本文介紹了注汽鍋爐計算機控制系統的控制方案及硬件、軟件的具體設計。實現了對鍋爐供水系統、負壓調節系統以及鍋爐燃燒系統的自動控制任務。并且采用熱效率自尋優的方法自動調節風煤比，達到了經濟燃燒的目的。系統運行表明：本系統大大提高了鍋爐運行的穩定性、經濟性，減輕了操作人員的勞動強度，收到了滿意的控制效果。
關鍵詞：注汽鍋爐；熱效率；燃燒系統
Abstract：This paper describes the control scheme of computer control system for the steam-injected boiler and the detail design for the hardware and the software. It realizes the automatic control tasks of the boiler’s supplying water system,the regulating system for the negative pressure, the combustion system. And the method of automatic searching for the optimal thermal efficiency is used to regulate the ratio of air to coal and it achieves the aim of efficient combustion.The system’s running shows: this automatic control system improves the boiler’s stability, efficiency greatly, reduces the operator’s labour intensity and the satisfied result is obtained.
Key words：steam-injected boiler; thermal efficiency; combustion system