Causes and solutions of leakage in heating construction

Causes and solutions of leakage in heating construction

In the heating construction process, leakage is a relatively common quality problem. Once leakage occurs, it will have a greater impact on people's normal production and life, and at the same time, buildings will be damaged to varying degrees. In the heating construction process, it is necessary to strictly control the project quality, ensure the quality of the project construction, try to avoid leakage, provide people with a comfortable living environment, and avoid unnecessary property losses.

　　 1. Reasons for leakage during heating construction:

　　 1. There are many types of heating construction pipes:

　　 Heating pipes not only have a wide variety, but also have great differences in quality. Once the quality of the selected pipe is unqualified, it will bury hidden quality hazards for the quality of the project, and leakage accidents are extremely likely to occur.

　　2. The construction personnel lack understanding of the performance of the pipe:

There will be many corners in the heating construction process. When constructing in this place, cold bending construction is required. However, in the actual construction process, many construction personnel do not consider the bending radius for the convenience of construction. The pipe is bent at will, which causes the aluminum-plastic composite pipe to be easily broken, but it cannot be observed on the surface. Once the heating starts, it will burst at the bend, resulting in a water leakage accident.

　　3. There is no matching situation of aluminum-plastic composite pipe:

Due to the diversification of pipes in the current market, this will cause the two interconnected pipes to have different materials during construction, and the thermal expansion systems of pipes of different materials will also have certain differences, which will lead to Due to inconsistent expansion coefficients, leakage occurs.

　　4, PP-R pipes and accessories:

　　 At present, in the heating construction process, PP-R pipes are widely used due to their better corrosion resistance and better performance, which brings greater convenience to the heating construction. However, if this kind of pipe fails to make a good hot melt connection during use, it will cause leakage. When the construction personnel operate unreasonably and cannot effectively control the melting time, it will cause rotation and insertion depth changes during the connection, which will have a certain impact on the connection strength. When the hot melt connection is performed, the plastic pipe is processed twice, so that the high-quality plastic will be changed and become recycled plastic, which affects the reliability of the connection. At the same time, the leakage caused by the hot melt connection is also repaired. With greater difficulty.

　　 2. Leakage prevention during heating construction:

　　 1. Do a good job of dredging the pipeline:

　　 Due to the relatively cold winter in most parts of our country, heating is a key consideration in winter in these areas. In the current heating system in China, boilers and hot water are mostly used for heating. In order to better improve the heating efficiency, it is necessary to ensure the quality of the heating project, especially to do a good job of dredging the pipes so that the pipes are at a temperature The problem of frost damage or blockage will not occur under changing conditions, ensuring the smoothness of the pipeline, and effectively avoiding the occurrence of pipeline leakage.

　　 2. Reasonably design the pipe bends:

　　 There are many bends in heating pipes, so once the local water circulation of the heating pipe system is not good, stagnant water will form, which will affect the quality of heating, and the pipes are also prone to rupture under repeated thermal expansion and contraction. This requires reasonable design of pipe bends in heating construction to ensure the smoothness of the pipe. In addition, in the pipeline installation process, because the stairwell pipeline is prone to corrosion problems, it is necessary to take necessary preventive measures to ensure that the installed pipeline meets the construction requirements, so that the quality of the pipeline can be guaranteed.

　　3. Choose high-quality pipes and radiators:

　　In the procurement of pipes and radiators, some construction units often choose inferior products for installation in order to achieve a larger profit. These inferior pipes and radiators will not only bring greater difficulty to the installation work, but also an important cause of leakage. Even a high water pressure will cause a rupture accident, which will greatly affect the safety of the heating system. influences. At the same time, it also poses a greater threat to personal safety. Therefore, in order to avoid leakage, a high-quality radiator should be selected, and the quality of the materials in the installation should be ensured to meet the relevant standards. After the installation is completed, a water pressure test should be done.

　　4. Use new pipe materials:

　　In the traditional pipe network, most of the metal pipes are mainly used, so when designing long straight pipe sections, it is necessary to fully consider the thermal expansion and expansion of the pipes, and accurately design the expansion joints. In this way, during winter operation, the pipe welds or valves of the thermal external network can withstand greater thermal stress, so as to avoid damage under thermal stress. With the continuous development of science and technology, various new technologies and new products are constantly emerging in the market. Many new materials are continuously applied to heating pipes, and very good results have been achieved, but there are still some penetrations. The occurrence of leakage phenomenon.

　　 5. Strengthen the management of heating construction:

　　 (1) Unqualified pipes and radiators are strictly prohibited from entering the site. At the same time, it is necessary to strengthen the training of construction personnel and quality inspectors. In the installation work, s* should first conduct a drawing review, and then a material review, if it is a qualified product, then install it, and then strengthen the tracking management, and then strictly accept the z*. It is strictly forbidden to open the bolts for heating for unqualified projects.

　　 (2) Strengthen construction management. Strengthen the qualification review of construction units. Strengthen construction management and step-by-step acceptance.

　　 (3) Once water leaks in the radiator pipes are found, quickly repair and replace them; eliminate hydraulic imbalance and shorten the heating interval.