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首页> 外文会议>ASME Pressure Vessels and Piping Conference: Computer Technology >DETERMINE WEIGHT OF HOT METAL CAR USING STRAIN GAGE METHOD
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DETERMINE WEIGHT OF HOT METAL CAR USING STRAIN GAGE METHOD

机译：使用应变计法测定热金属轿厢的重量

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In certain situations, train car containers that carry hot metal have been overfilled, which necessitated the replacement of very costly car parts. Therefore, it is desirable to predict the amount of fluid needed at all times in order to know when to divert the flow of molten steel from the car. This study showed that the level of fluid in a container can be controlled even when the amount of fluid inside the container is not visible. When strain gages are effectively installed they can be used to continuously calculate the weight of a system as the strain increases, although only the final total weight is of concern. Strain gages can be positioned in safe locations on the spanner bolster of a hot metal car. The gages are installed such that the thermal and axial strains cancel out, ultimately leaving only the value for the weight of the loaded car. Once the gages are installed, they are calibrated when the system is full. For all subsequent loading periods, the strain gages report a linear strain increasing until it is equal to the original full calibration value. This then signals the operator to divert the flow of steel. If the inside of the container deteriorates over time, the strain that governs the shutoff remains the same although the fluid level is slightly lower. In the event of skull (leftover steel in the container), the maximum strain remains the same and the final volume is lower than the initial calibration condition. The objective in all cases is to avoid overflow of fluid from the car. This investigation showed that the amount of fluid in a train car that carries molten steel can be known at all times during the filling process. It is supported with manual calculations, finite element analyses, and laboratory experiments.
机译：在某些情况下，携带热金属的火车汽车容器已经过满，这需要更换非常昂贵的汽车部件。因此，希望预测始终需要的流体量以便知道何时从汽车中转移钢水流量。该研究表明，即使当容器内部的流体量不可见时，也可以控制容器中的流体水平。当有效地安装应变测量时，它们可用于连续计算系统的重量，因为应变增加，尽管仅最终总重量是关注的。应变计可以定位在热金属汽车的扳手撑杆上的安全位置。安装了测量，使得热和轴向菌株抵消，最终仅留下装载汽车的重量的值。安装了测量值后，当系统已满时，它们会校准。对于所有后续加载周期，应变计报告线性应变增加，直到它等于原始全校准值。这然后表示操作员转移钢流量。如果容器内部随着时间的推移恶化，但是控制关闭的应变保持相同，尽管流体水平略低。在骷髅（容器中的剩余钢）中，最大应变保持不变，最终体积低于初始校准条件。所有情况下的目的是避免从汽车溢出流体。这项研究表明，在填充过程中，可以在填充过程中始终以携带钢水的火车车中的流体量。它支持手动计算，有限元分析和实验室实验。

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