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利用双波纹管差压计或电子电位差计来计量管道中的乙炔流量。往往因断续生产所带来的某些问题,而给流量计量工作造成困难。我们采用成套气动仪表,较好地解决了这一问题。乙炔气在管道中流动时,一般允许压力在0.5～0.8kgf/cm~2之间波动,压力低于0.5kgf/cm~2时,要求启泵加压,到达0.8kgf/cm~2后停泵。此时,如果用户不用气,压力将保持不变,流量消失,直到再有用量时为止。因此,乙炔气的生产是随着用户的耗量断续进行的。这给计量工作带来麻烦。因为每逢启泵时,流量孔板前后的瞬时压差往往远远超出设计值
The use of dual bellows differential pressure gauge or electronic potentiometer to measure the flow of acetylene in the pipeline. Often due to intermittent production of some of the problems caused to the flow measurement work difficult. We use a complete set of pneumatic instruments, a better solution to this problem. Acetylene gas flow in the pipe, the general allowable pressure fluctuations in the 0.5 ~ 0.8kgf / cm ~ 2, the pressure is lower than 0.5kgf / cm ~ 2, require pump pressure, to 0.8kgf / cm ~ 2 after the stop Pump. At this point, if the user does not use gas, the pressure will remain unchanged, the flow disappears, until the amount of time up. Therefore, acetylene gas production is intermittent with the user’s consumption. This gives metrology problems. Because every time you turn on the pump, the flow orifice before and after the instantaneous pressure drop often far beyond the design value