考虑加工精度等级的核动力潜艇永磁电机转子结构不平衡振动响应分析

廖子豪; 宾光富; 李超; 高耀智

doi:10.13433/j.cnki.1003-8728.20220154

考虑加工精度等级的核动力潜艇永磁电机转子结构不平衡振动响应分析

doi: 10.13433/j.cnki.1003-8728.20220154

1.
湖南科技大学机械设备健康维护湖南省重点实验室，湖南湘潭　411201
2.
湖南湘电动力有限公司，湖南湘潭　411101

基金项目: 国家自然科学基金项目（51775030, 51575176）、湖南省自然科学基金项目（2019JJ40084, 2023JJ50230）及湘潭市重大技术攻关项目（ZX-ZD20221002）

详细信息

作者简介:
廖子豪（1992−），硕士，研究方向为转子振动分析及抑制，liaozh0812@163.com

通讯作者:
宾光富，教授，博士生导师，博士，abin811025@163.com

中图分类号: TH161
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- 文章访问数: 72
- HTML全文浏览量: 47
- PDF下载量: 14
- 被引次数: 0
出版历程
- 收稿日期: 2019-10-12
- 刊出日期: 2023-11-30

Unbalanced Vibration Response Analysis of Nuclear Power Submarine Permanent Magnet Motor Considering its Accuracy Grade

1.
Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment, Hunan University of Science and Technology, Xiangtan 411201, Hu'nan, China
2.
Hunan Electric Power Co., Ltd., Xiangtan 411101, Hu'nan, China

摘要

摘要: 针对低速巡航下核动力潜艇永磁电机转子振动控制要求高、且因永磁体结构磁干扰难以通过动平衡机进行不平衡量控制的问题，提出一种从加工工艺精度来减少转子结构不平衡振动响应的分析方法，以满足潜艇巡航时低振动隐蔽性的需求。首先根据零部件加工工艺情况，构建出五种典型加工工艺的公差模型，揭示加工精度等级与转子结构不平衡量之间的内在关系，然后采用有限元法，建立典型加工工艺下转子不平衡激励下的动力学模型，通过稳态同步响应分析得出转子的振动响应图谱，最后根据振动响应值大小来评价加工精度等级对转子振动的影响程度，找出巡航状态89 r/min额定转速下电机转轴同轴度加工精度对电机振动幅值影响最大，而电机转轴端面平面度的影响最小。论文结论可为在满足装配需求前提下转子加工精度等级的优化提供参考。
- 永磁电机转子 /
- 加工精度等级 /
- 公差模型 /
- 结构不平衡 /
- 振动响应
Abstract: Aiming at the problems that the permanent magnet motor of the nuclear-powered submarine under low-speed cruise has high vibration reduction requirements and the magnetic interference make it difficult to control the unbalance by the balancing machine, an analytical method for reducing the unbalanced vibration response of rotor structures is proposed by improving machining process accuracy, to meet to good disguise requirement of the submarine. Firstly, according to the processing technology, a tolerance model for five typical machining processes is constructed, and the intrinsic relationship between machining tolerances and rotor unbalance is revealed. Then, the finite element method is used to establish the dynamic model under the unbalanced excitation of the rotor. The vibration response map of the rotor is obtained by the steady-state synchronous response analysis. Finally, according to the vibration response value, the influence degree of the machining process on the rotor vibration is evaluated, find out the crucible state 89 r/min rated speed motor shaft coaxiality processing accuracy has the greatest impact on the motor vibration amplitude, and the influence of the flatness of the shaft end face is the smallest. The conclusion can provide reference for the selection and optimization of rotor machining accuracy grade under the premise of meeting assembly requirements.
- permanent magnet motor rotor /
- machining accuracy grade /
- tolerances model /
- structural unbalance /
- vibration response

HTML全文

图 1 轴颈圆跳动公差模型

Figure 1. Circular run-out tolerance model of a journal

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图 2 同轴度公差模型

Figure 2. Coaxiality tolerance model

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图 3 平面度公差模型

Figure 3. Plane tolerance model

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图 4 支撑板偏移公差模型

Figure 4. Offset tolerance model of a support plate

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图 5 槽对称度加工精度模型

Figure 5. Symmetrical machining accuracy model of a slot

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图 6 核动力潜艇推进永磁电机转子模型

Figure 6. Rotor model of nuclear power submarine propulsion permanent magnet motor

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图 7 不同加工工艺及其精度对应的不平衡量

Figure 7. Unbalance values corresponding to different machining processes and accuracy

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图 8 电机转子动力学有限元模型

Figure 8. Rotor dynamics finite element model of motor

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图 9 1阶振型及临界转速（5 271 r/min）

Figure 9. 1 order mode and critical speed (5271 r/min)

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图 10 转速89 r/min时轴承处振动幅值

Figure 10. Bearing vibration amplitude at 89 r/min

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表 1 5种典型加工工艺对应的回转半径

Table 1. Rotation radius of 5 typical machining processes

名称作用区域回转半径/mm

圆跳动轴颈端面 350
同轴度转轴表面 330
平面度转轴端面 270
偏移量支架 430
对称度支架环 1000

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