15MW正压型电机的设计与研制

发布时间：2018-07-10 06:15

本文选题：正压型 + 防爆电机　；参考：《上海交通大学》2014年硕士论文

【摘要】：使用于油气管线、LNG、石化行业等大型防爆领域的正压型防爆电机,使用区域广,不受隔爆性能尺寸公差等限制,功率理论上可以做到与异步电机保持一致(目前国内单机容量最大三相异步电机功率为30MW),同时避免了增安型、无火花型电机的电晕试验考核要求,成为大型防爆领域电驱装备的首选。本文结合15MW正压型防爆电机的试制展开设计研究,简要介绍了防爆电机的分类、执行标准、防爆标志及其含义、设备保护级别EPL分级,阐述了正压型电机的防爆原理、工作流程、结构特点和特殊设计要点。对电机重要电磁参数的选取和调整进行了简要介绍和分析,讨论了其相互影响;并运用相关电磁计算程序进行核算,从设计输入和设计输出的源头相应用户需求;给出了绕组计算的详细流程和理论依据,对电机的绝缘等级和绝缘结构进行重点阐释。然后对15MW正压型电机结构进行了全面介绍,详细介绍了电机定子、转子、冷却系统、轴承、吹扫系统等结构特点;核算了电机轴头强度、铣筋厚度等对电机输出转矩有决定性影响的尺寸;对转轴的挠度和临界转速进行详细核算,并用ANSYS软件进行三维建模校验。其次结合15MW正压型防爆电机的检验内容和型式试验报告,对试制样机的试验结果和设计数据进行对比分析,总结正压型大型防爆电机试制成功的宝贵经验,分析了设计不周之处及存在的问题,指导后续同类产品的设计及制造;编写了正压型大型电机系列样本,列举了YZKS全系列电机型谱,为电机的系列化制造提供参考。最后总结了电机研制成果和关键技术及存在的不足,并对市场应用前景进行了展望,有力推进了大型液化天然气装备的国产化。
[Abstract]:The positive pressure type explosion-proof motor used in oil and gas pipeline LNG, petrochemical industry and other large explosion-proof fields is widely used, and is not restricted by the tolerance of flameproof performance and dimension. In theory, the power can be consistent with the asynchronous motor (at present, the maximum power of the three-phase asynchronous motor is 30MW in our country), and at the same time, the requirements of corona test examination for the safety type and non-spark type motor are avoided. Become the first choice of electric drive equipment in the field of large explosion-proof. Based on the design and research of 15MW positive pressure explosion-proof motor, this paper briefly introduces the classification, execution standard, explosion-proof mark and its meaning, the equipment protection grade EPL classification, and expounds the explosion-proof principle of positive pressure type motor. Work flow, structural features and special design points. This paper briefly introduces and analyzes the selection and adjustment of the important electromagnetic parameters of the motor, discusses the interaction between them, and uses the relevant electromagnetic calculation program to calculate the corresponding user requirements from the source of the design input and the design output. The detailed flow and theoretical basis of winding calculation are given, and the insulation grade and insulation structure of motor are explained emphatically. Then, the structure of 15MW positive pressure motor is introduced in detail, such as stator, rotor, cooling system, bearing, blowing system and so on, and the strength of shaft head is calculated. The thickness of milling bars has a decisive effect on the output torque of the motor, the deflection and critical speed of the shaft are calculated in detail, and the 3D modeling is verified by ANSYS software. Secondly, combined with the test content and type test report of 15MW positive pressure type explosion-proof motor, the test results and design data of the prototype are compared and analyzed, and the valuable experience of successful trial production of the large positive pressure type explosion-proof motor is summarized. In this paper, the defects and problems in the design are analyzed to guide the design and manufacture of similar products, and a series of positive voltage motor series samples are compiled, and the YZKS full-series motor type spectrum is listed, which provides a reference for the serialization manufacture of the motor. Finally, the achievements of motor development, key technologies and shortcomings are summarized, and the prospect of market application is prospected, which can promote the localization of large liquefied natural gas (LNG) equipment.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM302

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