新式硅表校验方法

The New Silicon Meter Calibration Method

摘耍:本文涉及电厂1、2、3号机和0号机二氧化硅表的校验新方法,使校验后的硅表能够安全运行,同时也保证机组稳定运行等问题。针对离线校验仍然出现数值不准确的现象,本文提出了模拟运行的构想,首先水源上,本文选择了和平时炉水相近的人造80PPb纯水,这样对正常运行测量时的精度提供了保障。其次在容量上,本文选择5L这个数值,一方面这个数量可以维持十几个小时的模拟运行,能提供多次校验并观察系统稳定值,另一方面运输操作起来也较为方便。再者对于水桶放置位置的考虑,由于要模拟取样水在管道里的压力,所以把水桶放在取样管上方大约1m的高度,利用虹吸原理把取样水压入取样管中。若仪表在模拟运行时指示准确,则证明表计运行状况良好;反之,本文就可以在机组投运之前将表计再次进行校验直到准确,防止因为校验工作不到位而导致机组运行后缺陷频繁的现象。

This paper relates to a new calibration method for power plant 1,2,3,and 0 silica table machine,the silicon surface after the check to the safe operation,but also to ensure the stable operation of the unit and other problems.For the off-line calibration still appear less accurate numerical phenomenon,we put forward the conception of simulation operation,the first water,we choose and the usual water similar artificial 80 PPb pure water,which provides a guarantee for the normal operation of the measuring accuracy.Secondly,in the capacity of 5 liters,we choose this value,hand this number can maintain the simulation run for more than ten hours,can provide multiple check and observe the system stable value,on the other hand,it is also more convenient to transport operations.In addition to the bucket position to consider,due to the simulated sampling water in the pipe pressure,so the bucket in the sampling tube is about 1 meters high,using the siphon the water into the sampling tube sampling.If the instrument is in the simulation run time accurate indication,shows that the meter is running in good condition;on the contrary,we can in the unit is put into operation before the meter again check until accurately,prevent because the calibration work is not in place due to frequent defects after operation.