Energy-saving high-pressure nitrogen supply system for tire vulcanization and control method thereof

By adopting a direct supply mode of liquid pressurization + high-pressure vaporization and feedforward + pressure-flow cascade feedback control, the problems of high energy consumption and unstable pressure in traditional high-pressure nitrogen supply systems for tire vulcanization have been solved, achieving efficient and stable tire vulcanization production, simplifying equipment structure and improving safety.

CN122407984APending Publication Date: 2026-07-17SAILUN GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SAILUN GRP CO LTD
Filing Date
2026-05-27
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional high-pressure nitrogen supply systems for tire vulcanization are energy-intensive, have unstable pressure control, are complex, and occupy a large area, making it difficult to meet the needs of efficient and stable production.

Method used

The system adopts a direct supply mode of liquid nitrogen boosting and high-pressure vaporization, combined with feedforward control and pressure-flow cascade feedback control. By collecting the gas load signal of the vulcanizing machine in real time, calculating the feedforward compensation flow, and adjusting the flow with pressure feedback, the system achieves precise control of the liquid nitrogen pump, eliminating the gas compressor and optimizing the system structure.

Benefits of technology

It significantly reduces system energy consumption, improves pressure control accuracy and stability, ensures uniformity of tire vulcanization quality, simplifies system structure, and enhances equipment safety and reliability.

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Abstract

本发明涉及轮胎制造技术领域,具体涉及一种轮胎硫化用高压氮气节能供给系统及其控制方法。该系统包括顺序连接的液氮储罐、低温液体泵、高压汽化器、高压缓冲储罐和硫化用气管网。控制方法包括:获取硫化机充气信号作为前馈信号并计算前馈补偿流量;获取高压缓冲储罐压力反馈值并通过压力控制器计算反馈调节流量;将两者叠加得到液氮泵目标流量设定值,并通过流量控制器调节泵频。本发明通过结合前馈与串级控制,超前补偿硫化机的脉冲用气负荷,并快速稳定管网压力。本发明还集成了温度安全联锁、前馈失效保护、负荷平滑等机制,确保了系统运行的安全性与鲁棒性,实现了高压氮气的高效、稳定、可靠供给。
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