A method for determining the rotational speed of a shaft regulated by a non-Newtonian fluid

By filling the shear thickening non-Newtonian fluid in the shaft sleeve gap of the rotating shaft, and adjusting the rotation speed of the rotating shaft with its flow characteristics, the problems of high energy consumption and noise pollution in the prior art are solved, and stable and efficient speed adjustment is achieved.

CN115494257BActive Publication Date: 2025-03-25XIANGTAN UNIV
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Patent Information

Application Number
CN202210213656.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-03-04
Publication Date
2025-03-25
Estimated Expiration
2042-03-04

AI Technical Summary

Technical Problem

In the industrial technology field involving shaft rotation, existing methods of adjusting shaft speed usually require a large amount of energy consumption and generate noise pollution, making it difficult to achieve stable and efficient speed adjustment.

Method used

By designing a sleeve that matches the shaft and filling the shear thickening non-Newtonian fluid in the sleeve gap, the rotation speed of the shaft is adjusted using its flow characteristics. The method includes theoretical calculations, seal design, selection and perfusion of non-Newtonian fluids, and experimental observations to determine reasonable parameter values ​​and rotation speeds.

Benefits of technology

This method can effectively reduce energy consumption, reduce noise pollution, and achieve stable speed adjustment, providing a new, easy and simple method to adjust the speed of the shaft.

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Abstract

The present invention discloses a method for determining the rotation speed of a rotating shaft regulated by a non-Newtonian fluid, and the invention comprises: (1) performing a dynamic analysis on the rotation of a rotating shaft in a sleeve, wherein a gap is provided between the shaft and the sleeve, and a shear-thickening non-Newtonian fluid is provided in the gap; (2) calculating the values ​​of parameters such as sleeve length, gap thickness, and non-Newtonian fluid properties in a reasonable dynamic control equation according to the rotation speed requirement of the rotating shaft; (3) designing and processing the sleeve and the non-Newtonian fluid injection (and release) orifices on the sleeve according to the calculation results, and selecting a suitable non-Newtonian fluid; (4) injecting the non-Newtonian fluid into the gap and sealing it, carrying out a rotating shaft rotation experiment, and measuring and examining the regulation result of the non-Newtonian fluid flow on the rotating shaft rotation speed; (5) comparing and analyzing the experimental test results with the theoretical calculation results, and finally determining the size of the rotating shaft rotation speed regulated by the non-Newtonian fluid. The method proposed by the present invention is simple and practical, and has important guiding significance for the rotation speed regulation in the field of rotating shaft rotation.
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