A method and system for continuous adjustment of a concrete autoclaving process with temperature gradient feedback

CN122275141APending Publication Date: 2026-06-26PIZHOU YUANTONG COMMERCIAL CONCRETE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PIZHOU YUANTONG COMMERCIAL CONCRETE CO LTD
Filing Date
2026-05-21
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing technologies cannot effectively identify and compensate for temperature gradient errors caused by uneven steam injection, airflow disturbance, and local heat dissipation differences during the steam curing process of precast concrete components. This leads to inaccurate control and affects the early strength consistency and energy efficiency of the components.

Method used

The temperature gradient feedback method is adopted. By synchronously collecting component temperature measurement data and environmental reference temperature measurement data, the temperature field is reconstructed using ordinary Kriging interpolation. Combined with environmental temperature compensation and differential gradient stripping, the opening degree of the steam regulating valve is calculated, and PID control with Smith prediction compensation is performed to achieve continuous and stable steam regulation.

Benefits of technology

It improves the accuracy and reliability of temperature gradient feedback, reduces overshoot and hysteresis of steam regulating valves, and enhances the early strength consistency and steam curing energy efficiency of precast concrete components.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to the field of concrete process temperature control technology, and discloses a method and system for continuous regulation of the concrete steam curing process based on temperature gradient feedback. The method includes: constructing a steam curing temperature time-series dataset; reconstructing the temperature field inside the steam curing kiln; compensating for ambient temperature on the original temperature measurement data of the component surface; forming a steam regulating valve opening control sequence; and performing online parameter correction. Compared to existing technologies that directly use the component surface temperature measurement value as the steam valve regulation feedback, this invention addresses the technical problem of failing to obtain an effective surface temperature gradient reflecting the component's hydration heat release state, especially under conditions of uneven steam injection and localized heat dissipation differences within the steam curing kiln. This application improves the accuracy of temperature gradient feedback control during the concrete steam curing process by reconstructing the temperature field inside the steam curing kiln and incorporating the estimated ambient temperature at the component surface measurement points into the surface temperature compensation and differential gradient calculation process.
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