How long is the service life of rubber expansion joint? This depends on the service life of the rubber expansion joint. There are many factors that affect its service life, but the silicone ring in the seal is often affected by several common situations.
The stress and expansion of the rubber expansion joint can directly or indirectly affect the service life of the rubber expansion joint, and is affected by the shape of the main body itself. Due to the installation method of the convex groove or pipe trench, the installation method of each seal ring is different, which may cause uneven stress and deviation of the force center, resulting in a light emphasis on the side. Under the premise of uneven long-term stress accumulation, it is easy to cause expansion and deformation. When the rubber flexible expansion joint is removed again, it is likely to be deformed. Therefore, during installation, balance and stress uniformity should be controlled.
The specification of the rubber expansion joint has deviation, resulting in deformation of the gap.
The gap problem can be divided into several elements:
1. The glue problem of the material. Due to formula reasons, many silicone materials may have poor resilience and insufficient tensile strength, resulting in low stress and leakage of gaps during use.
2. Problems occurred in the processing of silica gel products by the manufacturer: the product is brittle, which causes the rubber expansion joint to roll up thin and thin, resulting in immature inner drum of commercial rubber and deformation after long-term stretching and compression.
3. Due to the influence of hardness and softness, sometimes the softness of rubber expansion joint can change the function and structure of products. Therefore, when rubber expansion joint are stretched and extruded with different hardness and softness in use, inevitable problems will occur in rubber expansion joint, such as too much stress on the gap, too high hardness, and difficult rebound due to product deformation.
The clamp type rubber expansion joint mainly uses the unique properties of rubber, such as high elasticity, high air tightness, medium resistance and radiation resistance. It is made of polyester cord fabric with high strength and strong thermal stability, which is deflected and compounded, and is molded and cross-linked under high pressure and high temperature.
High internal density, able to withstand high pressure, and has excellent elastic deformation effect. The displacement function is particularly suitable for areas with complex geological conditions, large settlement amplitude, frequent changes in cold and hot temperatures during pipeline operation, and easy damage to the pipeline. Self permutation physical destruction.
The installation of clamp type rubber flexible joint in pipeline construction is very simple. As long as preparations are made, stretch the clamp type rubber expansion joint to the required length, and then limit the position to tighten the bolts and tighten the rear diagonal screws. The limiting device is the core of the clamp type flexible rubber expansion joint, which can effectively solve the problems of pipeline expansion and displacement, and is very practical.
Post time: May-16-2023
