Method for improving kinetic stability of high-stored-energy flywheel metal hub

A technology with high energy storage and stability, applied in the field of mechanical science, to achieve the effect of reducing assembly cooling time, simple method, and reducing the possibility of resonance

Inactive Publication Date: 2014-12-10
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, common related art addresses the compatibility of flywheel components with ultra-light, high-strength composite rims

Method used

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  • Method for improving kinetic stability of high-stored-energy flywheel metal hub

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Embodiment 1

[0017] Embodiment 1 of the present invention: the method for improving the dynamic stability of metal hub of high-energy storage flywheel, by changing the geometric dimension of the metal hub of high-energy storage flywheel, the natural frequency of metal hub is changed, thereby avoids the natural frequency of metal hub and its Resonance is generated due to the same working frequency; and a deflection moment is generated during the rotation of the hub to prevent the rim from falling off the hub and maintain its interference to improve the dynamic stability of the metal hub.

[0018] The structure of the high energy storage flywheel metal hub is as follows: figure 1 As shown, including the inner ring 1 and the outer ring 3, the web 2 is connected between the inner ring 1 and the outer ring 3, and the vertical length from the top to the center of the inner ring 1 is 1 / 2 smaller than the vertical length from the bottom to the center of the inner ring 1 ; The outer ring 3 is provi...

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Abstract

The invention discloses a method and a device for improving kinetic stability of a metal hub of a high-stored-energy flywheel. By changing the geometric dimension of the metal hub of the high-stored-energy flywheel, the natural frequency of the metal hub is changed to avoid resonance resulting from the fact that the natural frequency of the metal hub and the working frequency of the metal hub are the same; and a deflection torque is generated in the rotation process of the hub to prevent the edge of the hub from falling off from the hub and keep the magnitude of interference of the hub, so as to improve the kinetic stability of the metal hub. The natural frequency and the center of the centrifugal force of the hub are changed by changing the geometric dimension of the metal hub, therefore, not only is the probability of resonance generated in the operation is effectively reduced, but also the problem of loss of magnitude of interference of the edge of the hub and the metal hub is effectively solved, and the kinetic stability of the metal hub is improved.

Description

technical field [0001] The invention relates to the field of mechanical science, in particular to a method and a device for improving the dynamic stability of a metal hub of a high-energy storage flywheel. Background technique [0002] High energy storage flywheel system has been studied for more than 30 years as a mechanical energy storage device with long service life, low pollution and low maintenance cost. In the early days, the main element of energy storage was the rim rotor, which was usually made of metal, such as high-strength steel, but the huge centrifugal force during high-speed rotation would cause the metal rotor to split into three major pieces. The total amount of stored energy is not only proportional to the square of the mass of the flywheel and the rotation speed, but also proportional to the ratio of the tensile strength and density of the rotor material, so reducing the mass and increasing the speed can maximize the energy storage of the flywheel energy ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/02
CPCY02E60/16
Inventor 王琬何林杨立张秀华李光喜黄勤赵雪峰冯志国
Owner GUIZHOU UNIV
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