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Flywheel rotor hub adopting steel-wire prestressing force winding structure

A flywheel rotor and steel wire winding technology, which is applied in flywheels and other directions, can solve the problems of large composite material layer size, limited ultimate strength of metal hubs, and high production costs, so as to increase energy storage density, reduce cracking tendency, and improve service performance. Effect

Active Publication Date: 2014-06-04
北京奇峰聚能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the limited ultimate strength of metal hubs makes the composite layer size large and expensive to produce

Method used

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  • Flywheel rotor hub adopting steel-wire prestressing force winding structure
  • Flywheel rotor hub adopting steel-wire prestressing force winding structure

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] like figure 1 As shown, the flywheel rotor described in this example is disc-shaped composed of a metal base hub 1 and a steel wire prestressed winding layer 2, and the center of the flywheel rotor is a bearing hole 3 for connecting with the flywheel. When in use, it is only necessary to install the rotor manufactured according to the above structure on the bearing of the flywheel through the bearing hole 3 .

[0019] The metal base hub 1 can be made of ultra-high-strength steel, titanium alloy or high-strength aluminum alloy in the prior art, and the high-strength steel wire is wound on the metal hub base under normal stress by a winding machine. During the winding process, in order to avoid the compression deformation of the metal hub base due to the winding tension of the outer steel wire, which will cause the tension reduction of the inner steel wire and the relaxation of the winding layer of the steel wire, a variable tension winding process with monotonically decr...

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Abstract

The invention relates to a flywheel rotor hub adopting a steel-wire prestressing force winding structure, which includes a metal hub base body and a steel-wire winding layer, wherein the metal hub base body is disk-shaped or cylindric; the steel-wire winding layer is formed on the outer surface of the metal hub base body; and the metal hub base body and the steel-wire wind layer are tightly connected in a winding manner through prestressing force. The hub adopting the structure can change the stress state of the hub of the flywheel rotor, greatly improve the service intensity and service performance, reduce the failure and damage ratio of the entire flywheel system, and enable the flywheel rotor to be used reliably; and the flywheel rotor hub provided by the invention can effectively increase the inner and outer radius ratio of the rotor, improve the energy storage density of the flywheel and remarkably reduce the manufacturing cost of the rotor at the same time.

Description

technical field [0001] The invention relates to a flywheel energy storage component, in particular to a high-strength, low-cost flywheel rotor metal hub used in a flywheel energy storage system. technical background [0002] The flywheel rotor is the most important link in the flywheel energy storage system, and the selection of flywheel materials with high tensile strength is a prerequisite for the flywheel battery to store more energy. In order to improve the energy storage capacity of the flywheel, the method of increasing the rotational speed is generally adopted to meet the requirement of high energy storage. As the speed increases, the centrifugal force on the rotor gradually increases. When the radial tensile stress of the rotor exceeds the strength of the hub, the rotor hub will be damaged. This limitation restricts the energy storage density and the improvement of energy storage energy of the energy storage flywheel, and will lead to catastrophic vicious accidents ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/30
Inventor 蒋涛刘芝秀
Owner 北京奇峰聚能科技有限公司
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