烟煤制粉喷吹系统设计优化及安全运行参数控制

文章从设计优化和安全运行参数控制两个方面,对烟煤制备及喷吹系统进行了详细分析,提出了优先选用烟气直排式制粉系统、消除制粉系统管道及设备积粉、完善安全保障的监测系统与消防系统、合理设计喷吹罐等设计优化内容,以及氧含量、温度、一氧化碳、煤粉粒度等重要参数范围。

一种非接触式自动扶梯运行安全参数检测系统的研发

对现有自动扶梯运行安全参数检测存在的问题进行分析,提出了一种非接触式自动扶梯运行安全参数检测系统。该系统采用机器视觉技术,利用多传感器协同工作,通过单次试验即可同步测量自动扶梯运行速度、加速度、制停距离等参数,解决了现有测量仪器安装复杂、测量数据漂移、测量人为因素影响大等问题,提高了检测精度与数据可靠度,节省了检测时间。

DF-VI快中子临界装置2号堆芯临界实验

DF-VI快中子临界装置在改造完成、堆芯发生了变化以后,进行了重新启动和一系列的实验测量。测量内容有:根据29次临界实验的数据对2号堆芯平均临界元件数和临界质量进行了计算;应用周期法和棒补偿法对控制棒价值进行了刻度;用逆动态反应性计对安全棒和安全块的价值进行了测量;对单根边缘元件价值和径向元件价值分布进行了测量。通过以上实验测量,确定了DF-VI快中子临界装置2号堆芯的主要安全运行参数。

Orthogonal experiment design of EMI of security monitoring system in coal mines

Security monitoring system of coal mines is indispensable to ensure the safe and efficient production of colliery. Due to the special and narrow underground field of the coal mine, the electromagnetic interference can cause a series of misstatements and false positives on the monitoring system, which will severely hamper the safe production of coal industry. In this paper, first, the frequency characteristics of the interference source on the power line are extracted when equipment runs normally. Then the finite difference time domain method is introduced to analyze the effects of the electromagnetic interference parameters on the security monitoring signal line. And the interference voltage of the two terminal sides on the single line is taken as evaluating indexes. Finally, the electromagnetic interference parameters are optimized by orthogonal experimental design based on the MATLAB simulation on the normal operation of equipment.