【摘要】：電作為人類社會發(fā)展的驅(qū)動力,人們的生活越來越離不開對電力的需求,在一些特殊場合或者電力無法輸送的地方就需要有微型電站的支持。微型可移動電站主要由起動發(fā)電機,燃機,以及發(fā)電等配套設(shè)備組成。本課題源于哈工大-航天科技集團聯(lián)合技術(shù)中心項目合作項目,具有很大的市場價值。本文主要研究高速電機軸承—轉(zhuǎn)子軸系設(shè)計、分析以及相配套的潤滑設(shè)計,并進行了試驗驗證。 依據(jù)永磁電機轉(zhuǎn)子設(shè)計要求,綜合考慮電機的工作特性,確定了轉(zhuǎn)子軸系結(jié)構(gòu)形式、軸承的布置方式和加載方式、潤滑結(jié)構(gòu)和聯(lián)軸器。采用高速軸承分析軟件對軸承內(nèi)部的重要參數(shù)和軸承預(yù)緊力進行優(yōu)選與設(shè)計,并根據(jù)試驗條件的限制和要求,設(shè)計了采用過盈配合方式的聯(lián)軸器結(jié)構(gòu)參數(shù)和傳遞設(shè)計扭矩所需要的最小過盈量參數(shù)。 采用有限元分析軟件ANSYS計算出在不同的軸承內(nèi)部參數(shù)與外界參數(shù)對摩擦功耗的影響以及熱量的傳遞與溫度分部。這里面主要考慮的軸承內(nèi)部結(jié)構(gòu)參數(shù)有滾動體的材料、引導(dǎo)方式、套圈的溝曲率系數(shù)和初試接觸角,軸承外部的工況參數(shù)有軸承轉(zhuǎn)速、軸向載荷與徑向載荷。根據(jù)軸承功率損耗和溫度分部的影響,確定了軸承的設(shè)計參數(shù),加工制造了角接觸陶瓷球軸承。 滾動軸承在高速旋轉(zhuǎn)時必須要有相應(yīng)的潤滑與散熱方式,針對高速電機而言,采用油氣潤滑能夠有效地實現(xiàn)對軸承散熱與潤滑,并且可以簡化電機的結(jié)構(gòu)設(shè)計。采用經(jīng)典CFD分析軟件FLUENT,對軸承腔體建模分析,計算出采用油氣潤滑方式得到的軸承腔體流場分布,壓強分布,速度分布與溫度分布,在計算過程中考慮軸承自身發(fā)熱和電機內(nèi)部發(fā)熱共同作用,通過對比不同的邊界條件下的計算結(jié)果,獲得合理的潤滑參數(shù)。 加工制造了永磁啟動發(fā)電機,完成了電機單機旋轉(zhuǎn)63000r/min和對拖形式33000r/min的實驗驗證,結(jié)果表明電機的加工裝配精度、軸承預(yù)緊力、電機驅(qū)動器的參數(shù)對高速電機的正常工作影響很大。
[Abstract]:Electricity as the driving force of the development of human society, people's life is more and more inseparable from the demand for electricity, in some special occasions or where electricity can not be delivered need the support of micro-power stations. Micro movable power station mainly consists of starting generator, gas turbine, power generation and other supporting equipment. This project originates from the joint technical center project of Harbin University of Technology and Aerospace Science and Technology Group, which has great market value. In this paper, the design, analysis and lubrication design of bearing-rotor shafting of high-speed motor are studied and verified by experiments. According to the design requirements of permanent magnet motor rotor, considering the working characteristics of the motor, the rotor shaft structure, bearing arrangement and loading mode, lubrication structure and coupling are determined. High-speed bearing analysis software is used to optimize and design the important parameters and pre-tightening force of bearing, and according to the limits and requirements of test conditions, The structural parameters of the coupling with interference fit and the minimum interference parameters required to transfer the design torque are designed. The influence of internal and external parameters of bearing on friction power consumption, heat transfer and temperature distribution were calculated by finite element analysis software ANSYS. The internal structural parameters of the bearing are the material of the rolling body, the guiding mode, the groove curvature coefficient of the ring and the contact angle of the initial test. The outer working parameters of the bearing include the bearing speed, axial load and radial load. According to the influence of the power loss and temperature segment of the bearing, the design parameters of the bearing are determined and the angular contact ceramic ball bearing is manufactured. The rolling bearing must have corresponding lubrication and heat dissipation when rotating at high speed. For the high speed motor, oil and gas lubrication can effectively realize the heat dissipation and lubrication of the bearing, and simplify the structure design of the motor. The classical CFD analysis software FLUENT, is used to model and analyze the bearing cavity. The flow field distribution, pressure distribution, velocity distribution and temperature distribution of the bearing cavity obtained by oil and gas lubrication are calculated. In the process of calculation, bearing self-heating and internal heating of motor are considered, and reasonable lubrication parameters are obtained by comparing the calculated results under different boundary conditions. The permanent magnet start-up generator is manufactured, and the experimental verification of single machine rotating 63000r/min and drag type 33000r/min is completed. The results show that the machining and assembly precision of the motor and the bearing pretightening force are achieved. The parameters of the motor driver have a great influence on the normal operation of the high-speed motor.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TH133.3

【參考文獻】

相關(guān)期刊論文 前10條

1 楊咸啟;用邊界元法分析滾動軸承熱傳導(dǎo)[J];軸承;1990年04期

2 楊咸啟;軸承系統(tǒng)溫度場分析[J];軸承;1997年03期

3 王建文;安琦;;油氣潤滑最佳供油量研究[J];軸承;2009年01期

4 陳觀慈;王黎欽;古樂;鄭德志;;高速球軸承的生熱分析[J];航空動力學(xué)報;2007年01期

5 敖文偉;蘇華;陳國定;;軸承腔兩相流動數(shù)值模擬[J];機械科學(xué)與技術(shù);2009年08期

6 盛選禹;王聯(lián)奎;;高速旋轉(zhuǎn)聯(lián)軸器的強度分析[J];科技導(dǎo)報;2007年23期

7 吳昊天;陳國定;;航空發(fā)動機軸承腔潤滑的氣液兩相均勻流研究[J];摩擦學(xué)學(xué)報;2007年01期

8 鄧海順,許賢良;凸緣聯(lián)軸器的有限元分析[J];煤礦機械;2004年09期

9 王康;張衛(wèi)正;郭良平;原彥鵬;;內(nèi)燃機連桿大頭軸承潤滑CFD分析[J];內(nèi)燃機學(xué)報;2006年02期

10 陳雪梅,黎文蘭;氣體軸承技術(shù)及其應(yīng)用[J];潤滑與密封;2000年04期

，

本文編號：2455118