Abnormalities in the measurement of steam by vortex flowmeters and their analysis
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Our company’s 10-ton/hour gas boiler is equipped with a vortex flowmeter for measuring steam. During winter, when the steam consumption ranges from 8.5 to 10 tons per hour, the flowmeter fails to provide accurate readings. The possible reasons for this are: first, the large amount of steam required for production exceeds what the boiler can produce, resulting in steam containing water; the boiler pressure is around 4 kilograms, and the steam temperature is over 130 degrees； Secondly, fluctuations in flow rate occur as soon as the condensed water collected during production is used; the quality of the recycled water is generally acceptable, but flow rate fluctuations appear once this recycled water is utilized. Please analyze the reasons.
This situation is not due to any other factor; it’s likely that there’s an issue with the quality of your steam. At the time of design, it should be saturated steam. If it becomes super-saturated, water vapor will precipitate, and the mixture will contain water – which is certainly not acceptable, as it is no longer just steam. Improve the quality of the boiler.