目前应用较广泛的涡街式蒸汽流量计主要存在两个缺点,一是价格昂贵,达数万元一块,小企业难以承受;二是对于存在大量汽液两相流介质且其干度时刻处在变化之中的湿饱和蒸汽,存在不容忽视的计量误差,因此它不适用于二、三级计量。而湿饱和蒸汽计量方式,仅用一块价格在200元以下的普通水表及两根水银直读式温度计,就可基本准确地计量湿饱和蒸汽用量。 At present, there are mainly two disadvantages of the vortex-type steam flowmeter that are widely used. One is that it is expensive and can cost tens of thousands of yuan, which is unbearable for small enterprises. Second, for a large amount of vapor-liquid two-phase flow medium and its dryness moment Wet saturated steam in the change, there is a measurement error can not be ignored, so it does not apply to two or three levels of measurement. The wet-saturated steam measurement, only a price of 200 yuan in the following ordinary water meter and two mercury direct-reading thermometer, you can basically accurate measurement of wet saturated steam consumption.