Comprehensive analysis of water meter principle
There are three commonly used water meters, and understanding the principles of these three water meters can help us understand the use of water meters, and can also enhance our water-saving awareness. Today, Shanghong Water Meter will take you to see a comprehensive analysis of the principles of the three water meters for your reference.
Principle of water meter-rotary wing water meter (mechanical water meter)
The working principle of the rotary-wing single-stream water meter is that the water flows from the water inlet of the watch case tangentially impacting the impeller to make it rotate, and then continuously records the number of revolutions of the impeller through the gear reduction mechanism, thereby recording the cumulative flow through the water meter.
The working principle of the rotary-wing multi-stream water meter is basically the same as that of the single-stream water meter. Through the distribution of the impeller box, multiple streams of water are tangentially impacted on the impeller from the water inlet of the impeller box to make the axial impact force of the water flow on the impeller. It is balanced, reduces the wear of the impeller supporting part, and structurally reduces the influence of water meter installation and scaling on the error of the water meter. The overall performance is significantly higher than that of a single-stream water meter.
Principle of Water Meter-Rotary Piston Water Meter (Volume Water Meter)
The rotary piston water meter uses the pressure difference between the two ends (water inlet and water outlet) of the water meter measurement chamber. The water flow entering the water inlet pushes the piston to rotate, squeezing the water in the metering chamber to the water outlet. With the rotation of the piston, the volume of the low-pressure end (water outlet) gradually decreases, while the volume of the high-pressure end (water inlet) continues to increase. Each time the piston rotates for one revolution, the water in a metering chamber is squeezed out of the water outlet, and at the same time, the shift fork is pushed through the piston shaft to rotate for one revolution to record the water consumption.
The water consumption of a metering chamber volume is recorded every time the piston rotates for one revolution. This can be calculated theoretically, and the friction coefficient of the parts in the metering chamber of the water meter is small, and the geometrical dimension accuracy is high. Therefore, the metering accuracy of the water meter is very high. Reaching the ISO4064 level C and D level is very beneficial to water fee recovery. The disadvantage is that it requires relatively high water quality. The movement of the piston along the wall of the metering chamber is a rolling and sliding process, and the gap between the piston in the metering chamber is only 0.02~0.1mm, so impurities and fine sand will seriously affect the metering performance and service life of the water meter.
Principle of Water Meter-Smart Water Meter
At present, the smart water meters manufactured in China can be divided into two categories: prepaid water meters and remote water meters. The common feature is that the sensors for measuring water flow still use ordinary water meters. The sensing element converts the mechanical reading of the raw water meter into electrical signal data, and then collects, transmits and stores it, and controls it automatically or manually according to the requirements of the settlement transaction method. Because their base meters are all speed-type water meters, they are all classified as speed-type water meters according to the principle of water meters. They are only improved in terms of reading methods, indicating mechanisms, etc., adding prepaid and remote readings. Such as automatic meter reading system functions, but the metering mechanism, transmission mode is still mechanical, and the accuracy (precision) level of the water meter is the same as that of the ordinary mechanical water meter, which is 2.0.
Smart water meters apply high-tech electronics and information transmission technology to water meter manufacturing, which has changed the traditional domestic meter reading and settlement methods to a considerable extent, and has improved the level of water metering and metering in China. It is a technological advancement in water metering and charging; The promotion and application of "Buy water first, use water later" and centralized meter reading management have updated the concept of payment by water users, reduced water arrears, household meter reading, etc., and reduced the manpower and manpower of meter reading in the water supply department. Material resources; the water fee can be recovered in advance, reducing the later operation personnel, improving the management efficiency and the management level of the water department; and the anti-theft performance is better than ordinary water meters, which can fully realize the "prepayment", "step water price" and "hoarding water volume" "Function.
The relevant information about the principle of the water meter is introduced here. I hope this article will be helpful to you. If you don’t understand anything, please feel free to come to us for consultation, and we will answer you as soon as possible.