Pipe leakage is an inevitable problem, because every pipe is subjected to mechanical fatigue and erosion during continuous use, resulting in corresponding voids in the pipe connection ports
Such leaks may cause considerable damage to pipeline transportation, especially in the construction of large pipelines, if a leak occurs, it may stop the delivery of important resources.
Carbon steel flange gasket assembly knowledge
In order to be able to deal with the leakage problem, most of the pipeline projects at this stage use better carbon steel flanges and gaskets, so the assembly of carbon steel flanges and gaskets is crucial, but many people have little grasp of flanges and flange gaskets, and do not know how to install flange gaskets
Waveform degree refers to the error with the entire flatness, usually do not need to consider the wave front problem, too large waveform is also a problem that can not be solved, so sometimes need to pay special attention to the glass lining equipment, which will lead to the natural flow of molten glass relatively large ripples
Under high bolt torque, glass lined carbon steel flange is also easy to deform, if the flange warping, it is likely to be caused by thermal deformation or thermal stress
Flanges can be re-processed, when the bolt load is too large or the flange thickness is insufficient, usually called bow deformation, the solution is to use higher carbon steel flanges reinforced to strengthen the structure.
Identification of gasket
The flat gasket used in industry is generally composed of a sealing element and an inner and outer strengthening ring, and the sealing element or gasket body is a key part to prevent leakage.
Its commonly used materials are non-metallic materials, such as flexible graphite, polytetrafluoroethylene, fiber reinforced rubber composite board and so on. In addition, the sealing element material can also be rigid or flexible metal, usually used for high pressure and temperature occasions.
For non-metallic material sealing components, metal materials are usually inserted to enhance, but also facilitate the manufacturing of fragile materials such as graphite sealing components.
The reinforcement material can be a sheet metal or a wire mesh, and the sheet metal is often sprinted with holes to improve the reinforcement effect and increase the elasticity, and they are bonded together by binder and roller press.
The sealing element can also be provided with a surface layer or an anti-bonding treatment layer to increase the sealing effect and prevent the flange sealing surface from sticking
We must pay attention to the process of using flange gaskets. Naturally, it is not that after the flange gasket is used, the flange is correspondingly less prone to leakage, but the probability of leakage of the flange is correspondingly reduced.
Therefore, in the process of using carbon steel flanges, we must remember to check and maintain on time, and once the leakage and erosion situation is found, the erosion part is removed in time, so as to make the pipeline project more reliable.
