電除塵器巨型灰?guī)焓芰μ匦缘难芯?/H1>
發(fā)布時(shí)間：2019-01-22 10:15
【摘要】：我國(guó)現(xiàn)有的火電廠除灰系統(tǒng),大多數(shù)都采用上世紀(jì)80年代從國(guó)外引進(jìn)的“正壓濃相氣力除灰系統(tǒng)”,即先將粉塵暫時(shí)儲(chǔ)存在除塵器下部的小灰斗里,再由設(shè)在除塵器下的濃相氣力輸送裝置輸送到廠內(nèi)灰?guī)熘羞M(jìn)行儲(chǔ)存,然后用汽車將積灰外運(yùn),耗能占地較大,近年來,為節(jié)能省地出現(xiàn)一種器——庫(kù)合一的新型除塵器,這種除塵器中灰?guī)祗w積巨大,盛灰量大,受力復(fù)雜,是影響除塵器運(yùn)行安全的重要因素。本文首先以某器——庫(kù)合一型除塵器為背景,根據(jù)電除塵器巨型灰?guī)斓氖芰μ攸c(diǎn),構(gòu)建了受力較為合理的巨型灰?guī)斓慕Y(jié)構(gòu)體系,將巨型灰?guī)旌?jiǎn)化成空間桿系模型,使用大型有限元分析軟件Midas/GEN,分別按正壓、負(fù)壓參與組合的兩種工況,對(duì)巨型灰?guī)爝M(jìn)行靜力計(jì)算,分析了底梁、柱、水平圈梁及管撐等主要受力構(gòu)件的受力特點(diǎn);然后在空間桿系模型的基礎(chǔ)上考慮板和肋條的作用,建立梁板協(xié)同工作模型,并與空間桿系模型的計(jì)算結(jié)果進(jìn)行了對(duì)比分析,對(duì)梁板協(xié)同工作進(jìn)行研究;最后考慮溫度、支座失效的因素,研究了這兩種因素對(duì)巨型灰?guī)旖Y(jié)構(gòu)的變形和構(gòu)件內(nèi)力的影響。根據(jù)以上研究,得出結(jié)論如下:(1)負(fù)壓對(duì)結(jié)構(gòu)受力較正壓更為有利,底座大梁結(jié)構(gòu)的布置形式合理。(2)框架與圍護(hù)結(jié)構(gòu)的協(xié)同工作有利于結(jié)構(gòu)受力,板對(duì)結(jié)構(gòu)的影響不可忽略,并建議進(jìn)行類似結(jié)構(gòu)設(shè)計(jì)時(shí)采用協(xié)同工作模型進(jìn)行分析計(jì)算。(3)應(yīng)該在圍護(hù)壁板應(yīng)力較大的部位,進(jìn)行補(bǔ)強(qiáng)和加固,以免弱化梁板協(xié)同工作的效果。(4)在除塵器運(yùn)行時(shí),各支座均能正常工作的情況下,溫度荷載不會(huì)對(duì)結(jié)構(gòu)產(chǎn)生明顯的影響。(5)任何一個(gè)支座失效,都會(huì)對(duì)巨型灰?guī)旒俺龎m器主鋼結(jié)構(gòu)的安全構(gòu)成威脅。
[Abstract]:In most of the existing ash removal systems of thermal power plants in China, the "barotropic dense phase ash removal system" introduced from abroad in the 1980s means that dust is stored temporarily in the small ash hopper in the lower part of the dust collector. Then transported by the dense phase pneumatic conveying device under the dust collector to the ash storehouse in the plant for storage, and then transported the ash deposit out of the factory by car, which consumed a large area of energy. In recent years, in order to save energy and save land, a new type of dust precipitator with a combination of storage and storage has emerged in order to save energy and save land. In this kind of dust collector, the volume of ash storage is huge, the ash content is large, and the force is complex, which is an important factor affecting the safety of the dust collector operation. In this paper, the structure system of the mega ash storehouse with reasonable force is constructed according to the mechanical characteristics of the mega ash storehouse of the electric precipitator based on the background of an integrative precipitator, and the mega ash storehouse is simplified into a spatial bar system model. By using the finite element analysis software Midas/GEN, according to the two working conditions of positive pressure and negative pressure respectively, the static calculation of the huge ash storehouse is carried out, and the stress characteristics of the main load-bearing members such as bottom beam, column, horizontal ring beam and pipe brace are analyzed. On the basis of the spatial bar system model, considering the action of plate and rib, the beam-plate cooperative work model is established, and the calculation results of the spatial bar system model are compared and analyzed, and the beam-plate cooperative work is studied. Finally, considering the factors of temperature and bearing failure, the influence of these two factors on the deformation and internal force of the structure is studied. According to the above study, the conclusions are as follows: (1) the negative pressure is more favorable to the structure than the positive pressure, and the layout of the base beam structure is reasonable. (2) the cooperative work between the frame and the enclosure structure is beneficial to the structure stress. The influence of the plate on the structure should not be ignored, and it is suggested that the cooperative work model should be used in the design of similar structures. (3) reinforcement and reinforcement should be carried out in the areas where the stress of the retaining panels is high. In order to avoid weakening the effect of beam and plate cooperative work. (4) when the dust collector is in operation, the temperature load will not have a significant effect on the structure when all the supports can work normally. (5) any of the supports fail, It will pose a threat to the safety of the huge ash storage and the main steel structure of dust collector.
【學(xué)位授予單位】：蘭州交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM621.73
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 宋玉軍;呂峙勇;鄭俊興;;電除塵器的改造設(shè)計(jì)[J];純堿工業(yè);2017年01期
2 趙桃柱;;低低溫電除塵器改造及應(yīng)用[J];山東工業(yè)技術(shù);2017年03期
3 張千;劉毅;許文良;楊新;陳鴻偉;;省煤器灰斗結(jié)構(gòu)對(duì)飛灰顆粒捕集性能影響研究[J];電力科學(xué)與工程;2016年10期
4 尹建閣;趙海寶;;電除塵器灰斗蒸汽加熱改造設(shè)計(jì)與研究[J];機(jī)械設(shè)計(jì)與制造工程;2016年10期
5 方濱;;幾種電除塵器灰斗梁的結(jié)構(gòu)對(duì)比[J];江西建材;2016年18期
6 陳耀亮;;灰斗結(jié)構(gòu)采用大撓度理論計(jì)算方法研究[J];機(jī)電技術(shù);2016年03期
7 彭華寧;;一體式濕式電除塵器流場(chǎng)的數(shù)值模擬與優(yōu)化設(shè)計(jì)[J];電力科技與環(huán)保;2016年01期
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9 韋陳航;馬科偉;馮杰;張敏;;濕式電除塵器(WESP)的灰斗形式研究[J];機(jī)械工程師;2016年01期
10 李科;;我國(guó)大氣污染防治政策發(fā)展歷程[J];現(xiàn)代經(jīng)濟(jì)信息;2015年15期
相關(guān)會(huì)議論文 前4條
1 孫欣林;高進(jìn);周萬畝;;論電除塵器灰斗及排灰系統(tǒng)的升級(jí)優(yōu)化[A];第十五屆中國(guó)電除塵學(xué)術(shù)會(huì)議論文集[C];2013年
2 羅世新;梁可新;;除塵器斗、梁合一結(jié)構(gòu)的研究及工程應(yīng)用[A];第十五屆中國(guó)電除塵學(xué)術(shù)會(huì)議論文集[C];2013年
3 王作杰;譚志洪;;袋式除塵器傳統(tǒng)結(jié)構(gòu)設(shè)計(jì)改進(jìn)[A];中國(guó)硅酸鹽學(xué)會(huì)環(huán)保學(xué)術(shù)年會(huì)論文集[C];2012年
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相關(guān)碩士學(xué)位論文 前1條
1 王亮;電除塵器本體結(jié)構(gòu)的參數(shù)化設(shè)計(jì)及應(yīng)用研究[D];天津理工大學(xué);2008年
，
本文編號(hào)：2413129
本文鏈接：http://sikaile.net/kejilunwen/dianlidianqilunwen/2413129.html
[Abstract]:In most of the existing ash removal systems of thermal power plants in China, the "barotropic dense phase ash removal system" introduced from abroad in the 1980s means that dust is stored temporarily in the small ash hopper in the lower part of the dust collector. Then transported by the dense phase pneumatic conveying device under the dust collector to the ash storehouse in the plant for storage, and then transported the ash deposit out of the factory by car, which consumed a large area of energy. In recent years, in order to save energy and save land, a new type of dust precipitator with a combination of storage and storage has emerged in order to save energy and save land. In this kind of dust collector, the volume of ash storage is huge, the ash content is large, and the force is complex, which is an important factor affecting the safety of the dust collector operation. In this paper, the structure system of the mega ash storehouse with reasonable force is constructed according to the mechanical characteristics of the mega ash storehouse of the electric precipitator based on the background of an integrative precipitator, and the mega ash storehouse is simplified into a spatial bar system model. By using the finite element analysis software Midas/GEN, according to the two working conditions of positive pressure and negative pressure respectively, the static calculation of the huge ash storehouse is carried out, and the stress characteristics of the main load-bearing members such as bottom beam, column, horizontal ring beam and pipe brace are analyzed. On the basis of the spatial bar system model, considering the action of plate and rib, the beam-plate cooperative work model is established, and the calculation results of the spatial bar system model are compared and analyzed, and the beam-plate cooperative work is studied. Finally, considering the factors of temperature and bearing failure, the influence of these two factors on the deformation and internal force of the structure is studied. According to the above study, the conclusions are as follows: (1) the negative pressure is more favorable to the structure than the positive pressure, and the layout of the base beam structure is reasonable. (2) the cooperative work between the frame and the enclosure structure is beneficial to the structure stress. The influence of the plate on the structure should not be ignored, and it is suggested that the cooperative work model should be used in the design of similar structures. (3) reinforcement and reinforcement should be carried out in the areas where the stress of the retaining panels is high. In order to avoid weakening the effect of beam and plate cooperative work. (4) when the dust collector is in operation, the temperature load will not have a significant effect on the structure when all the supports can work normally. (5) any of the supports fail, It will pose a threat to the safety of the huge ash storage and the main steel structure of dust collector.
【學(xué)位授予單位】：蘭州交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM621.73
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 宋玉軍;呂峙勇;鄭俊興;;電除塵器的改造設(shè)計(jì)[J];純堿工業(yè);2017年01期
2 趙桃柱;;低低溫電除塵器改造及應(yīng)用[J];山東工業(yè)技術(shù);2017年03期
3 張千;劉毅;許文良;楊新;陳鴻偉;;省煤器灰斗結(jié)構(gòu)對(duì)飛灰顆粒捕集性能影響研究[J];電力科學(xué)與工程;2016年10期
4 尹建閣;趙海寶;;電除塵器灰斗蒸汽加熱改造設(shè)計(jì)與研究[J];機(jī)械設(shè)計(jì)與制造工程;2016年10期
5 方濱;;幾種電除塵器灰斗梁的結(jié)構(gòu)對(duì)比[J];江西建材;2016年18期
6 陳耀亮;;灰斗結(jié)構(gòu)采用大撓度理論計(jì)算方法研究[J];機(jī)電技術(shù);2016年03期
7 彭華寧;;一體式濕式電除塵器流場(chǎng)的數(shù)值模擬與優(yōu)化設(shè)計(jì)[J];電力科技與環(huán)保;2016年01期
8 沈青;;關(guān)于袋式除塵器設(shè)計(jì)的要點(diǎn)分析[J];科技與創(chuàng)新;2016年03期
9 韋陳航;馬科偉;馮杰;張敏;;濕式電除塵器(WESP)的灰斗形式研究[J];機(jī)械工程師;2016年01期
10 李科;;我國(guó)大氣污染防治政策發(fā)展歷程[J];現(xiàn)代經(jīng)濟(jì)信息;2015年15期
相關(guān)會(huì)議論文 前4條
1 孫欣林;高進(jìn);周萬畝;;論電除塵器灰斗及排灰系統(tǒng)的升級(jí)優(yōu)化[A];第十五屆中國(guó)電除塵學(xué)術(shù)會(huì)議論文集[C];2013年
2 羅世新;梁可新;;除塵器斗、梁合一結(jié)構(gòu)的研究及工程應(yīng)用[A];第十五屆中國(guó)電除塵學(xué)術(shù)會(huì)議論文集[C];2013年
3 王作杰;譚志洪;;袋式除塵器傳統(tǒng)結(jié)構(gòu)設(shè)計(jì)改進(jìn)[A];中國(guó)硅酸鹽學(xué)會(huì)環(huán)保學(xué)術(shù)年會(huì)論文集[C];2012年
4 袁勤澤;郭燕君;張永紅;;大型電除塵器灰斗及底梁的結(jié)構(gòu)設(shè)計(jì)和校核[A];第十二屆中國(guó)電除塵學(xué)術(shù)會(huì)議論文集[C];2007年
相關(guān)碩士學(xué)位論文 前1條
1 王亮;電除塵器本體結(jié)構(gòu)的參數(shù)化設(shè)計(jì)及應(yīng)用研究[D];天津理工大學(xué);2008年
，本文編號(hào)：2413129
本文鏈接：http://sikaile.net/kejilunwen/dianlidianqilunwen/2413129.html
