本文選題：多相流 + 風機葉片�。� 參考：《新疆大學》2015年碩士論文

【摘要】：新疆的風能資源非常豐富,但是環(huán)境較惡劣,沙塵天氣較多,風沙運動會對各種物體造成強烈的風蝕作用。風電機組會受到風蝕作用,尤其是復合材料風機葉片,長期的風蝕必將造成材料失效報廢。在風機運行過程中,葉片不但要承受復雜的載荷,而且要抵擋風沙的沖刷。針對新疆的特殊情況,本課題主要研究風機葉片復合材料的風沙沖蝕磨損行為及其力學性能,為葉片復合材料保護提供一定的參考。本論文首先介紹了國內外風電產業(yè)的發(fā)展概況,以及多相流沖刷磨損的定義及其影響因素。接著介紹了玻璃纖維增強樹脂基復合材料的制備過程。其次,根據(jù)力學性能實驗標準,采用巴氏硬度計測試了玻璃纖維增強樹脂基復合材料表面的巴氏硬度,采用電子萬能試驗機分別對試樣進行了壓縮及彎曲力學性能測試,獲得了巴氏硬度值、壓縮強度及模量、彎曲強度及模量。然后,根據(jù)三因素三水平的正交試驗方法,選取氣流速度、沙粒粒徑和沖擊角度作為主要考核指標,用多相流沖蝕試驗機分別對兩組復合材料試樣進行氣固兩相流、氣固液三相流的沖刷磨損試驗。沖刷試驗過程中,需稱量試樣磨損前后的質量,計算磨損失重量。最后,使用PGI非球面測量儀對沖刷試樣的沖蝕坑進行線掃描,獲得了沖蝕坑掃描曲線,定性分析了各試樣的沖蝕程度;使用場發(fā)射掃描電鏡觀察復合材料表面沖刷磨損形貌,分析了材料的沖刷磨損機理。
[Abstract]:The wind energy resources in Xinjiang are very rich, but the environment is bad and the dust weather is more. The wind-sand sports meet causes strong wind erosion to various objects. Wind turbine will be affected by wind erosion, especially composite fan blades, the long-term wind erosion will lead to material failure and scrap. During the operation of the fan, the blade should not only bear complicated load, but also resist the erosion of wind sand. In view of the special situation of Xinjiang, this subject mainly studies the wind sand erosion wear behavior and mechanical properties of fan blade composite material, and provides a certain reference for the protection of blade composite material. In this paper, the development of wind power industry at home and abroad, the definition of multiphase flow scour wear and its influencing factors are introduced. Then the preparation process of glass fiber reinforced resin matrix composites was introduced. Secondly, according to the experimental standard of mechanical properties, the pasteurized hardness of glass fiber reinforced resin matrix composites was tested by using pasteurian hardness meter, and the compression and bending mechanical properties of the samples were tested by electronic universal testing machine. The values of Pasteur hardness, compression strength and modulus, bending strength and modulus were obtained. Then, according to the orthogonal test method of three factors and three levels, the airflow velocity, sand particle size and impact angle were selected as the main assessment indexes, and the gas-solid two-phase flow was carried out on the two groups of composite materials by multi-phase flow erosion testing machine. Erosion wear test of gas-solid-liquid three-phase flow. In the process of scouring test, the weight of wear loss should be calculated by weighing the quality of the sample before and after wear. Finally, the scour pits of the scour samples were scanned by PGI aspheric measuring instrument, and the scanning curves of the scour pits were obtained, the erosion degree of the samples was analyzed qualitatively, and the erosion and wear morphology of the composite surface was observed by field emission scanning electron microscope. The erosion wear mechanism of the materials was analyzed.
【學位授予單位】：新疆大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TB33

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本文編號：1861129