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涡街流量计的稳压补偿
信息来源: 华恒 | [ 2019-04-30] 点击量: 230

   涡街流量计的稳压补偿规则,西安华恒仪表介绍:涡街流量计测量高温气体是为什么需要稳压补偿,因为气体的体积温度和压力影响比较大,所以在测量高温气体是管道内部会有压力,这样气体的体积因为温度膨胀,但是由于压力不断增大,会导致气体的体积又会压缩,所以在没有补偿的情况,我们用涡街流量计所测得流量和实际是有很大误差的

 
  The regulation of voltage stabilization compensation for vortex flowmeter is introduced by Xi'an Huaheng Instrument:Why need voltage stabilization compensation for measuring high temperature gas by vortex flowmeter?Because the influence of volume temperature and pressure of gas is relatively large,there will be pressure inside the pipeline when measuring high temperature gas.The volume of gas will expand because of temperature,but the volume of gas will be increased because of pressure.Compression,therefore,in the absence of compensation,the flow rate measured by the vortex flowmeter is quite different from the actual flow rate.
 
  按照测量原理来说,我们的流量计实际上只能测量当前工况下流体流过的体积,所以这个情况对我们不实用。
 
  According to the principle of measurement,our flowmeter can only measure the volume of fluid flowing through the current working condition,so this situation is not practical for us.
 
  我们实际上使用的时候,是想测量流过多少质量的流体。而蒸汽在不同的压力和温度下,密度变化很大,所以就要在测量蒸汽流过多少体积的同时要测量压力和温度。只有时刻了解蒸汽的密度才可以,准确测量出蒸汽的质量。
 
  When we actually use it,we want to measure how much mass of fluid is flowing.The density of steam varies greatly under different pressures and temperatures,so it is necessary to measure both pressure and temperature while measuring the volume of steam flow.Only when the density of steam is known at all times can the quality of steam be measured accurately.
 
  所谓补偿,就是根据流体的温度和压力数据来计算出流体的密度,从而根据测量出来的流体体积,计算出流体质量。
 
  The so-called compensation is to calculate the density of the fluid according to the temperature and pressure data of the fluid,so as to calculate the mass of the fluid according to the measured volume of the fluid.
 
  至于水蒸汽的补偿,如果水蒸汽是饱和蒸汽就要进行压力或者温度补偿(温度补偿和压力补偿各选其一)。如果是过热蒸汽则要进行温压补偿(温度补偿和压力补偿同时进行)。
 
  As for the compensation of water vapor,if the water vapor is saturated vapor,pressure or temperature compensation(temperature compensation and pressure compensation each choose one).If it is superheated steam,temperature and pressure compensation(temperature compensation and pressure compensation at the same time).
 
  注意一点,在水蒸汽的分类中,饱和蒸汽和过热蒸汽,千万不能弄错,因为饱和蒸汽的密度是高于过热蒸汽的,在仪表的选择和设置时一定要注意。一旦在这个地方搞错,会造成严重的经济损失。
 
  Note that in the classification of water vapor,saturated vapor and superheated vapor must not be mistaken,because the density of saturated vapor is higher than that of superheated vapor,and attention must be paid to the selection and installation of instruments.Once you make a mistake in this place,it will cause serious economic losses.
 
  当然也有一些仪表,不必区分水蒸汽是饱和蒸汽还是过热蒸汽,因为它们除了接测量流量的装置外,同时也接有测量温度和压力的装置。
 
  Of course,there are also some instruments,which do not need to distinguish between saturated steam and superheated steam,because they are connected not only with flow measurement devices,but also with temperature and pressure measurement devices.