During the installation of ultrafiltration pure water equipment, pipe connection is the key link to ensure the normal operation of the equipment and the safety of water quality. The handling of every detail may affect the performance and service life of the equipment. From the selection of pipe materials to the specification of connection methods, from the guarantee of interface sealing to the control of water flow direction, the installers are required to have professional operating skills and rigorous work attitude to avoid leakage, blockage, water pollution and other problems caused by improper connection.
The matching of pipe materials is a priority issue before installation. The inlet and outlet pipes of ultrafiltration pure water equipment usually need to have corrosion resistance and high pressure resistance to adapt to the long-term flushing of water flow and pressure changes during equipment operation. Common pipe materials such as stainless steel and PPR have their own advantages in chemical stability and mechanical strength. When installing, the appropriate material should be selected according to the working pressure, water quality characteristics and use environment of the equipment. For example, in areas with acidic water quality, the use of ordinary steel pipes may cause pipe corrosion, affect water quality and even cause leakage, while stainless steel pipes can better resist corrosion and ensure the stability of the pipe system. At the same time, there are differences in the connection methods of pipes of different materials. The corresponding connectors need to be prepared in advance to ensure the compatibility of materials and accessories.
The sealing of pipe connections is the key to preventing water leakage. Whether using threaded connection, hot melt connection or flange connection, it is necessary to ensure that the interface is tightly fitted to prevent air or water from infiltrating or seeping out. When threading, it is necessary to correctly wrap the raw tape or apply sealant. The winding direction of the raw tape should be consistent with the tightening direction of the thread to ensure the sealing effect; hot melt connection requires controlling the heating time and connection strength to ensure that the pipe and the pipe fitting are fully integrated, and to prevent the pipe from being disturbed by external forces during the cooling process, resulting in interface dislocation. For flange connections, the selection of gaskets is crucial. Gaskets of suitable materials must be selected according to the water pressure and temperature in the pipeline, and the bolts must be tightened evenly to prevent deformation of the gaskets and leakage due to uneven force. Any minor sealing defects may gradually expand during long-term use, eventually leading to serious leakage problems, affecting the normal operation of the equipment and even damaging surrounding facilities.
Correct control of the water flow direction is the key to ensuring the filtering effect of the equipment. Ultrafiltration pure water equipment usually has clear markings for water inlet, water outlet and sewage outlet. During installation, the pipes must be connected strictly in accordance with the instructions in the equipment manual to ensure that the water flows along the designed path. If the water inlet and water outlet are connected in reverse, the filter membrane may be subjected to reverse pressure, causing damage to the membrane element, affecting the filtration accuracy and water output, and even shortening the service life of the equipment. The connection of the sewage outlet should not be ignored. It is necessary to ensure that the sewage pipe is unobstructed so that the trapped impurities and wastewater can be discharged in time when the equipment is flushed or maintained. In the scenario where multiple devices are installed in parallel or in series, it is even more necessary to reasonably plan the direction of water flow to avoid water short circuit or uneven pressure, and ensure that each device can function normally.
The fixing and support of the pipe is an easily overlooked but crucial link in the installation process. The pipe will generate a certain amount of vibration when the water flows through. If it is not fixed firmly, long-term vibration may cause the interface to loosen, the pipe to wear or even break. During installation, the bracket or hanger should be reasonably set according to the direction and diameter of the pipe. The spacing between the brackets should not be too large to prevent the pipe from sagging and deforming due to its own weight. For pipes that pass through walls or floors, sleeves need to be installed, and sealing materials should be filled between the sleeves and the pipes, which can not only play a fixing role, but also prevent water from leaking into the wall or floor. During the operation of the equipment, a stable pipe support system can not only reduce vibration and noise, but also extend the service life of pipes and equipment, and improve the safety and reliability of the entire system.
The interface connection with other equipment needs to consider compatibility and systematization. Ultrafiltration pure water equipment may need to be connected to other equipment such as pre-treatment equipment, water storage tanks, and water terminals. At this time, it is necessary to ensure that the interface size, connection method, and water flow parameters match. For example, the outlet flow of the pre-filter should be compatible with the inlet flow of the ultrafiltration equipment. If the pre-flow is too large, the ultrafiltration equipment may be overloaded and affect the filtration effect; the interface size of the water storage tank must be consistent with the outlet diameter of the ultrafiltration equipment to avoid poor water flow or pressure loss due to differences in pipe diameters. During the connection process, it is also necessary to pay attention to the installation sequence and spatial layout between the various equipment, and reserve sufficient operating space for subsequent maintenance and repair.
Cleaning and disinfection of the pipeline is a step that cannot be ignored after installation. Newly installed pipes may have impurities, oil or microorganisms left in the manufacturing, transportation and installation process. If they are put into use directly, these pollutants may enter the ultrafiltration equipment, contaminate the filter membrane and affect the water quality of the outlet water. Therefore, after the pipe connection is completed, the entire pipe system needs to be thoroughly cleaned. It can be rinsed with clean water or circulated by adding special detergents until the discharged water is clear and free of impurities. For ultrafiltration equipment used for drinking water treatment, disinfection is also required. Usually, ultraviolet irradiation or the addition of food-grade disinfectants are used to kill bacteria and microorganisms in the pipes to ensure the safety of water quality during initial operation. The cleaning and disinfection process is not only a protection for the equipment, but also an important guarantee for the health of users' water use.
The post-installation pipe system test is the last checkpoint to ensure the quality of the connection. After all pipe connections are completed and cleaned and disinfected, the system needs to be pressure tested to check for leaks. During the test, the water pressure in the pipe can be gradually increased to observe whether there is water seepage or dripping at each interface, and check whether the pipe has abnormal deformation or vibration. If problems are found, the pressure must be released in time and rectification must be carried out until the test is qualified. After the pressure test is qualified, a water test run is required to observe whether the water flow rate and water quality indicators of the equipment meet the design requirements, ensure that the pipeline connection is correct, and the equipment operates normally. Only through comprehensive testing can we confirm that the pipeline connection work is successfully completed, laying a solid foundation for the stable operation of the ultrafiltration pure water equipment.
The pipeline connection during the installation of ultrafiltration pure water equipment is a highly technical work, involving material selection, sealing treatment, water flow planning, pipeline fixing, equipment connection, cleaning and disinfection, and system testing. Every link requires the installer to take it seriously and strictly follow the operating specifications and equipment requirements to ensure that the pipeline system is safe and reliable and runs smoothly, so as to ensure that the ultrafiltration pure water equipment can efficiently and stably provide high-quality water sources to meet the water needs of users in different scenarios.
