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How to maintain the rubber joint after installation

Time: 03-28 󰃯 Reading times: 169 󰃳 Editor in charge: The sea 󰃗 Column: product focus

Introduction: The main performance of rubber joint is high pressure resistance, good elasticity (axial, horizontal and angular displacement), noise reduction, light weight, vibration reduction, convenient installation, flexible use, easy disassembly and maintenance, and acid, alkali and oil resistance. Shanghai rubber joint has

Rubber joint Its main performance is high pressure resistance, good elasticity (axial, horizontal and angular displacement), noise reduction, light weight, vibration reduction, convenient installation, flexible use, easy disassembly and maintenance, and acid, alkali and oil resistance. Shanghai rubber joint It has good toughness and strength, and meets various pipeline compensation requirements. The inner rubber layer of rubber joint is made of natural rubber, with good surface finish and low resistance to medium. Therefore, liquid, slurry, powder and gas pipelines can be applied. The outer rubber layer is made of weather resistant rubber, which can resist a variety of environmental erosion, especially aging resistance, and ensure the service life of Shanghai rubber joint. The product is widely used in water, electricity, chemical industry and shipping system.
As the amount of rubber joint is increasing, the installation of the product is particularly important. If the rubber joint is not installed and used correctly, the service life of the rubber joint will be reduced, and the stability of the pipeline operation will also bring potential risks. Shanghai Luoying pipeline summed up some rubber joint damage causes and solutions.
1. Rubber joint leakage; first check whether the bolts of rubber joint flange are tightened, if not, rubber joint leakage and ball wear will be intensified.
2. Cracking problem; many rubber joints exposed to outdoor pipelines in the long-term sun exposure will cause rubber joints rubber aging, sunlight can cause great damage to rubber joints, especially in summer. Under the direct exposure of the sun, the temperature of the rubber joint installed in the open air will not only increase rapidly, but also cause the thermal cracking or thermal crosslinking of the rubber. And it's activation. It is a common aging phenomenon hot oxygen aging to increase the oxygen diffusion rate and activation oxidation reaction, so as to accelerate the oxidation reaction rate of rubber. The thermal expansion of the rubber will change with the temperature of the building Compensator Stretch. Our company's research shows that the temperature difference between building walls during the day and at night can reach 80 ℃, resulting in rubber Expansion joint The movement can reach 25% and even 50% under certain conditions. At this time, the deformation is also relatively large, the rubber joint bears the double pressure, it is easy to tear or other deformation, the shorter the light wave, the greater the energy. What is damaging to rubber is the high-energy ultraviolet rays. In addition to the breaking and crosslinking of rubber molecular chain caused by ultraviolet radiation, free radicals are produced in rubber due to absorption of light energy, which initiate and accelerate the oxidation chain reaction process. The external light acts as heating. Another characteristic of light action (different from heat action) is that it grows mainly on the surface of oak. For the rubber joint with high rubber content, network cracks will appear on both sides of the joint, which is called "light outer crack". The ball of rubber joint will crack in different degrees, and the rubber joint in this situation will be worse. Appropriate protective measures should be taken to avoid the rubber joint from being exposed to the sun, such as covering the rubber joint with plastic bag or plastic film, so as to delay the aging time of rubber joint and prolong the working life of rubber joint.
3. Blister deformation; some rubber joints are used in the environment of long-term immersion in water quality medium, which may cause some parts of the ball to be blistered and deformed. Although it will not affect the performance and continuous use of the rubber joint, regular inspection is still required. If it is found that the rubber joint ball should be soaked and deformed or the rubber layer is separated, the ball needs to be replaced as soon as possible.
4. The results show that the method of rubber joint installation is not correct, resulting in excessive displacement. As a result of dimensional deformation, the rubber joint should be re installed after adjusting the pipe.