本文選題：微波熱再生 + 瀝青混合料　； 參考：《安徽工程大學(xué)》2017年碩士論文

【摘要】：微波加熱效率高、成本低,是一種非常有應(yīng)用前景的技術(shù),因此它越來越廣泛的被用于日常生活中和工業(yè)生產(chǎn)中。在修復(fù)被損壞瀝青路面工作中,瀝青路面微波熱再生技術(shù)逐漸被發(fā)展起來。為適應(yīng)路面的各種損壞形式,提高熱再生的柔性,本文設(shè)計(jì)出一種柔性的微波熱再生設(shè)備。該設(shè)備通過橫縱向調(diào)節(jié)微波加熱腔,同時(shí)調(diào)節(jié)微波加熱平臺(tái)的高度,用以修復(fù)不同的被損壞的瀝青路面。當(dāng)路面損壞面積過大時(shí),該設(shè)備通過多個(gè)加熱腔共同完成路面修復(fù)工作,因此本文仿真分析了加熱腔之間的電磁波耦合對(duì)加熱效果的影響。具體工作如下:(1)根據(jù)要求設(shè)計(jì)瀝青混合料微波加熱再生裝置。瀝青路面被破壞的形式多種多樣,這些破壞形式往往會(huì)有不同的破壞結(jié)果。為適應(yīng)不同的路面損壞形式,本文設(shè)計(jì)出柔性的微波熱再生設(shè)備用以修復(fù)受損路面。該設(shè)備通過橫縱向調(diào)節(jié)微波加熱腔同時(shí)調(diào)節(jié)微波加熱平臺(tái)的高度,用以適應(yīng)不同加熱面積及不規(guī)則的被損壞的瀝青路面。(2)優(yōu)化瀝青混合料微波加熱再生裝置。微波加熱的波源來自于加熱腔上的磁控管,而磁控管在工作過程中將會(huì)產(chǎn)生大量的熱,過高的溫度會(huì)將其損壞,所以設(shè)備需要良好的散熱機(jī)構(gòu)。針對(duì)瀝青混合料微波加熱再生裝置的散熱性能問題,本文通過對(duì)機(jī)構(gòu)進(jìn)行優(yōu)化,獲得散熱性能較好的再生裝置方案。(3)使用COMSOL Multiphysics進(jìn)行加熱仿真。通過分析計(jì)算,研究單工作腔喇叭天線電磁傳輸問題。使用COMSOL Multiphysics對(duì)單個(gè)加熱腔進(jìn)行仿真,模擬出電磁波傳輸狀態(tài)。當(dāng)微波熱再生設(shè)備有多個(gè)加熱腔共同協(xié)作工作時(shí),其加熱腔之間有著電磁場(chǎng)耦合現(xiàn)象,從而影響加熱效果,因此本文使用COMSOL Multiphysics對(duì)兩個(gè)或多個(gè)加熱腔的加熱過程進(jìn)行仿真,得到耦合場(chǎng)加熱的溫度分布,獲得瀝青混合料表面以及內(nèi)部的電磁場(chǎng)分布。通過以上的研究,得出以下結(jié)論與成果:(1)通過設(shè)計(jì)、優(yōu)化得到符合設(shè)計(jì)功能要求的微波加熱再生實(shí)驗(yàn)裝置。(2)做出設(shè)備的工程圖,加工出設(shè)備的零件,完成設(shè)備實(shí)體的裝配,接好線路,調(diào)試設(shè)備,實(shí)現(xiàn)加熱目的。(3)使用COMSOL Multiphysics進(jìn)行加熱仿真,仿真模擬出單個(gè)角錐喇叭加熱腔加熱的效果和瀝青混合料試樣溫度分布情況。通過對(duì)多個(gè)角錐喇叭加熱腔耦合的仿真,獲得耦合加熱時(shí)電磁波的傳播和分布規(guī)律,以及加熱完成后瀝青混合料試樣的溫度分布規(guī)律。
[Abstract]:Microwave heating is a promising technology with high efficiency and low cost, so it is widely used in daily life and industrial production. In the process of repairing damaged asphalt pavement, microwave thermal regeneration technology of asphalt pavement has been developed gradually. In order to adapt to various damage forms of pavement and improve the flexibility of thermal regeneration, a flexible microwave thermal regeneration equipment is designed in this paper. The equipment adjusts the microwave heating cavity horizontally and longitudinally and adjusts the height of the microwave heating platform to repair different damaged asphalt pavement. When the pavement damage area is too large, the equipment completes the pavement repair work through multiple heating cavities, so the influence of electromagnetic wave coupling between the heating cavities on the heating effect is simulated and analyzed in this paper. The specific work is as follows: (1) the microwave heating regeneration device of asphalt mixture is designed according to the requirement. There are many kinds of damage forms of asphalt pavement, which often have different damage results. In order to adapt to different kinds of pavement damage, a flexible microwave thermal regeneration equipment is designed to repair the damaged pavement. The equipment adjusts the height of the microwave heating platform by adjusting the microwave heating chamber horizontally and longitudinally in order to adapt to different heating areas and irregular damaged asphalt pavement. (2) optimize the microwave heating regeneration device of asphalt mixture. The wave source of microwave heating comes from the magnetron in the heating cavity, and the magnetron will produce a lot of heat in the working process, which will be damaged by the excessive temperature, so the equipment needs a good heat dissipation mechanism. Aiming at the heat dissipation performance of asphalt mixture microwave heating regenerator, this paper optimizes the mechanism to obtain the regeneration device with better heat dissipation performance. (3) the heating simulation is carried out by COMSOL Multiphysics. Through analysis and calculation, the electromagnetic transmission problem of single working cavity horn antenna is studied. A single heating cavity is simulated by COMSOL Multiphysics to simulate the electromagnetic wave transmission state. When the microwave thermal regeneration equipment has several heating cavities working together, there is electromagnetic field coupling between the heating cavities, which affects the heating effect. Therefore, the heating process of two or more heating cavities is simulated by COMSOL Multiphysics. The temperature distribution of coupled field heating and the electromagnetic field distribution of asphalt mixture surface and interior are obtained. Through the above research, the following conclusions and achievements are obtained: (1) through the design, the microwave heating regenerating experimental device which meets the design function requirements is optimized. (2) the engineering drawings of the equipment are made, the parts of the equipment are processed, and the assembly of the equipment entity is completed. The circuit is connected and the equipment is debugged to achieve the purpose of heating. (3) using COMSOL Multiphysics to simulate the heating effect of a single corner horn heating chamber and the temperature distribution of asphalt mixture sample. The propagation and distribution of electromagnetic wave during coupled heating and the temperature distribution of asphalt mixture after heating are obtained by simulating the coupling of several angular cone horn heating cavities.
【學(xué)位授予單位】：安徽工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：U414

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