發(fā)布時(shí)間：2018-03-24 02:06

  本文選題：磁力聯(lián)軸器　切入點(diǎn)：“濕”態(tài)　出處：《江蘇大學(xué)》2017年碩士論文

【摘要】：磁力泵因其無(wú)泄漏特性廣泛用于制藥、航空航天等領(lǐng)域。磁力泵高速化可以提高泵效率,減小泵體積。磁力聯(lián)軸器作為磁力泵的核心部件,高轉(zhuǎn)速下磁力聯(lián)軸器“濕”式渦流損失、磁場(chǎng)分布、液磁相干特性尚不清楚。本課題以圓筒式徑向充磁的磁力聯(lián)軸器為研究對(duì)象,開展高速磁力傳動(dòng)液磁相干特性研究,對(duì)于提高高速磁力泵的效率和穩(wěn)定性具有重要的工程意義,對(duì)于高速磁力傳動(dòng)理論具有重要的學(xué)術(shù)價(jià)值。本文的主要工作和研究成果如下:1.較為系統(tǒng)的總結(jié)了磁力聯(lián)軸器國(guó)內(nèi)外研究的發(fā)展歷程,建立了圓筒形徑向充磁的磁力聯(lián)軸器模型,對(duì)比分析了靜磁場(chǎng)及瞬態(tài)磁場(chǎng),進(jìn)而得出感應(yīng)磁場(chǎng)的分布。圓筒式徑向充磁的磁力聯(lián)軸器起主要作用的是磁場(chǎng)徑向分量,因此重點(diǎn)分析了轉(zhuǎn)速對(duì)磁場(chǎng)徑向分量的影響。結(jié)果表明:隨著轉(zhuǎn)速的增加,感應(yīng)磁場(chǎng)增強(qiáng),對(duì)原磁場(chǎng)的削弱程度增強(qiáng),而且轉(zhuǎn)速越高,磁場(chǎng)下降越快,10000rpm時(shí)下降最多,為1.7%。2.建立了圓筒形徑向充磁磁力聯(lián)軸器扭矩計(jì)算的解析模型,并采用有限元法仿真,分析了在不忽略感應(yīng)磁場(chǎng)的情況的扭矩特性,以及轉(zhuǎn)差角、轉(zhuǎn)速對(duì)傳遞扭矩的影響規(guī)律。得知:(1)傳遞扭矩隨著轉(zhuǎn)差角的增加而增加,在15°(180°/n,n為磁極數(shù),本研究中n為12)時(shí)達(dá)到最大,這與不考慮感應(yīng)磁場(chǎng)時(shí)的變化規(guī)律相同;(2)隨著轉(zhuǎn)速增加,傳遞扭矩近似線性下降,并且轉(zhuǎn)差角越小,轉(zhuǎn)速對(duì)扭矩的影響越大。3.設(shè)計(jì)磁場(chǎng)發(fā)生裝置,并配置不同質(zhì)量濃度的NaCl溶液,實(shí)驗(yàn)探究不同強(qiáng)度磁場(chǎng)對(duì)導(dǎo)電液體的粘度及電導(dǎo)率的影響規(guī)律,具有創(chuàng)新性。實(shí)驗(yàn)獲知:(1)隨著磁場(chǎng)增強(qiáng),溶液電導(dǎo)率增加,但并非嚴(yán)格意義上的持續(xù)增加,增加到一定程度后甚至出現(xiàn)下降趨勢(shì);(2)外加磁場(chǎng)對(duì)NaCl溶液和去離子水的粘度確有影響,隨著外加磁場(chǎng)的增強(qiáng),粘度值變大,之后趨于穩(wěn)定;(3)溶液中粒子越多,粘度值受磁場(chǎng)影響越明顯。4.建立“濕”態(tài)磁力聯(lián)軸器模型,分析計(jì)算了不同電導(dǎo)率的輸送介質(zhì)及不同材質(zhì)的隔離套產(chǎn)生的渦流損失。在此基礎(chǔ)上探究了轉(zhuǎn)速、輸送介質(zhì)電導(dǎo)率、隔離套材質(zhì)、磁極對(duì)數(shù)、隔離套厚度對(duì)渦流損失的影響規(guī)律,并提出了5種減少渦流損失的方法。得知:(1)隨著溶液電導(dǎo)率的增加渦流損失逐漸增加;(2)隔離套材質(zhì)不同,渦流損失也不相同,電導(dǎo)率越高,渦流損失越大,材質(zhì)為1Cr18Ni9Ti時(shí)產(chǎn)生的渦流損失約為TC4的2倍;(3)渦流損失隨著轉(zhuǎn)速的升高先增加后減小,存在極大值和極小值,在4000rpm附近達(dá)到最大值,8000rpm附近達(dá)到最小值,8000rpm時(shí)隔離套產(chǎn)生的渦流損失比4000rpm時(shí)的渦流損失減小82.43%;(4)轉(zhuǎn)速不同,磁極數(shù)與渦流損失的關(guān)系略有不同,轉(zhuǎn)速在1000rpm~7000rpm時(shí),渦流損失隨著磁極數(shù)的增加存在極大值和極小值:磁極數(shù)為8時(shí)渦流損失最大,磁極數(shù)為12時(shí)渦流損失最小。轉(zhuǎn)速在7000rpm~10000rpm時(shí),渦流損失隨著磁極數(shù)的增加存在極小值,12級(jí)時(shí)渦流損失最小。另外,隨著磁極數(shù)的增加,渦流損失的極值具有向轉(zhuǎn)速小的方向移動(dòng)的趨勢(shì);(5)隔離套越厚,其產(chǎn)生的渦流損失越大。不同厚度的隔離套,轉(zhuǎn)速對(duì)渦流損失的影響規(guī)律一致,即在4000rpm附近達(dá)到最大值,8000rpm附近達(dá)到最小值。5.設(shè)計(jì)并搭建了高速磁力傳動(dòng)試驗(yàn)臺(tái),為后續(xù)試驗(yàn)探究磁力聯(lián)軸器高速磁力傳動(dòng)性能奠定基礎(chǔ)。
[Abstract]:Magnetic pump because of its no leakage characteristics are widely used in pharmaceutical, aerospace and other fields. High speed magnetic pump can improve the pump efficiency, reduce the pump volume. As a core component of magnetic coupling of magnetic pump, high speed magnetic coupling "wet" type eddy current loss, magnetic field distribution, magnetic fluid coherence is not clear. In this paper the magnetic coupling of cylindrical radial magnetization as the research object, and carry out the high-speed magnetic drive liquid magnetic coherence research, for it has important engineering significance to improve the efficiency and stability of high speed magnetic pump, which has important academic value for the high-speed magnetic drive theory. The main work and research results are as follows: 1. systematically summarized the development process the magnetic coupling research at home and abroad, establishes a model of magnetic coupling of cylindrical radial magnetizing, comparative analysis of the static magnetic field and transient magnetic field, leading to the induction The distribution of the magnetic field. The magnetic coupling of cylindrical radial magnetizing played a major role in the radial component of the magnetic field, so focus on the analysis of the effect of rotational speed on the radial component of the magnetic field. The results show that with the increase of rotational speed, magnetic field enhancement, enhancement of the level of weakening the original magnetic field, and the higher the speed, the magnetic field decreased more quickly, 10000rpm when the largest decline, an analytical model of calculating radial magnetization magnetic coupling torque is 1.7%.2., and the finite element method simulation, analysis of the torque characteristics in neglect induced magnetic field conditions, and the slip angle, speed on the influence of torque transmission. That: (1) torque increases with increasing slip angle, at 15 degrees (180 degrees /n, n is the number of poles, in this study, n 12) the maximum, which is consistent with the change rule of not considering induction magnetic field; (2) increase with the speed, torque transmission under linear approximation Drop and slip angle is small, the greater the effect of rotational speed on the torque.3. design of magnetic field generating device, and configure the NaCl solution of different concentration, the law to explore the impact of different intensity of magnetic field on the viscosity and conductivity of conducting liquid, innovative experiment. That: (1) with the increase of the magnetic field, the conductivity increased, but not strictly increasing, increased to a certain extent even decline; (2) the viscosity is the influence of magnetic field on NaCl solution and deionized water, with increasing the magnetic field, the viscosity value becomes large, then tends to be stable; (3) more particles in solution viscosity affected by magnetic fields the more obvious.4. to establish a "wet" state magnetic coupling model, analysis and calculation of the transmission medium with different conductivities and different material isolation sets generated eddy current losses. On the basis of the inquiry speed, transmission medium conductivity, vibration From the set of material, magnetic pole logarithm, influence of isolated sets of thickness on the eddy current loss, and puts forward 5 methods to reduce the eddy current loss. That: (1) with the increase of eddy current loss of solution conductivity gradually increased; (2) isolated sets of different materials, the eddy current loss is not the same, the higher the conductivity, eddy current loss is large eddy current loss of material for the 1Cr18Ni9Ti generated is about 2 times of TC4; (3) the eddy current loss with the increase of speed increased first and then decreased, the maximum value and the minimum value reached the maximum in the vicinity of 4000rpm, near 8000rpm, reaches a minimum, 8000rpm isolation sets generated eddy loss than the eddy current loss of 4000rpm the decrease of 82.43%; (4) the relationship between the number of poles and different speeds, the eddy current loss is slightly different, the speed in the 1000rpm~7000rpm, the eddy current loss with maximum and minimum values are increasing the number of poles of the magnetic pole number of eddy current loss of 8 maximum number of poles. To minimize the eddy current loss of 12. The speed at 7000rpm~10000rpm, eddy current loss minima with increasing the number of poles, the minimum eddy current loss at level 12. In addition, with the increase of the number of poles, the eddy current loss has moved to the extreme speed in the direction of the trend; (5) the isolation sleeve is thicker, the eddy current loss the more isolated sets of different thickness, consistent effect of rotational speed on the eddy current loss, which reached the maximum in the vicinity of 4000rpm, near 8000rpm, reaches a minimum value of.5. was designed and built in high-speed magnetic drive test bench, lay the foundation for the subsequent performance of high-speed magnetic drive coupling experiments on the magnetic force.

【學(xué)位授予單位】：江蘇大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TH38

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 何富君;仲于海;張瑞杰;宋雪梅;;永磁渦流耦合傳動(dòng)特性研究[J];機(jī)械工程學(xué)報(bào);2016年08期

2 葛研軍;張帥;姜玉龍;王s，

本文編號(hào)：1656208