A structural design method and device for increasing the energy storage density of a flywheel rotor

A flywheel rotor and energy storage density technology, applied in design optimization/simulation, calculation, instrumentation, etc., can solve problems such as difficult cross-sectional shape design, and achieve the effect of improving energy conversion efficiency and energy storage density

Active Publication Date: 2019-05-14
DALIAN UNIV OF TECH
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Problems solved by technology

The cross-sectional shape design is difficult, and structural stress and mass constraints need to be considered comprehensively. Therefore, how to design the cross-sectional shape of the flywheel rotor becomes extremely critical. At present, there is a lack of a safe and efficient design method to solve this problem

Method used

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  • A structural design method and device for increasing the energy storage density of a flywheel rotor
  • A structural design method and device for increasing the energy storage density of a flywheel rotor
  • A structural design method and device for increasing the energy storage density of a flywheel rotor

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Embodiment Construction

[0035] The specific implementation of the present invention will be described below in conjunction with the technical scheme and the accompanying drawings.

[0036] first step, such as figure 2As shown, the geometric modeling of the pre-processing process is carried out in the finite element ANSYS software. First, create 8 control points (Keypoints) evenly along the radial direction of the rotor, and then use the spline curve fitting creation method (Spline thru KPs) in the curve creation method in ANSYS to form a curve through these 8 points in turn, so that Describe the thickness distribution curve of the rotor along the radial direction, and then create the upper and lower boundaries and the right boundary of the main shaft and rotor. Among them, the coordinate parameters of the 8 control points, that is, the vertical coordinates, are the design parameters, given h 1 initial value, h i (i=2,...,8) initial value, and set h 1 greater than h i the initial value of . The...

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Abstract

The invention belongs to the field of new energy, and provides a structural design method and device for improving the energy storage density of a flywheel rotor. Control points are arranged along the radius direction of the rotor, a spline curve fitting method is used for describing the thickness distribution of the rotor, a flywheel structure parameter optimization model is established, a mathematical method of finite element analysis and structure optimization is adopted to carry out optimal design on the section shape of the flywheel rotor, and a design goal for improving the energy storage density of the flywheel rotor is realized. The method has the effects and the benefits that the thickness distribution of the flywheel rotor is designed to effectively improve energy storage density when quality and structure stress conditions are met. In addition, an end plate is reinforced on the outer layer of the flywheel rotor to effectively lower resistance generated by surrounding fluid during high-speed rotation. The structural design method and device can be widely suitable for designing flywheel structures in various engineering fields.

Description

technical field [0001] The invention belongs to the field of new energy, and relates to a structural design method and device for increasing the energy storage density of a flywheel rotor. Background technique [0002] The energy storage flywheel is a new type of energy storage and conversion device. Today, energy problems are becoming more and more serious. Due to the advantages of large capacity, high efficiency, clean and pollution-free, long life and simple maintenance, energy storage flywheels are widely used in automobiles, aerospace, power systems, nuclear power and other fields. [0003] An important index to evaluate the performance of an energy storage flywheel is the energy storage density, that is, the energy stored by the flywheel rotor per unit mass. Improving the energy storage density of the flywheel can not only efficiently use materials and reduce costs, but also reduce the overall mass of the rotor, thereby reducing the self-weight of the flywheel system ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 姜露吴承伟马建立
Owner DALIAN UNIV OF TECH
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