本文選題：永磁磁力耦合器 + 軟啟動(dòng)　； 參考：《煤炭科學(xué)研究總院》2017年碩士論文

【摘要】：永磁磁力耦合器利用導(dǎo)體盤(pán)與永磁體盤(pán)無(wú)接觸相對(duì)轉(zhuǎn)動(dòng),通過(guò)磁場(chǎng)穿過(guò)工作氣隙進(jìn)行力矩和運(yùn)動(dòng)的傳遞,且可以通過(guò)調(diào)節(jié)兩盤(pán)之間的氣隙寬度來(lái)調(diào)整控制傳遞扭矩和負(fù)載速度。它具有結(jié)構(gòu)簡(jiǎn)單、環(huán)境適應(yīng)力強(qiáng)、節(jié)能環(huán)保、隔離振動(dòng)傳遞、避免產(chǎn)生電力諧波和電磁干擾等優(yōu)點(diǎn),現(xiàn)在已經(jīng)成功應(yīng)用在電力、石油、化工等行業(yè),但在煤礦生產(chǎn)中的應(yīng)用還不成熟。本文針對(duì)礦用帶式輸送機(jī),對(duì)永磁磁力耦合器的設(shè)計(jì)與分析方法展開(kāi)如下研究:(1)詳細(xì)綜述了永磁磁力耦合器的基本結(jié)構(gòu)特點(diǎn)和工作原理,根據(jù)煤礦上的工作狀況,參考現(xiàn)有永磁磁力耦合器的結(jié)構(gòu)和性能,對(duì)盤(pán)式永磁磁力耦合器展開(kāi)詳細(xì)結(jié)構(gòu)分析和磁路設(shè)計(jì)。通過(guò)比較永磁體不同充磁方向?qū)S向氣隙的磁感應(yīng)強(qiáng)度的影響,確定了永磁體的充磁方向應(yīng)沿永磁體盤(pán)的軸向充磁。通過(guò)對(duì)不同永磁材料的比較和分析,最終選擇了釹鐵硼永磁體材料。(2)根據(jù)永磁磁力耦合器結(jié)構(gòu)特點(diǎn)和材料屬性進(jìn)行電磁場(chǎng)分析,利用Ansoft軟件對(duì)永磁磁力耦合器建立三維模型并對(duì)模型進(jìn)行有限元靜態(tài)、瞬態(tài)仿真,并針對(duì)不同因素對(duì)永磁磁力耦合器輸出轉(zhuǎn)矩的影響進(jìn)行分析和研究。根據(jù)仿真分析結(jié)果對(duì)永磁磁力耦合器的各參數(shù)尺寸進(jìn)行優(yōu)化。(3)根據(jù)傳熱學(xué)理論及永磁磁力耦合器的實(shí)際運(yùn)行狀態(tài),利用Ansys Workbench軟件對(duì)永磁磁力耦合器進(jìn)行穩(wěn)態(tài)溫度場(chǎng)計(jì)算及溫升情況分析,確保永磁磁力耦合器能夠安全可靠地運(yùn)行。(4)針對(duì)大型帶式輸送機(jī)的技術(shù)要求,本文從礦用帶式輸送機(jī)的啟動(dòng)曲線出發(fā),研究永磁磁力耦合器的軟啟動(dòng)特性。通過(guò)給定的帶式輸送機(jī)的啟動(dòng)速度曲線計(jì)算出永磁磁力耦合器的輸出端的轉(zhuǎn)速與轉(zhuǎn)矩隨時(shí)間的變化值,結(jié)合仿真得到的永磁磁力耦合器的氣隙與轉(zhuǎn)速的關(guān)系,最終得到永磁磁力耦合器的氣隙隨時(shí)間的變化情況。
[Abstract]:The permanent magnet magnetic coupler transfers the torque and motion through the working air gap by using the conductor disk and the permanent magnet disk without contact relative rotation, and can adjust the transfer torque and load speed by adjusting the air gap width between the two disks. It has the advantages of simple structure, strong adaptability to the environment, energy saving and environmental protection, isolation of vibration transmission, avoiding the generation of power harmonics and electromagnetic interference, and has been successfully applied in power, petroleum, chemical and other industries. But the application in the coal mine production is not mature. In this paper, the design and analysis methods of permanent magnet magnetic coupler are studied as follows: (1) the basic structure characteristics and working principle of permanent magnet magnetic coupler are summarized in detail, and according to the working condition in coal mine, the design and analysis method of permanent magnet magnetic coupler are studied as follows: (1) the basic structure and working principle of permanent magnetic coupler are summarized in detail. Referring to the structure and performance of the present permanent magnet magnetic coupler, the structure analysis and magnetic circuit design of the disc type permanent magnet magnetic coupler are carried out in detail. By comparing the effect of different magnetization directions on the magnetic induction intensity of the axial air gap, it is determined that the magnetization direction of the permanent magnet should be along the axial magnetization direction of the permanent magnet disk. Through the comparison and analysis of different permanent magnetic materials, the NdFeB permanent magnet material is finally selected. (2) electromagnetic field analysis is carried out according to the structure characteristics and material properties of the permanent magnetic coupler. The 3D model of permanent magnet magnetic coupler is established by using Ansoft software, and the finite element static and transient simulation of the model is carried out, and the influence of different factors on the output torque of permanent magnet magnetic coupler is analyzed and studied. According to the results of simulation analysis, the parameters of permanent magnetic coupler are optimized. (3) according to the theory of heat transfer and the actual operation state of permanent magnetic coupler, The steady-state temperature field calculation and temperature rise analysis of permanent magnet magnetic coupler are carried out by using Ansys Workbench software to ensure that the permanent magnet magnetic coupler can operate safely and reliably. (4) according to the technical requirements of large belt conveyor, Starting from the starting curve of mine belt conveyor, the soft start characteristics of permanent magnet magnetic coupler are studied in this paper. The speed and torque of the output end of the permanent magnet magnetic coupler are calculated by the given starting speed curve of the belt conveyor, and the relationship between the air gap and the rotational speed of the permanent magnet magnetic coupler is obtained by combining the simulation results. Finally, the air gap of permanent magnet magnetic coupler is obtained.
【學(xué)位授予單位】：煤炭科學(xué)研究總院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TD528.1

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