A real-time high-temperature warning system for power equipment based on tubular chiral thermodynamic metamaterials

Through the buckling response of tubular chiral thermodynamic metamaterials, combined with thermoplastic polymers and extremely thin piezoelectric layers, the accuracy and sensitivity of high-temperature monitoring of power equipment are solved, and real-time high-temperature early warning in any part of the power equipment and within a large temperature range is achieved.

CN115824440BActive Publication Date: 2025-08-22ZHEJIANG UNIV
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Patent Information

Application Number
CN202211550792.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-12-05
Publication Date
2025-08-22
Estimated Expiration
2042-12-05

AI Technical Summary

Technical Problem

Existing wireless temperature sensors such as resistive sensors, thermocouples and IC sensors have problems with nonlinear resistance-temperature response, low sensitivity and narrow operating temperature range, resulting in inaccurate and insensitive high temperature monitoring of power equipment.

Method used

The tubular chiral thermodynamic metamaterial design is adopted to control the buckling response of the thin-walled cylindrical shell, combined with the thermoplastic polymer and an extremely thin piezoelectric layer, and achieve high temperature warnings at any part of the power equipment and within a large temperature range.

Benefits of technology

It realizes real-time, accurate and effective high-temperature warnings at any part of the power equipment and within a large temperature range, breaks through the technical limitations of wireless temperature sensors, and has high accuracy and high sensitivity.

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Abstract

The present invention discloses a real-time high-temperature early warning system for power equipment based on tubular chiral thermodynamic metamaterials, comprising a tubular chiral thermodynamic metamaterial, a loading device, and a deformation monitoring system. The tubular chiral thermodynamic metamaterial is a chiral tube made of a thermoplastic polymer. The loading device is provided with two lightweight rigid clamps and four prestressed springs. The deformation monitoring system is provided with an extremely thin piezoelectric layer. The critical buckling force of the tubular chiral thermodynamic metamaterial with specific material and structural parameters decreases with increasing temperature, and at a certain specific temperature, it is equal to the axial pressure provided to the tubular chiral thermodynamic metamaterial by the four prestressed springs. At this time, the tubular chiral thermodynamic metamaterial buckles. The buckling deformation information is obtained in real time by the deformation monitoring system, thereby realizing early warning of the specific temperature. The system of the present invention can realize real-time, accurate and effective early warning of any high temperature in any part (surface and interior) of the power equipment and within a large temperature range.
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