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Numerical Calculation and Experiment of Coupled Dynamics of the Differential Velocity Vane Pump Driven by the Hybrid Higher-order Fourier Non-circular Gears

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Abstract

The transmission systems of the differential velocity vane pumps (DVVP) have periodic vibrations under loads. And it is not easy to find the reason. In order to optimize the performance of the pump, the authors proposed DVVP driven by the hybrid Higher-order Fourier non-circular gears and tested it. There were also similar periodic vibrations and noises under loads. Taking into account this phenomenon, the paper proposes fluid mechanics and solid mechanics simulation methodology to analyze the coupling dynamics between fluid and transmission system and reveals the reason. The results show that the pump has the reverse drive phenomenon, which is that the blades drive the non-circular gears when the suction and discharge is alternating. The reverse drive phenomenon leads the sign of the shaft torque to be changed in positive and negative way. So the transmission system produces torsional vibrations. In order to confirm the simulation results, micro strains of the input shaft of the pump impeller are measured by the Wheatstone bridge and wireless sensor technology. The relationships between strain and torque are obtained by experimental calibration, and then the true torque of input shaft is calculated indirectly. The experimental results are consistent to the simulation results. It is proven that the periodic vibrations are mainly caused by fluid solid coupling, which leads to periodic torsional vibration of the transmission system.

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Acknowledgements

The research was supported by the Project of fundamental Commonweal Research of Zhejiang Province (No. LGG18E050004); the National Natural Science Foundation of China (No. 51305403 and No. 51675486); the Scientific and Technological Planning Project of Department of Water Resources of Zhejiang Province (No. RC1744).

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Authors and Affiliations

  1. Faculty of Mechanical Engineering & Automation, Zhejiang Sci-Tech University, Hangzhou, 310018, China

    Gaohuan Xu & Jianneng Chen

  2. School of Mechanical & Automotive Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou, 310018, China

    Gaohuan Xu & Huacheng Zhao

  3. Zhejiang Province Key Laboratory of Transplanting Equipment and Technology, Hangzhou, 310018, China

    Jianneng Chen

Authors
  1. Gaohuan Xu
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  2. Jianneng Chen
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  3. Huacheng Zhao
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Corresponding author

Correspondence to Jianneng Chen.

Additional information

This study is financially supported by the Project of fundamental Commonweal Research of Zhejiang Province (Grant No. LGG18E050004); the National Natural Science Foundation of China (Grant No. 51305403 and No. 51675486).

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Xu, G., Chen, J. & Zhao, H. Numerical Calculation and Experiment of Coupled Dynamics of the Differential Velocity Vane Pump Driven by the Hybrid Higher-order Fourier Non-circular Gears. J. Therm. Sci. 27, 285–293 (2018). https://doi.org/10.1007/s11630-018-1010-7

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  • DOI: https://doi.org/10.1007/s11630-018-1010-7

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