【作者】 陈刚；

【导师】 孔繁余；

【作者基本信息】 江苏大学 ， 流体机械及工程， 2005， 硕士

【摘要】 磁力泵采用磁力传动,实现力矩的无接触传递,是为彻底解决机械传动泵轴封泄漏而设计的无密封、无泄漏、无污染的新型工业用泵。在车船等特定的使用场合,要求泵机组体积小、无泄漏,同时还要求泵具有高的性能参数。采用高速磁力泵可以满足这些特殊要求。高速磁力泵由变频电机直接驱动外磁转子,磁力穿越隔离套,使内磁转子旋转,内磁转子无轴封,实现无泄漏输送。高速磁力泵的特点是转速高、无轴封、无泄漏。 本文结合某军工工程的实际需要,设计研制GCB90-70型400Hz高速磁力泵。分析了高速磁力泵磁转子的运行机理,利用数值方法求解了永磁体磁场,通过合理的结构设计解决了汽蚀、噪音,轴向力平衡等关键技术问题。 磁力泵由于结构上的特殊性,决定了其能量损失构成因素的复杂性,且能量损失较其它类型泵大。本文在能量分析的基础上提出了以求效益最高为目标的单目标优化设计数学模型,为优化设计磁力泵效率提供了理论依据。 在磁力泵的设计中,磁转矩计算十分重要,工程上常用的公式作为简易快速的计算方法具有一定的实用型。但是传统的基于磁路的计算只能求出永磁机构各部分的场量平均值而无法求出场的分布形态,这就意味着不能掌握永磁磁极在不同角度下的工作点。利用有限元软件对磁力传动的结构参数进行模拟、分析,可以准确计算场的分布,也避免了单纯利用实验方法进行设计时周期长、费用高的不足。 内磁转子轴向力的平衡直接影响泵机组的寿命和运转的可靠性。在要求具有最小轴向尺寸的前提下,利用冷却循环回路来减小内磁转子右端轴向力的分布,同时冷却了滑动轴承和隔离套。经过实际运转证明各轴向力几乎达到完全平衡。 作为一种高转速小流量的无泄漏泵,无论是从结构设计,水力设计和磁路设计等方面都不能完全照搬传统的设计经验。本文设计成功的高速磁力泵为今后类似产品的开发积累了经验,具有重要的实用价值。更多还原

【Abstract】 Magnetic drive pump utilizing magnet coupling, achieving non-contact moment transfer, is a new kind of sealless, non-leakage, non- contamination industry pump for thoroughly solving mechanical seal problems. In the special occasions such as vehicle and vessel, the pump units are required not only small volume, non-leakage, but also high performance. High speed magnetic drive pump just fulfills the special requirements. High-speed magnetic drive pump is driven directly by a 400Hz motor, magnet force penetrates through the shroud and impels the inner rotor rotate,the inner rotor has no shaft seal then there will be no leakage during transportation. The characteristic of the pump is high speed, having no shaft seal, and requires high reliability.Based on some military project, the paper presents the process of designing a kind of GCB90-70 model 400Hz high speed magnetic drive pump. The operation states of the magnetic rotor in the high-speed magnetic drive pump is analyzed, the permanent magnetic field is calculated by numerical method, the key technologies such as cavitation, noise, axial force balance are solve by appropriate configuration design.Because of the special configuration, the energy loss problem is very complicated and the amount is bigger than other types of pumps. In this paper, a mathematical optimization model is educed based on the analysis of energy loss.In the designing of magnetic pumps, magnetic torque calculation is very important.In engineering field, the constantly used equations have a practicality. But the traditional methods can only calculate the average values in the magnetic fields, this means these methods can not plot the magnetic field and can not solve operation points at different angels. Utilizing a kind of FEM(finite element method) software the permanent magnetic configuration is simulated and analyzed, the magnetic field can be calculated very precisely, and also avoid the disadvantages of actual experiments such as long cycle and high expenditure.The balance of axial force on inner magnetic rotor directly affects the operation states and life of pump units. In the precondition of minimal axial dimensions, theright axial force is balanced utilizing a kind of cooling loop, the metal shroud and sliding bears are also cooled. The axial force is proved almost completely balanced through practical operation.As a kind of high-speed low-flow non-leakage pump, not only the configuration design but also the hydraulic design can not be the same with the traditional design experiences. The successful design of high-speed magnetic drive pump accumulates experiences for future similar development, and has an important practical value.更多还原