Seeking advice on steam flow measurement
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The process uses water supplied through a hydroseparator, and weighing is employed to compare the flow rate with that measured by an orifice flow meter – is this method feasible and correct? It is not possible to determine saturated steam from steam at the moment; is temperature and pressure compensation necessary for measurements? Or is there any way to remove the liquid part? Or would it be better to use a vortex flow meter?
It depends on the specific diameter; if the diameter is large, vortex flow meters are not suitable
Should a steam flow meter use vortex flow meters or something more accurate? Use weighing to compare orifice plates? The weighing is accurate, while the orifice plate has a larger error. The key question is: I don’t know what you plan to do; what’s the traffic volume?
Regarding borrowing a building: I would like to ask if using vortex flow meters for DN80 steam pipes will affect the accuracy?
Actually, you don’t need to understand instruments to figure this out; you can rely on basic scientific principles: 1. The process uses water supplied through a hydrostatic separator, and weight measurement is used to compare it with the flow rate indicated by the orifice flow meter – is this method valid and correct? ——The premise is that all the incoming vapor turns into water, and you collect it all. Law of conservation of mass. 2. It is not possible to determine whether the steam is saturated at the moment; is temperature and pressure compensation necessary for measurements? ——If overheated, temperature and pressure compensation is required. Compensation with the saturated water pressure is sufficient, but the accuracy of measurement is uncertain. Or is there any way to remove the liquid part? ——A gas-liquid separator should be installed in the specified straight pipe section ahead of the flow meter, with proper insulation; it is advisable to operate the steam at superheated conditions. 3. Or would it be better to use a vortex flow meter? ——Imported high-brand vortex flowmeters are the best flowmeters for measuring steam. Even the best ones hardly have flowmeters capable of measuring gas-liquid mixtures properly. Flowmeters aren’t miracles either. There is no god in the world, only the Great God! :P
Agree with what was said above! To have all the steam condense into water is something that almost no one can do; it requires a great deal of money to achieve. All the water that comes out of the steam trap will flash vaporize; it’s really unfair to use this setup. How about trying a different approach: first measure the water flow into the boiler, and then measure the steam flow? That would be a bit easier to handle
Bar-type flowmeters can provide good detection performance for steam and gases
When fetching water, the conversion efficiency needs to be taken into account, as some of it will evaporate. It is best for steam measurement to include temperature and pressure compensation; you cannot ensure that the steam exiting the boiler is always saturated. The steam coming out of the boiler is usually slightly superheated, and even after it reaches you, it may still be superheated. . It is best to add hydrophobic drainage at the front end to remove liquids, but it is not possible to remove them all. . Vortex flow meters are indeed more accurate than orifice plates. Orifice plate flow meters are recommended only for pipes with a diameter of 600 mm or more; for diameters below 350 mm, vortex flow meters can be used, while for diameters below 600 mm, long-nose nozzles are a better choice – all of these options are superior to standard orifice plates
Integrated orifice plate, with temperature and pressure compensation is sufficient.