發(fā)布時間：2018-08-02 18:10

【摘要】：隨著電動振動臺推力的增大,特別是新型感應(yīng)式電動振動臺技術(shù)的成熟,振動臺的冷卻散熱問題逐漸凸顯。本文采用尋找熱源→計算熱功率→計算溫度→實驗測量的思路,以35噸直接耦合式電動振動臺和16噸感應(yīng)式電動振動臺為例,研究了目前大推力振動臺的主要熱問題,主要內(nèi)容包括:(1)以35噸直接耦合式電動振動臺為例,研究直接耦合式電動振動臺的主要熱問題:動圈骨架底部容易出現(xiàn)局部高溫。研究借助傳統(tǒng)的計算公式和有限元方法進(jìn)行,計算動圈骨架底端產(chǎn)生的感生電流和動生電流。為得到與計算相關(guān)的電磁參數(shù),本文建立了臺體的磁路模型和電路模型,得到振動臺的磁路分布和阻抗特性,進(jìn)而計算得到動圈骨架中的電渦流,整理出骨架熱功率的計算式。針對動圈骨架底端因電渦流產(chǎn)生的熱問題,采用有限元法比較了現(xiàn)有三種不同結(jié)構(gòu)形式的動圈骨架對感應(yīng)電流的抑制效果,并比較了三種結(jié)構(gòu)的動力學(xué)特性。(2)以16噸感應(yīng)式電動振動臺為例,研究了感應(yīng)式電動振動臺主要的冷卻散熱問題:長時間大量級工作時感應(yīng)環(huán)的溫度往往偏高。這是由于感應(yīng)臺的感應(yīng)環(huán)只能采用風(fēng)冷的冷卻方式,而風(fēng)冷的冷卻效率較低。本文根據(jù)該感應(yīng)臺的設(shè)計參數(shù),著重對感應(yīng)環(huán)進(jìn)行研究:建立了感應(yīng)環(huán)的電路模型,計算得到了感應(yīng)環(huán)內(nèi)部的感應(yīng)電流;通過有限元法得到感應(yīng)環(huán)的感應(yīng)電流和工作溫度的分布狀況。首次設(shè)計并選擇了最佳的方案,對感應(yīng)環(huán)進(jìn)行溫度測量,實測數(shù)據(jù)與仿真結(jié)果吻合度較好。本文還采用仿真的方法,研究了冷卻氣體的風(fēng)速、風(fēng)壓、氣隙寬度對感應(yīng)環(huán)溫度的影響,增大風(fēng)壓和氣隙寬度可以提高冷卻效率,但也會帶來能源浪費、噪聲增大、磁場減小的負(fù)面影響。(3)以16噸感應(yīng)式電動振動臺為例,研究了驅(qū)動線圈的冷卻能力,采用有限元法建立了精確的驅(qū)動線圈模型,并劃分了精細(xì)的網(wǎng)格。研究得到水壓與線圈最大溫升呈反比例關(guān)系;冷卻水水壓、溫度的分布沿著導(dǎo)線均勻變化,驅(qū)動線圈在當(dāng)前工作狀態(tài)下有足夠的冷卻能力。課題設(shè)計了線圈的溫度測量方案,實測溫度數(shù)據(jù)與仿真結(jié)果偏差較小。
[Abstract]:With the increase of the thrust of the electric vibration table, especially the mature of the new induction electric vibrator, the cooling and cooling problem of the vibration table is becoming more and more obvious. This paper adopts the thinking of finding the heat source, calculating the heat power, calculating the temperature and measuring the experiment, and taking the 35 ton direct coupling electric vibration table and the 16 ton induction electric vibration table as an example. The main heat problems of the current large thrust shaking table are studied. The main contents are as follows: (1) taking the 35 ton direct coupled electric vibration table as an example, the main heat problem of the direct coupled electric vibration table is studied: the local high temperature is easy to appear at the bottom of the moving frame, and the study is carried out with the traditional calculation formula and the finite element method to calculate the bottom end of the moving frame. To obtain the induced current and movable current. In order to obtain the related electromagnetic parameters, the magnetic circuit model and circuit model of the platform are established. The magnetic circuit distribution and impedance characteristics of the vibrating table are obtained. Then the eddy current in the moving frame is calculated and the calculation formula of the thermal power of the skeleton is sorted. The finite element method is used to compare the effect of the current three different structural frames on the induced current, and the dynamic characteristics of the three structures are compared. (2) taking 16 ton induction electric vibration table as an example, the main cooling and cooling problems of the induction electric vibration table are studied. The temperature is often high. This is because the induction ring of the induction table can only adopt the cooling mode of air cooling, and the cooling efficiency of the air cooling is low. Based on the design parameters of the induction table, this paper focuses on the study of the induction ring: the circuit model of the induction ring is set up, the induction current inside the induction ring is calculated, and the sense of the induction loop is obtained by the finite element method. The distribution of the induced current and working temperature of the ring is designed and selected for the first time to measure the temperature of the induction ring. The measured data are in good agreement with the simulation results. This paper also uses the simulation method to study the influence of the wind speed, wind pressure and air gap width on the temperature of the induction ring, and increase the air pressure and the air gap width. Degree can improve the cooling efficiency, but it will also bring about energy waste, noise increase, and the negative effect of magnetic field. (3) taking 16 ton induction electric vibration table as an example, the cooling capacity of the driving coil is studied. The precise driving coil model is established by the finite element method, and the fine grid is divided. The maximum temperature rise of water pressure and coil is studied. The distribution of the cooling water pressure, the temperature distribution along the wire is uniform, and the driving coil has enough cooling capacity in the current working state. The project has designed the temperature measurement scheme of the coil, and the measured temperature data have little deviation from the simulation results.
【學(xué)位授予單位】：中國航天科技集團(tuán)公司第一研究院
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TB534.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 汪榮;晏效鋒;;振動臺漏磁屏蔽應(yīng)用研究[J];環(huán)境技術(shù);2015年03期

2 王曉遠(yuǎn);杜靜娟;;應(yīng)用CFD流固耦合熱分析車用高功率密度電機的水冷系統(tǒng)[J];電工技術(shù)學(xué)報;2015年09期

3 李玉玲;楊志文;;電動振動臺試驗?zāi)芰Φ拇_認(rèn)方法研究[J];計算機與數(shù)字工程;2015年01期

4 鐘燕;劉文里;白永剛;馬健;;自耦變壓器繞組漏磁場及渦流損耗的二維數(shù)值分析[J];黑龍江電力;2013年06期

5 李云輝;姚壽文;陳彥偉;;機械電渦流制動器關(guān)鍵件溫度場數(shù)值分析[J];汽車工程學(xué)報;2013年06期

6 江嘉銘;劉德權(quán);李廣生;頡延風(fēng);鄒暉;蔡立君;;HL-2M歐姆測試線圈的水冷計算優(yōu)化[J];核聚變與等離子體物理;2012年02期

7 秦亞明;張巧壽;;永磁振動臺磁路計算與仿真[J];強度與環(huán)境;2009年06期

8 江運泰;王麗娟;;電動振動臺動圈的交流阻抗計算[J];電子產(chǎn)品可靠性與環(huán)境試驗;2007年03期

9 夏樹杰,薛進(jìn)學(xué);感應(yīng)式電動振動臺特性計算[J];現(xiàn)代電子技術(shù);2005年09期

10 雷桂林,曲紅斌;趨膚效應(yīng)的理論解釋[J];甘肅科學(xué)學(xué)報;2005年01期

相關(guān)會議論文 前1條

1 包哈森;師力;;耐高溫環(huán)氧膠耐熱老化性能以及固化動力學(xué)研究[A];北京粘接學(xué)會第二十三屆學(xué)術(shù)年會暨粘接劑、密封劑技術(shù)發(fā)展研討會論文集[C];2014年

相關(guān)碩士學(xué)位論文 前5條

1 鐘燕;自耦變壓器渦流損耗和溫度場分析[D];哈爾濱理工大學(xué);2014年

2 王一東;一種新型高壓開關(guān)功率放大器的研制[D];哈爾濱工業(yè)大學(xué);2011年

3 井永騰;電力變壓器渦流場及熱問題計算與分析[D];沈陽工業(yè)大學(xué);2009年

4 孫明;科研教育用振動臺系統(tǒng)若干關(guān)鍵技術(shù)研究[D];浙江大學(xué);2008年

5 康雅華;電力變壓器渦流損耗和溫升的計算與分析[D];沈陽工業(yè)大學(xué);2007年

，

本文編號：2160268