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Application of Gas (Natural Gas, Steam) Flowmeter in Water Supply Enterprise

The gas (natural gas, steam) flowmeter is a meter that measures volume flow based on Faraday's law of electromagnetic induction. It is only applicable to the measurement of conductive liquid flow. The output current is linear to the instantaneous flow rate and is not affected by the physical properties of the fluid (temperature, pressure, density). With the effect of viscosity, the cumulative flow is output from the pulse signal. Gas (natural gas, steam) flowmeter has a wide measuring range. The same electromagnetic flowmeter can reach 1:100, and its caliber can also be from 1cm to 2m.
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In recent years, gas (natural gas, steam) flowmeters have become more and more widely used in water supply companies due to their high measurement accuracy, good stability, and rapid response.
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1, as a clear water meter. The settlement water meter is an important settlement tool for the water company's economic income. Flowmeter management procedures are: purchase of electromagnetic flowmeter (cost is included in the installation cost), calibration of the quality report is consolidated for archiving, installation (2 lock management: 1 user, 1 water division), setting factor reporting to the unified archive , use, regular check. In the aspect of water data monitoring: large-caliber 24-hour GPRS real-time data transmission, and set up abnormal flow alarm; Small-caliber mobile phone GSM timing acquisition, in order to achieve effective monitoring of data.

2. Installed in the urban pipe network for area measurement. The regional loading meter measures the water supply of the surrounding large branch pipe, and considers the water recovery rate of the area. If the difference is too large, it is necessary to measure the leak or check the violation. Through regional measurement, the total “recovery rate” is decomposed, and it is grasped from the local level to the overall level, providing an assessment basis for the target management. At present, the dry pipe of the four towns in the suburbs of Tianjin Water Supply Corporation has a large diameter, some of which are DN600 and DN800. The flow rate is large, the pipe is relatively new, and the leakage is not much. Therefore, we chose the measurement accuracy and sensitivity when selecting the type. Use an electromagnetic flowmeter with good stability and wide measuring range.

3, for water plant water measurement. The gas (natural gas, steam) flow meter used for water metering of water plants mainly provides an effective basis for production and management. The most direct role of the smart meter for inflow gas installed in the water plant is to provide real-time water production, facilitate the automatic control of water purification and chlorine injection, calculate drug consumption, chlorine consumption, and electricity consumption, and effectively treat and control the purified water. The cost provides real-time basis; on the other hand, when the water pumping house is normally started, abnormal flow can be displayed through the inflow flow meter, and the failure of the upper water pipeline explosion or unit abnormality can be timely reflected. The factory water flow meter can participate in the dispatch of the city pipe network together with the factory water pressure to ensure the proper water supply pressure; it can also provide reference for the operation of the pump room unit.

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