High temperature non-metallic expansion joint is specially designed for pipeline system in high temperature environment to compensate for thermal expansion and contraction effect caused by temperature change, reduce stress in pipeline system, and avoid pipeline damage caused by thermal stress. This kind of expansion joint is mainly used in high-temperature flue gas and steam conveying systems in chemical industry, electric power, iron and steel, cement, petrochemical and other industries. Its design and material selection need to give special consideration to durability and sealability in high temperature environments.
Features of high temperature non-metallic expansion joints:
High temperature resistant material: Use non-metallic materials that can withstand high temperatures, such as silicone rubber, fluororubber, glass fiber, ceramic fiber, graphite, etc. These materials have good heat resistance and chemical stability.
Multilayer structure: Usually adopt multi-layer composite structure, including thermal insulation layer, high temperature resistance layer, sealing layer, etc., to improve the overall temperature resistance and sealing effect.
Thermal insulation design: Built-in thermal insulation material or structure to reduce the influence of high temperature on the internal and external environment of the expansion joint and protect non-metallic materials from overheating damage.
Strengthen support: Under high temperature conditions, the expansion joint may face greater stress, so it is necessary to have a reinforced metal frame or support structure to ensure the stability and safety of the expansion joint.
Special seal: In high temperature environment, ordinary sealing materials may fail, so it is necessary to use high temperature resistant sealing materials, such as graphite sealing rings, to ensure that good sealing performance can still be maintained in high temperature.
Size and shape customization: According to the actual application requirements, high temperature non-metallic expansion joints can be designed in different sizes and shapes to accommodate various complex piping systems.
Application Scenario:
High temperature flue: It is used to compensate the thermal expansion and contraction of flue in high-temperature flue gas emission systems such as coal-fired power plants, cement plants and waste incineration plants.
High temperature steam pipeline: In steam delivery systems such as nuclear power plants and thermal power plants, it is used to absorb the thermal expansion of steam pipes.
Chemical industry: Used in high temperature material conveying pipeline in chemical production process to reduce pipeline stress and prolong pipeline life.
When selecting and designing the high temperature non-metallic expansion joint, it is necessary to fully consider the specific conditions of the working environment, including the maximum temperature, medium characteristics, displacement amount and other factors, so as to ensure the reliable operation of the expansion joint under high temperature conditions.