电潜泵esp被动磁径向轴承系统的研制

P. Mcmullen, David Biddick, Artinian Herman
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引用次数: 0

摘要

这一进展是DeepStar公司为井下工具建立和测试一种新型径向被动磁轴承系统(PMB)的结果。磁驱动系统(MDS)是一种先进的高速电潜泵,利用磁场来提高性能、可靠性和可回收性,该技术适用于传统的电潜泵。PMB通过大间隙支撑电机转子,无需通过ESP中的磁场进行物理接触。MDS公司开发了一个ESP初步设计方案,并据此确定了PMB的尺寸和集成要求。这些要求指导了全尺寸部件的分析、设计和测试。使用经验分析工具对PMB的尺寸和性能进行初始迭代,然后使用商业验证工具进行详细的磁性有限元分析(FEA),以进行最终性能预测。通过性能分析验证,进行了详细设计和硬件制造。硬件测试是为了验证性能预测和与系统需求的一致性。PMB的可行性、初步设计和分析是在DeepStar计划的第一阶段进行的,并继续进行第二阶段的全面设计、建造和测试结果。PMB性能结果包括静态负载事件期间的负载能力和偏转,所有这些都与验证MDS系统中使用的性能有关。该测试数据用于验证所使用的分析方法,并最终确定PMB的集成尺寸,以满足MDS系统的性能要求。由于转子和定子磁铁之间的PMB大(>14mm)间隙,测试还包括转子相对于定子的轴向和径向位置的变化,以考虑MDS的安装变化以及转子和定子上密封材料的使用。计划在MDS中使用PMB进行集成,因此计划进行集成测试以验证每个领域的性能。该技术提供了一个径向轴承,可以大大提高ESP的性能和可靠性。PMB是一种无接触轴承系统,不需要润滑,可以在大间隙下运行,允许流体自由流动,很容易与环境完全密封,几乎没有轴承旋转损失,并且没有使用寿命限制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development of a Passive Magnetic Radial Bearing System for Electric Submersible Pumps ESPs
This development is the result of a DeepStar program to build and test a new radial passive magnetic bearing system (PMB) for downhole tools. While slated for the Magnetic Drive System (MDS) ESP, an advanced high-speed ESP that uses magnetic fields to increase performance, reliability and retrievability, this technology is applicable to conventional ESPs. The PMB supports the motor rotor across large clearances with no physical contact via magnetic fields in the ESP. An MDS ESP preliminary design was developed, from which the size and integration requirements of the PMB were defined. These requirements guided the analysis, design and testing of the full-scale components. Empirical analysis tools were used for initial iterations in size and performance of the PMB, followed by detailed magnetic finite element analysis (FEA) using commercial validated tools for the final performance prediction. With analytical validation of performance, detail designs were developed and hardware fabricated. Hardware testing was done to validate performance predictions and alignment with system requirements. The feasibility, preliminary design and analysis of the PMB were conducted in Phase 1 of the DeepStar Program and has continued with the full-scale design, build and test results of Phase 2. PMB performance results include load capability and deflection during static load events, all in relation to validating performance for use in the MDS system. This test data is used to validate the analysis approach used as well as to finalize the integration size of the PMB to meet the performance requirements of the MDS system. With the PMB large (>14mm) clearance between rotor and stator magnets, testing also includes variations in axial and radial position of the rotor in relation to the stator to account for installation variations in the MDS as well as use of sealing materials on both the rotor and stator. Integration is planned for use of the PMB in the MDS, so integration testing is planned to validate performance for each of these areas. This technology offers a radial bearing that can greatly enhance ESP performance and reliability. The PMB is a contact-less bearing system that does not require lubrication, can operate with large clearances to allow free fluid flow, is easily fully sealed from the environment, has virtually no bearing rotating losses, and has no operating life limits.
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