High-temperature resistant composite derivation-rectifying roller expansion joint

Abstract

The present invention discloses a high-temperature resistant composite derivation-rectifying roller expansion joint, comprising a drum-shaped skin, and flanges fixedly connected to two ends of the drum-shaped skin. The drum-shaped skin is of a multi-layer composite structure, and comprises a steel wire mesh I, a high silica ceramic fiber cloth layer and a glass fiber cloth that are pasted to one another in sequence from inside to outside. The high silica ceramic fiber cloth layer is composited of a plurality of layers of high silica ceramic fiber cloth, including a high silica ceramic fiber cloth layer I outside the steel wire mesh I, and a high silica ceramic fiber cloth layer II inside the glass fiber cloth; an aerogel thermal insulating layer is disposed between the high silica ceramic fiber cloth layer I and the high silica ceramic fiber cloth layer II. A further improvement is made on that a steel wire mesh II is disposed inside or outside the aerogel thermal insulating layer. The high-temperature resistant composite derivation-rectifying roller expansion joint is characterized in that organic silicone is integrally vulcanized such that the outer wall of the glass fiber cloth and the inner wall of the steel wire mesh I are covered with vulcanized layers. The high-temperature resistant composite derivation-rectifying roller expansion joint is good in thermal insulation property, resistant to high temperatures, high in structural strength, good in toughness, very long in service life, and low in energy loss.

Description

Technical field [0001] The invention relates to a pipeline compensation device, in particular to a non-metallic expansion joint for annealing furnaces in the iron and steel industry. Background technique [0002] Furnace roll expansion joints are mainly used in annealing furnaces in the iron and steel industry, and are important components to ensure the stability of the roll system in the furnace and the entire unit. The furnace roll expansion joints used by the more advanced furnace rolls use non-metallic correction roll expansion joints. The existing correction roll expansion joints include drum skins and flanges. The drum skins are multi-layer composite structures, including from the inside to the outside. The steel wire mesh, the high silica ceramic fiber cloth layer, and the glass fiber cloth are successively bonded to each other. The expansion joint of the correction roller with this structure can meet the requirements of radial and axial compensation required by the use of...

AI Technical Summary

Problems solved by technology

The furnace roller expansion joints used in the more advanced furnace rolls use non-metallic rectifying roller expansion joints. The existing rectifying roller expansion joints include drum skins and flanges. The drum skins are multi-layer composite structures, including inner to outer The steel wire mesh, high silica ceramic fiber cloth layer, and glass fiber cloth that are glued to each other in sequence, the correction roller expansion joint with this structure can meet the radial and axial compensation requirements required for the use of the correction roller, but the heat insulation performance is not good. Well, the heat-resistant temperature is low, and a lot of heat is emitted from the drum skin. On the one hand, the service life of the guide roller expansion joint is short, and on the other hand, it also causes a lot of energy loss

Images