ABSTRACT

Measurement of hot metal temperatures during tapping is a critical operation and is useful in understanding blast furnace thermal conditions. The hot metal temperature is currently determined by dipping a lance into the stream coming out of the taphole. The lance contains a thermocouple. This lance is connected through a very long trailing cable into the local display for the operators. The measuring technique is manual, the operating temperature in the casthouse is very high, and every time the cable has to be moved, this activity becomes unsafe. Therefore, a system is developed to transfer these data wirelessly to the control room. It consists of a low-cost small, battery-powered wireless transmitter, which transmits its readings up to 500 m away to a host receiver. It will fit in with limited changes to the entire current temperature lance. When triggered, it will relay readings at a pre-set time interval continuously to the host receiver. The device monitors and transmits to the host: Thermocouple Input Reading, Connector Ambient Temperature, RF Signal Power, and Battery Condition and will be displayed in real-time on the PC screen. These data are also stored on the cloud platform for various kinds of analytics for optimizing the process.

摘要

在出钢期间测量铁水温度是一项关键操作，有助于了解高炉热工况。目前，铁水温度是通过将喷枪浸入出铁口流出的流中来确定的。喷枪包含一个热电偶。该喷枪通过很长的拖曳电缆连接到操作员的本地显示器。测量技术是手动的，铸造车间的工作温度非常高，每次必须移动电缆，这种活动就变得不安全。因此，开发了一种系统来将这些数据无线传输到控制室。它由一个低成本的小型电池供电无线发射器组成，可将其读数传输到最远 500 m 的主机接收器。它将适应整个当前温度喷枪的有限变化。触发后，它将以预设的时间间隔连续将读数中继到主机接收器。设备监控并传输到主机：热电偶输入读数、连接器环境温度、射频信号功率和电池状况，并将实时显示在 PC 屏幕上。这些数据也存储在云平台上，用于优化流程的各种分析。