基于国产PLC的偏二甲肼废气处理控制系统设计与实现

Design and Implementation of a Control System for UDMH Exhaust Gas Treatment Based on Domestic PLC

摘要:

针对偏二甲肼废气处理控制系统依靠国外PLC设备导致自主性差、运维成本高等问题，对基于国产PLC的偏二甲肼废气处理控制系统进行了研究；构建了涵盖国产传感装置、执行组件及基于麒麟操作系统自主研发软件的完整控制架构，并在航天发射场进行应用验证；采用模块化和分层设计，开发了具备数据采集、工序控制、故障联锁等功能的PLC控制程序和集监测、控制、管理于一体的上位机监控软件；经实验验证，系统通过全部功能测试，可实时精准处理流量、压力、温度等多类信号，可靠执行各类控制指令与故障联锁；经航天发射场实际应用验证，系统运行稳定、可靠且高效，满足工艺要求，成功实现了偏二甲肼废气处理系统软硬件的全国产化替代，为有毒及有害气体的安全处置提供了一种可供参考的解决办法。

Abstract:

To address the issues of low autonomy and high operational costs caused by reliance on foreign PLC equipment in the traditional unsymmetrical dimethylhydrazine(UDMH) exhaust gas treatment control systems, research was conducted on a domestically developed PLC-based dimethylhydrazine exhaust gas treatment control system. A comprehensive control architecture was established, incorporating domestic sensing devices, execution components, and self-developed software based on the Kylin operating system, and was validated through application in aerospace launch facilities. A PLC control program was developed through modular and layered design. The program supports data acquisition, process control, and fault interlocking. An upper computer monitoring software which integrates monitoring, control, and management functions was also created. This achieves full-process autonomous control. Experimental verification confirms that the system passed all functional tests. It can accurately process signals such as flow and pressure in real time. The system reliably executes control commands and fault interlocking. The application verification at space launch sites shows that the system operates stably and efficiently. It meets process requirements. The system successfully realizes localization of software and hardware of the UDMH exhaust gas treatment system. It provides a reference solution for the safe treatment of toxic and hazardous gases.