电动振动台热特性分析与仿真
发布时间：2018-08-02 18:10
【摘要】：随着电动振动台推力的增大,特别是新型感应式电动振动台技术的成熟,振动台的冷却散热问题逐渐凸显。本文采用寻找热源→计算热功率→计算温度→实验测量的思路,以35吨直接耦合式电动振动台和16吨感应式电动振动台为例,研究了目前大推力振动台的主要热问题,主要内容包括:(1)以35吨直接耦合式电动振动台为例,研究直接耦合式电动振动台的主要热问题:动圈骨架底部容易出现局部高温。研究借助传统的计算公式和有限元方法进行,计算动圈骨架底端产生的感生电流和动生电流。为得到与计算相关的电磁参数,本文建立了台体的磁路模型和电路模型,得到振动台的磁路分布和阻抗特性,进而计算得到动圈骨架中的电涡流,整理出骨架热功率的计算式。针对动圈骨架底端因电涡流产生的热问题,采用有限元法比较了现有三种不同结构形式的动圈骨架对感应电流的抑制效果,并比较了三种结构的动力学特性。(2)以16吨感应式电动振动台为例,研究了感应式电动振动台主要的冷却散热问题:长时间大量级工作时感应环的温度往往偏高。这是由于感应台的感应环只能采用风冷的冷却方式,而风冷的冷却效率较低。本文根据该感应台的设计参数,着重对感应环进行研究:建立了感应环的电路模型,计算得到了感应环内部的感应电流;通过有限元法得到感应环的感应电流和工作温度的分布状况。首次设计并选择了最佳的方案,对感应环进行温度测量,实测数据与仿真结果吻合度较好。本文还采用仿真的方法,研究了冷却气体的风速、风压、气隙宽度对感应环温度的影响,增大风压和气隙宽度可以提高冷却效率,但也会带来能源浪费、噪声增大、磁场减小的负面影响。(3)以16吨感应式电动振动台为例,研究了驱动线圈的冷却能力,采用有限元法建立了精确的驱动线圈模型,并划分了精细的网格。研究得到水压与线圈最大温升呈反比例关系;冷却水水压、温度的分布沿着导线均匀变化,驱动线圈在当前工作状态下有足够的冷却能力。课题设计了线圈的温度测量方案,实测温度数据与仿真结果偏差较小。
[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.
【学位授予单位】：中国航天科技集团公司第一研究院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TB534.2
本文编号：2160268
[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.
【学位授予单位】：中国航天科技集团公司第一研究院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TB534.2
【参考文献】
相关期刊论文 前10条
1 汪荣;晏效锋;;振动台漏磁屏蔽应用研究[J];环境技术;2015年03期
2 王晓远;杜静娟;;应用CFD流固耦合热分析车用高功率密度电机的水冷系统[J];电工技术学报;2015年09期
3 李玉玲;杨志文;;电动振动台试验能力的确认方法研究[J];计算机与数字工程;2015年01期
4 钟燕;刘文里;白永刚;马健;;自耦变压器绕组漏磁场及涡流损耗的二维数值分析[J];黑龙江电力;2013年06期
5 李云辉;姚寿文;陈彦伟;;机械电涡流制动器关键件温度场数值分析[J];汽车工程学报;2013年06期
6 江嘉铭;刘德权;李广生;颉延风;邹晖;蔡立君;;HL-2M欧姆测试线圈的水冷计算优化[J];核聚变与等离子体物理;2012年02期
7 秦亚明;张巧寿;;永磁振动台磁路计算与仿真[J];强度与环境;2009年06期
8 江运泰;王丽娟;;电动振动台动圈的交流阻抗计算[J];电子产品可靠性与环境试验;2007年03期
9 夏树杰,薛进学;感应式电动振动台特性计算[J];现代电子技术;2005年09期
10 雷桂林,曲红斌;趋肤效应的理论解释[J];甘肃科学学报;2005年01期
相关会议论文 前1条
1 包哈森;师力;;耐高温环氧胶耐热老化性能以及固化动力学研究[A];北京粘接学会第二十三届学术年会暨粘接剂、密封剂技术发展研讨会论文集[C];2014年
相关硕士学位论文 前5条
1 钟燕;自耦变压器涡流损耗和温度场分析[D];哈尔滨理工大学;2014年
2 王一东;一种新型高压开关功率放大器的研制[D];哈尔滨工业大学;2011年
3 井永腾;电力变压器涡流场及热问题计算与分析[D];沈阳工业大学;2009年
4 孙明;科研教育用振动台系统若干关键技术研究[D];浙江大学;2008年
5 康雅华;电力变压器涡流损耗和温升的计算与分析[D];沈阳工业大学;2007年
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