Views: 96 Author: Site Editor Publish Time: 2020-09-24 Origin: Site
As a special measuring instrument, water meter is the legal trade settlement basis between water supply enterprises and users. Its record of water consumption is affected by the quality of the water meter itself and the effect of valves on the opening and closing of water. The quality of water meters is directly related to the economic benefits of water supply companies and the vital interests of customers. However, with the rapid development of the city and the increasing number of new water users, the simple artificial collection of water fees has become increasingly complicated, and it is no longer suitable for the development of modern water supply enterprises.
At present, among various domestic water meters, rotary-wing wet water meters are widely used in China due to their simple structure, stable measurement and low price. The widespread use of liquid-sealed counters has overcome the shortcomings of earlier wet-type water meter products that are easily fouled by pipeline water fouling, solving the problem of clear reading of water meters. The water supply industry generally believes that liquid-sealed water meters are currently more suitable for domestic pipes and water quality.
Although the eight-digit pointer C-type meter is more inconvenient and outdated than other types in the indication method, and even experts have called for the C-type meter to be eliminated, there still seem to be large markets for them.
High-sensitivity small-caliber rotary-wing water meters have been introduced in the talks in recent years, and have occupied the original ordinary meters’ market. This type of water meter is attractive in its commercial name, but it also confuses some concepts.
First, the concept of measurement is a measurement that needs to meet the specified maximum allowable error, not just a response to the measurement. At present, most of these water meters only improve the response of the water meter to the micro-motion flow through structural design changes. In the sense of measurement, the measurement range of the water meter has not really been improved. Objectively, due to the quality of some domestic plumbing appliances, micro-leakage and unethical drip accumulation methods in a small number of households have caused the water supply department to have an interest and show a great need for this type of water meter. However, there is no particularly high requirement on the sensitivity performance of the water meter in the legal measurement management. In actual use, the anti-interference ability of this type of water meter to the pulsation of water pressure, that is, the possibility of not using water to rotate is increased, which will also bring another kind of trouble, the dissatisfaction of water users. In the new international standards and recommendations for water meters, it is clear that water meters should not accumulate at zero flow. Some companies are developing rotor-type water meters with a measurement level of C and high sensitivity. This is the true improvement of the quality of water meters.
Among large-caliber water meters, traditional horizontal screw-wing water meters and detachable horizontal screw-wing water meters still have a large market. Detachable horizontal screw-wing water meters have the advantages of simple structure, good versatility, and non-stop water maintenance. However, its flow range is not wide. Generally, the flow ratio of the B-level meter is only 1:67, which cannot meet the requirements in many occasions. In some areas, large-diameter rotary-wing water meters are also used. Compared with horizontal screw-wing water meters, although this kind of water meter has relatively good interference immunity, its small flow capacity, large pressure loss, and huge weight and volume have become disadvantages. In recent years, vertical screw-type water meters, turbine-type water meters and double-type water meters have gradually risen, providing users with new choices.
From the analysis of the water consumption of each pipe diameter, the leak rate of large-caliber water meters under low flow rate accounts for more. Studying the composition and characteristics of water consumption and choosing the appropriate water meter will bring greater efficiency to water supply enterprises.
In the current situation where the flow measurement range of large-caliber water meters is generally insufficient, WPD turbine water meters and double water meters may be the first choice to solve this problem.
With the global lack of energy and water resources, and with the continuous improvement of legal system measurement, the society's requirements for water measurement are getting higher and higher. Therefore, researching and exploring water meters or flow meters that meet the dual needs of water supply companies and water users under the new situation, and expanding their flow measurement ranges, extending the working life of water meters, and improving the intelligence of meters have become new developments trend in the future of water meters.. The advancement of science and technology and the development of society will definitely promote the development of water meters in the direction of high efficiency, precision, accuracy, easy monitoring and copying, and water supply companies and water users will also achieve mutual benefit and win-win under this general trend.
Certainly, we need to choose high quality water valves to match your water meters.