【摘要】：環(huán)模制粒機(jī)制粒效率高、成型效果好,是顆粒飼料和生物質(zhì)固體成型燃料的主要加工設(shè)備,隨著顆粒飼料和生物質(zhì)固體成型燃料需求量的持續(xù)上升,其市場需求量越來越大�；趪鴥�(nèi)環(huán)模制粒裝備可靠性差的技術(shù)難題,本文開展環(huán)模制粒機(jī)可靠性設(shè)計(jì)與分析技術(shù)研究,為環(huán)模制粒機(jī)的改進(jìn)設(shè)計(jì)和可靠性增長提供參考。本文主要工作如下：(1)根據(jù)收集的故障數(shù)據(jù)對(duì)某型號(hào)環(huán)模制粒機(jī)試驗(yàn)機(jī)可靠性指標(biāo)進(jìn)行了評(píng)估,確定了該型號(hào)制粒機(jī)故障間隔時(shí)間分布類型,并以其為依據(jù)推導(dǎo)計(jì)算了制粒機(jī)可靠性指標(biāo),為環(huán)模制粒機(jī)動(dòng)態(tài)可靠性分析提供了依據(jù)。(2)確定了環(huán)模制粒機(jī)關(guān)鍵子系統(tǒng),對(duì)環(huán)模制粒機(jī)關(guān)鍵子系統(tǒng)進(jìn)行故障模式、影響及危害性分析(FMECA),根據(jù)分析結(jié)果,對(duì)環(huán)模制粒機(jī)可靠性的保障與提升提出了措施。(3)對(duì)現(xiàn)有的可靠性分配方法——模糊層次分析法進(jìn)行了改進(jìn),運(yùn)用改進(jìn)的模糊層次分析法對(duì)環(huán)模制粒機(jī)進(jìn)行可靠性分配,確定了環(huán)模制粒機(jī)各子系統(tǒng)可靠性指標(biāo)和制粒子系統(tǒng)各零部件可靠性指標(biāo)。(4)建立了制粒機(jī)核心部件環(huán)模的可靠性分析模型,分別對(duì)現(xiàn)有環(huán)模疲勞壽命可靠性與磨損可靠性進(jìn)行預(yù)測,進(jìn)而對(duì)環(huán)�？煽啃赃M(jìn)行了綜合分析。(5)對(duì)現(xiàn)有環(huán)模結(jié)構(gòu)設(shè)計(jì)方案進(jìn)行修改,提出兩種新型環(huán)模,對(duì)新型環(huán)模進(jìn)行可靠性分析并與現(xiàn)有環(huán)模對(duì)比,結(jié)果表明新設(shè)計(jì)的�？捉诲e(cuò)角為60。的環(huán)模不僅在法蘭與環(huán)模外壁相交處壽命分布得到了改善,且可靠性得到較大提升,為環(huán)模的結(jié)構(gòu)優(yōu)化和可靠性增長提供了參考。
[Abstract]:Ring mould granulator is the main processing equipment for pellet feed and biomass solid briquetting fuel. With the increasing demand of pellet feed and biomass solid briquetting fuel, the market demand is increasing. Based on the technical problem of poor reliability of ring die granulator in China, the reliability design and analysis technology of ring die granulator is studied in this paper, which provides a reference for the improvement design and reliability growth of ring die granulator. The main work of this paper is as follows: (1) according to the fault data collected, the reliability index of a certain type of ring model granulator is evaluated, and the distribution type of fault interval time of the model granulator is determined. Based on it, the reliability index of the granulator is deduced and calculated, which provides the basis for the dynamic reliability analysis of the ring mould granulator. (2) the key subsystem of the ring mould granulator is determined, and the failure mode of the key subsystem of the ring mold granulator is determined. According to the results of the analysis, (FMECA), puts forward some measures to ensure and enhance the reliability of the ring mould granulator. (3) the existing reliability distribution method, Fuzzy Analytic hierarchy process (FAHP), is improved. The improved fuzzy analytic hierarchy process (FAHP) is used to distribute the reliability of the ring mould granulator. The reliability indexes of each subsystem and parts of the granulator are determined. (4) the reliability analysis model of the core components of the granulator is established. The fatigue life reliability and wear reliability of the existing ring die are predicted, and the reliability of the ring die is analyzed. (5) the structural design scheme of the existing ring die is modified, and two new ring dies are proposed. The reliability analysis of the new ring die is carried out and compared with the existing ring die. The results show that the new designed die hole staggered angle is 60. The life distribution of the ring die is improved at the intersection of the flange and the outer wall of the ring die, and the reliability of the ring die is greatly improved, which provides a reference for the structure optimization and reliability growth of the ring die.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：S817.1;TK6

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