熱仿真計(jì)算,并對結(jié)果進(jìn)行比較,得到了較好的感應(yīng)加熱裝置結(jié)構(gòu),使帶材在感應(yīng)加熱裝置出口處溫度的分布有了較好的均勻度。 最后對本做的工作進(jìn)行了總結(jié),并對需要繼續(xù)進(jìn)行的研究做了簡要說明。
[Abstract]:Compared with traditional fuel heating, transverse flux induction heating not only has the advantages of fast heating speed, high heating precision, less pollution, easy to realize automation management, but also has the advantages of low reactive power and low heating frequency. It is suitable for continuous heating, but when the strip is heated in the transverse flux induction heating device, the uneven temperature distribution on the strip surface affects the popularization and application of this technology. In this paper, the theoretical formulas of electromagnetic field, eddy current field and temperature field in transverse flux induction heating strip are derived from Maxwell's equations of electromagnetic field. The finite element mathematical model of induction heating device is established. In this paper, the MagNet and ThermNet software of Infolytica Company are used, and the steps of modeling, material setting and mesh generation in MagNet software are introduced. The two dimensional and three dimensional numerical models of induction heating device are established, and the two dimensional full model and 1/2 model of induction heating device are simulated and calculated. The results are compared numerically and the boundary conditions used in the magnetic-thermal coupling simulation of some models of transverse flux induction heating device are determined. The 3D 1/4 numerical model of transverse flux induction heating device is established, the corresponding parameters are set up, and the magnetic-thermal coupling simulation calculation is carried out. The control single variable method is used to control the different coil sizes. The induction heating device with different coil shape, different air gap size and different current size is calculated by magnetic-thermal simulation, and the results are compared, and a better induction heating device structure is obtained. The distribution of the strip temperature at the outlet of the induction heating device is uniform. At last, the paper summarizes the work done, and gives a brief explanation of the further research.
【學(xué)位授予單位】:河北工業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TM924.01
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