流动脉动对流量测量仪表影响的几个实例

The Examples as the Effect of Flow Pulsation on Flow Measurement Instrumentation

流量测量中经常遇到脉动流,它对容积式流量计之外的绝大多数种类的流量计产生影响,使之误差增大,将脉动源消除或在流量计与脉动源之间装上阻尼器,能有效克服这种影响。列举了3个实例,流体有液体也有蒸汽;仪表有差压流量计也有旋涡流量计。

During the flow rate measurement,the flow pulsation is often found,which could affect most types of the measurement instruments beside the volumetric meter and cause the error. There are two ways to deal with this problem. The first one is to cut off the resource of the flow pulsation,and the second one is to install a damper between flowmeter and the resource of flow pulsation. Both of ways mentioned above can effectively get over this problem. Three examples are listed. The fluid could be liquid or steam. There are two types of flowmeter,differential pressure type and vortex type.