About the performance analysis of non-metallic expansion joints

About the performance analysis of non-metallic expansion joints
1 . Thermal insulation and energy-saving performance: the structure of the non-metallic expansion joint itself has thermal insulation performance. While the metal non-metallic expansion joint does not have this condition, in order to heat preservation, the outer layer of the metal non-metallic expansion joint, but also covered with a layer of insulation.
2 . Compensation function: Under the same size conditions, the compensation function of non-metallic non-metallic expansion joints is much greater than that of metal non-metallic expansion joints. Especially for the compensation function of lateral displacement, the compensation function of non-metallic non-metallic expansion joint is almost an order of magnitude larger than that of metallic non-metallic expansion joint.
3 . High temperature, not easy to corrode: non-metallic non-metallic expansion joint material not only has a good ability to withstand high temperature performance, but also, it has performance. Ordinary carbon structural steel in the environment of 600 ℃ its yield limit is equal to zero, the temperature is higher will be oxidation and skin. Carbon steel non-metallic expansion joints are prone to cracking in the course of work, stainless steel non-metallic expansion joints in low temperature environment, low leakage point corrosion will occur, and its cost is also quite substantial.
4 . Service life: the service life of non-metallic expansion joints and environmental conditions are closely related. Non-metallic non-metallic expansion joints corrosion performance than good, relatively speaking, the same conditions non-metallic non-metallic expansion joints life will be longer than the life of metal non-metallic expansion joints.
5 . Use of media: metal non-metallic expansion joints are suitable for liquids, gases, powders. Non-metallic non-metallic expansion joints can be both gases and liquids.
6 . Compensation resistance: non-metallic expansion joints are like an elastomer, which will generate resistance after being shrunk or stretched, and the resistance of metal non-metallic expansion joints is much larger than that of non-metallic ones. This resistance is too large for the system is not good, will be the surrounding equipment top bad.
7 . Pressure: Thanks to the flexible design and the special materials used, non-metallic expansion joints can withstand higher working pressure.
8 . Maintenance and replacement performance: non-metallic non-metallic expansion joints do not require maintenance during their normal service life cycle; non-metallic non-metallic expansion joints are much easier to replace than metallic non-metallic expansion joints. The non-metallic expansion joint includes a flexible expansion tube and a metal frame at both ends; the outer layer of the expansion tube is silicone rubber glass fiber cloth with the rubber side facing outward, and the inner layer is fluorine rubber glass fiber cloth with the rubber side facing inward; there is a stainless steel wire mesh on one side of the fluorine rubber glass fiber cloth. The non-metallic expansion joint is used in the desulfurization device of sulfide-bed emission system of coal-fired boiler in thermal power plant, which plays the role of compensation displacement, vibration absorption and noise reduction. Since the fluorine rubber glass fiber cloth can resist the corrosion of sulfide and the stainless steel wire mesh enhances the pressure resistance, the non-metallic expansion joint has a good service life, which can determine the normal operation of the system and prolong the service life of the pipeline.