Analysis of the causes of damage in the use of non-metallic compensator.
Non-metallic compensator, also known as non-metallic expansion joint or non-metallic corrugated compensator, is a compensation device used to absorb the dimensional changes caused by thermal expansion and contraction of pipes, conduits or containers, and belongs to the compensation element. Non-metallic expansion joints are usually made of fiber fabric, so they are also called fabric compensators (expansion joints). There are also rubber materials, which can replace the fiber fabric in various working conditions, except in high temperature conditions where the conditions of use cannot be met. The main characteristics of non-metallic expansion joints are: providing large multi-dimensional compensation in a small size range, non-metallic compensators have good performance. The non-metallic compensator can reduce the noise and vibration of boilers, fans and other systems. In piping systems where there are both thermal stresses caused by temperature changes, local stresses caused by equipment vibrations and fixed supports, and stresses caused by system installation deviations, piping systems can be deformed or damaged at weak points if expansion joints made of metal are used. Such damage can be avoided if flexible non-metallic expansion joints are used.
Non-metallic compensator is widely used in steel plants, smelters, petrochemical plants, thermal power plants, cement plants and atomic power plants, such as smoke desulfurization, dust removal equipment, air heating, flow-assisted blower and other equipment at the entrance and exit, it is better than the metal elastic joint, and therefore deeply the common good criticism of users, and vigorously promote the use. Reasons for damage in the use of non-metallic compensator: compensator products can be classified by shape, such as spherical compensator, but also by raw materials, such as non-metallic compensator. In many characteristics of different compensator use, the network found as non-metallic compensator is more simple damage, this is why? This is mainly a problem of the application environment. Because the application environment is different, also caused by the non-metallic compensator life is different, because the structure of the non-metallic compensator material is classified as soft fabric material, fixed screws is required on the one hand, the skin cloth fixed, on the other hand is the pressure of the skin to play the effect of sealing, so that the pipeline will not produce the appearance of leakage. Installation, because the back of the screw tightened, the front of the screw will be loose, resulting in the accumulation of acid penetration to the screw for corrosion, thereby corroding the screw thread, significantly reducing the life of the non-metallic compensator, so the installation needs to repeat the screw tightening.
