Discussion on the ways and means of controlling th

Preliminary study on the ways and means of controlling pipe leakage in water supply enterprises introduction: water is an indispensable resource for human survival and production. With the continuous development of economy and the improvement of human material and cultural level, human needs for water are increasing. At present, the lack of water in many cities across the country has seriously restricted the development of local economy. Therefore, it is of great significance to do a good job in the open source and throttling of water resources. How to use technology and management means to control pipe leakage, improve water supply efficiency and reduce water supply costs of water supply enterprises is a topic worthy of study. I have been working in water supply enterprises for many years, and I think we can start from the following aspects to try to reduce the leakage of water supply pipes, so as to achieve the purpose of water resources throttling

key words: water supply enterprise pipe leakage

relevant station in station: pipe design, maintenance and optimization

water is an indispensable resource for human survival and production. With the continuous development of economy and the improvement of human material and cultural level, human needs for water are increasing. At present, the water shortage in many cities across the country has seriously restricted the development of processing, assembly and other late cost side economies. Therefore, it is of great significance to do a good job in the open source and throttling of water resources. How to use technology and management means to control pipe leakage, improve water supply efficiency and reduce water supply costs of water supply enterprises is a topic worthy of study. I have been working in water supply enterprises for many years, and I think we can start from the following aspects to try to reduce the leakage of water supply pipes, so as to achieve the purpose of water resources throttling

I. do a good job in the management of technical resources

the management of technical data is the basis for doing a good job in the management of pipe maintenance. Therefore, it is very important that the management of pipe should gradually develop towards computerized dynamic management. The pipeline diagram should indicate the diameter, material, buried depth, location, etc. of the pipeline, as well as the water connection of users along the line. Example drawings of pipelines crossing rivers, highways and railways, and record cards of road pipe valves and fire hydrants. The record cards should indicate the valve model, installation date, repair records, manufacturer, etc

II. Traditional leak detection methods

establishing a capable leak detection team to timely check and repair the hidden leakage of pipelines is the main way to reduce the leakage of pipes. According to the leak detection methods, it can be divided into the following three types: 1. Field observation method and drainage inspection well inspection method: arrange personnel to carry out pipeline patrol work in a planned way, and timely feed back information to the enterprise in case of road leakage. This method is simple and easy, but it can detect the obvious leakage, so the effect is unclear; 2. Leakage listening method: the hidden leakage in the pipe is mainly checked by the leakage listening method, which uses the leakage control instrument and relies on the information provided by the technical data of the pipe to detect the leakage of the pipeline. This method should be tested by professional leak detection personnel. Water supply enterprises should, according to their actual situation, strengthen the training and training of leak detection personnel and constantly improve their quality

III. set up regional flowmeter to find the macro distribution of pipe leakage in time

in order to detect pipe leakage for a long time, it is convenient to find the macro distribution of pipe leakage and balance the service pressure of the pipe, so as to reduce the leakage rate. The specific method is to set a flowmeter on the single water supply pipe in the community or a certain water supply area, close all other valves connecting the area, and record the inflow of the area when the water consumption is the least at night. The minimum flow (deducting the water consumption of users at night, setting a meter for large users, and calculating and measuring residential users according to 2l/household/h) is roughly the leakage of the area. If the leakage does not exceed the allowable leakage value, it means that there is basically no water leakage or little water leakage in the area; If the leakage is large, it indicates that there is water leakage in this area. Water supply enterprises can concentrate on leak detection. Regional leakage monitoring is an important measure and future development direction for water supply enterprises to control leakage. It can reduce human investment and blind leakage detection, facilitate the timely detection of leakage, and achieve a targeted goal

IV. strengthen the cause analysis of water leakage, Planned transformation of aging pipes

Table 1 Statistical table of leakage detection of Jiangbei water supply branch in 2004

proportion of leakage points caused by leakage (number) (m3/h) Proportion

pipeline aging 27 65.85% 623.72 92.83%

construction quality 37.32% 14.41 2.14%

pipeline corrosion 11 26.83% 33.8 5.03%

total 41 100% 671.93 100%

from table 1, it can be concluded that pipe leakage is mainly caused by pipeline aging corrosion. Detailed cause analysis: 1. The material of the original pipe is poor and the service life is too long

2. The reinforced concrete pipe interface is not tight, and the rubber band is aging

3. Improper treatment of pipeline foundation

4. The valve is opened and closed too fast, causing water hammer and damaging the pipeline

5. Serious explosion and leakage in winter due to weather

through the above analysis, it is another effective way to reduce pipe leakage to implement planned transformation of pipelines with long service life and pipelines that often burst. Water supply enterprises should allocate funds according to the actual situation and timely transform aging pipelines

v. set up pressure measuring points to control the water pressure of pipes

set up pressure measuring points of urban pipes according to the pipe layout to dynamically track the pipe water pressure. The measured water pressure data shall be sorted out and analyzed to provide a scientific basis for pipe leak detection and pipeline reconstruction. The water pressure of the pipe is not only related to the leakage of the pipe, but also related to the normal use of water by the majority of users and the production cost of water supply enterprises. Too high water pressure will increase the leakage of the pipe. Therefore, the management and research of pipe water pressure is very important. The specific method is to dispatch the factory water pressure of the water plant according to the water pressure required by the most unfavorable water supply point in the water supply area. So that the pipe water pressure can realize economic operation under the most unfavorable water supply condition

VI. strengthen the dynamic management of operating water meters

water supply enterprises should strengthen internal management, and it is suggested that the dynamic management of operating water meters, especially large-diameter and large-capacity users' water meters. It is also a specific way to reduce the production and marketing gap of water supply enterprises, according to Beijing Baihui research data

VII. Conclusion

to sum up, there is a long way to go to control pipe leakage. The majority of scientific and technological workers should carefully study this topic and use technology and management means