The cause of the water meter's rotation
Due to the current meter households are a unit of the family table are concentrated in a box installed on the first floor. Considering the freezing cold in winter and the meter, with 6 or 12 meter with a diameter of 40mm- 50mm diameter pipe, tables and small spacing and straight pipe for water meter also, this will also affect the normal water metering, causing water rotation.
This causes the rotation of the airbag, large amount of water. Tap water production process enterprise is open construction, in the production process of water dissolved gas, at the same time in the construction process, the pipeline will be brought into the gas pipeline, if the exhaust valve is unreasonable, gas cannot be ruled out such well. If the family for a long time without water or pipeline design is not reasonable, the highest point in the home or pipeline will be produced. The airbag sudden starting point as everyone knows, the compressibility of the gas is very high, if the pipe network pressure fluctuations, after duct space expansion will be a great amount of water rotation resulting according to statistics, resulting in less water is 2-3 more than m3 months, there will be dozens of monthly cubic meters of water. According to statistics, the existing water meter rotation to reflect the users call 26, after the scene investigation found, Because there is an air bag in the pipe behind the table, there are 21 households that make the rotation, accounting for 80.8%. After the meter, the pipe leaks 5. Therefore, at present, most of the water meters produce the rotation phenomenon, all because the memory behind the tube is caused by the air bag
The pressure fluctuations, because the water is a liquid, the physical characteristics shown in general is incompressible, but in the tap water pipe, pipe pressure is high, then the water will exhibit compressibility. In some tap water in the pipeline, the pressure fluctuation is inevitable, and we the water meter is a mechanical watch, in which water flow generated by the kinetic energy to drive gear, so as to achieve the purpose of measuring water. When no water, the water pipe ends are connected in a certain amount of high pressure water are fixed; therefore, when the municipal pipe network pressure rises, after the table in tap water pipe the volume shrinks because of increasing pressure, this will have a trace of the water through the water meter, is generated; when the pressure is decreased, the table after the tube is compressed by water pressure decrease and the expansion, will also have a trace of the water through the water table, the difference is This is the reverse. As we all know, the general mechanical table in the water is in the drive gear, is turned upside down when the water is in progress under the drive gear reversal, the drag force of water phase is different, although the two head of the same amount of water, but reflects the reading on the meter is in great. According to statistics, in the case of no air pipeline, resulting in less water, about 0.5-1m3 months. Usually, this water users do not pay attention to; at the same time it is also the current measurement level under normal results.
