Precautions for the operation of orifice flowmeter in pipeline water accumulation
Orifice flow meters are widely used in sectors such as petroleum, chemical, metallurgical, power, and light industry. In the system of orifice flowmeter measurement, due to the flow of fluid through the orifice plate of the throttling device on the pipeline, a differential pressure will be generated in front and behind it, and the magnitude of this differential pressure is related to the flow rate of the fluid. In practical operation, such as the measurement of air, gas, and steam, because the measuring medium contains water vapor, when the temperature drops or the pressure rises to a certain degree, the water vapor in it is converted into water, and it often accumulates in front of the measuring orifice plate, causing significant errors in the orifice flow meter. Therefore, in the operation process, attention should be paid to the degree to which the accumulated water in front of the orifice plate affects the measurement results, and it should be dealt with in a timely manner.
*Timely discharge the condensed water in the pipeline. When installing drainage devices, the main measures to avoid water accumulation blocking pipelines are to have a reasonable design of pipeline slope and distribution of drainage devices, as well as regular maintenance and inspection to avoid large amounts of water accumulation blocking pipelines. When the timely discharge of condensed water also reduces the humidity of the pipeline, it slows down the corrosion of condensed water and other impurities on the pipeline, thereby improving the accuracy of measurement data.
The simplest way to solve the problem of water accumulation in front of the throttle component is to open an infusion hole at the lower part of the throttle component. Install the throttling device on the vertical process pipe, or use a circular or eccentric orifice plate instead. Among them, the uncertainty of eccentric orifice plate is smaller and better than that of circular orifice plate. Perhaps I am also interested in metal rotor flow meters.
